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revision 1.802 by jmc, Mon Apr 30 16:03:40 2007 UTC revision 1.867 by mlosch, Fri Aug 31 14:06:57 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: change a discretization detail to make the B-grid code
8      "more symmetric". This change is likely to remove all "ridges/leads" that
9      where quasi-aligned with the grid in B-grid solutions. It may also be
10      the solution to the stress coupling issues with the B-grid.
11    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
12      remove .cvsignore from input dir. (since testreport no longer run here).
13    o pkg/thsice:
14     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
15     - fix reshaping of sea-ice just after advection:
16       melt all the ice only if ice-volume is too small.
17     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
18       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
19     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
20    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
21      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
22    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
23      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
24      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
25      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
26      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
27      -> update output.txt
28    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
29     this affects truncation error: -> update output.txt of exp:
30      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
31      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
32    
33    checkpoint59f
34    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
35    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
36      a bounded range (in forward mode)
37    o pkg/ecco, ctrl, autodiff and mom_common:
38     internal parameter controls, completements of implementations
39    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
40    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
41      (not seem any difference in testing results).
42    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
43       at face corners.
44    o pkg/generic_advdiff:
45     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
46      loop range indices for computing vertical advection tendency
47      and do the calculation in the interior only (no overlap) ;
48      for now, only implemented for SOM advection (to save CPU time).
49     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
50    o exch2 adjoint
51      First set of changes:
52      - add exch2 hand-written adjoint templates
53      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
54        This will require cleanup in pkg/autodiff/*.F
55        (changed routines currently kept separate in verif. code/)
56      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
57        that used to hide exch2 or cubed-sphere specific code
58        (commented via 'cph-exch2')
59    o pkg/seaice
60      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
61    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
62       output of global_ocean.cs32x15.thsice .
63    
64    checkpoint59e
65    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
66      for B-grid vector (not yet tested) and C-grid vector (<- only used
67      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
68    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
69      (#ifdef ALLOW_SALT_PLUME)
70    o gather_2d/scatter_2d: removed halo regions
71    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
72      scheme and the corresponding test case (under front_relax dir). For now,
73      only available with Skew-flux form and not yet tested in realistic set-up.
74      adjoint: store directives updated, but gradient checks deteriorated,
75      so maybe GM/Redi adjoint is now broken.
76    o seaice adjoint
77      * add AREA, HEFF, HSNOW as control variable
78        (should not change lab_sea results)
79      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
80    o pkg/seaice:
81      * added computation of saltFlux in seaice_growth;
82        For time being, sea ice salinity is assumed constant
83        contribution of snow flooding to freshening of sea ice is neglected.
84        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
85        defaults to 0.0 in order to maintain backward compatibility.
86        Typical values for SEAICE_salinity are 4 to 10 g/kg.
87      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
88      * added SEAICE_availHeatFrac, which specifies fraction of surface level
89        heat content used to melt or grow ice
90      * commented out cap of HICE: it helps keep ice thinner
91      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
92      * applied OBCS T/S mask to HEFFM sea ice mask
93    
94    checkpoint59d
95    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
96     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
97     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
98    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
99     and change default value of parameter "GM_Small_Number";
100     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
101       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
102       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
103    o pkg/ecco: cost function when applying pkg/smooth to controls
104    o pkg/ctrl: add forcingPrecond run time parameter
105    o pkg/seaice:
106     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
107     - fix bug in metric terms of u-equation in LSR solver (implicit part),
108       changes verification/lab_sea
109     - rearrange implicit part of u-equation in LSR solver to make it easier to
110       read, understand, and debug. This causes changes at the truncation level.
111     - fix (serious) bug in the boundary conditions (sign error in the implicit
112       part) of the LSR solver. Changes all LSR results.
113     - fixed problem with HSNOW initialization to avoid thick snow when AREA
114       is initilized with small values - does not change lab_sea results.
115     - added HsnowFile initialization capability
116    o pkg/smooth: addition to model/src and pkg/ctrl so allow
117     initialization of pkg/smooth and application to control vector
118    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
119    o dependencies: pkg/profiles requires pkg/cal
120    o pkg/profiles:
121     - added option ALLOW_PROFILES_GENERICGRID
122         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
123         that interpolation information (grid points and coefficients) is provided
124         within the netcdf input files.
125         -> sample matlab scripts can be found in MITgcm_contrib/gael
126         that allow you to prepare netcdf input files.
127     - also modified: cleaner include statements, cleaner error print statements,
128       cleaner stops when error, and more tests of the netcdf input files consistency.
129    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
130    o pkg/seaice:
131     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
132       requires a new routine: seaice_diagnostics_fill.F
133     - make sure that seaice does not move if not forced (pressure replacement
134       method, Hibler and Ip, 1995), changes results
135     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
136     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
137       It is turned off by default (=-1.), because it changes the results.
138     - make it possible to read AREA from a file, too.
139    
140    checkpoint59c
141    o add S/R and diagnostics for oceanic mixed-layer depth
142    o move GMRedi call after all vertical mixing schemes (including KPP)
143    o pkg/thsice:
144     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
145      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
146    o pkg/obcs:
147     - bug fix for balance code
148    o pkg/seaice:
149      - allow values of SEAICE_elasticParm > 1
150      - add new parameter SEAICE_evpTauRelax as an alternative
151        to SEAICE_elasticParm
152      - make lsr boundary conditions free slip (by default), changes result
153      - add code for no slip boundary conditions for lsr
154      - set minimum of zeta to zero (and not 4e8) (changes results)
155      - add a cap on AREA after advecting AREA if seaice_growth is not called
156    o change calculation of Visbeck K:
157      - no longer depend on tapering scheme; instead, compute slope (limited
158        by GM_maxSlope). this is equivalent to what was comuted before with
159        clipping or linear tappering.
160      - fix vertical averaging (wrong by 1/2 level)
161      - leave the old version (but will not be maintained) within
162        #ifdef OLD_VISBECK_CALC / #endif
163      - update output of exp. ideal_2D_oce
164    o change error catch in calc_r_star to improve vectorization
165    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
166      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
167    o adjoint:
168      Re-organized adjoint checkpointing according to Matt Mazloff
169      (but with modifs/completions/cleanups)
170      Storing is now bundled into large arrays to optimized I/O
171      (and second step in cleanup of the_main_loop)
172    
173    checkpoint59b
174    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
175      - export/import (between ocean & coupler) fields needed for ocean DIC.
176    o pkg/seaice:
177      - get rid of three more exchanges seaice_calc_viscosities (required
178        different loop boundaries in seaice_lsr and seaice_ocean_stress)
179      - bug fix in seaice_ocean_stress (update of lab_sea required)
180      - reduce loop boundaries to necessary minimum also in seaice_evp
181      - go back to the old way of computing deltaC/Z as the adjoint likes that
182        better
183    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
184      passive tracer to an Age Tracer) + update output.txt
185    o pkg/exf:
186      - implement A-grid / C-grid selection for wind-stress input files.
187      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
188      for now, in exf_bulk_largeyeager04.F only :
189      - change implementation for case where windspeed + 2. components wind-stress
190        are read-in. AND use rhoConstFresh to convert evap.
191    o pkg/seaice:
192      - use correct EXCH_UV for wind-forcing (on A-grid).
193      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
194        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
195    o pkg/exf:
196      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
197      EXF_INTERPOLATION:
198      - merge global_with_exf/code version of exf_interp_read.F
199        to the main code ;
200      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
201        reading the file ; Important: This options needs to be defined to recover
202        previous code.
203        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
204      - no longer loose real*8 precision along the way when using exf_iprec=64.
205    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
206      - change discretisation of evp-solver in order to avoid another exchange
207        (changes lab_sea) and clean up a little
208      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
209        help the adjoint (this also changes the results slightly)
210      - add a few "_d 0" where they had been missing in seaice_evp.F
211      - cleaning up: remove unused seaice_calc_rhs.F
212    o pkg/exf: some cleaning-up:
213      - change various "constants" into runtime parameters
214      - cleaned-up Large&Yeager04 routine which should eventually
215        replace exf_bulkformulae.F (changed names of S/R and CPP)
216        and merged various ALLOW_ATM_WIND options
217     only used with thsice pkg (in thsice_get_exf.F):
218      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
219        which are used when useStabilityFct_overIce=TRUE (= the default)
220      - change default values of ice & snow emissivity and scale downward LW
221        by ice & snow emissivity.
222    o pkg/thsice:
223     fix few little problems, in thsice_calc_thickn.F:
224      - growth vertically (and not laterally) if iceFrac == iceMaskMax
225      - melt only laterally if hIce < hThinIce (as the comments say)
226      and in thsice_extend.F:
227      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
228      - start to form ice as soon as the minimum ice-volume is reachable.
229     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
230      and cpl_aim+ocn
231    o pkg/kpp
232     - move computation of surface related input fields to KPP into a new
233       subroutine kpp_forcing_surf.F
234     - remove wrong (within bi,bj loops) EXCH calls.
235     - little cleaning (add argument myThid in last position, cvs header ...)
236     - for now, fix conservation problem by exchanging KPPviscAz (may not
237       be the best fix)
238    o pkg/seaice
239     - check for inconsistent evp parameter/cpp-flag combination
240     - remove leftover errIO flat for obsolete name list error handling
241    o OpenAD
242     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
243    
244    checkpoint59a
245    o pkg/seaice: some parameter clarifications and a little bit of clean up
246  o pkg/thsice: rename run-time parameters:  o pkg/thsice: rename run-time parameters:
247     himin       -> hIceMin     himin       -> hIceMin
248     himin0      -> hThinIce     himin0      -> hThinIce
# Line 40  o pkg/seaice: fix bug in evp solver, whi Line 279  o pkg/seaice: fix bug in evp solver, whi
279      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
280      in all cases)      in all cases)
281  o pkg/kpp: add code to have mixing in shelf ice caverns  o pkg/kpp: add code to have mixing in shelf ice caverns
282      - add myThid to all kpp routines (long overdue)
283    
284  checkpoint59  checkpoint59
285  o pkg/exf:  o pkg/exf:

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