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revision 1.766 by jmc, Tue Jan 16 19:45:13 2007 UTC revision 1.832 by mlosch, Wed Jun 6 14:37:14 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     - make sure that seaice does not move if not forced (pressure replacement
9       method, Hibler and Ip, 1995), changes results
10     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
11     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
12       It is turned off by default (=-1.), because it changes the results.
13     - make it possible to read AREA from a file, too.
14    
15    checkpoint59c
16    o add S/R and diagnostics for oceanic mixed-layer depth
17    o move GMRedi call after all vertical mixing schemes (including KPP)
18    o pkg/thsice:
19     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
20      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
21    o pkg/obcs:
22     - bug fix for balance code
23    o pkg/seaice:
24      - allow values of SEAICE_elasticParm > 1
25      - add new parameter SEAICE_evpTauRelax as an alternative
26        to SEAICE_elasticParm
27      - make lsr boundary conditions free slip (by default), changes result
28      - add code for no slip boundary conditions for lsr
29      - set minimum of zeta to zero (and not 4e8) (changes results)
30      - add a cap on AREA after advecting AREA if seaice_growth is not called
31    o change calculation of Visbeck K:
32      - no longer depend on tapering scheme; instead, compute slope (limited
33        by GM_maxSlope). this is equivalent to what was comuted before with
34        clipping or linear tappering.
35      - fix vertical averaging (wrong by 1/2 level)
36      - leave the old version (but will not be maintained) within
37        #ifdef OLD_VISBECK_CALC / #endif
38      - update output of exp. ideal_2D_oce
39    o change error catch in calc_r_star to improve vectorization
40    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
41      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
42    o adjoint:
43      Re-organized adjoint checkpointing according to Matt Mazloff
44      (but with modifs/completions/cleanups)
45      Storing is now bundled into large arrays to optimized I/O
46      (and second step in cleanup of the_main_loop)
47    
48    checkpoint59b
49    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
50      - export/import (between ocean & coupler) fields needed for ocean DIC.
51    o pkg/seaice:
52      - get rid of three more exchanges seaice_calc_viscosities (required
53        different loop boundaries in seaice_lsr and seaice_ocean_stress)
54      - bug fix in seaice_ocean_stress (update of lab_sea required)
55      - reduce loop boundaries to necessary minimum also in seaice_evp
56      - go back to the old way of computing deltaC/Z as the adjoint likes that
57        better
58    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
59      passive tracer to an Age Tracer) + update output.txt
60    o pkg/exf:
61      - implement A-grid / C-grid selection for wind-stress input files.
62      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
63      for now, in exf_bulk_largeyeager04.F only :
64      - change implementation for case where windspeed + 2. components wind-stress
65        are read-in. AND use rhoConstFresh to convert evap.
66    o pkg/seaice:
67      - use correct EXCH_UV for wind-forcing (on A-grid).
68      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
69        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
70    o pkg/exf:
71      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
72      EXF_INTERPOLATION:
73      - merge global_with_exf/code version of exf_interp_read.F
74        to the main code ;
75      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
76        reading the file ; Important: This options needs to be defined to recover
77        previous code.
78        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
79      - no longer loose real*8 precision along the way when using exf_iprec=64.
80    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
81      - change discretisation of evp-solver in order to avoid another exchange
82        (changes lab_sea) and clean up a little
83      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
84        help the adjoint (this also changes the results slightly)
85      - add a few "_d 0" where they had been missing in seaice_evp.F
86      - cleaning up: remove unused seaice_calc_rhs.F
87    o pkg/exf: some cleaning-up:
88      - change various "constants" into runtime parameters
89      - cleaned-up Large&Yeager04 routine which should eventually
90        replace exf_bulkformulae.F (changed names of S/R and CPP)
91        and merged various ALLOW_ATM_WIND options
92     only used with thsice pkg (in thsice_get_exf.F):
93      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
94        which are used when useStabilityFct_overIce=TRUE (= the default)
95      - change default values of ice & snow emissivity and scale downward LW
96        by ice & snow emissivity.
97    o pkg/thsice:
98     fix few little problems, in thsice_calc_thickn.F:
99      - growth vertically (and not laterally) if iceFrac == iceMaskMax
100      - melt only laterally if hIce < hThinIce (as the comments say)
101      and in thsice_extend.F:
102      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
103      - start to form ice as soon as the minimum ice-volume is reachable.
104     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
105      and cpl_aim+ocn
106    o pkg/kpp
107     - move computation of surface related input fields to KPP into a new
108       subroutine kpp_forcing_surf.F
109     - remove wrong (within bi,bj loops) EXCH calls.
110     - little cleaning (add argument myThid in last position, cvs header ...)
111     - for now, fix conservation problem by exchanging KPPviscAz (may not
112       be the best fix)
113    o pkg/seaice
114     - check for inconsistent evp parameter/cpp-flag combination
115     - remove leftover errIO flat for obsolete name list error handling
116    o OpenAD
117     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
118    
119    checkpoint59a
120    o pkg/seaice: some parameter clarifications and a little bit of clean up
121    o pkg/thsice: rename run-time parameters:
122       himin       -> hIceMin
123       himin0      -> hThinIce
124       hihig       -> hThickIce
125       i0          -> i0swFrac
126       transCoef   -> bMeltCoef
127       frac_energy -> fracMelting
128      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
129       with default values (for now) that do not change the results.
130      remove old version of thsice vars advection in pkg/seaice.
131    o in FFIELDS.h:
132      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
133      - make pLoad & sIceLoad always available (but still only used if
134         ATMOSPHERIC_LOADING is #define).
135    o pkg/kpp: replaced _KPP_RL with _RL
136    o bug fixes for vertical diffusivity computations when both KPP and
137        3D diffusivity arrays are used.
138    o pkg/seaice: fix bug in evp solver, while doing that
139      - change (improve?) discretization of stress computations for both
140        cgrid-lsr and evp solver
141      - add a new routine to compute strain rates
142      - the above changes lab_sea results
143      - add no slip conditions for evp solver (off by default), lsr-version
144        may follow
145      - fix exchange for shear at Z-points (does not change lab_sea)
146      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
147        (to force the user to pick a time step since there is not "safe" way
148        of choosing it)
149      - add principal stress diagnostics
150      - rearrange fields for evp a little to avoid having to call a: too many
151        exchanges and b: exchanges for stress trensor components which we do
152        not have.
153      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
154        of evp, complete rewrite for lsr case (latter is does not yet work
155        in all cases)
156    o pkg/kpp: add code to have mixing in shelf ice caverns
157      - add myThid to all kpp routines (long overdue)
158    
159    checkpoint59
160    o pkg/exf:
161      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
162        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
163      - move exf header files from lower_case.h to UPPER_CASE.h ;
164        add missing cvs Header & Name
165      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
166      - add namelist param. selectStressGridPosition, exf_monFreq
167      - retire many _CLIM routines, and remove data.exf_clim
168        + params moved to data.exf
169        + climsst, climsss now handled by exf_set_gen, i.e.
170          climss?period=0 refers to constant field,
171          climss?period=-12 to monthly forcing
172      - split up namelists in data.exf
173    o pkg/seaice:
174      - remove seaice_exch and seaice_exch_uv
175      - remove superfluous exchange of theta
176      - add myThid to seaice_budget_ocean/ice
177      - add new interface for atmospheric wind forcing (C-grid only)
178        + new routine
179        + two new field (taux, tauy for stress over ice)
180        + removed one global field (DAIRN) for C-grid case only
181    o pkg/thsise
182      - 2nd set of modifs for thsice adjoint in conjunction with exf
183    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
184    
185    checkpoint58y_post
186    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
187      vertical diffusivity, similar to that in MOM4; turned on using
188      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
189      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
190    o Added capability for 3D specification of background vertical diffusion
191      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
192      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
193      "data" file that contains the 3D vertical diffusivity coefficients.
194    o ice dynamics (pkg/seaice) with thsice thermodynamics:
195      - add code within pkg thsice to advect & diffuse sea-ice fields
196      similar to (and will replace) what has been added in  seaice_advdiff.F,
197      but: - conserving Mass, Heat & Salt.
198           - better when using non-linear advection scheme (not yet fully tested)
199           - can also be used in atmospheric set-up (for now, only the diffusion).
200    
201    checkpoint58x_post
202    o IO option for global-file compact format:
203      - add options when generating topology (utils/exch2/matlab-topology-generator)
204      - add I/O capability (pkg/mdsio).
205      - adapt utils/matlab/rdmds.m to read this format.
206      for now long-line format not yet supported by pkg/mdsio (& exch2).
207    o shelfice: add a few diagnostics
208    
209    checkpoint58w_post
210    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
211      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
212      (and replace horiVertRatio in NH code).
213      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
214                         and tutorial_plume_on_slope (sensitive to truncation)
215    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
216      directly to drive seaice model (C-grid only)
217    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
218     - reintroduce computation of wind from stress,
219     - compute tau (in exf_bulkformulae.F) from windstress averaged to
220       mass points to avoid tau = 0
221     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
222    o rdmnc.m: make it work with "global" files created with gluemnc
223    o rdmnc.m : some improvements in dealing with singleton dimension
224      (tested on all testreport mnc output files).
225    o genmake2: disable pkg/profiles if netcdf test fails.
226    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
227    o move call to cal_readparms up to make calendar parameters/variable available
228      to all packages
229    
230    checkpoint58v_post
231    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
232      useDynP_inEos_Zc tested.
233    o pkg/exf: changes to properly interpolate/mask/scale initial fields
234    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
235      and portions thereof.  See read_cs.txt for description and examples.
236    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
237      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
238      following the great-circle arc between those 2 points.
239    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
240      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
241  o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in  o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
242   - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)   - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
243   - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)   - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)

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