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revision 1.805 by jmc, Tue May 1 12:29:18 2007 UTC revision 1.857 by jmc, Mon Aug 6 21:44:50 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 exch2 adjoint
8      First set of changes:
9      - add exch2 hand-written adjoint templates
10      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
11        This will require cleanup in pkg/autodiff/*.F
12        (changed routines currently kept separate in verif. code/)
13      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
14        that used to hide exch2 or cubed-sphere specific code
15        (commented via 'cph-exch2')
16    o pkg/seaice
17      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
18    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
19       output of global_ocean.cs32x15.thsice .
20    
21    checkpoint59e
22    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
23      for B-grid vector (not yet tested) and C-grid vector (<- only used
24      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
25    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
26      (#ifdef ALLOW_SALT_PLUME)
27    o gather_2d/scatter_2d: removed halo regions
28    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
29      scheme and the corresponding test case (under front_relax dir). For now,
30      only available with Skew-flux form and not yet tested in realistic set-up.
31      adjoint: store directives updated, but gradient checks deteriorated,
32      so maybe GM/Redi adjoint is now broken.
33    o seaice adjoint
34      * add AREA, HEFF, HSNOW as control variable
35        (should not change lab_sea results)
36      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
37    o pkg/seaice:
38      * added computation of saltFlux in seaice_growth;
39        For time being, sea ice salinity is assumed constant
40        contribution of snow flooding to freshening of sea ice is neglected.
41        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
42        defaults to 0.0 in order to maintain backward compatibility.
43        Typical values for SEAICE_salinity are 4 to 10 g/kg.
44      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
45      * added SEAICE_availHeatFrac, which specifies fraction of surface level
46        heat content used to melt or grow ice
47      * commented out cap of HICE: it helps keep ice thinner
48      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
49      * applied OBCS T/S mask to HEFFM sea ice mask
50    
51    checkpoint59d
52    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
53     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
54     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
55    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
56     and change default value of parameter "GM_Small_Number";
57     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
58       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
59       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
60    o pkg/ecco: cost function when applying pkg/smooth to controls
61    o pkg/ctrl: add forcingPrecond run time parameter
62    o pkg/seaice:
63     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
64     - fix bug in metric terms of u-equation in LSR solver (implicit part),
65       changes verification/lab_sea
66     - rearrange implicit part of u-equation in LSR solver to make it easier to
67       read, understand, and debug. This causes changes at the truncation level.
68     - fix (serious) bug in the boundary conditions (sign error in the implicit
69       part) of the LSR solver. Changes all LSR results.
70     - fixed problem with HSNOW initialization to avoid thick snow when AREA
71       is initilized with small values - does not change lab_sea results.
72     - added HsnowFile initialization capability
73    o pkg/smooth: addition to model/src and pkg/ctrl so allow
74     initialization of pkg/smooth and application to control vector
75    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
76    o dependencies: pkg/profiles requires pkg/cal
77    o pkg/profiles:
78     - added option ALLOW_PROFILES_GENERICGRID
79         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
80         that interpolation information (grid points and coefficients) is provided
81         within the netcdf input files.
82         -> sample matlab scripts can be found in MITgcm_contrib/gael
83         that allow you to prepare netcdf input files.
84     - also modified: cleaner include statements, cleaner error print statements,
85       cleaner stops when error, and more tests of the netcdf input files consistency.
86    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
87    o pkg/seaice:
88     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
89       requires a new routine: seaice_diagnostics_fill.F
90     - make sure that seaice does not move if not forced (pressure replacement
91       method, Hibler and Ip, 1995), changes results
92     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
93     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
94       It is turned off by default (=-1.), because it changes the results.
95     - make it possible to read AREA from a file, too.
96    
97    checkpoint59c
98    o add S/R and diagnostics for oceanic mixed-layer depth
99    o move GMRedi call after all vertical mixing schemes (including KPP)
100    o pkg/thsice:
101     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
102      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
103    o pkg/obcs:
104     - bug fix for balance code
105    o pkg/seaice:
106      - allow values of SEAICE_elasticParm > 1
107      - add new parameter SEAICE_evpTauRelax as an alternative
108        to SEAICE_elasticParm
109      - make lsr boundary conditions free slip (by default), changes result
110      - add code for no slip boundary conditions for lsr
111      - set minimum of zeta to zero (and not 4e8) (changes results)
112      - add a cap on AREA after advecting AREA if seaice_growth is not called
113    o change calculation of Visbeck K:
114      - no longer depend on tapering scheme; instead, compute slope (limited
115        by GM_maxSlope). this is equivalent to what was comuted before with
116        clipping or linear tappering.
117      - fix vertical averaging (wrong by 1/2 level)
118      - leave the old version (but will not be maintained) within
119        #ifdef OLD_VISBECK_CALC / #endif
120      - update output of exp. ideal_2D_oce
121    o change error catch in calc_r_star to improve vectorization
122    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
123      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
124    o adjoint:
125      Re-organized adjoint checkpointing according to Matt Mazloff
126      (but with modifs/completions/cleanups)
127      Storing is now bundled into large arrays to optimized I/O
128      (and second step in cleanup of the_main_loop)
129    
130    checkpoint59b
131    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
132      - export/import (between ocean & coupler) fields needed for ocean DIC.
133    o pkg/seaice:
134      - get rid of three more exchanges seaice_calc_viscosities (required
135        different loop boundaries in seaice_lsr and seaice_ocean_stress)
136      - bug fix in seaice_ocean_stress (update of lab_sea required)
137      - reduce loop boundaries to necessary minimum also in seaice_evp
138      - go back to the old way of computing deltaC/Z as the adjoint likes that
139        better
140    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
141      passive tracer to an Age Tracer) + update output.txt
142    o pkg/exf:
143      - implement A-grid / C-grid selection for wind-stress input files.
144      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
145      for now, in exf_bulk_largeyeager04.F only :
146      - change implementation for case where windspeed + 2. components wind-stress
147        are read-in. AND use rhoConstFresh to convert evap.
148    o pkg/seaice:
149      - use correct EXCH_UV for wind-forcing (on A-grid).
150      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
151        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
152    o pkg/exf:
153      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
154      EXF_INTERPOLATION:
155      - merge global_with_exf/code version of exf_interp_read.F
156        to the main code ;
157      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
158        reading the file ; Important: This options needs to be defined to recover
159        previous code.
160        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
161      - no longer loose real*8 precision along the way when using exf_iprec=64.
162    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
163      - change discretisation of evp-solver in order to avoid another exchange
164        (changes lab_sea) and clean up a little
165      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
166        help the adjoint (this also changes the results slightly)
167      - add a few "_d 0" where they had been missing in seaice_evp.F
168      - cleaning up: remove unused seaice_calc_rhs.F
169    o pkg/exf: some cleaning-up:
170      - change various "constants" into runtime parameters
171      - cleaned-up Large&Yeager04 routine which should eventually
172        replace exf_bulkformulae.F (changed names of S/R and CPP)
173        and merged various ALLOW_ATM_WIND options
174     only used with thsice pkg (in thsice_get_exf.F):
175      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
176        which are used when useStabilityFct_overIce=TRUE (= the default)
177      - change default values of ice & snow emissivity and scale downward LW
178        by ice & snow emissivity.
179    o pkg/thsice:
180     fix few little problems, in thsice_calc_thickn.F:
181      - growth vertically (and not laterally) if iceFrac == iceMaskMax
182      - melt only laterally if hIce < hThinIce (as the comments say)
183      and in thsice_extend.F:
184      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
185      - start to form ice as soon as the minimum ice-volume is reachable.
186     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
187      and cpl_aim+ocn
188    o pkg/kpp
189     - move computation of surface related input fields to KPP into a new
190       subroutine kpp_forcing_surf.F
191     - remove wrong (within bi,bj loops) EXCH calls.
192     - little cleaning (add argument myThid in last position, cvs header ...)
193     - for now, fix conservation problem by exchanging KPPviscAz (may not
194       be the best fix)
195    o pkg/seaice
196     - check for inconsistent evp parameter/cpp-flag combination
197     - remove leftover errIO flat for obsolete name list error handling
198    o OpenAD
199     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
200    
201  checkpoint59a  checkpoint59a
202  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
203  o pkg/thsice: rename run-time parameters:  o pkg/thsice: rename run-time parameters:

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