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revision 1.70 by jmc, Sat Apr 6 01:36:25 2002 UTC revision 1.776 by jmc, Tue Mar 13 14:06:22 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 p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
8      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
9      (and replace horiVertRatio in NH code).
10      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
11                         and tutorial_plume_on_slope (sensitive to truncation)
12    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
13      directly to drive seaice model (C-grid only)
14    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
15     - reintroduce computation of wind from stress,
16     - compute tau (in exf_bulkformulae.F) from windstress averaged to
17       mass points to avoid tau = 0
18     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
19    o rdmnc.m: make it work with "global" files created with gluemnc
20    o rdmnc.m : some improvements in dealing with singleton dimension
21      (tested on all testreport mnc output files).
22    o genmake2: disable pkg/profiles if netcdf test fails.
23    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
24    o move call to cal_readparms up to make calendar parameters/variable available
25      to all packages
26    
27    checkpoint58v_post
28    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
29      useDynP_inEos_Zc tested.
30    o pkg/exf: changes to properly interpolate/mask/scale initial fields
31    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
32      and portions thereof.  See read_cs.txt for description and examples.
33    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
34      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
35      following the great-circle arc between those 2 points.
36    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
37      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
38    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
39     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
40     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
41     - still needs work (not working with some options ; efficiency to improve)
42       and serious testing.
43     - use this scheme for temperature & salinity in 2 advection test exp.:
44       advect_xy & advect_xz, respectively.
45    
46    checkpoint58u_post
47    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
48    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
49    o testreport: add option "-skipdir" to skip some test.
50    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
51      momentum calculation.
52    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
53    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
54      remove checkpoint.F and the_correction_step.F (no longer used);
55      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
56    o add option (linFSConserveTr) to correct for tracer source/sink due to
57      Linear Free surface
58    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
59    o pkg/thsice: fix reading mnc-pickups
60    
61    checkpoint58t_post
62    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
63    o pkg/mdsio:
64     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
65       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
66       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
67     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
68     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
69       either MDS_READ_FIELD or MDS_WRITE_FIELD )
70     - new S/R (to replace MDSWRITEMETA), which allows to write more
71       informations (variable names, time ...) to meta files.
72     - modify rdmds.m to give back the meta file content.
73    o pkg/diagnostics: change vertical interpolation to be safer, and more
74       flexible (define p-levels to interpolate to in data.diagnostics);
75      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
76       diagnostic pointer.
77    o pkg/seaice: more cleaning up of seaice_growth, added many comments
78    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
79    o fix multi-category seaice:
80     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
81       SEAICE_MULTICATEGORY
82     - fix short wave heat flux
83    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
84       and allow to use EVP solver. Change forward lab_sea: test both EVP
85       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
86    o Initial check-in of lab_sea adjoint
87      (very similar to natl_box_adjoint/code_seaice)
88      * used C-grid and EVP solver
89      * used KPP, GM/Redi
90      * uses inAdExact=.TRUE.
91      * gradient checks fail for both ADM and TLM
92        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
93        f.d. gradients actually seem more problematic than ADM, TLM gradients;
94        issue is related to forward mismatch between g77 an ifort
95    o pkg/seaice: overhaul of thermodynamics
96     - growth.F and groatb.F are replaced by new routine seaice_growth.F
97     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
98     - move a few global fields out of SEAICE.h into seaice_growth.F and
99       make them 2D (FICE/QNETO/ ...)
100     - remove FO (it is the same as QNETO)
101     - introduce a few local fields to avoid modifying external fields such
102       as atemp, etc.
103    
104    checkpoint58s_post
105    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
106      changed exf_set_gen.F so that
107        genperiod=0 means input file is one time-constant field and
108        genperiod=-12 means input file contains 12 monthly means
109    o CG2D: use pre-computed solver main-diagonal (stored in common block);
110      this affects truncation error ; generate new output file for exp. which
111      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
112        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
113        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
114        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
115        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
116        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
117    o start implementation of deep-atmosphere and anelastic formulation
118    o verification: remove 2nd copy of input files and use script "prepare_run"
119      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
120    o mom_common/vecinv/fluxform: fix a few initialisation isssues
121    o profiles: fix for multithreaded case
122    
123    o diagnostics: rename few diags:
124      s/'PRESSURE'/'RCENTER '/g
125      s/'TICE    '/'oceFreez'/g
126      s/'TAUX    '/'oceTAUX '/g
127      s/'TAUY    '/'oceTAUY '/g
128      s/'SWFLUX  '/'oceQsw  '/g
129      s/DIFx/DFxE/g
130      s/DIFy/DFyE/g
131      and add few ocean-forcing diagnostics:
132      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
133    o modifications to pkg/seaice/growth.F and budget.F, which change results of
134      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
135      as actual snow thickness.  It now refers everywhere to effective snow
136      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
137    
138    checkpoint58r_post
139    o modifications to pkg/seaice/growth.F, which change results of
140      lab_sea experiment: fixes pertain to melting snow over open water, to
141      masking EVAP under sea ice, and to using the correct AREA variable for
142      computations of EVAP, PRECIP, HSNOW, and GHEFF
143    o add ability to read bathy, salt, and theta using MNC (off by def)
144    o add flooding algorithm and advection of HSNOW for pkg/seaice;
145      both are turned off by default and do no change any results
146    o seaice advection with pkg/thsice: a step toward the use of non-linear
147      advection scheme, but #ifdef or commented out for now (requires more EXCH).
148    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
149      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
150      in natl_box (affects results @ truncation level: update output.txt)
151    o multi-threading and IO:
152      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
153      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
154        (needed to work with SingleCpuIO): tested in all verif. exp.
155    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
156      affects the results (but none of the verification test uses this scheme).
157    o Adding some pkg/diagnostics capability to pkg/seaice
158      (will certainly be subject to changes)
159    o ctrl: adding new control variables:
160      lwflux, lwdown, evap, snowprecip, apressure, runoff
161    
162    checkpoint58q_post
163    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
164      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
165      high_res_cube configuration by 4% on Columbia.
166    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
167      add (in global_with_exf/code) a version of EXF_INTERP_READ without
168      dynamical allocation (seems to work in multi-threaded).
169    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
170      single CPU io) so that TAF does not have to see EESUPPORT.h
171    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
172    
173    checkpoint58p_post
174    o obcs: stop if obcs is used with useCDscheme = .true.
175    o shelfice:
176     - fix a sign error so that no slip at shelfice interface works
177     - remove stop for combination non-hydrostatic code and shelfice. That does
178       not mean, that the results are correct, but at least they are numerically
179       stable
180    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
181    o added adjoint exch routined for all exch*3d* routines
182      and updated flow directives
183    
184    checkpoint58o_post
185    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
186      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
187    o change controling S/R for writing pickup file (new S/R do_write_pickup)
188      and clean-up reading/writing of pickup files.
189    o fix local version of read/write pickup (NH part) in rotating_tank/code
190    o simplify EXCH interface:
191     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
192     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
193    o added the regrid package
194    o shelfice:
195     - add a simple boundary layer scheme to reduce noise
196     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
197    
198    checkpoint58n_post
199    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
200       local variable (not in common block).
201    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
202      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
203      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
204        to work with SingleCpuIO.
205    o add "_d 0" to real constant of pkg/cfc subroutines ;
206       update exp. cfc_exemple & tutorial_cfc_offline output files.
207    o multi-threading and IO:
208      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
209        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
210      - barrier before and after reading.
211      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
212      - avoid using MDS_WRITELOCAL for LAND pkg output.
213      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
214        common-block variables ; Allows multi-threading with master-thread IO.
215    o change default MAX_NO_THREADS from 32 to 4 ;
216      and stop cleanly when MAX_NO_THREADS is too small.
217    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
218    
219    checkpoint58m_post
220    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
221       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
222    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
223       keep global_ocean.90x40x15 (for AD testing) with former secondary test
224       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
225    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
226        add MITgcm_tutorials (= code + all the tutorials)
227    o ecco, option to compute cost for total ssh (mean+anom)
228    o consistent with addition of ptracer and ssh in pkg/profiles
229    o profiles: adding ptracer and ssh
230    o testreport: change multi-test output-file name
231      (from output.txt.{name} to output.{name}.txt)
232    o profiles: now ok for mutli-tiles case
233    o seaice: add 4 parameters for different advection schemes for area,
234      (effective) seaice thickness, enthalphy, and snow height. Their default
235      is the standard parameter SEAICEadvScheme
236    o calc_gw:
237     - add cosFacU in zonal viscous flux (harmonic.visc.).
238     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
239       of tutorial_plume_on_slope.
240    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
241    o calc_gw: true flux-form, account for horizontal grid spacing.
242      update rotating_tank results, but not plume_on_slope (affected at
243      truncation level, 11 digits).
244    
245    checkpoint58l_post
246    o calc_gw:
247     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
248     - remove side-drag for now (need to fix it); update plume_on_slope results.
249     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
250    o commit code to make SST/SSS weights spatially variable
251      (based on either variable in-situ or variable initial T/S weights)
252    o pkg/ecco:
253      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
254        now based on horizontally varying weights wthetaLev, wsaltLev
255      * cost_averagesflags now returns year indices in addition to day, month
256      * sflux balance is performed on annual basis
257        (sflxumm, sfluxmm2, bal_sfluxmm)
258      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
259        including separate counting and multipliers
260    o pkg/rbcs
261      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
262    
263    checkpoint58k_post
264    o testreport:
265     - always build in dir. "build" (if not there, mkdir build instead of building
266       & running in input)
267     - run in dir run (if it exists), in build otherwise.
268     - call prepare_run (if input/prepare_run exists)
269     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
270    o pkg/exf modifications to interpolation and rotation routines for more
271       reasonable treatment of North Pole singularity: for tracers North Pole
272       value is set to northernmost zonal-mean value, for zonal velocity it is
273       set to zero, and for meridional velocity it is set to northernmost value.
274    o pkg/exf/exf_check_range.F
275     - add tile index to diagnostics and move stop statement to the very
276       end of the routine.
277    o pkg/diagnostics: (diagnostics_main_init.F)
278      define title of isomorphic variables according to the current config.
279    o pkg/thsice with pkg/seaice dynamics:
280    - fix domain of computation (interior only, required for exf) and do exchanges
281    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
282    o towards a standard way of dealing with multi-threading in MONITOR
283      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
284    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
285       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
286    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
287    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
288    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
289       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
290    o tracer advection:
291     - clean-up and simplify calc_common_factors.F
292     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
293       advection subroutine (but still not used within DST advection S/R)
294    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
295    
296    checkpoint58j_post
297    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
298      from file (collects calls previously in FORWARD_STEP)
299    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
300    o adjoint store dir. adjusted accordingly
301    o genmake2
302      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
303    
304    checkpoint58i_post
305    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
306      on wind stress (SEAICEstressFactor defaults to 1.)
307    o Total number of Timers is finite (<=40): comment out 2 non-essential one
308      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
309    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
310      on CS-grid: no longer loosing mass.
311    o exf & curvilinear-grid: no longer modify longitude xC & xG.
312    o pkg/ggl90: fix sloppy output and fix a bug
313    o pkg/seaice: added SEAICEuseEVPpickup parameter
314      - Set to false in order to start EVP solver with
315        non-EVP pickup files when using SEAICEuseEVP
316      - fix sign error in diffusion in seaice_calc_rhs
317    
318    checkpoint58h_post
319    * Modifications for bottom topography control
320      o replace hFacC by _hFacC at various places
321      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
322      o add non-self-adjoint cg2d_nsa
323      o update autodiff support routines
324      o re-initialise hfac after ctrl_depth_ini
325      o works for 5x5 box, doesnt work for global_ocean.90x40x15
326    * Adding verification for 5x5 box (4-layer) bottom topography control
327    
328    checkpoint58g_post
329    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
330       used for mean seasonal cycle, mean diurnal cycle); add an example
331       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
332    o pkg/ggl90:
333      - add parameter (minimum surface kinetic energy)
334      - fix bug (avoiding division by zero)
335    o couple pkg/thsice to pkg/seaice:
336      - modify advection in seaice to accomodate new scalar fields to be advected
337      - only muliDimAdection scheme work with seaice/thsice
338      - mapping of thsice-variables to seaice-variables, back and forth
339      - does not break the verification experiments, but does not give the
340        desired results either
341    o pkg/seaice
342      - make (default) second order advection a bit less confusing?
343    
344    checkpoint58f_post
345    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
346      to pkg/seaice):
347      - new routines thsice_map_exf and thsice_get_exf provide the interface
348      - add an additional formal parameter to thsice_solve4temp
349    o pkg/exf:
350      - add new fields wspeed, snowprecip (to be able to couple to thsice)
351      - correct Stefan-Boltzmann constant
352      - new parameter for longwave surface emittance
353      - separate some stuff from exf_bulkformulae into new routines  
354        exf_radiation, exf_wind
355      - add new parameters and constants: longwave emissivity for ocean, ice
356        and snow, evaporation parameters over ice
357      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
358        either wind from stress or stress from wind
359    o pkg/thSIce:
360    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
361    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
362       and THSICE_CALC_THICKN
363    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
364    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
365      to make debugging easier.
366    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
367    o pkg/bulk_force:
368      - clean-up comments and parameters ;
369      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
370    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
371      generate new output for test-experiment: aim.5l_cs.thSI
372    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
373      testreport accordingly
374    
375    checkpoint58e_post
376    o SEAICE_CGRID adjoint done
377    o R_STAR adjoint implemented.
378      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
379      * need to sort out init. of h0facc, etc.
380    o Make pkg/profile fully independent of ecco,cost, etc. stuff
381      to be able to use it in pure forward.
382    
383    checkpoint58d_post
384    o upgrade simple test-experiment to tutorial example:
385     step.1: duplicate the experiment and (step.2) will remove the old copy.
386      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
387      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
388      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
389      tutorial_global_oce_biogeo    <- copy of dic_example
390      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
391      tutorial_plume_on_slope       <- copy of plume_on_slope
392      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
393      tutorial_global_oce_optim     <- empty for now (David ?)
394      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
395     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
396    o correct a sign problem in cost_scat.F
397    o obcs and ptracers: fix boundary conditions for advections schemes
398      with larger stencil
399    o thsice adjoint: start
400    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
401      completeness
402    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
403      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
404    o ptracers adjoint:
405      * avoid extensive recomputatations
406      * fix missing re-init. of gptr (missed by TAF)
407    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
408      me to turn off the excessive output to STDOUT that this package produces
409    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
410      and add those terms in Vector-Invariant formulation.
411    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
412      if the control period (xx_hfluxperiod etc) is 0
413    o in profiles pkg, clean routines and fix details
414    o in ecco pkg, reading ssh data:
415      fix problem in case the model does not start at iter0=0
416    o fix mnc-pickup/restart for ptracers
417    o new package prifiles:
418      code to compute profile-based cost by Gael Forget
419      (modifs in ecco, ctrl, autodiff)
420    o Benign bug fix in initialization (spotted by M. Mazloff) of
421      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
422    
423    checkpoint58c_post
424    o adjoint: finish NLFS adjoint and provide reference output in
425      verification/global_ocean.90x40x15/results_ad_nlfs
426    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
427      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
428      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
429      with SEAICE_CGRID defined.
430    o move calendarDumps from "data" to "data.cal" and clean-up the code
431      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
432    o add useEXF & useCAL flags (for now, set in hard-coded way)
433    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
434      (were missing in NH mode, and wrong in quasihydrostatic mode).
435      waiting for Chris updated version of calc_gw to add those CALLs.
436    o fix bug in quasihydrostatic S/R ;
437      add a test for this option: global_ocean.90x40x15.qshyd
438    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
439      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
440    o add on/off flag useOffLine for package OFFLINE
441    o seaice:
442      - modify advection so that it works also on the C-grid
443      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
444        problem in multi-tile runs with C-grid
445      - add flags for clipping ice velocities and/or masking solver forcing
446      - fix drag (ocean on ice) formulation and a bug that caused noise in the
447        C-grid solver
448      - added a few comments to seaice_diffusion.F
449      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
450        are now exclusive)
451      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
452        required re-ordering the code a little:
453       + make DAIRN global variable (defined in SEAICE)
454       + move computation of the viscosities eta and zeta into a new separate
455         routine (because I need to recompute them in seaice_ocean_stress.F)
456    
457    checkpoint58b_post
458    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
459      update output.txt of exp. aim.5l_cs.thSI
460    o various mnc cleanups and improvements:
461      + shrink lookup tables by factor of ~4
462      + better error reporting when running out of lookup space
463      + able to handle longer path/file names (up to 500 chars)
464    o adjoint:
465      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
466      - TBD: "hidden" mom_vecinv recomp. in dynamics
467    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
468     (allow to differentiate between forcing components using new integer flags:
469      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
470     and add new flag to put Dissipation tendency out of Adams-Bashforth.
471    o ecco
472      - enable trend removal from SSH anomaly obs.
473    o adjoint
474      - a fix for PmEpR when #undef EXACT_CONSERV
475      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
476      - try to fix "hidden" recomp. in forward_step for NLFS
477        (NLFS seems broken sometimes after I checked it in)
478    o seaice:
479     - add c-grid version of the dynamic solver:
480       + three new routines that are the c-grid substitute lsr, dynsolver
481         and ostres
482       + put a few fields that were local to dynsolver into global common
483         blocks, so that I can move the computation of stresses etc into
484         seaice_lsr (saves coding but may break the adjoint).
485     - replace more hardwired parameters by runtime parameters
486     - add ice masks that mask the rhs of the implicit solvers where there
487       is no ice (commented out in seaice_dynsolver, because i am not sure
488       if this works properly), eventually this should replace the clipping
489       of ice velocities in seaice_dynsolver to +/-40cm/s.
490    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
491      include it only where its needed
492    o move balancing of fluxes before the call of external_forcing_surf
493    o seaice:
494      - correct units of turning angles (now they are really in degrees)
495      - move computation of GWATX/Y out of main routine into dynsolver
496      - initialize GWATX/Y in seaice_init
497    o Apply mask on Fresh-Water flux (needed for SSH forcing).
498      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
499    o seaice: add runtime flags for turning angles (default to zero)
500    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
501      and trend from exf forcing and ctrl control adjustments
502    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
503      (since checkpoint57x_post)
504    o change the default rotation period to 86164.s = the Earth rotation
505    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
506      and based on a reference stratification. Tested within hs94.cs-32x32x5.
507    o seaice advection: add code for choosing between the default (2nd order
508      central differences) and multiDim advection schemes provided by
509      pkg/generic_advdiff
510    o seaice:
511      - removed all references to SEAICE_GRID.h fields from
512        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
513        (cubed-sphere configuration will change a little)
514      - grid computations in seaice_init are obsolete now.
515      - cleaned up code a little so that is easier to read (hopefully).
516      - added new (better?) discretizations of default advection and diffusion
517        (turn on with SEAICEuseFluxForm)
518      - replace 1 in 3d global fields by kSurface in growth.F
519      
520    checkpoint58a_post
521    o seaice:
522      - bug fix in advect.F
523    o shelfice:
524      - separate shelfice load anomaly from pload (breaks with time
525        dependent forcing), => introduce constant field shelficeLoadAnomaly.
526        Its default is 0., but it may be computed more cleverly from (unknown)
527        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
528        done offline. A good approximation of the pressure load anomaly is
529        necessary to avoid large initial adjustment processes underneath
530        deep-reaching shelfice.
531      - small fix in ISOMIP shelfice_thermodynamics
532      - add more sophisticated thermodynamics of Hellmer (1989), this is
533        now the default
534      - give a few constants more intuitive names
535    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
536      if bulk formulae are used in long integration (especially EmPmR). Turn
537      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
538      if balancePrintMean, the imbalance that is substracted is printed to
539      STDOUT.
540    o fix bug (typo) in obcs_apply_eta.F
541    o add a new package shelfice which enables us to model the circulation
542      underneath shelf-ice with draughts of hundreds of meters.
543     - works
544     - to do: + include improved thermodynamics
545              + check whether kSurfC (from model/inc/SURFACE.h) can be used
546                instead of new field kTopC
547              + can we use topoFile, Ro_surf and existing code in ini_depth.F
548                instead of new field R_shelfIce and new code in ini_depth.F
549                and ini_mask_etc.F?
550              + adjust vertical mixing schemes?
551    o seaice pkg:
552     - add a cpp-flag to include a simple formula for a salinity dependent
553       freezing point of sea water at the surface
554     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
555       meridional stresses are now different (and hopefully correct)
556    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
557       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
558       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
559    o pkg/diagnostics: add options and parameters for regional-statistics
560       diagnostics ; define regions by reading a region-mask from a file
561       (might add other options later)
562    o pkg/bulk_force:
563     - add option and parameters to use AIM surface-flux formulae.
564     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
565       others forcing fields (defined in PARM05, parameter file "data") are loaded
566       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
567     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
568     - use the right EXCH call for uwind,vwind (to work on CS-grid).
569     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
570       and parameters (note: calcWindStress replaces .NOT.readwindstress).
571     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
572    
573    checkpoint58
574    o add "--embed-source" option to genmake2 which, when the supporting
575      tools can be compiled (as determined by genmake2) will turn on the
576      embed_files package which then embeds the entire MITgcm source code
577      (*.[fFhc] + Makefile) used for the build within the executable
578      - requested by CNH but off by default
579      - adds a paltry <9MB to the mitgcmuv executable in most cases
580      - only writes the output when useEMBEDSRC in eedata is true
581    o clean up 3-dim. relaxation codes:
582      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
583      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
584      * Thanks to Tom Haine for testing!
585    
586    checkpoint57z_post
587    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
588      affects output (@ truncation level) of exp. plume_on_slope ; updated.
589    o fix the pickup behavior for obcs in combination with ptracers
590    o fix a bug in ptracers_external_fields_load
591    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
592      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
593    o transfered surface NH pressure to eta field (if exactConserv).
594    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
595         and update lab_sea output.txt file.
596    o completing 3-dim. relaxation code: additional term
597         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
598      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
599      * At compile time, in "EXF_OPTIONS.h" set
600          #define  ALLOW_CLIMTEMP_RELAXATION
601          #define  ALLOW_CLIMSALT_RELAXATION
602      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
603          tauThetaClimRelax3Dim = 15552000.0,
604          tauSaltClimRelax3Dim  = 15552000.0,
605      * 3 cases:
606          1) Use a constant-in-time 3-dim. field
607          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
608          3) Real-time relax. to time-evolving prescribed field
609    o Adding Laplacian-type smoothness constraint on
610      initial and boundary (forcing) controls (ic, bc)
611      * enable at compile-time via
612        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
613      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
614      * Absolute scale somewhat unclear so far
615      * no area weighting was included since no other cost term does so far
616    
617    checkpoint57y_post
618    First step for a NLFS adjoint
619    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
620    o new init. routines for calc_r_star, calc_surf_dr
621    o still need to deal with ini_masks_etc
622    o testreport seemed happy
623    checkpoint57y_pre
624    
625    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
626    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
627    o add new offset feature to offline pkg (plus minor cleanup)
628    o cfc fixes for final year of integration
629    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
630      be in GCHEM_OPTIONS).
631    
632    checkpoint57x_post
633    o fix testreport Pb in multiple test experiment.
634    o cleanup our namelist syntax in verification:
635      - make it more F95 standards compliant (some work still needed)
636      - allows the vast majority of our tests to work with gfortran
637    o Non-Hydrostatic:
638     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
639     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
640    o Allow to apply AB on T,S rather than on AB(gT,gS):
641     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
642     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
643       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
644     - need a "clever" read_pickup to restart from the other AB formulation
645    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
646    o remove some unused variables (reduces number of compiler warnings)
647    o adjoint
648      * Disable useVariableViscosity for adjoint for time being
649        (there are a number of extensive recomputations)
650      * Initialize certain variables needed for adjoint
651    
652    checkpoint57w_post
653    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
654                 fix the singleCpuIO RS version of MDSWRITEFIELD
655       and add a WARNING if using globalFiles=T with multi-processors.
656    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
657      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
658    o tracer advection scheme:
659      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
660       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
661       was not very convenient).
662      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
663       (further tests needed for the implicit DST & Flux-Limiter schemes).
664    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
665      and sRef for convenience, handy, when you want to initialize
666      ptracers in a large domain with a constant non-zero value. Also,
667      untangle ptracers_init.F a little.
668    
669    checkpoint57v_post
670    o change dome exp. to use variable viscosity in side-drag terms.
671    o remove all the files from the cfc_offline test since they are now
672      incorporated into tutorial_cfc_offline which has been producing
673      identical results for a few days of testing
674    o add new parameter: sideDragFactor to enable half-slip-side BC
675      and change side-drag S/R to use viscosity from mom_calc_visc
676      (can switch back by setting sideDragFactor=0.); affects results at
677      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
678       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
679    o vorticity & strain are now computed without masking, to account for
680      no-slip-side BC in variable viscosity calculation ; mask is applied
681      anyway later on, before computing advection/coriolis terms.
682    o modify exp4 to test new obcs support for reading from external files
683      and for passive tracers
684    o fix behavior of ptracers_monitor when monitor output is written to a
685      netcdf-file; still not independent of monitor.F (writes in the same
686      file).
687    o change default value of tRef (put a uniform, meaningful value for ocean
688      & atmos) and initialize sRef (was missing, as Martin mentioned).
689    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
690      to be proportional to enstrophy dissipation length.  Thus,
691       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
692      This is now consistent with Smagorinsky and with the manual.
693    
694    checkpoint57u_post
695    o OBCS and PTRACERS: add open boundary support for passive tracers
696      - either use homogenous (pseudo) v.Neumann conditions or prescribe
697        OB-values from file; this is not different from the way theta and salinity
698        are treated
699      - however, Orlanski-radiation conditions are not supported, and the model
700        will stop if you use pTracers and Orlanski at the same time.
701      - beefed up the rountine obcs_external_fields_load: now only those open
702        boundary values are overwritten with values from files for which there
703        are really files, otherwise the OB-fields remain untouched. This makes
704        it possible to use different OBs at different ends of the domain (as
705        with EXF)
706    o reduce number of exch calls in shap_filt (s2).
707    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
708      truncation level) 4/5 MLAdjust test results (11&12 digits match).
709    
710    checkpoint57t_post
711    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
712    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
713      same truncation, independent of the face number: affects affects several
714      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
715    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
716      note that biharmonic viscosity + no-slip was not tested in any experiment.
717    o fix bug in non-linear free-surf side-drag ; generate new output for
718      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
719    o make mnc honor the writeBinaryPrec flag for most kinds of output
720    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
721    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
722      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
723    o add brackets in multi-terms sum to get same truncation, independent of
724      the face number (manage to get exactly same value of gU,gV at the cs-edge)
725      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
726    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
727      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
728      a maximum grid-scale Reynolds number.  Also, changes all length calculations
729      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
730      Suggested values of viscosity parameters found in mom_calc_visc.
731      Many new viscosity diagnostics available.
732    
733    checkpoint57s_post
734    o Add clearing-house for viscosity calculations, mom_calc_visc and
735      correct numerous bugs in LeithD and Smagorinsky discretizations.  
736      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
737      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
738      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
739      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
740      The Strain-Tension form is now called with useStrainTensonVisc=.true.
741      ViscAhStrain and viscAhTension are now retired.
742    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
743    o In response to JMC's bug report, genmake2 now ignores any soft-links
744      that it finds in the *current* directory when searching for files.
745      Soft-links found in any other source directories will still work as
746      they did before.
747    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
748      a C routine to unlimit the stack size
749    o mnc-ify pkg/aim snapshot vars
750    o mnc-ify pkg/land as requested by Daniel
751    o various changes to mnc including:
752      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
753      - output can now be grouped so that all files within a group
754          change the ITER portion of their names in lock-step together
755      - can now read ("global") PER-FACE (in addition to PER-TILE) files
756          and works with both EXCH1 and EXCH2 (but needs more testing)
757      - writing works for all verification test cases w/ g77 on Linux
758    
759    checkpoint57r_post
760    o make MNC variable initialization happen earlier
761    o add diagnostics for (almost) each term of the momentum Eq.
762    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
763    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
764    o remove MINIMAL_TAVE_OUTPUT option ;
765      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
766    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
767      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
768    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
769    o add time-dependent SST, SSS control
770    o cost terms in ecco/ modularized (new cost_generic.F)
771    o cost_averages routines are modularized (new cost_averagesgeneric.F)
772    o new infrastructure for seaice model vs. obs misfits in seaice/
773      * driver from the_main_loop.F is seaice_cost_driver.F
774      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
775      * gradient check in Exp. 6a of natl_box_adjoint/
776    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
777      (see README file)
778    
779    checkpoint57q_post
780    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
781    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
782      - bug was reported by Jean-Michel and Ian Fenty
783    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
784      update exp. cpl_aim+ocn output.
785    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
786      Needed for high-res. runs with large global files
787      to be able to limit tapelev size
788    o Changed some tests for adjoint:
789      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
790      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
791      * global_ocean.90x40x15/ back to default 3-level checkpointing
792    o Modifications to enable scripted COMMON to MODULE conversion
793      * verification/OpenAD/code/ has necessary scripts and description;
794      * converts, compiles and runs successfully;
795    
796    checkpoint57p_post
797    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
798    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
799      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
800    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
801    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
802      (was already the case for dissipation with mom_vecinv,
803       and also the case for grad.PhiHyd when staggered-timeStep)
804      This will allow to put dissipation out-off the AB time-stepping.
805     Unfortunately, affects truncation error. Update output of exp. that "fails"
806      (cg2d matching number) and leave the others for later: front_relax(10),
807      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
808      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
809    
810    checkpoint57o_post
811    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
812      (2) its ready to be documented during the 20050801 DocFest
813    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
814      for ideal_2D_oce and lab_sea on linux_ia32_g77
815    o set to #undef CTRL_SET_OLD_MAXCVARS_30
816      in global1x1_tot/code_seaice_adj to access indices 32, 33
817      (worth another tag)
818    
819    checkpoint57n_post
820    o adding precip control xx_precip 32
821    o adding swflux control xx_swflux 33
822    o Replacing 10 forcing penalty cost routines by 1 generic.
823    o Implementing partitioning in time-mean and variable adjustment
824      for atmos. state.
825    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
826    o in natl_box_adjoint:
827      * updated exp 1 to 10
828        (but does not have time-mean vs. variable split results yet)
829    o updated global1x1/*_seaice_adj/
830      to incorporate latest changes
831    o enable useSingleCpuIO for mdsio vector routines
832      (applies in particular to tapelev I/O)
833    o removed inefficient K-loop in all active_file*control*.F
834    
835    checkpoint57m_post
836    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
837      and advect_cs (use EXCH-2 and standard cs-32 grid files).
838    o pkg/exch2: filling of face-corner halo regions is optional
839      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
840    
841    checkpoint57l_post
842     tag before updating tutorials (pre-release-2)
843    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
844       for output and interpolation of input fields onto model grid)
845    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
846       Affects results of exp. rotating_tank ; update output.txt.
847    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
848          and taking the square quantity and/or using a fraction-weight field.
849    o fix aim_diagnostics_init.F mate numbers.
850    o add mnc output capability to diagnostics/diagstat and update
851      our cvsignore files for the ACSII output generated
852    
853    checkpoint57k_post
854    o lab_sea now uses diagnostics package and provides a suite of
855      new EXF diagnostics output.
856    
857    checkpoint57j_post
858    o exf
859      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
860        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
861        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
862      * extended diagnostics output
863        - now includes all EXF variables
864        - hs, hl moved to common block
865        - separate S/R for diagnostics, called after ctrl vector is added
866        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
867        - EXFqnet contains true Qnet (i.e. includes qsw)
868      * updated verif. lab_sea, global_with_exf
869      * Rearranging hflux (exf_mapfields -> exf_getforcing)
870        to ensure that diagnostics sees a true EXFqnet
871    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
872    o diagnostics pkg: change pointers so that 1 diagnostic can be used
873      several times with different frequencies.
874    o mnc-ify the thsice package as requested by Daniel Enderton
875      - the monitor--MNC output needs work
876      - many attributes need to be added (most are currently blank)
877    o mnc-ify theaim_v23 package as requested by Daniel Enderton
878      - many attributes need to be added (most are currently blank)
879    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
880    o add Sadourny like discretization to the 4th.O vorticity advection scheme
881    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
882      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
883         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
884    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
885     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
886    
887    checkpoint57i_post
888    o Diagnostics package was changed: diagnostic allocation is now deactivated
889      by setting an empty file name in the namelist (used to be by setting 0 frequency)
890    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
891      add 1rst Order upwind vertical Shear.
892    o add a quick fix for A/B checkpointing in OFFLINE mode
893    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
894      end-run around the C/Fortran linking horror in eesup/src/timers.F
895    o added pkg/runclock: allows user to terminate run based on wall clock
896    o added non-hydrostatic scaling parameter: nh_am2
897    o pkg/my82: futile attempt to make results compiler-independent by adding
898      some "_d 0", etc. no effect.
899    o for mnc output, fill the 'T' coordinate var with myTime and create a
900      separate 'iter' variable for iteration count
901    o pkg/diagnostics:
902      add new capability: output of Global/Regional & per-level statistics ;
903      tested against monitor output (including land & thSIce) on various exp.
904    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
905    
906    checkpoint57h_done
907      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
908      data.diagnostics, data.gchem, data.ptracers) is done.
909    
910    o pkg/diagnostics: prepare for Global/Regional statistics.
911      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
912    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
913      and rename it: DIFFERENT_MULTIPLE
914    
915    checkpoint57h_post
916    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
917    o pkg/diagnostics: change output frequency, now in seconds (instead
918      of Nb of iterations). This requires to change data.diagnostics.
919    checkpoint57h_pre
920    
921    o in mnc, let the user create the output dir if both mnc_outdir_date
922      and mnc_outdir_num are false
923    o add fflags() to pkg/diagnostics which allows one to specify, on a
924      per-file basis, the file precision [default behavior is unchanged]
925    o added diagnostics to pkg/kpp, including computation of mixed layer
926      depth based on a temperature/density criterion
927    o updated verification/natl_box to test the new pkg/kpp diagnostics
928    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
929    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
930    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
931      not mnc -- this mistake was found by JMC and is now corrected
932    
933    checkpoint57g_post
934    o add Adams-Bashforth 3rd Order time stepping:
935      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
936      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
937    checkpoint57g_pre
938    
939    o make lambda[Theta,Salt]ClimRelax spatially varying
940      (default remains spatially uniform constant based on tau)
941    o added new control variables
942      * init. uVel, vVel, etanN
943      * lambda[Theta,Salt]ClimRelax
944    o separate masks used for ctrl_pack/unpack 'from write_grid' output
945      (suggested by G. Forget)
946    
947    checkpoint57f_post
948    o add parameter "baseTime" = model base time = time at iteration zero
949      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
950      account for baseTime shift
951    o move Coriolis arrays from PARAMS.h to GRID.h
952    checkpoint57f_pre
953    
954    o mnc-ifying the seaice package
955    o introduced an alternative length scale calculation for use in the limiting
956      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
957    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
958    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
959      as well as grad(vort3).  Made it compatible with both approximate form
960      for the cubed sphere and full form of these gradients.  Added flag
961      useFullLeith to select between approximate and full form.  
962    o add "d0" in getcon.F to reduce differences between compilers/platforms
963      update output.txt of exp. fizhi-gridalt-hs
964    o change port_rand funtion to allow to set the seed.
965    o fix obscure MNC bug involving conversion between reals and integers
966      - it caused no problems with certain (eg. gcc, ifc) compilers but the
967        new version is now more standards-compliant
968    o adjoint-related modifications
969      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
970      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
971      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
972    
973    checkpoint57e_post
974    o Adding eddy stress controls a la Ferreira et al.
975    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
976    
977    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
978      update output.txt of exp. fizhi-gridalt-hs
979    o add more "Z" dimensions and associated coordinate vars to MNC
980    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
981    o parameter calendarDumps: when set, approximate months (30-31 days) and years
982      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
983      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
984      months and years.  Requires pkg/cal.
985    o diagnostics: add pickup functionality
986      - off by default for backwards compatibility
987      - current version only uses MDSIO -- MNC will be added
988    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
989    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
990    
991    checkpoint57d_post
992    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
993    o modify verification/ideal_2D_oce so that it tests the creation of mnc
994      output from the diagnostics package
995    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
996    o make genmake2 more portable by using ".$FS" instead of ".f" for more
997      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
998    o add coordinate variables to the MNC output from the diagnostics package
999    o change MNC-flags default value: true when useMNC=TRUE
1000    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1001      the ability (off by default) to read the grid information using MNC
1002    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1003    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1004    o do snap-shot diagnostics at the middle of the time-interval (instead of
1005      at the end).
1006    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1007      new test for AIM with thSIce + slab-ocean
1008    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1009    o move state variable diagnostics to the beginning of the time step ;
1010      (note: still needs some work specially for snap-shot diagnostics)
1011      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1012    
1013    checkpoint57c_post
1014    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1015    o generate new output.txt files on faulks with g77 & the new -ieee option
1016    checkpoint57c_pre
1017    
1018    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1019      update output.txt of exp. global_ocean.90x40x15
1020    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1021      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1022    o add saltFlux(+File) forcing capability with periodicExternalForcing
1023    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1024    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1025    o improvements for the MNC output from DIAGNOSTICS:
1026      - correct handling of the unlimitied dimension
1027      - all dims now have associated coordinate variables
1028      - variables located at U, V, and Corner ("Z") points are now written
1029        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1030        *all* data points are output
1031    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1032    o added pkg/seaice/seaice_monitor.F
1033    o mdsio_readfield.F can now read files visible only to master MPI process.
1034    o pkg/seaice: some test code for ice-modified ocean stress
1035    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1036      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1037      spurious negative numbers for precipitation and humidity.  Will cause
1038      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1039    o pkg/ctrl/
1040      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1041        May be enabled via doPackDiag
1042      *  introduce z-scaling of
1043         + gradient (doZscalePack) and
1044         + control (doZscaleUnpack)
1045    o pkg/mdsio/
1046      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1047      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1048    
1049    checkpoint57b_post
1050    o simplify options in diagnostics_fill arguments (remove weird combinations)
1051    o fix MNC coordinate variables so that they now contain per-face index
1052      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1053      general, EXCH2 grids are only aligned to a "local" coordinate system
1054    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1055    o Implement instantaneous output within pkg diagnostics:
1056      setting a negative frequency in data.diagnostics produces
1057     "snap-shot" output (as opposed to time-average if freq > 0)
1058    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1059      NOTE: change ptracer diagnostics name: use 2 characters to work with
1060            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1061    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1062      becomes the coordinate variable for the 'T' dimension
1063    o add CF-style coordinate variables to MNC
1064      - just a first cut:  numbers are meaningless on the cubesphere and
1065        missing along the T axis but otherwise it works!
1066    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1067    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1068    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1069      this is based directly on what the model compute, so that the content of
1070      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1071    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1072    o clean up build options files for SunOS, in particular
1073      - remove -traditional from xmakedepend
1074      - change -xarch=v9 to -xarch=native for f77
1075      - restore use of make (not gmake)
1076      - add CC=gcc if using g77
1077    o changes per discussion of AM, JMC, & EH3 today:
1078      - move redundant "grid" variables out of "state" -- in preparation of
1079        creating proper CF-style coordinate variables and in recognition
1080        that any/all grid variables can be easily copied (eg. w/NCO) from
1081        the grid files into any of the other NetCDF files
1082      - *always* output grid variables with MDSIO (this will eventually be
1083        changed)
1084      - output MNC grid file if useMNC is true
1085    o every instance of _END_MASTER() has been found and replaced with
1086      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1087      preprocessors
1088    o re-arrange diagnostics pkg initialisation:
1089     - allow each package to extend the available diagnostics list
1090     - add some checking and fix small problems (multi-threaded, ...)
1091     - new S/R diagnostics_fill (replace fill_diagnostics):
1092       look through the short list of active diag. (instead of the long list)
1093       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1094    
1095    checkpoint57a_post
1096    o this set of changes restores TAMC compatibility
1097      tested for global_ocean.90x40x15 adjoint on trough
1098      (what a pain)
1099    
1100    checkpoint57a_pre
1101    o some modifs in tools/build_options for sunos
1102    o call ctrl_pack for ctrl at end for optimcycle=0
1103    
1104    checkpoint57
1105    o add horizontal bi-harmonic viscosity for vertical velocity
1106      - new parameter viscA4W (defaults to viscA4)
1107      - affects only non-hydrostatic code
1108      - to be done: no-slip lateral boundary conditions
1109    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1110    o implement Implicit Vertical advection for pTracers
1111    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1112      (implemented also for implicit vertical diffusion & advection)
1113    o OBCS: extend application of tracer open boundary conditions
1114      to a strip beyond the boundary of width Olx/Oly
1115    o add call monitor to TAF set of required calls (flow directives)
1116      and include in natl_box_adjoint
1117    o untangle a few ifdefs related to cost, ctrl, autodiff
1118      untangel a few ALLOW_ECCO_OPTIMIZATION
1119    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1120      (theta2, salt2 in ecco_cost_weights)
1121    
1122    checkpoint56c_post
1123    o OBCS as control variables
1124      - update ctrl_ad_diff.list, obcs_ad_diff.list
1125      - remove balance of obcs controls from default
1126      - fix index bug nobcs in ctrl_init
1127      - fix dummy fields filen in ctrl_pack
1128      - add dummy weights for obcs
1129    o lsopt: comment out fort.94 output
1130    o optim:
1131      - remove unnecessary header files
1132      - adjusted namelists
1133      - add xerbla.F to Makefile
1134    o exf:
1135      - multiple modifications of exf_check_range
1136      - unit change in exf_init_runoff from [m/year] to [m/s]
1137    o mdsio:
1138      - i/o-vector change debugLevel from debLevA to debLevB
1139    
1140    checkpoint56b_post
1141    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1142      is called from DO_THE_MODEL_IO
1143      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1144      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1145      - clean up PTRACERS_WRITE_TIMEAVE a little
1146    o add another verification experiment that tests both the cfc-pkg and
1147      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1148      reactive tendencies treated inline with regular timestepping
1149    o testreport previously did a lousy job of comparing small numbers, so
1150      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1151      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1152      testreport.
1153    o ptracers_monitor: bug fix for MPI
1154    
1155    checkpoint56a_post
1156    o GCHEM: finish reorganizating the package
1157      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1158        (introduces another 3D-array for each passive tracer, but only if
1159        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1160        gchemTendency is not needed because the timestep is done separately)
1161      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1162      - GCHEM is now---more or less cleanly---separate from PTRACERS
1163      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1164        so clear to me how that should be done in a general way.
1165    o CFC: improve formatting of output in CFC_ATMOS
1166    o PTRACERS:
1167      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1168        that ALL experiments with ptracers enable can be checked. This makes
1169        GCHEM_MONITOR obsolete.
1170      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1171        monitorFreq
1172      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1173    o add PTRACERS (PTR0[1-5]) to testreport output
1174    o exf_check_range:
1175      * default changed to .TRUE.
1176      * will check values for niter0 if debLevA, every timestep if debLevB
1177      * STOP in exf_check_range if 'out of range'
1178      * range chosen generous to allow for potential extema
1179      TBD: a version with stricter range
1180           permitted range would be runtime parameters
1181    o GMredi:
1182      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1183      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1184      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1185    o GCHEM:
1186      - move call to GCHEM_FORCING_SEP, so that it is now called before
1187        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1188      - introduced a useGCHEM runtime flag and applied it everywhere.
1189      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1190        this flag is now only visible within GCHEM-pkg routines.
1191      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1192        be replaced by a 3D array that is computed before thermodynamics; for
1193        this, the tracer ID iTracer had to be included into the parameter list
1194        of ptracers_forcing
1195      - set up forward_step to call gchem_forcing, that will replace
1196        gchem_forcing_int in ptracers_forcing
1197      - cleaning up
1198    o small cleaning of exch2: remove files that are also in eesupp/src
1199    
1200    checkpoint56
1201    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1202    o mnc: cleanup "full" files--fixes out-of-memory problem
1203    o ECCO-GODAE
1204      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1205      * fully merged and updated from SIO code
1206        windstress sign change affects
1207        - exf_inscal_[u/v]stress
1208        - sign of xx_tau[u/v] adjustments
1209        - signs in cost_scat
1210      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1211      * natl_box_adjoint updated and compressed
1212      * 2-level checkpoint switch added
1213        (tested in EXP. 1 of natl_box_adjoint)
1214      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1215    o SVD
1216      * first complete, non-hacked version for SVD calculations
1217      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1218        performed via direct access files admtlm_vector.it????
1219        (via ctrl_[un]pack)
1220      * optimcycle is used for ARPACK iteration counter
1221        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1222      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1223        and add linear transforms where necessary
1224      * controls are initial/final SST, SSS (can be extended; need to check
1225        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1226    o mdsio: filename info to both stderr, stdout
1227    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1228      from sign change
1229    
1230    checkpoint55j_post
1231    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1232      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1233    o add consistent build directories and .cvsignore files to verification
1234    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1235    o make all subroutines 30 or less characters in length for certain older
1236      compilers to work (a thorough search only turns up two routines in
1237      pkg/ptracers)
1238    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1239      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1240    
1241    checkpoint55i_post
1242    o change arrays for total vertical diffusivity (2.D if explicit,
1243      3.D if implicit) ; each ptracer uses its own background value.
1244    o added mnc/NetCDF output capability to ocn_compon_interf
1245      - added bits to verification/cpl_aim+ocn so that it can run on
1246        ITRDA and other clusters without the mpirun "-wd" option
1247    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1248      configuration
1249    o give MNC the ability to create additional files rather than
1250      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1251      - the default is just less than 2GB which is a practical limit
1252        on many systems
1253    o Compute the non-local term using either KPP vertical diffusivity (=default)
1254       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1255    
1256    checkpoint55h_post
1257    o add verification test "vermix"
1258    o remove all the *_ioinc flags and replace with the single global
1259      outputTypesInclusive flag
1260    o allow to set a vertical profile of vertical diffusivity for T & S
1261    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1262    o useMNC moved from data.mnc to data.pkg
1263    
1264    checkpoint55g_post
1265    o Renaming carbon AD experiments to comply with testreport conventions
1266    o Updating adjoint of Held-Suarez hs94.1x64x5
1267    o Fixing directives for non-ECCO forward_step, after ECCO directives
1268      have been fixed to avoid recomp. of do_oceanic_phys
1269      Works well for global_ocean.90x40x15,
1270      but recomp. issue remains for carbon
1271    o Updating adjoint output for natl_box_adjoint after
1272      pkg/ecco has been modified (see taga c55d_post)
1273    
1274    checkpoint55f_post
1275    o rename to timeave_init_fixed
1276    
1277    checkpoint55e_post
1278    o some delicate re-shuffle of store directives to avoid one
1279      extra call of do_oceanic_physics
1280      affects ecco_the_main_loop.F, do_oceanic_physics.F
1281      checkpoint_lev1_directives.h
1282    o NB: this may break global_ocean adjoint temporarily,
1283      but it is clear how to fix it. Will do later, need this now.
1284    
1285    checkpoint55d_post
1286    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1287    o ecco_cost_weights is modified to 1x1 runs
1288    o modifs to allow observations to be read in as
1289      single file or yearly files
1290    o enable to read exf forcing fields as either
1291      single file or yearly files (flag useExfYearlyFields)
1292    checkpoint55d_pre
1293    
1294    o switch between 2-level and 3-level checkpointing
1295    o add ability of MNC to write local and "partial" (eg. 2D slices where
1296      the full 3D field is never actually stored) arrays to NetCDF files
1297      with the correct (that is, the complete multi-dimensional) set of
1298      array indicies
1299      - used in mom_vecinv() to write the diagFreq output
1300      - tested (demonstrated) in verification/aim.5l_cs
1301    o further mnc-ification
1302      - add verification/lab_sea to the list with mnc setups
1303      - fix undefined mnc v-names in cd_code
1304      - add kpp to mnc output (both snapshot and timeave)
1305    o non-hydrostatic code
1306      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1307        in calc_gw.F
1308      - defaults to viscAh
1309      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1310        friction or Leith) in non-hydrostatic mode, as long as there is
1311        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1312    o pkg/cost
1313      extend simple cost functions to treat time mean quantities
1314      (T,U,V) via cost_accumulate_state from cost_tile
1315    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1316        be 2 times larger than the minimum size the advection scheme requires.
1317        now get a perfect conservation of salt in advect_cs test-exp (updated)
1318    o GGL90 (Gaspar's TKE mixed layer)
1319      - add horizontal diffusion of TKE, requires exchanges in
1320        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1321        default. In OPA there is no horizontal diffusion of TKE but the
1322        mixing coefficients are computed from a horizontal average of TKE of
1323        6 points or so. I think that diffusion has a little more physical
1324        justification.
1325      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1326        was in vain)
1327      - mask tke-variable in ggl90_init
1328    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1329    o fix biharmonic diffusion on CS-grid.
1330    o more obcs stuff
1331      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1332        for reading boundary values. This routine is called from
1333        obcs_prescribe_read
1334      - updated obcs_check
1335      - changed sponge layer relaxation parameter units for days to seconds
1336      - turned off sponge layer by default
1337      - changed argument list of OBCS_CALC to myTime+deltaTclock
1338      - fixed about 35 bugs in obcs_external_fields_load
1339    
1340    checkpoint55c_post
1341    o obcs stuff
1342      - new runtime flags useOBCSprescribe, useOBCSbalance
1343      - re-arranged obcs_calc
1344      - moved exf_getobcs to obcs_prescibe_read
1345        obcs_prescibe_read is called after ORLANSKI stuff
1346        and independent of it (executable can contain all).
1347      - updated obcs_check
1348      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1349        These may be necessary only if tangential velocities are
1350        prescribed at OB, not sure, needs testing.
1351    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1352      which simplifies the calls and passes the ifc check-bounds test
1353    
1354    checkpoint55b_post
1355    o add a 2D scalar, Z location, exchange_2 routine.
1356    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1357      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1358      affects advect_cs results (for the wrong reason): update output.txt
1359    o use a more standard discretization for biharmonic viscosity ;
1360     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1361      affects results of dome set-up: update output.txt
1362    o fix gad_advection.F (CubedSphere part), back to version 1.23
1363    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1364    
1365    checkpoint55a_post
1366    o merged code to
1367      * prescribe/read time-dependent open boundaries
1368        (works in conjunction with exf, cal)
1369      * sponge layer code for open boundaries
1370      * each boundary N/S/E/W now has its own CPP option
1371        (healthy for the adjoint)
1372    
1373    checkpoint55
1374    o up-to-date adjoint of previous breaks
1375      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1376      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1377      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1378      - carbon: * remove tr1-related adjoint verification
1379                * add ptracer as control variable
1380    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1381      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1382    
1383    checkpoint54f_post
1384    o in verification/carbin/ remove experiment related to
1385      ALLOW_PASSIVE_TRACER (array tr1 etc)
1386      code_ad/ input_ad/ results_ad
1387    
1388    o add two new packages
1389      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1390        + subject to optimization (memory)
1391      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1392        + subject to reordering (many GOTOs in the original code)
1393        + so far opps is called for every (i,j) point, and then operates in
1394          the vertical; one may want to reorder the scheme in order operate in
1395          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1396          fields)
1397    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1398      - all verification tests compile and run with linux_ia32_g77
1399      - defaults are compatible with current input files--nothing
1400        should change if you were not previously using MNC
1401      - MNC output has been added in numerous places (eg. timeave)
1402        but there are still a few writes not yet do-able with MNC
1403        (this is in progress)
1404      - flags now allow for either/or/both use of MDSIO and MNC and
1405        documentation will soon follow
1406      - numerous small formatting cleanups for ProTeX
1407    o add version info (via BUILD_INFO.h) to MNC and stdout
1408    
1409    checkpoint54e_post
1410    o add two new packages
1411      - pp81 (Packanowski and Philander, 1981), Richardson number and
1412        stratification dependent mixing
1413      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1414      - these scheme operate in a similar manner as KPP (without ghat, of
1415        course), however there is only one diffusivity that is used for both
1416        temperature and salinity (and passive tracers)ç
1417    o add offline package
1418    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1419      provided by Stephanie Dutkiewicz
1420    o genmake2: add ability to search for C compilers and cleanup test output
1421      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1422    
1423    checkpoint54d_post
1424    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1425    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1426      leading to additional shift by 5 days each year of integration
1427       (i.e. leading to considerable offset over the years)
1428    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1429    o start with no AB and no initial filtering (staggerTimeStep):
1430      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1431    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1432      (external loading & cpl import/export stay in forward_step.F)
1433    o update coupling interface to work with new staggerTimeStep
1434    o change MDSIO ptracers_pickup.
1435    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1436    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1437    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1438    
1439    checkpoint54c_post
1440    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1441      this affects (truncation error) output.txt of test-exp:
1442       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1443    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1444    o change Qnet to always be the net heat flux, (+upward).
1445      affects (truncation error) output of natl_box exp.: updated
1446    o define the max number of passive tracers in PTRACERS_SIZE.h
1447    o start to test mnc routinely in exp0
1448    o add sea-ice loading (sIceLoad) as a new forcing field.
1449    
1450    checkpoint54b_post
1451    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1452       impressive on Altix and Opteron systems)
1453    o diagnostics can now write NetCDF files through the mnc package
1454    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1455    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1456    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1457      affects (truncation error) output of lab_sea & natl_box exp.: updated
1458    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1459    
1460    checkpoint54a_post
1461    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1462    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1463    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1464    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1465      + internal_wave (shift in writing cg2d_ini_res)
1466    checkpoint54a_pre
1467    
1468    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1469      - modified verification/lab_sea and natl_box_adjoint accordingly
1470    
1471    checkpoint54
1472    checkpoint53g_post
1473    o prepare splitting of thermodynamics: store convect.counter in common block
1474    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1475      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1476    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1477    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1478    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1479    o restore adjointability
1480    
1481    checkpoint53f_post
1482    o modifications that affect AIM experiment results (update output.txt):
1483      - no advection of S at top interface Nr (pkg/generic_advdiff)
1484      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1485    o AIM pkg:
1486      - include stability function into surf.Flux derivative relative to Tsurf
1487      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1488    
1489    checkpoint53e_post
1490    o merged cylindrical coord configuration
1491    o added rotating_tank experiment
1492    checkpoint53e_pre
1493    
1494    checkpoint53d_post
1495    o faulks upgraded: re-generate output.txt that have changed:
1496       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1497    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1498    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1499    o added Sadourny discretization of Coriolis
1500      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1501      - re-enabled use of omega3 (useAbsVorticity)
1502    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1503      vector-invariant equations
1504      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1505    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1506      hopefully without new bugs
1507      - still to do: biharmonic friction for non-hydrostatic w
1508    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1509    o regenerated output for global_ocean_ebm (using -ieee)
1510    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1511      of mom_common/
1512      - simple re-arrangement of instructions within computing loop
1513    checkpoint53d_pre
1514    
1515    checkpoint53c_post
1516    o new version of coupler for AIM+thSIce and Ocean models
1517     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1518     - land: change Evaporation of snow
1519     - aim with thSIce: fix bug in snow-precip.
1520    o changes to calc_gw.F
1521     - bug fix for w^2 term near the bottom boundary
1522     - (hopefully) improve the lateral slip boundary condtions for use with
1523        partial/looped cells
1524      - because the bug fix changes two verification experiments anyway (exp5
1525        and plume on slope), change the lateral boundary condition from half slip
1526        to the value of no_slip_sides
1527    o ebm package wasnt quite up to the parallel task. Fixed that.
1528    o Adjoint of EBM package + verification
1529      * TLM OK
1530      * ADM not sufficient accuracy yet (needs further testing)
1531    
1532    checkpoint53b_post
1533    o Commiting new energy balance model to repository
1534      * package is pkg/ebm
1535      * verif. is verification/global_ocean_ebm
1536      * references are in ebm_driver.F
1537    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1538    C        Global thermohaline circulation. Part I:
1539    C        Sensitivity to atmospheric moisture transport.
1540    C        J. Climate 12(1), 71-82
1541    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1542    C        Global thermohaline circulation. Part II:
1543    C        Sensitivity with interactive transport.
1544    C        J. Climate 12(1), 83-91
1545    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1546    C        Destabilization of the thermohaline circulation
1547    C        by atmospheric eddy transports.
1548    C        J. Climate 7(12), 1870-1882
1549    o Will need long integration testing.
1550    checkpoint53b_pre
1551    
1552    o created pkg/mom_common in preparation for variable viscosity code
1553    o renamed and split ini_mnc_io
1554    o pkg/land: only liquid water can diffuse or run-off
1555    o AIM using land: soil wetness availability account for snow
1556    o added printMapIncludesZeros to EEPARMS namelist
1557    
1558    checkpoint53a_post
1559    o restore TAMC compatiility for exf_constants.h
1560      (no usage of _d in .h)
1561    o Additional storing in KPP in an attempt to fix
1562      TAMC problem with adjoint of KPP code.
1563      (no success...)
1564      Identical code works fine with TAF.
1565    o Fixed verification/natl_box_adjoint experiments.
1566      Initial conditions for Experiments 4 and 5 are now
1567      set to "SEAICE_initialHEFF=0", which is more reasonable,
1568      and hence gives results closer to that of Experiment 2.
1569      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1570    
1571    checkpoint53
1572    o stable checkpoint with up to date adjoint
1573      TLM tests only run for 1st grdchk at the moment. Its unclear if
1574      this is a code problem or a problem with resetting code for g_
1575      variables that is being autogenerated wrong.
1576      Otherwise:
1577       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1578       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1579         are both still in chaos following their security messes.
1580    
1581    checkpoint52n_post
1582    o various build (mostly genmake2) changes including:
1583      - ability to build/run more easily within Cygwin and MacOS X
1584      - more complicated Makefiles with a stronger dependence on Gnu Make
1585    o pkg/seaice modifications
1586      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1587        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1588        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1589      - changed proxy for geostrophic velocity and updated
1590        verification/lab_sea/results/* accordingly
1591      - removed ADI dynamic solver from pkg/seaice
1592      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1593        they caused a segmentation fault under certain circumstances
1594      - removed unused field WATR
1595    o bug fix in exf-package:
1596      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1597         now reflect that.
1598    o small fixes in the cal-package:
1599      - set reference date to first of January for the 'model'-calendar
1600      - failing of cal_CheckDate in cal_FullDate now actually results in a
1601        warning
1602    o small modifications in exf-package to increase flexibility:
1603      - change climtempfreeze from a constant to a runtime parameter that
1604        is specified in data.exf_clim (default = -1.9)
1605      - introduce runtime parameter windstressmax (default = 2.0) that is
1606        specified in data.exf
1607    o fix in pkg/thsice:
1608      - update Evap (Tsf changes) to be consistent with Latent heat flux
1609      - maintain snow precipitation unchanged (even if Tsf >=0).
1610     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1611    
1612    checkpoint52m_post
1613    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1614      this does not change any of the results, because myIter=0 in swfrac always
1615      lead to jwtype=2 (the default anyway), but the call makes little sense
1616      as a default
1617    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1618    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1619      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1620    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1621    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1622    o extending useSingleCpuIO option to work with new exch2 I/O format
1623      - old-style, missing-tile I/O is still accessible by defining CPP
1624        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1625    o monitor package can write to NetCDF files and/or STDOUT
1626    o fix re-definition bug in MNC_GRID_INIT_ALL()
1627    o doc/api_reference added
1628      - a framework for building an API Reference Manual using all
1629        the "protex" comments embedded in the code
1630      - see pkg/generic_advdiff, pkg/mnc for examples
1631    o MNC:
1632      - make myThid the last argument for all subroutines
1633      - new default for the grid files: NO halos
1634      - add useMNC and other run-time flags
1635      - separate per-file-group handling of the unlimited dimension
1636      - early initialization of MNC w/ flags read at the eeboot stage
1637        and lookup tables set in initialize_fixed
1638      - write all MNC output to a freshly-created directory
1639    o thermodynamics sea-ice (thsice) is now tested with testreport.
1640    o test exp. advect_cs: use the standard cs32 grid ; update output.
1641    o Added functionality to grdchk:
1642      pick global i,j,k position (or nearest wet) where to perform check.
1643    
1644    checkpoint52l_post
1645    o new land formulation:
1646      a) use ground enthalpy as prognostic variable to ensure exact
1647         energy conservation.
1648      b) account for water temperature and for latent heat of freezing
1649         in all processes (rain, run-off, ground storage)
1650      c) compute surface and ground temperature implicitly.
1651    o aim_v23 modification for new land model:
1652      a) Treat separately land / ocean / sea-ice surface fluxes
1653         to allow implicit computation of land & sea-ice surface temp.
1654      b) add snow precipitation.
1655    checkpoint52l_pre
1656    
1657    o fix problem (when 1 tile is empty) in min/max monitor.
1658    o fix bug in timeAve (u,vZetatave in common block)
1659    o no restoring terms under ice for pkg/seaice
1660    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1661    o bug fix for pkg/seaice pickups
1662    o change MNC call locations and add coordinate attributes
1663    o mask vorticity at the corner ; affects global_ocean.cs output
1664    o fix ini_curvilinear_grid ; test CS experiments with mpi
1665    o aim.5l_cs: modify sea-ice fraction input file ; update output
1666    o exf: Adding simple range check routine for exf fields after read
1667    
1668    checkpoint52k_post
1669    o removed top-level directory "diags"
1670      - we migrated these functions to pkg/timeave a long time ago
1671    o fixed bug introduced in pkg/monitor
1672    o accuracy ctrlprec = 32 insuffient for gradient checks using
1673      averaged fields (I/O via cost_averages)
1674      -> use ctrl.h in active_file*.F to control I/O precision.
1675    o paramter list of CALL ADTHE_MAIN_LOOP
1676    o added initial do_the_model_io to ecco
1677    o set all ...Freq to zero after cost_final
1678      taveFreq, dumpFreq, pChkptFreq
1679    o MAIN and ECCO differentiability restored
1680    
1681    checkpoint52j_post
1682    o fix nchklev in tamc.h for global_ocean...
1683    o Bringing flow and store directives up-to-date
1684    o Really weird thing!
1685      call do_the_model_io from the_main_loop with parameters
1686      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1687      TAF places a faulty re-call of initialise_varia
1688      after cost_final call which should not be there!
1689    checkpoint52j_pre
1690    
1691    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1692      error messages
1693    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1694    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1695      debug output
1696    o modfied mdsio_writefield.F to handle non-global files under exch2
1697    o update AIM Cubed-Sphere exp (aim.5l_cs):
1698      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1699    o update AIM Equatorial Channel exp:
1700      use standard aim_v23 pkg and change the SST fields to be more realistic.
1701    o globalFile now works with exch2
1702    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1703      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1704    o limit timeave output for hi-res integrations
1705    
1706    checkpoint52i_post
1707    o removed CPP_EEOPTIONS.h from verification/*/code
1708    o updated the tiling for global_ocean_pressure
1709    checkpoint52i_pre
1710    
1711    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1712      the old pkg/aim).
1713    
1714    checkpoint52h_pre
1715    o shortened offending lines in exch2_send_rx?.template
1716    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1717    o genmake2: add build & execute test for NetCDF code
1718    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1719      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1720    o added useSingleCPUIO flag to monitor.F and mon_out.F
1721    o added temporary hack for sea-ice dynamics on the cube:
1722      metric terms are ignored and it is assumed that
1723      there is no sea-ice on cube faces 1, 2, 4, and 5.
1724    
1725    checkpoint52f_post
1726    o added exch2 cube routines to pkg/exch2
1727    o modified hs94.cs-32x32x5 to use it
1728    o added new grid files to hs94.cs-32x32x5
1729    checkpoint52f_pre
1730    
1731    checkpoint52e_post
1732    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1733      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1734    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1735      to work with implicit vertical advection and AB ;
1736    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1737    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1738     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1739    checkpoint52e_pre
1740    
1741    o fix bug in impldiff when Nr=1 or Nr=2.
1742    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1743    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1744    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1745      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1746    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1747    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1748    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1749    
1750    checkpoint52d_post
1751    o re-tiled many expts to allow comparison in multi-processor mode
1752      - updated output accordingly
1753      - changed hs94.128x64x5 to use intial T from file rather than use the
1754        random number generator
1755    o add infrastructure in model routines for fizhi and gridalt packages
1756    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1757    o changes to permit hi-res, cubed-sphere, configuration
1758      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1759      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1760      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1761        of surface winds for the cube
1762      (A verification experiment, based on global_ocean.cs32x15, but with
1763       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1764       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1765       complete with example surface forcing files and matlab scripts to look
1766       at the output and compare it with that of global_ocean.cs32x15.)
1767    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1768       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1769       to conform to the common rule.
1770    o check-in the first version of the coupler + interfaces for multi-components
1771       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1772       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1773       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1774       - ocean and atmos. share the same horizontal grid (no interpolation).
1775       - exchanges between component and coupler is done in forward_step
1776    o new verification experiment, cpl_aim+ocn:
1777       coupled ocean - AIM atmosphere on cs32 grid.
1778    
1779    checkpoint52d_pre
1780    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1781    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1782    
1783    checkpoint52c_post
1784    o Fixing OPTIONS files for use of exf:
1785      - ALLOW_ECCO not needed
1786      - ECCO_CPPOPTIONS.h should not be included from
1787        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1788        as has been the case in the past
1789      - All cal/exf related options are currently set in
1790        single header file. Should remain so until we
1791        agree on a consistent new policy.
1792    o Removed all CPP options for cal package.
1793      cal has no more CPP options.
1794    o modified STOREs in GAD_ADVECTION
1795    o corrected key comp. for passkey
1796    
1797    checkpoint52b_post
1798    o new version: "thsice" of thermodynamic sea-ice pkg:
1799     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1800     - modify fluxes but do not change theta directly;
1801     - light cleaning of bulk_force pkg (still needed with thsice).
1802     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1803       + output_thsice.txt to test thsice & bulk_force pkgs.
1804    o put back grid & coriolis monitor output.
1805    checkpoint52b_pre
1806    
1807    o call "do_the_model_io" at the beginning (=> dump initial state)
1808    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1809    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1810      (need info on NUMBER_OF_PTRACERS)
1811    o missing PTRACERS headers in some routines
1812    o default tamc.h in pkg/autodiff supposed to crash
1813      to ensure proper customization
1814    
1815    checkpoint52a_post
1816    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1817      - moved surfaceTendencyTice from pkg/seaice to main code
1818      - subroutine FREEZE_SURFACE now limits only surface temperature
1819        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1820        => new output.txt for global_ocean.cs32x15 & global_with_exf
1821      - keep the old version of FREEZE for backward compatibility;
1822        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1823      - corresponding modifs for TAF directives
1824    o added surface flux output variables to TIMEAVE_STATVARS
1825    o time-averaged output for pkg/ptracers
1826    o fix problem with ECCO-related divided adjoint
1827      snapshot file was missing some ad-variables,
1828      but no warning issued by TAF
1829    
1830    checkpoint52a_pre
1831    o some bug fixes for #undef REAL4_IS_SLOW
1832    
1833    checkpoint52 = ecco_c52_e35
1834    o after testing adjoints of checkpoint51u_post
1835    
1836    checkpoint51u_post
1837    o this is the post-merge tag of the ecco-branch
1838      (needs another clean checkout and re-testing)
1839    o various natl_box_adjoint configs and results
1840      but no input fields
1841    o obcs adjoint not yet merged!
1842    o adding ECCO global 1x1 and 2x2 degree configs
1843    o updated/extended some store directives for seaice
1844    o pkg/ecco now containes ecco-specific part of cost function
1845    o top level routines the_main_loop, forward_step
1846      supersede those in model/src/
1847      previous input data.cost now in data.ecco
1848      (new namelist ecco_cost_nml)
1849    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1850    
1851    checkpoint51t_post
1852    o this is the pre-merge tag of the ecco-branch
1853    
1854    checkpoint51s_post
1855    o cleanup: removed various obsolete #define-s
1856    o pkg/grdchk
1857      - renamed 'ph-grd 3' to 'grad-res'
1858      - merged from ecco-branch
1859        (remaining bug fixes for obcs gradient checks)
1860      - additional high-precision output for testreport
1861        (grep for 'precision_grdchk_result')
1862    
1863    checkpoint51r_post
1864    o cleaned up or removed CPP_OPTIONS.h files
1865    o updated results for some of the tests to reflect the new
1866      optfiles (-ieee: -O0 instead of -O3)
1867    
1868    checkpoint51q_post
1869    o cd_code:
1870      - moved cd_scheme.F -> cd_code_scheme.F
1871      - separate read_checkpoint from cd_code_ini_vars.F
1872      - separated cd_code part from write_checkpoint
1873      - updated AD_SOURCE, generated .flow
1874      - added CD_CODE_VARS.h to the_main_loop
1875      - Moving cd_code specific store dir.s to pkg/cd_code
1876    o ctrl package totally restructured
1877      - pack/unpack now optional and decoupled from
1878        xx_/adxx_ I/O
1879      - ctrl_pack/unpack cleaned
1880        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1881      - confined inclusion of AD_CONFIG.h to where necessary.
1882    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1883    
1884    checkpoint51p_post
1885    o create initial cd_code package
1886      - WARNING: the initialization of fields within packages
1887        is broken because INI_FIELDS (where READ_CHECKPOINT is
1888        called) is called *before* PACKAGES_INIT_VARIABLES.
1889        This seems to be backwards since
1890        1) its important to initially zero the entire field including
1891           the "halo" region
1892        2) zeroing needs to be done *before* reading pickup info
1893           and the pickup call might or might not happen in any
1894           particular run
1895      - this needs an overhaul for R2
1896    o cleanup verification/*/code/GMREDI_OPTIONS.h
1897    o cleanup testreport
1898    
1899    checkpoint51o_post
1900    o bringing AD-related verif's up to date with genmake2
1901      - carbon/
1902      - global_ocean.90x40x15/
1903      - hs.94.1x64x5/
1904      - (front_relax/ )
1905    o (more) consistent directory structure for AD-related verif.'s
1906    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1907    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1908    o bug fix in find_alpha.F for MDJWF:
1909      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1910        change rho -> rho-rhoConst
1911      - replace call find_rho to find_rhonum
1912    o initialisation of rFlx extended to full array (required by TAF)
1913      and shifted to thermodynamics
1914    o removed PTRACERS.h in ptracers routine
1915    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1916    o Correcting initialisations for fVerU, fVerV.
1917    o helping TAF to recognize dependency on kUp for
1918      fVerU, fVerV
1919    o Replacing delZ by delR in pkg/ctrl/
1920    checkpoint51o_pre
1921    
1922    o undid all of cp51 pending some cleanups and discussion
1923    o added the [#include "AD_CONFIG.h"] statement to all files that need
1924       it for adjoint/tl #defines
1925     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1926     o removed tools/genmake since it no longer works
1927    
1928    checkpoint51n_post
1929    o modifications to make FREEZE flux visible to pkg/kpp
1930      - moved surfaceTendencyTice from pkg/seaice to main code
1931      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1932      - subroutine FREEZE now limits only surface temperature
1933        (this means new output.txt for global_ocean.90x40x15,
1934         global_ocean.cs32x15, and global_with_exf)
1935    o added surface flux output variables to TIMEAVE_STATVARS
1936    
1937    checkpoint51n_pre
1938    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1939    o added [#include "AD_CONFIG.h"] to all files that use the following
1940      defines:
1941      - ALLOW_ADJOINT_RUN
1942      - ALLOW_TANGENTLINEAR_RUN
1943      - ALLOW_ECCO_OPTIMIZATION
1944    
1945    checkpoint51m_post
1946    o incorporating changes to get TAMC/TAF working in genmake2
1947      - added new TAMC/TAF targets to the Makefile
1948      - various cleanups related to package handling
1949      - these changes should have no impact on the forward model
1950    
1951    checkpoint51l_post
1952    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1953     - faster algorithm for cal_addtime.F
1954     - higher precision arithmetic, where needed
1955     - pkg/exf *startdate variables changed from calendar date to
1956       model integration time
1957    
1958    checkpoint51l_pre
1959    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1960    o enable to apply restoring on S & T only in a latitude band.
1961    o update output (external_forcing_surf modif. change truncation errors)
1962       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1963    
1964    checkpoint51k_post
1965    o change default to: useNHMTerms=.FALSE.
1966     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1967       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1968     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1969        exp1, ideal_2D_oce
1970     - change data file of oceanic exp (leave the results unchanged for now)
1971       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1972    o set gravitySign automatically according to the vertical coordinate used
1973      (and change sign: back to "logical" value: +1 when R increases downward)
1974    o added an include barrier to the default CPP_OPTIONS.h and
1975      removed the #include "PACKAGES_CONFIG.h" from it
1976    o fix a bug in mom_fluxform (from chk51j_post)
1977    
1978    checkpoint51j_post
1979    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1980    o adjusted some flow directives (dynamics, thermodynamics)
1981    o added cubed-sphere case to test cost function
1982    o heckpoint_lev?_directives.h now include
1983      pkg-specific directives, whenever those are enabled.
1984    o Moving pkg-specific flow directives to corresponding pkg
1985      Moving pkg-specific differentiation list to corresponding pkg
1986      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1987      ---> conventions are
1988           - pkg_ad.flow
1989           - pkg_ad_diff.list
1990           - pkg_ad_check_lev?_dir.h
1991    
1992    checkpoint51i_post
1993    o merge of the branch-genmake2
1994      - knowingly breaks the older genmake
1995      - automatic generation of all ALLOW_${PKG_NAME} defines
1996      - new testreport supersedes older testscript
1997    o large number of package inclusion and header cleanups
1998    checkpoint51i_pre
1999    
2000    o new output for adjoin of global ocean vector invariant
2001    o fix for checkpoint of thermodynamic seaice and bulk_force
2002    o Steph gchem various cleanups
2003    
2004    checkpoint 51h_pre
2005    o fixed some single quotes
2006    o modify gchem pkg to be more versatile
2007    o modifications to clean up dic pkg
2008    o add pkg/cfc
2009    
2010    checkpoint51g_post
2011    o provide links for ARPACK and ADM*TLM
2012    o start removing verification/vero/
2013    o update AD-related stuff
2014      (in particular some IF-statements in model/src/ routines)
2015    o adding to verification/global_ocean.90x40x15/ adjoint of
2016      vector invariant setup
2017    
2018    checkpoint51f_post
2019    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2020    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2021      of tracer Green's fucntions for ocean inversion project.
2022    
2023    checkpoint51f_pre
2024    o Added on-the-fly spatial interpolation capability
2025        "USE_EXF_INTERPOLATION" to pkg/exf.
2026      - This is a temporary Cartesian-grid hack until
2027        the super-duper ESMF coupler becomes available.
2028      - See verification/global_with_exf/README for usage example.
2029      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2030        flags and modified pkg/seaice accordingly.
2031    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2032        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2033        non-local transport term.
2034    
2035    checkpoint51e_post
2036    o pkg/mom_vecinv:
2037      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2038      - add time-ave diagnostic of vorticity advection.
2039    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2040    o atmospheric geopotential: - include water vapor effect;
2041                                - use p^kappa in p* scaling.
2042    o land pkg: read initial state from files.
2043    o AIM : add stratospheric drag in the upper level
2044    
2045    checkpoint51d_post
2046    o change function ILNBLNK (=> last non-blank char.) to return zero
2047      (instead of the string length) when the string. char is empty
2048    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2049    o modif's to restore TAMC compatibility
2050      - avoid "_d" constructs in PARAMETER declarations
2051      - avoid interrupting lines by comment lines
2052    o Use cluster local disks for purely local I/O
2053      vs. globally visible disks needed for ctrl stuff
2054      (merged from ecco-branch)
2055      - new active_file_loc... and mdsio_..._loc routines
2056      - affected packages: autodiff, ctrl, grdchk, mdsio
2057    
2058    checkpoint51c_post
2059    o introducing integer flag debugLevel
2060      - debLevZero: suppress all output
2061      - debLevA: standard
2062      - debLevB: equivalent to current debugMode=.TRUE.
2063    o introducing pathname variable mdsioLocalDir for mdsio
2064      that can be specified at runtime
2065      (relevant for cluster I/O to local disk)
2066    `
2067    >>>checkpoint51b_post
2068    adjoint of ptracers
2069    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2070    o extended state in checkpoint_lev?, etc.
2071    o alternative ctrl/cost with tr1 or ptracer
2072    o new comlev1_bibj_ptracers
2073    o new ptracers.flow
2074    o made ptracers_forcing same as external_forcing_s
2075    o added verification for adjoint with ptracers
2076      - adm. grdchk fail so far
2077      - tlm. grdchk OK
2078      - checked tapelev/comlev recomputations: OK
2079    <<<checkpoint51b_pre
2080    
2081    checkpoint51a_post
2082    o added code for biogeochemistry package
2083      - new pkgs: dic, gchem
2084      - new subroutine in ptracers
2085    o modify code for biogeo packages
2086      - in model/src and pkg/ptracers
2087    
2088    checkpoint51
2089    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2090      - autodiff, ctrl, exf, grdchk, seaice
2091      kept separate packages
2092      - cost, ecco, obcs
2093    o updating verification/internal_wave, verification/lab_sea
2094      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2095    
2096    checkpoint50i_post
2097    o Preparing next differentiable checkpoint and sync
2098      of MAIN vs. ecco-branch
2099      - 1st step: this one is differentiable
2100      - 2nd step: next(! not this) checkpoint will have updated packages
2101                  from ecco-branch)
2102    
2103    checkpoint50h_post
2104    o new package "land": provide surface BC for AIM.
2105    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2106    o AIM: use true log-P extrapolation for near surface temp (= as in
2107        F.Molteni paper) ; update aim.5l_cs output.
2108    o New variable in PARM03 for more flexible pickups
2109    o somewhat cleaned package initialisation sequence for
2110      ctrl/ cost/ ecco/ in packages_... routines
2111    
2112    checkpoint50g_post
2113    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2114      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2115      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2116        made the default because of faster convergence than ADI
2117    
2118    checkpoint50f_post
2119    o exf totally restructured
2120      - replaced all exf_set_ routines by one generic exf_set_gen.F
2121        and made sure it's still differentiable
2122      - split exf_getffields.F into new exf_bulkformulae.F
2123      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2124      - updated adjoint/makefile and relevant verif. accordingly
2125    
2126    checkpoint50f_pre
2127     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2128          + change Evap over land. (update aim.5l_cs output)
2129     o added missing .cvsignores and made uniform across expts
2130     o changed configuration of tidal_basin_2d expt
2131     o added pkg/debug functions for tracing code in fatal crashes
2132     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2133     o new fn in pkg/monitor to stop model if solution grows too big
2134     o removed lots of single quotes from comments
2135    
2136    checkpoint50e_post
2137    o make KPP work with PTRACERS
2138     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2139       nearly a copy of kpp_transport_s
2140     - there is no analogue to SurfaceTendencyS, so I have to use
2141       gPtr(of the surface layer) instead
2142    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2143    checkpoint50e_pre
2144    
2145    checkpoint50d_post
2146    o change kpp output from multiple-record state files to single-record state
2147      files analogous to write_state.F
2148    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2149      analogous to the cg2d-related output.
2150    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2151      so that writing to internal file fn (with length 512) fails.
2152    checkpoint50d_pre
2153    
2154    checkpoint50c_post
2155    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2156    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2157    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2158    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2159    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2160    
2161    checkpoint50c_pre
2162    Merging from release1_p13:
2163    o bug fix for pkg/seaice dynamic solver
2164    o Added SEAICE_initialHEFF to pkg/seaice
2165    
2166    checkpoint50b_post
2167    o store u*,v* in gU,V instead of in guNm1,gvNm1
2168    o in order to put the momForcing out of the Adams-Bashforth:
2169      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2170      to timestep.F
2171    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2172    o re-generate output for highly sensitive test-exp:
2173       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2174    
2175    checkpoint50b_pre
2176    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2177    o corrected CPP option mismatch in exf_Bulk... functions for case
2178      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2179    
2180    checkpoint50a_post
2181    o Bug fix for merging between c50 and KPP.
2182      ikey was passed from thermodynamics to kpp_calc via
2183      common block rather than being recomputed in kpp_calc,
2184      in contradiction with new key itdkey.
2185      New key ikppkey created, and tamc.h headers updated.
2186    
2187    checkpoint50
2188    - 2nd step of merge with ecco-branch:
2189      merge changes in ecco-branch back into main trunk
2190    - bug fix in find_alpha
2191    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2192    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2193    - merged some sliced AD support routines
2194    
2195    checkpoint49
2196    merged from ecco-branch:
2197    o exf:
2198      - Enable initialisation of forcing fields to constant
2199        (runtime) values.
2200      - in exf_getffields.F
2201        Reduce i-/j-loop to interior domain, discarding overlaps.
2202        That also fixes wrong TAF-key computations for key_1, key_2
2203        with bulf formulae.
2204      - exf_init.F modify #ifdef for exf_init_evap
2205      - exf_getffieldrec.F, ctrl_getrec.F
2206        The following INT-usages are not safe:
2207          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2208          fldcount = int(fldsecs/fldperiod) + 1
2209        and were modified.
2210    o autodiff: checkpoint_lev...
2211      - updated storing for bulk formulae (some arrays were missing)
2212      - added state for seaice package
2213      - synchronized with main branch
2214    o DIVA:
2215      Modif.s in
2216      - the_main_loop.F
2217      - the_model_main.F
2218      and added cost_final_restore.F cost_final_store.F
2219      o With these changes, it is possible to fully separate
2220        the first forward run to compute the cost function (mdthe_main_loop)
2221        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2222        into separate model executions.
2223        This enables better tuning of DIVA to given queue sizes.
2224      o Loss of cost function value in consecutive DIVA runs is
2225        fixed by storing to 'costfinal' file.
2226      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2227        beginning/end of adjoint integration is accounted for.
2228      The current changes apply to TAF-1.4.26.
2229      TAF has one remaining bug, requiring one manual change
2230      (see MITgcm manual).
2231    o cal: synchronized between MAIN and ecco-branch
2232    
2233    checkpoint48i_post
2234    o Changes to restore differentiability of code w.r.t. previous tag
2235      (mostly adding new routines to make list and replacing
2236      pressure by totPhiHyd).
2237    o Updated and merged grdchk package
2238      - has both ADM and TLM checks
2239      - works for single- and multi-proc.
2240      - output cleaned
2241      - worked successfully for parallel DIVA
2242    o genmake:
2243      - Adding -platform=SP4
2244      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2245    o Modif. for DIVA:
2246      ctrl_unpack should not be called in intermediate DIVA interval.
2247      (similar thing would apply for active files such as
2248      tbar, sbar, psbar, which should not be reinitialised;
2249      only relevant for ecco-branch)
2250    
2251    checkpoint48h_post
2252    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2253    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2254    o Added SEAICE_initialHEFF to pkg/seaice
2255    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2256    
2257    checkpoint48g_post
2258    --- EOS:
2259    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2260      store total Potential in totPhyHyd for diagnostics & EOS.
2261    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2262    --- Pressure/geopotential gradient:
2263    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2264    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2265      ( changes results of global_ocean_pressure )
2266    o NLFS + z-coord.: add eta*Rho' contribution.
2267    o accurate phiHyd when using interface-W at the middle between 2 centers
2268     ( changes results of ideal_2D_oce )
2269    o includes r* 2nd term in potential gradient.
2270    
2271    checkpoint48f_post
2272    Merging from release1_p12:
2273    o Modifications for using pkg/exf with pkg/seaice
2274      - improved description of the various forcing configurations
2275      - added basic radiation bulk formulae to pkg/exf
2276      - units/sign fix for evap computation in exf_getffields.F
2277      - updated verification/global_with_exf/results/output.txt
2278    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2279      (SBO) core products, including oceanic mass, center-of-mass,
2280      angular, and bottom pressure (see pkg/sbo/README.sbo).
2281    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2282      to avoid negative values in shallow regions.
2283      - updated verification/natl_box/results/output.txt
2284      - updated verification/lab_sea/results/output.txt
2285    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2286    o Added useSingleCpuIO option (see PARAMS.h).
2287    o Updated useSingleCpuIO option in mdsio_writefield.F to
2288      work with multi-field files, e.g., for single-file pickup.
2289    o pkg/seaice:
2290      - bug fix in growth.F: QNET for no shortwave case
2291      - added HeffFile for specifying initial sea-ice thickness
2292      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2293    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2294      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2295    o pkg/seaice:
2296      - adjoint-friendly modifications
2297      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2298    
2299    checkpoint48e_post
2300    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2301    o dynamics: change definition of computational domain & adapt mom_fluxform
2302      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2303    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2304        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2305        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2306        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2307        inverted_barometer solid-body.cs-32x32x1
2308      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2309    
2310    checkpoint48d_post
2311    o in preparation for r*:
2312     a) use pre-computed gradient of hydrostatic potential:
2313        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2314     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2315        => affects results of glob_oce_pressure (different truncation error)  
2316      update output.txt of ideal_2D_oce & global_ocean_pressure
2317    
2318    checkpoint48d_pre
2319    o in preparation for r*:
2320      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2321      pass the 2 comp. of the grad. as arguments to momentum S/R.
2322      but for the moment, only used if it does not change the results.
2323    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2324    
2325    checkpoint48c_post
2326    Modifications in treatment of initial flux forcing controls
2327    to avoid extra storing of flux fields.
2328    
2329    checkpoint48c_pre
2330    o Added tidal_basin_2d experiment (currently 1D!)
2331    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2332    
2333    checkpoint48b_post
2334    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2335     (modification to pressure gradient not yet implemented)
2336    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2337      (for U & V) that are used for vertical advection of momentum.
2338    
2339    checkpoint48a_post
2340    o In preparation for r*, use temp. array to compute vertical transport
2341       in flux-form momentum pkg. => change results of few test-exp.
2342      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2343                        lab_sea, natl_box & plume_on_slope
2344    
2345    checkpoint48
2346    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2347    
2348    checkpoint47j_post
2349    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2350    o moved adexch from forward_step to addummy_in_stepping
2351    o added exch in ctrl_map_...
2352    o aveFreq.=0. at end of cost_final to avoid overwrite in
2353      reverse checkpointing loop
2354    o Yet more changes in gmredi:
2355      * adgmredi_calc_tensor
2356        avoiding all recomputation of gmredi_slope_limit
2357      * adgmredi_x/y/rtransport
2358        added flag for excessive storing to avoid recomp. of
2359        u/v/rtans, dTdx/y/z
2360        -> this is not really necessary and very memory-consuming
2361      * adgmredi_slope_psi:
2362        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2363      * gmredi_slope_limit
2364        re-activated full calculation of taperfct for case 'ac02'
2365    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2366    
2367    checkpoint47i_post
2368    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2369    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2370      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2371    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2372    o gmredi: fix few bugs.
2373    
2374    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2375    This will be a good checkpoint to plug into the ecco-branch.
2376    o few modif.'s to get latest version adjointed
2377      (mainly kick out code in ini_linear_phisurf)
2378    o modif's to run adjoint with exactConserv
2379    o case GM_BOLUS_ADVEC should be cleaned
2380      S/R gmredi_slope_psi should be cleaned
2381    o verification/carbon now has exactConserv=.TRUE.
2382    
2383    checkpoint47g_post
2384    o time-average AIM output: becomes independent from statvars time-average
2385      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2386    o After TAF bug fix:
2387      Tested adjoint of gmredi package.
2388      Tests were done with checkpoint47 rather than with latest
2389      checkpoint47f_post since the latter is broken for the adjoint
2390      verification/carbon/ contains both ADM and TLM gradient checks.
2391    Here they are, before they get changed/lost/stolen.
2392    Mostly modif.'s to fix numerical sensitivities.
2393    Gradient checks OK for
2394    - GM_taper_scheme:
2395      * clipping
2396      * ac02
2397      * linear
2398      * glw91
2399      * dm95
2400      * ldd97
2401    - GMREDI_OPTIONS:
2402      * GM_VISBECK_VARIABLE_K
2403      * GM_NON_UNITY_DIAGONAL
2404      * GM_EXTRA_DIAGONAL
2405      * GM_BOLUS_ADVEC
2406    in conjunction with data.gmredi parameters to be checked in
2407    in a few minutes under verification/carbon/code/
2408    
2409    checkpoint47f_post
2410    Merging from release1_p10:
2411    o modifications for using pkg/exf with pkg/seaice
2412      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2413        and SEAICE_EXTERNAL_FLUXES
2414      - pkg/exf CPP options EXF_READ_EVAP and
2415        EXF_NO_BULK_COMPUTATIONS
2416      - usage examples are Experiments 8 and 9 in
2417        verification/lab_sea/README
2418      - verification/lab_sea default experiment now uses
2419        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2420    
2421    checkpoint47e_post
2422    o created a tag prior to creating a branch
2423    
2424    checkpoint47d_post
2425    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2426      at the bottom boundary had an erroneous half slip boundary condition
2427    o added bottom drag and no slip boundary condition capabilities to
2428      oceanic pressure coordinates code
2429    o added new verification experiment global_ocean_pressure, this experiment is
2430      also described in the tutorial section of the manual
2431    checkpoint47d_pre
2432    
2433    checkpoint47c_post
2434    o Added a verification experiment for a global cubed-sphere ocean run
2435      -  verification/global_ocean.cubed32x32x30
2436      -  uses pkg/therm_seaice and pkg/bulk_forcing
2437    
2438    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2439    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2440      when using P-coordinate; only implemented for atmospheric config.
2441    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2442      NOTES: requires option NONLIN_FRSURF to be "#define".
2443    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2444    
2445    checkpoint47b_post
2446    Merging from release1_p9:
2447    o pkg/seaice
2448      - removed GOTO's and added taf directives
2449      - double precision constants to reduce the g77 (Linux)
2450        to F77 (SGI) differences reported in release1_p8
2451    o tools/genmake
2452      - added SGI options
2453    o verification/testscript
2454      - updated to that of checkpoint47a_post
2455    o verification/global_ocean.90x40x15/input/eedata
2456      - modified for SGI f77 compatibility
2457    o verification/lab_sea
2458      - added description of sea-ice model
2459      - added missing matlab routines
2460      - added test of thermodynamics parallelization
2461    
2462    checkpoint47a_post
2463    o new pkg: aim_v23
2464     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2465       for now, keep the same surface forcing as before.
2466     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2467     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2468     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2469    o add diagnostic of surface correction term in monitor output
2470    
2471    o bulk_force and therm_seaice
2472    - Two packages:  bulk_force (Bulk forcing)
2473      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2474    - Earlier integration from Stephaine Dutkiewicz
2475      and Patrick Heimbach.
2476    - Two ifdef statements for compile time,
2477       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2478    
2479    checkpoint47
2480    differentiable version of checkpoint46n_post
2481    o bug fix in quasihydrostaticterms
2482    o * "clean" adjoint code (in terms of extensive recomputations)
2483        can now be obtained for all GMREDI options (i.e. for
2484        - GM_VISBECK_VARIABLE_K
2485        - GM_NON_UNITY_DIAGONAL
2486        - GM_EXTRA_DIAGONAL
2487        - GM_BOLUS_ADVEC )
2488      * However, wrong gradient check problem remains unsolved.
2489      * New CPP options have been introduced for different
2490        tapering schemes
2491    o external_fields_load now part of differentiation list
2492    o pressure needs multiple storing;
2493      would be nice to have store_pressure at beginning or
2494      end of forward_step, e.g. by having phiHyd global (5-dim.)
2495      (NB: pressure is needed for certain cases in find_rho,
2496      which is also invoked through convective_adjustment).
2497    o recomputations in find_rho for cases
2498     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2499    o #define ATMOSPHERIC_LOADING should be differentiable
2500    o ini_forcing shifted to begining of initialise_varia
2501    o Incorporating QNVS line search routines into MITgcm
2502      (this is separate code, and therefore not under pkg)
2503      lsopt/, optim/
2504    o Updated verification/carbon/
2505      - #define GM_VISBECK_VARIABLE_K
2506      - GM_taper_scheme    = 'ldd97'    
2507    
2508    checkpoint46n_post
2509    Merging from release1_p8:
2510    o verification/natl_box:
2511      updating new external_fields_load routine
2512    o New package: pkg/seaice
2513      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2514      The sea-ice code is based on Hibler (1979-1980).
2515      Two sea-ice dynamic solvers, ADI and LSR, are included.
2516      In addition to computing prognostic sea-ice variables and diagnosing
2517      the forcing/external data fields that drive the ocean model,
2518      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2519      The implied surface heat flux is then stored in variable
2520      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2521      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2522      non-local transport term.  Because this call precedes model
2523      thermodynamics, temperature under sea-ice may not be "exactly" at
2524      the freezing point by the time theta is dumped or time-averaged.
2525      N.B.: fairly large differences in accuracy occur across
2526            different platforms/compilers; comparison between
2527            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2528            generated output gives:
2529       T           S           U           V
2530      C D M    c        m  s        m  s        m  s        m  s
2531      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2532      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2533      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2534    
2535      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2536    o GAD:
2537      - generated new common blocks to account for call of
2538        same gad routines with differing traceridentities
2539        (needed to modify tracerIdentity indices in GAD.h)
2540      - generated separate common blocks for case useCubedSphereExchange
2541        (Department of Futurology)
2542      - parameter lists to gmredi_?transport: added tracerIdentity
2543      - added new key indices to tamc.h
2544    o external_fields_load:
2545      - added this routine to TAF list
2546      - needed to make some common blocks global and additional storing
2547        along the same lines as exf package (checkpoint_lev?_directives.h)
2548    o exf:
2549      updated external forcing package
2550      - bug fixes carried over from ecco-branch
2551        (missing OBCS_OPTIONS.h in two routines)
2552      - enable easy to use "no forcing".
2553      - added exf I/O for atmospheric loading
2554      - added exf I/O for runoff data
2555      - transfered scaling between exf <-> MITgcm to exf namelist
2556    o Adding new verification experiment global_with_exf.
2557      This verification experiment is almost identical to the
2558      global_ocean.90x40x15 experiment, except that it uses
2559      the exf (and cal) package instead of the
2560      external_fields_load routine (cf README file).
2561    
2562    checkpoint46m_post
2563    o modified testscript to return -- when there are no lines of "%MON" output
2564    o added new flag "quasiHydrostatic" for QH mode
2565      and new routine quasihydrostaticterms()
2566    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2567      New routine: mom_u_coriolis_nh()
2568    o fixed sign of non-hydrostatic metric terms in u and v equations.
2569      Depend on correct sign of gravitySign.
2570    o added work.pc* to .cvsignore in aim directories using ifc
2571    o introduced flag for controllin non-hydrostatic metric terms
2572    o removed gravitySign from PARM04
2573    o switched to g77/ifc from pgf77 in aim experiments
2574    
2575    checkpoint46l_post
2576    o made convective adjustment work with pressure coordinates:
2577     - changed the direction of k-loop in convective_adjustment.F for the
2578       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
2579     - adjusted the reference pressure k-index in convective_adjustment.F
2580     - adjusted the convection condition in convect.F (in analogy to
2581       calc_ivdc.F)
2582     - convective_adjustment no longer computes anything on the halos
2583     - removed the warnings about negative salinity from find_rho.F and
2584       find_alpha.F; instead the new routine look_for_neg_salinity, called
2585       at the beginning of find_rho, find_alpha, and find_beta, does a
2586       check of the entire slice, if CPP-option
2587       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
2588    checkpoint46l_pre
2589    
2590    checkpoint46k_post
2591    o fixed the verification/global_ocean.90x40x15 experiment:
2592     - new bathymetry (the world according to A., JMC, and M.)
2593     - new initial fields and forcing fields (*.bin files)
2594     - new POLY3.COEFFS (for the next release one should switch to a full
2595       equation of state: JMD95P or MDJWF)
2596     - fixed several errors and redundancies in the data file
2597     - experiment uses looped cells
2598     - added matlab directory with diagnostic scripts for plotting of output
2599    
2600    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
2601     - read AIM physics parameters from a file (data.aimphys)
2602     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
2603    
2604    checkpoint46j_post
2605    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
2606    o move wVel computation at the end of the time step, in S/R integr_continuity
2607    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
2608    o update timeave pkg for wVel diagnostic.
2609    checkpoint46j_pre
2610    
2611    checkpoint46i_post
2612    o Clean up AIM package (and keep the results unchanged):
2613      include CPP_OPTION and use IMPLICT NONE in all routines ;
2614      declare all the variables _RL ; use _d 0 for all numerical constants.
2615      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
2616    
2617    checkpoint46h_post
2618    o cleaned up the use of rhoNil and rhoConst.
2619      - rhoNil should only appear in the LINEAR equation of state, everywhere
2620        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
2621        and the dynamical equations are all divided by rhoConst
2622    o introduced new parameter rhoConstFresh, a reference density of fresh
2623      water, to remove the fresh water flux's dependence on rhoNil. The default
2624      value is 999.8 kg/m^3
2625    o cleanup up external_forcing.F and external_forcing_surf.F
2626      - can now be used by both OCEANIC and OCEANICP
2627    checkpoint46h_pre
2628    
2629     Added code to convert surface volume flux (fresh water) into
2630     a mass flux when using P coordinates in the ocean (OCEANICP).
2631     Note: It assumes you have set rho0=rhoConst=density of fresh water.
2632    
2633    checkpoint46g_post
2634    o Include a new diagnostic variable phiHydLow for the ocean model
2635      - in z-coordinates, it is the bottom pressure anomaly
2636      - in p-coordinates, it is the sea surface elevation
2637      - in both cases, these variable have global drift, reflecting the mass
2638        drift in z-coordinates and the volume drift in p-coordinates
2639      - included time averaging for phiHydLow, be aware of the drift!
2640    o depth-dependent computation of Bo_surf for pressure coordinates
2641      in the ocean (buoyancyRelation='OCEANICP')
2642      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
2643        Theta, Salinity, and Pressure in the parameter list. This routine is
2644        presently contained in find_rho.F. This routine does not give the
2645        correct density for 'POLY3', which would be a z-dependent reference
2646        density.
2647    o cleaned up find_rho
2648      - removed obsolete 'eqn' from the parameter list.
2649    o added two new verification experiments: gop and goz
2650      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
2651    checkpoint46g_pre
2652    
2653    checkpoint46f_post
2654    o Enable tangent linear (forward mode) gradient checks:
2655      - extended active file handling to g_... files
2656      - added TANGENT_SIMULATION to theSimulationMode
2657      - extended grdchk package accordingly
2658    o added tangent linear setup in verification/carbon/code_ftl
2659    o added adjoint setup in verification/front_relax/code_ad
2660    
2661    checkpoint46e_post
2662    o Added new equation of state -> MDJWF
2663      - EOS of McDougall et al., 2002, JAOT, submitted
2664      - caveat: the equation of state is only valid for a smaller (more
2665        realistic?) range of values than JMD95P/Z and UNESCO
2666      - added masks to the calculation of pressure in store_pressure
2667      - added more check values for density in check_eos (ini_eos.F), some of
2668        the old check values are out of the range of the MDJWF-eos, so don't
2669        expect perfect matches for those
2670    checkpoint46e_pre
2671    
2672    checkpoint46d_post
2673    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
2674      'OCEANICP', also initialised field pressure correctly in ini_eos in the
2675      case of pressure coordinates. eosType='JMD95Z' in
2676      combination with buoyancyRelation='OCEANICP' now causes an error.
2677    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2678      in find_alpha/beta.
2679    checkpoint46d_pre
2680    
2681    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2682      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
2683    
2684    checkpoint46c_post
2685    o Changes necessary for ocean in p-coordinates
2686     -  Added new buoyancy relation = 'OCEANICP'
2687     -  Added new parameters = gravitySign (this used to be contained inside
2688        the factor dRdZ which I added when we first switched to R coordinates).
2689     X GM/Redi is not compatible (yet)
2690     X bottom drag and no-slip need to be debugged.
2691    checkpoint46c_pre
2692    
2693    checkpoint46b_post
2694    o Added new equation of state -> JMD95Z and JMD95P
2695      - EOS of Jackett and McDougall, 1995, JAOT
2696      - moved all EOS parameters into EOS.h
2697      - new routines ini_eos.F, store_pressure.F
2698    o Added UNESCO EOS, but not recommended because it requires
2699      in-situ temperature (see JMD95)
2700    o Modified formatting for knudsen2.f in utils/knudsen2 and added
2701      unesco.f to be used with POLY3
2702    checkpoint46b_pre
2703    
2704    checkpoint46a_post
2705    o Added (atmospheric) pressure loading
2706      - new field in FFIELDS.h, etc...
2707      - new cpp flag ATMOSPHERIC_LOADING
2708    o Changed hFacC to _hFacC in calc_phi_hyd.F
2709    o Added SHORTWAVE_HEATING to some files for consistency
2710    checkpoint46a_pre
2711    
2712    checkpoint46
2713    further merges from release1_p5
2714    o new ctrl package
2715      - adopted from ECCO environment to enable optimization
2716      - added Eliassen Palm fluxes to controls
2717    o added Eliassen Palm flux controls to gradient check package
2718    o cost package
2719      - Compatible with new ctrl package
2720      - added Eliassen Palm cost hooks
2721      - modif's of existing cost functions
2722    o Adjoint-related bug fixes in kpp:
2723      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
2724      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
2725    o autodiff package
2726      - flow directives:
2727        + new for S/R do_the_model_io
2728        + enhanced for S/R checkpoint
2729        + new gmredi.flow
2730      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
2731        disable adcommon.h/g_common.h by default.
2732      - fixed problem for adjoint of global_max
2733    o modified verification/carbon/
2734    o New setup for adjoint of global_ocean
2735    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
2736    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
2737    o incorporated hooks for sponge layer code (external_forcing.F)
2738    
2739    checkpoint45d_post
2740    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
2741    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
2742      (affects plume_on_slope "cg2d" output)
2743    o add new parameter deltaTfreesurf for free-surface time stepping
2744    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
2745    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
2746    o change phiMin in exp1 (to agree with documentation)
2747    o add new flags:
2748     - T,S forcing inside/outside Adams-Bashforth
2749     - turn off temp,salt advection and/or forcing
2750     - for each tracer, define internal flag for multiDimAdvection & A-B
2751    o monitor: change definition of KE to check conservation of Energy
2752    
2753    checkpoint45c_post
2754    o Removed f90 comments ("!")
2755    o Modified initialisations to enable exf package for MITgcm
2756      (without invoking ECCO_PACKAGE).
2757    o modifications to gradient check package (Martin Losch)
2758      - enable centered differences
2759      - modified format of standard output
2760    
2761    checkpoint45b_post
2762    o cleaned exchange calls in cg2d
2763    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
2764    o included CPP option SINGLE_LAYER_MODE in thermodynamics
2765      to configure barotropic setup (Martin Losch)
2766    o moved some initialisations within bi,bj loop in dynamics
2767      (TAF flow dependency)
2768    o in initialise_varia, moved call packages_init_variables
2769      before convective_adjustment_init
2770      (corresponding adjustment of TAF tape initialisation).
2771    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
2772    
2773    checkpoint45a_post
2774    o compute Rho over the whole domain (extend iMin,jMin indices)
2775    o specific exchange for X-slice domain (case Ny=1)
2776  o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code  o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
2777  o solve_for_pressure : set cg2d_x to zero where OBCS are applied  o solve_for_pressure : set cg2d_x to zero where OBCS are applied
2778    

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