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revision 1.589 by jmc, Thu Dec 8 22:25:07 2005 UTC revision 1.836 by gforget, Fri Jun 15 20:49:59 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 dependencies: pkg/profiles requires pkg/cal
8    o pkg/profiles:
9     - added option ALLOW_PROFILES_GENERICGRID
10         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
11         that interpolation information (grid points and coefficients) is provided
12         within the netcdf input files.
13         -> sample matlab scripts can be found in MITgcm_contrib/gael
14         that allow you to prepare netcdf input files.
15     - also modified: cleaner include statements, cleaner error print statements,
16       cleaner stops when error, and more tests of the netcdf input files consistency.
17    
18    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
19    o pkg/seaice:
20     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
21       requires a new routine: seaice_diagnostics_fill.F
22     - make sure that seaice does not move if not forced (pressure replacement
23       method, Hibler and Ip, 1995), changes results
24     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
25     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
26       It is turned off by default (=-1.), because it changes the results.
27     - make it possible to read AREA from a file, too.
28    
29    checkpoint59c
30    o add S/R and diagnostics for oceanic mixed-layer depth
31    o move GMRedi call after all vertical mixing schemes (including KPP)
32    o pkg/thsice:
33     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
34      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
35    o pkg/obcs:
36     - bug fix for balance code
37    o pkg/seaice:
38      - allow values of SEAICE_elasticParm > 1
39      - add new parameter SEAICE_evpTauRelax as an alternative
40        to SEAICE_elasticParm
41      - make lsr boundary conditions free slip (by default), changes result
42      - add code for no slip boundary conditions for lsr
43      - set minimum of zeta to zero (and not 4e8) (changes results)
44      - add a cap on AREA after advecting AREA if seaice_growth is not called
45    o change calculation of Visbeck K:
46      - no longer depend on tapering scheme; instead, compute slope (limited
47        by GM_maxSlope). this is equivalent to what was comuted before with
48        clipping or linear tappering.
49      - fix vertical averaging (wrong by 1/2 level)
50      - leave the old version (but will not be maintained) within
51        #ifdef OLD_VISBECK_CALC / #endif
52      - update output of exp. ideal_2D_oce
53    o change error catch in calc_r_star to improve vectorization
54    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
55      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
56    o adjoint:
57      Re-organized adjoint checkpointing according to Matt Mazloff
58      (but with modifs/completions/cleanups)
59      Storing is now bundled into large arrays to optimized I/O
60      (and second step in cleanup of the_main_loop)
61    
62    checkpoint59b
63    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
64      - export/import (between ocean & coupler) fields needed for ocean DIC.
65    o pkg/seaice:
66      - get rid of three more exchanges seaice_calc_viscosities (required
67        different loop boundaries in seaice_lsr and seaice_ocean_stress)
68      - bug fix in seaice_ocean_stress (update of lab_sea required)
69      - reduce loop boundaries to necessary minimum also in seaice_evp
70      - go back to the old way of computing deltaC/Z as the adjoint likes that
71        better
72    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
73      passive tracer to an Age Tracer) + update output.txt
74    o pkg/exf:
75      - implement A-grid / C-grid selection for wind-stress input files.
76      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
77      for now, in exf_bulk_largeyeager04.F only :
78      - change implementation for case where windspeed + 2. components wind-stress
79        are read-in. AND use rhoConstFresh to convert evap.
80    o pkg/seaice:
81      - use correct EXCH_UV for wind-forcing (on A-grid).
82      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
83        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
84    o pkg/exf:
85      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
86      EXF_INTERPOLATION:
87      - merge global_with_exf/code version of exf_interp_read.F
88        to the main code ;
89      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
90        reading the file ; Important: This options needs to be defined to recover
91        previous code.
92        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
93      - no longer loose real*8 precision along the way when using exf_iprec=64.
94    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
95      - change discretisation of evp-solver in order to avoid another exchange
96        (changes lab_sea) and clean up a little
97      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
98        help the adjoint (this also changes the results slightly)
99      - add a few "_d 0" where they had been missing in seaice_evp.F
100      - cleaning up: remove unused seaice_calc_rhs.F
101    o pkg/exf: some cleaning-up:
102      - change various "constants" into runtime parameters
103      - cleaned-up Large&Yeager04 routine which should eventually
104        replace exf_bulkformulae.F (changed names of S/R and CPP)
105        and merged various ALLOW_ATM_WIND options
106     only used with thsice pkg (in thsice_get_exf.F):
107      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
108        which are used when useStabilityFct_overIce=TRUE (= the default)
109      - change default values of ice & snow emissivity and scale downward LW
110        by ice & snow emissivity.
111    o pkg/thsice:
112     fix few little problems, in thsice_calc_thickn.F:
113      - growth vertically (and not laterally) if iceFrac == iceMaskMax
114      - melt only laterally if hIce < hThinIce (as the comments say)
115      and in thsice_extend.F:
116      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
117      - start to form ice as soon as the minimum ice-volume is reachable.
118     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
119      and cpl_aim+ocn
120    o pkg/kpp
121     - move computation of surface related input fields to KPP into a new
122       subroutine kpp_forcing_surf.F
123     - remove wrong (within bi,bj loops) EXCH calls.
124     - little cleaning (add argument myThid in last position, cvs header ...)
125     - for now, fix conservation problem by exchanging KPPviscAz (may not
126       be the best fix)
127    o pkg/seaice
128     - check for inconsistent evp parameter/cpp-flag combination
129     - remove leftover errIO flat for obsolete name list error handling
130    o OpenAD
131     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
132    
133    checkpoint59a
134    o pkg/seaice: some parameter clarifications and a little bit of clean up
135    o pkg/thsice: rename run-time parameters:
136       himin       -> hIceMin
137       himin0      -> hThinIce
138       hihig       -> hThickIce
139       i0          -> i0swFrac
140       transCoef   -> bMeltCoef
141       frac_energy -> fracMelting
142      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
143       with default values (for now) that do not change the results.
144      remove old version of thsice vars advection in pkg/seaice.
145    o in FFIELDS.h:
146      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
147      - make pLoad & sIceLoad always available (but still only used if
148         ATMOSPHERIC_LOADING is #define).
149    o pkg/kpp: replaced _KPP_RL with _RL
150    o bug fixes for vertical diffusivity computations when both KPP and
151        3D diffusivity arrays are used.
152    o pkg/seaice: fix bug in evp solver, while doing that
153      - change (improve?) discretization of stress computations for both
154        cgrid-lsr and evp solver
155      - add a new routine to compute strain rates
156      - the above changes lab_sea results
157      - add no slip conditions for evp solver (off by default), lsr-version
158        may follow
159      - fix exchange for shear at Z-points (does not change lab_sea)
160      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
161        (to force the user to pick a time step since there is not "safe" way
162        of choosing it)
163      - add principal stress diagnostics
164      - rearrange fields for evp a little to avoid having to call a: too many
165        exchanges and b: exchanges for stress trensor components which we do
166        not have.
167      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
168        of evp, complete rewrite for lsr case (latter is does not yet work
169        in all cases)
170    o pkg/kpp: add code to have mixing in shelf ice caverns
171      - add myThid to all kpp routines (long overdue)
172    
173    checkpoint59
174    o pkg/exf:
175      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
176        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
177      - move exf header files from lower_case.h to UPPER_CASE.h ;
178        add missing cvs Header & Name
179      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
180      - add namelist param. selectStressGridPosition, exf_monFreq
181      - retire many _CLIM routines, and remove data.exf_clim
182        + params moved to data.exf
183        + climsst, climsss now handled by exf_set_gen, i.e.
184          climss?period=0 refers to constant field,
185          climss?period=-12 to monthly forcing
186      - split up namelists in data.exf
187    o pkg/seaice:
188      - remove seaice_exch and seaice_exch_uv
189      - remove superfluous exchange of theta
190      - add myThid to seaice_budget_ocean/ice
191      - add new interface for atmospheric wind forcing (C-grid only)
192        + new routine
193        + two new field (taux, tauy for stress over ice)
194        + removed one global field (DAIRN) for C-grid case only
195    o pkg/thsise
196      - 2nd set of modifs for thsice adjoint in conjunction with exf
197    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
198    
199    checkpoint58y_post
200    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
201      vertical diffusivity, similar to that in MOM4; turned on using
202      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
203      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
204    o Added capability for 3D specification of background vertical diffusion
205      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
206      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
207      "data" file that contains the 3D vertical diffusivity coefficients.
208    o ice dynamics (pkg/seaice) with thsice thermodynamics:
209      - add code within pkg thsice to advect & diffuse sea-ice fields
210      similar to (and will replace) what has been added in  seaice_advdiff.F,
211      but: - conserving Mass, Heat & Salt.
212           - better when using non-linear advection scheme (not yet fully tested)
213           - can also be used in atmospheric set-up (for now, only the diffusion).
214    
215    checkpoint58x_post
216    o IO option for global-file compact format:
217      - add options when generating topology (utils/exch2/matlab-topology-generator)
218      - add I/O capability (pkg/mdsio).
219      - adapt utils/matlab/rdmds.m to read this format.
220      for now long-line format not yet supported by pkg/mdsio (& exch2).
221    o shelfice: add a few diagnostics
222    
223    checkpoint58w_post
224    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
225      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
226      (and replace horiVertRatio in NH code).
227      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
228                         and tutorial_plume_on_slope (sensitive to truncation)
229    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
230      directly to drive seaice model (C-grid only)
231    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
232     - reintroduce computation of wind from stress,
233     - compute tau (in exf_bulkformulae.F) from windstress averaged to
234       mass points to avoid tau = 0
235     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
236    o rdmnc.m: make it work with "global" files created with gluemnc
237    o rdmnc.m : some improvements in dealing with singleton dimension
238      (tested on all testreport mnc output files).
239    o genmake2: disable pkg/profiles if netcdf test fails.
240    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
241    o move call to cal_readparms up to make calendar parameters/variable available
242      to all packages
243    
244    checkpoint58v_post
245    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
246      useDynP_inEos_Zc tested.
247    o pkg/exf: changes to properly interpolate/mask/scale initial fields
248    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
249      and portions thereof.  See read_cs.txt for description and examples.
250    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
251      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
252      following the great-circle arc between those 2 points.
253    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
254      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
255    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
256     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
257     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
258     - still needs work (not working with some options ; efficiency to improve)
259       and serious testing.
260     - use this scheme for temperature & salinity in 2 advection test exp.:
261       advect_xy & advect_xz, respectively.
262    
263    checkpoint58u_post
264    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
265    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
266    o testreport: add option "-skipdir" to skip some test.
267    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
268      momentum calculation.
269    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
270    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
271      remove checkpoint.F and the_correction_step.F (no longer used);
272      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
273    o add option (linFSConserveTr) to correct for tracer source/sink due to
274      Linear Free surface
275    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
276    o pkg/thsice: fix reading mnc-pickups
277    
278    checkpoint58t_post
279    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
280    o pkg/mdsio:
281     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
282       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
283       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
284     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
285     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
286       either MDS_READ_FIELD or MDS_WRITE_FIELD )
287     - new S/R (to replace MDSWRITEMETA), which allows to write more
288       informations (variable names, time ...) to meta files.
289     - modify rdmds.m to give back the meta file content.
290    o pkg/diagnostics: change vertical interpolation to be safer, and more
291       flexible (define p-levels to interpolate to in data.diagnostics);
292      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
293       diagnostic pointer.
294    o pkg/seaice: more cleaning up of seaice_growth, added many comments
295    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
296    o fix multi-category seaice:
297     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
298       SEAICE_MULTICATEGORY
299     - fix short wave heat flux
300    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
301       and allow to use EVP solver. Change forward lab_sea: test both EVP
302       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
303    o Initial check-in of lab_sea adjoint
304      (very similar to natl_box_adjoint/code_seaice)
305      * used C-grid and EVP solver
306      * used KPP, GM/Redi
307      * uses inAdExact=.TRUE.
308      * gradient checks fail for both ADM and TLM
309        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
310        f.d. gradients actually seem more problematic than ADM, TLM gradients;
311        issue is related to forward mismatch between g77 an ifort
312    o pkg/seaice: overhaul of thermodynamics
313     - growth.F and groatb.F are replaced by new routine seaice_growth.F
314     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
315     - move a few global fields out of SEAICE.h into seaice_growth.F and
316       make them 2D (FICE/QNETO/ ...)
317     - remove FO (it is the same as QNETO)
318     - introduce a few local fields to avoid modifying external fields such
319       as atemp, etc.
320    
321    checkpoint58s_post
322    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
323      changed exf_set_gen.F so that
324        genperiod=0 means input file is one time-constant field and
325        genperiod=-12 means input file contains 12 monthly means
326    o CG2D: use pre-computed solver main-diagonal (stored in common block);
327      this affects truncation error ; generate new output file for exp. which
328      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
329        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
330        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
331        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
332        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
333        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
334    o start implementation of deep-atmosphere and anelastic formulation
335    o verification: remove 2nd copy of input files and use script "prepare_run"
336      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
337    o mom_common/vecinv/fluxform: fix a few initialisation isssues
338    o profiles: fix for multithreaded case
339    
340    o diagnostics: rename few diags:
341      s/'PRESSURE'/'RCENTER '/g
342      s/'TICE    '/'oceFreez'/g
343      s/'TAUX    '/'oceTAUX '/g
344      s/'TAUY    '/'oceTAUY '/g
345      s/'SWFLUX  '/'oceQsw  '/g
346      s/DIFx/DFxE/g
347      s/DIFy/DFyE/g
348      and add few ocean-forcing diagnostics:
349      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
350    o modifications to pkg/seaice/growth.F and budget.F, which change results of
351      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
352      as actual snow thickness.  It now refers everywhere to effective snow
353      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
354    
355    checkpoint58r_post
356    o modifications to pkg/seaice/growth.F, which change results of
357      lab_sea experiment: fixes pertain to melting snow over open water, to
358      masking EVAP under sea ice, and to using the correct AREA variable for
359      computations of EVAP, PRECIP, HSNOW, and GHEFF
360    o add ability to read bathy, salt, and theta using MNC (off by def)
361    o add flooding algorithm and advection of HSNOW for pkg/seaice;
362      both are turned off by default and do no change any results
363    o seaice advection with pkg/thsice: a step toward the use of non-linear
364      advection scheme, but #ifdef or commented out for now (requires more EXCH).
365    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
366      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
367      in natl_box (affects results @ truncation level: update output.txt)
368    o multi-threading and IO:
369      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
370      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
371        (needed to work with SingleCpuIO): tested in all verif. exp.
372    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
373      affects the results (but none of the verification test uses this scheme).
374    o Adding some pkg/diagnostics capability to pkg/seaice
375      (will certainly be subject to changes)
376    o ctrl: adding new control variables:
377      lwflux, lwdown, evap, snowprecip, apressure, runoff
378    
379    checkpoint58q_post
380    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
381      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
382      high_res_cube configuration by 4% on Columbia.
383    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
384      add (in global_with_exf/code) a version of EXF_INTERP_READ without
385      dynamical allocation (seems to work in multi-threaded).
386    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
387      single CPU io) so that TAF does not have to see EESUPPORT.h
388    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
389    
390    checkpoint58p_post
391    o obcs: stop if obcs is used with useCDscheme = .true.
392    o shelfice:
393     - fix a sign error so that no slip at shelfice interface works
394     - remove stop for combination non-hydrostatic code and shelfice. That does
395       not mean, that the results are correct, but at least they are numerically
396       stable
397    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
398    o added adjoint exch routined for all exch*3d* routines
399      and updated flow directives
400    
401    checkpoint58o_post
402    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
403      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
404    o change controling S/R for writing pickup file (new S/R do_write_pickup)
405      and clean-up reading/writing of pickup files.
406    o fix local version of read/write pickup (NH part) in rotating_tank/code
407    o simplify EXCH interface:
408     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
409     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
410    o added the regrid package
411    o shelfice:
412     - add a simple boundary layer scheme to reduce noise
413     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
414    
415    checkpoint58n_post
416    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
417       local variable (not in common block).
418    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
419      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
420      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
421        to work with SingleCpuIO.
422    o add "_d 0" to real constant of pkg/cfc subroutines ;
423       update exp. cfc_exemple & tutorial_cfc_offline output files.
424    o multi-threading and IO:
425      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
426        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
427      - barrier before and after reading.
428      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
429      - avoid using MDS_WRITELOCAL for LAND pkg output.
430      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
431        common-block variables ; Allows multi-threading with master-thread IO.
432    o change default MAX_NO_THREADS from 32 to 4 ;
433      and stop cleanly when MAX_NO_THREADS is too small.
434    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
435    
436    checkpoint58m_post
437    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
438       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
439    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
440       keep global_ocean.90x40x15 (for AD testing) with former secondary test
441       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
442    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
443        add MITgcm_tutorials (= code + all the tutorials)
444    o ecco, option to compute cost for total ssh (mean+anom)
445    o consistent with addition of ptracer and ssh in pkg/profiles
446    o profiles: adding ptracer and ssh
447    o testreport: change multi-test output-file name
448      (from output.txt.{name} to output.{name}.txt)
449    o profiles: now ok for mutli-tiles case
450    o seaice: add 4 parameters for different advection schemes for area,
451      (effective) seaice thickness, enthalphy, and snow height. Their default
452      is the standard parameter SEAICEadvScheme
453    o calc_gw:
454     - add cosFacU in zonal viscous flux (harmonic.visc.).
455     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
456       of tutorial_plume_on_slope.
457    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
458    o calc_gw: true flux-form, account for horizontal grid spacing.
459      update rotating_tank results, but not plume_on_slope (affected at
460      truncation level, 11 digits).
461    
462    checkpoint58l_post
463    o calc_gw:
464     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
465     - remove side-drag for now (need to fix it); update plume_on_slope results.
466     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
467    o commit code to make SST/SSS weights spatially variable
468      (based on either variable in-situ or variable initial T/S weights)
469    o pkg/ecco:
470      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
471        now based on horizontally varying weights wthetaLev, wsaltLev
472      * cost_averagesflags now returns year indices in addition to day, month
473      * sflux balance is performed on annual basis
474        (sflxumm, sfluxmm2, bal_sfluxmm)
475      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
476        including separate counting and multipliers
477    o pkg/rbcs
478      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
479    
480    checkpoint58k_post
481    o testreport:
482     - always build in dir. "build" (if not there, mkdir build instead of building
483       & running in input)
484     - run in dir run (if it exists), in build otherwise.
485     - call prepare_run (if input/prepare_run exists)
486     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
487    o pkg/exf modifications to interpolation and rotation routines for more
488       reasonable treatment of North Pole singularity: for tracers North Pole
489       value is set to northernmost zonal-mean value, for zonal velocity it is
490       set to zero, and for meridional velocity it is set to northernmost value.
491    o pkg/exf/exf_check_range.F
492     - add tile index to diagnostics and move stop statement to the very
493       end of the routine.
494    o pkg/diagnostics: (diagnostics_main_init.F)
495      define title of isomorphic variables according to the current config.
496    o pkg/thsice with pkg/seaice dynamics:
497    - fix domain of computation (interior only, required for exf) and do exchanges
498    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
499    o towards a standard way of dealing with multi-threading in MONITOR
500      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
501    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
502       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
503    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
504    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
505    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
506       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
507    o tracer advection:
508     - clean-up and simplify calc_common_factors.F
509     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
510       advection subroutine (but still not used within DST advection S/R)
511    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
512    
513    checkpoint58j_post
514    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
515      from file (collects calls previously in FORWARD_STEP)
516    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
517    o adjoint store dir. adjusted accordingly
518    o genmake2
519      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
520    
521    checkpoint58i_post
522    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
523      on wind stress (SEAICEstressFactor defaults to 1.)
524    o Total number of Timers is finite (<=40): comment out 2 non-essential one
525      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
526    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
527      on CS-grid: no longer loosing mass.
528    o exf & curvilinear-grid: no longer modify longitude xC & xG.
529    o pkg/ggl90: fix sloppy output and fix a bug
530    o pkg/seaice: added SEAICEuseEVPpickup parameter
531      - Set to false in order to start EVP solver with
532        non-EVP pickup files when using SEAICEuseEVP
533      - fix sign error in diffusion in seaice_calc_rhs
534    
535    checkpoint58h_post
536    * Modifications for bottom topography control
537      o replace hFacC by _hFacC at various places
538      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
539      o add non-self-adjoint cg2d_nsa
540      o update autodiff support routines
541      o re-initialise hfac after ctrl_depth_ini
542      o works for 5x5 box, doesnt work for global_ocean.90x40x15
543    * Adding verification for 5x5 box (4-layer) bottom topography control
544    
545    checkpoint58g_post
546    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
547       used for mean seasonal cycle, mean diurnal cycle); add an example
548       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
549    o pkg/ggl90:
550      - add parameter (minimum surface kinetic energy)
551      - fix bug (avoiding division by zero)
552    o couple pkg/thsice to pkg/seaice:
553      - modify advection in seaice to accomodate new scalar fields to be advected
554      - only muliDimAdection scheme work with seaice/thsice
555      - mapping of thsice-variables to seaice-variables, back and forth
556      - does not break the verification experiments, but does not give the
557        desired results either
558    o pkg/seaice
559      - make (default) second order advection a bit less confusing?
560    
561    checkpoint58f_post
562    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
563      to pkg/seaice):
564      - new routines thsice_map_exf and thsice_get_exf provide the interface
565      - add an additional formal parameter to thsice_solve4temp
566    o pkg/exf:
567      - add new fields wspeed, snowprecip (to be able to couple to thsice)
568      - correct Stefan-Boltzmann constant
569      - new parameter for longwave surface emittance
570      - separate some stuff from exf_bulkformulae into new routines  
571        exf_radiation, exf_wind
572      - add new parameters and constants: longwave emissivity for ocean, ice
573        and snow, evaporation parameters over ice
574      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
575        either wind from stress or stress from wind
576    o pkg/thSIce:
577    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
578    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
579       and THSICE_CALC_THICKN
580    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
581    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
582      to make debugging easier.
583    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
584    o pkg/bulk_force:
585      - clean-up comments and parameters ;
586      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
587    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
588      generate new output for test-experiment: aim.5l_cs.thSI
589    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
590      testreport accordingly
591    
592    checkpoint58e_post
593    o SEAICE_CGRID adjoint done
594    o R_STAR adjoint implemented.
595      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
596      * need to sort out init. of h0facc, etc.
597    o Make pkg/profile fully independent of ecco,cost, etc. stuff
598      to be able to use it in pure forward.
599    
600    checkpoint58d_post
601    o upgrade simple test-experiment to tutorial example:
602     step.1: duplicate the experiment and (step.2) will remove the old copy.
603      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
604      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
605      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
606      tutorial_global_oce_biogeo    <- copy of dic_example
607      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
608      tutorial_plume_on_slope       <- copy of plume_on_slope
609      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
610      tutorial_global_oce_optim     <- empty for now (David ?)
611      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
612     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
613    o correct a sign problem in cost_scat.F
614    o obcs and ptracers: fix boundary conditions for advections schemes
615      with larger stencil
616    o thsice adjoint: start
617    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
618      completeness
619    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
620      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
621    o ptracers adjoint:
622      * avoid extensive recomputatations
623      * fix missing re-init. of gptr (missed by TAF)
624    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
625      me to turn off the excessive output to STDOUT that this package produces
626    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
627      and add those terms in Vector-Invariant formulation.
628    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
629      if the control period (xx_hfluxperiod etc) is 0
630    o in profiles pkg, clean routines and fix details
631    o in ecco pkg, reading ssh data:
632      fix problem in case the model does not start at iter0=0
633    o fix mnc-pickup/restart for ptracers
634    o new package prifiles:
635      code to compute profile-based cost by Gael Forget
636      (modifs in ecco, ctrl, autodiff)
637    o Benign bug fix in initialization (spotted by M. Mazloff) of
638      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
639    
640    checkpoint58c_post
641    o adjoint: finish NLFS adjoint and provide reference output in
642      verification/global_ocean.90x40x15/results_ad_nlfs
643    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
644      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
645      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
646      with SEAICE_CGRID defined.
647    o move calendarDumps from "data" to "data.cal" and clean-up the code
648      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
649    o add useEXF & useCAL flags (for now, set in hard-coded way)
650    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
651      (were missing in NH mode, and wrong in quasihydrostatic mode).
652      waiting for Chris updated version of calc_gw to add those CALLs.
653    o fix bug in quasihydrostatic S/R ;
654      add a test for this option: global_ocean.90x40x15.qshyd
655    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
656      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
657    o add on/off flag useOffLine for package OFFLINE
658    o seaice:
659      - modify advection so that it works also on the C-grid
660      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
661        problem in multi-tile runs with C-grid
662      - add flags for clipping ice velocities and/or masking solver forcing
663      - fix drag (ocean on ice) formulation and a bug that caused noise in the
664        C-grid solver
665      - added a few comments to seaice_diffusion.F
666      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
667        are now exclusive)
668      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
669        required re-ordering the code a little:
670       + make DAIRN global variable (defined in SEAICE)
671       + move computation of the viscosities eta and zeta into a new separate
672         routine (because I need to recompute them in seaice_ocean_stress.F)
673    
674    checkpoint58b_post
675    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
676      update output.txt of exp. aim.5l_cs.thSI
677    o various mnc cleanups and improvements:
678      + shrink lookup tables by factor of ~4
679      + better error reporting when running out of lookup space
680      + able to handle longer path/file names (up to 500 chars)
681    o adjoint:
682      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
683      - TBD: "hidden" mom_vecinv recomp. in dynamics
684    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
685     (allow to differentiate between forcing components using new integer flags:
686      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
687     and add new flag to put Dissipation tendency out of Adams-Bashforth.
688    o ecco
689      - enable trend removal from SSH anomaly obs.
690    o adjoint
691      - a fix for PmEpR when #undef EXACT_CONSERV
692      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
693      - try to fix "hidden" recomp. in forward_step for NLFS
694        (NLFS seems broken sometimes after I checked it in)
695    o seaice:
696     - add c-grid version of the dynamic solver:
697       + three new routines that are the c-grid substitute lsr, dynsolver
698         and ostres
699       + put a few fields that were local to dynsolver into global common
700         blocks, so that I can move the computation of stresses etc into
701         seaice_lsr (saves coding but may break the adjoint).
702     - replace more hardwired parameters by runtime parameters
703     - add ice masks that mask the rhs of the implicit solvers where there
704       is no ice (commented out in seaice_dynsolver, because i am not sure
705       if this works properly), eventually this should replace the clipping
706       of ice velocities in seaice_dynsolver to +/-40cm/s.
707    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
708      include it only where its needed
709    o move balancing of fluxes before the call of external_forcing_surf
710    o seaice:
711      - correct units of turning angles (now they are really in degrees)
712      - move computation of GWATX/Y out of main routine into dynsolver
713      - initialize GWATX/Y in seaice_init
714    o Apply mask on Fresh-Water flux (needed for SSH forcing).
715      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
716    o seaice: add runtime flags for turning angles (default to zero)
717    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
718      and trend from exf forcing and ctrl control adjustments
719    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
720      (since checkpoint57x_post)
721    o change the default rotation period to 86164.s = the Earth rotation
722    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
723      and based on a reference stratification. Tested within hs94.cs-32x32x5.
724    o seaice advection: add code for choosing between the default (2nd order
725      central differences) and multiDim advection schemes provided by
726      pkg/generic_advdiff
727    o seaice:
728      - removed all references to SEAICE_GRID.h fields from
729        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
730        (cubed-sphere configuration will change a little)
731      - grid computations in seaice_init are obsolete now.
732      - cleaned up code a little so that is easier to read (hopefully).
733      - added new (better?) discretizations of default advection and diffusion
734        (turn on with SEAICEuseFluxForm)
735      - replace 1 in 3d global fields by kSurface in growth.F
736      
737    checkpoint58a_post
738    o seaice:
739      - bug fix in advect.F
740    o shelfice:
741      - separate shelfice load anomaly from pload (breaks with time
742        dependent forcing), => introduce constant field shelficeLoadAnomaly.
743        Its default is 0., but it may be computed more cleverly from (unknown)
744        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
745        done offline. A good approximation of the pressure load anomaly is
746        necessary to avoid large initial adjustment processes underneath
747        deep-reaching shelfice.
748      - small fix in ISOMIP shelfice_thermodynamics
749      - add more sophisticated thermodynamics of Hellmer (1989), this is
750        now the default
751      - give a few constants more intuitive names
752    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
753      if bulk formulae are used in long integration (especially EmPmR). Turn
754      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
755      if balancePrintMean, the imbalance that is substracted is printed to
756      STDOUT.
757    o fix bug (typo) in obcs_apply_eta.F
758    o add a new package shelfice which enables us to model the circulation
759      underneath shelf-ice with draughts of hundreds of meters.
760     - works
761     - to do: + include improved thermodynamics
762              + check whether kSurfC (from model/inc/SURFACE.h) can be used
763                instead of new field kTopC
764              + can we use topoFile, Ro_surf and existing code in ini_depth.F
765                instead of new field R_shelfIce and new code in ini_depth.F
766                and ini_mask_etc.F?
767              + adjust vertical mixing schemes?
768    o seaice pkg:
769     - add a cpp-flag to include a simple formula for a salinity dependent
770       freezing point of sea water at the surface
771     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
772       meridional stresses are now different (and hopefully correct)
773    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
774       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
775       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
776    o pkg/diagnostics: add options and parameters for regional-statistics
777       diagnostics ; define regions by reading a region-mask from a file
778       (might add other options later)
779    o pkg/bulk_force:
780     - add option and parameters to use AIM surface-flux formulae.
781     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
782       others forcing fields (defined in PARM05, parameter file "data") are loaded
783       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
784     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
785     - use the right EXCH call for uwind,vwind (to work on CS-grid).
786     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
787       and parameters (note: calcWindStress replaces .NOT.readwindstress).
788     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
789    
790    checkpoint58
791    o add "--embed-source" option to genmake2 which, when the supporting
792      tools can be compiled (as determined by genmake2) will turn on the
793      embed_files package which then embeds the entire MITgcm source code
794      (*.[fFhc] + Makefile) used for the build within the executable
795      - requested by CNH but off by default
796      - adds a paltry <9MB to the mitgcmuv executable in most cases
797      - only writes the output when useEMBEDSRC in eedata is true
798    o clean up 3-dim. relaxation codes:
799      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
800      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
801      * Thanks to Tom Haine for testing!
802    
803    checkpoint57z_post
804    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
805      affects output (@ truncation level) of exp. plume_on_slope ; updated.
806    o fix the pickup behavior for obcs in combination with ptracers
807    o fix a bug in ptracers_external_fields_load
808    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
809      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
810    o transfered surface NH pressure to eta field (if exactConserv).
811  o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)  o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
812       and update lab_sea output.txt file.       and update lab_sea output.txt file.
813    o completing 3-dim. relaxation code: additional term
814         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
815      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
816      * At compile time, in "EXF_OPTIONS.h" set
817          #define  ALLOW_CLIMTEMP_RELAXATION
818          #define  ALLOW_CLIMSALT_RELAXATION
819      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
820          tauThetaClimRelax3Dim = 15552000.0,
821          tauSaltClimRelax3Dim  = 15552000.0,
822      * 3 cases:
823          1) Use a constant-in-time 3-dim. field
824          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
825          3) Real-time relax. to time-evolving prescribed field
826    o Adding Laplacian-type smoothness constraint on
827      initial and boundary (forcing) controls (ic, bc)
828      * enable at compile-time via
829        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
830      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
831      * Absolute scale somewhat unclear so far
832      * no area weighting was included since no other cost term does so far
833    
834  checkpoint57y_post  checkpoint57y_post
835  First step for a NLFS adjoint  First step for a NLFS adjoint

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