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revision 1.815 by jmc, Mon May 14 20:44:45 2007 UTC revision 1.899 by dimitri, Fri Oct 26 02:00:47 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 new read/write pickup version:
8      - for now, only implemented for main (mdsio) pickup file.
9      - write out only what is needed to restart; merge pickup_nh , pickup_ph
10        and main pickup together.
11      - read meta file; read only what is needed to restart; stop if a field
12        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
13        if it make sense (even if the restart is not perfect).
14      - if no meta file, assume that pickup to read corresponds exactly to
15        a pickup that would currently be written.
16      - read pickup written in the old format (until checkpoint59i) if it
17        recognizes an old meta file (no field-list).
18      - add a meta file in exp. which starts from a pickup: 2 cases:
19        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
20         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
21        b) a meta file describing the content of the associated pickup file
22         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
23    o pkg/mdsio & pkg/rw:
24      - new routine to read a meta file ; new set of routine to read
25        Multiple-fields file (with meta file).
26    o added open boundary conditions capability for seaice
27        HSNOW, HSALT, UICE, and VICE
28    
29    checkpoint59i
30    o adjoint:
31      * fix multiDimAdvection adjoint
32        (partial recomputation problem by TAF for fVerT(:,:,kDown)
33        and comlev1 size definition (maxpass vs. max. number of tracers)
34      * verification/global_ocean.90x45x15 adjoint now tests
35        NLFS and multiDimAdvection using DST3 (=30)
36      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
37    o pkg/kpp: add "_d 0" to real constant (if missing);
38      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
39      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
40    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
41      for internal parameters related to restart process (formerly from PARAMS.h)
42      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
43    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
44      as argument. (only atm2d & obcs write_pickup have not yet been updated)
45    o pkg/monitor:
46      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
47      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
48      - account for deep Atmosphere factor and density factor (anelastic)
49    o added open boundary conditions capability for seaice HEFF and AREA
50    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
51      thermodynamics
52      - requires a little reorganization, which affects the testreport results
53        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
54        so that now the conservative form is tested
55      - add a few comments
56    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
57    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
58    o add new diagnostics to seaice: advective, diffusive fluxes (only for
59      multidim-advection, for scheme 2 they are not filled) and transports,
60      thermodynamic growth rates
61    o change units of EmPmR (inside the code) from m/s to kg/m2/s (mass flux) but
62      leave input file unchanged. Affects results @ truncation level (cg2d match)
63      and update output of experiments: lab_sea(6), global_ocean.90x40x15(10),
64      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
65      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
66      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
67    
68    checkpoint59h
69    o pkg/exf:
70      - improve vectorization by moving if-statement out of loops in
71        exf_mapfields, exf_radiation
72      - exf_bulkformulae.F: introduce 2D fields and vectorize code
73    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
74    o testreport:
75      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
76        monitor & update offline_exf_seaice exp. output.
77      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
78    o pkg/seaice:
79      - bug fix in the evp solver: boundary conditions were affected be
80        masking of zMax/zMin (changes results)
81      - minor bug fix in boundary conditions in seaice_calc_strainrates
82        (changes results for no_slip)
83      - seaice_lsr.F: make interpolation of eta dependent on boundaries
84      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
85      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
86        stress formulation and no-slip boundary conditions
87    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
88      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
89    o pkg/seaice: a first HSALT time stepping equation has been checked in
90    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
91      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
92      without requiring DO-IF statements
93    o pkg/thsice:
94      use continuous power-law function for partition of energy between lateral
95      melting/freezing and thinning/thickening ; old code using step function
96      still available with #undef THSICE_FRACEN_POWERLAW
97      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
98    o testreport: change AD testing : check against results/output_adm.txt
99      using same scripts as for forward test.
100    
101    checkpoint59g
102    o adjoint testing: in preparation for changing testreport:
103      - output format: cost and grad written on separated lines
104      - ad output results in directory "results" (instead of "results_ad")
105    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
106    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
107    o pkg/ecco: allow user defined cost function contributions
108    o testreport:
109      Allow to choose (per experiment) the list of tested output variables
110       and the main variable (used to issue a pass/FAIL ) ;
111      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
112      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
113      Also modify printing of summary:
114       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
115       b) echo the list of tested variables in the individual summary.txt of
116          each experiment.
117    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
118      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
119      (but still depend on the tile decompostion of the domain).
120    o pkg/seaice: change a discretization detail to make the B-grid code
121      "more symmetric". This change is likely to remove all "ridges/leads" that
122      where quasi-aligned with the grid in B-grid solutions. It may also be
123      the solution to the stress coupling issues with the B-grid.
124    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
125      remove .cvsignore from input dir. (since testreport no longer run here).
126    o pkg/thsice:
127     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
128     - fix reshaping of sea-ice just after advection:
129       melt all the ice only if ice-volume is too small.
130     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
131       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
132     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
133    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
134      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
135    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
136      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
137      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
138      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
139      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
140      -> update output.txt
141    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
142     this affects truncation error: -> update output.txt of exp:
143      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
144      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
145    
146    checkpoint59f
147    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
148    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
149      a bounded range (in forward mode)
150    o pkg/ecco, ctrl, autodiff and mom_common:
151     internal parameter controls, completements of implementations
152    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
153    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
154      (not seem any difference in testing results).
155    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
156       at face corners.
157    o pkg/generic_advdiff:
158     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
159      loop range indices for computing vertical advection tendency
160      and do the calculation in the interior only (no overlap) ;
161      for now, only implemented for SOM advection (to save CPU time).
162     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
163    o exch2 adjoint
164      First set of changes:
165      - add exch2 hand-written adjoint templates
166      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
167        This will require cleanup in pkg/autodiff/*.F
168        (changed routines currently kept separate in verif. code/)
169      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
170        that used to hide exch2 or cubed-sphere specific code
171        (commented via 'cph-exch2')
172    o pkg/seaice
173      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
174    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
175       output of global_ocean.cs32x15.thsice .
176    
177    checkpoint59e
178    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
179      for B-grid vector (not yet tested) and C-grid vector (<- only used
180      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
181    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
182      (#ifdef ALLOW_SALT_PLUME)
183    o gather_2d/scatter_2d: removed halo regions
184    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
185      scheme and the corresponding test case (under front_relax dir). For now,
186      only available with Skew-flux form and not yet tested in realistic set-up.
187      adjoint: store directives updated, but gradient checks deteriorated,
188      so maybe GM/Redi adjoint is now broken.
189    o seaice adjoint
190      * add AREA, HEFF, HSNOW as control variable
191        (should not change lab_sea results)
192      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
193    o pkg/seaice:
194      * added computation of saltFlux in seaice_growth;
195        For time being, sea ice salinity is assumed constant
196        contribution of snow flooding to freshening of sea ice is neglected.
197        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
198        defaults to 0.0 in order to maintain backward compatibility.
199        Typical values for SEAICE_salinity are 4 to 10 g/kg.
200      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
201      * added SEAICE_availHeatFrac, which specifies fraction of surface level
202        heat content used to melt or grow ice
203      * commented out cap of HICE: it helps keep ice thinner
204      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
205      * applied OBCS T/S mask to HEFFM sea ice mask
206    
207    checkpoint59d
208    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
209     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
210     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
211    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
212     and change default value of parameter "GM_Small_Number";
213     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
214       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
215       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
216    o pkg/ecco: cost function when applying pkg/smooth to controls
217    o pkg/ctrl: add forcingPrecond run time parameter
218    o pkg/seaice:
219     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
220     - fix bug in metric terms of u-equation in LSR solver (implicit part),
221       changes verification/lab_sea
222     - rearrange implicit part of u-equation in LSR solver to make it easier to
223       read, understand, and debug. This causes changes at the truncation level.
224     - fix (serious) bug in the boundary conditions (sign error in the implicit
225       part) of the LSR solver. Changes all LSR results.
226     - fixed problem with HSNOW initialization to avoid thick snow when AREA
227       is initilized with small values - does not change lab_sea results.
228     - added HsnowFile initialization capability
229    o pkg/smooth: addition to model/src and pkg/ctrl so allow
230     initialization of pkg/smooth and application to control vector
231    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
232    o dependencies: pkg/profiles requires pkg/cal
233    o pkg/profiles:
234     - added option ALLOW_PROFILES_GENERICGRID
235         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
236         that interpolation information (grid points and coefficients) is provided
237         within the netcdf input files.
238         -> sample matlab scripts can be found in MITgcm_contrib/gael
239         that allow you to prepare netcdf input files.
240     - also modified: cleaner include statements, cleaner error print statements,
241       cleaner stops when error, and more tests of the netcdf input files consistency.
242    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
243    o pkg/seaice:
244     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
245       requires a new routine: seaice_diagnostics_fill.F
246     - make sure that seaice does not move if not forced (pressure replacement
247       method, Hibler and Ip, 1995), changes results
248     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
249     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
250       It is turned off by default (=-1.), because it changes the results.
251     - make it possible to read AREA from a file, too.
252    
253    checkpoint59c
254    o add S/R and diagnostics for oceanic mixed-layer depth
255    o move GMRedi call after all vertical mixing schemes (including KPP)
256    o pkg/thsice:
257     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
258      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
259    o pkg/obcs:
260     - bug fix for balance code
261    o pkg/seaice:
262      - allow values of SEAICE_elasticParm > 1
263      - add new parameter SEAICE_evpTauRelax as an alternative
264        to SEAICE_elasticParm
265      - make lsr boundary conditions free slip (by default), changes result
266      - add code for no slip boundary conditions for lsr
267      - set minimum of zeta to zero (and not 4e8) (changes results)
268      - add a cap on AREA after advecting AREA if seaice_growth is not called
269    o change calculation of Visbeck K:
270      - no longer depend on tapering scheme; instead, compute slope (limited
271        by GM_maxSlope). this is equivalent to what was comuted before with
272        clipping or linear tappering.
273      - fix vertical averaging (wrong by 1/2 level)
274      - leave the old version (but will not be maintained) within
275        #ifdef OLD_VISBECK_CALC / #endif
276      - update output of exp. ideal_2D_oce
277    o change error catch in calc_r_star to improve vectorization
278    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
279      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
280    o adjoint:
281      Re-organized adjoint checkpointing according to Matt Mazloff
282      (but with modifs/completions/cleanups)
283      Storing is now bundled into large arrays to optimized I/O
284      (and second step in cleanup of the_main_loop)
285    
286    checkpoint59b
287    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
288      - export/import (between ocean & coupler) fields needed for ocean DIC.
289    o pkg/seaice:
290      - get rid of three more exchanges seaice_calc_viscosities (required
291        different loop boundaries in seaice_lsr and seaice_ocean_stress)
292      - bug fix in seaice_ocean_stress (update of lab_sea required)
293      - reduce loop boundaries to necessary minimum also in seaice_evp
294      - go back to the old way of computing deltaC/Z as the adjoint likes that
295        better
296    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
297      passive tracer to an Age Tracer) + update output.txt
298  o pkg/exf:  o pkg/exf:
299    - implement A-grid / C-grid selection for wind-stress input files.    - implement A-grid / C-grid selection for wind-stress input files.
300    - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)    - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
# Line 44  o pkg/exf: some cleaning-up: Line 335  o pkg/exf: some cleaning-up:
335  o pkg/thsice:  o pkg/thsice:
336   fix few little problems, in thsice_calc_thickn.F:   fix few little problems, in thsice_calc_thickn.F:
337    - growth vertically (and not laterally) if iceFrac == iceMaskMax    - growth vertically (and not laterally) if iceFrac == iceMaskMax
338    - melt laterally only if hIce < hThinIce (as the comments say)    - melt only laterally if hIce < hThinIce (as the comments say)
339    and in thsice_extend.F:    and in thsice_extend.F:
340    - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)    - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
341    - 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.
# Line 81  o in FFIELDS.h: Line 372  o in FFIELDS.h:
372       ATMOSPHERIC_LOADING is #define).       ATMOSPHERIC_LOADING is #define).
373  o pkg/kpp: replaced _KPP_RL with _RL  o pkg/kpp: replaced _KPP_RL with _RL
374  o bug fixes for vertical diffusivity computations when both KPP and  o bug fixes for vertical diffusivity computations when both KPP and
375      3D diffusivity arrays are used.      3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
376        are no longer updating the vertical diffusivity array
377        (passed as argument) but are (re-) setting those arrays.
378  o pkg/seaice: fix bug in evp solver, while doing that  o pkg/seaice: fix bug in evp solver, while doing that
379    - change (improve?) discretization of stress computations for both    - change (improve?) discretization of stress computations for both
380      cgrid-lsr and evp solver      cgrid-lsr and evp solver

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