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revision 1.5 by cnh, Mon Jun 15 05:13:55 1998 UTC revision 1.767 by jmc, Tue Feb 6 22:19:51 2007 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
8      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
9      following the great-circle arc between those 2 points.
10    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
11      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
12    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
13     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
14     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
15     - still needs work (not working with some options ; efficiency to improve)
16       and serious testing.
17     - use this scheme for temperature & salinity in 2 advection test exp.:
18       advect_xy & advect_xz, respectively.
19    
20    checkpoint58u_post
21    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
22    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
23    o testreport: add option "-skipdir" to skip some test.
24    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
25      momentum calculation.
26    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
27    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
28      remove checkpoint.F and the_correction_step.F (no longer used);
29      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
30    o add option (linFSConserveTr) to correct for tracer source/sink due to
31      Linear Free surface
32    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
33    o pkg/thsice: fix reading mnc-pickups
34    
35    checkpoint58t_post
36    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
37    o pkg/mdsio:
38     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
39       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
40       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
41     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
42     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
43       either MDS_READ_FIELD or MDS_WRITE_FIELD )
44     - new S/R (to replace MDSWRITEMETA), which allows to write more
45       informations (variable names, time ...) to meta files.
46     - modify rdmds.m to give back the meta file content.
47    o pkg/diagnostics: change vertical interpolation to be safer, and more
48       flexible (define p-levels to interpolate to in data.diagnostics);
49      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
50       diagnostic pointer.
51    o pkg/seaice: more cleaning up of seaice_growth, added many comments
52    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
53    o fix multi-category seaice:
54     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
55       SEAICE_MULTICATEGORY
56     - fix short wave heat flux
57    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
58       and allow to use EVP solver. Change forward lab_sea: test both EVP
59       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
60    o Initial check-in of lab_sea adjoint
61      (very similar to natl_box_adjoint/code_seaice)
62      * used C-grid and EVP solver
63      * used KPP, GM/Redi
64      * uses inAdExact=.TRUE.
65      * gradient checks fail for both ADM and TLM
66        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
67        f.d. gradients actually seem more problematic than ADM, TLM gradients;
68        issue is related to forward mismatch between g77 an ifort
69    o pkg/seaice: overhaul of thermodynamics
70     - growth.F and groatb.F are replaced by new routine seaice_growth.F
71     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
72     - move a few global fields out of SEAICE.h into seaice_growth.F and
73       make them 2D (FICE/QNETO/ ...)
74     - remove FO (it is the same as QNETO)
75     - introduce a few local fields to avoid modifying external fields such
76       as atemp, etc.
77    
78    checkpoint58s_post
79    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
80      changed exf_set_gen.F so that
81        genperiod=0 means input file is one time-constant field and
82        genperiod=-12 means input file contains 12 monthly means
83    o CG2D: use pre-computed solver main-diagonal (stored in common block);
84      this affects truncation error ; generate new output file for exp. which
85      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
86        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
87        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
88        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
89        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
90        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
91    o start implementation of deep-atmosphere and anelastic formulation
92    o verification: remove 2nd copy of input files and use script "prepare_run"
93      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
94    o mom_common/vecinv/fluxform: fix a few initialisation isssues
95    o profiles: fix for multithreaded case
96    
97    o diagnostics: rename few diags:
98      s/'PRESSURE'/'RCENTER '/g
99      s/'TICE    '/'oceFreez'/g
100      s/'TAUX    '/'oceTAUX '/g
101      s/'TAUY    '/'oceTAUY '/g
102      s/'SWFLUX  '/'oceQsw  '/g
103      s/DIFx/DFxE/g
104      s/DIFy/DFyE/g
105      and add few ocean-forcing diagnostics:
106      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
107    o modifications to pkg/seaice/growth.F and budget.F, which change results of
108      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
109      as actual snow thickness.  It now refers everywhere to effective snow
110      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
111    
112    checkpoint58r_post
113    o modifications to pkg/seaice/growth.F, which change results of
114      lab_sea experiment: fixes pertain to melting snow over open water, to
115      masking EVAP under sea ice, and to using the correct AREA variable for
116      computations of EVAP, PRECIP, HSNOW, and GHEFF
117    o add ability to read bathy, salt, and theta using MNC (off by def)
118    o add flooding algorithm and advection of HSNOW for pkg/seaice;
119      both are turned off by default and do no change any results
120    o seaice advection with pkg/thsice: a step toward the use of non-linear
121      advection scheme, but #ifdef or commented out for now (requires more EXCH).
122    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
123      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
124      in natl_box (affects results @ truncation level: update output.txt)
125    o multi-threading and IO:
126      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
127      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
128        (needed to work with SingleCpuIO): tested in all verif. exp.
129    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
130      affects the results (but none of the verification test uses this scheme).
131    o Adding some pkg/diagnostics capability to pkg/seaice
132      (will certainly be subject to changes)
133    o ctrl: adding new control variables:
134      lwflux, lwdown, evap, snowprecip, apressure, runoff
135    
136    checkpoint58q_post
137    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
138      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
139      high_res_cube configuration by 4% on Columbia.
140    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
141      add (in global_with_exf/code) a version of EXF_INTERP_READ without
142      dynamical allocation (seems to work in multi-threaded).
143    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
144      single CPU io) so that TAF does not have to see EESUPPORT.h
145    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
146    
147    checkpoint58p_post
148    o obcs: stop if obcs is used with useCDscheme = .true.
149    o shelfice:
150     - fix a sign error so that no slip at shelfice interface works
151     - remove stop for combination non-hydrostatic code and shelfice. That does
152       not mean, that the results are correct, but at least they are numerically
153       stable
154    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
155    o added adjoint exch routined for all exch*3d* routines
156      and updated flow directives
157    
158    checkpoint58o_post
159    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
160      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
161    o change controling S/R for writing pickup file (new S/R do_write_pickup)
162      and clean-up reading/writing of pickup files.
163    o fix local version of read/write pickup (NH part) in rotating_tank/code
164    o simplify EXCH interface:
165     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
166     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
167    o added the regrid package
168    o shelfice:
169     - add a simple boundary layer scheme to reduce noise
170     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
171    
172    checkpoint58n_post
173    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
174       local variable (not in common block).
175    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
176      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
177      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
178        to work with SingleCpuIO.
179    o add "_d 0" to real constant of pkg/cfc subroutines ;
180       update exp. cfc_exemple & tutorial_cfc_offline output files.
181    o multi-threading and IO:
182      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
183        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
184      - barrier before and after reading.
185      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
186      - avoid using MDS_WRITELOCAL for LAND pkg output.
187      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
188        common-block variables ; Allows multi-threading with master-thread IO.
189    o change default MAX_NO_THREADS from 32 to 4 ;
190      and stop cleanly when MAX_NO_THREADS is too small.
191    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
192    
193    checkpoint58m_post
194    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
195       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
196    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
197       keep global_ocean.90x40x15 (for AD testing) with former secondary test
198       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
199    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
200        add MITgcm_tutorials (= code + all the tutorials)
201    o ecco, option to compute cost for total ssh (mean+anom)
202    o consistent with addition of ptracer and ssh in pkg/profiles
203    o profiles: adding ptracer and ssh
204    o testreport: change multi-test output-file name
205      (from output.txt.{name} to output.{name}.txt)
206    o profiles: now ok for mutli-tiles case
207    o seaice: add 4 parameters for different advection schemes for area,
208      (effective) seaice thickness, enthalphy, and snow height. Their default
209      is the standard parameter SEAICEadvScheme
210    o calc_gw:
211     - add cosFacU in zonal viscous flux (harmonic.visc.).
212     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
213       of tutorial_plume_on_slope.
214    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
215    o calc_gw: true flux-form, account for horizontal grid spacing.
216      update rotating_tank results, but not plume_on_slope (affected at
217      truncation level, 11 digits).
218    
219    checkpoint58l_post
220    o calc_gw:
221     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
222     - remove side-drag for now (need to fix it); update plume_on_slope results.
223     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
224    o commit code to make SST/SSS weights spatially variable
225      (based on either variable in-situ or variable initial T/S weights)
226    o pkg/ecco:
227      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
228        now based on horizontally varying weights wthetaLev, wsaltLev
229      * cost_averagesflags now returns year indices in addition to day, month
230      * sflux balance is performed on annual basis
231        (sflxumm, sfluxmm2, bal_sfluxmm)
232      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
233        including separate counting and multipliers
234    o pkg/rbcs
235      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
236    
237    checkpoint58k_post
238    o testreport:
239     - always build in dir. "build" (if not there, mkdir build instead of building
240       & running in input)
241     - run in dir run (if it exists), in build otherwise.
242     - call prepare_run (if input/prepare_run exists)
243     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
244    o pkg/exf modifications to interpolation and rotation routines for more
245       reasonable treatment of North Pole singularity: for tracers North Pole
246       value is set to northernmost zonal-mean value, for zonal velocity it is
247       set to zero, and for meridional velocity it is set to northernmost value.
248    o pkg/exf/exf_check_range.F
249     - add tile index to diagnostics and move stop statement to the very
250       end of the routine.
251    o pkg/diagnostics: (diagnostics_main_init.F)
252      define title of isomorphic variables according to the current config.
253    o pkg/thsice with pkg/seaice dynamics:
254    - fix domain of computation (interior only, required for exf) and do exchanges
255    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
256    o towards a standard way of dealing with multi-threading in MONITOR
257      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
258    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
259       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
260    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
261    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
262    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
263       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
264    o tracer advection:
265     - clean-up and simplify calc_common_factors.F
266     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
267       advection subroutine (but still not used within DST advection S/R)
268    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
269    
270    checkpoint58j_post
271    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
272      from file (collects calls previously in FORWARD_STEP)
273    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
274    o adjoint store dir. adjusted accordingly
275    o genmake2
276      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
277    
278    checkpoint58i_post
279    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
280      on wind stress (SEAICEstressFactor defaults to 1.)
281    o Total number of Timers is finite (<=40): comment out 2 non-essential one
282      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
283    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
284      on CS-grid: no longer loosing mass.
285    o exf & curvilinear-grid: no longer modify longitude xC & xG.
286    o pkg/ggl90: fix sloppy output and fix a bug
287    o pkg/seaice: added SEAICEuseEVPpickup parameter
288      - Set to false in order to start EVP solver with
289        non-EVP pickup files when using SEAICEuseEVP
290      - fix sign error in diffusion in seaice_calc_rhs
291    
292    checkpoint58h_post
293    * Modifications for bottom topography control
294      o replace hFacC by _hFacC at various places
295      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
296      o add non-self-adjoint cg2d_nsa
297      o update autodiff support routines
298      o re-initialise hfac after ctrl_depth_ini
299      o works for 5x5 box, doesnt work for global_ocean.90x40x15
300    * Adding verification for 5x5 box (4-layer) bottom topography control
301    
302    checkpoint58g_post
303    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
304       used for mean seasonal cycle, mean diurnal cycle); add an example
305       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
306    o pkg/ggl90:
307      - add parameter (minimum surface kinetic energy)
308      - fix bug (avoiding division by zero)
309    o couple pkg/thsice to pkg/seaice:
310      - modify advection in seaice to accomodate new scalar fields to be advected
311      - only muliDimAdection scheme work with seaice/thsice
312      - mapping of thsice-variables to seaice-variables, back and forth
313      - does not break the verification experiments, but does not give the
314        desired results either
315    o pkg/seaice
316      - make (default) second order advection a bit less confusing?
317    
318    checkpoint58f_post
319    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
320      to pkg/seaice):
321      - new routines thsice_map_exf and thsice_get_exf provide the interface
322      - add an additional formal parameter to thsice_solve4temp
323    o pkg/exf:
324      - add new fields wspeed, snowprecip (to be able to couple to thsice)
325      - correct Stefan-Boltzmann constant
326      - new parameter for longwave surface emittance
327      - separate some stuff from exf_bulkformulae into new routines  
328        exf_radiation, exf_wind
329      - add new parameters and constants: longwave emissivity for ocean, ice
330        and snow, evaporation parameters over ice
331      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
332        either wind from stress or stress from wind
333    o pkg/thSIce:
334    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
335    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
336       and THSICE_CALC_THICKN
337    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
338    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
339      to make debugging easier.
340    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
341    o pkg/bulk_force:
342      - clean-up comments and parameters ;
343      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
344    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
345      generate new output for test-experiment: aim.5l_cs.thSI
346    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
347      testreport accordingly
348    
349    checkpoint58e_post
350    o SEAICE_CGRID adjoint done
351    o R_STAR adjoint implemented.
352      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
353      * need to sort out init. of h0facc, etc.
354    o Make pkg/profile fully independent of ecco,cost, etc. stuff
355      to be able to use it in pure forward.
356    
357    checkpoint58d_post
358    o upgrade simple test-experiment to tutorial example:
359     step.1: duplicate the experiment and (step.2) will remove the old copy.
360      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
361      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
362      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
363      tutorial_global_oce_biogeo    <- copy of dic_example
364      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
365      tutorial_plume_on_slope       <- copy of plume_on_slope
366      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
367      tutorial_global_oce_optim     <- empty for now (David ?)
368      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
369     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
370    o correct a sign problem in cost_scat.F
371    o obcs and ptracers: fix boundary conditions for advections schemes
372      with larger stencil
373    o thsice adjoint: start
374    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
375      completeness
376    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
377      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
378    o ptracers adjoint:
379      * avoid extensive recomputatations
380      * fix missing re-init. of gptr (missed by TAF)
381    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
382      me to turn off the excessive output to STDOUT that this package produces
383    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
384      and add those terms in Vector-Invariant formulation.
385    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
386      if the control period (xx_hfluxperiod etc) is 0
387    o in profiles pkg, clean routines and fix details
388    o in ecco pkg, reading ssh data:
389      fix problem in case the model does not start at iter0=0
390    o fix mnc-pickup/restart for ptracers
391    o new package prifiles:
392      code to compute profile-based cost by Gael Forget
393      (modifs in ecco, ctrl, autodiff)
394    o Benign bug fix in initialization (spotted by M. Mazloff) of
395      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
396    
397    checkpoint58c_post
398    o adjoint: finish NLFS adjoint and provide reference output in
399      verification/global_ocean.90x40x15/results_ad_nlfs
400    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
401      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
402      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
403      with SEAICE_CGRID defined.
404    o move calendarDumps from "data" to "data.cal" and clean-up the code
405      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
406    o add useEXF & useCAL flags (for now, set in hard-coded way)
407    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
408      (were missing in NH mode, and wrong in quasihydrostatic mode).
409      waiting for Chris updated version of calc_gw to add those CALLs.
410    o fix bug in quasihydrostatic S/R ;
411      add a test for this option: global_ocean.90x40x15.qshyd
412    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
413      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
414    o add on/off flag useOffLine for package OFFLINE
415    o seaice:
416      - modify advection so that it works also on the C-grid
417      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
418        problem in multi-tile runs with C-grid
419      - add flags for clipping ice velocities and/or masking solver forcing
420      - fix drag (ocean on ice) formulation and a bug that caused noise in the
421        C-grid solver
422      - added a few comments to seaice_diffusion.F
423      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
424        are now exclusive)
425      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
426        required re-ordering the code a little:
427       + make DAIRN global variable (defined in SEAICE)
428       + move computation of the viscosities eta and zeta into a new separate
429         routine (because I need to recompute them in seaice_ocean_stress.F)
430    
431    checkpoint58b_post
432    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
433      update output.txt of exp. aim.5l_cs.thSI
434    o various mnc cleanups and improvements:
435      + shrink lookup tables by factor of ~4
436      + better error reporting when running out of lookup space
437      + able to handle longer path/file names (up to 500 chars)
438    o adjoint:
439      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
440      - TBD: "hidden" mom_vecinv recomp. in dynamics
441    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
442     (allow to differentiate between forcing components using new integer flags:
443      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
444     and add new flag to put Dissipation tendency out of Adams-Bashforth.
445    o ecco
446      - enable trend removal from SSH anomaly obs.
447    o adjoint
448      - a fix for PmEpR when #undef EXACT_CONSERV
449      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
450      - try to fix "hidden" recomp. in forward_step for NLFS
451        (NLFS seems broken sometimes after I checked it in)
452    o seaice:
453     - add c-grid version of the dynamic solver:
454       + three new routines that are the c-grid substitute lsr, dynsolver
455         and ostres
456       + put a few fields that were local to dynsolver into global common
457         blocks, so that I can move the computation of stresses etc into
458         seaice_lsr (saves coding but may break the adjoint).
459     - replace more hardwired parameters by runtime parameters
460     - add ice masks that mask the rhs of the implicit solvers where there
461       is no ice (commented out in seaice_dynsolver, because i am not sure
462       if this works properly), eventually this should replace the clipping
463       of ice velocities in seaice_dynsolver to +/-40cm/s.
464    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
465      include it only where its needed
466    o move balancing of fluxes before the call of external_forcing_surf
467    o seaice:
468      - correct units of turning angles (now they are really in degrees)
469      - move computation of GWATX/Y out of main routine into dynsolver
470      - initialize GWATX/Y in seaice_init
471    o Apply mask on Fresh-Water flux (needed for SSH forcing).
472      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
473    o seaice: add runtime flags for turning angles (default to zero)
474    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
475      and trend from exf forcing and ctrl control adjustments
476    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
477      (since checkpoint57x_post)
478    o change the default rotation period to 86164.s = the Earth rotation
479    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
480      and based on a reference stratification. Tested within hs94.cs-32x32x5.
481    o seaice advection: add code for choosing between the default (2nd order
482      central differences) and multiDim advection schemes provided by
483      pkg/generic_advdiff
484    o seaice:
485      - removed all references to SEAICE_GRID.h fields from
486        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
487        (cubed-sphere configuration will change a little)
488      - grid computations in seaice_init are obsolete now.
489      - cleaned up code a little so that is easier to read (hopefully).
490      - added new (better?) discretizations of default advection and diffusion
491        (turn on with SEAICEuseFluxForm)
492      - replace 1 in 3d global fields by kSurface in growth.F
493      
494    checkpoint58a_post
495    o seaice:
496      - bug fix in advect.F
497    o shelfice:
498      - separate shelfice load anomaly from pload (breaks with time
499        dependent forcing), => introduce constant field shelficeLoadAnomaly.
500        Its default is 0., but it may be computed more cleverly from (unknown)
501        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
502        done offline. A good approximation of the pressure load anomaly is
503        necessary to avoid large initial adjustment processes underneath
504        deep-reaching shelfice.
505      - small fix in ISOMIP shelfice_thermodynamics
506      - add more sophisticated thermodynamics of Hellmer (1989), this is
507        now the default
508      - give a few constants more intuitive names
509    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
510      if bulk formulae are used in long integration (especially EmPmR). Turn
511      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
512      if balancePrintMean, the imbalance that is substracted is printed to
513      STDOUT.
514    o fix bug (typo) in obcs_apply_eta.F
515    o add a new package shelfice which enables us to model the circulation
516      underneath shelf-ice with draughts of hundreds of meters.
517     - works
518     - to do: + include improved thermodynamics
519              + check whether kSurfC (from model/inc/SURFACE.h) can be used
520                instead of new field kTopC
521              + can we use topoFile, Ro_surf and existing code in ini_depth.F
522                instead of new field R_shelfIce and new code in ini_depth.F
523                and ini_mask_etc.F?
524              + adjust vertical mixing schemes?
525    o seaice pkg:
526     - add a cpp-flag to include a simple formula for a salinity dependent
527       freezing point of sea water at the surface
528     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
529       meridional stresses are now different (and hopefully correct)
530    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
531       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
532       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
533    o pkg/diagnostics: add options and parameters for regional-statistics
534       diagnostics ; define regions by reading a region-mask from a file
535       (might add other options later)
536    o pkg/bulk_force:
537     - add option and parameters to use AIM surface-flux formulae.
538     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
539       others forcing fields (defined in PARM05, parameter file "data") are loaded
540       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
541     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
542     - use the right EXCH call for uwind,vwind (to work on CS-grid).
543     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
544       and parameters (note: calcWindStress replaces .NOT.readwindstress).
545     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
546    
547    checkpoint58
548    o add "--embed-source" option to genmake2 which, when the supporting
549      tools can be compiled (as determined by genmake2) will turn on the
550      embed_files package which then embeds the entire MITgcm source code
551      (*.[fFhc] + Makefile) used for the build within the executable
552      - requested by CNH but off by default
553      - adds a paltry <9MB to the mitgcmuv executable in most cases
554      - only writes the output when useEMBEDSRC in eedata is true
555    o clean up 3-dim. relaxation codes:
556      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
557      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
558      * Thanks to Tom Haine for testing!
559    
560    checkpoint57z_post
561    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
562      affects output (@ truncation level) of exp. plume_on_slope ; updated.
563    o fix the pickup behavior for obcs in combination with ptracers
564    o fix a bug in ptracers_external_fields_load
565    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
566      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
567    o transfered surface NH pressure to eta field (if exactConserv).
568    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
569         and update lab_sea output.txt file.
570    o completing 3-dim. relaxation code: additional term
571         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
572      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
573      * At compile time, in "EXF_OPTIONS.h" set
574          #define  ALLOW_CLIMTEMP_RELAXATION
575          #define  ALLOW_CLIMSALT_RELAXATION
576      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
577          tauThetaClimRelax3Dim = 15552000.0,
578          tauSaltClimRelax3Dim  = 15552000.0,
579      * 3 cases:
580          1) Use a constant-in-time 3-dim. field
581          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
582          3) Real-time relax. to time-evolving prescribed field
583    o Adding Laplacian-type smoothness constraint on
584      initial and boundary (forcing) controls (ic, bc)
585      * enable at compile-time via
586        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
587      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
588      * Absolute scale somewhat unclear so far
589      * no area weighting was included since no other cost term does so far
590    
591    checkpoint57y_post
592    First step for a NLFS adjoint
593    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
594    o new init. routines for calc_r_star, calc_surf_dr
595    o still need to deal with ini_masks_etc
596    o testreport seemed happy
597    checkpoint57y_pre
598    
599    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
600    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
601    o add new offset feature to offline pkg (plus minor cleanup)
602    o cfc fixes for final year of integration
603    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
604      be in GCHEM_OPTIONS).
605    
606    checkpoint57x_post
607    o fix testreport Pb in multiple test experiment.
608    o cleanup our namelist syntax in verification:
609      - make it more F95 standards compliant (some work still needed)
610      - allows the vast majority of our tests to work with gfortran
611    o Non-Hydrostatic:
612     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
613     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
614    o Allow to apply AB on T,S rather than on AB(gT,gS):
615     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
616     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
617       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
618     - need a "clever" read_pickup to restart from the other AB formulation
619    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
620    o remove some unused variables (reduces number of compiler warnings)
621    o adjoint
622      * Disable useVariableViscosity for adjoint for time being
623        (there are a number of extensive recomputations)
624      * Initialize certain variables needed for adjoint
625    
626    checkpoint57w_post
627    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
628                 fix the singleCpuIO RS version of MDSWRITEFIELD
629       and add a WARNING if using globalFiles=T with multi-processors.
630    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
631      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
632    o tracer advection scheme:
633      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
634       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
635       was not very convenient).
636      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
637       (further tests needed for the implicit DST & Flux-Limiter schemes).
638    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
639      and sRef for convenience, handy, when you want to initialize
640      ptracers in a large domain with a constant non-zero value. Also,
641      untangle ptracers_init.F a little.
642    
643    checkpoint57v_post
644    o change dome exp. to use variable viscosity in side-drag terms.
645    o remove all the files from the cfc_offline test since they are now
646      incorporated into tutorial_cfc_offline which has been producing
647      identical results for a few days of testing
648    o add new parameter: sideDragFactor to enable half-slip-side BC
649      and change side-drag S/R to use viscosity from mom_calc_visc
650      (can switch back by setting sideDragFactor=0.); affects results at
651      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
652       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
653    o vorticity & strain are now computed without masking, to account for
654      no-slip-side BC in variable viscosity calculation ; mask is applied
655      anyway later on, before computing advection/coriolis terms.
656    o modify exp4 to test new obcs support for reading from external files
657      and for passive tracers
658    o fix behavior of ptracers_monitor when monitor output is written to a
659      netcdf-file; still not independent of monitor.F (writes in the same
660      file).
661    o change default value of tRef (put a uniform, meaningful value for ocean
662      & atmos) and initialize sRef (was missing, as Martin mentioned).
663    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
664      to be proportional to enstrophy dissipation length.  Thus,
665       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
666      This is now consistent with Smagorinsky and with the manual.
667    
668    checkpoint57u_post
669    o OBCS and PTRACERS: add open boundary support for passive tracers
670      - either use homogenous (pseudo) v.Neumann conditions or prescribe
671        OB-values from file; this is not different from the way theta and salinity
672        are treated
673      - however, Orlanski-radiation conditions are not supported, and the model
674        will stop if you use pTracers and Orlanski at the same time.
675      - beefed up the rountine obcs_external_fields_load: now only those open
676        boundary values are overwritten with values from files for which there
677        are really files, otherwise the OB-fields remain untouched. This makes
678        it possible to use different OBs at different ends of the domain (as
679        with EXF)
680    o reduce number of exch calls in shap_filt (s2).
681    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
682      truncation level) 4/5 MLAdjust test results (11&12 digits match).
683    
684    checkpoint57t_post
685    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
686    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
687      same truncation, independent of the face number: affects affects several
688      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
689    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
690      note that biharmonic viscosity + no-slip was not tested in any experiment.
691    o fix bug in non-linear free-surf side-drag ; generate new output for
692      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
693    o make mnc honor the writeBinaryPrec flag for most kinds of output
694    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
695    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
696      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
697    o add brackets in multi-terms sum to get same truncation, independent of
698      the face number (manage to get exactly same value of gU,gV at the cs-edge)
699      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
700    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
701      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
702      a maximum grid-scale Reynolds number.  Also, changes all length calculations
703      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
704      Suggested values of viscosity parameters found in mom_calc_visc.
705      Many new viscosity diagnostics available.
706    
707    checkpoint57s_post
708    o Add clearing-house for viscosity calculations, mom_calc_visc and
709      correct numerous bugs in LeithD and Smagorinsky discretizations.  
710      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
711      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
712      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
713      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
714      The Strain-Tension form is now called with useStrainTensonVisc=.true.
715      ViscAhStrain and viscAhTension are now retired.
716    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
717    o In response to JMC's bug report, genmake2 now ignores any soft-links
718      that it finds in the *current* directory when searching for files.
719      Soft-links found in any other source directories will still work as
720      they did before.
721    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
722      a C routine to unlimit the stack size
723    o mnc-ify pkg/aim snapshot vars
724    o mnc-ify pkg/land as requested by Daniel
725    o various changes to mnc including:
726      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
727      - output can now be grouped so that all files within a group
728          change the ITER portion of their names in lock-step together
729      - can now read ("global") PER-FACE (in addition to PER-TILE) files
730          and works with both EXCH1 and EXCH2 (but needs more testing)
731      - writing works for all verification test cases w/ g77 on Linux
732    
733    checkpoint57r_post
734    o make MNC variable initialization happen earlier
735    o add diagnostics for (almost) each term of the momentum Eq.
736    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
737    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
738    o remove MINIMAL_TAVE_OUTPUT option ;
739      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
740    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
741      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
742    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
743    o add time-dependent SST, SSS control
744    o cost terms in ecco/ modularized (new cost_generic.F)
745    o cost_averages routines are modularized (new cost_averagesgeneric.F)
746    o new infrastructure for seaice model vs. obs misfits in seaice/
747      * driver from the_main_loop.F is seaice_cost_driver.F
748      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
749      * gradient check in Exp. 6a of natl_box_adjoint/
750    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
751      (see README file)
752    
753    checkpoint57q_post
754    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
755    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
756      - bug was reported by Jean-Michel and Ian Fenty
757    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
758      update exp. cpl_aim+ocn output.
759    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
760      Needed for high-res. runs with large global files
761      to be able to limit tapelev size
762    o Changed some tests for adjoint:
763      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
764      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
765      * global_ocean.90x40x15/ back to default 3-level checkpointing
766    o Modifications to enable scripted COMMON to MODULE conversion
767      * verification/OpenAD/code/ has necessary scripts and description;
768      * converts, compiles and runs successfully;
769    
770    checkpoint57p_post
771    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
772    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
773      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
774    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
775    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
776      (was already the case for dissipation with mom_vecinv,
777       and also the case for grad.PhiHyd when staggered-timeStep)
778      This will allow to put dissipation out-off the AB time-stepping.
779     Unfortunately, affects truncation error. Update output of exp. that "fails"
780      (cg2d matching number) and leave the others for later: front_relax(10),
781      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
782      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
783    
784    checkpoint57o_post
785    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
786      (2) its ready to be documented during the 20050801 DocFest
787    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
788      for ideal_2D_oce and lab_sea on linux_ia32_g77
789    o set to #undef CTRL_SET_OLD_MAXCVARS_30
790      in global1x1_tot/code_seaice_adj to access indices 32, 33
791      (worth another tag)
792    
793    checkpoint57n_post
794    o adding precip control xx_precip 32
795    o adding swflux control xx_swflux 33
796    o Replacing 10 forcing penalty cost routines by 1 generic.
797    o Implementing partitioning in time-mean and variable adjustment
798      for atmos. state.
799    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
800    o in natl_box_adjoint:
801      * updated exp 1 to 10
802        (but does not have time-mean vs. variable split results yet)
803    o updated global1x1/*_seaice_adj/
804      to incorporate latest changes
805    o enable useSingleCpuIO for mdsio vector routines
806      (applies in particular to tapelev I/O)
807    o removed inefficient K-loop in all active_file*control*.F
808    
809    checkpoint57m_post
810    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
811      and advect_cs (use EXCH-2 and standard cs-32 grid files).
812    o pkg/exch2: filling of face-corner halo regions is optional
813      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
814    
815    checkpoint57l_post
816     tag before updating tutorials (pre-release-2)
817    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
818       for output and interpolation of input fields onto model grid)
819    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
820       Affects results of exp. rotating_tank ; update output.txt.
821    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
822          and taking the square quantity and/or using a fraction-weight field.
823    o fix aim_diagnostics_init.F mate numbers.
824    o add mnc output capability to diagnostics/diagstat and update
825      our cvsignore files for the ACSII output generated
826    
827    checkpoint57k_post
828    o lab_sea now uses diagnostics package and provides a suite of
829      new EXF diagnostics output.
830    
831    checkpoint57j_post
832    o exf
833      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
834        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
835        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
836      * extended diagnostics output
837        - now includes all EXF variables
838        - hs, hl moved to common block
839        - separate S/R for diagnostics, called after ctrl vector is added
840        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
841        - EXFqnet contains true Qnet (i.e. includes qsw)
842      * updated verif. lab_sea, global_with_exf
843      * Rearranging hflux (exf_mapfields -> exf_getforcing)
844        to ensure that diagnostics sees a true EXFqnet
845    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
846    o diagnostics pkg: change pointers so that 1 diagnostic can be used
847      several times with different frequencies.
848    o mnc-ify the thsice package as requested by Daniel Enderton
849      - the monitor--MNC output needs work
850      - many attributes need to be added (most are currently blank)
851    o mnc-ify theaim_v23 package as requested by Daniel Enderton
852      - many attributes need to be added (most are currently blank)
853    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
854    o add Sadourny like discretization to the 4th.O vorticity advection scheme
855    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
856      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
857         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
858    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
859     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
860    
861    checkpoint57i_post
862    o Diagnostics package was changed: diagnostic allocation is now deactivated
863      by setting an empty file name in the namelist (used to be by setting 0 frequency)
864    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
865      add 1rst Order upwind vertical Shear.
866    o add a quick fix for A/B checkpointing in OFFLINE mode
867    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
868      end-run around the C/Fortran linking horror in eesup/src/timers.F
869    o added pkg/runclock: allows user to terminate run based on wall clock
870    o added non-hydrostatic scaling parameter: nh_am2
871    o pkg/my82: futile attempt to make results compiler-independent by adding
872      some "_d 0", etc. no effect.
873    o for mnc output, fill the 'T' coordinate var with myTime and create a
874      separate 'iter' variable for iteration count
875    o pkg/diagnostics:
876      add new capability: output of Global/Regional & per-level statistics ;
877      tested against monitor output (including land & thSIce) on various exp.
878    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
879    
880    checkpoint57h_done
881      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
882      data.diagnostics, data.gchem, data.ptracers) is done.
883    
884    o pkg/diagnostics: prepare for Global/Regional statistics.
885      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
886    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
887      and rename it: DIFFERENT_MULTIPLE
888    
889    checkpoint57h_post
890    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
891    o pkg/diagnostics: change output frequency, now in seconds (instead
892      of Nb of iterations). This requires to change data.diagnostics.
893    checkpoint57h_pre
894    
895    o in mnc, let the user create the output dir if both mnc_outdir_date
896      and mnc_outdir_num are false
897    o add fflags() to pkg/diagnostics which allows one to specify, on a
898      per-file basis, the file precision [default behavior is unchanged]
899    o added diagnostics to pkg/kpp, including computation of mixed layer
900      depth based on a temperature/density criterion
901    o updated verification/natl_box to test the new pkg/kpp diagnostics
902    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
903    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
904    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
905      not mnc -- this mistake was found by JMC and is now corrected
906    
907    checkpoint57g_post
908    o add Adams-Bashforth 3rd Order time stepping:
909      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
910      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
911    checkpoint57g_pre
912    
913    o make lambda[Theta,Salt]ClimRelax spatially varying
914      (default remains spatially uniform constant based on tau)
915    o added new control variables
916      * init. uVel, vVel, etanN
917      * lambda[Theta,Salt]ClimRelax
918    o separate masks used for ctrl_pack/unpack 'from write_grid' output
919      (suggested by G. Forget)
920    
921    checkpoint57f_post
922    o add parameter "baseTime" = model base time = time at iteration zero
923      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
924      account for baseTime shift
925    o move Coriolis arrays from PARAMS.h to GRID.h
926    checkpoint57f_pre
927    
928    o mnc-ifying the seaice package
929    o introduced an alternative length scale calculation for use in the limiting
930      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
931    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
932    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
933      as well as grad(vort3).  Made it compatible with both approximate form
934      for the cubed sphere and full form of these gradients.  Added flag
935      useFullLeith to select between approximate and full form.  
936    o add "d0" in getcon.F to reduce differences between compilers/platforms
937      update output.txt of exp. fizhi-gridalt-hs
938    o change port_rand funtion to allow to set the seed.
939    o fix obscure MNC bug involving conversion between reals and integers
940      - it caused no problems with certain (eg. gcc, ifc) compilers but the
941        new version is now more standards-compliant
942    o adjoint-related modifications
943      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
944      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
945      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
946    
947    checkpoint57e_post
948    o Adding eddy stress controls a la Ferreira et al.
949    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
950    
951    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
952      update output.txt of exp. fizhi-gridalt-hs
953    o add more "Z" dimensions and associated coordinate vars to MNC
954    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
955    o parameter calendarDumps: when set, approximate months (30-31 days) and years
956      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
957      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
958      months and years.  Requires pkg/cal.
959    o diagnostics: add pickup functionality
960      - off by default for backwards compatibility
961      - current version only uses MDSIO -- MNC will be added
962    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
963    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
964    
965    checkpoint57d_post
966    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
967    o modify verification/ideal_2D_oce so that it tests the creation of mnc
968      output from the diagnostics package
969    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
970    o make genmake2 more portable by using ".$FS" instead of ".f" for more
971      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
972    o add coordinate variables to the MNC output from the diagnostics package
973    o change MNC-flags default value: true when useMNC=TRUE
974    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
975      the ability (off by default) to read the grid information using MNC
976    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
977    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
978    o do snap-shot diagnostics at the middle of the time-interval (instead of
979      at the end).
980    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
981      new test for AIM with thSIce + slab-ocean
982    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
983    o move state variable diagnostics to the beginning of the time step ;
984      (note: still needs some work specially for snap-shot diagnostics)
985      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
986    
987    checkpoint57c_post
988    o Change testing option (-ieee) to get closer agreement between g77 & ifort
989    o generate new output.txt files on faulks with g77 & the new -ieee option
990    checkpoint57c_pre
991    
992    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
993      update output.txt of exp. global_ocean.90x40x15
994    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
995      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
996    o add saltFlux(+File) forcing capability with periodicExternalForcing
997    o allow to use pkg diagnostics for GM-Redi & ThSIce output
998    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
999    o improvements for the MNC output from DIAGNOSTICS:
1000      - correct handling of the unlimitied dimension
1001      - all dims now have associated coordinate variables
1002      - variables located at U, V, and Corner ("Z") points are now written
1003        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1004        *all* data points are output
1005    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1006    o added pkg/seaice/seaice_monitor.F
1007    o mdsio_readfield.F can now read files visible only to master MPI process.
1008    o pkg/seaice: some test code for ice-modified ocean stress
1009    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1010      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1011      spurious negative numbers for precipitation and humidity.  Will cause
1012      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1013    o pkg/ctrl/
1014      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1015        May be enabled via doPackDiag
1016      *  introduce z-scaling of
1017         + gradient (doZscalePack) and
1018         + control (doZscaleUnpack)
1019    o pkg/mdsio/
1020      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1021      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1022    
1023    checkpoint57b_post
1024    o simplify options in diagnostics_fill arguments (remove weird combinations)
1025    o fix MNC coordinate variables so that they now contain per-face index
1026      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1027      general, EXCH2 grids are only aligned to a "local" coordinate system
1028    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1029    o Implement instantaneous output within pkg diagnostics:
1030      setting a negative frequency in data.diagnostics produces
1031     "snap-shot" output (as opposed to time-average if freq > 0)
1032    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1033      NOTE: change ptracer diagnostics name: use 2 characters to work with
1034            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1035    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1036      becomes the coordinate variable for the 'T' dimension
1037    o add CF-style coordinate variables to MNC
1038      - just a first cut:  numbers are meaningless on the cubesphere and
1039        missing along the T axis but otherwise it works!
1040    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1041    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1042    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1043      this is based directly on what the model compute, so that the content of
1044      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1045    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1046    o clean up build options files for SunOS, in particular
1047      - remove -traditional from xmakedepend
1048      - change -xarch=v9 to -xarch=native for f77
1049      - restore use of make (not gmake)
1050      - add CC=gcc if using g77
1051    o changes per discussion of AM, JMC, & EH3 today:
1052      - move redundant "grid" variables out of "state" -- in preparation of
1053        creating proper CF-style coordinate variables and in recognition
1054        that any/all grid variables can be easily copied (eg. w/NCO) from
1055        the grid files into any of the other NetCDF files
1056      - *always* output grid variables with MDSIO (this will eventually be
1057        changed)
1058      - output MNC grid file if useMNC is true
1059    o every instance of _END_MASTER() has been found and replaced with
1060      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1061      preprocessors
1062    o re-arrange diagnostics pkg initialisation:
1063     - allow each package to extend the available diagnostics list
1064     - add some checking and fix small problems (multi-threaded, ...)
1065     - new S/R diagnostics_fill (replace fill_diagnostics):
1066       look through the short list of active diag. (instead of the long list)
1067       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1068    
1069    checkpoint57a_post
1070    o this set of changes restores TAMC compatibility
1071      tested for global_ocean.90x40x15 adjoint on trough
1072      (what a pain)
1073    
1074    checkpoint57a_pre
1075    o some modifs in tools/build_options for sunos
1076    o call ctrl_pack for ctrl at end for optimcycle=0
1077    
1078    checkpoint57
1079    o add horizontal bi-harmonic viscosity for vertical velocity
1080      - new parameter viscA4W (defaults to viscA4)
1081      - affects only non-hydrostatic code
1082      - to be done: no-slip lateral boundary conditions
1083    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1084    o implement Implicit Vertical advection for pTracers
1085    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1086      (implemented also for implicit vertical diffusion & advection)
1087    o OBCS: extend application of tracer open boundary conditions
1088      to a strip beyond the boundary of width Olx/Oly
1089    o add call monitor to TAF set of required calls (flow directives)
1090      and include in natl_box_adjoint
1091    o untangle a few ifdefs related to cost, ctrl, autodiff
1092      untangel a few ALLOW_ECCO_OPTIMIZATION
1093    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1094      (theta2, salt2 in ecco_cost_weights)
1095    
1096    checkpoint56c_post
1097    o OBCS as control variables
1098      - update ctrl_ad_diff.list, obcs_ad_diff.list
1099      - remove balance of obcs controls from default
1100      - fix index bug nobcs in ctrl_init
1101      - fix dummy fields filen in ctrl_pack
1102      - add dummy weights for obcs
1103    o lsopt: comment out fort.94 output
1104    o optim:
1105      - remove unnecessary header files
1106      - adjusted namelists
1107      - add xerbla.F to Makefile
1108    o exf:
1109      - multiple modifications of exf_check_range
1110      - unit change in exf_init_runoff from [m/year] to [m/s]
1111    o mdsio:
1112      - i/o-vector change debugLevel from debLevA to debLevB
1113    
1114    checkpoint56b_post
1115    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1116      is called from DO_THE_MODEL_IO
1117      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1118      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1119      - clean up PTRACERS_WRITE_TIMEAVE a little
1120    o add another verification experiment that tests both the cfc-pkg and
1121      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1122      reactive tendencies treated inline with regular timestepping
1123    o testreport previously did a lousy job of comparing small numbers, so
1124      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1125      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1126      testreport.
1127    o ptracers_monitor: bug fix for MPI
1128    
1129    checkpoint56a_post
1130    o GCHEM: finish reorganizating the package
1131      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1132        (introduces another 3D-array for each passive tracer, but only if
1133        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1134        gchemTendency is not needed because the timestep is done separately)
1135      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1136      - GCHEM is now---more or less cleanly---separate from PTRACERS
1137      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1138        so clear to me how that should be done in a general way.
1139    o CFC: improve formatting of output in CFC_ATMOS
1140    o PTRACERS:
1141      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1142        that ALL experiments with ptracers enable can be checked. This makes
1143        GCHEM_MONITOR obsolete.
1144      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1145        monitorFreq
1146      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1147    o add PTRACERS (PTR0[1-5]) to testreport output
1148    o exf_check_range:
1149      * default changed to .TRUE.
1150      * will check values for niter0 if debLevA, every timestep if debLevB
1151      * STOP in exf_check_range if 'out of range'
1152      * range chosen generous to allow for potential extema
1153      TBD: a version with stricter range
1154           permitted range would be runtime parameters
1155    o GMredi:
1156      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1157      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1158      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1159    o GCHEM:
1160      - move call to GCHEM_FORCING_SEP, so that it is now called before
1161        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1162      - introduced a useGCHEM runtime flag and applied it everywhere.
1163      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1164        this flag is now only visible within GCHEM-pkg routines.
1165      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1166        be replaced by a 3D array that is computed before thermodynamics; for
1167        this, the tracer ID iTracer had to be included into the parameter list
1168        of ptracers_forcing
1169      - set up forward_step to call gchem_forcing, that will replace
1170        gchem_forcing_int in ptracers_forcing
1171      - cleaning up
1172    o small cleaning of exch2: remove files that are also in eesupp/src
1173    
1174    checkpoint56
1175    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1176    o mnc: cleanup "full" files--fixes out-of-memory problem
1177    o ECCO-GODAE
1178      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1179      * fully merged and updated from SIO code
1180        windstress sign change affects
1181        - exf_inscal_[u/v]stress
1182        - sign of xx_tau[u/v] adjustments
1183        - signs in cost_scat
1184      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1185      * natl_box_adjoint updated and compressed
1186      * 2-level checkpoint switch added
1187        (tested in EXP. 1 of natl_box_adjoint)
1188      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1189    o SVD
1190      * first complete, non-hacked version for SVD calculations
1191      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1192        performed via direct access files admtlm_vector.it????
1193        (via ctrl_[un]pack)
1194      * optimcycle is used for ARPACK iteration counter
1195        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1196      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1197        and add linear transforms where necessary
1198      * controls are initial/final SST, SSS (can be extended; need to check
1199        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1200    o mdsio: filename info to both stderr, stdout
1201    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1202      from sign change
1203    
1204    checkpoint55j_post
1205    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1206      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1207    o add consistent build directories and .cvsignore files to verification
1208    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1209    o make all subroutines 30 or less characters in length for certain older
1210      compilers to work (a thorough search only turns up two routines in
1211      pkg/ptracers)
1212    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1213      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1214    
1215    checkpoint55i_post
1216    o change arrays for total vertical diffusivity (2.D if explicit,
1217      3.D if implicit) ; each ptracer uses its own background value.
1218    o added mnc/NetCDF output capability to ocn_compon_interf
1219      - added bits to verification/cpl_aim+ocn so that it can run on
1220        ITRDA and other clusters without the mpirun "-wd" option
1221    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1222      configuration
1223    o give MNC the ability to create additional files rather than
1224      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1225      - the default is just less than 2GB which is a practical limit
1226        on many systems
1227    o Compute the non-local term using either KPP vertical diffusivity (=default)
1228       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1229    
1230    checkpoint55h_post
1231    o add verification test "vermix"
1232    o remove all the *_ioinc flags and replace with the single global
1233      outputTypesInclusive flag
1234    o allow to set a vertical profile of vertical diffusivity for T & S
1235    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1236    o useMNC moved from data.mnc to data.pkg
1237    
1238    checkpoint55g_post
1239    o Renaming carbon AD experiments to comply with testreport conventions
1240    o Updating adjoint of Held-Suarez hs94.1x64x5
1241    o Fixing directives for non-ECCO forward_step, after ECCO directives
1242      have been fixed to avoid recomp. of do_oceanic_phys
1243      Works well for global_ocean.90x40x15,
1244      but recomp. issue remains for carbon
1245    o Updating adjoint output for natl_box_adjoint after
1246      pkg/ecco has been modified (see taga c55d_post)
1247    
1248    checkpoint55f_post
1249    o rename to timeave_init_fixed
1250    
1251    checkpoint55e_post
1252    o some delicate re-shuffle of store directives to avoid one
1253      extra call of do_oceanic_physics
1254      affects ecco_the_main_loop.F, do_oceanic_physics.F
1255      checkpoint_lev1_directives.h
1256    o NB: this may break global_ocean adjoint temporarily,
1257      but it is clear how to fix it. Will do later, need this now.
1258    
1259    checkpoint55d_post
1260    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1261    o ecco_cost_weights is modified to 1x1 runs
1262    o modifs to allow observations to be read in as
1263      single file or yearly files
1264    o enable to read exf forcing fields as either
1265      single file or yearly files (flag useExfYearlyFields)
1266    checkpoint55d_pre
1267    
1268    o switch between 2-level and 3-level checkpointing
1269    o add ability of MNC to write local and "partial" (eg. 2D slices where
1270      the full 3D field is never actually stored) arrays to NetCDF files
1271      with the correct (that is, the complete multi-dimensional) set of
1272      array indicies
1273      - used in mom_vecinv() to write the diagFreq output
1274      - tested (demonstrated) in verification/aim.5l_cs
1275    o further mnc-ification
1276      - add verification/lab_sea to the list with mnc setups
1277      - fix undefined mnc v-names in cd_code
1278      - add kpp to mnc output (both snapshot and timeave)
1279    o non-hydrostatic code
1280      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1281        in calc_gw.F
1282      - defaults to viscAh
1283      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1284        friction or Leith) in non-hydrostatic mode, as long as there is
1285        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1286    o pkg/cost
1287      extend simple cost functions to treat time mean quantities
1288      (T,U,V) via cost_accumulate_state from cost_tile
1289    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1290        be 2 times larger than the minimum size the advection scheme requires.
1291        now get a perfect conservation of salt in advect_cs test-exp (updated)
1292    o GGL90 (Gaspar's TKE mixed layer)
1293      - add horizontal diffusion of TKE, requires exchanges in
1294        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1295        default. In OPA there is no horizontal diffusion of TKE but the
1296        mixing coefficients are computed from a horizontal average of TKE of
1297        6 points or so. I think that diffusion has a little more physical
1298        justification.
1299      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1300        was in vain)
1301      - mask tke-variable in ggl90_init
1302    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1303    o fix biharmonic diffusion on CS-grid.
1304    o more obcs stuff
1305      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1306        for reading boundary values. This routine is called from
1307        obcs_prescribe_read
1308      - updated obcs_check
1309      - changed sponge layer relaxation parameter units for days to seconds
1310      - turned off sponge layer by default
1311      - changed argument list of OBCS_CALC to myTime+deltaTclock
1312      - fixed about 35 bugs in obcs_external_fields_load
1313    
1314    checkpoint55c_post
1315    o obcs stuff
1316      - new runtime flags useOBCSprescribe, useOBCSbalance
1317      - re-arranged obcs_calc
1318      - moved exf_getobcs to obcs_prescibe_read
1319        obcs_prescibe_read is called after ORLANSKI stuff
1320        and independent of it (executable can contain all).
1321      - updated obcs_check
1322      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1323        These may be necessary only if tangential velocities are
1324        prescribed at OB, not sure, needs testing.
1325    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1326      which simplifies the calls and passes the ifc check-bounds test
1327    
1328    checkpoint55b_post
1329    o add a 2D scalar, Z location, exchange_2 routine.
1330    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1331      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1332      affects advect_cs results (for the wrong reason): update output.txt
1333    o use a more standard discretization for biharmonic viscosity ;
1334     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1335      affects results of dome set-up: update output.txt
1336    o fix gad_advection.F (CubedSphere part), back to version 1.23
1337    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1338    
1339    checkpoint55a_post
1340    o merged code to
1341      * prescribe/read time-dependent open boundaries
1342        (works in conjunction with exf, cal)
1343      * sponge layer code for open boundaries
1344      * each boundary N/S/E/W now has its own CPP option
1345        (healthy for the adjoint)
1346    
1347    checkpoint55
1348    o up-to-date adjoint of previous breaks
1349      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1350      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1351      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1352      - carbon: * remove tr1-related adjoint verification
1353                * add ptracer as control variable
1354    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1355      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1356    
1357    checkpoint54f_post
1358    o in verification/carbin/ remove experiment related to
1359      ALLOW_PASSIVE_TRACER (array tr1 etc)
1360      code_ad/ input_ad/ results_ad
1361    
1362    o add two new packages
1363      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1364        + subject to optimization (memory)
1365      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1366        + subject to reordering (many GOTOs in the original code)
1367        + so far opps is called for every (i,j) point, and then operates in
1368          the vertical; one may want to reorder the scheme in order operate in
1369          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1370          fields)
1371    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1372      - all verification tests compile and run with linux_ia32_g77
1373      - defaults are compatible with current input files--nothing
1374        should change if you were not previously using MNC
1375      - MNC output has been added in numerous places (eg. timeave)
1376        but there are still a few writes not yet do-able with MNC
1377        (this is in progress)
1378      - flags now allow for either/or/both use of MDSIO and MNC and
1379        documentation will soon follow
1380      - numerous small formatting cleanups for ProTeX
1381    o add version info (via BUILD_INFO.h) to MNC and stdout
1382    
1383    checkpoint54e_post
1384    o add two new packages
1385      - pp81 (Packanowski and Philander, 1981), Richardson number and
1386        stratification dependent mixing
1387      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1388      - these scheme operate in a similar manner as KPP (without ghat, of
1389        course), however there is only one diffusivity that is used for both
1390        temperature and salinity (and passive tracers)ç
1391    o add offline package
1392    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1393      provided by Stephanie Dutkiewicz
1394    o genmake2: add ability to search for C compilers and cleanup test output
1395      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1396    
1397    checkpoint54d_post
1398    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1399    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1400      leading to additional shift by 5 days each year of integration
1401       (i.e. leading to considerable offset over the years)
1402    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1403    o start with no AB and no initial filtering (staggerTimeStep):
1404      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1405    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1406      (external loading & cpl import/export stay in forward_step.F)
1407    o update coupling interface to work with new staggerTimeStep
1408    o change MDSIO ptracers_pickup.
1409    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1410    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1411    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1412    
1413    checkpoint54c_post
1414    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1415      this affects (truncation error) output.txt of test-exp:
1416       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1417    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1418    o change Qnet to always be the net heat flux, (+upward).
1419      affects (truncation error) output of natl_box exp.: updated
1420    o define the max number of passive tracers in PTRACERS_SIZE.h
1421    o start to test mnc routinely in exp0
1422    o add sea-ice loading (sIceLoad) as a new forcing field.
1423    
1424    checkpoint54b_post
1425    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1426       impressive on Altix and Opteron systems)
1427    o diagnostics can now write NetCDF files through the mnc package
1428    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1429    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1430    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1431      affects (truncation error) output of lab_sea & natl_box exp.: updated
1432    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1433    
1434    checkpoint54a_post
1435    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1436    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1437    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1438    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1439      + internal_wave (shift in writing cg2d_ini_res)
1440    checkpoint54a_pre
1441    
1442    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1443      - modified verification/lab_sea and natl_box_adjoint accordingly
1444    
1445    checkpoint54
1446    checkpoint53g_post
1447    o prepare splitting of thermodynamics: store convect.counter in common block
1448    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1449      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1450    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1451    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1452    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1453    o restore adjointability
1454    
1455    checkpoint53f_post
1456    o modifications that affect AIM experiment results (update output.txt):
1457      - no advection of S at top interface Nr (pkg/generic_advdiff)
1458      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1459    o AIM pkg:
1460      - include stability function into surf.Flux derivative relative to Tsurf
1461      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1462    
1463    checkpoint53e_post
1464    o merged cylindrical coord configuration
1465    o added rotating_tank experiment
1466    checkpoint53e_pre
1467    
1468    checkpoint53d_post
1469    o faulks upgraded: re-generate output.txt that have changed:
1470       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1471    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1472    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1473    o added Sadourny discretization of Coriolis
1474      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1475      - re-enabled use of omega3 (useAbsVorticity)
1476    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1477      vector-invariant equations
1478      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1479    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1480      hopefully without new bugs
1481      - still to do: biharmonic friction for non-hydrostatic w
1482    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1483    o regenerated output for global_ocean_ebm (using -ieee)
1484    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1485      of mom_common/
1486      - simple re-arrangement of instructions within computing loop
1487    checkpoint53d_pre
1488    
1489    checkpoint53c_post
1490    o new version of coupler for AIM+thSIce and Ocean models
1491     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1492     - land: change Evaporation of snow
1493     - aim with thSIce: fix bug in snow-precip.
1494    o changes to calc_gw.F
1495     - bug fix for w^2 term near the bottom boundary
1496     - (hopefully) improve the lateral slip boundary condtions for use with
1497        partial/looped cells
1498      - because the bug fix changes two verification experiments anyway (exp5
1499        and plume on slope), change the lateral boundary condition from half slip
1500        to the value of no_slip_sides
1501    o ebm package wasnt quite up to the parallel task. Fixed that.
1502    o Adjoint of EBM package + verification
1503      * TLM OK
1504      * ADM not sufficient accuracy yet (needs further testing)
1505    
1506    checkpoint53b_post
1507    o Commiting new energy balance model to repository
1508      * package is pkg/ebm
1509      * verif. is verification/global_ocean_ebm
1510      * references are in ebm_driver.F
1511    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1512    C        Global thermohaline circulation. Part I:
1513    C        Sensitivity to atmospheric moisture transport.
1514    C        J. Climate 12(1), 71-82
1515    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1516    C        Global thermohaline circulation. Part II:
1517    C        Sensitivity with interactive transport.
1518    C        J. Climate 12(1), 83-91
1519    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1520    C        Destabilization of the thermohaline circulation
1521    C        by atmospheric eddy transports.
1522    C        J. Climate 7(12), 1870-1882
1523    o Will need long integration testing.
1524    checkpoint53b_pre
1525    
1526    o created pkg/mom_common in preparation for variable viscosity code
1527    o renamed and split ini_mnc_io
1528    o pkg/land: only liquid water can diffuse or run-off
1529    o AIM using land: soil wetness availability account for snow
1530    o added printMapIncludesZeros to EEPARMS namelist
1531    
1532    checkpoint53a_post
1533    o restore TAMC compatiility for exf_constants.h
1534      (no usage of _d in .h)
1535    o Additional storing in KPP in an attempt to fix
1536      TAMC problem with adjoint of KPP code.
1537      (no success...)
1538      Identical code works fine with TAF.
1539    o Fixed verification/natl_box_adjoint experiments.
1540      Initial conditions for Experiments 4 and 5 are now
1541      set to "SEAICE_initialHEFF=0", which is more reasonable,
1542      and hence gives results closer to that of Experiment 2.
1543      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1544    
1545    checkpoint53
1546    o stable checkpoint with up to date adjoint
1547      TLM tests only run for 1st grdchk at the moment. Its unclear if
1548      this is a code problem or a problem with resetting code for g_
1549      variables that is being autogenerated wrong.
1550      Otherwise:
1551       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1552       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1553         are both still in chaos following their security messes.
1554    
1555    checkpoint52n_post
1556    o various build (mostly genmake2) changes including:
1557      - ability to build/run more easily within Cygwin and MacOS X
1558      - more complicated Makefiles with a stronger dependence on Gnu Make
1559    o pkg/seaice modifications
1560      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1561        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1562        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1563      - changed proxy for geostrophic velocity and updated
1564        verification/lab_sea/results/* accordingly
1565      - removed ADI dynamic solver from pkg/seaice
1566      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1567        they caused a segmentation fault under certain circumstances
1568      - removed unused field WATR
1569    o bug fix in exf-package:
1570      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1571         now reflect that.
1572    o small fixes in the cal-package:
1573      - set reference date to first of January for the 'model'-calendar
1574      - failing of cal_CheckDate in cal_FullDate now actually results in a
1575        warning
1576    o small modifications in exf-package to increase flexibility:
1577      - change climtempfreeze from a constant to a runtime parameter that
1578        is specified in data.exf_clim (default = -1.9)
1579      - introduce runtime parameter windstressmax (default = 2.0) that is
1580        specified in data.exf
1581    o fix in pkg/thsice:
1582      - update Evap (Tsf changes) to be consistent with Latent heat flux
1583      - maintain snow precipitation unchanged (even if Tsf >=0).
1584     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1585    
1586    checkpoint52m_post
1587    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1588      this does not change any of the results, because myIter=0 in swfrac always
1589      lead to jwtype=2 (the default anyway), but the call makes little sense
1590      as a default
1591    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1592    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1593      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1594    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1595    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1596    o extending useSingleCpuIO option to work with new exch2 I/O format
1597      - old-style, missing-tile I/O is still accessible by defining CPP
1598        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1599    o monitor package can write to NetCDF files and/or STDOUT
1600    o fix re-definition bug in MNC_GRID_INIT_ALL()
1601    o doc/api_reference added
1602      - a framework for building an API Reference Manual using all
1603        the "protex" comments embedded in the code
1604      - see pkg/generic_advdiff, pkg/mnc for examples
1605    o MNC:
1606      - make myThid the last argument for all subroutines
1607      - new default for the grid files: NO halos
1608      - add useMNC and other run-time flags
1609      - separate per-file-group handling of the unlimited dimension
1610      - early initialization of MNC w/ flags read at the eeboot stage
1611        and lookup tables set in initialize_fixed
1612      - write all MNC output to a freshly-created directory
1613    o thermodynamics sea-ice (thsice) is now tested with testreport.
1614    o test exp. advect_cs: use the standard cs32 grid ; update output.
1615    o Added functionality to grdchk:
1616      pick global i,j,k position (or nearest wet) where to perform check.
1617    
1618    checkpoint52l_post
1619    o new land formulation:
1620      a) use ground enthalpy as prognostic variable to ensure exact
1621         energy conservation.
1622      b) account for water temperature and for latent heat of freezing
1623         in all processes (rain, run-off, ground storage)
1624      c) compute surface and ground temperature implicitly.
1625    o aim_v23 modification for new land model:
1626      a) Treat separately land / ocean / sea-ice surface fluxes
1627         to allow implicit computation of land & sea-ice surface temp.
1628      b) add snow precipitation.
1629    checkpoint52l_pre
1630    
1631    o fix problem (when 1 tile is empty) in min/max monitor.
1632    o fix bug in timeAve (u,vZetatave in common block)
1633    o no restoring terms under ice for pkg/seaice
1634    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1635    o bug fix for pkg/seaice pickups
1636    o change MNC call locations and add coordinate attributes
1637    o mask vorticity at the corner ; affects global_ocean.cs output
1638    o fix ini_curvilinear_grid ; test CS experiments with mpi
1639    o aim.5l_cs: modify sea-ice fraction input file ; update output
1640    o exf: Adding simple range check routine for exf fields after read
1641    
1642    checkpoint52k_post
1643    o removed top-level directory "diags"
1644      - we migrated these functions to pkg/timeave a long time ago
1645    o fixed bug introduced in pkg/monitor
1646    o accuracy ctrlprec = 32 insuffient for gradient checks using
1647      averaged fields (I/O via cost_averages)
1648      -> use ctrl.h in active_file*.F to control I/O precision.
1649    o paramter list of CALL ADTHE_MAIN_LOOP
1650    o added initial do_the_model_io to ecco
1651    o set all ...Freq to zero after cost_final
1652      taveFreq, dumpFreq, pChkptFreq
1653    o MAIN and ECCO differentiability restored
1654    
1655    checkpoint52j_post
1656    o fix nchklev in tamc.h for global_ocean...
1657    o Bringing flow and store directives up-to-date
1658    o Really weird thing!
1659      call do_the_model_io from the_main_loop with parameters
1660      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1661      TAF places a faulty re-call of initialise_varia
1662      after cost_final call which should not be there!
1663    checkpoint52j_pre
1664    
1665    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1666      error messages
1667    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1668    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1669      debug output
1670    o modfied mdsio_writefield.F to handle non-global files under exch2
1671    o update AIM Cubed-Sphere exp (aim.5l_cs):
1672      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1673    o update AIM Equatorial Channel exp:
1674      use standard aim_v23 pkg and change the SST fields to be more realistic.
1675    o globalFile now works with exch2
1676    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1677      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1678    o limit timeave output for hi-res integrations
1679    
1680    checkpoint52i_post
1681    o removed CPP_EEOPTIONS.h from verification/*/code
1682    o updated the tiling for global_ocean_pressure
1683    checkpoint52i_pre
1684    
1685    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1686      the old pkg/aim).
1687    
1688    checkpoint52h_pre
1689    o shortened offending lines in exch2_send_rx?.template
1690    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1691    o genmake2: add build & execute test for NetCDF code
1692    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1693      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1694    o added useSingleCPUIO flag to monitor.F and mon_out.F
1695    o added temporary hack for sea-ice dynamics on the cube:
1696      metric terms are ignored and it is assumed that
1697      there is no sea-ice on cube faces 1, 2, 4, and 5.
1698    
1699    checkpoint52f_post
1700    o added exch2 cube routines to pkg/exch2
1701    o modified hs94.cs-32x32x5 to use it
1702    o added new grid files to hs94.cs-32x32x5
1703    checkpoint52f_pre
1704    
1705    checkpoint52e_post
1706    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1707      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1708    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1709      to work with implicit vertical advection and AB ;
1710    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1711    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1712     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1713    checkpoint52e_pre
1714    
1715    o fix bug in impldiff when Nr=1 or Nr=2.
1716    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1717    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1718    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1719      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1720    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1721    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1722    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1723    
1724    checkpoint52d_post
1725    o re-tiled many expts to allow comparison in multi-processor mode
1726      - updated output accordingly
1727      - changed hs94.128x64x5 to use intial T from file rather than use the
1728        random number generator
1729    o add infrastructure in model routines for fizhi and gridalt packages
1730    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1731    o changes to permit hi-res, cubed-sphere, configuration
1732      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1733      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1734      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1735        of surface winds for the cube
1736      (A verification experiment, based on global_ocean.cs32x15, but with
1737       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1738       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1739       complete with example surface forcing files and matlab scripts to look
1740       at the output and compare it with that of global_ocean.cs32x15.)
1741    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1742       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1743       to conform to the common rule.
1744    o check-in the first version of the coupler + interfaces for multi-components
1745       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1746       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1747       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1748       - ocean and atmos. share the same horizontal grid (no interpolation).
1749       - exchanges between component and coupler is done in forward_step
1750    o new verification experiment, cpl_aim+ocn:
1751       coupled ocean - AIM atmosphere on cs32 grid.
1752    
1753    checkpoint52d_pre
1754    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1755    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1756    
1757    checkpoint52c_post
1758    o Fixing OPTIONS files for use of exf:
1759      - ALLOW_ECCO not needed
1760      - ECCO_CPPOPTIONS.h should not be included from
1761        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1762        as has been the case in the past
1763      - All cal/exf related options are currently set in
1764        single header file. Should remain so until we
1765        agree on a consistent new policy.
1766    o Removed all CPP options for cal package.
1767      cal has no more CPP options.
1768    o modified STOREs in GAD_ADVECTION
1769    o corrected key comp. for passkey
1770    
1771    checkpoint52b_post
1772    o new version: "thsice" of thermodynamic sea-ice pkg:
1773     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1774     - modify fluxes but do not change theta directly;
1775     - light cleaning of bulk_force pkg (still needed with thsice).
1776     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1777       + output_thsice.txt to test thsice & bulk_force pkgs.
1778    o put back grid & coriolis monitor output.
1779    checkpoint52b_pre
1780    
1781    o call "do_the_model_io" at the beginning (=> dump initial state)
1782    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1783    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1784      (need info on NUMBER_OF_PTRACERS)
1785    o missing PTRACERS headers in some routines
1786    o default tamc.h in pkg/autodiff supposed to crash
1787      to ensure proper customization
1788    
1789    checkpoint52a_post
1790    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1791      - moved surfaceTendencyTice from pkg/seaice to main code
1792      - subroutine FREEZE_SURFACE now limits only surface temperature
1793        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1794        => new output.txt for global_ocean.cs32x15 & global_with_exf
1795      - keep the old version of FREEZE for backward compatibility;
1796        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1797      - corresponding modifs for TAF directives
1798    o added surface flux output variables to TIMEAVE_STATVARS
1799    o time-averaged output for pkg/ptracers
1800    o fix problem with ECCO-related divided adjoint
1801      snapshot file was missing some ad-variables,
1802      but no warning issued by TAF
1803    
1804    checkpoint52a_pre
1805    o some bug fixes for #undef REAL4_IS_SLOW
1806    
1807    checkpoint52 = ecco_c52_e35
1808    o after testing adjoints of checkpoint51u_post
1809    
1810    checkpoint51u_post
1811    o this is the post-merge tag of the ecco-branch
1812      (needs another clean checkout and re-testing)
1813    o various natl_box_adjoint configs and results
1814      but no input fields
1815    o obcs adjoint not yet merged!
1816    o adding ECCO global 1x1 and 2x2 degree configs
1817    o updated/extended some store directives for seaice
1818    o pkg/ecco now containes ecco-specific part of cost function
1819    o top level routines the_main_loop, forward_step
1820      supersede those in model/src/
1821      previous input data.cost now in data.ecco
1822      (new namelist ecco_cost_nml)
1823    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1824    
1825    checkpoint51t_post
1826    o this is the pre-merge tag of the ecco-branch
1827    
1828    checkpoint51s_post
1829    o cleanup: removed various obsolete #define-s
1830    o pkg/grdchk
1831      - renamed 'ph-grd 3' to 'grad-res'
1832      - merged from ecco-branch
1833        (remaining bug fixes for obcs gradient checks)
1834      - additional high-precision output for testreport
1835        (grep for 'precision_grdchk_result')
1836    
1837    checkpoint51r_post
1838    o cleaned up or removed CPP_OPTIONS.h files
1839    o updated results for some of the tests to reflect the new
1840      optfiles (-ieee: -O0 instead of -O3)
1841    
1842    checkpoint51q_post
1843    o cd_code:
1844      - moved cd_scheme.F -> cd_code_scheme.F
1845      - separate read_checkpoint from cd_code_ini_vars.F
1846      - separated cd_code part from write_checkpoint
1847      - updated AD_SOURCE, generated .flow
1848      - added CD_CODE_VARS.h to the_main_loop
1849      - Moving cd_code specific store dir.s to pkg/cd_code
1850    o ctrl package totally restructured
1851      - pack/unpack now optional and decoupled from
1852        xx_/adxx_ I/O
1853      - ctrl_pack/unpack cleaned
1854        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1855      - confined inclusion of AD_CONFIG.h to where necessary.
1856    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1857    
1858    checkpoint51p_post
1859    o create initial cd_code package
1860      - WARNING: the initialization of fields within packages
1861        is broken because INI_FIELDS (where READ_CHECKPOINT is
1862        called) is called *before* PACKAGES_INIT_VARIABLES.
1863        This seems to be backwards since
1864        1) its important to initially zero the entire field including
1865           the "halo" region
1866        2) zeroing needs to be done *before* reading pickup info
1867           and the pickup call might or might not happen in any
1868           particular run
1869      - this needs an overhaul for R2
1870    o cleanup verification/*/code/GMREDI_OPTIONS.h
1871    o cleanup testreport
1872    
1873    checkpoint51o_post
1874    o bringing AD-related verif's up to date with genmake2
1875      - carbon/
1876      - global_ocean.90x40x15/
1877      - hs.94.1x64x5/
1878      - (front_relax/ )
1879    o (more) consistent directory structure for AD-related verif.'s
1880    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1881    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1882    o bug fix in find_alpha.F for MDJWF:
1883      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1884        change rho -> rho-rhoConst
1885      - replace call find_rho to find_rhonum
1886    o initialisation of rFlx extended to full array (required by TAF)
1887      and shifted to thermodynamics
1888    o removed PTRACERS.h in ptracers routine
1889    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1890    o Correcting initialisations for fVerU, fVerV.
1891    o helping TAF to recognize dependency on kUp for
1892      fVerU, fVerV
1893    o Replacing delZ by delR in pkg/ctrl/
1894    checkpoint51o_pre
1895    
1896    o undid all of cp51 pending some cleanups and discussion
1897    o added the [#include "AD_CONFIG.h"] statement to all files that need
1898       it for adjoint/tl #defines
1899     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1900     o removed tools/genmake since it no longer works
1901    
1902    checkpoint51n_post
1903    o modifications to make FREEZE flux visible to pkg/kpp
1904      - moved surfaceTendencyTice from pkg/seaice to main code
1905      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1906      - subroutine FREEZE now limits only surface temperature
1907        (this means new output.txt for global_ocean.90x40x15,
1908         global_ocean.cs32x15, and global_with_exf)
1909    o added surface flux output variables to TIMEAVE_STATVARS
1910    
1911    checkpoint51n_pre
1912    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1913    o added [#include "AD_CONFIG.h"] to all files that use the following
1914      defines:
1915      - ALLOW_ADJOINT_RUN
1916      - ALLOW_TANGENTLINEAR_RUN
1917      - ALLOW_ECCO_OPTIMIZATION
1918    
1919    checkpoint51m_post
1920    o incorporating changes to get TAMC/TAF working in genmake2
1921      - added new TAMC/TAF targets to the Makefile
1922      - various cleanups related to package handling
1923      - these changes should have no impact on the forward model
1924    
1925    checkpoint51l_post
1926    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1927     - faster algorithm for cal_addtime.F
1928     - higher precision arithmetic, where needed
1929     - pkg/exf *startdate variables changed from calendar date to
1930       model integration time
1931    
1932    checkpoint51l_pre
1933    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1934    o enable to apply restoring on S & T only in a latitude band.
1935    o update output (external_forcing_surf modif. change truncation errors)
1936       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1937    
1938    checkpoint51k_post
1939    o change default to: useNHMTerms=.FALSE.
1940     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1941       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1942     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1943        exp1, ideal_2D_oce
1944     - change data file of oceanic exp (leave the results unchanged for now)
1945       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1946    o set gravitySign automatically according to the vertical coordinate used
1947      (and change sign: back to "logical" value: +1 when R increases downward)
1948    o added an include barrier to the default CPP_OPTIONS.h and
1949      removed the #include "PACKAGES_CONFIG.h" from it
1950    o fix a bug in mom_fluxform (from chk51j_post)
1951    
1952    checkpoint51j_post
1953    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1954    o adjusted some flow directives (dynamics, thermodynamics)
1955    o added cubed-sphere case to test cost function
1956    o heckpoint_lev?_directives.h now include
1957      pkg-specific directives, whenever those are enabled.
1958    o Moving pkg-specific flow directives to corresponding pkg
1959      Moving pkg-specific differentiation list to corresponding pkg
1960      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1961      ---> conventions are
1962           - pkg_ad.flow
1963           - pkg_ad_diff.list
1964           - pkg_ad_check_lev?_dir.h
1965    
1966    checkpoint51i_post
1967    o merge of the branch-genmake2
1968      - knowingly breaks the older genmake
1969      - automatic generation of all ALLOW_${PKG_NAME} defines
1970      - new testreport supersedes older testscript
1971    o large number of package inclusion and header cleanups
1972    checkpoint51i_pre
1973    
1974    o new output for adjoin of global ocean vector invariant
1975    o fix for checkpoint of thermodynamic seaice and bulk_force
1976    o Steph gchem various cleanups
1977    
1978    checkpoint 51h_pre
1979    o fixed some single quotes
1980    o modify gchem pkg to be more versatile
1981    o modifications to clean up dic pkg
1982    o add pkg/cfc
1983    
1984    checkpoint51g_post
1985    o provide links for ARPACK and ADM*TLM
1986    o start removing verification/vero/
1987    o update AD-related stuff
1988      (in particular some IF-statements in model/src/ routines)
1989    o adding to verification/global_ocean.90x40x15/ adjoint of
1990      vector invariant setup
1991    
1992    checkpoint51f_post
1993    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1994    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1995      of tracer Green's fucntions for ocean inversion project.
1996    
1997    checkpoint51f_pre
1998    o Added on-the-fly spatial interpolation capability
1999        "USE_EXF_INTERPOLATION" to pkg/exf.
2000      - This is a temporary Cartesian-grid hack until
2001        the super-duper ESMF coupler becomes available.
2002      - See verification/global_with_exf/README for usage example.
2003      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2004        flags and modified pkg/seaice accordingly.
2005    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2006        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2007        non-local transport term.
2008    
2009    checkpoint51e_post
2010    o pkg/mom_vecinv:
2011      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2012      - add time-ave diagnostic of vorticity advection.
2013    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2014    o atmospheric geopotential: - include water vapor effect;
2015                                - use p^kappa in p* scaling.
2016    o land pkg: read initial state from files.
2017    o AIM : add stratospheric drag in the upper level
2018    
2019    checkpoint51d_post
2020    o change function ILNBLNK (=> last non-blank char.) to return zero
2021      (instead of the string length) when the string. char is empty
2022    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2023    o modif's to restore TAMC compatibility
2024      - avoid "_d" constructs in PARAMETER declarations
2025      - avoid interrupting lines by comment lines
2026    o Use cluster local disks for purely local I/O
2027      vs. globally visible disks needed for ctrl stuff
2028      (merged from ecco-branch)
2029      - new active_file_loc... and mdsio_..._loc routines
2030      - affected packages: autodiff, ctrl, grdchk, mdsio
2031    
2032    checkpoint51c_post
2033    o introducing integer flag debugLevel
2034      - debLevZero: suppress all output
2035      - debLevA: standard
2036      - debLevB: equivalent to current debugMode=.TRUE.
2037    o introducing pathname variable mdsioLocalDir for mdsio
2038      that can be specified at runtime
2039      (relevant for cluster I/O to local disk)
2040    `
2041    >>>checkpoint51b_post
2042    adjoint of ptracers
2043    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2044    o extended state in checkpoint_lev?, etc.
2045    o alternative ctrl/cost with tr1 or ptracer
2046    o new comlev1_bibj_ptracers
2047    o new ptracers.flow
2048    o made ptracers_forcing same as external_forcing_s
2049    o added verification for adjoint with ptracers
2050      - adm. grdchk fail so far
2051      - tlm. grdchk OK
2052      - checked tapelev/comlev recomputations: OK
2053    <<<checkpoint51b_pre
2054    
2055    checkpoint51a_post
2056    o added code for biogeochemistry package
2057      - new pkgs: dic, gchem
2058      - new subroutine in ptracers
2059    o modify code for biogeo packages
2060      - in model/src and pkg/ptracers
2061    
2062    checkpoint51
2063    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2064      - autodiff, ctrl, exf, grdchk, seaice
2065      kept separate packages
2066      - cost, ecco, obcs
2067    o updating verification/internal_wave, verification/lab_sea
2068      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2069    
2070    checkpoint50i_post
2071    o Preparing next differentiable checkpoint and sync
2072      of MAIN vs. ecco-branch
2073      - 1st step: this one is differentiable
2074      - 2nd step: next(! not this) checkpoint will have updated packages
2075                  from ecco-branch)
2076    
2077    checkpoint50h_post
2078    o new package "land": provide surface BC for AIM.
2079    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2080    o AIM: use true log-P extrapolation for near surface temp (= as in
2081        F.Molteni paper) ; update aim.5l_cs output.
2082    o New variable in PARM03 for more flexible pickups
2083    o somewhat cleaned package initialisation sequence for
2084      ctrl/ cost/ ecco/ in packages_... routines
2085    
2086    checkpoint50g_post
2087    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2088      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2089      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2090        made the default because of faster convergence than ADI
2091    
2092    checkpoint50f_post
2093    o exf totally restructured
2094      - replaced all exf_set_ routines by one generic exf_set_gen.F
2095        and made sure it's still differentiable
2096      - split exf_getffields.F into new exf_bulkformulae.F
2097      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2098      - updated adjoint/makefile and relevant verif. accordingly
2099    
2100    checkpoint50f_pre
2101     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2102          + change Evap over land. (update aim.5l_cs output)
2103     o added missing .cvsignores and made uniform across expts
2104     o changed configuration of tidal_basin_2d expt
2105     o added pkg/debug functions for tracing code in fatal crashes
2106     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2107     o new fn in pkg/monitor to stop model if solution grows too big
2108     o removed lots of single quotes from comments
2109    
2110    checkpoint50e_post
2111    o make KPP work with PTRACERS
2112     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2113       nearly a copy of kpp_transport_s
2114     - there is no analogue to SurfaceTendencyS, so I have to use
2115       gPtr(of the surface layer) instead
2116    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2117    checkpoint50e_pre
2118    
2119    checkpoint50d_post
2120    o change kpp output from multiple-record state files to single-record state
2121      files analogous to write_state.F
2122    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2123      analogous to the cg2d-related output.
2124    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2125      so that writing to internal file fn (with length 512) fails.
2126    checkpoint50d_pre
2127    
2128    checkpoint50c_post
2129    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2130    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2131    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2132    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2133    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2134    
2135    checkpoint50c_pre
2136    Merging from release1_p13:
2137    o bug fix for pkg/seaice dynamic solver
2138    o Added SEAICE_initialHEFF to pkg/seaice
2139    
2140    checkpoint50b_post
2141    o store u*,v* in gU,V instead of in guNm1,gvNm1
2142    o in order to put the momForcing out of the Adams-Bashforth:
2143      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2144      to timestep.F
2145    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2146    o re-generate output for highly sensitive test-exp:
2147       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2148    
2149    checkpoint50b_pre
2150    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2151    o corrected CPP option mismatch in exf_Bulk... functions for case
2152      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2153    
2154    checkpoint50a_post
2155    o Bug fix for merging between c50 and KPP.
2156      ikey was passed from thermodynamics to kpp_calc via
2157      common block rather than being recomputed in kpp_calc,
2158      in contradiction with new key itdkey.
2159      New key ikppkey created, and tamc.h headers updated.
2160    
2161    checkpoint50
2162    - 2nd step of merge with ecco-branch:
2163      merge changes in ecco-branch back into main trunk
2164    - bug fix in find_alpha
2165    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2166    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2167    - merged some sliced AD support routines
2168    
2169    checkpoint49
2170    merged from ecco-branch:
2171    o exf:
2172      - Enable initialisation of forcing fields to constant
2173        (runtime) values.
2174      - in exf_getffields.F
2175        Reduce i-/j-loop to interior domain, discarding overlaps.
2176        That also fixes wrong TAF-key computations for key_1, key_2
2177        with bulf formulae.
2178      - exf_init.F modify #ifdef for exf_init_evap
2179      - exf_getffieldrec.F, ctrl_getrec.F
2180        The following INT-usages are not safe:
2181          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2182          fldcount = int(fldsecs/fldperiod) + 1
2183        and were modified.
2184    o autodiff: checkpoint_lev...
2185      - updated storing for bulk formulae (some arrays were missing)
2186      - added state for seaice package
2187      - synchronized with main branch
2188    o DIVA:
2189      Modif.s in
2190      - the_main_loop.F
2191      - the_model_main.F
2192      and added cost_final_restore.F cost_final_store.F
2193      o With these changes, it is possible to fully separate
2194        the first forward run to compute the cost function (mdthe_main_loop)
2195        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2196        into separate model executions.
2197        This enables better tuning of DIVA to given queue sizes.
2198      o Loss of cost function value in consecutive DIVA runs is
2199        fixed by storing to 'costfinal' file.
2200      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2201        beginning/end of adjoint integration is accounted for.
2202      The current changes apply to TAF-1.4.26.
2203      TAF has one remaining bug, requiring one manual change
2204      (see MITgcm manual).
2205    o cal: synchronized between MAIN and ecco-branch
2206    
2207    checkpoint48i_post
2208    o Changes to restore differentiability of code w.r.t. previous tag
2209      (mostly adding new routines to make list and replacing
2210      pressure by totPhiHyd).
2211    o Updated and merged grdchk package
2212      - has both ADM and TLM checks
2213      - works for single- and multi-proc.
2214      - output cleaned
2215      - worked successfully for parallel DIVA
2216    o genmake:
2217      - Adding -platform=SP4
2218      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2219    o Modif. for DIVA:
2220      ctrl_unpack should not be called in intermediate DIVA interval.
2221      (similar thing would apply for active files such as
2222      tbar, sbar, psbar, which should not be reinitialised;
2223      only relevant for ecco-branch)
2224    
2225    checkpoint48h_post
2226    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2227    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2228    o Added SEAICE_initialHEFF to pkg/seaice
2229    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2230    
2231    checkpoint48g_post
2232    --- EOS:
2233    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2234      store total Potential in totPhyHyd for diagnostics & EOS.
2235    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2236    --- Pressure/geopotential gradient:
2237    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2238    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2239      ( changes results of global_ocean_pressure )
2240    o NLFS + z-coord.: add eta*Rho' contribution.
2241    o accurate phiHyd when using interface-W at the middle between 2 centers
2242     ( changes results of ideal_2D_oce )
2243    o includes r* 2nd term in potential gradient.
2244    
2245    checkpoint48f_post
2246    Merging from release1_p12:
2247    o Modifications for using pkg/exf with pkg/seaice
2248      - improved description of the various forcing configurations
2249      - added basic radiation bulk formulae to pkg/exf
2250      - units/sign fix for evap computation in exf_getffields.F
2251      - updated verification/global_with_exf/results/output.txt
2252    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2253      (SBO) core products, including oceanic mass, center-of-mass,
2254      angular, and bottom pressure (see pkg/sbo/README.sbo).
2255    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2256      to avoid negative values in shallow regions.
2257      - updated verification/natl_box/results/output.txt
2258      - updated verification/lab_sea/results/output.txt
2259    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2260    o Added useSingleCpuIO option (see PARAMS.h).
2261    o Updated useSingleCpuIO option in mdsio_writefield.F to
2262      work with multi-field files, e.g., for single-file pickup.
2263    o pkg/seaice:
2264      - bug fix in growth.F: QNET for no shortwave case
2265      - added HeffFile for specifying initial sea-ice thickness
2266      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2267    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2268      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2269    o pkg/seaice:
2270      - adjoint-friendly modifications
2271      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2272    
2273    checkpoint48e_post
2274    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2275    o dynamics: change definition of computational domain & adapt mom_fluxform
2276      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2277    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2278        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2279        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2280        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2281        inverted_barometer solid-body.cs-32x32x1
2282      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2283    
2284    checkpoint48d_post
2285    o in preparation for r*:
2286     a) use pre-computed gradient of hydrostatic potential:
2287        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2288     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2289        => affects results of glob_oce_pressure (different truncation error)  
2290      update output.txt of ideal_2D_oce & global_ocean_pressure
2291    
2292    checkpoint48d_pre
2293    o in preparation for r*:
2294      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2295      pass the 2 comp. of the grad. as arguments to momentum S/R.
2296      but for the moment, only used if it does not change the results.
2297    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2298    
2299    checkpoint48c_post
2300    Modifications in treatment of initial flux forcing controls
2301    to avoid extra storing of flux fields.
2302    
2303    checkpoint48c_pre
2304    o Added tidal_basin_2d experiment (currently 1D!)
2305    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2306    
2307    checkpoint48b_post
2308    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2309     (modification to pressure gradient not yet implemented)
2310    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2311      (for U & V) that are used for vertical advection of momentum.
2312    
2313    checkpoint48a_post
2314    o In preparation for r*, use temp. array to compute vertical transport
2315       in flux-form momentum pkg. => change results of few test-exp.
2316      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2317                        lab_sea, natl_box & plume_on_slope
2318    
2319    checkpoint48
2320    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2321    
2322    checkpoint47j_post
2323    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2324    o moved adexch from forward_step to addummy_in_stepping
2325    o added exch in ctrl_map_...
2326    o aveFreq.=0. at end of cost_final to avoid overwrite in
2327      reverse checkpointing loop
2328    o Yet more changes in gmredi:
2329      * adgmredi_calc_tensor
2330        avoiding all recomputation of gmredi_slope_limit
2331      * adgmredi_x/y/rtransport
2332        added flag for excessive storing to avoid recomp. of
2333        u/v/rtans, dTdx/y/z
2334        -> this is not really necessary and very memory-consuming
2335      * adgmredi_slope_psi:
2336        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2337      * gmredi_slope_limit
2338        re-activated full calculation of taperfct for case 'ac02'
2339    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2340    
2341    checkpoint47i_post
2342    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2343    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2344      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2345    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2346    o gmredi: fix few bugs.
2347    
2348    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2349    This will be a good checkpoint to plug into the ecco-branch.
2350    o few modif.'s to get latest version adjointed
2351      (mainly kick out code in ini_linear_phisurf)
2352    o modif's to run adjoint with exactConserv
2353    o case GM_BOLUS_ADVEC should be cleaned
2354      S/R gmredi_slope_psi should be cleaned
2355    o verification/carbon now has exactConserv=.TRUE.
2356    
2357    checkpoint47g_post
2358    o time-average AIM output: becomes independent from statvars time-average
2359      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2360    o After TAF bug fix:
2361      Tested adjoint of gmredi package.
2362      Tests were done with checkpoint47 rather than with latest
2363      checkpoint47f_post since the latter is broken for the adjoint
2364      verification/carbon/ contains both ADM and TLM gradient checks.
2365    Here they are, before they get changed/lost/stolen.
2366    Mostly modif.'s to fix numerical sensitivities.
2367    Gradient checks OK for
2368    - GM_taper_scheme:
2369      * clipping
2370      * ac02
2371      * linear
2372      * glw91
2373      * dm95
2374      * ldd97
2375    - GMREDI_OPTIONS:
2376      * GM_VISBECK_VARIABLE_K
2377      * GM_NON_UNITY_DIAGONAL
2378      * GM_EXTRA_DIAGONAL
2379      * GM_BOLUS_ADVEC
2380    in conjunction with data.gmredi parameters to be checked in
2381    in a few minutes under verification/carbon/code/
2382    
2383    checkpoint47f_post
2384    Merging from release1_p10:
2385    o modifications for using pkg/exf with pkg/seaice
2386      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2387        and SEAICE_EXTERNAL_FLUXES
2388      - pkg/exf CPP options EXF_READ_EVAP and
2389        EXF_NO_BULK_COMPUTATIONS
2390      - usage examples are Experiments 8 and 9 in
2391        verification/lab_sea/README
2392      - verification/lab_sea default experiment now uses
2393        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2394    
2395    checkpoint47e_post
2396    o created a tag prior to creating a branch
2397    
2398    checkpoint47d_post
2399    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2400      at the bottom boundary had an erroneous half slip boundary condition
2401    o added bottom drag and no slip boundary condition capabilities to
2402      oceanic pressure coordinates code
2403    o added new verification experiment global_ocean_pressure, this experiment is
2404      also described in the tutorial section of the manual
2405    checkpoint47d_pre
2406    
2407    checkpoint47c_post
2408    o Added a verification experiment for a global cubed-sphere ocean run
2409      -  verification/global_ocean.cubed32x32x30
2410      -  uses pkg/therm_seaice and pkg/bulk_forcing
2411    
2412    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2413    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2414      when using P-coordinate; only implemented for atmospheric config.
2415    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2416      NOTES: requires option NONLIN_FRSURF to be "#define".
2417    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2418    
2419    checkpoint47b_post
2420    Merging from release1_p9:
2421    o pkg/seaice
2422      - removed GOTO's and added taf directives
2423      - double precision constants to reduce the g77 (Linux)
2424        to F77 (SGI) differences reported in release1_p8
2425    o tools/genmake
2426      - added SGI options
2427    o verification/testscript
2428      - updated to that of checkpoint47a_post
2429    o verification/global_ocean.90x40x15/input/eedata
2430      - modified for SGI f77 compatibility
2431    o verification/lab_sea
2432      - added description of sea-ice model
2433      - added missing matlab routines
2434      - added test of thermodynamics parallelization
2435    
2436    checkpoint47a_post
2437    o new pkg: aim_v23
2438     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2439       for now, keep the same surface forcing as before.
2440     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2441     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2442     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2443    o add diagnostic of surface correction term in monitor output
2444    
2445    o bulk_force and therm_seaice
2446    - Two packages:  bulk_force (Bulk forcing)
2447      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2448    - Earlier integration from Stephaine Dutkiewicz
2449      and Patrick Heimbach.
2450    - Two ifdef statements for compile time,
2451       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2452    
2453    checkpoint47
2454    differentiable version of checkpoint46n_post
2455    o bug fix in quasihydrostaticterms
2456    o * "clean" adjoint code (in terms of extensive recomputations)
2457        can now be obtained for all GMREDI options (i.e. for
2458        - GM_VISBECK_VARIABLE_K
2459        - GM_NON_UNITY_DIAGONAL
2460        - GM_EXTRA_DIAGONAL
2461        - GM_BOLUS_ADVEC )
2462      * However, wrong gradient check problem remains unsolved.
2463      * New CPP options have been introduced for different
2464        tapering schemes
2465    o external_fields_load now part of differentiation list
2466    o pressure needs multiple storing;
2467      would be nice to have store_pressure at beginning or
2468      end of forward_step, e.g. by having phiHyd global (5-dim.)
2469      (NB: pressure is needed for certain cases in find_rho,
2470      which is also invoked through convective_adjustment).
2471    o recomputations in find_rho for cases
2472     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2473    o #define ATMOSPHERIC_LOADING should be differentiable
2474    o ini_forcing shifted to begining of initialise_varia
2475    o Incorporating QNVS line search routines into MITgcm
2476      (this is separate code, and therefore not under pkg)
2477      lsopt/, optim/
2478    o Updated verification/carbon/
2479      - #define GM_VISBECK_VARIABLE_K
2480      - GM_taper_scheme    = 'ldd97'    
2481    
2482    checkpoint46n_post
2483    Merging from release1_p8:
2484    o verification/natl_box:
2485      updating new external_fields_load routine
2486    o New package: pkg/seaice
2487      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2488      The sea-ice code is based on Hibler (1979-1980).
2489      Two sea-ice dynamic solvers, ADI and LSR, are included.
2490      In addition to computing prognostic sea-ice variables and diagnosing
2491      the forcing/external data fields that drive the ocean model,
2492      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2493      The implied surface heat flux is then stored in variable
2494      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2495      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2496      non-local transport term.  Because this call precedes model
2497      thermodynamics, temperature under sea-ice may not be "exactly" at
2498      the freezing point by the time theta is dumped or time-averaged.
2499      N.B.: fairly large differences in accuracy occur across
2500            different platforms/compilers; comparison between
2501            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2502            generated output gives:
2503       T           S           U           V
2504      C D M    c        m  s        m  s        m  s        m  s
2505      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2506      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2507      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2508    
2509      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2510    o GAD:
2511      - generated new common blocks to account for call of
2512        same gad routines with differing traceridentities
2513        (needed to modify tracerIdentity indices in GAD.h)
2514      - generated separate common blocks for case useCubedSphereExchange
2515        (Department of Futurology)
2516      - parameter lists to gmredi_?transport: added tracerIdentity
2517      - added new key indices to tamc.h
2518    o external_fields_load:
2519      - added this routine to TAF list
2520      - needed to make some common blocks global and additional storing
2521        along the same lines as exf package (checkpoint_lev?_directives.h)
2522    o exf:
2523      updated external forcing package
2524      - bug fixes carried over from ecco-branch
2525        (missing OBCS_OPTIONS.h in two routines)
2526      - enable easy to use "no forcing".
2527      - added exf I/O for atmospheric loading
2528      - added exf I/O for runoff data
2529      - transfered scaling between exf <-> MITgcm to exf namelist
2530    o Adding new verification experiment global_with_exf.
2531      This verification experiment is almost identical to the
2532      global_ocean.90x40x15 experiment, except that it uses
2533      the exf (and cal) package instead of the
2534      external_fields_load routine (cf README file).
2535    
2536    checkpoint46m_post
2537    o modified testscript to return -- when there are no lines of "%MON" output
2538    o added new flag "quasiHydrostatic" for QH mode
2539      and new routine quasihydrostaticterms()
2540    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2541      New routine: mom_u_coriolis_nh()
2542    o fixed sign of non-hydrostatic metric terms in u and v equations.
2543      Depend on correct sign of gravitySign.
2544    o added work.pc* to .cvsignore in aim directories using ifc
2545    o introduced flag for controllin non-hydrostatic metric terms
2546    o removed gravitySign from PARM04
2547    o switched to g77/ifc from pgf77 in aim experiments
2548    
2549    checkpoint46l_post
2550    o made convective adjustment work with pressure coordinates:
2551     - changed the direction of k-loop in convective_adjustment.F for the
2552       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
2553     - adjusted the reference pressure k-index in convective_adjustment.F
2554     - adjusted the convection condition in convect.F (in analogy to
2555       calc_ivdc.F)
2556     - convective_adjustment no longer computes anything on the halos
2557     - removed the warnings about negative salinity from find_rho.F and
2558       find_alpha.F; instead the new routine look_for_neg_salinity, called
2559       at the beginning of find_rho, find_alpha, and find_beta, does a
2560       check of the entire slice, if CPP-option
2561       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
2562    checkpoint46l_pre
2563    
2564    checkpoint46k_post
2565    o fixed the verification/global_ocean.90x40x15 experiment:
2566     - new bathymetry (the world according to A., JMC, and M.)
2567     - new initial fields and forcing fields (*.bin files)
2568     - new POLY3.COEFFS (for the next release one should switch to a full
2569       equation of state: JMD95P or MDJWF)
2570     - fixed several errors and redundancies in the data file
2571     - experiment uses looped cells
2572     - added matlab directory with diagnostic scripts for plotting of output
2573    
2574    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
2575     - read AIM physics parameters from a file (data.aimphys)
2576     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
2577    
2578    checkpoint46j_post
2579    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
2580    o move wVel computation at the end of the time step, in S/R integr_continuity
2581    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
2582    o update timeave pkg for wVel diagnostic.
2583    checkpoint46j_pre
2584    
2585    checkpoint46i_post
2586    o Clean up AIM package (and keep the results unchanged):
2587      include CPP_OPTION and use IMPLICT NONE in all routines ;
2588      declare all the variables _RL ; use _d 0 for all numerical constants.
2589      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
2590    
2591    checkpoint46h_post
2592    o cleaned up the use of rhoNil and rhoConst.
2593      - rhoNil should only appear in the LINEAR equation of state, everywhere
2594        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
2595        and the dynamical equations are all divided by rhoConst
2596    o introduced new parameter rhoConstFresh, a reference density of fresh
2597      water, to remove the fresh water flux's dependence on rhoNil. The default
2598      value is 999.8 kg/m^3
2599    o cleanup up external_forcing.F and external_forcing_surf.F
2600      - can now be used by both OCEANIC and OCEANICP
2601    checkpoint46h_pre
2602    
2603     Added code to convert surface volume flux (fresh water) into
2604     a mass flux when using P coordinates in the ocean (OCEANICP).
2605     Note: It assumes you have set rho0=rhoConst=density of fresh water.
2606    
2607    checkpoint46g_post
2608    o Include a new diagnostic variable phiHydLow for the ocean model
2609      - in z-coordinates, it is the bottom pressure anomaly
2610      - in p-coordinates, it is the sea surface elevation
2611      - in both cases, these variable have global drift, reflecting the mass
2612        drift in z-coordinates and the volume drift in p-coordinates
2613      - included time averaging for phiHydLow, be aware of the drift!
2614    o depth-dependent computation of Bo_surf for pressure coordinates
2615      in the ocean (buoyancyRelation='OCEANICP')
2616      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
2617        Theta, Salinity, and Pressure in the parameter list. This routine is
2618        presently contained in find_rho.F. This routine does not give the
2619        correct density for 'POLY3', which would be a z-dependent reference
2620        density.
2621    o cleaned up find_rho
2622      - removed obsolete 'eqn' from the parameter list.
2623    o added two new verification experiments: gop and goz
2624      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
2625    checkpoint46g_pre
2626    
2627    checkpoint46f_post
2628    o Enable tangent linear (forward mode) gradient checks:
2629      - extended active file handling to g_... files
2630      - added TANGENT_SIMULATION to theSimulationMode
2631      - extended grdchk package accordingly
2632    o added tangent linear setup in verification/carbon/code_ftl
2633    o added adjoint setup in verification/front_relax/code_ad
2634    
2635    checkpoint46e_post
2636    o Added new equation of state -> MDJWF
2637      - EOS of McDougall et al., 2002, JAOT, submitted
2638      - caveat: the equation of state is only valid for a smaller (more
2639        realistic?) range of values than JMD95P/Z and UNESCO
2640      - added masks to the calculation of pressure in store_pressure
2641      - added more check values for density in check_eos (ini_eos.F), some of
2642        the old check values are out of the range of the MDJWF-eos, so don't
2643        expect perfect matches for those
2644    checkpoint46e_pre
2645    
2646    checkpoint46d_post
2647    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
2648      'OCEANICP', also initialised field pressure correctly in ini_eos in the
2649      case of pressure coordinates. eosType='JMD95Z' in
2650      combination with buoyancyRelation='OCEANICP' now causes an error.
2651    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2652      in find_alpha/beta.
2653    checkpoint46d_pre
2654    
2655    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2656      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
2657    
2658    checkpoint46c_post
2659    o Changes necessary for ocean in p-coordinates
2660     -  Added new buoyancy relation = 'OCEANICP'
2661     -  Added new parameters = gravitySign (this used to be contained inside
2662        the factor dRdZ which I added when we first switched to R coordinates).
2663     X GM/Redi is not compatible (yet)
2664     X bottom drag and no-slip need to be debugged.
2665    checkpoint46c_pre
2666    
2667    checkpoint46b_post
2668    o Added new equation of state -> JMD95Z and JMD95P
2669      - EOS of Jackett and McDougall, 1995, JAOT
2670      - moved all EOS parameters into EOS.h
2671      - new routines ini_eos.F, store_pressure.F
2672    o Added UNESCO EOS, but not recommended because it requires
2673      in-situ temperature (see JMD95)
2674    o Modified formatting for knudsen2.f in utils/knudsen2 and added
2675      unesco.f to be used with POLY3
2676    checkpoint46b_pre
2677    
2678    checkpoint46a_post
2679    o Added (atmospheric) pressure loading
2680      - new field in FFIELDS.h, etc...
2681      - new cpp flag ATMOSPHERIC_LOADING
2682    o Changed hFacC to _hFacC in calc_phi_hyd.F
2683    o Added SHORTWAVE_HEATING to some files for consistency
2684    checkpoint46a_pre
2685    
2686    checkpoint46
2687    further merges from release1_p5
2688    o new ctrl package
2689      - adopted from ECCO environment to enable optimization
2690      - added Eliassen Palm fluxes to controls
2691    o added Eliassen Palm flux controls to gradient check package
2692    o cost package
2693      - Compatible with new ctrl package
2694      - added Eliassen Palm cost hooks
2695      - modif's of existing cost functions
2696    o Adjoint-related bug fixes in kpp:
2697      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
2698      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
2699    o autodiff package
2700      - flow directives:
2701        + new for S/R do_the_model_io
2702        + enhanced for S/R checkpoint
2703        + new gmredi.flow
2704      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
2705        disable adcommon.h/g_common.h by default.
2706      - fixed problem for adjoint of global_max
2707    o modified verification/carbon/
2708    o New setup for adjoint of global_ocean
2709    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
2710    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
2711    o incorporated hooks for sponge layer code (external_forcing.F)
2712    
2713    checkpoint45d_post
2714    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
2715    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
2716      (affects plume_on_slope "cg2d" output)
2717    o add new parameter deltaTfreesurf for free-surface time stepping
2718    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
2719    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
2720    o change phiMin in exp1 (to agree with documentation)
2721    o add new flags:
2722     - T,S forcing inside/outside Adams-Bashforth
2723     - turn off temp,salt advection and/or forcing
2724     - for each tracer, define internal flag for multiDimAdvection & A-B
2725    o monitor: change definition of KE to check conservation of Energy
2726    
2727    checkpoint45c_post
2728    o Removed f90 comments ("!")
2729    o Modified initialisations to enable exf package for MITgcm
2730      (without invoking ECCO_PACKAGE).
2731    o modifications to gradient check package (Martin Losch)
2732      - enable centered differences
2733      - modified format of standard output
2734    
2735    checkpoint45b_post
2736    o cleaned exchange calls in cg2d
2737    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
2738    o included CPP option SINGLE_LAYER_MODE in thermodynamics
2739      to configure barotropic setup (Martin Losch)
2740    o moved some initialisations within bi,bj loop in dynamics
2741      (TAF flow dependency)
2742    o in initialise_varia, moved call packages_init_variables
2743      before convective_adjustment_init
2744      (corresponding adjustment of TAF tape initialisation).
2745    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
2746    
2747    checkpoint45a_post
2748    o compute Rho over the whole domain (extend iMin,jMin indices)
2749    o specific exchange for X-slice domain (case Ny=1)
2750    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
2751    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
2752    
2753    checkpoint44h_post = checkpoint45
2754    o Fix to restore differentiability:
2755      place at which packages_init_variables is called in
2756      initialise_varia is crucial for reverse control flow.
2757    o modifications in GMRedi to enable stable adjoint
2758      (corresponding modif's in thermodynamics, dynamics)
2759    o added missing hook for sponge layer code in external_forcing
2760    o modified test cost functions
2761    o storing in gad_advection (plus removal of write(0,*)!
2762    o missing headers TR1.h added in convective_adjustment routines
2763    o errorMessageUnit set non-equal zero in eeboot
2764      (conflict on some platforms, e.g. IBM SP3)
2765    o modified carbon verif.
2766    
2767    checkpoint44h_pre
2768    o vertical grid option: allow to put the Interface at the middle between
2769      2 cell-centers ; replace delZ in pkg/kpp by drF.
2770    o GM Advective form: Tracers are advected using the residual transport (=
2771      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
2772    
2773    checkpoint44g_post
2774    o fix surface correction term in multiDimAdvection (affects plume_on_slope
2775      results) ; ifdef missing in thermodynamics.F
2776    
2777    checkpoint44f_pre,checkpoint44f_post
2778    o added PTRACERS package
2779      This allows an arbitrary number of passive tracers to be integrated
2780      forward simultaneously with the dynamicaly model.
2781      + Implemented so far:
2782        - basic forward algorithm (time-stepping, advection, diffusion, convection)
2783        - I/O and checkpointing
2784        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
2785      + Not implemented so far:
2786        - KPP
2787        - OBCS
2788      + No specific example supplied (yet) but global_ocean.90x40x15 has the
2789        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
2790        line in data.pkg.
2791      + This package is disabled by default since it increases storage.
2792    
2793    
2794    o testscript: added -cleanup option
2795    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
2796                 b) enable to filter 2D fields.
2797    
2798    checkpoint44e_pre,post
2799    o re-wrote convective adjustment to use pre-calculated weights
2800      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
2801      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
2802      Original calls to convect() still in place.
2803    
2804    chkpt44d_pre,post
2805    o added missing EXCLUDE_MONITOR flags
2806    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
2807      (incompatible typ in MIN/MAX expressions caused problems
2808      on IBM SP3)
2809    o in genmake added variable MAKEDEPEND
2810      plus resetting for case SunOS
2811    o added timer_stats.c routine for IBM SP3
2812    o removed variables in dynamics
2813    !!! I forgot to create tag chkpt44d_pre !!!
2814    !!! But chkpt44d_pre = chkpt44c_post    !!!
2815    
2816    o real fresh water flux implemented with non-linear free-surface.
2817    
2818    chkpt44c_pre,post
2819    o few fix (mask in shap_s2, EmPmR in external_field_load,
2820      USE_NATURAL_BCS in solve_for_P);
2821    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
2822    
2823    checkpoint44b_pre/_post
2824    o merge of relevant stuff from the ecco-branch:
2825      - genmake: removed $S64 overwrite for case SunOS
2826      - pkg/exf: update and corrections for field swapping and obcs
2827      - pkg/ecco: parameter lists for the_model_main, the_main_loop
2828                  harmonized between ECCO and MITgcm
2829      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
2830                      updated checkpointing_lev... lists for obcs
2831      - model/src: minor changes in forward_step, plot_field
2832                   added directive for divided adjoint in the_main_loop
2833      - pkg/mdsio: added mdsio_gl_slice
2834    
2835    o check parameters & config (chkpt44a_pre,post)
2836    o OBC and NonLin_FrSurf.
2837    
2838    checkpoint44
2839    o fix bug in mom_vi_del2uv
2840    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
2841    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
2842    o update AIM experiments (NCEP input files)
2843    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
2844    o added some stuff for AD
2845    
2846    checkpoint43
2847    o added two new advection tests
2848    o added global 4x4 degree ocean test
2849    o added test of H&S94 with free surface on cube
2850    o some final mods for gradient check, adjoint,...
2851    
2852    checkpoint42
2853      Fixed AD-related problems:
2854    o Store directives up-to-date with re-arranged Adams-Bashforth
2855      (mainly thermodynamics.F)
2856    o New store directives for multi-dim. advection schemes
2857      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
2858      * new common block and key passkey
2859      (mainly gad_advection.F)
2860    o Modified store directives for split of dynamics/thermodynamics
2861      for the case ALLOW_KPP
2862    o Cleaned argument list for timestep_tracer.F
2863    
2864    checkpoint41
2865    o re-formatted/added comments in prologues of key subroutines
2866      to work with protex
2867    
2868    checkpoint40
2869    o moved calc_gs, calc_gt and calc_tr1 back to model/src
2870    o added FLT (floats) package from Arne along with demo. experiment
2871    o re-arranged Adams-Bashforth scheme for tracers to allow easier
2872      implementation of forward-in-time forcing terms
2873    o more mods for non-linear free-surface including new variable
2874    o modified multi-dim method to work on cube
2875    o bug fix in KPP (from DM)
2876    
2877    checkpoint40pre9
2878    o added DST advection schemes
2879    o fix MPI bug on SGI's
2880    o modifications for non-linear free-surface
2881    o fixed conditionals for fixed flow/passive tracer only mode
2882    o added tension/strain form of stress tensor
2883    o changes to commenting of arguments for TAF/TAMC
2884    o added/updated many matlab scripts
2885    o added multi-dimensional advection method for tracers
2886      
2887    checkpoint40pre8
2888    o new package rw/
2889      Added method for dumping intermediate local arrays:
2890      mdsio_writetile - same as mdsio_writefield except works from inside
2891                        bi,bj loop
2892      mdsio_writelocal - same as mdsio_writetile except works for local
2893                         arrays
2894      write_local_r? - higher-level wrapper for mdsio_writelocal
2895      Controlled by diagFreq. Defaults to zero (ie. no dumps)
2896      Example given at end of mom_vecinv.F that dumps some local arrays.
2897    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
2898      control flux-form versus vector invariant code.
2899      Switch is runtime flag vectorInvariantMomentum (defaults to false)
2900      or genmake -DISABLE ...
2901    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
2902      (additional storing is now needed for case vecinv;
2903      currently nothing implemented to switch this storing off
2904      in case fluxform is used since no CPP flag available).
2905    
2906    checkpoint40pre7
2907    o bug fix in dynamics.F
2908      calc_viscosity called before k=1,Nr loop.
2909    o added some #ifdef's ALLOW_PASSIVE_TRACER
2910    o cleaned initialisations in ctrl_map_ini
2911      related to TAF
2912    
2913    checkpoint40pre6
2914    o split dynamics into thermodynamics & dynamics
2915    o corresponding split of calc_diffusivity into
2916      calc_diffusivity, calc_viscosity
2917      (kpp_calc_diff, kpp_calc_visc).
2918    o Added diffkr, kapgm to control variables
2919    o bug fix in gmredi_slope_limit for ldd97
2920    
2921    checkpoint40pre5
2922    o proper initialization of Adams-Bashforth time stepping
2923      + uses forward step for very first step of model (iter=0)
2924    o re-generated *all* output since almost all output is modified by this
2925      change (sorry but we've been putting this one off for about 2 years)
2926      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
2927        *not* regenerated since they are already out of date and I don't
2928        want to create the impression that they are suddenly working.
2929    o removed KAP stuff for DEC's
2930    o modified/added many .cvsignore files in */code and */input
2931    o added new expt "solid-body.cs-32x32x1"
2932      + this uses an alternative form of ini_curvilinear_grid.F which
2933        is not necessarily any better than the current one...
2934    
2935    checkpoint40pre4
2936    o added re-initialisations of utrans,vtrans,rtrans in
2937      calc_common_factors which are crucial for TAF.
2938    o extended iMin,jMin range for calc_common_factors,
2939      calc_diffusivity
2940    o added option ALLOW_PASSIVE_TRACER
2941    o a few minor updates and fixes
2942    
2943    checkpoint40pre3
2944    o created calc_gtr1.F for gad package
2945    o split the_main_loop and re-introduced forward_step
2946    o some recomputations of nIter0 for TAMC
2947    
2948    checkpoint40pre2
2949    o Updated to latest branch of AJA, JMC
2950    o Added gradient check package
2951    o Added routines for passive tracer handling
2952    o Added carbon sequestration sensitivity experiment
2953    
2954    checkpoint39
2955     o Modifications and fixes to support TAMC
2956       (mainly missing or wrong directives)
2957     o Corrected common blocks when fooling TAMC to produce adjoint I/O
2958       in addummy_in_stepping
2959     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
2960     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
2961     o Included following packages:
2962       cal: calendar
2963       exf: external forcing
2964       ecco: essential routines to control use of cal, exf
2965             (NB: this is not the full ECCO environment)
2966     o disabled some packages by default in genmake
2967    
2968    checkpoint38
2969     o see notes_c37_adj.txt
2970     o corrected wrong layer index in external_forcing_t
2971     o replaced the_main_loop/forward_step by the_main_loop
2972     o removed forceoutput from write_state
2973       (replaced criteria for initial/final state)
2974     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
2975    
2976    checkpoint37
2977     o mdsio.F routine split and packaged in pkg/mdsio
2978       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
2979        used unless genmake -disable=mdsio)
2980     o allow a more precise surface-geopotential gradient for the atmosphere
2981       taking into account the change in space of Alpha (=1/rho) at the surface.
2982     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
2983       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
2984     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
2985       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
2986       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
2987     o Time-Average diagnostics defined as a pseudo package "timeave".
2988     o pickup files : old pickup (before c35) did not work with new code (c35
2989       and after) unless activating 2 commented lines in initialise-varia.
2990     o Non-Hydrostatic pickup file Pb fixed.
2991     o bug with Rigid-lid version (since c35) fixed.  
2992    
2993    checkpoint36
2994     o implement Crank-Nickelson barotropic time-stepping
2995     o recover Time-Average diagnostics
2996     o fix Pb in checkpoint (PR#19)
2997     o AIM become a standard package ; clean unused CPP_kees
2998    
2999    checkpoint35
3000     o subtantial rewrite of dynamics.f
3001     o allows staggered time-stepping
3002     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
3003     o added bottom drag (linear + quadratic)
3004    
3005    checkpoint34
3006     o Modified exchange routines for correct reverse simulation.
3007     o Added verification output to comply with bug fix in impldiff.F
3008       as of c33 (exp2, natl_box).
3009     o Corrected store directives in dynamics.F
3010     o Corrected array boundaries in impldiff.F
3011     o Corrected array dimensions in gmredi.
3012       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
3013     o Added routine GLOBAL_SUM_INT to global_sum.F
3014     o Added mdsio_gl.F for ECCO purposes.
3015    
3016    checkpoint33
3017     o Fixed bug in lower BC in impldiff.F
3018     o Fixed confusion about units of forcing arrays in FFIELDS.h
3019       namely Fu,Fv,Qnet,Qsw,EmPmR:
3020       - Removed verification/natl_box/code/external_fields_scale.F
3021         (did not differ from that in model/src)
3022       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
3023         (see FFIELDS.h for description)
3024       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
3025         kpp_calc.F and kpp_transport_t.F
3026       - Removed model/src/external_fields_scale.F and calls to it
3027       - verification/natl_box uses flux data with "atmospheric" sign so
3028         a special version of external_fields_load.F is used to
3029         change the data as it's read in. This way, the arrays
3030         have the right units and signs at all times tha a user could
3031         possibly use them.
3032     o Corrected genmake to delete a temporary file during configuration
3033    
3034    checkpoint32
3035     o Scaling of forcing fields moved from external_forcing.F to
3036       external_fields_scale.F, called directly after loading fields.
3037     o Surface relaxation terms added to surface tendency fields in
3038       extra subroutine.
3039     o impldiff.F changed to avoid storing by TAMC of huge intermediate
3040       fields.
3041     o Changes in GMRedi to comply with packaging structure.
3042     o Modifications and bug fixes in KPP package.
3043     o Verification experiment for KPP added (verification/nat_box/)
3044    
3045    checkpoint31
3046     o Packages interface brought in line with defined standard
3047       -> new routines packages_...F
3048       -> changes in initialise_fixed.F, initialise_varia.F
3049       -> enables initialisation interface for ECCO package
3050     o Rescaling of external forcing fields immediately after read
3051       (removed from external_forcing.F)
3052       -> new: surface_fields_scale.F
3053       -> affects ini_foorcing.F, external_fields_load.F
3054     o Computation of surface tendencies before tendency updates.
3055       -> new: external_forcing_surf.F
3056     o Change of variable names useGMRedi, useKPP, useECCO
3057     o Further changes in dynamics.F, impldiff.F for TAMC
3058     o Tested for experiments 0, 2, 4.
3059       - not yet tested for GMRedi.
3060       - not yet tested for KPP.
3061    
3062    checkpoint30
3063     o Updates for OBCs
3064     o New experiment for test OBCs (internal_wave)
3065     o New output.txt in verification/exp4/results/
3066     o Updates for KPP: calculation of viscosity corrected, new variables
3067       kpp_dumpFreq and kpp_taveFreq
3068     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
3069       and entry for T90 in genmake
3070    
3071    checkpoint29
3072     o packaged KPP and GM/Redi
3073    
3074    checkpoint28
3075     o Corrected initialization of hFacMin for difference vertical coordinates
3076     o Modified calculation of partial cell thickness to more robust algorithm
3077     o config_summary.F: replaced write_1D_... by write_0D_...
3078       read_write.F: added subroutines write_0D_...
3079     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
3080       included some initialisations required for TAMC.
3081     o routine calc_isoslopes: modified sqrt computation to make it
3082       differentiable for zero argument.
3083     o routines dynamics, impldiff:
3084       included store directives and tape key computations required for TAMC.
3085     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
3086    
3087    checkpoint27
3088     o fixed calc_isoslopes() to so that cancellation of terms in tensor
3089       formulation works properly with variable resolution.
3090     o restructured the calling tree between the_model_main() and dynamics()
3091     o split initialise() into initialise_fixed() and initialise_varia()
3092     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
3093       in new routine ini_psurf()
3094    
3095    checkpoint26
3096     o moved some #ifdef in optional routines to encompass everything
3097       except the argument declarations. This was using up some memory.
3098     o fixed macros like _ADT to work with both versions of Linux cpp
3099     o cleaned up some unused and uninitialized variables
3100       (helps when debugging with strict compile options)
3101     o split up CPP_EEOPTIONS.h into options and macros
3102       (macros are now in eesupp/inc/CPP_EEMACROS.h)
3103     o patch for 2 processor JAM mode
3104    
3105    checkpoint25
3106     o updates for OBCs and NH
3107     o dramatically reduced memory usage
3108     o added "JAM" routines for use on Artic network
3109     o parameterization of convection by implicit vertical diffusion
3110     o added a diagnostic of convective index
3111     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
3112       (this is was partly for OBCs and NH but also in anticipation of
3113        an explicit free-surface option)
3114     o initial state input files for U and V
3115    
3116    checkpoint24
3117     o Removed some spurious "REAL"s
3118     o Updated KPP to latest version from JPL
3119     o Added a COS(latitude) in horizontal viscosity
3120    
3121    checkpoint23
3122     o Added del^4 diffusion for salt and temperature
3123     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
3124    
3125    checkpoint22
3126     o Made many small changes: implicit none, format(i5), etc...
3127     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
3128    
3129    checkpoint21
3130     o Introduced new I/O package that supports direct-access records (mdsio.F)
3131     o Split-up mid-level I/O routines
3132     o Updated input data for experiments 0,1,2,4 and 5
3133     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
3134    
3135    checkpoint20
3136     o Tidied up open-boundaries some more
3137     o Added non-hydrostatic code
3138     o Fixed some input data
3139     o Modified MPI start-up to work in "coupled" context.
3140    
3141    checkpoint19
3142     o Tidied up directory structure for verification experiments.
3143     o Added new code for open boundaries.
3144     o Corrected advective terms near boundaries.
3145     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
3146     o Implemented free-slip/no-slip BCs and del^4 dissipation.
3147     o Split default parameters out of ini_parms.F into set_defaults.F.
3148    
3149    checkpoint18
3150     o Further changes for optional code generation with
3151       CPP - ugh!
3152    
3153    checkpoint17
3154     o Beginning to incorporating modularity
3155       for supporting atmos. and ocean configs.
3156     o Small changes for TAMC complinace
3157     o New ultra simple test case. Barotropic box
3158       configuration "exp0".
3159    
3160    checkpoint16
3161     o Minor changes to exchange routines to support
3162       accumulation in reverse mode. Adjoint of an
3163       assignment is an addition.
3164     o Changes to support compilation by TAMC (LR(1)
3165       syntax) and by g77 under Linux ( 72 character
3166       limit ).
3167    
3168    checkpoint15
3169     Rewrote exchange routines to allow
3170     o General tile <-> tile connectivity.
3171     o TAMC reverse mode flag ( is this really needed? )
3172     o Variable width overlap and exchange region widths.
3173     o Hooks for sharing data via DMA, Arctic, Memory Channel,
3174       shmput/shmget, VIA, SYSV shmem and every other cool
3175       communication method.
3176    
3177    checkpoint14
3178     Consistent isomorphism chages made. These allow dynamical core
3179     to support both pressure and meters as a vertical coordinate.
3180    
3181    checkpoint13
3182     Release which corrects global_max problem and a couple
3183     of KGM time-averaging diagnostic errors. Also contains
3184     a double-gyre experiment setup as well as the baseline
3185     4 degree global template. The double gyre template is
3186     organised to allow it to be applied automatically to
3187     the baseline configuration.
3188    
3189    branch-point-rdot
3190     A few tidy-ups have been made bt the real point of this
3191     check-point (excuse the pun) is to allow a branch to be
3192     made for the purposes of adding the rDot alterations.
3193     I don't want to commit the rDot to the main-trunk until
3194     we've actually tested it...
3195    
3196    checkpoint12
3197     Tidy up and added generic genmake script (formerly
3198     configure script).
3199     Released to testers.
3200    
3201    checkpoint11
3202     Re-arranged initialise() and introduced ini_vertical_grid()
3203     and ini_masks_etc().
3204    
3205    checkpoint10
3206     Introduced the configure script.
3207     Separated out the diags package.
3208     Added template for writing time-averages of tile/intermediate quantities.
3209     Updated SIZE.h in exp2 and made the data big-endian.
3210    
3211    checkpoint9
3212     MPI fix. Filename changes (meta/data). salbin*y stuff.
3213     General tidy-up.
3214     SST.bin SSS.bin added to verification/exp2
3215    
3216    checkpoint8
3217     Inludes time-dependant forcing and time-averaging.
3218     Works at 4x4 and 2.8125x2.8125 global
3219    
3220    checkpoint7-4degree-ref
3221     Branch from checkpoint7. Released for application to
3222     global modeling and general modeling - process studies, regional
3223     model etc..
3224     Configured for verification/exp2 - 4 degree global, two process.
3225    
3226  checkpoint7  checkpoint7
3227   Created by cnh   Created by cnh
3228   Simple 4 degree global simulation   Simple 4 degree global simulation

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