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revision 1.769 by dimitri, Wed Feb 7 17:38:11 2007 UTC revision 1.831 by mlosch, Tue Jun 5 16:01:45 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 pkg/seaice:
8     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
9     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
10       It is turned off by default (=-1.), because it changes the results.
11     - make it possible to read AREA from a file, too.
12    
13    checkpoint59c
14    o add S/R and diagnostics for oceanic mixed-layer depth
15    o move GMRedi call after all vertical mixing schemes (including KPP)
16    o pkg/thsice:
17     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
18      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
19    o pkg/obcs:
20     - bug fix for balance code
21    o pkg/seaice:
22      - allow values of SEAICE_elasticParm > 1
23      - add new parameter SEAICE_evpTauRelax as an alternative
24        to SEAICE_elasticParm
25      - make lsr boundary conditions free slip (by default), changes result
26      - add code for no slip boundary conditions for lsr
27      - set minimum of zeta to zero (and not 4e8) (changes results)
28      - add a cap on AREA after advecting AREA if seaice_growth is not called
29    o change calculation of Visbeck K:
30      - no longer depend on tapering scheme; instead, compute slope (limited
31        by GM_maxSlope). this is equivalent to what was comuted before with
32        clipping or linear tappering.
33      - fix vertical averaging (wrong by 1/2 level)
34      - leave the old version (but will not be maintained) within
35        #ifdef OLD_VISBECK_CALC / #endif
36      - update output of exp. ideal_2D_oce
37    o change error catch in calc_r_star to improve vectorization
38    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
39      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
40    o adjoint:
41      Re-organized adjoint checkpointing according to Matt Mazloff
42      (but with modifs/completions/cleanups)
43      Storing is now bundled into large arrays to optimized I/O
44      (and second step in cleanup of the_main_loop)
45    
46    checkpoint59b
47    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
48      - export/import (between ocean & coupler) fields needed for ocean DIC.
49    o pkg/seaice:
50      - get rid of three more exchanges seaice_calc_viscosities (required
51        different loop boundaries in seaice_lsr and seaice_ocean_stress)
52      - bug fix in seaice_ocean_stress (update of lab_sea required)
53      - reduce loop boundaries to necessary minimum also in seaice_evp
54      - go back to the old way of computing deltaC/Z as the adjoint likes that
55        better
56    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
57      passive tracer to an Age Tracer) + update output.txt
58    o pkg/exf:
59      - implement A-grid / C-grid selection for wind-stress input files.
60      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
61      for now, in exf_bulk_largeyeager04.F only :
62      - change implementation for case where windspeed + 2. components wind-stress
63        are read-in. AND use rhoConstFresh to convert evap.
64    o pkg/seaice:
65      - use correct EXCH_UV for wind-forcing (on A-grid).
66      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
67        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
68    o pkg/exf:
69      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
70      EXF_INTERPOLATION:
71      - merge global_with_exf/code version of exf_interp_read.F
72        to the main code ;
73      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
74        reading the file ; Important: This options needs to be defined to recover
75        previous code.
76        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
77      - no longer loose real*8 precision along the way when using exf_iprec=64.
78    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
79      - change discretisation of evp-solver in order to avoid another exchange
80        (changes lab_sea) and clean up a little
81      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
82        help the adjoint (this also changes the results slightly)
83      - add a few "_d 0" where they had been missing in seaice_evp.F
84      - cleaning up: remove unused seaice_calc_rhs.F
85    o pkg/exf: some cleaning-up:
86      - change various "constants" into runtime parameters
87      - cleaned-up Large&Yeager04 routine which should eventually
88        replace exf_bulkformulae.F (changed names of S/R and CPP)
89        and merged various ALLOW_ATM_WIND options
90     only used with thsice pkg (in thsice_get_exf.F):
91      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
92        which are used when useStabilityFct_overIce=TRUE (= the default)
93      - change default values of ice & snow emissivity and scale downward LW
94        by ice & snow emissivity.
95    o pkg/thsice:
96     fix few little problems, in thsice_calc_thickn.F:
97      - growth vertically (and not laterally) if iceFrac == iceMaskMax
98      - melt only laterally if hIce < hThinIce (as the comments say)
99      and in thsice_extend.F:
100      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
101      - start to form ice as soon as the minimum ice-volume is reachable.
102     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
103      and cpl_aim+ocn
104    o pkg/kpp
105     - move computation of surface related input fields to KPP into a new
106       subroutine kpp_forcing_surf.F
107     - remove wrong (within bi,bj loops) EXCH calls.
108     - little cleaning (add argument myThid in last position, cvs header ...)
109     - for now, fix conservation problem by exchanging KPPviscAz (may not
110       be the best fix)
111    o pkg/seaice
112     - check for inconsistent evp parameter/cpp-flag combination
113     - remove leftover errIO flat for obsolete name list error handling
114    o OpenAD
115     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
116    
117    checkpoint59a
118    o pkg/seaice: some parameter clarifications and a little bit of clean up
119    o pkg/thsice: rename run-time parameters:
120       himin       -> hIceMin
121       himin0      -> hThinIce
122       hihig       -> hThickIce
123       i0          -> i0swFrac
124       transCoef   -> bMeltCoef
125       frac_energy -> fracMelting
126      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
127       with default values (for now) that do not change the results.
128      remove old version of thsice vars advection in pkg/seaice.
129    o in FFIELDS.h:
130      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
131      - make pLoad & sIceLoad always available (but still only used if
132         ATMOSPHERIC_LOADING is #define).
133    o pkg/kpp: replaced _KPP_RL with _RL
134    o bug fixes for vertical diffusivity computations when both KPP and
135        3D diffusivity arrays are used.
136    o pkg/seaice: fix bug in evp solver, while doing that
137      - change (improve?) discretization of stress computations for both
138        cgrid-lsr and evp solver
139      - add a new routine to compute strain rates
140      - the above changes lab_sea results
141      - add no slip conditions for evp solver (off by default), lsr-version
142        may follow
143      - fix exchange for shear at Z-points (does not change lab_sea)
144      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
145        (to force the user to pick a time step since there is not "safe" way
146        of choosing it)
147      - add principal stress diagnostics
148      - rearrange fields for evp a little to avoid having to call a: too many
149        exchanges and b: exchanges for stress trensor components which we do
150        not have.
151      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
152        of evp, complete rewrite for lsr case (latter is does not yet work
153        in all cases)
154    o pkg/kpp: add code to have mixing in shelf ice caverns
155      - add myThid to all kpp routines (long overdue)
156    
157    checkpoint59
158    o pkg/exf:
159      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
160        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
161      - move exf header files from lower_case.h to UPPER_CASE.h ;
162        add missing cvs Header & Name
163      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
164      - add namelist param. selectStressGridPosition, exf_monFreq
165      - retire many _CLIM routines, and remove data.exf_clim
166        + params moved to data.exf
167        + climsst, climsss now handled by exf_set_gen, i.e.
168          climss?period=0 refers to constant field,
169          climss?period=-12 to monthly forcing
170      - split up namelists in data.exf
171    o pkg/seaice:
172      - remove seaice_exch and seaice_exch_uv
173      - remove superfluous exchange of theta
174      - add myThid to seaice_budget_ocean/ice
175      - add new interface for atmospheric wind forcing (C-grid only)
176        + new routine
177        + two new field (taux, tauy for stress over ice)
178        + removed one global field (DAIRN) for C-grid case only
179    o pkg/thsise
180      - 2nd set of modifs for thsice adjoint in conjunction with exf
181    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
182    
183    checkpoint58y_post
184    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
185      vertical diffusivity, similar to that in MOM4; turned on using
186      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
187      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
188    o Added capability for 3D specification of background vertical diffusion
189      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
190      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
191      "data" file that contains the 3D vertical diffusivity coefficients.
192    o ice dynamics (pkg/seaice) with thsice thermodynamics:
193      - add code within pkg thsice to advect & diffuse sea-ice fields
194      similar to (and will replace) what has been added in  seaice_advdiff.F,
195      but: - conserving Mass, Heat & Salt.
196           - better when using non-linear advection scheme (not yet fully tested)
197           - can also be used in atmospheric set-up (for now, only the diffusion).
198    
199    checkpoint58x_post
200    o IO option for global-file compact format:
201      - add options when generating topology (utils/exch2/matlab-topology-generator)
202      - add I/O capability (pkg/mdsio).
203      - adapt utils/matlab/rdmds.m to read this format.
204      for now long-line format not yet supported by pkg/mdsio (& exch2).
205    o shelfice: add a few diagnostics
206    
207    checkpoint58w_post
208    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
209      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
210      (and replace horiVertRatio in NH code).
211      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
212                         and tutorial_plume_on_slope (sensitive to truncation)
213    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
214      directly to drive seaice model (C-grid only)
215    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
216     - reintroduce computation of wind from stress,
217     - compute tau (in exf_bulkformulae.F) from windstress averaged to
218       mass points to avoid tau = 0
219     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
220    o rdmnc.m: make it work with "global" files created with gluemnc
221    o rdmnc.m : some improvements in dealing with singleton dimension
222      (tested on all testreport mnc output files).
223    o genmake2: disable pkg/profiles if netcdf test fails.
224    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
225    o move call to cal_readparms up to make calendar parameters/variable available
226      to all packages
227    
228    checkpoint58v_post
229    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
230      useDynP_inEos_Zc tested.
231  o pkg/exf: changes to properly interpolate/mask/scale initial fields  o pkg/exf: changes to properly interpolate/mask/scale initial fields
232  o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields  o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
233    and portions thereof.  See read_cs.txt for description and examples.    and portions thereof.  See read_cs.txt for description and examples.

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