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revision 1.519 by heimbach, Thu Jul 28 14:35:47 2005 UTC revision 1.766 by jmc, Tue Jan 16 19:45:13 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 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
8  o moved ptracer ctrl index 17 -> 32   - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
9     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
10     - still needs work (not working with some options ; efficiency to improve)
11       and serious testing.
12     - use this scheme for temperature & salinity in 2 advection test exp.:
13       advect_xy & advect_xz, respectively.
14    
15    checkpoint58u_post
16    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
17    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
18    o testreport: add option "-skipdir" to skip some test.
19    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
20      momentum calculation.
21    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
22    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
23      remove checkpoint.F and the_correction_step.F (no longer used);
24      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
25    o add option (linFSConserveTr) to correct for tracer source/sink due to
26      Linear Free surface
27    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
28    o pkg/thsice: fix reading mnc-pickups
29    
30    checkpoint58t_post
31    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
32    o pkg/mdsio:
33     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
34       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
35       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
36     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
37     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
38       either MDS_READ_FIELD or MDS_WRITE_FIELD )
39     - new S/R (to replace MDSWRITEMETA), which allows to write more
40       informations (variable names, time ...) to meta files.
41     - modify rdmds.m to give back the meta file content.
42    o pkg/diagnostics: change vertical interpolation to be safer, and more
43       flexible (define p-levels to interpolate to in data.diagnostics);
44      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
45       diagnostic pointer.
46    o pkg/seaice: more cleaning up of seaice_growth, added many comments
47    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
48    o fix multi-category seaice:
49     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
50       SEAICE_MULTICATEGORY
51     - fix short wave heat flux
52    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
53       and allow to use EVP solver. Change forward lab_sea: test both EVP
54       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
55    o Initial check-in of lab_sea adjoint
56      (very similar to natl_box_adjoint/code_seaice)
57      * used C-grid and EVP solver
58      * used KPP, GM/Redi
59      * uses inAdExact=.TRUE.
60      * gradient checks fail for both ADM and TLM
61        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
62        f.d. gradients actually seem more problematic than ADM, TLM gradients;
63        issue is related to forward mismatch between g77 an ifort
64    o pkg/seaice: overhaul of thermodynamics
65     - growth.F and groatb.F are replaced by new routine seaice_growth.F
66     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
67     - move a few global fields out of SEAICE.h into seaice_growth.F and
68       make them 2D (FICE/QNETO/ ...)
69     - remove FO (it is the same as QNETO)
70     - introduce a few local fields to avoid modifying external fields such
71       as atemp, etc.
72    
73    checkpoint58s_post
74    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
75      changed exf_set_gen.F so that
76        genperiod=0 means input file is one time-constant field and
77        genperiod=-12 means input file contains 12 monthly means
78    o CG2D: use pre-computed solver main-diagonal (stored in common block);
79      this affects truncation error ; generate new output file for exp. which
80      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
81        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
82        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
83        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
84        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
85        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
86    o start implementation of deep-atmosphere and anelastic formulation
87    o verification: remove 2nd copy of input files and use script "prepare_run"
88      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
89    o mom_common/vecinv/fluxform: fix a few initialisation isssues
90    o profiles: fix for multithreaded case
91    
92    o diagnostics: rename few diags:
93      s/'PRESSURE'/'RCENTER '/g
94      s/'TICE    '/'oceFreez'/g
95      s/'TAUX    '/'oceTAUX '/g
96      s/'TAUY    '/'oceTAUY '/g
97      s/'SWFLUX  '/'oceQsw  '/g
98      s/DIFx/DFxE/g
99      s/DIFy/DFyE/g
100      and add few ocean-forcing diagnostics:
101      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
102    o modifications to pkg/seaice/growth.F and budget.F, which change results of
103      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
104      as actual snow thickness.  It now refers everywhere to effective snow
105      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
106    
107    checkpoint58r_post
108    o modifications to pkg/seaice/growth.F, which change results of
109      lab_sea experiment: fixes pertain to melting snow over open water, to
110      masking EVAP under sea ice, and to using the correct AREA variable for
111      computations of EVAP, PRECIP, HSNOW, and GHEFF
112    o add ability to read bathy, salt, and theta using MNC (off by def)
113    o add flooding algorithm and advection of HSNOW for pkg/seaice;
114      both are turned off by default and do no change any results
115    o seaice advection with pkg/thsice: a step toward the use of non-linear
116      advection scheme, but #ifdef or commented out for now (requires more EXCH).
117    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
118      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
119      in natl_box (affects results @ truncation level: update output.txt)
120    o multi-threading and IO:
121      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
122      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
123        (needed to work with SingleCpuIO): tested in all verif. exp.
124    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
125      affects the results (but none of the verification test uses this scheme).
126    o Adding some pkg/diagnostics capability to pkg/seaice
127      (will certainly be subject to changes)
128    o ctrl: adding new control variables:
129      lwflux, lwdown, evap, snowprecip, apressure, runoff
130    
131    checkpoint58q_post
132    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
133      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
134      high_res_cube configuration by 4% on Columbia.
135    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
136      add (in global_with_exf/code) a version of EXF_INTERP_READ without
137      dynamical allocation (seems to work in multi-threaded).
138    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
139      single CPU io) so that TAF does not have to see EESUPPORT.h
140    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
141    
142    checkpoint58p_post
143    o obcs: stop if obcs is used with useCDscheme = .true.
144    o shelfice:
145     - fix a sign error so that no slip at shelfice interface works
146     - remove stop for combination non-hydrostatic code and shelfice. That does
147       not mean, that the results are correct, but at least they are numerically
148       stable
149    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
150    o added adjoint exch routined for all exch*3d* routines
151      and updated flow directives
152    
153    checkpoint58o_post
154    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
155      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
156    o change controling S/R for writing pickup file (new S/R do_write_pickup)
157      and clean-up reading/writing of pickup files.
158    o fix local version of read/write pickup (NH part) in rotating_tank/code
159    o simplify EXCH interface:
160     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
161     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
162    o added the regrid package
163    o shelfice:
164     - add a simple boundary layer scheme to reduce noise
165     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
166    
167    checkpoint58n_post
168    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
169       local variable (not in common block).
170    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
171      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
172      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
173        to work with SingleCpuIO.
174    o add "_d 0" to real constant of pkg/cfc subroutines ;
175       update exp. cfc_exemple & tutorial_cfc_offline output files.
176    o multi-threading and IO:
177      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
178        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
179      - barrier before and after reading.
180      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
181      - avoid using MDS_WRITELOCAL for LAND pkg output.
182      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
183        common-block variables ; Allows multi-threading with master-thread IO.
184    o change default MAX_NO_THREADS from 32 to 4 ;
185      and stop cleanly when MAX_NO_THREADS is too small.
186    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
187    
188    checkpoint58m_post
189    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
190       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
191    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
192       keep global_ocean.90x40x15 (for AD testing) with former secondary test
193       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
194    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
195        add MITgcm_tutorials (= code + all the tutorials)
196    o ecco, option to compute cost for total ssh (mean+anom)
197    o consistent with addition of ptracer and ssh in pkg/profiles
198    o profiles: adding ptracer and ssh
199    o testreport: change multi-test output-file name
200      (from output.txt.{name} to output.{name}.txt)
201    o profiles: now ok for mutli-tiles case
202    o seaice: add 4 parameters for different advection schemes for area,
203      (effective) seaice thickness, enthalphy, and snow height. Their default
204      is the standard parameter SEAICEadvScheme
205    o calc_gw:
206     - add cosFacU in zonal viscous flux (harmonic.visc.).
207     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
208       of tutorial_plume_on_slope.
209    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
210    o calc_gw: true flux-form, account for horizontal grid spacing.
211      update rotating_tank results, but not plume_on_slope (affected at
212      truncation level, 11 digits).
213    
214    checkpoint58l_post
215    o calc_gw:
216     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
217     - remove side-drag for now (need to fix it); update plume_on_slope results.
218     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
219    o commit code to make SST/SSS weights spatially variable
220      (based on either variable in-situ or variable initial T/S weights)
221    o pkg/ecco:
222      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
223        now based on horizontally varying weights wthetaLev, wsaltLev
224      * cost_averagesflags now returns year indices in addition to day, month
225      * sflux balance is performed on annual basis
226        (sflxumm, sfluxmm2, bal_sfluxmm)
227      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
228        including separate counting and multipliers
229    o pkg/rbcs
230      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
231    
232    checkpoint58k_post
233    o testreport:
234     - always build in dir. "build" (if not there, mkdir build instead of building
235       & running in input)
236     - run in dir run (if it exists), in build otherwise.
237     - call prepare_run (if input/prepare_run exists)
238     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
239    o pkg/exf modifications to interpolation and rotation routines for more
240       reasonable treatment of North Pole singularity: for tracers North Pole
241       value is set to northernmost zonal-mean value, for zonal velocity it is
242       set to zero, and for meridional velocity it is set to northernmost value.
243    o pkg/exf/exf_check_range.F
244     - add tile index to diagnostics and move stop statement to the very
245       end of the routine.
246    o pkg/diagnostics: (diagnostics_main_init.F)
247      define title of isomorphic variables according to the current config.
248    o pkg/thsice with pkg/seaice dynamics:
249    - fix domain of computation (interior only, required for exf) and do exchanges
250    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
251    o towards a standard way of dealing with multi-threading in MONITOR
252      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
253    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
254       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
255    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
256    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
257    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
258       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
259    o tracer advection:
260     - clean-up and simplify calc_common_factors.F
261     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
262       advection subroutine (but still not used within DST advection S/R)
263    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
264    
265    checkpoint58j_post
266    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
267      from file (collects calls previously in FORWARD_STEP)
268    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
269    o adjoint store dir. adjusted accordingly
270    o genmake2
271      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
272    
273    checkpoint58i_post
274    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
275      on wind stress (SEAICEstressFactor defaults to 1.)
276    o Total number of Timers is finite (<=40): comment out 2 non-essential one
277      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
278    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
279      on CS-grid: no longer loosing mass.
280    o exf & curvilinear-grid: no longer modify longitude xC & xG.
281    o pkg/ggl90: fix sloppy output and fix a bug
282    o pkg/seaice: added SEAICEuseEVPpickup parameter
283      - Set to false in order to start EVP solver with
284        non-EVP pickup files when using SEAICEuseEVP
285      - fix sign error in diffusion in seaice_calc_rhs
286    
287    checkpoint58h_post
288    * Modifications for bottom topography control
289      o replace hFacC by _hFacC at various places
290      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
291      o add non-self-adjoint cg2d_nsa
292      o update autodiff support routines
293      o re-initialise hfac after ctrl_depth_ini
294      o works for 5x5 box, doesnt work for global_ocean.90x40x15
295    * Adding verification for 5x5 box (4-layer) bottom topography control
296    
297    checkpoint58g_post
298    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
299       used for mean seasonal cycle, mean diurnal cycle); add an example
300       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
301    o pkg/ggl90:
302      - add parameter (minimum surface kinetic energy)
303      - fix bug (avoiding division by zero)
304    o couple pkg/thsice to pkg/seaice:
305      - modify advection in seaice to accomodate new scalar fields to be advected
306      - only muliDimAdection scheme work with seaice/thsice
307      - mapping of thsice-variables to seaice-variables, back and forth
308      - does not break the verification experiments, but does not give the
309        desired results either
310    o pkg/seaice
311      - make (default) second order advection a bit less confusing?
312    
313    checkpoint58f_post
314    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
315      to pkg/seaice):
316      - new routines thsice_map_exf and thsice_get_exf provide the interface
317      - add an additional formal parameter to thsice_solve4temp
318    o pkg/exf:
319      - add new fields wspeed, snowprecip (to be able to couple to thsice)
320      - correct Stefan-Boltzmann constant
321      - new parameter for longwave surface emittance
322      - separate some stuff from exf_bulkformulae into new routines  
323        exf_radiation, exf_wind
324      - add new parameters and constants: longwave emissivity for ocean, ice
325        and snow, evaporation parameters over ice
326      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
327        either wind from stress or stress from wind
328    o pkg/thSIce:
329    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
330    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
331       and THSICE_CALC_THICKN
332    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
333    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
334      to make debugging easier.
335    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
336    o pkg/bulk_force:
337      - clean-up comments and parameters ;
338      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
339    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
340      generate new output for test-experiment: aim.5l_cs.thSI
341    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
342      testreport accordingly
343    
344    checkpoint58e_post
345    o SEAICE_CGRID adjoint done
346    o R_STAR adjoint implemented.
347      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
348      * need to sort out init. of h0facc, etc.
349    o Make pkg/profile fully independent of ecco,cost, etc. stuff
350      to be able to use it in pure forward.
351    
352    checkpoint58d_post
353    o upgrade simple test-experiment to tutorial example:
354     step.1: duplicate the experiment and (step.2) will remove the old copy.
355      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
356      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
357      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
358      tutorial_global_oce_biogeo    <- copy of dic_example
359      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
360      tutorial_plume_on_slope       <- copy of plume_on_slope
361      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
362      tutorial_global_oce_optim     <- empty for now (David ?)
363      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
364     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
365    o correct a sign problem in cost_scat.F
366    o obcs and ptracers: fix boundary conditions for advections schemes
367      with larger stencil
368    o thsice adjoint: start
369    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
370      completeness
371    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
372      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
373    o ptracers adjoint:
374      * avoid extensive recomputatations
375      * fix missing re-init. of gptr (missed by TAF)
376    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
377      me to turn off the excessive output to STDOUT that this package produces
378    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
379      and add those terms in Vector-Invariant formulation.
380    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
381      if the control period (xx_hfluxperiod etc) is 0
382    o in profiles pkg, clean routines and fix details
383    o in ecco pkg, reading ssh data:
384      fix problem in case the model does not start at iter0=0
385    o fix mnc-pickup/restart for ptracers
386    o new package prifiles:
387      code to compute profile-based cost by Gael Forget
388      (modifs in ecco, ctrl, autodiff)
389    o Benign bug fix in initialization (spotted by M. Mazloff) of
390      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
391    
392    checkpoint58c_post
393    o adjoint: finish NLFS adjoint and provide reference output in
394      verification/global_ocean.90x40x15/results_ad_nlfs
395    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
396      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
397      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
398      with SEAICE_CGRID defined.
399    o move calendarDumps from "data" to "data.cal" and clean-up the code
400      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
401    o add useEXF & useCAL flags (for now, set in hard-coded way)
402    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
403      (were missing in NH mode, and wrong in quasihydrostatic mode).
404      waiting for Chris updated version of calc_gw to add those CALLs.
405    o fix bug in quasihydrostatic S/R ;
406      add a test for this option: global_ocean.90x40x15.qshyd
407    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
408      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
409    o add on/off flag useOffLine for package OFFLINE
410    o seaice:
411      - modify advection so that it works also on the C-grid
412      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
413        problem in multi-tile runs with C-grid
414      - add flags for clipping ice velocities and/or masking solver forcing
415      - fix drag (ocean on ice) formulation and a bug that caused noise in the
416        C-grid solver
417      - added a few comments to seaice_diffusion.F
418      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
419        are now exclusive)
420      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
421        required re-ordering the code a little:
422       + make DAIRN global variable (defined in SEAICE)
423       + move computation of the viscosities eta and zeta into a new separate
424         routine (because I need to recompute them in seaice_ocean_stress.F)
425    
426    checkpoint58b_post
427    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
428      update output.txt of exp. aim.5l_cs.thSI
429    o various mnc cleanups and improvements:
430      + shrink lookup tables by factor of ~4
431      + better error reporting when running out of lookup space
432      + able to handle longer path/file names (up to 500 chars)
433    o adjoint:
434      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
435      - TBD: "hidden" mom_vecinv recomp. in dynamics
436    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
437     (allow to differentiate between forcing components using new integer flags:
438      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
439     and add new flag to put Dissipation tendency out of Adams-Bashforth.
440    o ecco
441      - enable trend removal from SSH anomaly obs.
442    o adjoint
443      - a fix for PmEpR when #undef EXACT_CONSERV
444      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
445      - try to fix "hidden" recomp. in forward_step for NLFS
446        (NLFS seems broken sometimes after I checked it in)
447    o seaice:
448     - add c-grid version of the dynamic solver:
449       + three new routines that are the c-grid substitute lsr, dynsolver
450         and ostres
451       + put a few fields that were local to dynsolver into global common
452         blocks, so that I can move the computation of stresses etc into
453         seaice_lsr (saves coding but may break the adjoint).
454     - replace more hardwired parameters by runtime parameters
455     - add ice masks that mask the rhs of the implicit solvers where there
456       is no ice (commented out in seaice_dynsolver, because i am not sure
457       if this works properly), eventually this should replace the clipping
458       of ice velocities in seaice_dynsolver to +/-40cm/s.
459    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
460      include it only where its needed
461    o move balancing of fluxes before the call of external_forcing_surf
462    o seaice:
463      - correct units of turning angles (now they are really in degrees)
464      - move computation of GWATX/Y out of main routine into dynsolver
465      - initialize GWATX/Y in seaice_init
466    o Apply mask on Fresh-Water flux (needed for SSH forcing).
467      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
468    o seaice: add runtime flags for turning angles (default to zero)
469    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
470      and trend from exf forcing and ctrl control adjustments
471    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
472      (since checkpoint57x_post)
473    o change the default rotation period to 86164.s = the Earth rotation
474    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
475      and based on a reference stratification. Tested within hs94.cs-32x32x5.
476    o seaice advection: add code for choosing between the default (2nd order
477      central differences) and multiDim advection schemes provided by
478      pkg/generic_advdiff
479    o seaice:
480      - removed all references to SEAICE_GRID.h fields from
481        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
482        (cubed-sphere configuration will change a little)
483      - grid computations in seaice_init are obsolete now.
484      - cleaned up code a little so that is easier to read (hopefully).
485      - added new (better?) discretizations of default advection and diffusion
486        (turn on with SEAICEuseFluxForm)
487      - replace 1 in 3d global fields by kSurface in growth.F
488      
489    checkpoint58a_post
490    o seaice:
491      - bug fix in advect.F
492    o shelfice:
493      - separate shelfice load anomaly from pload (breaks with time
494        dependent forcing), => introduce constant field shelficeLoadAnomaly.
495        Its default is 0., but it may be computed more cleverly from (unknown)
496        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
497        done offline. A good approximation of the pressure load anomaly is
498        necessary to avoid large initial adjustment processes underneath
499        deep-reaching shelfice.
500      - small fix in ISOMIP shelfice_thermodynamics
501      - add more sophisticated thermodynamics of Hellmer (1989), this is
502        now the default
503      - give a few constants more intuitive names
504    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
505      if bulk formulae are used in long integration (especially EmPmR). Turn
506      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
507      if balancePrintMean, the imbalance that is substracted is printed to
508      STDOUT.
509    o fix bug (typo) in obcs_apply_eta.F
510    o add a new package shelfice which enables us to model the circulation
511      underneath shelf-ice with draughts of hundreds of meters.
512     - works
513     - to do: + include improved thermodynamics
514              + check whether kSurfC (from model/inc/SURFACE.h) can be used
515                instead of new field kTopC
516              + can we use topoFile, Ro_surf and existing code in ini_depth.F
517                instead of new field R_shelfIce and new code in ini_depth.F
518                and ini_mask_etc.F?
519              + adjust vertical mixing schemes?
520    o seaice pkg:
521     - add a cpp-flag to include a simple formula for a salinity dependent
522       freezing point of sea water at the surface
523     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
524       meridional stresses are now different (and hopefully correct)
525    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
526       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
527       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
528    o pkg/diagnostics: add options and parameters for regional-statistics
529       diagnostics ; define regions by reading a region-mask from a file
530       (might add other options later)
531    o pkg/bulk_force:
532     - add option and parameters to use AIM surface-flux formulae.
533     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
534       others forcing fields (defined in PARM05, parameter file "data") are loaded
535       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
536     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
537     - use the right EXCH call for uwind,vwind (to work on CS-grid).
538     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
539       and parameters (note: calcWindStress replaces .NOT.readwindstress).
540     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
541    
542    checkpoint58
543    o add "--embed-source" option to genmake2 which, when the supporting
544      tools can be compiled (as determined by genmake2) will turn on the
545      embed_files package which then embeds the entire MITgcm source code
546      (*.[fFhc] + Makefile) used for the build within the executable
547      - requested by CNH but off by default
548      - adds a paltry <9MB to the mitgcmuv executable in most cases
549      - only writes the output when useEMBEDSRC in eedata is true
550    o clean up 3-dim. relaxation codes:
551      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
552      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
553      * Thanks to Tom Haine for testing!
554    
555    checkpoint57z_post
556    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
557      affects output (@ truncation level) of exp. plume_on_slope ; updated.
558    o fix the pickup behavior for obcs in combination with ptracers
559    o fix a bug in ptracers_external_fields_load
560    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
561      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
562    o transfered surface NH pressure to eta field (if exactConserv).
563    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
564         and update lab_sea output.txt file.
565    o completing 3-dim. relaxation code: additional term
566         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
567      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
568      * At compile time, in "EXF_OPTIONS.h" set
569          #define  ALLOW_CLIMTEMP_RELAXATION
570          #define  ALLOW_CLIMSALT_RELAXATION
571      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
572          tauThetaClimRelax3Dim = 15552000.0,
573          tauSaltClimRelax3Dim  = 15552000.0,
574      * 3 cases:
575          1) Use a constant-in-time 3-dim. field
576          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
577          3) Real-time relax. to time-evolving prescribed field
578    o Adding Laplacian-type smoothness constraint on
579      initial and boundary (forcing) controls (ic, bc)
580      * enable at compile-time via
581        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
582      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
583      * Absolute scale somewhat unclear so far
584      * no area weighting was included since no other cost term does so far
585    
586    checkpoint57y_post
587    First step for a NLFS adjoint
588    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
589    o new init. routines for calc_r_star, calc_surf_dr
590    o still need to deal with ini_masks_etc
591    o testreport seemed happy
592    checkpoint57y_pre
593    
594    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
595    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
596    o add new offset feature to offline pkg (plus minor cleanup)
597    o cfc fixes for final year of integration
598    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
599      be in GCHEM_OPTIONS).
600    
601    checkpoint57x_post
602    o fix testreport Pb in multiple test experiment.
603    o cleanup our namelist syntax in verification:
604      - make it more F95 standards compliant (some work still needed)
605      - allows the vast majority of our tests to work with gfortran
606    o Non-Hydrostatic:
607     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
608     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
609    o Allow to apply AB on T,S rather than on AB(gT,gS):
610     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
611     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
612       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
613     - need a "clever" read_pickup to restart from the other AB formulation
614    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
615    o remove some unused variables (reduces number of compiler warnings)
616    o adjoint
617      * Disable useVariableViscosity for adjoint for time being
618        (there are a number of extensive recomputations)
619      * Initialize certain variables needed for adjoint
620    
621    checkpoint57w_post
622    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
623                 fix the singleCpuIO RS version of MDSWRITEFIELD
624       and add a WARNING if using globalFiles=T with multi-processors.
625    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
626      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
627    o tracer advection scheme:
628      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
629       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
630       was not very convenient).
631      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
632       (further tests needed for the implicit DST & Flux-Limiter schemes).
633    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
634      and sRef for convenience, handy, when you want to initialize
635      ptracers in a large domain with a constant non-zero value. Also,
636      untangle ptracers_init.F a little.
637    
638    checkpoint57v_post
639    o change dome exp. to use variable viscosity in side-drag terms.
640    o remove all the files from the cfc_offline test since they are now
641      incorporated into tutorial_cfc_offline which has been producing
642      identical results for a few days of testing
643    o add new parameter: sideDragFactor to enable half-slip-side BC
644      and change side-drag S/R to use viscosity from mom_calc_visc
645      (can switch back by setting sideDragFactor=0.); affects results at
646      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
647       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
648    o vorticity & strain are now computed without masking, to account for
649      no-slip-side BC in variable viscosity calculation ; mask is applied
650      anyway later on, before computing advection/coriolis terms.
651    o modify exp4 to test new obcs support for reading from external files
652      and for passive tracers
653    o fix behavior of ptracers_monitor when monitor output is written to a
654      netcdf-file; still not independent of monitor.F (writes in the same
655      file).
656    o change default value of tRef (put a uniform, meaningful value for ocean
657      & atmos) and initialize sRef (was missing, as Martin mentioned).
658    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
659      to be proportional to enstrophy dissipation length.  Thus,
660       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
661      This is now consistent with Smagorinsky and with the manual.
662    
663    checkpoint57u_post
664    o OBCS and PTRACERS: add open boundary support for passive tracers
665      - either use homogenous (pseudo) v.Neumann conditions or prescribe
666        OB-values from file; this is not different from the way theta and salinity
667        are treated
668      - however, Orlanski-radiation conditions are not supported, and the model
669        will stop if you use pTracers and Orlanski at the same time.
670      - beefed up the rountine obcs_external_fields_load: now only those open
671        boundary values are overwritten with values from files for which there
672        are really files, otherwise the OB-fields remain untouched. This makes
673        it possible to use different OBs at different ends of the domain (as
674        with EXF)
675    o reduce number of exch calls in shap_filt (s2).
676    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
677      truncation level) 4/5 MLAdjust test results (11&12 digits match).
678    
679    checkpoint57t_post
680    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
681    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
682      same truncation, independent of the face number: affects affects several
683      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
684    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
685      note that biharmonic viscosity + no-slip was not tested in any experiment.
686    o fix bug in non-linear free-surf side-drag ; generate new output for
687      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
688    o make mnc honor the writeBinaryPrec flag for most kinds of output
689    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
690    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
691      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
692    o add brackets in multi-terms sum to get same truncation, independent of
693      the face number (manage to get exactly same value of gU,gV at the cs-edge)
694      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
695    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
696      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
697      a maximum grid-scale Reynolds number.  Also, changes all length calculations
698      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
699      Suggested values of viscosity parameters found in mom_calc_visc.
700      Many new viscosity diagnostics available.
701    
702    checkpoint57s_post
703    o Add clearing-house for viscosity calculations, mom_calc_visc and
704      correct numerous bugs in LeithD and Smagorinsky discretizations.  
705      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
706      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
707      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
708      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
709      The Strain-Tension form is now called with useStrainTensonVisc=.true.
710      ViscAhStrain and viscAhTension are now retired.
711    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
712    o In response to JMC's bug report, genmake2 now ignores any soft-links
713      that it finds in the *current* directory when searching for files.
714      Soft-links found in any other source directories will still work as
715      they did before.
716    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
717      a C routine to unlimit the stack size
718    o mnc-ify pkg/aim snapshot vars
719    o mnc-ify pkg/land as requested by Daniel
720    o various changes to mnc including:
721      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
722      - output can now be grouped so that all files within a group
723          change the ITER portion of their names in lock-step together
724      - can now read ("global") PER-FACE (in addition to PER-TILE) files
725          and works with both EXCH1 and EXCH2 (but needs more testing)
726      - writing works for all verification test cases w/ g77 on Linux
727    
728    checkpoint57r_post
729    o make MNC variable initialization happen earlier
730    o add diagnostics for (almost) each term of the momentum Eq.
731    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
732    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
733    o remove MINIMAL_TAVE_OUTPUT option ;
734      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
735    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
736      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
737    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
738    o add time-dependent SST, SSS control
739    o cost terms in ecco/ modularized (new cost_generic.F)
740    o cost_averages routines are modularized (new cost_averagesgeneric.F)
741    o new infrastructure for seaice model vs. obs misfits in seaice/
742      * driver from the_main_loop.F is seaice_cost_driver.F
743      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
744      * gradient check in Exp. 6a of natl_box_adjoint/
745    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
746      (see README file)
747    
748    checkpoint57q_post
749    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
750    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
751      - bug was reported by Jean-Michel and Ian Fenty
752    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
753      update exp. cpl_aim+ocn output.
754    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
755      Needed for high-res. runs with large global files
756      to be able to limit tapelev size
757    o Changed some tests for adjoint:
758      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
759      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
760      * global_ocean.90x40x15/ back to default 3-level checkpointing
761    o Modifications to enable scripted COMMON to MODULE conversion
762      * verification/OpenAD/code/ has necessary scripts and description;
763      * converts, compiles and runs successfully;
764    
765    checkpoint57p_post
766    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
767    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
768      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
769    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
770    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
771      (was already the case for dissipation with mom_vecinv,
772       and also the case for grad.PhiHyd when staggered-timeStep)
773      This will allow to put dissipation out-off the AB time-stepping.
774     Unfortunately, affects truncation error. Update output of exp. that "fails"
775      (cg2d matching number) and leave the others for later: front_relax(10),
776      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
777      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
778    
779    checkpoint57o_post
780    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
781      (2) its ready to be documented during the 20050801 DocFest
782    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
783      for ideal_2D_oce and lab_sea on linux_ia32_g77
784    o set to #undef CTRL_SET_OLD_MAXCVARS_30
785      in global1x1_tot/code_seaice_adj to access indices 32, 33
786      (worth another tag)
787    
788    checkpoint57n_post
789    o adding precip control xx_precip 32
790    o adding swflux control xx_swflux 33
791    o Replacing 10 forcing penalty cost routines by 1 generic.
792    o Implementing partitioning in time-mean and variable adjustment
793      for atmos. state.
794    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
795  o in natl_box_adjoint:  o in natl_box_adjoint:
796    * updated: results_bulk/    * updated exp 1 to 10
797    * not yet updated: results/, results_seaice/      (but does not have time-mean vs. variable split results yet)
798    o updated global1x1/*_seaice_adj/
799      to incorporate latest changes
800    o enable useSingleCpuIO for mdsio vector routines
801      (applies in particular to tapelev I/O)
802    o removed inefficient K-loop in all active_file*control*.F
803    
804  checkpoint57m_post  checkpoint57m_post
805  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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