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revision 1.766 by jmc, Tue Jan 16 19:45:13 2007 UTC revision 1.852 by dimitri, Sun Jul 22 23:51:15 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 starting implementation of Duffy et al. (GRL 1999) salt plume scheme
8      (#ifdef ALLOW_SALT_PLUME)
9    o gather_2d/scatter_2d: removed halo regions
10    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
11      scheme and the corresponding test case (under front_relax dir). For now,
12      only available with Skew-flux form and not yet tested in realistic set-up.
13      adjoint: store directives updated, but gradient checks deteriorated,
14      so maybe GM/Redi adjoint is now broken.
15    o seaice adjoint
16      * add AREA, HEFF, HSNOW as control variable
17        (should not change lab_sea results)
18      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
19    o pkg/seaice:
20      * added computation of saltFlux in seaice_growth;
21        For time being, sea ice salinity is assumed constant
22        contribution of snow flooding to freshening of sea ice is neglected.
23        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
24        defaults to 0.0 in order to maintain backward compatibility.
25        Typical values for SEAICE_salinity are 4 to 10 g/kg.
26      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
27      * added SEAICE_availHeatFrac, which specifies fraction of surface level
28        heat content used to melt or grow ice
29      * commented out cap of HICE: it helps keep ice thinner
30      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
31      * applied OBCS T/S mask to HEFFM sea ice mask
32    
33    checkpoint59d
34    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
35     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
36     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
37    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
38     and change default value of parameter "GM_Small_Number";
39     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
40       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
41       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
42    o pkg/ecco: cost function when applying pkg/smooth to controls
43    o pkg/ctrl: add forcingPrecond run time parameter
44    o pkg/seaice:
45     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
46     - fix bug in metric terms of u-equation in LSR solver (implicit part),
47       changes verification/lab_sea
48     - rearrange implicit part of u-equation in LSR solver to make it easier to
49       read, understand, and debug. This causes changes at the truncation level.
50     - fix (serious) bug in the boundary conditions (sign error in the implicit
51       part) of the LSR solver. Changes all LSR results.
52     - fixed problem with HSNOW initialization to avoid thick snow when AREA
53       is initilized with small values - does not change lab_sea results.
54     - added HsnowFile initialization capability
55    o pkg/smooth: addition to model/src and pkg/ctrl so allow
56     initialization of pkg/smooth and application to control vector
57    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
58    o dependencies: pkg/profiles requires pkg/cal
59    o pkg/profiles:
60     - added option ALLOW_PROFILES_GENERICGRID
61         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
62         that interpolation information (grid points and coefficients) is provided
63         within the netcdf input files.
64         -> sample matlab scripts can be found in MITgcm_contrib/gael
65         that allow you to prepare netcdf input files.
66     - also modified: cleaner include statements, cleaner error print statements,
67       cleaner stops when error, and more tests of the netcdf input files consistency.
68    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
69    o pkg/seaice:
70     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
71       requires a new routine: seaice_diagnostics_fill.F
72     - make sure that seaice does not move if not forced (pressure replacement
73       method, Hibler and Ip, 1995), changes results
74     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
75     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
76       It is turned off by default (=-1.), because it changes the results.
77     - make it possible to read AREA from a file, too.
78    
79    checkpoint59c
80    o add S/R and diagnostics for oceanic mixed-layer depth
81    o move GMRedi call after all vertical mixing schemes (including KPP)
82    o pkg/thsice:
83     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
84      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
85    o pkg/obcs:
86     - bug fix for balance code
87    o pkg/seaice:
88      - allow values of SEAICE_elasticParm > 1
89      - add new parameter SEAICE_evpTauRelax as an alternative
90        to SEAICE_elasticParm
91      - make lsr boundary conditions free slip (by default), changes result
92      - add code for no slip boundary conditions for lsr
93      - set minimum of zeta to zero (and not 4e8) (changes results)
94      - add a cap on AREA after advecting AREA if seaice_growth is not called
95    o change calculation of Visbeck K:
96      - no longer depend on tapering scheme; instead, compute slope (limited
97        by GM_maxSlope). this is equivalent to what was comuted before with
98        clipping or linear tappering.
99      - fix vertical averaging (wrong by 1/2 level)
100      - leave the old version (but will not be maintained) within
101        #ifdef OLD_VISBECK_CALC / #endif
102      - update output of exp. ideal_2D_oce
103    o change error catch in calc_r_star to improve vectorization
104    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
105      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
106    o adjoint:
107      Re-organized adjoint checkpointing according to Matt Mazloff
108      (but with modifs/completions/cleanups)
109      Storing is now bundled into large arrays to optimized I/O
110      (and second step in cleanup of the_main_loop)
111    
112    checkpoint59b
113    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
114      - export/import (between ocean & coupler) fields needed for ocean DIC.
115    o pkg/seaice:
116      - get rid of three more exchanges seaice_calc_viscosities (required
117        different loop boundaries in seaice_lsr and seaice_ocean_stress)
118      - bug fix in seaice_ocean_stress (update of lab_sea required)
119      - reduce loop boundaries to necessary minimum also in seaice_evp
120      - go back to the old way of computing deltaC/Z as the adjoint likes that
121        better
122    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
123      passive tracer to an Age Tracer) + update output.txt
124    o pkg/exf:
125      - implement A-grid / C-grid selection for wind-stress input files.
126      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
127      for now, in exf_bulk_largeyeager04.F only :
128      - change implementation for case where windspeed + 2. components wind-stress
129        are read-in. AND use rhoConstFresh to convert evap.
130    o pkg/seaice:
131      - use correct EXCH_UV for wind-forcing (on A-grid).
132      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
133        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
134    o pkg/exf:
135      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
136      EXF_INTERPOLATION:
137      - merge global_with_exf/code version of exf_interp_read.F
138        to the main code ;
139      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
140        reading the file ; Important: This options needs to be defined to recover
141        previous code.
142        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
143      - no longer loose real*8 precision along the way when using exf_iprec=64.
144    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
145      - change discretisation of evp-solver in order to avoid another exchange
146        (changes lab_sea) and clean up a little
147      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
148        help the adjoint (this also changes the results slightly)
149      - add a few "_d 0" where they had been missing in seaice_evp.F
150      - cleaning up: remove unused seaice_calc_rhs.F
151    o pkg/exf: some cleaning-up:
152      - change various "constants" into runtime parameters
153      - cleaned-up Large&Yeager04 routine which should eventually
154        replace exf_bulkformulae.F (changed names of S/R and CPP)
155        and merged various ALLOW_ATM_WIND options
156     only used with thsice pkg (in thsice_get_exf.F):
157      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
158        which are used when useStabilityFct_overIce=TRUE (= the default)
159      - change default values of ice & snow emissivity and scale downward LW
160        by ice & snow emissivity.
161    o pkg/thsice:
162     fix few little problems, in thsice_calc_thickn.F:
163      - growth vertically (and not laterally) if iceFrac == iceMaskMax
164      - melt only laterally if hIce < hThinIce (as the comments say)
165      and in thsice_extend.F:
166      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
167      - start to form ice as soon as the minimum ice-volume is reachable.
168     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
169      and cpl_aim+ocn
170    o pkg/kpp
171     - move computation of surface related input fields to KPP into a new
172       subroutine kpp_forcing_surf.F
173     - remove wrong (within bi,bj loops) EXCH calls.
174     - little cleaning (add argument myThid in last position, cvs header ...)
175     - for now, fix conservation problem by exchanging KPPviscAz (may not
176       be the best fix)
177    o pkg/seaice
178     - check for inconsistent evp parameter/cpp-flag combination
179     - remove leftover errIO flat for obsolete name list error handling
180    o OpenAD
181     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
182    
183    checkpoint59a
184    o pkg/seaice: some parameter clarifications and a little bit of clean up
185    o pkg/thsice: rename run-time parameters:
186       himin       -> hIceMin
187       himin0      -> hThinIce
188       hihig       -> hThickIce
189       i0          -> i0swFrac
190       transCoef   -> bMeltCoef
191       frac_energy -> fracMelting
192      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
193       with default values (for now) that do not change the results.
194      remove old version of thsice vars advection in pkg/seaice.
195    o in FFIELDS.h:
196      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
197      - make pLoad & sIceLoad always available (but still only used if
198         ATMOSPHERIC_LOADING is #define).
199    o pkg/kpp: replaced _KPP_RL with _RL
200    o bug fixes for vertical diffusivity computations when both KPP and
201        3D diffusivity arrays are used.
202    o pkg/seaice: fix bug in evp solver, while doing that
203      - change (improve?) discretization of stress computations for both
204        cgrid-lsr and evp solver
205      - add a new routine to compute strain rates
206      - the above changes lab_sea results
207      - add no slip conditions for evp solver (off by default), lsr-version
208        may follow
209      - fix exchange for shear at Z-points (does not change lab_sea)
210      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
211        (to force the user to pick a time step since there is not "safe" way
212        of choosing it)
213      - add principal stress diagnostics
214      - rearrange fields for evp a little to avoid having to call a: too many
215        exchanges and b: exchanges for stress trensor components which we do
216        not have.
217      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
218        of evp, complete rewrite for lsr case (latter is does not yet work
219        in all cases)
220    o pkg/kpp: add code to have mixing in shelf ice caverns
221      - add myThid to all kpp routines (long overdue)
222    
223    checkpoint59
224    o pkg/exf:
225      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
226        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
227      - move exf header files from lower_case.h to UPPER_CASE.h ;
228        add missing cvs Header & Name
229      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
230      - add namelist param. selectStressGridPosition, exf_monFreq
231      - retire many _CLIM routines, and remove data.exf_clim
232        + params moved to data.exf
233        + climsst, climsss now handled by exf_set_gen, i.e.
234          climss?period=0 refers to constant field,
235          climss?period=-12 to monthly forcing
236      - split up namelists in data.exf
237    o pkg/seaice:
238      - remove seaice_exch and seaice_exch_uv
239      - remove superfluous exchange of theta
240      - add myThid to seaice_budget_ocean/ice
241      - add new interface for atmospheric wind forcing (C-grid only)
242        + new routine
243        + two new field (taux, tauy for stress over ice)
244        + removed one global field (DAIRN) for C-grid case only
245    o pkg/thsise
246      - 2nd set of modifs for thsice adjoint in conjunction with exf
247    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
248    
249    checkpoint58y_post
250    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
251      vertical diffusivity, similar to that in MOM4; turned on using
252      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
253      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
254    o Added capability for 3D specification of background vertical diffusion
255      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
256      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
257      "data" file that contains the 3D vertical diffusivity coefficients.
258    o ice dynamics (pkg/seaice) with thsice thermodynamics:
259      - add code within pkg thsice to advect & diffuse sea-ice fields
260      similar to (and will replace) what has been added in  seaice_advdiff.F,
261      but: - conserving Mass, Heat & Salt.
262           - better when using non-linear advection scheme (not yet fully tested)
263           - can also be used in atmospheric set-up (for now, only the diffusion).
264    
265    checkpoint58x_post
266    o IO option for global-file compact format:
267      - add options when generating topology (utils/exch2/matlab-topology-generator)
268      - add I/O capability (pkg/mdsio).
269      - adapt utils/matlab/rdmds.m to read this format.
270      for now long-line format not yet supported by pkg/mdsio (& exch2).
271    o shelfice: add a few diagnostics
272    
273    checkpoint58w_post
274    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
275      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
276      (and replace horiVertRatio in NH code).
277      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
278                         and tutorial_plume_on_slope (sensitive to truncation)
279    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
280      directly to drive seaice model (C-grid only)
281    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
282     - reintroduce computation of wind from stress,
283     - compute tau (in exf_bulkformulae.F) from windstress averaged to
284       mass points to avoid tau = 0
285     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
286    o rdmnc.m: make it work with "global" files created with gluemnc
287    o rdmnc.m : some improvements in dealing with singleton dimension
288      (tested on all testreport mnc output files).
289    o genmake2: disable pkg/profiles if netcdf test fails.
290    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
291    o move call to cal_readparms up to make calendar parameters/variable available
292      to all packages
293    
294    checkpoint58v_post
295    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
296      useDynP_inEos_Zc tested.
297    o pkg/exf: changes to properly interpolate/mask/scale initial fields
298    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
299      and portions thereof.  See read_cs.txt for description and examples.
300    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
301      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
302      following the great-circle arc between those 2 points.
303    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
304      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
305  o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in  o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
306   - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)   - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
307   - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)   - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)

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