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revision 1.803 by mlosch, Mon Apr 30 22:48:52 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  o pkg/seaice: some parameter clarifications and a little bit of clean up
189  o pkg/thsice: rename run-time parameters:  o pkg/thsice: rename run-time parameters:
190     himin       -> hIceMin     himin       -> hIceMin
# Line 41  o pkg/seaice: fix bug in evp solver, whi Line 222  o pkg/seaice: fix bug in evp solver, whi
222      of evp, complete rewrite for lsr case (latter is does not yet work      of evp, complete rewrite for lsr case (latter is does not yet work
223      in all cases)      in all cases)
224  o pkg/kpp: add code to have mixing in shelf ice caverns  o pkg/kpp: add code to have mixing in shelf ice caverns
225      - add myThid to all kpp routines (long overdue)
226    
227  checkpoint59  checkpoint59
228  o pkg/exf:  o pkg/exf:

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