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revision 1.75 by jmc, Thu Jun 20 23:52:03 2002 UTC revision 1.697 by heimbach, Wed Jul 12 00:01:53 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    checkpoint58l_post
8    o take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
9    o commit code to make SST/SSS weights spatially variable
10      (based on either variable in-situ or variable initial T/S weights)
11    o pkg/ecco:
12      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
13        now based on horizontally varying weights wthetaLev, wsaltLev
14      * cost_averagesflags now returns year indices in addition to day, month
15      * sflux balance is performed on annual basis
16        (sflxumm, sfluxmm2, bal_sfluxmm)
17      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
18        including separate counting and multipliers
19    o pkg/rbcs
20      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
21    
22    checkpoint58k_post
23    o testreport:
24     - always build in dir. "build" (if not there, mkdir build instead of building
25       & running in input)
26     - run in dir run (if it exists), in build otherwise.
27     - call prepare_run (if input/prepare_run exists)
28     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
29    o pkg/exf modifications to interpolation and rotation routines for more
30       reasonable treatment of North Pole singularity: for tracers North Pole
31       value is set to northernmost zonal-mean value, for zonal velocity it is
32       set to zero, and for meridional velocity it is set to northernmost value.
33    o pkg/exf/exf_check_range.F
34     - add tile index to diagnostics and move stop statement to the very
35       end of the routine.
36    o pkg/diagnostics: (diagnostics_main_init.F)
37      define title of isomorphic variables according to the current config.
38    o pkg/thsice with pkg/seaice dynamics:
39    - fix domain of computation (interior only, required for exf) and do exchanges
40    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
41    o towards a standard way of dealing with multi-threading in MONITOR
42      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
43    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
44       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
45    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
46    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
47    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
48       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
49    o tracer advection:
50     - clean-up and simplify calc_common_factors.F
51     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
52       advection subroutine (but still not used within DST advection S/R)
53    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
54    
55    checkpoint58j_post
56    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
57      from file (collects calls previously in FORWARD_STEP)
58    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
59    o adjoint store dir. adjusted accordingly
60    o genmake2
61      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
62    
63    checkpoint58i_post
64    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
65      on wind stress (SEAICEstressFactor defaults to 1.)
66    o Total number of Timers is finite (<=40): comment out 2 non-essential one
67      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
68    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
69      on CS-grid: no longer loosing mass.
70    o exf & curvilinear-grid: no longer modify longitude xC & xG.
71    o pkg/ggl90: fix sloppy output and fix a bug
72    o pkg/seaice: added SEAICEuseEVPpickup parameter
73      - Set to false in order to start EVP solver with
74        non-EVP pickup files when using SEAICEuseEVP
75      - fix sign error in diffusion in seaice_calc_rhs
76    
77    checkpoint58h_post
78    * Modifications for bottom topography control
79      o replace hFacC by _hFacC at various places
80      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
81      o add non-self-adjoint cg2d_nsa
82      o update autodiff support routines
83      o re-initialise hfac after ctrl_depth_ini
84      o works for 5x5 box, doesnt work for global_ocean.90x40x15
85    * Adding verification for 5x5 box (4-layer) bottom topography control
86    
87    checkpoint58g_post
88    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
89       used for mean seasonal cycle, mean diurnal cycle); add an example
90       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
91    o pkg/ggl90:
92      - add parameter (minimum surface kinetic energy)
93      - fix bug (avoiding division by zero)
94    o couple pkg/thsice to pkg/seaice:
95      - modify advection in seaice to accomodate new scalar fields to be advected
96      - only muliDimAdection scheme work with seaice/thsice
97      - mapping of thsice-variables to seaice-variables, back and forth
98      - does not break the verification experiments, but does not give the
99        desired results either
100    o pkg/seaice
101      - make (default) second order advection a bit less confusing?
102    
103    checkpoint58f_post
104    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
105      to pkg/seaice):
106      - new routines thsice_map_exf and thsice_get_exf provide the interface
107      - add an additional formal parameter to thsice_solve4temp
108    o pkg/exf:
109      - add new fields wspeed, snowprecip (to be able to couple to thsice)
110      - correct Stefan-Boltzmann constant
111      - new parameter for longwave surface emittance
112      - separate some stuff from exf_bulkformulae into new routines  
113        exf_radiation, exf_wind
114      - add new parameters and constants: longwave emissivity for ocean, ice
115        and snow, evaporation parameters over ice
116      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
117        either wind from stress or stress from wind
118    o pkg/thSIce:
119    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
120    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
121       and THSICE_CALC_THICKN
122    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
123    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
124      to make debugging easier.
125    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
126    o pkg/bulk_force:
127      - clean-up comments and parameters ;
128      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
129    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
130      generate new output for test-experiment: aim.5l_cs.thSI
131    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
132      testreport accordingly
133    
134    checkpoint58e_post
135    o SEAICE_CGRID adjoint done
136    o R_STAR adjoint implemented.
137      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
138      * need to sort out init. of h0facc, etc.
139    o Make pkg/profile fully independent of ecco,cost, etc. stuff
140      to be able to use it in pure forward.
141    
142    checkpoint58d_post
143    o upgrade simple test-experiment to tutorial example:
144     step.1: duplicate the experiment and (step.2) will remove the old copy.
145      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
146      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
147      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
148      tutorial_global_oce_biogeo    <- copy of dic_example
149      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
150      tutorial_plume_on_slope       <- copy of plume_on_slope
151      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
152      tutorial_global_oce_optim     <- empty for now (David ?)
153      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
154     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
155    o correct a sign problem in cost_scat.F
156    o obcs and ptracers: fix boundary conditions for advections schemes
157      with larger stencil
158    o thsice adjoint: start
159    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
160      completeness
161    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
162      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
163    o ptracers adjoint:
164      * avoid extensive recomputatations
165      * fix missing re-init. of gptr (missed by TAF)
166    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
167      me to turn off the excessive output to STDOUT that this package produces
168    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
169      and add those terms in Vector-Invariant formulation.
170    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
171      if the control period (xx_hfluxperiod etc) is 0
172    o in profiles pkg, clean routines and fix details
173    o in ecco pkg, reading ssh data:
174      fix problem in case the model does not start at iter0=0
175    o fix mnc-pickup/restart for ptracers
176    o new package prifiles:
177      code to compute profile-based cost by Gael Forget
178      (modifs in ecco, ctrl, autodiff)
179    o Benign bug fix in initialization (spotted by M. Mazloff) of
180      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
181    
182    checkpoint58c_post
183    o adjoint: finish NLFS adjoint and provide reference output in
184      verification/global_ocean.90x40x15/results_ad_nlfs
185    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
186      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
187      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
188      with SEAICE_CGRID defined.
189    o move calendarDumps from "data" to "data.cal" and clean-up the code
190      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
191    o add useEXF & useCAL flags (for now, set in hard-coded way)
192    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
193      (were missing in NH mode, and wrong in quasihydrostatic mode).
194      waiting for Chris updated version of calc_gw to add those CALLs.
195    o fix bug in quasihydrostatic S/R ;
196      add a test for this option: global_ocean.90x40x15.qshyd
197    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
198      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
199    o add on/off flag useOffLine for package OFFLINE
200    o seaice:
201      - modify advection so that it works also on the C-grid
202      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
203        problem in multi-tile runs with C-grid
204      - add flags for clipping ice velocities and/or masking solver forcing
205      - fix drag (ocean on ice) formulation and a bug that caused noise in the
206        C-grid solver
207      - added a few comments to seaice_diffusion.F
208      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
209        are now exclusive)
210      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
211        required re-ordering the code a little:
212       + make DAIRN global variable (defined in SEAICE)
213       + move computation of the viscosities eta and zeta into a new separate
214         routine (because I need to recompute them in seaice_ocean_stress.F)
215    
216    checkpoint58b_post
217    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
218      update output.txt of exp. aim.5l_cs.thSI
219    o various mnc cleanups and improvements:
220      + shrink lookup tables by factor of ~4
221      + better error reporting when running out of lookup space
222      + able to handle longer path/file names (up to 500 chars)
223    o adjoint:
224      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
225      - TBD: "hidden" mom_vecinv recomp. in dynamics
226    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
227     (allow to differentiate between forcing components using new integer flags:
228      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
229     and add new flag to put Dissipation tendency out of Adams-Bashforth.
230    o ecco
231      - enable trend removal from SSH anomaly obs.
232    o adjoint
233      - a fix for PmEpR when #undef EXACT_CONSERV
234      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
235      - try to fix "hidden" recomp. in forward_step for NLFS
236        (NLFS seems broken sometimes after I checked it in)
237    o seaice:
238     - add c-grid version of the dynamic solver:
239       + three new routines that are the c-grid substitute lsr, dynsolver
240         and ostres
241       + put a few fields that were local to dynsolver into global common
242         blocks, so that I can move the computation of stresses etc into
243         seaice_lsr (saves coding but may break the adjoint).
244     - replace more hardwired parameters by runtime parameters
245     - add ice masks that mask the rhs of the implicit solvers where there
246       is no ice (commented out in seaice_dynsolver, because i am not sure
247       if this works properly), eventually this should replace the clipping
248       of ice velocities in seaice_dynsolver to +/-40cm/s.
249    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
250      include it only where its needed
251    o move balancing of fluxes before the call of external_forcing_surf
252    o seaice:
253      - correct units of turning angles (now they are really in degrees)
254      - move computation of GWATX/Y out of main routine into dynsolver
255      - initialize GWATX/Y in seaice_init
256    o Apply mask on Fresh-Water flux (needed for SSH forcing).
257      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
258    o seaice: add runtime flags for turning angles (default to zero)
259    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
260      and trend from exf forcing and ctrl control adjustments
261    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
262      (since checkpoint57x_post)
263    o change the default rotation period to 86164.s = the Earth rotation
264    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
265      and based on a reference stratification. Tested within hs94.cs-32x32x5.
266    o seaice advection: add code for choosing between the default (2nd order
267      central differences) and multiDim advection schemes provided by
268      pkg/generic_advdiff
269    o seaice:
270      - removed all references to SEAICE_GRID.h fields from
271        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
272        (cubed-sphere configuration will change a little)
273      - grid computations in seaice_init are obsolete now.
274      - cleaned up code a little so that is easier to read (hopefully).
275      - added new (better?) discretizations of default advection and diffusion
276        (turn on with SEAICEuseFluxForm)
277      - replace 1 in 3d global fields by kSurface in growth.F
278      
279    checkpoint58a_post
280    o seaice:
281      - bug fix in advect.F
282    o shelfice:
283      - separate shelfice load anomaly from pload (breaks with time
284        dependent forcing), => introduce constant field shelficeLoadAnomaly.
285        Its default is 0., but it may be computed more cleverly from (unknown)
286        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
287        done offline. A good approximation of the pressure load anomaly is
288        necessary to avoid large initial adjustment processes underneath
289        deep-reaching shelfice.
290      - small fix in ISOMIP shelfice_thermodynamics
291      - add more sophisticated thermodynamics of Hellmer (1989), this is
292        now the default
293      - give a few constants more intuitive names
294    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
295      if bulk formulae are used in long integration (especially EmPmR). Turn
296      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
297      if balancePrintMean, the imbalance that is substracted is printed to
298      STDOUT.
299    o fix bug (typo) in obcs_apply_eta.F
300    o add a new package shelfice which enables us to model the circulation
301      underneath shelf-ice with draughts of hundreds of meters.
302     - works
303     - to do: + include improved thermodynamics
304              + check whether kSurfC (from model/inc/SURFACE.h) can be used
305                instead of new field kTopC
306              + can we use topoFile, Ro_surf and existing code in ini_depth.F
307                instead of new field R_shelfIce and new code in ini_depth.F
308                and ini_mask_etc.F?
309              + adjust vertical mixing schemes?
310    o seaice pkg:
311     - add a cpp-flag to include a simple formula for a salinity dependent
312       freezing point of sea water at the surface
313     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
314       meridional stresses are now different (and hopefully correct)
315    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
316       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
317       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
318    o pkg/diagnostics: add options and parameters for regional-statistics
319       diagnostics ; define regions by reading a region-mask from a file
320       (might add other options later)
321    o pkg/bulk_force:
322     - add option and parameters to use AIM surface-flux formulae.
323     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
324       others forcing fields (defined in PARM05, parameter file "data") are loaded
325       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
326     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
327     - use the right EXCH call for uwind,vwind (to work on CS-grid).
328     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
329       and parameters (note: calcWindStress replaces .NOT.readwindstress).
330     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
331    
332    checkpoint58
333    o add "--embed-source" option to genmake2 which, when the supporting
334      tools can be compiled (as determined by genmake2) will turn on the
335      embed_files package which then embeds the entire MITgcm source code
336      (*.[fFhc] + Makefile) used for the build within the executable
337      - requested by CNH but off by default
338      - adds a paltry <9MB to the mitgcmuv executable in most cases
339      - only writes the output when useEMBEDSRC in eedata is true
340    o clean up 3-dim. relaxation codes:
341      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
342      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
343      * Thanks to Tom Haine for testing!
344    
345    checkpoint57z_post
346    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
347      affects output (@ truncation level) of exp. plume_on_slope ; updated.
348    o fix the pickup behavior for obcs in combination with ptracers
349    o fix a bug in ptracers_external_fields_load
350    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
351      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
352    o transfered surface NH pressure to eta field (if exactConserv).
353    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
354         and update lab_sea output.txt file.
355    o completing 3-dim. relaxation code: additional term
356         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
357      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
358      * At compile time, in "EXF_OPTIONS.h" set
359          #define  ALLOW_CLIMTEMP_RELAXATION
360          #define  ALLOW_CLIMSALT_RELAXATION
361      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
362          tauThetaClimRelax3Dim = 15552000.0,
363          tauSaltClimRelax3Dim  = 15552000.0,
364      * 3 cases:
365          1) Use a constant-in-time 3-dim. field
366          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
367          3) Real-time relax. to time-evolving prescribed field
368    o Adding Laplacian-type smoothness constraint on
369      initial and boundary (forcing) controls (ic, bc)
370      * enable at compile-time via
371        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
372      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
373      * Absolute scale somewhat unclear so far
374      * no area weighting was included since no other cost term does so far
375    
376    checkpoint57y_post
377    First step for a NLFS adjoint
378    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
379    o new init. routines for calc_r_star, calc_surf_dr
380    o still need to deal with ini_masks_etc
381    o testreport seemed happy
382    checkpoint57y_pre
383    
384    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
385    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
386    o add new offset feature to offline pkg (plus minor cleanup)
387    o cfc fixes for final year of integration
388    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
389      be in GCHEM_OPTIONS).
390    
391    checkpoint57x_post
392    o fix testreport Pb in multiple test experiment.
393    o cleanup our namelist syntax in verification:
394      - make it more F95 standards compliant (some work still needed)
395      - allows the vast majority of our tests to work with gfortran
396    o Non-Hydrostatic:
397     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
398     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
399    o Allow to apply AB on T,S rather than on AB(gT,gS):
400     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
401     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
402       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
403     - need a "clever" read_pickup to restart from the other AB formulation
404    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
405    o remove some unused variables (reduces number of compiler warnings)
406    o adjoint
407      * Disable useVariableViscosity for adjoint for time being
408        (there are a number of extensive recomputations)
409      * Initialize certain variables needed for adjoint
410    
411    checkpoint57w_post
412    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
413                 fix the singleCpuIO RS version of MDSWRITEFIELD
414       and add a WARNING if using globalFiles=T with multi-processors.
415    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
416      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
417    o tracer advection scheme:
418      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
419       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
420       was not very convenient).
421      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
422       (further tests needed for the implicit DST & Flux-Limiter schemes).
423    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
424      and sRef for convenience, handy, when you want to initialize
425      ptracers in a large domain with a constant non-zero value. Also,
426      untangle ptracers_init.F a little.
427    
428    checkpoint57v_post
429    o change dome exp. to use variable viscosity in side-drag terms.
430    o remove all the files from the cfc_offline test since they are now
431      incorporated into tutorial_cfc_offline which has been producing
432      identical results for a few days of testing
433    o add new parameter: sideDragFactor to enable half-slip-side BC
434      and change side-drag S/R to use viscosity from mom_calc_visc
435      (can switch back by setting sideDragFactor=0.); affects results at
436      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
437       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
438    o vorticity & strain are now computed without masking, to account for
439      no-slip-side BC in variable viscosity calculation ; mask is applied
440      anyway later on, before computing advection/coriolis terms.
441    o modify exp4 to test new obcs support for reading from external files
442      and for passive tracers
443    o fix behavior of ptracers_monitor when monitor output is written to a
444      netcdf-file; still not independent of monitor.F (writes in the same
445      file).
446    o change default value of tRef (put a uniform, meaningful value for ocean
447      & atmos) and initialize sRef (was missing, as Martin mentioned).
448    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
449      to be proportional to enstrophy dissipation length.  Thus,
450       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
451      This is now consistent with Smagorinsky and with the manual.
452    
453    checkpoint57u_post
454    o OBCS and PTRACERS: add open boundary support for passive tracers
455      - either use homogenous (pseudo) v.Neumann conditions or prescribe
456        OB-values from file; this is not different from the way theta and salinity
457        are treated
458      - however, Orlanski-radiation conditions are not supported, and the model
459        will stop if you use pTracers and Orlanski at the same time.
460      - beefed up the rountine obcs_external_fields_load: now only those open
461        boundary values are overwritten with values from files for which there
462        are really files, otherwise the OB-fields remain untouched. This makes
463        it possible to use different OBs at different ends of the domain (as
464        with EXF)
465    o reduce number of exch calls in shap_filt (s2).
466    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
467      truncation level) 4/5 MLAdjust test results (11&12 digits match).
468    
469    checkpoint57t_post
470    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
471    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
472      same truncation, independent of the face number: affects affects several
473      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
474    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
475      note that biharmonic viscosity + no-slip was not tested in any experiment.
476    o fix bug in non-linear free-surf side-drag ; generate new output for
477      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
478    o make mnc honor the writeBinaryPrec flag for most kinds of output
479    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
480    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
481      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
482    o add brackets in multi-terms sum to get same truncation, independent of
483      the face number (manage to get exactly same value of gU,gV at the cs-edge)
484      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
485    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
486      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
487      a maximum grid-scale Reynolds number.  Also, changes all length calculations
488      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
489      Suggested values of viscosity parameters found in mom_calc_visc.
490      Many new viscosity diagnostics available.
491    
492    checkpoint57s_post
493    o Add clearing-house for viscosity calculations, mom_calc_visc and
494      correct numerous bugs in LeithD and Smagorinsky discretizations.  
495      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
496      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
497      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
498      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
499      The Strain-Tension form is now called with useStrainTensonVisc=.true.
500      ViscAhStrain and viscAhTension are now retired.
501    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
502    o In response to JMC's bug report, genmake2 now ignores any soft-links
503      that it finds in the *current* directory when searching for files.
504      Soft-links found in any other source directories will still work as
505      they did before.
506    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
507      a C routine to unlimit the stack size
508    o mnc-ify pkg/aim snapshot vars
509    o mnc-ify pkg/land as requested by Daniel
510    o various changes to mnc including:
511      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
512      - output can now be grouped so that all files within a group
513          change the ITER portion of their names in lock-step together
514      - can now read ("global") PER-FACE (in addition to PER-TILE) files
515          and works with both EXCH1 and EXCH2 (but needs more testing)
516      - writing works for all verification test cases w/ g77 on Linux
517    
518    checkpoint57r_post
519    o make MNC variable initialization happen earlier
520    o add diagnostics for (almost) each term of the momentum Eq.
521    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
522    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
523    o remove MINIMAL_TAVE_OUTPUT option ;
524      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
525    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
526      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
527    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
528    o add time-dependent SST, SSS control
529    o cost terms in ecco/ modularized (new cost_generic.F)
530    o cost_averages routines are modularized (new cost_averagesgeneric.F)
531    o new infrastructure for seaice model vs. obs misfits in seaice/
532      * driver from the_main_loop.F is seaice_cost_driver.F
533      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
534      * gradient check in Exp. 6a of natl_box_adjoint/
535    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
536      (see README file)
537    
538    checkpoint57q_post
539    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
540    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
541      - bug was reported by Jean-Michel and Ian Fenty
542    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
543      update exp. cpl_aim+ocn output.
544    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
545      Needed for high-res. runs with large global files
546      to be able to limit tapelev size
547    o Changed some tests for adjoint:
548      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
549      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
550      * global_ocean.90x40x15/ back to default 3-level checkpointing
551    o Modifications to enable scripted COMMON to MODULE conversion
552      * verification/OpenAD/code/ has necessary scripts and description;
553      * converts, compiles and runs successfully;
554    
555    checkpoint57p_post
556    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
557    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
558      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
559    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
560    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
561      (was already the case for dissipation with mom_vecinv,
562       and also the case for grad.PhiHyd when staggered-timeStep)
563      This will allow to put dissipation out-off the AB time-stepping.
564     Unfortunately, affects truncation error. Update output of exp. that "fails"
565      (cg2d matching number) and leave the others for later: front_relax(10),
566      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
567      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
568    
569    checkpoint57o_post
570    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
571      (2) its ready to be documented during the 20050801 DocFest
572    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
573      for ideal_2D_oce and lab_sea on linux_ia32_g77
574    o set to #undef CTRL_SET_OLD_MAXCVARS_30
575      in global1x1_tot/code_seaice_adj to access indices 32, 33
576      (worth another tag)
577    
578    checkpoint57n_post
579    o adding precip control xx_precip 32
580    o adding swflux control xx_swflux 33
581    o Replacing 10 forcing penalty cost routines by 1 generic.
582    o Implementing partitioning in time-mean and variable adjustment
583      for atmos. state.
584    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
585    o in natl_box_adjoint:
586      * updated exp 1 to 10
587        (but does not have time-mean vs. variable split results yet)
588    o updated global1x1/*_seaice_adj/
589      to incorporate latest changes
590    o enable useSingleCpuIO for mdsio vector routines
591      (applies in particular to tapelev I/O)
592    o removed inefficient K-loop in all active_file*control*.F
593    
594    checkpoint57m_post
595    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
596      and advect_cs (use EXCH-2 and standard cs-32 grid files).
597    o pkg/exch2: filling of face-corner halo regions is optional
598      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
599    
600    checkpoint57l_post
601     tag before updating tutorials (pre-release-2)
602    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
603       for output and interpolation of input fields onto model grid)
604    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
605       Affects results of exp. rotating_tank ; update output.txt.
606    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
607          and taking the square quantity and/or using a fraction-weight field.
608    o fix aim_diagnostics_init.F mate numbers.
609    o add mnc output capability to diagnostics/diagstat and update
610      our cvsignore files for the ACSII output generated
611    
612    checkpoint57k_post
613    o lab_sea now uses diagnostics package and provides a suite of
614      new EXF diagnostics output.
615    
616    checkpoint57j_post
617    o exf
618      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
619        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
620        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
621      * extended diagnostics output
622        - now includes all EXF variables
623        - hs, hl moved to common block
624        - separate S/R for diagnostics, called after ctrl vector is added
625        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
626        - EXFqnet contains true Qnet (i.e. includes qsw)
627      * updated verif. lab_sea, global_with_exf
628      * Rearranging hflux (exf_mapfields -> exf_getforcing)
629        to ensure that diagnostics sees a true EXFqnet
630    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
631    o diagnostics pkg: change pointers so that 1 diagnostic can be used
632      several times with different frequencies.
633    o mnc-ify the thsice package as requested by Daniel Enderton
634      - the monitor--MNC output needs work
635      - many attributes need to be added (most are currently blank)
636    o mnc-ify theaim_v23 package as requested by Daniel Enderton
637      - many attributes need to be added (most are currently blank)
638    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
639    o add Sadourny like discretization to the 4th.O vorticity advection scheme
640    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
641      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
642         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
643    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
644     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
645    
646    checkpoint57i_post
647    o Diagnostics package was changed: diagnostic allocation is now deactivated
648      by setting an empty file name in the namelist (used to be by setting 0 frequency)
649    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
650      add 1rst Order upwind vertical Shear.
651    o add a quick fix for A/B checkpointing in OFFLINE mode
652    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
653      end-run around the C/Fortran linking horror in eesup/src/timers.F
654    o added pkg/runclock: allows user to terminate run based on wall clock
655    o added non-hydrostatic scaling parameter: nh_am2
656    o pkg/my82: futile attempt to make results compiler-independent by adding
657      some "_d 0", etc. no effect.
658    o for mnc output, fill the 'T' coordinate var with myTime and create a
659      separate 'iter' variable for iteration count
660    o pkg/diagnostics:
661      add new capability: output of Global/Regional & per-level statistics ;
662      tested against monitor output (including land & thSIce) on various exp.
663    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
664    
665    checkpoint57h_done
666      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
667      data.diagnostics, data.gchem, data.ptracers) is done.
668    
669    o pkg/diagnostics: prepare for Global/Regional statistics.
670      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
671    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
672      and rename it: DIFFERENT_MULTIPLE
673    
674    checkpoint57h_post
675    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
676    o pkg/diagnostics: change output frequency, now in seconds (instead
677      of Nb of iterations). This requires to change data.diagnostics.
678    checkpoint57h_pre
679    
680    o in mnc, let the user create the output dir if both mnc_outdir_date
681      and mnc_outdir_num are false
682    o add fflags() to pkg/diagnostics which allows one to specify, on a
683      per-file basis, the file precision [default behavior is unchanged]
684    o added diagnostics to pkg/kpp, including computation of mixed layer
685      depth based on a temperature/density criterion
686    o updated verification/natl_box to test the new pkg/kpp diagnostics
687    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
688    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
689    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
690      not mnc -- this mistake was found by JMC and is now corrected
691    
692    checkpoint57g_post
693    o add Adams-Bashforth 3rd Order time stepping:
694      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
695      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
696    checkpoint57g_pre
697    
698    o make lambda[Theta,Salt]ClimRelax spatially varying
699      (default remains spatially uniform constant based on tau)
700    o added new control variables
701      * init. uVel, vVel, etanN
702      * lambda[Theta,Salt]ClimRelax
703    o separate masks used for ctrl_pack/unpack 'from write_grid' output
704      (suggested by G. Forget)
705    
706    checkpoint57f_post
707    o add parameter "baseTime" = model base time = time at iteration zero
708      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
709      account for baseTime shift
710    o move Coriolis arrays from PARAMS.h to GRID.h
711    checkpoint57f_pre
712    
713    o mnc-ifying the seaice package
714    o introduced an alternative length scale calculation for use in the limiting
715      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
716    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
717    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
718      as well as grad(vort3).  Made it compatible with both approximate form
719      for the cubed sphere and full form of these gradients.  Added flag
720      useFullLeith to select between approximate and full form.  
721    o add "d0" in getcon.F to reduce differences between compilers/platforms
722      update output.txt of exp. fizhi-gridalt-hs
723    o change port_rand funtion to allow to set the seed.
724    o fix obscure MNC bug involving conversion between reals and integers
725      - it caused no problems with certain (eg. gcc, ifc) compilers but the
726        new version is now more standards-compliant
727    o adjoint-related modifications
728      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
729      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
730      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
731    
732    checkpoint57e_post
733    o Adding eddy stress controls a la Ferreira et al.
734    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
735    
736    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
737      update output.txt of exp. fizhi-gridalt-hs
738    o add more "Z" dimensions and associated coordinate vars to MNC
739    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
740    o parameter calendarDumps: when set, approximate months (30-31 days) and years
741      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
742      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
743      months and years.  Requires pkg/cal.
744    o diagnostics: add pickup functionality
745      - off by default for backwards compatibility
746      - current version only uses MDSIO -- MNC will be added
747    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
748    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
749    
750    checkpoint57d_post
751    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
752    o modify verification/ideal_2D_oce so that it tests the creation of mnc
753      output from the diagnostics package
754    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
755    o make genmake2 more portable by using ".$FS" instead of ".f" for more
756      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
757    o add coordinate variables to the MNC output from the diagnostics package
758    o change MNC-flags default value: true when useMNC=TRUE
759    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
760      the ability (off by default) to read the grid information using MNC
761    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
762    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
763    o do snap-shot diagnostics at the middle of the time-interval (instead of
764      at the end).
765    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
766      new test for AIM with thSIce + slab-ocean
767    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
768    o move state variable diagnostics to the beginning of the time step ;
769      (note: still needs some work specially for snap-shot diagnostics)
770      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
771    
772    checkpoint57c_post
773    o Change testing option (-ieee) to get closer agreement between g77 & ifort
774    o generate new output.txt files on faulks with g77 & the new -ieee option
775    checkpoint57c_pre
776    
777    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
778      update output.txt of exp. global_ocean.90x40x15
779    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
780      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
781    o add saltFlux(+File) forcing capability with periodicExternalForcing
782    o allow to use pkg diagnostics for GM-Redi & ThSIce output
783    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
784    o improvements for the MNC output from DIAGNOSTICS:
785      - correct handling of the unlimitied dimension
786      - all dims now have associated coordinate variables
787      - variables located at U, V, and Corner ("Z") points are now written
788        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
789        *all* data points are output
790    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
791    o added pkg/seaice/seaice_monitor.F
792    o mdsio_readfield.F can now read files visible only to master MPI process.
793    o pkg/seaice: some test code for ice-modified ocean stress
794    o exf_getffields interpolation defaults to bilinear for all scalar forcing
795      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
796      spurious negative numbers for precipitation and humidity.  Will cause
797      some small numerical differences for integrations using pkg/exf/exf_interp.F.
798    o pkg/ctrl/
799      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
800        May be enabled via doPackDiag
801      *  introduce z-scaling of
802         + gradient (doZscalePack) and
803         + control (doZscaleUnpack)
804    o pkg/mdsio/
805      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
806      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
807    
808    checkpoint57b_post
809    o simplify options in diagnostics_fill arguments (remove weird combinations)
810    o fix MNC coordinate variables so that they now contain per-face index
811      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
812      general, EXCH2 grids are only aligned to a "local" coordinate system
813    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
814    o Implement instantaneous output within pkg diagnostics:
815      setting a negative frequency in data.diagnostics produces
816     "snap-shot" output (as opposed to time-average if freq > 0)
817    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
818      NOTE: change ptracer diagnostics name: use 2 characters to work with
819            more than 9 tracers. Add also diagnostics of advect & diffus flux.
820    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
821      becomes the coordinate variable for the 'T' dimension
822    o add CF-style coordinate variables to MNC
823      - just a first cut:  numbers are meaningless on the cubesphere and
824        missing along the T axis but otherwise it works!
825    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
826    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
827    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
828      this is based directly on what the model compute, so that the content of
829      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
830    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
831    o clean up build options files for SunOS, in particular
832      - remove -traditional from xmakedepend
833      - change -xarch=v9 to -xarch=native for f77
834      - restore use of make (not gmake)
835      - add CC=gcc if using g77
836    o changes per discussion of AM, JMC, & EH3 today:
837      - move redundant "grid" variables out of "state" -- in preparation of
838        creating proper CF-style coordinate variables and in recognition
839        that any/all grid variables can be easily copied (eg. w/NCO) from
840        the grid files into any of the other NetCDF files
841      - *always* output grid variables with MDSIO (this will eventually be
842        changed)
843      - output MNC grid file if useMNC is true
844    o every instance of _END_MASTER() has been found and replaced with
845      _END_MASTER( myThid ) in order to satisfy certain picky Sun
846      preprocessors
847    o re-arrange diagnostics pkg initialisation:
848     - allow each package to extend the available diagnostics list
849     - add some checking and fix small problems (multi-threaded, ...)
850     - new S/R diagnostics_fill (replace fill_diagnostics):
851       look through the short list of active diag. (instead of the long list)
852       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
853    
854    checkpoint57a_post
855    o this set of changes restores TAMC compatibility
856      tested for global_ocean.90x40x15 adjoint on trough
857      (what a pain)
858    
859    checkpoint57a_pre
860    o some modifs in tools/build_options for sunos
861    o call ctrl_pack for ctrl at end for optimcycle=0
862    
863    checkpoint57
864    o add horizontal bi-harmonic viscosity for vertical velocity
865      - new parameter viscA4W (defaults to viscA4)
866      - affects only non-hydrostatic code
867      - to be done: no-slip lateral boundary conditions
868    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
869    o implement Implicit Vertical advection for pTracers
870    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
871      (implemented also for implicit vertical diffusion & advection)
872    o OBCS: extend application of tracer open boundary conditions
873      to a strip beyond the boundary of width Olx/Oly
874    o add call monitor to TAF set of required calls (flow directives)
875      and include in natl_box_adjoint
876    o untangle a few ifdefs related to cost, ctrl, autodiff
877      untangel a few ALLOW_ECCO_OPTIMIZATION
878    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
879      (theta2, salt2 in ecco_cost_weights)
880    
881    checkpoint56c_post
882    o OBCS as control variables
883      - update ctrl_ad_diff.list, obcs_ad_diff.list
884      - remove balance of obcs controls from default
885      - fix index bug nobcs in ctrl_init
886      - fix dummy fields filen in ctrl_pack
887      - add dummy weights for obcs
888    o lsopt: comment out fort.94 output
889    o optim:
890      - remove unnecessary header files
891      - adjusted namelists
892      - add xerbla.F to Makefile
893    o exf:
894      - multiple modifications of exf_check_range
895      - unit change in exf_init_runoff from [m/year] to [m/s]
896    o mdsio:
897      - i/o-vector change debugLevel from debLevA to debLevB
898    
899    checkpoint56b_post
900    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
901      is called from DO_THE_MODEL_IO
902      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
903      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
904      - clean up PTRACERS_WRITE_TIMEAVE a little
905    o add another verification experiment that tests both the cfc-pkg and
906      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
907      reactive tendencies treated inline with regular timestepping
908    o testreport previously did a lousy job of comparing small numbers, so
909      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
910      implemented in the little c-progam tmp_cmpnum.c which is embedded in
911      testreport.
912    o ptracers_monitor: bug fix for MPI
913    
914    checkpoint56a_post
915    o GCHEM: finish reorganizating the package
916      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
917        (introduces another 3D-array for each passive tracer, but only if
918        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
919        gchemTendency is not needed because the timestep is done separately)
920      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
921      - GCHEM is now---more or less cleanly---separate from PTRACERS
922      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
923        so clear to me how that should be done in a general way.
924    o CFC: improve formatting of output in CFC_ATMOS
925    o PTRACERS:
926      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
927        that ALL experiments with ptracers enable can be checked. This makes
928        GCHEM_MONITOR obsolete.
929      - include a runtime parameter PTRACERS_monitorFreq that defaults to
930        monitorFreq
931      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
932    o add PTRACERS (PTR0[1-5]) to testreport output
933    o exf_check_range:
934      * default changed to .TRUE.
935      * will check values for niter0 if debLevA, every timestep if debLevB
936      * STOP in exf_check_range if 'out of range'
937      * range chosen generous to allow for potential extema
938      TBD: a version with stricter range
939           permitted range would be runtime parameters
940    o GMredi:
941      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
942      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
943      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
944    o GCHEM:
945      - move call to GCHEM_FORCING_SEP, so that it is now called before
946        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
947      - introduced a useGCHEM runtime flag and applied it everywhere.
948      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
949        this flag is now only visible within GCHEM-pkg routines.
950      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
951        be replaced by a 3D array that is computed before thermodynamics; for
952        this, the tracer ID iTracer had to be included into the parameter list
953        of ptracers_forcing
954      - set up forward_step to call gchem_forcing, that will replace
955        gchem_forcing_int in ptracers_forcing
956      - cleaning up
957    o small cleaning of exch2: remove files that are also in eesupp/src
958    
959    checkpoint56
960    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
961    o mnc: cleanup "full" files--fixes out-of-memory problem
962    o ECCO-GODAE
963      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
964      * fully merged and updated from SIO code
965        windstress sign change affects
966        - exf_inscal_[u/v]stress
967        - sign of xx_tau[u/v] adjustments
968        - signs in cost_scat
969      * ctrl_get_gen: avoid update of tau[u/v] for first few days
970      * natl_box_adjoint updated and compressed
971      * 2-level checkpoint switch added
972        (tested in EXP. 1 of natl_box_adjoint)
973      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
974    o SVD
975      * first complete, non-hacked version for SVD calculations
976      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
977        performed via direct access files admtlm_vector.it????
978        (via ctrl_[un]pack)
979      * optimcycle is used for ARPACK iteration counter
980        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
981      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
982        and add linear transforms where necessary
983      * controls are initial/final SST, SSS (can be extended; need to check
984        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
985    o mdsio: filename info to both stderr, stdout
986    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
987      from sign change
988    
989    checkpoint55j_post
990    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
991      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
992    o add consistent build directories and .cvsignore files to verification
993    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
994    o make all subroutines 30 or less characters in length for certain older
995      compilers to work (a thorough search only turns up two routines in
996      pkg/ptracers)
997    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
998      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
999    
1000    checkpoint55i_post
1001    o change arrays for total vertical diffusivity (2.D if explicit,
1002      3.D if implicit) ; each ptracer uses its own background value.
1003    o added mnc/NetCDF output capability to ocn_compon_interf
1004      - added bits to verification/cpl_aim+ocn so that it can run on
1005        ITRDA and other clusters without the mpirun "-wd" option
1006    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1007      configuration
1008    o give MNC the ability to create additional files rather than
1009      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1010      - the default is just less than 2GB which is a practical limit
1011        on many systems
1012    o Compute the non-local term using either KPP vertical diffusivity (=default)
1013       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1014    
1015    checkpoint55h_post
1016    o add verification test "vermix"
1017    o remove all the *_ioinc flags and replace with the single global
1018      outputTypesInclusive flag
1019    o allow to set a vertical profile of vertical diffusivity for T & S
1020    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1021    o useMNC moved from data.mnc to data.pkg
1022    
1023    checkpoint55g_post
1024    o Renaming carbon AD experiments to comply with testreport conventions
1025    o Updating adjoint of Held-Suarez hs94.1x64x5
1026    o Fixing directives for non-ECCO forward_step, after ECCO directives
1027      have been fixed to avoid recomp. of do_oceanic_phys
1028      Works well for global_ocean.90x40x15,
1029      but recomp. issue remains for carbon
1030    o Updating adjoint output for natl_box_adjoint after
1031      pkg/ecco has been modified (see taga c55d_post)
1032    
1033    checkpoint55f_post
1034    o rename to timeave_init_fixed
1035    
1036    checkpoint55e_post
1037    o some delicate re-shuffle of store directives to avoid one
1038      extra call of do_oceanic_physics
1039      affects ecco_the_main_loop.F, do_oceanic_physics.F
1040      checkpoint_lev1_directives.h
1041    o NB: this may break global_ocean adjoint temporarily,
1042      but it is clear how to fix it. Will do later, need this now.
1043    
1044    checkpoint55d_post
1045    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1046    o ecco_cost_weights is modified to 1x1 runs
1047    o modifs to allow observations to be read in as
1048      single file or yearly files
1049    o enable to read exf forcing fields as either
1050      single file or yearly files (flag useExfYearlyFields)
1051    checkpoint55d_pre
1052    
1053    o switch between 2-level and 3-level checkpointing
1054    o add ability of MNC to write local and "partial" (eg. 2D slices where
1055      the full 3D field is never actually stored) arrays to NetCDF files
1056      with the correct (that is, the complete multi-dimensional) set of
1057      array indicies
1058      - used in mom_vecinv() to write the diagFreq output
1059      - tested (demonstrated) in verification/aim.5l_cs
1060    o further mnc-ification
1061      - add verification/lab_sea to the list with mnc setups
1062      - fix undefined mnc v-names in cd_code
1063      - add kpp to mnc output (both snapshot and timeave)
1064    o non-hydrostatic code
1065      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1066        in calc_gw.F
1067      - defaults to viscAh
1068      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1069        friction or Leith) in non-hydrostatic mode, as long as there is
1070        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1071    o pkg/cost
1072      extend simple cost functions to treat time mean quantities
1073      (T,U,V) via cost_accumulate_state from cost_tile
1074    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1075        be 2 times larger than the minimum size the advection scheme requires.
1076        now get a perfect conservation of salt in advect_cs test-exp (updated)
1077    o GGL90 (Gaspar's TKE mixed layer)
1078      - add horizontal diffusion of TKE, requires exchanges in
1079        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1080        default. In OPA there is no horizontal diffusion of TKE but the
1081        mixing coefficients are computed from a horizontal average of TKE of
1082        6 points or so. I think that diffusion has a little more physical
1083        justification.
1084      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1085        was in vain)
1086      - mask tke-variable in ggl90_init
1087    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1088    o fix biharmonic diffusion on CS-grid.
1089    o more obcs stuff
1090      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1091        for reading boundary values. This routine is called from
1092        obcs_prescribe_read
1093      - updated obcs_check
1094      - changed sponge layer relaxation parameter units for days to seconds
1095      - turned off sponge layer by default
1096      - changed argument list of OBCS_CALC to myTime+deltaTclock
1097      - fixed about 35 bugs in obcs_external_fields_load
1098    
1099    checkpoint55c_post
1100    o obcs stuff
1101      - new runtime flags useOBCSprescribe, useOBCSbalance
1102      - re-arranged obcs_calc
1103      - moved exf_getobcs to obcs_prescibe_read
1104        obcs_prescibe_read is called after ORLANSKI stuff
1105        and independent of it (executable can contain all).
1106      - updated obcs_check
1107      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1108        These may be necessary only if tangential velocities are
1109        prescribed at OB, not sure, needs testing.
1110    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1111      which simplifies the calls and passes the ifc check-bounds test
1112    
1113    checkpoint55b_post
1114    o add a 2D scalar, Z location, exchange_2 routine.
1115    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1116      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1117      affects advect_cs results (for the wrong reason): update output.txt
1118    o use a more standard discretization for biharmonic viscosity ;
1119     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1120      affects results of dome set-up: update output.txt
1121    o fix gad_advection.F (CubedSphere part), back to version 1.23
1122    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1123    
1124    checkpoint55a_post
1125    o merged code to
1126      * prescribe/read time-dependent open boundaries
1127        (works in conjunction with exf, cal)
1128      * sponge layer code for open boundaries
1129      * each boundary N/S/E/W now has its own CPP option
1130        (healthy for the adjoint)
1131    
1132    checkpoint55
1133    o up-to-date adjoint of previous breaks
1134      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1135      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1136      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1137      - carbon: * remove tr1-related adjoint verification
1138                * add ptracer as control variable
1139    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1140      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1141    
1142    checkpoint54f_post
1143    o in verification/carbin/ remove experiment related to
1144      ALLOW_PASSIVE_TRACER (array tr1 etc)
1145      code_ad/ input_ad/ results_ad
1146    
1147    o add two new packages
1148      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1149        + subject to optimization (memory)
1150      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1151        + subject to reordering (many GOTOs in the original code)
1152        + so far opps is called for every (i,j) point, and then operates in
1153          the vertical; one may want to reorder the scheme in order operate in
1154          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1155          fields)
1156    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1157      - all verification tests compile and run with linux_ia32_g77
1158      - defaults are compatible with current input files--nothing
1159        should change if you were not previously using MNC
1160      - MNC output has been added in numerous places (eg. timeave)
1161        but there are still a few writes not yet do-able with MNC
1162        (this is in progress)
1163      - flags now allow for either/or/both use of MDSIO and MNC and
1164        documentation will soon follow
1165      - numerous small formatting cleanups for ProTeX
1166    o add version info (via BUILD_INFO.h) to MNC and stdout
1167    
1168    checkpoint54e_post
1169    o add two new packages
1170      - pp81 (Packanowski and Philander, 1981), Richardson number and
1171        stratification dependent mixing
1172      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1173      - these scheme operate in a similar manner as KPP (without ghat, of
1174        course), however there is only one diffusivity that is used for both
1175        temperature and salinity (and passive tracers)ç
1176    o add offline package
1177    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1178      provided by Stephanie Dutkiewicz
1179    o genmake2: add ability to search for C compilers and cleanup test output
1180      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1181    
1182    checkpoint54d_post
1183    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1184    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1185      leading to additional shift by 5 days each year of integration
1186       (i.e. leading to considerable offset over the years)
1187    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1188    o start with no AB and no initial filtering (staggerTimeStep):
1189      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1190    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1191      (external loading & cpl import/export stay in forward_step.F)
1192    o update coupling interface to work with new staggerTimeStep
1193    o change MDSIO ptracers_pickup.
1194    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1195    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1196    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1197    
1198    checkpoint54c_post
1199    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1200      this affects (truncation error) output.txt of test-exp:
1201       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1202    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1203    o change Qnet to always be the net heat flux, (+upward).
1204      affects (truncation error) output of natl_box exp.: updated
1205    o define the max number of passive tracers in PTRACERS_SIZE.h
1206    o start to test mnc routinely in exp0
1207    o add sea-ice loading (sIceLoad) as a new forcing field.
1208    
1209    checkpoint54b_post
1210    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1211       impressive on Altix and Opteron systems)
1212    o diagnostics can now write NetCDF files through the mnc package
1213    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1214    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1215    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1216      affects (truncation error) output of lab_sea & natl_box exp.: updated
1217    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1218    
1219    checkpoint54a_post
1220    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1221    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1222    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1223    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1224      + internal_wave (shift in writing cg2d_ini_res)
1225    checkpoint54a_pre
1226    
1227    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1228      - modified verification/lab_sea and natl_box_adjoint accordingly
1229    
1230    checkpoint54
1231    checkpoint53g_post
1232    o prepare splitting of thermodynamics: store convect.counter in common block
1233    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1234      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1235    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1236    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1237    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1238    o restore adjointability
1239    
1240    checkpoint53f_post
1241    o modifications that affect AIM experiment results (update output.txt):
1242      - no advection of S at top interface Nr (pkg/generic_advdiff)
1243      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1244    o AIM pkg:
1245      - include stability function into surf.Flux derivative relative to Tsurf
1246      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1247    
1248    checkpoint53e_post
1249    o merged cylindrical coord configuration
1250    o added rotating_tank experiment
1251    checkpoint53e_pre
1252    
1253    checkpoint53d_post
1254    o faulks upgraded: re-generate output.txt that have changed:
1255       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1256    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1257    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1258    o added Sadourny discretization of Coriolis
1259      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1260      - re-enabled use of omega3 (useAbsVorticity)
1261    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1262      vector-invariant equations
1263      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1264    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1265      hopefully without new bugs
1266      - still to do: biharmonic friction for non-hydrostatic w
1267    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1268    o regenerated output for global_ocean_ebm (using -ieee)
1269    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1270      of mom_common/
1271      - simple re-arrangement of instructions within computing loop
1272    checkpoint53d_pre
1273    
1274    checkpoint53c_post
1275    o new version of coupler for AIM+thSIce and Ocean models
1276     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1277     - land: change Evaporation of snow
1278     - aim with thSIce: fix bug in snow-precip.
1279    o changes to calc_gw.F
1280     - bug fix for w^2 term near the bottom boundary
1281     - (hopefully) improve the lateral slip boundary condtions for use with
1282        partial/looped cells
1283      - because the bug fix changes two verification experiments anyway (exp5
1284        and plume on slope), change the lateral boundary condition from half slip
1285        to the value of no_slip_sides
1286    o ebm package wasnt quite up to the parallel task. Fixed that.
1287    o Adjoint of EBM package + verification
1288      * TLM OK
1289      * ADM not sufficient accuracy yet (needs further testing)
1290    
1291    checkpoint53b_post
1292    o Commiting new energy balance model to repository
1293      * package is pkg/ebm
1294      * verif. is verification/global_ocean_ebm
1295      * references are in ebm_driver.F
1296    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1297    C        Global thermohaline circulation. Part I:
1298    C        Sensitivity to atmospheric moisture transport.
1299    C        J. Climate 12(1), 71-82
1300    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1301    C        Global thermohaline circulation. Part II:
1302    C        Sensitivity with interactive transport.
1303    C        J. Climate 12(1), 83-91
1304    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1305    C        Destabilization of the thermohaline circulation
1306    C        by atmospheric eddy transports.
1307    C        J. Climate 7(12), 1870-1882
1308    o Will need long integration testing.
1309    checkpoint53b_pre
1310    
1311    o created pkg/mom_common in preparation for variable viscosity code
1312    o renamed and split ini_mnc_io
1313    o pkg/land: only liquid water can diffuse or run-off
1314    o AIM using land: soil wetness availability account for snow
1315    o added printMapIncludesZeros to EEPARMS namelist
1316    
1317    checkpoint53a_post
1318    o restore TAMC compatiility for exf_constants.h
1319      (no usage of _d in .h)
1320    o Additional storing in KPP in an attempt to fix
1321      TAMC problem with adjoint of KPP code.
1322      (no success...)
1323      Identical code works fine with TAF.
1324    o Fixed verification/natl_box_adjoint experiments.
1325      Initial conditions for Experiments 4 and 5 are now
1326      set to "SEAICE_initialHEFF=0", which is more reasonable,
1327      and hence gives results closer to that of Experiment 2.
1328      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1329    
1330    checkpoint53
1331    o stable checkpoint with up to date adjoint
1332      TLM tests only run for 1st grdchk at the moment. Its unclear if
1333      this is a code problem or a problem with resetting code for g_
1334      variables that is being autogenerated wrong.
1335      Otherwise:
1336       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1337       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1338         are both still in chaos following their security messes.
1339    
1340    checkpoint52n_post
1341    o various build (mostly genmake2) changes including:
1342      - ability to build/run more easily within Cygwin and MacOS X
1343      - more complicated Makefiles with a stronger dependence on Gnu Make
1344    o pkg/seaice modifications
1345      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1346        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1347        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1348      - changed proxy for geostrophic velocity and updated
1349        verification/lab_sea/results/* accordingly
1350      - removed ADI dynamic solver from pkg/seaice
1351      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1352        they caused a segmentation fault under certain circumstances
1353      - removed unused field WATR
1354    o bug fix in exf-package:
1355      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1356         now reflect that.
1357    o small fixes in the cal-package:
1358      - set reference date to first of January for the 'model'-calendar
1359      - failing of cal_CheckDate in cal_FullDate now actually results in a
1360        warning
1361    o small modifications in exf-package to increase flexibility:
1362      - change climtempfreeze from a constant to a runtime parameter that
1363        is specified in data.exf_clim (default = -1.9)
1364      - introduce runtime parameter windstressmax (default = 2.0) that is
1365        specified in data.exf
1366    o fix in pkg/thsice:
1367      - update Evap (Tsf changes) to be consistent with Latent heat flux
1368      - maintain snow precipitation unchanged (even if Tsf >=0).
1369     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1370    
1371    checkpoint52m_post
1372    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1373      this does not change any of the results, because myIter=0 in swfrac always
1374      lead to jwtype=2 (the default anyway), but the call makes little sense
1375      as a default
1376    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1377    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1378      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1379    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1380    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1381    o extending useSingleCpuIO option to work with new exch2 I/O format
1382      - old-style, missing-tile I/O is still accessible by defining CPP
1383        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1384    o monitor package can write to NetCDF files and/or STDOUT
1385    o fix re-definition bug in MNC_GRID_INIT_ALL()
1386    o doc/api_reference added
1387      - a framework for building an API Reference Manual using all
1388        the "protex" comments embedded in the code
1389      - see pkg/generic_advdiff, pkg/mnc for examples
1390    o MNC:
1391      - make myThid the last argument for all subroutines
1392      - new default for the grid files: NO halos
1393      - add useMNC and other run-time flags
1394      - separate per-file-group handling of the unlimited dimension
1395      - early initialization of MNC w/ flags read at the eeboot stage
1396        and lookup tables set in initialize_fixed
1397      - write all MNC output to a freshly-created directory
1398    o thermodynamics sea-ice (thsice) is now tested with testreport.
1399    o test exp. advect_cs: use the standard cs32 grid ; update output.
1400    o Added functionality to grdchk:
1401      pick global i,j,k position (or nearest wet) where to perform check.
1402    
1403    checkpoint52l_post
1404    o new land formulation:
1405      a) use ground enthalpy as prognostic variable to ensure exact
1406         energy conservation.
1407      b) account for water temperature and for latent heat of freezing
1408         in all processes (rain, run-off, ground storage)
1409      c) compute surface and ground temperature implicitly.
1410    o aim_v23 modification for new land model:
1411      a) Treat separately land / ocean / sea-ice surface fluxes
1412         to allow implicit computation of land & sea-ice surface temp.
1413      b) add snow precipitation.
1414    checkpoint52l_pre
1415    
1416    o fix problem (when 1 tile is empty) in min/max monitor.
1417    o fix bug in timeAve (u,vZetatave in common block)
1418    o no restoring terms under ice for pkg/seaice
1419    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1420    o bug fix for pkg/seaice pickups
1421    o change MNC call locations and add coordinate attributes
1422    o mask vorticity at the corner ; affects global_ocean.cs output
1423    o fix ini_curvilinear_grid ; test CS experiments with mpi
1424    o aim.5l_cs: modify sea-ice fraction input file ; update output
1425    o exf: Adding simple range check routine for exf fields after read
1426    
1427    checkpoint52k_post
1428    o removed top-level directory "diags"
1429      - we migrated these functions to pkg/timeave a long time ago
1430    o fixed bug introduced in pkg/monitor
1431    o accuracy ctrlprec = 32 insuffient for gradient checks using
1432      averaged fields (I/O via cost_averages)
1433      -> use ctrl.h in active_file*.F to control I/O precision.
1434    o paramter list of CALL ADTHE_MAIN_LOOP
1435    o added initial do_the_model_io to ecco
1436    o set all ...Freq to zero after cost_final
1437      taveFreq, dumpFreq, pChkptFreq
1438    o MAIN and ECCO differentiability restored
1439    
1440    checkpoint52j_post
1441    o fix nchklev in tamc.h for global_ocean...
1442    o Bringing flow and store directives up-to-date
1443    o Really weird thing!
1444      call do_the_model_io from the_main_loop with parameters
1445      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1446      TAF places a faulty re-call of initialise_varia
1447      after cost_final call which should not be there!
1448    checkpoint52j_pre
1449    
1450    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1451      error messages
1452    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1453    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1454      debug output
1455    o modfied mdsio_writefield.F to handle non-global files under exch2
1456    o update AIM Cubed-Sphere exp (aim.5l_cs):
1457      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1458    o update AIM Equatorial Channel exp:
1459      use standard aim_v23 pkg and change the SST fields to be more realistic.
1460    o globalFile now works with exch2
1461    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1462      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1463    o limit timeave output for hi-res integrations
1464    
1465    checkpoint52i_post
1466    o removed CPP_EEOPTIONS.h from verification/*/code
1467    o updated the tiling for global_ocean_pressure
1468    checkpoint52i_pre
1469    
1470    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1471      the old pkg/aim).
1472    
1473    checkpoint52h_pre
1474    o shortened offending lines in exch2_send_rx?.template
1475    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1476    o genmake2: add build & execute test for NetCDF code
1477    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1478      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1479    o added useSingleCPUIO flag to monitor.F and mon_out.F
1480    o added temporary hack for sea-ice dynamics on the cube:
1481      metric terms are ignored and it is assumed that
1482      there is no sea-ice on cube faces 1, 2, 4, and 5.
1483    
1484    checkpoint52f_post
1485    o added exch2 cube routines to pkg/exch2
1486    o modified hs94.cs-32x32x5 to use it
1487    o added new grid files to hs94.cs-32x32x5
1488    checkpoint52f_pre
1489    
1490    checkpoint52e_post
1491    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1492      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1493    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1494      to work with implicit vertical advection and AB ;
1495    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1496    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1497     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1498    checkpoint52e_pre
1499    
1500    o fix bug in impldiff when Nr=1 or Nr=2.
1501    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1502    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1503    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1504      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1505    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1506    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1507    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1508    
1509    checkpoint52d_post
1510    o re-tiled many expts to allow comparison in multi-processor mode
1511      - updated output accordingly
1512      - changed hs94.128x64x5 to use intial T from file rather than use the
1513        random number generator
1514    o add infrastructure in model routines for fizhi and gridalt packages
1515    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1516    o changes to permit hi-res, cubed-sphere, configuration
1517      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1518      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1519      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1520        of surface winds for the cube
1521      (A verification experiment, based on global_ocean.cs32x15, but with
1522       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1523       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1524       complete with example surface forcing files and matlab scripts to look
1525       at the output and compare it with that of global_ocean.cs32x15.)
1526    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1527       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1528       to conform to the common rule.
1529    o check-in the first version of the coupler + interfaces for multi-components
1530       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1531       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1532       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1533       - ocean and atmos. share the same horizontal grid (no interpolation).
1534       - exchanges between component and coupler is done in forward_step
1535    o new verification experiment, cpl_aim+ocn:
1536       coupled ocean - AIM atmosphere on cs32 grid.
1537    
1538    checkpoint52d_pre
1539    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1540    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1541    
1542    checkpoint52c_post
1543    o Fixing OPTIONS files for use of exf:
1544      - ALLOW_ECCO not needed
1545      - ECCO_CPPOPTIONS.h should not be included from
1546        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1547        as has been the case in the past
1548      - All cal/exf related options are currently set in
1549        single header file. Should remain so until we
1550        agree on a consistent new policy.
1551    o Removed all CPP options for cal package.
1552      cal has no more CPP options.
1553    o modified STOREs in GAD_ADVECTION
1554    o corrected key comp. for passkey
1555    
1556    checkpoint52b_post
1557    o new version: "thsice" of thermodynamic sea-ice pkg:
1558     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1559     - modify fluxes but do not change theta directly;
1560     - light cleaning of bulk_force pkg (still needed with thsice).
1561     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1562       + output_thsice.txt to test thsice & bulk_force pkgs.
1563    o put back grid & coriolis monitor output.
1564    checkpoint52b_pre
1565    
1566    o call "do_the_model_io" at the beginning (=> dump initial state)
1567    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1568    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1569      (need info on NUMBER_OF_PTRACERS)
1570    o missing PTRACERS headers in some routines
1571    o default tamc.h in pkg/autodiff supposed to crash
1572      to ensure proper customization
1573    
1574    checkpoint52a_post
1575    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1576      - moved surfaceTendencyTice from pkg/seaice to main code
1577      - subroutine FREEZE_SURFACE now limits only surface temperature
1578        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1579        => new output.txt for global_ocean.cs32x15 & global_with_exf
1580      - keep the old version of FREEZE for backward compatibility;
1581        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1582      - corresponding modifs for TAF directives
1583    o added surface flux output variables to TIMEAVE_STATVARS
1584    o time-averaged output for pkg/ptracers
1585    o fix problem with ECCO-related divided adjoint
1586      snapshot file was missing some ad-variables,
1587      but no warning issued by TAF
1588    
1589    checkpoint52a_pre
1590    o some bug fixes for #undef REAL4_IS_SLOW
1591    
1592    checkpoint52 = ecco_c52_e35
1593    o after testing adjoints of checkpoint51u_post
1594    
1595    checkpoint51u_post
1596    o this is the post-merge tag of the ecco-branch
1597      (needs another clean checkout and re-testing)
1598    o various natl_box_adjoint configs and results
1599      but no input fields
1600    o obcs adjoint not yet merged!
1601    o adding ECCO global 1x1 and 2x2 degree configs
1602    o updated/extended some store directives for seaice
1603    o pkg/ecco now containes ecco-specific part of cost function
1604    o top level routines the_main_loop, forward_step
1605      supersede those in model/src/
1606      previous input data.cost now in data.ecco
1607      (new namelist ecco_cost_nml)
1608    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1609    
1610    checkpoint51t_post
1611    o this is the pre-merge tag of the ecco-branch
1612    
1613    checkpoint51s_post
1614    o cleanup: removed various obsolete #define-s
1615    o pkg/grdchk
1616      - renamed 'ph-grd 3' to 'grad-res'
1617      - merged from ecco-branch
1618        (remaining bug fixes for obcs gradient checks)
1619      - additional high-precision output for testreport
1620        (grep for 'precision_grdchk_result')
1621    
1622    checkpoint51r_post
1623    o cleaned up or removed CPP_OPTIONS.h files
1624    o updated results for some of the tests to reflect the new
1625      optfiles (-ieee: -O0 instead of -O3)
1626    
1627    checkpoint51q_post
1628    o cd_code:
1629      - moved cd_scheme.F -> cd_code_scheme.F
1630      - separate read_checkpoint from cd_code_ini_vars.F
1631      - separated cd_code part from write_checkpoint
1632      - updated AD_SOURCE, generated .flow
1633      - added CD_CODE_VARS.h to the_main_loop
1634      - Moving cd_code specific store dir.s to pkg/cd_code
1635    o ctrl package totally restructured
1636      - pack/unpack now optional and decoupled from
1637        xx_/adxx_ I/O
1638      - ctrl_pack/unpack cleaned
1639        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1640      - confined inclusion of AD_CONFIG.h to where necessary.
1641    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1642    
1643    checkpoint51p_post
1644    o create initial cd_code package
1645      - WARNING: the initialization of fields within packages
1646        is broken because INI_FIELDS (where READ_CHECKPOINT is
1647        called) is called *before* PACKAGES_INIT_VARIABLES.
1648        This seems to be backwards since
1649        1) its important to initially zero the entire field including
1650           the "halo" region
1651        2) zeroing needs to be done *before* reading pickup info
1652           and the pickup call might or might not happen in any
1653           particular run
1654      - this needs an overhaul for R2
1655    o cleanup verification/*/code/GMREDI_OPTIONS.h
1656    o cleanup testreport
1657    
1658    checkpoint51o_post
1659    o bringing AD-related verif's up to date with genmake2
1660      - carbon/
1661      - global_ocean.90x40x15/
1662      - hs.94.1x64x5/
1663      - (front_relax/ )
1664    o (more) consistent directory structure for AD-related verif.'s
1665    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1666    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1667    o bug fix in find_alpha.F for MDJWF:
1668      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1669        change rho -> rho-rhoConst
1670      - replace call find_rho to find_rhonum
1671    o initialisation of rFlx extended to full array (required by TAF)
1672      and shifted to thermodynamics
1673    o removed PTRACERS.h in ptracers routine
1674    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1675    o Correcting initialisations for fVerU, fVerV.
1676    o helping TAF to recognize dependency on kUp for
1677      fVerU, fVerV
1678    o Replacing delZ by delR in pkg/ctrl/
1679    checkpoint51o_pre
1680    
1681    o undid all of cp51 pending some cleanups and discussion
1682    o added the [#include "AD_CONFIG.h"] statement to all files that need
1683       it for adjoint/tl #defines
1684     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1685     o removed tools/genmake since it no longer works
1686    
1687    checkpoint51n_post
1688    o modifications to make FREEZE flux visible to pkg/kpp
1689      - moved surfaceTendencyTice from pkg/seaice to main code
1690      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1691      - subroutine FREEZE now limits only surface temperature
1692        (this means new output.txt for global_ocean.90x40x15,
1693         global_ocean.cs32x15, and global_with_exf)
1694    o added surface flux output variables to TIMEAVE_STATVARS
1695    
1696    checkpoint51n_pre
1697    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1698    o added [#include "AD_CONFIG.h"] to all files that use the following
1699      defines:
1700      - ALLOW_ADJOINT_RUN
1701      - ALLOW_TANGENTLINEAR_RUN
1702      - ALLOW_ECCO_OPTIMIZATION
1703    
1704    checkpoint51m_post
1705    o incorporating changes to get TAMC/TAF working in genmake2
1706      - added new TAMC/TAF targets to the Makefile
1707      - various cleanups related to package handling
1708      - these changes should have no impact on the forward model
1709    
1710    checkpoint51l_post
1711    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1712     - faster algorithm for cal_addtime.F
1713     - higher precision arithmetic, where needed
1714     - pkg/exf *startdate variables changed from calendar date to
1715       model integration time
1716    
1717    checkpoint51l_pre
1718    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1719    o enable to apply restoring on S & T only in a latitude band.
1720    o update output (external_forcing_surf modif. change truncation errors)
1721       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1722    
1723    checkpoint51k_post
1724    o change default to: useNHMTerms=.FALSE.
1725     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1726       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1727     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1728        exp1, ideal_2D_oce
1729     - change data file of oceanic exp (leave the results unchanged for now)
1730       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1731    o set gravitySign automatically according to the vertical coordinate used
1732      (and change sign: back to "logical" value: +1 when R increases downward)
1733    o added an include barrier to the default CPP_OPTIONS.h and
1734      removed the #include "PACKAGES_CONFIG.h" from it
1735    o fix a bug in mom_fluxform (from chk51j_post)
1736    
1737    checkpoint51j_post
1738    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1739    o adjusted some flow directives (dynamics, thermodynamics)
1740    o added cubed-sphere case to test cost function
1741    o heckpoint_lev?_directives.h now include
1742      pkg-specific directives, whenever those are enabled.
1743    o Moving pkg-specific flow directives to corresponding pkg
1744      Moving pkg-specific differentiation list to corresponding pkg
1745      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1746      ---> conventions are
1747           - pkg_ad.flow
1748           - pkg_ad_diff.list
1749           - pkg_ad_check_lev?_dir.h
1750    
1751    checkpoint51i_post
1752    o merge of the branch-genmake2
1753      - knowingly breaks the older genmake
1754      - automatic generation of all ALLOW_${PKG_NAME} defines
1755      - new testreport supersedes older testscript
1756    o large number of package inclusion and header cleanups
1757    checkpoint51i_pre
1758    
1759    o new output for adjoin of global ocean vector invariant
1760    o fix for checkpoint of thermodynamic seaice and bulk_force
1761    o Steph gchem various cleanups
1762    
1763    checkpoint 51h_pre
1764    o fixed some single quotes
1765    o modify gchem pkg to be more versatile
1766    o modifications to clean up dic pkg
1767    o add pkg/cfc
1768    
1769    checkpoint51g_post
1770    o provide links for ARPACK and ADM*TLM
1771    o start removing verification/vero/
1772    o update AD-related stuff
1773      (in particular some IF-statements in model/src/ routines)
1774    o adding to verification/global_ocean.90x40x15/ adjoint of
1775      vector invariant setup
1776    
1777    checkpoint51f_post
1778    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1779    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1780      of tracer Green's fucntions for ocean inversion project.
1781    
1782    checkpoint51f_pre
1783    o Added on-the-fly spatial interpolation capability
1784        "USE_EXF_INTERPOLATION" to pkg/exf.
1785      - This is a temporary Cartesian-grid hack until
1786        the super-duper ESMF coupler becomes available.
1787      - See verification/global_with_exf/README for usage example.
1788      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1789        flags and modified pkg/seaice accordingly.
1790    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1791        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1792        non-local transport term.
1793    
1794    checkpoint51e_post
1795    o pkg/mom_vecinv:
1796      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1797      - add time-ave diagnostic of vorticity advection.
1798    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1799    o atmospheric geopotential: - include water vapor effect;
1800                                - use p^kappa in p* scaling.
1801    o land pkg: read initial state from files.
1802    o AIM : add stratospheric drag in the upper level
1803    
1804    checkpoint51d_post
1805    o change function ILNBLNK (=> last non-blank char.) to return zero
1806      (instead of the string length) when the string. char is empty
1807    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1808    o modif's to restore TAMC compatibility
1809      - avoid "_d" constructs in PARAMETER declarations
1810      - avoid interrupting lines by comment lines
1811    o Use cluster local disks for purely local I/O
1812      vs. globally visible disks needed for ctrl stuff
1813      (merged from ecco-branch)
1814      - new active_file_loc... and mdsio_..._loc routines
1815      - affected packages: autodiff, ctrl, grdchk, mdsio
1816    
1817    checkpoint51c_post
1818    o introducing integer flag debugLevel
1819      - debLevZero: suppress all output
1820      - debLevA: standard
1821      - debLevB: equivalent to current debugMode=.TRUE.
1822    o introducing pathname variable mdsioLocalDir for mdsio
1823      that can be specified at runtime
1824      (relevant for cluster I/O to local disk)
1825    `
1826    >>>checkpoint51b_post
1827    adjoint of ptracers
1828    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1829    o extended state in checkpoint_lev?, etc.
1830    o alternative ctrl/cost with tr1 or ptracer
1831    o new comlev1_bibj_ptracers
1832    o new ptracers.flow
1833    o made ptracers_forcing same as external_forcing_s
1834    o added verification for adjoint with ptracers
1835      - adm. grdchk fail so far
1836      - tlm. grdchk OK
1837      - checked tapelev/comlev recomputations: OK
1838    <<<checkpoint51b_pre
1839    
1840    checkpoint51a_post
1841    o added code for biogeochemistry package
1842      - new pkgs: dic, gchem
1843      - new subroutine in ptracers
1844    o modify code for biogeo packages
1845      - in model/src and pkg/ptracers
1846    
1847    checkpoint51
1848    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1849      - autodiff, ctrl, exf, grdchk, seaice
1850      kept separate packages
1851      - cost, ecco, obcs
1852    o updating verification/internal_wave, verification/lab_sea
1853      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1854    
1855    checkpoint50i_post
1856    o Preparing next differentiable checkpoint and sync
1857      of MAIN vs. ecco-branch
1858      - 1st step: this one is differentiable
1859      - 2nd step: next(! not this) checkpoint will have updated packages
1860                  from ecco-branch)
1861    
1862    checkpoint50h_post
1863    o new package "land": provide surface BC for AIM.
1864    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1865    o AIM: use true log-P extrapolation for near surface temp (= as in
1866        F.Molteni paper) ; update aim.5l_cs output.
1867    o New variable in PARM03 for more flexible pickups
1868    o somewhat cleaned package initialisation sequence for
1869      ctrl/ cost/ ecco/ in packages_... routines
1870    
1871    checkpoint50g_post
1872    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1873      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1874      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1875        made the default because of faster convergence than ADI
1876    
1877    checkpoint50f_post
1878    o exf totally restructured
1879      - replaced all exf_set_ routines by one generic exf_set_gen.F
1880        and made sure it's still differentiable
1881      - split exf_getffields.F into new exf_bulkformulae.F
1882      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1883      - updated adjoint/makefile and relevant verif. accordingly
1884    
1885    checkpoint50f_pre
1886     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1887          + change Evap over land. (update aim.5l_cs output)
1888     o added missing .cvsignores and made uniform across expts
1889     o changed configuration of tidal_basin_2d expt
1890     o added pkg/debug functions for tracing code in fatal crashes
1891     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1892     o new fn in pkg/monitor to stop model if solution grows too big
1893     o removed lots of single quotes from comments
1894    
1895    checkpoint50e_post
1896    o make KPP work with PTRACERS
1897     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1898       nearly a copy of kpp_transport_s
1899     - there is no analogue to SurfaceTendencyS, so I have to use
1900       gPtr(of the surface layer) instead
1901    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1902    checkpoint50e_pre
1903    
1904    checkpoint50d_post
1905    o change kpp output from multiple-record state files to single-record state
1906      files analogous to write_state.F
1907    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1908      analogous to the cg2d-related output.
1909    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1910      so that writing to internal file fn (with length 512) fails.
1911    checkpoint50d_pre
1912    
1913    checkpoint50c_post
1914    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1915    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1916    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1917    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1918    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1919    
1920    checkpoint50c_pre
1921    Merging from release1_p13:
1922    o bug fix for pkg/seaice dynamic solver
1923    o Added SEAICE_initialHEFF to pkg/seaice
1924    
1925    checkpoint50b_post
1926    o store u*,v* in gU,V instead of in guNm1,gvNm1
1927    o in order to put the momForcing out of the Adams-Bashforth:
1928      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1929      to timestep.F
1930    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1931    o re-generate output for highly sensitive test-exp:
1932       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1933    
1934    checkpoint50b_pre
1935    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1936    o corrected CPP option mismatch in exf_Bulk... functions for case
1937      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1938    
1939    checkpoint50a_post
1940    o Bug fix for merging between c50 and KPP.
1941      ikey was passed from thermodynamics to kpp_calc via
1942      common block rather than being recomputed in kpp_calc,
1943      in contradiction with new key itdkey.
1944      New key ikppkey created, and tamc.h headers updated.
1945    
1946    checkpoint50
1947    - 2nd step of merge with ecco-branch:
1948      merge changes in ecco-branch back into main trunk
1949    - bug fix in find_alpha
1950    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1951    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1952    - merged some sliced AD support routines
1953    
1954    checkpoint49
1955    merged from ecco-branch:
1956    o exf:
1957      - Enable initialisation of forcing fields to constant
1958        (runtime) values.
1959      - in exf_getffields.F
1960        Reduce i-/j-loop to interior domain, discarding overlaps.
1961        That also fixes wrong TAF-key computations for key_1, key_2
1962        with bulf formulae.
1963      - exf_init.F modify #ifdef for exf_init_evap
1964      - exf_getffieldrec.F, ctrl_getrec.F
1965        The following INT-usages are not safe:
1966          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1967          fldcount = int(fldsecs/fldperiod) + 1
1968        and were modified.
1969    o autodiff: checkpoint_lev...
1970      - updated storing for bulk formulae (some arrays were missing)
1971      - added state for seaice package
1972      - synchronized with main branch
1973    o DIVA:
1974      Modif.s in
1975      - the_main_loop.F
1976      - the_model_main.F
1977      and added cost_final_restore.F cost_final_store.F
1978      o With these changes, it is possible to fully separate
1979        the first forward run to compute the cost function (mdthe_main_loop)
1980        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1981        into separate model executions.
1982        This enables better tuning of DIVA to given queue sizes.
1983      o Loss of cost function value in consecutive DIVA runs is
1984        fixed by storing to 'costfinal' file.
1985      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1986        beginning/end of adjoint integration is accounted for.
1987      The current changes apply to TAF-1.4.26.
1988      TAF has one remaining bug, requiring one manual change
1989      (see MITgcm manual).
1990    o cal: synchronized between MAIN and ecco-branch
1991    
1992    checkpoint48i_post
1993    o Changes to restore differentiability of code w.r.t. previous tag
1994      (mostly adding new routines to make list and replacing
1995      pressure by totPhiHyd).
1996    o Updated and merged grdchk package
1997      - has both ADM and TLM checks
1998      - works for single- and multi-proc.
1999      - output cleaned
2000      - worked successfully for parallel DIVA
2001    o genmake:
2002      - Adding -platform=SP4
2003      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2004    o Modif. for DIVA:
2005      ctrl_unpack should not be called in intermediate DIVA interval.
2006      (similar thing would apply for active files such as
2007      tbar, sbar, psbar, which should not be reinitialised;
2008      only relevant for ecco-branch)
2009    
2010    checkpoint48h_post
2011    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2012    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2013    o Added SEAICE_initialHEFF to pkg/seaice
2014    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2015    
2016    checkpoint48g_post
2017    --- EOS:
2018    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2019      store total Potential in totPhyHyd for diagnostics & EOS.
2020    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2021    --- Pressure/geopotential gradient:
2022    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2023    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2024      ( changes results of global_ocean_pressure )
2025    o NLFS + z-coord.: add eta*Rho' contribution.
2026    o accurate phiHyd when using interface-W at the middle between 2 centers
2027     ( changes results of ideal_2D_oce )
2028    o includes r* 2nd term in potential gradient.
2029    
2030    checkpoint48f_post
2031    Merging from release1_p12:
2032    o Modifications for using pkg/exf with pkg/seaice
2033      - improved description of the various forcing configurations
2034      - added basic radiation bulk formulae to pkg/exf
2035      - units/sign fix for evap computation in exf_getffields.F
2036      - updated verification/global_with_exf/results/output.txt
2037    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2038      (SBO) core products, including oceanic mass, center-of-mass,
2039      angular, and bottom pressure (see pkg/sbo/README.sbo).
2040    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2041      to avoid negative values in shallow regions.
2042      - updated verification/natl_box/results/output.txt
2043      - updated verification/lab_sea/results/output.txt
2044    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2045    o Added useSingleCpuIO option (see PARAMS.h).
2046    o Updated useSingleCpuIO option in mdsio_writefield.F to
2047      work with multi-field files, e.g., for single-file pickup.
2048    o pkg/seaice:
2049      - bug fix in growth.F: QNET for no shortwave case
2050      - added HeffFile for specifying initial sea-ice thickness
2051      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2052    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2053      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2054    o pkg/seaice:
2055      - adjoint-friendly modifications
2056      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2057    
2058    checkpoint48e_post
2059    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2060    o dynamics: change definition of computational domain & adapt mom_fluxform
2061      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2062    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2063        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2064        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2065        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2066        inverted_barometer solid-body.cs-32x32x1
2067      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2068    
2069    checkpoint48d_post
2070    o in preparation for r*:
2071     a) use pre-computed gradient of hydrostatic potential:
2072        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2073     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2074        => affects results of glob_oce_pressure (different truncation error)  
2075      update output.txt of ideal_2D_oce & global_ocean_pressure
2076    
2077    checkpoint48d_pre
2078    o in preparation for r*:
2079      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2080      pass the 2 comp. of the grad. as arguments to momentum S/R.
2081      but for the moment, only used if it does not change the results.
2082    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2083    
2084    checkpoint48c_post
2085    Modifications in treatment of initial flux forcing controls
2086    to avoid extra storing of flux fields.
2087    
2088    checkpoint48c_pre
2089    o Added tidal_basin_2d experiment (currently 1D!)
2090    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2091    
2092    checkpoint48b_post
2093    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2094     (modification to pressure gradient not yet implemented)
2095    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2096      (for U & V) that are used for vertical advection of momentum.
2097    
2098    checkpoint48a_post
2099    o In preparation for r*, use temp. array to compute vertical transport
2100       in flux-form momentum pkg. => change results of few test-exp.
2101      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2102                        lab_sea, natl_box & plume_on_slope
2103    
2104    checkpoint48
2105    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2106    
2107    checkpoint47j_post
2108    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2109    o moved adexch from forward_step to addummy_in_stepping
2110    o added exch in ctrl_map_...
2111    o aveFreq.=0. at end of cost_final to avoid overwrite in
2112      reverse checkpointing loop
2113    o Yet more changes in gmredi:
2114      * adgmredi_calc_tensor
2115        avoiding all recomputation of gmredi_slope_limit
2116      * adgmredi_x/y/rtransport
2117        added flag for excessive storing to avoid recomp. of
2118        u/v/rtans, dTdx/y/z
2119        -> this is not really necessary and very memory-consuming
2120      * adgmredi_slope_psi:
2121        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2122      * gmredi_slope_limit
2123        re-activated full calculation of taperfct for case 'ac02'
2124    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2125    
2126    checkpoint47i_post
2127    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2128    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2129      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2130    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2131    o gmredi: fix few bugs.
2132    
2133    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2134    This will be a good checkpoint to plug into the ecco-branch.
2135    o few modif.'s to get latest version adjointed
2136      (mainly kick out code in ini_linear_phisurf)
2137    o modif's to run adjoint with exactConserv
2138    o case GM_BOLUS_ADVEC should be cleaned
2139      S/R gmredi_slope_psi should be cleaned
2140    o verification/carbon now has exactConserv=.TRUE.
2141    
2142    checkpoint47g_post
2143    o time-average AIM output: becomes independent from statvars time-average
2144      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2145    o After TAF bug fix:
2146      Tested adjoint of gmredi package.
2147      Tests were done with checkpoint47 rather than with latest
2148      checkpoint47f_post since the latter is broken for the adjoint
2149      verification/carbon/ contains both ADM and TLM gradient checks.
2150    Here they are, before they get changed/lost/stolen.
2151    Mostly modif.'s to fix numerical sensitivities.
2152    Gradient checks OK for
2153    - GM_taper_scheme:
2154      * clipping
2155      * ac02
2156      * linear
2157      * glw91
2158      * dm95
2159      * ldd97
2160    - GMREDI_OPTIONS:
2161      * GM_VISBECK_VARIABLE_K
2162      * GM_NON_UNITY_DIAGONAL
2163      * GM_EXTRA_DIAGONAL
2164      * GM_BOLUS_ADVEC
2165    in conjunction with data.gmredi parameters to be checked in
2166    in a few minutes under verification/carbon/code/
2167    
2168    checkpoint47f_post
2169    Merging from release1_p10:
2170    o modifications for using pkg/exf with pkg/seaice
2171      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2172        and SEAICE_EXTERNAL_FLUXES
2173      - pkg/exf CPP options EXF_READ_EVAP and
2174        EXF_NO_BULK_COMPUTATIONS
2175      - usage examples are Experiments 8 and 9 in
2176        verification/lab_sea/README
2177      - verification/lab_sea default experiment now uses
2178        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2179    
2180    checkpoint47e_post
2181    o created a tag prior to creating a branch
2182    
2183    checkpoint47d_post
2184    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2185      at the bottom boundary had an erroneous half slip boundary condition
2186    o added bottom drag and no slip boundary condition capabilities to
2187      oceanic pressure coordinates code
2188    o added new verification experiment global_ocean_pressure, this experiment is
2189      also described in the tutorial section of the manual
2190    checkpoint47d_pre
2191    
2192    checkpoint47c_post
2193    o Added a verification experiment for a global cubed-sphere ocean run
2194      -  verification/global_ocean.cubed32x32x30
2195      -  uses pkg/therm_seaice and pkg/bulk_forcing
2196    
2197    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2198    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2199      when using P-coordinate; only implemented for atmospheric config.
2200    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2201      NOTES: requires option NONLIN_FRSURF to be "#define".
2202    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2203    
2204    checkpoint47b_post
2205    Merging from release1_p9:
2206    o pkg/seaice
2207      - removed GOTO's and added taf directives
2208      - double precision constants to reduce the g77 (Linux)
2209        to F77 (SGI) differences reported in release1_p8
2210    o tools/genmake
2211      - added SGI options
2212    o verification/testscript
2213      - updated to that of checkpoint47a_post
2214    o verification/global_ocean.90x40x15/input/eedata
2215      - modified for SGI f77 compatibility
2216    o verification/lab_sea
2217      - added description of sea-ice model
2218      - added missing matlab routines
2219      - added test of thermodynamics parallelization
2220    
2221    checkpoint47a_post
2222    o new pkg: aim_v23
2223     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2224       for now, keep the same surface forcing as before.
2225     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2226     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2227     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2228    o add diagnostic of surface correction term in monitor output
2229    
2230    o bulk_force and therm_seaice
2231    - Two packages:  bulk_force (Bulk forcing)
2232      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2233    - Earlier integration from Stephaine Dutkiewicz
2234      and Patrick Heimbach.
2235    - Two ifdef statements for compile time,
2236       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2237    
2238    checkpoint47
2239    differentiable version of checkpoint46n_post
2240    o bug fix in quasihydrostaticterms
2241    o * "clean" adjoint code (in terms of extensive recomputations)
2242        can now be obtained for all GMREDI options (i.e. for
2243        - GM_VISBECK_VARIABLE_K
2244        - GM_NON_UNITY_DIAGONAL
2245        - GM_EXTRA_DIAGONAL
2246        - GM_BOLUS_ADVEC )
2247      * However, wrong gradient check problem remains unsolved.
2248      * New CPP options have been introduced for different
2249        tapering schemes
2250    o external_fields_load now part of differentiation list
2251    o pressure needs multiple storing;
2252      would be nice to have store_pressure at beginning or
2253      end of forward_step, e.g. by having phiHyd global (5-dim.)
2254      (NB: pressure is needed for certain cases in find_rho,
2255      which is also invoked through convective_adjustment).
2256    o recomputations in find_rho for cases
2257     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2258    o #define ATMOSPHERIC_LOADING should be differentiable
2259    o ini_forcing shifted to begining of initialise_varia
2260    o Incorporating QNVS line search routines into MITgcm
2261      (this is separate code, and therefore not under pkg)
2262      lsopt/, optim/
2263    o Updated verification/carbon/
2264      - #define GM_VISBECK_VARIABLE_K
2265      - GM_taper_scheme    = 'ldd97'    
2266    
2267    checkpoint46n_post
2268    Merging from release1_p8:
2269    o verification/natl_box:
2270      updating new external_fields_load routine
2271    o New package: pkg/seaice
2272      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2273      The sea-ice code is based on Hibler (1979-1980).
2274      Two sea-ice dynamic solvers, ADI and LSR, are included.
2275      In addition to computing prognostic sea-ice variables and diagnosing
2276      the forcing/external data fields that drive the ocean model,
2277      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2278      The implied surface heat flux is then stored in variable
2279      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2280      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2281      non-local transport term.  Because this call precedes model
2282      thermodynamics, temperature under sea-ice may not be "exactly" at
2283      the freezing point by the time theta is dumped or time-averaged.
2284      N.B.: fairly large differences in accuracy occur across
2285            different platforms/compilers; comparison between
2286            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2287            generated output gives:
2288       T           S           U           V
2289      C D M    c        m  s        m  s        m  s        m  s
2290      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2291      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2292      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2293    
2294      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2295    o GAD:
2296      - generated new common blocks to account for call of
2297        same gad routines with differing traceridentities
2298        (needed to modify tracerIdentity indices in GAD.h)
2299      - generated separate common blocks for case useCubedSphereExchange
2300        (Department of Futurology)
2301      - parameter lists to gmredi_?transport: added tracerIdentity
2302      - added new key indices to tamc.h
2303    o external_fields_load:
2304      - added this routine to TAF list
2305      - needed to make some common blocks global and additional storing
2306        along the same lines as exf package (checkpoint_lev?_directives.h)
2307    o exf:
2308      updated external forcing package
2309      - bug fixes carried over from ecco-branch
2310        (missing OBCS_OPTIONS.h in two routines)
2311      - enable easy to use "no forcing".
2312      - added exf I/O for atmospheric loading
2313      - added exf I/O for runoff data
2314      - transfered scaling between exf <-> MITgcm to exf namelist
2315    o Adding new verification experiment global_with_exf.
2316      This verification experiment is almost identical to the
2317      global_ocean.90x40x15 experiment, except that it uses
2318      the exf (and cal) package instead of the
2319      external_fields_load routine (cf README file).
2320    
2321    checkpoint46m_post
2322    o modified testscript to return -- when there are no lines of "%MON" output
2323    o added new flag "quasiHydrostatic" for QH mode
2324      and new routine quasihydrostaticterms()
2325    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2326      New routine: mom_u_coriolis_nh()
2327    o fixed sign of non-hydrostatic metric terms in u and v equations.
2328      Depend on correct sign of gravitySign.
2329    o added work.pc* to .cvsignore in aim directories using ifc
2330    o introduced flag for controllin non-hydrostatic metric terms
2331    o removed gravitySign from PARM04
2332    o switched to g77/ifc from pgf77 in aim experiments
2333    
2334    checkpoint46l_post
2335    o made convective adjustment work with pressure coordinates:
2336     - changed the direction of k-loop in convective_adjustment.F for the
2337       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
2338     - adjusted the reference pressure k-index in convective_adjustment.F
2339     - adjusted the convection condition in convect.F (in analogy to
2340       calc_ivdc.F)
2341     - convective_adjustment no longer computes anything on the halos
2342     - removed the warnings about negative salinity from find_rho.F and
2343       find_alpha.F; instead the new routine look_for_neg_salinity, called
2344       at the beginning of find_rho, find_alpha, and find_beta, does a
2345       check of the entire slice, if CPP-option
2346       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
2347    checkpoint46l_pre
2348    
2349    checkpoint46k_post
2350    o fixed the verification/global_ocean.90x40x15 experiment:
2351     - new bathymetry (the world according to A., JMC, and M.)
2352     - new initial fields and forcing fields (*.bin files)
2353     - new POLY3.COEFFS (for the next release one should switch to a full
2354       equation of state: JMD95P or MDJWF)
2355     - fixed several errors and redundancies in the data file
2356     - experiment uses looped cells
2357     - added matlab directory with diagnostic scripts for plotting of output
2358    
2359    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
2360     - read AIM physics parameters from a file (data.aimphys)
2361     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
2362    
2363    checkpoint46j_post
2364    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
2365    o move wVel computation at the end of the time step, in S/R integr_continuity
2366    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
2367    o update timeave pkg for wVel diagnostic.
2368    checkpoint46j_pre
2369    
2370    checkpoint46i_post
2371    o Clean up AIM package (and keep the results unchanged):
2372      include CPP_OPTION and use IMPLICT NONE in all routines ;
2373      declare all the variables _RL ; use _d 0 for all numerical constants.
2374      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
2375    
2376    checkpoint46h_post
2377    o cleaned up the use of rhoNil and rhoConst.
2378      - rhoNil should only appear in the LINEAR equation of state, everywhere
2379        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
2380        and the dynamical equations are all divided by rhoConst
2381    o introduced new parameter rhoConstFresh, a reference density of fresh
2382      water, to remove the fresh water flux's dependence on rhoNil. The default
2383      value is 999.8 kg/m^3
2384    o cleanup up external_forcing.F and external_forcing_surf.F
2385      - can now be used by both OCEANIC and OCEANICP
2386    checkpoint46h_pre
2387    
2388     Added code to convert surface volume flux (fresh water) into
2389     a mass flux when using P coordinates in the ocean (OCEANICP).
2390     Note: It assumes you have set rho0=rhoConst=density of fresh water.
2391    
2392    checkpoint46g_post
2393    o Include a new diagnostic variable phiHydLow for the ocean model
2394      - in z-coordinates, it is the bottom pressure anomaly
2395      - in p-coordinates, it is the sea surface elevation
2396      - in both cases, these variable have global drift, reflecting the mass
2397        drift in z-coordinates and the volume drift in p-coordinates
2398      - included time averaging for phiHydLow, be aware of the drift!
2399    o depth-dependent computation of Bo_surf for pressure coordinates
2400      in the ocean (buoyancyRelation='OCEANICP')
2401      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
2402        Theta, Salinity, and Pressure in the parameter list. This routine is
2403        presently contained in find_rho.F. This routine does not give the
2404        correct density for 'POLY3', which would be a z-dependent reference
2405        density.
2406    o cleaned up find_rho
2407      - removed obsolete 'eqn' from the parameter list.
2408    o added two new verification experiments: gop and goz
2409      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
2410    checkpoint46g_pre
2411    
2412    checkpoint46f_post
2413    o Enable tangent linear (forward mode) gradient checks:
2414      - extended active file handling to g_... files
2415      - added TANGENT_SIMULATION to theSimulationMode
2416      - extended grdchk package accordingly
2417    o added tangent linear setup in verification/carbon/code_ftl
2418    o added adjoint setup in verification/front_relax/code_ad
2419    
2420    checkpoint46e_post
2421    o Added new equation of state -> MDJWF
2422      - EOS of McDougall et al., 2002, JAOT, submitted
2423      - caveat: the equation of state is only valid for a smaller (more
2424        realistic?) range of values than JMD95P/Z and UNESCO
2425      - added masks to the calculation of pressure in store_pressure
2426      - added more check values for density in check_eos (ini_eos.F), some of
2427        the old check values are out of the range of the MDJWF-eos, so don't
2428        expect perfect matches for those
2429    checkpoint46e_pre
2430    
2431    checkpoint46d_post
2432    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
2433      'OCEANICP', also initialised field pressure correctly in ini_eos in the
2434      case of pressure coordinates. eosType='JMD95Z' in
2435      combination with buoyancyRelation='OCEANICP' now causes an error.
2436    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2437      in find_alpha/beta.
2438    checkpoint46d_pre
2439    
2440    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2441      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
2442    
2443    checkpoint46c_post
2444    o Changes necessary for ocean in p-coordinates
2445     -  Added new buoyancy relation = 'OCEANICP'
2446     -  Added new parameters = gravitySign (this used to be contained inside
2447        the factor dRdZ which I added when we first switched to R coordinates).
2448     X GM/Redi is not compatible (yet)
2449     X bottom drag and no-slip need to be debugged.
2450    checkpoint46c_pre
2451    
2452    checkpoint46b_post
2453    o Added new equation of state -> JMD95Z and JMD95P
2454      - EOS of Jackett and McDougall, 1995, JAOT
2455      - moved all EOS parameters into EOS.h
2456      - new routines ini_eos.F, store_pressure.F
2457    o Added UNESCO EOS, but not recommended because it requires
2458      in-situ temperature (see JMD95)
2459    o Modified formatting for knudsen2.f in utils/knudsen2 and added
2460      unesco.f to be used with POLY3
2461    checkpoint46b_pre
2462    
2463    checkpoint46a_post
2464    o Added (atmospheric) pressure loading
2465      - new field in FFIELDS.h, etc...
2466      - new cpp flag ATMOSPHERIC_LOADING
2467    o Changed hFacC to _hFacC in calc_phi_hyd.F
2468    o Added SHORTWAVE_HEATING to some files for consistency
2469    checkpoint46a_pre
2470    
2471    checkpoint46
2472    further merges from release1_p5
2473    o new ctrl package
2474      - adopted from ECCO environment to enable optimization
2475      - added Eliassen Palm fluxes to controls
2476    o added Eliassen Palm flux controls to gradient check package
2477    o cost package
2478      - Compatible with new ctrl package
2479      - added Eliassen Palm cost hooks
2480      - modif's of existing cost functions
2481    o Adjoint-related bug fixes in kpp:
2482      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
2483      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
2484    o autodiff package
2485      - flow directives:
2486        + new for S/R do_the_model_io
2487        + enhanced for S/R checkpoint
2488        + new gmredi.flow
2489      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
2490        disable adcommon.h/g_common.h by default.
2491      - fixed problem for adjoint of global_max
2492    o modified verification/carbon/
2493    o New setup for adjoint of global_ocean
2494    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
2495    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
2496    o incorporated hooks for sponge layer code (external_forcing.F)
2497    
2498    checkpoint45d_post
2499    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
2500    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
2501      (affects plume_on_slope "cg2d" output)
2502    o add new parameter deltaTfreesurf for free-surface time stepping
2503    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
2504  o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B  o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
2505  o change phiMin in exp1 (to agree with documentation)  o change phiMin in exp1 (to agree with documentation)
2506  o add new flags:  o add new flags:

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