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revision 1.75 by jmc, Thu Jun 20 23:52:03 2002 UTC revision 1.772 by jmc, Fri Feb 16 00:30:01 2007 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
8    o move call to cal_readparms up to make calendar parameters/variable available
9      to all packages
10    
11    checkpoint58v_post
12    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
13      useDynP_inEos_Zc tested.
14    o pkg/exf: changes to properly interpolate/mask/scale initial fields
15    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
16      and portions thereof.  See read_cs.txt for description and examples.
17    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
18      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
19      following the great-circle arc between those 2 points.
20    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
21      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
22    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
23     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
24     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
25     - still needs work (not working with some options ; efficiency to improve)
26       and serious testing.
27     - use this scheme for temperature & salinity in 2 advection test exp.:
28       advect_xy & advect_xz, respectively.
29    
30    checkpoint58u_post
31    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
32    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
33    o testreport: add option "-skipdir" to skip some test.
34    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
35      momentum calculation.
36    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
37    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
38      remove checkpoint.F and the_correction_step.F (no longer used);
39      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
40    o add option (linFSConserveTr) to correct for tracer source/sink due to
41      Linear Free surface
42    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
43    o pkg/thsice: fix reading mnc-pickups
44    
45    checkpoint58t_post
46    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
47    o pkg/mdsio:
48     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
49       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
50       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
51     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
52     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
53       either MDS_READ_FIELD or MDS_WRITE_FIELD )
54     - new S/R (to replace MDSWRITEMETA), which allows to write more
55       informations (variable names, time ...) to meta files.
56     - modify rdmds.m to give back the meta file content.
57    o pkg/diagnostics: change vertical interpolation to be safer, and more
58       flexible (define p-levels to interpolate to in data.diagnostics);
59      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
60       diagnostic pointer.
61    o pkg/seaice: more cleaning up of seaice_growth, added many comments
62    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
63    o fix multi-category seaice:
64     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
65       SEAICE_MULTICATEGORY
66     - fix short wave heat flux
67    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
68       and allow to use EVP solver. Change forward lab_sea: test both EVP
69       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
70    o Initial check-in of lab_sea adjoint
71      (very similar to natl_box_adjoint/code_seaice)
72      * used C-grid and EVP solver
73      * used KPP, GM/Redi
74      * uses inAdExact=.TRUE.
75      * gradient checks fail for both ADM and TLM
76        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
77        f.d. gradients actually seem more problematic than ADM, TLM gradients;
78        issue is related to forward mismatch between g77 an ifort
79    o pkg/seaice: overhaul of thermodynamics
80     - growth.F and groatb.F are replaced by new routine seaice_growth.F
81     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
82     - move a few global fields out of SEAICE.h into seaice_growth.F and
83       make them 2D (FICE/QNETO/ ...)
84     - remove FO (it is the same as QNETO)
85     - introduce a few local fields to avoid modifying external fields such
86       as atemp, etc.
87    
88    checkpoint58s_post
89    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
90      changed exf_set_gen.F so that
91        genperiod=0 means input file is one time-constant field and
92        genperiod=-12 means input file contains 12 monthly means
93    o CG2D: use pre-computed solver main-diagonal (stored in common block);
94      this affects truncation error ; generate new output file for exp. which
95      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
96        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
97        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
98        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
99        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
100        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
101    o start implementation of deep-atmosphere and anelastic formulation
102    o verification: remove 2nd copy of input files and use script "prepare_run"
103      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
104    o mom_common/vecinv/fluxform: fix a few initialisation isssues
105    o profiles: fix for multithreaded case
106    
107    o diagnostics: rename few diags:
108      s/'PRESSURE'/'RCENTER '/g
109      s/'TICE    '/'oceFreez'/g
110      s/'TAUX    '/'oceTAUX '/g
111      s/'TAUY    '/'oceTAUY '/g
112      s/'SWFLUX  '/'oceQsw  '/g
113      s/DIFx/DFxE/g
114      s/DIFy/DFyE/g
115      and add few ocean-forcing diagnostics:
116      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
117    o modifications to pkg/seaice/growth.F and budget.F, which change results of
118      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
119      as actual snow thickness.  It now refers everywhere to effective snow
120      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
121    
122    checkpoint58r_post
123    o modifications to pkg/seaice/growth.F, which change results of
124      lab_sea experiment: fixes pertain to melting snow over open water, to
125      masking EVAP under sea ice, and to using the correct AREA variable for
126      computations of EVAP, PRECIP, HSNOW, and GHEFF
127    o add ability to read bathy, salt, and theta using MNC (off by def)
128    o add flooding algorithm and advection of HSNOW for pkg/seaice;
129      both are turned off by default and do no change any results
130    o seaice advection with pkg/thsice: a step toward the use of non-linear
131      advection scheme, but #ifdef or commented out for now (requires more EXCH).
132    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
133      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
134      in natl_box (affects results @ truncation level: update output.txt)
135    o multi-threading and IO:
136      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
137      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
138        (needed to work with SingleCpuIO): tested in all verif. exp.
139    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
140      affects the results (but none of the verification test uses this scheme).
141    o Adding some pkg/diagnostics capability to pkg/seaice
142      (will certainly be subject to changes)
143    o ctrl: adding new control variables:
144      lwflux, lwdown, evap, snowprecip, apressure, runoff
145    
146    checkpoint58q_post
147    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
148      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
149      high_res_cube configuration by 4% on Columbia.
150    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
151      add (in global_with_exf/code) a version of EXF_INTERP_READ without
152      dynamical allocation (seems to work in multi-threaded).
153    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
154      single CPU io) so that TAF does not have to see EESUPPORT.h
155    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
156    
157    checkpoint58p_post
158    o obcs: stop if obcs is used with useCDscheme = .true.
159    o shelfice:
160     - fix a sign error so that no slip at shelfice interface works
161     - remove stop for combination non-hydrostatic code and shelfice. That does
162       not mean, that the results are correct, but at least they are numerically
163       stable
164    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
165    o added adjoint exch routined for all exch*3d* routines
166      and updated flow directives
167    
168    checkpoint58o_post
169    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
170      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
171    o change controling S/R for writing pickup file (new S/R do_write_pickup)
172      and clean-up reading/writing of pickup files.
173    o fix local version of read/write pickup (NH part) in rotating_tank/code
174    o simplify EXCH interface:
175     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
176     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
177    o added the regrid package
178    o shelfice:
179     - add a simple boundary layer scheme to reduce noise
180     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
181    
182    checkpoint58n_post
183    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
184       local variable (not in common block).
185    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
186      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
187      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
188        to work with SingleCpuIO.
189    o add "_d 0" to real constant of pkg/cfc subroutines ;
190       update exp. cfc_exemple & tutorial_cfc_offline output files.
191    o multi-threading and IO:
192      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
193        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
194      - barrier before and after reading.
195      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
196      - avoid using MDS_WRITELOCAL for LAND pkg output.
197      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
198        common-block variables ; Allows multi-threading with master-thread IO.
199    o change default MAX_NO_THREADS from 32 to 4 ;
200      and stop cleanly when MAX_NO_THREADS is too small.
201    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
202    
203    checkpoint58m_post
204    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
205       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
206    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
207       keep global_ocean.90x40x15 (for AD testing) with former secondary test
208       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
209    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
210        add MITgcm_tutorials (= code + all the tutorials)
211    o ecco, option to compute cost for total ssh (mean+anom)
212    o consistent with addition of ptracer and ssh in pkg/profiles
213    o profiles: adding ptracer and ssh
214    o testreport: change multi-test output-file name
215      (from output.txt.{name} to output.{name}.txt)
216    o profiles: now ok for mutli-tiles case
217    o seaice: add 4 parameters for different advection schemes for area,
218      (effective) seaice thickness, enthalphy, and snow height. Their default
219      is the standard parameter SEAICEadvScheme
220    o calc_gw:
221     - add cosFacU in zonal viscous flux (harmonic.visc.).
222     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
223       of tutorial_plume_on_slope.
224    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
225    o calc_gw: true flux-form, account for horizontal grid spacing.
226      update rotating_tank results, but not plume_on_slope (affected at
227      truncation level, 11 digits).
228    
229    checkpoint58l_post
230    o calc_gw:
231     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
232     - remove side-drag for now (need to fix it); update plume_on_slope results.
233     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
234    o commit code to make SST/SSS weights spatially variable
235      (based on either variable in-situ or variable initial T/S weights)
236    o pkg/ecco:
237      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
238        now based on horizontally varying weights wthetaLev, wsaltLev
239      * cost_averagesflags now returns year indices in addition to day, month
240      * sflux balance is performed on annual basis
241        (sflxumm, sfluxmm2, bal_sfluxmm)
242      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
243        including separate counting and multipliers
244    o pkg/rbcs
245      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
246    
247    checkpoint58k_post
248    o testreport:
249     - always build in dir. "build" (if not there, mkdir build instead of building
250       & running in input)
251     - run in dir run (if it exists), in build otherwise.
252     - call prepare_run (if input/prepare_run exists)
253     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
254    o pkg/exf modifications to interpolation and rotation routines for more
255       reasonable treatment of North Pole singularity: for tracers North Pole
256       value is set to northernmost zonal-mean value, for zonal velocity it is
257       set to zero, and for meridional velocity it is set to northernmost value.
258    o pkg/exf/exf_check_range.F
259     - add tile index to diagnostics and move stop statement to the very
260       end of the routine.
261    o pkg/diagnostics: (diagnostics_main_init.F)
262      define title of isomorphic variables according to the current config.
263    o pkg/thsice with pkg/seaice dynamics:
264    - fix domain of computation (interior only, required for exf) and do exchanges
265    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
266    o towards a standard way of dealing with multi-threading in MONITOR
267      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
268    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
269       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
270    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
271    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
272    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
273       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
274    o tracer advection:
275     - clean-up and simplify calc_common_factors.F
276     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
277       advection subroutine (but still not used within DST advection S/R)
278    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
279    
280    checkpoint58j_post
281    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
282      from file (collects calls previously in FORWARD_STEP)
283    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
284    o adjoint store dir. adjusted accordingly
285    o genmake2
286      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
287    
288    checkpoint58i_post
289    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
290      on wind stress (SEAICEstressFactor defaults to 1.)
291    o Total number of Timers is finite (<=40): comment out 2 non-essential one
292      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
293    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
294      on CS-grid: no longer loosing mass.
295    o exf & curvilinear-grid: no longer modify longitude xC & xG.
296    o pkg/ggl90: fix sloppy output and fix a bug
297    o pkg/seaice: added SEAICEuseEVPpickup parameter
298      - Set to false in order to start EVP solver with
299        non-EVP pickup files when using SEAICEuseEVP
300      - fix sign error in diffusion in seaice_calc_rhs
301    
302    checkpoint58h_post
303    * Modifications for bottom topography control
304      o replace hFacC by _hFacC at various places
305      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
306      o add non-self-adjoint cg2d_nsa
307      o update autodiff support routines
308      o re-initialise hfac after ctrl_depth_ini
309      o works for 5x5 box, doesnt work for global_ocean.90x40x15
310    * Adding verification for 5x5 box (4-layer) bottom topography control
311    
312    checkpoint58g_post
313    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
314       used for mean seasonal cycle, mean diurnal cycle); add an example
315       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
316    o pkg/ggl90:
317      - add parameter (minimum surface kinetic energy)
318      - fix bug (avoiding division by zero)
319    o couple pkg/thsice to pkg/seaice:
320      - modify advection in seaice to accomodate new scalar fields to be advected
321      - only muliDimAdection scheme work with seaice/thsice
322      - mapping of thsice-variables to seaice-variables, back and forth
323      - does not break the verification experiments, but does not give the
324        desired results either
325    o pkg/seaice
326      - make (default) second order advection a bit less confusing?
327    
328    checkpoint58f_post
329    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
330      to pkg/seaice):
331      - new routines thsice_map_exf and thsice_get_exf provide the interface
332      - add an additional formal parameter to thsice_solve4temp
333    o pkg/exf:
334      - add new fields wspeed, snowprecip (to be able to couple to thsice)
335      - correct Stefan-Boltzmann constant
336      - new parameter for longwave surface emittance
337      - separate some stuff from exf_bulkformulae into new routines  
338        exf_radiation, exf_wind
339      - add new parameters and constants: longwave emissivity for ocean, ice
340        and snow, evaporation parameters over ice
341      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
342        either wind from stress or stress from wind
343    o pkg/thSIce:
344    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
345    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
346       and THSICE_CALC_THICKN
347    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
348    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
349      to make debugging easier.
350    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
351    o pkg/bulk_force:
352      - clean-up comments and parameters ;
353      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
354    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
355      generate new output for test-experiment: aim.5l_cs.thSI
356    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
357      testreport accordingly
358    
359    checkpoint58e_post
360    o SEAICE_CGRID adjoint done
361    o R_STAR adjoint implemented.
362      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
363      * need to sort out init. of h0facc, etc.
364    o Make pkg/profile fully independent of ecco,cost, etc. stuff
365      to be able to use it in pure forward.
366    
367    checkpoint58d_post
368    o upgrade simple test-experiment to tutorial example:
369     step.1: duplicate the experiment and (step.2) will remove the old copy.
370      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
371      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
372      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
373      tutorial_global_oce_biogeo    <- copy of dic_example
374      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
375      tutorial_plume_on_slope       <- copy of plume_on_slope
376      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
377      tutorial_global_oce_optim     <- empty for now (David ?)
378      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
379     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
380    o correct a sign problem in cost_scat.F
381    o obcs and ptracers: fix boundary conditions for advections schemes
382      with larger stencil
383    o thsice adjoint: start
384    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
385      completeness
386    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
387      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
388    o ptracers adjoint:
389      * avoid extensive recomputatations
390      * fix missing re-init. of gptr (missed by TAF)
391    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
392      me to turn off the excessive output to STDOUT that this package produces
393    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
394      and add those terms in Vector-Invariant formulation.
395    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
396      if the control period (xx_hfluxperiod etc) is 0
397    o in profiles pkg, clean routines and fix details
398    o in ecco pkg, reading ssh data:
399      fix problem in case the model does not start at iter0=0
400    o fix mnc-pickup/restart for ptracers
401    o new package prifiles:
402      code to compute profile-based cost by Gael Forget
403      (modifs in ecco, ctrl, autodiff)
404    o Benign bug fix in initialization (spotted by M. Mazloff) of
405      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
406    
407    checkpoint58c_post
408    o adjoint: finish NLFS adjoint and provide reference output in
409      verification/global_ocean.90x40x15/results_ad_nlfs
410    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
411      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
412      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
413      with SEAICE_CGRID defined.
414    o move calendarDumps from "data" to "data.cal" and clean-up the code
415      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
416    o add useEXF & useCAL flags (for now, set in hard-coded way)
417    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
418      (were missing in NH mode, and wrong in quasihydrostatic mode).
419      waiting for Chris updated version of calc_gw to add those CALLs.
420    o fix bug in quasihydrostatic S/R ;
421      add a test for this option: global_ocean.90x40x15.qshyd
422    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
423      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
424    o add on/off flag useOffLine for package OFFLINE
425    o seaice:
426      - modify advection so that it works also on the C-grid
427      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
428        problem in multi-tile runs with C-grid
429      - add flags for clipping ice velocities and/or masking solver forcing
430      - fix drag (ocean on ice) formulation and a bug that caused noise in the
431        C-grid solver
432      - added a few comments to seaice_diffusion.F
433      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
434        are now exclusive)
435      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
436        required re-ordering the code a little:
437       + make DAIRN global variable (defined in SEAICE)
438       + move computation of the viscosities eta and zeta into a new separate
439         routine (because I need to recompute them in seaice_ocean_stress.F)
440    
441    checkpoint58b_post
442    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
443      update output.txt of exp. aim.5l_cs.thSI
444    o various mnc cleanups and improvements:
445      + shrink lookup tables by factor of ~4
446      + better error reporting when running out of lookup space
447      + able to handle longer path/file names (up to 500 chars)
448    o adjoint:
449      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
450      - TBD: "hidden" mom_vecinv recomp. in dynamics
451    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
452     (allow to differentiate between forcing components using new integer flags:
453      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
454     and add new flag to put Dissipation tendency out of Adams-Bashforth.
455    o ecco
456      - enable trend removal from SSH anomaly obs.
457    o adjoint
458      - a fix for PmEpR when #undef EXACT_CONSERV
459      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
460      - try to fix "hidden" recomp. in forward_step for NLFS
461        (NLFS seems broken sometimes after I checked it in)
462    o seaice:
463     - add c-grid version of the dynamic solver:
464       + three new routines that are the c-grid substitute lsr, dynsolver
465         and ostres
466       + put a few fields that were local to dynsolver into global common
467         blocks, so that I can move the computation of stresses etc into
468         seaice_lsr (saves coding but may break the adjoint).
469     - replace more hardwired parameters by runtime parameters
470     - add ice masks that mask the rhs of the implicit solvers where there
471       is no ice (commented out in seaice_dynsolver, because i am not sure
472       if this works properly), eventually this should replace the clipping
473       of ice velocities in seaice_dynsolver to +/-40cm/s.
474    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
475      include it only where its needed
476    o move balancing of fluxes before the call of external_forcing_surf
477    o seaice:
478      - correct units of turning angles (now they are really in degrees)
479      - move computation of GWATX/Y out of main routine into dynsolver
480      - initialize GWATX/Y in seaice_init
481    o Apply mask on Fresh-Water flux (needed for SSH forcing).
482      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
483    o seaice: add runtime flags for turning angles (default to zero)
484    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
485      and trend from exf forcing and ctrl control adjustments
486    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
487      (since checkpoint57x_post)
488    o change the default rotation period to 86164.s = the Earth rotation
489    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
490      and based on a reference stratification. Tested within hs94.cs-32x32x5.
491    o seaice advection: add code for choosing between the default (2nd order
492      central differences) and multiDim advection schemes provided by
493      pkg/generic_advdiff
494    o seaice:
495      - removed all references to SEAICE_GRID.h fields from
496        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
497        (cubed-sphere configuration will change a little)
498      - grid computations in seaice_init are obsolete now.
499      - cleaned up code a little so that is easier to read (hopefully).
500      - added new (better?) discretizations of default advection and diffusion
501        (turn on with SEAICEuseFluxForm)
502      - replace 1 in 3d global fields by kSurface in growth.F
503      
504    checkpoint58a_post
505    o seaice:
506      - bug fix in advect.F
507    o shelfice:
508      - separate shelfice load anomaly from pload (breaks with time
509        dependent forcing), => introduce constant field shelficeLoadAnomaly.
510        Its default is 0., but it may be computed more cleverly from (unknown)
511        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
512        done offline. A good approximation of the pressure load anomaly is
513        necessary to avoid large initial adjustment processes underneath
514        deep-reaching shelfice.
515      - small fix in ISOMIP shelfice_thermodynamics
516      - add more sophisticated thermodynamics of Hellmer (1989), this is
517        now the default
518      - give a few constants more intuitive names
519    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
520      if bulk formulae are used in long integration (especially EmPmR). Turn
521      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
522      if balancePrintMean, the imbalance that is substracted is printed to
523      STDOUT.
524    o fix bug (typo) in obcs_apply_eta.F
525    o add a new package shelfice which enables us to model the circulation
526      underneath shelf-ice with draughts of hundreds of meters.
527     - works
528     - to do: + include improved thermodynamics
529              + check whether kSurfC (from model/inc/SURFACE.h) can be used
530                instead of new field kTopC
531              + can we use topoFile, Ro_surf and existing code in ini_depth.F
532                instead of new field R_shelfIce and new code in ini_depth.F
533                and ini_mask_etc.F?
534              + adjust vertical mixing schemes?
535    o seaice pkg:
536     - add a cpp-flag to include a simple formula for a salinity dependent
537       freezing point of sea water at the surface
538     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
539       meridional stresses are now different (and hopefully correct)
540    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
541       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
542       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
543    o pkg/diagnostics: add options and parameters for regional-statistics
544       diagnostics ; define regions by reading a region-mask from a file
545       (might add other options later)
546    o pkg/bulk_force:
547     - add option and parameters to use AIM surface-flux formulae.
548     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
549       others forcing fields (defined in PARM05, parameter file "data") are loaded
550       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
551     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
552     - use the right EXCH call for uwind,vwind (to work on CS-grid).
553     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
554       and parameters (note: calcWindStress replaces .NOT.readwindstress).
555     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
556    
557    checkpoint58
558    o add "--embed-source" option to genmake2 which, when the supporting
559      tools can be compiled (as determined by genmake2) will turn on the
560      embed_files package which then embeds the entire MITgcm source code
561      (*.[fFhc] + Makefile) used for the build within the executable
562      - requested by CNH but off by default
563      - adds a paltry <9MB to the mitgcmuv executable in most cases
564      - only writes the output when useEMBEDSRC in eedata is true
565    o clean up 3-dim. relaxation codes:
566      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
567      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
568      * Thanks to Tom Haine for testing!
569    
570    checkpoint57z_post
571    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
572      affects output (@ truncation level) of exp. plume_on_slope ; updated.
573    o fix the pickup behavior for obcs in combination with ptracers
574    o fix a bug in ptracers_external_fields_load
575    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
576      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
577    o transfered surface NH pressure to eta field (if exactConserv).
578    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
579         and update lab_sea output.txt file.
580    o completing 3-dim. relaxation code: additional term
581         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
582      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
583      * At compile time, in "EXF_OPTIONS.h" set
584          #define  ALLOW_CLIMTEMP_RELAXATION
585          #define  ALLOW_CLIMSALT_RELAXATION
586      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
587          tauThetaClimRelax3Dim = 15552000.0,
588          tauSaltClimRelax3Dim  = 15552000.0,
589      * 3 cases:
590          1) Use a constant-in-time 3-dim. field
591          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
592          3) Real-time relax. to time-evolving prescribed field
593    o Adding Laplacian-type smoothness constraint on
594      initial and boundary (forcing) controls (ic, bc)
595      * enable at compile-time via
596        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
597      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
598      * Absolute scale somewhat unclear so far
599      * no area weighting was included since no other cost term does so far
600    
601    checkpoint57y_post
602    First step for a NLFS adjoint
603    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
604    o new init. routines for calc_r_star, calc_surf_dr
605    o still need to deal with ini_masks_etc
606    o testreport seemed happy
607    checkpoint57y_pre
608    
609    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
610    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
611    o add new offset feature to offline pkg (plus minor cleanup)
612    o cfc fixes for final year of integration
613    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
614      be in GCHEM_OPTIONS).
615    
616    checkpoint57x_post
617    o fix testreport Pb in multiple test experiment.
618    o cleanup our namelist syntax in verification:
619      - make it more F95 standards compliant (some work still needed)
620      - allows the vast majority of our tests to work with gfortran
621    o Non-Hydrostatic:
622     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
623     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
624    o Allow to apply AB on T,S rather than on AB(gT,gS):
625     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
626     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
627       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
628     - need a "clever" read_pickup to restart from the other AB formulation
629    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
630    o remove some unused variables (reduces number of compiler warnings)
631    o adjoint
632      * Disable useVariableViscosity for adjoint for time being
633        (there are a number of extensive recomputations)
634      * Initialize certain variables needed for adjoint
635    
636    checkpoint57w_post
637    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
638                 fix the singleCpuIO RS version of MDSWRITEFIELD
639       and add a WARNING if using globalFiles=T with multi-processors.
640    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
641      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
642    o tracer advection scheme:
643      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
644       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
645       was not very convenient).
646      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
647       (further tests needed for the implicit DST & Flux-Limiter schemes).
648    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
649      and sRef for convenience, handy, when you want to initialize
650      ptracers in a large domain with a constant non-zero value. Also,
651      untangle ptracers_init.F a little.
652    
653    checkpoint57v_post
654    o change dome exp. to use variable viscosity in side-drag terms.
655    o remove all the files from the cfc_offline test since they are now
656      incorporated into tutorial_cfc_offline which has been producing
657      identical results for a few days of testing
658    o add new parameter: sideDragFactor to enable half-slip-side BC
659      and change side-drag S/R to use viscosity from mom_calc_visc
660      (can switch back by setting sideDragFactor=0.); affects results at
661      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
662       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
663    o vorticity & strain are now computed without masking, to account for
664      no-slip-side BC in variable viscosity calculation ; mask is applied
665      anyway later on, before computing advection/coriolis terms.
666    o modify exp4 to test new obcs support for reading from external files
667      and for passive tracers
668    o fix behavior of ptracers_monitor when monitor output is written to a
669      netcdf-file; still not independent of monitor.F (writes in the same
670      file).
671    o change default value of tRef (put a uniform, meaningful value for ocean
672      & atmos) and initialize sRef (was missing, as Martin mentioned).
673    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
674      to be proportional to enstrophy dissipation length.  Thus,
675       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
676      This is now consistent with Smagorinsky and with the manual.
677    
678    checkpoint57u_post
679    o OBCS and PTRACERS: add open boundary support for passive tracers
680      - either use homogenous (pseudo) v.Neumann conditions or prescribe
681        OB-values from file; this is not different from the way theta and salinity
682        are treated
683      - however, Orlanski-radiation conditions are not supported, and the model
684        will stop if you use pTracers and Orlanski at the same time.
685      - beefed up the rountine obcs_external_fields_load: now only those open
686        boundary values are overwritten with values from files for which there
687        are really files, otherwise the OB-fields remain untouched. This makes
688        it possible to use different OBs at different ends of the domain (as
689        with EXF)
690    o reduce number of exch calls in shap_filt (s2).
691    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
692      truncation level) 4/5 MLAdjust test results (11&12 digits match).
693    
694    checkpoint57t_post
695    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
696    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
697      same truncation, independent of the face number: affects affects several
698      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
699    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
700      note that biharmonic viscosity + no-slip was not tested in any experiment.
701    o fix bug in non-linear free-surf side-drag ; generate new output for
702      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
703    o make mnc honor the writeBinaryPrec flag for most kinds of output
704    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
705    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
706      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
707    o add brackets in multi-terms sum to get same truncation, independent of
708      the face number (manage to get exactly same value of gU,gV at the cs-edge)
709      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
710    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
711      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
712      a maximum grid-scale Reynolds number.  Also, changes all length calculations
713      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
714      Suggested values of viscosity parameters found in mom_calc_visc.
715      Many new viscosity diagnostics available.
716    
717    checkpoint57s_post
718    o Add clearing-house for viscosity calculations, mom_calc_visc and
719      correct numerous bugs in LeithD and Smagorinsky discretizations.  
720      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
721      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
722      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
723      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
724      The Strain-Tension form is now called with useStrainTensonVisc=.true.
725      ViscAhStrain and viscAhTension are now retired.
726    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
727    o In response to JMC's bug report, genmake2 now ignores any soft-links
728      that it finds in the *current* directory when searching for files.
729      Soft-links found in any other source directories will still work as
730      they did before.
731    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
732      a C routine to unlimit the stack size
733    o mnc-ify pkg/aim snapshot vars
734    o mnc-ify pkg/land as requested by Daniel
735    o various changes to mnc including:
736      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
737      - output can now be grouped so that all files within a group
738          change the ITER portion of their names in lock-step together
739      - can now read ("global") PER-FACE (in addition to PER-TILE) files
740          and works with both EXCH1 and EXCH2 (but needs more testing)
741      - writing works for all verification test cases w/ g77 on Linux
742    
743    checkpoint57r_post
744    o make MNC variable initialization happen earlier
745    o add diagnostics for (almost) each term of the momentum Eq.
746    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
747    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
748    o remove MINIMAL_TAVE_OUTPUT option ;
749      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
750    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
751      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
752    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
753    o add time-dependent SST, SSS control
754    o cost terms in ecco/ modularized (new cost_generic.F)
755    o cost_averages routines are modularized (new cost_averagesgeneric.F)
756    o new infrastructure for seaice model vs. obs misfits in seaice/
757      * driver from the_main_loop.F is seaice_cost_driver.F
758      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
759      * gradient check in Exp. 6a of natl_box_adjoint/
760    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
761      (see README file)
762    
763    checkpoint57q_post
764    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
765    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
766      - bug was reported by Jean-Michel and Ian Fenty
767    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
768      update exp. cpl_aim+ocn output.
769    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
770      Needed for high-res. runs with large global files
771      to be able to limit tapelev size
772    o Changed some tests for adjoint:
773      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
774      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
775      * global_ocean.90x40x15/ back to default 3-level checkpointing
776    o Modifications to enable scripted COMMON to MODULE conversion
777      * verification/OpenAD/code/ has necessary scripts and description;
778      * converts, compiles and runs successfully;
779    
780    checkpoint57p_post
781    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
782    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
783      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
784    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
785    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
786      (was already the case for dissipation with mom_vecinv,
787       and also the case for grad.PhiHyd when staggered-timeStep)
788      This will allow to put dissipation out-off the AB time-stepping.
789     Unfortunately, affects truncation error. Update output of exp. that "fails"
790      (cg2d matching number) and leave the others for later: front_relax(10),
791      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
792      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
793    
794    checkpoint57o_post
795    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
796      (2) its ready to be documented during the 20050801 DocFest
797    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
798      for ideal_2D_oce and lab_sea on linux_ia32_g77
799    o set to #undef CTRL_SET_OLD_MAXCVARS_30
800      in global1x1_tot/code_seaice_adj to access indices 32, 33
801      (worth another tag)
802    
803    checkpoint57n_post
804    o adding precip control xx_precip 32
805    o adding swflux control xx_swflux 33
806    o Replacing 10 forcing penalty cost routines by 1 generic.
807    o Implementing partitioning in time-mean and variable adjustment
808      for atmos. state.
809    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
810    o in natl_box_adjoint:
811      * updated exp 1 to 10
812        (but does not have time-mean vs. variable split results yet)
813    o updated global1x1/*_seaice_adj/
814      to incorporate latest changes
815    o enable useSingleCpuIO for mdsio vector routines
816      (applies in particular to tapelev I/O)
817    o removed inefficient K-loop in all active_file*control*.F
818    
819    checkpoint57m_post
820    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
821      and advect_cs (use EXCH-2 and standard cs-32 grid files).
822    o pkg/exch2: filling of face-corner halo regions is optional
823      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
824    
825    checkpoint57l_post
826     tag before updating tutorials (pre-release-2)
827    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
828       for output and interpolation of input fields onto model grid)
829    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
830       Affects results of exp. rotating_tank ; update output.txt.
831    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
832          and taking the square quantity and/or using a fraction-weight field.
833    o fix aim_diagnostics_init.F mate numbers.
834    o add mnc output capability to diagnostics/diagstat and update
835      our cvsignore files for the ACSII output generated
836    
837    checkpoint57k_post
838    o lab_sea now uses diagnostics package and provides a suite of
839      new EXF diagnostics output.
840    
841    checkpoint57j_post
842    o exf
843      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
844        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
845        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
846      * extended diagnostics output
847        - now includes all EXF variables
848        - hs, hl moved to common block
849        - separate S/R for diagnostics, called after ctrl vector is added
850        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
851        - EXFqnet contains true Qnet (i.e. includes qsw)
852      * updated verif. lab_sea, global_with_exf
853      * Rearranging hflux (exf_mapfields -> exf_getforcing)
854        to ensure that diagnostics sees a true EXFqnet
855    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
856    o diagnostics pkg: change pointers so that 1 diagnostic can be used
857      several times with different frequencies.
858    o mnc-ify the thsice package as requested by Daniel Enderton
859      - the monitor--MNC output needs work
860      - many attributes need to be added (most are currently blank)
861    o mnc-ify theaim_v23 package as requested by Daniel Enderton
862      - many attributes need to be added (most are currently blank)
863    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
864    o add Sadourny like discretization to the 4th.O vorticity advection scheme
865    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
866      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
867         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
868    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
869     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
870    
871    checkpoint57i_post
872    o Diagnostics package was changed: diagnostic allocation is now deactivated
873      by setting an empty file name in the namelist (used to be by setting 0 frequency)
874    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
875      add 1rst Order upwind vertical Shear.
876    o add a quick fix for A/B checkpointing in OFFLINE mode
877    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
878      end-run around the C/Fortran linking horror in eesup/src/timers.F
879    o added pkg/runclock: allows user to terminate run based on wall clock
880    o added non-hydrostatic scaling parameter: nh_am2
881    o pkg/my82: futile attempt to make results compiler-independent by adding
882      some "_d 0", etc. no effect.
883    o for mnc output, fill the 'T' coordinate var with myTime and create a
884      separate 'iter' variable for iteration count
885    o pkg/diagnostics:
886      add new capability: output of Global/Regional & per-level statistics ;
887      tested against monitor output (including land & thSIce) on various exp.
888    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
889    
890    checkpoint57h_done
891      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
892      data.diagnostics, data.gchem, data.ptracers) is done.
893    
894    o pkg/diagnostics: prepare for Global/Regional statistics.
895      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
896    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
897      and rename it: DIFFERENT_MULTIPLE
898    
899    checkpoint57h_post
900    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
901    o pkg/diagnostics: change output frequency, now in seconds (instead
902      of Nb of iterations). This requires to change data.diagnostics.
903    checkpoint57h_pre
904    
905    o in mnc, let the user create the output dir if both mnc_outdir_date
906      and mnc_outdir_num are false
907    o add fflags() to pkg/diagnostics which allows one to specify, on a
908      per-file basis, the file precision [default behavior is unchanged]
909    o added diagnostics to pkg/kpp, including computation of mixed layer
910      depth based on a temperature/density criterion
911    o updated verification/natl_box to test the new pkg/kpp diagnostics
912    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
913    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
914    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
915      not mnc -- this mistake was found by JMC and is now corrected
916    
917    checkpoint57g_post
918    o add Adams-Bashforth 3rd Order time stepping:
919      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
920      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
921    checkpoint57g_pre
922    
923    o make lambda[Theta,Salt]ClimRelax spatially varying
924      (default remains spatially uniform constant based on tau)
925    o added new control variables
926      * init. uVel, vVel, etanN
927      * lambda[Theta,Salt]ClimRelax
928    o separate masks used for ctrl_pack/unpack 'from write_grid' output
929      (suggested by G. Forget)
930    
931    checkpoint57f_post
932    o add parameter "baseTime" = model base time = time at iteration zero
933      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
934      account for baseTime shift
935    o move Coriolis arrays from PARAMS.h to GRID.h
936    checkpoint57f_pre
937    
938    o mnc-ifying the seaice package
939    o introduced an alternative length scale calculation for use in the limiting
940      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
941    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
942    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
943      as well as grad(vort3).  Made it compatible with both approximate form
944      for the cubed sphere and full form of these gradients.  Added flag
945      useFullLeith to select between approximate and full form.  
946    o add "d0" in getcon.F to reduce differences between compilers/platforms
947      update output.txt of exp. fizhi-gridalt-hs
948    o change port_rand funtion to allow to set the seed.
949    o fix obscure MNC bug involving conversion between reals and integers
950      - it caused no problems with certain (eg. gcc, ifc) compilers but the
951        new version is now more standards-compliant
952    o adjoint-related modifications
953      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
954      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
955      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
956    
957    checkpoint57e_post
958    o Adding eddy stress controls a la Ferreira et al.
959    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
960    
961    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
962      update output.txt of exp. fizhi-gridalt-hs
963    o add more "Z" dimensions and associated coordinate vars to MNC
964    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
965    o parameter calendarDumps: when set, approximate months (30-31 days) and years
966      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
967      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
968      months and years.  Requires pkg/cal.
969    o diagnostics: add pickup functionality
970      - off by default for backwards compatibility
971      - current version only uses MDSIO -- MNC will be added
972    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
973    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
974    
975    checkpoint57d_post
976    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
977    o modify verification/ideal_2D_oce so that it tests the creation of mnc
978      output from the diagnostics package
979    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
980    o make genmake2 more portable by using ".$FS" instead of ".f" for more
981      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
982    o add coordinate variables to the MNC output from the diagnostics package
983    o change MNC-flags default value: true when useMNC=TRUE
984    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
985      the ability (off by default) to read the grid information using MNC
986    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
987    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
988    o do snap-shot diagnostics at the middle of the time-interval (instead of
989      at the end).
990    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
991      new test for AIM with thSIce + slab-ocean
992    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
993    o move state variable diagnostics to the beginning of the time step ;
994      (note: still needs some work specially for snap-shot diagnostics)
995      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
996    
997    checkpoint57c_post
998    o Change testing option (-ieee) to get closer agreement between g77 & ifort
999    o generate new output.txt files on faulks with g77 & the new -ieee option
1000    checkpoint57c_pre
1001    
1002    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1003      update output.txt of exp. global_ocean.90x40x15
1004    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1005      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1006    o add saltFlux(+File) forcing capability with periodicExternalForcing
1007    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1008    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1009    o improvements for the MNC output from DIAGNOSTICS:
1010      - correct handling of the unlimitied dimension
1011      - all dims now have associated coordinate variables
1012      - variables located at U, V, and Corner ("Z") points are now written
1013        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1014        *all* data points are output
1015    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1016    o added pkg/seaice/seaice_monitor.F
1017    o mdsio_readfield.F can now read files visible only to master MPI process.
1018    o pkg/seaice: some test code for ice-modified ocean stress
1019    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1020      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1021      spurious negative numbers for precipitation and humidity.  Will cause
1022      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1023    o pkg/ctrl/
1024      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1025        May be enabled via doPackDiag
1026      *  introduce z-scaling of
1027         + gradient (doZscalePack) and
1028         + control (doZscaleUnpack)
1029    o pkg/mdsio/
1030      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1031      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1032    
1033    checkpoint57b_post
1034    o simplify options in diagnostics_fill arguments (remove weird combinations)
1035    o fix MNC coordinate variables so that they now contain per-face index
1036      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1037      general, EXCH2 grids are only aligned to a "local" coordinate system
1038    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1039    o Implement instantaneous output within pkg diagnostics:
1040      setting a negative frequency in data.diagnostics produces
1041     "snap-shot" output (as opposed to time-average if freq > 0)
1042    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1043      NOTE: change ptracer diagnostics name: use 2 characters to work with
1044            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1045    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1046      becomes the coordinate variable for the 'T' dimension
1047    o add CF-style coordinate variables to MNC
1048      - just a first cut:  numbers are meaningless on the cubesphere and
1049        missing along the T axis but otherwise it works!
1050    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1051    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1052    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1053      this is based directly on what the model compute, so that the content of
1054      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1055    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1056    o clean up build options files for SunOS, in particular
1057      - remove -traditional from xmakedepend
1058      - change -xarch=v9 to -xarch=native for f77
1059      - restore use of make (not gmake)
1060      - add CC=gcc if using g77
1061    o changes per discussion of AM, JMC, & EH3 today:
1062      - move redundant "grid" variables out of "state" -- in preparation of
1063        creating proper CF-style coordinate variables and in recognition
1064        that any/all grid variables can be easily copied (eg. w/NCO) from
1065        the grid files into any of the other NetCDF files
1066      - *always* output grid variables with MDSIO (this will eventually be
1067        changed)
1068      - output MNC grid file if useMNC is true
1069    o every instance of _END_MASTER() has been found and replaced with
1070      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1071      preprocessors
1072    o re-arrange diagnostics pkg initialisation:
1073     - allow each package to extend the available diagnostics list
1074     - add some checking and fix small problems (multi-threaded, ...)
1075     - new S/R diagnostics_fill (replace fill_diagnostics):
1076       look through the short list of active diag. (instead of the long list)
1077       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1078    
1079    checkpoint57a_post
1080    o this set of changes restores TAMC compatibility
1081      tested for global_ocean.90x40x15 adjoint on trough
1082      (what a pain)
1083    
1084    checkpoint57a_pre
1085    o some modifs in tools/build_options for sunos
1086    o call ctrl_pack for ctrl at end for optimcycle=0
1087    
1088    checkpoint57
1089    o add horizontal bi-harmonic viscosity for vertical velocity
1090      - new parameter viscA4W (defaults to viscA4)
1091      - affects only non-hydrostatic code
1092      - to be done: no-slip lateral boundary conditions
1093    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1094    o implement Implicit Vertical advection for pTracers
1095    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1096      (implemented also for implicit vertical diffusion & advection)
1097    o OBCS: extend application of tracer open boundary conditions
1098      to a strip beyond the boundary of width Olx/Oly
1099    o add call monitor to TAF set of required calls (flow directives)
1100      and include in natl_box_adjoint
1101    o untangle a few ifdefs related to cost, ctrl, autodiff
1102      untangel a few ALLOW_ECCO_OPTIMIZATION
1103    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1104      (theta2, salt2 in ecco_cost_weights)
1105    
1106    checkpoint56c_post
1107    o OBCS as control variables
1108      - update ctrl_ad_diff.list, obcs_ad_diff.list
1109      - remove balance of obcs controls from default
1110      - fix index bug nobcs in ctrl_init
1111      - fix dummy fields filen in ctrl_pack
1112      - add dummy weights for obcs
1113    o lsopt: comment out fort.94 output
1114    o optim:
1115      - remove unnecessary header files
1116      - adjusted namelists
1117      - add xerbla.F to Makefile
1118    o exf:
1119      - multiple modifications of exf_check_range
1120      - unit change in exf_init_runoff from [m/year] to [m/s]
1121    o mdsio:
1122      - i/o-vector change debugLevel from debLevA to debLevB
1123    
1124    checkpoint56b_post
1125    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1126      is called from DO_THE_MODEL_IO
1127      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1128      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1129      - clean up PTRACERS_WRITE_TIMEAVE a little
1130    o add another verification experiment that tests both the cfc-pkg and
1131      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1132      reactive tendencies treated inline with regular timestepping
1133    o testreport previously did a lousy job of comparing small numbers, so
1134      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1135      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1136      testreport.
1137    o ptracers_monitor: bug fix for MPI
1138    
1139    checkpoint56a_post
1140    o GCHEM: finish reorganizating the package
1141      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1142        (introduces another 3D-array for each passive tracer, but only if
1143        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1144        gchemTendency is not needed because the timestep is done separately)
1145      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1146      - GCHEM is now---more or less cleanly---separate from PTRACERS
1147      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1148        so clear to me how that should be done in a general way.
1149    o CFC: improve formatting of output in CFC_ATMOS
1150    o PTRACERS:
1151      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1152        that ALL experiments with ptracers enable can be checked. This makes
1153        GCHEM_MONITOR obsolete.
1154      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1155        monitorFreq
1156      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1157    o add PTRACERS (PTR0[1-5]) to testreport output
1158    o exf_check_range:
1159      * default changed to .TRUE.
1160      * will check values for niter0 if debLevA, every timestep if debLevB
1161      * STOP in exf_check_range if 'out of range'
1162      * range chosen generous to allow for potential extema
1163      TBD: a version with stricter range
1164           permitted range would be runtime parameters
1165    o GMredi:
1166      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1167      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1168      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1169    o GCHEM:
1170      - move call to GCHEM_FORCING_SEP, so that it is now called before
1171        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1172      - introduced a useGCHEM runtime flag and applied it everywhere.
1173      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1174        this flag is now only visible within GCHEM-pkg routines.
1175      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1176        be replaced by a 3D array that is computed before thermodynamics; for
1177        this, the tracer ID iTracer had to be included into the parameter list
1178        of ptracers_forcing
1179      - set up forward_step to call gchem_forcing, that will replace
1180        gchem_forcing_int in ptracers_forcing
1181      - cleaning up
1182    o small cleaning of exch2: remove files that are also in eesupp/src
1183    
1184    checkpoint56
1185    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1186    o mnc: cleanup "full" files--fixes out-of-memory problem
1187    o ECCO-GODAE
1188      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1189      * fully merged and updated from SIO code
1190        windstress sign change affects
1191        - exf_inscal_[u/v]stress
1192        - sign of xx_tau[u/v] adjustments
1193        - signs in cost_scat
1194      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1195      * natl_box_adjoint updated and compressed
1196      * 2-level checkpoint switch added
1197        (tested in EXP. 1 of natl_box_adjoint)
1198      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1199    o SVD
1200      * first complete, non-hacked version for SVD calculations
1201      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1202        performed via direct access files admtlm_vector.it????
1203        (via ctrl_[un]pack)
1204      * optimcycle is used for ARPACK iteration counter
1205        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1206      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1207        and add linear transforms where necessary
1208      * controls are initial/final SST, SSS (can be extended; need to check
1209        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1210    o mdsio: filename info to both stderr, stdout
1211    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1212      from sign change
1213    
1214    checkpoint55j_post
1215    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1216      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1217    o add consistent build directories and .cvsignore files to verification
1218    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1219    o make all subroutines 30 or less characters in length for certain older
1220      compilers to work (a thorough search only turns up two routines in
1221      pkg/ptracers)
1222    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1223      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1224    
1225    checkpoint55i_post
1226    o change arrays for total vertical diffusivity (2.D if explicit,
1227      3.D if implicit) ; each ptracer uses its own background value.
1228    o added mnc/NetCDF output capability to ocn_compon_interf
1229      - added bits to verification/cpl_aim+ocn so that it can run on
1230        ITRDA and other clusters without the mpirun "-wd" option
1231    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1232      configuration
1233    o give MNC the ability to create additional files rather than
1234      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1235      - the default is just less than 2GB which is a practical limit
1236        on many systems
1237    o Compute the non-local term using either KPP vertical diffusivity (=default)
1238       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1239    
1240    checkpoint55h_post
1241    o add verification test "vermix"
1242    o remove all the *_ioinc flags and replace with the single global
1243      outputTypesInclusive flag
1244    o allow to set a vertical profile of vertical diffusivity for T & S
1245    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1246    o useMNC moved from data.mnc to data.pkg
1247    
1248    checkpoint55g_post
1249    o Renaming carbon AD experiments to comply with testreport conventions
1250    o Updating adjoint of Held-Suarez hs94.1x64x5
1251    o Fixing directives for non-ECCO forward_step, after ECCO directives
1252      have been fixed to avoid recomp. of do_oceanic_phys
1253      Works well for global_ocean.90x40x15,
1254      but recomp. issue remains for carbon
1255    o Updating adjoint output for natl_box_adjoint after
1256      pkg/ecco has been modified (see taga c55d_post)
1257    
1258    checkpoint55f_post
1259    o rename to timeave_init_fixed
1260    
1261    checkpoint55e_post
1262    o some delicate re-shuffle of store directives to avoid one
1263      extra call of do_oceanic_physics
1264      affects ecco_the_main_loop.F, do_oceanic_physics.F
1265      checkpoint_lev1_directives.h
1266    o NB: this may break global_ocean adjoint temporarily,
1267      but it is clear how to fix it. Will do later, need this now.
1268    
1269    checkpoint55d_post
1270    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1271    o ecco_cost_weights is modified to 1x1 runs
1272    o modifs to allow observations to be read in as
1273      single file or yearly files
1274    o enable to read exf forcing fields as either
1275      single file or yearly files (flag useExfYearlyFields)
1276    checkpoint55d_pre
1277    
1278    o switch between 2-level and 3-level checkpointing
1279    o add ability of MNC to write local and "partial" (eg. 2D slices where
1280      the full 3D field is never actually stored) arrays to NetCDF files
1281      with the correct (that is, the complete multi-dimensional) set of
1282      array indicies
1283      - used in mom_vecinv() to write the diagFreq output
1284      - tested (demonstrated) in verification/aim.5l_cs
1285    o further mnc-ification
1286      - add verification/lab_sea to the list with mnc setups
1287      - fix undefined mnc v-names in cd_code
1288      - add kpp to mnc output (both snapshot and timeave)
1289    o non-hydrostatic code
1290      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1291        in calc_gw.F
1292      - defaults to viscAh
1293      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1294        friction or Leith) in non-hydrostatic mode, as long as there is
1295        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1296    o pkg/cost
1297      extend simple cost functions to treat time mean quantities
1298      (T,U,V) via cost_accumulate_state from cost_tile
1299    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1300        be 2 times larger than the minimum size the advection scheme requires.
1301        now get a perfect conservation of salt in advect_cs test-exp (updated)
1302    o GGL90 (Gaspar's TKE mixed layer)
1303      - add horizontal diffusion of TKE, requires exchanges in
1304        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1305        default. In OPA there is no horizontal diffusion of TKE but the
1306        mixing coefficients are computed from a horizontal average of TKE of
1307        6 points or so. I think that diffusion has a little more physical
1308        justification.
1309      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1310        was in vain)
1311      - mask tke-variable in ggl90_init
1312    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1313    o fix biharmonic diffusion on CS-grid.
1314    o more obcs stuff
1315      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1316        for reading boundary values. This routine is called from
1317        obcs_prescribe_read
1318      - updated obcs_check
1319      - changed sponge layer relaxation parameter units for days to seconds
1320      - turned off sponge layer by default
1321      - changed argument list of OBCS_CALC to myTime+deltaTclock
1322      - fixed about 35 bugs in obcs_external_fields_load
1323    
1324    checkpoint55c_post
1325    o obcs stuff
1326      - new runtime flags useOBCSprescribe, useOBCSbalance
1327      - re-arranged obcs_calc
1328      - moved exf_getobcs to obcs_prescibe_read
1329        obcs_prescibe_read is called after ORLANSKI stuff
1330        and independent of it (executable can contain all).
1331      - updated obcs_check
1332      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1333        These may be necessary only if tangential velocities are
1334        prescribed at OB, not sure, needs testing.
1335    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1336      which simplifies the calls and passes the ifc check-bounds test
1337    
1338    checkpoint55b_post
1339    o add a 2D scalar, Z location, exchange_2 routine.
1340    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1341      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1342      affects advect_cs results (for the wrong reason): update output.txt
1343    o use a more standard discretization for biharmonic viscosity ;
1344     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1345      affects results of dome set-up: update output.txt
1346    o fix gad_advection.F (CubedSphere part), back to version 1.23
1347    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1348    
1349    checkpoint55a_post
1350    o merged code to
1351      * prescribe/read time-dependent open boundaries
1352        (works in conjunction with exf, cal)
1353      * sponge layer code for open boundaries
1354      * each boundary N/S/E/W now has its own CPP option
1355        (healthy for the adjoint)
1356    
1357    checkpoint55
1358    o up-to-date adjoint of previous breaks
1359      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1360      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1361      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1362      - carbon: * remove tr1-related adjoint verification
1363                * add ptracer as control variable
1364    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1365      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1366    
1367    checkpoint54f_post
1368    o in verification/carbin/ remove experiment related to
1369      ALLOW_PASSIVE_TRACER (array tr1 etc)
1370      code_ad/ input_ad/ results_ad
1371    
1372    o add two new packages
1373      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1374        + subject to optimization (memory)
1375      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1376        + subject to reordering (many GOTOs in the original code)
1377        + so far opps is called for every (i,j) point, and then operates in
1378          the vertical; one may want to reorder the scheme in order operate in
1379          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1380          fields)
1381    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1382      - all verification tests compile and run with linux_ia32_g77
1383      - defaults are compatible with current input files--nothing
1384        should change if you were not previously using MNC
1385      - MNC output has been added in numerous places (eg. timeave)
1386        but there are still a few writes not yet do-able with MNC
1387        (this is in progress)
1388      - flags now allow for either/or/both use of MDSIO and MNC and
1389        documentation will soon follow
1390      - numerous small formatting cleanups for ProTeX
1391    o add version info (via BUILD_INFO.h) to MNC and stdout
1392    
1393    checkpoint54e_post
1394    o add two new packages
1395      - pp81 (Packanowski and Philander, 1981), Richardson number and
1396        stratification dependent mixing
1397      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1398      - these scheme operate in a similar manner as KPP (without ghat, of
1399        course), however there is only one diffusivity that is used for both
1400        temperature and salinity (and passive tracers)ç
1401    o add offline package
1402    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1403      provided by Stephanie Dutkiewicz
1404    o genmake2: add ability to search for C compilers and cleanup test output
1405      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1406    
1407    checkpoint54d_post
1408    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1409    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1410      leading to additional shift by 5 days each year of integration
1411       (i.e. leading to considerable offset over the years)
1412    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1413    o start with no AB and no initial filtering (staggerTimeStep):
1414      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1415    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1416      (external loading & cpl import/export stay in forward_step.F)
1417    o update coupling interface to work with new staggerTimeStep
1418    o change MDSIO ptracers_pickup.
1419    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1420    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1421    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1422    
1423    checkpoint54c_post
1424    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1425      this affects (truncation error) output.txt of test-exp:
1426       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1427    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1428    o change Qnet to always be the net heat flux, (+upward).
1429      affects (truncation error) output of natl_box exp.: updated
1430    o define the max number of passive tracers in PTRACERS_SIZE.h
1431    o start to test mnc routinely in exp0
1432    o add sea-ice loading (sIceLoad) as a new forcing field.
1433    
1434    checkpoint54b_post
1435    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1436       impressive on Altix and Opteron systems)
1437    o diagnostics can now write NetCDF files through the mnc package
1438    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1439    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1440    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1441      affects (truncation error) output of lab_sea & natl_box exp.: updated
1442    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1443    
1444    checkpoint54a_post
1445    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1446    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1447    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1448    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1449      + internal_wave (shift in writing cg2d_ini_res)
1450    checkpoint54a_pre
1451    
1452    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1453      - modified verification/lab_sea and natl_box_adjoint accordingly
1454    
1455    checkpoint54
1456    checkpoint53g_post
1457    o prepare splitting of thermodynamics: store convect.counter in common block
1458    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1459      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1460    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1461    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1462    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1463    o restore adjointability
1464    
1465    checkpoint53f_post
1466    o modifications that affect AIM experiment results (update output.txt):
1467      - no advection of S at top interface Nr (pkg/generic_advdiff)
1468      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1469    o AIM pkg:
1470      - include stability function into surf.Flux derivative relative to Tsurf
1471      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1472    
1473    checkpoint53e_post
1474    o merged cylindrical coord configuration
1475    o added rotating_tank experiment
1476    checkpoint53e_pre
1477    
1478    checkpoint53d_post
1479    o faulks upgraded: re-generate output.txt that have changed:
1480       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1481    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1482    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1483    o added Sadourny discretization of Coriolis
1484      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1485      - re-enabled use of omega3 (useAbsVorticity)
1486    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1487      vector-invariant equations
1488      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1489    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1490      hopefully without new bugs
1491      - still to do: biharmonic friction for non-hydrostatic w
1492    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1493    o regenerated output for global_ocean_ebm (using -ieee)
1494    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1495      of mom_common/
1496      - simple re-arrangement of instructions within computing loop
1497    checkpoint53d_pre
1498    
1499    checkpoint53c_post
1500    o new version of coupler for AIM+thSIce and Ocean models
1501     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1502     - land: change Evaporation of snow
1503     - aim with thSIce: fix bug in snow-precip.
1504    o changes to calc_gw.F
1505     - bug fix for w^2 term near the bottom boundary
1506     - (hopefully) improve the lateral slip boundary condtions for use with
1507        partial/looped cells
1508      - because the bug fix changes two verification experiments anyway (exp5
1509        and plume on slope), change the lateral boundary condition from half slip
1510        to the value of no_slip_sides
1511    o ebm package wasnt quite up to the parallel task. Fixed that.
1512    o Adjoint of EBM package + verification
1513      * TLM OK
1514      * ADM not sufficient accuracy yet (needs further testing)
1515    
1516    checkpoint53b_post
1517    o Commiting new energy balance model to repository
1518      * package is pkg/ebm
1519      * verif. is verification/global_ocean_ebm
1520      * references are in ebm_driver.F
1521    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1522    C        Global thermohaline circulation. Part I:
1523    C        Sensitivity to atmospheric moisture transport.
1524    C        J. Climate 12(1), 71-82
1525    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1526    C        Global thermohaline circulation. Part II:
1527    C        Sensitivity with interactive transport.
1528    C        J. Climate 12(1), 83-91
1529    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1530    C        Destabilization of the thermohaline circulation
1531    C        by atmospheric eddy transports.
1532    C        J. Climate 7(12), 1870-1882
1533    o Will need long integration testing.
1534    checkpoint53b_pre
1535    
1536    o created pkg/mom_common in preparation for variable viscosity code
1537    o renamed and split ini_mnc_io
1538    o pkg/land: only liquid water can diffuse or run-off
1539    o AIM using land: soil wetness availability account for snow
1540    o added printMapIncludesZeros to EEPARMS namelist
1541    
1542    checkpoint53a_post
1543    o restore TAMC compatiility for exf_constants.h
1544      (no usage of _d in .h)
1545    o Additional storing in KPP in an attempt to fix
1546      TAMC problem with adjoint of KPP code.
1547      (no success...)
1548      Identical code works fine with TAF.
1549    o Fixed verification/natl_box_adjoint experiments.
1550      Initial conditions for Experiments 4 and 5 are now
1551      set to "SEAICE_initialHEFF=0", which is more reasonable,
1552      and hence gives results closer to that of Experiment 2.
1553      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1554    
1555    checkpoint53
1556    o stable checkpoint with up to date adjoint
1557      TLM tests only run for 1st grdchk at the moment. Its unclear if
1558      this is a code problem or a problem with resetting code for g_
1559      variables that is being autogenerated wrong.
1560      Otherwise:
1561       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1562       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1563         are both still in chaos following their security messes.
1564    
1565    checkpoint52n_post
1566    o various build (mostly genmake2) changes including:
1567      - ability to build/run more easily within Cygwin and MacOS X
1568      - more complicated Makefiles with a stronger dependence on Gnu Make
1569    o pkg/seaice modifications
1570      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1571        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1572        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1573      - changed proxy for geostrophic velocity and updated
1574        verification/lab_sea/results/* accordingly
1575      - removed ADI dynamic solver from pkg/seaice
1576      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1577        they caused a segmentation fault under certain circumstances
1578      - removed unused field WATR
1579    o bug fix in exf-package:
1580      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1581         now reflect that.
1582    o small fixes in the cal-package:
1583      - set reference date to first of January for the 'model'-calendar
1584      - failing of cal_CheckDate in cal_FullDate now actually results in a
1585        warning
1586    o small modifications in exf-package to increase flexibility:
1587      - change climtempfreeze from a constant to a runtime parameter that
1588        is specified in data.exf_clim (default = -1.9)
1589      - introduce runtime parameter windstressmax (default = 2.0) that is
1590        specified in data.exf
1591    o fix in pkg/thsice:
1592      - update Evap (Tsf changes) to be consistent with Latent heat flux
1593      - maintain snow precipitation unchanged (even if Tsf >=0).
1594     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1595    
1596    checkpoint52m_post
1597    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1598      this does not change any of the results, because myIter=0 in swfrac always
1599      lead to jwtype=2 (the default anyway), but the call makes little sense
1600      as a default
1601    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1602    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1603      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1604    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1605    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1606    o extending useSingleCpuIO option to work with new exch2 I/O format
1607      - old-style, missing-tile I/O is still accessible by defining CPP
1608        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1609    o monitor package can write to NetCDF files and/or STDOUT
1610    o fix re-definition bug in MNC_GRID_INIT_ALL()
1611    o doc/api_reference added
1612      - a framework for building an API Reference Manual using all
1613        the "protex" comments embedded in the code
1614      - see pkg/generic_advdiff, pkg/mnc for examples
1615    o MNC:
1616      - make myThid the last argument for all subroutines
1617      - new default for the grid files: NO halos
1618      - add useMNC and other run-time flags
1619      - separate per-file-group handling of the unlimited dimension
1620      - early initialization of MNC w/ flags read at the eeboot stage
1621        and lookup tables set in initialize_fixed
1622      - write all MNC output to a freshly-created directory
1623    o thermodynamics sea-ice (thsice) is now tested with testreport.
1624    o test exp. advect_cs: use the standard cs32 grid ; update output.
1625    o Added functionality to grdchk:
1626      pick global i,j,k position (or nearest wet) where to perform check.
1627    
1628    checkpoint52l_post
1629    o new land formulation:
1630      a) use ground enthalpy as prognostic variable to ensure exact
1631         energy conservation.
1632      b) account for water temperature and for latent heat of freezing
1633         in all processes (rain, run-off, ground storage)
1634      c) compute surface and ground temperature implicitly.
1635    o aim_v23 modification for new land model:
1636      a) Treat separately land / ocean / sea-ice surface fluxes
1637         to allow implicit computation of land & sea-ice surface temp.
1638      b) add snow precipitation.
1639    checkpoint52l_pre
1640    
1641    o fix problem (when 1 tile is empty) in min/max monitor.
1642    o fix bug in timeAve (u,vZetatave in common block)
1643    o no restoring terms under ice for pkg/seaice
1644    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1645    o bug fix for pkg/seaice pickups
1646    o change MNC call locations and add coordinate attributes
1647    o mask vorticity at the corner ; affects global_ocean.cs output
1648    o fix ini_curvilinear_grid ; test CS experiments with mpi
1649    o aim.5l_cs: modify sea-ice fraction input file ; update output
1650    o exf: Adding simple range check routine for exf fields after read
1651    
1652    checkpoint52k_post
1653    o removed top-level directory "diags"
1654      - we migrated these functions to pkg/timeave a long time ago
1655    o fixed bug introduced in pkg/monitor
1656    o accuracy ctrlprec = 32 insuffient for gradient checks using
1657      averaged fields (I/O via cost_averages)
1658      -> use ctrl.h in active_file*.F to control I/O precision.
1659    o paramter list of CALL ADTHE_MAIN_LOOP
1660    o added initial do_the_model_io to ecco
1661    o set all ...Freq to zero after cost_final
1662      taveFreq, dumpFreq, pChkptFreq
1663    o MAIN and ECCO differentiability restored
1664    
1665    checkpoint52j_post
1666    o fix nchklev in tamc.h for global_ocean...
1667    o Bringing flow and store directives up-to-date
1668    o Really weird thing!
1669      call do_the_model_io from the_main_loop with parameters
1670      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1671      TAF places a faulty re-call of initialise_varia
1672      after cost_final call which should not be there!
1673    checkpoint52j_pre
1674    
1675    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1676      error messages
1677    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1678    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1679      debug output
1680    o modfied mdsio_writefield.F to handle non-global files under exch2
1681    o update AIM Cubed-Sphere exp (aim.5l_cs):
1682      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1683    o update AIM Equatorial Channel exp:
1684      use standard aim_v23 pkg and change the SST fields to be more realistic.
1685    o globalFile now works with exch2
1686    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1687      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1688    o limit timeave output for hi-res integrations
1689    
1690    checkpoint52i_post
1691    o removed CPP_EEOPTIONS.h from verification/*/code
1692    o updated the tiling for global_ocean_pressure
1693    checkpoint52i_pre
1694    
1695    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1696      the old pkg/aim).
1697    
1698    checkpoint52h_pre
1699    o shortened offending lines in exch2_send_rx?.template
1700    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1701    o genmake2: add build & execute test for NetCDF code
1702    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1703      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1704    o added useSingleCPUIO flag to monitor.F and mon_out.F
1705    o added temporary hack for sea-ice dynamics on the cube:
1706      metric terms are ignored and it is assumed that
1707      there is no sea-ice on cube faces 1, 2, 4, and 5.
1708    
1709    checkpoint52f_post
1710    o added exch2 cube routines to pkg/exch2
1711    o modified hs94.cs-32x32x5 to use it
1712    o added new grid files to hs94.cs-32x32x5
1713    checkpoint52f_pre
1714    
1715    checkpoint52e_post
1716    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1717      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1718    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1719      to work with implicit vertical advection and AB ;
1720    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1721    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1722     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1723    checkpoint52e_pre
1724    
1725    o fix bug in impldiff when Nr=1 or Nr=2.
1726    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1727    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1728    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1729      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1730    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1731    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1732    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1733    
1734    checkpoint52d_post
1735    o re-tiled many expts to allow comparison in multi-processor mode
1736      - updated output accordingly
1737      - changed hs94.128x64x5 to use intial T from file rather than use the
1738        random number generator
1739    o add infrastructure in model routines for fizhi and gridalt packages
1740    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1741    o changes to permit hi-res, cubed-sphere, configuration
1742      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1743      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1744      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1745        of surface winds for the cube
1746      (A verification experiment, based on global_ocean.cs32x15, but with
1747       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1748       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1749       complete with example surface forcing files and matlab scripts to look
1750       at the output and compare it with that of global_ocean.cs32x15.)
1751    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1752       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1753       to conform to the common rule.
1754    o check-in the first version of the coupler + interfaces for multi-components
1755       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1756       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1757       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1758       - ocean and atmos. share the same horizontal grid (no interpolation).
1759       - exchanges between component and coupler is done in forward_step
1760    o new verification experiment, cpl_aim+ocn:
1761       coupled ocean - AIM atmosphere on cs32 grid.
1762    
1763    checkpoint52d_pre
1764    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1765    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1766    
1767    checkpoint52c_post
1768    o Fixing OPTIONS files for use of exf:
1769      - ALLOW_ECCO not needed
1770      - ECCO_CPPOPTIONS.h should not be included from
1771        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1772        as has been the case in the past
1773      - All cal/exf related options are currently set in
1774        single header file. Should remain so until we
1775        agree on a consistent new policy.
1776    o Removed all CPP options for cal package.
1777      cal has no more CPP options.
1778    o modified STOREs in GAD_ADVECTION
1779    o corrected key comp. for passkey
1780    
1781    checkpoint52b_post
1782    o new version: "thsice" of thermodynamic sea-ice pkg:
1783     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1784     - modify fluxes but do not change theta directly;
1785     - light cleaning of bulk_force pkg (still needed with thsice).
1786     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1787       + output_thsice.txt to test thsice & bulk_force pkgs.
1788    o put back grid & coriolis monitor output.
1789    checkpoint52b_pre
1790    
1791    o call "do_the_model_io" at the beginning (=> dump initial state)
1792    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1793    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1794      (need info on NUMBER_OF_PTRACERS)
1795    o missing PTRACERS headers in some routines
1796    o default tamc.h in pkg/autodiff supposed to crash
1797      to ensure proper customization
1798    
1799    checkpoint52a_post
1800    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1801      - moved surfaceTendencyTice from pkg/seaice to main code
1802      - subroutine FREEZE_SURFACE now limits only surface temperature
1803        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1804        => new output.txt for global_ocean.cs32x15 & global_with_exf
1805      - keep the old version of FREEZE for backward compatibility;
1806        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1807      - corresponding modifs for TAF directives
1808    o added surface flux output variables to TIMEAVE_STATVARS
1809    o time-averaged output for pkg/ptracers
1810    o fix problem with ECCO-related divided adjoint
1811      snapshot file was missing some ad-variables,
1812      but no warning issued by TAF
1813    
1814    checkpoint52a_pre
1815    o some bug fixes for #undef REAL4_IS_SLOW
1816    
1817    checkpoint52 = ecco_c52_e35
1818    o after testing adjoints of checkpoint51u_post
1819    
1820    checkpoint51u_post
1821    o this is the post-merge tag of the ecco-branch
1822      (needs another clean checkout and re-testing)
1823    o various natl_box_adjoint configs and results
1824      but no input fields
1825    o obcs adjoint not yet merged!
1826    o adding ECCO global 1x1 and 2x2 degree configs
1827    o updated/extended some store directives for seaice
1828    o pkg/ecco now containes ecco-specific part of cost function
1829    o top level routines the_main_loop, forward_step
1830      supersede those in model/src/
1831      previous input data.cost now in data.ecco
1832      (new namelist ecco_cost_nml)
1833    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1834    
1835    checkpoint51t_post
1836    o this is the pre-merge tag of the ecco-branch
1837    
1838    checkpoint51s_post
1839    o cleanup: removed various obsolete #define-s
1840    o pkg/grdchk
1841      - renamed 'ph-grd 3' to 'grad-res'
1842      - merged from ecco-branch
1843        (remaining bug fixes for obcs gradient checks)
1844      - additional high-precision output for testreport
1845        (grep for 'precision_grdchk_result')
1846    
1847    checkpoint51r_post
1848    o cleaned up or removed CPP_OPTIONS.h files
1849    o updated results for some of the tests to reflect the new
1850      optfiles (-ieee: -O0 instead of -O3)
1851    
1852    checkpoint51q_post
1853    o cd_code:
1854      - moved cd_scheme.F -> cd_code_scheme.F
1855      - separate read_checkpoint from cd_code_ini_vars.F
1856      - separated cd_code part from write_checkpoint
1857      - updated AD_SOURCE, generated .flow
1858      - added CD_CODE_VARS.h to the_main_loop
1859      - Moving cd_code specific store dir.s to pkg/cd_code
1860    o ctrl package totally restructured
1861      - pack/unpack now optional and decoupled from
1862        xx_/adxx_ I/O
1863      - ctrl_pack/unpack cleaned
1864        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1865      - confined inclusion of AD_CONFIG.h to where necessary.
1866    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1867    
1868    checkpoint51p_post
1869    o create initial cd_code package
1870      - WARNING: the initialization of fields within packages
1871        is broken because INI_FIELDS (where READ_CHECKPOINT is
1872        called) is called *before* PACKAGES_INIT_VARIABLES.
1873        This seems to be backwards since
1874        1) its important to initially zero the entire field including
1875           the "halo" region
1876        2) zeroing needs to be done *before* reading pickup info
1877           and the pickup call might or might not happen in any
1878           particular run
1879      - this needs an overhaul for R2
1880    o cleanup verification/*/code/GMREDI_OPTIONS.h
1881    o cleanup testreport
1882    
1883    checkpoint51o_post
1884    o bringing AD-related verif's up to date with genmake2
1885      - carbon/
1886      - global_ocean.90x40x15/
1887      - hs.94.1x64x5/
1888      - (front_relax/ )
1889    o (more) consistent directory structure for AD-related verif.'s
1890    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1891    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1892    o bug fix in find_alpha.F for MDJWF:
1893      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1894        change rho -> rho-rhoConst
1895      - replace call find_rho to find_rhonum
1896    o initialisation of rFlx extended to full array (required by TAF)
1897      and shifted to thermodynamics
1898    o removed PTRACERS.h in ptracers routine
1899    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1900    o Correcting initialisations for fVerU, fVerV.
1901    o helping TAF to recognize dependency on kUp for
1902      fVerU, fVerV
1903    o Replacing delZ by delR in pkg/ctrl/
1904    checkpoint51o_pre
1905    
1906    o undid all of cp51 pending some cleanups and discussion
1907    o added the [#include "AD_CONFIG.h"] statement to all files that need
1908       it for adjoint/tl #defines
1909     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1910     o removed tools/genmake since it no longer works
1911    
1912    checkpoint51n_post
1913    o modifications to make FREEZE flux visible to pkg/kpp
1914      - moved surfaceTendencyTice from pkg/seaice to main code
1915      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1916      - subroutine FREEZE now limits only surface temperature
1917        (this means new output.txt for global_ocean.90x40x15,
1918         global_ocean.cs32x15, and global_with_exf)
1919    o added surface flux output variables to TIMEAVE_STATVARS
1920    
1921    checkpoint51n_pre
1922    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1923    o added [#include "AD_CONFIG.h"] to all files that use the following
1924      defines:
1925      - ALLOW_ADJOINT_RUN
1926      - ALLOW_TANGENTLINEAR_RUN
1927      - ALLOW_ECCO_OPTIMIZATION
1928    
1929    checkpoint51m_post
1930    o incorporating changes to get TAMC/TAF working in genmake2
1931      - added new TAMC/TAF targets to the Makefile
1932      - various cleanups related to package handling
1933      - these changes should have no impact on the forward model
1934    
1935    checkpoint51l_post
1936    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1937     - faster algorithm for cal_addtime.F
1938     - higher precision arithmetic, where needed
1939     - pkg/exf *startdate variables changed from calendar date to
1940       model integration time
1941    
1942    checkpoint51l_pre
1943    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1944    o enable to apply restoring on S & T only in a latitude band.
1945    o update output (external_forcing_surf modif. change truncation errors)
1946       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1947    
1948    checkpoint51k_post
1949    o change default to: useNHMTerms=.FALSE.
1950     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1951       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1952     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1953        exp1, ideal_2D_oce
1954     - change data file of oceanic exp (leave the results unchanged for now)
1955       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1956    o set gravitySign automatically according to the vertical coordinate used
1957      (and change sign: back to "logical" value: +1 when R increases downward)
1958    o added an include barrier to the default CPP_OPTIONS.h and
1959      removed the #include "PACKAGES_CONFIG.h" from it
1960    o fix a bug in mom_fluxform (from chk51j_post)
1961    
1962    checkpoint51j_post
1963    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1964    o adjusted some flow directives (dynamics, thermodynamics)
1965    o added cubed-sphere case to test cost function
1966    o heckpoint_lev?_directives.h now include
1967      pkg-specific directives, whenever those are enabled.
1968    o Moving pkg-specific flow directives to corresponding pkg
1969      Moving pkg-specific differentiation list to corresponding pkg
1970      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1971      ---> conventions are
1972           - pkg_ad.flow
1973           - pkg_ad_diff.list
1974           - pkg_ad_check_lev?_dir.h
1975    
1976    checkpoint51i_post
1977    o merge of the branch-genmake2
1978      - knowingly breaks the older genmake
1979      - automatic generation of all ALLOW_${PKG_NAME} defines
1980      - new testreport supersedes older testscript
1981    o large number of package inclusion and header cleanups
1982    checkpoint51i_pre
1983    
1984    o new output for adjoin of global ocean vector invariant
1985    o fix for checkpoint of thermodynamic seaice and bulk_force
1986    o Steph gchem various cleanups
1987    
1988    checkpoint 51h_pre
1989    o fixed some single quotes
1990    o modify gchem pkg to be more versatile
1991    o modifications to clean up dic pkg
1992    o add pkg/cfc
1993    
1994    checkpoint51g_post
1995    o provide links for ARPACK and ADM*TLM
1996    o start removing verification/vero/
1997    o update AD-related stuff
1998      (in particular some IF-statements in model/src/ routines)
1999    o adding to verification/global_ocean.90x40x15/ adjoint of
2000      vector invariant setup
2001    
2002    checkpoint51f_post
2003    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2004    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2005      of tracer Green's fucntions for ocean inversion project.
2006    
2007    checkpoint51f_pre
2008    o Added on-the-fly spatial interpolation capability
2009        "USE_EXF_INTERPOLATION" to pkg/exf.
2010      - This is a temporary Cartesian-grid hack until
2011        the super-duper ESMF coupler becomes available.
2012      - See verification/global_with_exf/README for usage example.
2013      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2014        flags and modified pkg/seaice accordingly.
2015    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2016        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2017        non-local transport term.
2018    
2019    checkpoint51e_post
2020    o pkg/mom_vecinv:
2021      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2022      - add time-ave diagnostic of vorticity advection.
2023    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2024    o atmospheric geopotential: - include water vapor effect;
2025                                - use p^kappa in p* scaling.
2026    o land pkg: read initial state from files.
2027    o AIM : add stratospheric drag in the upper level
2028    
2029    checkpoint51d_post
2030    o change function ILNBLNK (=> last non-blank char.) to return zero
2031      (instead of the string length) when the string. char is empty
2032    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2033    o modif's to restore TAMC compatibility
2034      - avoid "_d" constructs in PARAMETER declarations
2035      - avoid interrupting lines by comment lines
2036    o Use cluster local disks for purely local I/O
2037      vs. globally visible disks needed for ctrl stuff
2038      (merged from ecco-branch)
2039      - new active_file_loc... and mdsio_..._loc routines
2040      - affected packages: autodiff, ctrl, grdchk, mdsio
2041    
2042    checkpoint51c_post
2043    o introducing integer flag debugLevel
2044      - debLevZero: suppress all output
2045      - debLevA: standard
2046      - debLevB: equivalent to current debugMode=.TRUE.
2047    o introducing pathname variable mdsioLocalDir for mdsio
2048      that can be specified at runtime
2049      (relevant for cluster I/O to local disk)
2050    `
2051    >>>checkpoint51b_post
2052    adjoint of ptracers
2053    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2054    o extended state in checkpoint_lev?, etc.
2055    o alternative ctrl/cost with tr1 or ptracer
2056    o new comlev1_bibj_ptracers
2057    o new ptracers.flow
2058    o made ptracers_forcing same as external_forcing_s
2059    o added verification for adjoint with ptracers
2060      - adm. grdchk fail so far
2061      - tlm. grdchk OK
2062      - checked tapelev/comlev recomputations: OK
2063    <<<checkpoint51b_pre
2064    
2065    checkpoint51a_post
2066    o added code for biogeochemistry package
2067      - new pkgs: dic, gchem
2068      - new subroutine in ptracers
2069    o modify code for biogeo packages
2070      - in model/src and pkg/ptracers
2071    
2072    checkpoint51
2073    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2074      - autodiff, ctrl, exf, grdchk, seaice
2075      kept separate packages
2076      - cost, ecco, obcs
2077    o updating verification/internal_wave, verification/lab_sea
2078      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2079    
2080    checkpoint50i_post
2081    o Preparing next differentiable checkpoint and sync
2082      of MAIN vs. ecco-branch
2083      - 1st step: this one is differentiable
2084      - 2nd step: next(! not this) checkpoint will have updated packages
2085                  from ecco-branch)
2086    
2087    checkpoint50h_post
2088    o new package "land": provide surface BC for AIM.
2089    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2090    o AIM: use true log-P extrapolation for near surface temp (= as in
2091        F.Molteni paper) ; update aim.5l_cs output.
2092    o New variable in PARM03 for more flexible pickups
2093    o somewhat cleaned package initialisation sequence for
2094      ctrl/ cost/ ecco/ in packages_... routines
2095    
2096    checkpoint50g_post
2097    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2098      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2099      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2100        made the default because of faster convergence than ADI
2101    
2102    checkpoint50f_post
2103    o exf totally restructured
2104      - replaced all exf_set_ routines by one generic exf_set_gen.F
2105        and made sure it's still differentiable
2106      - split exf_getffields.F into new exf_bulkformulae.F
2107      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2108      - updated adjoint/makefile and relevant verif. accordingly
2109    
2110    checkpoint50f_pre
2111     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2112          + change Evap over land. (update aim.5l_cs output)
2113     o added missing .cvsignores and made uniform across expts
2114     o changed configuration of tidal_basin_2d expt
2115     o added pkg/debug functions for tracing code in fatal crashes
2116     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2117     o new fn in pkg/monitor to stop model if solution grows too big
2118     o removed lots of single quotes from comments
2119    
2120    checkpoint50e_post
2121    o make KPP work with PTRACERS
2122     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2123       nearly a copy of kpp_transport_s
2124     - there is no analogue to SurfaceTendencyS, so I have to use
2125       gPtr(of the surface layer) instead
2126    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2127    checkpoint50e_pre
2128    
2129    checkpoint50d_post
2130    o change kpp output from multiple-record state files to single-record state
2131      files analogous to write_state.F
2132    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2133      analogous to the cg2d-related output.
2134    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2135      so that writing to internal file fn (with length 512) fails.
2136    checkpoint50d_pre
2137    
2138    checkpoint50c_post
2139    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2140    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2141    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2142    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2143    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2144    
2145    checkpoint50c_pre
2146    Merging from release1_p13:
2147    o bug fix for pkg/seaice dynamic solver
2148    o Added SEAICE_initialHEFF to pkg/seaice
2149    
2150    checkpoint50b_post
2151    o store u*,v* in gU,V instead of in guNm1,gvNm1
2152    o in order to put the momForcing out of the Adams-Bashforth:
2153      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2154      to timestep.F
2155    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2156    o re-generate output for highly sensitive test-exp:
2157       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2158    
2159    checkpoint50b_pre
2160    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2161    o corrected CPP option mismatch in exf_Bulk... functions for case
2162      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2163    
2164    checkpoint50a_post
2165    o Bug fix for merging between c50 and KPP.
2166      ikey was passed from thermodynamics to kpp_calc via
2167      common block rather than being recomputed in kpp_calc,
2168      in contradiction with new key itdkey.
2169      New key ikppkey created, and tamc.h headers updated.
2170    
2171    checkpoint50
2172    - 2nd step of merge with ecco-branch:
2173      merge changes in ecco-branch back into main trunk
2174    - bug fix in find_alpha
2175    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2176    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2177    - merged some sliced AD support routines
2178    
2179    checkpoint49
2180    merged from ecco-branch:
2181    o exf:
2182      - Enable initialisation of forcing fields to constant
2183        (runtime) values.
2184      - in exf_getffields.F
2185        Reduce i-/j-loop to interior domain, discarding overlaps.
2186        That also fixes wrong TAF-key computations for key_1, key_2
2187        with bulf formulae.
2188      - exf_init.F modify #ifdef for exf_init_evap
2189      - exf_getffieldrec.F, ctrl_getrec.F
2190        The following INT-usages are not safe:
2191          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2192          fldcount = int(fldsecs/fldperiod) + 1
2193        and were modified.
2194    o autodiff: checkpoint_lev...
2195      - updated storing for bulk formulae (some arrays were missing)
2196      - added state for seaice package
2197      - synchronized with main branch
2198    o DIVA:
2199      Modif.s in
2200      - the_main_loop.F
2201      - the_model_main.F
2202      and added cost_final_restore.F cost_final_store.F
2203      o With these changes, it is possible to fully separate
2204        the first forward run to compute the cost function (mdthe_main_loop)
2205        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2206        into separate model executions.
2207        This enables better tuning of DIVA to given queue sizes.
2208      o Loss of cost function value in consecutive DIVA runs is
2209        fixed by storing to 'costfinal' file.
2210      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2211        beginning/end of adjoint integration is accounted for.
2212      The current changes apply to TAF-1.4.26.
2213      TAF has one remaining bug, requiring one manual change
2214      (see MITgcm manual).
2215    o cal: synchronized between MAIN and ecco-branch
2216    
2217    checkpoint48i_post
2218    o Changes to restore differentiability of code w.r.t. previous tag
2219      (mostly adding new routines to make list and replacing
2220      pressure by totPhiHyd).
2221    o Updated and merged grdchk package
2222      - has both ADM and TLM checks
2223      - works for single- and multi-proc.
2224      - output cleaned
2225      - worked successfully for parallel DIVA
2226    o genmake:
2227      - Adding -platform=SP4
2228      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2229    o Modif. for DIVA:
2230      ctrl_unpack should not be called in intermediate DIVA interval.
2231      (similar thing would apply for active files such as
2232      tbar, sbar, psbar, which should not be reinitialised;
2233      only relevant for ecco-branch)
2234    
2235    checkpoint48h_post
2236    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2237    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2238    o Added SEAICE_initialHEFF to pkg/seaice
2239    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2240    
2241    checkpoint48g_post
2242    --- EOS:
2243    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2244      store total Potential in totPhyHyd for diagnostics & EOS.
2245    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2246    --- Pressure/geopotential gradient:
2247    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2248    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2249      ( changes results of global_ocean_pressure )
2250    o NLFS + z-coord.: add eta*Rho' contribution.
2251    o accurate phiHyd when using interface-W at the middle between 2 centers
2252     ( changes results of ideal_2D_oce )
2253    o includes r* 2nd term in potential gradient.
2254    
2255    checkpoint48f_post
2256    Merging from release1_p12:
2257    o Modifications for using pkg/exf with pkg/seaice
2258      - improved description of the various forcing configurations
2259      - added basic radiation bulk formulae to pkg/exf
2260      - units/sign fix for evap computation in exf_getffields.F
2261      - updated verification/global_with_exf/results/output.txt
2262    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2263      (SBO) core products, including oceanic mass, center-of-mass,
2264      angular, and bottom pressure (see pkg/sbo/README.sbo).
2265    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2266      to avoid negative values in shallow regions.
2267      - updated verification/natl_box/results/output.txt
2268      - updated verification/lab_sea/results/output.txt
2269    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2270    o Added useSingleCpuIO option (see PARAMS.h).
2271    o Updated useSingleCpuIO option in mdsio_writefield.F to
2272      work with multi-field files, e.g., for single-file pickup.
2273    o pkg/seaice:
2274      - bug fix in growth.F: QNET for no shortwave case
2275      - added HeffFile for specifying initial sea-ice thickness
2276      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2277    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2278      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2279    o pkg/seaice:
2280      - adjoint-friendly modifications
2281      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2282    
2283    checkpoint48e_post
2284    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2285    o dynamics: change definition of computational domain & adapt mom_fluxform
2286      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2287    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2288        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2289        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2290        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2291        inverted_barometer solid-body.cs-32x32x1
2292      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2293    
2294    checkpoint48d_post
2295    o in preparation for r*:
2296     a) use pre-computed gradient of hydrostatic potential:
2297        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2298     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2299        => affects results of glob_oce_pressure (different truncation error)  
2300      update output.txt of ideal_2D_oce & global_ocean_pressure
2301    
2302    checkpoint48d_pre
2303    o in preparation for r*:
2304      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2305      pass the 2 comp. of the grad. as arguments to momentum S/R.
2306      but for the moment, only used if it does not change the results.
2307    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2308    
2309    checkpoint48c_post
2310    Modifications in treatment of initial flux forcing controls
2311    to avoid extra storing of flux fields.
2312    
2313    checkpoint48c_pre
2314    o Added tidal_basin_2d experiment (currently 1D!)
2315    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2316    
2317    checkpoint48b_post
2318    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2319     (modification to pressure gradient not yet implemented)
2320    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2321      (for U & V) that are used for vertical advection of momentum.
2322    
2323    checkpoint48a_post
2324    o In preparation for r*, use temp. array to compute vertical transport
2325       in flux-form momentum pkg. => change results of few test-exp.
2326      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2327                        lab_sea, natl_box & plume_on_slope
2328    
2329    checkpoint48
2330    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2331    
2332    checkpoint47j_post
2333    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2334    o moved adexch from forward_step to addummy_in_stepping
2335    o added exch in ctrl_map_...
2336    o aveFreq.=0. at end of cost_final to avoid overwrite in
2337      reverse checkpointing loop
2338    o Yet more changes in gmredi:
2339      * adgmredi_calc_tensor
2340        avoiding all recomputation of gmredi_slope_limit
2341      * adgmredi_x/y/rtransport
2342        added flag for excessive storing to avoid recomp. of
2343        u/v/rtans, dTdx/y/z
2344        -> this is not really necessary and very memory-consuming
2345      * adgmredi_slope_psi:
2346        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2347      * gmredi_slope_limit
2348        re-activated full calculation of taperfct for case 'ac02'
2349    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2350    
2351    checkpoint47i_post
2352    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2353    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2354      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2355    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2356    o gmredi: fix few bugs.
2357    
2358    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2359    This will be a good checkpoint to plug into the ecco-branch.
2360    o few modif.'s to get latest version adjointed
2361      (mainly kick out code in ini_linear_phisurf)
2362    o modif's to run adjoint with exactConserv
2363    o case GM_BOLUS_ADVEC should be cleaned
2364      S/R gmredi_slope_psi should be cleaned
2365    o verification/carbon now has exactConserv=.TRUE.
2366    
2367    checkpoint47g_post
2368    o time-average AIM output: becomes independent from statvars time-average
2369      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2370    o After TAF bug fix:
2371      Tested adjoint of gmredi package.
2372      Tests were done with checkpoint47 rather than with latest
2373      checkpoint47f_post since the latter is broken for the adjoint
2374      verification/carbon/ contains both ADM and TLM gradient checks.
2375    Here they are, before they get changed/lost/stolen.
2376    Mostly modif.'s to fix numerical sensitivities.
2377    Gradient checks OK for
2378    - GM_taper_scheme:
2379      * clipping
2380      * ac02
2381      * linear
2382      * glw91
2383      * dm95
2384      * ldd97
2385    - GMREDI_OPTIONS:
2386      * GM_VISBECK_VARIABLE_K
2387      * GM_NON_UNITY_DIAGONAL
2388      * GM_EXTRA_DIAGONAL
2389      * GM_BOLUS_ADVEC
2390    in conjunction with data.gmredi parameters to be checked in
2391    in a few minutes under verification/carbon/code/
2392    
2393    checkpoint47f_post
2394    Merging from release1_p10:
2395    o modifications for using pkg/exf with pkg/seaice
2396      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2397        and SEAICE_EXTERNAL_FLUXES
2398      - pkg/exf CPP options EXF_READ_EVAP and
2399        EXF_NO_BULK_COMPUTATIONS
2400      - usage examples are Experiments 8 and 9 in
2401        verification/lab_sea/README
2402      - verification/lab_sea default experiment now uses
2403        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2404    
2405    checkpoint47e_post
2406    o created a tag prior to creating a branch
2407    
2408    checkpoint47d_post
2409    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2410      at the bottom boundary had an erroneous half slip boundary condition
2411    o added bottom drag and no slip boundary condition capabilities to
2412      oceanic pressure coordinates code
2413    o added new verification experiment global_ocean_pressure, this experiment is
2414      also described in the tutorial section of the manual
2415    checkpoint47d_pre
2416    
2417    checkpoint47c_post
2418    o Added a verification experiment for a global cubed-sphere ocean run
2419      -  verification/global_ocean.cubed32x32x30
2420      -  uses pkg/therm_seaice and pkg/bulk_forcing
2421    
2422    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2423    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2424      when using P-coordinate; only implemented for atmospheric config.
2425    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2426      NOTES: requires option NONLIN_FRSURF to be "#define".
2427    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2428    
2429    checkpoint47b_post
2430    Merging from release1_p9:
2431    o pkg/seaice
2432      - removed GOTO's and added taf directives
2433      - double precision constants to reduce the g77 (Linux)
2434        to F77 (SGI) differences reported in release1_p8
2435    o tools/genmake
2436      - added SGI options
2437    o verification/testscript
2438      - updated to that of checkpoint47a_post
2439    o verification/global_ocean.90x40x15/input/eedata
2440      - modified for SGI f77 compatibility
2441    o verification/lab_sea
2442      - added description of sea-ice model
2443      - added missing matlab routines
2444      - added test of thermodynamics parallelization
2445    
2446    checkpoint47a_post
2447    o new pkg: aim_v23
2448     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2449       for now, keep the same surface forcing as before.
2450     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2451     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2452     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2453    o add diagnostic of surface correction term in monitor output
2454    
2455    o bulk_force and therm_seaice
2456    - Two packages:  bulk_force (Bulk forcing)
2457      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2458    - Earlier integration from Stephaine Dutkiewicz
2459      and Patrick Heimbach.
2460    - Two ifdef statements for compile time,
2461       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2462    
2463    checkpoint47
2464    differentiable version of checkpoint46n_post
2465    o bug fix in quasihydrostaticterms
2466    o * "clean" adjoint code (in terms of extensive recomputations)
2467        can now be obtained for all GMREDI options (i.e. for
2468        - GM_VISBECK_VARIABLE_K
2469        - GM_NON_UNITY_DIAGONAL
2470        - GM_EXTRA_DIAGONAL
2471        - GM_BOLUS_ADVEC )
2472      * However, wrong gradient check problem remains unsolved.
2473      * New CPP options have been introduced for different
2474        tapering schemes
2475    o external_fields_load now part of differentiation list
2476    o pressure needs multiple storing;
2477      would be nice to have store_pressure at beginning or
2478      end of forward_step, e.g. by having phiHyd global (5-dim.)
2479      (NB: pressure is needed for certain cases in find_rho,
2480      which is also invoked through convective_adjustment).
2481    o recomputations in find_rho for cases
2482     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2483    o #define ATMOSPHERIC_LOADING should be differentiable
2484    o ini_forcing shifted to begining of initialise_varia
2485    o Incorporating QNVS line search routines into MITgcm
2486      (this is separate code, and therefore not under pkg)
2487      lsopt/, optim/
2488    o Updated verification/carbon/
2489      - #define GM_VISBECK_VARIABLE_K
2490      - GM_taper_scheme    = 'ldd97'    
2491    
2492    checkpoint46n_post
2493    Merging from release1_p8:
2494    o verification/natl_box:
2495      updating new external_fields_load routine
2496    o New package: pkg/seaice
2497      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2498      The sea-ice code is based on Hibler (1979-1980).
2499      Two sea-ice dynamic solvers, ADI and LSR, are included.
2500      In addition to computing prognostic sea-ice variables and diagnosing
2501      the forcing/external data fields that drive the ocean model,
2502      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2503      The implied surface heat flux is then stored in variable
2504      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2505      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2506      non-local transport term.  Because this call precedes model
2507      thermodynamics, temperature under sea-ice may not be "exactly" at
2508      the freezing point by the time theta is dumped or time-averaged.
2509      N.B.: fairly large differences in accuracy occur across
2510            different platforms/compilers; comparison between
2511            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2512            generated output gives:
2513       T           S           U           V
2514      C D M    c        m  s        m  s        m  s        m  s
2515      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2516      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2517      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2518    
2519      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2520    o GAD:
2521      - generated new common blocks to account for call of
2522        same gad routines with differing traceridentities
2523        (needed to modify tracerIdentity indices in GAD.h)
2524      - generated separate common blocks for case useCubedSphereExchange
2525        (Department of Futurology)
2526      - parameter lists to gmredi_?transport: added tracerIdentity
2527      - added new key indices to tamc.h
2528    o external_fields_load:
2529      - added this routine to TAF list
2530      - needed to make some common blocks global and additional storing
2531        along the same lines as exf package (checkpoint_lev?_directives.h)
2532    o exf:
2533      updated external forcing package
2534      - bug fixes carried over from ecco-branch
2535        (missing OBCS_OPTIONS.h in two routines)
2536      - enable easy to use "no forcing".
2537      - added exf I/O for atmospheric loading
2538      - added exf I/O for runoff data
2539      - transfered scaling between exf <-> MITgcm to exf namelist
2540    o Adding new verification experiment global_with_exf.
2541      This verification experiment is almost identical to the
2542      global_ocean.90x40x15 experiment, except that it uses
2543      the exf (and cal) package instead of the
2544      external_fields_load routine (cf README file).
2545    
2546    checkpoint46m_post
2547    o modified testscript to return -- when there are no lines of "%MON" output
2548    o added new flag "quasiHydrostatic" for QH mode
2549      and new routine quasihydrostaticterms()
2550    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2551      New routine: mom_u_coriolis_nh()
2552    o fixed sign of non-hydrostatic metric terms in u and v equations.
2553      Depend on correct sign of gravitySign.
2554    o added work.pc* to .cvsignore in aim directories using ifc
2555    o introduced flag for controllin non-hydrostatic metric terms
2556    o removed gravitySign from PARM04
2557    o switched to g77/ifc from pgf77 in aim experiments
2558    
2559    checkpoint46l_post
2560    o made convective adjustment work with pressure coordinates:
2561     - changed the direction of k-loop in convective_adjustment.F for the
2562       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
2563     - adjusted the reference pressure k-index in convective_adjustment.F
2564     - adjusted the convection condition in convect.F (in analogy to
2565       calc_ivdc.F)
2566     - convective_adjustment no longer computes anything on the halos
2567     - removed the warnings about negative salinity from find_rho.F and
2568       find_alpha.F; instead the new routine look_for_neg_salinity, called
2569       at the beginning of find_rho, find_alpha, and find_beta, does a
2570       check of the entire slice, if CPP-option
2571       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
2572    checkpoint46l_pre
2573    
2574    checkpoint46k_post
2575    o fixed the verification/global_ocean.90x40x15 experiment:
2576     - new bathymetry (the world according to A., JMC, and M.)
2577     - new initial fields and forcing fields (*.bin files)
2578     - new POLY3.COEFFS (for the next release one should switch to a full
2579       equation of state: JMD95P or MDJWF)
2580     - fixed several errors and redundancies in the data file
2581     - experiment uses looped cells
2582     - added matlab directory with diagnostic scripts for plotting of output
2583    
2584    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
2585     - read AIM physics parameters from a file (data.aimphys)
2586     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
2587    
2588    checkpoint46j_post
2589    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
2590    o move wVel computation at the end of the time step, in S/R integr_continuity
2591    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
2592    o update timeave pkg for wVel diagnostic.
2593    checkpoint46j_pre
2594    
2595    checkpoint46i_post
2596    o Clean up AIM package (and keep the results unchanged):
2597      include CPP_OPTION and use IMPLICT NONE in all routines ;
2598      declare all the variables _RL ; use _d 0 for all numerical constants.
2599      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
2600    
2601    checkpoint46h_post
2602    o cleaned up the use of rhoNil and rhoConst.
2603      - rhoNil should only appear in the LINEAR equation of state, everywhere
2604        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
2605        and the dynamical equations are all divided by rhoConst
2606    o introduced new parameter rhoConstFresh, a reference density of fresh
2607      water, to remove the fresh water flux's dependence on rhoNil. The default
2608      value is 999.8 kg/m^3
2609    o cleanup up external_forcing.F and external_forcing_surf.F
2610      - can now be used by both OCEANIC and OCEANICP
2611    checkpoint46h_pre
2612    
2613     Added code to convert surface volume flux (fresh water) into
2614     a mass flux when using P coordinates in the ocean (OCEANICP).
2615     Note: It assumes you have set rho0=rhoConst=density of fresh water.
2616    
2617    checkpoint46g_post
2618    o Include a new diagnostic variable phiHydLow for the ocean model
2619      - in z-coordinates, it is the bottom pressure anomaly
2620      - in p-coordinates, it is the sea surface elevation
2621      - in both cases, these variable have global drift, reflecting the mass
2622        drift in z-coordinates and the volume drift in p-coordinates
2623      - included time averaging for phiHydLow, be aware of the drift!
2624    o depth-dependent computation of Bo_surf for pressure coordinates
2625      in the ocean (buoyancyRelation='OCEANICP')
2626      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
2627        Theta, Salinity, and Pressure in the parameter list. This routine is
2628        presently contained in find_rho.F. This routine does not give the
2629        correct density for 'POLY3', which would be a z-dependent reference
2630        density.
2631    o cleaned up find_rho
2632      - removed obsolete 'eqn' from the parameter list.
2633    o added two new verification experiments: gop and goz
2634      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
2635    checkpoint46g_pre
2636    
2637    checkpoint46f_post
2638    o Enable tangent linear (forward mode) gradient checks:
2639      - extended active file handling to g_... files
2640      - added TANGENT_SIMULATION to theSimulationMode
2641      - extended grdchk package accordingly
2642    o added tangent linear setup in verification/carbon/code_ftl
2643    o added adjoint setup in verification/front_relax/code_ad
2644    
2645    checkpoint46e_post
2646    o Added new equation of state -> MDJWF
2647      - EOS of McDougall et al., 2002, JAOT, submitted
2648      - caveat: the equation of state is only valid for a smaller (more
2649        realistic?) range of values than JMD95P/Z and UNESCO
2650      - added masks to the calculation of pressure in store_pressure
2651      - added more check values for density in check_eos (ini_eos.F), some of
2652        the old check values are out of the range of the MDJWF-eos, so don't
2653        expect perfect matches for those
2654    checkpoint46e_pre
2655    
2656    checkpoint46d_post
2657    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
2658      'OCEANICP', also initialised field pressure correctly in ini_eos in the
2659      case of pressure coordinates. eosType='JMD95Z' in
2660      combination with buoyancyRelation='OCEANICP' now causes an error.
2661    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2662      in find_alpha/beta.
2663    checkpoint46d_pre
2664    
2665    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2666      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
2667    
2668    checkpoint46c_post
2669    o Changes necessary for ocean in p-coordinates
2670     -  Added new buoyancy relation = 'OCEANICP'
2671     -  Added new parameters = gravitySign (this used to be contained inside
2672        the factor dRdZ which I added when we first switched to R coordinates).
2673     X GM/Redi is not compatible (yet)
2674     X bottom drag and no-slip need to be debugged.
2675    checkpoint46c_pre
2676    
2677    checkpoint46b_post
2678    o Added new equation of state -> JMD95Z and JMD95P
2679      - EOS of Jackett and McDougall, 1995, JAOT
2680      - moved all EOS parameters into EOS.h
2681      - new routines ini_eos.F, store_pressure.F
2682    o Added UNESCO EOS, but not recommended because it requires
2683      in-situ temperature (see JMD95)
2684    o Modified formatting for knudsen2.f in utils/knudsen2 and added
2685      unesco.f to be used with POLY3
2686    checkpoint46b_pre
2687    
2688    checkpoint46a_post
2689    o Added (atmospheric) pressure loading
2690      - new field in FFIELDS.h, etc...
2691      - new cpp flag ATMOSPHERIC_LOADING
2692    o Changed hFacC to _hFacC in calc_phi_hyd.F
2693    o Added SHORTWAVE_HEATING to some files for consistency
2694    checkpoint46a_pre
2695    
2696    checkpoint46
2697    further merges from release1_p5
2698    o new ctrl package
2699      - adopted from ECCO environment to enable optimization
2700      - added Eliassen Palm fluxes to controls
2701    o added Eliassen Palm flux controls to gradient check package
2702    o cost package
2703      - Compatible with new ctrl package
2704      - added Eliassen Palm cost hooks
2705      - modif's of existing cost functions
2706    o Adjoint-related bug fixes in kpp:
2707      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
2708      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
2709    o autodiff package
2710      - flow directives:
2711        + new for S/R do_the_model_io
2712        + enhanced for S/R checkpoint
2713        + new gmredi.flow
2714      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
2715        disable adcommon.h/g_common.h by default.
2716      - fixed problem for adjoint of global_max
2717    o modified verification/carbon/
2718    o New setup for adjoint of global_ocean
2719    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
2720    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
2721    o incorporated hooks for sponge layer code (external_forcing.F)
2722    
2723    checkpoint45d_post
2724    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
2725    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
2726      (affects plume_on_slope "cg2d" output)
2727    o add new parameter deltaTfreesurf for free-surface time stepping
2728    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
2729  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
2730  o change phiMin in exp1 (to agree with documentation)  o change phiMin in exp1 (to agree with documentation)
2731  o add new flags:  o add new flags:

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