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revision 1.570 by edhill, Wed Oct 12 16:08:16 2005 UTC revision 1.768 by dimitri, Tue Feb 6 22:24:51 2007 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
8      and portions thereof.  See read_cs.txt for description and examples.
9    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
10      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
11      following the great-circle arc between those 2 points.
12    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
13      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
14    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
15     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
16     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
17     - still needs work (not working with some options ; efficiency to improve)
18       and serious testing.
19     - use this scheme for temperature & salinity in 2 advection test exp.:
20       advect_xy & advect_xz, respectively.
21    
22    checkpoint58u_post
23    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
24    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
25    o testreport: add option "-skipdir" to skip some test.
26    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
27      momentum calculation.
28    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
29    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
30      remove checkpoint.F and the_correction_step.F (no longer used);
31      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
32    o add option (linFSConserveTr) to correct for tracer source/sink due to
33      Linear Free surface
34    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
35    o pkg/thsice: fix reading mnc-pickups
36    
37    checkpoint58t_post
38    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
39    o pkg/mdsio:
40     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
41       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
42       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
43     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
44     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
45       either MDS_READ_FIELD or MDS_WRITE_FIELD )
46     - new S/R (to replace MDSWRITEMETA), which allows to write more
47       informations (variable names, time ...) to meta files.
48     - modify rdmds.m to give back the meta file content.
49    o pkg/diagnostics: change vertical interpolation to be safer, and more
50       flexible (define p-levels to interpolate to in data.diagnostics);
51      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
52       diagnostic pointer.
53    o pkg/seaice: more cleaning up of seaice_growth, added many comments
54    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
55    o fix multi-category seaice:
56     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
57       SEAICE_MULTICATEGORY
58     - fix short wave heat flux
59    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
60       and allow to use EVP solver. Change forward lab_sea: test both EVP
61       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
62    o Initial check-in of lab_sea adjoint
63      (very similar to natl_box_adjoint/code_seaice)
64      * used C-grid and EVP solver
65      * used KPP, GM/Redi
66      * uses inAdExact=.TRUE.
67      * gradient checks fail for both ADM and TLM
68        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
69        f.d. gradients actually seem more problematic than ADM, TLM gradients;
70        issue is related to forward mismatch between g77 an ifort
71    o pkg/seaice: overhaul of thermodynamics
72     - growth.F and groatb.F are replaced by new routine seaice_growth.F
73     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
74     - move a few global fields out of SEAICE.h into seaice_growth.F and
75       make them 2D (FICE/QNETO/ ...)
76     - remove FO (it is the same as QNETO)
77     - introduce a few local fields to avoid modifying external fields such
78       as atemp, etc.
79    
80    checkpoint58s_post
81    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
82      changed exf_set_gen.F so that
83        genperiod=0 means input file is one time-constant field and
84        genperiod=-12 means input file contains 12 monthly means
85    o CG2D: use pre-computed solver main-diagonal (stored in common block);
86      this affects truncation error ; generate new output file for exp. which
87      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
88        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
89        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
90        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
91        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
92        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
93    o start implementation of deep-atmosphere and anelastic formulation
94    o verification: remove 2nd copy of input files and use script "prepare_run"
95      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
96    o mom_common/vecinv/fluxform: fix a few initialisation isssues
97    o profiles: fix for multithreaded case
98    
99    o diagnostics: rename few diags:
100      s/'PRESSURE'/'RCENTER '/g
101      s/'TICE    '/'oceFreez'/g
102      s/'TAUX    '/'oceTAUX '/g
103      s/'TAUY    '/'oceTAUY '/g
104      s/'SWFLUX  '/'oceQsw  '/g
105      s/DIFx/DFxE/g
106      s/DIFy/DFyE/g
107      and add few ocean-forcing diagnostics:
108      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
109    o modifications to pkg/seaice/growth.F and budget.F, which change results of
110      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
111      as actual snow thickness.  It now refers everywhere to effective snow
112      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
113    
114    checkpoint58r_post
115    o modifications to pkg/seaice/growth.F, which change results of
116      lab_sea experiment: fixes pertain to melting snow over open water, to
117      masking EVAP under sea ice, and to using the correct AREA variable for
118      computations of EVAP, PRECIP, HSNOW, and GHEFF
119    o add ability to read bathy, salt, and theta using MNC (off by def)
120    o add flooding algorithm and advection of HSNOW for pkg/seaice;
121      both are turned off by default and do no change any results
122    o seaice advection with pkg/thsice: a step toward the use of non-linear
123      advection scheme, but #ifdef or commented out for now (requires more EXCH).
124    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
125      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
126      in natl_box (affects results @ truncation level: update output.txt)
127    o multi-threading and IO:
128      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
129      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
130        (needed to work with SingleCpuIO): tested in all verif. exp.
131    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
132      affects the results (but none of the verification test uses this scheme).
133    o Adding some pkg/diagnostics capability to pkg/seaice
134      (will certainly be subject to changes)
135    o ctrl: adding new control variables:
136      lwflux, lwdown, evap, snowprecip, apressure, runoff
137    
138    checkpoint58q_post
139    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
140      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
141      high_res_cube configuration by 4% on Columbia.
142    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
143      add (in global_with_exf/code) a version of EXF_INTERP_READ without
144      dynamical allocation (seems to work in multi-threaded).
145    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
146      single CPU io) so that TAF does not have to see EESUPPORT.h
147    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
148    
149    checkpoint58p_post
150    o obcs: stop if obcs is used with useCDscheme = .true.
151    o shelfice:
152     - fix a sign error so that no slip at shelfice interface works
153     - remove stop for combination non-hydrostatic code and shelfice. That does
154       not mean, that the results are correct, but at least they are numerically
155       stable
156    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
157    o added adjoint exch routined for all exch*3d* routines
158      and updated flow directives
159    
160    checkpoint58o_post
161    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
162      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
163    o change controling S/R for writing pickup file (new S/R do_write_pickup)
164      and clean-up reading/writing of pickup files.
165    o fix local version of read/write pickup (NH part) in rotating_tank/code
166    o simplify EXCH interface:
167     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
168     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
169    o added the regrid package
170    o shelfice:
171     - add a simple boundary layer scheme to reduce noise
172     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
173    
174    checkpoint58n_post
175    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
176       local variable (not in common block).
177    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
178      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
179      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
180        to work with SingleCpuIO.
181    o add "_d 0" to real constant of pkg/cfc subroutines ;
182       update exp. cfc_exemple & tutorial_cfc_offline output files.
183    o multi-threading and IO:
184      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
185        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
186      - barrier before and after reading.
187      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
188      - avoid using MDS_WRITELOCAL for LAND pkg output.
189      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
190        common-block variables ; Allows multi-threading with master-thread IO.
191    o change default MAX_NO_THREADS from 32 to 4 ;
192      and stop cleanly when MAX_NO_THREADS is too small.
193    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
194    
195    checkpoint58m_post
196    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
197       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
198    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
199       keep global_ocean.90x40x15 (for AD testing) with former secondary test
200       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
201    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
202        add MITgcm_tutorials (= code + all the tutorials)
203    o ecco, option to compute cost for total ssh (mean+anom)
204    o consistent with addition of ptracer and ssh in pkg/profiles
205    o profiles: adding ptracer and ssh
206    o testreport: change multi-test output-file name
207      (from output.txt.{name} to output.{name}.txt)
208    o profiles: now ok for mutli-tiles case
209    o seaice: add 4 parameters for different advection schemes for area,
210      (effective) seaice thickness, enthalphy, and snow height. Their default
211      is the standard parameter SEAICEadvScheme
212    o calc_gw:
213     - add cosFacU in zonal viscous flux (harmonic.visc.).
214     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
215       of tutorial_plume_on_slope.
216    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
217    o calc_gw: true flux-form, account for horizontal grid spacing.
218      update rotating_tank results, but not plume_on_slope (affected at
219      truncation level, 11 digits).
220    
221    checkpoint58l_post
222    o calc_gw:
223     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
224     - remove side-drag for now (need to fix it); update plume_on_slope results.
225     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
226    o commit code to make SST/SSS weights spatially variable
227      (based on either variable in-situ or variable initial T/S weights)
228    o pkg/ecco:
229      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
230        now based on horizontally varying weights wthetaLev, wsaltLev
231      * cost_averagesflags now returns year indices in addition to day, month
232      * sflux balance is performed on annual basis
233        (sflxumm, sfluxmm2, bal_sfluxmm)
234      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
235        including separate counting and multipliers
236    o pkg/rbcs
237      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
238    
239    checkpoint58k_post
240    o testreport:
241     - always build in dir. "build" (if not there, mkdir build instead of building
242       & running in input)
243     - run in dir run (if it exists), in build otherwise.
244     - call prepare_run (if input/prepare_run exists)
245     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
246    o pkg/exf modifications to interpolation and rotation routines for more
247       reasonable treatment of North Pole singularity: for tracers North Pole
248       value is set to northernmost zonal-mean value, for zonal velocity it is
249       set to zero, and for meridional velocity it is set to northernmost value.
250    o pkg/exf/exf_check_range.F
251     - add tile index to diagnostics and move stop statement to the very
252       end of the routine.
253    o pkg/diagnostics: (diagnostics_main_init.F)
254      define title of isomorphic variables according to the current config.
255    o pkg/thsice with pkg/seaice dynamics:
256    - fix domain of computation (interior only, required for exf) and do exchanges
257    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
258    o towards a standard way of dealing with multi-threading in MONITOR
259      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
260    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
261       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
262    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
263    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
264    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
265       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
266    o tracer advection:
267     - clean-up and simplify calc_common_factors.F
268     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
269       advection subroutine (but still not used within DST advection S/R)
270    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
271    
272    checkpoint58j_post
273    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
274      from file (collects calls previously in FORWARD_STEP)
275    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
276    o adjoint store dir. adjusted accordingly
277    o genmake2
278      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
279    
280    checkpoint58i_post
281    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
282      on wind stress (SEAICEstressFactor defaults to 1.)
283    o Total number of Timers is finite (<=40): comment out 2 non-essential one
284      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
285    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
286      on CS-grid: no longer loosing mass.
287    o exf & curvilinear-grid: no longer modify longitude xC & xG.
288    o pkg/ggl90: fix sloppy output and fix a bug
289    o pkg/seaice: added SEAICEuseEVPpickup parameter
290      - Set to false in order to start EVP solver with
291        non-EVP pickup files when using SEAICEuseEVP
292      - fix sign error in diffusion in seaice_calc_rhs
293    
294    checkpoint58h_post
295    * Modifications for bottom topography control
296      o replace hFacC by _hFacC at various places
297      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
298      o add non-self-adjoint cg2d_nsa
299      o update autodiff support routines
300      o re-initialise hfac after ctrl_depth_ini
301      o works for 5x5 box, doesnt work for global_ocean.90x40x15
302    * Adding verification for 5x5 box (4-layer) bottom topography control
303    
304    checkpoint58g_post
305    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
306       used for mean seasonal cycle, mean diurnal cycle); add an example
307       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
308    o pkg/ggl90:
309      - add parameter (minimum surface kinetic energy)
310      - fix bug (avoiding division by zero)
311    o couple pkg/thsice to pkg/seaice:
312      - modify advection in seaice to accomodate new scalar fields to be advected
313      - only muliDimAdection scheme work with seaice/thsice
314      - mapping of thsice-variables to seaice-variables, back and forth
315      - does not break the verification experiments, but does not give the
316        desired results either
317    o pkg/seaice
318      - make (default) second order advection a bit less confusing?
319    
320    checkpoint58f_post
321    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
322      to pkg/seaice):
323      - new routines thsice_map_exf and thsice_get_exf provide the interface
324      - add an additional formal parameter to thsice_solve4temp
325    o pkg/exf:
326      - add new fields wspeed, snowprecip (to be able to couple to thsice)
327      - correct Stefan-Boltzmann constant
328      - new parameter for longwave surface emittance
329      - separate some stuff from exf_bulkformulae into new routines  
330        exf_radiation, exf_wind
331      - add new parameters and constants: longwave emissivity for ocean, ice
332        and snow, evaporation parameters over ice
333      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
334        either wind from stress or stress from wind
335    o pkg/thSIce:
336    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
337    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
338       and THSICE_CALC_THICKN
339    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
340    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
341      to make debugging easier.
342    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
343    o pkg/bulk_force:
344      - clean-up comments and parameters ;
345      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
346    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
347      generate new output for test-experiment: aim.5l_cs.thSI
348    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
349      testreport accordingly
350    
351    checkpoint58e_post
352    o SEAICE_CGRID adjoint done
353    o R_STAR adjoint implemented.
354      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
355      * need to sort out init. of h0facc, etc.
356    o Make pkg/profile fully independent of ecco,cost, etc. stuff
357      to be able to use it in pure forward.
358    
359    checkpoint58d_post
360    o upgrade simple test-experiment to tutorial example:
361     step.1: duplicate the experiment and (step.2) will remove the old copy.
362      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
363      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
364      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
365      tutorial_global_oce_biogeo    <- copy of dic_example
366      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
367      tutorial_plume_on_slope       <- copy of plume_on_slope
368      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
369      tutorial_global_oce_optim     <- empty for now (David ?)
370      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
371     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
372    o correct a sign problem in cost_scat.F
373    o obcs and ptracers: fix boundary conditions for advections schemes
374      with larger stencil
375    o thsice adjoint: start
376    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
377      completeness
378    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
379      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
380    o ptracers adjoint:
381      * avoid extensive recomputatations
382      * fix missing re-init. of gptr (missed by TAF)
383    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
384      me to turn off the excessive output to STDOUT that this package produces
385    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
386      and add those terms in Vector-Invariant formulation.
387    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
388      if the control period (xx_hfluxperiod etc) is 0
389    o in profiles pkg, clean routines and fix details
390    o in ecco pkg, reading ssh data:
391      fix problem in case the model does not start at iter0=0
392    o fix mnc-pickup/restart for ptracers
393    o new package prifiles:
394      code to compute profile-based cost by Gael Forget
395      (modifs in ecco, ctrl, autodiff)
396    o Benign bug fix in initialization (spotted by M. Mazloff) of
397      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
398    
399    checkpoint58c_post
400    o adjoint: finish NLFS adjoint and provide reference output in
401      verification/global_ocean.90x40x15/results_ad_nlfs
402    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
403      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
404      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
405      with SEAICE_CGRID defined.
406    o move calendarDumps from "data" to "data.cal" and clean-up the code
407      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
408    o add useEXF & useCAL flags (for now, set in hard-coded way)
409    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
410      (were missing in NH mode, and wrong in quasihydrostatic mode).
411      waiting for Chris updated version of calc_gw to add those CALLs.
412    o fix bug in quasihydrostatic S/R ;
413      add a test for this option: global_ocean.90x40x15.qshyd
414    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
415      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
416    o add on/off flag useOffLine for package OFFLINE
417    o seaice:
418      - modify advection so that it works also on the C-grid
419      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
420        problem in multi-tile runs with C-grid
421      - add flags for clipping ice velocities and/or masking solver forcing
422      - fix drag (ocean on ice) formulation and a bug that caused noise in the
423        C-grid solver
424      - added a few comments to seaice_diffusion.F
425      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
426        are now exclusive)
427      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
428        required re-ordering the code a little:
429       + make DAIRN global variable (defined in SEAICE)
430       + move computation of the viscosities eta and zeta into a new separate
431         routine (because I need to recompute them in seaice_ocean_stress.F)
432    
433    checkpoint58b_post
434    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
435      update output.txt of exp. aim.5l_cs.thSI
436    o various mnc cleanups and improvements:
437      + shrink lookup tables by factor of ~4
438      + better error reporting when running out of lookup space
439      + able to handle longer path/file names (up to 500 chars)
440    o adjoint:
441      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
442      - TBD: "hidden" mom_vecinv recomp. in dynamics
443    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
444     (allow to differentiate between forcing components using new integer flags:
445      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
446     and add new flag to put Dissipation tendency out of Adams-Bashforth.
447    o ecco
448      - enable trend removal from SSH anomaly obs.
449    o adjoint
450      - a fix for PmEpR when #undef EXACT_CONSERV
451      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
452      - try to fix "hidden" recomp. in forward_step for NLFS
453        (NLFS seems broken sometimes after I checked it in)
454    o seaice:
455     - add c-grid version of the dynamic solver:
456       + three new routines that are the c-grid substitute lsr, dynsolver
457         and ostres
458       + put a few fields that were local to dynsolver into global common
459         blocks, so that I can move the computation of stresses etc into
460         seaice_lsr (saves coding but may break the adjoint).
461     - replace more hardwired parameters by runtime parameters
462     - add ice masks that mask the rhs of the implicit solvers where there
463       is no ice (commented out in seaice_dynsolver, because i am not sure
464       if this works properly), eventually this should replace the clipping
465       of ice velocities in seaice_dynsolver to +/-40cm/s.
466    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
467      include it only where its needed
468    o move balancing of fluxes before the call of external_forcing_surf
469    o seaice:
470      - correct units of turning angles (now they are really in degrees)
471      - move computation of GWATX/Y out of main routine into dynsolver
472      - initialize GWATX/Y in seaice_init
473    o Apply mask on Fresh-Water flux (needed for SSH forcing).
474      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
475    o seaice: add runtime flags for turning angles (default to zero)
476    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
477      and trend from exf forcing and ctrl control adjustments
478    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
479      (since checkpoint57x_post)
480    o change the default rotation period to 86164.s = the Earth rotation
481    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
482      and based on a reference stratification. Tested within hs94.cs-32x32x5.
483    o seaice advection: add code for choosing between the default (2nd order
484      central differences) and multiDim advection schemes provided by
485      pkg/generic_advdiff
486    o seaice:
487      - removed all references to SEAICE_GRID.h fields from
488        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
489        (cubed-sphere configuration will change a little)
490      - grid computations in seaice_init are obsolete now.
491      - cleaned up code a little so that is easier to read (hopefully).
492      - added new (better?) discretizations of default advection and diffusion
493        (turn on with SEAICEuseFluxForm)
494      - replace 1 in 3d global fields by kSurface in growth.F
495      
496    checkpoint58a_post
497    o seaice:
498      - bug fix in advect.F
499    o shelfice:
500      - separate shelfice load anomaly from pload (breaks with time
501        dependent forcing), => introduce constant field shelficeLoadAnomaly.
502        Its default is 0., but it may be computed more cleverly from (unknown)
503        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
504        done offline. A good approximation of the pressure load anomaly is
505        necessary to avoid large initial adjustment processes underneath
506        deep-reaching shelfice.
507      - small fix in ISOMIP shelfice_thermodynamics
508      - add more sophisticated thermodynamics of Hellmer (1989), this is
509        now the default
510      - give a few constants more intuitive names
511    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
512      if bulk formulae are used in long integration (especially EmPmR). Turn
513      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
514      if balancePrintMean, the imbalance that is substracted is printed to
515      STDOUT.
516    o fix bug (typo) in obcs_apply_eta.F
517    o add a new package shelfice which enables us to model the circulation
518      underneath shelf-ice with draughts of hundreds of meters.
519     - works
520     - to do: + include improved thermodynamics
521              + check whether kSurfC (from model/inc/SURFACE.h) can be used
522                instead of new field kTopC
523              + can we use topoFile, Ro_surf and existing code in ini_depth.F
524                instead of new field R_shelfIce and new code in ini_depth.F
525                and ini_mask_etc.F?
526              + adjust vertical mixing schemes?
527    o seaice pkg:
528     - add a cpp-flag to include a simple formula for a salinity dependent
529       freezing point of sea water at the surface
530     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
531       meridional stresses are now different (and hopefully correct)
532    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
533       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
534       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
535    o pkg/diagnostics: add options and parameters for regional-statistics
536       diagnostics ; define regions by reading a region-mask from a file
537       (might add other options later)
538    o pkg/bulk_force:
539     - add option and parameters to use AIM surface-flux formulae.
540     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
541       others forcing fields (defined in PARM05, parameter file "data") are loaded
542       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
543     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
544     - use the right EXCH call for uwind,vwind (to work on CS-grid).
545     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
546       and parameters (note: calcWindStress replaces .NOT.readwindstress).
547     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
548    
549    checkpoint58
550    o add "--embed-source" option to genmake2 which, when the supporting
551      tools can be compiled (as determined by genmake2) will turn on the
552      embed_files package which then embeds the entire MITgcm source code
553      (*.[fFhc] + Makefile) used for the build within the executable
554      - requested by CNH but off by default
555      - adds a paltry <9MB to the mitgcmuv executable in most cases
556      - only writes the output when useEMBEDSRC in eedata is true
557    o clean up 3-dim. relaxation codes:
558      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
559      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
560      * Thanks to Tom Haine for testing!
561    
562    checkpoint57z_post
563    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
564      affects output (@ truncation level) of exp. plume_on_slope ; updated.
565    o fix the pickup behavior for obcs in combination with ptracers
566    o fix a bug in ptracers_external_fields_load
567    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
568      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
569    o transfered surface NH pressure to eta field (if exactConserv).
570    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
571         and update lab_sea output.txt file.
572    o completing 3-dim. relaxation code: additional term
573         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
574      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
575      * At compile time, in "EXF_OPTIONS.h" set
576          #define  ALLOW_CLIMTEMP_RELAXATION
577          #define  ALLOW_CLIMSALT_RELAXATION
578      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
579          tauThetaClimRelax3Dim = 15552000.0,
580          tauSaltClimRelax3Dim  = 15552000.0,
581      * 3 cases:
582          1) Use a constant-in-time 3-dim. field
583          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
584          3) Real-time relax. to time-evolving prescribed field
585    o Adding Laplacian-type smoothness constraint on
586      initial and boundary (forcing) controls (ic, bc)
587      * enable at compile-time via
588        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
589      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
590      * Absolute scale somewhat unclear so far
591      * no area weighting was included since no other cost term does so far
592    
593    checkpoint57y_post
594    First step for a NLFS adjoint
595    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
596    o new init. routines for calc_r_star, calc_surf_dr
597    o still need to deal with ini_masks_etc
598    o testreport seemed happy
599    checkpoint57y_pre
600    
601    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
602    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
603    o add new offset feature to offline pkg (plus minor cleanup)
604    o cfc fixes for final year of integration
605    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
606      be in GCHEM_OPTIONS).
607    
608    checkpoint57x_post
609    o fix testreport Pb in multiple test experiment.
610    o cleanup our namelist syntax in verification:
611      - make it more F95 standards compliant (some work still needed)
612      - allows the vast majority of our tests to work with gfortran
613    o Non-Hydrostatic:
614     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
615     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
616    o Allow to apply AB on T,S rather than on AB(gT,gS):
617     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
618     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
619       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
620     - need a "clever" read_pickup to restart from the other AB formulation
621    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
622    o remove some unused variables (reduces number of compiler warnings)
623    o adjoint
624      * Disable useVariableViscosity for adjoint for time being
625        (there are a number of extensive recomputations)
626      * Initialize certain variables needed for adjoint
627    
628    checkpoint57w_post
629    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
630                 fix the singleCpuIO RS version of MDSWRITEFIELD
631       and add a WARNING if using globalFiles=T with multi-processors.
632    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
633      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
634    o tracer advection scheme:
635      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
636       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
637       was not very convenient).
638      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
639       (further tests needed for the implicit DST & Flux-Limiter schemes).
640    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
641      and sRef for convenience, handy, when you want to initialize
642      ptracers in a large domain with a constant non-zero value. Also,
643      untangle ptracers_init.F a little.
644    
645    checkpoint57v_post
646    o change dome exp. to use variable viscosity in side-drag terms.
647  o remove all the files from the cfc_offline test since they are now  o remove all the files from the cfc_offline test since they are now
648    incorporated into tutorial_cfc_offline which has been producing    incorporated into tutorial_cfc_offline which has been producing
649    identical results for a few days of testing    identical results for a few days of testing
650    o add new parameter: sideDragFactor to enable half-slip-side BC
651      and change side-drag S/R to use viscosity from mom_calc_visc
652      (can switch back by setting sideDragFactor=0.); affects results at
653      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
654       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
655  o vorticity & strain are now computed without masking, to account for  o vorticity & strain are now computed without masking, to account for
656    no-slip-side BC in variable viscosity calculation ; mask is applied    no-slip-side BC in variable viscosity calculation ; mask is applied
657    anyway later on, before computing advection/coriolis terms.    anyway later on, before computing advection/coriolis terms.
658  o modify exp4 to test new obcs support reading from external files  o modify exp4 to test new obcs support for reading from external files
659    and for passive tracers    and for passive tracers
660  o fix behavior of ptracers_monitor when monitor output is written to a  o fix behavior of ptracers_monitor when monitor output is written to a
661    netcdf-file; still not independent of monitor.F (writes in the same    netcdf-file; still not independent of monitor.F (writes in the same

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