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revision 1.76 by jmc, Fri Jul 12 14:52:08 2002 UTC revision 1.706 by jmc, Sun Jul 16 00:27:38 2006 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
8       keep global_ocean.90x40x15 (for AD testing) with former secondary test
9       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
10    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
11        add MITgcm_tutorials (= code + all the tutorials)
12    o ecco, option to compute cost for total ssh (mean+anom)
13    o consistent with addition of ptracer and ssh in pkg/profiles
14    o profiles: adding ptracer and ssh
15    o testreport: change multi-test output-file name
16      (from output.txt.{name} to output.{name}.txt)
17    o profiles: now ok for mutli-threaded case
18    o seaice: add 4 parameters for different advection schemes for area,
19      (effective) seaice thickness, enthalphy, and snow height. Their default
20      is the standard parameter SEAICEadvScheme
21    o calc_gw:
22     - add cosFacU in zonal viscous flux (harmonic.visc.).
23     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
24       of tutorial_plume_on_slope.
25    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
26    o calc_gw: true flux-form, account for horizontal grid spacing.
27      update rotating_tank results, but not plume_on_slope (affected at
28      truncation level, 11 digits).
29    
30    checkpoint58l_post
31    o calc_gw:
32     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
33     - remove side-drag for now (need to fix it); update plume_on_slope results.
34     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
35    o commit code to make SST/SSS weights spatially variable
36      (based on either variable in-situ or variable initial T/S weights)
37    o pkg/ecco:
38      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
39        now based on horizontally varying weights wthetaLev, wsaltLev
40      * cost_averagesflags now returns year indices in addition to day, month
41      * sflux balance is performed on annual basis
42        (sflxumm, sfluxmm2, bal_sfluxmm)
43      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
44        including separate counting and multipliers
45    o pkg/rbcs
46      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
47    
48    checkpoint58k_post
49    o testreport:
50     - always build in dir. "build" (if not there, mkdir build instead of building
51       & running in input)
52     - run in dir run (if it exists), in build otherwise.
53     - call prepare_run (if input/prepare_run exists)
54     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
55    o pkg/exf modifications to interpolation and rotation routines for more
56       reasonable treatment of North Pole singularity: for tracers North Pole
57       value is set to northernmost zonal-mean value, for zonal velocity it is
58       set to zero, and for meridional velocity it is set to northernmost value.
59    o pkg/exf/exf_check_range.F
60     - add tile index to diagnostics and move stop statement to the very
61       end of the routine.
62    o pkg/diagnostics: (diagnostics_main_init.F)
63      define title of isomorphic variables according to the current config.
64    o pkg/thsice with pkg/seaice dynamics:
65    - fix domain of computation (interior only, required for exf) and do exchanges
66    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
67    o towards a standard way of dealing with multi-threading in MONITOR
68      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
69    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
70       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
71    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
72    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
73    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
74       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
75    o tracer advection:
76     - clean-up and simplify calc_common_factors.F
77     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
78       advection subroutine (but still not used within DST advection S/R)
79    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
80    
81    checkpoint58j_post
82    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
83      from file (collects calls previously in FORWARD_STEP)
84    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
85    o adjoint store dir. adjusted accordingly
86    o genmake2
87      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
88    
89    checkpoint58i_post
90    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
91      on wind stress (SEAICEstressFactor defaults to 1.)
92    o Total number of Timers is finite (<=40): comment out 2 non-essential one
93      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
94    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
95      on CS-grid: no longer loosing mass.
96    o exf & curvilinear-grid: no longer modify longitude xC & xG.
97    o pkg/ggl90: fix sloppy output and fix a bug
98    o pkg/seaice: added SEAICEuseEVPpickup parameter
99      - Set to false in order to start EVP solver with
100        non-EVP pickup files when using SEAICEuseEVP
101      - fix sign error in diffusion in seaice_calc_rhs
102    
103    checkpoint58h_post
104    * Modifications for bottom topography control
105      o replace hFacC by _hFacC at various places
106      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
107      o add non-self-adjoint cg2d_nsa
108      o update autodiff support routines
109      o re-initialise hfac after ctrl_depth_ini
110      o works for 5x5 box, doesnt work for global_ocean.90x40x15
111    * Adding verification for 5x5 box (4-layer) bottom topography control
112    
113    checkpoint58g_post
114    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
115       used for mean seasonal cycle, mean diurnal cycle); add an example
116       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
117    o pkg/ggl90:
118      - add parameter (minimum surface kinetic energy)
119      - fix bug (avoiding division by zero)
120    o couple pkg/thsice to pkg/seaice:
121      - modify advection in seaice to accomodate new scalar fields to be advected
122      - only muliDimAdection scheme work with seaice/thsice
123      - mapping of thsice-variables to seaice-variables, back and forth
124      - does not break the verification experiments, but does not give the
125        desired results either
126    o pkg/seaice
127      - make (default) second order advection a bit less confusing?
128    
129    checkpoint58f_post
130    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
131      to pkg/seaice):
132      - new routines thsice_map_exf and thsice_get_exf provide the interface
133      - add an additional formal parameter to thsice_solve4temp
134    o pkg/exf:
135      - add new fields wspeed, snowprecip (to be able to couple to thsice)
136      - correct Stefan-Boltzmann constant
137      - new parameter for longwave surface emittance
138      - separate some stuff from exf_bulkformulae into new routines  
139        exf_radiation, exf_wind
140      - add new parameters and constants: longwave emissivity for ocean, ice
141        and snow, evaporation parameters over ice
142      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
143        either wind from stress or stress from wind
144    o pkg/thSIce:
145    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
146    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
147       and THSICE_CALC_THICKN
148    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
149    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
150      to make debugging easier.
151    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
152    o pkg/bulk_force:
153      - clean-up comments and parameters ;
154      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
155    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
156      generate new output for test-experiment: aim.5l_cs.thSI
157    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
158      testreport accordingly
159    
160    checkpoint58e_post
161    o SEAICE_CGRID adjoint done
162    o R_STAR adjoint implemented.
163      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
164      * need to sort out init. of h0facc, etc.
165    o Make pkg/profile fully independent of ecco,cost, etc. stuff
166      to be able to use it in pure forward.
167    
168    checkpoint58d_post
169    o upgrade simple test-experiment to tutorial example:
170     step.1: duplicate the experiment and (step.2) will remove the old copy.
171      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
172      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
173      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
174      tutorial_global_oce_biogeo    <- copy of dic_example
175      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
176      tutorial_plume_on_slope       <- copy of plume_on_slope
177      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
178      tutorial_global_oce_optim     <- empty for now (David ?)
179      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
180     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
181    o correct a sign problem in cost_scat.F
182    o obcs and ptracers: fix boundary conditions for advections schemes
183      with larger stencil
184    o thsice adjoint: start
185    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
186      completeness
187    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
188      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
189    o ptracers adjoint:
190      * avoid extensive recomputatations
191      * fix missing re-init. of gptr (missed by TAF)
192    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
193      me to turn off the excessive output to STDOUT that this package produces
194    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
195      and add those terms in Vector-Invariant formulation.
196    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
197      if the control period (xx_hfluxperiod etc) is 0
198    o in profiles pkg, clean routines and fix details
199    o in ecco pkg, reading ssh data:
200      fix problem in case the model does not start at iter0=0
201    o fix mnc-pickup/restart for ptracers
202    o new package prifiles:
203      code to compute profile-based cost by Gael Forget
204      (modifs in ecco, ctrl, autodiff)
205    o Benign bug fix in initialization (spotted by M. Mazloff) of
206      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
207    
208    checkpoint58c_post
209    o adjoint: finish NLFS adjoint and provide reference output in
210      verification/global_ocean.90x40x15/results_ad_nlfs
211    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
212      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
213      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
214      with SEAICE_CGRID defined.
215    o move calendarDumps from "data" to "data.cal" and clean-up the code
216      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
217    o add useEXF & useCAL flags (for now, set in hard-coded way)
218    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
219      (were missing in NH mode, and wrong in quasihydrostatic mode).
220      waiting for Chris updated version of calc_gw to add those CALLs.
221    o fix bug in quasihydrostatic S/R ;
222      add a test for this option: global_ocean.90x40x15.qshyd
223    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
224      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
225    o add on/off flag useOffLine for package OFFLINE
226    o seaice:
227      - modify advection so that it works also on the C-grid
228      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
229        problem in multi-tile runs with C-grid
230      - add flags for clipping ice velocities and/or masking solver forcing
231      - fix drag (ocean on ice) formulation and a bug that caused noise in the
232        C-grid solver
233      - added a few comments to seaice_diffusion.F
234      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
235        are now exclusive)
236      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
237        required re-ordering the code a little:
238       + make DAIRN global variable (defined in SEAICE)
239       + move computation of the viscosities eta and zeta into a new separate
240         routine (because I need to recompute them in seaice_ocean_stress.F)
241    
242    checkpoint58b_post
243    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
244      update output.txt of exp. aim.5l_cs.thSI
245    o various mnc cleanups and improvements:
246      + shrink lookup tables by factor of ~4
247      + better error reporting when running out of lookup space
248      + able to handle longer path/file names (up to 500 chars)
249    o adjoint:
250      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
251      - TBD: "hidden" mom_vecinv recomp. in dynamics
252    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
253     (allow to differentiate between forcing components using new integer flags:
254      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
255     and add new flag to put Dissipation tendency out of Adams-Bashforth.
256    o ecco
257      - enable trend removal from SSH anomaly obs.
258    o adjoint
259      - a fix for PmEpR when #undef EXACT_CONSERV
260      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
261      - try to fix "hidden" recomp. in forward_step for NLFS
262        (NLFS seems broken sometimes after I checked it in)
263    o seaice:
264     - add c-grid version of the dynamic solver:
265       + three new routines that are the c-grid substitute lsr, dynsolver
266         and ostres
267       + put a few fields that were local to dynsolver into global common
268         blocks, so that I can move the computation of stresses etc into
269         seaice_lsr (saves coding but may break the adjoint).
270     - replace more hardwired parameters by runtime parameters
271     - add ice masks that mask the rhs of the implicit solvers where there
272       is no ice (commented out in seaice_dynsolver, because i am not sure
273       if this works properly), eventually this should replace the clipping
274       of ice velocities in seaice_dynsolver to +/-40cm/s.
275    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
276      include it only where its needed
277    o move balancing of fluxes before the call of external_forcing_surf
278    o seaice:
279      - correct units of turning angles (now they are really in degrees)
280      - move computation of GWATX/Y out of main routine into dynsolver
281      - initialize GWATX/Y in seaice_init
282    o Apply mask on Fresh-Water flux (needed for SSH forcing).
283      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
284    o seaice: add runtime flags for turning angles (default to zero)
285    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
286      and trend from exf forcing and ctrl control adjustments
287    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
288      (since checkpoint57x_post)
289    o change the default rotation period to 86164.s = the Earth rotation
290    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
291      and based on a reference stratification. Tested within hs94.cs-32x32x5.
292    o seaice advection: add code for choosing between the default (2nd order
293      central differences) and multiDim advection schemes provided by
294      pkg/generic_advdiff
295    o seaice:
296      - removed all references to SEAICE_GRID.h fields from
297        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
298        (cubed-sphere configuration will change a little)
299      - grid computations in seaice_init are obsolete now.
300      - cleaned up code a little so that is easier to read (hopefully).
301      - added new (better?) discretizations of default advection and diffusion
302        (turn on with SEAICEuseFluxForm)
303      - replace 1 in 3d global fields by kSurface in growth.F
304      
305    checkpoint58a_post
306    o seaice:
307      - bug fix in advect.F
308    o shelfice:
309      - separate shelfice load anomaly from pload (breaks with time
310        dependent forcing), => introduce constant field shelficeLoadAnomaly.
311        Its default is 0., but it may be computed more cleverly from (unknown)
312        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
313        done offline. A good approximation of the pressure load anomaly is
314        necessary to avoid large initial adjustment processes underneath
315        deep-reaching shelfice.
316      - small fix in ISOMIP shelfice_thermodynamics
317      - add more sophisticated thermodynamics of Hellmer (1989), this is
318        now the default
319      - give a few constants more intuitive names
320    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
321      if bulk formulae are used in long integration (especially EmPmR). Turn
322      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
323      if balancePrintMean, the imbalance that is substracted is printed to
324      STDOUT.
325    o fix bug (typo) in obcs_apply_eta.F
326    o add a new package shelfice which enables us to model the circulation
327      underneath shelf-ice with draughts of hundreds of meters.
328     - works
329     - to do: + include improved thermodynamics
330              + check whether kSurfC (from model/inc/SURFACE.h) can be used
331                instead of new field kTopC
332              + can we use topoFile, Ro_surf and existing code in ini_depth.F
333                instead of new field R_shelfIce and new code in ini_depth.F
334                and ini_mask_etc.F?
335              + adjust vertical mixing schemes?
336    o seaice pkg:
337     - add a cpp-flag to include a simple formula for a salinity dependent
338       freezing point of sea water at the surface
339     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
340       meridional stresses are now different (and hopefully correct)
341    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
342       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
343       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
344    o pkg/diagnostics: add options and parameters for regional-statistics
345       diagnostics ; define regions by reading a region-mask from a file
346       (might add other options later)
347    o pkg/bulk_force:
348     - add option and parameters to use AIM surface-flux formulae.
349     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
350       others forcing fields (defined in PARM05, parameter file "data") are loaded
351       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
352     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
353     - use the right EXCH call for uwind,vwind (to work on CS-grid).
354     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
355       and parameters (note: calcWindStress replaces .NOT.readwindstress).
356     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
357    
358    checkpoint58
359    o add "--embed-source" option to genmake2 which, when the supporting
360      tools can be compiled (as determined by genmake2) will turn on the
361      embed_files package which then embeds the entire MITgcm source code
362      (*.[fFhc] + Makefile) used for the build within the executable
363      - requested by CNH but off by default
364      - adds a paltry <9MB to the mitgcmuv executable in most cases
365      - only writes the output when useEMBEDSRC in eedata is true
366    o clean up 3-dim. relaxation codes:
367      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
368      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
369      * Thanks to Tom Haine for testing!
370    
371    checkpoint57z_post
372    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
373      affects output (@ truncation level) of exp. plume_on_slope ; updated.
374    o fix the pickup behavior for obcs in combination with ptracers
375    o fix a bug in ptracers_external_fields_load
376    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
377      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
378    o transfered surface NH pressure to eta field (if exactConserv).
379    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
380         and update lab_sea output.txt file.
381    o completing 3-dim. relaxation code: additional term
382         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
383      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
384      * At compile time, in "EXF_OPTIONS.h" set
385          #define  ALLOW_CLIMTEMP_RELAXATION
386          #define  ALLOW_CLIMSALT_RELAXATION
387      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
388          tauThetaClimRelax3Dim = 15552000.0,
389          tauSaltClimRelax3Dim  = 15552000.0,
390      * 3 cases:
391          1) Use a constant-in-time 3-dim. field
392          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
393          3) Real-time relax. to time-evolving prescribed field
394    o Adding Laplacian-type smoothness constraint on
395      initial and boundary (forcing) controls (ic, bc)
396      * enable at compile-time via
397        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
398      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
399      * Absolute scale somewhat unclear so far
400      * no area weighting was included since no other cost term does so far
401    
402    checkpoint57y_post
403    First step for a NLFS adjoint
404    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
405    o new init. routines for calc_r_star, calc_surf_dr
406    o still need to deal with ini_masks_etc
407    o testreport seemed happy
408    checkpoint57y_pre
409    
410    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
411    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
412    o add new offset feature to offline pkg (plus minor cleanup)
413    o cfc fixes for final year of integration
414    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
415      be in GCHEM_OPTIONS).
416    
417    checkpoint57x_post
418    o fix testreport Pb in multiple test experiment.
419    o cleanup our namelist syntax in verification:
420      - make it more F95 standards compliant (some work still needed)
421      - allows the vast majority of our tests to work with gfortran
422    o Non-Hydrostatic:
423     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
424     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
425    o Allow to apply AB on T,S rather than on AB(gT,gS):
426     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
427     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
428       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
429     - need a "clever" read_pickup to restart from the other AB formulation
430    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
431    o remove some unused variables (reduces number of compiler warnings)
432    o adjoint
433      * Disable useVariableViscosity for adjoint for time being
434        (there are a number of extensive recomputations)
435      * Initialize certain variables needed for adjoint
436    
437    checkpoint57w_post
438    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
439                 fix the singleCpuIO RS version of MDSWRITEFIELD
440       and add a WARNING if using globalFiles=T with multi-processors.
441    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
442      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
443    o tracer advection scheme:
444      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
445       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
446       was not very convenient).
447      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
448       (further tests needed for the implicit DST & Flux-Limiter schemes).
449    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
450      and sRef for convenience, handy, when you want to initialize
451      ptracers in a large domain with a constant non-zero value. Also,
452      untangle ptracers_init.F a little.
453    
454    checkpoint57v_post
455    o change dome exp. to use variable viscosity in side-drag terms.
456    o remove all the files from the cfc_offline test since they are now
457      incorporated into tutorial_cfc_offline which has been producing
458      identical results for a few days of testing
459    o add new parameter: sideDragFactor to enable half-slip-side BC
460      and change side-drag S/R to use viscosity from mom_calc_visc
461      (can switch back by setting sideDragFactor=0.); affects results at
462      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
463       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
464    o vorticity & strain are now computed without masking, to account for
465      no-slip-side BC in variable viscosity calculation ; mask is applied
466      anyway later on, before computing advection/coriolis terms.
467    o modify exp4 to test new obcs support for reading from external files
468      and for passive tracers
469    o fix behavior of ptracers_monitor when monitor output is written to a
470      netcdf-file; still not independent of monitor.F (writes in the same
471      file).
472    o change default value of tRef (put a uniform, meaningful value for ocean
473      & atmos) and initialize sRef (was missing, as Martin mentioned).
474    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
475      to be proportional to enstrophy dissipation length.  Thus,
476       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
477      This is now consistent with Smagorinsky and with the manual.
478    
479    checkpoint57u_post
480    o OBCS and PTRACERS: add open boundary support for passive tracers
481      - either use homogenous (pseudo) v.Neumann conditions or prescribe
482        OB-values from file; this is not different from the way theta and salinity
483        are treated
484      - however, Orlanski-radiation conditions are not supported, and the model
485        will stop if you use pTracers and Orlanski at the same time.
486      - beefed up the rountine obcs_external_fields_load: now only those open
487        boundary values are overwritten with values from files for which there
488        are really files, otherwise the OB-fields remain untouched. This makes
489        it possible to use different OBs at different ends of the domain (as
490        with EXF)
491    o reduce number of exch calls in shap_filt (s2).
492    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
493      truncation level) 4/5 MLAdjust test results (11&12 digits match).
494    
495    checkpoint57t_post
496    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
497    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
498      same truncation, independent of the face number: affects affects several
499      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
500    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
501      note that biharmonic viscosity + no-slip was not tested in any experiment.
502    o fix bug in non-linear free-surf side-drag ; generate new output for
503      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
504    o make mnc honor the writeBinaryPrec flag for most kinds of output
505    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
506    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
507      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
508    o add brackets in multi-terms sum to get same truncation, independent of
509      the face number (manage to get exactly same value of gU,gV at the cs-edge)
510      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
511    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
512      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
513      a maximum grid-scale Reynolds number.  Also, changes all length calculations
514      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
515      Suggested values of viscosity parameters found in mom_calc_visc.
516      Many new viscosity diagnostics available.
517    
518    checkpoint57s_post
519    o Add clearing-house for viscosity calculations, mom_calc_visc and
520      correct numerous bugs in LeithD and Smagorinsky discretizations.  
521      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
522      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
523      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
524      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
525      The Strain-Tension form is now called with useStrainTensonVisc=.true.
526      ViscAhStrain and viscAhTension are now retired.
527    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
528    o In response to JMC's bug report, genmake2 now ignores any soft-links
529      that it finds in the *current* directory when searching for files.
530      Soft-links found in any other source directories will still work as
531      they did before.
532    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
533      a C routine to unlimit the stack size
534    o mnc-ify pkg/aim snapshot vars
535    o mnc-ify pkg/land as requested by Daniel
536    o various changes to mnc including:
537      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
538      - output can now be grouped so that all files within a group
539          change the ITER portion of their names in lock-step together
540      - can now read ("global") PER-FACE (in addition to PER-TILE) files
541          and works with both EXCH1 and EXCH2 (but needs more testing)
542      - writing works for all verification test cases w/ g77 on Linux
543    
544    checkpoint57r_post
545    o make MNC variable initialization happen earlier
546    o add diagnostics for (almost) each term of the momentum Eq.
547    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
548    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
549    o remove MINIMAL_TAVE_OUTPUT option ;
550      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
551    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
552      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
553    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
554    o add time-dependent SST, SSS control
555    o cost terms in ecco/ modularized (new cost_generic.F)
556    o cost_averages routines are modularized (new cost_averagesgeneric.F)
557    o new infrastructure for seaice model vs. obs misfits in seaice/
558      * driver from the_main_loop.F is seaice_cost_driver.F
559      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
560      * gradient check in Exp. 6a of natl_box_adjoint/
561    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
562      (see README file)
563    
564    checkpoint57q_post
565    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
566    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
567      - bug was reported by Jean-Michel and Ian Fenty
568    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
569      update exp. cpl_aim+ocn output.
570    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
571      Needed for high-res. runs with large global files
572      to be able to limit tapelev size
573    o Changed some tests for adjoint:
574      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
575      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
576      * global_ocean.90x40x15/ back to default 3-level checkpointing
577    o Modifications to enable scripted COMMON to MODULE conversion
578      * verification/OpenAD/code/ has necessary scripts and description;
579      * converts, compiles and runs successfully;
580    
581    checkpoint57p_post
582    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
583    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
584      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
585    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
586    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
587      (was already the case for dissipation with mom_vecinv,
588       and also the case for grad.PhiHyd when staggered-timeStep)
589      This will allow to put dissipation out-off the AB time-stepping.
590     Unfortunately, affects truncation error. Update output of exp. that "fails"
591      (cg2d matching number) and leave the others for later: front_relax(10),
592      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
593      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
594    
595    checkpoint57o_post
596    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
597      (2) its ready to be documented during the 20050801 DocFest
598    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
599      for ideal_2D_oce and lab_sea on linux_ia32_g77
600    o set to #undef CTRL_SET_OLD_MAXCVARS_30
601      in global1x1_tot/code_seaice_adj to access indices 32, 33
602      (worth another tag)
603    
604    checkpoint57n_post
605    o adding precip control xx_precip 32
606    o adding swflux control xx_swflux 33
607    o Replacing 10 forcing penalty cost routines by 1 generic.
608    o Implementing partitioning in time-mean and variable adjustment
609      for atmos. state.
610    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
611    o in natl_box_adjoint:
612      * updated exp 1 to 10
613        (but does not have time-mean vs. variable split results yet)
614    o updated global1x1/*_seaice_adj/
615      to incorporate latest changes
616    o enable useSingleCpuIO for mdsio vector routines
617      (applies in particular to tapelev I/O)
618    o removed inefficient K-loop in all active_file*control*.F
619    
620    checkpoint57m_post
621    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
622      and advect_cs (use EXCH-2 and standard cs-32 grid files).
623    o pkg/exch2: filling of face-corner halo regions is optional
624      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
625    
626    checkpoint57l_post
627     tag before updating tutorials (pre-release-2)
628    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
629       for output and interpolation of input fields onto model grid)
630    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
631       Affects results of exp. rotating_tank ; update output.txt.
632    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
633          and taking the square quantity and/or using a fraction-weight field.
634    o fix aim_diagnostics_init.F mate numbers.
635    o add mnc output capability to diagnostics/diagstat and update
636      our cvsignore files for the ACSII output generated
637    
638    checkpoint57k_post
639    o lab_sea now uses diagnostics package and provides a suite of
640      new EXF diagnostics output.
641    
642    checkpoint57j_post
643    o exf
644      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
645        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
646        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
647      * extended diagnostics output
648        - now includes all EXF variables
649        - hs, hl moved to common block
650        - separate S/R for diagnostics, called after ctrl vector is added
651        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
652        - EXFqnet contains true Qnet (i.e. includes qsw)
653      * updated verif. lab_sea, global_with_exf
654      * Rearranging hflux (exf_mapfields -> exf_getforcing)
655        to ensure that diagnostics sees a true EXFqnet
656    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
657    o diagnostics pkg: change pointers so that 1 diagnostic can be used
658      several times with different frequencies.
659    o mnc-ify the thsice package as requested by Daniel Enderton
660      - the monitor--MNC output needs work
661      - many attributes need to be added (most are currently blank)
662    o mnc-ify theaim_v23 package as requested by Daniel Enderton
663      - many attributes need to be added (most are currently blank)
664    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
665    o add Sadourny like discretization to the 4th.O vorticity advection scheme
666    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
667      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
668         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
669    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
670     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
671    
672    checkpoint57i_post
673    o Diagnostics package was changed: diagnostic allocation is now deactivated
674      by setting an empty file name in the namelist (used to be by setting 0 frequency)
675    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
676      add 1rst Order upwind vertical Shear.
677    o add a quick fix for A/B checkpointing in OFFLINE mode
678    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
679      end-run around the C/Fortran linking horror in eesup/src/timers.F
680    o added pkg/runclock: allows user to terminate run based on wall clock
681    o added non-hydrostatic scaling parameter: nh_am2
682    o pkg/my82: futile attempt to make results compiler-independent by adding
683      some "_d 0", etc. no effect.
684    o for mnc output, fill the 'T' coordinate var with myTime and create a
685      separate 'iter' variable for iteration count
686    o pkg/diagnostics:
687      add new capability: output of Global/Regional & per-level statistics ;
688      tested against monitor output (including land & thSIce) on various exp.
689    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
690    
691    checkpoint57h_done
692      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
693      data.diagnostics, data.gchem, data.ptracers) is done.
694    
695    o pkg/diagnostics: prepare for Global/Regional statistics.
696      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
697    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
698      and rename it: DIFFERENT_MULTIPLE
699    
700    checkpoint57h_post
701    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
702    o pkg/diagnostics: change output frequency, now in seconds (instead
703      of Nb of iterations). This requires to change data.diagnostics.
704    checkpoint57h_pre
705    
706    o in mnc, let the user create the output dir if both mnc_outdir_date
707      and mnc_outdir_num are false
708    o add fflags() to pkg/diagnostics which allows one to specify, on a
709      per-file basis, the file precision [default behavior is unchanged]
710    o added diagnostics to pkg/kpp, including computation of mixed layer
711      depth based on a temperature/density criterion
712    o updated verification/natl_box to test the new pkg/kpp diagnostics
713    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
714    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
715    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
716      not mnc -- this mistake was found by JMC and is now corrected
717    
718    checkpoint57g_post
719    o add Adams-Bashforth 3rd Order time stepping:
720      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
721      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
722    checkpoint57g_pre
723    
724    o make lambda[Theta,Salt]ClimRelax spatially varying
725      (default remains spatially uniform constant based on tau)
726    o added new control variables
727      * init. uVel, vVel, etanN
728      * lambda[Theta,Salt]ClimRelax
729    o separate masks used for ctrl_pack/unpack 'from write_grid' output
730      (suggested by G. Forget)
731    
732    checkpoint57f_post
733    o add parameter "baseTime" = model base time = time at iteration zero
734      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
735      account for baseTime shift
736    o move Coriolis arrays from PARAMS.h to GRID.h
737    checkpoint57f_pre
738    
739    o mnc-ifying the seaice package
740    o introduced an alternative length scale calculation for use in the limiting
741      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
742    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
743    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
744      as well as grad(vort3).  Made it compatible with both approximate form
745      for the cubed sphere and full form of these gradients.  Added flag
746      useFullLeith to select between approximate and full form.  
747    o add "d0" in getcon.F to reduce differences between compilers/platforms
748      update output.txt of exp. fizhi-gridalt-hs
749    o change port_rand funtion to allow to set the seed.
750    o fix obscure MNC bug involving conversion between reals and integers
751      - it caused no problems with certain (eg. gcc, ifc) compilers but the
752        new version is now more standards-compliant
753    o adjoint-related modifications
754      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
755      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
756      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
757    
758    checkpoint57e_post
759    o Adding eddy stress controls a la Ferreira et al.
760    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
761    
762    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
763      update output.txt of exp. fizhi-gridalt-hs
764    o add more "Z" dimensions and associated coordinate vars to MNC
765    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
766    o parameter calendarDumps: when set, approximate months (30-31 days) and years
767      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
768      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
769      months and years.  Requires pkg/cal.
770    o diagnostics: add pickup functionality
771      - off by default for backwards compatibility
772      - current version only uses MDSIO -- MNC will be added
773    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
774    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
775    
776    checkpoint57d_post
777    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
778    o modify verification/ideal_2D_oce so that it tests the creation of mnc
779      output from the diagnostics package
780    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
781    o make genmake2 more portable by using ".$FS" instead of ".f" for more
782      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
783    o add coordinate variables to the MNC output from the diagnostics package
784    o change MNC-flags default value: true when useMNC=TRUE
785    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
786      the ability (off by default) to read the grid information using MNC
787    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
788    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
789    o do snap-shot diagnostics at the middle of the time-interval (instead of
790      at the end).
791    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
792      new test for AIM with thSIce + slab-ocean
793    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
794    o move state variable diagnostics to the beginning of the time step ;
795      (note: still needs some work specially for snap-shot diagnostics)
796      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
797    
798    checkpoint57c_post
799    o Change testing option (-ieee) to get closer agreement between g77 & ifort
800    o generate new output.txt files on faulks with g77 & the new -ieee option
801    checkpoint57c_pre
802    
803    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
804      update output.txt of exp. global_ocean.90x40x15
805    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
806      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
807    o add saltFlux(+File) forcing capability with periodicExternalForcing
808    o allow to use pkg diagnostics for GM-Redi & ThSIce output
809    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
810    o improvements for the MNC output from DIAGNOSTICS:
811      - correct handling of the unlimitied dimension
812      - all dims now have associated coordinate variables
813      - variables located at U, V, and Corner ("Z") points are now written
814        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
815        *all* data points are output
816    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
817    o added pkg/seaice/seaice_monitor.F
818    o mdsio_readfield.F can now read files visible only to master MPI process.
819    o pkg/seaice: some test code for ice-modified ocean stress
820    o exf_getffields interpolation defaults to bilinear for all scalar forcing
821      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
822      spurious negative numbers for precipitation and humidity.  Will cause
823      some small numerical differences for integrations using pkg/exf/exf_interp.F.
824    o pkg/ctrl/
825      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
826        May be enabled via doPackDiag
827      *  introduce z-scaling of
828         + gradient (doZscalePack) and
829         + control (doZscaleUnpack)
830    o pkg/mdsio/
831      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
832      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
833    
834    checkpoint57b_post
835    o simplify options in diagnostics_fill arguments (remove weird combinations)
836    o fix MNC coordinate variables so that they now contain per-face index
837      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
838      general, EXCH2 grids are only aligned to a "local" coordinate system
839    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
840    o Implement instantaneous output within pkg diagnostics:
841      setting a negative frequency in data.diagnostics produces
842     "snap-shot" output (as opposed to time-average if freq > 0)
843    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
844      NOTE: change ptracer diagnostics name: use 2 characters to work with
845            more than 9 tracers. Add also diagnostics of advect & diffus flux.
846    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
847      becomes the coordinate variable for the 'T' dimension
848    o add CF-style coordinate variables to MNC
849      - just a first cut:  numbers are meaningless on the cubesphere and
850        missing along the T axis but otherwise it works!
851    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
852    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
853    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
854      this is based directly on what the model compute, so that the content of
855      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
856    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
857    o clean up build options files for SunOS, in particular
858      - remove -traditional from xmakedepend
859      - change -xarch=v9 to -xarch=native for f77
860      - restore use of make (not gmake)
861      - add CC=gcc if using g77
862    o changes per discussion of AM, JMC, & EH3 today:
863      - move redundant "grid" variables out of "state" -- in preparation of
864        creating proper CF-style coordinate variables and in recognition
865        that any/all grid variables can be easily copied (eg. w/NCO) from
866        the grid files into any of the other NetCDF files
867      - *always* output grid variables with MDSIO (this will eventually be
868        changed)
869      - output MNC grid file if useMNC is true
870    o every instance of _END_MASTER() has been found and replaced with
871      _END_MASTER( myThid ) in order to satisfy certain picky Sun
872      preprocessors
873    o re-arrange diagnostics pkg initialisation:
874     - allow each package to extend the available diagnostics list
875     - add some checking and fix small problems (multi-threaded, ...)
876     - new S/R diagnostics_fill (replace fill_diagnostics):
877       look through the short list of active diag. (instead of the long list)
878       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
879    
880    checkpoint57a_post
881    o this set of changes restores TAMC compatibility
882      tested for global_ocean.90x40x15 adjoint on trough
883      (what a pain)
884    
885    checkpoint57a_pre
886    o some modifs in tools/build_options for sunos
887    o call ctrl_pack for ctrl at end for optimcycle=0
888    
889    checkpoint57
890    o add horizontal bi-harmonic viscosity for vertical velocity
891      - new parameter viscA4W (defaults to viscA4)
892      - affects only non-hydrostatic code
893      - to be done: no-slip lateral boundary conditions
894    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
895    o implement Implicit Vertical advection for pTracers
896    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
897      (implemented also for implicit vertical diffusion & advection)
898    o OBCS: extend application of tracer open boundary conditions
899      to a strip beyond the boundary of width Olx/Oly
900    o add call monitor to TAF set of required calls (flow directives)
901      and include in natl_box_adjoint
902    o untangle a few ifdefs related to cost, ctrl, autodiff
903      untangel a few ALLOW_ECCO_OPTIMIZATION
904    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
905      (theta2, salt2 in ecco_cost_weights)
906    
907    checkpoint56c_post
908    o OBCS as control variables
909      - update ctrl_ad_diff.list, obcs_ad_diff.list
910      - remove balance of obcs controls from default
911      - fix index bug nobcs in ctrl_init
912      - fix dummy fields filen in ctrl_pack
913      - add dummy weights for obcs
914    o lsopt: comment out fort.94 output
915    o optim:
916      - remove unnecessary header files
917      - adjusted namelists
918      - add xerbla.F to Makefile
919    o exf:
920      - multiple modifications of exf_check_range
921      - unit change in exf_init_runoff from [m/year] to [m/s]
922    o mdsio:
923      - i/o-vector change debugLevel from debLevA to debLevB
924    
925    checkpoint56b_post
926    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
927      is called from DO_THE_MODEL_IO
928      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
929      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
930      - clean up PTRACERS_WRITE_TIMEAVE a little
931    o add another verification experiment that tests both the cfc-pkg and
932      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
933      reactive tendencies treated inline with regular timestepping
934    o testreport previously did a lousy job of comparing small numbers, so
935      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
936      implemented in the little c-progam tmp_cmpnum.c which is embedded in
937      testreport.
938    o ptracers_monitor: bug fix for MPI
939    
940    checkpoint56a_post
941    o GCHEM: finish reorganizating the package
942      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
943        (introduces another 3D-array for each passive tracer, but only if
944        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
945        gchemTendency is not needed because the timestep is done separately)
946      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
947      - GCHEM is now---more or less cleanly---separate from PTRACERS
948      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
949        so clear to me how that should be done in a general way.
950    o CFC: improve formatting of output in CFC_ATMOS
951    o PTRACERS:
952      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
953        that ALL experiments with ptracers enable can be checked. This makes
954        GCHEM_MONITOR obsolete.
955      - include a runtime parameter PTRACERS_monitorFreq that defaults to
956        monitorFreq
957      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
958    o add PTRACERS (PTR0[1-5]) to testreport output
959    o exf_check_range:
960      * default changed to .TRUE.
961      * will check values for niter0 if debLevA, every timestep if debLevB
962      * STOP in exf_check_range if 'out of range'
963      * range chosen generous to allow for potential extema
964      TBD: a version with stricter range
965           permitted range would be runtime parameters
966    o GMredi:
967      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
968      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
969      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
970    o GCHEM:
971      - move call to GCHEM_FORCING_SEP, so that it is now called before
972        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
973      - introduced a useGCHEM runtime flag and applied it everywhere.
974      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
975        this flag is now only visible within GCHEM-pkg routines.
976      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
977        be replaced by a 3D array that is computed before thermodynamics; for
978        this, the tracer ID iTracer had to be included into the parameter list
979        of ptracers_forcing
980      - set up forward_step to call gchem_forcing, that will replace
981        gchem_forcing_int in ptracers_forcing
982      - cleaning up
983    o small cleaning of exch2: remove files that are also in eesupp/src
984    
985    checkpoint56
986    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
987    o mnc: cleanup "full" files--fixes out-of-memory problem
988    o ECCO-GODAE
989      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
990      * fully merged and updated from SIO code
991        windstress sign change affects
992        - exf_inscal_[u/v]stress
993        - sign of xx_tau[u/v] adjustments
994        - signs in cost_scat
995      * ctrl_get_gen: avoid update of tau[u/v] for first few days
996      * natl_box_adjoint updated and compressed
997      * 2-level checkpoint switch added
998        (tested in EXP. 1 of natl_box_adjoint)
999      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1000    o SVD
1001      * first complete, non-hacked version for SVD calculations
1002      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1003        performed via direct access files admtlm_vector.it????
1004        (via ctrl_[un]pack)
1005      * optimcycle is used for ARPACK iteration counter
1006        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1007      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1008        and add linear transforms where necessary
1009      * controls are initial/final SST, SSS (can be extended; need to check
1010        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1011    o mdsio: filename info to both stderr, stdout
1012    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1013      from sign change
1014    
1015    checkpoint55j_post
1016    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1017      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1018    o add consistent build directories and .cvsignore files to verification
1019    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1020    o make all subroutines 30 or less characters in length for certain older
1021      compilers to work (a thorough search only turns up two routines in
1022      pkg/ptracers)
1023    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1024      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1025    
1026    checkpoint55i_post
1027    o change arrays for total vertical diffusivity (2.D if explicit,
1028      3.D if implicit) ; each ptracer uses its own background value.
1029    o added mnc/NetCDF output capability to ocn_compon_interf
1030      - added bits to verification/cpl_aim+ocn so that it can run on
1031        ITRDA and other clusters without the mpirun "-wd" option
1032    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1033      configuration
1034    o give MNC the ability to create additional files rather than
1035      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1036      - the default is just less than 2GB which is a practical limit
1037        on many systems
1038    o Compute the non-local term using either KPP vertical diffusivity (=default)
1039       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1040    
1041    checkpoint55h_post
1042    o add verification test "vermix"
1043    o remove all the *_ioinc flags and replace with the single global
1044      outputTypesInclusive flag
1045    o allow to set a vertical profile of vertical diffusivity for T & S
1046    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1047    o useMNC moved from data.mnc to data.pkg
1048    
1049    checkpoint55g_post
1050    o Renaming carbon AD experiments to comply with testreport conventions
1051    o Updating adjoint of Held-Suarez hs94.1x64x5
1052    o Fixing directives for non-ECCO forward_step, after ECCO directives
1053      have been fixed to avoid recomp. of do_oceanic_phys
1054      Works well for global_ocean.90x40x15,
1055      but recomp. issue remains for carbon
1056    o Updating adjoint output for natl_box_adjoint after
1057      pkg/ecco has been modified (see taga c55d_post)
1058    
1059    checkpoint55f_post
1060    o rename to timeave_init_fixed
1061    
1062    checkpoint55e_post
1063    o some delicate re-shuffle of store directives to avoid one
1064      extra call of do_oceanic_physics
1065      affects ecco_the_main_loop.F, do_oceanic_physics.F
1066      checkpoint_lev1_directives.h
1067    o NB: this may break global_ocean adjoint temporarily,
1068      but it is clear how to fix it. Will do later, need this now.
1069    
1070    checkpoint55d_post
1071    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1072    o ecco_cost_weights is modified to 1x1 runs
1073    o modifs to allow observations to be read in as
1074      single file or yearly files
1075    o enable to read exf forcing fields as either
1076      single file or yearly files (flag useExfYearlyFields)
1077    checkpoint55d_pre
1078    
1079    o switch between 2-level and 3-level checkpointing
1080    o add ability of MNC to write local and "partial" (eg. 2D slices where
1081      the full 3D field is never actually stored) arrays to NetCDF files
1082      with the correct (that is, the complete multi-dimensional) set of
1083      array indicies
1084      - used in mom_vecinv() to write the diagFreq output
1085      - tested (demonstrated) in verification/aim.5l_cs
1086    o further mnc-ification
1087      - add verification/lab_sea to the list with mnc setups
1088      - fix undefined mnc v-names in cd_code
1089      - add kpp to mnc output (both snapshot and timeave)
1090    o non-hydrostatic code
1091      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1092        in calc_gw.F
1093      - defaults to viscAh
1094      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1095        friction or Leith) in non-hydrostatic mode, as long as there is
1096        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1097    o pkg/cost
1098      extend simple cost functions to treat time mean quantities
1099      (T,U,V) via cost_accumulate_state from cost_tile
1100    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1101        be 2 times larger than the minimum size the advection scheme requires.
1102        now get a perfect conservation of salt in advect_cs test-exp (updated)
1103    o GGL90 (Gaspar's TKE mixed layer)
1104      - add horizontal diffusion of TKE, requires exchanges in
1105        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1106        default. In OPA there is no horizontal diffusion of TKE but the
1107        mixing coefficients are computed from a horizontal average of TKE of
1108        6 points or so. I think that diffusion has a little more physical
1109        justification.
1110      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1111        was in vain)
1112      - mask tke-variable in ggl90_init
1113    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1114    o fix biharmonic diffusion on CS-grid.
1115    o more obcs stuff
1116      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1117        for reading boundary values. This routine is called from
1118        obcs_prescribe_read
1119      - updated obcs_check
1120      - changed sponge layer relaxation parameter units for days to seconds
1121      - turned off sponge layer by default
1122      - changed argument list of OBCS_CALC to myTime+deltaTclock
1123      - fixed about 35 bugs in obcs_external_fields_load
1124    
1125    checkpoint55c_post
1126    o obcs stuff
1127      - new runtime flags useOBCSprescribe, useOBCSbalance
1128      - re-arranged obcs_calc
1129      - moved exf_getobcs to obcs_prescibe_read
1130        obcs_prescibe_read is called after ORLANSKI stuff
1131        and independent of it (executable can contain all).
1132      - updated obcs_check
1133      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1134        These may be necessary only if tangential velocities are
1135        prescribed at OB, not sure, needs testing.
1136    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1137      which simplifies the calls and passes the ifc check-bounds test
1138    
1139    checkpoint55b_post
1140    o add a 2D scalar, Z location, exchange_2 routine.
1141    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1142      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1143      affects advect_cs results (for the wrong reason): update output.txt
1144    o use a more standard discretization for biharmonic viscosity ;
1145     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1146      affects results of dome set-up: update output.txt
1147    o fix gad_advection.F (CubedSphere part), back to version 1.23
1148    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1149    
1150    checkpoint55a_post
1151    o merged code to
1152      * prescribe/read time-dependent open boundaries
1153        (works in conjunction with exf, cal)
1154      * sponge layer code for open boundaries
1155      * each boundary N/S/E/W now has its own CPP option
1156        (healthy for the adjoint)
1157    
1158    checkpoint55
1159    o up-to-date adjoint of previous breaks
1160      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1161      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1162      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1163      - carbon: * remove tr1-related adjoint verification
1164                * add ptracer as control variable
1165    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1166      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1167    
1168    checkpoint54f_post
1169    o in verification/carbin/ remove experiment related to
1170      ALLOW_PASSIVE_TRACER (array tr1 etc)
1171      code_ad/ input_ad/ results_ad
1172    
1173    o add two new packages
1174      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1175        + subject to optimization (memory)
1176      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1177        + subject to reordering (many GOTOs in the original code)
1178        + so far opps is called for every (i,j) point, and then operates in
1179          the vertical; one may want to reorder the scheme in order operate in
1180          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1181          fields)
1182    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1183      - all verification tests compile and run with linux_ia32_g77
1184      - defaults are compatible with current input files--nothing
1185        should change if you were not previously using MNC
1186      - MNC output has been added in numerous places (eg. timeave)
1187        but there are still a few writes not yet do-able with MNC
1188        (this is in progress)
1189      - flags now allow for either/or/both use of MDSIO and MNC and
1190        documentation will soon follow
1191      - numerous small formatting cleanups for ProTeX
1192    o add version info (via BUILD_INFO.h) to MNC and stdout
1193    
1194    checkpoint54e_post
1195    o add two new packages
1196      - pp81 (Packanowski and Philander, 1981), Richardson number and
1197        stratification dependent mixing
1198      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1199      - these scheme operate in a similar manner as KPP (without ghat, of
1200        course), however there is only one diffusivity that is used for both
1201        temperature and salinity (and passive tracers)ç
1202    o add offline package
1203    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1204      provided by Stephanie Dutkiewicz
1205    o genmake2: add ability to search for C compilers and cleanup test output
1206      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1207    
1208    checkpoint54d_post
1209    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1210    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1211      leading to additional shift by 5 days each year of integration
1212       (i.e. leading to considerable offset over the years)
1213    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1214    o start with no AB and no initial filtering (staggerTimeStep):
1215      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1216    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1217      (external loading & cpl import/export stay in forward_step.F)
1218    o update coupling interface to work with new staggerTimeStep
1219    o change MDSIO ptracers_pickup.
1220    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1221    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1222    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1223    
1224    checkpoint54c_post
1225    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1226      this affects (truncation error) output.txt of test-exp:
1227       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1228    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1229    o change Qnet to always be the net heat flux, (+upward).
1230      affects (truncation error) output of natl_box exp.: updated
1231    o define the max number of passive tracers in PTRACERS_SIZE.h
1232    o start to test mnc routinely in exp0
1233    o add sea-ice loading (sIceLoad) as a new forcing field.
1234    
1235    checkpoint54b_post
1236    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1237       impressive on Altix and Opteron systems)
1238    o diagnostics can now write NetCDF files through the mnc package
1239    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1240    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1241    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1242      affects (truncation error) output of lab_sea & natl_box exp.: updated
1243    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1244    
1245    checkpoint54a_post
1246    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1247    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1248    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1249    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1250      + internal_wave (shift in writing cg2d_ini_res)
1251    checkpoint54a_pre
1252    
1253    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1254      - modified verification/lab_sea and natl_box_adjoint accordingly
1255    
1256    checkpoint54
1257    checkpoint53g_post
1258    o prepare splitting of thermodynamics: store convect.counter in common block
1259    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1260      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1261    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1262    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1263    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1264    o restore adjointability
1265    
1266    checkpoint53f_post
1267    o modifications that affect AIM experiment results (update output.txt):
1268      - no advection of S at top interface Nr (pkg/generic_advdiff)
1269      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1270    o AIM pkg:
1271      - include stability function into surf.Flux derivative relative to Tsurf
1272      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1273    
1274    checkpoint53e_post
1275    o merged cylindrical coord configuration
1276    o added rotating_tank experiment
1277    checkpoint53e_pre
1278    
1279    checkpoint53d_post
1280    o faulks upgraded: re-generate output.txt that have changed:
1281       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1282    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1283    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1284    o added Sadourny discretization of Coriolis
1285      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1286      - re-enabled use of omega3 (useAbsVorticity)
1287    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1288      vector-invariant equations
1289      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1290    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1291      hopefully without new bugs
1292      - still to do: biharmonic friction for non-hydrostatic w
1293    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1294    o regenerated output for global_ocean_ebm (using -ieee)
1295    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1296      of mom_common/
1297      - simple re-arrangement of instructions within computing loop
1298    checkpoint53d_pre
1299    
1300    checkpoint53c_post
1301    o new version of coupler for AIM+thSIce and Ocean models
1302     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1303     - land: change Evaporation of snow
1304     - aim with thSIce: fix bug in snow-precip.
1305    o changes to calc_gw.F
1306     - bug fix for w^2 term near the bottom boundary
1307     - (hopefully) improve the lateral slip boundary condtions for use with
1308        partial/looped cells
1309      - because the bug fix changes two verification experiments anyway (exp5
1310        and plume on slope), change the lateral boundary condition from half slip
1311        to the value of no_slip_sides
1312    o ebm package wasnt quite up to the parallel task. Fixed that.
1313    o Adjoint of EBM package + verification
1314      * TLM OK
1315      * ADM not sufficient accuracy yet (needs further testing)
1316    
1317    checkpoint53b_post
1318    o Commiting new energy balance model to repository
1319      * package is pkg/ebm
1320      * verif. is verification/global_ocean_ebm
1321      * references are in ebm_driver.F
1322    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1323    C        Global thermohaline circulation. Part I:
1324    C        Sensitivity to atmospheric moisture transport.
1325    C        J. Climate 12(1), 71-82
1326    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1327    C        Global thermohaline circulation. Part II:
1328    C        Sensitivity with interactive transport.
1329    C        J. Climate 12(1), 83-91
1330    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1331    C        Destabilization of the thermohaline circulation
1332    C        by atmospheric eddy transports.
1333    C        J. Climate 7(12), 1870-1882
1334    o Will need long integration testing.
1335    checkpoint53b_pre
1336    
1337    o created pkg/mom_common in preparation for variable viscosity code
1338    o renamed and split ini_mnc_io
1339    o pkg/land: only liquid water can diffuse or run-off
1340    o AIM using land: soil wetness availability account for snow
1341    o added printMapIncludesZeros to EEPARMS namelist
1342    
1343    checkpoint53a_post
1344    o restore TAMC compatiility for exf_constants.h
1345      (no usage of _d in .h)
1346    o Additional storing in KPP in an attempt to fix
1347      TAMC problem with adjoint of KPP code.
1348      (no success...)
1349      Identical code works fine with TAF.
1350    o Fixed verification/natl_box_adjoint experiments.
1351      Initial conditions for Experiments 4 and 5 are now
1352      set to "SEAICE_initialHEFF=0", which is more reasonable,
1353      and hence gives results closer to that of Experiment 2.
1354      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1355    
1356    checkpoint53
1357    o stable checkpoint with up to date adjoint
1358      TLM tests only run for 1st grdchk at the moment. Its unclear if
1359      this is a code problem or a problem with resetting code for g_
1360      variables that is being autogenerated wrong.
1361      Otherwise:
1362       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1363       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1364         are both still in chaos following their security messes.
1365    
1366    checkpoint52n_post
1367    o various build (mostly genmake2) changes including:
1368      - ability to build/run more easily within Cygwin and MacOS X
1369      - more complicated Makefiles with a stronger dependence on Gnu Make
1370    o pkg/seaice modifications
1371      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1372        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1373        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1374      - changed proxy for geostrophic velocity and updated
1375        verification/lab_sea/results/* accordingly
1376      - removed ADI dynamic solver from pkg/seaice
1377      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1378        they caused a segmentation fault under certain circumstances
1379      - removed unused field WATR
1380    o bug fix in exf-package:
1381      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1382         now reflect that.
1383    o small fixes in the cal-package:
1384      - set reference date to first of January for the 'model'-calendar
1385      - failing of cal_CheckDate in cal_FullDate now actually results in a
1386        warning
1387    o small modifications in exf-package to increase flexibility:
1388      - change climtempfreeze from a constant to a runtime parameter that
1389        is specified in data.exf_clim (default = -1.9)
1390      - introduce runtime parameter windstressmax (default = 2.0) that is
1391        specified in data.exf
1392    o fix in pkg/thsice:
1393      - update Evap (Tsf changes) to be consistent with Latent heat flux
1394      - maintain snow precipitation unchanged (even if Tsf >=0).
1395     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1396    
1397    checkpoint52m_post
1398    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1399      this does not change any of the results, because myIter=0 in swfrac always
1400      lead to jwtype=2 (the default anyway), but the call makes little sense
1401      as a default
1402    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1403    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1404      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1405    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1406    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1407    o extending useSingleCpuIO option to work with new exch2 I/O format
1408      - old-style, missing-tile I/O is still accessible by defining CPP
1409        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1410    o monitor package can write to NetCDF files and/or STDOUT
1411    o fix re-definition bug in MNC_GRID_INIT_ALL()
1412    o doc/api_reference added
1413      - a framework for building an API Reference Manual using all
1414        the "protex" comments embedded in the code
1415      - see pkg/generic_advdiff, pkg/mnc for examples
1416    o MNC:
1417      - make myThid the last argument for all subroutines
1418      - new default for the grid files: NO halos
1419      - add useMNC and other run-time flags
1420      - separate per-file-group handling of the unlimited dimension
1421      - early initialization of MNC w/ flags read at the eeboot stage
1422        and lookup tables set in initialize_fixed
1423      - write all MNC output to a freshly-created directory
1424    o thermodynamics sea-ice (thsice) is now tested with testreport.
1425    o test exp. advect_cs: use the standard cs32 grid ; update output.
1426    o Added functionality to grdchk:
1427      pick global i,j,k position (or nearest wet) where to perform check.
1428    
1429    checkpoint52l_post
1430    o new land formulation:
1431      a) use ground enthalpy as prognostic variable to ensure exact
1432         energy conservation.
1433      b) account for water temperature and for latent heat of freezing
1434         in all processes (rain, run-off, ground storage)
1435      c) compute surface and ground temperature implicitly.
1436    o aim_v23 modification for new land model:
1437      a) Treat separately land / ocean / sea-ice surface fluxes
1438         to allow implicit computation of land & sea-ice surface temp.
1439      b) add snow precipitation.
1440    checkpoint52l_pre
1441    
1442    o fix problem (when 1 tile is empty) in min/max monitor.
1443    o fix bug in timeAve (u,vZetatave in common block)
1444    o no restoring terms under ice for pkg/seaice
1445    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1446    o bug fix for pkg/seaice pickups
1447    o change MNC call locations and add coordinate attributes
1448    o mask vorticity at the corner ; affects global_ocean.cs output
1449    o fix ini_curvilinear_grid ; test CS experiments with mpi
1450    o aim.5l_cs: modify sea-ice fraction input file ; update output
1451    o exf: Adding simple range check routine for exf fields after read
1452    
1453    checkpoint52k_post
1454    o removed top-level directory "diags"
1455      - we migrated these functions to pkg/timeave a long time ago
1456    o fixed bug introduced in pkg/monitor
1457    o accuracy ctrlprec = 32 insuffient for gradient checks using
1458      averaged fields (I/O via cost_averages)
1459      -> use ctrl.h in active_file*.F to control I/O precision.
1460    o paramter list of CALL ADTHE_MAIN_LOOP
1461    o added initial do_the_model_io to ecco
1462    o set all ...Freq to zero after cost_final
1463      taveFreq, dumpFreq, pChkptFreq
1464    o MAIN and ECCO differentiability restored
1465    
1466    checkpoint52j_post
1467    o fix nchklev in tamc.h for global_ocean...
1468    o Bringing flow and store directives up-to-date
1469    o Really weird thing!
1470      call do_the_model_io from the_main_loop with parameters
1471      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1472      TAF places a faulty re-call of initialise_varia
1473      after cost_final call which should not be there!
1474    checkpoint52j_pre
1475    
1476    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1477      error messages
1478    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1479    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1480      debug output
1481    o modfied mdsio_writefield.F to handle non-global files under exch2
1482    o update AIM Cubed-Sphere exp (aim.5l_cs):
1483      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1484    o update AIM Equatorial Channel exp:
1485      use standard aim_v23 pkg and change the SST fields to be more realistic.
1486    o globalFile now works with exch2
1487    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1488      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1489    o limit timeave output for hi-res integrations
1490    
1491    checkpoint52i_post
1492    o removed CPP_EEOPTIONS.h from verification/*/code
1493    o updated the tiling for global_ocean_pressure
1494    checkpoint52i_pre
1495    
1496    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1497      the old pkg/aim).
1498    
1499    checkpoint52h_pre
1500    o shortened offending lines in exch2_send_rx?.template
1501    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1502    o genmake2: add build & execute test for NetCDF code
1503    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1504      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1505    o added useSingleCPUIO flag to monitor.F and mon_out.F
1506    o added temporary hack for sea-ice dynamics on the cube:
1507      metric terms are ignored and it is assumed that
1508      there is no sea-ice on cube faces 1, 2, 4, and 5.
1509    
1510    checkpoint52f_post
1511    o added exch2 cube routines to pkg/exch2
1512    o modified hs94.cs-32x32x5 to use it
1513    o added new grid files to hs94.cs-32x32x5
1514    checkpoint52f_pre
1515    
1516    checkpoint52e_post
1517    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1518      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1519    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1520      to work with implicit vertical advection and AB ;
1521    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1522    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1523     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1524    checkpoint52e_pre
1525    
1526    o fix bug in impldiff when Nr=1 or Nr=2.
1527    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1528    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1529    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1530      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1531    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1532    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1533    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1534    
1535    checkpoint52d_post
1536    o re-tiled many expts to allow comparison in multi-processor mode
1537      - updated output accordingly
1538      - changed hs94.128x64x5 to use intial T from file rather than use the
1539        random number generator
1540    o add infrastructure in model routines for fizhi and gridalt packages
1541    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1542    o changes to permit hi-res, cubed-sphere, configuration
1543      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1544      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1545      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1546        of surface winds for the cube
1547      (A verification experiment, based on global_ocean.cs32x15, but with
1548       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1549       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1550       complete with example surface forcing files and matlab scripts to look
1551       at the output and compare it with that of global_ocean.cs32x15.)
1552    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1553       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1554       to conform to the common rule.
1555    o check-in the first version of the coupler + interfaces for multi-components
1556       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1557       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1558       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1559       - ocean and atmos. share the same horizontal grid (no interpolation).
1560       - exchanges between component and coupler is done in forward_step
1561    o new verification experiment, cpl_aim+ocn:
1562       coupled ocean - AIM atmosphere on cs32 grid.
1563    
1564    checkpoint52d_pre
1565    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1566    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1567    
1568    checkpoint52c_post
1569    o Fixing OPTIONS files for use of exf:
1570      - ALLOW_ECCO not needed
1571      - ECCO_CPPOPTIONS.h should not be included from
1572        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1573        as has been the case in the past
1574      - All cal/exf related options are currently set in
1575        single header file. Should remain so until we
1576        agree on a consistent new policy.
1577    o Removed all CPP options for cal package.
1578      cal has no more CPP options.
1579    o modified STOREs in GAD_ADVECTION
1580    o corrected key comp. for passkey
1581    
1582    checkpoint52b_post
1583    o new version: "thsice" of thermodynamic sea-ice pkg:
1584     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1585     - modify fluxes but do not change theta directly;
1586     - light cleaning of bulk_force pkg (still needed with thsice).
1587     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1588       + output_thsice.txt to test thsice & bulk_force pkgs.
1589    o put back grid & coriolis monitor output.
1590    checkpoint52b_pre
1591    
1592    o call "do_the_model_io" at the beginning (=> dump initial state)
1593    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1594    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1595      (need info on NUMBER_OF_PTRACERS)
1596    o missing PTRACERS headers in some routines
1597    o default tamc.h in pkg/autodiff supposed to crash
1598      to ensure proper customization
1599    
1600    checkpoint52a_post
1601    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1602      - moved surfaceTendencyTice from pkg/seaice to main code
1603      - subroutine FREEZE_SURFACE now limits only surface temperature
1604        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1605        => new output.txt for global_ocean.cs32x15 & global_with_exf
1606      - keep the old version of FREEZE for backward compatibility;
1607        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1608      - corresponding modifs for TAF directives
1609    o added surface flux output variables to TIMEAVE_STATVARS
1610    o time-averaged output for pkg/ptracers
1611    o fix problem with ECCO-related divided adjoint
1612      snapshot file was missing some ad-variables,
1613      but no warning issued by TAF
1614    
1615    checkpoint52a_pre
1616    o some bug fixes for #undef REAL4_IS_SLOW
1617    
1618    checkpoint52 = ecco_c52_e35
1619    o after testing adjoints of checkpoint51u_post
1620    
1621    checkpoint51u_post
1622    o this is the post-merge tag of the ecco-branch
1623      (needs another clean checkout and re-testing)
1624    o various natl_box_adjoint configs and results
1625      but no input fields
1626    o obcs adjoint not yet merged!
1627    o adding ECCO global 1x1 and 2x2 degree configs
1628    o updated/extended some store directives for seaice
1629    o pkg/ecco now containes ecco-specific part of cost function
1630    o top level routines the_main_loop, forward_step
1631      supersede those in model/src/
1632      previous input data.cost now in data.ecco
1633      (new namelist ecco_cost_nml)
1634    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1635    
1636    checkpoint51t_post
1637    o this is the pre-merge tag of the ecco-branch
1638    
1639    checkpoint51s_post
1640    o cleanup: removed various obsolete #define-s
1641    o pkg/grdchk
1642      - renamed 'ph-grd 3' to 'grad-res'
1643      - merged from ecco-branch
1644        (remaining bug fixes for obcs gradient checks)
1645      - additional high-precision output for testreport
1646        (grep for 'precision_grdchk_result')
1647    
1648    checkpoint51r_post
1649    o cleaned up or removed CPP_OPTIONS.h files
1650    o updated results for some of the tests to reflect the new
1651      optfiles (-ieee: -O0 instead of -O3)
1652    
1653    checkpoint51q_post
1654    o cd_code:
1655      - moved cd_scheme.F -> cd_code_scheme.F
1656      - separate read_checkpoint from cd_code_ini_vars.F
1657      - separated cd_code part from write_checkpoint
1658      - updated AD_SOURCE, generated .flow
1659      - added CD_CODE_VARS.h to the_main_loop
1660      - Moving cd_code specific store dir.s to pkg/cd_code
1661    o ctrl package totally restructured
1662      - pack/unpack now optional and decoupled from
1663        xx_/adxx_ I/O
1664      - ctrl_pack/unpack cleaned
1665        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1666      - confined inclusion of AD_CONFIG.h to where necessary.
1667    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1668    
1669    checkpoint51p_post
1670    o create initial cd_code package
1671      - WARNING: the initialization of fields within packages
1672        is broken because INI_FIELDS (where READ_CHECKPOINT is
1673        called) is called *before* PACKAGES_INIT_VARIABLES.
1674        This seems to be backwards since
1675        1) its important to initially zero the entire field including
1676           the "halo" region
1677        2) zeroing needs to be done *before* reading pickup info
1678           and the pickup call might or might not happen in any
1679           particular run
1680      - this needs an overhaul for R2
1681    o cleanup verification/*/code/GMREDI_OPTIONS.h
1682    o cleanup testreport
1683    
1684    checkpoint51o_post
1685    o bringing AD-related verif's up to date with genmake2
1686      - carbon/
1687      - global_ocean.90x40x15/
1688      - hs.94.1x64x5/
1689      - (front_relax/ )
1690    o (more) consistent directory structure for AD-related verif.'s
1691    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1692    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1693    o bug fix in find_alpha.F for MDJWF:
1694      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1695        change rho -> rho-rhoConst
1696      - replace call find_rho to find_rhonum
1697    o initialisation of rFlx extended to full array (required by TAF)
1698      and shifted to thermodynamics
1699    o removed PTRACERS.h in ptracers routine
1700    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1701    o Correcting initialisations for fVerU, fVerV.
1702    o helping TAF to recognize dependency on kUp for
1703      fVerU, fVerV
1704    o Replacing delZ by delR in pkg/ctrl/
1705    checkpoint51o_pre
1706    
1707    o undid all of cp51 pending some cleanups and discussion
1708    o added the [#include "AD_CONFIG.h"] statement to all files that need
1709       it for adjoint/tl #defines
1710     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1711     o removed tools/genmake since it no longer works
1712    
1713    checkpoint51n_post
1714    o modifications to make FREEZE flux visible to pkg/kpp
1715      - moved surfaceTendencyTice from pkg/seaice to main code
1716      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1717      - subroutine FREEZE now limits only surface temperature
1718        (this means new output.txt for global_ocean.90x40x15,
1719         global_ocean.cs32x15, and global_with_exf)
1720    o added surface flux output variables to TIMEAVE_STATVARS
1721    
1722    checkpoint51n_pre
1723    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1724    o added [#include "AD_CONFIG.h"] to all files that use the following
1725      defines:
1726      - ALLOW_ADJOINT_RUN
1727      - ALLOW_TANGENTLINEAR_RUN
1728      - ALLOW_ECCO_OPTIMIZATION
1729    
1730    checkpoint51m_post
1731    o incorporating changes to get TAMC/TAF working in genmake2
1732      - added new TAMC/TAF targets to the Makefile
1733      - various cleanups related to package handling
1734      - these changes should have no impact on the forward model
1735    
1736    checkpoint51l_post
1737    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1738     - faster algorithm for cal_addtime.F
1739     - higher precision arithmetic, where needed
1740     - pkg/exf *startdate variables changed from calendar date to
1741       model integration time
1742    
1743    checkpoint51l_pre
1744    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1745    o enable to apply restoring on S & T only in a latitude band.
1746    o update output (external_forcing_surf modif. change truncation errors)
1747       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1748    
1749    checkpoint51k_post
1750    o change default to: useNHMTerms=.FALSE.
1751     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1752       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1753     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1754        exp1, ideal_2D_oce
1755     - change data file of oceanic exp (leave the results unchanged for now)
1756       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1757    o set gravitySign automatically according to the vertical coordinate used
1758      (and change sign: back to "logical" value: +1 when R increases downward)
1759    o added an include barrier to the default CPP_OPTIONS.h and
1760      removed the #include "PACKAGES_CONFIG.h" from it
1761    o fix a bug in mom_fluxform (from chk51j_post)
1762    
1763    checkpoint51j_post
1764    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1765    o adjusted some flow directives (dynamics, thermodynamics)
1766    o added cubed-sphere case to test cost function
1767    o heckpoint_lev?_directives.h now include
1768      pkg-specific directives, whenever those are enabled.
1769    o Moving pkg-specific flow directives to corresponding pkg
1770      Moving pkg-specific differentiation list to corresponding pkg
1771      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1772      ---> conventions are
1773           - pkg_ad.flow
1774           - pkg_ad_diff.list
1775           - pkg_ad_check_lev?_dir.h
1776    
1777    checkpoint51i_post
1778    o merge of the branch-genmake2
1779      - knowingly breaks the older genmake
1780      - automatic generation of all ALLOW_${PKG_NAME} defines
1781      - new testreport supersedes older testscript
1782    o large number of package inclusion and header cleanups
1783    checkpoint51i_pre
1784    
1785    o new output for adjoin of global ocean vector invariant
1786    o fix for checkpoint of thermodynamic seaice and bulk_force
1787    o Steph gchem various cleanups
1788    
1789    checkpoint 51h_pre
1790    o fixed some single quotes
1791    o modify gchem pkg to be more versatile
1792    o modifications to clean up dic pkg
1793    o add pkg/cfc
1794    
1795    checkpoint51g_post
1796    o provide links for ARPACK and ADM*TLM
1797    o start removing verification/vero/
1798    o update AD-related stuff
1799      (in particular some IF-statements in model/src/ routines)
1800    o adding to verification/global_ocean.90x40x15/ adjoint of
1801      vector invariant setup
1802    
1803    checkpoint51f_post
1804    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1805    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1806      of tracer Green's fucntions for ocean inversion project.
1807    
1808    checkpoint51f_pre
1809    o Added on-the-fly spatial interpolation capability
1810        "USE_EXF_INTERPOLATION" to pkg/exf.
1811      - This is a temporary Cartesian-grid hack until
1812        the super-duper ESMF coupler becomes available.
1813      - See verification/global_with_exf/README for usage example.
1814      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1815        flags and modified pkg/seaice accordingly.
1816    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1817        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1818        non-local transport term.
1819    
1820    checkpoint51e_post
1821    o pkg/mom_vecinv:
1822      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1823      - add time-ave diagnostic of vorticity advection.
1824    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1825    o atmospheric geopotential: - include water vapor effect;
1826                                - use p^kappa in p* scaling.
1827    o land pkg: read initial state from files.
1828    o AIM : add stratospheric drag in the upper level
1829    
1830    checkpoint51d_post
1831    o change function ILNBLNK (=> last non-blank char.) to return zero
1832      (instead of the string length) when the string. char is empty
1833    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1834    o modif's to restore TAMC compatibility
1835      - avoid "_d" constructs in PARAMETER declarations
1836      - avoid interrupting lines by comment lines
1837    o Use cluster local disks for purely local I/O
1838      vs. globally visible disks needed for ctrl stuff
1839      (merged from ecco-branch)
1840      - new active_file_loc... and mdsio_..._loc routines
1841      - affected packages: autodiff, ctrl, grdchk, mdsio
1842    
1843    checkpoint51c_post
1844    o introducing integer flag debugLevel
1845      - debLevZero: suppress all output
1846      - debLevA: standard
1847      - debLevB: equivalent to current debugMode=.TRUE.
1848    o introducing pathname variable mdsioLocalDir for mdsio
1849      that can be specified at runtime
1850      (relevant for cluster I/O to local disk)
1851    `
1852    >>>checkpoint51b_post
1853    adjoint of ptracers
1854    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1855    o extended state in checkpoint_lev?, etc.
1856    o alternative ctrl/cost with tr1 or ptracer
1857    o new comlev1_bibj_ptracers
1858    o new ptracers.flow
1859    o made ptracers_forcing same as external_forcing_s
1860    o added verification for adjoint with ptracers
1861      - adm. grdchk fail so far
1862      - tlm. grdchk OK
1863      - checked tapelev/comlev recomputations: OK
1864    <<<checkpoint51b_pre
1865    
1866    checkpoint51a_post
1867    o added code for biogeochemistry package
1868      - new pkgs: dic, gchem
1869      - new subroutine in ptracers
1870    o modify code for biogeo packages
1871      - in model/src and pkg/ptracers
1872    
1873    checkpoint51
1874    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1875      - autodiff, ctrl, exf, grdchk, seaice
1876      kept separate packages
1877      - cost, ecco, obcs
1878    o updating verification/internal_wave, verification/lab_sea
1879      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1880    
1881    checkpoint50i_post
1882    o Preparing next differentiable checkpoint and sync
1883      of MAIN vs. ecco-branch
1884      - 1st step: this one is differentiable
1885      - 2nd step: next(! not this) checkpoint will have updated packages
1886                  from ecco-branch)
1887    
1888    checkpoint50h_post
1889    o new package "land": provide surface BC for AIM.
1890    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1891    o AIM: use true log-P extrapolation for near surface temp (= as in
1892        F.Molteni paper) ; update aim.5l_cs output.
1893    o New variable in PARM03 for more flexible pickups
1894    o somewhat cleaned package initialisation sequence for
1895      ctrl/ cost/ ecco/ in packages_... routines
1896    
1897    checkpoint50g_post
1898    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1899      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1900      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1901        made the default because of faster convergence than ADI
1902    
1903    checkpoint50f_post
1904    o exf totally restructured
1905      - replaced all exf_set_ routines by one generic exf_set_gen.F
1906        and made sure it's still differentiable
1907      - split exf_getffields.F into new exf_bulkformulae.F
1908      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1909      - updated adjoint/makefile and relevant verif. accordingly
1910    
1911    checkpoint50f_pre
1912     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1913          + change Evap over land. (update aim.5l_cs output)
1914     o added missing .cvsignores and made uniform across expts
1915     o changed configuration of tidal_basin_2d expt
1916     o added pkg/debug functions for tracing code in fatal crashes
1917     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1918     o new fn in pkg/monitor to stop model if solution grows too big
1919     o removed lots of single quotes from comments
1920    
1921    checkpoint50e_post
1922    o make KPP work with PTRACERS
1923     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1924       nearly a copy of kpp_transport_s
1925     - there is no analogue to SurfaceTendencyS, so I have to use
1926       gPtr(of the surface layer) instead
1927    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1928    checkpoint50e_pre
1929    
1930    checkpoint50d_post
1931    o change kpp output from multiple-record state files to single-record state
1932      files analogous to write_state.F
1933    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1934      analogous to the cg2d-related output.
1935    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1936      so that writing to internal file fn (with length 512) fails.
1937    checkpoint50d_pre
1938    
1939    checkpoint50c_post
1940    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1941    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1942    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1943    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1944    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1945    
1946    checkpoint50c_pre
1947    Merging from release1_p13:
1948    o bug fix for pkg/seaice dynamic solver
1949    o Added SEAICE_initialHEFF to pkg/seaice
1950    
1951    checkpoint50b_post
1952    o store u*,v* in gU,V instead of in guNm1,gvNm1
1953    o in order to put the momForcing out of the Adams-Bashforth:
1954      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1955      to timestep.F
1956    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1957    o re-generate output for highly sensitive test-exp:
1958       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1959    
1960    checkpoint50b_pre
1961    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1962    o corrected CPP option mismatch in exf_Bulk... functions for case
1963      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1964    
1965    checkpoint50a_post
1966    o Bug fix for merging between c50 and KPP.
1967      ikey was passed from thermodynamics to kpp_calc via
1968      common block rather than being recomputed in kpp_calc,
1969      in contradiction with new key itdkey.
1970      New key ikppkey created, and tamc.h headers updated.
1971    
1972    checkpoint50
1973    - 2nd step of merge with ecco-branch:
1974      merge changes in ecco-branch back into main trunk
1975    - bug fix in find_alpha
1976    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1977    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1978    - merged some sliced AD support routines
1979    
1980    checkpoint49
1981    merged from ecco-branch:
1982    o exf:
1983      - Enable initialisation of forcing fields to constant
1984        (runtime) values.
1985      - in exf_getffields.F
1986        Reduce i-/j-loop to interior domain, discarding overlaps.
1987        That also fixes wrong TAF-key computations for key_1, key_2
1988        with bulf formulae.
1989      - exf_init.F modify #ifdef for exf_init_evap
1990      - exf_getffieldrec.F, ctrl_getrec.F
1991        The following INT-usages are not safe:
1992          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1993          fldcount = int(fldsecs/fldperiod) + 1
1994        and were modified.
1995    o autodiff: checkpoint_lev...
1996      - updated storing for bulk formulae (some arrays were missing)
1997      - added state for seaice package
1998      - synchronized with main branch
1999    o DIVA:
2000      Modif.s in
2001      - the_main_loop.F
2002      - the_model_main.F
2003      and added cost_final_restore.F cost_final_store.F
2004      o With these changes, it is possible to fully separate
2005        the first forward run to compute the cost function (mdthe_main_loop)
2006        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2007        into separate model executions.
2008        This enables better tuning of DIVA to given queue sizes.
2009      o Loss of cost function value in consecutive DIVA runs is
2010        fixed by storing to 'costfinal' file.
2011      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2012        beginning/end of adjoint integration is accounted for.
2013      The current changes apply to TAF-1.4.26.
2014      TAF has one remaining bug, requiring one manual change
2015      (see MITgcm manual).
2016    o cal: synchronized between MAIN and ecco-branch
2017    
2018    checkpoint48i_post
2019    o Changes to restore differentiability of code w.r.t. previous tag
2020      (mostly adding new routines to make list and replacing
2021      pressure by totPhiHyd).
2022    o Updated and merged grdchk package
2023      - has both ADM and TLM checks
2024      - works for single- and multi-proc.
2025      - output cleaned
2026      - worked successfully for parallel DIVA
2027    o genmake:
2028      - Adding -platform=SP4
2029      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2030    o Modif. for DIVA:
2031      ctrl_unpack should not be called in intermediate DIVA interval.
2032      (similar thing would apply for active files such as
2033      tbar, sbar, psbar, which should not be reinitialised;
2034      only relevant for ecco-branch)
2035    
2036    checkpoint48h_post
2037    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2038    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2039    o Added SEAICE_initialHEFF to pkg/seaice
2040    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2041    
2042    checkpoint48g_post
2043    --- EOS:
2044    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2045      store total Potential in totPhyHyd for diagnostics & EOS.
2046    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2047    --- Pressure/geopotential gradient:
2048    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2049    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2050      ( changes results of global_ocean_pressure )
2051    o NLFS + z-coord.: add eta*Rho' contribution.
2052    o accurate phiHyd when using interface-W at the middle between 2 centers
2053     ( changes results of ideal_2D_oce )
2054    o includes r* 2nd term in potential gradient.
2055    
2056    checkpoint48f_post
2057    Merging from release1_p12:
2058    o Modifications for using pkg/exf with pkg/seaice
2059      - improved description of the various forcing configurations
2060      - added basic radiation bulk formulae to pkg/exf
2061      - units/sign fix for evap computation in exf_getffields.F
2062      - updated verification/global_with_exf/results/output.txt
2063    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2064      (SBO) core products, including oceanic mass, center-of-mass,
2065      angular, and bottom pressure (see pkg/sbo/README.sbo).
2066    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2067      to avoid negative values in shallow regions.
2068      - updated verification/natl_box/results/output.txt
2069      - updated verification/lab_sea/results/output.txt
2070    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2071    o Added useSingleCpuIO option (see PARAMS.h).
2072    o Updated useSingleCpuIO option in mdsio_writefield.F to
2073      work with multi-field files, e.g., for single-file pickup.
2074    o pkg/seaice:
2075      - bug fix in growth.F: QNET for no shortwave case
2076      - added HeffFile for specifying initial sea-ice thickness
2077      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2078    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2079      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2080    o pkg/seaice:
2081      - adjoint-friendly modifications
2082      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2083    
2084    checkpoint48e_post
2085    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2086    o dynamics: change definition of computational domain & adapt mom_fluxform
2087      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2088    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2089        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2090        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2091        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2092        inverted_barometer solid-body.cs-32x32x1
2093      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2094    
2095    checkpoint48d_post
2096    o in preparation for r*:
2097     a) use pre-computed gradient of hydrostatic potential:
2098        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2099     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2100        => affects results of glob_oce_pressure (different truncation error)  
2101      update output.txt of ideal_2D_oce & global_ocean_pressure
2102    
2103    checkpoint48d_pre
2104    o in preparation for r*:
2105      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2106      pass the 2 comp. of the grad. as arguments to momentum S/R.
2107      but for the moment, only used if it does not change the results.
2108    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2109    
2110    checkpoint48c_post
2111    Modifications in treatment of initial flux forcing controls
2112    to avoid extra storing of flux fields.
2113    
2114    checkpoint48c_pre
2115    o Added tidal_basin_2d experiment (currently 1D!)
2116    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2117    
2118    checkpoint48b_post
2119    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2120     (modification to pressure gradient not yet implemented)
2121    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2122      (for U & V) that are used for vertical advection of momentum.
2123    
2124    checkpoint48a_post
2125    o In preparation for r*, use temp. array to compute vertical transport
2126       in flux-form momentum pkg. => change results of few test-exp.
2127      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2128                        lab_sea, natl_box & plume_on_slope
2129    
2130    checkpoint48
2131    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2132    
2133    checkpoint47j_post
2134    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2135    o moved adexch from forward_step to addummy_in_stepping
2136    o added exch in ctrl_map_...
2137    o aveFreq.=0. at end of cost_final to avoid overwrite in
2138      reverse checkpointing loop
2139    o Yet more changes in gmredi:
2140      * adgmredi_calc_tensor
2141        avoiding all recomputation of gmredi_slope_limit
2142      * adgmredi_x/y/rtransport
2143        added flag for excessive storing to avoid recomp. of
2144        u/v/rtans, dTdx/y/z
2145        -> this is not really necessary and very memory-consuming
2146      * adgmredi_slope_psi:
2147        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2148      * gmredi_slope_limit
2149        re-activated full calculation of taperfct for case 'ac02'
2150    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2151    
2152    checkpoint47i_post
2153    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2154    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2155      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2156    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2157    o gmredi: fix few bugs.
2158    
2159    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2160    This will be a good checkpoint to plug into the ecco-branch.
2161    o few modif.'s to get latest version adjointed
2162      (mainly kick out code in ini_linear_phisurf)
2163    o modif's to run adjoint with exactConserv
2164    o case GM_BOLUS_ADVEC should be cleaned
2165      S/R gmredi_slope_psi should be cleaned
2166    o verification/carbon now has exactConserv=.TRUE.
2167    
2168    checkpoint47g_post
2169    o time-average AIM output: becomes independent from statvars time-average
2170      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2171    o After TAF bug fix:
2172      Tested adjoint of gmredi package.
2173      Tests were done with checkpoint47 rather than with latest
2174      checkpoint47f_post since the latter is broken for the adjoint
2175      verification/carbon/ contains both ADM and TLM gradient checks.
2176    Here they are, before they get changed/lost/stolen.
2177    Mostly modif.'s to fix numerical sensitivities.
2178    Gradient checks OK for
2179    - GM_taper_scheme:
2180      * clipping
2181      * ac02
2182      * linear
2183      * glw91
2184      * dm95
2185      * ldd97
2186    - GMREDI_OPTIONS:
2187      * GM_VISBECK_VARIABLE_K
2188      * GM_NON_UNITY_DIAGONAL
2189      * GM_EXTRA_DIAGONAL
2190      * GM_BOLUS_ADVEC
2191    in conjunction with data.gmredi parameters to be checked in
2192    in a few minutes under verification/carbon/code/
2193    
2194    checkpoint47f_post
2195    Merging from release1_p10:
2196    o modifications for using pkg/exf with pkg/seaice
2197      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2198        and SEAICE_EXTERNAL_FLUXES
2199      - pkg/exf CPP options EXF_READ_EVAP and
2200        EXF_NO_BULK_COMPUTATIONS
2201      - usage examples are Experiments 8 and 9 in
2202        verification/lab_sea/README
2203      - verification/lab_sea default experiment now uses
2204        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2205    
2206    checkpoint47e_post
2207    o created a tag prior to creating a branch
2208    
2209    checkpoint47d_post
2210    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2211      at the bottom boundary had an erroneous half slip boundary condition
2212    o added bottom drag and no slip boundary condition capabilities to
2213      oceanic pressure coordinates code
2214    o added new verification experiment global_ocean_pressure, this experiment is
2215      also described in the tutorial section of the manual
2216    checkpoint47d_pre
2217    
2218    checkpoint47c_post
2219    o Added a verification experiment for a global cubed-sphere ocean run
2220      -  verification/global_ocean.cubed32x32x30
2221      -  uses pkg/therm_seaice and pkg/bulk_forcing
2222    
2223    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2224    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2225      when using P-coordinate; only implemented for atmospheric config.
2226    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2227      NOTES: requires option NONLIN_FRSURF to be "#define".
2228    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2229    
2230    checkpoint47b_post
2231    Merging from release1_p9:
2232    o pkg/seaice
2233      - removed GOTO's and added taf directives
2234      - double precision constants to reduce the g77 (Linux)
2235        to F77 (SGI) differences reported in release1_p8
2236    o tools/genmake
2237      - added SGI options
2238    o verification/testscript
2239      - updated to that of checkpoint47a_post
2240    o verification/global_ocean.90x40x15/input/eedata
2241      - modified for SGI f77 compatibility
2242    o verification/lab_sea
2243      - added description of sea-ice model
2244      - added missing matlab routines
2245      - added test of thermodynamics parallelization
2246    
2247    checkpoint47a_post
2248    o new pkg: aim_v23
2249     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2250       for now, keep the same surface forcing as before.
2251     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2252     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2253     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2254    o add diagnostic of surface correction term in monitor output
2255    
2256    o bulk_force and therm_seaice
2257    - Two packages:  bulk_force (Bulk forcing)
2258      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2259    - Earlier integration from Stephaine Dutkiewicz
2260      and Patrick Heimbach.
2261    - Two ifdef statements for compile time,
2262       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2263    
2264    checkpoint47
2265    differentiable version of checkpoint46n_post
2266    o bug fix in quasihydrostaticterms
2267    o * "clean" adjoint code (in terms of extensive recomputations)
2268        can now be obtained for all GMREDI options (i.e. for
2269        - GM_VISBECK_VARIABLE_K
2270        - GM_NON_UNITY_DIAGONAL
2271        - GM_EXTRA_DIAGONAL
2272        - GM_BOLUS_ADVEC )
2273      * However, wrong gradient check problem remains unsolved.
2274      * New CPP options have been introduced for different
2275        tapering schemes
2276    o external_fields_load now part of differentiation list
2277    o pressure needs multiple storing;
2278      would be nice to have store_pressure at beginning or
2279      end of forward_step, e.g. by having phiHyd global (5-dim.)
2280      (NB: pressure is needed for certain cases in find_rho,
2281      which is also invoked through convective_adjustment).
2282    o recomputations in find_rho for cases
2283     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2284    o #define ATMOSPHERIC_LOADING should be differentiable
2285    o ini_forcing shifted to begining of initialise_varia
2286    o Incorporating QNVS line search routines into MITgcm
2287      (this is separate code, and therefore not under pkg)
2288      lsopt/, optim/
2289    o Updated verification/carbon/
2290      - #define GM_VISBECK_VARIABLE_K
2291      - GM_taper_scheme    = 'ldd97'    
2292    
2293    checkpoint46n_post
2294    Merging from release1_p8:
2295    o verification/natl_box:
2296      updating new external_fields_load routine
2297    o New package: pkg/seaice
2298      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2299      The sea-ice code is based on Hibler (1979-1980).
2300      Two sea-ice dynamic solvers, ADI and LSR, are included.
2301      In addition to computing prognostic sea-ice variables and diagnosing
2302      the forcing/external data fields that drive the ocean model,
2303      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2304      The implied surface heat flux is then stored in variable
2305      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2306      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2307      non-local transport term.  Because this call precedes model
2308      thermodynamics, temperature under sea-ice may not be "exactly" at
2309      the freezing point by the time theta is dumped or time-averaged.
2310      N.B.: fairly large differences in accuracy occur across
2311            different platforms/compilers; comparison between
2312            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2313            generated output gives:
2314       T           S           U           V
2315      C D M    c        m  s        m  s        m  s        m  s
2316      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2317      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2318      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2319    
2320      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2321    o GAD:
2322      - generated new common blocks to account for call of
2323        same gad routines with differing traceridentities
2324        (needed to modify tracerIdentity indices in GAD.h)
2325      - generated separate common blocks for case useCubedSphereExchange
2326        (Department of Futurology)
2327      - parameter lists to gmredi_?transport: added tracerIdentity
2328      - added new key indices to tamc.h
2329    o external_fields_load:
2330      - added this routine to TAF list
2331      - needed to make some common blocks global and additional storing
2332        along the same lines as exf package (checkpoint_lev?_directives.h)
2333    o exf:
2334      updated external forcing package
2335      - bug fixes carried over from ecco-branch
2336        (missing OBCS_OPTIONS.h in two routines)
2337      - enable easy to use "no forcing".
2338      - added exf I/O for atmospheric loading
2339      - added exf I/O for runoff data
2340      - transfered scaling between exf <-> MITgcm to exf namelist
2341    o Adding new verification experiment global_with_exf.
2342      This verification experiment is almost identical to the
2343      global_ocean.90x40x15 experiment, except that it uses
2344      the exf (and cal) package instead of the
2345      external_fields_load routine (cf README file).
2346    
2347    checkpoint46m_post
2348    o modified testscript to return -- when there are no lines of "%MON" output
2349    o added new flag "quasiHydrostatic" for QH mode
2350      and new routine quasihydrostaticterms()
2351    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2352      New routine: mom_u_coriolis_nh()
2353    o fixed sign of non-hydrostatic metric terms in u and v equations.
2354      Depend on correct sign of gravitySign.
2355    o added work.pc* to .cvsignore in aim directories using ifc
2356    o introduced flag for controllin non-hydrostatic metric terms
2357    o removed gravitySign from PARM04
2358    o switched to g77/ifc from pgf77 in aim experiments
2359    
2360    checkpoint46l_post
2361    o made convective adjustment work with pressure coordinates:
2362     - changed the direction of k-loop in convective_adjustment.F for the
2363       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
2364     - adjusted the reference pressure k-index in convective_adjustment.F
2365     - adjusted the convection condition in convect.F (in analogy to
2366       calc_ivdc.F)
2367     - convective_adjustment no longer computes anything on the halos
2368     - removed the warnings about negative salinity from find_rho.F and
2369       find_alpha.F; instead the new routine look_for_neg_salinity, called
2370       at the beginning of find_rho, find_alpha, and find_beta, does a
2371       check of the entire slice, if CPP-option
2372       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
2373    checkpoint46l_pre
2374    
2375    checkpoint46k_post
2376    o fixed the verification/global_ocean.90x40x15 experiment:
2377     - new bathymetry (the world according to A., JMC, and M.)
2378     - new initial fields and forcing fields (*.bin files)
2379     - new POLY3.COEFFS (for the next release one should switch to a full
2380       equation of state: JMD95P or MDJWF)
2381     - fixed several errors and redundancies in the data file
2382     - experiment uses looped cells
2383     - added matlab directory with diagnostic scripts for plotting of output
2384    
2385    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
2386     - read AIM physics parameters from a file (data.aimphys)
2387     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
2388    
2389    checkpoint46j_post
2390    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
2391    o move wVel computation at the end of the time step, in S/R integr_continuity
2392    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
2393    o update timeave pkg for wVel diagnostic.
2394    checkpoint46j_pre
2395    
2396    checkpoint46i_post
2397    o Clean up AIM package (and keep the results unchanged):
2398      include CPP_OPTION and use IMPLICT NONE in all routines ;
2399      declare all the variables _RL ; use _d 0 for all numerical constants.
2400      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
2401    
2402    checkpoint46h_post
2403    o cleaned up the use of rhoNil and rhoConst.
2404      - rhoNil should only appear in the LINEAR equation of state, everywhere
2405        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
2406        and the dynamical equations are all divided by rhoConst
2407    o introduced new parameter rhoConstFresh, a reference density of fresh
2408      water, to remove the fresh water flux's dependence on rhoNil. The default
2409      value is 999.8 kg/m^3
2410    o cleanup up external_forcing.F and external_forcing_surf.F
2411      - can now be used by both OCEANIC and OCEANICP
2412    checkpoint46h_pre
2413    
2414     Added code to convert surface volume flux (fresh water) into
2415     a mass flux when using P coordinates in the ocean (OCEANICP).
2416     Note: It assumes you have set rho0=rhoConst=density of fresh water.
2417    
2418    checkpoint46g_post
2419    o Include a new diagnostic variable phiHydLow for the ocean model
2420      - in z-coordinates, it is the bottom pressure anomaly
2421      - in p-coordinates, it is the sea surface elevation
2422      - in both cases, these variable have global drift, reflecting the mass
2423        drift in z-coordinates and the volume drift in p-coordinates
2424      - included time averaging for phiHydLow, be aware of the drift!
2425    o depth-dependent computation of Bo_surf for pressure coordinates
2426      in the ocean (buoyancyRelation='OCEANICP')
2427      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
2428        Theta, Salinity, and Pressure in the parameter list. This routine is
2429        presently contained in find_rho.F. This routine does not give the
2430        correct density for 'POLY3', which would be a z-dependent reference
2431        density.
2432    o cleaned up find_rho
2433      - removed obsolete 'eqn' from the parameter list.
2434    o added two new verification experiments: gop and goz
2435      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
2436    checkpoint46g_pre
2437    
2438    checkpoint46f_post
2439    o Enable tangent linear (forward mode) gradient checks:
2440      - extended active file handling to g_... files
2441      - added TANGENT_SIMULATION to theSimulationMode
2442      - extended grdchk package accordingly
2443    o added tangent linear setup in verification/carbon/code_ftl
2444    o added adjoint setup in verification/front_relax/code_ad
2445    
2446    checkpoint46e_post
2447    o Added new equation of state -> MDJWF
2448      - EOS of McDougall et al., 2002, JAOT, submitted
2449      - caveat: the equation of state is only valid for a smaller (more
2450        realistic?) range of values than JMD95P/Z and UNESCO
2451      - added masks to the calculation of pressure in store_pressure
2452      - added more check values for density in check_eos (ini_eos.F), some of
2453        the old check values are out of the range of the MDJWF-eos, so don't
2454        expect perfect matches for those
2455    checkpoint46e_pre
2456    
2457    checkpoint46d_post
2458    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
2459      'OCEANICP', also initialised field pressure correctly in ini_eos in the
2460      case of pressure coordinates. eosType='JMD95Z' in
2461      combination with buoyancyRelation='OCEANICP' now causes an error.
2462    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2463      in find_alpha/beta.
2464    checkpoint46d_pre
2465    
2466    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2467      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
2468    
2469    checkpoint46c_post
2470    o Changes necessary for ocean in p-coordinates
2471     -  Added new buoyancy relation = 'OCEANICP'
2472     -  Added new parameters = gravitySign (this used to be contained inside
2473        the factor dRdZ which I added when we first switched to R coordinates).
2474     X GM/Redi is not compatible (yet)
2475     X bottom drag and no-slip need to be debugged.
2476    checkpoint46c_pre
2477    
2478    checkpoint46b_post
2479    o Added new equation of state -> JMD95Z and JMD95P
2480      - EOS of Jackett and McDougall, 1995, JAOT
2481      - moved all EOS parameters into EOS.h
2482      - new routines ini_eos.F, store_pressure.F
2483    o Added UNESCO EOS, but not recommended because it requires
2484      in-situ temperature (see JMD95)
2485    o Modified formatting for knudsen2.f in utils/knudsen2 and added
2486      unesco.f to be used with POLY3
2487    checkpoint46b_pre
2488    
2489    checkpoint46a_post
2490    o Added (atmospheric) pressure loading
2491      - new field in FFIELDS.h, etc...
2492      - new cpp flag ATMOSPHERIC_LOADING
2493    o Changed hFacC to _hFacC in calc_phi_hyd.F
2494    o Added SHORTWAVE_HEATING to some files for consistency
2495    checkpoint46a_pre
2496    
2497    checkpoint46
2498    further merges from release1_p5
2499    o new ctrl package
2500      - adopted from ECCO environment to enable optimization
2501      - added Eliassen Palm fluxes to controls
2502    o added Eliassen Palm flux controls to gradient check package
2503    o cost package
2504      - Compatible with new ctrl package
2505      - added Eliassen Palm cost hooks
2506      - modif's of existing cost functions
2507    o Adjoint-related bug fixes in kpp:
2508      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
2509      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
2510    o autodiff package
2511      - flow directives:
2512        + new for S/R do_the_model_io
2513        + enhanced for S/R checkpoint
2514        + new gmredi.flow
2515      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
2516        disable adcommon.h/g_common.h by default.
2517      - fixed problem for adjoint of global_max
2518    o modified verification/carbon/
2519    o New setup for adjoint of global_ocean
2520    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
2521    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
2522    o incorporated hooks for sponge layer code (external_forcing.F)
2523    
2524    checkpoint45d_post
2525    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
2526  o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S  o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
2527    (affects plume_on_slope "cg2d" output)    (affects plume_on_slope "cg2d" output)
2528    o add new parameter deltaTfreesurf for free-surface time stepping
2529    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
2530  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
2531  o change phiMin in exp1 (to agree with documentation)  o change phiMin in exp1 (to agree with documentation)
2532  o add new flags:  o add new flags:

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