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revision 1.826 by mlosch, Fri Jun 1 12:57:48 2007 UTC revision 1.882 by mlosch, Thu Sep 27 09:42:27 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/exf: improve vectorization by moving if-statement out of loops
8    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
9    o testreport:
10      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
11        monitor & update offline_exf_seaice exp. output.
12      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
13    o pkg/seaice:
14      - bug fix in the evp solver: boundary conditions were affected be
15        masking of zMax/zMin (changes results)
16      - minor bug fix in boundary conditions in seaice_calc_strainrates
17        (changes results for no_slip)
18      - seaice_lsr.F: make interpolation of eta dependent on boundaries
19      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
20      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
21        stress formulation and no-slip boundary conditions
22    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
23      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
24    o pkg/seaice: a first HSALT time stepping equation has been checked in
25    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
26      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
27      without requiring DO-IF statements
28    o pkg/thsice:
29      use continuous power-law function for partition of energy between lateral
30      melting/freezing and thinning/thickening ; old code using step function
31      still available with #undef THSICE_FRACEN_POWERLAW
32      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
33    o testreport: change AD testing : check against results/output_adm.txt
34      using same scripts as for forward test.
35    
36    checkpoint59g
37    o adjoint testing: in preparation for changing testreport:
38      - output format: cost and grad written on separated lines
39      - ad output results in directory "results" (instead of "results_ad")
40    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
41    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
42    o pkg/ecco: allow user defined cost function contributions
43    o testreport:
44      Allow to choose (per experiment) the list of tested output variables
45       and the main variable (used to issue a pass/FAIL ) ;
46      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
47      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
48      Also modify printing of summary:
49       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
50       b) echo the list of tested variables in the individual summary.txt of
51          each experiment.
52    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
53      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
54      (but still depend on the tile decompostion of the domain).
55    o pkg/seaice: change a discretization detail to make the B-grid code
56      "more symmetric". This change is likely to remove all "ridges/leads" that
57      where quasi-aligned with the grid in B-grid solutions. It may also be
58      the solution to the stress coupling issues with the B-grid.
59    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
60      remove .cvsignore from input dir. (since testreport no longer run here).
61    o pkg/thsice:
62     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
63     - fix reshaping of sea-ice just after advection:
64       melt all the ice only if ice-volume is too small.
65     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
66       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
67     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
68    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
69      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
70    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
71      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
72      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
73      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
74      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
75      -> update output.txt
76    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
77     this affects truncation error: -> update output.txt of exp:
78      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
79      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
80    
81    checkpoint59f
82    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
83    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
84      a bounded range (in forward mode)
85    o pkg/ecco, ctrl, autodiff and mom_common:
86     internal parameter controls, completements of implementations
87    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
88    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
89      (not seem any difference in testing results).
90    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
91       at face corners.
92    o pkg/generic_advdiff:
93     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
94      loop range indices for computing vertical advection tendency
95      and do the calculation in the interior only (no overlap) ;
96      for now, only implemented for SOM advection (to save CPU time).
97     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
98    o exch2 adjoint
99      First set of changes:
100      - add exch2 hand-written adjoint templates
101      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
102        This will require cleanup in pkg/autodiff/*.F
103        (changed routines currently kept separate in verif. code/)
104      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
105        that used to hide exch2 or cubed-sphere specific code
106        (commented via 'cph-exch2')
107    o pkg/seaice
108      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
109    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
110       output of global_ocean.cs32x15.thsice .
111    
112    checkpoint59e
113    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
114      for B-grid vector (not yet tested) and C-grid vector (<- only used
115      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
116    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
117      (#ifdef ALLOW_SALT_PLUME)
118    o gather_2d/scatter_2d: removed halo regions
119    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
120      scheme and the corresponding test case (under front_relax dir). For now,
121      only available with Skew-flux form and not yet tested in realistic set-up.
122      adjoint: store directives updated, but gradient checks deteriorated,
123      so maybe GM/Redi adjoint is now broken.
124    o seaice adjoint
125      * add AREA, HEFF, HSNOW as control variable
126        (should not change lab_sea results)
127      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
128    o pkg/seaice:
129      * added computation of saltFlux in seaice_growth;
130        For time being, sea ice salinity is assumed constant
131        contribution of snow flooding to freshening of sea ice is neglected.
132        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
133        defaults to 0.0 in order to maintain backward compatibility.
134        Typical values for SEAICE_salinity are 4 to 10 g/kg.
135      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
136      * added SEAICE_availHeatFrac, which specifies fraction of surface level
137        heat content used to melt or grow ice
138      * commented out cap of HICE: it helps keep ice thinner
139      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
140      * applied OBCS T/S mask to HEFFM sea ice mask
141    
142    checkpoint59d
143    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
144     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
145     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
146    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
147     and change default value of parameter "GM_Small_Number";
148     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
149       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
150       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
151    o pkg/ecco: cost function when applying pkg/smooth to controls
152    o pkg/ctrl: add forcingPrecond run time parameter
153    o pkg/seaice:
154     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
155     - fix bug in metric terms of u-equation in LSR solver (implicit part),
156       changes verification/lab_sea
157     - rearrange implicit part of u-equation in LSR solver to make it easier to
158       read, understand, and debug. This causes changes at the truncation level.
159     - fix (serious) bug in the boundary conditions (sign error in the implicit
160       part) of the LSR solver. Changes all LSR results.
161     - fixed problem with HSNOW initialization to avoid thick snow when AREA
162       is initilized with small values - does not change lab_sea results.
163     - added HsnowFile initialization capability
164    o pkg/smooth: addition to model/src and pkg/ctrl so allow
165     initialization of pkg/smooth and application to control vector
166    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
167    o dependencies: pkg/profiles requires pkg/cal
168    o pkg/profiles:
169     - added option ALLOW_PROFILES_GENERICGRID
170         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
171         that interpolation information (grid points and coefficients) is provided
172         within the netcdf input files.
173         -> sample matlab scripts can be found in MITgcm_contrib/gael
174         that allow you to prepare netcdf input files.
175     - also modified: cleaner include statements, cleaner error print statements,
176       cleaner stops when error, and more tests of the netcdf input files consistency.
177    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
178    o pkg/seaice:
179     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
180       requires a new routine: seaice_diagnostics_fill.F
181     - make sure that seaice does not move if not forced (pressure replacement
182       method, Hibler and Ip, 1995), changes results
183     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
184     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
185       It is turned off by default (=-1.), because it changes the results.
186     - make it possible to read AREA from a file, too.
187    
188    checkpoint59c
189    o add S/R and diagnostics for oceanic mixed-layer depth
190    o move GMRedi call after all vertical mixing schemes (including KPP)
191    o pkg/thsice:
192     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
193      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
194  o pkg/obcs:  o pkg/obcs:
195   - bug fix for balance code   - bug fix for balance code
196  o pkg/seaice:  o pkg/seaice:
# Line 18  o change calculation of Visbeck K: Line 205  o change calculation of Visbeck K:
205    - no longer depend on tapering scheme; instead, compute slope (limited    - no longer depend on tapering scheme; instead, compute slope (limited
206      by GM_maxSlope). this is equivalent to what was comuted before with      by GM_maxSlope). this is equivalent to what was comuted before with
207      clipping or linear tappering.      clipping or linear tappering.
208    - fix vertical averaging (wrong by 1 level)    - fix vertical averaging (wrong by 1/2 level)
209    - leave the old version (but will not be maintained) within    - leave the old version (but will not be maintained) within
210      #ifdef OLD_VISBECK_CALC / #endif      #ifdef OLD_VISBECK_CALC / #endif
211      - update output of exp. ideal_2D_oce
212  o change error catch in calc_r_star to improve vectorization  o change error catch in calc_r_star to improve vectorization
213  o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and  o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
214    add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).    add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
215    o adjoint:
216      Re-organized adjoint checkpointing according to Matt Mazloff
217      (but with modifs/completions/cleanups)
218      Storing is now bundled into large arrays to optimized I/O
219      (and second step in cleanup of the_main_loop)
220    
221  checkpoint59b  checkpoint59b
222  o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):  o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
# Line 77  o pkg/exf: some cleaning-up: Line 270  o pkg/exf: some cleaning-up:
270  o pkg/thsice:  o pkg/thsice:
271   fix few little problems, in thsice_calc_thickn.F:   fix few little problems, in thsice_calc_thickn.F:
272    - growth vertically (and not laterally) if iceFrac == iceMaskMax    - growth vertically (and not laterally) if iceFrac == iceMaskMax
273    - melt laterally only if hIce < hThinIce (as the comments say)    - melt only laterally if hIce < hThinIce (as the comments say)
274    and in thsice_extend.F:    and in thsice_extend.F:
275    - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)    - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
276    - start to form ice as soon as the minimum ice-volume is reachable.    - start to form ice as soon as the minimum ice-volume is reachable.

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