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revision 1.760 by jmc, Sun Dec 24 22:30:57 2006 UTC revision 1.834 by jmc, Tue Jun 12 16:04:45 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 additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
8    o pkg/seaice:
9     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
10       requires a new routine: seaice_diagnostics_fill.F
11     - make sure that seaice does not move if not forced (pressure replacement
12       method, Hibler and Ip, 1995), changes results
13     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
14     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
15       It is turned off by default (=-1.), because it changes the results.
16     - make it possible to read AREA from a file, too.
17    
18    checkpoint59c
19    o add S/R and diagnostics for oceanic mixed-layer depth
20    o move GMRedi call after all vertical mixing schemes (including KPP)
21    o pkg/thsice:
22     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
23      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
24    o pkg/obcs:
25     - bug fix for balance code
26    o pkg/seaice:
27      - allow values of SEAICE_elasticParm > 1
28      - add new parameter SEAICE_evpTauRelax as an alternative
29        to SEAICE_elasticParm
30      - make lsr boundary conditions free slip (by default), changes result
31      - add code for no slip boundary conditions for lsr
32      - set minimum of zeta to zero (and not 4e8) (changes results)
33      - add a cap on AREA after advecting AREA if seaice_growth is not called
34    o change calculation of Visbeck K:
35      - no longer depend on tapering scheme; instead, compute slope (limited
36        by GM_maxSlope). this is equivalent to what was comuted before with
37        clipping or linear tappering.
38      - fix vertical averaging (wrong by 1/2 level)
39      - leave the old version (but will not be maintained) within
40        #ifdef OLD_VISBECK_CALC / #endif
41      - update output of exp. ideal_2D_oce
42    o change error catch in calc_r_star to improve vectorization
43    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
44      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
45    o adjoint:
46      Re-organized adjoint checkpointing according to Matt Mazloff
47      (but with modifs/completions/cleanups)
48      Storing is now bundled into large arrays to optimized I/O
49      (and second step in cleanup of the_main_loop)
50    
51    checkpoint59b
52    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
53      - export/import (between ocean & coupler) fields needed for ocean DIC.
54    o pkg/seaice:
55      - get rid of three more exchanges seaice_calc_viscosities (required
56        different loop boundaries in seaice_lsr and seaice_ocean_stress)
57      - bug fix in seaice_ocean_stress (update of lab_sea required)
58      - reduce loop boundaries to necessary minimum also in seaice_evp
59      - go back to the old way of computing deltaC/Z as the adjoint likes that
60        better
61    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
62      passive tracer to an Age Tracer) + update output.txt
63    o pkg/exf:
64      - implement A-grid / C-grid selection for wind-stress input files.
65      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
66      for now, in exf_bulk_largeyeager04.F only :
67      - change implementation for case where windspeed + 2. components wind-stress
68        are read-in. AND use rhoConstFresh to convert evap.
69    o pkg/seaice:
70      - use correct EXCH_UV for wind-forcing (on A-grid).
71      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
72        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
73    o pkg/exf:
74      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
75      EXF_INTERPOLATION:
76      - merge global_with_exf/code version of exf_interp_read.F
77        to the main code ;
78      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
79        reading the file ; Important: This options needs to be defined to recover
80        previous code.
81        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
82      - no longer loose real*8 precision along the way when using exf_iprec=64.
83    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
84      - change discretisation of evp-solver in order to avoid another exchange
85        (changes lab_sea) and clean up a little
86      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
87        help the adjoint (this also changes the results slightly)
88      - add a few "_d 0" where they had been missing in seaice_evp.F
89      - cleaning up: remove unused seaice_calc_rhs.F
90    o pkg/exf: some cleaning-up:
91      - change various "constants" into runtime parameters
92      - cleaned-up Large&Yeager04 routine which should eventually
93        replace exf_bulkformulae.F (changed names of S/R and CPP)
94        and merged various ALLOW_ATM_WIND options
95     only used with thsice pkg (in thsice_get_exf.F):
96      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
97        which are used when useStabilityFct_overIce=TRUE (= the default)
98      - change default values of ice & snow emissivity and scale downward LW
99        by ice & snow emissivity.
100    o pkg/thsice:
101     fix few little problems, in thsice_calc_thickn.F:
102      - growth vertically (and not laterally) if iceFrac == iceMaskMax
103      - melt only laterally if hIce < hThinIce (as the comments say)
104      and in thsice_extend.F:
105      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
106      - start to form ice as soon as the minimum ice-volume is reachable.
107     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
108      and cpl_aim+ocn
109    o pkg/kpp
110     - move computation of surface related input fields to KPP into a new
111       subroutine kpp_forcing_surf.F
112     - remove wrong (within bi,bj loops) EXCH calls.
113     - little cleaning (add argument myThid in last position, cvs header ...)
114     - for now, fix conservation problem by exchanging KPPviscAz (may not
115       be the best fix)
116    o pkg/seaice
117     - check for inconsistent evp parameter/cpp-flag combination
118     - remove leftover errIO flat for obsolete name list error handling
119    o OpenAD
120     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
121    
122    checkpoint59a
123    o pkg/seaice: some parameter clarifications and a little bit of clean up
124    o pkg/thsice: rename run-time parameters:
125       himin       -> hIceMin
126       himin0      -> hThinIce
127       hihig       -> hThickIce
128       i0          -> i0swFrac
129       transCoef   -> bMeltCoef
130       frac_energy -> fracMelting
131      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
132       with default values (for now) that do not change the results.
133      remove old version of thsice vars advection in pkg/seaice.
134    o in FFIELDS.h:
135      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
136      - make pLoad & sIceLoad always available (but still only used if
137         ATMOSPHERIC_LOADING is #define).
138    o pkg/kpp: replaced _KPP_RL with _RL
139    o bug fixes for vertical diffusivity computations when both KPP and
140        3D diffusivity arrays are used.
141    o pkg/seaice: fix bug in evp solver, while doing that
142      - change (improve?) discretization of stress computations for both
143        cgrid-lsr and evp solver
144      - add a new routine to compute strain rates
145      - the above changes lab_sea results
146      - add no slip conditions for evp solver (off by default), lsr-version
147        may follow
148      - fix exchange for shear at Z-points (does not change lab_sea)
149      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
150        (to force the user to pick a time step since there is not "safe" way
151        of choosing it)
152      - add principal stress diagnostics
153      - rearrange fields for evp a little to avoid having to call a: too many
154        exchanges and b: exchanges for stress trensor components which we do
155        not have.
156      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
157        of evp, complete rewrite for lsr case (latter is does not yet work
158        in all cases)
159    o pkg/kpp: add code to have mixing in shelf ice caverns
160      - add myThid to all kpp routines (long overdue)
161    
162    checkpoint59
163    o pkg/exf:
164      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
165        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
166      - move exf header files from lower_case.h to UPPER_CASE.h ;
167        add missing cvs Header & Name
168      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
169      - add namelist param. selectStressGridPosition, exf_monFreq
170      - retire many _CLIM routines, and remove data.exf_clim
171        + params moved to data.exf
172        + climsst, climsss now handled by exf_set_gen, i.e.
173          climss?period=0 refers to constant field,
174          climss?period=-12 to monthly forcing
175      - split up namelists in data.exf
176    o pkg/seaice:
177      - remove seaice_exch and seaice_exch_uv
178      - remove superfluous exchange of theta
179      - add myThid to seaice_budget_ocean/ice
180      - add new interface for atmospheric wind forcing (C-grid only)
181        + new routine
182        + two new field (taux, tauy for stress over ice)
183        + removed one global field (DAIRN) for C-grid case only
184    o pkg/thsise
185      - 2nd set of modifs for thsice adjoint in conjunction with exf
186    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
187    
188    checkpoint58y_post
189    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
190      vertical diffusivity, similar to that in MOM4; turned on using
191      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
192      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
193    o Added capability for 3D specification of background vertical diffusion
194      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
195      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
196      "data" file that contains the 3D vertical diffusivity coefficients.
197    o ice dynamics (pkg/seaice) with thsice thermodynamics:
198      - add code within pkg thsice to advect & diffuse sea-ice fields
199      similar to (and will replace) what has been added in  seaice_advdiff.F,
200      but: - conserving Mass, Heat & Salt.
201           - better when using non-linear advection scheme (not yet fully tested)
202           - can also be used in atmospheric set-up (for now, only the diffusion).
203    
204    checkpoint58x_post
205    o IO option for global-file compact format:
206      - add options when generating topology (utils/exch2/matlab-topology-generator)
207      - add I/O capability (pkg/mdsio).
208      - adapt utils/matlab/rdmds.m to read this format.
209      for now long-line format not yet supported by pkg/mdsio (& exch2).
210    o shelfice: add a few diagnostics
211    
212    checkpoint58w_post
213    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
214      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
215      (and replace horiVertRatio in NH code).
216      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
217                         and tutorial_plume_on_slope (sensitive to truncation)
218    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
219      directly to drive seaice model (C-grid only)
220    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
221     - reintroduce computation of wind from stress,
222     - compute tau (in exf_bulkformulae.F) from windstress averaged to
223       mass points to avoid tau = 0
224     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
225    o rdmnc.m: make it work with "global" files created with gluemnc
226    o rdmnc.m : some improvements in dealing with singleton dimension
227      (tested on all testreport mnc output files).
228    o genmake2: disable pkg/profiles if netcdf test fails.
229    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
230    o move call to cal_readparms up to make calendar parameters/variable available
231      to all packages
232    
233    checkpoint58v_post
234    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
235      useDynP_inEos_Zc tested.
236    o pkg/exf: changes to properly interpolate/mask/scale initial fields
237    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
238      and portions thereof.  See read_cs.txt for description and examples.
239    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
240      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
241      following the great-circle arc between those 2 points.
242    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
243      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
244    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
245     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
246     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
247     - still needs work (not working with some options ; efficiency to improve)
248       and serious testing.
249     - use this scheme for temperature & salinity in 2 advection test exp.:
250       advect_xy & advect_xz, respectively.
251    
252    checkpoint58u_post
253    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
254    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
255    o testreport: add option "-skipdir" to skip some test.
256    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
257      momentum calculation.
258    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
259    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
260      remove checkpoint.F and the_correction_step.F (no longer used);
261      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
262    o add option (linFSConserveTr) to correct for tracer source/sink due to
263      Linear Free surface
264    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
265    o pkg/thsice: fix reading mnc-pickups
266    
267    checkpoint58t_post
268    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
269    o pkg/mdsio:
270     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
271       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
272       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
273     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
274     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
275       either MDS_READ_FIELD or MDS_WRITE_FIELD )
276     - new S/R (to replace MDSWRITEMETA), which allows to write more
277       informations (variable names, time ...) to meta files.
278     - modify rdmds.m to give back the meta file content.
279  o pkg/diagnostics: change vertical interpolation to be safer, and more  o pkg/diagnostics: change vertical interpolation to be safer, and more
280     flexible (define p-levels to interpolate to in data.diagnostics);     flexible (define p-levels to interpolate to in data.diagnostics);
281    add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right    add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
282     diagnostic pointer.     diagnostic pointer.
283  o pkg/seaice: more cleaning up of seaice_growth, added many comments  o pkg/seaice: more cleaning up of seaice_growth, added many comments
284  o pkg/exf: put runoff0 and runoff into the appropriate common block  o pkg/exf: put runoff0 and runoff1 into the appropriate common block
285  o fix multi-category seaice:  o fix multi-category seaice:
286   - change cpp flag SEAICE_MULTILEVEL to more meaningful name:   - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
287     SEAICE_MULTICATEGORY     SEAICE_MULTICATEGORY

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