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revision 1.519 by heimbach, Thu Jul 28 14:35:47 2005 UTC revision 1.772 by jmc, Fri Feb 16 00:30:01 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 adding precip control xx_precip  o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
8  o moved ptracer ctrl index 17 -> 32  o move call to cal_readparms up to make calendar parameters/variable available
9      to all packages
10    
11    checkpoint58v_post
12    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
13      useDynP_inEos_Zc tested.
14    o pkg/exf: changes to properly interpolate/mask/scale initial fields
15    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
16      and portions thereof.  See read_cs.txt for description and examples.
17    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
18      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
19      following the great-circle arc between those 2 points.
20    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
21      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
22    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
23     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
24     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
25     - still needs work (not working with some options ; efficiency to improve)
26       and serious testing.
27     - use this scheme for temperature & salinity in 2 advection test exp.:
28       advect_xy & advect_xz, respectively.
29    
30    checkpoint58u_post
31    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
32    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
33    o testreport: add option "-skipdir" to skip some test.
34    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
35      momentum calculation.
36    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
37    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
38      remove checkpoint.F and the_correction_step.F (no longer used);
39      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
40    o add option (linFSConserveTr) to correct for tracer source/sink due to
41      Linear Free surface
42    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
43    o pkg/thsice: fix reading mnc-pickups
44    
45    checkpoint58t_post
46    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
47    o pkg/mdsio:
48     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
49       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
50       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
51     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
52     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
53       either MDS_READ_FIELD or MDS_WRITE_FIELD )
54     - new S/R (to replace MDSWRITEMETA), which allows to write more
55       informations (variable names, time ...) to meta files.
56     - modify rdmds.m to give back the meta file content.
57    o pkg/diagnostics: change vertical interpolation to be safer, and more
58       flexible (define p-levels to interpolate to in data.diagnostics);
59      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
60       diagnostic pointer.
61    o pkg/seaice: more cleaning up of seaice_growth, added many comments
62    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
63    o fix multi-category seaice:
64     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
65       SEAICE_MULTICATEGORY
66     - fix short wave heat flux
67    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
68       and allow to use EVP solver. Change forward lab_sea: test both EVP
69       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
70    o Initial check-in of lab_sea adjoint
71      (very similar to natl_box_adjoint/code_seaice)
72      * used C-grid and EVP solver
73      * used KPP, GM/Redi
74      * uses inAdExact=.TRUE.
75      * gradient checks fail for both ADM and TLM
76        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
77        f.d. gradients actually seem more problematic than ADM, TLM gradients;
78        issue is related to forward mismatch between g77 an ifort
79    o pkg/seaice: overhaul of thermodynamics
80     - growth.F and groatb.F are replaced by new routine seaice_growth.F
81     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
82     - move a few global fields out of SEAICE.h into seaice_growth.F and
83       make them 2D (FICE/QNETO/ ...)
84     - remove FO (it is the same as QNETO)
85     - introduce a few local fields to avoid modifying external fields such
86       as atemp, etc.
87    
88    checkpoint58s_post
89    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
90      changed exf_set_gen.F so that
91        genperiod=0 means input file is one time-constant field and
92        genperiod=-12 means input file contains 12 monthly means
93    o CG2D: use pre-computed solver main-diagonal (stored in common block);
94      this affects truncation error ; generate new output file for exp. which
95      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
96        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
97        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
98        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
99        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
100        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
101    o start implementation of deep-atmosphere and anelastic formulation
102    o verification: remove 2nd copy of input files and use script "prepare_run"
103      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
104    o mom_common/vecinv/fluxform: fix a few initialisation isssues
105    o profiles: fix for multithreaded case
106    
107    o diagnostics: rename few diags:
108      s/'PRESSURE'/'RCENTER '/g
109      s/'TICE    '/'oceFreez'/g
110      s/'TAUX    '/'oceTAUX '/g
111      s/'TAUY    '/'oceTAUY '/g
112      s/'SWFLUX  '/'oceQsw  '/g
113      s/DIFx/DFxE/g
114      s/DIFy/DFyE/g
115      and add few ocean-forcing diagnostics:
116      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
117    o modifications to pkg/seaice/growth.F and budget.F, which change results of
118      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
119      as actual snow thickness.  It now refers everywhere to effective snow
120      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
121    
122    checkpoint58r_post
123    o modifications to pkg/seaice/growth.F, which change results of
124      lab_sea experiment: fixes pertain to melting snow over open water, to
125      masking EVAP under sea ice, and to using the correct AREA variable for
126      computations of EVAP, PRECIP, HSNOW, and GHEFF
127    o add ability to read bathy, salt, and theta using MNC (off by def)
128    o add flooding algorithm and advection of HSNOW for pkg/seaice;
129      both are turned off by default and do no change any results
130    o seaice advection with pkg/thsice: a step toward the use of non-linear
131      advection scheme, but #ifdef or commented out for now (requires more EXCH).
132    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
133      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
134      in natl_box (affects results @ truncation level: update output.txt)
135    o multi-threading and IO:
136      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
137      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
138        (needed to work with SingleCpuIO): tested in all verif. exp.
139    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
140      affects the results (but none of the verification test uses this scheme).
141    o Adding some pkg/diagnostics capability to pkg/seaice
142      (will certainly be subject to changes)
143    o ctrl: adding new control variables:
144      lwflux, lwdown, evap, snowprecip, apressure, runoff
145    
146    checkpoint58q_post
147    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
148      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
149      high_res_cube configuration by 4% on Columbia.
150    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
151      add (in global_with_exf/code) a version of EXF_INTERP_READ without
152      dynamical allocation (seems to work in multi-threaded).
153    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
154      single CPU io) so that TAF does not have to see EESUPPORT.h
155    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
156    
157    checkpoint58p_post
158    o obcs: stop if obcs is used with useCDscheme = .true.
159    o shelfice:
160     - fix a sign error so that no slip at shelfice interface works
161     - remove stop for combination non-hydrostatic code and shelfice. That does
162       not mean, that the results are correct, but at least they are numerically
163       stable
164    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
165    o added adjoint exch routined for all exch*3d* routines
166      and updated flow directives
167    
168    checkpoint58o_post
169    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
170      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
171    o change controling S/R for writing pickup file (new S/R do_write_pickup)
172      and clean-up reading/writing of pickup files.
173    o fix local version of read/write pickup (NH part) in rotating_tank/code
174    o simplify EXCH interface:
175     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
176     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
177    o added the regrid package
178    o shelfice:
179     - add a simple boundary layer scheme to reduce noise
180     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
181    
182    checkpoint58n_post
183    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
184       local variable (not in common block).
185    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
186      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
187      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
188        to work with SingleCpuIO.
189    o add "_d 0" to real constant of pkg/cfc subroutines ;
190       update exp. cfc_exemple & tutorial_cfc_offline output files.
191    o multi-threading and IO:
192      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
193        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
194      - barrier before and after reading.
195      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
196      - avoid using MDS_WRITELOCAL for LAND pkg output.
197      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
198        common-block variables ; Allows multi-threading with master-thread IO.
199    o change default MAX_NO_THREADS from 32 to 4 ;
200      and stop cleanly when MAX_NO_THREADS is too small.
201    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
202    
203    checkpoint58m_post
204    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
205       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
206    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
207       keep global_ocean.90x40x15 (for AD testing) with former secondary test
208       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
209    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
210        add MITgcm_tutorials (= code + all the tutorials)
211    o ecco, option to compute cost for total ssh (mean+anom)
212    o consistent with addition of ptracer and ssh in pkg/profiles
213    o profiles: adding ptracer and ssh
214    o testreport: change multi-test output-file name
215      (from output.txt.{name} to output.{name}.txt)
216    o profiles: now ok for mutli-tiles case
217    o seaice: add 4 parameters for different advection schemes for area,
218      (effective) seaice thickness, enthalphy, and snow height. Their default
219      is the standard parameter SEAICEadvScheme
220    o calc_gw:
221     - add cosFacU in zonal viscous flux (harmonic.visc.).
222     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
223       of tutorial_plume_on_slope.
224    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
225    o calc_gw: true flux-form, account for horizontal grid spacing.
226      update rotating_tank results, but not plume_on_slope (affected at
227      truncation level, 11 digits).
228    
229    checkpoint58l_post
230    o calc_gw:
231     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
232     - remove side-drag for now (need to fix it); update plume_on_slope results.
233     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
234    o commit code to make SST/SSS weights spatially variable
235      (based on either variable in-situ or variable initial T/S weights)
236    o pkg/ecco:
237      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
238        now based on horizontally varying weights wthetaLev, wsaltLev
239      * cost_averagesflags now returns year indices in addition to day, month
240      * sflux balance is performed on annual basis
241        (sflxumm, sfluxmm2, bal_sfluxmm)
242      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
243        including separate counting and multipliers
244    o pkg/rbcs
245      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
246    
247    checkpoint58k_post
248    o testreport:
249     - always build in dir. "build" (if not there, mkdir build instead of building
250       & running in input)
251     - run in dir run (if it exists), in build otherwise.
252     - call prepare_run (if input/prepare_run exists)
253     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
254    o pkg/exf modifications to interpolation and rotation routines for more
255       reasonable treatment of North Pole singularity: for tracers North Pole
256       value is set to northernmost zonal-mean value, for zonal velocity it is
257       set to zero, and for meridional velocity it is set to northernmost value.
258    o pkg/exf/exf_check_range.F
259     - add tile index to diagnostics and move stop statement to the very
260       end of the routine.
261    o pkg/diagnostics: (diagnostics_main_init.F)
262      define title of isomorphic variables according to the current config.
263    o pkg/thsice with pkg/seaice dynamics:
264    - fix domain of computation (interior only, required for exf) and do exchanges
265    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
266    o towards a standard way of dealing with multi-threading in MONITOR
267      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
268    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
269       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
270    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
271    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
272    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
273       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
274    o tracer advection:
275     - clean-up and simplify calc_common_factors.F
276     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
277       advection subroutine (but still not used within DST advection S/R)
278    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
279    
280    checkpoint58j_post
281    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
282      from file (collects calls previously in FORWARD_STEP)
283    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
284    o adjoint store dir. adjusted accordingly
285    o genmake2
286      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
287    
288    checkpoint58i_post
289    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
290      on wind stress (SEAICEstressFactor defaults to 1.)
291    o Total number of Timers is finite (<=40): comment out 2 non-essential one
292      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
293    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
294      on CS-grid: no longer loosing mass.
295    o exf & curvilinear-grid: no longer modify longitude xC & xG.
296    o pkg/ggl90: fix sloppy output and fix a bug
297    o pkg/seaice: added SEAICEuseEVPpickup parameter
298      - Set to false in order to start EVP solver with
299        non-EVP pickup files when using SEAICEuseEVP
300      - fix sign error in diffusion in seaice_calc_rhs
301    
302    checkpoint58h_post
303    * Modifications for bottom topography control
304      o replace hFacC by _hFacC at various places
305      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
306      o add non-self-adjoint cg2d_nsa
307      o update autodiff support routines
308      o re-initialise hfac after ctrl_depth_ini
309      o works for 5x5 box, doesnt work for global_ocean.90x40x15
310    * Adding verification for 5x5 box (4-layer) bottom topography control
311    
312    checkpoint58g_post
313    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
314       used for mean seasonal cycle, mean diurnal cycle); add an example
315       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
316    o pkg/ggl90:
317      - add parameter (minimum surface kinetic energy)
318      - fix bug (avoiding division by zero)
319    o couple pkg/thsice to pkg/seaice:
320      - modify advection in seaice to accomodate new scalar fields to be advected
321      - only muliDimAdection scheme work with seaice/thsice
322      - mapping of thsice-variables to seaice-variables, back and forth
323      - does not break the verification experiments, but does not give the
324        desired results either
325    o pkg/seaice
326      - make (default) second order advection a bit less confusing?
327    
328    checkpoint58f_post
329    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
330      to pkg/seaice):
331      - new routines thsice_map_exf and thsice_get_exf provide the interface
332      - add an additional formal parameter to thsice_solve4temp
333    o pkg/exf:
334      - add new fields wspeed, snowprecip (to be able to couple to thsice)
335      - correct Stefan-Boltzmann constant
336      - new parameter for longwave surface emittance
337      - separate some stuff from exf_bulkformulae into new routines  
338        exf_radiation, exf_wind
339      - add new parameters and constants: longwave emissivity for ocean, ice
340        and snow, evaporation parameters over ice
341      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
342        either wind from stress or stress from wind
343    o pkg/thSIce:
344    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
345    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
346       and THSICE_CALC_THICKN
347    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
348    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
349      to make debugging easier.
350    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
351    o pkg/bulk_force:
352      - clean-up comments and parameters ;
353      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
354    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
355      generate new output for test-experiment: aim.5l_cs.thSI
356    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
357      testreport accordingly
358    
359    checkpoint58e_post
360    o SEAICE_CGRID adjoint done
361    o R_STAR adjoint implemented.
362      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
363      * need to sort out init. of h0facc, etc.
364    o Make pkg/profile fully independent of ecco,cost, etc. stuff
365      to be able to use it in pure forward.
366    
367    checkpoint58d_post
368    o upgrade simple test-experiment to tutorial example:
369     step.1: duplicate the experiment and (step.2) will remove the old copy.
370      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
371      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
372      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
373      tutorial_global_oce_biogeo    <- copy of dic_example
374      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
375      tutorial_plume_on_slope       <- copy of plume_on_slope
376      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
377      tutorial_global_oce_optim     <- empty for now (David ?)
378      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
379     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
380    o correct a sign problem in cost_scat.F
381    o obcs and ptracers: fix boundary conditions for advections schemes
382      with larger stencil
383    o thsice adjoint: start
384    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
385      completeness
386    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
387      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
388    o ptracers adjoint:
389      * avoid extensive recomputatations
390      * fix missing re-init. of gptr (missed by TAF)
391    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
392      me to turn off the excessive output to STDOUT that this package produces
393    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
394      and add those terms in Vector-Invariant formulation.
395    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
396      if the control period (xx_hfluxperiod etc) is 0
397    o in profiles pkg, clean routines and fix details
398    o in ecco pkg, reading ssh data:
399      fix problem in case the model does not start at iter0=0
400    o fix mnc-pickup/restart for ptracers
401    o new package prifiles:
402      code to compute profile-based cost by Gael Forget
403      (modifs in ecco, ctrl, autodiff)
404    o Benign bug fix in initialization (spotted by M. Mazloff) of
405      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
406    
407    checkpoint58c_post
408    o adjoint: finish NLFS adjoint and provide reference output in
409      verification/global_ocean.90x40x15/results_ad_nlfs
410    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
411      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
412      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
413      with SEAICE_CGRID defined.
414    o move calendarDumps from "data" to "data.cal" and clean-up the code
415      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
416    o add useEXF & useCAL flags (for now, set in hard-coded way)
417    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
418      (were missing in NH mode, and wrong in quasihydrostatic mode).
419      waiting for Chris updated version of calc_gw to add those CALLs.
420    o fix bug in quasihydrostatic S/R ;
421      add a test for this option: global_ocean.90x40x15.qshyd
422    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
423      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
424    o add on/off flag useOffLine for package OFFLINE
425    o seaice:
426      - modify advection so that it works also on the C-grid
427      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
428        problem in multi-tile runs with C-grid
429      - add flags for clipping ice velocities and/or masking solver forcing
430      - fix drag (ocean on ice) formulation and a bug that caused noise in the
431        C-grid solver
432      - added a few comments to seaice_diffusion.F
433      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
434        are now exclusive)
435      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
436        required re-ordering the code a little:
437       + make DAIRN global variable (defined in SEAICE)
438       + move computation of the viscosities eta and zeta into a new separate
439         routine (because I need to recompute them in seaice_ocean_stress.F)
440    
441    checkpoint58b_post
442    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
443      update output.txt of exp. aim.5l_cs.thSI
444    o various mnc cleanups and improvements:
445      + shrink lookup tables by factor of ~4
446      + better error reporting when running out of lookup space
447      + able to handle longer path/file names (up to 500 chars)
448    o adjoint:
449      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
450      - TBD: "hidden" mom_vecinv recomp. in dynamics
451    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
452     (allow to differentiate between forcing components using new integer flags:
453      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
454     and add new flag to put Dissipation tendency out of Adams-Bashforth.
455    o ecco
456      - enable trend removal from SSH anomaly obs.
457    o adjoint
458      - a fix for PmEpR when #undef EXACT_CONSERV
459      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
460      - try to fix "hidden" recomp. in forward_step for NLFS
461        (NLFS seems broken sometimes after I checked it in)
462    o seaice:
463     - add c-grid version of the dynamic solver:
464       + three new routines that are the c-grid substitute lsr, dynsolver
465         and ostres
466       + put a few fields that were local to dynsolver into global common
467         blocks, so that I can move the computation of stresses etc into
468         seaice_lsr (saves coding but may break the adjoint).
469     - replace more hardwired parameters by runtime parameters
470     - add ice masks that mask the rhs of the implicit solvers where there
471       is no ice (commented out in seaice_dynsolver, because i am not sure
472       if this works properly), eventually this should replace the clipping
473       of ice velocities in seaice_dynsolver to +/-40cm/s.
474    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
475      include it only where its needed
476    o move balancing of fluxes before the call of external_forcing_surf
477    o seaice:
478      - correct units of turning angles (now they are really in degrees)
479      - move computation of GWATX/Y out of main routine into dynsolver
480      - initialize GWATX/Y in seaice_init
481    o Apply mask on Fresh-Water flux (needed for SSH forcing).
482      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
483    o seaice: add runtime flags for turning angles (default to zero)
484    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
485      and trend from exf forcing and ctrl control adjustments
486    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
487      (since checkpoint57x_post)
488    o change the default rotation period to 86164.s = the Earth rotation
489    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
490      and based on a reference stratification. Tested within hs94.cs-32x32x5.
491    o seaice advection: add code for choosing between the default (2nd order
492      central differences) and multiDim advection schemes provided by
493      pkg/generic_advdiff
494    o seaice:
495      - removed all references to SEAICE_GRID.h fields from
496        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
497        (cubed-sphere configuration will change a little)
498      - grid computations in seaice_init are obsolete now.
499      - cleaned up code a little so that is easier to read (hopefully).
500      - added new (better?) discretizations of default advection and diffusion
501        (turn on with SEAICEuseFluxForm)
502      - replace 1 in 3d global fields by kSurface in growth.F
503      
504    checkpoint58a_post
505    o seaice:
506      - bug fix in advect.F
507    o shelfice:
508      - separate shelfice load anomaly from pload (breaks with time
509        dependent forcing), => introduce constant field shelficeLoadAnomaly.
510        Its default is 0., but it may be computed more cleverly from (unknown)
511        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
512        done offline. A good approximation of the pressure load anomaly is
513        necessary to avoid large initial adjustment processes underneath
514        deep-reaching shelfice.
515      - small fix in ISOMIP shelfice_thermodynamics
516      - add more sophisticated thermodynamics of Hellmer (1989), this is
517        now the default
518      - give a few constants more intuitive names
519    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
520      if bulk formulae are used in long integration (especially EmPmR). Turn
521      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
522      if balancePrintMean, the imbalance that is substracted is printed to
523      STDOUT.
524    o fix bug (typo) in obcs_apply_eta.F
525    o add a new package shelfice which enables us to model the circulation
526      underneath shelf-ice with draughts of hundreds of meters.
527     - works
528     - to do: + include improved thermodynamics
529              + check whether kSurfC (from model/inc/SURFACE.h) can be used
530                instead of new field kTopC
531              + can we use topoFile, Ro_surf and existing code in ini_depth.F
532                instead of new field R_shelfIce and new code in ini_depth.F
533                and ini_mask_etc.F?
534              + adjust vertical mixing schemes?
535    o seaice pkg:
536     - add a cpp-flag to include a simple formula for a salinity dependent
537       freezing point of sea water at the surface
538     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
539       meridional stresses are now different (and hopefully correct)
540    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
541       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
542       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
543    o pkg/diagnostics: add options and parameters for regional-statistics
544       diagnostics ; define regions by reading a region-mask from a file
545       (might add other options later)
546    o pkg/bulk_force:
547     - add option and parameters to use AIM surface-flux formulae.
548     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
549       others forcing fields (defined in PARM05, parameter file "data") are loaded
550       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
551     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
552     - use the right EXCH call for uwind,vwind (to work on CS-grid).
553     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
554       and parameters (note: calcWindStress replaces .NOT.readwindstress).
555     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
556    
557    checkpoint58
558    o add "--embed-source" option to genmake2 which, when the supporting
559      tools can be compiled (as determined by genmake2) will turn on the
560      embed_files package which then embeds the entire MITgcm source code
561      (*.[fFhc] + Makefile) used for the build within the executable
562      - requested by CNH but off by default
563      - adds a paltry <9MB to the mitgcmuv executable in most cases
564      - only writes the output when useEMBEDSRC in eedata is true
565    o clean up 3-dim. relaxation codes:
566      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
567      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
568      * Thanks to Tom Haine for testing!
569    
570    checkpoint57z_post
571    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
572      affects output (@ truncation level) of exp. plume_on_slope ; updated.
573    o fix the pickup behavior for obcs in combination with ptracers
574    o fix a bug in ptracers_external_fields_load
575    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
576      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
577    o transfered surface NH pressure to eta field (if exactConserv).
578    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
579         and update lab_sea output.txt file.
580    o completing 3-dim. relaxation code: additional term
581         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
582      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
583      * At compile time, in "EXF_OPTIONS.h" set
584          #define  ALLOW_CLIMTEMP_RELAXATION
585          #define  ALLOW_CLIMSALT_RELAXATION
586      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
587          tauThetaClimRelax3Dim = 15552000.0,
588          tauSaltClimRelax3Dim  = 15552000.0,
589      * 3 cases:
590          1) Use a constant-in-time 3-dim. field
591          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
592          3) Real-time relax. to time-evolving prescribed field
593    o Adding Laplacian-type smoothness constraint on
594      initial and boundary (forcing) controls (ic, bc)
595      * enable at compile-time via
596        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
597      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
598      * Absolute scale somewhat unclear so far
599      * no area weighting was included since no other cost term does so far
600    
601    checkpoint57y_post
602    First step for a NLFS adjoint
603    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
604    o new init. routines for calc_r_star, calc_surf_dr
605    o still need to deal with ini_masks_etc
606    o testreport seemed happy
607    checkpoint57y_pre
608    
609    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
610    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
611    o add new offset feature to offline pkg (plus minor cleanup)
612    o cfc fixes for final year of integration
613    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
614      be in GCHEM_OPTIONS).
615    
616    checkpoint57x_post
617    o fix testreport Pb in multiple test experiment.
618    o cleanup our namelist syntax in verification:
619      - make it more F95 standards compliant (some work still needed)
620      - allows the vast majority of our tests to work with gfortran
621    o Non-Hydrostatic:
622     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
623     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
624    o Allow to apply AB on T,S rather than on AB(gT,gS):
625     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
626     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
627       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
628     - need a "clever" read_pickup to restart from the other AB formulation
629    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
630    o remove some unused variables (reduces number of compiler warnings)
631    o adjoint
632      * Disable useVariableViscosity for adjoint for time being
633        (there are a number of extensive recomputations)
634      * Initialize certain variables needed for adjoint
635    
636    checkpoint57w_post
637    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
638                 fix the singleCpuIO RS version of MDSWRITEFIELD
639       and add a WARNING if using globalFiles=T with multi-processors.
640    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
641      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
642    o tracer advection scheme:
643      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
644       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
645       was not very convenient).
646      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
647       (further tests needed for the implicit DST & Flux-Limiter schemes).
648    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
649      and sRef for convenience, handy, when you want to initialize
650      ptracers in a large domain with a constant non-zero value. Also,
651      untangle ptracers_init.F a little.
652    
653    checkpoint57v_post
654    o change dome exp. to use variable viscosity in side-drag terms.
655    o remove all the files from the cfc_offline test since they are now
656      incorporated into tutorial_cfc_offline which has been producing
657      identical results for a few days of testing
658    o add new parameter: sideDragFactor to enable half-slip-side BC
659      and change side-drag S/R to use viscosity from mom_calc_visc
660      (can switch back by setting sideDragFactor=0.); affects results at
661      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
662       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
663    o vorticity & strain are now computed without masking, to account for
664      no-slip-side BC in variable viscosity calculation ; mask is applied
665      anyway later on, before computing advection/coriolis terms.
666    o modify exp4 to test new obcs support for reading from external files
667      and for passive tracers
668    o fix behavior of ptracers_monitor when monitor output is written to a
669      netcdf-file; still not independent of monitor.F (writes in the same
670      file).
671    o change default value of tRef (put a uniform, meaningful value for ocean
672      & atmos) and initialize sRef (was missing, as Martin mentioned).
673    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
674      to be proportional to enstrophy dissipation length.  Thus,
675       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
676      This is now consistent with Smagorinsky and with the manual.
677    
678    checkpoint57u_post
679    o OBCS and PTRACERS: add open boundary support for passive tracers
680      - either use homogenous (pseudo) v.Neumann conditions or prescribe
681        OB-values from file; this is not different from the way theta and salinity
682        are treated
683      - however, Orlanski-radiation conditions are not supported, and the model
684        will stop if you use pTracers and Orlanski at the same time.
685      - beefed up the rountine obcs_external_fields_load: now only those open
686        boundary values are overwritten with values from files for which there
687        are really files, otherwise the OB-fields remain untouched. This makes
688        it possible to use different OBs at different ends of the domain (as
689        with EXF)
690    o reduce number of exch calls in shap_filt (s2).
691    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
692      truncation level) 4/5 MLAdjust test results (11&12 digits match).
693    
694    checkpoint57t_post
695    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
696    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
697      same truncation, independent of the face number: affects affects several
698      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
699    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
700      note that biharmonic viscosity + no-slip was not tested in any experiment.
701    o fix bug in non-linear free-surf side-drag ; generate new output for
702      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
703    o make mnc honor the writeBinaryPrec flag for most kinds of output
704    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
705    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
706      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
707    o add brackets in multi-terms sum to get same truncation, independent of
708      the face number (manage to get exactly same value of gU,gV at the cs-edge)
709      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
710    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
711      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
712      a maximum grid-scale Reynolds number.  Also, changes all length calculations
713      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
714      Suggested values of viscosity parameters found in mom_calc_visc.
715      Many new viscosity diagnostics available.
716    
717    checkpoint57s_post
718    o Add clearing-house for viscosity calculations, mom_calc_visc and
719      correct numerous bugs in LeithD and Smagorinsky discretizations.  
720      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
721      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
722      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
723      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
724      The Strain-Tension form is now called with useStrainTensonVisc=.true.
725      ViscAhStrain and viscAhTension are now retired.
726    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
727    o In response to JMC's bug report, genmake2 now ignores any soft-links
728      that it finds in the *current* directory when searching for files.
729      Soft-links found in any other source directories will still work as
730      they did before.
731    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
732      a C routine to unlimit the stack size
733    o mnc-ify pkg/aim snapshot vars
734    o mnc-ify pkg/land as requested by Daniel
735    o various changes to mnc including:
736      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
737      - output can now be grouped so that all files within a group
738          change the ITER portion of their names in lock-step together
739      - can now read ("global") PER-FACE (in addition to PER-TILE) files
740          and works with both EXCH1 and EXCH2 (but needs more testing)
741      - writing works for all verification test cases w/ g77 on Linux
742    
743    checkpoint57r_post
744    o make MNC variable initialization happen earlier
745    o add diagnostics for (almost) each term of the momentum Eq.
746    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
747    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
748    o remove MINIMAL_TAVE_OUTPUT option ;
749      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
750    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
751      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
752    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
753    o add time-dependent SST, SSS control
754    o cost terms in ecco/ modularized (new cost_generic.F)
755    o cost_averages routines are modularized (new cost_averagesgeneric.F)
756    o new infrastructure for seaice model vs. obs misfits in seaice/
757      * driver from the_main_loop.F is seaice_cost_driver.F
758      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
759      * gradient check in Exp. 6a of natl_box_adjoint/
760    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
761      (see README file)
762    
763    checkpoint57q_post
764    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
765    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
766      - bug was reported by Jean-Michel and Ian Fenty
767    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
768      update exp. cpl_aim+ocn output.
769    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
770      Needed for high-res. runs with large global files
771      to be able to limit tapelev size
772    o Changed some tests for adjoint:
773      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
774      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
775      * global_ocean.90x40x15/ back to default 3-level checkpointing
776    o Modifications to enable scripted COMMON to MODULE conversion
777      * verification/OpenAD/code/ has necessary scripts and description;
778      * converts, compiles and runs successfully;
779    
780    checkpoint57p_post
781    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
782    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
783      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
784    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
785    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
786      (was already the case for dissipation with mom_vecinv,
787       and also the case for grad.PhiHyd when staggered-timeStep)
788      This will allow to put dissipation out-off the AB time-stepping.
789     Unfortunately, affects truncation error. Update output of exp. that "fails"
790      (cg2d matching number) and leave the others for later: front_relax(10),
791      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
792      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
793    
794    checkpoint57o_post
795    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
796      (2) its ready to be documented during the 20050801 DocFest
797    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
798      for ideal_2D_oce and lab_sea on linux_ia32_g77
799    o set to #undef CTRL_SET_OLD_MAXCVARS_30
800      in global1x1_tot/code_seaice_adj to access indices 32, 33
801      (worth another tag)
802    
803    checkpoint57n_post
804    o adding precip control xx_precip 32
805    o adding swflux control xx_swflux 33
806    o Replacing 10 forcing penalty cost routines by 1 generic.
807    o Implementing partitioning in time-mean and variable adjustment
808      for atmos. state.
809    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
810  o in natl_box_adjoint:  o in natl_box_adjoint:
811    * updated: results_bulk/    * updated exp 1 to 10
812    * not yet updated: results/, results_seaice/      (but does not have time-mean vs. variable split results yet)
813    o updated global1x1/*_seaice_adj/
814      to incorporate latest changes
815    o enable useSingleCpuIO for mdsio vector routines
816      (applies in particular to tapelev I/O)
817    o removed inefficient K-loop in all active_file*control*.F
818    
819  checkpoint57m_post  checkpoint57m_post
820  o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)  o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)

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