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revision 1.16 by cnh, Tue Nov 3 15:31:08 1998 UTC revision 1.669 by heimbach, Wed Jun 7 02:02:52 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    checkpoint58h_post
8    * Modifications for bottom topography control
9      o replace hFacC by _hFacC at various places
10      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
11      o add non-self-adjoint cg2d_nsa
12      o update autodiff support routines
13      o re-initialise hfac after ctrl_depth_ini
14      o works for 5x5 box, doesnt work for global_ocean.90x40x15
15    * Adding verification for 5x5 box (4-layer) bottom topography control
16    
17    checkpoint58g_post
18    o pkg/ggl90:
19      - add parameter (minimum surface kinetic energy)
20      - fix bug (avoiding division by zero)
21    o couple pkg/thsice to pkg/seaice:
22      - modify advection in seaice to accomodate new scalar fields to be advected
23      - only muliDimAdection scheme work with seaice/thsice
24      - mapping of thsice-variables to seaice-variables, back and forth
25      - does not break the verification experiments, but does not give the
26        desired results either
27    o pkg/seaice
28      - make (default) second order advection a bit less confusing?
29    
30    checkpoint58f_post
31    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
32      to pkg/seaice):
33      - new routines thsice_map_exf and thsice_get_exf provide the interface
34      - add an additional formal parameter to thsice_solve4temp
35    o pkg/exf:
36      - add new fields wspeed, snowprecip (to be able to couple to thsice)
37      - correct Stefan-Boltzmann constant
38      - new parameter for longwave surface emittance
39      - separate some stuff from exf_bulkformulae into new routines  
40        exf_radiation, exf_wind
41      - add new parameters and constants: longwave emissivity for ocean, ice
42        and snow, evaporation parameters over ice
43      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
44        either wind from stress or stress from wind
45    o pkg/thSIce:
46    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
47    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
48       and THSICE_CALC_THICKN
49    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
50    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
51      to make debugging easier.
52    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
53    o pkg/bulk_force:
54      - clean-up comments and parameters ;
55      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
56    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
57      generate new output for test-experiment: aim.5l_cs.thSI
58    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
59      testreport accordingly
60    
61    checkpoint58e_post
62    o SEAICE_CGRID adjoint done
63    o R_STAR adjoint implemented.
64      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
65      * need to sort out init. of h0facc, etc.
66    o Make pkg/profile fully independent of ecco,cost, etc. stuff
67      to be able to use it in pure forward.
68    
69    checkpoint58d_post
70    o upgrade simple test-experiment to tutorial example:
71     step.1: duplicate the experiment and (step.2) will remove the old copy.
72      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
73      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
74      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
75      tutorial_global_oce_biogeo    <- copy of dic_example
76      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
77      tutorial_plume_on_slope       <- copy of plume_on_slope
78      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
79      tutorial_global_oce_optim     <- empty for now (David ?)
80      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
81     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
82    o correct a sign problem in cost_scat.F
83    o obcs and ptracers: fix boundary conditions for advections schemes
84      with larger stencil
85    o thsice adjoint: start
86    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
87      completeness
88    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
89      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
90    o ptracers adjoint:
91      * avoid extensive recomputatations
92      * fix missing re-init. of gptr (missed by TAF)
93    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
94      me to turn off the excessive output to STDOUT that this package produces
95    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
96      and add those terms in Vector-Invariant formulation.
97    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
98      if the control period (xx_hfluxperiod etc) is 0
99    o in profiles pkg, clean routines and fix details
100    o in ecco pkg, reading ssh data:
101      fix problem in case the model does not start at iter0=0
102    o fix mnc-pickup/restart for ptracers
103    o new package prifiles:
104      code to compute profile-based cost by Gael Forget
105      (modifs in ecco, ctrl, autodiff)
106    o Benign bug fix in initialization (spotted by M. Mazloff) of
107      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
108    
109    checkpoint58c_post
110    o adjoint: finish NLFS adjoint and provide reference output in
111      verification/global_ocean.90x40x15/results_ad_nlfs
112    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
113      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
114      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
115      with SEAICE_CGRID defined.
116    o move calendarDumps from "data" to "data.cal" and clean-up the code
117      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
118    o add useEXF & useCAL flags (for now, set in hard-coded way)
119    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
120      (were missing in NH mode, and wrong in quasihydrostatic mode).
121      waiting for Chris updated version of calc_gw to add those CALLs.
122    o fix bug in quasihydrostatic S/R ;
123      add a test for this option: global_ocean.90x40x15.qshyd
124    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
125      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
126    o add on/off flag useOffLine for package OFFLINE
127    o seaice:
128      - modify advection so that it works also on the C-grid
129      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
130        problem in multi-tile runs with C-grid
131      - add flags for clipping ice velocities and/or masking solver forcing
132      - fix drag (ocean on ice) formulation and a bug that caused noise in the
133        C-grid solver
134      - added a few comments to seaice_diffusion.F
135      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
136        are now exclusive)
137      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
138        required re-ordering the code a little:
139       + make DAIRN global variable (defined in SEAICE)
140       + move computation of the viscosities eta and zeta into a new separate
141         routine (because I need to recompute them in seaice_ocean_stress.F)
142    
143    checkpoint58b_post
144    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
145      update output.txt of exp. aim.5l_cs.thSI
146    o various mnc cleanups and improvements:
147      + shrink lookup tables by factor of ~4
148      + better error reporting when running out of lookup space
149      + able to handle longer path/file names (up to 500 chars)
150    o adjoint:
151      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
152      - TBD: "hidden" mom_vecinv recomp. in dynamics
153    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
154     (allow to differentiate between forcing components using new integer flags:
155      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
156     and add new flag to put Dissipation tendency out of Adams-Bashforth.
157    o ecco
158      - enable trend removal from SSH anomaly obs.
159    o adjoint
160      - a fix for PmEpR when #undef EXACT_CONSERV
161      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
162      - try to fix "hidden" recomp. in forward_step for NLFS
163        (NLFS seems broken sometimes after I checked it in)
164    o seaice:
165     - add c-grid version of the dynamic solver:
166       + three new routines that are the c-grid substitute lsr, dynsolver
167         and ostres
168       + put a few fields that were local to dynsolver into global common
169         blocks, so that I can move the computation of stresses etc into
170         seaice_lsr (saves coding but may break the adjoint).
171     - replace more hardwired parameters by runtime parameters
172     - add ice masks that mask the rhs of the implicit solvers where there
173       is no ice (commented out in seaice_dynsolver, because i am not sure
174       if this works properly), eventually this should replace the clipping
175       of ice velocities in seaice_dynsolver to +/-40cm/s.
176    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
177      include it only where its needed
178    o move balancing of fluxes before the call of external_forcing_surf
179    o seaice:
180      - correct units of turning angles (now they are really in degrees)
181      - move computation of GWATX/Y out of main routine into dynsolver
182      - initialize GWATX/Y in seaice_init
183    o Apply mask on Fresh-Water flux (needed for SSH forcing).
184      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
185    o seaice: add runtime flags for turning angles (default to zero)
186    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
187      and trend from exf forcing and ctrl control adjustments
188    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
189      (since checkpoint57x_post)
190    o change the default rotation period to 86164.s = the Earth rotation
191    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
192      and based on a reference stratification. Tested within hs94.cs-32x32x5.
193    o seaice advection: add code for choosing between the default (2nd order
194      central differences) and multiDim advection schemes provided by
195      pkg/generic_advdiff
196    o seaice:
197      - removed all references to SEAICE_GRID.h fields from
198        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
199        (cubed-sphere configuration will change a little)
200      - grid computations in seaice_init are obsolete now.
201      - cleaned up code a little so that is easier to read (hopefully).
202      - added new (better?) discretizations of default advection and diffusion
203        (turn on with SEAICEuseFluxForm)
204      - replace 1 in 3d global fields by kSurface in growth.F
205      
206    checkpoint58a_post
207    o seaice:
208      - bug fix in advect.F
209    o shelfice:
210      - separate shelfice load anomaly from pload (breaks with time
211        dependent forcing), => introduce constant field shelficeLoadAnomaly.
212        Its default is 0., but it may be computed more cleverly from (unknown)
213        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
214        done offline. A good approximation of the pressure load anomaly is
215        necessary to avoid large initial adjustment processes underneath
216        deep-reaching shelfice.
217      - small fix in ISOMIP shelfice_thermodynamics
218      - add more sophisticated thermodynamics of Hellmer (1989), this is
219        now the default
220      - give a few constants more intuitive names
221    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
222      if bulk formulae are used in long integration (especially EmPmR). Turn
223      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
224      if balancePrintMean, the imbalance that is substracted is printed to
225      STDOUT.
226    o fix bug (typo) in obcs_apply_eta.F
227    o add a new package shelfice which enables us to model the circulation
228      underneath shelf-ice with draughts of hundreds of meters.
229     - works
230     - to do: + include improved thermodynamics
231              + check whether kSurfC (from model/inc/SURFACE.h) can be used
232                instead of new field kTopC
233              + can we use topoFile, Ro_surf and existing code in ini_depth.F
234                instead of new field R_shelfIce and new code in ini_depth.F
235                and ini_mask_etc.F?
236              + adjust vertical mixing schemes?
237    o seaice pkg:
238     - add a cpp-flag to include a simple formula for a salinity dependent
239       freezing point of sea water at the surface
240     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
241       meridional stresses are now different (and hopefully correct)
242    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
243       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
244       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
245    o pkg/diagnostics: add options and parameters for regional-statistics
246       diagnostics ; define regions by reading a region-mask from a file
247       (might add other options later)
248    o pkg/bulk_force:
249     - add option and parameters to use AIM surface-flux formulae.
250     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
251       others forcing fields (defined in PARM05, parameter file "data") are loaded
252       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
253     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
254     - use the right EXCH call for uwind,vwind (to work on CS-grid).
255     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
256       and parameters (note: calcWindStress replaces .NOT.readwindstress).
257     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
258    
259    checkpoint58
260    o add "--embed-source" option to genmake2 which, when the supporting
261      tools can be compiled (as determined by genmake2) will turn on the
262      embed_files package which then embeds the entire MITgcm source code
263      (*.[fFhc] + Makefile) used for the build within the executable
264      - requested by CNH but off by default
265      - adds a paltry <9MB to the mitgcmuv executable in most cases
266      - only writes the output when useEMBEDSRC in eedata is true
267    o clean up 3-dim. relaxation codes:
268      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
269      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
270      * Thanks to Tom Haine for testing!
271    
272    checkpoint57z_post
273    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
274      affects output (@ truncation level) of exp. plume_on_slope ; updated.
275    o fix the pickup behavior for obcs in combination with ptracers
276    o fix a bug in ptracers_external_fields_load
277    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
278      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
279    o transfered surface NH pressure to eta field (if exactConserv).
280    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
281         and update lab_sea output.txt file.
282    o completing 3-dim. relaxation code: additional term
283         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
284      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
285      * At compile time, in "EXF_OPTIONS.h" set
286          #define  ALLOW_CLIMTEMP_RELAXATION
287          #define  ALLOW_CLIMSALT_RELAXATION
288      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
289          tauThetaClimRelax3Dim = 15552000.0,
290          tauSaltClimRelax3Dim  = 15552000.0,
291      * 3 cases:
292          1) Use a constant-in-time 3-dim. field
293          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
294          3) Real-time relax. to time-evolving prescribed field
295    o Adding Laplacian-type smoothness constraint on
296      initial and boundary (forcing) controls (ic, bc)
297      * enable at compile-time via
298        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
299      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
300      * Absolute scale somewhat unclear so far
301      * no area weighting was included since no other cost term does so far
302    
303    checkpoint57y_post
304    First step for a NLFS adjoint
305    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
306    o new init. routines for calc_r_star, calc_surf_dr
307    o still need to deal with ini_masks_etc
308    o testreport seemed happy
309    checkpoint57y_pre
310    
311    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
312    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
313    o add new offset feature to offline pkg (plus minor cleanup)
314    o cfc fixes for final year of integration
315    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
316      be in GCHEM_OPTIONS).
317    
318    checkpoint57x_post
319    o fix testreport Pb in multiple test experiment.
320    o cleanup our namelist syntax in verification:
321      - make it more F95 standards compliant (some work still needed)
322      - allows the vast majority of our tests to work with gfortran
323    o Non-Hydrostatic:
324     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
325     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
326    o Allow to apply AB on T,S rather than on AB(gT,gS):
327     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
328     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
329       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
330     - need a "clever" read_pickup to restart from the other AB formulation
331    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
332    o remove some unused variables (reduces number of compiler warnings)
333    o adjoint
334      * Disable useVariableViscosity for adjoint for time being
335        (there are a number of extensive recomputations)
336      * Initialize certain variables needed for adjoint
337    
338    checkpoint57w_post
339    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
340                 fix the singleCpuIO RS version of MDSWRITEFIELD
341       and add a WARNING if using globalFiles=T with multi-processors.
342    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
343      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
344    o tracer advection scheme:
345      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
346       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
347       was not very convenient).
348      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
349       (further tests needed for the implicit DST & Flux-Limiter schemes).
350    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
351      and sRef for convenience, handy, when you want to initialize
352      ptracers in a large domain with a constant non-zero value. Also,
353      untangle ptracers_init.F a little.
354    
355    checkpoint57v_post
356    o change dome exp. to use variable viscosity in side-drag terms.
357    o remove all the files from the cfc_offline test since they are now
358      incorporated into tutorial_cfc_offline which has been producing
359      identical results for a few days of testing
360    o add new parameter: sideDragFactor to enable half-slip-side BC
361      and change side-drag S/R to use viscosity from mom_calc_visc
362      (can switch back by setting sideDragFactor=0.); affects results at
363      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
364       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
365    o vorticity & strain are now computed without masking, to account for
366      no-slip-side BC in variable viscosity calculation ; mask is applied
367      anyway later on, before computing advection/coriolis terms.
368    o modify exp4 to test new obcs support for reading from external files
369      and for passive tracers
370    o fix behavior of ptracers_monitor when monitor output is written to a
371      netcdf-file; still not independent of monitor.F (writes in the same
372      file).
373    o change default value of tRef (put a uniform, meaningful value for ocean
374      & atmos) and initialize sRef (was missing, as Martin mentioned).
375    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
376      to be proportional to enstrophy dissipation length.  Thus,
377       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
378      This is now consistent with Smagorinsky and with the manual.
379    
380    checkpoint57u_post
381    o OBCS and PTRACERS: add open boundary support for passive tracers
382      - either use homogenous (pseudo) v.Neumann conditions or prescribe
383        OB-values from file; this is not different from the way theta and salinity
384        are treated
385      - however, Orlanski-radiation conditions are not supported, and the model
386        will stop if you use pTracers and Orlanski at the same time.
387      - beefed up the rountine obcs_external_fields_load: now only those open
388        boundary values are overwritten with values from files for which there
389        are really files, otherwise the OB-fields remain untouched. This makes
390        it possible to use different OBs at different ends of the domain (as
391        with EXF)
392    o reduce number of exch calls in shap_filt (s2).
393    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
394      truncation level) 4/5 MLAdjust test results (11&12 digits match).
395    
396    checkpoint57t_post
397    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
398    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
399      same truncation, independent of the face number: affects affects several
400      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
401    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
402      note that biharmonic viscosity + no-slip was not tested in any experiment.
403    o fix bug in non-linear free-surf side-drag ; generate new output for
404      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
405    o make mnc honor the writeBinaryPrec flag for most kinds of output
406    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
407    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
408      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
409    o add brackets in multi-terms sum to get same truncation, independent of
410      the face number (manage to get exactly same value of gU,gV at the cs-edge)
411      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
412    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
413      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
414      a maximum grid-scale Reynolds number.  Also, changes all length calculations
415      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
416      Suggested values of viscosity parameters found in mom_calc_visc.
417      Many new viscosity diagnostics available.
418    
419    checkpoint57s_post
420    o Add clearing-house for viscosity calculations, mom_calc_visc and
421      correct numerous bugs in LeithD and Smagorinsky discretizations.  
422      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
423      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
424      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
425      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
426      The Strain-Tension form is now called with useStrainTensonVisc=.true.
427      ViscAhStrain and viscAhTension are now retired.
428    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
429    o In response to JMC's bug report, genmake2 now ignores any soft-links
430      that it finds in the *current* directory when searching for files.
431      Soft-links found in any other source directories will still work as
432      they did before.
433    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
434      a C routine to unlimit the stack size
435    o mnc-ify pkg/aim snapshot vars
436    o mnc-ify pkg/land as requested by Daniel
437    o various changes to mnc including:
438      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
439      - output can now be grouped so that all files within a group
440          change the ITER portion of their names in lock-step together
441      - can now read ("global") PER-FACE (in addition to PER-TILE) files
442          and works with both EXCH1 and EXCH2 (but needs more testing)
443      - writing works for all verification test cases w/ g77 on Linux
444    
445    checkpoint57r_post
446    o make MNC variable initialization happen earlier
447    o add diagnostics for (almost) each term of the momentum Eq.
448    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
449    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
450    o remove MINIMAL_TAVE_OUTPUT option ;
451      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
452    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
453      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
454    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
455    o add time-dependent SST, SSS control
456    o cost terms in ecco/ modularized (new cost_generic.F)
457    o cost_averages routines are modularized (new cost_averagesgeneric.F)
458    o new infrastructure for seaice model vs. obs misfits in seaice/
459      * driver from the_main_loop.F is seaice_cost_driver.F
460      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
461      * gradient check in Exp. 6a of natl_box_adjoint/
462    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
463      (see README file)
464    
465    checkpoint57q_post
466    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
467    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
468      - bug was reported by Jean-Michel and Ian Fenty
469    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
470      update exp. cpl_aim+ocn output.
471    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
472      Needed for high-res. runs with large global files
473      to be able to limit tapelev size
474    o Changed some tests for adjoint:
475      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
476      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
477      * global_ocean.90x40x15/ back to default 3-level checkpointing
478    o Modifications to enable scripted COMMON to MODULE conversion
479      * verification/OpenAD/code/ has necessary scripts and description;
480      * converts, compiles and runs successfully;
481    
482    checkpoint57p_post
483    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
484    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
485      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
486    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
487    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
488      (was already the case for dissipation with mom_vecinv,
489       and also the case for grad.PhiHyd when staggered-timeStep)
490      This will allow to put dissipation out-off the AB time-stepping.
491     Unfortunately, affects truncation error. Update output of exp. that "fails"
492      (cg2d matching number) and leave the others for later: front_relax(10),
493      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
494      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
495    
496    checkpoint57o_post
497    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
498      (2) its ready to be documented during the 20050801 DocFest
499    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
500      for ideal_2D_oce and lab_sea on linux_ia32_g77
501    o set to #undef CTRL_SET_OLD_MAXCVARS_30
502      in global1x1_tot/code_seaice_adj to access indices 32, 33
503      (worth another tag)
504    
505    checkpoint57n_post
506    o adding precip control xx_precip 32
507    o adding swflux control xx_swflux 33
508    o Replacing 10 forcing penalty cost routines by 1 generic.
509    o Implementing partitioning in time-mean and variable adjustment
510      for atmos. state.
511    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
512    o in natl_box_adjoint:
513      * updated exp 1 to 10
514        (but does not have time-mean vs. variable split results yet)
515    o updated global1x1/*_seaice_adj/
516      to incorporate latest changes
517    o enable useSingleCpuIO for mdsio vector routines
518      (applies in particular to tapelev I/O)
519    o removed inefficient K-loop in all active_file*control*.F
520    
521    checkpoint57m_post
522    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
523      and advect_cs (use EXCH-2 and standard cs-32 grid files).
524    o pkg/exch2: filling of face-corner halo regions is optional
525      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
526    
527    checkpoint57l_post
528     tag before updating tutorials (pre-release-2)
529    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
530       for output and interpolation of input fields onto model grid)
531    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
532       Affects results of exp. rotating_tank ; update output.txt.
533    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
534          and taking the square quantity and/or using a fraction-weight field.
535    o fix aim_diagnostics_init.F mate numbers.
536    o add mnc output capability to diagnostics/diagstat and update
537      our cvsignore files for the ACSII output generated
538    
539    checkpoint57k_post
540    o lab_sea now uses diagnostics package and provides a suite of
541      new EXF diagnostics output.
542    
543    checkpoint57j_post
544    o exf
545      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
546        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
547        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
548      * extended diagnostics output
549        - now includes all EXF variables
550        - hs, hl moved to common block
551        - separate S/R for diagnostics, called after ctrl vector is added
552        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
553        - EXFqnet contains true Qnet (i.e. includes qsw)
554      * updated verif. lab_sea, global_with_exf
555      * Rearranging hflux (exf_mapfields -> exf_getforcing)
556        to ensure that diagnostics sees a true EXFqnet
557    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
558    o diagnostics pkg: change pointers so that 1 diagnostic can be used
559      several times with different frequencies.
560    o mnc-ify the thsice package as requested by Daniel Enderton
561      - the monitor--MNC output needs work
562      - many attributes need to be added (most are currently blank)
563    o mnc-ify theaim_v23 package as requested by Daniel Enderton
564      - many attributes need to be added (most are currently blank)
565    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
566    o add Sadourny like discretization to the 4th.O vorticity advection scheme
567    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
568      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
569         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
570    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
571     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
572    
573    checkpoint57i_post
574    o Diagnostics package was changed: diagnostic allocation is now deactivated
575      by setting an empty file name in the namelist (used to be by setting 0 frequency)
576    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
577      add 1rst Order upwind vertical Shear.
578    o add a quick fix for A/B checkpointing in OFFLINE mode
579    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
580      end-run around the C/Fortran linking horror in eesup/src/timers.F
581    o added pkg/runclock: allows user to terminate run based on wall clock
582    o added non-hydrostatic scaling parameter: nh_am2
583    o pkg/my82: futile attempt to make results compiler-independent by adding
584      some "_d 0", etc. no effect.
585    o for mnc output, fill the 'T' coordinate var with myTime and create a
586      separate 'iter' variable for iteration count
587    o pkg/diagnostics:
588      add new capability: output of Global/Regional & per-level statistics ;
589      tested against monitor output (including land & thSIce) on various exp.
590    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
591    
592    checkpoint57h_done
593      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
594      data.diagnostics, data.gchem, data.ptracers) is done.
595    
596    o pkg/diagnostics: prepare for Global/Regional statistics.
597      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
598    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
599      and rename it: DIFFERENT_MULTIPLE
600    
601    checkpoint57h_post
602    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
603    o pkg/diagnostics: change output frequency, now in seconds (instead
604      of Nb of iterations). This requires to change data.diagnostics.
605    checkpoint57h_pre
606    
607    o in mnc, let the user create the output dir if both mnc_outdir_date
608      and mnc_outdir_num are false
609    o add fflags() to pkg/diagnostics which allows one to specify, on a
610      per-file basis, the file precision [default behavior is unchanged]
611    o added diagnostics to pkg/kpp, including computation of mixed layer
612      depth based on a temperature/density criterion
613    o updated verification/natl_box to test the new pkg/kpp diagnostics
614    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
615    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
616    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
617      not mnc -- this mistake was found by JMC and is now corrected
618    
619    checkpoint57g_post
620    o add Adams-Bashforth 3rd Order time stepping:
621      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
622      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
623    checkpoint57g_pre
624    
625    o make lambda[Theta,Salt]ClimRelax spatially varying
626      (default remains spatially uniform constant based on tau)
627    o added new control variables
628      * init. uVel, vVel, etanN
629      * lambda[Theta,Salt]ClimRelax
630    o separate masks used for ctrl_pack/unpack 'from write_grid' output
631      (suggested by G. Forget)
632    
633    checkpoint57f_post
634    o add parameter "baseTime" = model base time = time at iteration zero
635      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
636      account for baseTime shift
637    o move Coriolis arrays from PARAMS.h to GRID.h
638    checkpoint57f_pre
639    
640    o mnc-ifying the seaice package
641    o introduced an alternative length scale calculation for use in the limiting
642      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
643    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
644    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
645      as well as grad(vort3).  Made it compatible with both approximate form
646      for the cubed sphere and full form of these gradients.  Added flag
647      useFullLeith to select between approximate and full form.  
648    o add "d0" in getcon.F to reduce differences between compilers/platforms
649      update output.txt of exp. fizhi-gridalt-hs
650    o change port_rand funtion to allow to set the seed.
651    o fix obscure MNC bug involving conversion between reals and integers
652      - it caused no problems with certain (eg. gcc, ifc) compilers but the
653        new version is now more standards-compliant
654    o adjoint-related modifications
655      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
656      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
657      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
658    
659    checkpoint57e_post
660    o Adding eddy stress controls a la Ferreira et al.
661    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
662    
663    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
664      update output.txt of exp. fizhi-gridalt-hs
665    o add more "Z" dimensions and associated coordinate vars to MNC
666    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
667    o parameter calendarDumps: when set, approximate months (30-31 days) and years
668      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
669      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
670      months and years.  Requires pkg/cal.
671    o diagnostics: add pickup functionality
672      - off by default for backwards compatibility
673      - current version only uses MDSIO -- MNC will be added
674    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
675    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
676    
677    checkpoint57d_post
678    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
679    o modify verification/ideal_2D_oce so that it tests the creation of mnc
680      output from the diagnostics package
681    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
682    o make genmake2 more portable by using ".$FS" instead of ".f" for more
683      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
684    o add coordinate variables to the MNC output from the diagnostics package
685    o change MNC-flags default value: true when useMNC=TRUE
686    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
687      the ability (off by default) to read the grid information using MNC
688    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
689    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
690    o do snap-shot diagnostics at the middle of the time-interval (instead of
691      at the end).
692    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
693      new test for AIM with thSIce + slab-ocean
694    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
695    o move state variable diagnostics to the beginning of the time step ;
696      (note: still needs some work specially for snap-shot diagnostics)
697      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
698    
699    checkpoint57c_post
700    o Change testing option (-ieee) to get closer agreement between g77 & ifort
701    o generate new output.txt files on faulks with g77 & the new -ieee option
702    checkpoint57c_pre
703    
704    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
705      update output.txt of exp. global_ocean.90x40x15
706    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
707      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
708    o add saltFlux(+File) forcing capability with periodicExternalForcing
709    o allow to use pkg diagnostics for GM-Redi & ThSIce output
710    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
711    o improvements for the MNC output from DIAGNOSTICS:
712      - correct handling of the unlimitied dimension
713      - all dims now have associated coordinate variables
714      - variables located at U, V, and Corner ("Z") points are now written
715        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
716        *all* data points are output
717    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
718    o added pkg/seaice/seaice_monitor.F
719    o mdsio_readfield.F can now read files visible only to master MPI process.
720    o pkg/seaice: some test code for ice-modified ocean stress
721    o exf_getffields interpolation defaults to bilinear for all scalar forcing
722      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
723      spurious negative numbers for precipitation and humidity.  Will cause
724      some small numerical differences for integrations using pkg/exf/exf_interp.F.
725    o pkg/ctrl/
726      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
727        May be enabled via doPackDiag
728      *  introduce z-scaling of
729         + gradient (doZscalePack) and
730         + control (doZscaleUnpack)
731    o pkg/mdsio/
732      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
733      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
734    
735    checkpoint57b_post
736    o simplify options in diagnostics_fill arguments (remove weird combinations)
737    o fix MNC coordinate variables so that they now contain per-face index
738      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
739      general, EXCH2 grids are only aligned to a "local" coordinate system
740    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
741    o Implement instantaneous output within pkg diagnostics:
742      setting a negative frequency in data.diagnostics produces
743     "snap-shot" output (as opposed to time-average if freq > 0)
744    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
745      NOTE: change ptracer diagnostics name: use 2 characters to work with
746            more than 9 tracers. Add also diagnostics of advect & diffus flux.
747    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
748      becomes the coordinate variable for the 'T' dimension
749    o add CF-style coordinate variables to MNC
750      - just a first cut:  numbers are meaningless on the cubesphere and
751        missing along the T axis but otherwise it works!
752    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
753    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
754    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
755      this is based directly on what the model compute, so that the content of
756      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
757    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
758    o clean up build options files for SunOS, in particular
759      - remove -traditional from xmakedepend
760      - change -xarch=v9 to -xarch=native for f77
761      - restore use of make (not gmake)
762      - add CC=gcc if using g77
763    o changes per discussion of AM, JMC, & EH3 today:
764      - move redundant "grid" variables out of "state" -- in preparation of
765        creating proper CF-style coordinate variables and in recognition
766        that any/all grid variables can be easily copied (eg. w/NCO) from
767        the grid files into any of the other NetCDF files
768      - *always* output grid variables with MDSIO (this will eventually be
769        changed)
770      - output MNC grid file if useMNC is true
771    o every instance of _END_MASTER() has been found and replaced with
772      _END_MASTER( myThid ) in order to satisfy certain picky Sun
773      preprocessors
774    o re-arrange diagnostics pkg initialisation:
775     - allow each package to extend the available diagnostics list
776     - add some checking and fix small problems (multi-threaded, ...)
777     - new S/R diagnostics_fill (replace fill_diagnostics):
778       look through the short list of active diag. (instead of the long list)
779       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
780    
781    checkpoint57a_post
782    o this set of changes restores TAMC compatibility
783      tested for global_ocean.90x40x15 adjoint on trough
784      (what a pain)
785    
786    checkpoint57a_pre
787    o some modifs in tools/build_options for sunos
788    o call ctrl_pack for ctrl at end for optimcycle=0
789    
790    checkpoint57
791    o add horizontal bi-harmonic viscosity for vertical velocity
792      - new parameter viscA4W (defaults to viscA4)
793      - affects only non-hydrostatic code
794      - to be done: no-slip lateral boundary conditions
795    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
796    o implement Implicit Vertical advection for pTracers
797    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
798      (implemented also for implicit vertical diffusion & advection)
799    o OBCS: extend application of tracer open boundary conditions
800      to a strip beyond the boundary of width Olx/Oly
801    o add call monitor to TAF set of required calls (flow directives)
802      and include in natl_box_adjoint
803    o untangle a few ifdefs related to cost, ctrl, autodiff
804      untangel a few ALLOW_ECCO_OPTIMIZATION
805    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
806      (theta2, salt2 in ecco_cost_weights)
807    
808    checkpoint56c_post
809    o OBCS as control variables
810      - update ctrl_ad_diff.list, obcs_ad_diff.list
811      - remove balance of obcs controls from default
812      - fix index bug nobcs in ctrl_init
813      - fix dummy fields filen in ctrl_pack
814      - add dummy weights for obcs
815    o lsopt: comment out fort.94 output
816    o optim:
817      - remove unnecessary header files
818      - adjusted namelists
819      - add xerbla.F to Makefile
820    o exf:
821      - multiple modifications of exf_check_range
822      - unit change in exf_init_runoff from [m/year] to [m/s]
823    o mdsio:
824      - i/o-vector change debugLevel from debLevA to debLevB
825    
826    checkpoint56b_post
827    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
828      is called from DO_THE_MODEL_IO
829      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
830      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
831      - clean up PTRACERS_WRITE_TIMEAVE a little
832    o add another verification experiment that tests both the cfc-pkg and
833      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
834      reactive tendencies treated inline with regular timestepping
835    o testreport previously did a lousy job of comparing small numbers, so
836      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
837      implemented in the little c-progam tmp_cmpnum.c which is embedded in
838      testreport.
839    o ptracers_monitor: bug fix for MPI
840    
841    checkpoint56a_post
842    o GCHEM: finish reorganizating the package
843      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
844        (introduces another 3D-array for each passive tracer, but only if
845        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
846        gchemTendency is not needed because the timestep is done separately)
847      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
848      - GCHEM is now---more or less cleanly---separate from PTRACERS
849      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
850        so clear to me how that should be done in a general way.
851    o CFC: improve formatting of output in CFC_ATMOS
852    o PTRACERS:
853      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
854        that ALL experiments with ptracers enable can be checked. This makes
855        GCHEM_MONITOR obsolete.
856      - include a runtime parameter PTRACERS_monitorFreq that defaults to
857        monitorFreq
858      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
859    o add PTRACERS (PTR0[1-5]) to testreport output
860    o exf_check_range:
861      * default changed to .TRUE.
862      * will check values for niter0 if debLevA, every timestep if debLevB
863      * STOP in exf_check_range if 'out of range'
864      * range chosen generous to allow for potential extema
865      TBD: a version with stricter range
866           permitted range would be runtime parameters
867    o GMredi:
868      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
869      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
870      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
871    o GCHEM:
872      - move call to GCHEM_FORCING_SEP, so that it is now called before
873        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
874      - introduced a useGCHEM runtime flag and applied it everywhere.
875      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
876        this flag is now only visible within GCHEM-pkg routines.
877      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
878        be replaced by a 3D array that is computed before thermodynamics; for
879        this, the tracer ID iTracer had to be included into the parameter list
880        of ptracers_forcing
881      - set up forward_step to call gchem_forcing, that will replace
882        gchem_forcing_int in ptracers_forcing
883      - cleaning up
884    o small cleaning of exch2: remove files that are also in eesupp/src
885    
886    checkpoint56
887    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
888    o mnc: cleanup "full" files--fixes out-of-memory problem
889    o ECCO-GODAE
890      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
891      * fully merged and updated from SIO code
892        windstress sign change affects
893        - exf_inscal_[u/v]stress
894        - sign of xx_tau[u/v] adjustments
895        - signs in cost_scat
896      * ctrl_get_gen: avoid update of tau[u/v] for first few days
897      * natl_box_adjoint updated and compressed
898      * 2-level checkpoint switch added
899        (tested in EXP. 1 of natl_box_adjoint)
900      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
901    o SVD
902      * first complete, non-hacked version for SVD calculations
903      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
904        performed via direct access files admtlm_vector.it????
905        (via ctrl_[un]pack)
906      * optimcycle is used for ARPACK iteration counter
907        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
908      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
909        and add linear transforms where necessary
910      * controls are initial/final SST, SSS (can be extended; need to check
911        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
912    o mdsio: filename info to both stderr, stdout
913    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
914      from sign change
915    
916    checkpoint55j_post
917    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
918      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
919    o add consistent build directories and .cvsignore files to verification
920    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
921    o make all subroutines 30 or less characters in length for certain older
922      compilers to work (a thorough search only turns up two routines in
923      pkg/ptracers)
924    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
925      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
926    
927    checkpoint55i_post
928    o change arrays for total vertical diffusivity (2.D if explicit,
929      3.D if implicit) ; each ptracer uses its own background value.
930    o added mnc/NetCDF output capability to ocn_compon_interf
931      - added bits to verification/cpl_aim+ocn so that it can run on
932        ITRDA and other clusters without the mpirun "-wd" option
933    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
934      configuration
935    o give MNC the ability to create additional files rather than
936      exceeding a specified file size limit "MNC_MAX_FILESIZE"
937      - the default is just less than 2GB which is a practical limit
938        on many systems
939    o Compute the non-local term using either KPP vertical diffusivity (=default)
940       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
941    
942    checkpoint55h_post
943    o add verification test "vermix"
944    o remove all the *_ioinc flags and replace with the single global
945      outputTypesInclusive flag
946    o allow to set a vertical profile of vertical diffusivity for T & S
947    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
948    o useMNC moved from data.mnc to data.pkg
949    
950    checkpoint55g_post
951    o Renaming carbon AD experiments to comply with testreport conventions
952    o Updating adjoint of Held-Suarez hs94.1x64x5
953    o Fixing directives for non-ECCO forward_step, after ECCO directives
954      have been fixed to avoid recomp. of do_oceanic_phys
955      Works well for global_ocean.90x40x15,
956      but recomp. issue remains for carbon
957    o Updating adjoint output for natl_box_adjoint after
958      pkg/ecco has been modified (see taga c55d_post)
959    
960    checkpoint55f_post
961    o rename to timeave_init_fixed
962    
963    checkpoint55e_post
964    o some delicate re-shuffle of store directives to avoid one
965      extra call of do_oceanic_physics
966      affects ecco_the_main_loop.F, do_oceanic_physics.F
967      checkpoint_lev1_directives.h
968    o NB: this may break global_ocean adjoint temporarily,
969      but it is clear how to fix it. Will do later, need this now.
970    
971    checkpoint55d_post
972    o ECCO specific cost function terms (up-to-date with 1x1 runs)
973    o ecco_cost_weights is modified to 1x1 runs
974    o modifs to allow observations to be read in as
975      single file or yearly files
976    o enable to read exf forcing fields as either
977      single file or yearly files (flag useExfYearlyFields)
978    checkpoint55d_pre
979    
980    o switch between 2-level and 3-level checkpointing
981    o add ability of MNC to write local and "partial" (eg. 2D slices where
982      the full 3D field is never actually stored) arrays to NetCDF files
983      with the correct (that is, the complete multi-dimensional) set of
984      array indicies
985      - used in mom_vecinv() to write the diagFreq output
986      - tested (demonstrated) in verification/aim.5l_cs
987    o further mnc-ification
988      - add verification/lab_sea to the list with mnc setups
989      - fix undefined mnc v-names in cd_code
990      - add kpp to mnc output (both snapshot and timeave)
991    o non-hydrostatic code
992      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
993        in calc_gw.F
994      - defaults to viscAh
995      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
996        friction or Leith) in non-hydrostatic mode, as long as there is
997        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
998    o pkg/cost
999      extend simple cost functions to treat time mean quantities
1000      (T,U,V) via cost_accumulate_state from cost_tile
1001    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1002        be 2 times larger than the minimum size the advection scheme requires.
1003        now get a perfect conservation of salt in advect_cs test-exp (updated)
1004    o GGL90 (Gaspar's TKE mixed layer)
1005      - add horizontal diffusion of TKE, requires exchanges in
1006        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1007        default. In OPA there is no horizontal diffusion of TKE but the
1008        mixing coefficients are computed from a horizontal average of TKE of
1009        6 points or so. I think that diffusion has a little more physical
1010        justification.
1011      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1012        was in vain)
1013      - mask tke-variable in ggl90_init
1014    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1015    o fix biharmonic diffusion on CS-grid.
1016    o more obcs stuff
1017      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1018        for reading boundary values. This routine is called from
1019        obcs_prescribe_read
1020      - updated obcs_check
1021      - changed sponge layer relaxation parameter units for days to seconds
1022      - turned off sponge layer by default
1023      - changed argument list of OBCS_CALC to myTime+deltaTclock
1024      - fixed about 35 bugs in obcs_external_fields_load
1025    
1026    checkpoint55c_post
1027    o obcs stuff
1028      - new runtime flags useOBCSprescribe, useOBCSbalance
1029      - re-arranged obcs_calc
1030      - moved exf_getobcs to obcs_prescibe_read
1031        obcs_prescibe_read is called after ORLANSKI stuff
1032        and independent of it (executable can contain all).
1033      - updated obcs_check
1034      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1035        These may be necessary only if tangential velocities are
1036        prescribed at OB, not sure, needs testing.
1037    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1038      which simplifies the calls and passes the ifc check-bounds test
1039    
1040    checkpoint55b_post
1041    o add a 2D scalar, Z location, exchange_2 routine.
1042    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1043      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1044      affects advect_cs results (for the wrong reason): update output.txt
1045    o use a more standard discretization for biharmonic viscosity ;
1046     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1047      affects results of dome set-up: update output.txt
1048    o fix gad_advection.F (CubedSphere part), back to version 1.23
1049    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1050    
1051    checkpoint55a_post
1052    o merged code to
1053      * prescribe/read time-dependent open boundaries
1054        (works in conjunction with exf, cal)
1055      * sponge layer code for open boundaries
1056      * each boundary N/S/E/W now has its own CPP option
1057        (healthy for the adjoint)
1058    
1059    checkpoint55
1060    o up-to-date adjoint of previous breaks
1061      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1062      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1063      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1064      - carbon: * remove tr1-related adjoint verification
1065                * add ptracer as control variable
1066    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1067      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1068    
1069    checkpoint54f_post
1070    o in verification/carbin/ remove experiment related to
1071      ALLOW_PASSIVE_TRACER (array tr1 etc)
1072      code_ad/ input_ad/ results_ad
1073    
1074    o add two new packages
1075      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1076        + subject to optimization (memory)
1077      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1078        + subject to reordering (many GOTOs in the original code)
1079        + so far opps is called for every (i,j) point, and then operates in
1080          the vertical; one may want to reorder the scheme in order operate in
1081          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1082          fields)
1083    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1084      - all verification tests compile and run with linux_ia32_g77
1085      - defaults are compatible with current input files--nothing
1086        should change if you were not previously using MNC
1087      - MNC output has been added in numerous places (eg. timeave)
1088        but there are still a few writes not yet do-able with MNC
1089        (this is in progress)
1090      - flags now allow for either/or/both use of MDSIO and MNC and
1091        documentation will soon follow
1092      - numerous small formatting cleanups for ProTeX
1093    o add version info (via BUILD_INFO.h) to MNC and stdout
1094    
1095    checkpoint54e_post
1096    o add two new packages
1097      - pp81 (Packanowski and Philander, 1981), Richardson number and
1098        stratification dependent mixing
1099      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1100      - these scheme operate in a similar manner as KPP (without ghat, of
1101        course), however there is only one diffusivity that is used for both
1102        temperature and salinity (and passive tracers)ç
1103    o add offline package
1104    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1105      provided by Stephanie Dutkiewicz
1106    o genmake2: add ability to search for C compilers and cleanup test output
1107      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1108    
1109    checkpoint54d_post
1110    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1111    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1112      leading to additional shift by 5 days each year of integration
1113       (i.e. leading to considerable offset over the years)
1114    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1115    o start with no AB and no initial filtering (staggerTimeStep):
1116      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1117    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1118      (external loading & cpl import/export stay in forward_step.F)
1119    o update coupling interface to work with new staggerTimeStep
1120    o change MDSIO ptracers_pickup.
1121    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1122    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1123    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1124    
1125    checkpoint54c_post
1126    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1127      this affects (truncation error) output.txt of test-exp:
1128       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1129    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1130    o change Qnet to always be the net heat flux, (+upward).
1131      affects (truncation error) output of natl_box exp.: updated
1132    o define the max number of passive tracers in PTRACERS_SIZE.h
1133    o start to test mnc routinely in exp0
1134    o add sea-ice loading (sIceLoad) as a new forcing field.
1135    
1136    checkpoint54b_post
1137    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1138       impressive on Altix and Opteron systems)
1139    o diagnostics can now write NetCDF files through the mnc package
1140    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1141    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1142    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1143      affects (truncation error) output of lab_sea & natl_box exp.: updated
1144    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1145    
1146    checkpoint54a_post
1147    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1148    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1149    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1150    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1151      + internal_wave (shift in writing cg2d_ini_res)
1152    checkpoint54a_pre
1153    
1154    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1155      - modified verification/lab_sea and natl_box_adjoint accordingly
1156    
1157    checkpoint54
1158    checkpoint53g_post
1159    o prepare splitting of thermodynamics: store convect.counter in common block
1160    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1161      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1162    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1163    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1164    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1165    o restore adjointability
1166    
1167    checkpoint53f_post
1168    o modifications that affect AIM experiment results (update output.txt):
1169      - no advection of S at top interface Nr (pkg/generic_advdiff)
1170      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1171    o AIM pkg:
1172      - include stability function into surf.Flux derivative relative to Tsurf
1173      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1174    
1175    checkpoint53e_post
1176    o merged cylindrical coord configuration
1177    o added rotating_tank experiment
1178    checkpoint53e_pre
1179    
1180    checkpoint53d_post
1181    o faulks upgraded: re-generate output.txt that have changed:
1182       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1183    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1184    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1185    o added Sadourny discretization of Coriolis
1186      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1187      - re-enabled use of omega3 (useAbsVorticity)
1188    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1189      vector-invariant equations
1190      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1191    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1192      hopefully without new bugs
1193      - still to do: biharmonic friction for non-hydrostatic w
1194    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1195    o regenerated output for global_ocean_ebm (using -ieee)
1196    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1197      of mom_common/
1198      - simple re-arrangement of instructions within computing loop
1199    checkpoint53d_pre
1200    
1201    checkpoint53c_post
1202    o new version of coupler for AIM+thSIce and Ocean models
1203     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1204     - land: change Evaporation of snow
1205     - aim with thSIce: fix bug in snow-precip.
1206    o changes to calc_gw.F
1207     - bug fix for w^2 term near the bottom boundary
1208     - (hopefully) improve the lateral slip boundary condtions for use with
1209        partial/looped cells
1210      - because the bug fix changes two verification experiments anyway (exp5
1211        and plume on slope), change the lateral boundary condition from half slip
1212        to the value of no_slip_sides
1213    o ebm package wasnt quite up to the parallel task. Fixed that.
1214    o Adjoint of EBM package + verification
1215      * TLM OK
1216      * ADM not sufficient accuracy yet (needs further testing)
1217    
1218    checkpoint53b_post
1219    o Commiting new energy balance model to repository
1220      * package is pkg/ebm
1221      * verif. is verification/global_ocean_ebm
1222      * references are in ebm_driver.F
1223    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1224    C        Global thermohaline circulation. Part I:
1225    C        Sensitivity to atmospheric moisture transport.
1226    C        J. Climate 12(1), 71-82
1227    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1228    C        Global thermohaline circulation. Part II:
1229    C        Sensitivity with interactive transport.
1230    C        J. Climate 12(1), 83-91
1231    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1232    C        Destabilization of the thermohaline circulation
1233    C        by atmospheric eddy transports.
1234    C        J. Climate 7(12), 1870-1882
1235    o Will need long integration testing.
1236    checkpoint53b_pre
1237    
1238    o created pkg/mom_common in preparation for variable viscosity code
1239    o renamed and split ini_mnc_io
1240    o pkg/land: only liquid water can diffuse or run-off
1241    o AIM using land: soil wetness availability account for snow
1242    o added printMapIncludesZeros to EEPARMS namelist
1243    
1244    checkpoint53a_post
1245    o restore TAMC compatiility for exf_constants.h
1246      (no usage of _d in .h)
1247    o Additional storing in KPP in an attempt to fix
1248      TAMC problem with adjoint of KPP code.
1249      (no success...)
1250      Identical code works fine with TAF.
1251    o Fixed verification/natl_box_adjoint experiments.
1252      Initial conditions for Experiments 4 and 5 are now
1253      set to "SEAICE_initialHEFF=0", which is more reasonable,
1254      and hence gives results closer to that of Experiment 2.
1255      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1256    
1257    checkpoint53
1258    o stable checkpoint with up to date adjoint
1259      TLM tests only run for 1st grdchk at the moment. Its unclear if
1260      this is a code problem or a problem with resetting code for g_
1261      variables that is being autogenerated wrong.
1262      Otherwise:
1263       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1264       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1265         are both still in chaos following their security messes.
1266    
1267    checkpoint52n_post
1268    o various build (mostly genmake2) changes including:
1269      - ability to build/run more easily within Cygwin and MacOS X
1270      - more complicated Makefiles with a stronger dependence on Gnu Make
1271    o pkg/seaice modifications
1272      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1273        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1274        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1275      - changed proxy for geostrophic velocity and updated
1276        verification/lab_sea/results/* accordingly
1277      - removed ADI dynamic solver from pkg/seaice
1278      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1279        they caused a segmentation fault under certain circumstances
1280      - removed unused field WATR
1281    o bug fix in exf-package:
1282      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1283         now reflect that.
1284    o small fixes in the cal-package:
1285      - set reference date to first of January for the 'model'-calendar
1286      - failing of cal_CheckDate in cal_FullDate now actually results in a
1287        warning
1288    o small modifications in exf-package to increase flexibility:
1289      - change climtempfreeze from a constant to a runtime parameter that
1290        is specified in data.exf_clim (default = -1.9)
1291      - introduce runtime parameter windstressmax (default = 2.0) that is
1292        specified in data.exf
1293    o fix in pkg/thsice:
1294      - update Evap (Tsf changes) to be consistent with Latent heat flux
1295      - maintain snow precipitation unchanged (even if Tsf >=0).
1296     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1297    
1298    checkpoint52m_post
1299    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1300      this does not change any of the results, because myIter=0 in swfrac always
1301      lead to jwtype=2 (the default anyway), but the call makes little sense
1302      as a default
1303    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1304    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1305      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1306    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1307    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1308    o extending useSingleCpuIO option to work with new exch2 I/O format
1309      - old-style, missing-tile I/O is still accessible by defining CPP
1310        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1311    o monitor package can write to NetCDF files and/or STDOUT
1312    o fix re-definition bug in MNC_GRID_INIT_ALL()
1313    o doc/api_reference added
1314      - a framework for building an API Reference Manual using all
1315        the "protex" comments embedded in the code
1316      - see pkg/generic_advdiff, pkg/mnc for examples
1317    o MNC:
1318      - make myThid the last argument for all subroutines
1319      - new default for the grid files: NO halos
1320      - add useMNC and other run-time flags
1321      - separate per-file-group handling of the unlimited dimension
1322      - early initialization of MNC w/ flags read at the eeboot stage
1323        and lookup tables set in initialize_fixed
1324      - write all MNC output to a freshly-created directory
1325    o thermodynamics sea-ice (thsice) is now tested with testreport.
1326    o test exp. advect_cs: use the standard cs32 grid ; update output.
1327    o Added functionality to grdchk:
1328      pick global i,j,k position (or nearest wet) where to perform check.
1329    
1330    checkpoint52l_post
1331    o new land formulation:
1332      a) use ground enthalpy as prognostic variable to ensure exact
1333         energy conservation.
1334      b) account for water temperature and for latent heat of freezing
1335         in all processes (rain, run-off, ground storage)
1336      c) compute surface and ground temperature implicitly.
1337    o aim_v23 modification for new land model:
1338      a) Treat separately land / ocean / sea-ice surface fluxes
1339         to allow implicit computation of land & sea-ice surface temp.
1340      b) add snow precipitation.
1341    checkpoint52l_pre
1342    
1343    o fix problem (when 1 tile is empty) in min/max monitor.
1344    o fix bug in timeAve (u,vZetatave in common block)
1345    o no restoring terms under ice for pkg/seaice
1346    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1347    o bug fix for pkg/seaice pickups
1348    o change MNC call locations and add coordinate attributes
1349    o mask vorticity at the corner ; affects global_ocean.cs output
1350    o fix ini_curvilinear_grid ; test CS experiments with mpi
1351    o aim.5l_cs: modify sea-ice fraction input file ; update output
1352    o exf: Adding simple range check routine for exf fields after read
1353    
1354    checkpoint52k_post
1355    o removed top-level directory "diags"
1356      - we migrated these functions to pkg/timeave a long time ago
1357    o fixed bug introduced in pkg/monitor
1358    o accuracy ctrlprec = 32 insuffient for gradient checks using
1359      averaged fields (I/O via cost_averages)
1360      -> use ctrl.h in active_file*.F to control I/O precision.
1361    o paramter list of CALL ADTHE_MAIN_LOOP
1362    o added initial do_the_model_io to ecco
1363    o set all ...Freq to zero after cost_final
1364      taveFreq, dumpFreq, pChkptFreq
1365    o MAIN and ECCO differentiability restored
1366    
1367    checkpoint52j_post
1368    o fix nchklev in tamc.h for global_ocean...
1369    o Bringing flow and store directives up-to-date
1370    o Really weird thing!
1371      call do_the_model_io from the_main_loop with parameters
1372      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1373      TAF places a faulty re-call of initialise_varia
1374      after cost_final call which should not be there!
1375    checkpoint52j_pre
1376    
1377    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1378      error messages
1379    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1380    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1381      debug output
1382    o modfied mdsio_writefield.F to handle non-global files under exch2
1383    o update AIM Cubed-Sphere exp (aim.5l_cs):
1384      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1385    o update AIM Equatorial Channel exp:
1386      use standard aim_v23 pkg and change the SST fields to be more realistic.
1387    o globalFile now works with exch2
1388    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1389      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1390    o limit timeave output for hi-res integrations
1391    
1392    checkpoint52i_post
1393    o removed CPP_EEOPTIONS.h from verification/*/code
1394    o updated the tiling for global_ocean_pressure
1395    checkpoint52i_pre
1396    
1397    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1398      the old pkg/aim).
1399    
1400    checkpoint52h_pre
1401    o shortened offending lines in exch2_send_rx?.template
1402    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1403    o genmake2: add build & execute test for NetCDF code
1404    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1405      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1406    o added useSingleCPUIO flag to monitor.F and mon_out.F
1407    o added temporary hack for sea-ice dynamics on the cube:
1408      metric terms are ignored and it is assumed that
1409      there is no sea-ice on cube faces 1, 2, 4, and 5.
1410    
1411    checkpoint52f_post
1412    o added exch2 cube routines to pkg/exch2
1413    o modified hs94.cs-32x32x5 to use it
1414    o added new grid files to hs94.cs-32x32x5
1415    checkpoint52f_pre
1416    
1417    checkpoint52e_post
1418    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1419      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1420    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1421      to work with implicit vertical advection and AB ;
1422    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1423    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1424     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1425    checkpoint52e_pre
1426    
1427    o fix bug in impldiff when Nr=1 or Nr=2.
1428    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1429    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1430    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1431      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1432    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1433    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1434    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1435    
1436    checkpoint52d_post
1437    o re-tiled many expts to allow comparison in multi-processor mode
1438      - updated output accordingly
1439      - changed hs94.128x64x5 to use intial T from file rather than use the
1440        random number generator
1441    o add infrastructure in model routines for fizhi and gridalt packages
1442    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1443    o changes to permit hi-res, cubed-sphere, configuration
1444      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1445      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1446      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1447        of surface winds for the cube
1448      (A verification experiment, based on global_ocean.cs32x15, but with
1449       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1450       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1451       complete with example surface forcing files and matlab scripts to look
1452       at the output and compare it with that of global_ocean.cs32x15.)
1453    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1454       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1455       to conform to the common rule.
1456    o check-in the first version of the coupler + interfaces for multi-components
1457       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1458       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1459       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1460       - ocean and atmos. share the same horizontal grid (no interpolation).
1461       - exchanges between component and coupler is done in forward_step
1462    o new verification experiment, cpl_aim+ocn:
1463       coupled ocean - AIM atmosphere on cs32 grid.
1464    
1465    checkpoint52d_pre
1466    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1467    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1468    
1469    checkpoint52c_post
1470    o Fixing OPTIONS files for use of exf:
1471      - ALLOW_ECCO not needed
1472      - ECCO_CPPOPTIONS.h should not be included from
1473        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1474        as has been the case in the past
1475      - All cal/exf related options are currently set in
1476        single header file. Should remain so until we
1477        agree on a consistent new policy.
1478    o Removed all CPP options for cal package.
1479      cal has no more CPP options.
1480    o modified STOREs in GAD_ADVECTION
1481    o corrected key comp. for passkey
1482    
1483    checkpoint52b_post
1484    o new version: "thsice" of thermodynamic sea-ice pkg:
1485     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1486     - modify fluxes but do not change theta directly;
1487     - light cleaning of bulk_force pkg (still needed with thsice).
1488     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1489       + output_thsice.txt to test thsice & bulk_force pkgs.
1490    o put back grid & coriolis monitor output.
1491    checkpoint52b_pre
1492    
1493    o call "do_the_model_io" at the beginning (=> dump initial state)
1494    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1495    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1496      (need info on NUMBER_OF_PTRACERS)
1497    o missing PTRACERS headers in some routines
1498    o default tamc.h in pkg/autodiff supposed to crash
1499      to ensure proper customization
1500    
1501    checkpoint52a_post
1502    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1503      - moved surfaceTendencyTice from pkg/seaice to main code
1504      - subroutine FREEZE_SURFACE now limits only surface temperature
1505        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1506        => new output.txt for global_ocean.cs32x15 & global_with_exf
1507      - keep the old version of FREEZE for backward compatibility;
1508        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1509      - corresponding modifs for TAF directives
1510    o added surface flux output variables to TIMEAVE_STATVARS
1511    o time-averaged output for pkg/ptracers
1512    o fix problem with ECCO-related divided adjoint
1513      snapshot file was missing some ad-variables,
1514      but no warning issued by TAF
1515    
1516    checkpoint52a_pre
1517    o some bug fixes for #undef REAL4_IS_SLOW
1518    
1519    checkpoint52 = ecco_c52_e35
1520    o after testing adjoints of checkpoint51u_post
1521    
1522    checkpoint51u_post
1523    o this is the post-merge tag of the ecco-branch
1524      (needs another clean checkout and re-testing)
1525    o various natl_box_adjoint configs and results
1526      but no input fields
1527    o obcs adjoint not yet merged!
1528    o adding ECCO global 1x1 and 2x2 degree configs
1529    o updated/extended some store directives for seaice
1530    o pkg/ecco now containes ecco-specific part of cost function
1531    o top level routines the_main_loop, forward_step
1532      supersede those in model/src/
1533      previous input data.cost now in data.ecco
1534      (new namelist ecco_cost_nml)
1535    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1536    
1537    checkpoint51t_post
1538    o this is the pre-merge tag of the ecco-branch
1539    
1540    checkpoint51s_post
1541    o cleanup: removed various obsolete #define-s
1542    o pkg/grdchk
1543      - renamed 'ph-grd 3' to 'grad-res'
1544      - merged from ecco-branch
1545        (remaining bug fixes for obcs gradient checks)
1546      - additional high-precision output for testreport
1547        (grep for 'precision_grdchk_result')
1548    
1549    checkpoint51r_post
1550    o cleaned up or removed CPP_OPTIONS.h files
1551    o updated results for some of the tests to reflect the new
1552      optfiles (-ieee: -O0 instead of -O3)
1553    
1554    checkpoint51q_post
1555    o cd_code:
1556      - moved cd_scheme.F -> cd_code_scheme.F
1557      - separate read_checkpoint from cd_code_ini_vars.F
1558      - separated cd_code part from write_checkpoint
1559      - updated AD_SOURCE, generated .flow
1560      - added CD_CODE_VARS.h to the_main_loop
1561      - Moving cd_code specific store dir.s to pkg/cd_code
1562    o ctrl package totally restructured
1563      - pack/unpack now optional and decoupled from
1564        xx_/adxx_ I/O
1565      - ctrl_pack/unpack cleaned
1566        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1567      - confined inclusion of AD_CONFIG.h to where necessary.
1568    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1569    
1570    checkpoint51p_post
1571    o create initial cd_code package
1572      - WARNING: the initialization of fields within packages
1573        is broken because INI_FIELDS (where READ_CHECKPOINT is
1574        called) is called *before* PACKAGES_INIT_VARIABLES.
1575        This seems to be backwards since
1576        1) its important to initially zero the entire field including
1577           the "halo" region
1578        2) zeroing needs to be done *before* reading pickup info
1579           and the pickup call might or might not happen in any
1580           particular run
1581      - this needs an overhaul for R2
1582    o cleanup verification/*/code/GMREDI_OPTIONS.h
1583    o cleanup testreport
1584    
1585    checkpoint51o_post
1586    o bringing AD-related verif's up to date with genmake2
1587      - carbon/
1588      - global_ocean.90x40x15/
1589      - hs.94.1x64x5/
1590      - (front_relax/ )
1591    o (more) consistent directory structure for AD-related verif.'s
1592    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1593    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1594    o bug fix in find_alpha.F for MDJWF:
1595      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1596        change rho -> rho-rhoConst
1597      - replace call find_rho to find_rhonum
1598    o initialisation of rFlx extended to full array (required by TAF)
1599      and shifted to thermodynamics
1600    o removed PTRACERS.h in ptracers routine
1601    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1602    o Correcting initialisations for fVerU, fVerV.
1603    o helping TAF to recognize dependency on kUp for
1604      fVerU, fVerV
1605    o Replacing delZ by delR in pkg/ctrl/
1606    checkpoint51o_pre
1607    
1608    o undid all of cp51 pending some cleanups and discussion
1609    o added the [#include "AD_CONFIG.h"] statement to all files that need
1610       it for adjoint/tl #defines
1611     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1612     o removed tools/genmake since it no longer works
1613    
1614    checkpoint51n_post
1615    o modifications to make FREEZE flux visible to pkg/kpp
1616      - moved surfaceTendencyTice from pkg/seaice to main code
1617      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1618      - subroutine FREEZE now limits only surface temperature
1619        (this means new output.txt for global_ocean.90x40x15,
1620         global_ocean.cs32x15, and global_with_exf)
1621    o added surface flux output variables to TIMEAVE_STATVARS
1622    
1623    checkpoint51n_pre
1624    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1625    o added [#include "AD_CONFIG.h"] to all files that use the following
1626      defines:
1627      - ALLOW_ADJOINT_RUN
1628      - ALLOW_TANGENTLINEAR_RUN
1629      - ALLOW_ECCO_OPTIMIZATION
1630    
1631    checkpoint51m_post
1632    o incorporating changes to get TAMC/TAF working in genmake2
1633      - added new TAMC/TAF targets to the Makefile
1634      - various cleanups related to package handling
1635      - these changes should have no impact on the forward model
1636    
1637    checkpoint51l_post
1638    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1639     - faster algorithm for cal_addtime.F
1640     - higher precision arithmetic, where needed
1641     - pkg/exf *startdate variables changed from calendar date to
1642       model integration time
1643    
1644    checkpoint51l_pre
1645    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1646    o enable to apply restoring on S & T only in a latitude band.
1647    o update output (external_forcing_surf modif. change truncation errors)
1648       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1649    
1650    checkpoint51k_post
1651    o change default to: useNHMTerms=.FALSE.
1652     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1653       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1654     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1655        exp1, ideal_2D_oce
1656     - change data file of oceanic exp (leave the results unchanged for now)
1657       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1658    o set gravitySign automatically according to the vertical coordinate used
1659      (and change sign: back to "logical" value: +1 when R increases downward)
1660    o added an include barrier to the default CPP_OPTIONS.h and
1661      removed the #include "PACKAGES_CONFIG.h" from it
1662    o fix a bug in mom_fluxform (from chk51j_post)
1663    
1664    checkpoint51j_post
1665    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1666    o adjusted some flow directives (dynamics, thermodynamics)
1667    o added cubed-sphere case to test cost function
1668    o heckpoint_lev?_directives.h now include
1669      pkg-specific directives, whenever those are enabled.
1670    o Moving pkg-specific flow directives to corresponding pkg
1671      Moving pkg-specific differentiation list to corresponding pkg
1672      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1673      ---> conventions are
1674           - pkg_ad.flow
1675           - pkg_ad_diff.list
1676           - pkg_ad_check_lev?_dir.h
1677    
1678    checkpoint51i_post
1679    o merge of the branch-genmake2
1680      - knowingly breaks the older genmake
1681      - automatic generation of all ALLOW_${PKG_NAME} defines
1682      - new testreport supersedes older testscript
1683    o large number of package inclusion and header cleanups
1684    checkpoint51i_pre
1685    
1686    o new output for adjoin of global ocean vector invariant
1687    o fix for checkpoint of thermodynamic seaice and bulk_force
1688    o Steph gchem various cleanups
1689    
1690    checkpoint 51h_pre
1691    o fixed some single quotes
1692    o modify gchem pkg to be more versatile
1693    o modifications to clean up dic pkg
1694    o add pkg/cfc
1695    
1696    checkpoint51g_post
1697    o provide links for ARPACK and ADM*TLM
1698    o start removing verification/vero/
1699    o update AD-related stuff
1700      (in particular some IF-statements in model/src/ routines)
1701    o adding to verification/global_ocean.90x40x15/ adjoint of
1702      vector invariant setup
1703    
1704    checkpoint51f_post
1705    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1706    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1707      of tracer Green's fucntions for ocean inversion project.
1708    
1709    checkpoint51f_pre
1710    o Added on-the-fly spatial interpolation capability
1711        "USE_EXF_INTERPOLATION" to pkg/exf.
1712      - This is a temporary Cartesian-grid hack until
1713        the super-duper ESMF coupler becomes available.
1714      - See verification/global_with_exf/README for usage example.
1715      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1716        flags and modified pkg/seaice accordingly.
1717    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1718        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1719        non-local transport term.
1720    
1721    checkpoint51e_post
1722    o pkg/mom_vecinv:
1723      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1724      - add time-ave diagnostic of vorticity advection.
1725    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1726    o atmospheric geopotential: - include water vapor effect;
1727                                - use p^kappa in p* scaling.
1728    o land pkg: read initial state from files.
1729    o AIM : add stratospheric drag in the upper level
1730    
1731    checkpoint51d_post
1732    o change function ILNBLNK (=> last non-blank char.) to return zero
1733      (instead of the string length) when the string. char is empty
1734    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1735    o modif's to restore TAMC compatibility
1736      - avoid "_d" constructs in PARAMETER declarations
1737      - avoid interrupting lines by comment lines
1738    o Use cluster local disks for purely local I/O
1739      vs. globally visible disks needed for ctrl stuff
1740      (merged from ecco-branch)
1741      - new active_file_loc... and mdsio_..._loc routines
1742      - affected packages: autodiff, ctrl, grdchk, mdsio
1743    
1744    checkpoint51c_post
1745    o introducing integer flag debugLevel
1746      - debLevZero: suppress all output
1747      - debLevA: standard
1748      - debLevB: equivalent to current debugMode=.TRUE.
1749    o introducing pathname variable mdsioLocalDir for mdsio
1750      that can be specified at runtime
1751      (relevant for cluster I/O to local disk)
1752    `
1753    >>>checkpoint51b_post
1754    adjoint of ptracers
1755    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1756    o extended state in checkpoint_lev?, etc.
1757    o alternative ctrl/cost with tr1 or ptracer
1758    o new comlev1_bibj_ptracers
1759    o new ptracers.flow
1760    o made ptracers_forcing same as external_forcing_s
1761    o added verification for adjoint with ptracers
1762      - adm. grdchk fail so far
1763      - tlm. grdchk OK
1764      - checked tapelev/comlev recomputations: OK
1765    <<<checkpoint51b_pre
1766    
1767    checkpoint51a_post
1768    o added code for biogeochemistry package
1769      - new pkgs: dic, gchem
1770      - new subroutine in ptracers
1771    o modify code for biogeo packages
1772      - in model/src and pkg/ptracers
1773    
1774    checkpoint51
1775    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1776      - autodiff, ctrl, exf, grdchk, seaice
1777      kept separate packages
1778      - cost, ecco, obcs
1779    o updating verification/internal_wave, verification/lab_sea
1780      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1781    
1782    checkpoint50i_post
1783    o Preparing next differentiable checkpoint and sync
1784      of MAIN vs. ecco-branch
1785      - 1st step: this one is differentiable
1786      - 2nd step: next(! not this) checkpoint will have updated packages
1787                  from ecco-branch)
1788    
1789    checkpoint50h_post
1790    o new package "land": provide surface BC for AIM.
1791    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1792    o AIM: use true log-P extrapolation for near surface temp (= as in
1793        F.Molteni paper) ; update aim.5l_cs output.
1794    o New variable in PARM03 for more flexible pickups
1795    o somewhat cleaned package initialisation sequence for
1796      ctrl/ cost/ ecco/ in packages_... routines
1797    
1798    checkpoint50g_post
1799    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1800      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1801      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1802        made the default because of faster convergence than ADI
1803    
1804    checkpoint50f_post
1805    o exf totally restructured
1806      - replaced all exf_set_ routines by one generic exf_set_gen.F
1807        and made sure it's still differentiable
1808      - split exf_getffields.F into new exf_bulkformulae.F
1809      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1810      - updated adjoint/makefile and relevant verif. accordingly
1811    
1812    checkpoint50f_pre
1813     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1814          + change Evap over land. (update aim.5l_cs output)
1815     o added missing .cvsignores and made uniform across expts
1816     o changed configuration of tidal_basin_2d expt
1817     o added pkg/debug functions for tracing code in fatal crashes
1818     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1819     o new fn in pkg/monitor to stop model if solution grows too big
1820     o removed lots of single quotes from comments
1821    
1822    checkpoint50e_post
1823    o make KPP work with PTRACERS
1824     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1825       nearly a copy of kpp_transport_s
1826     - there is no analogue to SurfaceTendencyS, so I have to use
1827       gPtr(of the surface layer) instead
1828    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1829    checkpoint50e_pre
1830    
1831    checkpoint50d_post
1832    o change kpp output from multiple-record state files to single-record state
1833      files analogous to write_state.F
1834    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1835      analogous to the cg2d-related output.
1836    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1837      so that writing to internal file fn (with length 512) fails.
1838    checkpoint50d_pre
1839    
1840    checkpoint50c_post
1841    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1842    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1843    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1844    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1845    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1846    
1847    checkpoint50c_pre
1848    Merging from release1_p13:
1849    o bug fix for pkg/seaice dynamic solver
1850    o Added SEAICE_initialHEFF to pkg/seaice
1851    
1852    checkpoint50b_post
1853    o store u*,v* in gU,V instead of in guNm1,gvNm1
1854    o in order to put the momForcing out of the Adams-Bashforth:
1855      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1856      to timestep.F
1857    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1858    o re-generate output for highly sensitive test-exp:
1859       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1860    
1861    checkpoint50b_pre
1862    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1863    o corrected CPP option mismatch in exf_Bulk... functions for case
1864      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1865    
1866    checkpoint50a_post
1867    o Bug fix for merging between c50 and KPP.
1868      ikey was passed from thermodynamics to kpp_calc via
1869      common block rather than being recomputed in kpp_calc,
1870      in contradiction with new key itdkey.
1871      New key ikppkey created, and tamc.h headers updated.
1872    
1873    checkpoint50
1874    - 2nd step of merge with ecco-branch:
1875      merge changes in ecco-branch back into main trunk
1876    - bug fix in find_alpha
1877    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1878    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1879    - merged some sliced AD support routines
1880    
1881    checkpoint49
1882    merged from ecco-branch:
1883    o exf:
1884      - Enable initialisation of forcing fields to constant
1885        (runtime) values.
1886      - in exf_getffields.F
1887        Reduce i-/j-loop to interior domain, discarding overlaps.
1888        That also fixes wrong TAF-key computations for key_1, key_2
1889        with bulf formulae.
1890      - exf_init.F modify #ifdef for exf_init_evap
1891      - exf_getffieldrec.F, ctrl_getrec.F
1892        The following INT-usages are not safe:
1893          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1894          fldcount = int(fldsecs/fldperiod) + 1
1895        and were modified.
1896    o autodiff: checkpoint_lev...
1897      - updated storing for bulk formulae (some arrays were missing)
1898      - added state for seaice package
1899      - synchronized with main branch
1900    o DIVA:
1901      Modif.s in
1902      - the_main_loop.F
1903      - the_model_main.F
1904      and added cost_final_restore.F cost_final_store.F
1905      o With these changes, it is possible to fully separate
1906        the first forward run to compute the cost function (mdthe_main_loop)
1907        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1908        into separate model executions.
1909        This enables better tuning of DIVA to given queue sizes.
1910      o Loss of cost function value in consecutive DIVA runs is
1911        fixed by storing to 'costfinal' file.
1912      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1913        beginning/end of adjoint integration is accounted for.
1914      The current changes apply to TAF-1.4.26.
1915      TAF has one remaining bug, requiring one manual change
1916      (see MITgcm manual).
1917    o cal: synchronized between MAIN and ecco-branch
1918    
1919    checkpoint48i_post
1920    o Changes to restore differentiability of code w.r.t. previous tag
1921      (mostly adding new routines to make list and replacing
1922      pressure by totPhiHyd).
1923    o Updated and merged grdchk package
1924      - has both ADM and TLM checks
1925      - works for single- and multi-proc.
1926      - output cleaned
1927      - worked successfully for parallel DIVA
1928    o genmake:
1929      - Adding -platform=SP4
1930      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1931    o Modif. for DIVA:
1932      ctrl_unpack should not be called in intermediate DIVA interval.
1933      (similar thing would apply for active files such as
1934      tbar, sbar, psbar, which should not be reinitialised;
1935      only relevant for ecco-branch)
1936    
1937    checkpoint48h_post
1938    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1939    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1940    o Added SEAICE_initialHEFF to pkg/seaice
1941    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1942    
1943    checkpoint48g_post
1944    --- EOS:
1945    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1946      store total Potential in totPhyHyd for diagnostics & EOS.
1947    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1948    --- Pressure/geopotential gradient:
1949    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1950    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1951      ( changes results of global_ocean_pressure )
1952    o NLFS + z-coord.: add eta*Rho' contribution.
1953    o accurate phiHyd when using interface-W at the middle between 2 centers
1954     ( changes results of ideal_2D_oce )
1955    o includes r* 2nd term in potential gradient.
1956    
1957    checkpoint48f_post
1958    Merging from release1_p12:
1959    o Modifications for using pkg/exf with pkg/seaice
1960      - improved description of the various forcing configurations
1961      - added basic radiation bulk formulae to pkg/exf
1962      - units/sign fix for evap computation in exf_getffields.F
1963      - updated verification/global_with_exf/results/output.txt
1964    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1965      (SBO) core products, including oceanic mass, center-of-mass,
1966      angular, and bottom pressure (see pkg/sbo/README.sbo).
1967    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1968      to avoid negative values in shallow regions.
1969      - updated verification/natl_box/results/output.txt
1970      - updated verification/lab_sea/results/output.txt
1971    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1972    o Added useSingleCpuIO option (see PARAMS.h).
1973    o Updated useSingleCpuIO option in mdsio_writefield.F to
1974      work with multi-field files, e.g., for single-file pickup.
1975    o pkg/seaice:
1976      - bug fix in growth.F: QNET for no shortwave case
1977      - added HeffFile for specifying initial sea-ice thickness
1978      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1979    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1980      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1981    o pkg/seaice:
1982      - adjoint-friendly modifications
1983      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1984    
1985    checkpoint48e_post
1986    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1987    o dynamics: change definition of computational domain & adapt mom_fluxform
1988      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1989    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1990        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1991        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1992        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1993        inverted_barometer solid-body.cs-32x32x1
1994      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1995    
1996    checkpoint48d_post
1997    o in preparation for r*:
1998     a) use pre-computed gradient of hydrostatic potential:
1999        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2000     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2001        => affects results of glob_oce_pressure (different truncation error)  
2002      update output.txt of ideal_2D_oce & global_ocean_pressure
2003    
2004    checkpoint48d_pre
2005    o in preparation for r*:
2006      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2007      pass the 2 comp. of the grad. as arguments to momentum S/R.
2008      but for the moment, only used if it does not change the results.
2009    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2010    
2011    checkpoint48c_post
2012    Modifications in treatment of initial flux forcing controls
2013    to avoid extra storing of flux fields.
2014    
2015    checkpoint48c_pre
2016    o Added tidal_basin_2d experiment (currently 1D!)
2017    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2018    
2019    checkpoint48b_post
2020    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2021     (modification to pressure gradient not yet implemented)
2022    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2023      (for U & V) that are used for vertical advection of momentum.
2024    
2025    checkpoint48a_post
2026    o In preparation for r*, use temp. array to compute vertical transport
2027       in flux-form momentum pkg. => change results of few test-exp.
2028      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2029                        lab_sea, natl_box & plume_on_slope
2030    
2031    checkpoint48
2032    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2033    
2034    checkpoint47j_post
2035    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2036    o moved adexch from forward_step to addummy_in_stepping
2037    o added exch in ctrl_map_...
2038    o aveFreq.=0. at end of cost_final to avoid overwrite in
2039      reverse checkpointing loop
2040    o Yet more changes in gmredi:
2041      * adgmredi_calc_tensor
2042        avoiding all recomputation of gmredi_slope_limit
2043      * adgmredi_x/y/rtransport
2044        added flag for excessive storing to avoid recomp. of
2045        u/v/rtans, dTdx/y/z
2046        -> this is not really necessary and very memory-consuming
2047      * adgmredi_slope_psi:
2048        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2049      * gmredi_slope_limit
2050        re-activated full calculation of taperfct for case 'ac02'
2051    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2052    
2053    checkpoint47i_post
2054    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2055    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2056      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2057    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2058    o gmredi: fix few bugs.
2059    
2060    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2061    This will be a good checkpoint to plug into the ecco-branch.
2062    o few modif.'s to get latest version adjointed
2063      (mainly kick out code in ini_linear_phisurf)
2064    o modif's to run adjoint with exactConserv
2065    o case GM_BOLUS_ADVEC should be cleaned
2066      S/R gmredi_slope_psi should be cleaned
2067    o verification/carbon now has exactConserv=.TRUE.
2068    
2069    checkpoint47g_post
2070    o time-average AIM output: becomes independent from statvars time-average
2071      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2072    o After TAF bug fix:
2073      Tested adjoint of gmredi package.
2074      Tests were done with checkpoint47 rather than with latest
2075      checkpoint47f_post since the latter is broken for the adjoint
2076      verification/carbon/ contains both ADM and TLM gradient checks.
2077    Here they are, before they get changed/lost/stolen.
2078    Mostly modif.'s to fix numerical sensitivities.
2079    Gradient checks OK for
2080    - GM_taper_scheme:
2081      * clipping
2082      * ac02
2083      * linear
2084      * glw91
2085      * dm95
2086      * ldd97
2087    - GMREDI_OPTIONS:
2088      * GM_VISBECK_VARIABLE_K
2089      * GM_NON_UNITY_DIAGONAL
2090      * GM_EXTRA_DIAGONAL
2091      * GM_BOLUS_ADVEC
2092    in conjunction with data.gmredi parameters to be checked in
2093    in a few minutes under verification/carbon/code/
2094    
2095    checkpoint47f_post
2096    Merging from release1_p10:
2097    o modifications for using pkg/exf with pkg/seaice
2098      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2099        and SEAICE_EXTERNAL_FLUXES
2100      - pkg/exf CPP options EXF_READ_EVAP and
2101        EXF_NO_BULK_COMPUTATIONS
2102      - usage examples are Experiments 8 and 9 in
2103        verification/lab_sea/README
2104      - verification/lab_sea default experiment now uses
2105        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2106    
2107    checkpoint47e_post
2108    o created a tag prior to creating a branch
2109    
2110    checkpoint47d_post
2111    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2112      at the bottom boundary had an erroneous half slip boundary condition
2113    o added bottom drag and no slip boundary condition capabilities to
2114      oceanic pressure coordinates code
2115    o added new verification experiment global_ocean_pressure, this experiment is
2116      also described in the tutorial section of the manual
2117    checkpoint47d_pre
2118    
2119    checkpoint47c_post
2120    o Added a verification experiment for a global cubed-sphere ocean run
2121      -  verification/global_ocean.cubed32x32x30
2122      -  uses pkg/therm_seaice and pkg/bulk_forcing
2123    
2124    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2125    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2126      when using P-coordinate; only implemented for atmospheric config.
2127    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2128      NOTES: requires option NONLIN_FRSURF to be "#define".
2129    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2130    
2131    checkpoint47b_post
2132    Merging from release1_p9:
2133    o pkg/seaice
2134      - removed GOTO's and added taf directives
2135      - double precision constants to reduce the g77 (Linux)
2136        to F77 (SGI) differences reported in release1_p8
2137    o tools/genmake
2138      - added SGI options
2139    o verification/testscript
2140      - updated to that of checkpoint47a_post
2141    o verification/global_ocean.90x40x15/input/eedata
2142      - modified for SGI f77 compatibility
2143    o verification/lab_sea
2144      - added description of sea-ice model
2145      - added missing matlab routines
2146      - added test of thermodynamics parallelization
2147    
2148    checkpoint47a_post
2149    o new pkg: aim_v23
2150     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2151       for now, keep the same surface forcing as before.
2152     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2153     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2154     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2155    o add diagnostic of surface correction term in monitor output
2156    
2157    o bulk_force and therm_seaice
2158    - Two packages:  bulk_force (Bulk forcing)
2159      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2160    - Earlier integration from Stephaine Dutkiewicz
2161      and Patrick Heimbach.
2162    - Two ifdef statements for compile time,
2163       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2164    
2165    checkpoint47
2166    differentiable version of checkpoint46n_post
2167    o bug fix in quasihydrostaticterms
2168    o * "clean" adjoint code (in terms of extensive recomputations)
2169        can now be obtained for all GMREDI options (i.e. for
2170        - GM_VISBECK_VARIABLE_K
2171        - GM_NON_UNITY_DIAGONAL
2172        - GM_EXTRA_DIAGONAL
2173        - GM_BOLUS_ADVEC )
2174      * However, wrong gradient check problem remains unsolved.
2175      * New CPP options have been introduced for different
2176        tapering schemes
2177    o external_fields_load now part of differentiation list
2178    o pressure needs multiple storing;
2179      would be nice to have store_pressure at beginning or
2180      end of forward_step, e.g. by having phiHyd global (5-dim.)
2181      (NB: pressure is needed for certain cases in find_rho,
2182      which is also invoked through convective_adjustment).
2183    o recomputations in find_rho for cases
2184     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2185    o #define ATMOSPHERIC_LOADING should be differentiable
2186    o ini_forcing shifted to begining of initialise_varia
2187    o Incorporating QNVS line search routines into MITgcm
2188      (this is separate code, and therefore not under pkg)
2189      lsopt/, optim/
2190    o Updated verification/carbon/
2191      - #define GM_VISBECK_VARIABLE_K
2192      - GM_taper_scheme    = 'ldd97'    
2193    
2194    checkpoint46n_post
2195    Merging from release1_p8:
2196    o verification/natl_box:
2197      updating new external_fields_load routine
2198    o New package: pkg/seaice
2199      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2200      The sea-ice code is based on Hibler (1979-1980).
2201      Two sea-ice dynamic solvers, ADI and LSR, are included.
2202      In addition to computing prognostic sea-ice variables and diagnosing
2203      the forcing/external data fields that drive the ocean model,
2204      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2205      The implied surface heat flux is then stored in variable
2206      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2207      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2208      non-local transport term.  Because this call precedes model
2209      thermodynamics, temperature under sea-ice may not be "exactly" at
2210      the freezing point by the time theta is dumped or time-averaged.
2211      N.B.: fairly large differences in accuracy occur across
2212            different platforms/compilers; comparison between
2213            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2214            generated output gives:
2215       T           S           U           V
2216      C D M    c        m  s        m  s        m  s        m  s
2217      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2218      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2219      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2220    
2221      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2222    o GAD:
2223      - generated new common blocks to account for call of
2224        same gad routines with differing traceridentities
2225        (needed to modify tracerIdentity indices in GAD.h)
2226      - generated separate common blocks for case useCubedSphereExchange
2227        (Department of Futurology)
2228      - parameter lists to gmredi_?transport: added tracerIdentity
2229      - added new key indices to tamc.h
2230    o external_fields_load:
2231      - added this routine to TAF list
2232      - needed to make some common blocks global and additional storing
2233        along the same lines as exf package (checkpoint_lev?_directives.h)
2234    o exf:
2235      updated external forcing package
2236      - bug fixes carried over from ecco-branch
2237        (missing OBCS_OPTIONS.h in two routines)
2238      - enable easy to use "no forcing".
2239      - added exf I/O for atmospheric loading
2240      - added exf I/O for runoff data
2241      - transfered scaling between exf <-> MITgcm to exf namelist
2242    o Adding new verification experiment global_with_exf.
2243      This verification experiment is almost identical to the
2244      global_ocean.90x40x15 experiment, except that it uses
2245      the exf (and cal) package instead of the
2246      external_fields_load routine (cf README file).
2247    
2248    checkpoint46m_post
2249    o modified testscript to return -- when there are no lines of "%MON" output
2250    o added new flag "quasiHydrostatic" for QH mode
2251      and new routine quasihydrostaticterms()
2252    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2253      New routine: mom_u_coriolis_nh()
2254    o fixed sign of non-hydrostatic metric terms in u and v equations.
2255      Depend on correct sign of gravitySign.
2256    o added work.pc* to .cvsignore in aim directories using ifc
2257    o introduced flag for controllin non-hydrostatic metric terms
2258    o removed gravitySign from PARM04
2259    o switched to g77/ifc from pgf77 in aim experiments
2260    
2261    checkpoint46l_post
2262    o made convective adjustment work with pressure coordinates:
2263     - changed the direction of k-loop in convective_adjustment.F for the
2264       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
2265     - adjusted the reference pressure k-index in convective_adjustment.F
2266     - adjusted the convection condition in convect.F (in analogy to
2267       calc_ivdc.F)
2268     - convective_adjustment no longer computes anything on the halos
2269     - removed the warnings about negative salinity from find_rho.F and
2270       find_alpha.F; instead the new routine look_for_neg_salinity, called
2271       at the beginning of find_rho, find_alpha, and find_beta, does a
2272       check of the entire slice, if CPP-option
2273       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
2274    checkpoint46l_pre
2275    
2276    checkpoint46k_post
2277    o fixed the verification/global_ocean.90x40x15 experiment:
2278     - new bathymetry (the world according to A., JMC, and M.)
2279     - new initial fields and forcing fields (*.bin files)
2280     - new POLY3.COEFFS (for the next release one should switch to a full
2281       equation of state: JMD95P or MDJWF)
2282     - fixed several errors and redundancies in the data file
2283     - experiment uses looped cells
2284     - added matlab directory with diagnostic scripts for plotting of output
2285    
2286    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
2287     - read AIM physics parameters from a file (data.aimphys)
2288     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
2289    
2290    checkpoint46j_post
2291    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
2292    o move wVel computation at the end of the time step, in S/R integr_continuity
2293    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
2294    o update timeave pkg for wVel diagnostic.
2295    checkpoint46j_pre
2296    
2297    checkpoint46i_post
2298    o Clean up AIM package (and keep the results unchanged):
2299      include CPP_OPTION and use IMPLICT NONE in all routines ;
2300      declare all the variables _RL ; use _d 0 for all numerical constants.
2301      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
2302    
2303    checkpoint46h_post
2304    o cleaned up the use of rhoNil and rhoConst.
2305      - rhoNil should only appear in the LINEAR equation of state, everywhere
2306        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
2307        and the dynamical equations are all divided by rhoConst
2308    o introduced new parameter rhoConstFresh, a reference density of fresh
2309      water, to remove the fresh water flux's dependence on rhoNil. The default
2310      value is 999.8 kg/m^3
2311    o cleanup up external_forcing.F and external_forcing_surf.F
2312      - can now be used by both OCEANIC and OCEANICP
2313    checkpoint46h_pre
2314    
2315     Added code to convert surface volume flux (fresh water) into
2316     a mass flux when using P coordinates in the ocean (OCEANICP).
2317     Note: It assumes you have set rho0=rhoConst=density of fresh water.
2318    
2319    checkpoint46g_post
2320    o Include a new diagnostic variable phiHydLow for the ocean model
2321      - in z-coordinates, it is the bottom pressure anomaly
2322      - in p-coordinates, it is the sea surface elevation
2323      - in both cases, these variable have global drift, reflecting the mass
2324        drift in z-coordinates and the volume drift in p-coordinates
2325      - included time averaging for phiHydLow, be aware of the drift!
2326    o depth-dependent computation of Bo_surf for pressure coordinates
2327      in the ocean (buoyancyRelation='OCEANICP')
2328      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
2329        Theta, Salinity, and Pressure in the parameter list. This routine is
2330        presently contained in find_rho.F. This routine does not give the
2331        correct density for 'POLY3', which would be a z-dependent reference
2332        density.
2333    o cleaned up find_rho
2334      - removed obsolete 'eqn' from the parameter list.
2335    o added two new verification experiments: gop and goz
2336      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
2337    checkpoint46g_pre
2338    
2339    checkpoint46f_post
2340    o Enable tangent linear (forward mode) gradient checks:
2341      - extended active file handling to g_... files
2342      - added TANGENT_SIMULATION to theSimulationMode
2343      - extended grdchk package accordingly
2344    o added tangent linear setup in verification/carbon/code_ftl
2345    o added adjoint setup in verification/front_relax/code_ad
2346    
2347    checkpoint46e_post
2348    o Added new equation of state -> MDJWF
2349      - EOS of McDougall et al., 2002, JAOT, submitted
2350      - caveat: the equation of state is only valid for a smaller (more
2351        realistic?) range of values than JMD95P/Z and UNESCO
2352      - added masks to the calculation of pressure in store_pressure
2353      - added more check values for density in check_eos (ini_eos.F), some of
2354        the old check values are out of the range of the MDJWF-eos, so don't
2355        expect perfect matches for those
2356    checkpoint46e_pre
2357    
2358    checkpoint46d_post
2359    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
2360      'OCEANICP', also initialised field pressure correctly in ini_eos in the
2361      case of pressure coordinates. eosType='JMD95Z' in
2362      combination with buoyancyRelation='OCEANICP' now causes an error.
2363    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2364      in find_alpha/beta.
2365    checkpoint46d_pre
2366    
2367    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2368      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
2369    
2370    checkpoint46c_post
2371    o Changes necessary for ocean in p-coordinates
2372     -  Added new buoyancy relation = 'OCEANICP'
2373     -  Added new parameters = gravitySign (this used to be contained inside
2374        the factor dRdZ which I added when we first switched to R coordinates).
2375     X GM/Redi is not compatible (yet)
2376     X bottom drag and no-slip need to be debugged.
2377    checkpoint46c_pre
2378    
2379    checkpoint46b_post
2380    o Added new equation of state -> JMD95Z and JMD95P
2381      - EOS of Jackett and McDougall, 1995, JAOT
2382      - moved all EOS parameters into EOS.h
2383      - new routines ini_eos.F, store_pressure.F
2384    o Added UNESCO EOS, but not recommended because it requires
2385      in-situ temperature (see JMD95)
2386    o Modified formatting for knudsen2.f in utils/knudsen2 and added
2387      unesco.f to be used with POLY3
2388    checkpoint46b_pre
2389    
2390    checkpoint46a_post
2391    o Added (atmospheric) pressure loading
2392      - new field in FFIELDS.h, etc...
2393      - new cpp flag ATMOSPHERIC_LOADING
2394    o Changed hFacC to _hFacC in calc_phi_hyd.F
2395    o Added SHORTWAVE_HEATING to some files for consistency
2396    checkpoint46a_pre
2397    
2398    checkpoint46
2399    further merges from release1_p5
2400    o new ctrl package
2401      - adopted from ECCO environment to enable optimization
2402      - added Eliassen Palm fluxes to controls
2403    o added Eliassen Palm flux controls to gradient check package
2404    o cost package
2405      - Compatible with new ctrl package
2406      - added Eliassen Palm cost hooks
2407      - modif's of existing cost functions
2408    o Adjoint-related bug fixes in kpp:
2409      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
2410      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
2411    o autodiff package
2412      - flow directives:
2413        + new for S/R do_the_model_io
2414        + enhanced for S/R checkpoint
2415        + new gmredi.flow
2416      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
2417        disable adcommon.h/g_common.h by default.
2418      - fixed problem for adjoint of global_max
2419    o modified verification/carbon/
2420    o New setup for adjoint of global_ocean
2421    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
2422    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
2423    o incorporated hooks for sponge layer code (external_forcing.F)
2424    
2425    checkpoint45d_post
2426    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
2427    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
2428      (affects plume_on_slope "cg2d" output)
2429    o add new parameter deltaTfreesurf for free-surface time stepping
2430    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
2431    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
2432    o change phiMin in exp1 (to agree with documentation)
2433    o add new flags:
2434     - T,S forcing inside/outside Adams-Bashforth
2435     - turn off temp,salt advection and/or forcing
2436     - for each tracer, define internal flag for multiDimAdvection & A-B
2437    o monitor: change definition of KE to check conservation of Energy
2438    
2439    checkpoint45c_post
2440    o Removed f90 comments ("!")
2441    o Modified initialisations to enable exf package for MITgcm
2442      (without invoking ECCO_PACKAGE).
2443    o modifications to gradient check package (Martin Losch)
2444      - enable centered differences
2445      - modified format of standard output
2446    
2447    checkpoint45b_post
2448    o cleaned exchange calls in cg2d
2449    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
2450    o included CPP option SINGLE_LAYER_MODE in thermodynamics
2451      to configure barotropic setup (Martin Losch)
2452    o moved some initialisations within bi,bj loop in dynamics
2453      (TAF flow dependency)
2454    o in initialise_varia, moved call packages_init_variables
2455      before convective_adjustment_init
2456      (corresponding adjustment of TAF tape initialisation).
2457    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
2458    
2459    checkpoint45a_post
2460    o compute Rho over the whole domain (extend iMin,jMin indices)
2461    o specific exchange for X-slice domain (case Ny=1)
2462    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
2463    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
2464    
2465    checkpoint44h_post = checkpoint45
2466    o Fix to restore differentiability:
2467      place at which packages_init_variables is called in
2468      initialise_varia is crucial for reverse control flow.
2469    o modifications in GMRedi to enable stable adjoint
2470      (corresponding modif's in thermodynamics, dynamics)
2471    o added missing hook for sponge layer code in external_forcing
2472    o modified test cost functions
2473    o storing in gad_advection (plus removal of write(0,*)!
2474    o missing headers TR1.h added in convective_adjustment routines
2475    o errorMessageUnit set non-equal zero in eeboot
2476      (conflict on some platforms, e.g. IBM SP3)
2477    o modified carbon verif.
2478    
2479    checkpoint44h_pre
2480    o vertical grid option: allow to put the Interface at the middle between
2481      2 cell-centers ; replace delZ in pkg/kpp by drF.
2482    o GM Advective form: Tracers are advected using the residual transport (=
2483      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
2484    
2485    checkpoint44g_post
2486    o fix surface correction term in multiDimAdvection (affects plume_on_slope
2487      results) ; ifdef missing in thermodynamics.F
2488    
2489    checkpoint44f_pre,checkpoint44f_post
2490    o added PTRACERS package
2491      This allows an arbitrary number of passive tracers to be integrated
2492      forward simultaneously with the dynamicaly model.
2493      + Implemented so far:
2494        - basic forward algorithm (time-stepping, advection, diffusion, convection)
2495        - I/O and checkpointing
2496        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
2497      + Not implemented so far:
2498        - KPP
2499        - OBCS
2500      + No specific example supplied (yet) but global_ocean.90x40x15 has the
2501        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
2502        line in data.pkg.
2503      + This package is disabled by default since it increases storage.
2504    
2505    
2506    o testscript: added -cleanup option
2507    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
2508                 b) enable to filter 2D fields.
2509    
2510    checkpoint44e_pre,post
2511    o re-wrote convective adjustment to use pre-calculated weights
2512      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
2513      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
2514      Original calls to convect() still in place.
2515    
2516    chkpt44d_pre,post
2517    o added missing EXCLUDE_MONITOR flags
2518    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
2519      (incompatible typ in MIN/MAX expressions caused problems
2520      on IBM SP3)
2521    o in genmake added variable MAKEDEPEND
2522      plus resetting for case SunOS
2523    o added timer_stats.c routine for IBM SP3
2524    o removed variables in dynamics
2525    !!! I forgot to create tag chkpt44d_pre !!!
2526    !!! But chkpt44d_pre = chkpt44c_post    !!!
2527    
2528    o real fresh water flux implemented with non-linear free-surface.
2529    
2530    chkpt44c_pre,post
2531    o few fix (mask in shap_s2, EmPmR in external_field_load,
2532      USE_NATURAL_BCS in solve_for_P);
2533    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
2534    
2535    checkpoint44b_pre/_post
2536    o merge of relevant stuff from the ecco-branch:
2537      - genmake: removed $S64 overwrite for case SunOS
2538      - pkg/exf: update and corrections for field swapping and obcs
2539      - pkg/ecco: parameter lists for the_model_main, the_main_loop
2540                  harmonized between ECCO and MITgcm
2541      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
2542                      updated checkpointing_lev... lists for obcs
2543      - model/src: minor changes in forward_step, plot_field
2544                   added directive for divided adjoint in the_main_loop
2545      - pkg/mdsio: added mdsio_gl_slice
2546    
2547    o check parameters & config (chkpt44a_pre,post)
2548    o OBC and NonLin_FrSurf.
2549    
2550    checkpoint44
2551    o fix bug in mom_vi_del2uv
2552    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
2553    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
2554    o update AIM experiments (NCEP input files)
2555    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
2556    o added some stuff for AD
2557    
2558    checkpoint43
2559    o added two new advection tests
2560    o added global 4x4 degree ocean test
2561    o added test of H&S94 with free surface on cube
2562    o some final mods for gradient check, adjoint,...
2563    
2564    checkpoint42
2565      Fixed AD-related problems:
2566    o Store directives up-to-date with re-arranged Adams-Bashforth
2567      (mainly thermodynamics.F)
2568    o New store directives for multi-dim. advection schemes
2569      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
2570      * new common block and key passkey
2571      (mainly gad_advection.F)
2572    o Modified store directives for split of dynamics/thermodynamics
2573      for the case ALLOW_KPP
2574    o Cleaned argument list for timestep_tracer.F
2575    
2576    checkpoint41
2577    o re-formatted/added comments in prologues of key subroutines
2578      to work with protex
2579    
2580    checkpoint40
2581    o moved calc_gs, calc_gt and calc_tr1 back to model/src
2582    o added FLT (floats) package from Arne along with demo. experiment
2583    o re-arranged Adams-Bashforth scheme for tracers to allow easier
2584      implementation of forward-in-time forcing terms
2585    o more mods for non-linear free-surface including new variable
2586    o modified multi-dim method to work on cube
2587    o bug fix in KPP (from DM)
2588    
2589    checkpoint40pre9
2590    o added DST advection schemes
2591    o fix MPI bug on SGI's
2592    o modifications for non-linear free-surface
2593    o fixed conditionals for fixed flow/passive tracer only mode
2594    o added tension/strain form of stress tensor
2595    o changes to commenting of arguments for TAF/TAMC
2596    o added/updated many matlab scripts
2597    o added multi-dimensional advection method for tracers
2598      
2599    checkpoint40pre8
2600    o new package rw/
2601      Added method for dumping intermediate local arrays:
2602      mdsio_writetile - same as mdsio_writefield except works from inside
2603                        bi,bj loop
2604      mdsio_writelocal - same as mdsio_writetile except works for local
2605                         arrays
2606      write_local_r? - higher-level wrapper for mdsio_writelocal
2607      Controlled by diagFreq. Defaults to zero (ie. no dumps)
2608      Example given at end of mom_vecinv.F that dumps some local arrays.
2609    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
2610      control flux-form versus vector invariant code.
2611      Switch is runtime flag vectorInvariantMomentum (defaults to false)
2612      or genmake -DISABLE ...
2613    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
2614      (additional storing is now needed for case vecinv;
2615      currently nothing implemented to switch this storing off
2616      in case fluxform is used since no CPP flag available).
2617    
2618    checkpoint40pre7
2619    o bug fix in dynamics.F
2620      calc_viscosity called before k=1,Nr loop.
2621    o added some #ifdef's ALLOW_PASSIVE_TRACER
2622    o cleaned initialisations in ctrl_map_ini
2623      related to TAF
2624    
2625    checkpoint40pre6
2626    o split dynamics into thermodynamics & dynamics
2627    o corresponding split of calc_diffusivity into
2628      calc_diffusivity, calc_viscosity
2629      (kpp_calc_diff, kpp_calc_visc).
2630    o Added diffkr, kapgm to control variables
2631    o bug fix in gmredi_slope_limit for ldd97
2632    
2633    checkpoint40pre5
2634    o proper initialization of Adams-Bashforth time stepping
2635      + uses forward step for very first step of model (iter=0)
2636    o re-generated *all* output since almost all output is modified by this
2637      change (sorry but we've been putting this one off for about 2 years)
2638      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
2639        *not* regenerated since they are already out of date and I don't
2640        want to create the impression that they are suddenly working.
2641    o removed KAP stuff for DEC's
2642    o modified/added many .cvsignore files in */code and */input
2643    o added new expt "solid-body.cs-32x32x1"
2644      + this uses an alternative form of ini_curvilinear_grid.F which
2645        is not necessarily any better than the current one...
2646    
2647    checkpoint40pre4
2648    o added re-initialisations of utrans,vtrans,rtrans in
2649      calc_common_factors which are crucial for TAF.
2650    o extended iMin,jMin range for calc_common_factors,
2651      calc_diffusivity
2652    o added option ALLOW_PASSIVE_TRACER
2653    o a few minor updates and fixes
2654    
2655    checkpoint40pre3
2656    o created calc_gtr1.F for gad package
2657    o split the_main_loop and re-introduced forward_step
2658    o some recomputations of nIter0 for TAMC
2659    
2660    checkpoint40pre2
2661    o Updated to latest branch of AJA, JMC
2662    o Added gradient check package
2663    o Added routines for passive tracer handling
2664    o Added carbon sequestration sensitivity experiment
2665    
2666    checkpoint39
2667     o Modifications and fixes to support TAMC
2668       (mainly missing or wrong directives)
2669     o Corrected common blocks when fooling TAMC to produce adjoint I/O
2670       in addummy_in_stepping
2671     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
2672     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
2673     o Included following packages:
2674       cal: calendar
2675       exf: external forcing
2676       ecco: essential routines to control use of cal, exf
2677             (NB: this is not the full ECCO environment)
2678     o disabled some packages by default in genmake
2679    
2680    checkpoint38
2681     o see notes_c37_adj.txt
2682     o corrected wrong layer index in external_forcing_t
2683     o replaced the_main_loop/forward_step by the_main_loop
2684     o removed forceoutput from write_state
2685       (replaced criteria for initial/final state)
2686     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
2687    
2688    checkpoint37
2689     o mdsio.F routine split and packaged in pkg/mdsio
2690       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
2691        used unless genmake -disable=mdsio)
2692     o allow a more precise surface-geopotential gradient for the atmosphere
2693       taking into account the change in space of Alpha (=1/rho) at the surface.
2694     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
2695       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
2696     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
2697       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
2698       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
2699     o Time-Average diagnostics defined as a pseudo package "timeave".
2700     o pickup files : old pickup (before c35) did not work with new code (c35
2701       and after) unless activating 2 commented lines in initialise-varia.
2702     o Non-Hydrostatic pickup file Pb fixed.
2703     o bug with Rigid-lid version (since c35) fixed.  
2704    
2705    checkpoint36
2706     o implement Crank-Nickelson barotropic time-stepping
2707     o recover Time-Average diagnostics
2708     o fix Pb in checkpoint (PR#19)
2709     o AIM become a standard package ; clean unused CPP_kees
2710    
2711    checkpoint35
2712     o subtantial rewrite of dynamics.f
2713     o allows staggered time-stepping
2714     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
2715     o added bottom drag (linear + quadratic)
2716    
2717    checkpoint34
2718     o Modified exchange routines for correct reverse simulation.
2719     o Added verification output to comply with bug fix in impldiff.F
2720       as of c33 (exp2, natl_box).
2721     o Corrected store directives in dynamics.F
2722     o Corrected array boundaries in impldiff.F
2723     o Corrected array dimensions in gmredi.
2724       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
2725     o Added routine GLOBAL_SUM_INT to global_sum.F
2726     o Added mdsio_gl.F for ECCO purposes.
2727    
2728    checkpoint33
2729     o Fixed bug in lower BC in impldiff.F
2730     o Fixed confusion about units of forcing arrays in FFIELDS.h
2731       namely Fu,Fv,Qnet,Qsw,EmPmR:
2732       - Removed verification/natl_box/code/external_fields_scale.F
2733         (did not differ from that in model/src)
2734       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
2735         (see FFIELDS.h for description)
2736       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
2737         kpp_calc.F and kpp_transport_t.F
2738       - Removed model/src/external_fields_scale.F and calls to it
2739       - verification/natl_box uses flux data with "atmospheric" sign so
2740         a special version of external_fields_load.F is used to
2741         change the data as it's read in. This way, the arrays
2742         have the right units and signs at all times tha a user could
2743         possibly use them.
2744     o Corrected genmake to delete a temporary file during configuration
2745    
2746    checkpoint32
2747     o Scaling of forcing fields moved from external_forcing.F to
2748       external_fields_scale.F, called directly after loading fields.
2749     o Surface relaxation terms added to surface tendency fields in
2750       extra subroutine.
2751     o impldiff.F changed to avoid storing by TAMC of huge intermediate
2752       fields.
2753     o Changes in GMRedi to comply with packaging structure.
2754     o Modifications and bug fixes in KPP package.
2755     o Verification experiment for KPP added (verification/nat_box/)
2756    
2757    checkpoint31
2758     o Packages interface brought in line with defined standard
2759       -> new routines packages_...F
2760       -> changes in initialise_fixed.F, initialise_varia.F
2761       -> enables initialisation interface for ECCO package
2762     o Rescaling of external forcing fields immediately after read
2763       (removed from external_forcing.F)
2764       -> new: surface_fields_scale.F
2765       -> affects ini_foorcing.F, external_fields_load.F
2766     o Computation of surface tendencies before tendency updates.
2767       -> new: external_forcing_surf.F
2768     o Change of variable names useGMRedi, useKPP, useECCO
2769     o Further changes in dynamics.F, impldiff.F for TAMC
2770     o Tested for experiments 0, 2, 4.
2771       - not yet tested for GMRedi.
2772       - not yet tested for KPP.
2773    
2774    checkpoint30
2775     o Updates for OBCs
2776     o New experiment for test OBCs (internal_wave)
2777     o New output.txt in verification/exp4/results/
2778     o Updates for KPP: calculation of viscosity corrected, new variables
2779       kpp_dumpFreq and kpp_taveFreq
2780     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
2781       and entry for T90 in genmake
2782    
2783    checkpoint29
2784     o packaged KPP and GM/Redi
2785    
2786    checkpoint28
2787     o Corrected initialization of hFacMin for difference vertical coordinates
2788     o Modified calculation of partial cell thickness to more robust algorithm
2789     o config_summary.F: replaced write_1D_... by write_0D_...
2790       read_write.F: added subroutines write_0D_...
2791     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
2792       included some initialisations required for TAMC.
2793     o routine calc_isoslopes: modified sqrt computation to make it
2794       differentiable for zero argument.
2795     o routines dynamics, impldiff:
2796       included store directives and tape key computations required for TAMC.
2797     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
2798    
2799    checkpoint27
2800     o fixed calc_isoslopes() to so that cancellation of terms in tensor
2801       formulation works properly with variable resolution.
2802     o restructured the calling tree between the_model_main() and dynamics()
2803     o split initialise() into initialise_fixed() and initialise_varia()
2804     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
2805       in new routine ini_psurf()
2806    
2807    checkpoint26
2808     o moved some #ifdef in optional routines to encompass everything
2809       except the argument declarations. This was using up some memory.
2810     o fixed macros like _ADT to work with both versions of Linux cpp
2811     o cleaned up some unused and uninitialized variables
2812       (helps when debugging with strict compile options)
2813     o split up CPP_EEOPTIONS.h into options and macros
2814       (macros are now in eesupp/inc/CPP_EEMACROS.h)
2815     o patch for 2 processor JAM mode
2816    
2817    checkpoint25
2818     o updates for OBCs and NH
2819     o dramatically reduced memory usage
2820     o added "JAM" routines for use on Artic network
2821     o parameterization of convection by implicit vertical diffusion
2822     o added a diagnostic of convective index
2823     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
2824       (this is was partly for OBCs and NH but also in anticipation of
2825        an explicit free-surface option)
2826     o initial state input files for U and V
2827    
2828    checkpoint24
2829     o Removed some spurious "REAL"s
2830     o Updated KPP to latest version from JPL
2831     o Added a COS(latitude) in horizontal viscosity
2832    
2833    checkpoint23
2834     o Added del^4 diffusion for salt and temperature
2835     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
2836    
2837    checkpoint22
2838     o Made many small changes: implicit none, format(i5), etc...
2839     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
2840    
2841    checkpoint21
2842     o Introduced new I/O package that supports direct-access records (mdsio.F)
2843     o Split-up mid-level I/O routines
2844     o Updated input data for experiments 0,1,2,4 and 5
2845     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
2846    
2847    checkpoint20
2848     o Tidied up open-boundaries some more
2849     o Added non-hydrostatic code
2850     o Fixed some input data
2851     o Modified MPI start-up to work in "coupled" context.
2852    
2853    checkpoint19
2854     o Tidied up directory structure for verification experiments.
2855     o Added new code for open boundaries.
2856     o Corrected advective terms near boundaries.
2857     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
2858     o Implemented free-slip/no-slip BCs and del^4 dissipation.
2859     o Split default parameters out of ini_parms.F into set_defaults.F.
2860    
2861    checkpoint18
2862     o Further changes for optional code generation with
2863       CPP - ugh!
2864    
2865  checkpoint17  checkpoint17
2866   o Beginning to incorporating modularity   o Beginning to incorporating modularity
2867     for supporting atmos. and ocean configs.     for supporting atmos. and ocean configs.

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