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revision 1.95 by adcroft, Tue Nov 5 19:14:26 2002 UTC revision 1.729 by jmc, Fri Oct 6 19:44:51 2006 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
8    
9    checkpoint58p_post
10    o obcs: stop if obcs is used with useCDscheme = .true.
11    o shelfice:
12     - fix a sign error so that no slip at shelfice interface works
13     - remove stop for combination non-hydrostatic code and shelfice. That does
14       not mean, that the results are correct, but at least they are numerically
15       stable
16    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
17    o added adjoint exch routined for all exch*3d* routines
18      and updated flow directives
19    
20    checkpoint58o_post
21    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
22      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
23    o change controling S/R for writing pickup file (new S/R do_write_pickup)
24      and clean-up reading/writing of pickup files.
25    o fix local version of read/write pickup (NH part) in rotating_tank/code
26    o simplify EXCH interface:
27     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
28     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
29    o added the regrid package
30    o shelfice:
31     - add a simple boundary layer scheme to reduce noise
32     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
33    
34    checkpoint58n_post
35    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
36       local variable (not in common block).
37    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
38      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
39      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
40        to work with SingleCpuIO.
41    o add "_d 0" to real constant of pkg/cfc subroutines ;
42       update exp. cfc_exemple & tutorial_cfc_offline output files.
43    o multi-threading and IO:
44      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
45        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
46      - barrier before and after reading.
47      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
48      - avoid using MDS_WRITELOCAL for LAND pkg output.
49      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
50        common-block variables ; Allows multi-threading with master-thread IO.
51    o change default MAX_NO_THREADS from 32 to 4 ;
52      and stop cleanly when MAX_NO_THREADS is too small.
53    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
54    
55    checkpoint58m_post
56    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
57       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
58    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
59       keep global_ocean.90x40x15 (for AD testing) with former secondary test
60       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
61    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
62        add MITgcm_tutorials (= code + all the tutorials)
63    o ecco, option to compute cost for total ssh (mean+anom)
64    o consistent with addition of ptracer and ssh in pkg/profiles
65    o profiles: adding ptracer and ssh
66    o testreport: change multi-test output-file name
67      (from output.txt.{name} to output.{name}.txt)
68    o profiles: now ok for mutli-tiles case
69    o seaice: add 4 parameters for different advection schemes for area,
70      (effective) seaice thickness, enthalphy, and snow height. Their default
71      is the standard parameter SEAICEadvScheme
72    o calc_gw:
73     - add cosFacU in zonal viscous flux (harmonic.visc.).
74     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
75       of tutorial_plume_on_slope.
76    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
77    o calc_gw: true flux-form, account for horizontal grid spacing.
78      update rotating_tank results, but not plume_on_slope (affected at
79      truncation level, 11 digits).
80    
81    checkpoint58l_post
82    o calc_gw:
83     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
84     - remove side-drag for now (need to fix it); update plume_on_slope results.
85     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
86    o commit code to make SST/SSS weights spatially variable
87      (based on either variable in-situ or variable initial T/S weights)
88    o pkg/ecco:
89      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
90        now based on horizontally varying weights wthetaLev, wsaltLev
91      * cost_averagesflags now returns year indices in addition to day, month
92      * sflux balance is performed on annual basis
93        (sflxumm, sfluxmm2, bal_sfluxmm)
94      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
95        including separate counting and multipliers
96    o pkg/rbcs
97      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
98    
99    checkpoint58k_post
100    o testreport:
101     - always build in dir. "build" (if not there, mkdir build instead of building
102       & running in input)
103     - run in dir run (if it exists), in build otherwise.
104     - call prepare_run (if input/prepare_run exists)
105     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
106    o pkg/exf modifications to interpolation and rotation routines for more
107       reasonable treatment of North Pole singularity: for tracers North Pole
108       value is set to northernmost zonal-mean value, for zonal velocity it is
109       set to zero, and for meridional velocity it is set to northernmost value.
110    o pkg/exf/exf_check_range.F
111     - add tile index to diagnostics and move stop statement to the very
112       end of the routine.
113    o pkg/diagnostics: (diagnostics_main_init.F)
114      define title of isomorphic variables according to the current config.
115    o pkg/thsice with pkg/seaice dynamics:
116    - fix domain of computation (interior only, required for exf) and do exchanges
117    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
118    o towards a standard way of dealing with multi-threading in MONITOR
119      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
120    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
121       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
122    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
123    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
124    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
125       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
126    o tracer advection:
127     - clean-up and simplify calc_common_factors.F
128     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
129       advection subroutine (but still not used within DST advection S/R)
130    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
131    
132    checkpoint58j_post
133    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
134      from file (collects calls previously in FORWARD_STEP)
135    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
136    o adjoint store dir. adjusted accordingly
137    o genmake2
138      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
139    
140    checkpoint58i_post
141    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
142      on wind stress (SEAICEstressFactor defaults to 1.)
143    o Total number of Timers is finite (<=40): comment out 2 non-essential one
144      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
145    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
146      on CS-grid: no longer loosing mass.
147    o exf & curvilinear-grid: no longer modify longitude xC & xG.
148    o pkg/ggl90: fix sloppy output and fix a bug
149    o pkg/seaice: added SEAICEuseEVPpickup parameter
150      - Set to false in order to start EVP solver with
151        non-EVP pickup files when using SEAICEuseEVP
152      - fix sign error in diffusion in seaice_calc_rhs
153    
154    checkpoint58h_post
155    * Modifications for bottom topography control
156      o replace hFacC by _hFacC at various places
157      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
158      o add non-self-adjoint cg2d_nsa
159      o update autodiff support routines
160      o re-initialise hfac after ctrl_depth_ini
161      o works for 5x5 box, doesnt work for global_ocean.90x40x15
162    * Adding verification for 5x5 box (4-layer) bottom topography control
163    
164    checkpoint58g_post
165    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
166       used for mean seasonal cycle, mean diurnal cycle); add an example
167       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
168    o pkg/ggl90:
169      - add parameter (minimum surface kinetic energy)
170      - fix bug (avoiding division by zero)
171    o couple pkg/thsice to pkg/seaice:
172      - modify advection in seaice to accomodate new scalar fields to be advected
173      - only muliDimAdection scheme work with seaice/thsice
174      - mapping of thsice-variables to seaice-variables, back and forth
175      - does not break the verification experiments, but does not give the
176        desired results either
177    o pkg/seaice
178      - make (default) second order advection a bit less confusing?
179    
180    checkpoint58f_post
181    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
182      to pkg/seaice):
183      - new routines thsice_map_exf and thsice_get_exf provide the interface
184      - add an additional formal parameter to thsice_solve4temp
185    o pkg/exf:
186      - add new fields wspeed, snowprecip (to be able to couple to thsice)
187      - correct Stefan-Boltzmann constant
188      - new parameter for longwave surface emittance
189      - separate some stuff from exf_bulkformulae into new routines  
190        exf_radiation, exf_wind
191      - add new parameters and constants: longwave emissivity for ocean, ice
192        and snow, evaporation parameters over ice
193      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
194        either wind from stress or stress from wind
195    o pkg/thSIce:
196    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
197    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
198       and THSICE_CALC_THICKN
199    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
200    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
201      to make debugging easier.
202    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
203    o pkg/bulk_force:
204      - clean-up comments and parameters ;
205      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
206    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
207      generate new output for test-experiment: aim.5l_cs.thSI
208    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
209      testreport accordingly
210    
211    checkpoint58e_post
212    o SEAICE_CGRID adjoint done
213    o R_STAR adjoint implemented.
214      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
215      * need to sort out init. of h0facc, etc.
216    o Make pkg/profile fully independent of ecco,cost, etc. stuff
217      to be able to use it in pure forward.
218    
219    checkpoint58d_post
220    o upgrade simple test-experiment to tutorial example:
221     step.1: duplicate the experiment and (step.2) will remove the old copy.
222      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
223      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
224      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
225      tutorial_global_oce_biogeo    <- copy of dic_example
226      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
227      tutorial_plume_on_slope       <- copy of plume_on_slope
228      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
229      tutorial_global_oce_optim     <- empty for now (David ?)
230      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
231     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
232    o correct a sign problem in cost_scat.F
233    o obcs and ptracers: fix boundary conditions for advections schemes
234      with larger stencil
235    o thsice adjoint: start
236    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
237      completeness
238    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
239      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
240    o ptracers adjoint:
241      * avoid extensive recomputatations
242      * fix missing re-init. of gptr (missed by TAF)
243    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
244      me to turn off the excessive output to STDOUT that this package produces
245    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
246      and add those terms in Vector-Invariant formulation.
247    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
248      if the control period (xx_hfluxperiod etc) is 0
249    o in profiles pkg, clean routines and fix details
250    o in ecco pkg, reading ssh data:
251      fix problem in case the model does not start at iter0=0
252    o fix mnc-pickup/restart for ptracers
253    o new package prifiles:
254      code to compute profile-based cost by Gael Forget
255      (modifs in ecco, ctrl, autodiff)
256    o Benign bug fix in initialization (spotted by M. Mazloff) of
257      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
258    
259    checkpoint58c_post
260    o adjoint: finish NLFS adjoint and provide reference output in
261      verification/global_ocean.90x40x15/results_ad_nlfs
262    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
263      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
264      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
265      with SEAICE_CGRID defined.
266    o move calendarDumps from "data" to "data.cal" and clean-up the code
267      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
268    o add useEXF & useCAL flags (for now, set in hard-coded way)
269    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
270      (were missing in NH mode, and wrong in quasihydrostatic mode).
271      waiting for Chris updated version of calc_gw to add those CALLs.
272    o fix bug in quasihydrostatic S/R ;
273      add a test for this option: global_ocean.90x40x15.qshyd
274    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
275      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
276    o add on/off flag useOffLine for package OFFLINE
277    o seaice:
278      - modify advection so that it works also on the C-grid
279      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
280        problem in multi-tile runs with C-grid
281      - add flags for clipping ice velocities and/or masking solver forcing
282      - fix drag (ocean on ice) formulation and a bug that caused noise in the
283        C-grid solver
284      - added a few comments to seaice_diffusion.F
285      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
286        are now exclusive)
287      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
288        required re-ordering the code a little:
289       + make DAIRN global variable (defined in SEAICE)
290       + move computation of the viscosities eta and zeta into a new separate
291         routine (because I need to recompute them in seaice_ocean_stress.F)
292    
293    checkpoint58b_post
294    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
295      update output.txt of exp. aim.5l_cs.thSI
296    o various mnc cleanups and improvements:
297      + shrink lookup tables by factor of ~4
298      + better error reporting when running out of lookup space
299      + able to handle longer path/file names (up to 500 chars)
300    o adjoint:
301      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
302      - TBD: "hidden" mom_vecinv recomp. in dynamics
303    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
304     (allow to differentiate between forcing components using new integer flags:
305      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
306     and add new flag to put Dissipation tendency out of Adams-Bashforth.
307    o ecco
308      - enable trend removal from SSH anomaly obs.
309    o adjoint
310      - a fix for PmEpR when #undef EXACT_CONSERV
311      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
312      - try to fix "hidden" recomp. in forward_step for NLFS
313        (NLFS seems broken sometimes after I checked it in)
314    o seaice:
315     - add c-grid version of the dynamic solver:
316       + three new routines that are the c-grid substitute lsr, dynsolver
317         and ostres
318       + put a few fields that were local to dynsolver into global common
319         blocks, so that I can move the computation of stresses etc into
320         seaice_lsr (saves coding but may break the adjoint).
321     - replace more hardwired parameters by runtime parameters
322     - add ice masks that mask the rhs of the implicit solvers where there
323       is no ice (commented out in seaice_dynsolver, because i am not sure
324       if this works properly), eventually this should replace the clipping
325       of ice velocities in seaice_dynsolver to +/-40cm/s.
326    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
327      include it only where its needed
328    o move balancing of fluxes before the call of external_forcing_surf
329    o seaice:
330      - correct units of turning angles (now they are really in degrees)
331      - move computation of GWATX/Y out of main routine into dynsolver
332      - initialize GWATX/Y in seaice_init
333    o Apply mask on Fresh-Water flux (needed for SSH forcing).
334      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
335    o seaice: add runtime flags for turning angles (default to zero)
336    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
337      and trend from exf forcing and ctrl control adjustments
338    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
339      (since checkpoint57x_post)
340    o change the default rotation period to 86164.s = the Earth rotation
341    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
342      and based on a reference stratification. Tested within hs94.cs-32x32x5.
343    o seaice advection: add code for choosing between the default (2nd order
344      central differences) and multiDim advection schemes provided by
345      pkg/generic_advdiff
346    o seaice:
347      - removed all references to SEAICE_GRID.h fields from
348        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
349        (cubed-sphere configuration will change a little)
350      - grid computations in seaice_init are obsolete now.
351      - cleaned up code a little so that is easier to read (hopefully).
352      - added new (better?) discretizations of default advection and diffusion
353        (turn on with SEAICEuseFluxForm)
354      - replace 1 in 3d global fields by kSurface in growth.F
355      
356    checkpoint58a_post
357    o seaice:
358      - bug fix in advect.F
359    o shelfice:
360      - separate shelfice load anomaly from pload (breaks with time
361        dependent forcing), => introduce constant field shelficeLoadAnomaly.
362        Its default is 0., but it may be computed more cleverly from (unknown)
363        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
364        done offline. A good approximation of the pressure load anomaly is
365        necessary to avoid large initial adjustment processes underneath
366        deep-reaching shelfice.
367      - small fix in ISOMIP shelfice_thermodynamics
368      - add more sophisticated thermodynamics of Hellmer (1989), this is
369        now the default
370      - give a few constants more intuitive names
371    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
372      if bulk formulae are used in long integration (especially EmPmR). Turn
373      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
374      if balancePrintMean, the imbalance that is substracted is printed to
375      STDOUT.
376    o fix bug (typo) in obcs_apply_eta.F
377    o add a new package shelfice which enables us to model the circulation
378      underneath shelf-ice with draughts of hundreds of meters.
379     - works
380     - to do: + include improved thermodynamics
381              + check whether kSurfC (from model/inc/SURFACE.h) can be used
382                instead of new field kTopC
383              + can we use topoFile, Ro_surf and existing code in ini_depth.F
384                instead of new field R_shelfIce and new code in ini_depth.F
385                and ini_mask_etc.F?
386              + adjust vertical mixing schemes?
387    o seaice pkg:
388     - add a cpp-flag to include a simple formula for a salinity dependent
389       freezing point of sea water at the surface
390     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
391       meridional stresses are now different (and hopefully correct)
392    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
393       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
394       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
395    o pkg/diagnostics: add options and parameters for regional-statistics
396       diagnostics ; define regions by reading a region-mask from a file
397       (might add other options later)
398    o pkg/bulk_force:
399     - add option and parameters to use AIM surface-flux formulae.
400     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
401       others forcing fields (defined in PARM05, parameter file "data") are loaded
402       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
403     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
404     - use the right EXCH call for uwind,vwind (to work on CS-grid).
405     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
406       and parameters (note: calcWindStress replaces .NOT.readwindstress).
407     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
408    
409    checkpoint58
410    o add "--embed-source" option to genmake2 which, when the supporting
411      tools can be compiled (as determined by genmake2) will turn on the
412      embed_files package which then embeds the entire MITgcm source code
413      (*.[fFhc] + Makefile) used for the build within the executable
414      - requested by CNH but off by default
415      - adds a paltry <9MB to the mitgcmuv executable in most cases
416      - only writes the output when useEMBEDSRC in eedata is true
417    o clean up 3-dim. relaxation codes:
418      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
419      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
420      * Thanks to Tom Haine for testing!
421    
422    checkpoint57z_post
423    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
424      affects output (@ truncation level) of exp. plume_on_slope ; updated.
425    o fix the pickup behavior for obcs in combination with ptracers
426    o fix a bug in ptracers_external_fields_load
427    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
428      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
429    o transfered surface NH pressure to eta field (if exactConserv).
430    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
431         and update lab_sea output.txt file.
432    o completing 3-dim. relaxation code: additional term
433         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
434      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
435      * At compile time, in "EXF_OPTIONS.h" set
436          #define  ALLOW_CLIMTEMP_RELAXATION
437          #define  ALLOW_CLIMSALT_RELAXATION
438      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
439          tauThetaClimRelax3Dim = 15552000.0,
440          tauSaltClimRelax3Dim  = 15552000.0,
441      * 3 cases:
442          1) Use a constant-in-time 3-dim. field
443          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
444          3) Real-time relax. to time-evolving prescribed field
445    o Adding Laplacian-type smoothness constraint on
446      initial and boundary (forcing) controls (ic, bc)
447      * enable at compile-time via
448        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
449      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
450      * Absolute scale somewhat unclear so far
451      * no area weighting was included since no other cost term does so far
452    
453    checkpoint57y_post
454    First step for a NLFS adjoint
455    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
456    o new init. routines for calc_r_star, calc_surf_dr
457    o still need to deal with ini_masks_etc
458    o testreport seemed happy
459    checkpoint57y_pre
460    
461    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
462    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
463    o add new offset feature to offline pkg (plus minor cleanup)
464    o cfc fixes for final year of integration
465    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
466      be in GCHEM_OPTIONS).
467    
468    checkpoint57x_post
469    o fix testreport Pb in multiple test experiment.
470    o cleanup our namelist syntax in verification:
471      - make it more F95 standards compliant (some work still needed)
472      - allows the vast majority of our tests to work with gfortran
473    o Non-Hydrostatic:
474     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
475     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
476    o Allow to apply AB on T,S rather than on AB(gT,gS):
477     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
478     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
479       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
480     - need a "clever" read_pickup to restart from the other AB formulation
481    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
482    o remove some unused variables (reduces number of compiler warnings)
483    o adjoint
484      * Disable useVariableViscosity for adjoint for time being
485        (there are a number of extensive recomputations)
486      * Initialize certain variables needed for adjoint
487    
488    checkpoint57w_post
489    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
490                 fix the singleCpuIO RS version of MDSWRITEFIELD
491       and add a WARNING if using globalFiles=T with multi-processors.
492    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
493      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
494    o tracer advection scheme:
495      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
496       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
497       was not very convenient).
498      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
499       (further tests needed for the implicit DST & Flux-Limiter schemes).
500    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
501      and sRef for convenience, handy, when you want to initialize
502      ptracers in a large domain with a constant non-zero value. Also,
503      untangle ptracers_init.F a little.
504    
505    checkpoint57v_post
506    o change dome exp. to use variable viscosity in side-drag terms.
507    o remove all the files from the cfc_offline test since they are now
508      incorporated into tutorial_cfc_offline which has been producing
509      identical results for a few days of testing
510    o add new parameter: sideDragFactor to enable half-slip-side BC
511      and change side-drag S/R to use viscosity from mom_calc_visc
512      (can switch back by setting sideDragFactor=0.); affects results at
513      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
514       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
515    o vorticity & strain are now computed without masking, to account for
516      no-slip-side BC in variable viscosity calculation ; mask is applied
517      anyway later on, before computing advection/coriolis terms.
518    o modify exp4 to test new obcs support for reading from external files
519      and for passive tracers
520    o fix behavior of ptracers_monitor when monitor output is written to a
521      netcdf-file; still not independent of monitor.F (writes in the same
522      file).
523    o change default value of tRef (put a uniform, meaningful value for ocean
524      & atmos) and initialize sRef (was missing, as Martin mentioned).
525    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
526      to be proportional to enstrophy dissipation length.  Thus,
527       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
528      This is now consistent with Smagorinsky and with the manual.
529    
530    checkpoint57u_post
531    o OBCS and PTRACERS: add open boundary support for passive tracers
532      - either use homogenous (pseudo) v.Neumann conditions or prescribe
533        OB-values from file; this is not different from the way theta and salinity
534        are treated
535      - however, Orlanski-radiation conditions are not supported, and the model
536        will stop if you use pTracers and Orlanski at the same time.
537      - beefed up the rountine obcs_external_fields_load: now only those open
538        boundary values are overwritten with values from files for which there
539        are really files, otherwise the OB-fields remain untouched. This makes
540        it possible to use different OBs at different ends of the domain (as
541        with EXF)
542    o reduce number of exch calls in shap_filt (s2).
543    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
544      truncation level) 4/5 MLAdjust test results (11&12 digits match).
545    
546    checkpoint57t_post
547    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
548    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
549      same truncation, independent of the face number: affects affects several
550      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
551    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
552      note that biharmonic viscosity + no-slip was not tested in any experiment.
553    o fix bug in non-linear free-surf side-drag ; generate new output for
554      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
555    o make mnc honor the writeBinaryPrec flag for most kinds of output
556    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
557    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
558      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
559    o add brackets in multi-terms sum to get same truncation, independent of
560      the face number (manage to get exactly same value of gU,gV at the cs-edge)
561      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
562    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
563      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
564      a maximum grid-scale Reynolds number.  Also, changes all length calculations
565      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
566      Suggested values of viscosity parameters found in mom_calc_visc.
567      Many new viscosity diagnostics available.
568    
569    checkpoint57s_post
570    o Add clearing-house for viscosity calculations, mom_calc_visc and
571      correct numerous bugs in LeithD and Smagorinsky discretizations.  
572      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
573      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
574      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
575      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
576      The Strain-Tension form is now called with useStrainTensonVisc=.true.
577      ViscAhStrain and viscAhTension are now retired.
578    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
579    o In response to JMC's bug report, genmake2 now ignores any soft-links
580      that it finds in the *current* directory when searching for files.
581      Soft-links found in any other source directories will still work as
582      they did before.
583    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
584      a C routine to unlimit the stack size
585    o mnc-ify pkg/aim snapshot vars
586    o mnc-ify pkg/land as requested by Daniel
587    o various changes to mnc including:
588      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
589      - output can now be grouped so that all files within a group
590          change the ITER portion of their names in lock-step together
591      - can now read ("global") PER-FACE (in addition to PER-TILE) files
592          and works with both EXCH1 and EXCH2 (but needs more testing)
593      - writing works for all verification test cases w/ g77 on Linux
594    
595    checkpoint57r_post
596    o make MNC variable initialization happen earlier
597    o add diagnostics for (almost) each term of the momentum Eq.
598    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
599    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
600    o remove MINIMAL_TAVE_OUTPUT option ;
601      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
602    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
603      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
604    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
605    o add time-dependent SST, SSS control
606    o cost terms in ecco/ modularized (new cost_generic.F)
607    o cost_averages routines are modularized (new cost_averagesgeneric.F)
608    o new infrastructure for seaice model vs. obs misfits in seaice/
609      * driver from the_main_loop.F is seaice_cost_driver.F
610      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
611      * gradient check in Exp. 6a of natl_box_adjoint/
612    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
613      (see README file)
614    
615    checkpoint57q_post
616    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
617    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
618      - bug was reported by Jean-Michel and Ian Fenty
619    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
620      update exp. cpl_aim+ocn output.
621    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
622      Needed for high-res. runs with large global files
623      to be able to limit tapelev size
624    o Changed some tests for adjoint:
625      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
626      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
627      * global_ocean.90x40x15/ back to default 3-level checkpointing
628    o Modifications to enable scripted COMMON to MODULE conversion
629      * verification/OpenAD/code/ has necessary scripts and description;
630      * converts, compiles and runs successfully;
631    
632    checkpoint57p_post
633    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
634    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
635      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
636    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
637    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
638      (was already the case for dissipation with mom_vecinv,
639       and also the case for grad.PhiHyd when staggered-timeStep)
640      This will allow to put dissipation out-off the AB time-stepping.
641     Unfortunately, affects truncation error. Update output of exp. that "fails"
642      (cg2d matching number) and leave the others for later: front_relax(10),
643      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
644      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
645    
646    checkpoint57o_post
647    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
648      (2) its ready to be documented during the 20050801 DocFest
649    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
650      for ideal_2D_oce and lab_sea on linux_ia32_g77
651    o set to #undef CTRL_SET_OLD_MAXCVARS_30
652      in global1x1_tot/code_seaice_adj to access indices 32, 33
653      (worth another tag)
654    
655    checkpoint57n_post
656    o adding precip control xx_precip 32
657    o adding swflux control xx_swflux 33
658    o Replacing 10 forcing penalty cost routines by 1 generic.
659    o Implementing partitioning in time-mean and variable adjustment
660      for atmos. state.
661    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
662    o in natl_box_adjoint:
663      * updated exp 1 to 10
664        (but does not have time-mean vs. variable split results yet)
665    o updated global1x1/*_seaice_adj/
666      to incorporate latest changes
667    o enable useSingleCpuIO for mdsio vector routines
668      (applies in particular to tapelev I/O)
669    o removed inefficient K-loop in all active_file*control*.F
670    
671    checkpoint57m_post
672    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
673      and advect_cs (use EXCH-2 and standard cs-32 grid files).
674    o pkg/exch2: filling of face-corner halo regions is optional
675      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
676    
677    checkpoint57l_post
678     tag before updating tutorials (pre-release-2)
679    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
680       for output and interpolation of input fields onto model grid)
681    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
682       Affects results of exp. rotating_tank ; update output.txt.
683    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
684          and taking the square quantity and/or using a fraction-weight field.
685    o fix aim_diagnostics_init.F mate numbers.
686    o add mnc output capability to diagnostics/diagstat and update
687      our cvsignore files for the ACSII output generated
688    
689    checkpoint57k_post
690    o lab_sea now uses diagnostics package and provides a suite of
691      new EXF diagnostics output.
692    
693    checkpoint57j_post
694    o exf
695      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
696        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
697        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
698      * extended diagnostics output
699        - now includes all EXF variables
700        - hs, hl moved to common block
701        - separate S/R for diagnostics, called after ctrl vector is added
702        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
703        - EXFqnet contains true Qnet (i.e. includes qsw)
704      * updated verif. lab_sea, global_with_exf
705      * Rearranging hflux (exf_mapfields -> exf_getforcing)
706        to ensure that diagnostics sees a true EXFqnet
707    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
708    o diagnostics pkg: change pointers so that 1 diagnostic can be used
709      several times with different frequencies.
710    o mnc-ify the thsice package as requested by Daniel Enderton
711      - the monitor--MNC output needs work
712      - many attributes need to be added (most are currently blank)
713    o mnc-ify theaim_v23 package as requested by Daniel Enderton
714      - many attributes need to be added (most are currently blank)
715    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
716    o add Sadourny like discretization to the 4th.O vorticity advection scheme
717    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
718      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
719         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
720    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
721     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
722    
723    checkpoint57i_post
724    o Diagnostics package was changed: diagnostic allocation is now deactivated
725      by setting an empty file name in the namelist (used to be by setting 0 frequency)
726    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
727      add 1rst Order upwind vertical Shear.
728    o add a quick fix for A/B checkpointing in OFFLINE mode
729    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
730      end-run around the C/Fortran linking horror in eesup/src/timers.F
731    o added pkg/runclock: allows user to terminate run based on wall clock
732    o added non-hydrostatic scaling parameter: nh_am2
733    o pkg/my82: futile attempt to make results compiler-independent by adding
734      some "_d 0", etc. no effect.
735    o for mnc output, fill the 'T' coordinate var with myTime and create a
736      separate 'iter' variable for iteration count
737    o pkg/diagnostics:
738      add new capability: output of Global/Regional & per-level statistics ;
739      tested against monitor output (including land & thSIce) on various exp.
740    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
741    
742    checkpoint57h_done
743      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
744      data.diagnostics, data.gchem, data.ptracers) is done.
745    
746    o pkg/diagnostics: prepare for Global/Regional statistics.
747      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
748    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
749      and rename it: DIFFERENT_MULTIPLE
750    
751    checkpoint57h_post
752    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
753    o pkg/diagnostics: change output frequency, now in seconds (instead
754      of Nb of iterations). This requires to change data.diagnostics.
755    checkpoint57h_pre
756    
757    o in mnc, let the user create the output dir if both mnc_outdir_date
758      and mnc_outdir_num are false
759    o add fflags() to pkg/diagnostics which allows one to specify, on a
760      per-file basis, the file precision [default behavior is unchanged]
761    o added diagnostics to pkg/kpp, including computation of mixed layer
762      depth based on a temperature/density criterion
763    o updated verification/natl_box to test the new pkg/kpp diagnostics
764    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
765    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
766    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
767      not mnc -- this mistake was found by JMC and is now corrected
768    
769    checkpoint57g_post
770    o add Adams-Bashforth 3rd Order time stepping:
771      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
772      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
773    checkpoint57g_pre
774    
775    o make lambda[Theta,Salt]ClimRelax spatially varying
776      (default remains spatially uniform constant based on tau)
777    o added new control variables
778      * init. uVel, vVel, etanN
779      * lambda[Theta,Salt]ClimRelax
780    o separate masks used for ctrl_pack/unpack 'from write_grid' output
781      (suggested by G. Forget)
782    
783    checkpoint57f_post
784    o add parameter "baseTime" = model base time = time at iteration zero
785      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
786      account for baseTime shift
787    o move Coriolis arrays from PARAMS.h to GRID.h
788    checkpoint57f_pre
789    
790    o mnc-ifying the seaice package
791    o introduced an alternative length scale calculation for use in the limiting
792      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
793    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
794    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
795      as well as grad(vort3).  Made it compatible with both approximate form
796      for the cubed sphere and full form of these gradients.  Added flag
797      useFullLeith to select between approximate and full form.  
798    o add "d0" in getcon.F to reduce differences between compilers/platforms
799      update output.txt of exp. fizhi-gridalt-hs
800    o change port_rand funtion to allow to set the seed.
801    o fix obscure MNC bug involving conversion between reals and integers
802      - it caused no problems with certain (eg. gcc, ifc) compilers but the
803        new version is now more standards-compliant
804    o adjoint-related modifications
805      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
806      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
807      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
808    
809    checkpoint57e_post
810    o Adding eddy stress controls a la Ferreira et al.
811    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
812    
813    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
814      update output.txt of exp. fizhi-gridalt-hs
815    o add more "Z" dimensions and associated coordinate vars to MNC
816    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
817    o parameter calendarDumps: when set, approximate months (30-31 days) and years
818      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
819      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
820      months and years.  Requires pkg/cal.
821    o diagnostics: add pickup functionality
822      - off by default for backwards compatibility
823      - current version only uses MDSIO -- MNC will be added
824    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
825    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
826    
827    checkpoint57d_post
828    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
829    o modify verification/ideal_2D_oce so that it tests the creation of mnc
830      output from the diagnostics package
831    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
832    o make genmake2 more portable by using ".$FS" instead of ".f" for more
833      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
834    o add coordinate variables to the MNC output from the diagnostics package
835    o change MNC-flags default value: true when useMNC=TRUE
836    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
837      the ability (off by default) to read the grid information using MNC
838    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
839    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
840    o do snap-shot diagnostics at the middle of the time-interval (instead of
841      at the end).
842    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
843      new test for AIM with thSIce + slab-ocean
844    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
845    o move state variable diagnostics to the beginning of the time step ;
846      (note: still needs some work specially for snap-shot diagnostics)
847      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
848    
849    checkpoint57c_post
850    o Change testing option (-ieee) to get closer agreement between g77 & ifort
851    o generate new output.txt files on faulks with g77 & the new -ieee option
852    checkpoint57c_pre
853    
854    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
855      update output.txt of exp. global_ocean.90x40x15
856    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
857      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
858    o add saltFlux(+File) forcing capability with periodicExternalForcing
859    o allow to use pkg diagnostics for GM-Redi & ThSIce output
860    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
861    o improvements for the MNC output from DIAGNOSTICS:
862      - correct handling of the unlimitied dimension
863      - all dims now have associated coordinate variables
864      - variables located at U, V, and Corner ("Z") points are now written
865        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
866        *all* data points are output
867    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
868    o added pkg/seaice/seaice_monitor.F
869    o mdsio_readfield.F can now read files visible only to master MPI process.
870    o pkg/seaice: some test code for ice-modified ocean stress
871    o exf_getffields interpolation defaults to bilinear for all scalar forcing
872      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
873      spurious negative numbers for precipitation and humidity.  Will cause
874      some small numerical differences for integrations using pkg/exf/exf_interp.F.
875    o pkg/ctrl/
876      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
877        May be enabled via doPackDiag
878      *  introduce z-scaling of
879         + gradient (doZscalePack) and
880         + control (doZscaleUnpack)
881    o pkg/mdsio/
882      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
883      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
884    
885    checkpoint57b_post
886    o simplify options in diagnostics_fill arguments (remove weird combinations)
887    o fix MNC coordinate variables so that they now contain per-face index
888      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
889      general, EXCH2 grids are only aligned to a "local" coordinate system
890    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
891    o Implement instantaneous output within pkg diagnostics:
892      setting a negative frequency in data.diagnostics produces
893     "snap-shot" output (as opposed to time-average if freq > 0)
894    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
895      NOTE: change ptracer diagnostics name: use 2 characters to work with
896            more than 9 tracers. Add also diagnostics of advect & diffus flux.
897    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
898      becomes the coordinate variable for the 'T' dimension
899    o add CF-style coordinate variables to MNC
900      - just a first cut:  numbers are meaningless on the cubesphere and
901        missing along the T axis but otherwise it works!
902    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
903    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
904    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
905      this is based directly on what the model compute, so that the content of
906      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
907    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
908    o clean up build options files for SunOS, in particular
909      - remove -traditional from xmakedepend
910      - change -xarch=v9 to -xarch=native for f77
911      - restore use of make (not gmake)
912      - add CC=gcc if using g77
913    o changes per discussion of AM, JMC, & EH3 today:
914      - move redundant "grid" variables out of "state" -- in preparation of
915        creating proper CF-style coordinate variables and in recognition
916        that any/all grid variables can be easily copied (eg. w/NCO) from
917        the grid files into any of the other NetCDF files
918      - *always* output grid variables with MDSIO (this will eventually be
919        changed)
920      - output MNC grid file if useMNC is true
921    o every instance of _END_MASTER() has been found and replaced with
922      _END_MASTER( myThid ) in order to satisfy certain picky Sun
923      preprocessors
924    o re-arrange diagnostics pkg initialisation:
925     - allow each package to extend the available diagnostics list
926     - add some checking and fix small problems (multi-threaded, ...)
927     - new S/R diagnostics_fill (replace fill_diagnostics):
928       look through the short list of active diag. (instead of the long list)
929       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
930    
931    checkpoint57a_post
932    o this set of changes restores TAMC compatibility
933      tested for global_ocean.90x40x15 adjoint on trough
934      (what a pain)
935    
936    checkpoint57a_pre
937    o some modifs in tools/build_options for sunos
938    o call ctrl_pack for ctrl at end for optimcycle=0
939    
940    checkpoint57
941    o add horizontal bi-harmonic viscosity for vertical velocity
942      - new parameter viscA4W (defaults to viscA4)
943      - affects only non-hydrostatic code
944      - to be done: no-slip lateral boundary conditions
945    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
946    o implement Implicit Vertical advection for pTracers
947    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
948      (implemented also for implicit vertical diffusion & advection)
949    o OBCS: extend application of tracer open boundary conditions
950      to a strip beyond the boundary of width Olx/Oly
951    o add call monitor to TAF set of required calls (flow directives)
952      and include in natl_box_adjoint
953    o untangle a few ifdefs related to cost, ctrl, autodiff
954      untangel a few ALLOW_ECCO_OPTIMIZATION
955    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
956      (theta2, salt2 in ecco_cost_weights)
957    
958    checkpoint56c_post
959    o OBCS as control variables
960      - update ctrl_ad_diff.list, obcs_ad_diff.list
961      - remove balance of obcs controls from default
962      - fix index bug nobcs in ctrl_init
963      - fix dummy fields filen in ctrl_pack
964      - add dummy weights for obcs
965    o lsopt: comment out fort.94 output
966    o optim:
967      - remove unnecessary header files
968      - adjusted namelists
969      - add xerbla.F to Makefile
970    o exf:
971      - multiple modifications of exf_check_range
972      - unit change in exf_init_runoff from [m/year] to [m/s]
973    o mdsio:
974      - i/o-vector change debugLevel from debLevA to debLevB
975    
976    checkpoint56b_post
977    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
978      is called from DO_THE_MODEL_IO
979      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
980      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
981      - clean up PTRACERS_WRITE_TIMEAVE a little
982    o add another verification experiment that tests both the cfc-pkg and
983      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
984      reactive tendencies treated inline with regular timestepping
985    o testreport previously did a lousy job of comparing small numbers, so
986      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
987      implemented in the little c-progam tmp_cmpnum.c which is embedded in
988      testreport.
989    o ptracers_monitor: bug fix for MPI
990    
991    checkpoint56a_post
992    o GCHEM: finish reorganizating the package
993      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
994        (introduces another 3D-array for each passive tracer, but only if
995        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
996        gchemTendency is not needed because the timestep is done separately)
997      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
998      - GCHEM is now---more or less cleanly---separate from PTRACERS
999      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1000        so clear to me how that should be done in a general way.
1001    o CFC: improve formatting of output in CFC_ATMOS
1002    o PTRACERS:
1003      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1004        that ALL experiments with ptracers enable can be checked. This makes
1005        GCHEM_MONITOR obsolete.
1006      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1007        monitorFreq
1008      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1009    o add PTRACERS (PTR0[1-5]) to testreport output
1010    o exf_check_range:
1011      * default changed to .TRUE.
1012      * will check values for niter0 if debLevA, every timestep if debLevB
1013      * STOP in exf_check_range if 'out of range'
1014      * range chosen generous to allow for potential extema
1015      TBD: a version with stricter range
1016           permitted range would be runtime parameters
1017    o GMredi:
1018      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1019      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1020      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1021    o GCHEM:
1022      - move call to GCHEM_FORCING_SEP, so that it is now called before
1023        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1024      - introduced a useGCHEM runtime flag and applied it everywhere.
1025      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1026        this flag is now only visible within GCHEM-pkg routines.
1027      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1028        be replaced by a 3D array that is computed before thermodynamics; for
1029        this, the tracer ID iTracer had to be included into the parameter list
1030        of ptracers_forcing
1031      - set up forward_step to call gchem_forcing, that will replace
1032        gchem_forcing_int in ptracers_forcing
1033      - cleaning up
1034    o small cleaning of exch2: remove files that are also in eesupp/src
1035    
1036    checkpoint56
1037    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1038    o mnc: cleanup "full" files--fixes out-of-memory problem
1039    o ECCO-GODAE
1040      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1041      * fully merged and updated from SIO code
1042        windstress sign change affects
1043        - exf_inscal_[u/v]stress
1044        - sign of xx_tau[u/v] adjustments
1045        - signs in cost_scat
1046      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1047      * natl_box_adjoint updated and compressed
1048      * 2-level checkpoint switch added
1049        (tested in EXP. 1 of natl_box_adjoint)
1050      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1051    o SVD
1052      * first complete, non-hacked version for SVD calculations
1053      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1054        performed via direct access files admtlm_vector.it????
1055        (via ctrl_[un]pack)
1056      * optimcycle is used for ARPACK iteration counter
1057        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1058      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1059        and add linear transforms where necessary
1060      * controls are initial/final SST, SSS (can be extended; need to check
1061        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1062    o mdsio: filename info to both stderr, stdout
1063    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1064      from sign change
1065    
1066    checkpoint55j_post
1067    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1068      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1069    o add consistent build directories and .cvsignore files to verification
1070    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1071    o make all subroutines 30 or less characters in length for certain older
1072      compilers to work (a thorough search only turns up two routines in
1073      pkg/ptracers)
1074    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1075      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1076    
1077    checkpoint55i_post
1078    o change arrays for total vertical diffusivity (2.D if explicit,
1079      3.D if implicit) ; each ptracer uses its own background value.
1080    o added mnc/NetCDF output capability to ocn_compon_interf
1081      - added bits to verification/cpl_aim+ocn so that it can run on
1082        ITRDA and other clusters without the mpirun "-wd" option
1083    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1084      configuration
1085    o give MNC the ability to create additional files rather than
1086      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1087      - the default is just less than 2GB which is a practical limit
1088        on many systems
1089    o Compute the non-local term using either KPP vertical diffusivity (=default)
1090       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1091    
1092    checkpoint55h_post
1093    o add verification test "vermix"
1094    o remove all the *_ioinc flags and replace with the single global
1095      outputTypesInclusive flag
1096    o allow to set a vertical profile of vertical diffusivity for T & S
1097    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1098    o useMNC moved from data.mnc to data.pkg
1099    
1100    checkpoint55g_post
1101    o Renaming carbon AD experiments to comply with testreport conventions
1102    o Updating adjoint of Held-Suarez hs94.1x64x5
1103    o Fixing directives for non-ECCO forward_step, after ECCO directives
1104      have been fixed to avoid recomp. of do_oceanic_phys
1105      Works well for global_ocean.90x40x15,
1106      but recomp. issue remains for carbon
1107    o Updating adjoint output for natl_box_adjoint after
1108      pkg/ecco has been modified (see taga c55d_post)
1109    
1110    checkpoint55f_post
1111    o rename to timeave_init_fixed
1112    
1113    checkpoint55e_post
1114    o some delicate re-shuffle of store directives to avoid one
1115      extra call of do_oceanic_physics
1116      affects ecco_the_main_loop.F, do_oceanic_physics.F
1117      checkpoint_lev1_directives.h
1118    o NB: this may break global_ocean adjoint temporarily,
1119      but it is clear how to fix it. Will do later, need this now.
1120    
1121    checkpoint55d_post
1122    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1123    o ecco_cost_weights is modified to 1x1 runs
1124    o modifs to allow observations to be read in as
1125      single file or yearly files
1126    o enable to read exf forcing fields as either
1127      single file or yearly files (flag useExfYearlyFields)
1128    checkpoint55d_pre
1129    
1130    o switch between 2-level and 3-level checkpointing
1131    o add ability of MNC to write local and "partial" (eg. 2D slices where
1132      the full 3D field is never actually stored) arrays to NetCDF files
1133      with the correct (that is, the complete multi-dimensional) set of
1134      array indicies
1135      - used in mom_vecinv() to write the diagFreq output
1136      - tested (demonstrated) in verification/aim.5l_cs
1137    o further mnc-ification
1138      - add verification/lab_sea to the list with mnc setups
1139      - fix undefined mnc v-names in cd_code
1140      - add kpp to mnc output (both snapshot and timeave)
1141    o non-hydrostatic code
1142      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1143        in calc_gw.F
1144      - defaults to viscAh
1145      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1146        friction or Leith) in non-hydrostatic mode, as long as there is
1147        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1148    o pkg/cost
1149      extend simple cost functions to treat time mean quantities
1150      (T,U,V) via cost_accumulate_state from cost_tile
1151    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1152        be 2 times larger than the minimum size the advection scheme requires.
1153        now get a perfect conservation of salt in advect_cs test-exp (updated)
1154    o GGL90 (Gaspar's TKE mixed layer)
1155      - add horizontal diffusion of TKE, requires exchanges in
1156        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1157        default. In OPA there is no horizontal diffusion of TKE but the
1158        mixing coefficients are computed from a horizontal average of TKE of
1159        6 points or so. I think that diffusion has a little more physical
1160        justification.
1161      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1162        was in vain)
1163      - mask tke-variable in ggl90_init
1164    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1165    o fix biharmonic diffusion on CS-grid.
1166    o more obcs stuff
1167      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1168        for reading boundary values. This routine is called from
1169        obcs_prescribe_read
1170      - updated obcs_check
1171      - changed sponge layer relaxation parameter units for days to seconds
1172      - turned off sponge layer by default
1173      - changed argument list of OBCS_CALC to myTime+deltaTclock
1174      - fixed about 35 bugs in obcs_external_fields_load
1175    
1176    checkpoint55c_post
1177    o obcs stuff
1178      - new runtime flags useOBCSprescribe, useOBCSbalance
1179      - re-arranged obcs_calc
1180      - moved exf_getobcs to obcs_prescibe_read
1181        obcs_prescibe_read is called after ORLANSKI stuff
1182        and independent of it (executable can contain all).
1183      - updated obcs_check
1184      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1185        These may be necessary only if tangential velocities are
1186        prescribed at OB, not sure, needs testing.
1187    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1188      which simplifies the calls and passes the ifc check-bounds test
1189    
1190    checkpoint55b_post
1191    o add a 2D scalar, Z location, exchange_2 routine.
1192    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1193      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1194      affects advect_cs results (for the wrong reason): update output.txt
1195    o use a more standard discretization for biharmonic viscosity ;
1196     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1197      affects results of dome set-up: update output.txt
1198    o fix gad_advection.F (CubedSphere part), back to version 1.23
1199    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1200    
1201    checkpoint55a_post
1202    o merged code to
1203      * prescribe/read time-dependent open boundaries
1204        (works in conjunction with exf, cal)
1205      * sponge layer code for open boundaries
1206      * each boundary N/S/E/W now has its own CPP option
1207        (healthy for the adjoint)
1208    
1209    checkpoint55
1210    o up-to-date adjoint of previous breaks
1211      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1212      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1213      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1214      - carbon: * remove tr1-related adjoint verification
1215                * add ptracer as control variable
1216    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1217      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1218    
1219    checkpoint54f_post
1220    o in verification/carbin/ remove experiment related to
1221      ALLOW_PASSIVE_TRACER (array tr1 etc)
1222      code_ad/ input_ad/ results_ad
1223    
1224    o add two new packages
1225      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1226        + subject to optimization (memory)
1227      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1228        + subject to reordering (many GOTOs in the original code)
1229        + so far opps is called for every (i,j) point, and then operates in
1230          the vertical; one may want to reorder the scheme in order operate in
1231          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1232          fields)
1233    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1234      - all verification tests compile and run with linux_ia32_g77
1235      - defaults are compatible with current input files--nothing
1236        should change if you were not previously using MNC
1237      - MNC output has been added in numerous places (eg. timeave)
1238        but there are still a few writes not yet do-able with MNC
1239        (this is in progress)
1240      - flags now allow for either/or/both use of MDSIO and MNC and
1241        documentation will soon follow
1242      - numerous small formatting cleanups for ProTeX
1243    o add version info (via BUILD_INFO.h) to MNC and stdout
1244    
1245    checkpoint54e_post
1246    o add two new packages
1247      - pp81 (Packanowski and Philander, 1981), Richardson number and
1248        stratification dependent mixing
1249      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1250      - these scheme operate in a similar manner as KPP (without ghat, of
1251        course), however there is only one diffusivity that is used for both
1252        temperature and salinity (and passive tracers)ç
1253    o add offline package
1254    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1255      provided by Stephanie Dutkiewicz
1256    o genmake2: add ability to search for C compilers and cleanup test output
1257      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1258    
1259    checkpoint54d_post
1260    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1261    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1262      leading to additional shift by 5 days each year of integration
1263       (i.e. leading to considerable offset over the years)
1264    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1265    o start with no AB and no initial filtering (staggerTimeStep):
1266      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1267    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1268      (external loading & cpl import/export stay in forward_step.F)
1269    o update coupling interface to work with new staggerTimeStep
1270    o change MDSIO ptracers_pickup.
1271    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1272    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1273    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1274    
1275    checkpoint54c_post
1276    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1277      this affects (truncation error) output.txt of test-exp:
1278       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1279    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1280    o change Qnet to always be the net heat flux, (+upward).
1281      affects (truncation error) output of natl_box exp.: updated
1282    o define the max number of passive tracers in PTRACERS_SIZE.h
1283    o start to test mnc routinely in exp0
1284    o add sea-ice loading (sIceLoad) as a new forcing field.
1285    
1286    checkpoint54b_post
1287    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1288       impressive on Altix and Opteron systems)
1289    o diagnostics can now write NetCDF files through the mnc package
1290    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1291    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1292    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1293      affects (truncation error) output of lab_sea & natl_box exp.: updated
1294    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1295    
1296    checkpoint54a_post
1297    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1298    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1299    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1300    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1301      + internal_wave (shift in writing cg2d_ini_res)
1302    checkpoint54a_pre
1303    
1304    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1305      - modified verification/lab_sea and natl_box_adjoint accordingly
1306    
1307    checkpoint54
1308    checkpoint53g_post
1309    o prepare splitting of thermodynamics: store convect.counter in common block
1310    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1311      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1312    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1313    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1314    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1315    o restore adjointability
1316    
1317    checkpoint53f_post
1318    o modifications that affect AIM experiment results (update output.txt):
1319      - no advection of S at top interface Nr (pkg/generic_advdiff)
1320      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1321    o AIM pkg:
1322      - include stability function into surf.Flux derivative relative to Tsurf
1323      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1324    
1325    checkpoint53e_post
1326    o merged cylindrical coord configuration
1327    o added rotating_tank experiment
1328    checkpoint53e_pre
1329    
1330    checkpoint53d_post
1331    o faulks upgraded: re-generate output.txt that have changed:
1332       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1333    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1334    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1335    o added Sadourny discretization of Coriolis
1336      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1337      - re-enabled use of omega3 (useAbsVorticity)
1338    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1339      vector-invariant equations
1340      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1341    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1342      hopefully without new bugs
1343      - still to do: biharmonic friction for non-hydrostatic w
1344    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1345    o regenerated output for global_ocean_ebm (using -ieee)
1346    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1347      of mom_common/
1348      - simple re-arrangement of instructions within computing loop
1349    checkpoint53d_pre
1350    
1351    checkpoint53c_post
1352    o new version of coupler for AIM+thSIce and Ocean models
1353     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1354     - land: change Evaporation of snow
1355     - aim with thSIce: fix bug in snow-precip.
1356    o changes to calc_gw.F
1357     - bug fix for w^2 term near the bottom boundary
1358     - (hopefully) improve the lateral slip boundary condtions for use with
1359        partial/looped cells
1360      - because the bug fix changes two verification experiments anyway (exp5
1361        and plume on slope), change the lateral boundary condition from half slip
1362        to the value of no_slip_sides
1363    o ebm package wasnt quite up to the parallel task. Fixed that.
1364    o Adjoint of EBM package + verification
1365      * TLM OK
1366      * ADM not sufficient accuracy yet (needs further testing)
1367    
1368    checkpoint53b_post
1369    o Commiting new energy balance model to repository
1370      * package is pkg/ebm
1371      * verif. is verification/global_ocean_ebm
1372      * references are in ebm_driver.F
1373    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1374    C        Global thermohaline circulation. Part I:
1375    C        Sensitivity to atmospheric moisture transport.
1376    C        J. Climate 12(1), 71-82
1377    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1378    C        Global thermohaline circulation. Part II:
1379    C        Sensitivity with interactive transport.
1380    C        J. Climate 12(1), 83-91
1381    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1382    C        Destabilization of the thermohaline circulation
1383    C        by atmospheric eddy transports.
1384    C        J. Climate 7(12), 1870-1882
1385    o Will need long integration testing.
1386    checkpoint53b_pre
1387    
1388    o created pkg/mom_common in preparation for variable viscosity code
1389    o renamed and split ini_mnc_io
1390    o pkg/land: only liquid water can diffuse or run-off
1391    o AIM using land: soil wetness availability account for snow
1392    o added printMapIncludesZeros to EEPARMS namelist
1393    
1394    checkpoint53a_post
1395    o restore TAMC compatiility for exf_constants.h
1396      (no usage of _d in .h)
1397    o Additional storing in KPP in an attempt to fix
1398      TAMC problem with adjoint of KPP code.
1399      (no success...)
1400      Identical code works fine with TAF.
1401    o Fixed verification/natl_box_adjoint experiments.
1402      Initial conditions for Experiments 4 and 5 are now
1403      set to "SEAICE_initialHEFF=0", which is more reasonable,
1404      and hence gives results closer to that of Experiment 2.
1405      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1406    
1407    checkpoint53
1408    o stable checkpoint with up to date adjoint
1409      TLM tests only run for 1st grdchk at the moment. Its unclear if
1410      this is a code problem or a problem with resetting code for g_
1411      variables that is being autogenerated wrong.
1412      Otherwise:
1413       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1414       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1415         are both still in chaos following their security messes.
1416    
1417    checkpoint52n_post
1418    o various build (mostly genmake2) changes including:
1419      - ability to build/run more easily within Cygwin and MacOS X
1420      - more complicated Makefiles with a stronger dependence on Gnu Make
1421    o pkg/seaice modifications
1422      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1423        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1424        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1425      - changed proxy for geostrophic velocity and updated
1426        verification/lab_sea/results/* accordingly
1427      - removed ADI dynamic solver from pkg/seaice
1428      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1429        they caused a segmentation fault under certain circumstances
1430      - removed unused field WATR
1431    o bug fix in exf-package:
1432      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1433         now reflect that.
1434    o small fixes in the cal-package:
1435      - set reference date to first of January for the 'model'-calendar
1436      - failing of cal_CheckDate in cal_FullDate now actually results in a
1437        warning
1438    o small modifications in exf-package to increase flexibility:
1439      - change climtempfreeze from a constant to a runtime parameter that
1440        is specified in data.exf_clim (default = -1.9)
1441      - introduce runtime parameter windstressmax (default = 2.0) that is
1442        specified in data.exf
1443    o fix in pkg/thsice:
1444      - update Evap (Tsf changes) to be consistent with Latent heat flux
1445      - maintain snow precipitation unchanged (even if Tsf >=0).
1446     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1447    
1448    checkpoint52m_post
1449    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1450      this does not change any of the results, because myIter=0 in swfrac always
1451      lead to jwtype=2 (the default anyway), but the call makes little sense
1452      as a default
1453    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1454    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1455      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1456    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1457    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1458    o extending useSingleCpuIO option to work with new exch2 I/O format
1459      - old-style, missing-tile I/O is still accessible by defining CPP
1460        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1461    o monitor package can write to NetCDF files and/or STDOUT
1462    o fix re-definition bug in MNC_GRID_INIT_ALL()
1463    o doc/api_reference added
1464      - a framework for building an API Reference Manual using all
1465        the "protex" comments embedded in the code
1466      - see pkg/generic_advdiff, pkg/mnc for examples
1467    o MNC:
1468      - make myThid the last argument for all subroutines
1469      - new default for the grid files: NO halos
1470      - add useMNC and other run-time flags
1471      - separate per-file-group handling of the unlimited dimension
1472      - early initialization of MNC w/ flags read at the eeboot stage
1473        and lookup tables set in initialize_fixed
1474      - write all MNC output to a freshly-created directory
1475    o thermodynamics sea-ice (thsice) is now tested with testreport.
1476    o test exp. advect_cs: use the standard cs32 grid ; update output.
1477    o Added functionality to grdchk:
1478      pick global i,j,k position (or nearest wet) where to perform check.
1479    
1480    checkpoint52l_post
1481    o new land formulation:
1482      a) use ground enthalpy as prognostic variable to ensure exact
1483         energy conservation.
1484      b) account for water temperature and for latent heat of freezing
1485         in all processes (rain, run-off, ground storage)
1486      c) compute surface and ground temperature implicitly.
1487    o aim_v23 modification for new land model:
1488      a) Treat separately land / ocean / sea-ice surface fluxes
1489         to allow implicit computation of land & sea-ice surface temp.
1490      b) add snow precipitation.
1491    checkpoint52l_pre
1492    
1493    o fix problem (when 1 tile is empty) in min/max monitor.
1494    o fix bug in timeAve (u,vZetatave in common block)
1495    o no restoring terms under ice for pkg/seaice
1496    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1497    o bug fix for pkg/seaice pickups
1498    o change MNC call locations and add coordinate attributes
1499    o mask vorticity at the corner ; affects global_ocean.cs output
1500    o fix ini_curvilinear_grid ; test CS experiments with mpi
1501    o aim.5l_cs: modify sea-ice fraction input file ; update output
1502    o exf: Adding simple range check routine for exf fields after read
1503    
1504    checkpoint52k_post
1505    o removed top-level directory "diags"
1506      - we migrated these functions to pkg/timeave a long time ago
1507    o fixed bug introduced in pkg/monitor
1508    o accuracy ctrlprec = 32 insuffient for gradient checks using
1509      averaged fields (I/O via cost_averages)
1510      -> use ctrl.h in active_file*.F to control I/O precision.
1511    o paramter list of CALL ADTHE_MAIN_LOOP
1512    o added initial do_the_model_io to ecco
1513    o set all ...Freq to zero after cost_final
1514      taveFreq, dumpFreq, pChkptFreq
1515    o MAIN and ECCO differentiability restored
1516    
1517    checkpoint52j_post
1518    o fix nchklev in tamc.h for global_ocean...
1519    o Bringing flow and store directives up-to-date
1520    o Really weird thing!
1521      call do_the_model_io from the_main_loop with parameters
1522      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1523      TAF places a faulty re-call of initialise_varia
1524      after cost_final call which should not be there!
1525    checkpoint52j_pre
1526    
1527    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1528      error messages
1529    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1530    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1531      debug output
1532    o modfied mdsio_writefield.F to handle non-global files under exch2
1533    o update AIM Cubed-Sphere exp (aim.5l_cs):
1534      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1535    o update AIM Equatorial Channel exp:
1536      use standard aim_v23 pkg and change the SST fields to be more realistic.
1537    o globalFile now works with exch2
1538    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1539      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1540    o limit timeave output for hi-res integrations
1541    
1542    checkpoint52i_post
1543    o removed CPP_EEOPTIONS.h from verification/*/code
1544    o updated the tiling for global_ocean_pressure
1545    checkpoint52i_pre
1546    
1547    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1548      the old pkg/aim).
1549    
1550    checkpoint52h_pre
1551    o shortened offending lines in exch2_send_rx?.template
1552    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1553    o genmake2: add build & execute test for NetCDF code
1554    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1555      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1556    o added useSingleCPUIO flag to monitor.F and mon_out.F
1557    o added temporary hack for sea-ice dynamics on the cube:
1558      metric terms are ignored and it is assumed that
1559      there is no sea-ice on cube faces 1, 2, 4, and 5.
1560    
1561    checkpoint52f_post
1562    o added exch2 cube routines to pkg/exch2
1563    o modified hs94.cs-32x32x5 to use it
1564    o added new grid files to hs94.cs-32x32x5
1565    checkpoint52f_pre
1566    
1567    checkpoint52e_post
1568    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1569      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1570    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1571      to work with implicit vertical advection and AB ;
1572    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1573    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1574     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1575    checkpoint52e_pre
1576    
1577    o fix bug in impldiff when Nr=1 or Nr=2.
1578    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1579    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1580    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1581      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1582    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1583    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1584    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1585    
1586    checkpoint52d_post
1587    o re-tiled many expts to allow comparison in multi-processor mode
1588      - updated output accordingly
1589      - changed hs94.128x64x5 to use intial T from file rather than use the
1590        random number generator
1591    o add infrastructure in model routines for fizhi and gridalt packages
1592    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1593    o changes to permit hi-res, cubed-sphere, configuration
1594      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1595      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1596      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1597        of surface winds for the cube
1598      (A verification experiment, based on global_ocean.cs32x15, but with
1599       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1600       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1601       complete with example surface forcing files and matlab scripts to look
1602       at the output and compare it with that of global_ocean.cs32x15.)
1603    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1604       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1605       to conform to the common rule.
1606    o check-in the first version of the coupler + interfaces for multi-components
1607       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1608       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1609       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1610       - ocean and atmos. share the same horizontal grid (no interpolation).
1611       - exchanges between component and coupler is done in forward_step
1612    o new verification experiment, cpl_aim+ocn:
1613       coupled ocean - AIM atmosphere on cs32 grid.
1614    
1615    checkpoint52d_pre
1616    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1617    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1618    
1619    checkpoint52c_post
1620    o Fixing OPTIONS files for use of exf:
1621      - ALLOW_ECCO not needed
1622      - ECCO_CPPOPTIONS.h should not be included from
1623        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1624        as has been the case in the past
1625      - All cal/exf related options are currently set in
1626        single header file. Should remain so until we
1627        agree on a consistent new policy.
1628    o Removed all CPP options for cal package.
1629      cal has no more CPP options.
1630    o modified STOREs in GAD_ADVECTION
1631    o corrected key comp. for passkey
1632    
1633    checkpoint52b_post
1634    o new version: "thsice" of thermodynamic sea-ice pkg:
1635     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1636     - modify fluxes but do not change theta directly;
1637     - light cleaning of bulk_force pkg (still needed with thsice).
1638     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1639       + output_thsice.txt to test thsice & bulk_force pkgs.
1640    o put back grid & coriolis monitor output.
1641    checkpoint52b_pre
1642    
1643    o call "do_the_model_io" at the beginning (=> dump initial state)
1644    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1645    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1646      (need info on NUMBER_OF_PTRACERS)
1647    o missing PTRACERS headers in some routines
1648    o default tamc.h in pkg/autodiff supposed to crash
1649      to ensure proper customization
1650    
1651    checkpoint52a_post
1652    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1653      - moved surfaceTendencyTice from pkg/seaice to main code
1654      - subroutine FREEZE_SURFACE now limits only surface temperature
1655        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1656        => new output.txt for global_ocean.cs32x15 & global_with_exf
1657      - keep the old version of FREEZE for backward compatibility;
1658        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1659      - corresponding modifs for TAF directives
1660    o added surface flux output variables to TIMEAVE_STATVARS
1661    o time-averaged output for pkg/ptracers
1662    o fix problem with ECCO-related divided adjoint
1663      snapshot file was missing some ad-variables,
1664      but no warning issued by TAF
1665    
1666    checkpoint52a_pre
1667    o some bug fixes for #undef REAL4_IS_SLOW
1668    
1669    checkpoint52 = ecco_c52_e35
1670    o after testing adjoints of checkpoint51u_post
1671    
1672    checkpoint51u_post
1673    o this is the post-merge tag of the ecco-branch
1674      (needs another clean checkout and re-testing)
1675    o various natl_box_adjoint configs and results
1676      but no input fields
1677    o obcs adjoint not yet merged!
1678    o adding ECCO global 1x1 and 2x2 degree configs
1679    o updated/extended some store directives for seaice
1680    o pkg/ecco now containes ecco-specific part of cost function
1681    o top level routines the_main_loop, forward_step
1682      supersede those in model/src/
1683      previous input data.cost now in data.ecco
1684      (new namelist ecco_cost_nml)
1685    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1686    
1687    checkpoint51t_post
1688    o this is the pre-merge tag of the ecco-branch
1689    
1690    checkpoint51s_post
1691    o cleanup: removed various obsolete #define-s
1692    o pkg/grdchk
1693      - renamed 'ph-grd 3' to 'grad-res'
1694      - merged from ecco-branch
1695        (remaining bug fixes for obcs gradient checks)
1696      - additional high-precision output for testreport
1697        (grep for 'precision_grdchk_result')
1698    
1699    checkpoint51r_post
1700    o cleaned up or removed CPP_OPTIONS.h files
1701    o updated results for some of the tests to reflect the new
1702      optfiles (-ieee: -O0 instead of -O3)
1703    
1704    checkpoint51q_post
1705    o cd_code:
1706      - moved cd_scheme.F -> cd_code_scheme.F
1707      - separate read_checkpoint from cd_code_ini_vars.F
1708      - separated cd_code part from write_checkpoint
1709      - updated AD_SOURCE, generated .flow
1710      - added CD_CODE_VARS.h to the_main_loop
1711      - Moving cd_code specific store dir.s to pkg/cd_code
1712    o ctrl package totally restructured
1713      - pack/unpack now optional and decoupled from
1714        xx_/adxx_ I/O
1715      - ctrl_pack/unpack cleaned
1716        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1717      - confined inclusion of AD_CONFIG.h to where necessary.
1718    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1719    
1720    checkpoint51p_post
1721    o create initial cd_code package
1722      - WARNING: the initialization of fields within packages
1723        is broken because INI_FIELDS (where READ_CHECKPOINT is
1724        called) is called *before* PACKAGES_INIT_VARIABLES.
1725        This seems to be backwards since
1726        1) its important to initially zero the entire field including
1727           the "halo" region
1728        2) zeroing needs to be done *before* reading pickup info
1729           and the pickup call might or might not happen in any
1730           particular run
1731      - this needs an overhaul for R2
1732    o cleanup verification/*/code/GMREDI_OPTIONS.h
1733    o cleanup testreport
1734    
1735    checkpoint51o_post
1736    o bringing AD-related verif's up to date with genmake2
1737      - carbon/
1738      - global_ocean.90x40x15/
1739      - hs.94.1x64x5/
1740      - (front_relax/ )
1741    o (more) consistent directory structure for AD-related verif.'s
1742    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1743    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1744    o bug fix in find_alpha.F for MDJWF:
1745      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1746        change rho -> rho-rhoConst
1747      - replace call find_rho to find_rhonum
1748    o initialisation of rFlx extended to full array (required by TAF)
1749      and shifted to thermodynamics
1750    o removed PTRACERS.h in ptracers routine
1751    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1752    o Correcting initialisations for fVerU, fVerV.
1753    o helping TAF to recognize dependency on kUp for
1754      fVerU, fVerV
1755    o Replacing delZ by delR in pkg/ctrl/
1756    checkpoint51o_pre
1757    
1758    o undid all of cp51 pending some cleanups and discussion
1759    o added the [#include "AD_CONFIG.h"] statement to all files that need
1760       it for adjoint/tl #defines
1761     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1762     o removed tools/genmake since it no longer works
1763    
1764    checkpoint51n_post
1765    o modifications to make FREEZE flux visible to pkg/kpp
1766      - moved surfaceTendencyTice from pkg/seaice to main code
1767      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1768      - subroutine FREEZE now limits only surface temperature
1769        (this means new output.txt for global_ocean.90x40x15,
1770         global_ocean.cs32x15, and global_with_exf)
1771    o added surface flux output variables to TIMEAVE_STATVARS
1772    
1773    checkpoint51n_pre
1774    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1775    o added [#include "AD_CONFIG.h"] to all files that use the following
1776      defines:
1777      - ALLOW_ADJOINT_RUN
1778      - ALLOW_TANGENTLINEAR_RUN
1779      - ALLOW_ECCO_OPTIMIZATION
1780    
1781    checkpoint51m_post
1782    o incorporating changes to get TAMC/TAF working in genmake2
1783      - added new TAMC/TAF targets to the Makefile
1784      - various cleanups related to package handling
1785      - these changes should have no impact on the forward model
1786    
1787    checkpoint51l_post
1788    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1789     - faster algorithm for cal_addtime.F
1790     - higher precision arithmetic, where needed
1791     - pkg/exf *startdate variables changed from calendar date to
1792       model integration time
1793    
1794    checkpoint51l_pre
1795    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1796    o enable to apply restoring on S & T only in a latitude band.
1797    o update output (external_forcing_surf modif. change truncation errors)
1798       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1799    
1800    checkpoint51k_post
1801    o change default to: useNHMTerms=.FALSE.
1802     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1803       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1804     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1805        exp1, ideal_2D_oce
1806     - change data file of oceanic exp (leave the results unchanged for now)
1807       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1808    o set gravitySign automatically according to the vertical coordinate used
1809      (and change sign: back to "logical" value: +1 when R increases downward)
1810    o added an include barrier to the default CPP_OPTIONS.h and
1811      removed the #include "PACKAGES_CONFIG.h" from it
1812    o fix a bug in mom_fluxform (from chk51j_post)
1813    
1814    checkpoint51j_post
1815    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1816    o adjusted some flow directives (dynamics, thermodynamics)
1817    o added cubed-sphere case to test cost function
1818    o heckpoint_lev?_directives.h now include
1819      pkg-specific directives, whenever those are enabled.
1820    o Moving pkg-specific flow directives to corresponding pkg
1821      Moving pkg-specific differentiation list to corresponding pkg
1822      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1823      ---> conventions are
1824           - pkg_ad.flow
1825           - pkg_ad_diff.list
1826           - pkg_ad_check_lev?_dir.h
1827    
1828    checkpoint51i_post
1829    o merge of the branch-genmake2
1830      - knowingly breaks the older genmake
1831      - automatic generation of all ALLOW_${PKG_NAME} defines
1832      - new testreport supersedes older testscript
1833    o large number of package inclusion and header cleanups
1834    checkpoint51i_pre
1835    
1836    o new output for adjoin of global ocean vector invariant
1837    o fix for checkpoint of thermodynamic seaice and bulk_force
1838    o Steph gchem various cleanups
1839    
1840    checkpoint 51h_pre
1841    o fixed some single quotes
1842    o modify gchem pkg to be more versatile
1843    o modifications to clean up dic pkg
1844    o add pkg/cfc
1845    
1846    checkpoint51g_post
1847    o provide links for ARPACK and ADM*TLM
1848    o start removing verification/vero/
1849    o update AD-related stuff
1850      (in particular some IF-statements in model/src/ routines)
1851    o adding to verification/global_ocean.90x40x15/ adjoint of
1852      vector invariant setup
1853    
1854    checkpoint51f_post
1855    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1856    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1857      of tracer Green's fucntions for ocean inversion project.
1858    
1859    checkpoint51f_pre
1860    o Added on-the-fly spatial interpolation capability
1861        "USE_EXF_INTERPOLATION" to pkg/exf.
1862      - This is a temporary Cartesian-grid hack until
1863        the super-duper ESMF coupler becomes available.
1864      - See verification/global_with_exf/README for usage example.
1865      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1866        flags and modified pkg/seaice accordingly.
1867    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1868        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1869        non-local transport term.
1870    
1871    checkpoint51e_post
1872    o pkg/mom_vecinv:
1873      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1874      - add time-ave diagnostic of vorticity advection.
1875    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1876    o atmospheric geopotential: - include water vapor effect;
1877                                - use p^kappa in p* scaling.
1878    o land pkg: read initial state from files.
1879    o AIM : add stratospheric drag in the upper level
1880    
1881    checkpoint51d_post
1882    o change function ILNBLNK (=> last non-blank char.) to return zero
1883      (instead of the string length) when the string. char is empty
1884    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1885    o modif's to restore TAMC compatibility
1886      - avoid "_d" constructs in PARAMETER declarations
1887      - avoid interrupting lines by comment lines
1888    o Use cluster local disks for purely local I/O
1889      vs. globally visible disks needed for ctrl stuff
1890      (merged from ecco-branch)
1891      - new active_file_loc... and mdsio_..._loc routines
1892      - affected packages: autodiff, ctrl, grdchk, mdsio
1893    
1894    checkpoint51c_post
1895    o introducing integer flag debugLevel
1896      - debLevZero: suppress all output
1897      - debLevA: standard
1898      - debLevB: equivalent to current debugMode=.TRUE.
1899    o introducing pathname variable mdsioLocalDir for mdsio
1900      that can be specified at runtime
1901      (relevant for cluster I/O to local disk)
1902    `
1903    >>>checkpoint51b_post
1904    adjoint of ptracers
1905    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1906    o extended state in checkpoint_lev?, etc.
1907    o alternative ctrl/cost with tr1 or ptracer
1908    o new comlev1_bibj_ptracers
1909    o new ptracers.flow
1910    o made ptracers_forcing same as external_forcing_s
1911    o added verification for adjoint with ptracers
1912      - adm. grdchk fail so far
1913      - tlm. grdchk OK
1914      - checked tapelev/comlev recomputations: OK
1915    <<<checkpoint51b_pre
1916    
1917    checkpoint51a_post
1918    o added code for biogeochemistry package
1919      - new pkgs: dic, gchem
1920      - new subroutine in ptracers
1921    o modify code for biogeo packages
1922      - in model/src and pkg/ptracers
1923    
1924    checkpoint51
1925    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1926      - autodiff, ctrl, exf, grdchk, seaice
1927      kept separate packages
1928      - cost, ecco, obcs
1929    o updating verification/internal_wave, verification/lab_sea
1930      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1931    
1932    checkpoint50i_post
1933    o Preparing next differentiable checkpoint and sync
1934      of MAIN vs. ecco-branch
1935      - 1st step: this one is differentiable
1936      - 2nd step: next(! not this) checkpoint will have updated packages
1937                  from ecco-branch)
1938    
1939    checkpoint50h_post
1940    o new package "land": provide surface BC for AIM.
1941    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1942    o AIM: use true log-P extrapolation for near surface temp (= as in
1943        F.Molteni paper) ; update aim.5l_cs output.
1944    o New variable in PARM03 for more flexible pickups
1945    o somewhat cleaned package initialisation sequence for
1946      ctrl/ cost/ ecco/ in packages_... routines
1947    
1948    checkpoint50g_post
1949    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1950      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1951      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1952        made the default because of faster convergence than ADI
1953    
1954    checkpoint50f_post
1955    o exf totally restructured
1956      - replaced all exf_set_ routines by one generic exf_set_gen.F
1957        and made sure it's still differentiable
1958      - split exf_getffields.F into new exf_bulkformulae.F
1959      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1960      - updated adjoint/makefile and relevant verif. accordingly
1961    
1962    checkpoint50f_pre
1963     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1964          + change Evap over land. (update aim.5l_cs output)
1965     o added missing .cvsignores and made uniform across expts
1966     o changed configuration of tidal_basin_2d expt
1967     o added pkg/debug functions for tracing code in fatal crashes
1968     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1969     o new fn in pkg/monitor to stop model if solution grows too big
1970     o removed lots of single quotes from comments
1971    
1972    checkpoint50e_post
1973    o make KPP work with PTRACERS
1974     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1975       nearly a copy of kpp_transport_s
1976     - there is no analogue to SurfaceTendencyS, so I have to use
1977       gPtr(of the surface layer) instead
1978    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1979    checkpoint50e_pre
1980    
1981    checkpoint50d_post
1982    o change kpp output from multiple-record state files to single-record state
1983      files analogous to write_state.F
1984    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1985      analogous to the cg2d-related output.
1986    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1987      so that writing to internal file fn (with length 512) fails.
1988    checkpoint50d_pre
1989    
1990    checkpoint50c_post
1991    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1992    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1993    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1994    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1995    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1996    
1997    checkpoint50c_pre
1998    Merging from release1_p13:
1999    o bug fix for pkg/seaice dynamic solver
2000    o Added SEAICE_initialHEFF to pkg/seaice
2001    
2002    checkpoint50b_post
2003    o store u*,v* in gU,V instead of in guNm1,gvNm1
2004    o in order to put the momForcing out of the Adams-Bashforth:
2005      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2006      to timestep.F
2007    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2008    o re-generate output for highly sensitive test-exp:
2009       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2010    
2011    checkpoint50b_pre
2012    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2013    o corrected CPP option mismatch in exf_Bulk... functions for case
2014      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2015    
2016    checkpoint50a_post
2017    o Bug fix for merging between c50 and KPP.
2018      ikey was passed from thermodynamics to kpp_calc via
2019      common block rather than being recomputed in kpp_calc,
2020      in contradiction with new key itdkey.
2021      New key ikppkey created, and tamc.h headers updated.
2022    
2023    checkpoint50
2024    - 2nd step of merge with ecco-branch:
2025      merge changes in ecco-branch back into main trunk
2026    - bug fix in find_alpha
2027    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2028    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2029    - merged some sliced AD support routines
2030    
2031    checkpoint49
2032    merged from ecco-branch:
2033    o exf:
2034      - Enable initialisation of forcing fields to constant
2035        (runtime) values.
2036      - in exf_getffields.F
2037        Reduce i-/j-loop to interior domain, discarding overlaps.
2038        That also fixes wrong TAF-key computations for key_1, key_2
2039        with bulf formulae.
2040      - exf_init.F modify #ifdef for exf_init_evap
2041      - exf_getffieldrec.F, ctrl_getrec.F
2042        The following INT-usages are not safe:
2043          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2044          fldcount = int(fldsecs/fldperiod) + 1
2045        and were modified.
2046    o autodiff: checkpoint_lev...
2047      - updated storing for bulk formulae (some arrays were missing)
2048      - added state for seaice package
2049      - synchronized with main branch
2050    o DIVA:
2051      Modif.s in
2052      - the_main_loop.F
2053      - the_model_main.F
2054      and added cost_final_restore.F cost_final_store.F
2055      o With these changes, it is possible to fully separate
2056        the first forward run to compute the cost function (mdthe_main_loop)
2057        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2058        into separate model executions.
2059        This enables better tuning of DIVA to given queue sizes.
2060      o Loss of cost function value in consecutive DIVA runs is
2061        fixed by storing to 'costfinal' file.
2062      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2063        beginning/end of adjoint integration is accounted for.
2064      The current changes apply to TAF-1.4.26.
2065      TAF has one remaining bug, requiring one manual change
2066      (see MITgcm manual).
2067    o cal: synchronized between MAIN and ecco-branch
2068    
2069    checkpoint48i_post
2070    o Changes to restore differentiability of code w.r.t. previous tag
2071      (mostly adding new routines to make list and replacing
2072      pressure by totPhiHyd).
2073    o Updated and merged grdchk package
2074      - has both ADM and TLM checks
2075      - works for single- and multi-proc.
2076      - output cleaned
2077      - worked successfully for parallel DIVA
2078    o genmake:
2079      - Adding -platform=SP4
2080      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2081    o Modif. for DIVA:
2082      ctrl_unpack should not be called in intermediate DIVA interval.
2083      (similar thing would apply for active files such as
2084      tbar, sbar, psbar, which should not be reinitialised;
2085      only relevant for ecco-branch)
2086    
2087    checkpoint48h_post
2088    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2089    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2090    o Added SEAICE_initialHEFF to pkg/seaice
2091    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2092    
2093    checkpoint48g_post
2094    --- EOS:
2095    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2096      store total Potential in totPhyHyd for diagnostics & EOS.
2097    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2098    --- Pressure/geopotential gradient:
2099    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2100    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2101      ( changes results of global_ocean_pressure )
2102    o NLFS + z-coord.: add eta*Rho' contribution.
2103    o accurate phiHyd when using interface-W at the middle between 2 centers
2104     ( changes results of ideal_2D_oce )
2105    o includes r* 2nd term in potential gradient.
2106    
2107    checkpoint48f_post
2108    Merging from release1_p12:
2109    o Modifications for using pkg/exf with pkg/seaice
2110      - improved description of the various forcing configurations
2111      - added basic radiation bulk formulae to pkg/exf
2112      - units/sign fix for evap computation in exf_getffields.F
2113      - updated verification/global_with_exf/results/output.txt
2114    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2115      (SBO) core products, including oceanic mass, center-of-mass,
2116      angular, and bottom pressure (see pkg/sbo/README.sbo).
2117    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2118      to avoid negative values in shallow regions.
2119      - updated verification/natl_box/results/output.txt
2120      - updated verification/lab_sea/results/output.txt
2121    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2122    o Added useSingleCpuIO option (see PARAMS.h).
2123    o Updated useSingleCpuIO option in mdsio_writefield.F to
2124      work with multi-field files, e.g., for single-file pickup.
2125    o pkg/seaice:
2126      - bug fix in growth.F: QNET for no shortwave case
2127      - added HeffFile for specifying initial sea-ice thickness
2128      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2129    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2130      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2131    o pkg/seaice:
2132      - adjoint-friendly modifications
2133      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2134    
2135    checkpoint48e_post
2136    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2137    o dynamics: change definition of computational domain & adapt mom_fluxform
2138      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2139    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2140        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2141        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2142        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2143        inverted_barometer solid-body.cs-32x32x1
2144      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2145    
2146    checkpoint48d_post
2147    o in preparation for r*:
2148     a) use pre-computed gradient of hydrostatic potential:
2149        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2150     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2151        => affects results of glob_oce_pressure (different truncation error)  
2152      update output.txt of ideal_2D_oce & global_ocean_pressure
2153    
2154    checkpoint48d_pre
2155    o in preparation for r*:
2156      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2157      pass the 2 comp. of the grad. as arguments to momentum S/R.
2158      but for the moment, only used if it does not change the results.
2159    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2160    
2161    checkpoint48c_post
2162    Modifications in treatment of initial flux forcing controls
2163    to avoid extra storing of flux fields.
2164    
2165    checkpoint48c_pre
2166    o Added tidal_basin_2d experiment (currently 1D!)
2167    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2168    
2169    checkpoint48b_post
2170    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2171     (modification to pressure gradient not yet implemented)
2172    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2173      (for U & V) that are used for vertical advection of momentum.
2174    
2175    checkpoint48a_post
2176    o In preparation for r*, use temp. array to compute vertical transport
2177       in flux-form momentum pkg. => change results of few test-exp.
2178      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2179                        lab_sea, natl_box & plume_on_slope
2180    
2181    checkpoint48
2182    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2183    
2184    checkpoint47j_post
2185    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2186    o moved adexch from forward_step to addummy_in_stepping
2187    o added exch in ctrl_map_...
2188    o aveFreq.=0. at end of cost_final to avoid overwrite in
2189      reverse checkpointing loop
2190    o Yet more changes in gmredi:
2191      * adgmredi_calc_tensor
2192        avoiding all recomputation of gmredi_slope_limit
2193      * adgmredi_x/y/rtransport
2194        added flag for excessive storing to avoid recomp. of
2195        u/v/rtans, dTdx/y/z
2196        -> this is not really necessary and very memory-consuming
2197      * adgmredi_slope_psi:
2198        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2199      * gmredi_slope_limit
2200        re-activated full calculation of taperfct for case 'ac02'
2201    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2202    
2203    checkpoint47i_post
2204    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2205    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2206      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2207    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2208    o gmredi: fix few bugs.
2209    
2210    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2211    This will be a good checkpoint to plug into the ecco-branch.
2212    o few modif.'s to get latest version adjointed
2213      (mainly kick out code in ini_linear_phisurf)
2214    o modif's to run adjoint with exactConserv
2215    o case GM_BOLUS_ADVEC should be cleaned
2216      S/R gmredi_slope_psi should be cleaned
2217    o verification/carbon now has exactConserv=.TRUE.
2218    
2219    checkpoint47g_post
2220    o time-average AIM output: becomes independent from statvars time-average
2221      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2222    o After TAF bug fix:
2223      Tested adjoint of gmredi package.
2224      Tests were done with checkpoint47 rather than with latest
2225      checkpoint47f_post since the latter is broken for the adjoint
2226      verification/carbon/ contains both ADM and TLM gradient checks.
2227    Here they are, before they get changed/lost/stolen.
2228    Mostly modif.'s to fix numerical sensitivities.
2229    Gradient checks OK for
2230    - GM_taper_scheme:
2231      * clipping
2232      * ac02
2233      * linear
2234      * glw91
2235      * dm95
2236      * ldd97
2237    - GMREDI_OPTIONS:
2238      * GM_VISBECK_VARIABLE_K
2239      * GM_NON_UNITY_DIAGONAL
2240      * GM_EXTRA_DIAGONAL
2241      * GM_BOLUS_ADVEC
2242    in conjunction with data.gmredi parameters to be checked in
2243    in a few minutes under verification/carbon/code/
2244    
2245    checkpoint47f_post
2246    Merging from release1_p10:
2247    o modifications for using pkg/exf with pkg/seaice
2248      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2249        and SEAICE_EXTERNAL_FLUXES
2250      - pkg/exf CPP options EXF_READ_EVAP and
2251        EXF_NO_BULK_COMPUTATIONS
2252      - usage examples are Experiments 8 and 9 in
2253        verification/lab_sea/README
2254      - verification/lab_sea default experiment now uses
2255        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2256    
2257    checkpoint47e_post
2258    o created a tag prior to creating a branch
2259    
2260    checkpoint47d_post
2261    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2262      at the bottom boundary had an erroneous half slip boundary condition
2263    o added bottom drag and no slip boundary condition capabilities to
2264      oceanic pressure coordinates code
2265    o added new verification experiment global_ocean_pressure, this experiment is
2266      also described in the tutorial section of the manual
2267    checkpoint47d_pre
2268    
2269    checkpoint47c_post
2270    o Added a verification experiment for a global cubed-sphere ocean run
2271      -  verification/global_ocean.cubed32x32x30
2272      -  uses pkg/therm_seaice and pkg/bulk_forcing
2273    
2274    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2275    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2276      when using P-coordinate; only implemented for atmospheric config.
2277    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2278      NOTES: requires option NONLIN_FRSURF to be "#define".
2279    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2280    
2281    checkpoint47b_post
2282    Merging from release1_p9:
2283    o pkg/seaice
2284      - removed GOTO's and added taf directives
2285      - double precision constants to reduce the g77 (Linux)
2286        to F77 (SGI) differences reported in release1_p8
2287    o tools/genmake
2288      - added SGI options
2289    o verification/testscript
2290      - updated to that of checkpoint47a_post
2291    o verification/global_ocean.90x40x15/input/eedata
2292      - modified for SGI f77 compatibility
2293    o verification/lab_sea
2294      - added description of sea-ice model
2295      - added missing matlab routines
2296      - added test of thermodynamics parallelization
2297    
2298    checkpoint47a_post
2299    o new pkg: aim_v23
2300     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2301       for now, keep the same surface forcing as before.
2302     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2303     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2304     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2305    o add diagnostic of surface correction term in monitor output
2306    
2307    o bulk_force and therm_seaice
2308    - Two packages:  bulk_force (Bulk forcing)
2309      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2310    - Earlier integration from Stephaine Dutkiewicz
2311      and Patrick Heimbach.
2312    - Two ifdef statements for compile time,
2313       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2314    
2315    checkpoint47
2316    differentiable version of checkpoint46n_post
2317    o bug fix in quasihydrostaticterms
2318    o * "clean" adjoint code (in terms of extensive recomputations)
2319        can now be obtained for all GMREDI options (i.e. for
2320        - GM_VISBECK_VARIABLE_K
2321        - GM_NON_UNITY_DIAGONAL
2322        - GM_EXTRA_DIAGONAL
2323        - GM_BOLUS_ADVEC )
2324      * However, wrong gradient check problem remains unsolved.
2325      * New CPP options have been introduced for different
2326        tapering schemes
2327    o external_fields_load now part of differentiation list
2328    o pressure needs multiple storing;
2329      would be nice to have store_pressure at beginning or
2330      end of forward_step, e.g. by having phiHyd global (5-dim.)
2331      (NB: pressure is needed for certain cases in find_rho,
2332      which is also invoked through convective_adjustment).
2333    o recomputations in find_rho for cases
2334     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2335    o #define ATMOSPHERIC_LOADING should be differentiable
2336    o ini_forcing shifted to begining of initialise_varia
2337    o Incorporating QNVS line search routines into MITgcm
2338      (this is separate code, and therefore not under pkg)
2339      lsopt/, optim/
2340    o Updated verification/carbon/
2341      - #define GM_VISBECK_VARIABLE_K
2342      - GM_taper_scheme    = 'ldd97'    
2343    
2344    checkpoint46n_post
2345    Merging from release1_p8:
2346    o verification/natl_box:
2347      updating new external_fields_load routine
2348    o New package: pkg/seaice
2349      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2350      The sea-ice code is based on Hibler (1979-1980).
2351      Two sea-ice dynamic solvers, ADI and LSR, are included.
2352      In addition to computing prognostic sea-ice variables and diagnosing
2353      the forcing/external data fields that drive the ocean model,
2354      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2355      The implied surface heat flux is then stored in variable
2356      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2357      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2358      non-local transport term.  Because this call precedes model
2359      thermodynamics, temperature under sea-ice may not be "exactly" at
2360      the freezing point by the time theta is dumped or time-averaged.
2361      N.B.: fairly large differences in accuracy occur across
2362            different platforms/compilers; comparison between
2363            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2364            generated output gives:
2365       T           S           U           V
2366      C D M    c        m  s        m  s        m  s        m  s
2367      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2368      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2369      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2370    
2371      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2372    o GAD:
2373      - generated new common blocks to account for call of
2374        same gad routines with differing traceridentities
2375        (needed to modify tracerIdentity indices in GAD.h)
2376      - generated separate common blocks for case useCubedSphereExchange
2377        (Department of Futurology)
2378      - parameter lists to gmredi_?transport: added tracerIdentity
2379      - added new key indices to tamc.h
2380    o external_fields_load:
2381      - added this routine to TAF list
2382      - needed to make some common blocks global and additional storing
2383        along the same lines as exf package (checkpoint_lev?_directives.h)
2384    o exf:
2385      updated external forcing package
2386      - bug fixes carried over from ecco-branch
2387        (missing OBCS_OPTIONS.h in two routines)
2388      - enable easy to use "no forcing".
2389      - added exf I/O for atmospheric loading
2390      - added exf I/O for runoff data
2391      - transfered scaling between exf <-> MITgcm to exf namelist
2392    o Adding new verification experiment global_with_exf.
2393      This verification experiment is almost identical to the
2394      global_ocean.90x40x15 experiment, except that it uses
2395      the exf (and cal) package instead of the
2396      external_fields_load routine (cf README file).
2397    
2398    checkpoint46m_post
2399    o modified testscript to return -- when there are no lines of "%MON" output
2400    o added new flag "quasiHydrostatic" for QH mode
2401      and new routine quasihydrostaticterms()
2402    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2403      New routine: mom_u_coriolis_nh()
2404    o fixed sign of non-hydrostatic metric terms in u and v equations.
2405      Depend on correct sign of gravitySign.
2406    o added work.pc* to .cvsignore in aim directories using ifc
2407    o introduced flag for controllin non-hydrostatic metric terms
2408  o removed gravitySign from PARM04  o removed gravitySign from PARM04
2409  o switched to g77/ifc from pgf77 in aim experiments  o switched to g77/ifc from pgf77 in aim experiments
2410    

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