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revision 1.76 by jmc, Fri Jul 12 14:52:08 2002 UTC revision 1.724 by heimbach, Wed Sep 6 18:31:32 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    
8    o shelfice:
9     - fix a sign error so that no slip at shelfice interface works
10     - remove stop for combination non-hydrostatic code and shelfice. That does
11       not mean, that the results are correct, but at least they are numerically
12       stable
13    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
14    o added adjoint exch routined for all exch*3d* routines
15      and updated flow directives
16    
17    checkpoint58o_post
18    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
19      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
20    o change controling S/R for writing pickup file (new S/R do_write_pickup)
21      and clean-up reading/writing of pickup files.
22    o fix local version of read/write pickup (NH part) in rotating_tank/code
23    o simplify EXCH interface:
24     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
25     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
26    o added the regrid package
27    o shelfice:
28     - add a simple boundary layer scheme to reduce noise
29     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
30    
31    checkpoint58n_post
32    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
33       local variable (not in common block).
34    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
35      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
36      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
37        to work with SingleCpuIO.
38    o add "_d 0" to real constant of pkg/cfc subroutines ;
39       update exp. cfc_exemple & tutorial_cfc_offline output files.
40    o multi-threading and IO:
41      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
42        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
43      - barrier before and after reading.
44      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
45      - avoid using MDS_WRITELOCAL for LAND pkg output.
46      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
47        common-block variables ; Allows multi-threading with master-thread IO.
48    o change default MAX_NO_THREADS from 32 to 4 ;
49      and stop cleanly when MAX_NO_THREADS is too small.
50    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
51    
52    checkpoint58m_post
53    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
54       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
55    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
56       keep global_ocean.90x40x15 (for AD testing) with former secondary test
57       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
58    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
59        add MITgcm_tutorials (= code + all the tutorials)
60    o ecco, option to compute cost for total ssh (mean+anom)
61    o consistent with addition of ptracer and ssh in pkg/profiles
62    o profiles: adding ptracer and ssh
63    o testreport: change multi-test output-file name
64      (from output.txt.{name} to output.{name}.txt)
65    o profiles: now ok for mutli-tiles case
66    o seaice: add 4 parameters for different advection schemes for area,
67      (effective) seaice thickness, enthalphy, and snow height. Their default
68      is the standard parameter SEAICEadvScheme
69    o calc_gw:
70     - add cosFacU in zonal viscous flux (harmonic.visc.).
71     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
72       of tutorial_plume_on_slope.
73    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
74    o calc_gw: true flux-form, account for horizontal grid spacing.
75      update rotating_tank results, but not plume_on_slope (affected at
76      truncation level, 11 digits).
77    
78    checkpoint58l_post
79    o calc_gw:
80     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
81     - remove side-drag for now (need to fix it); update plume_on_slope results.
82     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
83    o commit code to make SST/SSS weights spatially variable
84      (based on either variable in-situ or variable initial T/S weights)
85    o pkg/ecco:
86      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
87        now based on horizontally varying weights wthetaLev, wsaltLev
88      * cost_averagesflags now returns year indices in addition to day, month
89      * sflux balance is performed on annual basis
90        (sflxumm, sfluxmm2, bal_sfluxmm)
91      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
92        including separate counting and multipliers
93    o pkg/rbcs
94      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
95    
96    checkpoint58k_post
97    o testreport:
98     - always build in dir. "build" (if not there, mkdir build instead of building
99       & running in input)
100     - run in dir run (if it exists), in build otherwise.
101     - call prepare_run (if input/prepare_run exists)
102     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
103    o pkg/exf modifications to interpolation and rotation routines for more
104       reasonable treatment of North Pole singularity: for tracers North Pole
105       value is set to northernmost zonal-mean value, for zonal velocity it is
106       set to zero, and for meridional velocity it is set to northernmost value.
107    o pkg/exf/exf_check_range.F
108     - add tile index to diagnostics and move stop statement to the very
109       end of the routine.
110    o pkg/diagnostics: (diagnostics_main_init.F)
111      define title of isomorphic variables according to the current config.
112    o pkg/thsice with pkg/seaice dynamics:
113    - fix domain of computation (interior only, required for exf) and do exchanges
114    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
115    o towards a standard way of dealing with multi-threading in MONITOR
116      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
117    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
118       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
119    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
120    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
121    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
122       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
123    o tracer advection:
124     - clean-up and simplify calc_common_factors.F
125     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
126       advection subroutine (but still not used within DST advection S/R)
127    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
128    
129    checkpoint58j_post
130    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
131      from file (collects calls previously in FORWARD_STEP)
132    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
133    o adjoint store dir. adjusted accordingly
134    o genmake2
135      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
136    
137    checkpoint58i_post
138    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
139      on wind stress (SEAICEstressFactor defaults to 1.)
140    o Total number of Timers is finite (<=40): comment out 2 non-essential one
141      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
142    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
143      on CS-grid: no longer loosing mass.
144    o exf & curvilinear-grid: no longer modify longitude xC & xG.
145    o pkg/ggl90: fix sloppy output and fix a bug
146    o pkg/seaice: added SEAICEuseEVPpickup parameter
147      - Set to false in order to start EVP solver with
148        non-EVP pickup files when using SEAICEuseEVP
149      - fix sign error in diffusion in seaice_calc_rhs
150    
151    checkpoint58h_post
152    * Modifications for bottom topography control
153      o replace hFacC by _hFacC at various places
154      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
155      o add non-self-adjoint cg2d_nsa
156      o update autodiff support routines
157      o re-initialise hfac after ctrl_depth_ini
158      o works for 5x5 box, doesnt work for global_ocean.90x40x15
159    * Adding verification for 5x5 box (4-layer) bottom topography control
160    
161    checkpoint58g_post
162    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
163       used for mean seasonal cycle, mean diurnal cycle); add an example
164       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
165    o pkg/ggl90:
166      - add parameter (minimum surface kinetic energy)
167      - fix bug (avoiding division by zero)
168    o couple pkg/thsice to pkg/seaice:
169      - modify advection in seaice to accomodate new scalar fields to be advected
170      - only muliDimAdection scheme work with seaice/thsice
171      - mapping of thsice-variables to seaice-variables, back and forth
172      - does not break the verification experiments, but does not give the
173        desired results either
174    o pkg/seaice
175      - make (default) second order advection a bit less confusing?
176    
177    checkpoint58f_post
178    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
179      to pkg/seaice):
180      - new routines thsice_map_exf and thsice_get_exf provide the interface
181      - add an additional formal parameter to thsice_solve4temp
182    o pkg/exf:
183      - add new fields wspeed, snowprecip (to be able to couple to thsice)
184      - correct Stefan-Boltzmann constant
185      - new parameter for longwave surface emittance
186      - separate some stuff from exf_bulkformulae into new routines  
187        exf_radiation, exf_wind
188      - add new parameters and constants: longwave emissivity for ocean, ice
189        and snow, evaporation parameters over ice
190      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
191        either wind from stress or stress from wind
192    o pkg/thSIce:
193    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
194    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
195       and THSICE_CALC_THICKN
196    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
197    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
198      to make debugging easier.
199    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
200    o pkg/bulk_force:
201      - clean-up comments and parameters ;
202      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
203    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
204      generate new output for test-experiment: aim.5l_cs.thSI
205    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
206      testreport accordingly
207    
208    checkpoint58e_post
209    o SEAICE_CGRID adjoint done
210    o R_STAR adjoint implemented.
211      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
212      * need to sort out init. of h0facc, etc.
213    o Make pkg/profile fully independent of ecco,cost, etc. stuff
214      to be able to use it in pure forward.
215    
216    checkpoint58d_post
217    o upgrade simple test-experiment to tutorial example:
218     step.1: duplicate the experiment and (step.2) will remove the old copy.
219      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
220      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
221      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
222      tutorial_global_oce_biogeo    <- copy of dic_example
223      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
224      tutorial_plume_on_slope       <- copy of plume_on_slope
225      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
226      tutorial_global_oce_optim     <- empty for now (David ?)
227      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
228     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
229    o correct a sign problem in cost_scat.F
230    o obcs and ptracers: fix boundary conditions for advections schemes
231      with larger stencil
232    o thsice adjoint: start
233    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
234      completeness
235    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
236      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
237    o ptracers adjoint:
238      * avoid extensive recomputatations
239      * fix missing re-init. of gptr (missed by TAF)
240    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
241      me to turn off the excessive output to STDOUT that this package produces
242    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
243      and add those terms in Vector-Invariant formulation.
244    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
245      if the control period (xx_hfluxperiod etc) is 0
246    o in profiles pkg, clean routines and fix details
247    o in ecco pkg, reading ssh data:
248      fix problem in case the model does not start at iter0=0
249    o fix mnc-pickup/restart for ptracers
250    o new package prifiles:
251      code to compute profile-based cost by Gael Forget
252      (modifs in ecco, ctrl, autodiff)
253    o Benign bug fix in initialization (spotted by M. Mazloff) of
254      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
255    
256    checkpoint58c_post
257    o adjoint: finish NLFS adjoint and provide reference output in
258      verification/global_ocean.90x40x15/results_ad_nlfs
259    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
260      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
261      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
262      with SEAICE_CGRID defined.
263    o move calendarDumps from "data" to "data.cal" and clean-up the code
264      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
265    o add useEXF & useCAL flags (for now, set in hard-coded way)
266    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
267      (were missing in NH mode, and wrong in quasihydrostatic mode).
268      waiting for Chris updated version of calc_gw to add those CALLs.
269    o fix bug in quasihydrostatic S/R ;
270      add a test for this option: global_ocean.90x40x15.qshyd
271    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
272      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
273    o add on/off flag useOffLine for package OFFLINE
274    o seaice:
275      - modify advection so that it works also on the C-grid
276      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
277        problem in multi-tile runs with C-grid
278      - add flags for clipping ice velocities and/or masking solver forcing
279      - fix drag (ocean on ice) formulation and a bug that caused noise in the
280        C-grid solver
281      - added a few comments to seaice_diffusion.F
282      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
283        are now exclusive)
284      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
285        required re-ordering the code a little:
286       + make DAIRN global variable (defined in SEAICE)
287       + move computation of the viscosities eta and zeta into a new separate
288         routine (because I need to recompute them in seaice_ocean_stress.F)
289    
290    checkpoint58b_post
291    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
292      update output.txt of exp. aim.5l_cs.thSI
293    o various mnc cleanups and improvements:
294      + shrink lookup tables by factor of ~4
295      + better error reporting when running out of lookup space
296      + able to handle longer path/file names (up to 500 chars)
297    o adjoint:
298      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
299      - TBD: "hidden" mom_vecinv recomp. in dynamics
300    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
301     (allow to differentiate between forcing components using new integer flags:
302      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
303     and add new flag to put Dissipation tendency out of Adams-Bashforth.
304    o ecco
305      - enable trend removal from SSH anomaly obs.
306    o adjoint
307      - a fix for PmEpR when #undef EXACT_CONSERV
308      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
309      - try to fix "hidden" recomp. in forward_step for NLFS
310        (NLFS seems broken sometimes after I checked it in)
311    o seaice:
312     - add c-grid version of the dynamic solver:
313       + three new routines that are the c-grid substitute lsr, dynsolver
314         and ostres
315       + put a few fields that were local to dynsolver into global common
316         blocks, so that I can move the computation of stresses etc into
317         seaice_lsr (saves coding but may break the adjoint).
318     - replace more hardwired parameters by runtime parameters
319     - add ice masks that mask the rhs of the implicit solvers where there
320       is no ice (commented out in seaice_dynsolver, because i am not sure
321       if this works properly), eventually this should replace the clipping
322       of ice velocities in seaice_dynsolver to +/-40cm/s.
323    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
324      include it only where its needed
325    o move balancing of fluxes before the call of external_forcing_surf
326    o seaice:
327      - correct units of turning angles (now they are really in degrees)
328      - move computation of GWATX/Y out of main routine into dynsolver
329      - initialize GWATX/Y in seaice_init
330    o Apply mask on Fresh-Water flux (needed for SSH forcing).
331      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
332    o seaice: add runtime flags for turning angles (default to zero)
333    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
334      and trend from exf forcing and ctrl control adjustments
335    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
336      (since checkpoint57x_post)
337    o change the default rotation period to 86164.s = the Earth rotation
338    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
339      and based on a reference stratification. Tested within hs94.cs-32x32x5.
340    o seaice advection: add code for choosing between the default (2nd order
341      central differences) and multiDim advection schemes provided by
342      pkg/generic_advdiff
343    o seaice:
344      - removed all references to SEAICE_GRID.h fields from
345        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
346        (cubed-sphere configuration will change a little)
347      - grid computations in seaice_init are obsolete now.
348      - cleaned up code a little so that is easier to read (hopefully).
349      - added new (better?) discretizations of default advection and diffusion
350        (turn on with SEAICEuseFluxForm)
351      - replace 1 in 3d global fields by kSurface in growth.F
352      
353    checkpoint58a_post
354    o seaice:
355      - bug fix in advect.F
356    o shelfice:
357      - separate shelfice load anomaly from pload (breaks with time
358        dependent forcing), => introduce constant field shelficeLoadAnomaly.
359        Its default is 0., but it may be computed more cleverly from (unknown)
360        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
361        done offline. A good approximation of the pressure load anomaly is
362        necessary to avoid large initial adjustment processes underneath
363        deep-reaching shelfice.
364      - small fix in ISOMIP shelfice_thermodynamics
365      - add more sophisticated thermodynamics of Hellmer (1989), this is
366        now the default
367      - give a few constants more intuitive names
368    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
369      if bulk formulae are used in long integration (especially EmPmR). Turn
370      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
371      if balancePrintMean, the imbalance that is substracted is printed to
372      STDOUT.
373    o fix bug (typo) in obcs_apply_eta.F
374    o add a new package shelfice which enables us to model the circulation
375      underneath shelf-ice with draughts of hundreds of meters.
376     - works
377     - to do: + include improved thermodynamics
378              + check whether kSurfC (from model/inc/SURFACE.h) can be used
379                instead of new field kTopC
380              + can we use topoFile, Ro_surf and existing code in ini_depth.F
381                instead of new field R_shelfIce and new code in ini_depth.F
382                and ini_mask_etc.F?
383              + adjust vertical mixing schemes?
384    o seaice pkg:
385     - add a cpp-flag to include a simple formula for a salinity dependent
386       freezing point of sea water at the surface
387     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
388       meridional stresses are now different (and hopefully correct)
389    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
390       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
391       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
392    o pkg/diagnostics: add options and parameters for regional-statistics
393       diagnostics ; define regions by reading a region-mask from a file
394       (might add other options later)
395    o pkg/bulk_force:
396     - add option and parameters to use AIM surface-flux formulae.
397     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
398       others forcing fields (defined in PARM05, parameter file "data") are loaded
399       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
400     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
401     - use the right EXCH call for uwind,vwind (to work on CS-grid).
402     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
403       and parameters (note: calcWindStress replaces .NOT.readwindstress).
404     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
405    
406    checkpoint58
407    o add "--embed-source" option to genmake2 which, when the supporting
408      tools can be compiled (as determined by genmake2) will turn on the
409      embed_files package which then embeds the entire MITgcm source code
410      (*.[fFhc] + Makefile) used for the build within the executable
411      - requested by CNH but off by default
412      - adds a paltry <9MB to the mitgcmuv executable in most cases
413      - only writes the output when useEMBEDSRC in eedata is true
414    o clean up 3-dim. relaxation codes:
415      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
416      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
417      * Thanks to Tom Haine for testing!
418    
419    checkpoint57z_post
420    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
421      affects output (@ truncation level) of exp. plume_on_slope ; updated.
422    o fix the pickup behavior for obcs in combination with ptracers
423    o fix a bug in ptracers_external_fields_load
424    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
425      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
426    o transfered surface NH pressure to eta field (if exactConserv).
427    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
428         and update lab_sea output.txt file.
429    o completing 3-dim. relaxation code: additional term
430         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
431      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
432      * At compile time, in "EXF_OPTIONS.h" set
433          #define  ALLOW_CLIMTEMP_RELAXATION
434          #define  ALLOW_CLIMSALT_RELAXATION
435      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
436          tauThetaClimRelax3Dim = 15552000.0,
437          tauSaltClimRelax3Dim  = 15552000.0,
438      * 3 cases:
439          1) Use a constant-in-time 3-dim. field
440          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
441          3) Real-time relax. to time-evolving prescribed field
442    o Adding Laplacian-type smoothness constraint on
443      initial and boundary (forcing) controls (ic, bc)
444      * enable at compile-time via
445        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
446      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
447      * Absolute scale somewhat unclear so far
448      * no area weighting was included since no other cost term does so far
449    
450    checkpoint57y_post
451    First step for a NLFS adjoint
452    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
453    o new init. routines for calc_r_star, calc_surf_dr
454    o still need to deal with ini_masks_etc
455    o testreport seemed happy
456    checkpoint57y_pre
457    
458    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
459    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
460    o add new offset feature to offline pkg (plus minor cleanup)
461    o cfc fixes for final year of integration
462    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
463      be in GCHEM_OPTIONS).
464    
465    checkpoint57x_post
466    o fix testreport Pb in multiple test experiment.
467    o cleanup our namelist syntax in verification:
468      - make it more F95 standards compliant (some work still needed)
469      - allows the vast majority of our tests to work with gfortran
470    o Non-Hydrostatic:
471     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
472     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
473    o Allow to apply AB on T,S rather than on AB(gT,gS):
474     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
475     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
476       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
477     - need a "clever" read_pickup to restart from the other AB formulation
478    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
479    o remove some unused variables (reduces number of compiler warnings)
480    o adjoint
481      * Disable useVariableViscosity for adjoint for time being
482        (there are a number of extensive recomputations)
483      * Initialize certain variables needed for adjoint
484    
485    checkpoint57w_post
486    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
487                 fix the singleCpuIO RS version of MDSWRITEFIELD
488       and add a WARNING if using globalFiles=T with multi-processors.
489    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
490      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
491    o tracer advection scheme:
492      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
493       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
494       was not very convenient).
495      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
496       (further tests needed for the implicit DST & Flux-Limiter schemes).
497    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
498      and sRef for convenience, handy, when you want to initialize
499      ptracers in a large domain with a constant non-zero value. Also,
500      untangle ptracers_init.F a little.
501    
502    checkpoint57v_post
503    o change dome exp. to use variable viscosity in side-drag terms.
504    o remove all the files from the cfc_offline test since they are now
505      incorporated into tutorial_cfc_offline which has been producing
506      identical results for a few days of testing
507    o add new parameter: sideDragFactor to enable half-slip-side BC
508      and change side-drag S/R to use viscosity from mom_calc_visc
509      (can switch back by setting sideDragFactor=0.); affects results at
510      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
511       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
512    o vorticity & strain are now computed without masking, to account for
513      no-slip-side BC in variable viscosity calculation ; mask is applied
514      anyway later on, before computing advection/coriolis terms.
515    o modify exp4 to test new obcs support for reading from external files
516      and for passive tracers
517    o fix behavior of ptracers_monitor when monitor output is written to a
518      netcdf-file; still not independent of monitor.F (writes in the same
519      file).
520    o change default value of tRef (put a uniform, meaningful value for ocean
521      & atmos) and initialize sRef (was missing, as Martin mentioned).
522    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
523      to be proportional to enstrophy dissipation length.  Thus,
524       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
525      This is now consistent with Smagorinsky and with the manual.
526    
527    checkpoint57u_post
528    o OBCS and PTRACERS: add open boundary support for passive tracers
529      - either use homogenous (pseudo) v.Neumann conditions or prescribe
530        OB-values from file; this is not different from the way theta and salinity
531        are treated
532      - however, Orlanski-radiation conditions are not supported, and the model
533        will stop if you use pTracers and Orlanski at the same time.
534      - beefed up the rountine obcs_external_fields_load: now only those open
535        boundary values are overwritten with values from files for which there
536        are really files, otherwise the OB-fields remain untouched. This makes
537        it possible to use different OBs at different ends of the domain (as
538        with EXF)
539    o reduce number of exch calls in shap_filt (s2).
540    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
541      truncation level) 4/5 MLAdjust test results (11&12 digits match).
542    
543    checkpoint57t_post
544    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
545    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
546      same truncation, independent of the face number: affects affects several
547      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
548    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
549      note that biharmonic viscosity + no-slip was not tested in any experiment.
550    o fix bug in non-linear free-surf side-drag ; generate new output for
551      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
552    o make mnc honor the writeBinaryPrec flag for most kinds of output
553    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
554    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
555      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
556    o add brackets in multi-terms sum to get same truncation, independent of
557      the face number (manage to get exactly same value of gU,gV at the cs-edge)
558      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
559    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
560      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
561      a maximum grid-scale Reynolds number.  Also, changes all length calculations
562      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
563      Suggested values of viscosity parameters found in mom_calc_visc.
564      Many new viscosity diagnostics available.
565    
566    checkpoint57s_post
567    o Add clearing-house for viscosity calculations, mom_calc_visc and
568      correct numerous bugs in LeithD and Smagorinsky discretizations.  
569      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
570      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
571      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
572      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
573      The Strain-Tension form is now called with useStrainTensonVisc=.true.
574      ViscAhStrain and viscAhTension are now retired.
575    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
576    o In response to JMC's bug report, genmake2 now ignores any soft-links
577      that it finds in the *current* directory when searching for files.
578      Soft-links found in any other source directories will still work as
579      they did before.
580    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
581      a C routine to unlimit the stack size
582    o mnc-ify pkg/aim snapshot vars
583    o mnc-ify pkg/land as requested by Daniel
584    o various changes to mnc including:
585      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
586      - output can now be grouped so that all files within a group
587          change the ITER portion of their names in lock-step together
588      - can now read ("global") PER-FACE (in addition to PER-TILE) files
589          and works with both EXCH1 and EXCH2 (but needs more testing)
590      - writing works for all verification test cases w/ g77 on Linux
591    
592    checkpoint57r_post
593    o make MNC variable initialization happen earlier
594    o add diagnostics for (almost) each term of the momentum Eq.
595    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
596    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
597    o remove MINIMAL_TAVE_OUTPUT option ;
598      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
599    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
600      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
601    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
602    o add time-dependent SST, SSS control
603    o cost terms in ecco/ modularized (new cost_generic.F)
604    o cost_averages routines are modularized (new cost_averagesgeneric.F)
605    o new infrastructure for seaice model vs. obs misfits in seaice/
606      * driver from the_main_loop.F is seaice_cost_driver.F
607      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
608      * gradient check in Exp. 6a of natl_box_adjoint/
609    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
610      (see README file)
611    
612    checkpoint57q_post
613    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
614    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
615      - bug was reported by Jean-Michel and Ian Fenty
616    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
617      update exp. cpl_aim+ocn output.
618    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
619      Needed for high-res. runs with large global files
620      to be able to limit tapelev size
621    o Changed some tests for adjoint:
622      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
623      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
624      * global_ocean.90x40x15/ back to default 3-level checkpointing
625    o Modifications to enable scripted COMMON to MODULE conversion
626      * verification/OpenAD/code/ has necessary scripts and description;
627      * converts, compiles and runs successfully;
628    
629    checkpoint57p_post
630    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
631    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
632      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
633    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
634    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
635      (was already the case for dissipation with mom_vecinv,
636       and also the case for grad.PhiHyd when staggered-timeStep)
637      This will allow to put dissipation out-off the AB time-stepping.
638     Unfortunately, affects truncation error. Update output of exp. that "fails"
639      (cg2d matching number) and leave the others for later: front_relax(10),
640      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
641      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
642    
643    checkpoint57o_post
644    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
645      (2) its ready to be documented during the 20050801 DocFest
646    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
647      for ideal_2D_oce and lab_sea on linux_ia32_g77
648    o set to #undef CTRL_SET_OLD_MAXCVARS_30
649      in global1x1_tot/code_seaice_adj to access indices 32, 33
650      (worth another tag)
651    
652    checkpoint57n_post
653    o adding precip control xx_precip 32
654    o adding swflux control xx_swflux 33
655    o Replacing 10 forcing penalty cost routines by 1 generic.
656    o Implementing partitioning in time-mean and variable adjustment
657      for atmos. state.
658    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
659    o in natl_box_adjoint:
660      * updated exp 1 to 10
661        (but does not have time-mean vs. variable split results yet)
662    o updated global1x1/*_seaice_adj/
663      to incorporate latest changes
664    o enable useSingleCpuIO for mdsio vector routines
665      (applies in particular to tapelev I/O)
666    o removed inefficient K-loop in all active_file*control*.F
667    
668    checkpoint57m_post
669    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
670      and advect_cs (use EXCH-2 and standard cs-32 grid files).
671    o pkg/exch2: filling of face-corner halo regions is optional
672      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
673    
674    checkpoint57l_post
675     tag before updating tutorials (pre-release-2)
676    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
677       for output and interpolation of input fields onto model grid)
678    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
679       Affects results of exp. rotating_tank ; update output.txt.
680    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
681          and taking the square quantity and/or using a fraction-weight field.
682    o fix aim_diagnostics_init.F mate numbers.
683    o add mnc output capability to diagnostics/diagstat and update
684      our cvsignore files for the ACSII output generated
685    
686    checkpoint57k_post
687    o lab_sea now uses diagnostics package and provides a suite of
688      new EXF diagnostics output.
689    
690    checkpoint57j_post
691    o exf
692      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
693        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
694        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
695      * extended diagnostics output
696        - now includes all EXF variables
697        - hs, hl moved to common block
698        - separate S/R for diagnostics, called after ctrl vector is added
699        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
700        - EXFqnet contains true Qnet (i.e. includes qsw)
701      * updated verif. lab_sea, global_with_exf
702      * Rearranging hflux (exf_mapfields -> exf_getforcing)
703        to ensure that diagnostics sees a true EXFqnet
704    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
705    o diagnostics pkg: change pointers so that 1 diagnostic can be used
706      several times with different frequencies.
707    o mnc-ify the thsice package as requested by Daniel Enderton
708      - the monitor--MNC output needs work
709      - many attributes need to be added (most are currently blank)
710    o mnc-ify theaim_v23 package as requested by Daniel Enderton
711      - many attributes need to be added (most are currently blank)
712    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
713    o add Sadourny like discretization to the 4th.O vorticity advection scheme
714    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
715      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
716         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
717    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
718     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
719    
720    checkpoint57i_post
721    o Diagnostics package was changed: diagnostic allocation is now deactivated
722      by setting an empty file name in the namelist (used to be by setting 0 frequency)
723    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
724      add 1rst Order upwind vertical Shear.
725    o add a quick fix for A/B checkpointing in OFFLINE mode
726    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
727      end-run around the C/Fortran linking horror in eesup/src/timers.F
728    o added pkg/runclock: allows user to terminate run based on wall clock
729    o added non-hydrostatic scaling parameter: nh_am2
730    o pkg/my82: futile attempt to make results compiler-independent by adding
731      some "_d 0", etc. no effect.
732    o for mnc output, fill the 'T' coordinate var with myTime and create a
733      separate 'iter' variable for iteration count
734    o pkg/diagnostics:
735      add new capability: output of Global/Regional & per-level statistics ;
736      tested against monitor output (including land & thSIce) on various exp.
737    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
738    
739    checkpoint57h_done
740      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
741      data.diagnostics, data.gchem, data.ptracers) is done.
742    
743    o pkg/diagnostics: prepare for Global/Regional statistics.
744      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
745    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
746      and rename it: DIFFERENT_MULTIPLE
747    
748    checkpoint57h_post
749    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
750    o pkg/diagnostics: change output frequency, now in seconds (instead
751      of Nb of iterations). This requires to change data.diagnostics.
752    checkpoint57h_pre
753    
754    o in mnc, let the user create the output dir if both mnc_outdir_date
755      and mnc_outdir_num are false
756    o add fflags() to pkg/diagnostics which allows one to specify, on a
757      per-file basis, the file precision [default behavior is unchanged]
758    o added diagnostics to pkg/kpp, including computation of mixed layer
759      depth based on a temperature/density criterion
760    o updated verification/natl_box to test the new pkg/kpp diagnostics
761    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
762    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
763    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
764      not mnc -- this mistake was found by JMC and is now corrected
765    
766    checkpoint57g_post
767    o add Adams-Bashforth 3rd Order time stepping:
768      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
769      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
770    checkpoint57g_pre
771    
772    o make lambda[Theta,Salt]ClimRelax spatially varying
773      (default remains spatially uniform constant based on tau)
774    o added new control variables
775      * init. uVel, vVel, etanN
776      * lambda[Theta,Salt]ClimRelax
777    o separate masks used for ctrl_pack/unpack 'from write_grid' output
778      (suggested by G. Forget)
779    
780    checkpoint57f_post
781    o add parameter "baseTime" = model base time = time at iteration zero
782      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
783      account for baseTime shift
784    o move Coriolis arrays from PARAMS.h to GRID.h
785    checkpoint57f_pre
786    
787    o mnc-ifying the seaice package
788    o introduced an alternative length scale calculation for use in the limiting
789      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
790    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
791    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
792      as well as grad(vort3).  Made it compatible with both approximate form
793      for the cubed sphere and full form of these gradients.  Added flag
794      useFullLeith to select between approximate and full form.  
795    o add "d0" in getcon.F to reduce differences between compilers/platforms
796      update output.txt of exp. fizhi-gridalt-hs
797    o change port_rand funtion to allow to set the seed.
798    o fix obscure MNC bug involving conversion between reals and integers
799      - it caused no problems with certain (eg. gcc, ifc) compilers but the
800        new version is now more standards-compliant
801    o adjoint-related modifications
802      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
803      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
804      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
805    
806    checkpoint57e_post
807    o Adding eddy stress controls a la Ferreira et al.
808    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
809    
810    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
811      update output.txt of exp. fizhi-gridalt-hs
812    o add more "Z" dimensions and associated coordinate vars to MNC
813    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
814    o parameter calendarDumps: when set, approximate months (30-31 days) and years
815      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
816      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
817      months and years.  Requires pkg/cal.
818    o diagnostics: add pickup functionality
819      - off by default for backwards compatibility
820      - current version only uses MDSIO -- MNC will be added
821    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
822    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
823    
824    checkpoint57d_post
825    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
826    o modify verification/ideal_2D_oce so that it tests the creation of mnc
827      output from the diagnostics package
828    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
829    o make genmake2 more portable by using ".$FS" instead of ".f" for more
830      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
831    o add coordinate variables to the MNC output from the diagnostics package
832    o change MNC-flags default value: true when useMNC=TRUE
833    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
834      the ability (off by default) to read the grid information using MNC
835    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
836    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
837    o do snap-shot diagnostics at the middle of the time-interval (instead of
838      at the end).
839    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
840      new test for AIM with thSIce + slab-ocean
841    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
842    o move state variable diagnostics to the beginning of the time step ;
843      (note: still needs some work specially for snap-shot diagnostics)
844      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
845    
846    checkpoint57c_post
847    o Change testing option (-ieee) to get closer agreement between g77 & ifort
848    o generate new output.txt files on faulks with g77 & the new -ieee option
849    checkpoint57c_pre
850    
851    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
852      update output.txt of exp. global_ocean.90x40x15
853    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
854      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
855    o add saltFlux(+File) forcing capability with periodicExternalForcing
856    o allow to use pkg diagnostics for GM-Redi & ThSIce output
857    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
858    o improvements for the MNC output from DIAGNOSTICS:
859      - correct handling of the unlimitied dimension
860      - all dims now have associated coordinate variables
861      - variables located at U, V, and Corner ("Z") points are now written
862        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
863        *all* data points are output
864    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
865    o added pkg/seaice/seaice_monitor.F
866    o mdsio_readfield.F can now read files visible only to master MPI process.
867    o pkg/seaice: some test code for ice-modified ocean stress
868    o exf_getffields interpolation defaults to bilinear for all scalar forcing
869      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
870      spurious negative numbers for precipitation and humidity.  Will cause
871      some small numerical differences for integrations using pkg/exf/exf_interp.F.
872    o pkg/ctrl/
873      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
874        May be enabled via doPackDiag
875      *  introduce z-scaling of
876         + gradient (doZscalePack) and
877         + control (doZscaleUnpack)
878    o pkg/mdsio/
879      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
880      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
881    
882    checkpoint57b_post
883    o simplify options in diagnostics_fill arguments (remove weird combinations)
884    o fix MNC coordinate variables so that they now contain per-face index
885      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
886      general, EXCH2 grids are only aligned to a "local" coordinate system
887    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
888    o Implement instantaneous output within pkg diagnostics:
889      setting a negative frequency in data.diagnostics produces
890     "snap-shot" output (as opposed to time-average if freq > 0)
891    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
892      NOTE: change ptracer diagnostics name: use 2 characters to work with
893            more than 9 tracers. Add also diagnostics of advect & diffus flux.
894    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
895      becomes the coordinate variable for the 'T' dimension
896    o add CF-style coordinate variables to MNC
897      - just a first cut:  numbers are meaningless on the cubesphere and
898        missing along the T axis but otherwise it works!
899    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
900    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
901    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
902      this is based directly on what the model compute, so that the content of
903      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
904    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
905    o clean up build options files for SunOS, in particular
906      - remove -traditional from xmakedepend
907      - change -xarch=v9 to -xarch=native for f77
908      - restore use of make (not gmake)
909      - add CC=gcc if using g77
910    o changes per discussion of AM, JMC, & EH3 today:
911      - move redundant "grid" variables out of "state" -- in preparation of
912        creating proper CF-style coordinate variables and in recognition
913        that any/all grid variables can be easily copied (eg. w/NCO) from
914        the grid files into any of the other NetCDF files
915      - *always* output grid variables with MDSIO (this will eventually be
916        changed)
917      - output MNC grid file if useMNC is true
918    o every instance of _END_MASTER() has been found and replaced with
919      _END_MASTER( myThid ) in order to satisfy certain picky Sun
920      preprocessors
921    o re-arrange diagnostics pkg initialisation:
922     - allow each package to extend the available diagnostics list
923     - add some checking and fix small problems (multi-threaded, ...)
924     - new S/R diagnostics_fill (replace fill_diagnostics):
925       look through the short list of active diag. (instead of the long list)
926       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
927    
928    checkpoint57a_post
929    o this set of changes restores TAMC compatibility
930      tested for global_ocean.90x40x15 adjoint on trough
931      (what a pain)
932    
933    checkpoint57a_pre
934    o some modifs in tools/build_options for sunos
935    o call ctrl_pack for ctrl at end for optimcycle=0
936    
937    checkpoint57
938    o add horizontal bi-harmonic viscosity for vertical velocity
939      - new parameter viscA4W (defaults to viscA4)
940      - affects only non-hydrostatic code
941      - to be done: no-slip lateral boundary conditions
942    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
943    o implement Implicit Vertical advection for pTracers
944    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
945      (implemented also for implicit vertical diffusion & advection)
946    o OBCS: extend application of tracer open boundary conditions
947      to a strip beyond the boundary of width Olx/Oly
948    o add call monitor to TAF set of required calls (flow directives)
949      and include in natl_box_adjoint
950    o untangle a few ifdefs related to cost, ctrl, autodiff
951      untangel a few ALLOW_ECCO_OPTIMIZATION
952    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
953      (theta2, salt2 in ecco_cost_weights)
954    
955    checkpoint56c_post
956    o OBCS as control variables
957      - update ctrl_ad_diff.list, obcs_ad_diff.list
958      - remove balance of obcs controls from default
959      - fix index bug nobcs in ctrl_init
960      - fix dummy fields filen in ctrl_pack
961      - add dummy weights for obcs
962    o lsopt: comment out fort.94 output
963    o optim:
964      - remove unnecessary header files
965      - adjusted namelists
966      - add xerbla.F to Makefile
967    o exf:
968      - multiple modifications of exf_check_range
969      - unit change in exf_init_runoff from [m/year] to [m/s]
970    o mdsio:
971      - i/o-vector change debugLevel from debLevA to debLevB
972    
973    checkpoint56b_post
974    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
975      is called from DO_THE_MODEL_IO
976      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
977      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
978      - clean up PTRACERS_WRITE_TIMEAVE a little
979    o add another verification experiment that tests both the cfc-pkg and
980      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
981      reactive tendencies treated inline with regular timestepping
982    o testreport previously did a lousy job of comparing small numbers, so
983      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
984      implemented in the little c-progam tmp_cmpnum.c which is embedded in
985      testreport.
986    o ptracers_monitor: bug fix for MPI
987    
988    checkpoint56a_post
989    o GCHEM: finish reorganizating the package
990      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
991        (introduces another 3D-array for each passive tracer, but only if
992        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
993        gchemTendency is not needed because the timestep is done separately)
994      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
995      - GCHEM is now---more or less cleanly---separate from PTRACERS
996      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
997        so clear to me how that should be done in a general way.
998    o CFC: improve formatting of output in CFC_ATMOS
999    o PTRACERS:
1000      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1001        that ALL experiments with ptracers enable can be checked. This makes
1002        GCHEM_MONITOR obsolete.
1003      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1004        monitorFreq
1005      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1006    o add PTRACERS (PTR0[1-5]) to testreport output
1007    o exf_check_range:
1008      * default changed to .TRUE.
1009      * will check values for niter0 if debLevA, every timestep if debLevB
1010      * STOP in exf_check_range if 'out of range'
1011      * range chosen generous to allow for potential extema
1012      TBD: a version with stricter range
1013           permitted range would be runtime parameters
1014    o GMredi:
1015      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1016      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1017      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1018    o GCHEM:
1019      - move call to GCHEM_FORCING_SEP, so that it is now called before
1020        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1021      - introduced a useGCHEM runtime flag and applied it everywhere.
1022      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1023        this flag is now only visible within GCHEM-pkg routines.
1024      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1025        be replaced by a 3D array that is computed before thermodynamics; for
1026        this, the tracer ID iTracer had to be included into the parameter list
1027        of ptracers_forcing
1028      - set up forward_step to call gchem_forcing, that will replace
1029        gchem_forcing_int in ptracers_forcing
1030      - cleaning up
1031    o small cleaning of exch2: remove files that are also in eesupp/src
1032    
1033    checkpoint56
1034    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1035    o mnc: cleanup "full" files--fixes out-of-memory problem
1036    o ECCO-GODAE
1037      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1038      * fully merged and updated from SIO code
1039        windstress sign change affects
1040        - exf_inscal_[u/v]stress
1041        - sign of xx_tau[u/v] adjustments
1042        - signs in cost_scat
1043      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1044      * natl_box_adjoint updated and compressed
1045      * 2-level checkpoint switch added
1046        (tested in EXP. 1 of natl_box_adjoint)
1047      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1048    o SVD
1049      * first complete, non-hacked version for SVD calculations
1050      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1051        performed via direct access files admtlm_vector.it????
1052        (via ctrl_[un]pack)
1053      * optimcycle is used for ARPACK iteration counter
1054        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1055      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1056        and add linear transforms where necessary
1057      * controls are initial/final SST, SSS (can be extended; need to check
1058        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1059    o mdsio: filename info to both stderr, stdout
1060    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1061      from sign change
1062    
1063    checkpoint55j_post
1064    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1065      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1066    o add consistent build directories and .cvsignore files to verification
1067    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1068    o make all subroutines 30 or less characters in length for certain older
1069      compilers to work (a thorough search only turns up two routines in
1070      pkg/ptracers)
1071    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1072      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1073    
1074    checkpoint55i_post
1075    o change arrays for total vertical diffusivity (2.D if explicit,
1076      3.D if implicit) ; each ptracer uses its own background value.
1077    o added mnc/NetCDF output capability to ocn_compon_interf
1078      - added bits to verification/cpl_aim+ocn so that it can run on
1079        ITRDA and other clusters without the mpirun "-wd" option
1080    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1081      configuration
1082    o give MNC the ability to create additional files rather than
1083      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1084      - the default is just less than 2GB which is a practical limit
1085        on many systems
1086    o Compute the non-local term using either KPP vertical diffusivity (=default)
1087       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1088    
1089    checkpoint55h_post
1090    o add verification test "vermix"
1091    o remove all the *_ioinc flags and replace with the single global
1092      outputTypesInclusive flag
1093    o allow to set a vertical profile of vertical diffusivity for T & S
1094    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1095    o useMNC moved from data.mnc to data.pkg
1096    
1097    checkpoint55g_post
1098    o Renaming carbon AD experiments to comply with testreport conventions
1099    o Updating adjoint of Held-Suarez hs94.1x64x5
1100    o Fixing directives for non-ECCO forward_step, after ECCO directives
1101      have been fixed to avoid recomp. of do_oceanic_phys
1102      Works well for global_ocean.90x40x15,
1103      but recomp. issue remains for carbon
1104    o Updating adjoint output for natl_box_adjoint after
1105      pkg/ecco has been modified (see taga c55d_post)
1106    
1107    checkpoint55f_post
1108    o rename to timeave_init_fixed
1109    
1110    checkpoint55e_post
1111    o some delicate re-shuffle of store directives to avoid one
1112      extra call of do_oceanic_physics
1113      affects ecco_the_main_loop.F, do_oceanic_physics.F
1114      checkpoint_lev1_directives.h
1115    o NB: this may break global_ocean adjoint temporarily,
1116      but it is clear how to fix it. Will do later, need this now.
1117    
1118    checkpoint55d_post
1119    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1120    o ecco_cost_weights is modified to 1x1 runs
1121    o modifs to allow observations to be read in as
1122      single file or yearly files
1123    o enable to read exf forcing fields as either
1124      single file or yearly files (flag useExfYearlyFields)
1125    checkpoint55d_pre
1126    
1127    o switch between 2-level and 3-level checkpointing
1128    o add ability of MNC to write local and "partial" (eg. 2D slices where
1129      the full 3D field is never actually stored) arrays to NetCDF files
1130      with the correct (that is, the complete multi-dimensional) set of
1131      array indicies
1132      - used in mom_vecinv() to write the diagFreq output
1133      - tested (demonstrated) in verification/aim.5l_cs
1134    o further mnc-ification
1135      - add verification/lab_sea to the list with mnc setups
1136      - fix undefined mnc v-names in cd_code
1137      - add kpp to mnc output (both snapshot and timeave)
1138    o non-hydrostatic code
1139      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1140        in calc_gw.F
1141      - defaults to viscAh
1142      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1143        friction or Leith) in non-hydrostatic mode, as long as there is
1144        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1145    o pkg/cost
1146      extend simple cost functions to treat time mean quantities
1147      (T,U,V) via cost_accumulate_state from cost_tile
1148    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1149        be 2 times larger than the minimum size the advection scheme requires.
1150        now get a perfect conservation of salt in advect_cs test-exp (updated)
1151    o GGL90 (Gaspar's TKE mixed layer)
1152      - add horizontal diffusion of TKE, requires exchanges in
1153        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1154        default. In OPA there is no horizontal diffusion of TKE but the
1155        mixing coefficients are computed from a horizontal average of TKE of
1156        6 points or so. I think that diffusion has a little more physical
1157        justification.
1158      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1159        was in vain)
1160      - mask tke-variable in ggl90_init
1161    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1162    o fix biharmonic diffusion on CS-grid.
1163    o more obcs stuff
1164      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1165        for reading boundary values. This routine is called from
1166        obcs_prescribe_read
1167      - updated obcs_check
1168      - changed sponge layer relaxation parameter units for days to seconds
1169      - turned off sponge layer by default
1170      - changed argument list of OBCS_CALC to myTime+deltaTclock
1171      - fixed about 35 bugs in obcs_external_fields_load
1172    
1173    checkpoint55c_post
1174    o obcs stuff
1175      - new runtime flags useOBCSprescribe, useOBCSbalance
1176      - re-arranged obcs_calc
1177      - moved exf_getobcs to obcs_prescibe_read
1178        obcs_prescibe_read is called after ORLANSKI stuff
1179        and independent of it (executable can contain all).
1180      - updated obcs_check
1181      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1182        These may be necessary only if tangential velocities are
1183        prescribed at OB, not sure, needs testing.
1184    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1185      which simplifies the calls and passes the ifc check-bounds test
1186    
1187    checkpoint55b_post
1188    o add a 2D scalar, Z location, exchange_2 routine.
1189    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1190      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1191      affects advect_cs results (for the wrong reason): update output.txt
1192    o use a more standard discretization for biharmonic viscosity ;
1193     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1194      affects results of dome set-up: update output.txt
1195    o fix gad_advection.F (CubedSphere part), back to version 1.23
1196    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1197    
1198    checkpoint55a_post
1199    o merged code to
1200      * prescribe/read time-dependent open boundaries
1201        (works in conjunction with exf, cal)
1202      * sponge layer code for open boundaries
1203      * each boundary N/S/E/W now has its own CPP option
1204        (healthy for the adjoint)
1205    
1206    checkpoint55
1207    o up-to-date adjoint of previous breaks
1208      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1209      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1210      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1211      - carbon: * remove tr1-related adjoint verification
1212                * add ptracer as control variable
1213    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1214      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1215    
1216    checkpoint54f_post
1217    o in verification/carbin/ remove experiment related to
1218      ALLOW_PASSIVE_TRACER (array tr1 etc)
1219      code_ad/ input_ad/ results_ad
1220    
1221    o add two new packages
1222      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1223        + subject to optimization (memory)
1224      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1225        + subject to reordering (many GOTOs in the original code)
1226        + so far opps is called for every (i,j) point, and then operates in
1227          the vertical; one may want to reorder the scheme in order operate in
1228          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1229          fields)
1230    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1231      - all verification tests compile and run with linux_ia32_g77
1232      - defaults are compatible with current input files--nothing
1233        should change if you were not previously using MNC
1234      - MNC output has been added in numerous places (eg. timeave)
1235        but there are still a few writes not yet do-able with MNC
1236        (this is in progress)
1237      - flags now allow for either/or/both use of MDSIO and MNC and
1238        documentation will soon follow
1239      - numerous small formatting cleanups for ProTeX
1240    o add version info (via BUILD_INFO.h) to MNC and stdout
1241    
1242    checkpoint54e_post
1243    o add two new packages
1244      - pp81 (Packanowski and Philander, 1981), Richardson number and
1245        stratification dependent mixing
1246      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1247      - these scheme operate in a similar manner as KPP (without ghat, of
1248        course), however there is only one diffusivity that is used for both
1249        temperature and salinity (and passive tracers)ç
1250    o add offline package
1251    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1252      provided by Stephanie Dutkiewicz
1253    o genmake2: add ability to search for C compilers and cleanup test output
1254      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1255    
1256    checkpoint54d_post
1257    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1258    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1259      leading to additional shift by 5 days each year of integration
1260       (i.e. leading to considerable offset over the years)
1261    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1262    o start with no AB and no initial filtering (staggerTimeStep):
1263      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1264    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1265      (external loading & cpl import/export stay in forward_step.F)
1266    o update coupling interface to work with new staggerTimeStep
1267    o change MDSIO ptracers_pickup.
1268    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1269    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1270    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1271    
1272    checkpoint54c_post
1273    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1274      this affects (truncation error) output.txt of test-exp:
1275       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1276    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1277    o change Qnet to always be the net heat flux, (+upward).
1278      affects (truncation error) output of natl_box exp.: updated
1279    o define the max number of passive tracers in PTRACERS_SIZE.h
1280    o start to test mnc routinely in exp0
1281    o add sea-ice loading (sIceLoad) as a new forcing field.
1282    
1283    checkpoint54b_post
1284    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1285       impressive on Altix and Opteron systems)
1286    o diagnostics can now write NetCDF files through the mnc package
1287    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1288    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1289    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1290      affects (truncation error) output of lab_sea & natl_box exp.: updated
1291    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1292    
1293    checkpoint54a_post
1294    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1295    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1296    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1297    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1298      + internal_wave (shift in writing cg2d_ini_res)
1299    checkpoint54a_pre
1300    
1301    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1302      - modified verification/lab_sea and natl_box_adjoint accordingly
1303    
1304    checkpoint54
1305    checkpoint53g_post
1306    o prepare splitting of thermodynamics: store convect.counter in common block
1307    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1308      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1309    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1310    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1311    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1312    o restore adjointability
1313    
1314    checkpoint53f_post
1315    o modifications that affect AIM experiment results (update output.txt):
1316      - no advection of S at top interface Nr (pkg/generic_advdiff)
1317      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1318    o AIM pkg:
1319      - include stability function into surf.Flux derivative relative to Tsurf
1320      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1321    
1322    checkpoint53e_post
1323    o merged cylindrical coord configuration
1324    o added rotating_tank experiment
1325    checkpoint53e_pre
1326    
1327    checkpoint53d_post
1328    o faulks upgraded: re-generate output.txt that have changed:
1329       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1330    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1331    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1332    o added Sadourny discretization of Coriolis
1333      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1334      - re-enabled use of omega3 (useAbsVorticity)
1335    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1336      vector-invariant equations
1337      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1338    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1339      hopefully without new bugs
1340      - still to do: biharmonic friction for non-hydrostatic w
1341    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1342    o regenerated output for global_ocean_ebm (using -ieee)
1343    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1344      of mom_common/
1345      - simple re-arrangement of instructions within computing loop
1346    checkpoint53d_pre
1347    
1348    checkpoint53c_post
1349    o new version of coupler for AIM+thSIce and Ocean models
1350     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1351     - land: change Evaporation of snow
1352     - aim with thSIce: fix bug in snow-precip.
1353    o changes to calc_gw.F
1354     - bug fix for w^2 term near the bottom boundary
1355     - (hopefully) improve the lateral slip boundary condtions for use with
1356        partial/looped cells
1357      - because the bug fix changes two verification experiments anyway (exp5
1358        and plume on slope), change the lateral boundary condition from half slip
1359        to the value of no_slip_sides
1360    o ebm package wasnt quite up to the parallel task. Fixed that.
1361    o Adjoint of EBM package + verification
1362      * TLM OK
1363      * ADM not sufficient accuracy yet (needs further testing)
1364    
1365    checkpoint53b_post
1366    o Commiting new energy balance model to repository
1367      * package is pkg/ebm
1368      * verif. is verification/global_ocean_ebm
1369      * references are in ebm_driver.F
1370    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1371    C        Global thermohaline circulation. Part I:
1372    C        Sensitivity to atmospheric moisture transport.
1373    C        J. Climate 12(1), 71-82
1374    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1375    C        Global thermohaline circulation. Part II:
1376    C        Sensitivity with interactive transport.
1377    C        J. Climate 12(1), 83-91
1378    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1379    C        Destabilization of the thermohaline circulation
1380    C        by atmospheric eddy transports.
1381    C        J. Climate 7(12), 1870-1882
1382    o Will need long integration testing.
1383    checkpoint53b_pre
1384    
1385    o created pkg/mom_common in preparation for variable viscosity code
1386    o renamed and split ini_mnc_io
1387    o pkg/land: only liquid water can diffuse or run-off
1388    o AIM using land: soil wetness availability account for snow
1389    o added printMapIncludesZeros to EEPARMS namelist
1390    
1391    checkpoint53a_post
1392    o restore TAMC compatiility for exf_constants.h
1393      (no usage of _d in .h)
1394    o Additional storing in KPP in an attempt to fix
1395      TAMC problem with adjoint of KPP code.
1396      (no success...)
1397      Identical code works fine with TAF.
1398    o Fixed verification/natl_box_adjoint experiments.
1399      Initial conditions for Experiments 4 and 5 are now
1400      set to "SEAICE_initialHEFF=0", which is more reasonable,
1401      and hence gives results closer to that of Experiment 2.
1402      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1403    
1404    checkpoint53
1405    o stable checkpoint with up to date adjoint
1406      TLM tests only run for 1st grdchk at the moment. Its unclear if
1407      this is a code problem or a problem with resetting code for g_
1408      variables that is being autogenerated wrong.
1409      Otherwise:
1410       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1411       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1412         are both still in chaos following their security messes.
1413    
1414    checkpoint52n_post
1415    o various build (mostly genmake2) changes including:
1416      - ability to build/run more easily within Cygwin and MacOS X
1417      - more complicated Makefiles with a stronger dependence on Gnu Make
1418    o pkg/seaice modifications
1419      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1420        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1421        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1422      - changed proxy for geostrophic velocity and updated
1423        verification/lab_sea/results/* accordingly
1424      - removed ADI dynamic solver from pkg/seaice
1425      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1426        they caused a segmentation fault under certain circumstances
1427      - removed unused field WATR
1428    o bug fix in exf-package:
1429      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1430         now reflect that.
1431    o small fixes in the cal-package:
1432      - set reference date to first of January for the 'model'-calendar
1433      - failing of cal_CheckDate in cal_FullDate now actually results in a
1434        warning
1435    o small modifications in exf-package to increase flexibility:
1436      - change climtempfreeze from a constant to a runtime parameter that
1437        is specified in data.exf_clim (default = -1.9)
1438      - introduce runtime parameter windstressmax (default = 2.0) that is
1439        specified in data.exf
1440    o fix in pkg/thsice:
1441      - update Evap (Tsf changes) to be consistent with Latent heat flux
1442      - maintain snow precipitation unchanged (even if Tsf >=0).
1443     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1444    
1445    checkpoint52m_post
1446    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1447      this does not change any of the results, because myIter=0 in swfrac always
1448      lead to jwtype=2 (the default anyway), but the call makes little sense
1449      as a default
1450    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1451    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1452      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1453    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1454    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1455    o extending useSingleCpuIO option to work with new exch2 I/O format
1456      - old-style, missing-tile I/O is still accessible by defining CPP
1457        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1458    o monitor package can write to NetCDF files and/or STDOUT
1459    o fix re-definition bug in MNC_GRID_INIT_ALL()
1460    o doc/api_reference added
1461      - a framework for building an API Reference Manual using all
1462        the "protex" comments embedded in the code
1463      - see pkg/generic_advdiff, pkg/mnc for examples
1464    o MNC:
1465      - make myThid the last argument for all subroutines
1466      - new default for the grid files: NO halos
1467      - add useMNC and other run-time flags
1468      - separate per-file-group handling of the unlimited dimension
1469      - early initialization of MNC w/ flags read at the eeboot stage
1470        and lookup tables set in initialize_fixed
1471      - write all MNC output to a freshly-created directory
1472    o thermodynamics sea-ice (thsice) is now tested with testreport.
1473    o test exp. advect_cs: use the standard cs32 grid ; update output.
1474    o Added functionality to grdchk:
1475      pick global i,j,k position (or nearest wet) where to perform check.
1476    
1477    checkpoint52l_post
1478    o new land formulation:
1479      a) use ground enthalpy as prognostic variable to ensure exact
1480         energy conservation.
1481      b) account for water temperature and for latent heat of freezing
1482         in all processes (rain, run-off, ground storage)
1483      c) compute surface and ground temperature implicitly.
1484    o aim_v23 modification for new land model:
1485      a) Treat separately land / ocean / sea-ice surface fluxes
1486         to allow implicit computation of land & sea-ice surface temp.
1487      b) add snow precipitation.
1488    checkpoint52l_pre
1489    
1490    o fix problem (when 1 tile is empty) in min/max monitor.
1491    o fix bug in timeAve (u,vZetatave in common block)
1492    o no restoring terms under ice for pkg/seaice
1493    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1494    o bug fix for pkg/seaice pickups
1495    o change MNC call locations and add coordinate attributes
1496    o mask vorticity at the corner ; affects global_ocean.cs output
1497    o fix ini_curvilinear_grid ; test CS experiments with mpi
1498    o aim.5l_cs: modify sea-ice fraction input file ; update output
1499    o exf: Adding simple range check routine for exf fields after read
1500    
1501    checkpoint52k_post
1502    o removed top-level directory "diags"
1503      - we migrated these functions to pkg/timeave a long time ago
1504    o fixed bug introduced in pkg/monitor
1505    o accuracy ctrlprec = 32 insuffient for gradient checks using
1506      averaged fields (I/O via cost_averages)
1507      -> use ctrl.h in active_file*.F to control I/O precision.
1508    o paramter list of CALL ADTHE_MAIN_LOOP
1509    o added initial do_the_model_io to ecco
1510    o set all ...Freq to zero after cost_final
1511      taveFreq, dumpFreq, pChkptFreq
1512    o MAIN and ECCO differentiability restored
1513    
1514    checkpoint52j_post
1515    o fix nchklev in tamc.h for global_ocean...
1516    o Bringing flow and store directives up-to-date
1517    o Really weird thing!
1518      call do_the_model_io from the_main_loop with parameters
1519      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1520      TAF places a faulty re-call of initialise_varia
1521      after cost_final call which should not be there!
1522    checkpoint52j_pre
1523    
1524    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1525      error messages
1526    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1527    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1528      debug output
1529    o modfied mdsio_writefield.F to handle non-global files under exch2
1530    o update AIM Cubed-Sphere exp (aim.5l_cs):
1531      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1532    o update AIM Equatorial Channel exp:
1533      use standard aim_v23 pkg and change the SST fields to be more realistic.
1534    o globalFile now works with exch2
1535    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1536      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1537    o limit timeave output for hi-res integrations
1538    
1539    checkpoint52i_post
1540    o removed CPP_EEOPTIONS.h from verification/*/code
1541    o updated the tiling for global_ocean_pressure
1542    checkpoint52i_pre
1543    
1544    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1545      the old pkg/aim).
1546    
1547    checkpoint52h_pre
1548    o shortened offending lines in exch2_send_rx?.template
1549    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1550    o genmake2: add build & execute test for NetCDF code
1551    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1552      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1553    o added useSingleCPUIO flag to monitor.F and mon_out.F
1554    o added temporary hack for sea-ice dynamics on the cube:
1555      metric terms are ignored and it is assumed that
1556      there is no sea-ice on cube faces 1, 2, 4, and 5.
1557    
1558    checkpoint52f_post
1559    o added exch2 cube routines to pkg/exch2
1560    o modified hs94.cs-32x32x5 to use it
1561    o added new grid files to hs94.cs-32x32x5
1562    checkpoint52f_pre
1563    
1564    checkpoint52e_post
1565    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1566      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1567    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1568      to work with implicit vertical advection and AB ;
1569    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1570    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1571     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1572    checkpoint52e_pre
1573    
1574    o fix bug in impldiff when Nr=1 or Nr=2.
1575    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1576    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1577    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1578      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1579    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1580    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1581    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1582    
1583    checkpoint52d_post
1584    o re-tiled many expts to allow comparison in multi-processor mode
1585      - updated output accordingly
1586      - changed hs94.128x64x5 to use intial T from file rather than use the
1587        random number generator
1588    o add infrastructure in model routines for fizhi and gridalt packages
1589    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1590    o changes to permit hi-res, cubed-sphere, configuration
1591      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1592      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1593      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1594        of surface winds for the cube
1595      (A verification experiment, based on global_ocean.cs32x15, but with
1596       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1597       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1598       complete with example surface forcing files and matlab scripts to look
1599       at the output and compare it with that of global_ocean.cs32x15.)
1600    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1601       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1602       to conform to the common rule.
1603    o check-in the first version of the coupler + interfaces for multi-components
1604       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1605       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1606       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1607       - ocean and atmos. share the same horizontal grid (no interpolation).
1608       - exchanges between component and coupler is done in forward_step
1609    o new verification experiment, cpl_aim+ocn:
1610       coupled ocean - AIM atmosphere on cs32 grid.
1611    
1612    checkpoint52d_pre
1613    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1614    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1615    
1616    checkpoint52c_post
1617    o Fixing OPTIONS files for use of exf:
1618      - ALLOW_ECCO not needed
1619      - ECCO_CPPOPTIONS.h should not be included from
1620        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1621        as has been the case in the past
1622      - All cal/exf related options are currently set in
1623        single header file. Should remain so until we
1624        agree on a consistent new policy.
1625    o Removed all CPP options for cal package.
1626      cal has no more CPP options.
1627    o modified STOREs in GAD_ADVECTION
1628    o corrected key comp. for passkey
1629    
1630    checkpoint52b_post
1631    o new version: "thsice" of thermodynamic sea-ice pkg:
1632     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1633     - modify fluxes but do not change theta directly;
1634     - light cleaning of bulk_force pkg (still needed with thsice).
1635     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1636       + output_thsice.txt to test thsice & bulk_force pkgs.
1637    o put back grid & coriolis monitor output.
1638    checkpoint52b_pre
1639    
1640    o call "do_the_model_io" at the beginning (=> dump initial state)
1641    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1642    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1643      (need info on NUMBER_OF_PTRACERS)
1644    o missing PTRACERS headers in some routines
1645    o default tamc.h in pkg/autodiff supposed to crash
1646      to ensure proper customization
1647    
1648    checkpoint52a_post
1649    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1650      - moved surfaceTendencyTice from pkg/seaice to main code
1651      - subroutine FREEZE_SURFACE now limits only surface temperature
1652        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1653        => new output.txt for global_ocean.cs32x15 & global_with_exf
1654      - keep the old version of FREEZE for backward compatibility;
1655        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1656      - corresponding modifs for TAF directives
1657    o added surface flux output variables to TIMEAVE_STATVARS
1658    o time-averaged output for pkg/ptracers
1659    o fix problem with ECCO-related divided adjoint
1660      snapshot file was missing some ad-variables,
1661      but no warning issued by TAF
1662    
1663    checkpoint52a_pre
1664    o some bug fixes for #undef REAL4_IS_SLOW
1665    
1666    checkpoint52 = ecco_c52_e35
1667    o after testing adjoints of checkpoint51u_post
1668    
1669    checkpoint51u_post
1670    o this is the post-merge tag of the ecco-branch
1671      (needs another clean checkout and re-testing)
1672    o various natl_box_adjoint configs and results
1673      but no input fields
1674    o obcs adjoint not yet merged!
1675    o adding ECCO global 1x1 and 2x2 degree configs
1676    o updated/extended some store directives for seaice
1677    o pkg/ecco now containes ecco-specific part of cost function
1678    o top level routines the_main_loop, forward_step
1679      supersede those in model/src/
1680      previous input data.cost now in data.ecco
1681      (new namelist ecco_cost_nml)
1682    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1683    
1684    checkpoint51t_post
1685    o this is the pre-merge tag of the ecco-branch
1686    
1687    checkpoint51s_post
1688    o cleanup: removed various obsolete #define-s
1689    o pkg/grdchk
1690      - renamed 'ph-grd 3' to 'grad-res'
1691      - merged from ecco-branch
1692        (remaining bug fixes for obcs gradient checks)
1693      - additional high-precision output for testreport
1694        (grep for 'precision_grdchk_result')
1695    
1696    checkpoint51r_post
1697    o cleaned up or removed CPP_OPTIONS.h files
1698    o updated results for some of the tests to reflect the new
1699      optfiles (-ieee: -O0 instead of -O3)
1700    
1701    checkpoint51q_post
1702    o cd_code:
1703      - moved cd_scheme.F -> cd_code_scheme.F
1704      - separate read_checkpoint from cd_code_ini_vars.F
1705      - separated cd_code part from write_checkpoint
1706      - updated AD_SOURCE, generated .flow
1707      - added CD_CODE_VARS.h to the_main_loop
1708      - Moving cd_code specific store dir.s to pkg/cd_code
1709    o ctrl package totally restructured
1710      - pack/unpack now optional and decoupled from
1711        xx_/adxx_ I/O
1712      - ctrl_pack/unpack cleaned
1713        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1714      - confined inclusion of AD_CONFIG.h to where necessary.
1715    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1716    
1717    checkpoint51p_post
1718    o create initial cd_code package
1719      - WARNING: the initialization of fields within packages
1720        is broken because INI_FIELDS (where READ_CHECKPOINT is
1721        called) is called *before* PACKAGES_INIT_VARIABLES.
1722        This seems to be backwards since
1723        1) its important to initially zero the entire field including
1724           the "halo" region
1725        2) zeroing needs to be done *before* reading pickup info
1726           and the pickup call might or might not happen in any
1727           particular run
1728      - this needs an overhaul for R2
1729    o cleanup verification/*/code/GMREDI_OPTIONS.h
1730    o cleanup testreport
1731    
1732    checkpoint51o_post
1733    o bringing AD-related verif's up to date with genmake2
1734      - carbon/
1735      - global_ocean.90x40x15/
1736      - hs.94.1x64x5/
1737      - (front_relax/ )
1738    o (more) consistent directory structure for AD-related verif.'s
1739    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1740    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1741    o bug fix in find_alpha.F for MDJWF:
1742      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1743        change rho -> rho-rhoConst
1744      - replace call find_rho to find_rhonum
1745    o initialisation of rFlx extended to full array (required by TAF)
1746      and shifted to thermodynamics
1747    o removed PTRACERS.h in ptracers routine
1748    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1749    o Correcting initialisations for fVerU, fVerV.
1750    o helping TAF to recognize dependency on kUp for
1751      fVerU, fVerV
1752    o Replacing delZ by delR in pkg/ctrl/
1753    checkpoint51o_pre
1754    
1755    o undid all of cp51 pending some cleanups and discussion
1756    o added the [#include "AD_CONFIG.h"] statement to all files that need
1757       it for adjoint/tl #defines
1758     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1759     o removed tools/genmake since it no longer works
1760    
1761    checkpoint51n_post
1762    o modifications to make FREEZE flux visible to pkg/kpp
1763      - moved surfaceTendencyTice from pkg/seaice to main code
1764      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1765      - subroutine FREEZE now limits only surface temperature
1766        (this means new output.txt for global_ocean.90x40x15,
1767         global_ocean.cs32x15, and global_with_exf)
1768    o added surface flux output variables to TIMEAVE_STATVARS
1769    
1770    checkpoint51n_pre
1771    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1772    o added [#include "AD_CONFIG.h"] to all files that use the following
1773      defines:
1774      - ALLOW_ADJOINT_RUN
1775      - ALLOW_TANGENTLINEAR_RUN
1776      - ALLOW_ECCO_OPTIMIZATION
1777    
1778    checkpoint51m_post
1779    o incorporating changes to get TAMC/TAF working in genmake2
1780      - added new TAMC/TAF targets to the Makefile
1781      - various cleanups related to package handling
1782      - these changes should have no impact on the forward model
1783    
1784    checkpoint51l_post
1785    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1786     - faster algorithm for cal_addtime.F
1787     - higher precision arithmetic, where needed
1788     - pkg/exf *startdate variables changed from calendar date to
1789       model integration time
1790    
1791    checkpoint51l_pre
1792    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1793    o enable to apply restoring on S & T only in a latitude band.
1794    o update output (external_forcing_surf modif. change truncation errors)
1795       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1796    
1797    checkpoint51k_post
1798    o change default to: useNHMTerms=.FALSE.
1799     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1800       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1801     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1802        exp1, ideal_2D_oce
1803     - change data file of oceanic exp (leave the results unchanged for now)
1804       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1805    o set gravitySign automatically according to the vertical coordinate used
1806      (and change sign: back to "logical" value: +1 when R increases downward)
1807    o added an include barrier to the default CPP_OPTIONS.h and
1808      removed the #include "PACKAGES_CONFIG.h" from it
1809    o fix a bug in mom_fluxform (from chk51j_post)
1810    
1811    checkpoint51j_post
1812    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1813    o adjusted some flow directives (dynamics, thermodynamics)
1814    o added cubed-sphere case to test cost function
1815    o heckpoint_lev?_directives.h now include
1816      pkg-specific directives, whenever those are enabled.
1817    o Moving pkg-specific flow directives to corresponding pkg
1818      Moving pkg-specific differentiation list to corresponding pkg
1819      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1820      ---> conventions are
1821           - pkg_ad.flow
1822           - pkg_ad_diff.list
1823           - pkg_ad_check_lev?_dir.h
1824    
1825    checkpoint51i_post
1826    o merge of the branch-genmake2
1827      - knowingly breaks the older genmake
1828      - automatic generation of all ALLOW_${PKG_NAME} defines
1829      - new testreport supersedes older testscript
1830    o large number of package inclusion and header cleanups
1831    checkpoint51i_pre
1832    
1833    o new output for adjoin of global ocean vector invariant
1834    o fix for checkpoint of thermodynamic seaice and bulk_force
1835    o Steph gchem various cleanups
1836    
1837    checkpoint 51h_pre
1838    o fixed some single quotes
1839    o modify gchem pkg to be more versatile
1840    o modifications to clean up dic pkg
1841    o add pkg/cfc
1842    
1843    checkpoint51g_post
1844    o provide links for ARPACK and ADM*TLM
1845    o start removing verification/vero/
1846    o update AD-related stuff
1847      (in particular some IF-statements in model/src/ routines)
1848    o adding to verification/global_ocean.90x40x15/ adjoint of
1849      vector invariant setup
1850    
1851    checkpoint51f_post
1852    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1853    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1854      of tracer Green's fucntions for ocean inversion project.
1855    
1856    checkpoint51f_pre
1857    o Added on-the-fly spatial interpolation capability
1858        "USE_EXF_INTERPOLATION" to pkg/exf.
1859      - This is a temporary Cartesian-grid hack until
1860        the super-duper ESMF coupler becomes available.
1861      - See verification/global_with_exf/README for usage example.
1862      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1863        flags and modified pkg/seaice accordingly.
1864    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1865        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1866        non-local transport term.
1867    
1868    checkpoint51e_post
1869    o pkg/mom_vecinv:
1870      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1871      - add time-ave diagnostic of vorticity advection.
1872    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1873    o atmospheric geopotential: - include water vapor effect;
1874                                - use p^kappa in p* scaling.
1875    o land pkg: read initial state from files.
1876    o AIM : add stratospheric drag in the upper level
1877    
1878    checkpoint51d_post
1879    o change function ILNBLNK (=> last non-blank char.) to return zero
1880      (instead of the string length) when the string. char is empty
1881    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1882    o modif's to restore TAMC compatibility
1883      - avoid "_d" constructs in PARAMETER declarations
1884      - avoid interrupting lines by comment lines
1885    o Use cluster local disks for purely local I/O
1886      vs. globally visible disks needed for ctrl stuff
1887      (merged from ecco-branch)
1888      - new active_file_loc... and mdsio_..._loc routines
1889      - affected packages: autodiff, ctrl, grdchk, mdsio
1890    
1891    checkpoint51c_post
1892    o introducing integer flag debugLevel
1893      - debLevZero: suppress all output
1894      - debLevA: standard
1895      - debLevB: equivalent to current debugMode=.TRUE.
1896    o introducing pathname variable mdsioLocalDir for mdsio
1897      that can be specified at runtime
1898      (relevant for cluster I/O to local disk)
1899    `
1900    >>>checkpoint51b_post
1901    adjoint of ptracers
1902    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1903    o extended state in checkpoint_lev?, etc.
1904    o alternative ctrl/cost with tr1 or ptracer
1905    o new comlev1_bibj_ptracers
1906    o new ptracers.flow
1907    o made ptracers_forcing same as external_forcing_s
1908    o added verification for adjoint with ptracers
1909      - adm. grdchk fail so far
1910      - tlm. grdchk OK
1911      - checked tapelev/comlev recomputations: OK
1912    <<<checkpoint51b_pre
1913    
1914    checkpoint51a_post
1915    o added code for biogeochemistry package
1916      - new pkgs: dic, gchem
1917      - new subroutine in ptracers
1918    o modify code for biogeo packages
1919      - in model/src and pkg/ptracers
1920    
1921    checkpoint51
1922    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1923      - autodiff, ctrl, exf, grdchk, seaice
1924      kept separate packages
1925      - cost, ecco, obcs
1926    o updating verification/internal_wave, verification/lab_sea
1927      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1928    
1929    checkpoint50i_post
1930    o Preparing next differentiable checkpoint and sync
1931      of MAIN vs. ecco-branch
1932      - 1st step: this one is differentiable
1933      - 2nd step: next(! not this) checkpoint will have updated packages
1934                  from ecco-branch)
1935    
1936    checkpoint50h_post
1937    o new package "land": provide surface BC for AIM.
1938    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1939    o AIM: use true log-P extrapolation for near surface temp (= as in
1940        F.Molteni paper) ; update aim.5l_cs output.
1941    o New variable in PARM03 for more flexible pickups
1942    o somewhat cleaned package initialisation sequence for
1943      ctrl/ cost/ ecco/ in packages_... routines
1944    
1945    checkpoint50g_post
1946    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1947      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1948      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1949        made the default because of faster convergence than ADI
1950    
1951    checkpoint50f_post
1952    o exf totally restructured
1953      - replaced all exf_set_ routines by one generic exf_set_gen.F
1954        and made sure it's still differentiable
1955      - split exf_getffields.F into new exf_bulkformulae.F
1956      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1957      - updated adjoint/makefile and relevant verif. accordingly
1958    
1959    checkpoint50f_pre
1960     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1961          + change Evap over land. (update aim.5l_cs output)
1962     o added missing .cvsignores and made uniform across expts
1963     o changed configuration of tidal_basin_2d expt
1964     o added pkg/debug functions for tracing code in fatal crashes
1965     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1966     o new fn in pkg/monitor to stop model if solution grows too big
1967     o removed lots of single quotes from comments
1968    
1969    checkpoint50e_post
1970    o make KPP work with PTRACERS
1971     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1972       nearly a copy of kpp_transport_s
1973     - there is no analogue to SurfaceTendencyS, so I have to use
1974       gPtr(of the surface layer) instead
1975    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1976    checkpoint50e_pre
1977    
1978    checkpoint50d_post
1979    o change kpp output from multiple-record state files to single-record state
1980      files analogous to write_state.F
1981    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1982      analogous to the cg2d-related output.
1983    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1984      so that writing to internal file fn (with length 512) fails.
1985    checkpoint50d_pre
1986    
1987    checkpoint50c_post
1988    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1989    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1990    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1991    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1992    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1993    
1994    checkpoint50c_pre
1995    Merging from release1_p13:
1996    o bug fix for pkg/seaice dynamic solver
1997    o Added SEAICE_initialHEFF to pkg/seaice
1998    
1999    checkpoint50b_post
2000    o store u*,v* in gU,V instead of in guNm1,gvNm1
2001    o in order to put the momForcing out of the Adams-Bashforth:
2002      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2003      to timestep.F
2004    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2005    o re-generate output for highly sensitive test-exp:
2006       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2007    
2008    checkpoint50b_pre
2009    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2010    o corrected CPP option mismatch in exf_Bulk... functions for case
2011      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2012    
2013    checkpoint50a_post
2014    o Bug fix for merging between c50 and KPP.
2015      ikey was passed from thermodynamics to kpp_calc via
2016      common block rather than being recomputed in kpp_calc,
2017      in contradiction with new key itdkey.
2018      New key ikppkey created, and tamc.h headers updated.
2019    
2020    checkpoint50
2021    - 2nd step of merge with ecco-branch:
2022      merge changes in ecco-branch back into main trunk
2023    - bug fix in find_alpha
2024    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2025    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2026    - merged some sliced AD support routines
2027    
2028    checkpoint49
2029    merged from ecco-branch:
2030    o exf:
2031      - Enable initialisation of forcing fields to constant
2032        (runtime) values.
2033      - in exf_getffields.F
2034        Reduce i-/j-loop to interior domain, discarding overlaps.
2035        That also fixes wrong TAF-key computations for key_1, key_2
2036        with bulf formulae.
2037      - exf_init.F modify #ifdef for exf_init_evap
2038      - exf_getffieldrec.F, ctrl_getrec.F
2039        The following INT-usages are not safe:
2040          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2041          fldcount = int(fldsecs/fldperiod) + 1
2042        and were modified.
2043    o autodiff: checkpoint_lev...
2044      - updated storing for bulk formulae (some arrays were missing)
2045      - added state for seaice package
2046      - synchronized with main branch
2047    o DIVA:
2048      Modif.s in
2049      - the_main_loop.F
2050      - the_model_main.F
2051      and added cost_final_restore.F cost_final_store.F
2052      o With these changes, it is possible to fully separate
2053        the first forward run to compute the cost function (mdthe_main_loop)
2054        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2055        into separate model executions.
2056        This enables better tuning of DIVA to given queue sizes.
2057      o Loss of cost function value in consecutive DIVA runs is
2058        fixed by storing to 'costfinal' file.
2059      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2060        beginning/end of adjoint integration is accounted for.
2061      The current changes apply to TAF-1.4.26.
2062      TAF has one remaining bug, requiring one manual change
2063      (see MITgcm manual).
2064    o cal: synchronized between MAIN and ecco-branch
2065    
2066    checkpoint48i_post
2067    o Changes to restore differentiability of code w.r.t. previous tag
2068      (mostly adding new routines to make list and replacing
2069      pressure by totPhiHyd).
2070    o Updated and merged grdchk package
2071      - has both ADM and TLM checks
2072      - works for single- and multi-proc.
2073      - output cleaned
2074      - worked successfully for parallel DIVA
2075    o genmake:
2076      - Adding -platform=SP4
2077      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2078    o Modif. for DIVA:
2079      ctrl_unpack should not be called in intermediate DIVA interval.
2080      (similar thing would apply for active files such as
2081      tbar, sbar, psbar, which should not be reinitialised;
2082      only relevant for ecco-branch)
2083    
2084    checkpoint48h_post
2085    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2086    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2087    o Added SEAICE_initialHEFF to pkg/seaice
2088    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2089    
2090    checkpoint48g_post
2091    --- EOS:
2092    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2093      store total Potential in totPhyHyd for diagnostics & EOS.
2094    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2095    --- Pressure/geopotential gradient:
2096    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2097    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2098      ( changes results of global_ocean_pressure )
2099    o NLFS + z-coord.: add eta*Rho' contribution.
2100    o accurate phiHyd when using interface-W at the middle between 2 centers
2101     ( changes results of ideal_2D_oce )
2102    o includes r* 2nd term in potential gradient.
2103    
2104    checkpoint48f_post
2105    Merging from release1_p12:
2106    o Modifications for using pkg/exf with pkg/seaice
2107      - improved description of the various forcing configurations
2108      - added basic radiation bulk formulae to pkg/exf
2109      - units/sign fix for evap computation in exf_getffields.F
2110      - updated verification/global_with_exf/results/output.txt
2111    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2112      (SBO) core products, including oceanic mass, center-of-mass,
2113      angular, and bottom pressure (see pkg/sbo/README.sbo).
2114    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2115      to avoid negative values in shallow regions.
2116      - updated verification/natl_box/results/output.txt
2117      - updated verification/lab_sea/results/output.txt
2118    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2119    o Added useSingleCpuIO option (see PARAMS.h).
2120    o Updated useSingleCpuIO option in mdsio_writefield.F to
2121      work with multi-field files, e.g., for single-file pickup.
2122    o pkg/seaice:
2123      - bug fix in growth.F: QNET for no shortwave case
2124      - added HeffFile for specifying initial sea-ice thickness
2125      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2126    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2127      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2128    o pkg/seaice:
2129      - adjoint-friendly modifications
2130      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2131    
2132    checkpoint48e_post
2133    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2134    o dynamics: change definition of computational domain & adapt mom_fluxform
2135      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2136    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2137        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2138        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2139        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2140        inverted_barometer solid-body.cs-32x32x1
2141      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2142    
2143    checkpoint48d_post
2144    o in preparation for r*:
2145     a) use pre-computed gradient of hydrostatic potential:
2146        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2147     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2148        => affects results of glob_oce_pressure (different truncation error)  
2149      update output.txt of ideal_2D_oce & global_ocean_pressure
2150    
2151    checkpoint48d_pre
2152    o in preparation for r*:
2153      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2154      pass the 2 comp. of the grad. as arguments to momentum S/R.
2155      but for the moment, only used if it does not change the results.
2156    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2157    
2158    checkpoint48c_post
2159    Modifications in treatment of initial flux forcing controls
2160    to avoid extra storing of flux fields.
2161    
2162    checkpoint48c_pre
2163    o Added tidal_basin_2d experiment (currently 1D!)
2164    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2165    
2166    checkpoint48b_post
2167    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2168     (modification to pressure gradient not yet implemented)
2169    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2170      (for U & V) that are used for vertical advection of momentum.
2171    
2172    checkpoint48a_post
2173    o In preparation for r*, use temp. array to compute vertical transport
2174       in flux-form momentum pkg. => change results of few test-exp.
2175      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2176                        lab_sea, natl_box & plume_on_slope
2177    
2178    checkpoint48
2179    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2180    
2181    checkpoint47j_post
2182    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2183    o moved adexch from forward_step to addummy_in_stepping
2184    o added exch in ctrl_map_...
2185    o aveFreq.=0. at end of cost_final to avoid overwrite in
2186      reverse checkpointing loop
2187    o Yet more changes in gmredi:
2188      * adgmredi_calc_tensor
2189        avoiding all recomputation of gmredi_slope_limit
2190      * adgmredi_x/y/rtransport
2191        added flag for excessive storing to avoid recomp. of
2192        u/v/rtans, dTdx/y/z
2193        -> this is not really necessary and very memory-consuming
2194      * adgmredi_slope_psi:
2195        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2196      * gmredi_slope_limit
2197        re-activated full calculation of taperfct for case 'ac02'
2198    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2199    
2200    checkpoint47i_post
2201    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2202    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2203      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2204    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2205    o gmredi: fix few bugs.
2206    
2207    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2208    This will be a good checkpoint to plug into the ecco-branch.
2209    o few modif.'s to get latest version adjointed
2210      (mainly kick out code in ini_linear_phisurf)
2211    o modif's to run adjoint with exactConserv
2212    o case GM_BOLUS_ADVEC should be cleaned
2213      S/R gmredi_slope_psi should be cleaned
2214    o verification/carbon now has exactConserv=.TRUE.
2215    
2216    checkpoint47g_post
2217    o time-average AIM output: becomes independent from statvars time-average
2218      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2219    o After TAF bug fix:
2220      Tested adjoint of gmredi package.
2221      Tests were done with checkpoint47 rather than with latest
2222      checkpoint47f_post since the latter is broken for the adjoint
2223      verification/carbon/ contains both ADM and TLM gradient checks.
2224    Here they are, before they get changed/lost/stolen.
2225    Mostly modif.'s to fix numerical sensitivities.
2226    Gradient checks OK for
2227    - GM_taper_scheme:
2228      * clipping
2229      * ac02
2230      * linear
2231      * glw91
2232      * dm95
2233      * ldd97
2234    - GMREDI_OPTIONS:
2235      * GM_VISBECK_VARIABLE_K
2236      * GM_NON_UNITY_DIAGONAL
2237      * GM_EXTRA_DIAGONAL
2238      * GM_BOLUS_ADVEC
2239    in conjunction with data.gmredi parameters to be checked in
2240    in a few minutes under verification/carbon/code/
2241    
2242    checkpoint47f_post
2243    Merging from release1_p10:
2244    o modifications for using pkg/exf with pkg/seaice
2245      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2246        and SEAICE_EXTERNAL_FLUXES
2247      - pkg/exf CPP options EXF_READ_EVAP and
2248        EXF_NO_BULK_COMPUTATIONS
2249      - usage examples are Experiments 8 and 9 in
2250        verification/lab_sea/README
2251      - verification/lab_sea default experiment now uses
2252        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2253    
2254    checkpoint47e_post
2255    o created a tag prior to creating a branch
2256    
2257    checkpoint47d_post
2258    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2259      at the bottom boundary had an erroneous half slip boundary condition
2260    o added bottom drag and no slip boundary condition capabilities to
2261      oceanic pressure coordinates code
2262    o added new verification experiment global_ocean_pressure, this experiment is
2263      also described in the tutorial section of the manual
2264    checkpoint47d_pre
2265    
2266    checkpoint47c_post
2267    o Added a verification experiment for a global cubed-sphere ocean run
2268      -  verification/global_ocean.cubed32x32x30
2269      -  uses pkg/therm_seaice and pkg/bulk_forcing
2270    
2271    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2272    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2273      when using P-coordinate; only implemented for atmospheric config.
2274    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2275      NOTES: requires option NONLIN_FRSURF to be "#define".
2276    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2277    
2278    checkpoint47b_post
2279    Merging from release1_p9:
2280    o pkg/seaice
2281      - removed GOTO's and added taf directives
2282      - double precision constants to reduce the g77 (Linux)
2283        to F77 (SGI) differences reported in release1_p8
2284    o tools/genmake
2285      - added SGI options
2286    o verification/testscript
2287      - updated to that of checkpoint47a_post
2288    o verification/global_ocean.90x40x15/input/eedata
2289      - modified for SGI f77 compatibility
2290    o verification/lab_sea
2291      - added description of sea-ice model
2292      - added missing matlab routines
2293      - added test of thermodynamics parallelization
2294    
2295    checkpoint47a_post
2296    o new pkg: aim_v23
2297     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2298       for now, keep the same surface forcing as before.
2299     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2300     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2301     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2302    o add diagnostic of surface correction term in monitor output
2303    
2304    o bulk_force and therm_seaice
2305    - Two packages:  bulk_force (Bulk forcing)
2306      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2307    - Earlier integration from Stephaine Dutkiewicz
2308      and Patrick Heimbach.
2309    - Two ifdef statements for compile time,
2310       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2311    
2312    checkpoint47
2313    differentiable version of checkpoint46n_post
2314    o bug fix in quasihydrostaticterms
2315    o * "clean" adjoint code (in terms of extensive recomputations)
2316        can now be obtained for all GMREDI options (i.e. for
2317        - GM_VISBECK_VARIABLE_K
2318        - GM_NON_UNITY_DIAGONAL
2319        - GM_EXTRA_DIAGONAL
2320        - GM_BOLUS_ADVEC )
2321      * However, wrong gradient check problem remains unsolved.
2322      * New CPP options have been introduced for different
2323        tapering schemes
2324    o external_fields_load now part of differentiation list
2325    o pressure needs multiple storing;
2326      would be nice to have store_pressure at beginning or
2327      end of forward_step, e.g. by having phiHyd global (5-dim.)
2328      (NB: pressure is needed for certain cases in find_rho,
2329      which is also invoked through convective_adjustment).
2330    o recomputations in find_rho for cases
2331     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2332    o #define ATMOSPHERIC_LOADING should be differentiable
2333    o ini_forcing shifted to begining of initialise_varia
2334    o Incorporating QNVS line search routines into MITgcm
2335      (this is separate code, and therefore not under pkg)
2336      lsopt/, optim/
2337    o Updated verification/carbon/
2338      - #define GM_VISBECK_VARIABLE_K
2339      - GM_taper_scheme    = 'ldd97'    
2340    
2341    checkpoint46n_post
2342    Merging from release1_p8:
2343    o verification/natl_box:
2344      updating new external_fields_load routine
2345    o New package: pkg/seaice
2346      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2347      The sea-ice code is based on Hibler (1979-1980).
2348      Two sea-ice dynamic solvers, ADI and LSR, are included.
2349      In addition to computing prognostic sea-ice variables and diagnosing
2350      the forcing/external data fields that drive the ocean model,
2351      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2352      The implied surface heat flux is then stored in variable
2353      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2354      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2355      non-local transport term.  Because this call precedes model
2356      thermodynamics, temperature under sea-ice may not be "exactly" at
2357      the freezing point by the time theta is dumped or time-averaged.
2358      N.B.: fairly large differences in accuracy occur across
2359            different platforms/compilers; comparison between
2360            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2361            generated output gives:
2362       T           S           U           V
2363      C D M    c        m  s        m  s        m  s        m  s
2364      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2365      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2366      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2367    
2368      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2369    o GAD:
2370      - generated new common blocks to account for call of
2371        same gad routines with differing traceridentities
2372        (needed to modify tracerIdentity indices in GAD.h)
2373      - generated separate common blocks for case useCubedSphereExchange
2374        (Department of Futurology)
2375      - parameter lists to gmredi_?transport: added tracerIdentity
2376      - added new key indices to tamc.h
2377    o external_fields_load:
2378      - added this routine to TAF list
2379      - needed to make some common blocks global and additional storing
2380        along the same lines as exf package (checkpoint_lev?_directives.h)
2381    o exf:
2382      updated external forcing package
2383      - bug fixes carried over from ecco-branch
2384        (missing OBCS_OPTIONS.h in two routines)
2385      - enable easy to use "no forcing".
2386      - added exf I/O for atmospheric loading
2387      - added exf I/O for runoff data
2388      - transfered scaling between exf <-> MITgcm to exf namelist
2389    o Adding new verification experiment global_with_exf.
2390      This verification experiment is almost identical to the
2391      global_ocean.90x40x15 experiment, except that it uses
2392      the exf (and cal) package instead of the
2393      external_fields_load routine (cf README file).
2394    
2395    checkpoint46m_post
2396    o modified testscript to return -- when there are no lines of "%MON" output
2397    o added new flag "quasiHydrostatic" for QH mode
2398      and new routine quasihydrostaticterms()
2399    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2400      New routine: mom_u_coriolis_nh()
2401    o fixed sign of non-hydrostatic metric terms in u and v equations.
2402      Depend on correct sign of gravitySign.
2403    o added work.pc* to .cvsignore in aim directories using ifc
2404    o introduced flag for controllin non-hydrostatic metric terms
2405    o removed gravitySign from PARM04
2406    o switched to g77/ifc from pgf77 in aim experiments
2407    
2408    checkpoint46l_post
2409    o made convective adjustment work with pressure coordinates:
2410     - changed the direction of k-loop in convective_adjustment.F for the
2411       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
2412     - adjusted the reference pressure k-index in convective_adjustment.F
2413     - adjusted the convection condition in convect.F (in analogy to
2414       calc_ivdc.F)
2415     - convective_adjustment no longer computes anything on the halos
2416     - removed the warnings about negative salinity from find_rho.F and
2417       find_alpha.F; instead the new routine look_for_neg_salinity, called
2418       at the beginning of find_rho, find_alpha, and find_beta, does a
2419       check of the entire slice, if CPP-option
2420       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
2421    checkpoint46l_pre
2422    
2423    checkpoint46k_post
2424    o fixed the verification/global_ocean.90x40x15 experiment:
2425     - new bathymetry (the world according to A., JMC, and M.)
2426     - new initial fields and forcing fields (*.bin files)
2427     - new POLY3.COEFFS (for the next release one should switch to a full
2428       equation of state: JMD95P or MDJWF)
2429     - fixed several errors and redundancies in the data file
2430     - experiment uses looped cells
2431     - added matlab directory with diagnostic scripts for plotting of output
2432    
2433    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
2434     - read AIM physics parameters from a file (data.aimphys)
2435     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
2436    
2437    checkpoint46j_post
2438    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
2439    o move wVel computation at the end of the time step, in S/R integr_continuity
2440    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
2441    o update timeave pkg for wVel diagnostic.
2442    checkpoint46j_pre
2443    
2444    checkpoint46i_post
2445    o Clean up AIM package (and keep the results unchanged):
2446      include CPP_OPTION and use IMPLICT NONE in all routines ;
2447      declare all the variables _RL ; use _d 0 for all numerical constants.
2448      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
2449    
2450    checkpoint46h_post
2451    o cleaned up the use of rhoNil and rhoConst.
2452      - rhoNil should only appear in the LINEAR equation of state, everywhere
2453        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
2454        and the dynamical equations are all divided by rhoConst
2455    o introduced new parameter rhoConstFresh, a reference density of fresh
2456      water, to remove the fresh water flux's dependence on rhoNil. The default
2457      value is 999.8 kg/m^3
2458    o cleanup up external_forcing.F and external_forcing_surf.F
2459      - can now be used by both OCEANIC and OCEANICP
2460    checkpoint46h_pre
2461    
2462     Added code to convert surface volume flux (fresh water) into
2463     a mass flux when using P coordinates in the ocean (OCEANICP).
2464     Note: It assumes you have set rho0=rhoConst=density of fresh water.
2465    
2466    checkpoint46g_post
2467    o Include a new diagnostic variable phiHydLow for the ocean model
2468      - in z-coordinates, it is the bottom pressure anomaly
2469      - in p-coordinates, it is the sea surface elevation
2470      - in both cases, these variable have global drift, reflecting the mass
2471        drift in z-coordinates and the volume drift in p-coordinates
2472      - included time averaging for phiHydLow, be aware of the drift!
2473    o depth-dependent computation of Bo_surf for pressure coordinates
2474      in the ocean (buoyancyRelation='OCEANICP')
2475      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
2476        Theta, Salinity, and Pressure in the parameter list. This routine is
2477        presently contained in find_rho.F. This routine does not give the
2478        correct density for 'POLY3', which would be a z-dependent reference
2479        density.
2480    o cleaned up find_rho
2481      - removed obsolete 'eqn' from the parameter list.
2482    o added two new verification experiments: gop and goz
2483      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
2484    checkpoint46g_pre
2485    
2486    checkpoint46f_post
2487    o Enable tangent linear (forward mode) gradient checks:
2488      - extended active file handling to g_... files
2489      - added TANGENT_SIMULATION to theSimulationMode
2490      - extended grdchk package accordingly
2491    o added tangent linear setup in verification/carbon/code_ftl
2492    o added adjoint setup in verification/front_relax/code_ad
2493    
2494    checkpoint46e_post
2495    o Added new equation of state -> MDJWF
2496      - EOS of McDougall et al., 2002, JAOT, submitted
2497      - caveat: the equation of state is only valid for a smaller (more
2498        realistic?) range of values than JMD95P/Z and UNESCO
2499      - added masks to the calculation of pressure in store_pressure
2500      - added more check values for density in check_eos (ini_eos.F), some of
2501        the old check values are out of the range of the MDJWF-eos, so don't
2502        expect perfect matches for those
2503    checkpoint46e_pre
2504    
2505    checkpoint46d_post
2506    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
2507      'OCEANICP', also initialised field pressure correctly in ini_eos in the
2508      case of pressure coordinates. eosType='JMD95Z' in
2509      combination with buoyancyRelation='OCEANICP' now causes an error.
2510    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2511      in find_alpha/beta.
2512    checkpoint46d_pre
2513    
2514    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2515      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
2516    
2517    checkpoint46c_post
2518    o Changes necessary for ocean in p-coordinates
2519     -  Added new buoyancy relation = 'OCEANICP'
2520     -  Added new parameters = gravitySign (this used to be contained inside
2521        the factor dRdZ which I added when we first switched to R coordinates).
2522     X GM/Redi is not compatible (yet)
2523     X bottom drag and no-slip need to be debugged.
2524    checkpoint46c_pre
2525    
2526    checkpoint46b_post
2527    o Added new equation of state -> JMD95Z and JMD95P
2528      - EOS of Jackett and McDougall, 1995, JAOT
2529      - moved all EOS parameters into EOS.h
2530      - new routines ini_eos.F, store_pressure.F
2531    o Added UNESCO EOS, but not recommended because it requires
2532      in-situ temperature (see JMD95)
2533    o Modified formatting for knudsen2.f in utils/knudsen2 and added
2534      unesco.f to be used with POLY3
2535    checkpoint46b_pre
2536    
2537    checkpoint46a_post
2538    o Added (atmospheric) pressure loading
2539      - new field in FFIELDS.h, etc...
2540      - new cpp flag ATMOSPHERIC_LOADING
2541    o Changed hFacC to _hFacC in calc_phi_hyd.F
2542    o Added SHORTWAVE_HEATING to some files for consistency
2543    checkpoint46a_pre
2544    
2545    checkpoint46
2546    further merges from release1_p5
2547    o new ctrl package
2548      - adopted from ECCO environment to enable optimization
2549      - added Eliassen Palm fluxes to controls
2550    o added Eliassen Palm flux controls to gradient check package
2551    o cost package
2552      - Compatible with new ctrl package
2553      - added Eliassen Palm cost hooks
2554      - modif's of existing cost functions
2555    o Adjoint-related bug fixes in kpp:
2556      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
2557      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
2558    o autodiff package
2559      - flow directives:
2560        + new for S/R do_the_model_io
2561        + enhanced for S/R checkpoint
2562        + new gmredi.flow
2563      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
2564        disable adcommon.h/g_common.h by default.
2565      - fixed problem for adjoint of global_max
2566    o modified verification/carbon/
2567    o New setup for adjoint of global_ocean
2568    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
2569    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
2570    o incorporated hooks for sponge layer code (external_forcing.F)
2571    
2572    checkpoint45d_post
2573    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
2574  o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S  o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
2575    (affects plume_on_slope "cg2d" output)    (affects plume_on_slope "cg2d" output)
2576    o add new parameter deltaTfreesurf for free-surface time stepping
2577    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
2578  o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B  o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
2579  o change phiMin in exp1 (to agree with documentation)  o change phiMin in exp1 (to agree with documentation)
2580  o add new flags:  o add new flags:

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