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revision 1.106 by jmc, Sat Nov 23 22:39:36 2002 UTC revision 1.679 by heimbach, Thu Jun 15 17:03:16 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 new routine load_fields_driver
8      handles all forcing/source term calls
9    o seaice, thsice calls moved to do_oceanic_phys
10    o adjoint store dir. adjusted accordingly
11    
12    checkpoint58i_post
13    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
14      on wind stress (SEAICEstressFactor defaults to 1.)
15    o Total number of Timers is finite (<=40): comment out 2 non-essential one
16      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
17    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
18      on CS-grid: no longer loosing mass.
19    o exf & curvilinear-grid: no longer modify longitude xC & xG.
20    o pkg/ggl90: fix sloppy output and fix a bug
21    o pkg/seaice: added SEAICEuseEVPpickup parameter
22      - Set to false in order to start EVP solver with
23        non-EVP pickup files when using SEAICEuseEVP
24      - fix sign error in diffusion in seaice_calc_rhs
25    
26    checkpoint58h_post
27    * Modifications for bottom topography control
28      o replace hFacC by _hFacC at various places
29      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
30      o add non-self-adjoint cg2d_nsa
31      o update autodiff support routines
32      o re-initialise hfac after ctrl_depth_ini
33      o works for 5x5 box, doesnt work for global_ocean.90x40x15
34    * Adding verification for 5x5 box (4-layer) bottom topography control
35    
36    checkpoint58g_post
37    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
38       used for mean seasonal cycle, mean diurnal cycle); add an example
39       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
40    o pkg/ggl90:
41      - add parameter (minimum surface kinetic energy)
42      - fix bug (avoiding division by zero)
43    o couple pkg/thsice to pkg/seaice:
44      - modify advection in seaice to accomodate new scalar fields to be advected
45      - only muliDimAdection scheme work with seaice/thsice
46      - mapping of thsice-variables to seaice-variables, back and forth
47      - does not break the verification experiments, but does not give the
48        desired results either
49    o pkg/seaice
50      - make (default) second order advection a bit less confusing?
51    
52    checkpoint58f_post
53    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
54      to pkg/seaice):
55      - new routines thsice_map_exf and thsice_get_exf provide the interface
56      - add an additional formal parameter to thsice_solve4temp
57    o pkg/exf:
58      - add new fields wspeed, snowprecip (to be able to couple to thsice)
59      - correct Stefan-Boltzmann constant
60      - new parameter for longwave surface emittance
61      - separate some stuff from exf_bulkformulae into new routines  
62        exf_radiation, exf_wind
63      - add new parameters and constants: longwave emissivity for ocean, ice
64        and snow, evaporation parameters over ice
65      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
66        either wind from stress or stress from wind
67    o pkg/thSIce:
68    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
69    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
70       and THSICE_CALC_THICKN
71    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
72    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
73      to make debugging easier.
74    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
75    o pkg/bulk_force:
76      - clean-up comments and parameters ;
77      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
78    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
79      generate new output for test-experiment: aim.5l_cs.thSI
80    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
81      testreport accordingly
82    
83    checkpoint58e_post
84    o SEAICE_CGRID adjoint done
85    o R_STAR adjoint implemented.
86      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
87      * need to sort out init. of h0facc, etc.
88    o Make pkg/profile fully independent of ecco,cost, etc. stuff
89      to be able to use it in pure forward.
90    
91    checkpoint58d_post
92    o upgrade simple test-experiment to tutorial example:
93     step.1: duplicate the experiment and (step.2) will remove the old copy.
94      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
95      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
96      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
97      tutorial_global_oce_biogeo    <- copy of dic_example
98      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
99      tutorial_plume_on_slope       <- copy of plume_on_slope
100      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
101      tutorial_global_oce_optim     <- empty for now (David ?)
102      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
103     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
104    o correct a sign problem in cost_scat.F
105    o obcs and ptracers: fix boundary conditions for advections schemes
106      with larger stencil
107    o thsice adjoint: start
108    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
109      completeness
110    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
111      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
112    o ptracers adjoint:
113      * avoid extensive recomputatations
114      * fix missing re-init. of gptr (missed by TAF)
115    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
116      me to turn off the excessive output to STDOUT that this package produces
117    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
118      and add those terms in Vector-Invariant formulation.
119    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
120      if the control period (xx_hfluxperiod etc) is 0
121    o in profiles pkg, clean routines and fix details
122    o in ecco pkg, reading ssh data:
123      fix problem in case the model does not start at iter0=0
124    o fix mnc-pickup/restart for ptracers
125    o new package prifiles:
126      code to compute profile-based cost by Gael Forget
127      (modifs in ecco, ctrl, autodiff)
128    o Benign bug fix in initialization (spotted by M. Mazloff) of
129      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
130    
131    checkpoint58c_post
132    o adjoint: finish NLFS adjoint and provide reference output in
133      verification/global_ocean.90x40x15/results_ad_nlfs
134    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
135      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
136      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
137      with SEAICE_CGRID defined.
138    o move calendarDumps from "data" to "data.cal" and clean-up the code
139      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
140    o add useEXF & useCAL flags (for now, set in hard-coded way)
141    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
142      (were missing in NH mode, and wrong in quasihydrostatic mode).
143      waiting for Chris updated version of calc_gw to add those CALLs.
144    o fix bug in quasihydrostatic S/R ;
145      add a test for this option: global_ocean.90x40x15.qshyd
146    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
147      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
148    o add on/off flag useOffLine for package OFFLINE
149    o seaice:
150      - modify advection so that it works also on the C-grid
151      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
152        problem in multi-tile runs with C-grid
153      - add flags for clipping ice velocities and/or masking solver forcing
154      - fix drag (ocean on ice) formulation and a bug that caused noise in the
155        C-grid solver
156      - added a few comments to seaice_diffusion.F
157      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
158        are now exclusive)
159      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
160        required re-ordering the code a little:
161       + make DAIRN global variable (defined in SEAICE)
162       + move computation of the viscosities eta and zeta into a new separate
163         routine (because I need to recompute them in seaice_ocean_stress.F)
164    
165    checkpoint58b_post
166    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
167      update output.txt of exp. aim.5l_cs.thSI
168    o various mnc cleanups and improvements:
169      + shrink lookup tables by factor of ~4
170      + better error reporting when running out of lookup space
171      + able to handle longer path/file names (up to 500 chars)
172    o adjoint:
173      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
174      - TBD: "hidden" mom_vecinv recomp. in dynamics
175    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
176     (allow to differentiate between forcing components using new integer flags:
177      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
178     and add new flag to put Dissipation tendency out of Adams-Bashforth.
179    o ecco
180      - enable trend removal from SSH anomaly obs.
181    o adjoint
182      - a fix for PmEpR when #undef EXACT_CONSERV
183      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
184      - try to fix "hidden" recomp. in forward_step for NLFS
185        (NLFS seems broken sometimes after I checked it in)
186    o seaice:
187     - add c-grid version of the dynamic solver:
188       + three new routines that are the c-grid substitute lsr, dynsolver
189         and ostres
190       + put a few fields that were local to dynsolver into global common
191         blocks, so that I can move the computation of stresses etc into
192         seaice_lsr (saves coding but may break the adjoint).
193     - replace more hardwired parameters by runtime parameters
194     - add ice masks that mask the rhs of the implicit solvers where there
195       is no ice (commented out in seaice_dynsolver, because i am not sure
196       if this works properly), eventually this should replace the clipping
197       of ice velocities in seaice_dynsolver to +/-40cm/s.
198    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
199      include it only where its needed
200    o move balancing of fluxes before the call of external_forcing_surf
201    o seaice:
202      - correct units of turning angles (now they are really in degrees)
203      - move computation of GWATX/Y out of main routine into dynsolver
204      - initialize GWATX/Y in seaice_init
205    o Apply mask on Fresh-Water flux (needed for SSH forcing).
206      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
207    o seaice: add runtime flags for turning angles (default to zero)
208    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
209      and trend from exf forcing and ctrl control adjustments
210    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
211      (since checkpoint57x_post)
212    o change the default rotation period to 86164.s = the Earth rotation
213    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
214      and based on a reference stratification. Tested within hs94.cs-32x32x5.
215    o seaice advection: add code for choosing between the default (2nd order
216      central differences) and multiDim advection schemes provided by
217      pkg/generic_advdiff
218    o seaice:
219      - removed all references to SEAICE_GRID.h fields from
220        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
221        (cubed-sphere configuration will change a little)
222      - grid computations in seaice_init are obsolete now.
223      - cleaned up code a little so that is easier to read (hopefully).
224      - added new (better?) discretizations of default advection and diffusion
225        (turn on with SEAICEuseFluxForm)
226      - replace 1 in 3d global fields by kSurface in growth.F
227      
228    checkpoint58a_post
229    o seaice:
230      - bug fix in advect.F
231    o shelfice:
232      - separate shelfice load anomaly from pload (breaks with time
233        dependent forcing), => introduce constant field shelficeLoadAnomaly.
234        Its default is 0., but it may be computed more cleverly from (unknown)
235        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
236        done offline. A good approximation of the pressure load anomaly is
237        necessary to avoid large initial adjustment processes underneath
238        deep-reaching shelfice.
239      - small fix in ISOMIP shelfice_thermodynamics
240      - add more sophisticated thermodynamics of Hellmer (1989), this is
241        now the default
242      - give a few constants more intuitive names
243    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
244      if bulk formulae are used in long integration (especially EmPmR). Turn
245      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
246      if balancePrintMean, the imbalance that is substracted is printed to
247      STDOUT.
248    o fix bug (typo) in obcs_apply_eta.F
249    o add a new package shelfice which enables us to model the circulation
250      underneath shelf-ice with draughts of hundreds of meters.
251     - works
252     - to do: + include improved thermodynamics
253              + check whether kSurfC (from model/inc/SURFACE.h) can be used
254                instead of new field kTopC
255              + can we use topoFile, Ro_surf and existing code in ini_depth.F
256                instead of new field R_shelfIce and new code in ini_depth.F
257                and ini_mask_etc.F?
258              + adjust vertical mixing schemes?
259    o seaice pkg:
260     - add a cpp-flag to include a simple formula for a salinity dependent
261       freezing point of sea water at the surface
262     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
263       meridional stresses are now different (and hopefully correct)
264    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
265       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
266       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
267    o pkg/diagnostics: add options and parameters for regional-statistics
268       diagnostics ; define regions by reading a region-mask from a file
269       (might add other options later)
270    o pkg/bulk_force:
271     - add option and parameters to use AIM surface-flux formulae.
272     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
273       others forcing fields (defined in PARM05, parameter file "data") are loaded
274       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
275     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
276     - use the right EXCH call for uwind,vwind (to work on CS-grid).
277     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
278       and parameters (note: calcWindStress replaces .NOT.readwindstress).
279     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
280    
281    checkpoint58
282    o add "--embed-source" option to genmake2 which, when the supporting
283      tools can be compiled (as determined by genmake2) will turn on the
284      embed_files package which then embeds the entire MITgcm source code
285      (*.[fFhc] + Makefile) used for the build within the executable
286      - requested by CNH but off by default
287      - adds a paltry <9MB to the mitgcmuv executable in most cases
288      - only writes the output when useEMBEDSRC in eedata is true
289    o clean up 3-dim. relaxation codes:
290      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
291      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
292      * Thanks to Tom Haine for testing!
293    
294    checkpoint57z_post
295    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
296      affects output (@ truncation level) of exp. plume_on_slope ; updated.
297    o fix the pickup behavior for obcs in combination with ptracers
298    o fix a bug in ptracers_external_fields_load
299    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
300      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
301    o transfered surface NH pressure to eta field (if exactConserv).
302    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
303         and update lab_sea output.txt file.
304    o completing 3-dim. relaxation code: additional term
305         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
306      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
307      * At compile time, in "EXF_OPTIONS.h" set
308          #define  ALLOW_CLIMTEMP_RELAXATION
309          #define  ALLOW_CLIMSALT_RELAXATION
310      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
311          tauThetaClimRelax3Dim = 15552000.0,
312          tauSaltClimRelax3Dim  = 15552000.0,
313      * 3 cases:
314          1) Use a constant-in-time 3-dim. field
315          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
316          3) Real-time relax. to time-evolving prescribed field
317    o Adding Laplacian-type smoothness constraint on
318      initial and boundary (forcing) controls (ic, bc)
319      * enable at compile-time via
320        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
321      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
322      * Absolute scale somewhat unclear so far
323      * no area weighting was included since no other cost term does so far
324    
325    checkpoint57y_post
326    First step for a NLFS adjoint
327    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
328    o new init. routines for calc_r_star, calc_surf_dr
329    o still need to deal with ini_masks_etc
330    o testreport seemed happy
331    checkpoint57y_pre
332    
333    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
334    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
335    o add new offset feature to offline pkg (plus minor cleanup)
336    o cfc fixes for final year of integration
337    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
338      be in GCHEM_OPTIONS).
339    
340    checkpoint57x_post
341    o fix testreport Pb in multiple test experiment.
342    o cleanup our namelist syntax in verification:
343      - make it more F95 standards compliant (some work still needed)
344      - allows the vast majority of our tests to work with gfortran
345    o Non-Hydrostatic:
346     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
347     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
348    o Allow to apply AB on T,S rather than on AB(gT,gS):
349     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
350     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
351       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
352     - need a "clever" read_pickup to restart from the other AB formulation
353    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
354    o remove some unused variables (reduces number of compiler warnings)
355    o adjoint
356      * Disable useVariableViscosity for adjoint for time being
357        (there are a number of extensive recomputations)
358      * Initialize certain variables needed for adjoint
359    
360    checkpoint57w_post
361    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
362                 fix the singleCpuIO RS version of MDSWRITEFIELD
363       and add a WARNING if using globalFiles=T with multi-processors.
364    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
365      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
366    o tracer advection scheme:
367      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
368       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
369       was not very convenient).
370      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
371       (further tests needed for the implicit DST & Flux-Limiter schemes).
372    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
373      and sRef for convenience, handy, when you want to initialize
374      ptracers in a large domain with a constant non-zero value. Also,
375      untangle ptracers_init.F a little.
376    
377    checkpoint57v_post
378    o change dome exp. to use variable viscosity in side-drag terms.
379    o remove all the files from the cfc_offline test since they are now
380      incorporated into tutorial_cfc_offline which has been producing
381      identical results for a few days of testing
382    o add new parameter: sideDragFactor to enable half-slip-side BC
383      and change side-drag S/R to use viscosity from mom_calc_visc
384      (can switch back by setting sideDragFactor=0.); affects results at
385      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
386       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
387    o vorticity & strain are now computed without masking, to account for
388      no-slip-side BC in variable viscosity calculation ; mask is applied
389      anyway later on, before computing advection/coriolis terms.
390    o modify exp4 to test new obcs support for reading from external files
391      and for passive tracers
392    o fix behavior of ptracers_monitor when monitor output is written to a
393      netcdf-file; still not independent of monitor.F (writes in the same
394      file).
395    o change default value of tRef (put a uniform, meaningful value for ocean
396      & atmos) and initialize sRef (was missing, as Martin mentioned).
397    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
398      to be proportional to enstrophy dissipation length.  Thus,
399       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
400      This is now consistent with Smagorinsky and with the manual.
401    
402    checkpoint57u_post
403    o OBCS and PTRACERS: add open boundary support for passive tracers
404      - either use homogenous (pseudo) v.Neumann conditions or prescribe
405        OB-values from file; this is not different from the way theta and salinity
406        are treated
407      - however, Orlanski-radiation conditions are not supported, and the model
408        will stop if you use pTracers and Orlanski at the same time.
409      - beefed up the rountine obcs_external_fields_load: now only those open
410        boundary values are overwritten with values from files for which there
411        are really files, otherwise the OB-fields remain untouched. This makes
412        it possible to use different OBs at different ends of the domain (as
413        with EXF)
414    o reduce number of exch calls in shap_filt (s2).
415    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
416      truncation level) 4/5 MLAdjust test results (11&12 digits match).
417    
418    checkpoint57t_post
419    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
420    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
421      same truncation, independent of the face number: affects affects several
422      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
423    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
424      note that biharmonic viscosity + no-slip was not tested in any experiment.
425    o fix bug in non-linear free-surf side-drag ; generate new output for
426      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
427    o make mnc honor the writeBinaryPrec flag for most kinds of output
428    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
429    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
430      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
431    o add brackets in multi-terms sum to get same truncation, independent of
432      the face number (manage to get exactly same value of gU,gV at the cs-edge)
433      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
434    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
435      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
436      a maximum grid-scale Reynolds number.  Also, changes all length calculations
437      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
438      Suggested values of viscosity parameters found in mom_calc_visc.
439      Many new viscosity diagnostics available.
440    
441    checkpoint57s_post
442    o Add clearing-house for viscosity calculations, mom_calc_visc and
443      correct numerous bugs in LeithD and Smagorinsky discretizations.  
444      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
445      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
446      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
447      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
448      The Strain-Tension form is now called with useStrainTensonVisc=.true.
449      ViscAhStrain and viscAhTension are now retired.
450    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
451    o In response to JMC's bug report, genmake2 now ignores any soft-links
452      that it finds in the *current* directory when searching for files.
453      Soft-links found in any other source directories will still work as
454      they did before.
455    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
456      a C routine to unlimit the stack size
457    o mnc-ify pkg/aim snapshot vars
458    o mnc-ify pkg/land as requested by Daniel
459    o various changes to mnc including:
460      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
461      - output can now be grouped so that all files within a group
462          change the ITER portion of their names in lock-step together
463      - can now read ("global") PER-FACE (in addition to PER-TILE) files
464          and works with both EXCH1 and EXCH2 (but needs more testing)
465      - writing works for all verification test cases w/ g77 on Linux
466    
467    checkpoint57r_post
468    o make MNC variable initialization happen earlier
469    o add diagnostics for (almost) each term of the momentum Eq.
470    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
471    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
472    o remove MINIMAL_TAVE_OUTPUT option ;
473      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
474    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
475      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
476    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
477    o add time-dependent SST, SSS control
478    o cost terms in ecco/ modularized (new cost_generic.F)
479    o cost_averages routines are modularized (new cost_averagesgeneric.F)
480    o new infrastructure for seaice model vs. obs misfits in seaice/
481      * driver from the_main_loop.F is seaice_cost_driver.F
482      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
483      * gradient check in Exp. 6a of natl_box_adjoint/
484    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
485      (see README file)
486    
487    checkpoint57q_post
488    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
489    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
490      - bug was reported by Jean-Michel and Ian Fenty
491    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
492      update exp. cpl_aim+ocn output.
493    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
494      Needed for high-res. runs with large global files
495      to be able to limit tapelev size
496    o Changed some tests for adjoint:
497      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
498      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
499      * global_ocean.90x40x15/ back to default 3-level checkpointing
500    o Modifications to enable scripted COMMON to MODULE conversion
501      * verification/OpenAD/code/ has necessary scripts and description;
502      * converts, compiles and runs successfully;
503    
504    checkpoint57p_post
505    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
506    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
507      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
508    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
509    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
510      (was already the case for dissipation with mom_vecinv,
511       and also the case for grad.PhiHyd when staggered-timeStep)
512      This will allow to put dissipation out-off the AB time-stepping.
513     Unfortunately, affects truncation error. Update output of exp. that "fails"
514      (cg2d matching number) and leave the others for later: front_relax(10),
515      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
516      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
517    
518    checkpoint57o_post
519    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
520      (2) its ready to be documented during the 20050801 DocFest
521    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
522      for ideal_2D_oce and lab_sea on linux_ia32_g77
523    o set to #undef CTRL_SET_OLD_MAXCVARS_30
524      in global1x1_tot/code_seaice_adj to access indices 32, 33
525      (worth another tag)
526    
527    checkpoint57n_post
528    o adding precip control xx_precip 32
529    o adding swflux control xx_swflux 33
530    o Replacing 10 forcing penalty cost routines by 1 generic.
531    o Implementing partitioning in time-mean and variable adjustment
532      for atmos. state.
533    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
534    o in natl_box_adjoint:
535      * updated exp 1 to 10
536        (but does not have time-mean vs. variable split results yet)
537    o updated global1x1/*_seaice_adj/
538      to incorporate latest changes
539    o enable useSingleCpuIO for mdsio vector routines
540      (applies in particular to tapelev I/O)
541    o removed inefficient K-loop in all active_file*control*.F
542    
543    checkpoint57m_post
544    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
545      and advect_cs (use EXCH-2 and standard cs-32 grid files).
546    o pkg/exch2: filling of face-corner halo regions is optional
547      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
548    
549    checkpoint57l_post
550     tag before updating tutorials (pre-release-2)
551    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
552       for output and interpolation of input fields onto model grid)
553    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
554       Affects results of exp. rotating_tank ; update output.txt.
555    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
556          and taking the square quantity and/or using a fraction-weight field.
557    o fix aim_diagnostics_init.F mate numbers.
558    o add mnc output capability to diagnostics/diagstat and update
559      our cvsignore files for the ACSII output generated
560    
561    checkpoint57k_post
562    o lab_sea now uses diagnostics package and provides a suite of
563      new EXF diagnostics output.
564    
565    checkpoint57j_post
566    o exf
567      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
568        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
569        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
570      * extended diagnostics output
571        - now includes all EXF variables
572        - hs, hl moved to common block
573        - separate S/R for diagnostics, called after ctrl vector is added
574        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
575        - EXFqnet contains true Qnet (i.e. includes qsw)
576      * updated verif. lab_sea, global_with_exf
577      * Rearranging hflux (exf_mapfields -> exf_getforcing)
578        to ensure that diagnostics sees a true EXFqnet
579    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
580    o diagnostics pkg: change pointers so that 1 diagnostic can be used
581      several times with different frequencies.
582    o mnc-ify the thsice package as requested by Daniel Enderton
583      - the monitor--MNC output needs work
584      - many attributes need to be added (most are currently blank)
585    o mnc-ify theaim_v23 package as requested by Daniel Enderton
586      - many attributes need to be added (most are currently blank)
587    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
588    o add Sadourny like discretization to the 4th.O vorticity advection scheme
589    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
590      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
591         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
592    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
593     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
594    
595    checkpoint57i_post
596    o Diagnostics package was changed: diagnostic allocation is now deactivated
597      by setting an empty file name in the namelist (used to be by setting 0 frequency)
598    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
599      add 1rst Order upwind vertical Shear.
600    o add a quick fix for A/B checkpointing in OFFLINE mode
601    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
602      end-run around the C/Fortran linking horror in eesup/src/timers.F
603    o added pkg/runclock: allows user to terminate run based on wall clock
604    o added non-hydrostatic scaling parameter: nh_am2
605    o pkg/my82: futile attempt to make results compiler-independent by adding
606      some "_d 0", etc. no effect.
607    o for mnc output, fill the 'T' coordinate var with myTime and create a
608      separate 'iter' variable for iteration count
609    o pkg/diagnostics:
610      add new capability: output of Global/Regional & per-level statistics ;
611      tested against monitor output (including land & thSIce) on various exp.
612    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
613    
614    checkpoint57h_done
615      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
616      data.diagnostics, data.gchem, data.ptracers) is done.
617    
618    o pkg/diagnostics: prepare for Global/Regional statistics.
619      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
620    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
621      and rename it: DIFFERENT_MULTIPLE
622    
623    checkpoint57h_post
624    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
625    o pkg/diagnostics: change output frequency, now in seconds (instead
626      of Nb of iterations). This requires to change data.diagnostics.
627    checkpoint57h_pre
628    
629    o in mnc, let the user create the output dir if both mnc_outdir_date
630      and mnc_outdir_num are false
631    o add fflags() to pkg/diagnostics which allows one to specify, on a
632      per-file basis, the file precision [default behavior is unchanged]
633    o added diagnostics to pkg/kpp, including computation of mixed layer
634      depth based on a temperature/density criterion
635    o updated verification/natl_box to test the new pkg/kpp diagnostics
636    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
637    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
638    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
639      not mnc -- this mistake was found by JMC and is now corrected
640    
641    checkpoint57g_post
642    o add Adams-Bashforth 3rd Order time stepping:
643      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
644      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
645    checkpoint57g_pre
646    
647    o make lambda[Theta,Salt]ClimRelax spatially varying
648      (default remains spatially uniform constant based on tau)
649    o added new control variables
650      * init. uVel, vVel, etanN
651      * lambda[Theta,Salt]ClimRelax
652    o separate masks used for ctrl_pack/unpack 'from write_grid' output
653      (suggested by G. Forget)
654    
655    checkpoint57f_post
656    o add parameter "baseTime" = model base time = time at iteration zero
657      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
658      account for baseTime shift
659    o move Coriolis arrays from PARAMS.h to GRID.h
660    checkpoint57f_pre
661    
662    o mnc-ifying the seaice package
663    o introduced an alternative length scale calculation for use in the limiting
664      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
665    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
666    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
667      as well as grad(vort3).  Made it compatible with both approximate form
668      for the cubed sphere and full form of these gradients.  Added flag
669      useFullLeith to select between approximate and full form.  
670    o add "d0" in getcon.F to reduce differences between compilers/platforms
671      update output.txt of exp. fizhi-gridalt-hs
672    o change port_rand funtion to allow to set the seed.
673    o fix obscure MNC bug involving conversion between reals and integers
674      - it caused no problems with certain (eg. gcc, ifc) compilers but the
675        new version is now more standards-compliant
676    o adjoint-related modifications
677      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
678      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
679      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
680    
681    checkpoint57e_post
682    o Adding eddy stress controls a la Ferreira et al.
683    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
684    
685    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
686      update output.txt of exp. fizhi-gridalt-hs
687    o add more "Z" dimensions and associated coordinate vars to MNC
688    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
689    o parameter calendarDumps: when set, approximate months (30-31 days) and years
690      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
691      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
692      months and years.  Requires pkg/cal.
693    o diagnostics: add pickup functionality
694      - off by default for backwards compatibility
695      - current version only uses MDSIO -- MNC will be added
696    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
697    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
698    
699    checkpoint57d_post
700    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
701    o modify verification/ideal_2D_oce so that it tests the creation of mnc
702      output from the diagnostics package
703    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
704    o make genmake2 more portable by using ".$FS" instead of ".f" for more
705      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
706    o add coordinate variables to the MNC output from the diagnostics package
707    o change MNC-flags default value: true when useMNC=TRUE
708    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
709      the ability (off by default) to read the grid information using MNC
710    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
711    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
712    o do snap-shot diagnostics at the middle of the time-interval (instead of
713      at the end).
714    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
715      new test for AIM with thSIce + slab-ocean
716    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
717    o move state variable diagnostics to the beginning of the time step ;
718      (note: still needs some work specially for snap-shot diagnostics)
719      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
720    
721    checkpoint57c_post
722    o Change testing option (-ieee) to get closer agreement between g77 & ifort
723    o generate new output.txt files on faulks with g77 & the new -ieee option
724    checkpoint57c_pre
725    
726    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
727      update output.txt of exp. global_ocean.90x40x15
728    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
729      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
730    o add saltFlux(+File) forcing capability with periodicExternalForcing
731    o allow to use pkg diagnostics for GM-Redi & ThSIce output
732    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
733    o improvements for the MNC output from DIAGNOSTICS:
734      - correct handling of the unlimitied dimension
735      - all dims now have associated coordinate variables
736      - variables located at U, V, and Corner ("Z") points are now written
737        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
738        *all* data points are output
739    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
740    o added pkg/seaice/seaice_monitor.F
741    o mdsio_readfield.F can now read files visible only to master MPI process.
742    o pkg/seaice: some test code for ice-modified ocean stress
743    o exf_getffields interpolation defaults to bilinear for all scalar forcing
744      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
745      spurious negative numbers for precipitation and humidity.  Will cause
746      some small numerical differences for integrations using pkg/exf/exf_interp.F.
747    o pkg/ctrl/
748      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
749        May be enabled via doPackDiag
750      *  introduce z-scaling of
751         + gradient (doZscalePack) and
752         + control (doZscaleUnpack)
753    o pkg/mdsio/
754      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
755      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
756    
757    checkpoint57b_post
758    o simplify options in diagnostics_fill arguments (remove weird combinations)
759    o fix MNC coordinate variables so that they now contain per-face index
760      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
761      general, EXCH2 grids are only aligned to a "local" coordinate system
762    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
763    o Implement instantaneous output within pkg diagnostics:
764      setting a negative frequency in data.diagnostics produces
765     "snap-shot" output (as opposed to time-average if freq > 0)
766    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
767      NOTE: change ptracer diagnostics name: use 2 characters to work with
768            more than 9 tracers. Add also diagnostics of advect & diffus flux.
769    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
770      becomes the coordinate variable for the 'T' dimension
771    o add CF-style coordinate variables to MNC
772      - just a first cut:  numbers are meaningless on the cubesphere and
773        missing along the T axis but otherwise it works!
774    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
775    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
776    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
777      this is based directly on what the model compute, so that the content of
778      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
779    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
780    o clean up build options files for SunOS, in particular
781      - remove -traditional from xmakedepend
782      - change -xarch=v9 to -xarch=native for f77
783      - restore use of make (not gmake)
784      - add CC=gcc if using g77
785    o changes per discussion of AM, JMC, & EH3 today:
786      - move redundant "grid" variables out of "state" -- in preparation of
787        creating proper CF-style coordinate variables and in recognition
788        that any/all grid variables can be easily copied (eg. w/NCO) from
789        the grid files into any of the other NetCDF files
790      - *always* output grid variables with MDSIO (this will eventually be
791        changed)
792      - output MNC grid file if useMNC is true
793    o every instance of _END_MASTER() has been found and replaced with
794      _END_MASTER( myThid ) in order to satisfy certain picky Sun
795      preprocessors
796    o re-arrange diagnostics pkg initialisation:
797     - allow each package to extend the available diagnostics list
798     - add some checking and fix small problems (multi-threaded, ...)
799     - new S/R diagnostics_fill (replace fill_diagnostics):
800       look through the short list of active diag. (instead of the long list)
801       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
802    
803    checkpoint57a_post
804    o this set of changes restores TAMC compatibility
805      tested for global_ocean.90x40x15 adjoint on trough
806      (what a pain)
807    
808    checkpoint57a_pre
809    o some modifs in tools/build_options for sunos
810    o call ctrl_pack for ctrl at end for optimcycle=0
811    
812    checkpoint57
813    o add horizontal bi-harmonic viscosity for vertical velocity
814      - new parameter viscA4W (defaults to viscA4)
815      - affects only non-hydrostatic code
816      - to be done: no-slip lateral boundary conditions
817    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
818    o implement Implicit Vertical advection for pTracers
819    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
820      (implemented also for implicit vertical diffusion & advection)
821    o OBCS: extend application of tracer open boundary conditions
822      to a strip beyond the boundary of width Olx/Oly
823    o add call monitor to TAF set of required calls (flow directives)
824      and include in natl_box_adjoint
825    o untangle a few ifdefs related to cost, ctrl, autodiff
826      untangel a few ALLOW_ECCO_OPTIMIZATION
827    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
828      (theta2, salt2 in ecco_cost_weights)
829    
830    checkpoint56c_post
831    o OBCS as control variables
832      - update ctrl_ad_diff.list, obcs_ad_diff.list
833      - remove balance of obcs controls from default
834      - fix index bug nobcs in ctrl_init
835      - fix dummy fields filen in ctrl_pack
836      - add dummy weights for obcs
837    o lsopt: comment out fort.94 output
838    o optim:
839      - remove unnecessary header files
840      - adjusted namelists
841      - add xerbla.F to Makefile
842    o exf:
843      - multiple modifications of exf_check_range
844      - unit change in exf_init_runoff from [m/year] to [m/s]
845    o mdsio:
846      - i/o-vector change debugLevel from debLevA to debLevB
847    
848    checkpoint56b_post
849    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
850      is called from DO_THE_MODEL_IO
851      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
852      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
853      - clean up PTRACERS_WRITE_TIMEAVE a little
854    o add another verification experiment that tests both the cfc-pkg and
855      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
856      reactive tendencies treated inline with regular timestepping
857    o testreport previously did a lousy job of comparing small numbers, so
858      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
859      implemented in the little c-progam tmp_cmpnum.c which is embedded in
860      testreport.
861    o ptracers_monitor: bug fix for MPI
862    
863    checkpoint56a_post
864    o GCHEM: finish reorganizating the package
865      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
866        (introduces another 3D-array for each passive tracer, but only if
867        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
868        gchemTendency is not needed because the timestep is done separately)
869      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
870      - GCHEM is now---more or less cleanly---separate from PTRACERS
871      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
872        so clear to me how that should be done in a general way.
873    o CFC: improve formatting of output in CFC_ATMOS
874    o PTRACERS:
875      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
876        that ALL experiments with ptracers enable can be checked. This makes
877        GCHEM_MONITOR obsolete.
878      - include a runtime parameter PTRACERS_monitorFreq that defaults to
879        monitorFreq
880      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
881    o add PTRACERS (PTR0[1-5]) to testreport output
882    o exf_check_range:
883      * default changed to .TRUE.
884      * will check values for niter0 if debLevA, every timestep if debLevB
885      * STOP in exf_check_range if 'out of range'
886      * range chosen generous to allow for potential extema
887      TBD: a version with stricter range
888           permitted range would be runtime parameters
889    o GMredi:
890      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
891      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
892      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
893    o GCHEM:
894      - move call to GCHEM_FORCING_SEP, so that it is now called before
895        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
896      - introduced a useGCHEM runtime flag and applied it everywhere.
897      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
898        this flag is now only visible within GCHEM-pkg routines.
899      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
900        be replaced by a 3D array that is computed before thermodynamics; for
901        this, the tracer ID iTracer had to be included into the parameter list
902        of ptracers_forcing
903      - set up forward_step to call gchem_forcing, that will replace
904        gchem_forcing_int in ptracers_forcing
905      - cleaning up
906    o small cleaning of exch2: remove files that are also in eesupp/src
907    
908    checkpoint56
909    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
910    o mnc: cleanup "full" files--fixes out-of-memory problem
911    o ECCO-GODAE
912      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
913      * fully merged and updated from SIO code
914        windstress sign change affects
915        - exf_inscal_[u/v]stress
916        - sign of xx_tau[u/v] adjustments
917        - signs in cost_scat
918      * ctrl_get_gen: avoid update of tau[u/v] for first few days
919      * natl_box_adjoint updated and compressed
920      * 2-level checkpoint switch added
921        (tested in EXP. 1 of natl_box_adjoint)
922      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
923    o SVD
924      * first complete, non-hacked version for SVD calculations
925      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
926        performed via direct access files admtlm_vector.it????
927        (via ctrl_[un]pack)
928      * optimcycle is used for ARPACK iteration counter
929        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
930      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
931        and add linear transforms where necessary
932      * controls are initial/final SST, SSS (can be extended; need to check
933        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
934    o mdsio: filename info to both stderr, stdout
935    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
936      from sign change
937    
938    checkpoint55j_post
939    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
940      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
941    o add consistent build directories and .cvsignore files to verification
942    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
943    o make all subroutines 30 or less characters in length for certain older
944      compilers to work (a thorough search only turns up two routines in
945      pkg/ptracers)
946    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
947      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
948    
949    checkpoint55i_post
950    o change arrays for total vertical diffusivity (2.D if explicit,
951      3.D if implicit) ; each ptracer uses its own background value.
952    o added mnc/NetCDF output capability to ocn_compon_interf
953      - added bits to verification/cpl_aim+ocn so that it can run on
954        ITRDA and other clusters without the mpirun "-wd" option
955    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
956      configuration
957    o give MNC the ability to create additional files rather than
958      exceeding a specified file size limit "MNC_MAX_FILESIZE"
959      - the default is just less than 2GB which is a practical limit
960        on many systems
961    o Compute the non-local term using either KPP vertical diffusivity (=default)
962       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
963    
964    checkpoint55h_post
965    o add verification test "vermix"
966    o remove all the *_ioinc flags and replace with the single global
967      outputTypesInclusive flag
968    o allow to set a vertical profile of vertical diffusivity for T & S
969    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
970    o useMNC moved from data.mnc to data.pkg
971    
972    checkpoint55g_post
973    o Renaming carbon AD experiments to comply with testreport conventions
974    o Updating adjoint of Held-Suarez hs94.1x64x5
975    o Fixing directives for non-ECCO forward_step, after ECCO directives
976      have been fixed to avoid recomp. of do_oceanic_phys
977      Works well for global_ocean.90x40x15,
978      but recomp. issue remains for carbon
979    o Updating adjoint output for natl_box_adjoint after
980      pkg/ecco has been modified (see taga c55d_post)
981    
982    checkpoint55f_post
983    o rename to timeave_init_fixed
984    
985    checkpoint55e_post
986    o some delicate re-shuffle of store directives to avoid one
987      extra call of do_oceanic_physics
988      affects ecco_the_main_loop.F, do_oceanic_physics.F
989      checkpoint_lev1_directives.h
990    o NB: this may break global_ocean adjoint temporarily,
991      but it is clear how to fix it. Will do later, need this now.
992    
993    checkpoint55d_post
994    o ECCO specific cost function terms (up-to-date with 1x1 runs)
995    o ecco_cost_weights is modified to 1x1 runs
996    o modifs to allow observations to be read in as
997      single file or yearly files
998    o enable to read exf forcing fields as either
999      single file or yearly files (flag useExfYearlyFields)
1000    checkpoint55d_pre
1001    
1002    o switch between 2-level and 3-level checkpointing
1003    o add ability of MNC to write local and "partial" (eg. 2D slices where
1004      the full 3D field is never actually stored) arrays to NetCDF files
1005      with the correct (that is, the complete multi-dimensional) set of
1006      array indicies
1007      - used in mom_vecinv() to write the diagFreq output
1008      - tested (demonstrated) in verification/aim.5l_cs
1009    o further mnc-ification
1010      - add verification/lab_sea to the list with mnc setups
1011      - fix undefined mnc v-names in cd_code
1012      - add kpp to mnc output (both snapshot and timeave)
1013    o non-hydrostatic code
1014      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1015        in calc_gw.F
1016      - defaults to viscAh
1017      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1018        friction or Leith) in non-hydrostatic mode, as long as there is
1019        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1020    o pkg/cost
1021      extend simple cost functions to treat time mean quantities
1022      (T,U,V) via cost_accumulate_state from cost_tile
1023    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1024        be 2 times larger than the minimum size the advection scheme requires.
1025        now get a perfect conservation of salt in advect_cs test-exp (updated)
1026    o GGL90 (Gaspar's TKE mixed layer)
1027      - add horizontal diffusion of TKE, requires exchanges in
1028        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1029        default. In OPA there is no horizontal diffusion of TKE but the
1030        mixing coefficients are computed from a horizontal average of TKE of
1031        6 points or so. I think that diffusion has a little more physical
1032        justification.
1033      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1034        was in vain)
1035      - mask tke-variable in ggl90_init
1036    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1037    o fix biharmonic diffusion on CS-grid.
1038    o more obcs stuff
1039      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1040        for reading boundary values. This routine is called from
1041        obcs_prescribe_read
1042      - updated obcs_check
1043      - changed sponge layer relaxation parameter units for days to seconds
1044      - turned off sponge layer by default
1045      - changed argument list of OBCS_CALC to myTime+deltaTclock
1046      - fixed about 35 bugs in obcs_external_fields_load
1047    
1048    checkpoint55c_post
1049    o obcs stuff
1050      - new runtime flags useOBCSprescribe, useOBCSbalance
1051      - re-arranged obcs_calc
1052      - moved exf_getobcs to obcs_prescibe_read
1053        obcs_prescibe_read is called after ORLANSKI stuff
1054        and independent of it (executable can contain all).
1055      - updated obcs_check
1056      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1057        These may be necessary only if tangential velocities are
1058        prescribed at OB, not sure, needs testing.
1059    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1060      which simplifies the calls and passes the ifc check-bounds test
1061    
1062    checkpoint55b_post
1063    o add a 2D scalar, Z location, exchange_2 routine.
1064    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1065      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1066      affects advect_cs results (for the wrong reason): update output.txt
1067    o use a more standard discretization for biharmonic viscosity ;
1068     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1069      affects results of dome set-up: update output.txt
1070    o fix gad_advection.F (CubedSphere part), back to version 1.23
1071    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1072    
1073    checkpoint55a_post
1074    o merged code to
1075      * prescribe/read time-dependent open boundaries
1076        (works in conjunction with exf, cal)
1077      * sponge layer code for open boundaries
1078      * each boundary N/S/E/W now has its own CPP option
1079        (healthy for the adjoint)
1080    
1081    checkpoint55
1082    o up-to-date adjoint of previous breaks
1083      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1084      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1085      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1086      - carbon: * remove tr1-related adjoint verification
1087                * add ptracer as control variable
1088    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1089      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1090    
1091    checkpoint54f_post
1092    o in verification/carbin/ remove experiment related to
1093      ALLOW_PASSIVE_TRACER (array tr1 etc)
1094      code_ad/ input_ad/ results_ad
1095    
1096    o add two new packages
1097      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1098        + subject to optimization (memory)
1099      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1100        + subject to reordering (many GOTOs in the original code)
1101        + so far opps is called for every (i,j) point, and then operates in
1102          the vertical; one may want to reorder the scheme in order operate in
1103          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1104          fields)
1105    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1106      - all verification tests compile and run with linux_ia32_g77
1107      - defaults are compatible with current input files--nothing
1108        should change if you were not previously using MNC
1109      - MNC output has been added in numerous places (eg. timeave)
1110        but there are still a few writes not yet do-able with MNC
1111        (this is in progress)
1112      - flags now allow for either/or/both use of MDSIO and MNC and
1113        documentation will soon follow
1114      - numerous small formatting cleanups for ProTeX
1115    o add version info (via BUILD_INFO.h) to MNC and stdout
1116    
1117    checkpoint54e_post
1118    o add two new packages
1119      - pp81 (Packanowski and Philander, 1981), Richardson number and
1120        stratification dependent mixing
1121      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1122      - these scheme operate in a similar manner as KPP (without ghat, of
1123        course), however there is only one diffusivity that is used for both
1124        temperature and salinity (and passive tracers)ç
1125    o add offline package
1126    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1127      provided by Stephanie Dutkiewicz
1128    o genmake2: add ability to search for C compilers and cleanup test output
1129      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1130    
1131    checkpoint54d_post
1132    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1133    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1134      leading to additional shift by 5 days each year of integration
1135       (i.e. leading to considerable offset over the years)
1136    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1137    o start with no AB and no initial filtering (staggerTimeStep):
1138      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1139    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1140      (external loading & cpl import/export stay in forward_step.F)
1141    o update coupling interface to work with new staggerTimeStep
1142    o change MDSIO ptracers_pickup.
1143    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1144    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1145    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1146    
1147    checkpoint54c_post
1148    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1149      this affects (truncation error) output.txt of test-exp:
1150       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1151    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1152    o change Qnet to always be the net heat flux, (+upward).
1153      affects (truncation error) output of natl_box exp.: updated
1154    o define the max number of passive tracers in PTRACERS_SIZE.h
1155    o start to test mnc routinely in exp0
1156    o add sea-ice loading (sIceLoad) as a new forcing field.
1157    
1158    checkpoint54b_post
1159    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1160       impressive on Altix and Opteron systems)
1161    o diagnostics can now write NetCDF files through the mnc package
1162    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1163    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1164    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1165      affects (truncation error) output of lab_sea & natl_box exp.: updated
1166    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1167    
1168    checkpoint54a_post
1169    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1170    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1171    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1172    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1173      + internal_wave (shift in writing cg2d_ini_res)
1174    checkpoint54a_pre
1175    
1176    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1177      - modified verification/lab_sea and natl_box_adjoint accordingly
1178    
1179    checkpoint54
1180    checkpoint53g_post
1181    o prepare splitting of thermodynamics: store convect.counter in common block
1182    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1183      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1184    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1185    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1186    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1187    o restore adjointability
1188    
1189    checkpoint53f_post
1190    o modifications that affect AIM experiment results (update output.txt):
1191      - no advection of S at top interface Nr (pkg/generic_advdiff)
1192      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1193    o AIM pkg:
1194      - include stability function into surf.Flux derivative relative to Tsurf
1195      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1196    
1197    checkpoint53e_post
1198    o merged cylindrical coord configuration
1199    o added rotating_tank experiment
1200    checkpoint53e_pre
1201    
1202    checkpoint53d_post
1203    o faulks upgraded: re-generate output.txt that have changed:
1204       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1205    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1206    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1207    o added Sadourny discretization of Coriolis
1208      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1209      - re-enabled use of omega3 (useAbsVorticity)
1210    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1211      vector-invariant equations
1212      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1213    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1214      hopefully without new bugs
1215      - still to do: biharmonic friction for non-hydrostatic w
1216    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1217    o regenerated output for global_ocean_ebm (using -ieee)
1218    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1219      of mom_common/
1220      - simple re-arrangement of instructions within computing loop
1221    checkpoint53d_pre
1222    
1223    checkpoint53c_post
1224    o new version of coupler for AIM+thSIce and Ocean models
1225     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1226     - land: change Evaporation of snow
1227     - aim with thSIce: fix bug in snow-precip.
1228    o changes to calc_gw.F
1229     - bug fix for w^2 term near the bottom boundary
1230     - (hopefully) improve the lateral slip boundary condtions for use with
1231        partial/looped cells
1232      - because the bug fix changes two verification experiments anyway (exp5
1233        and plume on slope), change the lateral boundary condition from half slip
1234        to the value of no_slip_sides
1235    o ebm package wasnt quite up to the parallel task. Fixed that.
1236    o Adjoint of EBM package + verification
1237      * TLM OK
1238      * ADM not sufficient accuracy yet (needs further testing)
1239    
1240    checkpoint53b_post
1241    o Commiting new energy balance model to repository
1242      * package is pkg/ebm
1243      * verif. is verification/global_ocean_ebm
1244      * references are in ebm_driver.F
1245    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1246    C        Global thermohaline circulation. Part I:
1247    C        Sensitivity to atmospheric moisture transport.
1248    C        J. Climate 12(1), 71-82
1249    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1250    C        Global thermohaline circulation. Part II:
1251    C        Sensitivity with interactive transport.
1252    C        J. Climate 12(1), 83-91
1253    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1254    C        Destabilization of the thermohaline circulation
1255    C        by atmospheric eddy transports.
1256    C        J. Climate 7(12), 1870-1882
1257    o Will need long integration testing.
1258    checkpoint53b_pre
1259    
1260    o created pkg/mom_common in preparation for variable viscosity code
1261    o renamed and split ini_mnc_io
1262    o pkg/land: only liquid water can diffuse or run-off
1263    o AIM using land: soil wetness availability account for snow
1264    o added printMapIncludesZeros to EEPARMS namelist
1265    
1266    checkpoint53a_post
1267    o restore TAMC compatiility for exf_constants.h
1268      (no usage of _d in .h)
1269    o Additional storing in KPP in an attempt to fix
1270      TAMC problem with adjoint of KPP code.
1271      (no success...)
1272      Identical code works fine with TAF.
1273    o Fixed verification/natl_box_adjoint experiments.
1274      Initial conditions for Experiments 4 and 5 are now
1275      set to "SEAICE_initialHEFF=0", which is more reasonable,
1276      and hence gives results closer to that of Experiment 2.
1277      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1278    
1279    checkpoint53
1280    o stable checkpoint with up to date adjoint
1281      TLM tests only run for 1st grdchk at the moment. Its unclear if
1282      this is a code problem or a problem with resetting code for g_
1283      variables that is being autogenerated wrong.
1284      Otherwise:
1285       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1286       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1287         are both still in chaos following their security messes.
1288    
1289    checkpoint52n_post
1290    o various build (mostly genmake2) changes including:
1291      - ability to build/run more easily within Cygwin and MacOS X
1292      - more complicated Makefiles with a stronger dependence on Gnu Make
1293    o pkg/seaice modifications
1294      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1295        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1296        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1297      - changed proxy for geostrophic velocity and updated
1298        verification/lab_sea/results/* accordingly
1299      - removed ADI dynamic solver from pkg/seaice
1300      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1301        they caused a segmentation fault under certain circumstances
1302      - removed unused field WATR
1303    o bug fix in exf-package:
1304      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1305         now reflect that.
1306    o small fixes in the cal-package:
1307      - set reference date to first of January for the 'model'-calendar
1308      - failing of cal_CheckDate in cal_FullDate now actually results in a
1309        warning
1310    o small modifications in exf-package to increase flexibility:
1311      - change climtempfreeze from a constant to a runtime parameter that
1312        is specified in data.exf_clim (default = -1.9)
1313      - introduce runtime parameter windstressmax (default = 2.0) that is
1314        specified in data.exf
1315    o fix in pkg/thsice:
1316      - update Evap (Tsf changes) to be consistent with Latent heat flux
1317      - maintain snow precipitation unchanged (even if Tsf >=0).
1318     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1319    
1320    checkpoint52m_post
1321    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1322      this does not change any of the results, because myIter=0 in swfrac always
1323      lead to jwtype=2 (the default anyway), but the call makes little sense
1324      as a default
1325    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1326    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1327      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1328    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1329    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1330    o extending useSingleCpuIO option to work with new exch2 I/O format
1331      - old-style, missing-tile I/O is still accessible by defining CPP
1332        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1333    o monitor package can write to NetCDF files and/or STDOUT
1334    o fix re-definition bug in MNC_GRID_INIT_ALL()
1335    o doc/api_reference added
1336      - a framework for building an API Reference Manual using all
1337        the "protex" comments embedded in the code
1338      - see pkg/generic_advdiff, pkg/mnc for examples
1339    o MNC:
1340      - make myThid the last argument for all subroutines
1341      - new default for the grid files: NO halos
1342      - add useMNC and other run-time flags
1343      - separate per-file-group handling of the unlimited dimension
1344      - early initialization of MNC w/ flags read at the eeboot stage
1345        and lookup tables set in initialize_fixed
1346      - write all MNC output to a freshly-created directory
1347    o thermodynamics sea-ice (thsice) is now tested with testreport.
1348    o test exp. advect_cs: use the standard cs32 grid ; update output.
1349    o Added functionality to grdchk:
1350      pick global i,j,k position (or nearest wet) where to perform check.
1351    
1352    checkpoint52l_post
1353    o new land formulation:
1354      a) use ground enthalpy as prognostic variable to ensure exact
1355         energy conservation.
1356      b) account for water temperature and for latent heat of freezing
1357         in all processes (rain, run-off, ground storage)
1358      c) compute surface and ground temperature implicitly.
1359    o aim_v23 modification for new land model:
1360      a) Treat separately land / ocean / sea-ice surface fluxes
1361         to allow implicit computation of land & sea-ice surface temp.
1362      b) add snow precipitation.
1363    checkpoint52l_pre
1364    
1365    o fix problem (when 1 tile is empty) in min/max monitor.
1366    o fix bug in timeAve (u,vZetatave in common block)
1367    o no restoring terms under ice for pkg/seaice
1368    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1369    o bug fix for pkg/seaice pickups
1370    o change MNC call locations and add coordinate attributes
1371    o mask vorticity at the corner ; affects global_ocean.cs output
1372    o fix ini_curvilinear_grid ; test CS experiments with mpi
1373    o aim.5l_cs: modify sea-ice fraction input file ; update output
1374    o exf: Adding simple range check routine for exf fields after read
1375    
1376    checkpoint52k_post
1377    o removed top-level directory "diags"
1378      - we migrated these functions to pkg/timeave a long time ago
1379    o fixed bug introduced in pkg/monitor
1380    o accuracy ctrlprec = 32 insuffient for gradient checks using
1381      averaged fields (I/O via cost_averages)
1382      -> use ctrl.h in active_file*.F to control I/O precision.
1383    o paramter list of CALL ADTHE_MAIN_LOOP
1384    o added initial do_the_model_io to ecco
1385    o set all ...Freq to zero after cost_final
1386      taveFreq, dumpFreq, pChkptFreq
1387    o MAIN and ECCO differentiability restored
1388    
1389    checkpoint52j_post
1390    o fix nchklev in tamc.h for global_ocean...
1391    o Bringing flow and store directives up-to-date
1392    o Really weird thing!
1393      call do_the_model_io from the_main_loop with parameters
1394      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1395      TAF places a faulty re-call of initialise_varia
1396      after cost_final call which should not be there!
1397    checkpoint52j_pre
1398    
1399    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1400      error messages
1401    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1402    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1403      debug output
1404    o modfied mdsio_writefield.F to handle non-global files under exch2
1405    o update AIM Cubed-Sphere exp (aim.5l_cs):
1406      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1407    o update AIM Equatorial Channel exp:
1408      use standard aim_v23 pkg and change the SST fields to be more realistic.
1409    o globalFile now works with exch2
1410    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1411      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1412    o limit timeave output for hi-res integrations
1413    
1414    checkpoint52i_post
1415    o removed CPP_EEOPTIONS.h from verification/*/code
1416    o updated the tiling for global_ocean_pressure
1417    checkpoint52i_pre
1418    
1419    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1420      the old pkg/aim).
1421    
1422    checkpoint52h_pre
1423    o shortened offending lines in exch2_send_rx?.template
1424    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1425    o genmake2: add build & execute test for NetCDF code
1426    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1427      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1428    o added useSingleCPUIO flag to monitor.F and mon_out.F
1429    o added temporary hack for sea-ice dynamics on the cube:
1430      metric terms are ignored and it is assumed that
1431      there is no sea-ice on cube faces 1, 2, 4, and 5.
1432    
1433    checkpoint52f_post
1434    o added exch2 cube routines to pkg/exch2
1435    o modified hs94.cs-32x32x5 to use it
1436    o added new grid files to hs94.cs-32x32x5
1437    checkpoint52f_pre
1438    
1439    checkpoint52e_post
1440    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1441      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1442    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1443      to work with implicit vertical advection and AB ;
1444    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1445    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1446     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1447    checkpoint52e_pre
1448    
1449    o fix bug in impldiff when Nr=1 or Nr=2.
1450    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1451    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1452    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1453      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1454    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1455    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1456    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1457    
1458    checkpoint52d_post
1459    o re-tiled many expts to allow comparison in multi-processor mode
1460      - updated output accordingly
1461      - changed hs94.128x64x5 to use intial T from file rather than use the
1462        random number generator
1463    o add infrastructure in model routines for fizhi and gridalt packages
1464    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1465    o changes to permit hi-res, cubed-sphere, configuration
1466      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1467      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1468      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1469        of surface winds for the cube
1470      (A verification experiment, based on global_ocean.cs32x15, but with
1471       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1472       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1473       complete with example surface forcing files and matlab scripts to look
1474       at the output and compare it with that of global_ocean.cs32x15.)
1475    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1476       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1477       to conform to the common rule.
1478    o check-in the first version of the coupler + interfaces for multi-components
1479       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1480       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1481       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1482       - ocean and atmos. share the same horizontal grid (no interpolation).
1483       - exchanges between component and coupler is done in forward_step
1484    o new verification experiment, cpl_aim+ocn:
1485       coupled ocean - AIM atmosphere on cs32 grid.
1486    
1487    checkpoint52d_pre
1488    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1489    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1490    
1491    checkpoint52c_post
1492    o Fixing OPTIONS files for use of exf:
1493      - ALLOW_ECCO not needed
1494      - ECCO_CPPOPTIONS.h should not be included from
1495        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1496        as has been the case in the past
1497      - All cal/exf related options are currently set in
1498        single header file. Should remain so until we
1499        agree on a consistent new policy.
1500    o Removed all CPP options for cal package.
1501      cal has no more CPP options.
1502    o modified STOREs in GAD_ADVECTION
1503    o corrected key comp. for passkey
1504    
1505    checkpoint52b_post
1506    o new version: "thsice" of thermodynamic sea-ice pkg:
1507     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1508     - modify fluxes but do not change theta directly;
1509     - light cleaning of bulk_force pkg (still needed with thsice).
1510     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1511       + output_thsice.txt to test thsice & bulk_force pkgs.
1512    o put back grid & coriolis monitor output.
1513    checkpoint52b_pre
1514    
1515    o call "do_the_model_io" at the beginning (=> dump initial state)
1516    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1517    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1518      (need info on NUMBER_OF_PTRACERS)
1519    o missing PTRACERS headers in some routines
1520    o default tamc.h in pkg/autodiff supposed to crash
1521      to ensure proper customization
1522    
1523    checkpoint52a_post
1524    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1525      - moved surfaceTendencyTice from pkg/seaice to main code
1526      - subroutine FREEZE_SURFACE now limits only surface temperature
1527        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1528        => new output.txt for global_ocean.cs32x15 & global_with_exf
1529      - keep the old version of FREEZE for backward compatibility;
1530        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1531      - corresponding modifs for TAF directives
1532    o added surface flux output variables to TIMEAVE_STATVARS
1533    o time-averaged output for pkg/ptracers
1534    o fix problem with ECCO-related divided adjoint
1535      snapshot file was missing some ad-variables,
1536      but no warning issued by TAF
1537    
1538    checkpoint52a_pre
1539    o some bug fixes for #undef REAL4_IS_SLOW
1540    
1541    checkpoint52 = ecco_c52_e35
1542    o after testing adjoints of checkpoint51u_post
1543    
1544    checkpoint51u_post
1545    o this is the post-merge tag of the ecco-branch
1546      (needs another clean checkout and re-testing)
1547    o various natl_box_adjoint configs and results
1548      but no input fields
1549    o obcs adjoint not yet merged!
1550    o adding ECCO global 1x1 and 2x2 degree configs
1551    o updated/extended some store directives for seaice
1552    o pkg/ecco now containes ecco-specific part of cost function
1553    o top level routines the_main_loop, forward_step
1554      supersede those in model/src/
1555      previous input data.cost now in data.ecco
1556      (new namelist ecco_cost_nml)
1557    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1558    
1559    checkpoint51t_post
1560    o this is the pre-merge tag of the ecco-branch
1561    
1562    checkpoint51s_post
1563    o cleanup: removed various obsolete #define-s
1564    o pkg/grdchk
1565      - renamed 'ph-grd 3' to 'grad-res'
1566      - merged from ecco-branch
1567        (remaining bug fixes for obcs gradient checks)
1568      - additional high-precision output for testreport
1569        (grep for 'precision_grdchk_result')
1570    
1571    checkpoint51r_post
1572    o cleaned up or removed CPP_OPTIONS.h files
1573    o updated results for some of the tests to reflect the new
1574      optfiles (-ieee: -O0 instead of -O3)
1575    
1576    checkpoint51q_post
1577    o cd_code:
1578      - moved cd_scheme.F -> cd_code_scheme.F
1579      - separate read_checkpoint from cd_code_ini_vars.F
1580      - separated cd_code part from write_checkpoint
1581      - updated AD_SOURCE, generated .flow
1582      - added CD_CODE_VARS.h to the_main_loop
1583      - Moving cd_code specific store dir.s to pkg/cd_code
1584    o ctrl package totally restructured
1585      - pack/unpack now optional and decoupled from
1586        xx_/adxx_ I/O
1587      - ctrl_pack/unpack cleaned
1588        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1589      - confined inclusion of AD_CONFIG.h to where necessary.
1590    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1591    
1592    checkpoint51p_post
1593    o create initial cd_code package
1594      - WARNING: the initialization of fields within packages
1595        is broken because INI_FIELDS (where READ_CHECKPOINT is
1596        called) is called *before* PACKAGES_INIT_VARIABLES.
1597        This seems to be backwards since
1598        1) its important to initially zero the entire field including
1599           the "halo" region
1600        2) zeroing needs to be done *before* reading pickup info
1601           and the pickup call might or might not happen in any
1602           particular run
1603      - this needs an overhaul for R2
1604    o cleanup verification/*/code/GMREDI_OPTIONS.h
1605    o cleanup testreport
1606    
1607    checkpoint51o_post
1608    o bringing AD-related verif's up to date with genmake2
1609      - carbon/
1610      - global_ocean.90x40x15/
1611      - hs.94.1x64x5/
1612      - (front_relax/ )
1613    o (more) consistent directory structure for AD-related verif.'s
1614    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1615    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1616    o bug fix in find_alpha.F for MDJWF:
1617      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1618        change rho -> rho-rhoConst
1619      - replace call find_rho to find_rhonum
1620    o initialisation of rFlx extended to full array (required by TAF)
1621      and shifted to thermodynamics
1622    o removed PTRACERS.h in ptracers routine
1623    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1624    o Correcting initialisations for fVerU, fVerV.
1625    o helping TAF to recognize dependency on kUp for
1626      fVerU, fVerV
1627    o Replacing delZ by delR in pkg/ctrl/
1628    checkpoint51o_pre
1629    
1630    o undid all of cp51 pending some cleanups and discussion
1631    o added the [#include "AD_CONFIG.h"] statement to all files that need
1632       it for adjoint/tl #defines
1633     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1634     o removed tools/genmake since it no longer works
1635    
1636    checkpoint51n_post
1637    o modifications to make FREEZE flux visible to pkg/kpp
1638      - moved surfaceTendencyTice from pkg/seaice to main code
1639      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1640      - subroutine FREEZE now limits only surface temperature
1641        (this means new output.txt for global_ocean.90x40x15,
1642         global_ocean.cs32x15, and global_with_exf)
1643    o added surface flux output variables to TIMEAVE_STATVARS
1644    
1645    checkpoint51n_pre
1646    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1647    o added [#include "AD_CONFIG.h"] to all files that use the following
1648      defines:
1649      - ALLOW_ADJOINT_RUN
1650      - ALLOW_TANGENTLINEAR_RUN
1651      - ALLOW_ECCO_OPTIMIZATION
1652    
1653    checkpoint51m_post
1654    o incorporating changes to get TAMC/TAF working in genmake2
1655      - added new TAMC/TAF targets to the Makefile
1656      - various cleanups related to package handling
1657      - these changes should have no impact on the forward model
1658    
1659    checkpoint51l_post
1660    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1661     - faster algorithm for cal_addtime.F
1662     - higher precision arithmetic, where needed
1663     - pkg/exf *startdate variables changed from calendar date to
1664       model integration time
1665    
1666    checkpoint51l_pre
1667    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1668    o enable to apply restoring on S & T only in a latitude band.
1669    o update output (external_forcing_surf modif. change truncation errors)
1670       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1671    
1672    checkpoint51k_post
1673    o change default to: useNHMTerms=.FALSE.
1674     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1675       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1676     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1677        exp1, ideal_2D_oce
1678     - change data file of oceanic exp (leave the results unchanged for now)
1679       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1680    o set gravitySign automatically according to the vertical coordinate used
1681      (and change sign: back to "logical" value: +1 when R increases downward)
1682    o added an include barrier to the default CPP_OPTIONS.h and
1683      removed the #include "PACKAGES_CONFIG.h" from it
1684    o fix a bug in mom_fluxform (from chk51j_post)
1685    
1686    checkpoint51j_post
1687    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1688    o adjusted some flow directives (dynamics, thermodynamics)
1689    o added cubed-sphere case to test cost function
1690    o heckpoint_lev?_directives.h now include
1691      pkg-specific directives, whenever those are enabled.
1692    o Moving pkg-specific flow directives to corresponding pkg
1693      Moving pkg-specific differentiation list to corresponding pkg
1694      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1695      ---> conventions are
1696           - pkg_ad.flow
1697           - pkg_ad_diff.list
1698           - pkg_ad_check_lev?_dir.h
1699    
1700    checkpoint51i_post
1701    o merge of the branch-genmake2
1702      - knowingly breaks the older genmake
1703      - automatic generation of all ALLOW_${PKG_NAME} defines
1704      - new testreport supersedes older testscript
1705    o large number of package inclusion and header cleanups
1706    checkpoint51i_pre
1707    
1708    o new output for adjoin of global ocean vector invariant
1709    o fix for checkpoint of thermodynamic seaice and bulk_force
1710    o Steph gchem various cleanups
1711    
1712    checkpoint 51h_pre
1713    o fixed some single quotes
1714    o modify gchem pkg to be more versatile
1715    o modifications to clean up dic pkg
1716    o add pkg/cfc
1717    
1718    checkpoint51g_post
1719    o provide links for ARPACK and ADM*TLM
1720    o start removing verification/vero/
1721    o update AD-related stuff
1722      (in particular some IF-statements in model/src/ routines)
1723    o adding to verification/global_ocean.90x40x15/ adjoint of
1724      vector invariant setup
1725    
1726    checkpoint51f_post
1727    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1728    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1729      of tracer Green's fucntions for ocean inversion project.
1730    
1731    checkpoint51f_pre
1732    o Added on-the-fly spatial interpolation capability
1733        "USE_EXF_INTERPOLATION" to pkg/exf.
1734      - This is a temporary Cartesian-grid hack until
1735        the super-duper ESMF coupler becomes available.
1736      - See verification/global_with_exf/README for usage example.
1737      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1738        flags and modified pkg/seaice accordingly.
1739    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1740        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1741        non-local transport term.
1742    
1743    checkpoint51e_post
1744    o pkg/mom_vecinv:
1745      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1746      - add time-ave diagnostic of vorticity advection.
1747    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1748    o atmospheric geopotential: - include water vapor effect;
1749                                - use p^kappa in p* scaling.
1750    o land pkg: read initial state from files.
1751    o AIM : add stratospheric drag in the upper level
1752    
1753    checkpoint51d_post
1754    o change function ILNBLNK (=> last non-blank char.) to return zero
1755      (instead of the string length) when the string. char is empty
1756    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1757    o modif's to restore TAMC compatibility
1758      - avoid "_d" constructs in PARAMETER declarations
1759      - avoid interrupting lines by comment lines
1760    o Use cluster local disks for purely local I/O
1761      vs. globally visible disks needed for ctrl stuff
1762      (merged from ecco-branch)
1763      - new active_file_loc... and mdsio_..._loc routines
1764      - affected packages: autodiff, ctrl, grdchk, mdsio
1765    
1766    checkpoint51c_post
1767    o introducing integer flag debugLevel
1768      - debLevZero: suppress all output
1769      - debLevA: standard
1770      - debLevB: equivalent to current debugMode=.TRUE.
1771    o introducing pathname variable mdsioLocalDir for mdsio
1772      that can be specified at runtime
1773      (relevant for cluster I/O to local disk)
1774    `
1775    >>>checkpoint51b_post
1776    adjoint of ptracers
1777    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1778    o extended state in checkpoint_lev?, etc.
1779    o alternative ctrl/cost with tr1 or ptracer
1780    o new comlev1_bibj_ptracers
1781    o new ptracers.flow
1782    o made ptracers_forcing same as external_forcing_s
1783    o added verification for adjoint with ptracers
1784      - adm. grdchk fail so far
1785      - tlm. grdchk OK
1786      - checked tapelev/comlev recomputations: OK
1787    <<<checkpoint51b_pre
1788    
1789    checkpoint51a_post
1790    o added code for biogeochemistry package
1791      - new pkgs: dic, gchem
1792      - new subroutine in ptracers
1793    o modify code for biogeo packages
1794      - in model/src and pkg/ptracers
1795    
1796    checkpoint51
1797    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1798      - autodiff, ctrl, exf, grdchk, seaice
1799      kept separate packages
1800      - cost, ecco, obcs
1801    o updating verification/internal_wave, verification/lab_sea
1802      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1803    
1804    checkpoint50i_post
1805    o Preparing next differentiable checkpoint and sync
1806      of MAIN vs. ecco-branch
1807      - 1st step: this one is differentiable
1808      - 2nd step: next(! not this) checkpoint will have updated packages
1809                  from ecco-branch)
1810    
1811    checkpoint50h_post
1812    o new package "land": provide surface BC for AIM.
1813    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1814    o AIM: use true log-P extrapolation for near surface temp (= as in
1815        F.Molteni paper) ; update aim.5l_cs output.
1816    o New variable in PARM03 for more flexible pickups
1817    o somewhat cleaned package initialisation sequence for
1818      ctrl/ cost/ ecco/ in packages_... routines
1819    
1820    checkpoint50g_post
1821    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1822      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1823      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1824        made the default because of faster convergence than ADI
1825    
1826    checkpoint50f_post
1827    o exf totally restructured
1828      - replaced all exf_set_ routines by one generic exf_set_gen.F
1829        and made sure it's still differentiable
1830      - split exf_getffields.F into new exf_bulkformulae.F
1831      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1832      - updated adjoint/makefile and relevant verif. accordingly
1833    
1834    checkpoint50f_pre
1835     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1836          + change Evap over land. (update aim.5l_cs output)
1837     o added missing .cvsignores and made uniform across expts
1838     o changed configuration of tidal_basin_2d expt
1839     o added pkg/debug functions for tracing code in fatal crashes
1840     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1841     o new fn in pkg/monitor to stop model if solution grows too big
1842     o removed lots of single quotes from comments
1843    
1844    checkpoint50e_post
1845    o make KPP work with PTRACERS
1846     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1847       nearly a copy of kpp_transport_s
1848     - there is no analogue to SurfaceTendencyS, so I have to use
1849       gPtr(of the surface layer) instead
1850    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1851    checkpoint50e_pre
1852    
1853    checkpoint50d_post
1854    o change kpp output from multiple-record state files to single-record state
1855      files analogous to write_state.F
1856    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1857      analogous to the cg2d-related output.
1858    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1859      so that writing to internal file fn (with length 512) fails.
1860    checkpoint50d_pre
1861    
1862    checkpoint50c_post
1863    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1864    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1865    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1866    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1867    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1868    
1869    checkpoint50c_pre
1870    Merging from release1_p13:
1871    o bug fix for pkg/seaice dynamic solver
1872    o Added SEAICE_initialHEFF to pkg/seaice
1873    
1874    checkpoint50b_post
1875    o store u*,v* in gU,V instead of in guNm1,gvNm1
1876    o in order to put the momForcing out of the Adams-Bashforth:
1877      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1878      to timestep.F
1879    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1880    o re-generate output for highly sensitive test-exp:
1881       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1882    
1883    checkpoint50b_pre
1884    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1885    o corrected CPP option mismatch in exf_Bulk... functions for case
1886      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1887    
1888    checkpoint50a_post
1889    o Bug fix for merging between c50 and KPP.
1890      ikey was passed from thermodynamics to kpp_calc via
1891      common block rather than being recomputed in kpp_calc,
1892      in contradiction with new key itdkey.
1893      New key ikppkey created, and tamc.h headers updated.
1894    
1895    checkpoint50
1896    - 2nd step of merge with ecco-branch:
1897      merge changes in ecco-branch back into main trunk
1898    - bug fix in find_alpha
1899    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1900    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1901    - merged some sliced AD support routines
1902    
1903    checkpoint49
1904    merged from ecco-branch:
1905    o exf:
1906      - Enable initialisation of forcing fields to constant
1907        (runtime) values.
1908      - in exf_getffields.F
1909        Reduce i-/j-loop to interior domain, discarding overlaps.
1910        That also fixes wrong TAF-key computations for key_1, key_2
1911        with bulf formulae.
1912      - exf_init.F modify #ifdef for exf_init_evap
1913      - exf_getffieldrec.F, ctrl_getrec.F
1914        The following INT-usages are not safe:
1915          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1916          fldcount = int(fldsecs/fldperiod) + 1
1917        and were modified.
1918    o autodiff: checkpoint_lev...
1919      - updated storing for bulk formulae (some arrays were missing)
1920      - added state for seaice package
1921      - synchronized with main branch
1922    o DIVA:
1923      Modif.s in
1924      - the_main_loop.F
1925      - the_model_main.F
1926      and added cost_final_restore.F cost_final_store.F
1927      o With these changes, it is possible to fully separate
1928        the first forward run to compute the cost function (mdthe_main_loop)
1929        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1930        into separate model executions.
1931        This enables better tuning of DIVA to given queue sizes.
1932      o Loss of cost function value in consecutive DIVA runs is
1933        fixed by storing to 'costfinal' file.
1934      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1935        beginning/end of adjoint integration is accounted for.
1936      The current changes apply to TAF-1.4.26.
1937      TAF has one remaining bug, requiring one manual change
1938      (see MITgcm manual).
1939    o cal: synchronized between MAIN and ecco-branch
1940    
1941    checkpoint48i_post
1942    o Changes to restore differentiability of code w.r.t. previous tag
1943      (mostly adding new routines to make list and replacing
1944      pressure by totPhiHyd).
1945    o Updated and merged grdchk package
1946      - has both ADM and TLM checks
1947      - works for single- and multi-proc.
1948      - output cleaned
1949      - worked successfully for parallel DIVA
1950    o genmake:
1951      - Adding -platform=SP4
1952      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1953    o Modif. for DIVA:
1954      ctrl_unpack should not be called in intermediate DIVA interval.
1955      (similar thing would apply for active files such as
1956      tbar, sbar, psbar, which should not be reinitialised;
1957      only relevant for ecco-branch)
1958    
1959    checkpoint48h_post
1960    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1961    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1962    o Added SEAICE_initialHEFF to pkg/seaice
1963    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1964    
1965    checkpoint48g_post
1966    --- EOS:
1967    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1968      store total Potential in totPhyHyd for diagnostics & EOS.
1969    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1970    --- Pressure/geopotential gradient:
1971    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1972    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1973      ( changes results of global_ocean_pressure )
1974    o NLFS + z-coord.: add eta*Rho' contribution.
1975    o accurate phiHyd when using interface-W at the middle between 2 centers
1976     ( changes results of ideal_2D_oce )
1977    o includes r* 2nd term in potential gradient.
1978    
1979    checkpoint48f_post
1980    Merging from release1_p12:
1981    o Modifications for using pkg/exf with pkg/seaice
1982      - improved description of the various forcing configurations
1983      - added basic radiation bulk formulae to pkg/exf
1984      - units/sign fix for evap computation in exf_getffields.F
1985      - updated verification/global_with_exf/results/output.txt
1986    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1987      (SBO) core products, including oceanic mass, center-of-mass,
1988      angular, and bottom pressure (see pkg/sbo/README.sbo).
1989    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1990      to avoid negative values in shallow regions.
1991      - updated verification/natl_box/results/output.txt
1992      - updated verification/lab_sea/results/output.txt
1993    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1994    o Added useSingleCpuIO option (see PARAMS.h).
1995    o Updated useSingleCpuIO option in mdsio_writefield.F to
1996      work with multi-field files, e.g., for single-file pickup.
1997    o pkg/seaice:
1998      - bug fix in growth.F: QNET for no shortwave case
1999      - added HeffFile for specifying initial sea-ice thickness
2000      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2001    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2002      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2003    o pkg/seaice:
2004      - adjoint-friendly modifications
2005      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2006    
2007    checkpoint48e_post
2008    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2009    o dynamics: change definition of computational domain & adapt mom_fluxform
2010      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2011    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2012        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2013        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2014        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2015        inverted_barometer solid-body.cs-32x32x1
2016      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2017    
2018    checkpoint48d_post
2019    o in preparation for r*:
2020     a) use pre-computed gradient of hydrostatic potential:
2021        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2022     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2023        => affects results of glob_oce_pressure (different truncation error)  
2024      update output.txt of ideal_2D_oce & global_ocean_pressure
2025    
2026    checkpoint48d_pre
2027    o in preparation for r*:
2028      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2029      pass the 2 comp. of the grad. as arguments to momentum S/R.
2030      but for the moment, only used if it does not change the results.
2031    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2032    
2033    checkpoint48c_post
2034    Modifications in treatment of initial flux forcing controls
2035    to avoid extra storing of flux fields.
2036    
2037    checkpoint48c_pre
2038    o Added tidal_basin_2d experiment (currently 1D!)
2039    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2040    
2041    checkpoint48b_post
2042    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2043     (modification to pressure gradient not yet implemented)
2044    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2045      (for U & V) that are used for vertical advection of momentum.
2046    
2047    checkpoint48a_post
2048    o In preparation for r*, use temp. array to compute vertical transport
2049       in flux-form momentum pkg. => change results of few test-exp.
2050      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2051                        lab_sea, natl_box & plume_on_slope
2052    
2053    checkpoint48
2054    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2055    
2056    checkpoint47j_post
2057    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2058    o moved adexch from forward_step to addummy_in_stepping
2059    o added exch in ctrl_map_...
2060    o aveFreq.=0. at end of cost_final to avoid overwrite in
2061      reverse checkpointing loop
2062    o Yet more changes in gmredi:
2063      * adgmredi_calc_tensor
2064        avoiding all recomputation of gmredi_slope_limit
2065      * adgmredi_x/y/rtransport
2066        added flag for excessive storing to avoid recomp. of
2067        u/v/rtans, dTdx/y/z
2068        -> this is not really necessary and very memory-consuming
2069      * adgmredi_slope_psi:
2070        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2071      * gmredi_slope_limit
2072        re-activated full calculation of taperfct for case 'ac02'
2073    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2074    
2075    checkpoint47i_post
2076    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2077    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2078      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2079    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2080    o gmredi: fix few bugs.
2081    
2082    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2083    This will be a good checkpoint to plug into the ecco-branch.
2084    o few modif.'s to get latest version adjointed
2085      (mainly kick out code in ini_linear_phisurf)
2086    o modif's to run adjoint with exactConserv
2087    o case GM_BOLUS_ADVEC should be cleaned
2088      S/R gmredi_slope_psi should be cleaned
2089    o verification/carbon now has exactConserv=.TRUE.
2090    
2091    checkpoint47g_post
2092    o time-average AIM output: becomes independent from statvars time-average
2093      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2094    o After TAF bug fix:
2095      Tested adjoint of gmredi package.
2096      Tests were done with checkpoint47 rather than with latest
2097      checkpoint47f_post since the latter is broken for the adjoint
2098      verification/carbon/ contains both ADM and TLM gradient checks.
2099    Here they are, before they get changed/lost/stolen.
2100    Mostly modif.'s to fix numerical sensitivities.
2101    Gradient checks OK for
2102    - GM_taper_scheme:
2103      * clipping
2104      * ac02
2105      * linear
2106      * glw91
2107      * dm95
2108      * ldd97
2109    - GMREDI_OPTIONS:
2110      * GM_VISBECK_VARIABLE_K
2111      * GM_NON_UNITY_DIAGONAL
2112      * GM_EXTRA_DIAGONAL
2113      * GM_BOLUS_ADVEC
2114    in conjunction with data.gmredi parameters to be checked in
2115    in a few minutes under verification/carbon/code/
2116    
2117    checkpoint47f_post
2118    Merging from release1_p10:
2119    o modifications for using pkg/exf with pkg/seaice
2120      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2121        and SEAICE_EXTERNAL_FLUXES
2122      - pkg/exf CPP options EXF_READ_EVAP and
2123        EXF_NO_BULK_COMPUTATIONS
2124      - usage examples are Experiments 8 and 9 in
2125        verification/lab_sea/README
2126      - verification/lab_sea default experiment now uses
2127        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2128    
2129    checkpoint47e_post
2130    o created a tag prior to creating a branch
2131    
2132    checkpoint47d_post
2133    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2134      at the bottom boundary had an erroneous half slip boundary condition
2135    o added bottom drag and no slip boundary condition capabilities to
2136      oceanic pressure coordinates code
2137    o added new verification experiment global_ocean_pressure, this experiment is
2138      also described in the tutorial section of the manual
2139    checkpoint47d_pre
2140    
2141    checkpoint47c_post
2142    o Added a verification experiment for a global cubed-sphere ocean run
2143      -  verification/global_ocean.cubed32x32x30
2144      -  uses pkg/therm_seaice and pkg/bulk_forcing
2145    
2146    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2147    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2148      when using P-coordinate; only implemented for atmospheric config.
2149    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2150      NOTES: requires option NONLIN_FRSURF to be "#define".
2151    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2152    
2153    checkpoint47b_post
2154    Merging from release1_p9:
2155    o pkg/seaice
2156      - removed GOTO's and added taf directives
2157      - double precision constants to reduce the g77 (Linux)
2158        to F77 (SGI) differences reported in release1_p8
2159    o tools/genmake
2160      - added SGI options
2161    o verification/testscript
2162      - updated to that of checkpoint47a_post
2163    o verification/global_ocean.90x40x15/input/eedata
2164      - modified for SGI f77 compatibility
2165    o verification/lab_sea
2166      - added description of sea-ice model
2167      - added missing matlab routines
2168      - added test of thermodynamics parallelization
2169    
2170  checkpoint47a_post  checkpoint47a_post
2171  o new pkg: aim_v23  o new pkg: aim_v23
2172   = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.   = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
# Line 13  o new pkg: aim_v23 Line 2177  o new pkg: aim_v23
2177  o add diagnostic of surface correction term in monitor output  o add diagnostic of surface correction term in monitor output
2178    
2179  o bulk_force and therm_seaice  o bulk_force and therm_seaice
2180    - Two packages:  bulk_force (Bulk forcing)
2181      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2182    - Earlier integration from Stephaine Dutkiewicz
2183      and Patrick Heimbach.
2184    - Two ifdef statements for compile time,
2185       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2186    
2187  checkpoint47  checkpoint47
2188  differentiable version of checkpoint46n_post  differentiable version of checkpoint46n_post

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