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revision 1.779 by jmc, Wed Mar 21 15:31:33 2007 UTC revision 1.854 by jmc, Thu Jul 26 16:30:48 2007 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    checkpoint59e
8    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
9      for B-grid vector (not yet tested) and C-grid vector (<- only used
10      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
11    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
12      (#ifdef ALLOW_SALT_PLUME)
13    o gather_2d/scatter_2d: removed halo regions
14    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
15      scheme and the corresponding test case (under front_relax dir). For now,
16      only available with Skew-flux form and not yet tested in realistic set-up.
17      adjoint: store directives updated, but gradient checks deteriorated,
18      so maybe GM/Redi adjoint is now broken.
19    o seaice adjoint
20      * add AREA, HEFF, HSNOW as control variable
21        (should not change lab_sea results)
22      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
23    o pkg/seaice:
24      * added computation of saltFlux in seaice_growth;
25        For time being, sea ice salinity is assumed constant
26        contribution of snow flooding to freshening of sea ice is neglected.
27        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
28        defaults to 0.0 in order to maintain backward compatibility.
29        Typical values for SEAICE_salinity are 4 to 10 g/kg.
30      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
31      * added SEAICE_availHeatFrac, which specifies fraction of surface level
32        heat content used to melt or grow ice
33      * commented out cap of HICE: it helps keep ice thinner
34      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
35      * applied OBCS T/S mask to HEFFM sea ice mask
36    
37    checkpoint59d
38    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
39     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
40     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
41    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
42     and change default value of parameter "GM_Small_Number";
43     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
44       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
45       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
46    o pkg/ecco: cost function when applying pkg/smooth to controls
47    o pkg/ctrl: add forcingPrecond run time parameter
48    o pkg/seaice:
49     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
50     - fix bug in metric terms of u-equation in LSR solver (implicit part),
51       changes verification/lab_sea
52     - rearrange implicit part of u-equation in LSR solver to make it easier to
53       read, understand, and debug. This causes changes at the truncation level.
54     - fix (serious) bug in the boundary conditions (sign error in the implicit
55       part) of the LSR solver. Changes all LSR results.
56     - fixed problem with HSNOW initialization to avoid thick snow when AREA
57       is initilized with small values - does not change lab_sea results.
58     - added HsnowFile initialization capability
59    o pkg/smooth: addition to model/src and pkg/ctrl so allow
60     initialization of pkg/smooth and application to control vector
61    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
62    o dependencies: pkg/profiles requires pkg/cal
63    o pkg/profiles:
64     - added option ALLOW_PROFILES_GENERICGRID
65         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
66         that interpolation information (grid points and coefficients) is provided
67         within the netcdf input files.
68         -> sample matlab scripts can be found in MITgcm_contrib/gael
69         that allow you to prepare netcdf input files.
70     - also modified: cleaner include statements, cleaner error print statements,
71       cleaner stops when error, and more tests of the netcdf input files consistency.
72    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
73    o pkg/seaice:
74     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
75       requires a new routine: seaice_diagnostics_fill.F
76     - make sure that seaice does not move if not forced (pressure replacement
77       method, Hibler and Ip, 1995), changes results
78     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
79     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
80       It is turned off by default (=-1.), because it changes the results.
81     - make it possible to read AREA from a file, too.
82    
83    checkpoint59c
84    o add S/R and diagnostics for oceanic mixed-layer depth
85    o move GMRedi call after all vertical mixing schemes (including KPP)
86    o pkg/thsice:
87     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
88      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
89    o pkg/obcs:
90     - bug fix for balance code
91    o pkg/seaice:
92      - allow values of SEAICE_elasticParm > 1
93      - add new parameter SEAICE_evpTauRelax as an alternative
94        to SEAICE_elasticParm
95      - make lsr boundary conditions free slip (by default), changes result
96      - add code for no slip boundary conditions for lsr
97      - set minimum of zeta to zero (and not 4e8) (changes results)
98      - add a cap on AREA after advecting AREA if seaice_growth is not called
99    o change calculation of Visbeck K:
100      - no longer depend on tapering scheme; instead, compute slope (limited
101        by GM_maxSlope). this is equivalent to what was comuted before with
102        clipping or linear tappering.
103      - fix vertical averaging (wrong by 1/2 level)
104      - leave the old version (but will not be maintained) within
105        #ifdef OLD_VISBECK_CALC / #endif
106      - update output of exp. ideal_2D_oce
107    o change error catch in calc_r_star to improve vectorization
108    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
109      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
110    o adjoint:
111      Re-organized adjoint checkpointing according to Matt Mazloff
112      (but with modifs/completions/cleanups)
113      Storing is now bundled into large arrays to optimized I/O
114      (and second step in cleanup of the_main_loop)
115    
116    checkpoint59b
117    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
118      - export/import (between ocean & coupler) fields needed for ocean DIC.
119    o pkg/seaice:
120      - get rid of three more exchanges seaice_calc_viscosities (required
121        different loop boundaries in seaice_lsr and seaice_ocean_stress)
122      - bug fix in seaice_ocean_stress (update of lab_sea required)
123      - reduce loop boundaries to necessary minimum also in seaice_evp
124      - go back to the old way of computing deltaC/Z as the adjoint likes that
125        better
126    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
127      passive tracer to an Age Tracer) + update output.txt
128    o pkg/exf:
129      - implement A-grid / C-grid selection for wind-stress input files.
130      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
131      for now, in exf_bulk_largeyeager04.F only :
132      - change implementation for case where windspeed + 2. components wind-stress
133        are read-in. AND use rhoConstFresh to convert evap.
134    o pkg/seaice:
135      - use correct EXCH_UV for wind-forcing (on A-grid).
136      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
137        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
138    o pkg/exf:
139      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
140      EXF_INTERPOLATION:
141      - merge global_with_exf/code version of exf_interp_read.F
142        to the main code ;
143      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
144        reading the file ; Important: This options needs to be defined to recover
145        previous code.
146        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
147      - no longer loose real*8 precision along the way when using exf_iprec=64.
148    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
149      - change discretisation of evp-solver in order to avoid another exchange
150        (changes lab_sea) and clean up a little
151      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
152        help the adjoint (this also changes the results slightly)
153      - add a few "_d 0" where they had been missing in seaice_evp.F
154      - cleaning up: remove unused seaice_calc_rhs.F
155    o pkg/exf: some cleaning-up:
156      - change various "constants" into runtime parameters
157      - cleaned-up Large&Yeager04 routine which should eventually
158        replace exf_bulkformulae.F (changed names of S/R and CPP)
159        and merged various ALLOW_ATM_WIND options
160     only used with thsice pkg (in thsice_get_exf.F):
161      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
162        which are used when useStabilityFct_overIce=TRUE (= the default)
163      - change default values of ice & snow emissivity and scale downward LW
164        by ice & snow emissivity.
165    o pkg/thsice:
166     fix few little problems, in thsice_calc_thickn.F:
167      - growth vertically (and not laterally) if iceFrac == iceMaskMax
168      - melt only laterally if hIce < hThinIce (as the comments say)
169      and in thsice_extend.F:
170      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
171      - start to form ice as soon as the minimum ice-volume is reachable.
172     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
173      and cpl_aim+ocn
174    o pkg/kpp
175     - move computation of surface related input fields to KPP into a new
176       subroutine kpp_forcing_surf.F
177     - remove wrong (within bi,bj loops) EXCH calls.
178     - little cleaning (add argument myThid in last position, cvs header ...)
179     - for now, fix conservation problem by exchanging KPPviscAz (may not
180       be the best fix)
181    o pkg/seaice
182     - check for inconsistent evp parameter/cpp-flag combination
183     - remove leftover errIO flat for obsolete name list error handling
184    o OpenAD
185     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
186    
187    checkpoint59a
188    o pkg/seaice: some parameter clarifications and a little bit of clean up
189    o pkg/thsice: rename run-time parameters:
190       himin       -> hIceMin
191       himin0      -> hThinIce
192       hihig       -> hThickIce
193       i0          -> i0swFrac
194       transCoef   -> bMeltCoef
195       frac_energy -> fracMelting
196      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
197       with default values (for now) that do not change the results.
198      remove old version of thsice vars advection in pkg/seaice.
199    o in FFIELDS.h:
200      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
201      - make pLoad & sIceLoad always available (but still only used if
202         ATMOSPHERIC_LOADING is #define).
203    o pkg/kpp: replaced _KPP_RL with _RL
204    o bug fixes for vertical diffusivity computations when both KPP and
205        3D diffusivity arrays are used.
206    o pkg/seaice: fix bug in evp solver, while doing that
207      - change (improve?) discretization of stress computations for both
208        cgrid-lsr and evp solver
209      - add a new routine to compute strain rates
210      - the above changes lab_sea results
211      - add no slip conditions for evp solver (off by default), lsr-version
212        may follow
213      - fix exchange for shear at Z-points (does not change lab_sea)
214      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
215        (to force the user to pick a time step since there is not "safe" way
216        of choosing it)
217      - add principal stress diagnostics
218      - rearrange fields for evp a little to avoid having to call a: too many
219        exchanges and b: exchanges for stress trensor components which we do
220        not have.
221      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
222        of evp, complete rewrite for lsr case (latter is does not yet work
223        in all cases)
224    o pkg/kpp: add code to have mixing in shelf ice caverns
225      - add myThid to all kpp routines (long overdue)
226    
227    checkpoint59
228    o pkg/exf:
229      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
230        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
231      - move exf header files from lower_case.h to UPPER_CASE.h ;
232        add missing cvs Header & Name
233      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
234      - add namelist param. selectStressGridPosition, exf_monFreq
235      - retire many _CLIM routines, and remove data.exf_clim
236        + params moved to data.exf
237        + climsst, climsss now handled by exf_set_gen, i.e.
238          climss?period=0 refers to constant field,
239          climss?period=-12 to monthly forcing
240      - split up namelists in data.exf
241    o pkg/seaice:
242      - remove seaice_exch and seaice_exch_uv
243      - remove superfluous exchange of theta
244      - add myThid to seaice_budget_ocean/ice
245      - add new interface for atmospheric wind forcing (C-grid only)
246        + new routine
247        + two new field (taux, tauy for stress over ice)
248        + removed one global field (DAIRN) for C-grid case only
249    o pkg/thsise
250      - 2nd set of modifs for thsice adjoint in conjunction with exf
251    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
252    
253    checkpoint58y_post
254    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
255      vertical diffusivity, similar to that in MOM4; turned on using
256      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
257      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
258    o Added capability for 3D specification of background vertical diffusion
259      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
260      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
261      "data" file that contains the 3D vertical diffusivity coefficients.
262    o ice dynamics (pkg/seaice) with thsice thermodynamics:
263      - add code within pkg thsice to advect & diffuse sea-ice fields
264      similar to (and will replace) what has been added in  seaice_advdiff.F,
265      but: - conserving Mass, Heat & Salt.
266           - better when using non-linear advection scheme (not yet fully tested)
267           - can also be used in atmospheric set-up (for now, only the diffusion).
268    
269    checkpoint58x_post
270  o IO option for global-file compact format:  o IO option for global-file compact format:
271    - add options when generating topology (utils/exch2/matlab-topology-generator)    - add options when generating topology (utils/exch2/matlab-topology-generator)
272    - add I/O capability (pkg/mdsio).    - add I/O capability (pkg/mdsio).

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