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revision 1.758 by jmc, Wed Dec 20 20:47:30 2006 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:  o fix multi-category seaice:
297   - change cpp flag SEAICE_MULTILEVEL to more meaningful name:   - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
298     SEAICE_MULTICATEGORY     SEAICE_MULTICATEGORY

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