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revision 1.26 by adcroft, Mon Apr 10 14:41:52 2000 UTC revision 1.759 by mlosch, Thu Dec 21 10:50:56 2006 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/seaice: more cleaning up of seaice_growth, added many comments
8    o pkg/exf: put runoff0 and runoff into the appropriate common block
9    o fix multi-category seaice:
10     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
11       SEAICE_MULTICATEGORY
12     - fix short wave heat flux
13    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
14       and allow to use EVP solver. Change forward lab_sea: test both EVP
15       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
16    o Initial check-in of lab_sea adjoint
17      (very similar to natl_box_adjoint/code_seaice)
18      * used C-grid and EVP solver
19      * used KPP, GM/Redi
20      * uses inAdExact=.TRUE.
21      * gradient checks fail for both ADM and TLM
22        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
23        f.d. gradients actually seem more problematic than ADM, TLM gradients;
24        issue is related to forward mismatch between g77 an ifort
25    o pkg/seaice: overhaul of thermodynamics
26     - growth.F and groatb.F are replaced by new routine seaice_growth.F
27     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
28     - move a few global fields out of SEAICE.h into seaice_growth.F and
29       make them 2D (FICE/QNETO/ ...)
30     - remove FO (it is the same as QNETO)
31     - introduce a few local fields to avoid modifying external fields such
32       as atemp, etc.
33    
34    checkpoint58s_post
35    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
36      changed exf_set_gen.F so that
37        genperiod=0 means input file is one time-constant field and
38        genperiod=-12 means input file contains 12 monthly means
39    o CG2D: use pre-computed solver main-diagonal (stored in common block);
40      this affects truncation error ; generate new output file for exp. which
41      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
42        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
43        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
44        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
45        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
46        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
47    o start implementation of deep-atmosphere and anelastic formulation
48    o verification: remove 2nd copy of input files and use script "prepare_run"
49      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
50    o mom_common/vecinv/fluxform: fix a few initialisation isssues
51    o profiles: fix for multithreaded case
52    
53    o diagnostics: rename few diags:
54      s/'PRESSURE'/'RCENTER '/g
55      s/'TICE    '/'oceFreez'/g
56      s/'TAUX    '/'oceTAUX '/g
57      s/'TAUY    '/'oceTAUY '/g
58      s/'SWFLUX  '/'oceQsw  '/g
59      s/DIFx/DFxE/g
60      s/DIFy/DFyE/g
61      and add few ocean-forcing diagnostics:
62      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
63    o modifications to pkg/seaice/growth.F and budget.F, which change results of
64      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
65      as actual snow thickness.  It now refers everywhere to effective snow
66      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
67    
68    checkpoint58r_post
69    o modifications to pkg/seaice/growth.F, which change results of
70      lab_sea experiment: fixes pertain to melting snow over open water, to
71      masking EVAP under sea ice, and to using the correct AREA variable for
72      computations of EVAP, PRECIP, HSNOW, and GHEFF
73    o add ability to read bathy, salt, and theta using MNC (off by def)
74    o add flooding algorithm and advection of HSNOW for pkg/seaice;
75      both are turned off by default and do no change any results
76    o seaice advection with pkg/thsice: a step toward the use of non-linear
77      advection scheme, but #ifdef or commented out for now (requires more EXCH).
78    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
79      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
80      in natl_box (affects results @ truncation level: update output.txt)
81    o multi-threading and IO:
82      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
83      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
84        (needed to work with SingleCpuIO): tested in all verif. exp.
85    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
86      affects the results (but none of the verification test uses this scheme).
87    o Adding some pkg/diagnostics capability to pkg/seaice
88      (will certainly be subject to changes)
89    o ctrl: adding new control variables:
90      lwflux, lwdown, evap, snowprecip, apressure, runoff
91    
92    checkpoint58q_post
93    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
94      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
95      high_res_cube configuration by 4% on Columbia.
96    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
97      add (in global_with_exf/code) a version of EXF_INTERP_READ without
98      dynamical allocation (seems to work in multi-threaded).
99    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
100      single CPU io) so that TAF does not have to see EESUPPORT.h
101    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
102    
103    checkpoint58p_post
104    o obcs: stop if obcs is used with useCDscheme = .true.
105    o shelfice:
106     - fix a sign error so that no slip at shelfice interface works
107     - remove stop for combination non-hydrostatic code and shelfice. That does
108       not mean, that the results are correct, but at least they are numerically
109       stable
110    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
111    o added adjoint exch routined for all exch*3d* routines
112      and updated flow directives
113    
114    checkpoint58o_post
115    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
116      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
117    o change controling S/R for writing pickup file (new S/R do_write_pickup)
118      and clean-up reading/writing of pickup files.
119    o fix local version of read/write pickup (NH part) in rotating_tank/code
120    o simplify EXCH interface:
121     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
122     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
123    o added the regrid package
124    o shelfice:
125     - add a simple boundary layer scheme to reduce noise
126     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
127    
128    checkpoint58n_post
129    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
130       local variable (not in common block).
131    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
132      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
133      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
134        to work with SingleCpuIO.
135    o add "_d 0" to real constant of pkg/cfc subroutines ;
136       update exp. cfc_exemple & tutorial_cfc_offline output files.
137    o multi-threading and IO:
138      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
139        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
140      - barrier before and after reading.
141      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
142      - avoid using MDS_WRITELOCAL for LAND pkg output.
143      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
144        common-block variables ; Allows multi-threading with master-thread IO.
145    o change default MAX_NO_THREADS from 32 to 4 ;
146      and stop cleanly when MAX_NO_THREADS is too small.
147    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
148    
149    checkpoint58m_post
150    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
151       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
152    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
153       keep global_ocean.90x40x15 (for AD testing) with former secondary test
154       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
155    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
156        add MITgcm_tutorials (= code + all the tutorials)
157    o ecco, option to compute cost for total ssh (mean+anom)
158    o consistent with addition of ptracer and ssh in pkg/profiles
159    o profiles: adding ptracer and ssh
160    o testreport: change multi-test output-file name
161      (from output.txt.{name} to output.{name}.txt)
162    o profiles: now ok for mutli-tiles case
163    o seaice: add 4 parameters for different advection schemes for area,
164      (effective) seaice thickness, enthalphy, and snow height. Their default
165      is the standard parameter SEAICEadvScheme
166    o calc_gw:
167     - add cosFacU in zonal viscous flux (harmonic.visc.).
168     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
169       of tutorial_plume_on_slope.
170    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
171    o calc_gw: true flux-form, account for horizontal grid spacing.
172      update rotating_tank results, but not plume_on_slope (affected at
173      truncation level, 11 digits).
174    
175    checkpoint58l_post
176    o calc_gw:
177     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
178     - remove side-drag for now (need to fix it); update plume_on_slope results.
179     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
180    o commit code to make SST/SSS weights spatially variable
181      (based on either variable in-situ or variable initial T/S weights)
182    o pkg/ecco:
183      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
184        now based on horizontally varying weights wthetaLev, wsaltLev
185      * cost_averagesflags now returns year indices in addition to day, month
186      * sflux balance is performed on annual basis
187        (sflxumm, sfluxmm2, bal_sfluxmm)
188      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
189        including separate counting and multipliers
190    o pkg/rbcs
191      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
192    
193    checkpoint58k_post
194    o testreport:
195     - always build in dir. "build" (if not there, mkdir build instead of building
196       & running in input)
197     - run in dir run (if it exists), in build otherwise.
198     - call prepare_run (if input/prepare_run exists)
199     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
200    o pkg/exf modifications to interpolation and rotation routines for more
201       reasonable treatment of North Pole singularity: for tracers North Pole
202       value is set to northernmost zonal-mean value, for zonal velocity it is
203       set to zero, and for meridional velocity it is set to northernmost value.
204    o pkg/exf/exf_check_range.F
205     - add tile index to diagnostics and move stop statement to the very
206       end of the routine.
207    o pkg/diagnostics: (diagnostics_main_init.F)
208      define title of isomorphic variables according to the current config.
209    o pkg/thsice with pkg/seaice dynamics:
210    - fix domain of computation (interior only, required for exf) and do exchanges
211    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
212    o towards a standard way of dealing with multi-threading in MONITOR
213      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
214    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
215       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
216    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
217    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
218    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
219       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
220    o tracer advection:
221     - clean-up and simplify calc_common_factors.F
222     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
223       advection subroutine (but still not used within DST advection S/R)
224    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
225    
226    checkpoint58j_post
227    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
228      from file (collects calls previously in FORWARD_STEP)
229    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
230    o adjoint store dir. adjusted accordingly
231    o genmake2
232      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
233    
234    checkpoint58i_post
235    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
236      on wind stress (SEAICEstressFactor defaults to 1.)
237    o Total number of Timers is finite (<=40): comment out 2 non-essential one
238      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
239    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
240      on CS-grid: no longer loosing mass.
241    o exf & curvilinear-grid: no longer modify longitude xC & xG.
242    o pkg/ggl90: fix sloppy output and fix a bug
243    o pkg/seaice: added SEAICEuseEVPpickup parameter
244      - Set to false in order to start EVP solver with
245        non-EVP pickup files when using SEAICEuseEVP
246      - fix sign error in diffusion in seaice_calc_rhs
247    
248    checkpoint58h_post
249    * Modifications for bottom topography control
250      o replace hFacC by _hFacC at various places
251      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
252      o add non-self-adjoint cg2d_nsa
253      o update autodiff support routines
254      o re-initialise hfac after ctrl_depth_ini
255      o works for 5x5 box, doesnt work for global_ocean.90x40x15
256    * Adding verification for 5x5 box (4-layer) bottom topography control
257    
258    checkpoint58g_post
259    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
260       used for mean seasonal cycle, mean diurnal cycle); add an example
261       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
262    o pkg/ggl90:
263      - add parameter (minimum surface kinetic energy)
264      - fix bug (avoiding division by zero)
265    o couple pkg/thsice to pkg/seaice:
266      - modify advection in seaice to accomodate new scalar fields to be advected
267      - only muliDimAdection scheme work with seaice/thsice
268      - mapping of thsice-variables to seaice-variables, back and forth
269      - does not break the verification experiments, but does not give the
270        desired results either
271    o pkg/seaice
272      - make (default) second order advection a bit less confusing?
273    
274    checkpoint58f_post
275    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
276      to pkg/seaice):
277      - new routines thsice_map_exf and thsice_get_exf provide the interface
278      - add an additional formal parameter to thsice_solve4temp
279    o pkg/exf:
280      - add new fields wspeed, snowprecip (to be able to couple to thsice)
281      - correct Stefan-Boltzmann constant
282      - new parameter for longwave surface emittance
283      - separate some stuff from exf_bulkformulae into new routines  
284        exf_radiation, exf_wind
285      - add new parameters and constants: longwave emissivity for ocean, ice
286        and snow, evaporation parameters over ice
287      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
288        either wind from stress or stress from wind
289    o pkg/thSIce:
290    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
291    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
292       and THSICE_CALC_THICKN
293    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
294    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
295      to make debugging easier.
296    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
297    o pkg/bulk_force:
298      - clean-up comments and parameters ;
299      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
300    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
301      generate new output for test-experiment: aim.5l_cs.thSI
302    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
303      testreport accordingly
304    
305    checkpoint58e_post
306    o SEAICE_CGRID adjoint done
307    o R_STAR adjoint implemented.
308      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
309      * need to sort out init. of h0facc, etc.
310    o Make pkg/profile fully independent of ecco,cost, etc. stuff
311      to be able to use it in pure forward.
312    
313    checkpoint58d_post
314    o upgrade simple test-experiment to tutorial example:
315     step.1: duplicate the experiment and (step.2) will remove the old copy.
316      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
317      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
318      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
319      tutorial_global_oce_biogeo    <- copy of dic_example
320      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
321      tutorial_plume_on_slope       <- copy of plume_on_slope
322      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
323      tutorial_global_oce_optim     <- empty for now (David ?)
324      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
325     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
326    o correct a sign problem in cost_scat.F
327    o obcs and ptracers: fix boundary conditions for advections schemes
328      with larger stencil
329    o thsice adjoint: start
330    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
331      completeness
332    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
333      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
334    o ptracers adjoint:
335      * avoid extensive recomputatations
336      * fix missing re-init. of gptr (missed by TAF)
337    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
338      me to turn off the excessive output to STDOUT that this package produces
339    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
340      and add those terms in Vector-Invariant formulation.
341    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
342      if the control period (xx_hfluxperiod etc) is 0
343    o in profiles pkg, clean routines and fix details
344    o in ecco pkg, reading ssh data:
345      fix problem in case the model does not start at iter0=0
346    o fix mnc-pickup/restart for ptracers
347    o new package prifiles:
348      code to compute profile-based cost by Gael Forget
349      (modifs in ecco, ctrl, autodiff)
350    o Benign bug fix in initialization (spotted by M. Mazloff) of
351      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
352    
353    checkpoint58c_post
354    o adjoint: finish NLFS adjoint and provide reference output in
355      verification/global_ocean.90x40x15/results_ad_nlfs
356    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
357      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
358      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
359      with SEAICE_CGRID defined.
360    o move calendarDumps from "data" to "data.cal" and clean-up the code
361      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
362    o add useEXF & useCAL flags (for now, set in hard-coded way)
363    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
364      (were missing in NH mode, and wrong in quasihydrostatic mode).
365      waiting for Chris updated version of calc_gw to add those CALLs.
366    o fix bug in quasihydrostatic S/R ;
367      add a test for this option: global_ocean.90x40x15.qshyd
368    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
369      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
370    o add on/off flag useOffLine for package OFFLINE
371    o seaice:
372      - modify advection so that it works also on the C-grid
373      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
374        problem in multi-tile runs with C-grid
375      - add flags for clipping ice velocities and/or masking solver forcing
376      - fix drag (ocean on ice) formulation and a bug that caused noise in the
377        C-grid solver
378      - added a few comments to seaice_diffusion.F
379      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
380        are now exclusive)
381      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
382        required re-ordering the code a little:
383       + make DAIRN global variable (defined in SEAICE)
384       + move computation of the viscosities eta and zeta into a new separate
385         routine (because I need to recompute them in seaice_ocean_stress.F)
386    
387    checkpoint58b_post
388    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
389      update output.txt of exp. aim.5l_cs.thSI
390    o various mnc cleanups and improvements:
391      + shrink lookup tables by factor of ~4
392      + better error reporting when running out of lookup space
393      + able to handle longer path/file names (up to 500 chars)
394    o adjoint:
395      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
396      - TBD: "hidden" mom_vecinv recomp. in dynamics
397    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
398     (allow to differentiate between forcing components using new integer flags:
399      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
400     and add new flag to put Dissipation tendency out of Adams-Bashforth.
401    o ecco
402      - enable trend removal from SSH anomaly obs.
403    o adjoint
404      - a fix for PmEpR when #undef EXACT_CONSERV
405      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
406      - try to fix "hidden" recomp. in forward_step for NLFS
407        (NLFS seems broken sometimes after I checked it in)
408    o seaice:
409     - add c-grid version of the dynamic solver:
410       + three new routines that are the c-grid substitute lsr, dynsolver
411         and ostres
412       + put a few fields that were local to dynsolver into global common
413         blocks, so that I can move the computation of stresses etc into
414         seaice_lsr (saves coding but may break the adjoint).
415     - replace more hardwired parameters by runtime parameters
416     - add ice masks that mask the rhs of the implicit solvers where there
417       is no ice (commented out in seaice_dynsolver, because i am not sure
418       if this works properly), eventually this should replace the clipping
419       of ice velocities in seaice_dynsolver to +/-40cm/s.
420    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
421      include it only where its needed
422    o move balancing of fluxes before the call of external_forcing_surf
423    o seaice:
424      - correct units of turning angles (now they are really in degrees)
425      - move computation of GWATX/Y out of main routine into dynsolver
426      - initialize GWATX/Y in seaice_init
427    o Apply mask on Fresh-Water flux (needed for SSH forcing).
428      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
429    o seaice: add runtime flags for turning angles (default to zero)
430    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
431      and trend from exf forcing and ctrl control adjustments
432    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
433      (since checkpoint57x_post)
434    o change the default rotation period to 86164.s = the Earth rotation
435    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
436      and based on a reference stratification. Tested within hs94.cs-32x32x5.
437    o seaice advection: add code for choosing between the default (2nd order
438      central differences) and multiDim advection schemes provided by
439      pkg/generic_advdiff
440    o seaice:
441      - removed all references to SEAICE_GRID.h fields from
442        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
443        (cubed-sphere configuration will change a little)
444      - grid computations in seaice_init are obsolete now.
445      - cleaned up code a little so that is easier to read (hopefully).
446      - added new (better?) discretizations of default advection and diffusion
447        (turn on with SEAICEuseFluxForm)
448      - replace 1 in 3d global fields by kSurface in growth.F
449      
450    checkpoint58a_post
451    o seaice:
452      - bug fix in advect.F
453    o shelfice:
454      - separate shelfice load anomaly from pload (breaks with time
455        dependent forcing), => introduce constant field shelficeLoadAnomaly.
456        Its default is 0., but it may be computed more cleverly from (unknown)
457        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
458        done offline. A good approximation of the pressure load anomaly is
459        necessary to avoid large initial adjustment processes underneath
460        deep-reaching shelfice.
461      - small fix in ISOMIP shelfice_thermodynamics
462      - add more sophisticated thermodynamics of Hellmer (1989), this is
463        now the default
464      - give a few constants more intuitive names
465    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
466      if bulk formulae are used in long integration (especially EmPmR). Turn
467      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
468      if balancePrintMean, the imbalance that is substracted is printed to
469      STDOUT.
470    o fix bug (typo) in obcs_apply_eta.F
471    o add a new package shelfice which enables us to model the circulation
472      underneath shelf-ice with draughts of hundreds of meters.
473     - works
474     - to do: + include improved thermodynamics
475              + check whether kSurfC (from model/inc/SURFACE.h) can be used
476                instead of new field kTopC
477              + can we use topoFile, Ro_surf and existing code in ini_depth.F
478                instead of new field R_shelfIce and new code in ini_depth.F
479                and ini_mask_etc.F?
480              + adjust vertical mixing schemes?
481    o seaice pkg:
482     - add a cpp-flag to include a simple formula for a salinity dependent
483       freezing point of sea water at the surface
484     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
485       meridional stresses are now different (and hopefully correct)
486    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
487       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
488       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
489    o pkg/diagnostics: add options and parameters for regional-statistics
490       diagnostics ; define regions by reading a region-mask from a file
491       (might add other options later)
492    o pkg/bulk_force:
493     - add option and parameters to use AIM surface-flux formulae.
494     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
495       others forcing fields (defined in PARM05, parameter file "data") are loaded
496       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
497     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
498     - use the right EXCH call for uwind,vwind (to work on CS-grid).
499     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
500       and parameters (note: calcWindStress replaces .NOT.readwindstress).
501     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
502    
503    checkpoint58
504    o add "--embed-source" option to genmake2 which, when the supporting
505      tools can be compiled (as determined by genmake2) will turn on the
506      embed_files package which then embeds the entire MITgcm source code
507      (*.[fFhc] + Makefile) used for the build within the executable
508      - requested by CNH but off by default
509      - adds a paltry <9MB to the mitgcmuv executable in most cases
510      - only writes the output when useEMBEDSRC in eedata is true
511    o clean up 3-dim. relaxation codes:
512      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
513      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
514      * Thanks to Tom Haine for testing!
515    
516    checkpoint57z_post
517    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
518      affects output (@ truncation level) of exp. plume_on_slope ; updated.
519    o fix the pickup behavior for obcs in combination with ptracers
520    o fix a bug in ptracers_external_fields_load
521    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
522      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
523    o transfered surface NH pressure to eta field (if exactConserv).
524    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
525         and update lab_sea output.txt file.
526    o completing 3-dim. relaxation code: additional term
527         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
528      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
529      * At compile time, in "EXF_OPTIONS.h" set
530          #define  ALLOW_CLIMTEMP_RELAXATION
531          #define  ALLOW_CLIMSALT_RELAXATION
532      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
533          tauThetaClimRelax3Dim = 15552000.0,
534          tauSaltClimRelax3Dim  = 15552000.0,
535      * 3 cases:
536          1) Use a constant-in-time 3-dim. field
537          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
538          3) Real-time relax. to time-evolving prescribed field
539    o Adding Laplacian-type smoothness constraint on
540      initial and boundary (forcing) controls (ic, bc)
541      * enable at compile-time via
542        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
543      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
544      * Absolute scale somewhat unclear so far
545      * no area weighting was included since no other cost term does so far
546    
547    checkpoint57y_post
548    First step for a NLFS adjoint
549    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
550    o new init. routines for calc_r_star, calc_surf_dr
551    o still need to deal with ini_masks_etc
552    o testreport seemed happy
553    checkpoint57y_pre
554    
555    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
556    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
557    o add new offset feature to offline pkg (plus minor cleanup)
558    o cfc fixes for final year of integration
559    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
560      be in GCHEM_OPTIONS).
561    
562    checkpoint57x_post
563    o fix testreport Pb in multiple test experiment.
564    o cleanup our namelist syntax in verification:
565      - make it more F95 standards compliant (some work still needed)
566      - allows the vast majority of our tests to work with gfortran
567    o Non-Hydrostatic:
568     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
569     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
570    o Allow to apply AB on T,S rather than on AB(gT,gS):
571     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
572     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
573       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
574     - need a "clever" read_pickup to restart from the other AB formulation
575    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
576    o remove some unused variables (reduces number of compiler warnings)
577    o adjoint
578      * Disable useVariableViscosity for adjoint for time being
579        (there are a number of extensive recomputations)
580      * Initialize certain variables needed for adjoint
581    
582    checkpoint57w_post
583    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
584                 fix the singleCpuIO RS version of MDSWRITEFIELD
585       and add a WARNING if using globalFiles=T with multi-processors.
586    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
587      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
588    o tracer advection scheme:
589      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
590       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
591       was not very convenient).
592      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
593       (further tests needed for the implicit DST & Flux-Limiter schemes).
594    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
595      and sRef for convenience, handy, when you want to initialize
596      ptracers in a large domain with a constant non-zero value. Also,
597      untangle ptracers_init.F a little.
598    
599    checkpoint57v_post
600    o change dome exp. to use variable viscosity in side-drag terms.
601    o remove all the files from the cfc_offline test since they are now
602      incorporated into tutorial_cfc_offline which has been producing
603      identical results for a few days of testing
604    o add new parameter: sideDragFactor to enable half-slip-side BC
605      and change side-drag S/R to use viscosity from mom_calc_visc
606      (can switch back by setting sideDragFactor=0.); affects results at
607      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
608       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
609    o vorticity & strain are now computed without masking, to account for
610      no-slip-side BC in variable viscosity calculation ; mask is applied
611      anyway later on, before computing advection/coriolis terms.
612    o modify exp4 to test new obcs support for reading from external files
613      and for passive tracers
614    o fix behavior of ptracers_monitor when monitor output is written to a
615      netcdf-file; still not independent of monitor.F (writes in the same
616      file).
617    o change default value of tRef (put a uniform, meaningful value for ocean
618      & atmos) and initialize sRef (was missing, as Martin mentioned).
619    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
620      to be proportional to enstrophy dissipation length.  Thus,
621       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
622      This is now consistent with Smagorinsky and with the manual.
623    
624    checkpoint57u_post
625    o OBCS and PTRACERS: add open boundary support for passive tracers
626      - either use homogenous (pseudo) v.Neumann conditions or prescribe
627        OB-values from file; this is not different from the way theta and salinity
628        are treated
629      - however, Orlanski-radiation conditions are not supported, and the model
630        will stop if you use pTracers and Orlanski at the same time.
631      - beefed up the rountine obcs_external_fields_load: now only those open
632        boundary values are overwritten with values from files for which there
633        are really files, otherwise the OB-fields remain untouched. This makes
634        it possible to use different OBs at different ends of the domain (as
635        with EXF)
636    o reduce number of exch calls in shap_filt (s2).
637    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
638      truncation level) 4/5 MLAdjust test results (11&12 digits match).
639    
640    checkpoint57t_post
641    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
642    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
643      same truncation, independent of the face number: affects affects several
644      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
645    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
646      note that biharmonic viscosity + no-slip was not tested in any experiment.
647    o fix bug in non-linear free-surf side-drag ; generate new output for
648      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
649    o make mnc honor the writeBinaryPrec flag for most kinds of output
650    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
651    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
652      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
653    o add brackets in multi-terms sum to get same truncation, independent of
654      the face number (manage to get exactly same value of gU,gV at the cs-edge)
655      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
656    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
657      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
658      a maximum grid-scale Reynolds number.  Also, changes all length calculations
659      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
660      Suggested values of viscosity parameters found in mom_calc_visc.
661      Many new viscosity diagnostics available.
662    
663    checkpoint57s_post
664    o Add clearing-house for viscosity calculations, mom_calc_visc and
665      correct numerous bugs in LeithD and Smagorinsky discretizations.  
666      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
667      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
668      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
669      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
670      The Strain-Tension form is now called with useStrainTensonVisc=.true.
671      ViscAhStrain and viscAhTension are now retired.
672    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
673    o In response to JMC's bug report, genmake2 now ignores any soft-links
674      that it finds in the *current* directory when searching for files.
675      Soft-links found in any other source directories will still work as
676      they did before.
677    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
678      a C routine to unlimit the stack size
679    o mnc-ify pkg/aim snapshot vars
680    o mnc-ify pkg/land as requested by Daniel
681    o various changes to mnc including:
682      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
683      - output can now be grouped so that all files within a group
684          change the ITER portion of their names in lock-step together
685      - can now read ("global") PER-FACE (in addition to PER-TILE) files
686          and works with both EXCH1 and EXCH2 (but needs more testing)
687      - writing works for all verification test cases w/ g77 on Linux
688    
689    checkpoint57r_post
690    o make MNC variable initialization happen earlier
691    o add diagnostics for (almost) each term of the momentum Eq.
692    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
693    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
694    o remove MINIMAL_TAVE_OUTPUT option ;
695      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
696    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
697      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
698    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
699    o add time-dependent SST, SSS control
700    o cost terms in ecco/ modularized (new cost_generic.F)
701    o cost_averages routines are modularized (new cost_averagesgeneric.F)
702    o new infrastructure for seaice model vs. obs misfits in seaice/
703      * driver from the_main_loop.F is seaice_cost_driver.F
704      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
705      * gradient check in Exp. 6a of natl_box_adjoint/
706    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
707      (see README file)
708    
709    checkpoint57q_post
710    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
711    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
712      - bug was reported by Jean-Michel and Ian Fenty
713    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
714      update exp. cpl_aim+ocn output.
715    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
716      Needed for high-res. runs with large global files
717      to be able to limit tapelev size
718    o Changed some tests for adjoint:
719      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
720      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
721      * global_ocean.90x40x15/ back to default 3-level checkpointing
722    o Modifications to enable scripted COMMON to MODULE conversion
723      * verification/OpenAD/code/ has necessary scripts and description;
724      * converts, compiles and runs successfully;
725    
726    checkpoint57p_post
727    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
728    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
729      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
730    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
731    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
732      (was already the case for dissipation with mom_vecinv,
733       and also the case for grad.PhiHyd when staggered-timeStep)
734      This will allow to put dissipation out-off the AB time-stepping.
735     Unfortunately, affects truncation error. Update output of exp. that "fails"
736      (cg2d matching number) and leave the others for later: front_relax(10),
737      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
738      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
739    
740    checkpoint57o_post
741    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
742      (2) its ready to be documented during the 20050801 DocFest
743    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
744      for ideal_2D_oce and lab_sea on linux_ia32_g77
745    o set to #undef CTRL_SET_OLD_MAXCVARS_30
746      in global1x1_tot/code_seaice_adj to access indices 32, 33
747      (worth another tag)
748    
749    checkpoint57n_post
750    o adding precip control xx_precip 32
751    o adding swflux control xx_swflux 33
752    o Replacing 10 forcing penalty cost routines by 1 generic.
753    o Implementing partitioning in time-mean and variable adjustment
754      for atmos. state.
755    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
756    o in natl_box_adjoint:
757      * updated exp 1 to 10
758        (but does not have time-mean vs. variable split results yet)
759    o updated global1x1/*_seaice_adj/
760      to incorporate latest changes
761    o enable useSingleCpuIO for mdsio vector routines
762      (applies in particular to tapelev I/O)
763    o removed inefficient K-loop in all active_file*control*.F
764    
765    checkpoint57m_post
766    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
767      and advect_cs (use EXCH-2 and standard cs-32 grid files).
768    o pkg/exch2: filling of face-corner halo regions is optional
769      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
770    
771    checkpoint57l_post
772     tag before updating tutorials (pre-release-2)
773    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
774       for output and interpolation of input fields onto model grid)
775    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
776       Affects results of exp. rotating_tank ; update output.txt.
777    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
778          and taking the square quantity and/or using a fraction-weight field.
779    o fix aim_diagnostics_init.F mate numbers.
780    o add mnc output capability to diagnostics/diagstat and update
781      our cvsignore files for the ACSII output generated
782    
783    checkpoint57k_post
784    o lab_sea now uses diagnostics package and provides a suite of
785      new EXF diagnostics output.
786    
787    checkpoint57j_post
788    o exf
789      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
790        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
791        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
792      * extended diagnostics output
793        - now includes all EXF variables
794        - hs, hl moved to common block
795        - separate S/R for diagnostics, called after ctrl vector is added
796        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
797        - EXFqnet contains true Qnet (i.e. includes qsw)
798      * updated verif. lab_sea, global_with_exf
799      * Rearranging hflux (exf_mapfields -> exf_getforcing)
800        to ensure that diagnostics sees a true EXFqnet
801    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
802    o diagnostics pkg: change pointers so that 1 diagnostic can be used
803      several times with different frequencies.
804    o mnc-ify the thsice package as requested by Daniel Enderton
805      - the monitor--MNC output needs work
806      - many attributes need to be added (most are currently blank)
807    o mnc-ify theaim_v23 package as requested by Daniel Enderton
808      - many attributes need to be added (most are currently blank)
809    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
810    o add Sadourny like discretization to the 4th.O vorticity advection scheme
811    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
812      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
813         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
814    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
815     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
816    
817    checkpoint57i_post
818    o Diagnostics package was changed: diagnostic allocation is now deactivated
819      by setting an empty file name in the namelist (used to be by setting 0 frequency)
820    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
821      add 1rst Order upwind vertical Shear.
822    o add a quick fix for A/B checkpointing in OFFLINE mode
823    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
824      end-run around the C/Fortran linking horror in eesup/src/timers.F
825    o added pkg/runclock: allows user to terminate run based on wall clock
826    o added non-hydrostatic scaling parameter: nh_am2
827    o pkg/my82: futile attempt to make results compiler-independent by adding
828      some "_d 0", etc. no effect.
829    o for mnc output, fill the 'T' coordinate var with myTime and create a
830      separate 'iter' variable for iteration count
831    o pkg/diagnostics:
832      add new capability: output of Global/Regional & per-level statistics ;
833      tested against monitor output (including land & thSIce) on various exp.
834    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
835    
836    checkpoint57h_done
837      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
838      data.diagnostics, data.gchem, data.ptracers) is done.
839    
840    o pkg/diagnostics: prepare for Global/Regional statistics.
841      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
842    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
843      and rename it: DIFFERENT_MULTIPLE
844    
845    checkpoint57h_post
846    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
847    o pkg/diagnostics: change output frequency, now in seconds (instead
848      of Nb of iterations). This requires to change data.diagnostics.
849    checkpoint57h_pre
850    
851    o in mnc, let the user create the output dir if both mnc_outdir_date
852      and mnc_outdir_num are false
853    o add fflags() to pkg/diagnostics which allows one to specify, on a
854      per-file basis, the file precision [default behavior is unchanged]
855    o added diagnostics to pkg/kpp, including computation of mixed layer
856      depth based on a temperature/density criterion
857    o updated verification/natl_box to test the new pkg/kpp diagnostics
858    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
859    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
860    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
861      not mnc -- this mistake was found by JMC and is now corrected
862    
863    checkpoint57g_post
864    o add Adams-Bashforth 3rd Order time stepping:
865      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
866      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
867    checkpoint57g_pre
868    
869    o make lambda[Theta,Salt]ClimRelax spatially varying
870      (default remains spatially uniform constant based on tau)
871    o added new control variables
872      * init. uVel, vVel, etanN
873      * lambda[Theta,Salt]ClimRelax
874    o separate masks used for ctrl_pack/unpack 'from write_grid' output
875      (suggested by G. Forget)
876    
877    checkpoint57f_post
878    o add parameter "baseTime" = model base time = time at iteration zero
879      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
880      account for baseTime shift
881    o move Coriolis arrays from PARAMS.h to GRID.h
882    checkpoint57f_pre
883    
884    o mnc-ifying the seaice package
885    o introduced an alternative length scale calculation for use in the limiting
886      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
887    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
888    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
889      as well as grad(vort3).  Made it compatible with both approximate form
890      for the cubed sphere and full form of these gradients.  Added flag
891      useFullLeith to select between approximate and full form.  
892    o add "d0" in getcon.F to reduce differences between compilers/platforms
893      update output.txt of exp. fizhi-gridalt-hs
894    o change port_rand funtion to allow to set the seed.
895    o fix obscure MNC bug involving conversion between reals and integers
896      - it caused no problems with certain (eg. gcc, ifc) compilers but the
897        new version is now more standards-compliant
898    o adjoint-related modifications
899      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
900      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
901      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
902    
903    checkpoint57e_post
904    o Adding eddy stress controls a la Ferreira et al.
905    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
906    
907    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
908      update output.txt of exp. fizhi-gridalt-hs
909    o add more "Z" dimensions and associated coordinate vars to MNC
910    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
911    o parameter calendarDumps: when set, approximate months (30-31 days) and years
912      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
913      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
914      months and years.  Requires pkg/cal.
915    o diagnostics: add pickup functionality
916      - off by default for backwards compatibility
917      - current version only uses MDSIO -- MNC will be added
918    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
919    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
920    
921    checkpoint57d_post
922    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
923    o modify verification/ideal_2D_oce so that it tests the creation of mnc
924      output from the diagnostics package
925    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
926    o make genmake2 more portable by using ".$FS" instead of ".f" for more
927      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
928    o add coordinate variables to the MNC output from the diagnostics package
929    o change MNC-flags default value: true when useMNC=TRUE
930    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
931      the ability (off by default) to read the grid information using MNC
932    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
933    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
934    o do snap-shot diagnostics at the middle of the time-interval (instead of
935      at the end).
936    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
937      new test for AIM with thSIce + slab-ocean
938    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
939    o move state variable diagnostics to the beginning of the time step ;
940      (note: still needs some work specially for snap-shot diagnostics)
941      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
942    
943    checkpoint57c_post
944    o Change testing option (-ieee) to get closer agreement between g77 & ifort
945    o generate new output.txt files on faulks with g77 & the new -ieee option
946    checkpoint57c_pre
947    
948    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
949      update output.txt of exp. global_ocean.90x40x15
950    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
951      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
952    o add saltFlux(+File) forcing capability with periodicExternalForcing
953    o allow to use pkg diagnostics for GM-Redi & ThSIce output
954    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
955    o improvements for the MNC output from DIAGNOSTICS:
956      - correct handling of the unlimitied dimension
957      - all dims now have associated coordinate variables
958      - variables located at U, V, and Corner ("Z") points are now written
959        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
960        *all* data points are output
961    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
962    o added pkg/seaice/seaice_monitor.F
963    o mdsio_readfield.F can now read files visible only to master MPI process.
964    o pkg/seaice: some test code for ice-modified ocean stress
965    o exf_getffields interpolation defaults to bilinear for all scalar forcing
966      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
967      spurious negative numbers for precipitation and humidity.  Will cause
968      some small numerical differences for integrations using pkg/exf/exf_interp.F.
969    o pkg/ctrl/
970      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
971        May be enabled via doPackDiag
972      *  introduce z-scaling of
973         + gradient (doZscalePack) and
974         + control (doZscaleUnpack)
975    o pkg/mdsio/
976      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
977      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
978    
979    checkpoint57b_post
980    o simplify options in diagnostics_fill arguments (remove weird combinations)
981    o fix MNC coordinate variables so that they now contain per-face index
982      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
983      general, EXCH2 grids are only aligned to a "local" coordinate system
984    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
985    o Implement instantaneous output within pkg diagnostics:
986      setting a negative frequency in data.diagnostics produces
987     "snap-shot" output (as opposed to time-average if freq > 0)
988    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
989      NOTE: change ptracer diagnostics name: use 2 characters to work with
990            more than 9 tracers. Add also diagnostics of advect & diffus flux.
991    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
992      becomes the coordinate variable for the 'T' dimension
993    o add CF-style coordinate variables to MNC
994      - just a first cut:  numbers are meaningless on the cubesphere and
995        missing along the T axis but otherwise it works!
996    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
997    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
998    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
999      this is based directly on what the model compute, so that the content of
1000      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1001    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1002    o clean up build options files for SunOS, in particular
1003      - remove -traditional from xmakedepend
1004      - change -xarch=v9 to -xarch=native for f77
1005      - restore use of make (not gmake)
1006      - add CC=gcc if using g77
1007    o changes per discussion of AM, JMC, & EH3 today:
1008      - move redundant "grid" variables out of "state" -- in preparation of
1009        creating proper CF-style coordinate variables and in recognition
1010        that any/all grid variables can be easily copied (eg. w/NCO) from
1011        the grid files into any of the other NetCDF files
1012      - *always* output grid variables with MDSIO (this will eventually be
1013        changed)
1014      - output MNC grid file if useMNC is true
1015    o every instance of _END_MASTER() has been found and replaced with
1016      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1017      preprocessors
1018    o re-arrange diagnostics pkg initialisation:
1019     - allow each package to extend the available diagnostics list
1020     - add some checking and fix small problems (multi-threaded, ...)
1021     - new S/R diagnostics_fill (replace fill_diagnostics):
1022       look through the short list of active diag. (instead of the long list)
1023       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1024    
1025    checkpoint57a_post
1026    o this set of changes restores TAMC compatibility
1027      tested for global_ocean.90x40x15 adjoint on trough
1028      (what a pain)
1029    
1030    checkpoint57a_pre
1031    o some modifs in tools/build_options for sunos
1032    o call ctrl_pack for ctrl at end for optimcycle=0
1033    
1034    checkpoint57
1035    o add horizontal bi-harmonic viscosity for vertical velocity
1036      - new parameter viscA4W (defaults to viscA4)
1037      - affects only non-hydrostatic code
1038      - to be done: no-slip lateral boundary conditions
1039    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1040    o implement Implicit Vertical advection for pTracers
1041    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1042      (implemented also for implicit vertical diffusion & advection)
1043    o OBCS: extend application of tracer open boundary conditions
1044      to a strip beyond the boundary of width Olx/Oly
1045    o add call monitor to TAF set of required calls (flow directives)
1046      and include in natl_box_adjoint
1047    o untangle a few ifdefs related to cost, ctrl, autodiff
1048      untangel a few ALLOW_ECCO_OPTIMIZATION
1049    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1050      (theta2, salt2 in ecco_cost_weights)
1051    
1052    checkpoint56c_post
1053    o OBCS as control variables
1054      - update ctrl_ad_diff.list, obcs_ad_diff.list
1055      - remove balance of obcs controls from default
1056      - fix index bug nobcs in ctrl_init
1057      - fix dummy fields filen in ctrl_pack
1058      - add dummy weights for obcs
1059    o lsopt: comment out fort.94 output
1060    o optim:
1061      - remove unnecessary header files
1062      - adjusted namelists
1063      - add xerbla.F to Makefile
1064    o exf:
1065      - multiple modifications of exf_check_range
1066      - unit change in exf_init_runoff from [m/year] to [m/s]
1067    o mdsio:
1068      - i/o-vector change debugLevel from debLevA to debLevB
1069    
1070    checkpoint56b_post
1071    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1072      is called from DO_THE_MODEL_IO
1073      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1074      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1075      - clean up PTRACERS_WRITE_TIMEAVE a little
1076    o add another verification experiment that tests both the cfc-pkg and
1077      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1078      reactive tendencies treated inline with regular timestepping
1079    o testreport previously did a lousy job of comparing small numbers, so
1080      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1081      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1082      testreport.
1083    o ptracers_monitor: bug fix for MPI
1084    
1085    checkpoint56a_post
1086    o GCHEM: finish reorganizating the package
1087      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1088        (introduces another 3D-array for each passive tracer, but only if
1089        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1090        gchemTendency is not needed because the timestep is done separately)
1091      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1092      - GCHEM is now---more or less cleanly---separate from PTRACERS
1093      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1094        so clear to me how that should be done in a general way.
1095    o CFC: improve formatting of output in CFC_ATMOS
1096    o PTRACERS:
1097      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1098        that ALL experiments with ptracers enable can be checked. This makes
1099        GCHEM_MONITOR obsolete.
1100      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1101        monitorFreq
1102      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1103    o add PTRACERS (PTR0[1-5]) to testreport output
1104    o exf_check_range:
1105      * default changed to .TRUE.
1106      * will check values for niter0 if debLevA, every timestep if debLevB
1107      * STOP in exf_check_range if 'out of range'
1108      * range chosen generous to allow for potential extema
1109      TBD: a version with stricter range
1110           permitted range would be runtime parameters
1111    o GMredi:
1112      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1113      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1114      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1115    o GCHEM:
1116      - move call to GCHEM_FORCING_SEP, so that it is now called before
1117        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1118      - introduced a useGCHEM runtime flag and applied it everywhere.
1119      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1120        this flag is now only visible within GCHEM-pkg routines.
1121      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1122        be replaced by a 3D array that is computed before thermodynamics; for
1123        this, the tracer ID iTracer had to be included into the parameter list
1124        of ptracers_forcing
1125      - set up forward_step to call gchem_forcing, that will replace
1126        gchem_forcing_int in ptracers_forcing
1127      - cleaning up
1128    o small cleaning of exch2: remove files that are also in eesupp/src
1129    
1130    checkpoint56
1131    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1132    o mnc: cleanup "full" files--fixes out-of-memory problem
1133    o ECCO-GODAE
1134      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1135      * fully merged and updated from SIO code
1136        windstress sign change affects
1137        - exf_inscal_[u/v]stress
1138        - sign of xx_tau[u/v] adjustments
1139        - signs in cost_scat
1140      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1141      * natl_box_adjoint updated and compressed
1142      * 2-level checkpoint switch added
1143        (tested in EXP. 1 of natl_box_adjoint)
1144      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1145    o SVD
1146      * first complete, non-hacked version for SVD calculations
1147      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1148        performed via direct access files admtlm_vector.it????
1149        (via ctrl_[un]pack)
1150      * optimcycle is used for ARPACK iteration counter
1151        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1152      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1153        and add linear transforms where necessary
1154      * controls are initial/final SST, SSS (can be extended; need to check
1155        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1156    o mdsio: filename info to both stderr, stdout
1157    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1158      from sign change
1159    
1160    checkpoint55j_post
1161    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1162      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1163    o add consistent build directories and .cvsignore files to verification
1164    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1165    o make all subroutines 30 or less characters in length for certain older
1166      compilers to work (a thorough search only turns up two routines in
1167      pkg/ptracers)
1168    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1169      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1170    
1171    checkpoint55i_post
1172    o change arrays for total vertical diffusivity (2.D if explicit,
1173      3.D if implicit) ; each ptracer uses its own background value.
1174    o added mnc/NetCDF output capability to ocn_compon_interf
1175      - added bits to verification/cpl_aim+ocn so that it can run on
1176        ITRDA and other clusters without the mpirun "-wd" option
1177    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1178      configuration
1179    o give MNC the ability to create additional files rather than
1180      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1181      - the default is just less than 2GB which is a practical limit
1182        on many systems
1183    o Compute the non-local term using either KPP vertical diffusivity (=default)
1184       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1185    
1186    checkpoint55h_post
1187    o add verification test "vermix"
1188    o remove all the *_ioinc flags and replace with the single global
1189      outputTypesInclusive flag
1190    o allow to set a vertical profile of vertical diffusivity for T & S
1191    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1192    o useMNC moved from data.mnc to data.pkg
1193    
1194    checkpoint55g_post
1195    o Renaming carbon AD experiments to comply with testreport conventions
1196    o Updating adjoint of Held-Suarez hs94.1x64x5
1197    o Fixing directives for non-ECCO forward_step, after ECCO directives
1198      have been fixed to avoid recomp. of do_oceanic_phys
1199      Works well for global_ocean.90x40x15,
1200      but recomp. issue remains for carbon
1201    o Updating adjoint output for natl_box_adjoint after
1202      pkg/ecco has been modified (see taga c55d_post)
1203    
1204    checkpoint55f_post
1205    o rename to timeave_init_fixed
1206    
1207    checkpoint55e_post
1208    o some delicate re-shuffle of store directives to avoid one
1209      extra call of do_oceanic_physics
1210      affects ecco_the_main_loop.F, do_oceanic_physics.F
1211      checkpoint_lev1_directives.h
1212    o NB: this may break global_ocean adjoint temporarily,
1213      but it is clear how to fix it. Will do later, need this now.
1214    
1215    checkpoint55d_post
1216    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1217    o ecco_cost_weights is modified to 1x1 runs
1218    o modifs to allow observations to be read in as
1219      single file or yearly files
1220    o enable to read exf forcing fields as either
1221      single file or yearly files (flag useExfYearlyFields)
1222    checkpoint55d_pre
1223    
1224    o switch between 2-level and 3-level checkpointing
1225    o add ability of MNC to write local and "partial" (eg. 2D slices where
1226      the full 3D field is never actually stored) arrays to NetCDF files
1227      with the correct (that is, the complete multi-dimensional) set of
1228      array indicies
1229      - used in mom_vecinv() to write the diagFreq output
1230      - tested (demonstrated) in verification/aim.5l_cs
1231    o further mnc-ification
1232      - add verification/lab_sea to the list with mnc setups
1233      - fix undefined mnc v-names in cd_code
1234      - add kpp to mnc output (both snapshot and timeave)
1235    o non-hydrostatic code
1236      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1237        in calc_gw.F
1238      - defaults to viscAh
1239      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1240        friction or Leith) in non-hydrostatic mode, as long as there is
1241        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1242    o pkg/cost
1243      extend simple cost functions to treat time mean quantities
1244      (T,U,V) via cost_accumulate_state from cost_tile
1245    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1246        be 2 times larger than the minimum size the advection scheme requires.
1247        now get a perfect conservation of salt in advect_cs test-exp (updated)
1248    o GGL90 (Gaspar's TKE mixed layer)
1249      - add horizontal diffusion of TKE, requires exchanges in
1250        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1251        default. In OPA there is no horizontal diffusion of TKE but the
1252        mixing coefficients are computed from a horizontal average of TKE of
1253        6 points or so. I think that diffusion has a little more physical
1254        justification.
1255      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1256        was in vain)
1257      - mask tke-variable in ggl90_init
1258    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1259    o fix biharmonic diffusion on CS-grid.
1260    o more obcs stuff
1261      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1262        for reading boundary values. This routine is called from
1263        obcs_prescribe_read
1264      - updated obcs_check
1265      - changed sponge layer relaxation parameter units for days to seconds
1266      - turned off sponge layer by default
1267      - changed argument list of OBCS_CALC to myTime+deltaTclock
1268      - fixed about 35 bugs in obcs_external_fields_load
1269    
1270    checkpoint55c_post
1271    o obcs stuff
1272      - new runtime flags useOBCSprescribe, useOBCSbalance
1273      - re-arranged obcs_calc
1274      - moved exf_getobcs to obcs_prescibe_read
1275        obcs_prescibe_read is called after ORLANSKI stuff
1276        and independent of it (executable can contain all).
1277      - updated obcs_check
1278      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1279        These may be necessary only if tangential velocities are
1280        prescribed at OB, not sure, needs testing.
1281    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1282      which simplifies the calls and passes the ifc check-bounds test
1283    
1284    checkpoint55b_post
1285    o add a 2D scalar, Z location, exchange_2 routine.
1286    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1287      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1288      affects advect_cs results (for the wrong reason): update output.txt
1289    o use a more standard discretization for biharmonic viscosity ;
1290     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1291      affects results of dome set-up: update output.txt
1292    o fix gad_advection.F (CubedSphere part), back to version 1.23
1293    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1294    
1295    checkpoint55a_post
1296    o merged code to
1297      * prescribe/read time-dependent open boundaries
1298        (works in conjunction with exf, cal)
1299      * sponge layer code for open boundaries
1300      * each boundary N/S/E/W now has its own CPP option
1301        (healthy for the adjoint)
1302    
1303    checkpoint55
1304    o up-to-date adjoint of previous breaks
1305      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1306      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1307      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1308      - carbon: * remove tr1-related adjoint verification
1309                * add ptracer as control variable
1310    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1311      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1312    
1313    checkpoint54f_post
1314    o in verification/carbin/ remove experiment related to
1315      ALLOW_PASSIVE_TRACER (array tr1 etc)
1316      code_ad/ input_ad/ results_ad
1317    
1318    o add two new packages
1319      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1320        + subject to optimization (memory)
1321      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1322        + subject to reordering (many GOTOs in the original code)
1323        + so far opps is called for every (i,j) point, and then operates in
1324          the vertical; one may want to reorder the scheme in order operate in
1325          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1326          fields)
1327    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1328      - all verification tests compile and run with linux_ia32_g77
1329      - defaults are compatible with current input files--nothing
1330        should change if you were not previously using MNC
1331      - MNC output has been added in numerous places (eg. timeave)
1332        but there are still a few writes not yet do-able with MNC
1333        (this is in progress)
1334      - flags now allow for either/or/both use of MDSIO and MNC and
1335        documentation will soon follow
1336      - numerous small formatting cleanups for ProTeX
1337    o add version info (via BUILD_INFO.h) to MNC and stdout
1338    
1339    checkpoint54e_post
1340    o add two new packages
1341      - pp81 (Packanowski and Philander, 1981), Richardson number and
1342        stratification dependent mixing
1343      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1344      - these scheme operate in a similar manner as KPP (without ghat, of
1345        course), however there is only one diffusivity that is used for both
1346        temperature and salinity (and passive tracers)ç
1347    o add offline package
1348    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1349      provided by Stephanie Dutkiewicz
1350    o genmake2: add ability to search for C compilers and cleanup test output
1351      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1352    
1353    checkpoint54d_post
1354    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1355    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1356      leading to additional shift by 5 days each year of integration
1357       (i.e. leading to considerable offset over the years)
1358    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1359    o start with no AB and no initial filtering (staggerTimeStep):
1360      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1361    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1362      (external loading & cpl import/export stay in forward_step.F)
1363    o update coupling interface to work with new staggerTimeStep
1364    o change MDSIO ptracers_pickup.
1365    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1366    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1367    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1368    
1369    checkpoint54c_post
1370    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1371      this affects (truncation error) output.txt of test-exp:
1372       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1373    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1374    o change Qnet to always be the net heat flux, (+upward).
1375      affects (truncation error) output of natl_box exp.: updated
1376    o define the max number of passive tracers in PTRACERS_SIZE.h
1377    o start to test mnc routinely in exp0
1378    o add sea-ice loading (sIceLoad) as a new forcing field.
1379    
1380    checkpoint54b_post
1381    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1382       impressive on Altix and Opteron systems)
1383    o diagnostics can now write NetCDF files through the mnc package
1384    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1385    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1386    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1387      affects (truncation error) output of lab_sea & natl_box exp.: updated
1388    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1389    
1390    checkpoint54a_post
1391    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1392    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1393    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1394    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1395      + internal_wave (shift in writing cg2d_ini_res)
1396    checkpoint54a_pre
1397    
1398    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1399      - modified verification/lab_sea and natl_box_adjoint accordingly
1400    
1401    checkpoint54
1402    checkpoint53g_post
1403    o prepare splitting of thermodynamics: store convect.counter in common block
1404    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1405      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1406    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1407    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1408    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1409    o restore adjointability
1410    
1411    checkpoint53f_post
1412    o modifications that affect AIM experiment results (update output.txt):
1413      - no advection of S at top interface Nr (pkg/generic_advdiff)
1414      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1415    o AIM pkg:
1416      - include stability function into surf.Flux derivative relative to Tsurf
1417      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1418    
1419    checkpoint53e_post
1420    o merged cylindrical coord configuration
1421    o added rotating_tank experiment
1422    checkpoint53e_pre
1423    
1424    checkpoint53d_post
1425    o faulks upgraded: re-generate output.txt that have changed:
1426       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1427    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1428    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1429    o added Sadourny discretization of Coriolis
1430      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1431      - re-enabled use of omega3 (useAbsVorticity)
1432    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1433      vector-invariant equations
1434      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1435    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1436      hopefully without new bugs
1437      - still to do: biharmonic friction for non-hydrostatic w
1438    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1439    o regenerated output for global_ocean_ebm (using -ieee)
1440    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1441      of mom_common/
1442      - simple re-arrangement of instructions within computing loop
1443    checkpoint53d_pre
1444    
1445    checkpoint53c_post
1446    o new version of coupler for AIM+thSIce and Ocean models
1447     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1448     - land: change Evaporation of snow
1449     - aim with thSIce: fix bug in snow-precip.
1450    o changes to calc_gw.F
1451     - bug fix for w^2 term near the bottom boundary
1452     - (hopefully) improve the lateral slip boundary condtions for use with
1453        partial/looped cells
1454      - because the bug fix changes two verification experiments anyway (exp5
1455        and plume on slope), change the lateral boundary condition from half slip
1456        to the value of no_slip_sides
1457    o ebm package wasnt quite up to the parallel task. Fixed that.
1458    o Adjoint of EBM package + verification
1459      * TLM OK
1460      * ADM not sufficient accuracy yet (needs further testing)
1461    
1462    checkpoint53b_post
1463    o Commiting new energy balance model to repository
1464      * package is pkg/ebm
1465      * verif. is verification/global_ocean_ebm
1466      * references are in ebm_driver.F
1467    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1468    C        Global thermohaline circulation. Part I:
1469    C        Sensitivity to atmospheric moisture transport.
1470    C        J. Climate 12(1), 71-82
1471    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1472    C        Global thermohaline circulation. Part II:
1473    C        Sensitivity with interactive transport.
1474    C        J. Climate 12(1), 83-91
1475    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1476    C        Destabilization of the thermohaline circulation
1477    C        by atmospheric eddy transports.
1478    C        J. Climate 7(12), 1870-1882
1479    o Will need long integration testing.
1480    checkpoint53b_pre
1481    
1482    o created pkg/mom_common in preparation for variable viscosity code
1483    o renamed and split ini_mnc_io
1484    o pkg/land: only liquid water can diffuse or run-off
1485    o AIM using land: soil wetness availability account for snow
1486    o added printMapIncludesZeros to EEPARMS namelist
1487    
1488    checkpoint53a_post
1489    o restore TAMC compatiility for exf_constants.h
1490      (no usage of _d in .h)
1491    o Additional storing in KPP in an attempt to fix
1492      TAMC problem with adjoint of KPP code.
1493      (no success...)
1494      Identical code works fine with TAF.
1495    o Fixed verification/natl_box_adjoint experiments.
1496      Initial conditions for Experiments 4 and 5 are now
1497      set to "SEAICE_initialHEFF=0", which is more reasonable,
1498      and hence gives results closer to that of Experiment 2.
1499      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1500    
1501    checkpoint53
1502    o stable checkpoint with up to date adjoint
1503      TLM tests only run for 1st grdchk at the moment. Its unclear if
1504      this is a code problem or a problem with resetting code for g_
1505      variables that is being autogenerated wrong.
1506      Otherwise:
1507       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1508       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1509         are both still in chaos following their security messes.
1510    
1511    checkpoint52n_post
1512    o various build (mostly genmake2) changes including:
1513      - ability to build/run more easily within Cygwin and MacOS X
1514      - more complicated Makefiles with a stronger dependence on Gnu Make
1515    o pkg/seaice modifications
1516      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1517        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1518        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1519      - changed proxy for geostrophic velocity and updated
1520        verification/lab_sea/results/* accordingly
1521      - removed ADI dynamic solver from pkg/seaice
1522      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1523        they caused a segmentation fault under certain circumstances
1524      - removed unused field WATR
1525    o bug fix in exf-package:
1526      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1527         now reflect that.
1528    o small fixes in the cal-package:
1529      - set reference date to first of January for the 'model'-calendar
1530      - failing of cal_CheckDate in cal_FullDate now actually results in a
1531        warning
1532    o small modifications in exf-package to increase flexibility:
1533      - change climtempfreeze from a constant to a runtime parameter that
1534        is specified in data.exf_clim (default = -1.9)
1535      - introduce runtime parameter windstressmax (default = 2.0) that is
1536        specified in data.exf
1537    o fix in pkg/thsice:
1538      - update Evap (Tsf changes) to be consistent with Latent heat flux
1539      - maintain snow precipitation unchanged (even if Tsf >=0).
1540     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1541    
1542    checkpoint52m_post
1543    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1544      this does not change any of the results, because myIter=0 in swfrac always
1545      lead to jwtype=2 (the default anyway), but the call makes little sense
1546      as a default
1547    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1548    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1549      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1550    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1551    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1552    o extending useSingleCpuIO option to work with new exch2 I/O format
1553      - old-style, missing-tile I/O is still accessible by defining CPP
1554        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1555    o monitor package can write to NetCDF files and/or STDOUT
1556    o fix re-definition bug in MNC_GRID_INIT_ALL()
1557    o doc/api_reference added
1558      - a framework for building an API Reference Manual using all
1559        the "protex" comments embedded in the code
1560      - see pkg/generic_advdiff, pkg/mnc for examples
1561    o MNC:
1562      - make myThid the last argument for all subroutines
1563      - new default for the grid files: NO halos
1564      - add useMNC and other run-time flags
1565      - separate per-file-group handling of the unlimited dimension
1566      - early initialization of MNC w/ flags read at the eeboot stage
1567        and lookup tables set in initialize_fixed
1568      - write all MNC output to a freshly-created directory
1569    o thermodynamics sea-ice (thsice) is now tested with testreport.
1570    o test exp. advect_cs: use the standard cs32 grid ; update output.
1571    o Added functionality to grdchk:
1572      pick global i,j,k position (or nearest wet) where to perform check.
1573    
1574    checkpoint52l_post
1575    o new land formulation:
1576      a) use ground enthalpy as prognostic variable to ensure exact
1577         energy conservation.
1578      b) account for water temperature and for latent heat of freezing
1579         in all processes (rain, run-off, ground storage)
1580      c) compute surface and ground temperature implicitly.
1581    o aim_v23 modification for new land model:
1582      a) Treat separately land / ocean / sea-ice surface fluxes
1583         to allow implicit computation of land & sea-ice surface temp.
1584      b) add snow precipitation.
1585    checkpoint52l_pre
1586    
1587    o fix problem (when 1 tile is empty) in min/max monitor.
1588    o fix bug in timeAve (u,vZetatave in common block)
1589    o no restoring terms under ice for pkg/seaice
1590    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1591    o bug fix for pkg/seaice pickups
1592    o change MNC call locations and add coordinate attributes
1593    o mask vorticity at the corner ; affects global_ocean.cs output
1594    o fix ini_curvilinear_grid ; test CS experiments with mpi
1595    o aim.5l_cs: modify sea-ice fraction input file ; update output
1596    o exf: Adding simple range check routine for exf fields after read
1597    
1598    checkpoint52k_post
1599    o removed top-level directory "diags"
1600      - we migrated these functions to pkg/timeave a long time ago
1601    o fixed bug introduced in pkg/monitor
1602    o accuracy ctrlprec = 32 insuffient for gradient checks using
1603      averaged fields (I/O via cost_averages)
1604      -> use ctrl.h in active_file*.F to control I/O precision.
1605    o paramter list of CALL ADTHE_MAIN_LOOP
1606    o added initial do_the_model_io to ecco
1607    o set all ...Freq to zero after cost_final
1608      taveFreq, dumpFreq, pChkptFreq
1609    o MAIN and ECCO differentiability restored
1610    
1611    checkpoint52j_post
1612    o fix nchklev in tamc.h for global_ocean...
1613    o Bringing flow and store directives up-to-date
1614    o Really weird thing!
1615      call do_the_model_io from the_main_loop with parameters
1616      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1617      TAF places a faulty re-call of initialise_varia
1618      after cost_final call which should not be there!
1619    checkpoint52j_pre
1620    
1621    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1622      error messages
1623    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1624    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1625      debug output
1626    o modfied mdsio_writefield.F to handle non-global files under exch2
1627    o update AIM Cubed-Sphere exp (aim.5l_cs):
1628      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1629    o update AIM Equatorial Channel exp:
1630      use standard aim_v23 pkg and change the SST fields to be more realistic.
1631    o globalFile now works with exch2
1632    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1633      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1634    o limit timeave output for hi-res integrations
1635    
1636    checkpoint52i_post
1637    o removed CPP_EEOPTIONS.h from verification/*/code
1638    o updated the tiling for global_ocean_pressure
1639    checkpoint52i_pre
1640    
1641    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1642      the old pkg/aim).
1643    
1644    checkpoint52h_pre
1645    o shortened offending lines in exch2_send_rx?.template
1646    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1647    o genmake2: add build & execute test for NetCDF code
1648    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1649      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1650    o added useSingleCPUIO flag to monitor.F and mon_out.F
1651    o added temporary hack for sea-ice dynamics on the cube:
1652      metric terms are ignored and it is assumed that
1653      there is no sea-ice on cube faces 1, 2, 4, and 5.
1654    
1655    checkpoint52f_post
1656    o added exch2 cube routines to pkg/exch2
1657    o modified hs94.cs-32x32x5 to use it
1658    o added new grid files to hs94.cs-32x32x5
1659    checkpoint52f_pre
1660    
1661    checkpoint52e_post
1662    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1663      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1664    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1665      to work with implicit vertical advection and AB ;
1666    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1667    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1668     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1669    checkpoint52e_pre
1670    
1671    o fix bug in impldiff when Nr=1 or Nr=2.
1672    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1673    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1674    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1675      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1676    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1677    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1678    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1679    
1680    checkpoint52d_post
1681    o re-tiled many expts to allow comparison in multi-processor mode
1682      - updated output accordingly
1683      - changed hs94.128x64x5 to use intial T from file rather than use the
1684        random number generator
1685    o add infrastructure in model routines for fizhi and gridalt packages
1686    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1687    o changes to permit hi-res, cubed-sphere, configuration
1688      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1689      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1690      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1691        of surface winds for the cube
1692      (A verification experiment, based on global_ocean.cs32x15, but with
1693       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1694       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1695       complete with example surface forcing files and matlab scripts to look
1696       at the output and compare it with that of global_ocean.cs32x15.)
1697    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1698       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1699       to conform to the common rule.
1700    o check-in the first version of the coupler + interfaces for multi-components
1701       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1702       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1703       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1704       - ocean and atmos. share the same horizontal grid (no interpolation).
1705       - exchanges between component and coupler is done in forward_step
1706    o new verification experiment, cpl_aim+ocn:
1707       coupled ocean - AIM atmosphere on cs32 grid.
1708    
1709    checkpoint52d_pre
1710    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1711    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1712    
1713    checkpoint52c_post
1714    o Fixing OPTIONS files for use of exf:
1715      - ALLOW_ECCO not needed
1716      - ECCO_CPPOPTIONS.h should not be included from
1717        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1718        as has been the case in the past
1719      - All cal/exf related options are currently set in
1720        single header file. Should remain so until we
1721        agree on a consistent new policy.
1722    o Removed all CPP options for cal package.
1723      cal has no more CPP options.
1724    o modified STOREs in GAD_ADVECTION
1725    o corrected key comp. for passkey
1726    
1727    checkpoint52b_post
1728    o new version: "thsice" of thermodynamic sea-ice pkg:
1729     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1730     - modify fluxes but do not change theta directly;
1731     - light cleaning of bulk_force pkg (still needed with thsice).
1732     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1733       + output_thsice.txt to test thsice & bulk_force pkgs.
1734    o put back grid & coriolis monitor output.
1735    checkpoint52b_pre
1736    
1737    o call "do_the_model_io" at the beginning (=> dump initial state)
1738    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1739    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1740      (need info on NUMBER_OF_PTRACERS)
1741    o missing PTRACERS headers in some routines
1742    o default tamc.h in pkg/autodiff supposed to crash
1743      to ensure proper customization
1744    
1745    checkpoint52a_post
1746    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1747      - moved surfaceTendencyTice from pkg/seaice to main code
1748      - subroutine FREEZE_SURFACE now limits only surface temperature
1749        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1750        => new output.txt for global_ocean.cs32x15 & global_with_exf
1751      - keep the old version of FREEZE for backward compatibility;
1752        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1753      - corresponding modifs for TAF directives
1754    o added surface flux output variables to TIMEAVE_STATVARS
1755    o time-averaged output for pkg/ptracers
1756    o fix problem with ECCO-related divided adjoint
1757      snapshot file was missing some ad-variables,
1758      but no warning issued by TAF
1759    
1760    checkpoint52a_pre
1761    o some bug fixes for #undef REAL4_IS_SLOW
1762    
1763    checkpoint52 = ecco_c52_e35
1764    o after testing adjoints of checkpoint51u_post
1765    
1766    checkpoint51u_post
1767    o this is the post-merge tag of the ecco-branch
1768      (needs another clean checkout and re-testing)
1769    o various natl_box_adjoint configs and results
1770      but no input fields
1771    o obcs adjoint not yet merged!
1772    o adding ECCO global 1x1 and 2x2 degree configs
1773    o updated/extended some store directives for seaice
1774    o pkg/ecco now containes ecco-specific part of cost function
1775    o top level routines the_main_loop, forward_step
1776      supersede those in model/src/
1777      previous input data.cost now in data.ecco
1778      (new namelist ecco_cost_nml)
1779    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1780    
1781    checkpoint51t_post
1782    o this is the pre-merge tag of the ecco-branch
1783    
1784    checkpoint51s_post
1785    o cleanup: removed various obsolete #define-s
1786    o pkg/grdchk
1787      - renamed 'ph-grd 3' to 'grad-res'
1788      - merged from ecco-branch
1789        (remaining bug fixes for obcs gradient checks)
1790      - additional high-precision output for testreport
1791        (grep for 'precision_grdchk_result')
1792    
1793    checkpoint51r_post
1794    o cleaned up or removed CPP_OPTIONS.h files
1795    o updated results for some of the tests to reflect the new
1796      optfiles (-ieee: -O0 instead of -O3)
1797    
1798    checkpoint51q_post
1799    o cd_code:
1800      - moved cd_scheme.F -> cd_code_scheme.F
1801      - separate read_checkpoint from cd_code_ini_vars.F
1802      - separated cd_code part from write_checkpoint
1803      - updated AD_SOURCE, generated .flow
1804      - added CD_CODE_VARS.h to the_main_loop
1805      - Moving cd_code specific store dir.s to pkg/cd_code
1806    o ctrl package totally restructured
1807      - pack/unpack now optional and decoupled from
1808        xx_/adxx_ I/O
1809      - ctrl_pack/unpack cleaned
1810        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1811      - confined inclusion of AD_CONFIG.h to where necessary.
1812    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1813    
1814    checkpoint51p_post
1815    o create initial cd_code package
1816      - WARNING: the initialization of fields within packages
1817        is broken because INI_FIELDS (where READ_CHECKPOINT is
1818        called) is called *before* PACKAGES_INIT_VARIABLES.
1819        This seems to be backwards since
1820        1) its important to initially zero the entire field including
1821           the "halo" region
1822        2) zeroing needs to be done *before* reading pickup info
1823           and the pickup call might or might not happen in any
1824           particular run
1825      - this needs an overhaul for R2
1826    o cleanup verification/*/code/GMREDI_OPTIONS.h
1827    o cleanup testreport
1828    
1829    checkpoint51o_post
1830    o bringing AD-related verif's up to date with genmake2
1831      - carbon/
1832      - global_ocean.90x40x15/
1833      - hs.94.1x64x5/
1834      - (front_relax/ )
1835    o (more) consistent directory structure for AD-related verif.'s
1836    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1837    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1838    o bug fix in find_alpha.F for MDJWF:
1839      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1840        change rho -> rho-rhoConst
1841      - replace call find_rho to find_rhonum
1842    o initialisation of rFlx extended to full array (required by TAF)
1843      and shifted to thermodynamics
1844    o removed PTRACERS.h in ptracers routine
1845    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1846    o Correcting initialisations for fVerU, fVerV.
1847    o helping TAF to recognize dependency on kUp for
1848      fVerU, fVerV
1849    o Replacing delZ by delR in pkg/ctrl/
1850    checkpoint51o_pre
1851    
1852    o undid all of cp51 pending some cleanups and discussion
1853    o added the [#include "AD_CONFIG.h"] statement to all files that need
1854       it for adjoint/tl #defines
1855     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1856     o removed tools/genmake since it no longer works
1857    
1858    checkpoint51n_post
1859    o modifications to make FREEZE flux visible to pkg/kpp
1860      - moved surfaceTendencyTice from pkg/seaice to main code
1861      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1862      - subroutine FREEZE now limits only surface temperature
1863        (this means new output.txt for global_ocean.90x40x15,
1864         global_ocean.cs32x15, and global_with_exf)
1865    o added surface flux output variables to TIMEAVE_STATVARS
1866    
1867    checkpoint51n_pre
1868    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1869    o added [#include "AD_CONFIG.h"] to all files that use the following
1870      defines:
1871      - ALLOW_ADJOINT_RUN
1872      - ALLOW_TANGENTLINEAR_RUN
1873      - ALLOW_ECCO_OPTIMIZATION
1874    
1875    checkpoint51m_post
1876    o incorporating changes to get TAMC/TAF working in genmake2
1877      - added new TAMC/TAF targets to the Makefile
1878      - various cleanups related to package handling
1879      - these changes should have no impact on the forward model
1880    
1881    checkpoint51l_post
1882    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1883     - faster algorithm for cal_addtime.F
1884     - higher precision arithmetic, where needed
1885     - pkg/exf *startdate variables changed from calendar date to
1886       model integration time
1887    
1888    checkpoint51l_pre
1889    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1890    o enable to apply restoring on S & T only in a latitude band.
1891    o update output (external_forcing_surf modif. change truncation errors)
1892       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1893    
1894    checkpoint51k_post
1895    o change default to: useNHMTerms=.FALSE.
1896     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1897       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1898     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1899        exp1, ideal_2D_oce
1900     - change data file of oceanic exp (leave the results unchanged for now)
1901       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1902    o set gravitySign automatically according to the vertical coordinate used
1903      (and change sign: back to "logical" value: +1 when R increases downward)
1904    o added an include barrier to the default CPP_OPTIONS.h and
1905      removed the #include "PACKAGES_CONFIG.h" from it
1906    o fix a bug in mom_fluxform (from chk51j_post)
1907    
1908    checkpoint51j_post
1909    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1910    o adjusted some flow directives (dynamics, thermodynamics)
1911    o added cubed-sphere case to test cost function
1912    o heckpoint_lev?_directives.h now include
1913      pkg-specific directives, whenever those are enabled.
1914    o Moving pkg-specific flow directives to corresponding pkg
1915      Moving pkg-specific differentiation list to corresponding pkg
1916      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1917      ---> conventions are
1918           - pkg_ad.flow
1919           - pkg_ad_diff.list
1920           - pkg_ad_check_lev?_dir.h
1921    
1922    checkpoint51i_post
1923    o merge of the branch-genmake2
1924      - knowingly breaks the older genmake
1925      - automatic generation of all ALLOW_${PKG_NAME} defines
1926      - new testreport supersedes older testscript
1927    o large number of package inclusion and header cleanups
1928    checkpoint51i_pre
1929    
1930    o new output for adjoin of global ocean vector invariant
1931    o fix for checkpoint of thermodynamic seaice and bulk_force
1932    o Steph gchem various cleanups
1933    
1934    checkpoint 51h_pre
1935    o fixed some single quotes
1936    o modify gchem pkg to be more versatile
1937    o modifications to clean up dic pkg
1938    o add pkg/cfc
1939    
1940    checkpoint51g_post
1941    o provide links for ARPACK and ADM*TLM
1942    o start removing verification/vero/
1943    o update AD-related stuff
1944      (in particular some IF-statements in model/src/ routines)
1945    o adding to verification/global_ocean.90x40x15/ adjoint of
1946      vector invariant setup
1947    
1948    checkpoint51f_post
1949    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1950    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1951      of tracer Green's fucntions for ocean inversion project.
1952    
1953    checkpoint51f_pre
1954    o Added on-the-fly spatial interpolation capability
1955        "USE_EXF_INTERPOLATION" to pkg/exf.
1956      - This is a temporary Cartesian-grid hack until
1957        the super-duper ESMF coupler becomes available.
1958      - See verification/global_with_exf/README for usage example.
1959      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1960        flags and modified pkg/seaice accordingly.
1961    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1962        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1963        non-local transport term.
1964    
1965    checkpoint51e_post
1966    o pkg/mom_vecinv:
1967      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1968      - add time-ave diagnostic of vorticity advection.
1969    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1970    o atmospheric geopotential: - include water vapor effect;
1971                                - use p^kappa in p* scaling.
1972    o land pkg: read initial state from files.
1973    o AIM : add stratospheric drag in the upper level
1974    
1975    checkpoint51d_post
1976    o change function ILNBLNK (=> last non-blank char.) to return zero
1977      (instead of the string length) when the string. char is empty
1978    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1979    o modif's to restore TAMC compatibility
1980      - avoid "_d" constructs in PARAMETER declarations
1981      - avoid interrupting lines by comment lines
1982    o Use cluster local disks for purely local I/O
1983      vs. globally visible disks needed for ctrl stuff
1984      (merged from ecco-branch)
1985      - new active_file_loc... and mdsio_..._loc routines
1986      - affected packages: autodiff, ctrl, grdchk, mdsio
1987    
1988    checkpoint51c_post
1989    o introducing integer flag debugLevel
1990      - debLevZero: suppress all output
1991      - debLevA: standard
1992      - debLevB: equivalent to current debugMode=.TRUE.
1993    o introducing pathname variable mdsioLocalDir for mdsio
1994      that can be specified at runtime
1995      (relevant for cluster I/O to local disk)
1996    `
1997    >>>checkpoint51b_post
1998    adjoint of ptracers
1999    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2000    o extended state in checkpoint_lev?, etc.
2001    o alternative ctrl/cost with tr1 or ptracer
2002    o new comlev1_bibj_ptracers
2003    o new ptracers.flow
2004    o made ptracers_forcing same as external_forcing_s
2005    o added verification for adjoint with ptracers
2006      - adm. grdchk fail so far
2007      - tlm. grdchk OK
2008      - checked tapelev/comlev recomputations: OK
2009    <<<checkpoint51b_pre
2010    
2011    checkpoint51a_post
2012    o added code for biogeochemistry package
2013      - new pkgs: dic, gchem
2014      - new subroutine in ptracers
2015    o modify code for biogeo packages
2016      - in model/src and pkg/ptracers
2017    
2018    checkpoint51
2019    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2020      - autodiff, ctrl, exf, grdchk, seaice
2021      kept separate packages
2022      - cost, ecco, obcs
2023    o updating verification/internal_wave, verification/lab_sea
2024      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2025    
2026    checkpoint50i_post
2027    o Preparing next differentiable checkpoint and sync
2028      of MAIN vs. ecco-branch
2029      - 1st step: this one is differentiable
2030      - 2nd step: next(! not this) checkpoint will have updated packages
2031                  from ecco-branch)
2032    
2033    checkpoint50h_post
2034    o new package "land": provide surface BC for AIM.
2035    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2036    o AIM: use true log-P extrapolation for near surface temp (= as in
2037        F.Molteni paper) ; update aim.5l_cs output.
2038    o New variable in PARM03 for more flexible pickups
2039    o somewhat cleaned package initialisation sequence for
2040      ctrl/ cost/ ecco/ in packages_... routines
2041    
2042    checkpoint50g_post
2043    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2044      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2045      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2046        made the default because of faster convergence than ADI
2047    
2048    checkpoint50f_post
2049    o exf totally restructured
2050      - replaced all exf_set_ routines by one generic exf_set_gen.F
2051        and made sure it's still differentiable
2052      - split exf_getffields.F into new exf_bulkformulae.F
2053      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2054      - updated adjoint/makefile and relevant verif. accordingly
2055    
2056    checkpoint50f_pre
2057     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2058          + change Evap over land. (update aim.5l_cs output)
2059     o added missing .cvsignores and made uniform across expts
2060     o changed configuration of tidal_basin_2d expt
2061     o added pkg/debug functions for tracing code in fatal crashes
2062     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2063     o new fn in pkg/monitor to stop model if solution grows too big
2064     o removed lots of single quotes from comments
2065    
2066    checkpoint50e_post
2067    o make KPP work with PTRACERS
2068     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2069       nearly a copy of kpp_transport_s
2070     - there is no analogue to SurfaceTendencyS, so I have to use
2071       gPtr(of the surface layer) instead
2072    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2073    checkpoint50e_pre
2074    
2075    checkpoint50d_post
2076    o change kpp output from multiple-record state files to single-record state
2077      files analogous to write_state.F
2078    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2079      analogous to the cg2d-related output.
2080    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2081      so that writing to internal file fn (with length 512) fails.
2082    checkpoint50d_pre
2083    
2084    checkpoint50c_post
2085    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2086    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2087    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2088    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2089    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2090    
2091    checkpoint50c_pre
2092    Merging from release1_p13:
2093    o bug fix for pkg/seaice dynamic solver
2094    o Added SEAICE_initialHEFF to pkg/seaice
2095    
2096    checkpoint50b_post
2097    o store u*,v* in gU,V instead of in guNm1,gvNm1
2098    o in order to put the momForcing out of the Adams-Bashforth:
2099      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2100      to timestep.F
2101    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2102    o re-generate output for highly sensitive test-exp:
2103       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2104    
2105    checkpoint50b_pre
2106    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2107    o corrected CPP option mismatch in exf_Bulk... functions for case
2108      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2109    
2110    checkpoint50a_post
2111    o Bug fix for merging between c50 and KPP.
2112      ikey was passed from thermodynamics to kpp_calc via
2113      common block rather than being recomputed in kpp_calc,
2114      in contradiction with new key itdkey.
2115      New key ikppkey created, and tamc.h headers updated.
2116    
2117    checkpoint50
2118    - 2nd step of merge with ecco-branch:
2119      merge changes in ecco-branch back into main trunk
2120    - bug fix in find_alpha
2121    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2122    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2123    - merged some sliced AD support routines
2124    
2125    checkpoint49
2126    merged from ecco-branch:
2127    o exf:
2128      - Enable initialisation of forcing fields to constant
2129        (runtime) values.
2130      - in exf_getffields.F
2131        Reduce i-/j-loop to interior domain, discarding overlaps.
2132        That also fixes wrong TAF-key computations for key_1, key_2
2133        with bulf formulae.
2134      - exf_init.F modify #ifdef for exf_init_evap
2135      - exf_getffieldrec.F, ctrl_getrec.F
2136        The following INT-usages are not safe:
2137          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2138          fldcount = int(fldsecs/fldperiod) + 1
2139        and were modified.
2140    o autodiff: checkpoint_lev...
2141      - updated storing for bulk formulae (some arrays were missing)
2142      - added state for seaice package
2143      - synchronized with main branch
2144    o DIVA:
2145      Modif.s in
2146      - the_main_loop.F
2147      - the_model_main.F
2148      and added cost_final_restore.F cost_final_store.F
2149      o With these changes, it is possible to fully separate
2150        the first forward run to compute the cost function (mdthe_main_loop)
2151        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2152        into separate model executions.
2153        This enables better tuning of DIVA to given queue sizes.
2154      o Loss of cost function value in consecutive DIVA runs is
2155        fixed by storing to 'costfinal' file.
2156      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2157        beginning/end of adjoint integration is accounted for.
2158      The current changes apply to TAF-1.4.26.
2159      TAF has one remaining bug, requiring one manual change
2160      (see MITgcm manual).
2161    o cal: synchronized between MAIN and ecco-branch
2162    
2163    checkpoint48i_post
2164    o Changes to restore differentiability of code w.r.t. previous tag
2165      (mostly adding new routines to make list and replacing
2166      pressure by totPhiHyd).
2167    o Updated and merged grdchk package
2168      - has both ADM and TLM checks
2169      - works for single- and multi-proc.
2170      - output cleaned
2171      - worked successfully for parallel DIVA
2172    o genmake:
2173      - Adding -platform=SP4
2174      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2175    o Modif. for DIVA:
2176      ctrl_unpack should not be called in intermediate DIVA interval.
2177      (similar thing would apply for active files such as
2178      tbar, sbar, psbar, which should not be reinitialised;
2179      only relevant for ecco-branch)
2180    
2181    checkpoint48h_post
2182    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2183    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2184    o Added SEAICE_initialHEFF to pkg/seaice
2185    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2186    
2187    checkpoint48g_post
2188    --- EOS:
2189    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2190      store total Potential in totPhyHyd for diagnostics & EOS.
2191    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2192    --- Pressure/geopotential gradient:
2193    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2194    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2195      ( changes results of global_ocean_pressure )
2196    o NLFS + z-coord.: add eta*Rho' contribution.
2197    o accurate phiHyd when using interface-W at the middle between 2 centers
2198     ( changes results of ideal_2D_oce )
2199    o includes r* 2nd term in potential gradient.
2200    
2201    checkpoint48f_post
2202    Merging from release1_p12:
2203    o Modifications for using pkg/exf with pkg/seaice
2204      - improved description of the various forcing configurations
2205      - added basic radiation bulk formulae to pkg/exf
2206      - units/sign fix for evap computation in exf_getffields.F
2207      - updated verification/global_with_exf/results/output.txt
2208    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2209      (SBO) core products, including oceanic mass, center-of-mass,
2210      angular, and bottom pressure (see pkg/sbo/README.sbo).
2211    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2212      to avoid negative values in shallow regions.
2213      - updated verification/natl_box/results/output.txt
2214      - updated verification/lab_sea/results/output.txt
2215    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2216    o Added useSingleCpuIO option (see PARAMS.h).
2217    o Updated useSingleCpuIO option in mdsio_writefield.F to
2218      work with multi-field files, e.g., for single-file pickup.
2219    o pkg/seaice:
2220      - bug fix in growth.F: QNET for no shortwave case
2221      - added HeffFile for specifying initial sea-ice thickness
2222      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2223    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2224      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2225    o pkg/seaice:
2226      - adjoint-friendly modifications
2227      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2228    
2229    checkpoint48e_post
2230    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2231    o dynamics: change definition of computational domain & adapt mom_fluxform
2232      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2233    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2234        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2235        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2236        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2237        inverted_barometer solid-body.cs-32x32x1
2238      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2239    
2240    checkpoint48d_post
2241    o in preparation for r*:
2242     a) use pre-computed gradient of hydrostatic potential:
2243        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2244     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2245        => affects results of glob_oce_pressure (different truncation error)  
2246      update output.txt of ideal_2D_oce & global_ocean_pressure
2247    
2248    checkpoint48d_pre
2249    o in preparation for r*:
2250      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2251      pass the 2 comp. of the grad. as arguments to momentum S/R.
2252      but for the moment, only used if it does not change the results.
2253    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2254    
2255    checkpoint48c_post
2256    Modifications in treatment of initial flux forcing controls
2257    to avoid extra storing of flux fields.
2258    
2259    checkpoint48c_pre
2260    o Added tidal_basin_2d experiment (currently 1D!)
2261    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2262    
2263    checkpoint48b_post
2264    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2265     (modification to pressure gradient not yet implemented)
2266    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2267      (for U & V) that are used for vertical advection of momentum.
2268    
2269    checkpoint48a_post
2270    o In preparation for r*, use temp. array to compute vertical transport
2271       in flux-form momentum pkg. => change results of few test-exp.
2272      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2273                        lab_sea, natl_box & plume_on_slope
2274    
2275    checkpoint48
2276    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2277    
2278    checkpoint47j_post
2279    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2280    o moved adexch from forward_step to addummy_in_stepping
2281    o added exch in ctrl_map_...
2282    o aveFreq.=0. at end of cost_final to avoid overwrite in
2283      reverse checkpointing loop
2284    o Yet more changes in gmredi:
2285      * adgmredi_calc_tensor
2286        avoiding all recomputation of gmredi_slope_limit
2287      * adgmredi_x/y/rtransport
2288        added flag for excessive storing to avoid recomp. of
2289        u/v/rtans, dTdx/y/z
2290        -> this is not really necessary and very memory-consuming
2291      * adgmredi_slope_psi:
2292        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2293      * gmredi_slope_limit
2294        re-activated full calculation of taperfct for case 'ac02'
2295    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2296    
2297    checkpoint47i_post
2298    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2299    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2300      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2301    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2302    o gmredi: fix few bugs.
2303    
2304    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2305    This will be a good checkpoint to plug into the ecco-branch.
2306    o few modif.'s to get latest version adjointed
2307      (mainly kick out code in ini_linear_phisurf)
2308    o modif's to run adjoint with exactConserv
2309    o case GM_BOLUS_ADVEC should be cleaned
2310      S/R gmredi_slope_psi should be cleaned
2311    o verification/carbon now has exactConserv=.TRUE.
2312    
2313    checkpoint47g_post
2314    o time-average AIM output: becomes independent from statvars time-average
2315      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2316    o After TAF bug fix:
2317      Tested adjoint of gmredi package.
2318      Tests were done with checkpoint47 rather than with latest
2319      checkpoint47f_post since the latter is broken for the adjoint
2320      verification/carbon/ contains both ADM and TLM gradient checks.
2321    Here they are, before they get changed/lost/stolen.
2322    Mostly modif.'s to fix numerical sensitivities.
2323    Gradient checks OK for
2324    - GM_taper_scheme:
2325      * clipping
2326      * ac02
2327      * linear
2328      * glw91
2329      * dm95
2330      * ldd97
2331    - GMREDI_OPTIONS:
2332      * GM_VISBECK_VARIABLE_K
2333      * GM_NON_UNITY_DIAGONAL
2334      * GM_EXTRA_DIAGONAL
2335      * GM_BOLUS_ADVEC
2336    in conjunction with data.gmredi parameters to be checked in
2337    in a few minutes under verification/carbon/code/
2338    
2339    checkpoint47f_post
2340    Merging from release1_p10:
2341    o modifications for using pkg/exf with pkg/seaice
2342      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2343        and SEAICE_EXTERNAL_FLUXES
2344      - pkg/exf CPP options EXF_READ_EVAP and
2345        EXF_NO_BULK_COMPUTATIONS
2346      - usage examples are Experiments 8 and 9 in
2347        verification/lab_sea/README
2348      - verification/lab_sea default experiment now uses
2349        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2350    
2351    checkpoint47e_post
2352    o created a tag prior to creating a branch
2353    
2354    checkpoint47d_post
2355    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2356      at the bottom boundary had an erroneous half slip boundary condition
2357    o added bottom drag and no slip boundary condition capabilities to
2358      oceanic pressure coordinates code
2359    o added new verification experiment global_ocean_pressure, this experiment is
2360      also described in the tutorial section of the manual
2361    checkpoint47d_pre
2362    
2363    checkpoint47c_post
2364    o Added a verification experiment for a global cubed-sphere ocean run
2365      -  verification/global_ocean.cubed32x32x30
2366      -  uses pkg/therm_seaice and pkg/bulk_forcing
2367    
2368    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2369    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2370      when using P-coordinate; only implemented for atmospheric config.
2371    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2372      NOTES: requires option NONLIN_FRSURF to be "#define".
2373    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2374    
2375    checkpoint47b_post
2376    Merging from release1_p9:
2377    o pkg/seaice
2378      - removed GOTO's and added taf directives
2379      - double precision constants to reduce the g77 (Linux)
2380        to F77 (SGI) differences reported in release1_p8
2381    o tools/genmake
2382      - added SGI options
2383    o verification/testscript
2384      - updated to that of checkpoint47a_post
2385    o verification/global_ocean.90x40x15/input/eedata
2386      - modified for SGI f77 compatibility
2387    o verification/lab_sea
2388      - added description of sea-ice model
2389      - added missing matlab routines
2390      - added test of thermodynamics parallelization
2391    
2392    checkpoint47a_post
2393    o new pkg: aim_v23
2394     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2395       for now, keep the same surface forcing as before.
2396     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2397     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2398     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2399    o add diagnostic of surface correction term in monitor output
2400    
2401    o bulk_force and therm_seaice
2402    - Two packages:  bulk_force (Bulk forcing)
2403      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2404    - Earlier integration from Stephaine Dutkiewicz
2405      and Patrick Heimbach.
2406    - Two ifdef statements for compile time,
2407       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2408    
2409    checkpoint47
2410    differentiable version of checkpoint46n_post
2411    o bug fix in quasihydrostaticterms
2412    o * "clean" adjoint code (in terms of extensive recomputations)
2413        can now be obtained for all GMREDI options (i.e. for
2414        - GM_VISBECK_VARIABLE_K
2415        - GM_NON_UNITY_DIAGONAL
2416        - GM_EXTRA_DIAGONAL
2417        - GM_BOLUS_ADVEC )
2418      * However, wrong gradient check problem remains unsolved.
2419      * New CPP options have been introduced for different
2420        tapering schemes
2421    o external_fields_load now part of differentiation list
2422    o pressure needs multiple storing;
2423      would be nice to have store_pressure at beginning or
2424      end of forward_step, e.g. by having phiHyd global (5-dim.)
2425      (NB: pressure is needed for certain cases in find_rho,
2426      which is also invoked through convective_adjustment).
2427    o recomputations in find_rho for cases
2428     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2429    o #define ATMOSPHERIC_LOADING should be differentiable
2430    o ini_forcing shifted to begining of initialise_varia
2431    o Incorporating QNVS line search routines into MITgcm
2432      (this is separate code, and therefore not under pkg)
2433      lsopt/, optim/
2434    o Updated verification/carbon/
2435      - #define GM_VISBECK_VARIABLE_K
2436      - GM_taper_scheme    = 'ldd97'    
2437    
2438    checkpoint46n_post
2439    Merging from release1_p8:
2440    o verification/natl_box:
2441      updating new external_fields_load routine
2442    o New package: pkg/seaice
2443      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2444      The sea-ice code is based on Hibler (1979-1980).
2445      Two sea-ice dynamic solvers, ADI and LSR, are included.
2446      In addition to computing prognostic sea-ice variables and diagnosing
2447      the forcing/external data fields that drive the ocean model,
2448      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2449      The implied surface heat flux is then stored in variable
2450      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2451      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2452      non-local transport term.  Because this call precedes model
2453      thermodynamics, temperature under sea-ice may not be "exactly" at
2454      the freezing point by the time theta is dumped or time-averaged.
2455      N.B.: fairly large differences in accuracy occur across
2456            different platforms/compilers; comparison between
2457            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2458            generated output gives:
2459       T           S           U           V
2460      C D M    c        m  s        m  s        m  s        m  s
2461      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2462      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2463      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2464    
2465      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2466    o GAD:
2467      - generated new common blocks to account for call of
2468        same gad routines with differing traceridentities
2469        (needed to modify tracerIdentity indices in GAD.h)
2470      - generated separate common blocks for case useCubedSphereExchange
2471        (Department of Futurology)
2472      - parameter lists to gmredi_?transport: added tracerIdentity
2473      - added new key indices to tamc.h
2474    o external_fields_load:
2475      - added this routine to TAF list
2476      - needed to make some common blocks global and additional storing
2477        along the same lines as exf package (checkpoint_lev?_directives.h)
2478    o exf:
2479      updated external forcing package
2480      - bug fixes carried over from ecco-branch
2481        (missing OBCS_OPTIONS.h in two routines)
2482      - enable easy to use "no forcing".
2483      - added exf I/O for atmospheric loading
2484      - added exf I/O for runoff data
2485      - transfered scaling between exf <-> MITgcm to exf namelist
2486    o Adding new verification experiment global_with_exf.
2487      This verification experiment is almost identical to the
2488      global_ocean.90x40x15 experiment, except that it uses
2489      the exf (and cal) package instead of the
2490      external_fields_load routine (cf README file).
2491    
2492    checkpoint46m_post
2493    o modified testscript to return -- when there are no lines of "%MON" output
2494    o added new flag "quasiHydrostatic" for QH mode
2495      and new routine quasihydrostaticterms()
2496    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2497      New routine: mom_u_coriolis_nh()
2498    o fixed sign of non-hydrostatic metric terms in u and v equations.
2499      Depend on correct sign of gravitySign.
2500    o added work.pc* to .cvsignore in aim directories using ifc
2501    o introduced flag for controllin non-hydrostatic metric terms
2502    o removed gravitySign from PARM04
2503    o switched to g77/ifc from pgf77 in aim experiments
2504    
2505    checkpoint46l_post
2506    o made convective adjustment work with pressure coordinates:
2507     - changed the direction of k-loop in convective_adjustment.F for the
2508       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
2509     - adjusted the reference pressure k-index in convective_adjustment.F
2510     - adjusted the convection condition in convect.F (in analogy to
2511       calc_ivdc.F)
2512     - convective_adjustment no longer computes anything on the halos
2513     - removed the warnings about negative salinity from find_rho.F and
2514       find_alpha.F; instead the new routine look_for_neg_salinity, called
2515       at the beginning of find_rho, find_alpha, and find_beta, does a
2516       check of the entire slice, if CPP-option
2517       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
2518    checkpoint46l_pre
2519    
2520    checkpoint46k_post
2521    o fixed the verification/global_ocean.90x40x15 experiment:
2522     - new bathymetry (the world according to A., JMC, and M.)
2523     - new initial fields and forcing fields (*.bin files)
2524     - new POLY3.COEFFS (for the next release one should switch to a full
2525       equation of state: JMD95P or MDJWF)
2526     - fixed several errors and redundancies in the data file
2527     - experiment uses looped cells
2528     - added matlab directory with diagnostic scripts for plotting of output
2529    
2530    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
2531     - read AIM physics parameters from a file (data.aimphys)
2532     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
2533    
2534    checkpoint46j_post
2535    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
2536    o move wVel computation at the end of the time step, in S/R integr_continuity
2537    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
2538    o update timeave pkg for wVel diagnostic.
2539    checkpoint46j_pre
2540    
2541    checkpoint46i_post
2542    o Clean up AIM package (and keep the results unchanged):
2543      include CPP_OPTION and use IMPLICT NONE in all routines ;
2544      declare all the variables _RL ; use _d 0 for all numerical constants.
2545      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
2546    
2547    checkpoint46h_post
2548    o cleaned up the use of rhoNil and rhoConst.
2549      - rhoNil should only appear in the LINEAR equation of state, everywhere
2550        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
2551        and the dynamical equations are all divided by rhoConst
2552    o introduced new parameter rhoConstFresh, a reference density of fresh
2553      water, to remove the fresh water flux's dependence on rhoNil. The default
2554      value is 999.8 kg/m^3
2555    o cleanup up external_forcing.F and external_forcing_surf.F
2556      - can now be used by both OCEANIC and OCEANICP
2557    checkpoint46h_pre
2558    
2559     Added code to convert surface volume flux (fresh water) into
2560     a mass flux when using P coordinates in the ocean (OCEANICP).
2561     Note: It assumes you have set rho0=rhoConst=density of fresh water.
2562    
2563    checkpoint46g_post
2564    o Include a new diagnostic variable phiHydLow for the ocean model
2565      - in z-coordinates, it is the bottom pressure anomaly
2566      - in p-coordinates, it is the sea surface elevation
2567      - in both cases, these variable have global drift, reflecting the mass
2568        drift in z-coordinates and the volume drift in p-coordinates
2569      - included time averaging for phiHydLow, be aware of the drift!
2570    o depth-dependent computation of Bo_surf for pressure coordinates
2571      in the ocean (buoyancyRelation='OCEANICP')
2572      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
2573        Theta, Salinity, and Pressure in the parameter list. This routine is
2574        presently contained in find_rho.F. This routine does not give the
2575        correct density for 'POLY3', which would be a z-dependent reference
2576        density.
2577    o cleaned up find_rho
2578      - removed obsolete 'eqn' from the parameter list.
2579    o added two new verification experiments: gop and goz
2580      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
2581    checkpoint46g_pre
2582    
2583    checkpoint46f_post
2584    o Enable tangent linear (forward mode) gradient checks:
2585      - extended active file handling to g_... files
2586      - added TANGENT_SIMULATION to theSimulationMode
2587      - extended grdchk package accordingly
2588    o added tangent linear setup in verification/carbon/code_ftl
2589    o added adjoint setup in verification/front_relax/code_ad
2590    
2591    checkpoint46e_post
2592    o Added new equation of state -> MDJWF
2593      - EOS of McDougall et al., 2002, JAOT, submitted
2594      - caveat: the equation of state is only valid for a smaller (more
2595        realistic?) range of values than JMD95P/Z and UNESCO
2596      - added masks to the calculation of pressure in store_pressure
2597      - added more check values for density in check_eos (ini_eos.F), some of
2598        the old check values are out of the range of the MDJWF-eos, so don't
2599        expect perfect matches for those
2600    checkpoint46e_pre
2601    
2602    checkpoint46d_post
2603    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
2604      'OCEANICP', also initialised field pressure correctly in ini_eos in the
2605      case of pressure coordinates. eosType='JMD95Z' in
2606      combination with buoyancyRelation='OCEANICP' now causes an error.
2607    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2608      in find_alpha/beta.
2609    checkpoint46d_pre
2610    
2611    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2612      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
2613    
2614    checkpoint46c_post
2615    o Changes necessary for ocean in p-coordinates
2616     -  Added new buoyancy relation = 'OCEANICP'
2617     -  Added new parameters = gravitySign (this used to be contained inside
2618        the factor dRdZ which I added when we first switched to R coordinates).
2619     X GM/Redi is not compatible (yet)
2620     X bottom drag and no-slip need to be debugged.
2621    checkpoint46c_pre
2622    
2623    checkpoint46b_post
2624    o Added new equation of state -> JMD95Z and JMD95P
2625      - EOS of Jackett and McDougall, 1995, JAOT
2626      - moved all EOS parameters into EOS.h
2627      - new routines ini_eos.F, store_pressure.F
2628    o Added UNESCO EOS, but not recommended because it requires
2629      in-situ temperature (see JMD95)
2630    o Modified formatting for knudsen2.f in utils/knudsen2 and added
2631      unesco.f to be used with POLY3
2632    checkpoint46b_pre
2633    
2634    checkpoint46a_post
2635    o Added (atmospheric) pressure loading
2636      - new field in FFIELDS.h, etc...
2637      - new cpp flag ATMOSPHERIC_LOADING
2638    o Changed hFacC to _hFacC in calc_phi_hyd.F
2639    o Added SHORTWAVE_HEATING to some files for consistency
2640    checkpoint46a_pre
2641    
2642    checkpoint46
2643    further merges from release1_p5
2644    o new ctrl package
2645      - adopted from ECCO environment to enable optimization
2646      - added Eliassen Palm fluxes to controls
2647    o added Eliassen Palm flux controls to gradient check package
2648    o cost package
2649      - Compatible with new ctrl package
2650      - added Eliassen Palm cost hooks
2651      - modif's of existing cost functions
2652    o Adjoint-related bug fixes in kpp:
2653      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
2654      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
2655    o autodiff package
2656      - flow directives:
2657        + new for S/R do_the_model_io
2658        + enhanced for S/R checkpoint
2659        + new gmredi.flow
2660      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
2661        disable adcommon.h/g_common.h by default.
2662      - fixed problem for adjoint of global_max
2663    o modified verification/carbon/
2664    o New setup for adjoint of global_ocean
2665    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
2666    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
2667    o incorporated hooks for sponge layer code (external_forcing.F)
2668    
2669    checkpoint45d_post
2670    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
2671    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
2672      (affects plume_on_slope "cg2d" output)
2673    o add new parameter deltaTfreesurf for free-surface time stepping
2674    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
2675    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
2676    o change phiMin in exp1 (to agree with documentation)
2677    o add new flags:
2678     - T,S forcing inside/outside Adams-Bashforth
2679     - turn off temp,salt advection and/or forcing
2680     - for each tracer, define internal flag for multiDimAdvection & A-B
2681    o monitor: change definition of KE to check conservation of Energy
2682    
2683    checkpoint45c_post
2684    o Removed f90 comments ("!")
2685    o Modified initialisations to enable exf package for MITgcm
2686      (without invoking ECCO_PACKAGE).
2687    o modifications to gradient check package (Martin Losch)
2688      - enable centered differences
2689      - modified format of standard output
2690    
2691    checkpoint45b_post
2692    o cleaned exchange calls in cg2d
2693    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
2694    o included CPP option SINGLE_LAYER_MODE in thermodynamics
2695      to configure barotropic setup (Martin Losch)
2696    o moved some initialisations within bi,bj loop in dynamics
2697      (TAF flow dependency)
2698    o in initialise_varia, moved call packages_init_variables
2699      before convective_adjustment_init
2700      (corresponding adjustment of TAF tape initialisation).
2701    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
2702    
2703    checkpoint45a_post
2704    o compute Rho over the whole domain (extend iMin,jMin indices)
2705    o specific exchange for X-slice domain (case Ny=1)
2706    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
2707    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
2708    
2709    checkpoint44h_post = checkpoint45
2710    o Fix to restore differentiability:
2711      place at which packages_init_variables is called in
2712      initialise_varia is crucial for reverse control flow.
2713    o modifications in GMRedi to enable stable adjoint
2714      (corresponding modif's in thermodynamics, dynamics)
2715    o added missing hook for sponge layer code in external_forcing
2716    o modified test cost functions
2717    o storing in gad_advection (plus removal of write(0,*)!
2718    o missing headers TR1.h added in convective_adjustment routines
2719    o errorMessageUnit set non-equal zero in eeboot
2720      (conflict on some platforms, e.g. IBM SP3)
2721    o modified carbon verif.
2722    
2723    checkpoint44h_pre
2724    o vertical grid option: allow to put the Interface at the middle between
2725      2 cell-centers ; replace delZ in pkg/kpp by drF.
2726    o GM Advective form: Tracers are advected using the residual transport (=
2727      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
2728    
2729    checkpoint44g_post
2730    o fix surface correction term in multiDimAdvection (affects plume_on_slope
2731      results) ; ifdef missing in thermodynamics.F
2732    
2733    checkpoint44f_pre,checkpoint44f_post
2734    o added PTRACERS package
2735      This allows an arbitrary number of passive tracers to be integrated
2736      forward simultaneously with the dynamicaly model.
2737      + Implemented so far:
2738        - basic forward algorithm (time-stepping, advection, diffusion, convection)
2739        - I/O and checkpointing
2740        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
2741      + Not implemented so far:
2742        - KPP
2743        - OBCS
2744      + No specific example supplied (yet) but global_ocean.90x40x15 has the
2745        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
2746        line in data.pkg.
2747      + This package is disabled by default since it increases storage.
2748    
2749    
2750    o testscript: added -cleanup option
2751    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
2752                 b) enable to filter 2D fields.
2753    
2754    checkpoint44e_pre,post
2755    o re-wrote convective adjustment to use pre-calculated weights
2756      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
2757      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
2758      Original calls to convect() still in place.
2759    
2760    chkpt44d_pre,post
2761    o added missing EXCLUDE_MONITOR flags
2762    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
2763      (incompatible typ in MIN/MAX expressions caused problems
2764      on IBM SP3)
2765    o in genmake added variable MAKEDEPEND
2766      plus resetting for case SunOS
2767    o added timer_stats.c routine for IBM SP3
2768    o removed variables in dynamics
2769    !!! I forgot to create tag chkpt44d_pre !!!
2770    !!! But chkpt44d_pre = chkpt44c_post    !!!
2771    
2772    o real fresh water flux implemented with non-linear free-surface.
2773    
2774    chkpt44c_pre,post
2775    o few fix (mask in shap_s2, EmPmR in external_field_load,
2776      USE_NATURAL_BCS in solve_for_P);
2777    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
2778    
2779    checkpoint44b_pre/_post
2780    o merge of relevant stuff from the ecco-branch:
2781      - genmake: removed $S64 overwrite for case SunOS
2782      - pkg/exf: update and corrections for field swapping and obcs
2783      - pkg/ecco: parameter lists for the_model_main, the_main_loop
2784                  harmonized between ECCO and MITgcm
2785      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
2786                      updated checkpointing_lev... lists for obcs
2787      - model/src: minor changes in forward_step, plot_field
2788                   added directive for divided adjoint in the_main_loop
2789      - pkg/mdsio: added mdsio_gl_slice
2790    
2791    o check parameters & config (chkpt44a_pre,post)
2792    o OBC and NonLin_FrSurf.
2793    
2794    checkpoint44
2795    o fix bug in mom_vi_del2uv
2796    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
2797    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
2798    o update AIM experiments (NCEP input files)
2799    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
2800    o added some stuff for AD
2801    
2802    checkpoint43
2803    o added two new advection tests
2804    o added global 4x4 degree ocean test
2805    o added test of H&S94 with free surface on cube
2806    o some final mods for gradient check, adjoint,...
2807    
2808    checkpoint42
2809      Fixed AD-related problems:
2810    o Store directives up-to-date with re-arranged Adams-Bashforth
2811      (mainly thermodynamics.F)
2812    o New store directives for multi-dim. advection schemes
2813      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
2814      * new common block and key passkey
2815      (mainly gad_advection.F)
2816    o Modified store directives for split of dynamics/thermodynamics
2817      for the case ALLOW_KPP
2818    o Cleaned argument list for timestep_tracer.F
2819    
2820    checkpoint41
2821    o re-formatted/added comments in prologues of key subroutines
2822      to work with protex
2823    
2824    checkpoint40
2825    o moved calc_gs, calc_gt and calc_tr1 back to model/src
2826    o added FLT (floats) package from Arne along with demo. experiment
2827    o re-arranged Adams-Bashforth scheme for tracers to allow easier
2828      implementation of forward-in-time forcing terms
2829    o more mods for non-linear free-surface including new variable
2830    o modified multi-dim method to work on cube
2831    o bug fix in KPP (from DM)
2832    
2833    checkpoint40pre9
2834    o added DST advection schemes
2835    o fix MPI bug on SGI's
2836    o modifications for non-linear free-surface
2837    o fixed conditionals for fixed flow/passive tracer only mode
2838    o added tension/strain form of stress tensor
2839    o changes to commenting of arguments for TAF/TAMC
2840    o added/updated many matlab scripts
2841    o added multi-dimensional advection method for tracers
2842      
2843    checkpoint40pre8
2844    o new package rw/
2845      Added method for dumping intermediate local arrays:
2846      mdsio_writetile - same as mdsio_writefield except works from inside
2847                        bi,bj loop
2848      mdsio_writelocal - same as mdsio_writetile except works for local
2849                         arrays
2850      write_local_r? - higher-level wrapper for mdsio_writelocal
2851      Controlled by diagFreq. Defaults to zero (ie. no dumps)
2852      Example given at end of mom_vecinv.F that dumps some local arrays.
2853    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
2854      control flux-form versus vector invariant code.
2855      Switch is runtime flag vectorInvariantMomentum (defaults to false)
2856      or genmake -DISABLE ...
2857    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
2858      (additional storing is now needed for case vecinv;
2859      currently nothing implemented to switch this storing off
2860      in case fluxform is used since no CPP flag available).
2861    
2862    checkpoint40pre7
2863    o bug fix in dynamics.F
2864      calc_viscosity called before k=1,Nr loop.
2865    o added some #ifdef's ALLOW_PASSIVE_TRACER
2866    o cleaned initialisations in ctrl_map_ini
2867      related to TAF
2868    
2869    checkpoint40pre6
2870    o split dynamics into thermodynamics & dynamics
2871    o corresponding split of calc_diffusivity into
2872      calc_diffusivity, calc_viscosity
2873      (kpp_calc_diff, kpp_calc_visc).
2874    o Added diffkr, kapgm to control variables
2875    o bug fix in gmredi_slope_limit for ldd97
2876    
2877    checkpoint40pre5
2878    o proper initialization of Adams-Bashforth time stepping
2879      + uses forward step for very first step of model (iter=0)
2880    o re-generated *all* output since almost all output is modified by this
2881      change (sorry but we've been putting this one off for about 2 years)
2882      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
2883        *not* regenerated since they are already out of date and I don't
2884        want to create the impression that they are suddenly working.
2885    o removed KAP stuff for DEC's
2886    o modified/added many .cvsignore files in */code and */input
2887    o added new expt "solid-body.cs-32x32x1"
2888      + this uses an alternative form of ini_curvilinear_grid.F which
2889        is not necessarily any better than the current one...
2890    
2891    checkpoint40pre4
2892    o added re-initialisations of utrans,vtrans,rtrans in
2893      calc_common_factors which are crucial for TAF.
2894    o extended iMin,jMin range for calc_common_factors,
2895      calc_diffusivity
2896    o added option ALLOW_PASSIVE_TRACER
2897    o a few minor updates and fixes
2898    
2899    checkpoint40pre3
2900    o created calc_gtr1.F for gad package
2901    o split the_main_loop and re-introduced forward_step
2902    o some recomputations of nIter0 for TAMC
2903    
2904    checkpoint40pre2
2905    o Updated to latest branch of AJA, JMC
2906    o Added gradient check package
2907    o Added routines for passive tracer handling
2908    o Added carbon sequestration sensitivity experiment
2909    
2910    checkpoint39
2911     o Modifications and fixes to support TAMC
2912       (mainly missing or wrong directives)
2913     o Corrected common blocks when fooling TAMC to produce adjoint I/O
2914       in addummy_in_stepping
2915     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
2916     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
2917     o Included following packages:
2918       cal: calendar
2919       exf: external forcing
2920       ecco: essential routines to control use of cal, exf
2921             (NB: this is not the full ECCO environment)
2922     o disabled some packages by default in genmake
2923    
2924    checkpoint38
2925     o see notes_c37_adj.txt
2926     o corrected wrong layer index in external_forcing_t
2927     o replaced the_main_loop/forward_step by the_main_loop
2928     o removed forceoutput from write_state
2929       (replaced criteria for initial/final state)
2930     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
2931    
2932    checkpoint37
2933     o mdsio.F routine split and packaged in pkg/mdsio
2934       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
2935        used unless genmake -disable=mdsio)
2936     o allow a more precise surface-geopotential gradient for the atmosphere
2937       taking into account the change in space of Alpha (=1/rho) at the surface.
2938     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
2939       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
2940     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
2941       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
2942       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
2943     o Time-Average diagnostics defined as a pseudo package "timeave".
2944     o pickup files : old pickup (before c35) did not work with new code (c35
2945       and after) unless activating 2 commented lines in initialise-varia.
2946     o Non-Hydrostatic pickup file Pb fixed.
2947     o bug with Rigid-lid version (since c35) fixed.  
2948    
2949    checkpoint36
2950     o implement Crank-Nickelson barotropic time-stepping
2951     o recover Time-Average diagnostics
2952     o fix Pb in checkpoint (PR#19)
2953     o AIM become a standard package ; clean unused CPP_kees
2954    
2955    checkpoint35
2956     o subtantial rewrite of dynamics.f
2957     o allows staggered time-stepping
2958     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
2959     o added bottom drag (linear + quadratic)
2960    
2961    checkpoint34
2962     o Modified exchange routines for correct reverse simulation.
2963     o Added verification output to comply with bug fix in impldiff.F
2964       as of c33 (exp2, natl_box).
2965     o Corrected store directives in dynamics.F
2966     o Corrected array boundaries in impldiff.F
2967     o Corrected array dimensions in gmredi.
2968       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
2969     o Added routine GLOBAL_SUM_INT to global_sum.F
2970     o Added mdsio_gl.F for ECCO purposes.
2971    
2972    checkpoint33
2973     o Fixed bug in lower BC in impldiff.F
2974     o Fixed confusion about units of forcing arrays in FFIELDS.h
2975       namely Fu,Fv,Qnet,Qsw,EmPmR:
2976       - Removed verification/natl_box/code/external_fields_scale.F
2977         (did not differ from that in model/src)
2978       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
2979         (see FFIELDS.h for description)
2980       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
2981         kpp_calc.F and kpp_transport_t.F
2982       - Removed model/src/external_fields_scale.F and calls to it
2983       - verification/natl_box uses flux data with "atmospheric" sign so
2984         a special version of external_fields_load.F is used to
2985         change the data as it's read in. This way, the arrays
2986         have the right units and signs at all times tha a user could
2987         possibly use them.
2988     o Corrected genmake to delete a temporary file during configuration
2989    
2990    checkpoint32
2991     o Scaling of forcing fields moved from external_forcing.F to
2992       external_fields_scale.F, called directly after loading fields.
2993     o Surface relaxation terms added to surface tendency fields in
2994       extra subroutine.
2995     o impldiff.F changed to avoid storing by TAMC of huge intermediate
2996       fields.
2997     o Changes in GMRedi to comply with packaging structure.
2998     o Modifications and bug fixes in KPP package.
2999     o Verification experiment for KPP added (verification/nat_box/)
3000    
3001    checkpoint31
3002     o Packages interface brought in line with defined standard
3003       -> new routines packages_...F
3004       -> changes in initialise_fixed.F, initialise_varia.F
3005       -> enables initialisation interface for ECCO package
3006     o Rescaling of external forcing fields immediately after read
3007       (removed from external_forcing.F)
3008       -> new: surface_fields_scale.F
3009       -> affects ini_foorcing.F, external_fields_load.F
3010     o Computation of surface tendencies before tendency updates.
3011       -> new: external_forcing_surf.F
3012     o Change of variable names useGMRedi, useKPP, useECCO
3013     o Further changes in dynamics.F, impldiff.F for TAMC
3014     o Tested for experiments 0, 2, 4.
3015       - not yet tested for GMRedi.
3016       - not yet tested for KPP.
3017    
3018    checkpoint30
3019     o Updates for OBCs
3020     o New experiment for test OBCs (internal_wave)
3021     o New output.txt in verification/exp4/results/
3022     o Updates for KPP: calculation of viscosity corrected, new variables
3023       kpp_dumpFreq and kpp_taveFreq
3024     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
3025       and entry for T90 in genmake
3026    
3027    checkpoint29
3028     o packaged KPP and GM/Redi
3029    
3030    checkpoint28
3031     o Corrected initialization of hFacMin for difference vertical coordinates
3032     o Modified calculation of partial cell thickness to more robust algorithm
3033     o config_summary.F: replaced write_1D_... by write_0D_...
3034       read_write.F: added subroutines write_0D_...
3035     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
3036       included some initialisations required for TAMC.
3037     o routine calc_isoslopes: modified sqrt computation to make it
3038       differentiable for zero argument.
3039     o routines dynamics, impldiff:
3040       included store directives and tape key computations required for TAMC.
3041     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
3042    
3043  checkpoint27  checkpoint27
3044   o fixed calc_isoslopes() to so that cancellation of terms in tensor   o fixed calc_isoslopes() to so that cancellation of terms in tensor
3045     formulation works properly with variable resolution.     formulation works properly with variable resolution.

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