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revision 1.789 by jmc, Mon Apr 16 23:48:40 2007 UTC revision 1.851 by dimitri, Thu Jul 19 15:34:50 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 gather_2d/scatter_2d: removed halo regions
8    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
9      scheme and the corresponding test case (under front_relax dir). For now,
10      only available with Skew-flux form and not yet tested in realistic set-up.
11      adjoint: store directives updated, but gradient checks deteriorated,
12      so maybe GM/Redi adjoint is now broken.
13    o seaice adjoint
14      * add AREA, HEFF, HSNOW as control variable
15        (should not change lab_sea results)
16      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
17    o pkg/seaice:
18      * added computation of saltFlux in seaice_growth;
19        For time being, sea ice salinity is assumed constant
20        contribution of snow flooding to freshening of sea ice is neglected.
21        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
22        defaults to 0.0 in order to maintain backward compatibility.
23        Typical values for SEAICE_salinity are 4 to 10 g/kg.
24      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
25      * added SEAICE_availHeatFrac, which specifies fraction of surface level
26        heat content used to melt or grow ice
27      * commented out cap of HICE: it helps keep ice thinner
28      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
29      * applied OBCS T/S mask to HEFFM sea ice mask
30    
31    checkpoint59d
32    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
33     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
34     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
35    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
36     and change default value of parameter "GM_Small_Number";
37     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
38       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
39       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
40    o pkg/ecco: cost function when applying pkg/smooth to controls
41    o pkg/ctrl: add forcingPrecond run time parameter
42    o pkg/seaice:
43     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
44     - fix bug in metric terms of u-equation in LSR solver (implicit part),
45       changes verification/lab_sea
46     - rearrange implicit part of u-equation in LSR solver to make it easier to
47       read, understand, and debug. This causes changes at the truncation level.
48     - fix (serious) bug in the boundary conditions (sign error in the implicit
49       part) of the LSR solver. Changes all LSR results.
50     - fixed problem with HSNOW initialization to avoid thick snow when AREA
51       is initilized with small values - does not change lab_sea results.
52     - added HsnowFile initialization capability
53    o pkg/smooth: addition to model/src and pkg/ctrl so allow
54     initialization of pkg/smooth and application to control vector
55    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
56    o dependencies: pkg/profiles requires pkg/cal
57    o pkg/profiles:
58     - added option ALLOW_PROFILES_GENERICGRID
59         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
60         that interpolation information (grid points and coefficients) is provided
61         within the netcdf input files.
62         -> sample matlab scripts can be found in MITgcm_contrib/gael
63         that allow you to prepare netcdf input files.
64     - also modified: cleaner include statements, cleaner error print statements,
65       cleaner stops when error, and more tests of the netcdf input files consistency.
66    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
67    o pkg/seaice:
68     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
69       requires a new routine: seaice_diagnostics_fill.F
70     - make sure that seaice does not move if not forced (pressure replacement
71       method, Hibler and Ip, 1995), changes results
72     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
73     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
74       It is turned off by default (=-1.), because it changes the results.
75     - make it possible to read AREA from a file, too.
76    
77    checkpoint59c
78    o add S/R and diagnostics for oceanic mixed-layer depth
79    o move GMRedi call after all vertical mixing schemes (including KPP)
80    o pkg/thsice:
81     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
82      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
83    o pkg/obcs:
84     - bug fix for balance code
85    o pkg/seaice:
86      - allow values of SEAICE_elasticParm > 1
87      - add new parameter SEAICE_evpTauRelax as an alternative
88        to SEAICE_elasticParm
89      - make lsr boundary conditions free slip (by default), changes result
90      - add code for no slip boundary conditions for lsr
91      - set minimum of zeta to zero (and not 4e8) (changes results)
92      - add a cap on AREA after advecting AREA if seaice_growth is not called
93    o change calculation of Visbeck K:
94      - no longer depend on tapering scheme; instead, compute slope (limited
95        by GM_maxSlope). this is equivalent to what was comuted before with
96        clipping or linear tappering.
97      - fix vertical averaging (wrong by 1/2 level)
98      - leave the old version (but will not be maintained) within
99        #ifdef OLD_VISBECK_CALC / #endif
100      - update output of exp. ideal_2D_oce
101    o change error catch in calc_r_star to improve vectorization
102    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
103      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
104    o adjoint:
105      Re-organized adjoint checkpointing according to Matt Mazloff
106      (but with modifs/completions/cleanups)
107      Storing is now bundled into large arrays to optimized I/O
108      (and second step in cleanup of the_main_loop)
109    
110    checkpoint59b
111    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
112      - export/import (between ocean & coupler) fields needed for ocean DIC.
113    o pkg/seaice:
114      - get rid of three more exchanges seaice_calc_viscosities (required
115        different loop boundaries in seaice_lsr and seaice_ocean_stress)
116      - bug fix in seaice_ocean_stress (update of lab_sea required)
117      - reduce loop boundaries to necessary minimum also in seaice_evp
118      - go back to the old way of computing deltaC/Z as the adjoint likes that
119        better
120    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
121      passive tracer to an Age Tracer) + update output.txt
122    o pkg/exf:
123      - implement A-grid / C-grid selection for wind-stress input files.
124      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
125      for now, in exf_bulk_largeyeager04.F only :
126      - change implementation for case where windspeed + 2. components wind-stress
127        are read-in. AND use rhoConstFresh to convert evap.
128    o pkg/seaice:
129      - use correct EXCH_UV for wind-forcing (on A-grid).
130      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
131        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
132  o pkg/exf:  o pkg/exf:
133    move exf header files from lower_case.h to UPPER_CASE.h ;    - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
134    add missing cvs Header & Name    EXF_INTERPOLATION:
135      - merge global_with_exf/code version of exf_interp_read.F
136        to the main code ;
137      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
138        reading the file ; Important: This options needs to be defined to recover
139        previous code.
140        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
141      - no longer loose real*8 precision along the way when using exf_iprec=64.
142    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
143      - change discretisation of evp-solver in order to avoid another exchange
144        (changes lab_sea) and clean up a little
145      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
146        help the adjoint (this also changes the results slightly)
147      - add a few "_d 0" where they had been missing in seaice_evp.F
148      - cleaning up: remove unused seaice_calc_rhs.F
149    o pkg/exf: some cleaning-up:
150      - change various "constants" into runtime parameters
151      - cleaned-up Large&Yeager04 routine which should eventually
152        replace exf_bulkformulae.F (changed names of S/R and CPP)
153        and merged various ALLOW_ATM_WIND options
154     only used with thsice pkg (in thsice_get_exf.F):
155      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
156        which are used when useStabilityFct_overIce=TRUE (= the default)
157      - change default values of ice & snow emissivity and scale downward LW
158        by ice & snow emissivity.
159    o pkg/thsice:
160     fix few little problems, in thsice_calc_thickn.F:
161      - growth vertically (and not laterally) if iceFrac == iceMaskMax
162      - melt only laterally if hIce < hThinIce (as the comments say)
163      and in thsice_extend.F:
164      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
165      - start to form ice as soon as the minimum ice-volume is reachable.
166     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
167      and cpl_aim+ocn
168    o pkg/kpp
169     - move computation of surface related input fields to KPP into a new
170       subroutine kpp_forcing_surf.F
171     - remove wrong (within bi,bj loops) EXCH calls.
172     - little cleaning (add argument myThid in last position, cvs header ...)
173     - for now, fix conservation problem by exchanging KPPviscAz (may not
174       be the best fix)
175    o pkg/seaice
176     - check for inconsistent evp parameter/cpp-flag combination
177     - remove leftover errIO flat for obsolete name list error handling
178    o OpenAD
179     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
180    
181    checkpoint59a
182    o pkg/seaice: some parameter clarifications and a little bit of clean up
183    o pkg/thsice: rename run-time parameters:
184       himin       -> hIceMin
185       himin0      -> hThinIce
186       hihig       -> hThickIce
187       i0          -> i0swFrac
188       transCoef   -> bMeltCoef
189       frac_energy -> fracMelting
190      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
191       with default values (for now) that do not change the results.
192      remove old version of thsice vars advection in pkg/seaice.
193    o in FFIELDS.h:
194      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
195      - make pLoad & sIceLoad always available (but still only used if
196         ATMOSPHERIC_LOADING is #define).
197    o pkg/kpp: replaced _KPP_RL with _RL
198    o bug fixes for vertical diffusivity computations when both KPP and
199        3D diffusivity arrays are used.
200    o pkg/seaice: fix bug in evp solver, while doing that
201      - change (improve?) discretization of stress computations for both
202        cgrid-lsr and evp solver
203      - add a new routine to compute strain rates
204      - the above changes lab_sea results
205      - add no slip conditions for evp solver (off by default), lsr-version
206        may follow
207      - fix exchange for shear at Z-points (does not change lab_sea)
208      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
209        (to force the user to pick a time step since there is not "safe" way
210        of choosing it)
211      - add principal stress diagnostics
212      - rearrange fields for evp a little to avoid having to call a: too many
213        exchanges and b: exchanges for stress trensor components which we do
214        not have.
215      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
216        of evp, complete rewrite for lsr case (latter is does not yet work
217        in all cases)
218    o pkg/kpp: add code to have mixing in shelf ice caverns
219      - add myThid to all kpp routines (long overdue)
220    
221    checkpoint59
222    o pkg/exf:
223      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
224        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
225      - move exf header files from lower_case.h to UPPER_CASE.h ;
226        add missing cvs Header & Name
227      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
228      - add namelist param. selectStressGridPosition, exf_monFreq
229      - retire many _CLIM routines, and remove data.exf_clim
230        + params moved to data.exf
231        + climsst, climsss now handled by exf_set_gen, i.e.
232          climss?period=0 refers to constant field,
233          climss?period=-12 to monthly forcing
234      - split up namelists in data.exf
235  o pkg/seaice:  o pkg/seaice:
236    - remove seaice_exch and seaice_exch_uv    - remove seaice_exch and seaice_exch_uv
237    - remove superfluous exchange of theta    - remove superfluous exchange of theta
238    - add myThid to seaice_budget_ocean/ice    - add myThid to seaice_budget_ocean/ice
239      - add new interface for atmospheric wind forcing (C-grid only)
240        + new routine
241        + two new field (taux, tauy for stress over ice)
242        + removed one global field (DAIRN) for C-grid case only
243    o pkg/thsise
244      - 2nd set of modifs for thsice adjoint in conjunction with exf
245    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
246    
247  checkpoint58y_post  checkpoint58y_post
248  o Added capability for latitudinal dependence of Bryan and Lewis, 1979  o Added capability for latitudinal dependence of Bryan and Lewis, 1979

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