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revision 1.146 by heimbach, Tue Mar 25 22:48:11 2003 UTC revision 1.682 by jmc, Mon Jun 19 01:06:57 2006 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o tracer advection:
8     - clean-up and simplify calc_common_factors.F
9     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
10       advection subroutine (but still not used within DST advection S/R)
11    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
12    
13    checkpoint58j_post
14    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
15      from file (collects calls previously in FORWARD_STEP)
16    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
17    o adjoint store dir. adjusted accordingly
18    o genmake2
19      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
20    
21    checkpoint58i_post
22    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
23      on wind stress (SEAICEstressFactor defaults to 1.)
24    o Total number of Timers is finite (<=40): comment out 2 non-essential one
25      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
26    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
27      on CS-grid: no longer loosing mass.
28    o exf & curvilinear-grid: no longer modify longitude xC & xG.
29    o pkg/ggl90: fix sloppy output and fix a bug
30    o pkg/seaice: added SEAICEuseEVPpickup parameter
31      - Set to false in order to start EVP solver with
32        non-EVP pickup files when using SEAICEuseEVP
33      - fix sign error in diffusion in seaice_calc_rhs
34    
35    checkpoint58h_post
36    * Modifications for bottom topography control
37      o replace hFacC by _hFacC at various places
38      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
39      o add non-self-adjoint cg2d_nsa
40      o update autodiff support routines
41      o re-initialise hfac after ctrl_depth_ini
42      o works for 5x5 box, doesnt work for global_ocean.90x40x15
43    * Adding verification for 5x5 box (4-layer) bottom topography control
44    
45    checkpoint58g_post
46    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
47       used for mean seasonal cycle, mean diurnal cycle); add an example
48       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
49    o pkg/ggl90:
50      - add parameter (minimum surface kinetic energy)
51      - fix bug (avoiding division by zero)
52    o couple pkg/thsice to pkg/seaice:
53      - modify advection in seaice to accomodate new scalar fields to be advected
54      - only muliDimAdection scheme work with seaice/thsice
55      - mapping of thsice-variables to seaice-variables, back and forth
56      - does not break the verification experiments, but does not give the
57        desired results either
58    o pkg/seaice
59      - make (default) second order advection a bit less confusing?
60    
61    checkpoint58f_post
62    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
63      to pkg/seaice):
64      - new routines thsice_map_exf and thsice_get_exf provide the interface
65      - add an additional formal parameter to thsice_solve4temp
66    o pkg/exf:
67      - add new fields wspeed, snowprecip (to be able to couple to thsice)
68      - correct Stefan-Boltzmann constant
69      - new parameter for longwave surface emittance
70      - separate some stuff from exf_bulkformulae into new routines  
71        exf_radiation, exf_wind
72      - add new parameters and constants: longwave emissivity for ocean, ice
73        and snow, evaporation parameters over ice
74      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
75        either wind from stress or stress from wind
76    o pkg/thSIce:
77    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
78    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
79       and THSICE_CALC_THICKN
80    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
81    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
82      to make debugging easier.
83    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
84    o pkg/bulk_force:
85      - clean-up comments and parameters ;
86      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
87    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
88      generate new output for test-experiment: aim.5l_cs.thSI
89    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
90      testreport accordingly
91    
92    checkpoint58e_post
93    o SEAICE_CGRID adjoint done
94    o R_STAR adjoint implemented.
95      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
96      * need to sort out init. of h0facc, etc.
97    o Make pkg/profile fully independent of ecco,cost, etc. stuff
98      to be able to use it in pure forward.
99    
100    checkpoint58d_post
101    o upgrade simple test-experiment to tutorial example:
102     step.1: duplicate the experiment and (step.2) will remove the old copy.
103      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
104      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
105      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
106      tutorial_global_oce_biogeo    <- copy of dic_example
107      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
108      tutorial_plume_on_slope       <- copy of plume_on_slope
109      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
110      tutorial_global_oce_optim     <- empty for now (David ?)
111      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
112     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
113    o correct a sign problem in cost_scat.F
114    o obcs and ptracers: fix boundary conditions for advections schemes
115      with larger stencil
116    o thsice adjoint: start
117    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
118      completeness
119    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
120      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
121    o ptracers adjoint:
122      * avoid extensive recomputatations
123      * fix missing re-init. of gptr (missed by TAF)
124    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
125      me to turn off the excessive output to STDOUT that this package produces
126    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
127      and add those terms in Vector-Invariant formulation.
128    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
129      if the control period (xx_hfluxperiod etc) is 0
130    o in profiles pkg, clean routines and fix details
131    o in ecco pkg, reading ssh data:
132      fix problem in case the model does not start at iter0=0
133    o fix mnc-pickup/restart for ptracers
134    o new package prifiles:
135      code to compute profile-based cost by Gael Forget
136      (modifs in ecco, ctrl, autodiff)
137    o Benign bug fix in initialization (spotted by M. Mazloff) of
138      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
139    
140    checkpoint58c_post
141    o adjoint: finish NLFS adjoint and provide reference output in
142      verification/global_ocean.90x40x15/results_ad_nlfs
143    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
144      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
145      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
146      with SEAICE_CGRID defined.
147    o move calendarDumps from "data" to "data.cal" and clean-up the code
148      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
149    o add useEXF & useCAL flags (for now, set in hard-coded way)
150    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
151      (were missing in NH mode, and wrong in quasihydrostatic mode).
152      waiting for Chris updated version of calc_gw to add those CALLs.
153    o fix bug in quasihydrostatic S/R ;
154      add a test for this option: global_ocean.90x40x15.qshyd
155    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
156      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
157    o add on/off flag useOffLine for package OFFLINE
158    o seaice:
159      - modify advection so that it works also on the C-grid
160      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
161        problem in multi-tile runs with C-grid
162      - add flags for clipping ice velocities and/or masking solver forcing
163      - fix drag (ocean on ice) formulation and a bug that caused noise in the
164        C-grid solver
165      - added a few comments to seaice_diffusion.F
166      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
167        are now exclusive)
168      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
169        required re-ordering the code a little:
170       + make DAIRN global variable (defined in SEAICE)
171       + move computation of the viscosities eta and zeta into a new separate
172         routine (because I need to recompute them in seaice_ocean_stress.F)
173    
174    checkpoint58b_post
175    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
176      update output.txt of exp. aim.5l_cs.thSI
177    o various mnc cleanups and improvements:
178      + shrink lookup tables by factor of ~4
179      + better error reporting when running out of lookup space
180      + able to handle longer path/file names (up to 500 chars)
181    o adjoint:
182      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
183      - TBD: "hidden" mom_vecinv recomp. in dynamics
184    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
185     (allow to differentiate between forcing components using new integer flags:
186      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
187     and add new flag to put Dissipation tendency out of Adams-Bashforth.
188    o ecco
189      - enable trend removal from SSH anomaly obs.
190    o adjoint
191      - a fix for PmEpR when #undef EXACT_CONSERV
192      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
193      - try to fix "hidden" recomp. in forward_step for NLFS
194        (NLFS seems broken sometimes after I checked it in)
195    o seaice:
196     - add c-grid version of the dynamic solver:
197       + three new routines that are the c-grid substitute lsr, dynsolver
198         and ostres
199       + put a few fields that were local to dynsolver into global common
200         blocks, so that I can move the computation of stresses etc into
201         seaice_lsr (saves coding but may break the adjoint).
202     - replace more hardwired parameters by runtime parameters
203     - add ice masks that mask the rhs of the implicit solvers where there
204       is no ice (commented out in seaice_dynsolver, because i am not sure
205       if this works properly), eventually this should replace the clipping
206       of ice velocities in seaice_dynsolver to +/-40cm/s.
207    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
208      include it only where its needed
209    o move balancing of fluxes before the call of external_forcing_surf
210    o seaice:
211      - correct units of turning angles (now they are really in degrees)
212      - move computation of GWATX/Y out of main routine into dynsolver
213      - initialize GWATX/Y in seaice_init
214    o Apply mask on Fresh-Water flux (needed for SSH forcing).
215      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
216    o seaice: add runtime flags for turning angles (default to zero)
217    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
218      and trend from exf forcing and ctrl control adjustments
219    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
220      (since checkpoint57x_post)
221    o change the default rotation period to 86164.s = the Earth rotation
222    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
223      and based on a reference stratification. Tested within hs94.cs-32x32x5.
224    o seaice advection: add code for choosing between the default (2nd order
225      central differences) and multiDim advection schemes provided by
226      pkg/generic_advdiff
227    o seaice:
228      - removed all references to SEAICE_GRID.h fields from
229        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
230        (cubed-sphere configuration will change a little)
231      - grid computations in seaice_init are obsolete now.
232      - cleaned up code a little so that is easier to read (hopefully).
233      - added new (better?) discretizations of default advection and diffusion
234        (turn on with SEAICEuseFluxForm)
235      - replace 1 in 3d global fields by kSurface in growth.F
236      
237    checkpoint58a_post
238    o seaice:
239      - bug fix in advect.F
240    o shelfice:
241      - separate shelfice load anomaly from pload (breaks with time
242        dependent forcing), => introduce constant field shelficeLoadAnomaly.
243        Its default is 0., but it may be computed more cleverly from (unknown)
244        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
245        done offline. A good approximation of the pressure load anomaly is
246        necessary to avoid large initial adjustment processes underneath
247        deep-reaching shelfice.
248      - small fix in ISOMIP shelfice_thermodynamics
249      - add more sophisticated thermodynamics of Hellmer (1989), this is
250        now the default
251      - give a few constants more intuitive names
252    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
253      if bulk formulae are used in long integration (especially EmPmR). Turn
254      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
255      if balancePrintMean, the imbalance that is substracted is printed to
256      STDOUT.
257    o fix bug (typo) in obcs_apply_eta.F
258    o add a new package shelfice which enables us to model the circulation
259      underneath shelf-ice with draughts of hundreds of meters.
260     - works
261     - to do: + include improved thermodynamics
262              + check whether kSurfC (from model/inc/SURFACE.h) can be used
263                instead of new field kTopC
264              + can we use topoFile, Ro_surf and existing code in ini_depth.F
265                instead of new field R_shelfIce and new code in ini_depth.F
266                and ini_mask_etc.F?
267              + adjust vertical mixing schemes?
268    o seaice pkg:
269     - add a cpp-flag to include a simple formula for a salinity dependent
270       freezing point of sea water at the surface
271     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
272       meridional stresses are now different (and hopefully correct)
273    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
274       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
275       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
276    o pkg/diagnostics: add options and parameters for regional-statistics
277       diagnostics ; define regions by reading a region-mask from a file
278       (might add other options later)
279    o pkg/bulk_force:
280     - add option and parameters to use AIM surface-flux formulae.
281     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
282       others forcing fields (defined in PARM05, parameter file "data") are loaded
283       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
284     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
285     - use the right EXCH call for uwind,vwind (to work on CS-grid).
286     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
287       and parameters (note: calcWindStress replaces .NOT.readwindstress).
288     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
289    
290    checkpoint58
291    o add "--embed-source" option to genmake2 which, when the supporting
292      tools can be compiled (as determined by genmake2) will turn on the
293      embed_files package which then embeds the entire MITgcm source code
294      (*.[fFhc] + Makefile) used for the build within the executable
295      - requested by CNH but off by default
296      - adds a paltry <9MB to the mitgcmuv executable in most cases
297      - only writes the output when useEMBEDSRC in eedata is true
298    o clean up 3-dim. relaxation codes:
299      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
300      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
301      * Thanks to Tom Haine for testing!
302    
303    checkpoint57z_post
304    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
305      affects output (@ truncation level) of exp. plume_on_slope ; updated.
306    o fix the pickup behavior for obcs in combination with ptracers
307    o fix a bug in ptracers_external_fields_load
308    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
309      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
310    o transfered surface NH pressure to eta field (if exactConserv).
311    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
312         and update lab_sea output.txt file.
313    o completing 3-dim. relaxation code: additional term
314         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
315      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
316      * At compile time, in "EXF_OPTIONS.h" set
317          #define  ALLOW_CLIMTEMP_RELAXATION
318          #define  ALLOW_CLIMSALT_RELAXATION
319      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
320          tauThetaClimRelax3Dim = 15552000.0,
321          tauSaltClimRelax3Dim  = 15552000.0,
322      * 3 cases:
323          1) Use a constant-in-time 3-dim. field
324          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
325          3) Real-time relax. to time-evolving prescribed field
326    o Adding Laplacian-type smoothness constraint on
327      initial and boundary (forcing) controls (ic, bc)
328      * enable at compile-time via
329        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
330      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
331      * Absolute scale somewhat unclear so far
332      * no area weighting was included since no other cost term does so far
333    
334    checkpoint57y_post
335    First step for a NLFS adjoint
336    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
337    o new init. routines for calc_r_star, calc_surf_dr
338    o still need to deal with ini_masks_etc
339    o testreport seemed happy
340    checkpoint57y_pre
341    
342    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
343    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
344    o add new offset feature to offline pkg (plus minor cleanup)
345    o cfc fixes for final year of integration
346    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
347      be in GCHEM_OPTIONS).
348    
349    checkpoint57x_post
350    o fix testreport Pb in multiple test experiment.
351    o cleanup our namelist syntax in verification:
352      - make it more F95 standards compliant (some work still needed)
353      - allows the vast majority of our tests to work with gfortran
354    o Non-Hydrostatic:
355     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
356     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
357    o Allow to apply AB on T,S rather than on AB(gT,gS):
358     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
359     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
360       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
361     - need a "clever" read_pickup to restart from the other AB formulation
362    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
363    o remove some unused variables (reduces number of compiler warnings)
364    o adjoint
365      * Disable useVariableViscosity for adjoint for time being
366        (there are a number of extensive recomputations)
367      * Initialize certain variables needed for adjoint
368    
369    checkpoint57w_post
370    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
371                 fix the singleCpuIO RS version of MDSWRITEFIELD
372       and add a WARNING if using globalFiles=T with multi-processors.
373    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
374      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
375    o tracer advection scheme:
376      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
377       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
378       was not very convenient).
379      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
380       (further tests needed for the implicit DST & Flux-Limiter schemes).
381    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
382      and sRef for convenience, handy, when you want to initialize
383      ptracers in a large domain with a constant non-zero value. Also,
384      untangle ptracers_init.F a little.
385    
386    checkpoint57v_post
387    o change dome exp. to use variable viscosity in side-drag terms.
388    o remove all the files from the cfc_offline test since they are now
389      incorporated into tutorial_cfc_offline which has been producing
390      identical results for a few days of testing
391    o add new parameter: sideDragFactor to enable half-slip-side BC
392      and change side-drag S/R to use viscosity from mom_calc_visc
393      (can switch back by setting sideDragFactor=0.); affects results at
394      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
395       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
396    o vorticity & strain are now computed without masking, to account for
397      no-slip-side BC in variable viscosity calculation ; mask is applied
398      anyway later on, before computing advection/coriolis terms.
399    o modify exp4 to test new obcs support for reading from external files
400      and for passive tracers
401    o fix behavior of ptracers_monitor when monitor output is written to a
402      netcdf-file; still not independent of monitor.F (writes in the same
403      file).
404    o change default value of tRef (put a uniform, meaningful value for ocean
405      & atmos) and initialize sRef (was missing, as Martin mentioned).
406    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
407      to be proportional to enstrophy dissipation length.  Thus,
408       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
409      This is now consistent with Smagorinsky and with the manual.
410    
411    checkpoint57u_post
412    o OBCS and PTRACERS: add open boundary support for passive tracers
413      - either use homogenous (pseudo) v.Neumann conditions or prescribe
414        OB-values from file; this is not different from the way theta and salinity
415        are treated
416      - however, Orlanski-radiation conditions are not supported, and the model
417        will stop if you use pTracers and Orlanski at the same time.
418      - beefed up the rountine obcs_external_fields_load: now only those open
419        boundary values are overwritten with values from files for which there
420        are really files, otherwise the OB-fields remain untouched. This makes
421        it possible to use different OBs at different ends of the domain (as
422        with EXF)
423    o reduce number of exch calls in shap_filt (s2).
424    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
425      truncation level) 4/5 MLAdjust test results (11&12 digits match).
426    
427    checkpoint57t_post
428    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
429    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
430      same truncation, independent of the face number: affects affects several
431      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
432    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
433      note that biharmonic viscosity + no-slip was not tested in any experiment.
434    o fix bug in non-linear free-surf side-drag ; generate new output for
435      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
436    o make mnc honor the writeBinaryPrec flag for most kinds of output
437    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
438    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
439      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
440    o add brackets in multi-terms sum to get same truncation, independent of
441      the face number (manage to get exactly same value of gU,gV at the cs-edge)
442      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
443    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
444      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
445      a maximum grid-scale Reynolds number.  Also, changes all length calculations
446      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
447      Suggested values of viscosity parameters found in mom_calc_visc.
448      Many new viscosity diagnostics available.
449    
450    checkpoint57s_post
451    o Add clearing-house for viscosity calculations, mom_calc_visc and
452      correct numerous bugs in LeithD and Smagorinsky discretizations.  
453      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
454      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
455      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
456      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
457      The Strain-Tension form is now called with useStrainTensonVisc=.true.
458      ViscAhStrain and viscAhTension are now retired.
459    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
460    o In response to JMC's bug report, genmake2 now ignores any soft-links
461      that it finds in the *current* directory when searching for files.
462      Soft-links found in any other source directories will still work as
463      they did before.
464    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
465      a C routine to unlimit the stack size
466    o mnc-ify pkg/aim snapshot vars
467    o mnc-ify pkg/land as requested by Daniel
468    o various changes to mnc including:
469      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
470      - output can now be grouped so that all files within a group
471          change the ITER portion of their names in lock-step together
472      - can now read ("global") PER-FACE (in addition to PER-TILE) files
473          and works with both EXCH1 and EXCH2 (but needs more testing)
474      - writing works for all verification test cases w/ g77 on Linux
475    
476    checkpoint57r_post
477    o make MNC variable initialization happen earlier
478    o add diagnostics for (almost) each term of the momentum Eq.
479    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
480    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
481    o remove MINIMAL_TAVE_OUTPUT option ;
482      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
483    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
484      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
485    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
486    o add time-dependent SST, SSS control
487    o cost terms in ecco/ modularized (new cost_generic.F)
488    o cost_averages routines are modularized (new cost_averagesgeneric.F)
489    o new infrastructure for seaice model vs. obs misfits in seaice/
490      * driver from the_main_loop.F is seaice_cost_driver.F
491      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
492      * gradient check in Exp. 6a of natl_box_adjoint/
493    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
494      (see README file)
495    
496    checkpoint57q_post
497    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
498    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
499      - bug was reported by Jean-Michel and Ian Fenty
500    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
501      update exp. cpl_aim+ocn output.
502    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
503      Needed for high-res. runs with large global files
504      to be able to limit tapelev size
505    o Changed some tests for adjoint:
506      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
507      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
508      * global_ocean.90x40x15/ back to default 3-level checkpointing
509    o Modifications to enable scripted COMMON to MODULE conversion
510      * verification/OpenAD/code/ has necessary scripts and description;
511      * converts, compiles and runs successfully;
512    
513    checkpoint57p_post
514    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
515    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
516      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
517    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
518    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
519      (was already the case for dissipation with mom_vecinv,
520       and also the case for grad.PhiHyd when staggered-timeStep)
521      This will allow to put dissipation out-off the AB time-stepping.
522     Unfortunately, affects truncation error. Update output of exp. that "fails"
523      (cg2d matching number) and leave the others for later: front_relax(10),
524      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
525      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
526    
527    checkpoint57o_post
528    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
529      (2) its ready to be documented during the 20050801 DocFest
530    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
531      for ideal_2D_oce and lab_sea on linux_ia32_g77
532    o set to #undef CTRL_SET_OLD_MAXCVARS_30
533      in global1x1_tot/code_seaice_adj to access indices 32, 33
534      (worth another tag)
535    
536    checkpoint57n_post
537    o adding precip control xx_precip 32
538    o adding swflux control xx_swflux 33
539    o Replacing 10 forcing penalty cost routines by 1 generic.
540    o Implementing partitioning in time-mean and variable adjustment
541      for atmos. state.
542    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
543    o in natl_box_adjoint:
544      * updated exp 1 to 10
545        (but does not have time-mean vs. variable split results yet)
546    o updated global1x1/*_seaice_adj/
547      to incorporate latest changes
548    o enable useSingleCpuIO for mdsio vector routines
549      (applies in particular to tapelev I/O)
550    o removed inefficient K-loop in all active_file*control*.F
551    
552    checkpoint57m_post
553    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
554      and advect_cs (use EXCH-2 and standard cs-32 grid files).
555    o pkg/exch2: filling of face-corner halo regions is optional
556      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
557    
558    checkpoint57l_post
559     tag before updating tutorials (pre-release-2)
560    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
561       for output and interpolation of input fields onto model grid)
562    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
563       Affects results of exp. rotating_tank ; update output.txt.
564    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
565          and taking the square quantity and/or using a fraction-weight field.
566    o fix aim_diagnostics_init.F mate numbers.
567    o add mnc output capability to diagnostics/diagstat and update
568      our cvsignore files for the ACSII output generated
569    
570    checkpoint57k_post
571    o lab_sea now uses diagnostics package and provides a suite of
572      new EXF diagnostics output.
573    
574    checkpoint57j_post
575    o exf
576      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
577        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
578        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
579      * extended diagnostics output
580        - now includes all EXF variables
581        - hs, hl moved to common block
582        - separate S/R for diagnostics, called after ctrl vector is added
583        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
584        - EXFqnet contains true Qnet (i.e. includes qsw)
585      * updated verif. lab_sea, global_with_exf
586      * Rearranging hflux (exf_mapfields -> exf_getforcing)
587        to ensure that diagnostics sees a true EXFqnet
588    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
589    o diagnostics pkg: change pointers so that 1 diagnostic can be used
590      several times with different frequencies.
591    o mnc-ify the thsice package as requested by Daniel Enderton
592      - the monitor--MNC output needs work
593      - many attributes need to be added (most are currently blank)
594    o mnc-ify theaim_v23 package as requested by Daniel Enderton
595      - many attributes need to be added (most are currently blank)
596    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
597    o add Sadourny like discretization to the 4th.O vorticity advection scheme
598    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
599      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
600         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
601    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
602     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
603    
604    checkpoint57i_post
605    o Diagnostics package was changed: diagnostic allocation is now deactivated
606      by setting an empty file name in the namelist (used to be by setting 0 frequency)
607    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
608      add 1rst Order upwind vertical Shear.
609    o add a quick fix for A/B checkpointing in OFFLINE mode
610    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
611      end-run around the C/Fortran linking horror in eesup/src/timers.F
612    o added pkg/runclock: allows user to terminate run based on wall clock
613    o added non-hydrostatic scaling parameter: nh_am2
614    o pkg/my82: futile attempt to make results compiler-independent by adding
615      some "_d 0", etc. no effect.
616    o for mnc output, fill the 'T' coordinate var with myTime and create a
617      separate 'iter' variable for iteration count
618    o pkg/diagnostics:
619      add new capability: output of Global/Regional & per-level statistics ;
620      tested against monitor output (including land & thSIce) on various exp.
621    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
622    
623    checkpoint57h_done
624      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
625      data.diagnostics, data.gchem, data.ptracers) is done.
626    
627    o pkg/diagnostics: prepare for Global/Regional statistics.
628      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
629    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
630      and rename it: DIFFERENT_MULTIPLE
631    
632    checkpoint57h_post
633    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
634    o pkg/diagnostics: change output frequency, now in seconds (instead
635      of Nb of iterations). This requires to change data.diagnostics.
636    checkpoint57h_pre
637    
638    o in mnc, let the user create the output dir if both mnc_outdir_date
639      and mnc_outdir_num are false
640    o add fflags() to pkg/diagnostics which allows one to specify, on a
641      per-file basis, the file precision [default behavior is unchanged]
642    o added diagnostics to pkg/kpp, including computation of mixed layer
643      depth based on a temperature/density criterion
644    o updated verification/natl_box to test the new pkg/kpp diagnostics
645    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
646    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
647    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
648      not mnc -- this mistake was found by JMC and is now corrected
649    
650    checkpoint57g_post
651    o add Adams-Bashforth 3rd Order time stepping:
652      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
653      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
654    checkpoint57g_pre
655    
656    o make lambda[Theta,Salt]ClimRelax spatially varying
657      (default remains spatially uniform constant based on tau)
658    o added new control variables
659      * init. uVel, vVel, etanN
660      * lambda[Theta,Salt]ClimRelax
661    o separate masks used for ctrl_pack/unpack 'from write_grid' output
662      (suggested by G. Forget)
663    
664    checkpoint57f_post
665    o add parameter "baseTime" = model base time = time at iteration zero
666      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
667      account for baseTime shift
668    o move Coriolis arrays from PARAMS.h to GRID.h
669    checkpoint57f_pre
670    
671    o mnc-ifying the seaice package
672    o introduced an alternative length scale calculation for use in the limiting
673      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
674    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
675    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
676      as well as grad(vort3).  Made it compatible with both approximate form
677      for the cubed sphere and full form of these gradients.  Added flag
678      useFullLeith to select between approximate and full form.  
679    o add "d0" in getcon.F to reduce differences between compilers/platforms
680      update output.txt of exp. fizhi-gridalt-hs
681    o change port_rand funtion to allow to set the seed.
682    o fix obscure MNC bug involving conversion between reals and integers
683      - it caused no problems with certain (eg. gcc, ifc) compilers but the
684        new version is now more standards-compliant
685    o adjoint-related modifications
686      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
687      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
688      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
689    
690    checkpoint57e_post
691    o Adding eddy stress controls a la Ferreira et al.
692    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
693    
694    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
695      update output.txt of exp. fizhi-gridalt-hs
696    o add more "Z" dimensions and associated coordinate vars to MNC
697    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
698    o parameter calendarDumps: when set, approximate months (30-31 days) and years
699      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
700      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
701      months and years.  Requires pkg/cal.
702    o diagnostics: add pickup functionality
703      - off by default for backwards compatibility
704      - current version only uses MDSIO -- MNC will be added
705    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
706    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
707    
708    checkpoint57d_post
709    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
710    o modify verification/ideal_2D_oce so that it tests the creation of mnc
711      output from the diagnostics package
712    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
713    o make genmake2 more portable by using ".$FS" instead of ".f" for more
714      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
715    o add coordinate variables to the MNC output from the diagnostics package
716    o change MNC-flags default value: true when useMNC=TRUE
717    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
718      the ability (off by default) to read the grid information using MNC
719    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
720    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
721    o do snap-shot diagnostics at the middle of the time-interval (instead of
722      at the end).
723    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
724      new test for AIM with thSIce + slab-ocean
725    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
726    o move state variable diagnostics to the beginning of the time step ;
727      (note: still needs some work specially for snap-shot diagnostics)
728      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
729    
730    checkpoint57c_post
731    o Change testing option (-ieee) to get closer agreement between g77 & ifort
732    o generate new output.txt files on faulks with g77 & the new -ieee option
733    checkpoint57c_pre
734    
735    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
736      update output.txt of exp. global_ocean.90x40x15
737    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
738      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
739    o add saltFlux(+File) forcing capability with periodicExternalForcing
740    o allow to use pkg diagnostics for GM-Redi & ThSIce output
741    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
742    o improvements for the MNC output from DIAGNOSTICS:
743      - correct handling of the unlimitied dimension
744      - all dims now have associated coordinate variables
745      - variables located at U, V, and Corner ("Z") points are now written
746        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
747        *all* data points are output
748    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
749    o added pkg/seaice/seaice_monitor.F
750    o mdsio_readfield.F can now read files visible only to master MPI process.
751    o pkg/seaice: some test code for ice-modified ocean stress
752    o exf_getffields interpolation defaults to bilinear for all scalar forcing
753      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
754      spurious negative numbers for precipitation and humidity.  Will cause
755      some small numerical differences for integrations using pkg/exf/exf_interp.F.
756    o pkg/ctrl/
757      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
758        May be enabled via doPackDiag
759      *  introduce z-scaling of
760         + gradient (doZscalePack) and
761         + control (doZscaleUnpack)
762    o pkg/mdsio/
763      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
764      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
765    
766    checkpoint57b_post
767    o simplify options in diagnostics_fill arguments (remove weird combinations)
768    o fix MNC coordinate variables so that they now contain per-face index
769      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
770      general, EXCH2 grids are only aligned to a "local" coordinate system
771    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
772    o Implement instantaneous output within pkg diagnostics:
773      setting a negative frequency in data.diagnostics produces
774     "snap-shot" output (as opposed to time-average if freq > 0)
775    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
776      NOTE: change ptracer diagnostics name: use 2 characters to work with
777            more than 9 tracers. Add also diagnostics of advect & diffus flux.
778    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
779      becomes the coordinate variable for the 'T' dimension
780    o add CF-style coordinate variables to MNC
781      - just a first cut:  numbers are meaningless on the cubesphere and
782        missing along the T axis but otherwise it works!
783    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
784    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
785    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
786      this is based directly on what the model compute, so that the content of
787      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
788    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
789    o clean up build options files for SunOS, in particular
790      - remove -traditional from xmakedepend
791      - change -xarch=v9 to -xarch=native for f77
792      - restore use of make (not gmake)
793      - add CC=gcc if using g77
794    o changes per discussion of AM, JMC, & EH3 today:
795      - move redundant "grid" variables out of "state" -- in preparation of
796        creating proper CF-style coordinate variables and in recognition
797        that any/all grid variables can be easily copied (eg. w/NCO) from
798        the grid files into any of the other NetCDF files
799      - *always* output grid variables with MDSIO (this will eventually be
800        changed)
801      - output MNC grid file if useMNC is true
802    o every instance of _END_MASTER() has been found and replaced with
803      _END_MASTER( myThid ) in order to satisfy certain picky Sun
804      preprocessors
805    o re-arrange diagnostics pkg initialisation:
806     - allow each package to extend the available diagnostics list
807     - add some checking and fix small problems (multi-threaded, ...)
808     - new S/R diagnostics_fill (replace fill_diagnostics):
809       look through the short list of active diag. (instead of the long list)
810       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
811    
812    checkpoint57a_post
813    o this set of changes restores TAMC compatibility
814      tested for global_ocean.90x40x15 adjoint on trough
815      (what a pain)
816    
817    checkpoint57a_pre
818    o some modifs in tools/build_options for sunos
819    o call ctrl_pack for ctrl at end for optimcycle=0
820    
821    checkpoint57
822    o add horizontal bi-harmonic viscosity for vertical velocity
823      - new parameter viscA4W (defaults to viscA4)
824      - affects only non-hydrostatic code
825      - to be done: no-slip lateral boundary conditions
826    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
827    o implement Implicit Vertical advection for pTracers
828    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
829      (implemented also for implicit vertical diffusion & advection)
830    o OBCS: extend application of tracer open boundary conditions
831      to a strip beyond the boundary of width Olx/Oly
832    o add call monitor to TAF set of required calls (flow directives)
833      and include in natl_box_adjoint
834    o untangle a few ifdefs related to cost, ctrl, autodiff
835      untangel a few ALLOW_ECCO_OPTIMIZATION
836    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
837      (theta2, salt2 in ecco_cost_weights)
838    
839    checkpoint56c_post
840    o OBCS as control variables
841      - update ctrl_ad_diff.list, obcs_ad_diff.list
842      - remove balance of obcs controls from default
843      - fix index bug nobcs in ctrl_init
844      - fix dummy fields filen in ctrl_pack
845      - add dummy weights for obcs
846    o lsopt: comment out fort.94 output
847    o optim:
848      - remove unnecessary header files
849      - adjusted namelists
850      - add xerbla.F to Makefile
851    o exf:
852      - multiple modifications of exf_check_range
853      - unit change in exf_init_runoff from [m/year] to [m/s]
854    o mdsio:
855      - i/o-vector change debugLevel from debLevA to debLevB
856    
857    checkpoint56b_post
858    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
859      is called from DO_THE_MODEL_IO
860      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
861      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
862      - clean up PTRACERS_WRITE_TIMEAVE a little
863    o add another verification experiment that tests both the cfc-pkg and
864      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
865      reactive tendencies treated inline with regular timestepping
866    o testreport previously did a lousy job of comparing small numbers, so
867      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
868      implemented in the little c-progam tmp_cmpnum.c which is embedded in
869      testreport.
870    o ptracers_monitor: bug fix for MPI
871    
872    checkpoint56a_post
873    o GCHEM: finish reorganizating the package
874      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
875        (introduces another 3D-array for each passive tracer, but only if
876        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
877        gchemTendency is not needed because the timestep is done separately)
878      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
879      - GCHEM is now---more or less cleanly---separate from PTRACERS
880      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
881        so clear to me how that should be done in a general way.
882    o CFC: improve formatting of output in CFC_ATMOS
883    o PTRACERS:
884      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
885        that ALL experiments with ptracers enable can be checked. This makes
886        GCHEM_MONITOR obsolete.
887      - include a runtime parameter PTRACERS_monitorFreq that defaults to
888        monitorFreq
889      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
890    o add PTRACERS (PTR0[1-5]) to testreport output
891    o exf_check_range:
892      * default changed to .TRUE.
893      * will check values for niter0 if debLevA, every timestep if debLevB
894      * STOP in exf_check_range if 'out of range'
895      * range chosen generous to allow for potential extema
896      TBD: a version with stricter range
897           permitted range would be runtime parameters
898    o GMredi:
899      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
900      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
901      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
902    o GCHEM:
903      - move call to GCHEM_FORCING_SEP, so that it is now called before
904        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
905      - introduced a useGCHEM runtime flag and applied it everywhere.
906      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
907        this flag is now only visible within GCHEM-pkg routines.
908      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
909        be replaced by a 3D array that is computed before thermodynamics; for
910        this, the tracer ID iTracer had to be included into the parameter list
911        of ptracers_forcing
912      - set up forward_step to call gchem_forcing, that will replace
913        gchem_forcing_int in ptracers_forcing
914      - cleaning up
915    o small cleaning of exch2: remove files that are also in eesupp/src
916    
917    checkpoint56
918    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
919    o mnc: cleanup "full" files--fixes out-of-memory problem
920    o ECCO-GODAE
921      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
922      * fully merged and updated from SIO code
923        windstress sign change affects
924        - exf_inscal_[u/v]stress
925        - sign of xx_tau[u/v] adjustments
926        - signs in cost_scat
927      * ctrl_get_gen: avoid update of tau[u/v] for first few days
928      * natl_box_adjoint updated and compressed
929      * 2-level checkpoint switch added
930        (tested in EXP. 1 of natl_box_adjoint)
931      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
932    o SVD
933      * first complete, non-hacked version for SVD calculations
934      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
935        performed via direct access files admtlm_vector.it????
936        (via ctrl_[un]pack)
937      * optimcycle is used for ARPACK iteration counter
938        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
939      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
940        and add linear transforms where necessary
941      * controls are initial/final SST, SSS (can be extended; need to check
942        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
943    o mdsio: filename info to both stderr, stdout
944    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
945      from sign change
946    
947    checkpoint55j_post
948    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
949      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
950    o add consistent build directories and .cvsignore files to verification
951    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
952    o make all subroutines 30 or less characters in length for certain older
953      compilers to work (a thorough search only turns up two routines in
954      pkg/ptracers)
955    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
956      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
957    
958    checkpoint55i_post
959    o change arrays for total vertical diffusivity (2.D if explicit,
960      3.D if implicit) ; each ptracer uses its own background value.
961    o added mnc/NetCDF output capability to ocn_compon_interf
962      - added bits to verification/cpl_aim+ocn so that it can run on
963        ITRDA and other clusters without the mpirun "-wd" option
964    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
965      configuration
966    o give MNC the ability to create additional files rather than
967      exceeding a specified file size limit "MNC_MAX_FILESIZE"
968      - the default is just less than 2GB which is a practical limit
969        on many systems
970    o Compute the non-local term using either KPP vertical diffusivity (=default)
971       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
972    
973    checkpoint55h_post
974    o add verification test "vermix"
975    o remove all the *_ioinc flags and replace with the single global
976      outputTypesInclusive flag
977    o allow to set a vertical profile of vertical diffusivity for T & S
978    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
979    o useMNC moved from data.mnc to data.pkg
980    
981    checkpoint55g_post
982    o Renaming carbon AD experiments to comply with testreport conventions
983    o Updating adjoint of Held-Suarez hs94.1x64x5
984    o Fixing directives for non-ECCO forward_step, after ECCO directives
985      have been fixed to avoid recomp. of do_oceanic_phys
986      Works well for global_ocean.90x40x15,
987      but recomp. issue remains for carbon
988    o Updating adjoint output for natl_box_adjoint after
989      pkg/ecco has been modified (see taga c55d_post)
990    
991    checkpoint55f_post
992    o rename to timeave_init_fixed
993    
994    checkpoint55e_post
995    o some delicate re-shuffle of store directives to avoid one
996      extra call of do_oceanic_physics
997      affects ecco_the_main_loop.F, do_oceanic_physics.F
998      checkpoint_lev1_directives.h
999    o NB: this may break global_ocean adjoint temporarily,
1000      but it is clear how to fix it. Will do later, need this now.
1001    
1002    checkpoint55d_post
1003    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1004    o ecco_cost_weights is modified to 1x1 runs
1005    o modifs to allow observations to be read in as
1006      single file or yearly files
1007    o enable to read exf forcing fields as either
1008      single file or yearly files (flag useExfYearlyFields)
1009    checkpoint55d_pre
1010    
1011    o switch between 2-level and 3-level checkpointing
1012    o add ability of MNC to write local and "partial" (eg. 2D slices where
1013      the full 3D field is never actually stored) arrays to NetCDF files
1014      with the correct (that is, the complete multi-dimensional) set of
1015      array indicies
1016      - used in mom_vecinv() to write the diagFreq output
1017      - tested (demonstrated) in verification/aim.5l_cs
1018    o further mnc-ification
1019      - add verification/lab_sea to the list with mnc setups
1020      - fix undefined mnc v-names in cd_code
1021      - add kpp to mnc output (both snapshot and timeave)
1022    o non-hydrostatic code
1023      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1024        in calc_gw.F
1025      - defaults to viscAh
1026      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1027        friction or Leith) in non-hydrostatic mode, as long as there is
1028        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1029    o pkg/cost
1030      extend simple cost functions to treat time mean quantities
1031      (T,U,V) via cost_accumulate_state from cost_tile
1032    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1033        be 2 times larger than the minimum size the advection scheme requires.
1034        now get a perfect conservation of salt in advect_cs test-exp (updated)
1035    o GGL90 (Gaspar's TKE mixed layer)
1036      - add horizontal diffusion of TKE, requires exchanges in
1037        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1038        default. In OPA there is no horizontal diffusion of TKE but the
1039        mixing coefficients are computed from a horizontal average of TKE of
1040        6 points or so. I think that diffusion has a little more physical
1041        justification.
1042      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1043        was in vain)
1044      - mask tke-variable in ggl90_init
1045    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1046    o fix biharmonic diffusion on CS-grid.
1047    o more obcs stuff
1048      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1049        for reading boundary values. This routine is called from
1050        obcs_prescribe_read
1051      - updated obcs_check
1052      - changed sponge layer relaxation parameter units for days to seconds
1053      - turned off sponge layer by default
1054      - changed argument list of OBCS_CALC to myTime+deltaTclock
1055      - fixed about 35 bugs in obcs_external_fields_load
1056    
1057    checkpoint55c_post
1058    o obcs stuff
1059      - new runtime flags useOBCSprescribe, useOBCSbalance
1060      - re-arranged obcs_calc
1061      - moved exf_getobcs to obcs_prescibe_read
1062        obcs_prescibe_read is called after ORLANSKI stuff
1063        and independent of it (executable can contain all).
1064      - updated obcs_check
1065      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1066        These may be necessary only if tangential velocities are
1067        prescribed at OB, not sure, needs testing.
1068    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1069      which simplifies the calls and passes the ifc check-bounds test
1070    
1071    checkpoint55b_post
1072    o add a 2D scalar, Z location, exchange_2 routine.
1073    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1074      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1075      affects advect_cs results (for the wrong reason): update output.txt
1076    o use a more standard discretization for biharmonic viscosity ;
1077     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1078      affects results of dome set-up: update output.txt
1079    o fix gad_advection.F (CubedSphere part), back to version 1.23
1080    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1081    
1082    checkpoint55a_post
1083    o merged code to
1084      * prescribe/read time-dependent open boundaries
1085        (works in conjunction with exf, cal)
1086      * sponge layer code for open boundaries
1087      * each boundary N/S/E/W now has its own CPP option
1088        (healthy for the adjoint)
1089    
1090    checkpoint55
1091    o up-to-date adjoint of previous breaks
1092      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1093      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1094      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1095      - carbon: * remove tr1-related adjoint verification
1096                * add ptracer as control variable
1097    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1098      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1099    
1100    checkpoint54f_post
1101    o in verification/carbin/ remove experiment related to
1102      ALLOW_PASSIVE_TRACER (array tr1 etc)
1103      code_ad/ input_ad/ results_ad
1104    
1105    o add two new packages
1106      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1107        + subject to optimization (memory)
1108      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1109        + subject to reordering (many GOTOs in the original code)
1110        + so far opps is called for every (i,j) point, and then operates in
1111          the vertical; one may want to reorder the scheme in order operate in
1112          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1113          fields)
1114    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1115      - all verification tests compile and run with linux_ia32_g77
1116      - defaults are compatible with current input files--nothing
1117        should change if you were not previously using MNC
1118      - MNC output has been added in numerous places (eg. timeave)
1119        but there are still a few writes not yet do-able with MNC
1120        (this is in progress)
1121      - flags now allow for either/or/both use of MDSIO and MNC and
1122        documentation will soon follow
1123      - numerous small formatting cleanups for ProTeX
1124    o add version info (via BUILD_INFO.h) to MNC and stdout
1125    
1126    checkpoint54e_post
1127    o add two new packages
1128      - pp81 (Packanowski and Philander, 1981), Richardson number and
1129        stratification dependent mixing
1130      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1131      - these scheme operate in a similar manner as KPP (without ghat, of
1132        course), however there is only one diffusivity that is used for both
1133        temperature and salinity (and passive tracers)ç
1134    o add offline package
1135    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1136      provided by Stephanie Dutkiewicz
1137    o genmake2: add ability to search for C compilers and cleanup test output
1138      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1139    
1140    checkpoint54d_post
1141    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1142    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1143      leading to additional shift by 5 days each year of integration
1144       (i.e. leading to considerable offset over the years)
1145    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1146    o start with no AB and no initial filtering (staggerTimeStep):
1147      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1148    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1149      (external loading & cpl import/export stay in forward_step.F)
1150    o update coupling interface to work with new staggerTimeStep
1151    o change MDSIO ptracers_pickup.
1152    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1153    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1154    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1155    
1156    checkpoint54c_post
1157    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1158      this affects (truncation error) output.txt of test-exp:
1159       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1160    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1161    o change Qnet to always be the net heat flux, (+upward).
1162      affects (truncation error) output of natl_box exp.: updated
1163    o define the max number of passive tracers in PTRACERS_SIZE.h
1164    o start to test mnc routinely in exp0
1165    o add sea-ice loading (sIceLoad) as a new forcing field.
1166    
1167    checkpoint54b_post
1168    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1169       impressive on Altix and Opteron systems)
1170    o diagnostics can now write NetCDF files through the mnc package
1171    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1172    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1173    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1174      affects (truncation error) output of lab_sea & natl_box exp.: updated
1175    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1176    
1177    checkpoint54a_post
1178    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1179    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1180    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1181    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1182      + internal_wave (shift in writing cg2d_ini_res)
1183    checkpoint54a_pre
1184    
1185    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1186      - modified verification/lab_sea and natl_box_adjoint accordingly
1187    
1188    checkpoint54
1189    checkpoint53g_post
1190    o prepare splitting of thermodynamics: store convect.counter in common block
1191    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1192      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1193    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1194    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1195    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1196    o restore adjointability
1197    
1198    checkpoint53f_post
1199    o modifications that affect AIM experiment results (update output.txt):
1200      - no advection of S at top interface Nr (pkg/generic_advdiff)
1201      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1202    o AIM pkg:
1203      - include stability function into surf.Flux derivative relative to Tsurf
1204      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1205    
1206    checkpoint53e_post
1207    o merged cylindrical coord configuration
1208    o added rotating_tank experiment
1209    checkpoint53e_pre
1210    
1211    checkpoint53d_post
1212    o faulks upgraded: re-generate output.txt that have changed:
1213       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1214    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1215    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1216    o added Sadourny discretization of Coriolis
1217      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1218      - re-enabled use of omega3 (useAbsVorticity)
1219    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1220      vector-invariant equations
1221      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1222    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1223      hopefully without new bugs
1224      - still to do: biharmonic friction for non-hydrostatic w
1225    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1226    o regenerated output for global_ocean_ebm (using -ieee)
1227    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1228      of mom_common/
1229      - simple re-arrangement of instructions within computing loop
1230    checkpoint53d_pre
1231    
1232    checkpoint53c_post
1233    o new version of coupler for AIM+thSIce and Ocean models
1234     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1235     - land: change Evaporation of snow
1236     - aim with thSIce: fix bug in snow-precip.
1237    o changes to calc_gw.F
1238     - bug fix for w^2 term near the bottom boundary
1239     - (hopefully) improve the lateral slip boundary condtions for use with
1240        partial/looped cells
1241      - because the bug fix changes two verification experiments anyway (exp5
1242        and plume on slope), change the lateral boundary condition from half slip
1243        to the value of no_slip_sides
1244    o ebm package wasnt quite up to the parallel task. Fixed that.
1245    o Adjoint of EBM package + verification
1246      * TLM OK
1247      * ADM not sufficient accuracy yet (needs further testing)
1248    
1249    checkpoint53b_post
1250    o Commiting new energy balance model to repository
1251      * package is pkg/ebm
1252      * verif. is verification/global_ocean_ebm
1253      * references are in ebm_driver.F
1254    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1255    C        Global thermohaline circulation. Part I:
1256    C        Sensitivity to atmospheric moisture transport.
1257    C        J. Climate 12(1), 71-82
1258    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1259    C        Global thermohaline circulation. Part II:
1260    C        Sensitivity with interactive transport.
1261    C        J. Climate 12(1), 83-91
1262    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1263    C        Destabilization of the thermohaline circulation
1264    C        by atmospheric eddy transports.
1265    C        J. Climate 7(12), 1870-1882
1266    o Will need long integration testing.
1267    checkpoint53b_pre
1268    
1269    o created pkg/mom_common in preparation for variable viscosity code
1270    o renamed and split ini_mnc_io
1271    o pkg/land: only liquid water can diffuse or run-off
1272    o AIM using land: soil wetness availability account for snow
1273    o added printMapIncludesZeros to EEPARMS namelist
1274    
1275    checkpoint53a_post
1276    o restore TAMC compatiility for exf_constants.h
1277      (no usage of _d in .h)
1278    o Additional storing in KPP in an attempt to fix
1279      TAMC problem with adjoint of KPP code.
1280      (no success...)
1281      Identical code works fine with TAF.
1282    o Fixed verification/natl_box_adjoint experiments.
1283      Initial conditions for Experiments 4 and 5 are now
1284      set to "SEAICE_initialHEFF=0", which is more reasonable,
1285      and hence gives results closer to that of Experiment 2.
1286      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1287    
1288    checkpoint53
1289    o stable checkpoint with up to date adjoint
1290      TLM tests only run for 1st grdchk at the moment. Its unclear if
1291      this is a code problem or a problem with resetting code for g_
1292      variables that is being autogenerated wrong.
1293      Otherwise:
1294       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1295       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1296         are both still in chaos following their security messes.
1297    
1298    checkpoint52n_post
1299    o various build (mostly genmake2) changes including:
1300      - ability to build/run more easily within Cygwin and MacOS X
1301      - more complicated Makefiles with a stronger dependence on Gnu Make
1302    o pkg/seaice modifications
1303      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1304        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1305        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1306      - changed proxy for geostrophic velocity and updated
1307        verification/lab_sea/results/* accordingly
1308      - removed ADI dynamic solver from pkg/seaice
1309      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1310        they caused a segmentation fault under certain circumstances
1311      - removed unused field WATR
1312    o bug fix in exf-package:
1313      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1314         now reflect that.
1315    o small fixes in the cal-package:
1316      - set reference date to first of January for the 'model'-calendar
1317      - failing of cal_CheckDate in cal_FullDate now actually results in a
1318        warning
1319    o small modifications in exf-package to increase flexibility:
1320      - change climtempfreeze from a constant to a runtime parameter that
1321        is specified in data.exf_clim (default = -1.9)
1322      - introduce runtime parameter windstressmax (default = 2.0) that is
1323        specified in data.exf
1324    o fix in pkg/thsice:
1325      - update Evap (Tsf changes) to be consistent with Latent heat flux
1326      - maintain snow precipitation unchanged (even if Tsf >=0).
1327     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1328    
1329    checkpoint52m_post
1330    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1331      this does not change any of the results, because myIter=0 in swfrac always
1332      lead to jwtype=2 (the default anyway), but the call makes little sense
1333      as a default
1334    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1335    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1336      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1337    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1338    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1339    o extending useSingleCpuIO option to work with new exch2 I/O format
1340      - old-style, missing-tile I/O is still accessible by defining CPP
1341        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1342    o monitor package can write to NetCDF files and/or STDOUT
1343    o fix re-definition bug in MNC_GRID_INIT_ALL()
1344    o doc/api_reference added
1345      - a framework for building an API Reference Manual using all
1346        the "protex" comments embedded in the code
1347      - see pkg/generic_advdiff, pkg/mnc for examples
1348    o MNC:
1349      - make myThid the last argument for all subroutines
1350      - new default for the grid files: NO halos
1351      - add useMNC and other run-time flags
1352      - separate per-file-group handling of the unlimited dimension
1353      - early initialization of MNC w/ flags read at the eeboot stage
1354        and lookup tables set in initialize_fixed
1355      - write all MNC output to a freshly-created directory
1356    o thermodynamics sea-ice (thsice) is now tested with testreport.
1357    o test exp. advect_cs: use the standard cs32 grid ; update output.
1358    o Added functionality to grdchk:
1359      pick global i,j,k position (or nearest wet) where to perform check.
1360    
1361    checkpoint52l_post
1362    o new land formulation:
1363      a) use ground enthalpy as prognostic variable to ensure exact
1364         energy conservation.
1365      b) account for water temperature and for latent heat of freezing
1366         in all processes (rain, run-off, ground storage)
1367      c) compute surface and ground temperature implicitly.
1368    o aim_v23 modification for new land model:
1369      a) Treat separately land / ocean / sea-ice surface fluxes
1370         to allow implicit computation of land & sea-ice surface temp.
1371      b) add snow precipitation.
1372    checkpoint52l_pre
1373    
1374    o fix problem (when 1 tile is empty) in min/max monitor.
1375    o fix bug in timeAve (u,vZetatave in common block)
1376    o no restoring terms under ice for pkg/seaice
1377    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1378    o bug fix for pkg/seaice pickups
1379    o change MNC call locations and add coordinate attributes
1380    o mask vorticity at the corner ; affects global_ocean.cs output
1381    o fix ini_curvilinear_grid ; test CS experiments with mpi
1382    o aim.5l_cs: modify sea-ice fraction input file ; update output
1383    o exf: Adding simple range check routine for exf fields after read
1384    
1385    checkpoint52k_post
1386    o removed top-level directory "diags"
1387      - we migrated these functions to pkg/timeave a long time ago
1388    o fixed bug introduced in pkg/monitor
1389    o accuracy ctrlprec = 32 insuffient for gradient checks using
1390      averaged fields (I/O via cost_averages)
1391      -> use ctrl.h in active_file*.F to control I/O precision.
1392    o paramter list of CALL ADTHE_MAIN_LOOP
1393    o added initial do_the_model_io to ecco
1394    o set all ...Freq to zero after cost_final
1395      taveFreq, dumpFreq, pChkptFreq
1396    o MAIN and ECCO differentiability restored
1397    
1398    checkpoint52j_post
1399    o fix nchklev in tamc.h for global_ocean...
1400    o Bringing flow and store directives up-to-date
1401    o Really weird thing!
1402      call do_the_model_io from the_main_loop with parameters
1403      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1404      TAF places a faulty re-call of initialise_varia
1405      after cost_final call which should not be there!
1406    checkpoint52j_pre
1407    
1408    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1409      error messages
1410    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1411    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1412      debug output
1413    o modfied mdsio_writefield.F to handle non-global files under exch2
1414    o update AIM Cubed-Sphere exp (aim.5l_cs):
1415      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1416    o update AIM Equatorial Channel exp:
1417      use standard aim_v23 pkg and change the SST fields to be more realistic.
1418    o globalFile now works with exch2
1419    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1420      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1421    o limit timeave output for hi-res integrations
1422    
1423    checkpoint52i_post
1424    o removed CPP_EEOPTIONS.h from verification/*/code
1425    o updated the tiling for global_ocean_pressure
1426    checkpoint52i_pre
1427    
1428    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1429      the old pkg/aim).
1430    
1431    checkpoint52h_pre
1432    o shortened offending lines in exch2_send_rx?.template
1433    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1434    o genmake2: add build & execute test for NetCDF code
1435    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1436      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1437    o added useSingleCPUIO flag to monitor.F and mon_out.F
1438    o added temporary hack for sea-ice dynamics on the cube:
1439      metric terms are ignored and it is assumed that
1440      there is no sea-ice on cube faces 1, 2, 4, and 5.
1441    
1442    checkpoint52f_post
1443    o added exch2 cube routines to pkg/exch2
1444    o modified hs94.cs-32x32x5 to use it
1445    o added new grid files to hs94.cs-32x32x5
1446    checkpoint52f_pre
1447    
1448    checkpoint52e_post
1449    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1450      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1451    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1452      to work with implicit vertical advection and AB ;
1453    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1454    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1455     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1456    checkpoint52e_pre
1457    
1458    o fix bug in impldiff when Nr=1 or Nr=2.
1459    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1460    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1461    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1462      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1463    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1464    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1465    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1466    
1467    checkpoint52d_post
1468    o re-tiled many expts to allow comparison in multi-processor mode
1469      - updated output accordingly
1470      - changed hs94.128x64x5 to use intial T from file rather than use the
1471        random number generator
1472    o add infrastructure in model routines for fizhi and gridalt packages
1473    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1474    o changes to permit hi-res, cubed-sphere, configuration
1475      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1476      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1477      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1478        of surface winds for the cube
1479      (A verification experiment, based on global_ocean.cs32x15, but with
1480       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1481       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1482       complete with example surface forcing files and matlab scripts to look
1483       at the output and compare it with that of global_ocean.cs32x15.)
1484    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1485       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1486       to conform to the common rule.
1487    o check-in the first version of the coupler + interfaces for multi-components
1488       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1489       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1490       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1491       - ocean and atmos. share the same horizontal grid (no interpolation).
1492       - exchanges between component and coupler is done in forward_step
1493    o new verification experiment, cpl_aim+ocn:
1494       coupled ocean - AIM atmosphere on cs32 grid.
1495    
1496    checkpoint52d_pre
1497    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1498    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1499    
1500    checkpoint52c_post
1501    o Fixing OPTIONS files for use of exf:
1502      - ALLOW_ECCO not needed
1503      - ECCO_CPPOPTIONS.h should not be included from
1504        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1505        as has been the case in the past
1506      - All cal/exf related options are currently set in
1507        single header file. Should remain so until we
1508        agree on a consistent new policy.
1509    o Removed all CPP options for cal package.
1510      cal has no more CPP options.
1511    o modified STOREs in GAD_ADVECTION
1512    o corrected key comp. for passkey
1513    
1514    checkpoint52b_post
1515    o new version: "thsice" of thermodynamic sea-ice pkg:
1516     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1517     - modify fluxes but do not change theta directly;
1518     - light cleaning of bulk_force pkg (still needed with thsice).
1519     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1520       + output_thsice.txt to test thsice & bulk_force pkgs.
1521    o put back grid & coriolis monitor output.
1522    checkpoint52b_pre
1523    
1524    o call "do_the_model_io" at the beginning (=> dump initial state)
1525    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1526    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1527      (need info on NUMBER_OF_PTRACERS)
1528    o missing PTRACERS headers in some routines
1529    o default tamc.h in pkg/autodiff supposed to crash
1530      to ensure proper customization
1531    
1532    checkpoint52a_post
1533    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1534      - moved surfaceTendencyTice from pkg/seaice to main code
1535      - subroutine FREEZE_SURFACE now limits only surface temperature
1536        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1537        => new output.txt for global_ocean.cs32x15 & global_with_exf
1538      - keep the old version of FREEZE for backward compatibility;
1539        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1540      - corresponding modifs for TAF directives
1541    o added surface flux output variables to TIMEAVE_STATVARS
1542    o time-averaged output for pkg/ptracers
1543    o fix problem with ECCO-related divided adjoint
1544      snapshot file was missing some ad-variables,
1545      but no warning issued by TAF
1546    
1547    checkpoint52a_pre
1548    o some bug fixes for #undef REAL4_IS_SLOW
1549    
1550    checkpoint52 = ecco_c52_e35
1551    o after testing adjoints of checkpoint51u_post
1552    
1553    checkpoint51u_post
1554    o this is the post-merge tag of the ecco-branch
1555      (needs another clean checkout and re-testing)
1556    o various natl_box_adjoint configs and results
1557      but no input fields
1558    o obcs adjoint not yet merged!
1559    o adding ECCO global 1x1 and 2x2 degree configs
1560    o updated/extended some store directives for seaice
1561    o pkg/ecco now containes ecco-specific part of cost function
1562    o top level routines the_main_loop, forward_step
1563      supersede those in model/src/
1564      previous input data.cost now in data.ecco
1565      (new namelist ecco_cost_nml)
1566    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1567    
1568    checkpoint51t_post
1569    o this is the pre-merge tag of the ecco-branch
1570    
1571    checkpoint51s_post
1572    o cleanup: removed various obsolete #define-s
1573    o pkg/grdchk
1574      - renamed 'ph-grd 3' to 'grad-res'
1575      - merged from ecco-branch
1576        (remaining bug fixes for obcs gradient checks)
1577      - additional high-precision output for testreport
1578        (grep for 'precision_grdchk_result')
1579    
1580    checkpoint51r_post
1581    o cleaned up or removed CPP_OPTIONS.h files
1582    o updated results for some of the tests to reflect the new
1583      optfiles (-ieee: -O0 instead of -O3)
1584    
1585    checkpoint51q_post
1586    o cd_code:
1587      - moved cd_scheme.F -> cd_code_scheme.F
1588      - separate read_checkpoint from cd_code_ini_vars.F
1589      - separated cd_code part from write_checkpoint
1590      - updated AD_SOURCE, generated .flow
1591      - added CD_CODE_VARS.h to the_main_loop
1592      - Moving cd_code specific store dir.s to pkg/cd_code
1593    o ctrl package totally restructured
1594      - pack/unpack now optional and decoupled from
1595        xx_/adxx_ I/O
1596      - ctrl_pack/unpack cleaned
1597        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1598      - confined inclusion of AD_CONFIG.h to where necessary.
1599    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1600    
1601    checkpoint51p_post
1602    o create initial cd_code package
1603      - WARNING: the initialization of fields within packages
1604        is broken because INI_FIELDS (where READ_CHECKPOINT is
1605        called) is called *before* PACKAGES_INIT_VARIABLES.
1606        This seems to be backwards since
1607        1) its important to initially zero the entire field including
1608           the "halo" region
1609        2) zeroing needs to be done *before* reading pickup info
1610           and the pickup call might or might not happen in any
1611           particular run
1612      - this needs an overhaul for R2
1613    o cleanup verification/*/code/GMREDI_OPTIONS.h
1614    o cleanup testreport
1615    
1616    checkpoint51o_post
1617    o bringing AD-related verif's up to date with genmake2
1618      - carbon/
1619      - global_ocean.90x40x15/
1620      - hs.94.1x64x5/
1621      - (front_relax/ )
1622    o (more) consistent directory structure for AD-related verif.'s
1623    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1624    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1625    o bug fix in find_alpha.F for MDJWF:
1626      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1627        change rho -> rho-rhoConst
1628      - replace call find_rho to find_rhonum
1629    o initialisation of rFlx extended to full array (required by TAF)
1630      and shifted to thermodynamics
1631    o removed PTRACERS.h in ptracers routine
1632    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1633    o Correcting initialisations for fVerU, fVerV.
1634    o helping TAF to recognize dependency on kUp for
1635      fVerU, fVerV
1636    o Replacing delZ by delR in pkg/ctrl/
1637    checkpoint51o_pre
1638    
1639    o undid all of cp51 pending some cleanups and discussion
1640    o added the [#include "AD_CONFIG.h"] statement to all files that need
1641       it for adjoint/tl #defines
1642     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1643     o removed tools/genmake since it no longer works
1644    
1645    checkpoint51n_post
1646    o modifications to make FREEZE flux visible to pkg/kpp
1647      - moved surfaceTendencyTice from pkg/seaice to main code
1648      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1649      - subroutine FREEZE now limits only surface temperature
1650        (this means new output.txt for global_ocean.90x40x15,
1651         global_ocean.cs32x15, and global_with_exf)
1652    o added surface flux output variables to TIMEAVE_STATVARS
1653    
1654    checkpoint51n_pre
1655    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1656    o added [#include "AD_CONFIG.h"] to all files that use the following
1657      defines:
1658      - ALLOW_ADJOINT_RUN
1659      - ALLOW_TANGENTLINEAR_RUN
1660      - ALLOW_ECCO_OPTIMIZATION
1661    
1662    checkpoint51m_post
1663    o incorporating changes to get TAMC/TAF working in genmake2
1664      - added new TAMC/TAF targets to the Makefile
1665      - various cleanups related to package handling
1666      - these changes should have no impact on the forward model
1667    
1668    checkpoint51l_post
1669    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1670     - faster algorithm for cal_addtime.F
1671     - higher precision arithmetic, where needed
1672     - pkg/exf *startdate variables changed from calendar date to
1673       model integration time
1674    
1675    checkpoint51l_pre
1676    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1677    o enable to apply restoring on S & T only in a latitude band.
1678    o update output (external_forcing_surf modif. change truncation errors)
1679       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1680    
1681    checkpoint51k_post
1682    o change default to: useNHMTerms=.FALSE.
1683     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1684       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1685     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1686        exp1, ideal_2D_oce
1687     - change data file of oceanic exp (leave the results unchanged for now)
1688       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1689    o set gravitySign automatically according to the vertical coordinate used
1690      (and change sign: back to "logical" value: +1 when R increases downward)
1691    o added an include barrier to the default CPP_OPTIONS.h and
1692      removed the #include "PACKAGES_CONFIG.h" from it
1693    o fix a bug in mom_fluxform (from chk51j_post)
1694    
1695    checkpoint51j_post
1696    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1697    o adjusted some flow directives (dynamics, thermodynamics)
1698    o added cubed-sphere case to test cost function
1699    o heckpoint_lev?_directives.h now include
1700      pkg-specific directives, whenever those are enabled.
1701    o Moving pkg-specific flow directives to corresponding pkg
1702      Moving pkg-specific differentiation list to corresponding pkg
1703      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1704      ---> conventions are
1705           - pkg_ad.flow
1706           - pkg_ad_diff.list
1707           - pkg_ad_check_lev?_dir.h
1708    
1709    checkpoint51i_post
1710    o merge of the branch-genmake2
1711      - knowingly breaks the older genmake
1712      - automatic generation of all ALLOW_${PKG_NAME} defines
1713      - new testreport supersedes older testscript
1714    o large number of package inclusion and header cleanups
1715    checkpoint51i_pre
1716    
1717    o new output for adjoin of global ocean vector invariant
1718    o fix for checkpoint of thermodynamic seaice and bulk_force
1719    o Steph gchem various cleanups
1720    
1721    checkpoint 51h_pre
1722    o fixed some single quotes
1723    o modify gchem pkg to be more versatile
1724    o modifications to clean up dic pkg
1725    o add pkg/cfc
1726    
1727    checkpoint51g_post
1728    o provide links for ARPACK and ADM*TLM
1729    o start removing verification/vero/
1730    o update AD-related stuff
1731      (in particular some IF-statements in model/src/ routines)
1732    o adding to verification/global_ocean.90x40x15/ adjoint of
1733      vector invariant setup
1734    
1735    checkpoint51f_post
1736    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1737    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1738      of tracer Green's fucntions for ocean inversion project.
1739    
1740    checkpoint51f_pre
1741    o Added on-the-fly spatial interpolation capability
1742        "USE_EXF_INTERPOLATION" to pkg/exf.
1743      - This is a temporary Cartesian-grid hack until
1744        the super-duper ESMF coupler becomes available.
1745      - See verification/global_with_exf/README for usage example.
1746      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1747        flags and modified pkg/seaice accordingly.
1748    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1749        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1750        non-local transport term.
1751    
1752    checkpoint51e_post
1753    o pkg/mom_vecinv:
1754      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1755      - add time-ave diagnostic of vorticity advection.
1756    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1757    o atmospheric geopotential: - include water vapor effect;
1758                                - use p^kappa in p* scaling.
1759    o land pkg: read initial state from files.
1760    o AIM : add stratospheric drag in the upper level
1761    
1762    checkpoint51d_post
1763    o change function ILNBLNK (=> last non-blank char.) to return zero
1764      (instead of the string length) when the string. char is empty
1765    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1766    o modif's to restore TAMC compatibility
1767      - avoid "_d" constructs in PARAMETER declarations
1768      - avoid interrupting lines by comment lines
1769    o Use cluster local disks for purely local I/O
1770      vs. globally visible disks needed for ctrl stuff
1771      (merged from ecco-branch)
1772      - new active_file_loc... and mdsio_..._loc routines
1773      - affected packages: autodiff, ctrl, grdchk, mdsio
1774    
1775    checkpoint51c_post
1776    o introducing integer flag debugLevel
1777      - debLevZero: suppress all output
1778      - debLevA: standard
1779      - debLevB: equivalent to current debugMode=.TRUE.
1780    o introducing pathname variable mdsioLocalDir for mdsio
1781      that can be specified at runtime
1782      (relevant for cluster I/O to local disk)
1783    `
1784    >>>checkpoint51b_post
1785    adjoint of ptracers
1786    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1787    o extended state in checkpoint_lev?, etc.
1788    o alternative ctrl/cost with tr1 or ptracer
1789    o new comlev1_bibj_ptracers
1790    o new ptracers.flow
1791    o made ptracers_forcing same as external_forcing_s
1792    o added verification for adjoint with ptracers
1793      - adm. grdchk fail so far
1794      - tlm. grdchk OK
1795      - checked tapelev/comlev recomputations: OK
1796    <<<checkpoint51b_pre
1797    
1798    checkpoint51a_post
1799    o added code for biogeochemistry package
1800      - new pkgs: dic, gchem
1801      - new subroutine in ptracers
1802    o modify code for biogeo packages
1803      - in model/src and pkg/ptracers
1804    
1805    checkpoint51
1806    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1807      - autodiff, ctrl, exf, grdchk, seaice
1808      kept separate packages
1809      - cost, ecco, obcs
1810    o updating verification/internal_wave, verification/lab_sea
1811      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1812    
1813    checkpoint50i_post
1814    o Preparing next differentiable checkpoint and sync
1815      of MAIN vs. ecco-branch
1816      - 1st step: this one is differentiable
1817      - 2nd step: next(! not this) checkpoint will have updated packages
1818                  from ecco-branch)
1819    
1820    checkpoint50h_post
1821    o new package "land": provide surface BC for AIM.
1822    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1823    o AIM: use true log-P extrapolation for near surface temp (= as in
1824        F.Molteni paper) ; update aim.5l_cs output.
1825    o New variable in PARM03 for more flexible pickups
1826    o somewhat cleaned package initialisation sequence for
1827      ctrl/ cost/ ecco/ in packages_... routines
1828    
1829    checkpoint50g_post
1830    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1831      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1832      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1833        made the default because of faster convergence than ADI
1834    
1835    checkpoint50f_post
1836    o exf totally restructured
1837      - replaced all exf_set_ routines by one generic exf_set_gen.F
1838        and made sure it's still differentiable
1839      - split exf_getffields.F into new exf_bulkformulae.F
1840      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1841      - updated adjoint/makefile and relevant verif. accordingly
1842    
1843    checkpoint50f_pre
1844     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1845          + change Evap over land. (update aim.5l_cs output)
1846     o added missing .cvsignores and made uniform across expts
1847     o changed configuration of tidal_basin_2d expt
1848     o added pkg/debug functions for tracing code in fatal crashes
1849     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1850     o new fn in pkg/monitor to stop model if solution grows too big
1851     o removed lots of single quotes from comments
1852    
1853    checkpoint50e_post
1854    o make KPP work with PTRACERS
1855     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1856       nearly a copy of kpp_transport_s
1857     - there is no analogue to SurfaceTendencyS, so I have to use
1858       gPtr(of the surface layer) instead
1859    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1860    checkpoint50e_pre
1861    
1862    checkpoint50d_post
1863    o change kpp output from multiple-record state files to single-record state
1864      files analogous to write_state.F
1865    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1866      analogous to the cg2d-related output.
1867    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1868      so that writing to internal file fn (with length 512) fails.
1869    checkpoint50d_pre
1870    
1871    checkpoint50c_post
1872    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1873    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1874    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1875    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1876    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1877    
1878    checkpoint50c_pre
1879    Merging from release1_p13:
1880    o bug fix for pkg/seaice dynamic solver
1881    o Added SEAICE_initialHEFF to pkg/seaice
1882    
1883    checkpoint50b_post
1884    o store u*,v* in gU,V instead of in guNm1,gvNm1
1885    o in order to put the momForcing out of the Adams-Bashforth:
1886      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1887      to timestep.F
1888    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1889    o re-generate output for highly sensitive test-exp:
1890       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1891    
1892    checkpoint50b_pre
1893    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1894  o corrected CPP option mismatch in exf_Bulk... functions for case  o corrected CPP option mismatch in exf_Bulk... functions for case
1895    #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP    #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1896    

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