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revision 1.770 by jmc, Thu Feb 8 00:12:37 2007 UTC revision 1.840 by dimitri, Wed Jun 20 14:08:22 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 pkg/seaice:
8     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
9     - fix bug in metric terms of u-equation in LSR solver (implicit part),
10       changes verification/lab_sea
11     - rearrange implicit part of u-equation in LSR solver to make it easier to
12       read, understand, and debug. This causes changes at the truncation level.
13     - fix (serious) bug in the boundary conditions (sign error in the implicit
14       part) of the LSR solver. Changes all LSR results.
15     - fixed problem with HSNOW initialization to avoid thick snow when AREA
16       is initilized with small values - does not change lab_sea results.
17     - added HsnowFile initialization capability
18    o pkg/smooth: addition to model/src and pkg/ctrl so allow
19     initialization of pkg/smooth and application to control vector
20    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
21    o dependencies: pkg/profiles requires pkg/cal
22    o pkg/profiles:
23     - added option ALLOW_PROFILES_GENERICGRID
24         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
25         that interpolation information (grid points and coefficients) is provided
26         within the netcdf input files.
27         -> sample matlab scripts can be found in MITgcm_contrib/gael
28         that allow you to prepare netcdf input files.
29     - also modified: cleaner include statements, cleaner error print statements,
30       cleaner stops when error, and more tests of the netcdf input files consistency.
31    
32    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
33    o pkg/seaice:
34     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
35       requires a new routine: seaice_diagnostics_fill.F
36     - make sure that seaice does not move if not forced (pressure replacement
37       method, Hibler and Ip, 1995), changes results
38     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
39     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
40       It is turned off by default (=-1.), because it changes the results.
41     - make it possible to read AREA from a file, too.
42    
43    checkpoint59c
44    o add S/R and diagnostics for oceanic mixed-layer depth
45    o move GMRedi call after all vertical mixing schemes (including KPP)
46    o pkg/thsice:
47     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
48      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
49    o pkg/obcs:
50     - bug fix for balance code
51    o pkg/seaice:
52      - allow values of SEAICE_elasticParm > 1
53      - add new parameter SEAICE_evpTauRelax as an alternative
54        to SEAICE_elasticParm
55      - make lsr boundary conditions free slip (by default), changes result
56      - add code for no slip boundary conditions for lsr
57      - set minimum of zeta to zero (and not 4e8) (changes results)
58      - add a cap on AREA after advecting AREA if seaice_growth is not called
59    o change calculation of Visbeck K:
60      - no longer depend on tapering scheme; instead, compute slope (limited
61        by GM_maxSlope). this is equivalent to what was comuted before with
62        clipping or linear tappering.
63      - fix vertical averaging (wrong by 1/2 level)
64      - leave the old version (but will not be maintained) within
65        #ifdef OLD_VISBECK_CALC / #endif
66      - update output of exp. ideal_2D_oce
67    o change error catch in calc_r_star to improve vectorization
68    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
69      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
70    o adjoint:
71      Re-organized adjoint checkpointing according to Matt Mazloff
72      (but with modifs/completions/cleanups)
73      Storing is now bundled into large arrays to optimized I/O
74      (and second step in cleanup of the_main_loop)
75    
76    checkpoint59b
77    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
78      - export/import (between ocean & coupler) fields needed for ocean DIC.
79    o pkg/seaice:
80      - get rid of three more exchanges seaice_calc_viscosities (required
81        different loop boundaries in seaice_lsr and seaice_ocean_stress)
82      - bug fix in seaice_ocean_stress (update of lab_sea required)
83      - reduce loop boundaries to necessary minimum also in seaice_evp
84      - go back to the old way of computing deltaC/Z as the adjoint likes that
85        better
86    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
87      passive tracer to an Age Tracer) + update output.txt
88    o pkg/exf:
89      - implement A-grid / C-grid selection for wind-stress input files.
90      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
91      for now, in exf_bulk_largeyeager04.F only :
92      - change implementation for case where windspeed + 2. components wind-stress
93        are read-in. AND use rhoConstFresh to convert evap.
94    o pkg/seaice:
95      - use correct EXCH_UV for wind-forcing (on A-grid).
96      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
97        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
98    o pkg/exf:
99      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
100      EXF_INTERPOLATION:
101      - merge global_with_exf/code version of exf_interp_read.F
102        to the main code ;
103      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
104        reading the file ; Important: This options needs to be defined to recover
105        previous code.
106        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
107      - no longer loose real*8 precision along the way when using exf_iprec=64.
108    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
109      - change discretisation of evp-solver in order to avoid another exchange
110        (changes lab_sea) and clean up a little
111      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
112        help the adjoint (this also changes the results slightly)
113      - add a few "_d 0" where they had been missing in seaice_evp.F
114      - cleaning up: remove unused seaice_calc_rhs.F
115    o pkg/exf: some cleaning-up:
116      - change various "constants" into runtime parameters
117      - cleaned-up Large&Yeager04 routine which should eventually
118        replace exf_bulkformulae.F (changed names of S/R and CPP)
119        and merged various ALLOW_ATM_WIND options
120     only used with thsice pkg (in thsice_get_exf.F):
121      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
122        which are used when useStabilityFct_overIce=TRUE (= the default)
123      - change default values of ice & snow emissivity and scale downward LW
124        by ice & snow emissivity.
125    o pkg/thsice:
126     fix few little problems, in thsice_calc_thickn.F:
127      - growth vertically (and not laterally) if iceFrac == iceMaskMax
128      - melt only laterally if hIce < hThinIce (as the comments say)
129      and in thsice_extend.F:
130      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
131      - start to form ice as soon as the minimum ice-volume is reachable.
132     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
133      and cpl_aim+ocn
134    o pkg/kpp
135     - move computation of surface related input fields to KPP into a new
136       subroutine kpp_forcing_surf.F
137     - remove wrong (within bi,bj loops) EXCH calls.
138     - little cleaning (add argument myThid in last position, cvs header ...)
139     - for now, fix conservation problem by exchanging KPPviscAz (may not
140       be the best fix)
141    o pkg/seaice
142     - check for inconsistent evp parameter/cpp-flag combination
143     - remove leftover errIO flat for obsolete name list error handling
144    o OpenAD
145     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
146    
147    checkpoint59a
148    o pkg/seaice: some parameter clarifications and a little bit of clean up
149    o pkg/thsice: rename run-time parameters:
150       himin       -> hIceMin
151       himin0      -> hThinIce
152       hihig       -> hThickIce
153       i0          -> i0swFrac
154       transCoef   -> bMeltCoef
155       frac_energy -> fracMelting
156      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
157       with default values (for now) that do not change the results.
158      remove old version of thsice vars advection in pkg/seaice.
159    o in FFIELDS.h:
160      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
161      - make pLoad & sIceLoad always available (but still only used if
162         ATMOSPHERIC_LOADING is #define).
163    o pkg/kpp: replaced _KPP_RL with _RL
164    o bug fixes for vertical diffusivity computations when both KPP and
165        3D diffusivity arrays are used.
166    o pkg/seaice: fix bug in evp solver, while doing that
167      - change (improve?) discretization of stress computations for both
168        cgrid-lsr and evp solver
169      - add a new routine to compute strain rates
170      - the above changes lab_sea results
171      - add no slip conditions for evp solver (off by default), lsr-version
172        may follow
173      - fix exchange for shear at Z-points (does not change lab_sea)
174      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
175        (to force the user to pick a time step since there is not "safe" way
176        of choosing it)
177      - add principal stress diagnostics
178      - rearrange fields for evp a little to avoid having to call a: too many
179        exchanges and b: exchanges for stress trensor components which we do
180        not have.
181      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
182        of evp, complete rewrite for lsr case (latter is does not yet work
183        in all cases)
184    o pkg/kpp: add code to have mixing in shelf ice caverns
185      - add myThid to all kpp routines (long overdue)
186    
187    checkpoint59
188    o pkg/exf:
189      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
190        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
191      - move exf header files from lower_case.h to UPPER_CASE.h ;
192        add missing cvs Header & Name
193      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
194      - add namelist param. selectStressGridPosition, exf_monFreq
195      - retire many _CLIM routines, and remove data.exf_clim
196        + params moved to data.exf
197        + climsst, climsss now handled by exf_set_gen, i.e.
198          climss?period=0 refers to constant field,
199          climss?period=-12 to monthly forcing
200      - split up namelists in data.exf
201    o pkg/seaice:
202      - remove seaice_exch and seaice_exch_uv
203      - remove superfluous exchange of theta
204      - add myThid to seaice_budget_ocean/ice
205      - add new interface for atmospheric wind forcing (C-grid only)
206        + new routine
207        + two new field (taux, tauy for stress over ice)
208        + removed one global field (DAIRN) for C-grid case only
209    o pkg/thsise
210      - 2nd set of modifs for thsice adjoint in conjunction with exf
211    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
212    
213    checkpoint58y_post
214    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
215      vertical diffusivity, similar to that in MOM4; turned on using
216      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
217      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
218    o Added capability for 3D specification of background vertical diffusion
219      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
220      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
221      "data" file that contains the 3D vertical diffusivity coefficients.
222    o ice dynamics (pkg/seaice) with thsice thermodynamics:
223      - add code within pkg thsice to advect & diffuse sea-ice fields
224      similar to (and will replace) what has been added in  seaice_advdiff.F,
225      but: - conserving Mass, Heat & Salt.
226           - better when using non-linear advection scheme (not yet fully tested)
227           - can also be used in atmospheric set-up (for now, only the diffusion).
228    
229    checkpoint58x_post
230    o IO option for global-file compact format:
231      - add options when generating topology (utils/exch2/matlab-topology-generator)
232      - add I/O capability (pkg/mdsio).
233      - adapt utils/matlab/rdmds.m to read this format.
234      for now long-line format not yet supported by pkg/mdsio (& exch2).
235    o shelfice: add a few diagnostics
236    
237    checkpoint58w_post
238    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
239      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
240      (and replace horiVertRatio in NH code).
241      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
242                         and tutorial_plume_on_slope (sensitive to truncation)
243    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
244      directly to drive seaice model (C-grid only)
245    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
246     - reintroduce computation of wind from stress,
247     - compute tau (in exf_bulkformulae.F) from windstress averaged to
248       mass points to avoid tau = 0
249     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
250    o rdmnc.m: make it work with "global" files created with gluemnc
251    o rdmnc.m : some improvements in dealing with singleton dimension
252      (tested on all testreport mnc output files).
253    o genmake2: disable pkg/profiles if netcdf test fails.
254    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
255    o move call to cal_readparms up to make calendar parameters/variable available
256      to all packages
257    
258  checkpoint58v_post  checkpoint58v_post
259  o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get  o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
260    useDynP_inEos_Zc tested.    useDynP_inEos_Zc tested.

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