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revision 1.75 by jmc, Thu Jun 20 23:52:03 2002 UTC revision 1.711 by jmc, Sun Aug 6 01:46:46 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    o add "_d 0" to real constant of pkg/cfc subroutines ;
7       update exp. cfc_exemple & tutorial_cfc_offline output files.
8    o multi-threading and IO:
9      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
10        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
11      - barrier before and after reading.
12      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
13      - avoid using MDS_WRITELOCAL for LAND pkg output.
14      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
15        common-block variables ; Allows multi-threading with master-thread IO.
16    o change default MAX_NO_THREADS from 32 to 4 ;
17      and stop cleanly when MAX_NO_THREADS is too small.
18    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
19    
20    checkpoint58m_post
21    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
22       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
23    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
24       keep global_ocean.90x40x15 (for AD testing) with former secondary test
25       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
26    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
27        add MITgcm_tutorials (= code + all the tutorials)
28    o ecco, option to compute cost for total ssh (mean+anom)
29    o consistent with addition of ptracer and ssh in pkg/profiles
30    o profiles: adding ptracer and ssh
31    o testreport: change multi-test output-file name
32      (from output.txt.{name} to output.{name}.txt)
33    o profiles: now ok for mutli-threaded case
34    o seaice: add 4 parameters for different advection schemes for area,
35      (effective) seaice thickness, enthalphy, and snow height. Their default
36      is the standard parameter SEAICEadvScheme
37    o calc_gw:
38     - add cosFacU in zonal viscous flux (harmonic.visc.).
39     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
40       of tutorial_plume_on_slope.
41    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
42    o calc_gw: true flux-form, account for horizontal grid spacing.
43      update rotating_tank results, but not plume_on_slope (affected at
44      truncation level, 11 digits).
45    
46    checkpoint58l_post
47    o calc_gw:
48     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
49     - remove side-drag for now (need to fix it); update plume_on_slope results.
50     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
51    o commit code to make SST/SSS weights spatially variable
52      (based on either variable in-situ or variable initial T/S weights)
53    o pkg/ecco:
54      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
55        now based on horizontally varying weights wthetaLev, wsaltLev
56      * cost_averagesflags now returns year indices in addition to day, month
57      * sflux balance is performed on annual basis
58        (sflxumm, sfluxmm2, bal_sfluxmm)
59      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
60        including separate counting and multipliers
61    o pkg/rbcs
62      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
63    
64    checkpoint58k_post
65    o testreport:
66     - always build in dir. "build" (if not there, mkdir build instead of building
67       & running in input)
68     - run in dir run (if it exists), in build otherwise.
69     - call prepare_run (if input/prepare_run exists)
70     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
71    o pkg/exf modifications to interpolation and rotation routines for more
72       reasonable treatment of North Pole singularity: for tracers North Pole
73       value is set to northernmost zonal-mean value, for zonal velocity it is
74       set to zero, and for meridional velocity it is set to northernmost value.
75    o pkg/exf/exf_check_range.F
76     - add tile index to diagnostics and move stop statement to the very
77       end of the routine.
78    o pkg/diagnostics: (diagnostics_main_init.F)
79      define title of isomorphic variables according to the current config.
80    o pkg/thsice with pkg/seaice dynamics:
81    - fix domain of computation (interior only, required for exf) and do exchanges
82    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
83    o towards a standard way of dealing with multi-threading in MONITOR
84      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
85    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
86       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
87    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
88    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
89    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
90       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
91    o tracer advection:
92     - clean-up and simplify calc_common_factors.F
93     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
94       advection subroutine (but still not used within DST advection S/R)
95    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
96    
97    checkpoint58j_post
98    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
99      from file (collects calls previously in FORWARD_STEP)
100    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
101    o adjoint store dir. adjusted accordingly
102    o genmake2
103      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
104    
105    checkpoint58i_post
106    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
107      on wind stress (SEAICEstressFactor defaults to 1.)
108    o Total number of Timers is finite (<=40): comment out 2 non-essential one
109      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
110    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
111      on CS-grid: no longer loosing mass.
112    o exf & curvilinear-grid: no longer modify longitude xC & xG.
113    o pkg/ggl90: fix sloppy output and fix a bug
114    o pkg/seaice: added SEAICEuseEVPpickup parameter
115      - Set to false in order to start EVP solver with
116        non-EVP pickup files when using SEAICEuseEVP
117      - fix sign error in diffusion in seaice_calc_rhs
118    
119    checkpoint58h_post
120    * Modifications for bottom topography control
121      o replace hFacC by _hFacC at various places
122      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
123      o add non-self-adjoint cg2d_nsa
124      o update autodiff support routines
125      o re-initialise hfac after ctrl_depth_ini
126      o works for 5x5 box, doesnt work for global_ocean.90x40x15
127    * Adding verification for 5x5 box (4-layer) bottom topography control
128    
129    checkpoint58g_post
130    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
131       used for mean seasonal cycle, mean diurnal cycle); add an example
132       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
133    o pkg/ggl90:
134      - add parameter (minimum surface kinetic energy)
135      - fix bug (avoiding division by zero)
136    o couple pkg/thsice to pkg/seaice:
137      - modify advection in seaice to accomodate new scalar fields to be advected
138      - only muliDimAdection scheme work with seaice/thsice
139      - mapping of thsice-variables to seaice-variables, back and forth
140      - does not break the verification experiments, but does not give the
141        desired results either
142    o pkg/seaice
143      - make (default) second order advection a bit less confusing?
144    
145    checkpoint58f_post
146    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
147      to pkg/seaice):
148      - new routines thsice_map_exf and thsice_get_exf provide the interface
149      - add an additional formal parameter to thsice_solve4temp
150    o pkg/exf:
151      - add new fields wspeed, snowprecip (to be able to couple to thsice)
152      - correct Stefan-Boltzmann constant
153      - new parameter for longwave surface emittance
154      - separate some stuff from exf_bulkformulae into new routines  
155        exf_radiation, exf_wind
156      - add new parameters and constants: longwave emissivity for ocean, ice
157        and snow, evaporation parameters over ice
158      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
159        either wind from stress or stress from wind
160    o pkg/thSIce:
161    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
162    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
163       and THSICE_CALC_THICKN
164    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
165    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
166      to make debugging easier.
167    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
168    o pkg/bulk_force:
169      - clean-up comments and parameters ;
170      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
171    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
172      generate new output for test-experiment: aim.5l_cs.thSI
173    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
174      testreport accordingly
175    
176    checkpoint58e_post
177    o SEAICE_CGRID adjoint done
178    o R_STAR adjoint implemented.
179      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
180      * need to sort out init. of h0facc, etc.
181    o Make pkg/profile fully independent of ecco,cost, etc. stuff
182      to be able to use it in pure forward.
183    
184    checkpoint58d_post
185    o upgrade simple test-experiment to tutorial example:
186     step.1: duplicate the experiment and (step.2) will remove the old copy.
187      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
188      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
189      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
190      tutorial_global_oce_biogeo    <- copy of dic_example
191      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
192      tutorial_plume_on_slope       <- copy of plume_on_slope
193      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
194      tutorial_global_oce_optim     <- empty for now (David ?)
195      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
196     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
197    o correct a sign problem in cost_scat.F
198    o obcs and ptracers: fix boundary conditions for advections schemes
199      with larger stencil
200    o thsice adjoint: start
201    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
202      completeness
203    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
204      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
205    o ptracers adjoint:
206      * avoid extensive recomputatations
207      * fix missing re-init. of gptr (missed by TAF)
208    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
209      me to turn off the excessive output to STDOUT that this package produces
210    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
211      and add those terms in Vector-Invariant formulation.
212    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
213      if the control period (xx_hfluxperiod etc) is 0
214    o in profiles pkg, clean routines and fix details
215    o in ecco pkg, reading ssh data:
216      fix problem in case the model does not start at iter0=0
217    o fix mnc-pickup/restart for ptracers
218    o new package prifiles:
219      code to compute profile-based cost by Gael Forget
220      (modifs in ecco, ctrl, autodiff)
221    o Benign bug fix in initialization (spotted by M. Mazloff) of
222      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
223    
224    checkpoint58c_post
225    o adjoint: finish NLFS adjoint and provide reference output in
226      verification/global_ocean.90x40x15/results_ad_nlfs
227    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
228      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
229      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
230      with SEAICE_CGRID defined.
231    o move calendarDumps from "data" to "data.cal" and clean-up the code
232      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
233    o add useEXF & useCAL flags (for now, set in hard-coded way)
234    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
235      (were missing in NH mode, and wrong in quasihydrostatic mode).
236      waiting for Chris updated version of calc_gw to add those CALLs.
237    o fix bug in quasihydrostatic S/R ;
238      add a test for this option: global_ocean.90x40x15.qshyd
239    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
240      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
241    o add on/off flag useOffLine for package OFFLINE
242    o seaice:
243      - modify advection so that it works also on the C-grid
244      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
245        problem in multi-tile runs with C-grid
246      - add flags for clipping ice velocities and/or masking solver forcing
247      - fix drag (ocean on ice) formulation and a bug that caused noise in the
248        C-grid solver
249      - added a few comments to seaice_diffusion.F
250      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
251        are now exclusive)
252      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
253        required re-ordering the code a little:
254       + make DAIRN global variable (defined in SEAICE)
255       + move computation of the viscosities eta and zeta into a new separate
256         routine (because I need to recompute them in seaice_ocean_stress.F)
257    
258    checkpoint58b_post
259    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
260      update output.txt of exp. aim.5l_cs.thSI
261    o various mnc cleanups and improvements:
262      + shrink lookup tables by factor of ~4
263      + better error reporting when running out of lookup space
264      + able to handle longer path/file names (up to 500 chars)
265    o adjoint:
266      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
267      - TBD: "hidden" mom_vecinv recomp. in dynamics
268    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
269     (allow to differentiate between forcing components using new integer flags:
270      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
271     and add new flag to put Dissipation tendency out of Adams-Bashforth.
272    o ecco
273      - enable trend removal from SSH anomaly obs.
274    o adjoint
275      - a fix for PmEpR when #undef EXACT_CONSERV
276      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
277      - try to fix "hidden" recomp. in forward_step for NLFS
278        (NLFS seems broken sometimes after I checked it in)
279    o seaice:
280     - add c-grid version of the dynamic solver:
281       + three new routines that are the c-grid substitute lsr, dynsolver
282         and ostres
283       + put a few fields that were local to dynsolver into global common
284         blocks, so that I can move the computation of stresses etc into
285         seaice_lsr (saves coding but may break the adjoint).
286     - replace more hardwired parameters by runtime parameters
287     - add ice masks that mask the rhs of the implicit solvers where there
288       is no ice (commented out in seaice_dynsolver, because i am not sure
289       if this works properly), eventually this should replace the clipping
290       of ice velocities in seaice_dynsolver to +/-40cm/s.
291    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
292      include it only where its needed
293    o move balancing of fluxes before the call of external_forcing_surf
294    o seaice:
295      - correct units of turning angles (now they are really in degrees)
296      - move computation of GWATX/Y out of main routine into dynsolver
297      - initialize GWATX/Y in seaice_init
298    o Apply mask on Fresh-Water flux (needed for SSH forcing).
299      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
300    o seaice: add runtime flags for turning angles (default to zero)
301    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
302      and trend from exf forcing and ctrl control adjustments
303    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
304      (since checkpoint57x_post)
305    o change the default rotation period to 86164.s = the Earth rotation
306    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
307      and based on a reference stratification. Tested within hs94.cs-32x32x5.
308    o seaice advection: add code for choosing between the default (2nd order
309      central differences) and multiDim advection schemes provided by
310      pkg/generic_advdiff
311    o seaice:
312      - removed all references to SEAICE_GRID.h fields from
313        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
314        (cubed-sphere configuration will change a little)
315      - grid computations in seaice_init are obsolete now.
316      - cleaned up code a little so that is easier to read (hopefully).
317      - added new (better?) discretizations of default advection and diffusion
318        (turn on with SEAICEuseFluxForm)
319      - replace 1 in 3d global fields by kSurface in growth.F
320      
321    checkpoint58a_post
322    o seaice:
323      - bug fix in advect.F
324    o shelfice:
325      - separate shelfice load anomaly from pload (breaks with time
326        dependent forcing), => introduce constant field shelficeLoadAnomaly.
327        Its default is 0., but it may be computed more cleverly from (unknown)
328        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
329        done offline. A good approximation of the pressure load anomaly is
330        necessary to avoid large initial adjustment processes underneath
331        deep-reaching shelfice.
332      - small fix in ISOMIP shelfice_thermodynamics
333      - add more sophisticated thermodynamics of Hellmer (1989), this is
334        now the default
335      - give a few constants more intuitive names
336    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
337      if bulk formulae are used in long integration (especially EmPmR). Turn
338      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
339      if balancePrintMean, the imbalance that is substracted is printed to
340      STDOUT.
341    o fix bug (typo) in obcs_apply_eta.F
342    o add a new package shelfice which enables us to model the circulation
343      underneath shelf-ice with draughts of hundreds of meters.
344     - works
345     - to do: + include improved thermodynamics
346              + check whether kSurfC (from model/inc/SURFACE.h) can be used
347                instead of new field kTopC
348              + can we use topoFile, Ro_surf and existing code in ini_depth.F
349                instead of new field R_shelfIce and new code in ini_depth.F
350                and ini_mask_etc.F?
351              + adjust vertical mixing schemes?
352    o seaice pkg:
353     - add a cpp-flag to include a simple formula for a salinity dependent
354       freezing point of sea water at the surface
355     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
356       meridional stresses are now different (and hopefully correct)
357    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
358       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
359       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
360    o pkg/diagnostics: add options and parameters for regional-statistics
361       diagnostics ; define regions by reading a region-mask from a file
362       (might add other options later)
363    o pkg/bulk_force:
364     - add option and parameters to use AIM surface-flux formulae.
365     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
366       others forcing fields (defined in PARM05, parameter file "data") are loaded
367       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
368     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
369     - use the right EXCH call for uwind,vwind (to work on CS-grid).
370     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
371       and parameters (note: calcWindStress replaces .NOT.readwindstress).
372     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
373    
374    checkpoint58
375    o add "--embed-source" option to genmake2 which, when the supporting
376      tools can be compiled (as determined by genmake2) will turn on the
377      embed_files package which then embeds the entire MITgcm source code
378      (*.[fFhc] + Makefile) used for the build within the executable
379      - requested by CNH but off by default
380      - adds a paltry <9MB to the mitgcmuv executable in most cases
381      - only writes the output when useEMBEDSRC in eedata is true
382    o clean up 3-dim. relaxation codes:
383      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
384      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
385      * Thanks to Tom Haine for testing!
386    
387    checkpoint57z_post
388    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
389      affects output (@ truncation level) of exp. plume_on_slope ; updated.
390    o fix the pickup behavior for obcs in combination with ptracers
391    o fix a bug in ptracers_external_fields_load
392    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
393      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
394    o transfered surface NH pressure to eta field (if exactConserv).
395    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
396         and update lab_sea output.txt file.
397    o completing 3-dim. relaxation code: additional term
398         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
399      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
400      * At compile time, in "EXF_OPTIONS.h" set
401          #define  ALLOW_CLIMTEMP_RELAXATION
402          #define  ALLOW_CLIMSALT_RELAXATION
403      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
404          tauThetaClimRelax3Dim = 15552000.0,
405          tauSaltClimRelax3Dim  = 15552000.0,
406      * 3 cases:
407          1) Use a constant-in-time 3-dim. field
408          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
409          3) Real-time relax. to time-evolving prescribed field
410    o Adding Laplacian-type smoothness constraint on
411      initial and boundary (forcing) controls (ic, bc)
412      * enable at compile-time via
413        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
414      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
415      * Absolute scale somewhat unclear so far
416      * no area weighting was included since no other cost term does so far
417    
418    checkpoint57y_post
419    First step for a NLFS adjoint
420    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
421    o new init. routines for calc_r_star, calc_surf_dr
422    o still need to deal with ini_masks_etc
423    o testreport seemed happy
424    checkpoint57y_pre
425    
426    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
427    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
428    o add new offset feature to offline pkg (plus minor cleanup)
429    o cfc fixes for final year of integration
430    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
431      be in GCHEM_OPTIONS).
432    
433    checkpoint57x_post
434    o fix testreport Pb in multiple test experiment.
435    o cleanup our namelist syntax in verification:
436      - make it more F95 standards compliant (some work still needed)
437      - allows the vast majority of our tests to work with gfortran
438    o Non-Hydrostatic:
439     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
440     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
441    o Allow to apply AB on T,S rather than on AB(gT,gS):
442     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
443     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
444       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
445     - need a "clever" read_pickup to restart from the other AB formulation
446    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
447    o remove some unused variables (reduces number of compiler warnings)
448    o adjoint
449      * Disable useVariableViscosity for adjoint for time being
450        (there are a number of extensive recomputations)
451      * Initialize certain variables needed for adjoint
452    
453    checkpoint57w_post
454    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
455                 fix the singleCpuIO RS version of MDSWRITEFIELD
456       and add a WARNING if using globalFiles=T with multi-processors.
457    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
458      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
459    o tracer advection scheme:
460      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
461       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
462       was not very convenient).
463      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
464       (further tests needed for the implicit DST & Flux-Limiter schemes).
465    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
466      and sRef for convenience, handy, when you want to initialize
467      ptracers in a large domain with a constant non-zero value. Also,
468      untangle ptracers_init.F a little.
469    
470    checkpoint57v_post
471    o change dome exp. to use variable viscosity in side-drag terms.
472    o remove all the files from the cfc_offline test since they are now
473      incorporated into tutorial_cfc_offline which has been producing
474      identical results for a few days of testing
475    o add new parameter: sideDragFactor to enable half-slip-side BC
476      and change side-drag S/R to use viscosity from mom_calc_visc
477      (can switch back by setting sideDragFactor=0.); affects results at
478      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
479       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
480    o vorticity & strain are now computed without masking, to account for
481      no-slip-side BC in variable viscosity calculation ; mask is applied
482      anyway later on, before computing advection/coriolis terms.
483    o modify exp4 to test new obcs support for reading from external files
484      and for passive tracers
485    o fix behavior of ptracers_monitor when monitor output is written to a
486      netcdf-file; still not independent of monitor.F (writes in the same
487      file).
488    o change default value of tRef (put a uniform, meaningful value for ocean
489      & atmos) and initialize sRef (was missing, as Martin mentioned).
490    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
491      to be proportional to enstrophy dissipation length.  Thus,
492       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
493      This is now consistent with Smagorinsky and with the manual.
494    
495    checkpoint57u_post
496    o OBCS and PTRACERS: add open boundary support for passive tracers
497      - either use homogenous (pseudo) v.Neumann conditions or prescribe
498        OB-values from file; this is not different from the way theta and salinity
499        are treated
500      - however, Orlanski-radiation conditions are not supported, and the model
501        will stop if you use pTracers and Orlanski at the same time.
502      - beefed up the rountine obcs_external_fields_load: now only those open
503        boundary values are overwritten with values from files for which there
504        are really files, otherwise the OB-fields remain untouched. This makes
505        it possible to use different OBs at different ends of the domain (as
506        with EXF)
507    o reduce number of exch calls in shap_filt (s2).
508    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
509      truncation level) 4/5 MLAdjust test results (11&12 digits match).
510    
511    checkpoint57t_post
512    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
513    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
514      same truncation, independent of the face number: affects affects several
515      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
516    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
517      note that biharmonic viscosity + no-slip was not tested in any experiment.
518    o fix bug in non-linear free-surf side-drag ; generate new output for
519      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
520    o make mnc honor the writeBinaryPrec flag for most kinds of output
521    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
522    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
523      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
524    o add brackets in multi-terms sum to get same truncation, independent of
525      the face number (manage to get exactly same value of gU,gV at the cs-edge)
526      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
527    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
528      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
529      a maximum grid-scale Reynolds number.  Also, changes all length calculations
530      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
531      Suggested values of viscosity parameters found in mom_calc_visc.
532      Many new viscosity diagnostics available.
533    
534    checkpoint57s_post
535    o Add clearing-house for viscosity calculations, mom_calc_visc and
536      correct numerous bugs in LeithD and Smagorinsky discretizations.  
537      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
538      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
539      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
540      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
541      The Strain-Tension form is now called with useStrainTensonVisc=.true.
542      ViscAhStrain and viscAhTension are now retired.
543    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
544    o In response to JMC's bug report, genmake2 now ignores any soft-links
545      that it finds in the *current* directory when searching for files.
546      Soft-links found in any other source directories will still work as
547      they did before.
548    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
549      a C routine to unlimit the stack size
550    o mnc-ify pkg/aim snapshot vars
551    o mnc-ify pkg/land as requested by Daniel
552    o various changes to mnc including:
553      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
554      - output can now be grouped so that all files within a group
555          change the ITER portion of their names in lock-step together
556      - can now read ("global") PER-FACE (in addition to PER-TILE) files
557          and works with both EXCH1 and EXCH2 (but needs more testing)
558      - writing works for all verification test cases w/ g77 on Linux
559    
560    checkpoint57r_post
561    o make MNC variable initialization happen earlier
562    o add diagnostics for (almost) each term of the momentum Eq.
563    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
564    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
565    o remove MINIMAL_TAVE_OUTPUT option ;
566      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
567    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
568      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
569    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
570    o add time-dependent SST, SSS control
571    o cost terms in ecco/ modularized (new cost_generic.F)
572    o cost_averages routines are modularized (new cost_averagesgeneric.F)
573    o new infrastructure for seaice model vs. obs misfits in seaice/
574      * driver from the_main_loop.F is seaice_cost_driver.F
575      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
576      * gradient check in Exp. 6a of natl_box_adjoint/
577    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
578      (see README file)
579    
580    checkpoint57q_post
581    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
582    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
583      - bug was reported by Jean-Michel and Ian Fenty
584    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
585      update exp. cpl_aim+ocn output.
586    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
587      Needed for high-res. runs with large global files
588      to be able to limit tapelev size
589    o Changed some tests for adjoint:
590      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
591      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
592      * global_ocean.90x40x15/ back to default 3-level checkpointing
593    o Modifications to enable scripted COMMON to MODULE conversion
594      * verification/OpenAD/code/ has necessary scripts and description;
595      * converts, compiles and runs successfully;
596    
597    checkpoint57p_post
598    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
599    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
600      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
601    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
602    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
603      (was already the case for dissipation with mom_vecinv,
604       and also the case for grad.PhiHyd when staggered-timeStep)
605      This will allow to put dissipation out-off the AB time-stepping.
606     Unfortunately, affects truncation error. Update output of exp. that "fails"
607      (cg2d matching number) and leave the others for later: front_relax(10),
608      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
609      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
610    
611    checkpoint57o_post
612    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
613      (2) its ready to be documented during the 20050801 DocFest
614    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
615      for ideal_2D_oce and lab_sea on linux_ia32_g77
616    o set to #undef CTRL_SET_OLD_MAXCVARS_30
617      in global1x1_tot/code_seaice_adj to access indices 32, 33
618      (worth another tag)
619    
620    checkpoint57n_post
621    o adding precip control xx_precip 32
622    o adding swflux control xx_swflux 33
623    o Replacing 10 forcing penalty cost routines by 1 generic.
624    o Implementing partitioning in time-mean and variable adjustment
625      for atmos. state.
626    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
627    o in natl_box_adjoint:
628      * updated exp 1 to 10
629        (but does not have time-mean vs. variable split results yet)
630    o updated global1x1/*_seaice_adj/
631      to incorporate latest changes
632    o enable useSingleCpuIO for mdsio vector routines
633      (applies in particular to tapelev I/O)
634    o removed inefficient K-loop in all active_file*control*.F
635    
636    checkpoint57m_post
637    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
638      and advect_cs (use EXCH-2 and standard cs-32 grid files).
639    o pkg/exch2: filling of face-corner halo regions is optional
640      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
641    
642    checkpoint57l_post
643     tag before updating tutorials (pre-release-2)
644    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
645       for output and interpolation of input fields onto model grid)
646    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
647       Affects results of exp. rotating_tank ; update output.txt.
648    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
649          and taking the square quantity and/or using a fraction-weight field.
650    o fix aim_diagnostics_init.F mate numbers.
651    o add mnc output capability to diagnostics/diagstat and update
652      our cvsignore files for the ACSII output generated
653    
654    checkpoint57k_post
655    o lab_sea now uses diagnostics package and provides a suite of
656      new EXF diagnostics output.
657    
658    checkpoint57j_post
659    o exf
660      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
661        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
662        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
663      * extended diagnostics output
664        - now includes all EXF variables
665        - hs, hl moved to common block
666        - separate S/R for diagnostics, called after ctrl vector is added
667        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
668        - EXFqnet contains true Qnet (i.e. includes qsw)
669      * updated verif. lab_sea, global_with_exf
670      * Rearranging hflux (exf_mapfields -> exf_getforcing)
671        to ensure that diagnostics sees a true EXFqnet
672    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
673    o diagnostics pkg: change pointers so that 1 diagnostic can be used
674      several times with different frequencies.
675    o mnc-ify the thsice package as requested by Daniel Enderton
676      - the monitor--MNC output needs work
677      - many attributes need to be added (most are currently blank)
678    o mnc-ify theaim_v23 package as requested by Daniel Enderton
679      - many attributes need to be added (most are currently blank)
680    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
681    o add Sadourny like discretization to the 4th.O vorticity advection scheme
682    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
683      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
684         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
685    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
686     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
687    
688    checkpoint57i_post
689    o Diagnostics package was changed: diagnostic allocation is now deactivated
690      by setting an empty file name in the namelist (used to be by setting 0 frequency)
691    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
692      add 1rst Order upwind vertical Shear.
693    o add a quick fix for A/B checkpointing in OFFLINE mode
694    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
695      end-run around the C/Fortran linking horror in eesup/src/timers.F
696    o added pkg/runclock: allows user to terminate run based on wall clock
697    o added non-hydrostatic scaling parameter: nh_am2
698    o pkg/my82: futile attempt to make results compiler-independent by adding
699      some "_d 0", etc. no effect.
700    o for mnc output, fill the 'T' coordinate var with myTime and create a
701      separate 'iter' variable for iteration count
702    o pkg/diagnostics:
703      add new capability: output of Global/Regional & per-level statistics ;
704      tested against monitor output (including land & thSIce) on various exp.
705    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
706    
707    checkpoint57h_done
708      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
709      data.diagnostics, data.gchem, data.ptracers) is done.
710    
711    o pkg/diagnostics: prepare for Global/Regional statistics.
712      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
713    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
714      and rename it: DIFFERENT_MULTIPLE
715    
716    checkpoint57h_post
717    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
718    o pkg/diagnostics: change output frequency, now in seconds (instead
719      of Nb of iterations). This requires to change data.diagnostics.
720    checkpoint57h_pre
721    
722    o in mnc, let the user create the output dir if both mnc_outdir_date
723      and mnc_outdir_num are false
724    o add fflags() to pkg/diagnostics which allows one to specify, on a
725      per-file basis, the file precision [default behavior is unchanged]
726    o added diagnostics to pkg/kpp, including computation of mixed layer
727      depth based on a temperature/density criterion
728    o updated verification/natl_box to test the new pkg/kpp diagnostics
729    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
730    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
731    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
732      not mnc -- this mistake was found by JMC and is now corrected
733    
734    checkpoint57g_post
735    o add Adams-Bashforth 3rd Order time stepping:
736      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
737      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
738    checkpoint57g_pre
739    
740    o make lambda[Theta,Salt]ClimRelax spatially varying
741      (default remains spatially uniform constant based on tau)
742    o added new control variables
743      * init. uVel, vVel, etanN
744      * lambda[Theta,Salt]ClimRelax
745    o separate masks used for ctrl_pack/unpack 'from write_grid' output
746      (suggested by G. Forget)
747    
748    checkpoint57f_post
749    o add parameter "baseTime" = model base time = time at iteration zero
750      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
751      account for baseTime shift
752    o move Coriolis arrays from PARAMS.h to GRID.h
753    checkpoint57f_pre
754    
755    o mnc-ifying the seaice package
756    o introduced an alternative length scale calculation for use in the limiting
757      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
758    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
759    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
760      as well as grad(vort3).  Made it compatible with both approximate form
761      for the cubed sphere and full form of these gradients.  Added flag
762      useFullLeith to select between approximate and full form.  
763    o add "d0" in getcon.F to reduce differences between compilers/platforms
764      update output.txt of exp. fizhi-gridalt-hs
765    o change port_rand funtion to allow to set the seed.
766    o fix obscure MNC bug involving conversion between reals and integers
767      - it caused no problems with certain (eg. gcc, ifc) compilers but the
768        new version is now more standards-compliant
769    o adjoint-related modifications
770      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
771      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
772      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
773    
774    checkpoint57e_post
775    o Adding eddy stress controls a la Ferreira et al.
776    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
777    
778    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
779      update output.txt of exp. fizhi-gridalt-hs
780    o add more "Z" dimensions and associated coordinate vars to MNC
781    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
782    o parameter calendarDumps: when set, approximate months (30-31 days) and years
783      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
784      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
785      months and years.  Requires pkg/cal.
786    o diagnostics: add pickup functionality
787      - off by default for backwards compatibility
788      - current version only uses MDSIO -- MNC will be added
789    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
790    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
791    
792    checkpoint57d_post
793    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
794    o modify verification/ideal_2D_oce so that it tests the creation of mnc
795      output from the diagnostics package
796    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
797    o make genmake2 more portable by using ".$FS" instead of ".f" for more
798      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
799    o add coordinate variables to the MNC output from the diagnostics package
800    o change MNC-flags default value: true when useMNC=TRUE
801    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
802      the ability (off by default) to read the grid information using MNC
803    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
804    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
805    o do snap-shot diagnostics at the middle of the time-interval (instead of
806      at the end).
807    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
808      new test for AIM with thSIce + slab-ocean
809    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
810    o move state variable diagnostics to the beginning of the time step ;
811      (note: still needs some work specially for snap-shot diagnostics)
812      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
813    
814    checkpoint57c_post
815    o Change testing option (-ieee) to get closer agreement between g77 & ifort
816    o generate new output.txt files on faulks with g77 & the new -ieee option
817    checkpoint57c_pre
818    
819    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
820      update output.txt of exp. global_ocean.90x40x15
821    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
822      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
823    o add saltFlux(+File) forcing capability with periodicExternalForcing
824    o allow to use pkg diagnostics for GM-Redi & ThSIce output
825    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
826    o improvements for the MNC output from DIAGNOSTICS:
827      - correct handling of the unlimitied dimension
828      - all dims now have associated coordinate variables
829      - variables located at U, V, and Corner ("Z") points are now written
830        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
831        *all* data points are output
832    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
833    o added pkg/seaice/seaice_monitor.F
834    o mdsio_readfield.F can now read files visible only to master MPI process.
835    o pkg/seaice: some test code for ice-modified ocean stress
836    o exf_getffields interpolation defaults to bilinear for all scalar forcing
837      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
838      spurious negative numbers for precipitation and humidity.  Will cause
839      some small numerical differences for integrations using pkg/exf/exf_interp.F.
840    o pkg/ctrl/
841      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
842        May be enabled via doPackDiag
843      *  introduce z-scaling of
844         + gradient (doZscalePack) and
845         + control (doZscaleUnpack)
846    o pkg/mdsio/
847      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
848      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
849    
850    checkpoint57b_post
851    o simplify options in diagnostics_fill arguments (remove weird combinations)
852    o fix MNC coordinate variables so that they now contain per-face index
853      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
854      general, EXCH2 grids are only aligned to a "local" coordinate system
855    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
856    o Implement instantaneous output within pkg diagnostics:
857      setting a negative frequency in data.diagnostics produces
858     "snap-shot" output (as opposed to time-average if freq > 0)
859    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
860      NOTE: change ptracer diagnostics name: use 2 characters to work with
861            more than 9 tracers. Add also diagnostics of advect & diffus flux.
862    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
863      becomes the coordinate variable for the 'T' dimension
864    o add CF-style coordinate variables to MNC
865      - just a first cut:  numbers are meaningless on the cubesphere and
866        missing along the T axis but otherwise it works!
867    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
868    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
869    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
870      this is based directly on what the model compute, so that the content of
871      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
872    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
873    o clean up build options files for SunOS, in particular
874      - remove -traditional from xmakedepend
875      - change -xarch=v9 to -xarch=native for f77
876      - restore use of make (not gmake)
877      - add CC=gcc if using g77
878    o changes per discussion of AM, JMC, & EH3 today:
879      - move redundant "grid" variables out of "state" -- in preparation of
880        creating proper CF-style coordinate variables and in recognition
881        that any/all grid variables can be easily copied (eg. w/NCO) from
882        the grid files into any of the other NetCDF files
883      - *always* output grid variables with MDSIO (this will eventually be
884        changed)
885      - output MNC grid file if useMNC is true
886    o every instance of _END_MASTER() has been found and replaced with
887      _END_MASTER( myThid ) in order to satisfy certain picky Sun
888      preprocessors
889    o re-arrange diagnostics pkg initialisation:
890     - allow each package to extend the available diagnostics list
891     - add some checking and fix small problems (multi-threaded, ...)
892     - new S/R diagnostics_fill (replace fill_diagnostics):
893       look through the short list of active diag. (instead of the long list)
894       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
895    
896    checkpoint57a_post
897    o this set of changes restores TAMC compatibility
898      tested for global_ocean.90x40x15 adjoint on trough
899      (what a pain)
900    
901    checkpoint57a_pre
902    o some modifs in tools/build_options for sunos
903    o call ctrl_pack for ctrl at end for optimcycle=0
904    
905    checkpoint57
906    o add horizontal bi-harmonic viscosity for vertical velocity
907      - new parameter viscA4W (defaults to viscA4)
908      - affects only non-hydrostatic code
909      - to be done: no-slip lateral boundary conditions
910    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
911    o implement Implicit Vertical advection for pTracers
912    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
913      (implemented also for implicit vertical diffusion & advection)
914    o OBCS: extend application of tracer open boundary conditions
915      to a strip beyond the boundary of width Olx/Oly
916    o add call monitor to TAF set of required calls (flow directives)
917      and include in natl_box_adjoint
918    o untangle a few ifdefs related to cost, ctrl, autodiff
919      untangel a few ALLOW_ECCO_OPTIMIZATION
920    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
921      (theta2, salt2 in ecco_cost_weights)
922    
923    checkpoint56c_post
924    o OBCS as control variables
925      - update ctrl_ad_diff.list, obcs_ad_diff.list
926      - remove balance of obcs controls from default
927      - fix index bug nobcs in ctrl_init
928      - fix dummy fields filen in ctrl_pack
929      - add dummy weights for obcs
930    o lsopt: comment out fort.94 output
931    o optim:
932      - remove unnecessary header files
933      - adjusted namelists
934      - add xerbla.F to Makefile
935    o exf:
936      - multiple modifications of exf_check_range
937      - unit change in exf_init_runoff from [m/year] to [m/s]
938    o mdsio:
939      - i/o-vector change debugLevel from debLevA to debLevB
940    
941    checkpoint56b_post
942    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
943      is called from DO_THE_MODEL_IO
944      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
945      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
946      - clean up PTRACERS_WRITE_TIMEAVE a little
947    o add another verification experiment that tests both the cfc-pkg and
948      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
949      reactive tendencies treated inline with regular timestepping
950    o testreport previously did a lousy job of comparing small numbers, so
951      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
952      implemented in the little c-progam tmp_cmpnum.c which is embedded in
953      testreport.
954    o ptracers_monitor: bug fix for MPI
955    
956    checkpoint56a_post
957    o GCHEM: finish reorganizating the package
958      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
959        (introduces another 3D-array for each passive tracer, but only if
960        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
961        gchemTendency is not needed because the timestep is done separately)
962      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
963      - GCHEM is now---more or less cleanly---separate from PTRACERS
964      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
965        so clear to me how that should be done in a general way.
966    o CFC: improve formatting of output in CFC_ATMOS
967    o PTRACERS:
968      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
969        that ALL experiments with ptracers enable can be checked. This makes
970        GCHEM_MONITOR obsolete.
971      - include a runtime parameter PTRACERS_monitorFreq that defaults to
972        monitorFreq
973      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
974    o add PTRACERS (PTR0[1-5]) to testreport output
975    o exf_check_range:
976      * default changed to .TRUE.
977      * will check values for niter0 if debLevA, every timestep if debLevB
978      * STOP in exf_check_range if 'out of range'
979      * range chosen generous to allow for potential extema
980      TBD: a version with stricter range
981           permitted range would be runtime parameters
982    o GMredi:
983      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
984      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
985      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
986    o GCHEM:
987      - move call to GCHEM_FORCING_SEP, so that it is now called before
988        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
989      - introduced a useGCHEM runtime flag and applied it everywhere.
990      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
991        this flag is now only visible within GCHEM-pkg routines.
992      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
993        be replaced by a 3D array that is computed before thermodynamics; for
994        this, the tracer ID iTracer had to be included into the parameter list
995        of ptracers_forcing
996      - set up forward_step to call gchem_forcing, that will replace
997        gchem_forcing_int in ptracers_forcing
998      - cleaning up
999    o small cleaning of exch2: remove files that are also in eesupp/src
1000    
1001    checkpoint56
1002    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1003    o mnc: cleanup "full" files--fixes out-of-memory problem
1004    o ECCO-GODAE
1005      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1006      * fully merged and updated from SIO code
1007        windstress sign change affects
1008        - exf_inscal_[u/v]stress
1009        - sign of xx_tau[u/v] adjustments
1010        - signs in cost_scat
1011      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1012      * natl_box_adjoint updated and compressed
1013      * 2-level checkpoint switch added
1014        (tested in EXP. 1 of natl_box_adjoint)
1015      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1016    o SVD
1017      * first complete, non-hacked version for SVD calculations
1018      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1019        performed via direct access files admtlm_vector.it????
1020        (via ctrl_[un]pack)
1021      * optimcycle is used for ARPACK iteration counter
1022        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1023      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1024        and add linear transforms where necessary
1025      * controls are initial/final SST, SSS (can be extended; need to check
1026        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1027    o mdsio: filename info to both stderr, stdout
1028    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1029      from sign change
1030    
1031    checkpoint55j_post
1032    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1033      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1034    o add consistent build directories and .cvsignore files to verification
1035    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1036    o make all subroutines 30 or less characters in length for certain older
1037      compilers to work (a thorough search only turns up two routines in
1038      pkg/ptracers)
1039    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1040      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1041    
1042    checkpoint55i_post
1043    o change arrays for total vertical diffusivity (2.D if explicit,
1044      3.D if implicit) ; each ptracer uses its own background value.
1045    o added mnc/NetCDF output capability to ocn_compon_interf
1046      - added bits to verification/cpl_aim+ocn so that it can run on
1047        ITRDA and other clusters without the mpirun "-wd" option
1048    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1049      configuration
1050    o give MNC the ability to create additional files rather than
1051      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1052      - the default is just less than 2GB which is a practical limit
1053        on many systems
1054    o Compute the non-local term using either KPP vertical diffusivity (=default)
1055       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1056    
1057    checkpoint55h_post
1058    o add verification test "vermix"
1059    o remove all the *_ioinc flags and replace with the single global
1060      outputTypesInclusive flag
1061    o allow to set a vertical profile of vertical diffusivity for T & S
1062    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1063    o useMNC moved from data.mnc to data.pkg
1064    
1065    checkpoint55g_post
1066    o Renaming carbon AD experiments to comply with testreport conventions
1067    o Updating adjoint of Held-Suarez hs94.1x64x5
1068    o Fixing directives for non-ECCO forward_step, after ECCO directives
1069      have been fixed to avoid recomp. of do_oceanic_phys
1070      Works well for global_ocean.90x40x15,
1071      but recomp. issue remains for carbon
1072    o Updating adjoint output for natl_box_adjoint after
1073      pkg/ecco has been modified (see taga c55d_post)
1074    
1075    checkpoint55f_post
1076    o rename to timeave_init_fixed
1077    
1078    checkpoint55e_post
1079    o some delicate re-shuffle of store directives to avoid one
1080      extra call of do_oceanic_physics
1081      affects ecco_the_main_loop.F, do_oceanic_physics.F
1082      checkpoint_lev1_directives.h
1083    o NB: this may break global_ocean adjoint temporarily,
1084      but it is clear how to fix it. Will do later, need this now.
1085    
1086    checkpoint55d_post
1087    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1088    o ecco_cost_weights is modified to 1x1 runs
1089    o modifs to allow observations to be read in as
1090      single file or yearly files
1091    o enable to read exf forcing fields as either
1092      single file or yearly files (flag useExfYearlyFields)
1093    checkpoint55d_pre
1094    
1095    o switch between 2-level and 3-level checkpointing
1096    o add ability of MNC to write local and "partial" (eg. 2D slices where
1097      the full 3D field is never actually stored) arrays to NetCDF files
1098      with the correct (that is, the complete multi-dimensional) set of
1099      array indicies
1100      - used in mom_vecinv() to write the diagFreq output
1101      - tested (demonstrated) in verification/aim.5l_cs
1102    o further mnc-ification
1103      - add verification/lab_sea to the list with mnc setups
1104      - fix undefined mnc v-names in cd_code
1105      - add kpp to mnc output (both snapshot and timeave)
1106    o non-hydrostatic code
1107      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1108        in calc_gw.F
1109      - defaults to viscAh
1110      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1111        friction or Leith) in non-hydrostatic mode, as long as there is
1112        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1113    o pkg/cost
1114      extend simple cost functions to treat time mean quantities
1115      (T,U,V) via cost_accumulate_state from cost_tile
1116    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1117        be 2 times larger than the minimum size the advection scheme requires.
1118        now get a perfect conservation of salt in advect_cs test-exp (updated)
1119    o GGL90 (Gaspar's TKE mixed layer)
1120      - add horizontal diffusion of TKE, requires exchanges in
1121        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1122        default. In OPA there is no horizontal diffusion of TKE but the
1123        mixing coefficients are computed from a horizontal average of TKE of
1124        6 points or so. I think that diffusion has a little more physical
1125        justification.
1126      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1127        was in vain)
1128      - mask tke-variable in ggl90_init
1129    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1130    o fix biharmonic diffusion on CS-grid.
1131    o more obcs stuff
1132      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1133        for reading boundary values. This routine is called from
1134        obcs_prescribe_read
1135      - updated obcs_check
1136      - changed sponge layer relaxation parameter units for days to seconds
1137      - turned off sponge layer by default
1138      - changed argument list of OBCS_CALC to myTime+deltaTclock
1139      - fixed about 35 bugs in obcs_external_fields_load
1140    
1141    checkpoint55c_post
1142    o obcs stuff
1143      - new runtime flags useOBCSprescribe, useOBCSbalance
1144      - re-arranged obcs_calc
1145      - moved exf_getobcs to obcs_prescibe_read
1146        obcs_prescibe_read is called after ORLANSKI stuff
1147        and independent of it (executable can contain all).
1148      - updated obcs_check
1149      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1150        These may be necessary only if tangential velocities are
1151        prescribed at OB, not sure, needs testing.
1152    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1153      which simplifies the calls and passes the ifc check-bounds test
1154    
1155    checkpoint55b_post
1156    o add a 2D scalar, Z location, exchange_2 routine.
1157    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1158      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1159      affects advect_cs results (for the wrong reason): update output.txt
1160    o use a more standard discretization for biharmonic viscosity ;
1161     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1162      affects results of dome set-up: update output.txt
1163    o fix gad_advection.F (CubedSphere part), back to version 1.23
1164    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1165    
1166    checkpoint55a_post
1167    o merged code to
1168      * prescribe/read time-dependent open boundaries
1169        (works in conjunction with exf, cal)
1170      * sponge layer code for open boundaries
1171      * each boundary N/S/E/W now has its own CPP option
1172        (healthy for the adjoint)
1173    
1174    checkpoint55
1175    o up-to-date adjoint of previous breaks
1176      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1177      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1178      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1179      - carbon: * remove tr1-related adjoint verification
1180                * add ptracer as control variable
1181    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1182      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1183    
1184    checkpoint54f_post
1185    o in verification/carbin/ remove experiment related to
1186      ALLOW_PASSIVE_TRACER (array tr1 etc)
1187      code_ad/ input_ad/ results_ad
1188    
1189    o add two new packages
1190      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1191        + subject to optimization (memory)
1192      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1193        + subject to reordering (many GOTOs in the original code)
1194        + so far opps is called for every (i,j) point, and then operates in
1195          the vertical; one may want to reorder the scheme in order operate in
1196          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1197          fields)
1198    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1199      - all verification tests compile and run with linux_ia32_g77
1200      - defaults are compatible with current input files--nothing
1201        should change if you were not previously using MNC
1202      - MNC output has been added in numerous places (eg. timeave)
1203        but there are still a few writes not yet do-able with MNC
1204        (this is in progress)
1205      - flags now allow for either/or/both use of MDSIO and MNC and
1206        documentation will soon follow
1207      - numerous small formatting cleanups for ProTeX
1208    o add version info (via BUILD_INFO.h) to MNC and stdout
1209    
1210    checkpoint54e_post
1211    o add two new packages
1212      - pp81 (Packanowski and Philander, 1981), Richardson number and
1213        stratification dependent mixing
1214      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1215      - these scheme operate in a similar manner as KPP (without ghat, of
1216        course), however there is only one diffusivity that is used for both
1217        temperature and salinity (and passive tracers)ç
1218    o add offline package
1219    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1220      provided by Stephanie Dutkiewicz
1221    o genmake2: add ability to search for C compilers and cleanup test output
1222      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1223    
1224    checkpoint54d_post
1225    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1226    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1227      leading to additional shift by 5 days each year of integration
1228       (i.e. leading to considerable offset over the years)
1229    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1230    o start with no AB and no initial filtering (staggerTimeStep):
1231      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1232    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1233      (external loading & cpl import/export stay in forward_step.F)
1234    o update coupling interface to work with new staggerTimeStep
1235    o change MDSIO ptracers_pickup.
1236    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1237    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1238    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1239    
1240    checkpoint54c_post
1241    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1242      this affects (truncation error) output.txt of test-exp:
1243       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1244    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1245    o change Qnet to always be the net heat flux, (+upward).
1246      affects (truncation error) output of natl_box exp.: updated
1247    o define the max number of passive tracers in PTRACERS_SIZE.h
1248    o start to test mnc routinely in exp0
1249    o add sea-ice loading (sIceLoad) as a new forcing field.
1250    
1251    checkpoint54b_post
1252    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1253       impressive on Altix and Opteron systems)
1254    o diagnostics can now write NetCDF files through the mnc package
1255    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1256    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1257    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1258      affects (truncation error) output of lab_sea & natl_box exp.: updated
1259    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1260    
1261    checkpoint54a_post
1262    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1263    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1264    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1265    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1266      + internal_wave (shift in writing cg2d_ini_res)
1267    checkpoint54a_pre
1268    
1269    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1270      - modified verification/lab_sea and natl_box_adjoint accordingly
1271    
1272    checkpoint54
1273    checkpoint53g_post
1274    o prepare splitting of thermodynamics: store convect.counter in common block
1275    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1276      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1277    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1278    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1279    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1280    o restore adjointability
1281    
1282    checkpoint53f_post
1283    o modifications that affect AIM experiment results (update output.txt):
1284      - no advection of S at top interface Nr (pkg/generic_advdiff)
1285      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1286    o AIM pkg:
1287      - include stability function into surf.Flux derivative relative to Tsurf
1288      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1289    
1290    checkpoint53e_post
1291    o merged cylindrical coord configuration
1292    o added rotating_tank experiment
1293    checkpoint53e_pre
1294    
1295    checkpoint53d_post
1296    o faulks upgraded: re-generate output.txt that have changed:
1297       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1298    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1299    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1300    o added Sadourny discretization of Coriolis
1301      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1302      - re-enabled use of omega3 (useAbsVorticity)
1303    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1304      vector-invariant equations
1305      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1306    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1307      hopefully without new bugs
1308      - still to do: biharmonic friction for non-hydrostatic w
1309    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1310    o regenerated output for global_ocean_ebm (using -ieee)
1311    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1312      of mom_common/
1313      - simple re-arrangement of instructions within computing loop
1314    checkpoint53d_pre
1315    
1316    checkpoint53c_post
1317    o new version of coupler for AIM+thSIce and Ocean models
1318     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1319     - land: change Evaporation of snow
1320     - aim with thSIce: fix bug in snow-precip.
1321    o changes to calc_gw.F
1322     - bug fix for w^2 term near the bottom boundary
1323     - (hopefully) improve the lateral slip boundary condtions for use with
1324        partial/looped cells
1325      - because the bug fix changes two verification experiments anyway (exp5
1326        and plume on slope), change the lateral boundary condition from half slip
1327        to the value of no_slip_sides
1328    o ebm package wasnt quite up to the parallel task. Fixed that.
1329    o Adjoint of EBM package + verification
1330      * TLM OK
1331      * ADM not sufficient accuracy yet (needs further testing)
1332    
1333    checkpoint53b_post
1334    o Commiting new energy balance model to repository
1335      * package is pkg/ebm
1336      * verif. is verification/global_ocean_ebm
1337      * references are in ebm_driver.F
1338    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1339    C        Global thermohaline circulation. Part I:
1340    C        Sensitivity to atmospheric moisture transport.
1341    C        J. Climate 12(1), 71-82
1342    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1343    C        Global thermohaline circulation. Part II:
1344    C        Sensitivity with interactive transport.
1345    C        J. Climate 12(1), 83-91
1346    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1347    C        Destabilization of the thermohaline circulation
1348    C        by atmospheric eddy transports.
1349    C        J. Climate 7(12), 1870-1882
1350    o Will need long integration testing.
1351    checkpoint53b_pre
1352    
1353    o created pkg/mom_common in preparation for variable viscosity code
1354    o renamed and split ini_mnc_io
1355    o pkg/land: only liquid water can diffuse or run-off
1356    o AIM using land: soil wetness availability account for snow
1357    o added printMapIncludesZeros to EEPARMS namelist
1358    
1359    checkpoint53a_post
1360    o restore TAMC compatiility for exf_constants.h
1361      (no usage of _d in .h)
1362    o Additional storing in KPP in an attempt to fix
1363      TAMC problem with adjoint of KPP code.
1364      (no success...)
1365      Identical code works fine with TAF.
1366    o Fixed verification/natl_box_adjoint experiments.
1367      Initial conditions for Experiments 4 and 5 are now
1368      set to "SEAICE_initialHEFF=0", which is more reasonable,
1369      and hence gives results closer to that of Experiment 2.
1370      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1371    
1372    checkpoint53
1373    o stable checkpoint with up to date adjoint
1374      TLM tests only run for 1st grdchk at the moment. Its unclear if
1375      this is a code problem or a problem with resetting code for g_
1376      variables that is being autogenerated wrong.
1377      Otherwise:
1378       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1379       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1380         are both still in chaos following their security messes.
1381    
1382    checkpoint52n_post
1383    o various build (mostly genmake2) changes including:
1384      - ability to build/run more easily within Cygwin and MacOS X
1385      - more complicated Makefiles with a stronger dependence on Gnu Make
1386    o pkg/seaice modifications
1387      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1388        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1389        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1390      - changed proxy for geostrophic velocity and updated
1391        verification/lab_sea/results/* accordingly
1392      - removed ADI dynamic solver from pkg/seaice
1393      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1394        they caused a segmentation fault under certain circumstances
1395      - removed unused field WATR
1396    o bug fix in exf-package:
1397      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1398         now reflect that.
1399    o small fixes in the cal-package:
1400      - set reference date to first of January for the 'model'-calendar
1401      - failing of cal_CheckDate in cal_FullDate now actually results in a
1402        warning
1403    o small modifications in exf-package to increase flexibility:
1404      - change climtempfreeze from a constant to a runtime parameter that
1405        is specified in data.exf_clim (default = -1.9)
1406      - introduce runtime parameter windstressmax (default = 2.0) that is
1407        specified in data.exf
1408    o fix in pkg/thsice:
1409      - update Evap (Tsf changes) to be consistent with Latent heat flux
1410      - maintain snow precipitation unchanged (even if Tsf >=0).
1411     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1412    
1413    checkpoint52m_post
1414    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1415      this does not change any of the results, because myIter=0 in swfrac always
1416      lead to jwtype=2 (the default anyway), but the call makes little sense
1417      as a default
1418    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1419    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1420      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1421    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1422    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1423    o extending useSingleCpuIO option to work with new exch2 I/O format
1424      - old-style, missing-tile I/O is still accessible by defining CPP
1425        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1426    o monitor package can write to NetCDF files and/or STDOUT
1427    o fix re-definition bug in MNC_GRID_INIT_ALL()
1428    o doc/api_reference added
1429      - a framework for building an API Reference Manual using all
1430        the "protex" comments embedded in the code
1431      - see pkg/generic_advdiff, pkg/mnc for examples
1432    o MNC:
1433      - make myThid the last argument for all subroutines
1434      - new default for the grid files: NO halos
1435      - add useMNC and other run-time flags
1436      - separate per-file-group handling of the unlimited dimension
1437      - early initialization of MNC w/ flags read at the eeboot stage
1438        and lookup tables set in initialize_fixed
1439      - write all MNC output to a freshly-created directory
1440    o thermodynamics sea-ice (thsice) is now tested with testreport.
1441    o test exp. advect_cs: use the standard cs32 grid ; update output.
1442    o Added functionality to grdchk:
1443      pick global i,j,k position (or nearest wet) where to perform check.
1444    
1445    checkpoint52l_post
1446    o new land formulation:
1447      a) use ground enthalpy as prognostic variable to ensure exact
1448         energy conservation.
1449      b) account for water temperature and for latent heat of freezing
1450         in all processes (rain, run-off, ground storage)
1451      c) compute surface and ground temperature implicitly.
1452    o aim_v23 modification for new land model:
1453      a) Treat separately land / ocean / sea-ice surface fluxes
1454         to allow implicit computation of land & sea-ice surface temp.
1455      b) add snow precipitation.
1456    checkpoint52l_pre
1457    
1458    o fix problem (when 1 tile is empty) in min/max monitor.
1459    o fix bug in timeAve (u,vZetatave in common block)
1460    o no restoring terms under ice for pkg/seaice
1461    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1462    o bug fix for pkg/seaice pickups
1463    o change MNC call locations and add coordinate attributes
1464    o mask vorticity at the corner ; affects global_ocean.cs output
1465    o fix ini_curvilinear_grid ; test CS experiments with mpi
1466    o aim.5l_cs: modify sea-ice fraction input file ; update output
1467    o exf: Adding simple range check routine for exf fields after read
1468    
1469    checkpoint52k_post
1470    o removed top-level directory "diags"
1471      - we migrated these functions to pkg/timeave a long time ago
1472    o fixed bug introduced in pkg/monitor
1473    o accuracy ctrlprec = 32 insuffient for gradient checks using
1474      averaged fields (I/O via cost_averages)
1475      -> use ctrl.h in active_file*.F to control I/O precision.
1476    o paramter list of CALL ADTHE_MAIN_LOOP
1477    o added initial do_the_model_io to ecco
1478    o set all ...Freq to zero after cost_final
1479      taveFreq, dumpFreq, pChkptFreq
1480    o MAIN and ECCO differentiability restored
1481    
1482    checkpoint52j_post
1483    o fix nchklev in tamc.h for global_ocean...
1484    o Bringing flow and store directives up-to-date
1485    o Really weird thing!
1486      call do_the_model_io from the_main_loop with parameters
1487      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1488      TAF places a faulty re-call of initialise_varia
1489      after cost_final call which should not be there!
1490    checkpoint52j_pre
1491    
1492    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1493      error messages
1494    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1495    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1496      debug output
1497    o modfied mdsio_writefield.F to handle non-global files under exch2
1498    o update AIM Cubed-Sphere exp (aim.5l_cs):
1499      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1500    o update AIM Equatorial Channel exp:
1501      use standard aim_v23 pkg and change the SST fields to be more realistic.
1502    o globalFile now works with exch2
1503    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1504      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1505    o limit timeave output for hi-res integrations
1506    
1507    checkpoint52i_post
1508    o removed CPP_EEOPTIONS.h from verification/*/code
1509    o updated the tiling for global_ocean_pressure
1510    checkpoint52i_pre
1511    
1512    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1513      the old pkg/aim).
1514    
1515    checkpoint52h_pre
1516    o shortened offending lines in exch2_send_rx?.template
1517    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1518    o genmake2: add build & execute test for NetCDF code
1519    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1520      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1521    o added useSingleCPUIO flag to monitor.F and mon_out.F
1522    o added temporary hack for sea-ice dynamics on the cube:
1523      metric terms are ignored and it is assumed that
1524      there is no sea-ice on cube faces 1, 2, 4, and 5.
1525    
1526    checkpoint52f_post
1527    o added exch2 cube routines to pkg/exch2
1528    o modified hs94.cs-32x32x5 to use it
1529    o added new grid files to hs94.cs-32x32x5
1530    checkpoint52f_pre
1531    
1532    checkpoint52e_post
1533    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1534      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1535    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1536      to work with implicit vertical advection and AB ;
1537    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1538    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1539     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1540    checkpoint52e_pre
1541    
1542    o fix bug in impldiff when Nr=1 or Nr=2.
1543    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1544    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1545    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1546      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1547    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1548    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1549    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1550    
1551    checkpoint52d_post
1552    o re-tiled many expts to allow comparison in multi-processor mode
1553      - updated output accordingly
1554      - changed hs94.128x64x5 to use intial T from file rather than use the
1555        random number generator
1556    o add infrastructure in model routines for fizhi and gridalt packages
1557    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1558    o changes to permit hi-res, cubed-sphere, configuration
1559      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1560      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1561      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1562        of surface winds for the cube
1563      (A verification experiment, based on global_ocean.cs32x15, but with
1564       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1565       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1566       complete with example surface forcing files and matlab scripts to look
1567       at the output and compare it with that of global_ocean.cs32x15.)
1568    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1569       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1570       to conform to the common rule.
1571    o check-in the first version of the coupler + interfaces for multi-components
1572       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1573       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1574       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1575       - ocean and atmos. share the same horizontal grid (no interpolation).
1576       - exchanges between component and coupler is done in forward_step
1577    o new verification experiment, cpl_aim+ocn:
1578       coupled ocean - AIM atmosphere on cs32 grid.
1579    
1580    checkpoint52d_pre
1581    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1582    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1583    
1584    checkpoint52c_post
1585    o Fixing OPTIONS files for use of exf:
1586      - ALLOW_ECCO not needed
1587      - ECCO_CPPOPTIONS.h should not be included from
1588        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1589        as has been the case in the past
1590      - All cal/exf related options are currently set in
1591        single header file. Should remain so until we
1592        agree on a consistent new policy.
1593    o Removed all CPP options for cal package.
1594      cal has no more CPP options.
1595    o modified STOREs in GAD_ADVECTION
1596    o corrected key comp. for passkey
1597    
1598    checkpoint52b_post
1599    o new version: "thsice" of thermodynamic sea-ice pkg:
1600     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1601     - modify fluxes but do not change theta directly;
1602     - light cleaning of bulk_force pkg (still needed with thsice).
1603     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1604       + output_thsice.txt to test thsice & bulk_force pkgs.
1605    o put back grid & coriolis monitor output.
1606    checkpoint52b_pre
1607    
1608    o call "do_the_model_io" at the beginning (=> dump initial state)
1609    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1610    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1611      (need info on NUMBER_OF_PTRACERS)
1612    o missing PTRACERS headers in some routines
1613    o default tamc.h in pkg/autodiff supposed to crash
1614      to ensure proper customization
1615    
1616    checkpoint52a_post
1617    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1618      - moved surfaceTendencyTice from pkg/seaice to main code
1619      - subroutine FREEZE_SURFACE now limits only surface temperature
1620        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1621        => new output.txt for global_ocean.cs32x15 & global_with_exf
1622      - keep the old version of FREEZE for backward compatibility;
1623        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1624      - corresponding modifs for TAF directives
1625    o added surface flux output variables to TIMEAVE_STATVARS
1626    o time-averaged output for pkg/ptracers
1627    o fix problem with ECCO-related divided adjoint
1628      snapshot file was missing some ad-variables,
1629      but no warning issued by TAF
1630    
1631    checkpoint52a_pre
1632    o some bug fixes for #undef REAL4_IS_SLOW
1633    
1634    checkpoint52 = ecco_c52_e35
1635    o after testing adjoints of checkpoint51u_post
1636    
1637    checkpoint51u_post
1638    o this is the post-merge tag of the ecco-branch
1639      (needs another clean checkout and re-testing)
1640    o various natl_box_adjoint configs and results
1641      but no input fields
1642    o obcs adjoint not yet merged!
1643    o adding ECCO global 1x1 and 2x2 degree configs
1644    o updated/extended some store directives for seaice
1645    o pkg/ecco now containes ecco-specific part of cost function
1646    o top level routines the_main_loop, forward_step
1647      supersede those in model/src/
1648      previous input data.cost now in data.ecco
1649      (new namelist ecco_cost_nml)
1650    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1651    
1652    checkpoint51t_post
1653    o this is the pre-merge tag of the ecco-branch
1654    
1655    checkpoint51s_post
1656    o cleanup: removed various obsolete #define-s
1657    o pkg/grdchk
1658      - renamed 'ph-grd 3' to 'grad-res'
1659      - merged from ecco-branch
1660        (remaining bug fixes for obcs gradient checks)
1661      - additional high-precision output for testreport
1662        (grep for 'precision_grdchk_result')
1663    
1664    checkpoint51r_post
1665    o cleaned up or removed CPP_OPTIONS.h files
1666    o updated results for some of the tests to reflect the new
1667      optfiles (-ieee: -O0 instead of -O3)
1668    
1669    checkpoint51q_post
1670    o cd_code:
1671      - moved cd_scheme.F -> cd_code_scheme.F
1672      - separate read_checkpoint from cd_code_ini_vars.F
1673      - separated cd_code part from write_checkpoint
1674      - updated AD_SOURCE, generated .flow
1675      - added CD_CODE_VARS.h to the_main_loop
1676      - Moving cd_code specific store dir.s to pkg/cd_code
1677    o ctrl package totally restructured
1678      - pack/unpack now optional and decoupled from
1679        xx_/adxx_ I/O
1680      - ctrl_pack/unpack cleaned
1681        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1682      - confined inclusion of AD_CONFIG.h to where necessary.
1683    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1684    
1685    checkpoint51p_post
1686    o create initial cd_code package
1687      - WARNING: the initialization of fields within packages
1688        is broken because INI_FIELDS (where READ_CHECKPOINT is
1689        called) is called *before* PACKAGES_INIT_VARIABLES.
1690        This seems to be backwards since
1691        1) its important to initially zero the entire field including
1692           the "halo" region
1693        2) zeroing needs to be done *before* reading pickup info
1694           and the pickup call might or might not happen in any
1695           particular run
1696      - this needs an overhaul for R2
1697    o cleanup verification/*/code/GMREDI_OPTIONS.h
1698    o cleanup testreport
1699    
1700    checkpoint51o_post
1701    o bringing AD-related verif's up to date with genmake2
1702      - carbon/
1703      - global_ocean.90x40x15/
1704      - hs.94.1x64x5/
1705      - (front_relax/ )
1706    o (more) consistent directory structure for AD-related verif.'s
1707    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1708    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1709    o bug fix in find_alpha.F for MDJWF:
1710      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1711        change rho -> rho-rhoConst
1712      - replace call find_rho to find_rhonum
1713    o initialisation of rFlx extended to full array (required by TAF)
1714      and shifted to thermodynamics
1715    o removed PTRACERS.h in ptracers routine
1716    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1717    o Correcting initialisations for fVerU, fVerV.
1718    o helping TAF to recognize dependency on kUp for
1719      fVerU, fVerV
1720    o Replacing delZ by delR in pkg/ctrl/
1721    checkpoint51o_pre
1722    
1723    o undid all of cp51 pending some cleanups and discussion
1724    o added the [#include "AD_CONFIG.h"] statement to all files that need
1725       it for adjoint/tl #defines
1726     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1727     o removed tools/genmake since it no longer works
1728    
1729    checkpoint51n_post
1730    o modifications to make FREEZE flux visible to pkg/kpp
1731      - moved surfaceTendencyTice from pkg/seaice to main code
1732      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1733      - subroutine FREEZE now limits only surface temperature
1734        (this means new output.txt for global_ocean.90x40x15,
1735         global_ocean.cs32x15, and global_with_exf)
1736    o added surface flux output variables to TIMEAVE_STATVARS
1737    
1738    checkpoint51n_pre
1739    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1740    o added [#include "AD_CONFIG.h"] to all files that use the following
1741      defines:
1742      - ALLOW_ADJOINT_RUN
1743      - ALLOW_TANGENTLINEAR_RUN
1744      - ALLOW_ECCO_OPTIMIZATION
1745    
1746    checkpoint51m_post
1747    o incorporating changes to get TAMC/TAF working in genmake2
1748      - added new TAMC/TAF targets to the Makefile
1749      - various cleanups related to package handling
1750      - these changes should have no impact on the forward model
1751    
1752    checkpoint51l_post
1753    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1754     - faster algorithm for cal_addtime.F
1755     - higher precision arithmetic, where needed
1756     - pkg/exf *startdate variables changed from calendar date to
1757       model integration time
1758    
1759    checkpoint51l_pre
1760    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1761    o enable to apply restoring on S & T only in a latitude band.
1762    o update output (external_forcing_surf modif. change truncation errors)
1763       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1764    
1765    checkpoint51k_post
1766    o change default to: useNHMTerms=.FALSE.
1767     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1768       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1769     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1770        exp1, ideal_2D_oce
1771     - change data file of oceanic exp (leave the results unchanged for now)
1772       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1773    o set gravitySign automatically according to the vertical coordinate used
1774      (and change sign: back to "logical" value: +1 when R increases downward)
1775    o added an include barrier to the default CPP_OPTIONS.h and
1776      removed the #include "PACKAGES_CONFIG.h" from it
1777    o fix a bug in mom_fluxform (from chk51j_post)
1778    
1779    checkpoint51j_post
1780    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1781    o adjusted some flow directives (dynamics, thermodynamics)
1782    o added cubed-sphere case to test cost function
1783    o heckpoint_lev?_directives.h now include
1784      pkg-specific directives, whenever those are enabled.
1785    o Moving pkg-specific flow directives to corresponding pkg
1786      Moving pkg-specific differentiation list to corresponding pkg
1787      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1788      ---> conventions are
1789           - pkg_ad.flow
1790           - pkg_ad_diff.list
1791           - pkg_ad_check_lev?_dir.h
1792    
1793    checkpoint51i_post
1794    o merge of the branch-genmake2
1795      - knowingly breaks the older genmake
1796      - automatic generation of all ALLOW_${PKG_NAME} defines
1797      - new testreport supersedes older testscript
1798    o large number of package inclusion and header cleanups
1799    checkpoint51i_pre
1800    
1801    o new output for adjoin of global ocean vector invariant
1802    o fix for checkpoint of thermodynamic seaice and bulk_force
1803    o Steph gchem various cleanups
1804    
1805    checkpoint 51h_pre
1806    o fixed some single quotes
1807    o modify gchem pkg to be more versatile
1808    o modifications to clean up dic pkg
1809    o add pkg/cfc
1810    
1811    checkpoint51g_post
1812    o provide links for ARPACK and ADM*TLM
1813    o start removing verification/vero/
1814    o update AD-related stuff
1815      (in particular some IF-statements in model/src/ routines)
1816    o adding to verification/global_ocean.90x40x15/ adjoint of
1817      vector invariant setup
1818    
1819    checkpoint51f_post
1820    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1821    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1822      of tracer Green's fucntions for ocean inversion project.
1823    
1824    checkpoint51f_pre
1825    o Added on-the-fly spatial interpolation capability
1826        "USE_EXF_INTERPOLATION" to pkg/exf.
1827      - This is a temporary Cartesian-grid hack until
1828        the super-duper ESMF coupler becomes available.
1829      - See verification/global_with_exf/README for usage example.
1830      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1831        flags and modified pkg/seaice accordingly.
1832    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1833        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1834        non-local transport term.
1835    
1836    checkpoint51e_post
1837    o pkg/mom_vecinv:
1838      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1839      - add time-ave diagnostic of vorticity advection.
1840    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1841    o atmospheric geopotential: - include water vapor effect;
1842                                - use p^kappa in p* scaling.
1843    o land pkg: read initial state from files.
1844    o AIM : add stratospheric drag in the upper level
1845    
1846    checkpoint51d_post
1847    o change function ILNBLNK (=> last non-blank char.) to return zero
1848      (instead of the string length) when the string. char is empty
1849    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1850    o modif's to restore TAMC compatibility
1851      - avoid "_d" constructs in PARAMETER declarations
1852      - avoid interrupting lines by comment lines
1853    o Use cluster local disks for purely local I/O
1854      vs. globally visible disks needed for ctrl stuff
1855      (merged from ecco-branch)
1856      - new active_file_loc... and mdsio_..._loc routines
1857      - affected packages: autodiff, ctrl, grdchk, mdsio
1858    
1859    checkpoint51c_post
1860    o introducing integer flag debugLevel
1861      - debLevZero: suppress all output
1862      - debLevA: standard
1863      - debLevB: equivalent to current debugMode=.TRUE.
1864    o introducing pathname variable mdsioLocalDir for mdsio
1865      that can be specified at runtime
1866      (relevant for cluster I/O to local disk)
1867    `
1868    >>>checkpoint51b_post
1869    adjoint of ptracers
1870    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1871    o extended state in checkpoint_lev?, etc.
1872    o alternative ctrl/cost with tr1 or ptracer
1873    o new comlev1_bibj_ptracers
1874    o new ptracers.flow
1875    o made ptracers_forcing same as external_forcing_s
1876    o added verification for adjoint with ptracers
1877      - adm. grdchk fail so far
1878      - tlm. grdchk OK
1879      - checked tapelev/comlev recomputations: OK
1880    <<<checkpoint51b_pre
1881    
1882    checkpoint51a_post
1883    o added code for biogeochemistry package
1884      - new pkgs: dic, gchem
1885      - new subroutine in ptracers
1886    o modify code for biogeo packages
1887      - in model/src and pkg/ptracers
1888    
1889    checkpoint51
1890    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1891      - autodiff, ctrl, exf, grdchk, seaice
1892      kept separate packages
1893      - cost, ecco, obcs
1894    o updating verification/internal_wave, verification/lab_sea
1895      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1896    
1897    checkpoint50i_post
1898    o Preparing next differentiable checkpoint and sync
1899      of MAIN vs. ecco-branch
1900      - 1st step: this one is differentiable
1901      - 2nd step: next(! not this) checkpoint will have updated packages
1902                  from ecco-branch)
1903    
1904    checkpoint50h_post
1905    o new package "land": provide surface BC for AIM.
1906    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1907    o AIM: use true log-P extrapolation for near surface temp (= as in
1908        F.Molteni paper) ; update aim.5l_cs output.
1909    o New variable in PARM03 for more flexible pickups
1910    o somewhat cleaned package initialisation sequence for
1911      ctrl/ cost/ ecco/ in packages_... routines
1912    
1913    checkpoint50g_post
1914    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1915      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1916      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1917        made the default because of faster convergence than ADI
1918    
1919    checkpoint50f_post
1920    o exf totally restructured
1921      - replaced all exf_set_ routines by one generic exf_set_gen.F
1922        and made sure it's still differentiable
1923      - split exf_getffields.F into new exf_bulkformulae.F
1924      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1925      - updated adjoint/makefile and relevant verif. accordingly
1926    
1927    checkpoint50f_pre
1928     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1929          + change Evap over land. (update aim.5l_cs output)
1930     o added missing .cvsignores and made uniform across expts
1931     o changed configuration of tidal_basin_2d expt
1932     o added pkg/debug functions for tracing code in fatal crashes
1933     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1934     o new fn in pkg/monitor to stop model if solution grows too big
1935     o removed lots of single quotes from comments
1936    
1937    checkpoint50e_post
1938    o make KPP work with PTRACERS
1939     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1940       nearly a copy of kpp_transport_s
1941     - there is no analogue to SurfaceTendencyS, so I have to use
1942       gPtr(of the surface layer) instead
1943    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1944    checkpoint50e_pre
1945    
1946    checkpoint50d_post
1947    o change kpp output from multiple-record state files to single-record state
1948      files analogous to write_state.F
1949    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1950      analogous to the cg2d-related output.
1951    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1952      so that writing to internal file fn (with length 512) fails.
1953    checkpoint50d_pre
1954    
1955    checkpoint50c_post
1956    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1957    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1958    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1959    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1960    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1961    
1962    checkpoint50c_pre
1963    Merging from release1_p13:
1964    o bug fix for pkg/seaice dynamic solver
1965    o Added SEAICE_initialHEFF to pkg/seaice
1966    
1967    checkpoint50b_post
1968    o store u*,v* in gU,V instead of in guNm1,gvNm1
1969    o in order to put the momForcing out of the Adams-Bashforth:
1970      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1971      to timestep.F
1972    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1973    o re-generate output for highly sensitive test-exp:
1974       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1975    
1976    checkpoint50b_pre
1977    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1978    o corrected CPP option mismatch in exf_Bulk... functions for case
1979      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1980    
1981    checkpoint50a_post
1982    o Bug fix for merging between c50 and KPP.
1983      ikey was passed from thermodynamics to kpp_calc via
1984      common block rather than being recomputed in kpp_calc,
1985      in contradiction with new key itdkey.
1986      New key ikppkey created, and tamc.h headers updated.
1987    
1988    checkpoint50
1989    - 2nd step of merge with ecco-branch:
1990      merge changes in ecco-branch back into main trunk
1991    - bug fix in find_alpha
1992    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1993    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1994    - merged some sliced AD support routines
1995    
1996    checkpoint49
1997    merged from ecco-branch:
1998    o exf:
1999      - Enable initialisation of forcing fields to constant
2000        (runtime) values.
2001      - in exf_getffields.F
2002        Reduce i-/j-loop to interior domain, discarding overlaps.
2003        That also fixes wrong TAF-key computations for key_1, key_2
2004        with bulf formulae.
2005      - exf_init.F modify #ifdef for exf_init_evap
2006      - exf_getffieldrec.F, ctrl_getrec.F
2007        The following INT-usages are not safe:
2008          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2009          fldcount = int(fldsecs/fldperiod) + 1
2010        and were modified.
2011    o autodiff: checkpoint_lev...
2012      - updated storing for bulk formulae (some arrays were missing)
2013      - added state for seaice package
2014      - synchronized with main branch
2015    o DIVA:
2016      Modif.s in
2017      - the_main_loop.F
2018      - the_model_main.F
2019      and added cost_final_restore.F cost_final_store.F
2020      o With these changes, it is possible to fully separate
2021        the first forward run to compute the cost function (mdthe_main_loop)
2022        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2023        into separate model executions.
2024        This enables better tuning of DIVA to given queue sizes.
2025      o Loss of cost function value in consecutive DIVA runs is
2026        fixed by storing to 'costfinal' file.
2027      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2028        beginning/end of adjoint integration is accounted for.
2029      The current changes apply to TAF-1.4.26.
2030      TAF has one remaining bug, requiring one manual change
2031      (see MITgcm manual).
2032    o cal: synchronized between MAIN and ecco-branch
2033    
2034    checkpoint48i_post
2035    o Changes to restore differentiability of code w.r.t. previous tag
2036      (mostly adding new routines to make list and replacing
2037      pressure by totPhiHyd).
2038    o Updated and merged grdchk package
2039      - has both ADM and TLM checks
2040      - works for single- and multi-proc.
2041      - output cleaned
2042      - worked successfully for parallel DIVA
2043    o genmake:
2044      - Adding -platform=SP4
2045      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2046    o Modif. for DIVA:
2047      ctrl_unpack should not be called in intermediate DIVA interval.
2048      (similar thing would apply for active files such as
2049      tbar, sbar, psbar, which should not be reinitialised;
2050      only relevant for ecco-branch)
2051    
2052    checkpoint48h_post
2053    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2054    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2055    o Added SEAICE_initialHEFF to pkg/seaice
2056    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2057    
2058    checkpoint48g_post
2059    --- EOS:
2060    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2061      store total Potential in totPhyHyd for diagnostics & EOS.
2062    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2063    --- Pressure/geopotential gradient:
2064    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2065    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2066      ( changes results of global_ocean_pressure )
2067    o NLFS + z-coord.: add eta*Rho' contribution.
2068    o accurate phiHyd when using interface-W at the middle between 2 centers
2069     ( changes results of ideal_2D_oce )
2070    o includes r* 2nd term in potential gradient.
2071    
2072    checkpoint48f_post
2073    Merging from release1_p12:
2074    o Modifications for using pkg/exf with pkg/seaice
2075      - improved description of the various forcing configurations
2076      - added basic radiation bulk formulae to pkg/exf
2077      - units/sign fix for evap computation in exf_getffields.F
2078      - updated verification/global_with_exf/results/output.txt
2079    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2080      (SBO) core products, including oceanic mass, center-of-mass,
2081      angular, and bottom pressure (see pkg/sbo/README.sbo).
2082    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2083      to avoid negative values in shallow regions.
2084      - updated verification/natl_box/results/output.txt
2085      - updated verification/lab_sea/results/output.txt
2086    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2087    o Added useSingleCpuIO option (see PARAMS.h).
2088    o Updated useSingleCpuIO option in mdsio_writefield.F to
2089      work with multi-field files, e.g., for single-file pickup.
2090    o pkg/seaice:
2091      - bug fix in growth.F: QNET for no shortwave case
2092      - added HeffFile for specifying initial sea-ice thickness
2093      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2094    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2095      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2096    o pkg/seaice:
2097      - adjoint-friendly modifications
2098      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2099    
2100    checkpoint48e_post
2101    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2102    o dynamics: change definition of computational domain & adapt mom_fluxform
2103      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2104    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2105        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2106        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2107        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2108        inverted_barometer solid-body.cs-32x32x1
2109      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2110    
2111    checkpoint48d_post
2112    o in preparation for r*:
2113     a) use pre-computed gradient of hydrostatic potential:
2114        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2115     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2116        => affects results of glob_oce_pressure (different truncation error)  
2117      update output.txt of ideal_2D_oce & global_ocean_pressure
2118    
2119    checkpoint48d_pre
2120    o in preparation for r*:
2121      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2122      pass the 2 comp. of the grad. as arguments to momentum S/R.
2123      but for the moment, only used if it does not change the results.
2124    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2125    
2126    checkpoint48c_post
2127    Modifications in treatment of initial flux forcing controls
2128    to avoid extra storing of flux fields.
2129    
2130    checkpoint48c_pre
2131    o Added tidal_basin_2d experiment (currently 1D!)
2132    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2133    
2134    checkpoint48b_post
2135    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2136     (modification to pressure gradient not yet implemented)
2137    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2138      (for U & V) that are used for vertical advection of momentum.
2139    
2140    checkpoint48a_post
2141    o In preparation for r*, use temp. array to compute vertical transport
2142       in flux-form momentum pkg. => change results of few test-exp.
2143      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2144                        lab_sea, natl_box & plume_on_slope
2145    
2146    checkpoint48
2147    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2148    
2149    checkpoint47j_post
2150    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2151    o moved adexch from forward_step to addummy_in_stepping
2152    o added exch in ctrl_map_...
2153    o aveFreq.=0. at end of cost_final to avoid overwrite in
2154      reverse checkpointing loop
2155    o Yet more changes in gmredi:
2156      * adgmredi_calc_tensor
2157        avoiding all recomputation of gmredi_slope_limit
2158      * adgmredi_x/y/rtransport
2159        added flag for excessive storing to avoid recomp. of
2160        u/v/rtans, dTdx/y/z
2161        -> this is not really necessary and very memory-consuming
2162      * adgmredi_slope_psi:
2163        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2164      * gmredi_slope_limit
2165        re-activated full calculation of taperfct for case 'ac02'
2166    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2167    
2168    checkpoint47i_post
2169    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2170    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2171      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2172    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2173    o gmredi: fix few bugs.
2174    
2175    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2176    This will be a good checkpoint to plug into the ecco-branch.
2177    o few modif.'s to get latest version adjointed
2178      (mainly kick out code in ini_linear_phisurf)
2179    o modif's to run adjoint with exactConserv
2180    o case GM_BOLUS_ADVEC should be cleaned
2181      S/R gmredi_slope_psi should be cleaned
2182    o verification/carbon now has exactConserv=.TRUE.
2183    
2184    checkpoint47g_post
2185    o time-average AIM output: becomes independent from statvars time-average
2186      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2187    o After TAF bug fix:
2188      Tested adjoint of gmredi package.
2189      Tests were done with checkpoint47 rather than with latest
2190      checkpoint47f_post since the latter is broken for the adjoint
2191      verification/carbon/ contains both ADM and TLM gradient checks.
2192    Here they are, before they get changed/lost/stolen.
2193    Mostly modif.'s to fix numerical sensitivities.
2194    Gradient checks OK for
2195    - GM_taper_scheme:
2196      * clipping
2197      * ac02
2198      * linear
2199      * glw91
2200      * dm95
2201      * ldd97
2202    - GMREDI_OPTIONS:
2203      * GM_VISBECK_VARIABLE_K
2204      * GM_NON_UNITY_DIAGONAL
2205      * GM_EXTRA_DIAGONAL
2206      * GM_BOLUS_ADVEC
2207    in conjunction with data.gmredi parameters to be checked in
2208    in a few minutes under verification/carbon/code/
2209    
2210    checkpoint47f_post
2211    Merging from release1_p10:
2212    o modifications for using pkg/exf with pkg/seaice
2213      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2214        and SEAICE_EXTERNAL_FLUXES
2215      - pkg/exf CPP options EXF_READ_EVAP and
2216        EXF_NO_BULK_COMPUTATIONS
2217      - usage examples are Experiments 8 and 9 in
2218        verification/lab_sea/README
2219      - verification/lab_sea default experiment now uses
2220        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2221    
2222    checkpoint47e_post
2223    o created a tag prior to creating a branch
2224    
2225    checkpoint47d_post
2226    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2227      at the bottom boundary had an erroneous half slip boundary condition
2228    o added bottom drag and no slip boundary condition capabilities to
2229      oceanic pressure coordinates code
2230    o added new verification experiment global_ocean_pressure, this experiment is
2231      also described in the tutorial section of the manual
2232    checkpoint47d_pre
2233    
2234    checkpoint47c_post
2235    o Added a verification experiment for a global cubed-sphere ocean run
2236      -  verification/global_ocean.cubed32x32x30
2237      -  uses pkg/therm_seaice and pkg/bulk_forcing
2238    
2239    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2240    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2241      when using P-coordinate; only implemented for atmospheric config.
2242    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2243      NOTES: requires option NONLIN_FRSURF to be "#define".
2244    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2245    
2246    checkpoint47b_post
2247    Merging from release1_p9:
2248    o pkg/seaice
2249      - removed GOTO's and added taf directives
2250      - double precision constants to reduce the g77 (Linux)
2251        to F77 (SGI) differences reported in release1_p8
2252    o tools/genmake
2253      - added SGI options
2254    o verification/testscript
2255      - updated to that of checkpoint47a_post
2256    o verification/global_ocean.90x40x15/input/eedata
2257      - modified for SGI f77 compatibility
2258    o verification/lab_sea
2259      - added description of sea-ice model
2260      - added missing matlab routines
2261      - added test of thermodynamics parallelization
2262    
2263    checkpoint47a_post
2264    o new pkg: aim_v23
2265     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2266       for now, keep the same surface forcing as before.
2267     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2268     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2269     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2270    o add diagnostic of surface correction term in monitor output
2271    
2272    o bulk_force and therm_seaice
2273    - Two packages:  bulk_force (Bulk forcing)
2274      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2275    - Earlier integration from Stephaine Dutkiewicz
2276      and Patrick Heimbach.
2277    - Two ifdef statements for compile time,
2278       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2279    
2280    checkpoint47
2281    differentiable version of checkpoint46n_post
2282    o bug fix in quasihydrostaticterms
2283    o * "clean" adjoint code (in terms of extensive recomputations)
2284        can now be obtained for all GMREDI options (i.e. for
2285        - GM_VISBECK_VARIABLE_K
2286        - GM_NON_UNITY_DIAGONAL
2287        - GM_EXTRA_DIAGONAL
2288        - GM_BOLUS_ADVEC )
2289      * However, wrong gradient check problem remains unsolved.
2290      * New CPP options have been introduced for different
2291        tapering schemes
2292    o external_fields_load now part of differentiation list
2293    o pressure needs multiple storing;
2294      would be nice to have store_pressure at beginning or
2295      end of forward_step, e.g. by having phiHyd global (5-dim.)
2296      (NB: pressure is needed for certain cases in find_rho,
2297      which is also invoked through convective_adjustment).
2298    o recomputations in find_rho for cases
2299     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2300    o #define ATMOSPHERIC_LOADING should be differentiable
2301    o ini_forcing shifted to begining of initialise_varia
2302    o Incorporating QNVS line search routines into MITgcm
2303      (this is separate code, and therefore not under pkg)
2304      lsopt/, optim/
2305    o Updated verification/carbon/
2306      - #define GM_VISBECK_VARIABLE_K
2307      - GM_taper_scheme    = 'ldd97'    
2308    
2309    checkpoint46n_post
2310    Merging from release1_p8:
2311    o verification/natl_box:
2312      updating new external_fields_load routine
2313    o New package: pkg/seaice
2314      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2315      The sea-ice code is based on Hibler (1979-1980).
2316      Two sea-ice dynamic solvers, ADI and LSR, are included.
2317      In addition to computing prognostic sea-ice variables and diagnosing
2318      the forcing/external data fields that drive the ocean model,
2319      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2320      The implied surface heat flux is then stored in variable
2321      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2322      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2323      non-local transport term.  Because this call precedes model
2324      thermodynamics, temperature under sea-ice may not be "exactly" at
2325      the freezing point by the time theta is dumped or time-averaged.
2326      N.B.: fairly large differences in accuracy occur across
2327            different platforms/compilers; comparison between
2328            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2329            generated output gives:
2330       T           S           U           V
2331      C D M    c        m  s        m  s        m  s        m  s
2332      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2333      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2334      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2335    
2336      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2337    o GAD:
2338      - generated new common blocks to account for call of
2339        same gad routines with differing traceridentities
2340        (needed to modify tracerIdentity indices in GAD.h)
2341      - generated separate common blocks for case useCubedSphereExchange
2342        (Department of Futurology)
2343      - parameter lists to gmredi_?transport: added tracerIdentity
2344      - added new key indices to tamc.h
2345    o external_fields_load:
2346      - added this routine to TAF list
2347      - needed to make some common blocks global and additional storing
2348        along the same lines as exf package (checkpoint_lev?_directives.h)
2349    o exf:
2350      updated external forcing package
2351      - bug fixes carried over from ecco-branch
2352        (missing OBCS_OPTIONS.h in two routines)
2353      - enable easy to use "no forcing".
2354      - added exf I/O for atmospheric loading
2355      - added exf I/O for runoff data
2356      - transfered scaling between exf <-> MITgcm to exf namelist
2357    o Adding new verification experiment global_with_exf.
2358      This verification experiment is almost identical to the
2359      global_ocean.90x40x15 experiment, except that it uses
2360      the exf (and cal) package instead of the
2361      external_fields_load routine (cf README file).
2362    
2363    checkpoint46m_post
2364    o modified testscript to return -- when there are no lines of "%MON" output
2365    o added new flag "quasiHydrostatic" for QH mode
2366      and new routine quasihydrostaticterms()
2367    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2368      New routine: mom_u_coriolis_nh()
2369    o fixed sign of non-hydrostatic metric terms in u and v equations.
2370      Depend on correct sign of gravitySign.
2371    o added work.pc* to .cvsignore in aim directories using ifc
2372    o introduced flag for controllin non-hydrostatic metric terms
2373    o removed gravitySign from PARM04
2374    o switched to g77/ifc from pgf77 in aim experiments
2375    
2376    checkpoint46l_post
2377    o made convective adjustment work with pressure coordinates:
2378     - changed the direction of k-loop in convective_adjustment.F for the
2379       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
2380     - adjusted the reference pressure k-index in convective_adjustment.F
2381     - adjusted the convection condition in convect.F (in analogy to
2382       calc_ivdc.F)
2383     - convective_adjustment no longer computes anything on the halos
2384     - removed the warnings about negative salinity from find_rho.F and
2385       find_alpha.F; instead the new routine look_for_neg_salinity, called
2386       at the beginning of find_rho, find_alpha, and find_beta, does a
2387       check of the entire slice, if CPP-option
2388       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
2389    checkpoint46l_pre
2390    
2391    checkpoint46k_post
2392    o fixed the verification/global_ocean.90x40x15 experiment:
2393     - new bathymetry (the world according to A., JMC, and M.)
2394     - new initial fields and forcing fields (*.bin files)
2395     - new POLY3.COEFFS (for the next release one should switch to a full
2396       equation of state: JMD95P or MDJWF)
2397     - fixed several errors and redundancies in the data file
2398     - experiment uses looped cells
2399     - added matlab directory with diagnostic scripts for plotting of output
2400    
2401    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
2402     - read AIM physics parameters from a file (data.aimphys)
2403     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
2404    
2405    checkpoint46j_post
2406    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
2407    o move wVel computation at the end of the time step, in S/R integr_continuity
2408    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
2409    o update timeave pkg for wVel diagnostic.
2410    checkpoint46j_pre
2411    
2412    checkpoint46i_post
2413    o Clean up AIM package (and keep the results unchanged):
2414      include CPP_OPTION and use IMPLICT NONE in all routines ;
2415      declare all the variables _RL ; use _d 0 for all numerical constants.
2416      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
2417    
2418    checkpoint46h_post
2419    o cleaned up the use of rhoNil and rhoConst.
2420      - rhoNil should only appear in the LINEAR equation of state, everywhere
2421        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
2422        and the dynamical equations are all divided by rhoConst
2423    o introduced new parameter rhoConstFresh, a reference density of fresh
2424      water, to remove the fresh water flux's dependence on rhoNil. The default
2425      value is 999.8 kg/m^3
2426    o cleanup up external_forcing.F and external_forcing_surf.F
2427      - can now be used by both OCEANIC and OCEANICP
2428    checkpoint46h_pre
2429    
2430     Added code to convert surface volume flux (fresh water) into
2431     a mass flux when using P coordinates in the ocean (OCEANICP).
2432     Note: It assumes you have set rho0=rhoConst=density of fresh water.
2433    
2434    checkpoint46g_post
2435    o Include a new diagnostic variable phiHydLow for the ocean model
2436      - in z-coordinates, it is the bottom pressure anomaly
2437      - in p-coordinates, it is the sea surface elevation
2438      - in both cases, these variable have global drift, reflecting the mass
2439        drift in z-coordinates and the volume drift in p-coordinates
2440      - included time averaging for phiHydLow, be aware of the drift!
2441    o depth-dependent computation of Bo_surf for pressure coordinates
2442      in the ocean (buoyancyRelation='OCEANICP')
2443      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
2444        Theta, Salinity, and Pressure in the parameter list. This routine is
2445        presently contained in find_rho.F. This routine does not give the
2446        correct density for 'POLY3', which would be a z-dependent reference
2447        density.
2448    o cleaned up find_rho
2449      - removed obsolete 'eqn' from the parameter list.
2450    o added two new verification experiments: gop and goz
2451      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
2452    checkpoint46g_pre
2453    
2454    checkpoint46f_post
2455    o Enable tangent linear (forward mode) gradient checks:
2456      - extended active file handling to g_... files
2457      - added TANGENT_SIMULATION to theSimulationMode
2458      - extended grdchk package accordingly
2459    o added tangent linear setup in verification/carbon/code_ftl
2460    o added adjoint setup in verification/front_relax/code_ad
2461    
2462    checkpoint46e_post
2463    o Added new equation of state -> MDJWF
2464      - EOS of McDougall et al., 2002, JAOT, submitted
2465      - caveat: the equation of state is only valid for a smaller (more
2466        realistic?) range of values than JMD95P/Z and UNESCO
2467      - added masks to the calculation of pressure in store_pressure
2468      - added more check values for density in check_eos (ini_eos.F), some of
2469        the old check values are out of the range of the MDJWF-eos, so don't
2470        expect perfect matches for those
2471    checkpoint46e_pre
2472    
2473    checkpoint46d_post
2474    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
2475      'OCEANICP', also initialised field pressure correctly in ini_eos in the
2476      case of pressure coordinates. eosType='JMD95Z' in
2477      combination with buoyancyRelation='OCEANICP' now causes an error.
2478    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2479      in find_alpha/beta.
2480    checkpoint46d_pre
2481    
2482    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2483      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
2484    
2485    checkpoint46c_post
2486    o Changes necessary for ocean in p-coordinates
2487     -  Added new buoyancy relation = 'OCEANICP'
2488     -  Added new parameters = gravitySign (this used to be contained inside
2489        the factor dRdZ which I added when we first switched to R coordinates).
2490     X GM/Redi is not compatible (yet)
2491     X bottom drag and no-slip need to be debugged.
2492    checkpoint46c_pre
2493    
2494    checkpoint46b_post
2495    o Added new equation of state -> JMD95Z and JMD95P
2496      - EOS of Jackett and McDougall, 1995, JAOT
2497      - moved all EOS parameters into EOS.h
2498      - new routines ini_eos.F, store_pressure.F
2499    o Added UNESCO EOS, but not recommended because it requires
2500      in-situ temperature (see JMD95)
2501    o Modified formatting for knudsen2.f in utils/knudsen2 and added
2502      unesco.f to be used with POLY3
2503    checkpoint46b_pre
2504    
2505    checkpoint46a_post
2506    o Added (atmospheric) pressure loading
2507      - new field in FFIELDS.h, etc...
2508      - new cpp flag ATMOSPHERIC_LOADING
2509    o Changed hFacC to _hFacC in calc_phi_hyd.F
2510    o Added SHORTWAVE_HEATING to some files for consistency
2511    checkpoint46a_pre
2512    
2513    checkpoint46
2514    further merges from release1_p5
2515    o new ctrl package
2516      - adopted from ECCO environment to enable optimization
2517      - added Eliassen Palm fluxes to controls
2518    o added Eliassen Palm flux controls to gradient check package
2519    o cost package
2520      - Compatible with new ctrl package
2521      - added Eliassen Palm cost hooks
2522      - modif's of existing cost functions
2523    o Adjoint-related bug fixes in kpp:
2524      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
2525      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
2526    o autodiff package
2527      - flow directives:
2528        + new for S/R do_the_model_io
2529        + enhanced for S/R checkpoint
2530        + new gmredi.flow
2531      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
2532        disable adcommon.h/g_common.h by default.
2533      - fixed problem for adjoint of global_max
2534    o modified verification/carbon/
2535    o New setup for adjoint of global_ocean
2536    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
2537    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
2538    o incorporated hooks for sponge layer code (external_forcing.F)
2539    
2540    checkpoint45d_post
2541    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
2542    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
2543      (affects plume_on_slope "cg2d" output)
2544    o add new parameter deltaTfreesurf for free-surface time stepping
2545    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
2546  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
2547  o change phiMin in exp1 (to agree with documentation)  o change phiMin in exp1 (to agree with documentation)
2548  o add new flags:  o add new flags:

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