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revision 1.96 by adcroft, Tue Nov 5 19:15:12 2002 UTC revision 1.686 by jmc, Fri Jun 23 04:36:25 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 towards a standard way of dealing with multi-threading in MONITOR
8      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
9    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
10       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
11    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
12    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
13    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
14       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
15    o tracer advection:
16     - clean-up and simplify calc_common_factors.F
17     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
18       advection subroutine (but still not used within DST advection S/R)
19    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
20    
21    checkpoint58j_post
22    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
23      from file (collects calls previously in FORWARD_STEP)
24    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
25    o adjoint store dir. adjusted accordingly
26    o genmake2
27      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
28    
29    checkpoint58i_post
30    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
31      on wind stress (SEAICEstressFactor defaults to 1.)
32    o Total number of Timers is finite (<=40): comment out 2 non-essential one
33      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
34    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
35      on CS-grid: no longer loosing mass.
36    o exf & curvilinear-grid: no longer modify longitude xC & xG.
37    o pkg/ggl90: fix sloppy output and fix a bug
38    o pkg/seaice: added SEAICEuseEVPpickup parameter
39      - Set to false in order to start EVP solver with
40        non-EVP pickup files when using SEAICEuseEVP
41      - fix sign error in diffusion in seaice_calc_rhs
42    
43    checkpoint58h_post
44    * Modifications for bottom topography control
45      o replace hFacC by _hFacC at various places
46      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
47      o add non-self-adjoint cg2d_nsa
48      o update autodiff support routines
49      o re-initialise hfac after ctrl_depth_ini
50      o works for 5x5 box, doesnt work for global_ocean.90x40x15
51    * Adding verification for 5x5 box (4-layer) bottom topography control
52    
53    checkpoint58g_post
54    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
55       used for mean seasonal cycle, mean diurnal cycle); add an example
56       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
57    o pkg/ggl90:
58      - add parameter (minimum surface kinetic energy)
59      - fix bug (avoiding division by zero)
60    o couple pkg/thsice to pkg/seaice:
61      - modify advection in seaice to accomodate new scalar fields to be advected
62      - only muliDimAdection scheme work with seaice/thsice
63      - mapping of thsice-variables to seaice-variables, back and forth
64      - does not break the verification experiments, but does not give the
65        desired results either
66    o pkg/seaice
67      - make (default) second order advection a bit less confusing?
68    
69    checkpoint58f_post
70    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
71      to pkg/seaice):
72      - new routines thsice_map_exf and thsice_get_exf provide the interface
73      - add an additional formal parameter to thsice_solve4temp
74    o pkg/exf:
75      - add new fields wspeed, snowprecip (to be able to couple to thsice)
76      - correct Stefan-Boltzmann constant
77      - new parameter for longwave surface emittance
78      - separate some stuff from exf_bulkformulae into new routines  
79        exf_radiation, exf_wind
80      - add new parameters and constants: longwave emissivity for ocean, ice
81        and snow, evaporation parameters over ice
82      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
83        either wind from stress or stress from wind
84    o pkg/thSIce:
85    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
86    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
87       and THSICE_CALC_THICKN
88    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
89    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
90      to make debugging easier.
91    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
92    o pkg/bulk_force:
93      - clean-up comments and parameters ;
94      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
95    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
96      generate new output for test-experiment: aim.5l_cs.thSI
97    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
98      testreport accordingly
99    
100    checkpoint58e_post
101    o SEAICE_CGRID adjoint done
102    o R_STAR adjoint implemented.
103      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
104      * need to sort out init. of h0facc, etc.
105    o Make pkg/profile fully independent of ecco,cost, etc. stuff
106      to be able to use it in pure forward.
107    
108    checkpoint58d_post
109    o upgrade simple test-experiment to tutorial example:
110     step.1: duplicate the experiment and (step.2) will remove the old copy.
111      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
112      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
113      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
114      tutorial_global_oce_biogeo    <- copy of dic_example
115      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
116      tutorial_plume_on_slope       <- copy of plume_on_slope
117      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
118      tutorial_global_oce_optim     <- empty for now (David ?)
119      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
120     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
121    o correct a sign problem in cost_scat.F
122    o obcs and ptracers: fix boundary conditions for advections schemes
123      with larger stencil
124    o thsice adjoint: start
125    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
126      completeness
127    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
128      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
129    o ptracers adjoint:
130      * avoid extensive recomputatations
131      * fix missing re-init. of gptr (missed by TAF)
132    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
133      me to turn off the excessive output to STDOUT that this package produces
134    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
135      and add those terms in Vector-Invariant formulation.
136    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
137      if the control period (xx_hfluxperiod etc) is 0
138    o in profiles pkg, clean routines and fix details
139    o in ecco pkg, reading ssh data:
140      fix problem in case the model does not start at iter0=0
141    o fix mnc-pickup/restart for ptracers
142    o new package prifiles:
143      code to compute profile-based cost by Gael Forget
144      (modifs in ecco, ctrl, autodiff)
145    o Benign bug fix in initialization (spotted by M. Mazloff) of
146      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
147    
148    checkpoint58c_post
149    o adjoint: finish NLFS adjoint and provide reference output in
150      verification/global_ocean.90x40x15/results_ad_nlfs
151    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
152      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
153      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
154      with SEAICE_CGRID defined.
155    o move calendarDumps from "data" to "data.cal" and clean-up the code
156      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
157    o add useEXF & useCAL flags (for now, set in hard-coded way)
158    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
159      (were missing in NH mode, and wrong in quasihydrostatic mode).
160      waiting for Chris updated version of calc_gw to add those CALLs.
161    o fix bug in quasihydrostatic S/R ;
162      add a test for this option: global_ocean.90x40x15.qshyd
163    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
164      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
165    o add on/off flag useOffLine for package OFFLINE
166    o seaice:
167      - modify advection so that it works also on the C-grid
168      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
169        problem in multi-tile runs with C-grid
170      - add flags for clipping ice velocities and/or masking solver forcing
171      - fix drag (ocean on ice) formulation and a bug that caused noise in the
172        C-grid solver
173      - added a few comments to seaice_diffusion.F
174      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
175        are now exclusive)
176      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
177        required re-ordering the code a little:
178       + make DAIRN global variable (defined in SEAICE)
179       + move computation of the viscosities eta and zeta into a new separate
180         routine (because I need to recompute them in seaice_ocean_stress.F)
181    
182    checkpoint58b_post
183    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
184      update output.txt of exp. aim.5l_cs.thSI
185    o various mnc cleanups and improvements:
186      + shrink lookup tables by factor of ~4
187      + better error reporting when running out of lookup space
188      + able to handle longer path/file names (up to 500 chars)
189    o adjoint:
190      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
191      - TBD: "hidden" mom_vecinv recomp. in dynamics
192    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
193     (allow to differentiate between forcing components using new integer flags:
194      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
195     and add new flag to put Dissipation tendency out of Adams-Bashforth.
196    o ecco
197      - enable trend removal from SSH anomaly obs.
198    o adjoint
199      - a fix for PmEpR when #undef EXACT_CONSERV
200      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
201      - try to fix "hidden" recomp. in forward_step for NLFS
202        (NLFS seems broken sometimes after I checked it in)
203    o seaice:
204     - add c-grid version of the dynamic solver:
205       + three new routines that are the c-grid substitute lsr, dynsolver
206         and ostres
207       + put a few fields that were local to dynsolver into global common
208         blocks, so that I can move the computation of stresses etc into
209         seaice_lsr (saves coding but may break the adjoint).
210     - replace more hardwired parameters by runtime parameters
211     - add ice masks that mask the rhs of the implicit solvers where there
212       is no ice (commented out in seaice_dynsolver, because i am not sure
213       if this works properly), eventually this should replace the clipping
214       of ice velocities in seaice_dynsolver to +/-40cm/s.
215    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
216      include it only where its needed
217    o move balancing of fluxes before the call of external_forcing_surf
218    o seaice:
219      - correct units of turning angles (now they are really in degrees)
220      - move computation of GWATX/Y out of main routine into dynsolver
221      - initialize GWATX/Y in seaice_init
222    o Apply mask on Fresh-Water flux (needed for SSH forcing).
223      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
224    o seaice: add runtime flags for turning angles (default to zero)
225    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
226      and trend from exf forcing and ctrl control adjustments
227    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
228      (since checkpoint57x_post)
229    o change the default rotation period to 86164.s = the Earth rotation
230    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
231      and based on a reference stratification. Tested within hs94.cs-32x32x5.
232    o seaice advection: add code for choosing between the default (2nd order
233      central differences) and multiDim advection schemes provided by
234      pkg/generic_advdiff
235    o seaice:
236      - removed all references to SEAICE_GRID.h fields from
237        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
238        (cubed-sphere configuration will change a little)
239      - grid computations in seaice_init are obsolete now.
240      - cleaned up code a little so that is easier to read (hopefully).
241      - added new (better?) discretizations of default advection and diffusion
242        (turn on with SEAICEuseFluxForm)
243      - replace 1 in 3d global fields by kSurface in growth.F
244      
245    checkpoint58a_post
246    o seaice:
247      - bug fix in advect.F
248    o shelfice:
249      - separate shelfice load anomaly from pload (breaks with time
250        dependent forcing), => introduce constant field shelficeLoadAnomaly.
251        Its default is 0., but it may be computed more cleverly from (unknown)
252        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
253        done offline. A good approximation of the pressure load anomaly is
254        necessary to avoid large initial adjustment processes underneath
255        deep-reaching shelfice.
256      - small fix in ISOMIP shelfice_thermodynamics
257      - add more sophisticated thermodynamics of Hellmer (1989), this is
258        now the default
259      - give a few constants more intuitive names
260    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
261      if bulk formulae are used in long integration (especially EmPmR). Turn
262      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
263      if balancePrintMean, the imbalance that is substracted is printed to
264      STDOUT.
265    o fix bug (typo) in obcs_apply_eta.F
266    o add a new package shelfice which enables us to model the circulation
267      underneath shelf-ice with draughts of hundreds of meters.
268     - works
269     - to do: + include improved thermodynamics
270              + check whether kSurfC (from model/inc/SURFACE.h) can be used
271                instead of new field kTopC
272              + can we use topoFile, Ro_surf and existing code in ini_depth.F
273                instead of new field R_shelfIce and new code in ini_depth.F
274                and ini_mask_etc.F?
275              + adjust vertical mixing schemes?
276    o seaice pkg:
277     - add a cpp-flag to include a simple formula for a salinity dependent
278       freezing point of sea water at the surface
279     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
280       meridional stresses are now different (and hopefully correct)
281    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
282       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
283       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
284    o pkg/diagnostics: add options and parameters for regional-statistics
285       diagnostics ; define regions by reading a region-mask from a file
286       (might add other options later)
287    o pkg/bulk_force:
288     - add option and parameters to use AIM surface-flux formulae.
289     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
290       others forcing fields (defined in PARM05, parameter file "data") are loaded
291       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
292     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
293     - use the right EXCH call for uwind,vwind (to work on CS-grid).
294     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
295       and parameters (note: calcWindStress replaces .NOT.readwindstress).
296     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
297    
298    checkpoint58
299    o add "--embed-source" option to genmake2 which, when the supporting
300      tools can be compiled (as determined by genmake2) will turn on the
301      embed_files package which then embeds the entire MITgcm source code
302      (*.[fFhc] + Makefile) used for the build within the executable
303      - requested by CNH but off by default
304      - adds a paltry <9MB to the mitgcmuv executable in most cases
305      - only writes the output when useEMBEDSRC in eedata is true
306    o clean up 3-dim. relaxation codes:
307      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
308      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
309      * Thanks to Tom Haine for testing!
310    
311    checkpoint57z_post
312    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
313      affects output (@ truncation level) of exp. plume_on_slope ; updated.
314    o fix the pickup behavior for obcs in combination with ptracers
315    o fix a bug in ptracers_external_fields_load
316    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
317      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
318    o transfered surface NH pressure to eta field (if exactConserv).
319    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
320         and update lab_sea output.txt file.
321    o completing 3-dim. relaxation code: additional term
322         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
323      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
324      * At compile time, in "EXF_OPTIONS.h" set
325          #define  ALLOW_CLIMTEMP_RELAXATION
326          #define  ALLOW_CLIMSALT_RELAXATION
327      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
328          tauThetaClimRelax3Dim = 15552000.0,
329          tauSaltClimRelax3Dim  = 15552000.0,
330      * 3 cases:
331          1) Use a constant-in-time 3-dim. field
332          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
333          3) Real-time relax. to time-evolving prescribed field
334    o Adding Laplacian-type smoothness constraint on
335      initial and boundary (forcing) controls (ic, bc)
336      * enable at compile-time via
337        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
338      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
339      * Absolute scale somewhat unclear so far
340      * no area weighting was included since no other cost term does so far
341    
342    checkpoint57y_post
343    First step for a NLFS adjoint
344    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
345    o new init. routines for calc_r_star, calc_surf_dr
346    o still need to deal with ini_masks_etc
347    o testreport seemed happy
348    checkpoint57y_pre
349    
350    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
351    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
352    o add new offset feature to offline pkg (plus minor cleanup)
353    o cfc fixes for final year of integration
354    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
355      be in GCHEM_OPTIONS).
356    
357    checkpoint57x_post
358    o fix testreport Pb in multiple test experiment.
359    o cleanup our namelist syntax in verification:
360      - make it more F95 standards compliant (some work still needed)
361      - allows the vast majority of our tests to work with gfortran
362    o Non-Hydrostatic:
363     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
364     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
365    o Allow to apply AB on T,S rather than on AB(gT,gS):
366     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
367     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
368       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
369     - need a "clever" read_pickup to restart from the other AB formulation
370    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
371    o remove some unused variables (reduces number of compiler warnings)
372    o adjoint
373      * Disable useVariableViscosity for adjoint for time being
374        (there are a number of extensive recomputations)
375      * Initialize certain variables needed for adjoint
376    
377    checkpoint57w_post
378    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
379                 fix the singleCpuIO RS version of MDSWRITEFIELD
380       and add a WARNING if using globalFiles=T with multi-processors.
381    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
382      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
383    o tracer advection scheme:
384      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
385       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
386       was not very convenient).
387      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
388       (further tests needed for the implicit DST & Flux-Limiter schemes).
389    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
390      and sRef for convenience, handy, when you want to initialize
391      ptracers in a large domain with a constant non-zero value. Also,
392      untangle ptracers_init.F a little.
393    
394    checkpoint57v_post
395    o change dome exp. to use variable viscosity in side-drag terms.
396    o remove all the files from the cfc_offline test since they are now
397      incorporated into tutorial_cfc_offline which has been producing
398      identical results for a few days of testing
399    o add new parameter: sideDragFactor to enable half-slip-side BC
400      and change side-drag S/R to use viscosity from mom_calc_visc
401      (can switch back by setting sideDragFactor=0.); affects results at
402      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
403       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
404    o vorticity & strain are now computed without masking, to account for
405      no-slip-side BC in variable viscosity calculation ; mask is applied
406      anyway later on, before computing advection/coriolis terms.
407    o modify exp4 to test new obcs support for reading from external files
408      and for passive tracers
409    o fix behavior of ptracers_monitor when monitor output is written to a
410      netcdf-file; still not independent of monitor.F (writes in the same
411      file).
412    o change default value of tRef (put a uniform, meaningful value for ocean
413      & atmos) and initialize sRef (was missing, as Martin mentioned).
414    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
415      to be proportional to enstrophy dissipation length.  Thus,
416       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
417      This is now consistent with Smagorinsky and with the manual.
418    
419    checkpoint57u_post
420    o OBCS and PTRACERS: add open boundary support for passive tracers
421      - either use homogenous (pseudo) v.Neumann conditions or prescribe
422        OB-values from file; this is not different from the way theta and salinity
423        are treated
424      - however, Orlanski-radiation conditions are not supported, and the model
425        will stop if you use pTracers and Orlanski at the same time.
426      - beefed up the rountine obcs_external_fields_load: now only those open
427        boundary values are overwritten with values from files for which there
428        are really files, otherwise the OB-fields remain untouched. This makes
429        it possible to use different OBs at different ends of the domain (as
430        with EXF)
431    o reduce number of exch calls in shap_filt (s2).
432    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
433      truncation level) 4/5 MLAdjust test results (11&12 digits match).
434    
435    checkpoint57t_post
436    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
437    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
438      same truncation, independent of the face number: affects affects several
439      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
440    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
441      note that biharmonic viscosity + no-slip was not tested in any experiment.
442    o fix bug in non-linear free-surf side-drag ; generate new output for
443      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
444    o make mnc honor the writeBinaryPrec flag for most kinds of output
445    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
446    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
447      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
448    o add brackets in multi-terms sum to get same truncation, independent of
449      the face number (manage to get exactly same value of gU,gV at the cs-edge)
450      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
451    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
452      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
453      a maximum grid-scale Reynolds number.  Also, changes all length calculations
454      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
455      Suggested values of viscosity parameters found in mom_calc_visc.
456      Many new viscosity diagnostics available.
457    
458    checkpoint57s_post
459    o Add clearing-house for viscosity calculations, mom_calc_visc and
460      correct numerous bugs in LeithD and Smagorinsky discretizations.  
461      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
462      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
463      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
464      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
465      The Strain-Tension form is now called with useStrainTensonVisc=.true.
466      ViscAhStrain and viscAhTension are now retired.
467    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
468    o In response to JMC's bug report, genmake2 now ignores any soft-links
469      that it finds in the *current* directory when searching for files.
470      Soft-links found in any other source directories will still work as
471      they did before.
472    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
473      a C routine to unlimit the stack size
474    o mnc-ify pkg/aim snapshot vars
475    o mnc-ify pkg/land as requested by Daniel
476    o various changes to mnc including:
477      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
478      - output can now be grouped so that all files within a group
479          change the ITER portion of their names in lock-step together
480      - can now read ("global") PER-FACE (in addition to PER-TILE) files
481          and works with both EXCH1 and EXCH2 (but needs more testing)
482      - writing works for all verification test cases w/ g77 on Linux
483    
484    checkpoint57r_post
485    o make MNC variable initialization happen earlier
486    o add diagnostics for (almost) each term of the momentum Eq.
487    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
488    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
489    o remove MINIMAL_TAVE_OUTPUT option ;
490      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
491    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
492      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
493    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
494    o add time-dependent SST, SSS control
495    o cost terms in ecco/ modularized (new cost_generic.F)
496    o cost_averages routines are modularized (new cost_averagesgeneric.F)
497    o new infrastructure for seaice model vs. obs misfits in seaice/
498      * driver from the_main_loop.F is seaice_cost_driver.F
499      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
500      * gradient check in Exp. 6a of natl_box_adjoint/
501    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
502      (see README file)
503    
504    checkpoint57q_post
505    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
506    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
507      - bug was reported by Jean-Michel and Ian Fenty
508    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
509      update exp. cpl_aim+ocn output.
510    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
511      Needed for high-res. runs with large global files
512      to be able to limit tapelev size
513    o Changed some tests for adjoint:
514      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
515      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
516      * global_ocean.90x40x15/ back to default 3-level checkpointing
517    o Modifications to enable scripted COMMON to MODULE conversion
518      * verification/OpenAD/code/ has necessary scripts and description;
519      * converts, compiles and runs successfully;
520    
521    checkpoint57p_post
522    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
523    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
524      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
525    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
526    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
527      (was already the case for dissipation with mom_vecinv,
528       and also the case for grad.PhiHyd when staggered-timeStep)
529      This will allow to put dissipation out-off the AB time-stepping.
530     Unfortunately, affects truncation error. Update output of exp. that "fails"
531      (cg2d matching number) and leave the others for later: front_relax(10),
532      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
533      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
534    
535    checkpoint57o_post
536    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
537      (2) its ready to be documented during the 20050801 DocFest
538    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
539      for ideal_2D_oce and lab_sea on linux_ia32_g77
540    o set to #undef CTRL_SET_OLD_MAXCVARS_30
541      in global1x1_tot/code_seaice_adj to access indices 32, 33
542      (worth another tag)
543    
544    checkpoint57n_post
545    o adding precip control xx_precip 32
546    o adding swflux control xx_swflux 33
547    o Replacing 10 forcing penalty cost routines by 1 generic.
548    o Implementing partitioning in time-mean and variable adjustment
549      for atmos. state.
550    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
551    o in natl_box_adjoint:
552      * updated exp 1 to 10
553        (but does not have time-mean vs. variable split results yet)
554    o updated global1x1/*_seaice_adj/
555      to incorporate latest changes
556    o enable useSingleCpuIO for mdsio vector routines
557      (applies in particular to tapelev I/O)
558    o removed inefficient K-loop in all active_file*control*.F
559    
560    checkpoint57m_post
561    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
562      and advect_cs (use EXCH-2 and standard cs-32 grid files).
563    o pkg/exch2: filling of face-corner halo regions is optional
564      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
565    
566    checkpoint57l_post
567     tag before updating tutorials (pre-release-2)
568    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
569       for output and interpolation of input fields onto model grid)
570    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
571       Affects results of exp. rotating_tank ; update output.txt.
572    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
573          and taking the square quantity and/or using a fraction-weight field.
574    o fix aim_diagnostics_init.F mate numbers.
575    o add mnc output capability to diagnostics/diagstat and update
576      our cvsignore files for the ACSII output generated
577    
578    checkpoint57k_post
579    o lab_sea now uses diagnostics package and provides a suite of
580      new EXF diagnostics output.
581    
582    checkpoint57j_post
583    o exf
584      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
585        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
586        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
587      * extended diagnostics output
588        - now includes all EXF variables
589        - hs, hl moved to common block
590        - separate S/R for diagnostics, called after ctrl vector is added
591        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
592        - EXFqnet contains true Qnet (i.e. includes qsw)
593      * updated verif. lab_sea, global_with_exf
594      * Rearranging hflux (exf_mapfields -> exf_getforcing)
595        to ensure that diagnostics sees a true EXFqnet
596    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
597    o diagnostics pkg: change pointers so that 1 diagnostic can be used
598      several times with different frequencies.
599    o mnc-ify the thsice package as requested by Daniel Enderton
600      - the monitor--MNC output needs work
601      - many attributes need to be added (most are currently blank)
602    o mnc-ify theaim_v23 package as requested by Daniel Enderton
603      - many attributes need to be added (most are currently blank)
604    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
605    o add Sadourny like discretization to the 4th.O vorticity advection scheme
606    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
607      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
608         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
609    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
610     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
611    
612    checkpoint57i_post
613    o Diagnostics package was changed: diagnostic allocation is now deactivated
614      by setting an empty file name in the namelist (used to be by setting 0 frequency)
615    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
616      add 1rst Order upwind vertical Shear.
617    o add a quick fix for A/B checkpointing in OFFLINE mode
618    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
619      end-run around the C/Fortran linking horror in eesup/src/timers.F
620    o added pkg/runclock: allows user to terminate run based on wall clock
621    o added non-hydrostatic scaling parameter: nh_am2
622    o pkg/my82: futile attempt to make results compiler-independent by adding
623      some "_d 0", etc. no effect.
624    o for mnc output, fill the 'T' coordinate var with myTime and create a
625      separate 'iter' variable for iteration count
626    o pkg/diagnostics:
627      add new capability: output of Global/Regional & per-level statistics ;
628      tested against monitor output (including land & thSIce) on various exp.
629    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
630    
631    checkpoint57h_done
632      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
633      data.diagnostics, data.gchem, data.ptracers) is done.
634    
635    o pkg/diagnostics: prepare for Global/Regional statistics.
636      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
637    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
638      and rename it: DIFFERENT_MULTIPLE
639    
640    checkpoint57h_post
641    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
642    o pkg/diagnostics: change output frequency, now in seconds (instead
643      of Nb of iterations). This requires to change data.diagnostics.
644    checkpoint57h_pre
645    
646    o in mnc, let the user create the output dir if both mnc_outdir_date
647      and mnc_outdir_num are false
648    o add fflags() to pkg/diagnostics which allows one to specify, on a
649      per-file basis, the file precision [default behavior is unchanged]
650    o added diagnostics to pkg/kpp, including computation of mixed layer
651      depth based on a temperature/density criterion
652    o updated verification/natl_box to test the new pkg/kpp diagnostics
653    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
654    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
655    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
656      not mnc -- this mistake was found by JMC and is now corrected
657    
658    checkpoint57g_post
659    o add Adams-Bashforth 3rd Order time stepping:
660      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
661      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
662    checkpoint57g_pre
663    
664    o make lambda[Theta,Salt]ClimRelax spatially varying
665      (default remains spatially uniform constant based on tau)
666    o added new control variables
667      * init. uVel, vVel, etanN
668      * lambda[Theta,Salt]ClimRelax
669    o separate masks used for ctrl_pack/unpack 'from write_grid' output
670      (suggested by G. Forget)
671    
672    checkpoint57f_post
673    o add parameter "baseTime" = model base time = time at iteration zero
674      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
675      account for baseTime shift
676    o move Coriolis arrays from PARAMS.h to GRID.h
677    checkpoint57f_pre
678    
679    o mnc-ifying the seaice package
680    o introduced an alternative length scale calculation for use in the limiting
681      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
682    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
683    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
684      as well as grad(vort3).  Made it compatible with both approximate form
685      for the cubed sphere and full form of these gradients.  Added flag
686      useFullLeith to select between approximate and full form.  
687    o add "d0" in getcon.F to reduce differences between compilers/platforms
688      update output.txt of exp. fizhi-gridalt-hs
689    o change port_rand funtion to allow to set the seed.
690    o fix obscure MNC bug involving conversion between reals and integers
691      - it caused no problems with certain (eg. gcc, ifc) compilers but the
692        new version is now more standards-compliant
693    o adjoint-related modifications
694      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
695      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
696      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
697    
698    checkpoint57e_post
699    o Adding eddy stress controls a la Ferreira et al.
700    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
701    
702    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
703      update output.txt of exp. fizhi-gridalt-hs
704    o add more "Z" dimensions and associated coordinate vars to MNC
705    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
706    o parameter calendarDumps: when set, approximate months (30-31 days) and years
707      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
708      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
709      months and years.  Requires pkg/cal.
710    o diagnostics: add pickup functionality
711      - off by default for backwards compatibility
712      - current version only uses MDSIO -- MNC will be added
713    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
714    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
715    
716    checkpoint57d_post
717    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
718    o modify verification/ideal_2D_oce so that it tests the creation of mnc
719      output from the diagnostics package
720    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
721    o make genmake2 more portable by using ".$FS" instead of ".f" for more
722      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
723    o add coordinate variables to the MNC output from the diagnostics package
724    o change MNC-flags default value: true when useMNC=TRUE
725    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
726      the ability (off by default) to read the grid information using MNC
727    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
728    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
729    o do snap-shot diagnostics at the middle of the time-interval (instead of
730      at the end).
731    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
732      new test for AIM with thSIce + slab-ocean
733    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
734    o move state variable diagnostics to the beginning of the time step ;
735      (note: still needs some work specially for snap-shot diagnostics)
736      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
737    
738    checkpoint57c_post
739    o Change testing option (-ieee) to get closer agreement between g77 & ifort
740    o generate new output.txt files on faulks with g77 & the new -ieee option
741    checkpoint57c_pre
742    
743    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
744      update output.txt of exp. global_ocean.90x40x15
745    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
746      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
747    o add saltFlux(+File) forcing capability with periodicExternalForcing
748    o allow to use pkg diagnostics for GM-Redi & ThSIce output
749    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
750    o improvements for the MNC output from DIAGNOSTICS:
751      - correct handling of the unlimitied dimension
752      - all dims now have associated coordinate variables
753      - variables located at U, V, and Corner ("Z") points are now written
754        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
755        *all* data points are output
756    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
757    o added pkg/seaice/seaice_monitor.F
758    o mdsio_readfield.F can now read files visible only to master MPI process.
759    o pkg/seaice: some test code for ice-modified ocean stress
760    o exf_getffields interpolation defaults to bilinear for all scalar forcing
761      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
762      spurious negative numbers for precipitation and humidity.  Will cause
763      some small numerical differences for integrations using pkg/exf/exf_interp.F.
764    o pkg/ctrl/
765      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
766        May be enabled via doPackDiag
767      *  introduce z-scaling of
768         + gradient (doZscalePack) and
769         + control (doZscaleUnpack)
770    o pkg/mdsio/
771      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
772      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
773    
774    checkpoint57b_post
775    o simplify options in diagnostics_fill arguments (remove weird combinations)
776    o fix MNC coordinate variables so that they now contain per-face index
777      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
778      general, EXCH2 grids are only aligned to a "local" coordinate system
779    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
780    o Implement instantaneous output within pkg diagnostics:
781      setting a negative frequency in data.diagnostics produces
782     "snap-shot" output (as opposed to time-average if freq > 0)
783    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
784      NOTE: change ptracer diagnostics name: use 2 characters to work with
785            more than 9 tracers. Add also diagnostics of advect & diffus flux.
786    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
787      becomes the coordinate variable for the 'T' dimension
788    o add CF-style coordinate variables to MNC
789      - just a first cut:  numbers are meaningless on the cubesphere and
790        missing along the T axis but otherwise it works!
791    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
792    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
793    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
794      this is based directly on what the model compute, so that the content of
795      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
796    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
797    o clean up build options files for SunOS, in particular
798      - remove -traditional from xmakedepend
799      - change -xarch=v9 to -xarch=native for f77
800      - restore use of make (not gmake)
801      - add CC=gcc if using g77
802    o changes per discussion of AM, JMC, & EH3 today:
803      - move redundant "grid" variables out of "state" -- in preparation of
804        creating proper CF-style coordinate variables and in recognition
805        that any/all grid variables can be easily copied (eg. w/NCO) from
806        the grid files into any of the other NetCDF files
807      - *always* output grid variables with MDSIO (this will eventually be
808        changed)
809      - output MNC grid file if useMNC is true
810    o every instance of _END_MASTER() has been found and replaced with
811      _END_MASTER( myThid ) in order to satisfy certain picky Sun
812      preprocessors
813    o re-arrange diagnostics pkg initialisation:
814     - allow each package to extend the available diagnostics list
815     - add some checking and fix small problems (multi-threaded, ...)
816     - new S/R diagnostics_fill (replace fill_diagnostics):
817       look through the short list of active diag. (instead of the long list)
818       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
819    
820    checkpoint57a_post
821    o this set of changes restores TAMC compatibility
822      tested for global_ocean.90x40x15 adjoint on trough
823      (what a pain)
824    
825    checkpoint57a_pre
826    o some modifs in tools/build_options for sunos
827    o call ctrl_pack for ctrl at end for optimcycle=0
828    
829    checkpoint57
830    o add horizontal bi-harmonic viscosity for vertical velocity
831      - new parameter viscA4W (defaults to viscA4)
832      - affects only non-hydrostatic code
833      - to be done: no-slip lateral boundary conditions
834    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
835    o implement Implicit Vertical advection for pTracers
836    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
837      (implemented also for implicit vertical diffusion & advection)
838    o OBCS: extend application of tracer open boundary conditions
839      to a strip beyond the boundary of width Olx/Oly
840    o add call monitor to TAF set of required calls (flow directives)
841      and include in natl_box_adjoint
842    o untangle a few ifdefs related to cost, ctrl, autodiff
843      untangel a few ALLOW_ECCO_OPTIMIZATION
844    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
845      (theta2, salt2 in ecco_cost_weights)
846    
847    checkpoint56c_post
848    o OBCS as control variables
849      - update ctrl_ad_diff.list, obcs_ad_diff.list
850      - remove balance of obcs controls from default
851      - fix index bug nobcs in ctrl_init
852      - fix dummy fields filen in ctrl_pack
853      - add dummy weights for obcs
854    o lsopt: comment out fort.94 output
855    o optim:
856      - remove unnecessary header files
857      - adjusted namelists
858      - add xerbla.F to Makefile
859    o exf:
860      - multiple modifications of exf_check_range
861      - unit change in exf_init_runoff from [m/year] to [m/s]
862    o mdsio:
863      - i/o-vector change debugLevel from debLevA to debLevB
864    
865    checkpoint56b_post
866    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
867      is called from DO_THE_MODEL_IO
868      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
869      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
870      - clean up PTRACERS_WRITE_TIMEAVE a little
871    o add another verification experiment that tests both the cfc-pkg and
872      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
873      reactive tendencies treated inline with regular timestepping
874    o testreport previously did a lousy job of comparing small numbers, so
875      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
876      implemented in the little c-progam tmp_cmpnum.c which is embedded in
877      testreport.
878    o ptracers_monitor: bug fix for MPI
879    
880    checkpoint56a_post
881    o GCHEM: finish reorganizating the package
882      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
883        (introduces another 3D-array for each passive tracer, but only if
884        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
885        gchemTendency is not needed because the timestep is done separately)
886      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
887      - GCHEM is now---more or less cleanly---separate from PTRACERS
888      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
889        so clear to me how that should be done in a general way.
890    o CFC: improve formatting of output in CFC_ATMOS
891    o PTRACERS:
892      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
893        that ALL experiments with ptracers enable can be checked. This makes
894        GCHEM_MONITOR obsolete.
895      - include a runtime parameter PTRACERS_monitorFreq that defaults to
896        monitorFreq
897      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
898    o add PTRACERS (PTR0[1-5]) to testreport output
899    o exf_check_range:
900      * default changed to .TRUE.
901      * will check values for niter0 if debLevA, every timestep if debLevB
902      * STOP in exf_check_range if 'out of range'
903      * range chosen generous to allow for potential extema
904      TBD: a version with stricter range
905           permitted range would be runtime parameters
906    o GMredi:
907      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
908      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
909      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
910    o GCHEM:
911      - move call to GCHEM_FORCING_SEP, so that it is now called before
912        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
913      - introduced a useGCHEM runtime flag and applied it everywhere.
914      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
915        this flag is now only visible within GCHEM-pkg routines.
916      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
917        be replaced by a 3D array that is computed before thermodynamics; for
918        this, the tracer ID iTracer had to be included into the parameter list
919        of ptracers_forcing
920      - set up forward_step to call gchem_forcing, that will replace
921        gchem_forcing_int in ptracers_forcing
922      - cleaning up
923    o small cleaning of exch2: remove files that are also in eesupp/src
924    
925    checkpoint56
926    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
927    o mnc: cleanup "full" files--fixes out-of-memory problem
928    o ECCO-GODAE
929      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
930      * fully merged and updated from SIO code
931        windstress sign change affects
932        - exf_inscal_[u/v]stress
933        - sign of xx_tau[u/v] adjustments
934        - signs in cost_scat
935      * ctrl_get_gen: avoid update of tau[u/v] for first few days
936      * natl_box_adjoint updated and compressed
937      * 2-level checkpoint switch added
938        (tested in EXP. 1 of natl_box_adjoint)
939      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
940    o SVD
941      * first complete, non-hacked version for SVD calculations
942      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
943        performed via direct access files admtlm_vector.it????
944        (via ctrl_[un]pack)
945      * optimcycle is used for ARPACK iteration counter
946        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
947      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
948        and add linear transforms where necessary
949      * controls are initial/final SST, SSS (can be extended; need to check
950        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
951    o mdsio: filename info to both stderr, stdout
952    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
953      from sign change
954    
955    checkpoint55j_post
956    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
957      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
958    o add consistent build directories and .cvsignore files to verification
959    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
960    o make all subroutines 30 or less characters in length for certain older
961      compilers to work (a thorough search only turns up two routines in
962      pkg/ptracers)
963    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
964      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
965    
966    checkpoint55i_post
967    o change arrays for total vertical diffusivity (2.D if explicit,
968      3.D if implicit) ; each ptracer uses its own background value.
969    o added mnc/NetCDF output capability to ocn_compon_interf
970      - added bits to verification/cpl_aim+ocn so that it can run on
971        ITRDA and other clusters without the mpirun "-wd" option
972    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
973      configuration
974    o give MNC the ability to create additional files rather than
975      exceeding a specified file size limit "MNC_MAX_FILESIZE"
976      - the default is just less than 2GB which is a practical limit
977        on many systems
978    o Compute the non-local term using either KPP vertical diffusivity (=default)
979       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
980    
981    checkpoint55h_post
982    o add verification test "vermix"
983    o remove all the *_ioinc flags and replace with the single global
984      outputTypesInclusive flag
985    o allow to set a vertical profile of vertical diffusivity for T & S
986    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
987    o useMNC moved from data.mnc to data.pkg
988    
989    checkpoint55g_post
990    o Renaming carbon AD experiments to comply with testreport conventions
991    o Updating adjoint of Held-Suarez hs94.1x64x5
992    o Fixing directives for non-ECCO forward_step, after ECCO directives
993      have been fixed to avoid recomp. of do_oceanic_phys
994      Works well for global_ocean.90x40x15,
995      but recomp. issue remains for carbon
996    o Updating adjoint output for natl_box_adjoint after
997      pkg/ecco has been modified (see taga c55d_post)
998    
999    checkpoint55f_post
1000    o rename to timeave_init_fixed
1001    
1002    checkpoint55e_post
1003    o some delicate re-shuffle of store directives to avoid one
1004      extra call of do_oceanic_physics
1005      affects ecco_the_main_loop.F, do_oceanic_physics.F
1006      checkpoint_lev1_directives.h
1007    o NB: this may break global_ocean adjoint temporarily,
1008      but it is clear how to fix it. Will do later, need this now.
1009    
1010    checkpoint55d_post
1011    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1012    o ecco_cost_weights is modified to 1x1 runs
1013    o modifs to allow observations to be read in as
1014      single file or yearly files
1015    o enable to read exf forcing fields as either
1016      single file or yearly files (flag useExfYearlyFields)
1017    checkpoint55d_pre
1018    
1019    o switch between 2-level and 3-level checkpointing
1020    o add ability of MNC to write local and "partial" (eg. 2D slices where
1021      the full 3D field is never actually stored) arrays to NetCDF files
1022      with the correct (that is, the complete multi-dimensional) set of
1023      array indicies
1024      - used in mom_vecinv() to write the diagFreq output
1025      - tested (demonstrated) in verification/aim.5l_cs
1026    o further mnc-ification
1027      - add verification/lab_sea to the list with mnc setups
1028      - fix undefined mnc v-names in cd_code
1029      - add kpp to mnc output (both snapshot and timeave)
1030    o non-hydrostatic code
1031      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1032        in calc_gw.F
1033      - defaults to viscAh
1034      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1035        friction or Leith) in non-hydrostatic mode, as long as there is
1036        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1037    o pkg/cost
1038      extend simple cost functions to treat time mean quantities
1039      (T,U,V) via cost_accumulate_state from cost_tile
1040    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1041        be 2 times larger than the minimum size the advection scheme requires.
1042        now get a perfect conservation of salt in advect_cs test-exp (updated)
1043    o GGL90 (Gaspar's TKE mixed layer)
1044      - add horizontal diffusion of TKE, requires exchanges in
1045        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1046        default. In OPA there is no horizontal diffusion of TKE but the
1047        mixing coefficients are computed from a horizontal average of TKE of
1048        6 points or so. I think that diffusion has a little more physical
1049        justification.
1050      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1051        was in vain)
1052      - mask tke-variable in ggl90_init
1053    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1054    o fix biharmonic diffusion on CS-grid.
1055    o more obcs stuff
1056      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1057        for reading boundary values. This routine is called from
1058        obcs_prescribe_read
1059      - updated obcs_check
1060      - changed sponge layer relaxation parameter units for days to seconds
1061      - turned off sponge layer by default
1062      - changed argument list of OBCS_CALC to myTime+deltaTclock
1063      - fixed about 35 bugs in obcs_external_fields_load
1064    
1065    checkpoint55c_post
1066    o obcs stuff
1067      - new runtime flags useOBCSprescribe, useOBCSbalance
1068      - re-arranged obcs_calc
1069      - moved exf_getobcs to obcs_prescibe_read
1070        obcs_prescibe_read is called after ORLANSKI stuff
1071        and independent of it (executable can contain all).
1072      - updated obcs_check
1073      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1074        These may be necessary only if tangential velocities are
1075        prescribed at OB, not sure, needs testing.
1076    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1077      which simplifies the calls and passes the ifc check-bounds test
1078    
1079    checkpoint55b_post
1080    o add a 2D scalar, Z location, exchange_2 routine.
1081    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1082      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1083      affects advect_cs results (for the wrong reason): update output.txt
1084    o use a more standard discretization for biharmonic viscosity ;
1085     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1086      affects results of dome set-up: update output.txt
1087    o fix gad_advection.F (CubedSphere part), back to version 1.23
1088    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1089    
1090    checkpoint55a_post
1091    o merged code to
1092      * prescribe/read time-dependent open boundaries
1093        (works in conjunction with exf, cal)
1094      * sponge layer code for open boundaries
1095      * each boundary N/S/E/W now has its own CPP option
1096        (healthy for the adjoint)
1097    
1098    checkpoint55
1099    o up-to-date adjoint of previous breaks
1100      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1101      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1102      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1103      - carbon: * remove tr1-related adjoint verification
1104                * add ptracer as control variable
1105    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1106      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1107    
1108    checkpoint54f_post
1109    o in verification/carbin/ remove experiment related to
1110      ALLOW_PASSIVE_TRACER (array tr1 etc)
1111      code_ad/ input_ad/ results_ad
1112    
1113    o add two new packages
1114      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1115        + subject to optimization (memory)
1116      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1117        + subject to reordering (many GOTOs in the original code)
1118        + so far opps is called for every (i,j) point, and then operates in
1119          the vertical; one may want to reorder the scheme in order operate in
1120          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1121          fields)
1122    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1123      - all verification tests compile and run with linux_ia32_g77
1124      - defaults are compatible with current input files--nothing
1125        should change if you were not previously using MNC
1126      - MNC output has been added in numerous places (eg. timeave)
1127        but there are still a few writes not yet do-able with MNC
1128        (this is in progress)
1129      - flags now allow for either/or/both use of MDSIO and MNC and
1130        documentation will soon follow
1131      - numerous small formatting cleanups for ProTeX
1132    o add version info (via BUILD_INFO.h) to MNC and stdout
1133    
1134    checkpoint54e_post
1135    o add two new packages
1136      - pp81 (Packanowski and Philander, 1981), Richardson number and
1137        stratification dependent mixing
1138      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1139      - these scheme operate in a similar manner as KPP (without ghat, of
1140        course), however there is only one diffusivity that is used for both
1141        temperature and salinity (and passive tracers)ç
1142    o add offline package
1143    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1144      provided by Stephanie Dutkiewicz
1145    o genmake2: add ability to search for C compilers and cleanup test output
1146      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1147    
1148    checkpoint54d_post
1149    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1150    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1151      leading to additional shift by 5 days each year of integration
1152       (i.e. leading to considerable offset over the years)
1153    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1154    o start with no AB and no initial filtering (staggerTimeStep):
1155      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1156    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1157      (external loading & cpl import/export stay in forward_step.F)
1158    o update coupling interface to work with new staggerTimeStep
1159    o change MDSIO ptracers_pickup.
1160    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1161    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1162    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1163    
1164    checkpoint54c_post
1165    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1166      this affects (truncation error) output.txt of test-exp:
1167       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1168    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1169    o change Qnet to always be the net heat flux, (+upward).
1170      affects (truncation error) output of natl_box exp.: updated
1171    o define the max number of passive tracers in PTRACERS_SIZE.h
1172    o start to test mnc routinely in exp0
1173    o add sea-ice loading (sIceLoad) as a new forcing field.
1174    
1175    checkpoint54b_post
1176    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1177       impressive on Altix and Opteron systems)
1178    o diagnostics can now write NetCDF files through the mnc package
1179    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1180    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1181    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1182      affects (truncation error) output of lab_sea & natl_box exp.: updated
1183    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1184    
1185    checkpoint54a_post
1186    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1187    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1188    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1189    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1190      + internal_wave (shift in writing cg2d_ini_res)
1191    checkpoint54a_pre
1192    
1193    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1194      - modified verification/lab_sea and natl_box_adjoint accordingly
1195    
1196    checkpoint54
1197    checkpoint53g_post
1198    o prepare splitting of thermodynamics: store convect.counter in common block
1199    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1200      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1201    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1202    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1203    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1204    o restore adjointability
1205    
1206    checkpoint53f_post
1207    o modifications that affect AIM experiment results (update output.txt):
1208      - no advection of S at top interface Nr (pkg/generic_advdiff)
1209      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1210    o AIM pkg:
1211      - include stability function into surf.Flux derivative relative to Tsurf
1212      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1213    
1214    checkpoint53e_post
1215    o merged cylindrical coord configuration
1216    o added rotating_tank experiment
1217    checkpoint53e_pre
1218    
1219    checkpoint53d_post
1220    o faulks upgraded: re-generate output.txt that have changed:
1221       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1222    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1223    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1224    o added Sadourny discretization of Coriolis
1225      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1226      - re-enabled use of omega3 (useAbsVorticity)
1227    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1228      vector-invariant equations
1229      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1230    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1231      hopefully without new bugs
1232      - still to do: biharmonic friction for non-hydrostatic w
1233    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1234    o regenerated output for global_ocean_ebm (using -ieee)
1235    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1236      of mom_common/
1237      - simple re-arrangement of instructions within computing loop
1238    checkpoint53d_pre
1239    
1240    checkpoint53c_post
1241    o new version of coupler for AIM+thSIce and Ocean models
1242     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1243     - land: change Evaporation of snow
1244     - aim with thSIce: fix bug in snow-precip.
1245    o changes to calc_gw.F
1246     - bug fix for w^2 term near the bottom boundary
1247     - (hopefully) improve the lateral slip boundary condtions for use with
1248        partial/looped cells
1249      - because the bug fix changes two verification experiments anyway (exp5
1250        and plume on slope), change the lateral boundary condition from half slip
1251        to the value of no_slip_sides
1252    o ebm package wasnt quite up to the parallel task. Fixed that.
1253    o Adjoint of EBM package + verification
1254      * TLM OK
1255      * ADM not sufficient accuracy yet (needs further testing)
1256    
1257    checkpoint53b_post
1258    o Commiting new energy balance model to repository
1259      * package is pkg/ebm
1260      * verif. is verification/global_ocean_ebm
1261      * references are in ebm_driver.F
1262    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1263    C        Global thermohaline circulation. Part I:
1264    C        Sensitivity to atmospheric moisture transport.
1265    C        J. Climate 12(1), 71-82
1266    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1267    C        Global thermohaline circulation. Part II:
1268    C        Sensitivity with interactive transport.
1269    C        J. Climate 12(1), 83-91
1270    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1271    C        Destabilization of the thermohaline circulation
1272    C        by atmospheric eddy transports.
1273    C        J. Climate 7(12), 1870-1882
1274    o Will need long integration testing.
1275    checkpoint53b_pre
1276    
1277    o created pkg/mom_common in preparation for variable viscosity code
1278    o renamed and split ini_mnc_io
1279    o pkg/land: only liquid water can diffuse or run-off
1280    o AIM using land: soil wetness availability account for snow
1281    o added printMapIncludesZeros to EEPARMS namelist
1282    
1283    checkpoint53a_post
1284    o restore TAMC compatiility for exf_constants.h
1285      (no usage of _d in .h)
1286    o Additional storing in KPP in an attempt to fix
1287      TAMC problem with adjoint of KPP code.
1288      (no success...)
1289      Identical code works fine with TAF.
1290    o Fixed verification/natl_box_adjoint experiments.
1291      Initial conditions for Experiments 4 and 5 are now
1292      set to "SEAICE_initialHEFF=0", which is more reasonable,
1293      and hence gives results closer to that of Experiment 2.
1294      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1295    
1296    checkpoint53
1297    o stable checkpoint with up to date adjoint
1298      TLM tests only run for 1st grdchk at the moment. Its unclear if
1299      this is a code problem or a problem with resetting code for g_
1300      variables that is being autogenerated wrong.
1301      Otherwise:
1302       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1303       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1304         are both still in chaos following their security messes.
1305    
1306    checkpoint52n_post
1307    o various build (mostly genmake2) changes including:
1308      - ability to build/run more easily within Cygwin and MacOS X
1309      - more complicated Makefiles with a stronger dependence on Gnu Make
1310    o pkg/seaice modifications
1311      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1312        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1313        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1314      - changed proxy for geostrophic velocity and updated
1315        verification/lab_sea/results/* accordingly
1316      - removed ADI dynamic solver from pkg/seaice
1317      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1318        they caused a segmentation fault under certain circumstances
1319      - removed unused field WATR
1320    o bug fix in exf-package:
1321      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1322         now reflect that.
1323    o small fixes in the cal-package:
1324      - set reference date to first of January for the 'model'-calendar
1325      - failing of cal_CheckDate in cal_FullDate now actually results in a
1326        warning
1327    o small modifications in exf-package to increase flexibility:
1328      - change climtempfreeze from a constant to a runtime parameter that
1329        is specified in data.exf_clim (default = -1.9)
1330      - introduce runtime parameter windstressmax (default = 2.0) that is
1331        specified in data.exf
1332    o fix in pkg/thsice:
1333      - update Evap (Tsf changes) to be consistent with Latent heat flux
1334      - maintain snow precipitation unchanged (even if Tsf >=0).
1335     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1336    
1337    checkpoint52m_post
1338    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1339      this does not change any of the results, because myIter=0 in swfrac always
1340      lead to jwtype=2 (the default anyway), but the call makes little sense
1341      as a default
1342    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1343    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1344      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1345    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1346    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1347    o extending useSingleCpuIO option to work with new exch2 I/O format
1348      - old-style, missing-tile I/O is still accessible by defining CPP
1349        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1350    o monitor package can write to NetCDF files and/or STDOUT
1351    o fix re-definition bug in MNC_GRID_INIT_ALL()
1352    o doc/api_reference added
1353      - a framework for building an API Reference Manual using all
1354        the "protex" comments embedded in the code
1355      - see pkg/generic_advdiff, pkg/mnc for examples
1356    o MNC:
1357      - make myThid the last argument for all subroutines
1358      - new default for the grid files: NO halos
1359      - add useMNC and other run-time flags
1360      - separate per-file-group handling of the unlimited dimension
1361      - early initialization of MNC w/ flags read at the eeboot stage
1362        and lookup tables set in initialize_fixed
1363      - write all MNC output to a freshly-created directory
1364    o thermodynamics sea-ice (thsice) is now tested with testreport.
1365    o test exp. advect_cs: use the standard cs32 grid ; update output.
1366    o Added functionality to grdchk:
1367      pick global i,j,k position (or nearest wet) where to perform check.
1368    
1369    checkpoint52l_post
1370    o new land formulation:
1371      a) use ground enthalpy as prognostic variable to ensure exact
1372         energy conservation.
1373      b) account for water temperature and for latent heat of freezing
1374         in all processes (rain, run-off, ground storage)
1375      c) compute surface and ground temperature implicitly.
1376    o aim_v23 modification for new land model:
1377      a) Treat separately land / ocean / sea-ice surface fluxes
1378         to allow implicit computation of land & sea-ice surface temp.
1379      b) add snow precipitation.
1380    checkpoint52l_pre
1381    
1382    o fix problem (when 1 tile is empty) in min/max monitor.
1383    o fix bug in timeAve (u,vZetatave in common block)
1384    o no restoring terms under ice for pkg/seaice
1385    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1386    o bug fix for pkg/seaice pickups
1387    o change MNC call locations and add coordinate attributes
1388    o mask vorticity at the corner ; affects global_ocean.cs output
1389    o fix ini_curvilinear_grid ; test CS experiments with mpi
1390    o aim.5l_cs: modify sea-ice fraction input file ; update output
1391    o exf: Adding simple range check routine for exf fields after read
1392    
1393    checkpoint52k_post
1394    o removed top-level directory "diags"
1395      - we migrated these functions to pkg/timeave a long time ago
1396    o fixed bug introduced in pkg/monitor
1397    o accuracy ctrlprec = 32 insuffient for gradient checks using
1398      averaged fields (I/O via cost_averages)
1399      -> use ctrl.h in active_file*.F to control I/O precision.
1400    o paramter list of CALL ADTHE_MAIN_LOOP
1401    o added initial do_the_model_io to ecco
1402    o set all ...Freq to zero after cost_final
1403      taveFreq, dumpFreq, pChkptFreq
1404    o MAIN and ECCO differentiability restored
1405    
1406    checkpoint52j_post
1407    o fix nchklev in tamc.h for global_ocean...
1408    o Bringing flow and store directives up-to-date
1409    o Really weird thing!
1410      call do_the_model_io from the_main_loop with parameters
1411      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1412      TAF places a faulty re-call of initialise_varia
1413      after cost_final call which should not be there!
1414    checkpoint52j_pre
1415    
1416    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1417      error messages
1418    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1419    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1420      debug output
1421    o modfied mdsio_writefield.F to handle non-global files under exch2
1422    o update AIM Cubed-Sphere exp (aim.5l_cs):
1423      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1424    o update AIM Equatorial Channel exp:
1425      use standard aim_v23 pkg and change the SST fields to be more realistic.
1426    o globalFile now works with exch2
1427    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1428      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1429    o limit timeave output for hi-res integrations
1430    
1431    checkpoint52i_post
1432    o removed CPP_EEOPTIONS.h from verification/*/code
1433    o updated the tiling for global_ocean_pressure
1434    checkpoint52i_pre
1435    
1436    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1437      the old pkg/aim).
1438    
1439    checkpoint52h_pre
1440    o shortened offending lines in exch2_send_rx?.template
1441    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1442    o genmake2: add build & execute test for NetCDF code
1443    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1444      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1445    o added useSingleCPUIO flag to monitor.F and mon_out.F
1446    o added temporary hack for sea-ice dynamics on the cube:
1447      metric terms are ignored and it is assumed that
1448      there is no sea-ice on cube faces 1, 2, 4, and 5.
1449    
1450    checkpoint52f_post
1451    o added exch2 cube routines to pkg/exch2
1452    o modified hs94.cs-32x32x5 to use it
1453    o added new grid files to hs94.cs-32x32x5
1454    checkpoint52f_pre
1455    
1456    checkpoint52e_post
1457    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1458      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1459    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1460      to work with implicit vertical advection and AB ;
1461    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1462    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1463     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1464    checkpoint52e_pre
1465    
1466    o fix bug in impldiff when Nr=1 or Nr=2.
1467    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1468    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1469    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1470      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1471    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1472    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1473    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1474    
1475    checkpoint52d_post
1476    o re-tiled many expts to allow comparison in multi-processor mode
1477      - updated output accordingly
1478      - changed hs94.128x64x5 to use intial T from file rather than use the
1479        random number generator
1480    o add infrastructure in model routines for fizhi and gridalt packages
1481    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1482    o changes to permit hi-res, cubed-sphere, configuration
1483      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1484      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1485      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1486        of surface winds for the cube
1487      (A verification experiment, based on global_ocean.cs32x15, but with
1488       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1489       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1490       complete with example surface forcing files and matlab scripts to look
1491       at the output and compare it with that of global_ocean.cs32x15.)
1492    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1493       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1494       to conform to the common rule.
1495    o check-in the first version of the coupler + interfaces for multi-components
1496       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1497       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1498       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1499       - ocean and atmos. share the same horizontal grid (no interpolation).
1500       - exchanges between component and coupler is done in forward_step
1501    o new verification experiment, cpl_aim+ocn:
1502       coupled ocean - AIM atmosphere on cs32 grid.
1503    
1504    checkpoint52d_pre
1505    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1506    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1507    
1508    checkpoint52c_post
1509    o Fixing OPTIONS files for use of exf:
1510      - ALLOW_ECCO not needed
1511      - ECCO_CPPOPTIONS.h should not be included from
1512        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1513        as has been the case in the past
1514      - All cal/exf related options are currently set in
1515        single header file. Should remain so until we
1516        agree on a consistent new policy.
1517    o Removed all CPP options for cal package.
1518      cal has no more CPP options.
1519    o modified STOREs in GAD_ADVECTION
1520    o corrected key comp. for passkey
1521    
1522    checkpoint52b_post
1523    o new version: "thsice" of thermodynamic sea-ice pkg:
1524     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1525     - modify fluxes but do not change theta directly;
1526     - light cleaning of bulk_force pkg (still needed with thsice).
1527     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1528       + output_thsice.txt to test thsice & bulk_force pkgs.
1529    o put back grid & coriolis monitor output.
1530    checkpoint52b_pre
1531    
1532    o call "do_the_model_io" at the beginning (=> dump initial state)
1533    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1534    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1535      (need info on NUMBER_OF_PTRACERS)
1536    o missing PTRACERS headers in some routines
1537    o default tamc.h in pkg/autodiff supposed to crash
1538      to ensure proper customization
1539    
1540    checkpoint52a_post
1541    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1542      - moved surfaceTendencyTice from pkg/seaice to main code
1543      - subroutine FREEZE_SURFACE now limits only surface temperature
1544        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1545        => new output.txt for global_ocean.cs32x15 & global_with_exf
1546      - keep the old version of FREEZE for backward compatibility;
1547        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1548      - corresponding modifs for TAF directives
1549    o added surface flux output variables to TIMEAVE_STATVARS
1550    o time-averaged output for pkg/ptracers
1551    o fix problem with ECCO-related divided adjoint
1552      snapshot file was missing some ad-variables,
1553      but no warning issued by TAF
1554    
1555    checkpoint52a_pre
1556    o some bug fixes for #undef REAL4_IS_SLOW
1557    
1558    checkpoint52 = ecco_c52_e35
1559    o after testing adjoints of checkpoint51u_post
1560    
1561    checkpoint51u_post
1562    o this is the post-merge tag of the ecco-branch
1563      (needs another clean checkout and re-testing)
1564    o various natl_box_adjoint configs and results
1565      but no input fields
1566    o obcs adjoint not yet merged!
1567    o adding ECCO global 1x1 and 2x2 degree configs
1568    o updated/extended some store directives for seaice
1569    o pkg/ecco now containes ecco-specific part of cost function
1570    o top level routines the_main_loop, forward_step
1571      supersede those in model/src/
1572      previous input data.cost now in data.ecco
1573      (new namelist ecco_cost_nml)
1574    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1575    
1576    checkpoint51t_post
1577    o this is the pre-merge tag of the ecco-branch
1578    
1579    checkpoint51s_post
1580    o cleanup: removed various obsolete #define-s
1581    o pkg/grdchk
1582      - renamed 'ph-grd 3' to 'grad-res'
1583      - merged from ecco-branch
1584        (remaining bug fixes for obcs gradient checks)
1585      - additional high-precision output for testreport
1586        (grep for 'precision_grdchk_result')
1587    
1588    checkpoint51r_post
1589    o cleaned up or removed CPP_OPTIONS.h files
1590    o updated results for some of the tests to reflect the new
1591      optfiles (-ieee: -O0 instead of -O3)
1592    
1593    checkpoint51q_post
1594    o cd_code:
1595      - moved cd_scheme.F -> cd_code_scheme.F
1596      - separate read_checkpoint from cd_code_ini_vars.F
1597      - separated cd_code part from write_checkpoint
1598      - updated AD_SOURCE, generated .flow
1599      - added CD_CODE_VARS.h to the_main_loop
1600      - Moving cd_code specific store dir.s to pkg/cd_code
1601    o ctrl package totally restructured
1602      - pack/unpack now optional and decoupled from
1603        xx_/adxx_ I/O
1604      - ctrl_pack/unpack cleaned
1605        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1606      - confined inclusion of AD_CONFIG.h to where necessary.
1607    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1608    
1609    checkpoint51p_post
1610    o create initial cd_code package
1611      - WARNING: the initialization of fields within packages
1612        is broken because INI_FIELDS (where READ_CHECKPOINT is
1613        called) is called *before* PACKAGES_INIT_VARIABLES.
1614        This seems to be backwards since
1615        1) its important to initially zero the entire field including
1616           the "halo" region
1617        2) zeroing needs to be done *before* reading pickup info
1618           and the pickup call might or might not happen in any
1619           particular run
1620      - this needs an overhaul for R2
1621    o cleanup verification/*/code/GMREDI_OPTIONS.h
1622    o cleanup testreport
1623    
1624    checkpoint51o_post
1625    o bringing AD-related verif's up to date with genmake2
1626      - carbon/
1627      - global_ocean.90x40x15/
1628      - hs.94.1x64x5/
1629      - (front_relax/ )
1630    o (more) consistent directory structure for AD-related verif.'s
1631    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1632    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1633    o bug fix in find_alpha.F for MDJWF:
1634      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1635        change rho -> rho-rhoConst
1636      - replace call find_rho to find_rhonum
1637    o initialisation of rFlx extended to full array (required by TAF)
1638      and shifted to thermodynamics
1639    o removed PTRACERS.h in ptracers routine
1640    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1641    o Correcting initialisations for fVerU, fVerV.
1642    o helping TAF to recognize dependency on kUp for
1643      fVerU, fVerV
1644    o Replacing delZ by delR in pkg/ctrl/
1645    checkpoint51o_pre
1646    
1647    o undid all of cp51 pending some cleanups and discussion
1648    o added the [#include "AD_CONFIG.h"] statement to all files that need
1649       it for adjoint/tl #defines
1650     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1651     o removed tools/genmake since it no longer works
1652    
1653    checkpoint51n_post
1654    o modifications to make FREEZE flux visible to pkg/kpp
1655      - moved surfaceTendencyTice from pkg/seaice to main code
1656      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1657      - subroutine FREEZE now limits only surface temperature
1658        (this means new output.txt for global_ocean.90x40x15,
1659         global_ocean.cs32x15, and global_with_exf)
1660    o added surface flux output variables to TIMEAVE_STATVARS
1661    
1662    checkpoint51n_pre
1663    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1664    o added [#include "AD_CONFIG.h"] to all files that use the following
1665      defines:
1666      - ALLOW_ADJOINT_RUN
1667      - ALLOW_TANGENTLINEAR_RUN
1668      - ALLOW_ECCO_OPTIMIZATION
1669    
1670    checkpoint51m_post
1671    o incorporating changes to get TAMC/TAF working in genmake2
1672      - added new TAMC/TAF targets to the Makefile
1673      - various cleanups related to package handling
1674      - these changes should have no impact on the forward model
1675    
1676    checkpoint51l_post
1677    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1678     - faster algorithm for cal_addtime.F
1679     - higher precision arithmetic, where needed
1680     - pkg/exf *startdate variables changed from calendar date to
1681       model integration time
1682    
1683    checkpoint51l_pre
1684    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1685    o enable to apply restoring on S & T only in a latitude band.
1686    o update output (external_forcing_surf modif. change truncation errors)
1687       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1688    
1689    checkpoint51k_post
1690    o change default to: useNHMTerms=.FALSE.
1691     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1692       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1693     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1694        exp1, ideal_2D_oce
1695     - change data file of oceanic exp (leave the results unchanged for now)
1696       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1697    o set gravitySign automatically according to the vertical coordinate used
1698      (and change sign: back to "logical" value: +1 when R increases downward)
1699    o added an include barrier to the default CPP_OPTIONS.h and
1700      removed the #include "PACKAGES_CONFIG.h" from it
1701    o fix a bug in mom_fluxform (from chk51j_post)
1702    
1703    checkpoint51j_post
1704    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1705    o adjusted some flow directives (dynamics, thermodynamics)
1706    o added cubed-sphere case to test cost function
1707    o heckpoint_lev?_directives.h now include
1708      pkg-specific directives, whenever those are enabled.
1709    o Moving pkg-specific flow directives to corresponding pkg
1710      Moving pkg-specific differentiation list to corresponding pkg
1711      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1712      ---> conventions are
1713           - pkg_ad.flow
1714           - pkg_ad_diff.list
1715           - pkg_ad_check_lev?_dir.h
1716    
1717    checkpoint51i_post
1718    o merge of the branch-genmake2
1719      - knowingly breaks the older genmake
1720      - automatic generation of all ALLOW_${PKG_NAME} defines
1721      - new testreport supersedes older testscript
1722    o large number of package inclusion and header cleanups
1723    checkpoint51i_pre
1724    
1725    o new output for adjoin of global ocean vector invariant
1726    o fix for checkpoint of thermodynamic seaice and bulk_force
1727    o Steph gchem various cleanups
1728    
1729    checkpoint 51h_pre
1730    o fixed some single quotes
1731    o modify gchem pkg to be more versatile
1732    o modifications to clean up dic pkg
1733    o add pkg/cfc
1734    
1735    checkpoint51g_post
1736    o provide links for ARPACK and ADM*TLM
1737    o start removing verification/vero/
1738    o update AD-related stuff
1739      (in particular some IF-statements in model/src/ routines)
1740    o adding to verification/global_ocean.90x40x15/ adjoint of
1741      vector invariant setup
1742    
1743    checkpoint51f_post
1744    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1745    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1746      of tracer Green's fucntions for ocean inversion project.
1747    
1748    checkpoint51f_pre
1749    o Added on-the-fly spatial interpolation capability
1750        "USE_EXF_INTERPOLATION" to pkg/exf.
1751      - This is a temporary Cartesian-grid hack until
1752        the super-duper ESMF coupler becomes available.
1753      - See verification/global_with_exf/README for usage example.
1754      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1755        flags and modified pkg/seaice accordingly.
1756    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1757        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1758        non-local transport term.
1759    
1760    checkpoint51e_post
1761    o pkg/mom_vecinv:
1762      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1763      - add time-ave diagnostic of vorticity advection.
1764    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1765    o atmospheric geopotential: - include water vapor effect;
1766                                - use p^kappa in p* scaling.
1767    o land pkg: read initial state from files.
1768    o AIM : add stratospheric drag in the upper level
1769    
1770    checkpoint51d_post
1771    o change function ILNBLNK (=> last non-blank char.) to return zero
1772      (instead of the string length) when the string. char is empty
1773    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1774    o modif's to restore TAMC compatibility
1775      - avoid "_d" constructs in PARAMETER declarations
1776      - avoid interrupting lines by comment lines
1777    o Use cluster local disks for purely local I/O
1778      vs. globally visible disks needed for ctrl stuff
1779      (merged from ecco-branch)
1780      - new active_file_loc... and mdsio_..._loc routines
1781      - affected packages: autodiff, ctrl, grdchk, mdsio
1782    
1783    checkpoint51c_post
1784    o introducing integer flag debugLevel
1785      - debLevZero: suppress all output
1786      - debLevA: standard
1787      - debLevB: equivalent to current debugMode=.TRUE.
1788    o introducing pathname variable mdsioLocalDir for mdsio
1789      that can be specified at runtime
1790      (relevant for cluster I/O to local disk)
1791    `
1792    >>>checkpoint51b_post
1793    adjoint of ptracers
1794    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1795    o extended state in checkpoint_lev?, etc.
1796    o alternative ctrl/cost with tr1 or ptracer
1797    o new comlev1_bibj_ptracers
1798    o new ptracers.flow
1799    o made ptracers_forcing same as external_forcing_s
1800    o added verification for adjoint with ptracers
1801      - adm. grdchk fail so far
1802      - tlm. grdchk OK
1803      - checked tapelev/comlev recomputations: OK
1804    <<<checkpoint51b_pre
1805    
1806    checkpoint51a_post
1807    o added code for biogeochemistry package
1808      - new pkgs: dic, gchem
1809      - new subroutine in ptracers
1810    o modify code for biogeo packages
1811      - in model/src and pkg/ptracers
1812    
1813    checkpoint51
1814    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1815      - autodiff, ctrl, exf, grdchk, seaice
1816      kept separate packages
1817      - cost, ecco, obcs
1818    o updating verification/internal_wave, verification/lab_sea
1819      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1820    
1821    checkpoint50i_post
1822    o Preparing next differentiable checkpoint and sync
1823      of MAIN vs. ecco-branch
1824      - 1st step: this one is differentiable
1825      - 2nd step: next(! not this) checkpoint will have updated packages
1826                  from ecco-branch)
1827    
1828    checkpoint50h_post
1829    o new package "land": provide surface BC for AIM.
1830    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1831    o AIM: use true log-P extrapolation for near surface temp (= as in
1832        F.Molteni paper) ; update aim.5l_cs output.
1833    o New variable in PARM03 for more flexible pickups
1834    o somewhat cleaned package initialisation sequence for
1835      ctrl/ cost/ ecco/ in packages_... routines
1836    
1837    checkpoint50g_post
1838    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1839      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1840      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1841        made the default because of faster convergence than ADI
1842    
1843    checkpoint50f_post
1844    o exf totally restructured
1845      - replaced all exf_set_ routines by one generic exf_set_gen.F
1846        and made sure it's still differentiable
1847      - split exf_getffields.F into new exf_bulkformulae.F
1848      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1849      - updated adjoint/makefile and relevant verif. accordingly
1850    
1851    checkpoint50f_pre
1852     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1853          + change Evap over land. (update aim.5l_cs output)
1854     o added missing .cvsignores and made uniform across expts
1855     o changed configuration of tidal_basin_2d expt
1856     o added pkg/debug functions for tracing code in fatal crashes
1857     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1858     o new fn in pkg/monitor to stop model if solution grows too big
1859     o removed lots of single quotes from comments
1860    
1861    checkpoint50e_post
1862    o make KPP work with PTRACERS
1863     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1864       nearly a copy of kpp_transport_s
1865     - there is no analogue to SurfaceTendencyS, so I have to use
1866       gPtr(of the surface layer) instead
1867    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1868    checkpoint50e_pre
1869    
1870    checkpoint50d_post
1871    o change kpp output from multiple-record state files to single-record state
1872      files analogous to write_state.F
1873    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1874      analogous to the cg2d-related output.
1875    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1876      so that writing to internal file fn (with length 512) fails.
1877    checkpoint50d_pre
1878    
1879    checkpoint50c_post
1880    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1881    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1882    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1883    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1884    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1885    
1886    checkpoint50c_pre
1887    Merging from release1_p13:
1888    o bug fix for pkg/seaice dynamic solver
1889    o Added SEAICE_initialHEFF to pkg/seaice
1890    
1891    checkpoint50b_post
1892    o store u*,v* in gU,V instead of in guNm1,gvNm1
1893    o in order to put the momForcing out of the Adams-Bashforth:
1894      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1895      to timestep.F
1896    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1897    o re-generate output for highly sensitive test-exp:
1898       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1899    
1900    checkpoint50b_pre
1901    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1902    o corrected CPP option mismatch in exf_Bulk... functions for case
1903      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1904    
1905    checkpoint50a_post
1906    o Bug fix for merging between c50 and KPP.
1907      ikey was passed from thermodynamics to kpp_calc via
1908      common block rather than being recomputed in kpp_calc,
1909      in contradiction with new key itdkey.
1910      New key ikppkey created, and tamc.h headers updated.
1911    
1912    checkpoint50
1913    - 2nd step of merge with ecco-branch:
1914      merge changes in ecco-branch back into main trunk
1915    - bug fix in find_alpha
1916    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1917    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1918    - merged some sliced AD support routines
1919    
1920    checkpoint49
1921    merged from ecco-branch:
1922    o exf:
1923      - Enable initialisation of forcing fields to constant
1924        (runtime) values.
1925      - in exf_getffields.F
1926        Reduce i-/j-loop to interior domain, discarding overlaps.
1927        That also fixes wrong TAF-key computations for key_1, key_2
1928        with bulf formulae.
1929      - exf_init.F modify #ifdef for exf_init_evap
1930      - exf_getffieldrec.F, ctrl_getrec.F
1931        The following INT-usages are not safe:
1932          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1933          fldcount = int(fldsecs/fldperiod) + 1
1934        and were modified.
1935    o autodiff: checkpoint_lev...
1936      - updated storing for bulk formulae (some arrays were missing)
1937      - added state for seaice package
1938      - synchronized with main branch
1939    o DIVA:
1940      Modif.s in
1941      - the_main_loop.F
1942      - the_model_main.F
1943      and added cost_final_restore.F cost_final_store.F
1944      o With these changes, it is possible to fully separate
1945        the first forward run to compute the cost function (mdthe_main_loop)
1946        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1947        into separate model executions.
1948        This enables better tuning of DIVA to given queue sizes.
1949      o Loss of cost function value in consecutive DIVA runs is
1950        fixed by storing to 'costfinal' file.
1951      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1952        beginning/end of adjoint integration is accounted for.
1953      The current changes apply to TAF-1.4.26.
1954      TAF has one remaining bug, requiring one manual change
1955      (see MITgcm manual).
1956    o cal: synchronized between MAIN and ecco-branch
1957    
1958    checkpoint48i_post
1959    o Changes to restore differentiability of code w.r.t. previous tag
1960      (mostly adding new routines to make list and replacing
1961      pressure by totPhiHyd).
1962    o Updated and merged grdchk package
1963      - has both ADM and TLM checks
1964      - works for single- and multi-proc.
1965      - output cleaned
1966      - worked successfully for parallel DIVA
1967    o genmake:
1968      - Adding -platform=SP4
1969      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1970    o Modif. for DIVA:
1971      ctrl_unpack should not be called in intermediate DIVA interval.
1972      (similar thing would apply for active files such as
1973      tbar, sbar, psbar, which should not be reinitialised;
1974      only relevant for ecco-branch)
1975    
1976    checkpoint48h_post
1977    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1978    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1979    o Added SEAICE_initialHEFF to pkg/seaice
1980    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1981    
1982    checkpoint48g_post
1983    --- EOS:
1984    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1985      store total Potential in totPhyHyd for diagnostics & EOS.
1986    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1987    --- Pressure/geopotential gradient:
1988    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1989    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1990      ( changes results of global_ocean_pressure )
1991    o NLFS + z-coord.: add eta*Rho' contribution.
1992    o accurate phiHyd when using interface-W at the middle between 2 centers
1993     ( changes results of ideal_2D_oce )
1994    o includes r* 2nd term in potential gradient.
1995    
1996    checkpoint48f_post
1997    Merging from release1_p12:
1998    o Modifications for using pkg/exf with pkg/seaice
1999      - improved description of the various forcing configurations
2000      - added basic radiation bulk formulae to pkg/exf
2001      - units/sign fix for evap computation in exf_getffields.F
2002      - updated verification/global_with_exf/results/output.txt
2003    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2004      (SBO) core products, including oceanic mass, center-of-mass,
2005      angular, and bottom pressure (see pkg/sbo/README.sbo).
2006    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2007      to avoid negative values in shallow regions.
2008      - updated verification/natl_box/results/output.txt
2009      - updated verification/lab_sea/results/output.txt
2010    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2011    o Added useSingleCpuIO option (see PARAMS.h).
2012    o Updated useSingleCpuIO option in mdsio_writefield.F to
2013      work with multi-field files, e.g., for single-file pickup.
2014    o pkg/seaice:
2015      - bug fix in growth.F: QNET for no shortwave case
2016      - added HeffFile for specifying initial sea-ice thickness
2017      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2018    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2019      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2020    o pkg/seaice:
2021      - adjoint-friendly modifications
2022      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2023    
2024    checkpoint48e_post
2025    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2026    o dynamics: change definition of computational domain & adapt mom_fluxform
2027      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2028    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2029        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2030        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2031        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2032        inverted_barometer solid-body.cs-32x32x1
2033      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2034    
2035    checkpoint48d_post
2036    o in preparation for r*:
2037     a) use pre-computed gradient of hydrostatic potential:
2038        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2039     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2040        => affects results of glob_oce_pressure (different truncation error)  
2041      update output.txt of ideal_2D_oce & global_ocean_pressure
2042    
2043    checkpoint48d_pre
2044    o in preparation for r*:
2045      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2046      pass the 2 comp. of the grad. as arguments to momentum S/R.
2047      but for the moment, only used if it does not change the results.
2048    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2049    
2050    checkpoint48c_post
2051    Modifications in treatment of initial flux forcing controls
2052    to avoid extra storing of flux fields.
2053    
2054    checkpoint48c_pre
2055    o Added tidal_basin_2d experiment (currently 1D!)
2056    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2057    
2058    checkpoint48b_post
2059    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2060     (modification to pressure gradient not yet implemented)
2061    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2062      (for U & V) that are used for vertical advection of momentum.
2063    
2064    checkpoint48a_post
2065    o In preparation for r*, use temp. array to compute vertical transport
2066       in flux-form momentum pkg. => change results of few test-exp.
2067      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2068                        lab_sea, natl_box & plume_on_slope
2069    
2070    checkpoint48
2071    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2072    
2073    checkpoint47j_post
2074    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2075    o moved adexch from forward_step to addummy_in_stepping
2076    o added exch in ctrl_map_...
2077    o aveFreq.=0. at end of cost_final to avoid overwrite in
2078      reverse checkpointing loop
2079    o Yet more changes in gmredi:
2080      * adgmredi_calc_tensor
2081        avoiding all recomputation of gmredi_slope_limit
2082      * adgmredi_x/y/rtransport
2083        added flag for excessive storing to avoid recomp. of
2084        u/v/rtans, dTdx/y/z
2085        -> this is not really necessary and very memory-consuming
2086      * adgmredi_slope_psi:
2087        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2088      * gmredi_slope_limit
2089        re-activated full calculation of taperfct for case 'ac02'
2090    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2091    
2092    checkpoint47i_post
2093    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2094    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2095      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2096    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2097    o gmredi: fix few bugs.
2098    
2099    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2100    This will be a good checkpoint to plug into the ecco-branch.
2101    o few modif.'s to get latest version adjointed
2102      (mainly kick out code in ini_linear_phisurf)
2103    o modif's to run adjoint with exactConserv
2104    o case GM_BOLUS_ADVEC should be cleaned
2105      S/R gmredi_slope_psi should be cleaned
2106    o verification/carbon now has exactConserv=.TRUE.
2107    
2108    checkpoint47g_post
2109    o time-average AIM output: becomes independent from statvars time-average
2110      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2111    o After TAF bug fix:
2112      Tested adjoint of gmredi package.
2113      Tests were done with checkpoint47 rather than with latest
2114      checkpoint47f_post since the latter is broken for the adjoint
2115      verification/carbon/ contains both ADM and TLM gradient checks.
2116    Here they are, before they get changed/lost/stolen.
2117    Mostly modif.'s to fix numerical sensitivities.
2118    Gradient checks OK for
2119    - GM_taper_scheme:
2120      * clipping
2121      * ac02
2122      * linear
2123      * glw91
2124      * dm95
2125      * ldd97
2126    - GMREDI_OPTIONS:
2127      * GM_VISBECK_VARIABLE_K
2128      * GM_NON_UNITY_DIAGONAL
2129      * GM_EXTRA_DIAGONAL
2130      * GM_BOLUS_ADVEC
2131    in conjunction with data.gmredi parameters to be checked in
2132    in a few minutes under verification/carbon/code/
2133    
2134    checkpoint47f_post
2135    Merging from release1_p10:
2136    o modifications for using pkg/exf with pkg/seaice
2137      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2138        and SEAICE_EXTERNAL_FLUXES
2139      - pkg/exf CPP options EXF_READ_EVAP and
2140        EXF_NO_BULK_COMPUTATIONS
2141      - usage examples are Experiments 8 and 9 in
2142        verification/lab_sea/README
2143      - verification/lab_sea default experiment now uses
2144        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2145    
2146    checkpoint47e_post
2147    o created a tag prior to creating a branch
2148    
2149    checkpoint47d_post
2150    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2151      at the bottom boundary had an erroneous half slip boundary condition
2152    o added bottom drag and no slip boundary condition capabilities to
2153      oceanic pressure coordinates code
2154    o added new verification experiment global_ocean_pressure, this experiment is
2155      also described in the tutorial section of the manual
2156    checkpoint47d_pre
2157    
2158    checkpoint47c_post
2159    o Added a verification experiment for a global cubed-sphere ocean run
2160      -  verification/global_ocean.cubed32x32x30
2161      -  uses pkg/therm_seaice and pkg/bulk_forcing
2162    
2163    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2164    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2165      when using P-coordinate; only implemented for atmospheric config.
2166    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2167      NOTES: requires option NONLIN_FRSURF to be "#define".
2168    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2169    
2170    checkpoint47b_post
2171    Merging from release1_p9:
2172    o pkg/seaice
2173      - removed GOTO's and added taf directives
2174      - double precision constants to reduce the g77 (Linux)
2175        to F77 (SGI) differences reported in release1_p8
2176    o tools/genmake
2177      - added SGI options
2178    o verification/testscript
2179      - updated to that of checkpoint47a_post
2180    o verification/global_ocean.90x40x15/input/eedata
2181      - modified for SGI f77 compatibility
2182    o verification/lab_sea
2183      - added description of sea-ice model
2184      - added missing matlab routines
2185      - added test of thermodynamics parallelization
2186    
2187    checkpoint47a_post
2188    o new pkg: aim_v23
2189     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2190       for now, keep the same surface forcing as before.
2191     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2192     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2193     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2194    o add diagnostic of surface correction term in monitor output
2195    
2196    o bulk_force and therm_seaice
2197    - Two packages:  bulk_force (Bulk forcing)
2198      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2199    - Earlier integration from Stephaine Dutkiewicz
2200      and Patrick Heimbach.
2201    - Two ifdef statements for compile time,
2202       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2203    
2204    checkpoint47
2205    differentiable version of checkpoint46n_post
2206    o bug fix in quasihydrostaticterms
2207    o * "clean" adjoint code (in terms of extensive recomputations)
2208        can now be obtained for all GMREDI options (i.e. for
2209        - GM_VISBECK_VARIABLE_K
2210        - GM_NON_UNITY_DIAGONAL
2211        - GM_EXTRA_DIAGONAL
2212        - GM_BOLUS_ADVEC )
2213      * However, wrong gradient check problem remains unsolved.
2214      * New CPP options have been introduced for different
2215        tapering schemes
2216    o external_fields_load now part of differentiation list
2217    o pressure needs multiple storing;
2218      would be nice to have store_pressure at beginning or
2219      end of forward_step, e.g. by having phiHyd global (5-dim.)
2220      (NB: pressure is needed for certain cases in find_rho,
2221      which is also invoked through convective_adjustment).
2222    o recomputations in find_rho for cases
2223     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2224    o #define ATMOSPHERIC_LOADING should be differentiable
2225    o ini_forcing shifted to begining of initialise_varia
2226    o Incorporating QNVS line search routines into MITgcm
2227      (this is separate code, and therefore not under pkg)
2228      lsopt/, optim/
2229    o Updated verification/carbon/
2230      - #define GM_VISBECK_VARIABLE_K
2231      - GM_taper_scheme    = 'ldd97'    
2232    
2233    checkpoint46n_post
2234    Merging from release1_p8:
2235    o verification/natl_box:
2236      updating new external_fields_load routine
2237    o New package: pkg/seaice
2238      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2239      The sea-ice code is based on Hibler (1979-1980).
2240      Two sea-ice dynamic solvers, ADI and LSR, are included.
2241      In addition to computing prognostic sea-ice variables and diagnosing
2242      the forcing/external data fields that drive the ocean model,
2243      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2244      The implied surface heat flux is then stored in variable
2245      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2246      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2247      non-local transport term.  Because this call precedes model
2248      thermodynamics, temperature under sea-ice may not be "exactly" at
2249      the freezing point by the time theta is dumped or time-averaged.
2250      N.B.: fairly large differences in accuracy occur across
2251            different platforms/compilers; comparison between
2252            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2253            generated output gives:
2254       T           S           U           V
2255      C D M    c        m  s        m  s        m  s        m  s
2256      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2257      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2258      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2259    
2260      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2261    o GAD:
2262      - generated new common blocks to account for call of
2263        same gad routines with differing traceridentities
2264        (needed to modify tracerIdentity indices in GAD.h)
2265      - generated separate common blocks for case useCubedSphereExchange
2266        (Department of Futurology)
2267      - parameter lists to gmredi_?transport: added tracerIdentity
2268      - added new key indices to tamc.h
2269    o external_fields_load:
2270      - added this routine to TAF list
2271      - needed to make some common blocks global and additional storing
2272        along the same lines as exf package (checkpoint_lev?_directives.h)
2273    o exf:
2274      updated external forcing package
2275      - bug fixes carried over from ecco-branch
2276        (missing OBCS_OPTIONS.h in two routines)
2277      - enable easy to use "no forcing".
2278      - added exf I/O for atmospheric loading
2279      - added exf I/O for runoff data
2280      - transfered scaling between exf <-> MITgcm to exf namelist
2281    o Adding new verification experiment global_with_exf.
2282      This verification experiment is almost identical to the
2283      global_ocean.90x40x15 experiment, except that it uses
2284      the exf (and cal) package instead of the
2285      external_fields_load routine (cf README file).
2286    
2287    checkpoint46m_post
2288    o modified testscript to return -- when there are no lines of "%MON" output
2289    o added new flag "quasiHydrostatic" for QH mode
2290      and new routine quasihydrostaticterms()
2291    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2292      New routine: mom_u_coriolis_nh()
2293    o fixed sign of non-hydrostatic metric terms in u and v equations.
2294      Depend on correct sign of gravitySign.
2295    o added work.pc* to .cvsignore in aim directories using ifc
2296  o introduced flag for controllin non-hydrostatic metric terms  o introduced flag for controllin non-hydrostatic metric terms
2297  o removed gravitySign from PARM04  o removed gravitySign from PARM04
2298  o switched to g77/ifc from pgf77 in aim experiments  o switched to g77/ifc from pgf77 in aim experiments

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