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revision 1.796 by mlosch, Sun Apr 22 19:57:13 2007 UTC revision 1.856 by dimitri, Mon Aug 6 19:36:53 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    
19    checkpoint59e
20    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
21      for B-grid vector (not yet tested) and C-grid vector (<- only used
22      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
23    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
24      (#ifdef ALLOW_SALT_PLUME)
25    o gather_2d/scatter_2d: removed halo regions
26    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
27      scheme and the corresponding test case (under front_relax dir). For now,
28      only available with Skew-flux form and not yet tested in realistic set-up.
29      adjoint: store directives updated, but gradient checks deteriorated,
30      so maybe GM/Redi adjoint is now broken.
31    o seaice adjoint
32      * add AREA, HEFF, HSNOW as control variable
33        (should not change lab_sea results)
34      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
35    o pkg/seaice:
36      * added computation of saltFlux in seaice_growth;
37        For time being, sea ice salinity is assumed constant
38        contribution of snow flooding to freshening of sea ice is neglected.
39        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
40        defaults to 0.0 in order to maintain backward compatibility.
41        Typical values for SEAICE_salinity are 4 to 10 g/kg.
42      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
43      * added SEAICE_availHeatFrac, which specifies fraction of surface level
44        heat content used to melt or grow ice
45      * commented out cap of HICE: it helps keep ice thinner
46      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
47      * applied OBCS T/S mask to HEFFM sea ice mask
48    
49    checkpoint59d
50    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
51     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
52     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
53    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
54     and change default value of parameter "GM_Small_Number";
55     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
56       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
57       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
58    o pkg/ecco: cost function when applying pkg/smooth to controls
59    o pkg/ctrl: add forcingPrecond run time parameter
60    o pkg/seaice:
61     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
62     - fix bug in metric terms of u-equation in LSR solver (implicit part),
63       changes verification/lab_sea
64     - rearrange implicit part of u-equation in LSR solver to make it easier to
65       read, understand, and debug. This causes changes at the truncation level.
66     - fix (serious) bug in the boundary conditions (sign error in the implicit
67       part) of the LSR solver. Changes all LSR results.
68     - fixed problem with HSNOW initialization to avoid thick snow when AREA
69       is initilized with small values - does not change lab_sea results.
70     - added HsnowFile initialization capability
71    o pkg/smooth: addition to model/src and pkg/ctrl so allow
72     initialization of pkg/smooth and application to control vector
73    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
74    o dependencies: pkg/profiles requires pkg/cal
75    o pkg/profiles:
76     - added option ALLOW_PROFILES_GENERICGRID
77         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
78         that interpolation information (grid points and coefficients) is provided
79         within the netcdf input files.
80         -> sample matlab scripts can be found in MITgcm_contrib/gael
81         that allow you to prepare netcdf input files.
82     - also modified: cleaner include statements, cleaner error print statements,
83       cleaner stops when error, and more tests of the netcdf input files consistency.
84    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
85    o pkg/seaice:
86     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
87       requires a new routine: seaice_diagnostics_fill.F
88     - make sure that seaice does not move if not forced (pressure replacement
89       method, Hibler and Ip, 1995), changes results
90     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
91     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
92       It is turned off by default (=-1.), because it changes the results.
93     - make it possible to read AREA from a file, too.
94    
95    checkpoint59c
96    o add S/R and diagnostics for oceanic mixed-layer depth
97    o move GMRedi call after all vertical mixing schemes (including KPP)
98    o pkg/thsice:
99     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
100      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
101    o pkg/obcs:
102     - bug fix for balance code
103    o pkg/seaice:
104      - allow values of SEAICE_elasticParm > 1
105      - add new parameter SEAICE_evpTauRelax as an alternative
106        to SEAICE_elasticParm
107      - make lsr boundary conditions free slip (by default), changes result
108      - add code for no slip boundary conditions for lsr
109      - set minimum of zeta to zero (and not 4e8) (changes results)
110      - add a cap on AREA after advecting AREA if seaice_growth is not called
111    o change calculation of Visbeck K:
112      - no longer depend on tapering scheme; instead, compute slope (limited
113        by GM_maxSlope). this is equivalent to what was comuted before with
114        clipping or linear tappering.
115      - fix vertical averaging (wrong by 1/2 level)
116      - leave the old version (but will not be maintained) within
117        #ifdef OLD_VISBECK_CALC / #endif
118      - update output of exp. ideal_2D_oce
119    o change error catch in calc_r_star to improve vectorization
120    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
121      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
122    o adjoint:
123      Re-organized adjoint checkpointing according to Matt Mazloff
124      (but with modifs/completions/cleanups)
125      Storing is now bundled into large arrays to optimized I/O
126      (and second step in cleanup of the_main_loop)
127    
128    checkpoint59b
129    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
130      - export/import (between ocean & coupler) fields needed for ocean DIC.
131    o pkg/seaice:
132      - get rid of three more exchanges seaice_calc_viscosities (required
133        different loop boundaries in seaice_lsr and seaice_ocean_stress)
134      - bug fix in seaice_ocean_stress (update of lab_sea required)
135      - reduce loop boundaries to necessary minimum also in seaice_evp
136      - go back to the old way of computing deltaC/Z as the adjoint likes that
137        better
138    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
139      passive tracer to an Age Tracer) + update output.txt
140    o pkg/exf:
141      - implement A-grid / C-grid selection for wind-stress input files.
142      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
143      for now, in exf_bulk_largeyeager04.F only :
144      - change implementation for case where windspeed + 2. components wind-stress
145        are read-in. AND use rhoConstFresh to convert evap.
146    o pkg/seaice:
147      - use correct EXCH_UV for wind-forcing (on A-grid).
148      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
149        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
150    o pkg/exf:
151      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
152      EXF_INTERPOLATION:
153      - merge global_with_exf/code version of exf_interp_read.F
154        to the main code ;
155      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
156        reading the file ; Important: This options needs to be defined to recover
157        previous code.
158        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
159      - no longer loose real*8 precision along the way when using exf_iprec=64.
160    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
161      - change discretisation of evp-solver in order to avoid another exchange
162        (changes lab_sea) and clean up a little
163      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
164        help the adjoint (this also changes the results slightly)
165      - add a few "_d 0" where they had been missing in seaice_evp.F
166      - cleaning up: remove unused seaice_calc_rhs.F
167    o pkg/exf: some cleaning-up:
168      - change various "constants" into runtime parameters
169      - cleaned-up Large&Yeager04 routine which should eventually
170        replace exf_bulkformulae.F (changed names of S/R and CPP)
171        and merged various ALLOW_ATM_WIND options
172     only used with thsice pkg (in thsice_get_exf.F):
173      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
174        which are used when useStabilityFct_overIce=TRUE (= the default)
175      - change default values of ice & snow emissivity and scale downward LW
176        by ice & snow emissivity.
177    o pkg/thsice:
178     fix few little problems, in thsice_calc_thickn.F:
179      - growth vertically (and not laterally) if iceFrac == iceMaskMax
180      - melt only laterally if hIce < hThinIce (as the comments say)
181      and in thsice_extend.F:
182      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
183      - start to form ice as soon as the minimum ice-volume is reachable.
184     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
185      and cpl_aim+ocn
186    o pkg/kpp
187     - move computation of surface related input fields to KPP into a new
188       subroutine kpp_forcing_surf.F
189     - remove wrong (within bi,bj loops) EXCH calls.
190     - little cleaning (add argument myThid in last position, cvs header ...)
191     - for now, fix conservation problem by exchanging KPPviscAz (may not
192       be the best fix)
193    o pkg/seaice
194     - check for inconsistent evp parameter/cpp-flag combination
195     - remove leftover errIO flat for obsolete name list error handling
196    o OpenAD
197     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
198    
199    checkpoint59a
200    o pkg/seaice: some parameter clarifications and a little bit of clean up
201    o pkg/thsice: rename run-time parameters:
202       himin       -> hIceMin
203       himin0      -> hThinIce
204       hihig       -> hThickIce
205       i0          -> i0swFrac
206       transCoef   -> bMeltCoef
207       frac_energy -> fracMelting
208      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
209       with default values (for now) that do not change the results.
210      remove old version of thsice vars advection in pkg/seaice.
211    o in FFIELDS.h:
212      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
213      - make pLoad & sIceLoad always available (but still only used if
214         ATMOSPHERIC_LOADING is #define).
215    o pkg/kpp: replaced _KPP_RL with _RL
216    o bug fixes for vertical diffusivity computations when both KPP and
217        3D diffusivity arrays are used.
218  o pkg/seaice: fix bug in evp solver, while doing that  o pkg/seaice: fix bug in evp solver, while doing that
219    - change (improve?) discretization of stress computations for both    - change (improve?) discretization of stress computations for both
220      cgrid-lsr and evp solver      cgrid-lsr and evp solver
# Line 15  o pkg/seaice: fix bug in evp solver, whi Line 226  o pkg/seaice: fix bug in evp solver, whi
226    - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp    - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
227      (to force the user to pick a time step since there is not "safe" way      (to force the user to pick a time step since there is not "safe" way
228      of choosing it)      of choosing it)
229      - add principal stress diagnostics
230      - rearrange fields for evp a little to avoid having to call a: too many
231        exchanges and b: exchanges for stress trensor components which we do
232        not have.
233      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
234        of evp, complete rewrite for lsr case (latter is does not yet work
235        in all cases)
236  o pkg/kpp: add code to have mixing in shelf ice caverns  o pkg/kpp: add code to have mixing in shelf ice caverns
237      - add myThid to all kpp routines (long overdue)
238    
239  checkpoint59  checkpoint59
240  o pkg/exf:  o pkg/exf:

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