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revision 1.794 by mlosch, Thu Apr 19 15:49:24 2007 UTC revision 1.891 by dimitri, Thu Oct 11 10:30:34 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 added open boundary conditions capability for seaice HEFF and AREA
8    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
9      thermodynamics
10      - requires a little reorganization, which affects the testreport results
11        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
12        so that now the conservative form is tested
13      - add a few comments
14    o add missing cvs $Header$ or $Name$ in eesupp/*, pkg/* & verification/code*
15    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
16    o add new diagnostics to seaice: advective, diffusive fluxes (only for
17      multidim-advection, for scheme 2 they are not filled) and transports,
18      thermodynamic growth rates
19    o change units of EmPmR (inside the code) from m/s to kg/m2/s (mass flux) but
20      leave input file unchanged. Affects results @ truncation level (cg2d match)
21      and update output of experiments: lab_sea(6), global_ocean.90x40x15(10),
22      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
23      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
24      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
25    
26    checkpoint59h
27    o pkg/exf:
28      - improve vectorization by moving if-statement out of loops in
29        exf_mapfields, exf_radiation
30      - exf_bulkformulae.F: introduce 2D fields and vectorize code
31    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
32    o testreport:
33      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
34        monitor & update offline_exf_seaice exp. output.
35      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
36    o pkg/seaice:
37      - bug fix in the evp solver: boundary conditions were affected be
38        masking of zMax/zMin (changes results)
39      - minor bug fix in boundary conditions in seaice_calc_strainrates
40        (changes results for no_slip)
41      - seaice_lsr.F: make interpolation of eta dependent on boundaries
42      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
43      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
44        stress formulation and no-slip boundary conditions
45    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
46      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
47    o pkg/seaice: a first HSALT time stepping equation has been checked in
48    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
49      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
50      without requiring DO-IF statements
51    o pkg/thsice:
52      use continuous power-law function for partition of energy between lateral
53      melting/freezing and thinning/thickening ; old code using step function
54      still available with #undef THSICE_FRACEN_POWERLAW
55      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
56    o testreport: change AD testing : check against results/output_adm.txt
57      using same scripts as for forward test.
58    
59    checkpoint59g
60    o adjoint testing: in preparation for changing testreport:
61      - output format: cost and grad written on separated lines
62      - ad output results in directory "results" (instead of "results_ad")
63    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
64    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
65    o pkg/ecco: allow user defined cost function contributions
66    o testreport:
67      Allow to choose (per experiment) the list of tested output variables
68       and the main variable (used to issue a pass/FAIL ) ;
69      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
70      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
71      Also modify printing of summary:
72       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
73       b) echo the list of tested variables in the individual summary.txt of
74          each experiment.
75    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
76      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
77      (but still depend on the tile decompostion of the domain).
78    o pkg/seaice: change a discretization detail to make the B-grid code
79      "more symmetric". This change is likely to remove all "ridges/leads" that
80      where quasi-aligned with the grid in B-grid solutions. It may also be
81      the solution to the stress coupling issues with the B-grid.
82    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
83      remove .cvsignore from input dir. (since testreport no longer run here).
84    o pkg/thsice:
85     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
86     - fix reshaping of sea-ice just after advection:
87       melt all the ice only if ice-volume is too small.
88     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
89       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
90     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
91    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
92      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
93    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
94      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
95      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
96      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
97      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
98      -> update output.txt
99    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
100     this affects truncation error: -> update output.txt of exp:
101      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
102      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
103    
104    checkpoint59f
105    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
106    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
107      a bounded range (in forward mode)
108    o pkg/ecco, ctrl, autodiff and mom_common:
109     internal parameter controls, completements of implementations
110    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
111    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
112      (not seem any difference in testing results).
113    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
114       at face corners.
115    o pkg/generic_advdiff:
116     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
117      loop range indices for computing vertical advection tendency
118      and do the calculation in the interior only (no overlap) ;
119      for now, only implemented for SOM advection (to save CPU time).
120     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
121    o exch2 adjoint
122      First set of changes:
123      - add exch2 hand-written adjoint templates
124      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
125        This will require cleanup in pkg/autodiff/*.F
126        (changed routines currently kept separate in verif. code/)
127      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
128        that used to hide exch2 or cubed-sphere specific code
129        (commented via 'cph-exch2')
130    o pkg/seaice
131      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
132    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
133       output of global_ocean.cs32x15.thsice .
134    
135    checkpoint59e
136    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
137      for B-grid vector (not yet tested) and C-grid vector (<- only used
138      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
139    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
140      (#ifdef ALLOW_SALT_PLUME)
141    o gather_2d/scatter_2d: removed halo regions
142    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
143      scheme and the corresponding test case (under front_relax dir). For now,
144      only available with Skew-flux form and not yet tested in realistic set-up.
145      adjoint: store directives updated, but gradient checks deteriorated,
146      so maybe GM/Redi adjoint is now broken.
147    o seaice adjoint
148      * add AREA, HEFF, HSNOW as control variable
149        (should not change lab_sea results)
150      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
151    o pkg/seaice:
152      * added computation of saltFlux in seaice_growth;
153        For time being, sea ice salinity is assumed constant
154        contribution of snow flooding to freshening of sea ice is neglected.
155        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
156        defaults to 0.0 in order to maintain backward compatibility.
157        Typical values for SEAICE_salinity are 4 to 10 g/kg.
158      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
159      * added SEAICE_availHeatFrac, which specifies fraction of surface level
160        heat content used to melt or grow ice
161      * commented out cap of HICE: it helps keep ice thinner
162      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
163      * applied OBCS T/S mask to HEFFM sea ice mask
164    
165    checkpoint59d
166    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
167     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
168     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
169    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
170     and change default value of parameter "GM_Small_Number";
171     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
172       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
173       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
174    o pkg/ecco: cost function when applying pkg/smooth to controls
175    o pkg/ctrl: add forcingPrecond run time parameter
176    o pkg/seaice:
177     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
178     - fix bug in metric terms of u-equation in LSR solver (implicit part),
179       changes verification/lab_sea
180     - rearrange implicit part of u-equation in LSR solver to make it easier to
181       read, understand, and debug. This causes changes at the truncation level.
182     - fix (serious) bug in the boundary conditions (sign error in the implicit
183       part) of the LSR solver. Changes all LSR results.
184     - fixed problem with HSNOW initialization to avoid thick snow when AREA
185       is initilized with small values - does not change lab_sea results.
186     - added HsnowFile initialization capability
187    o pkg/smooth: addition to model/src and pkg/ctrl so allow
188     initialization of pkg/smooth and application to control vector
189    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
190    o dependencies: pkg/profiles requires pkg/cal
191    o pkg/profiles:
192     - added option ALLOW_PROFILES_GENERICGRID
193         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
194         that interpolation information (grid points and coefficients) is provided
195         within the netcdf input files.
196         -> sample matlab scripts can be found in MITgcm_contrib/gael
197         that allow you to prepare netcdf input files.
198     - also modified: cleaner include statements, cleaner error print statements,
199       cleaner stops when error, and more tests of the netcdf input files consistency.
200    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
201    o pkg/seaice:
202     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
203       requires a new routine: seaice_diagnostics_fill.F
204     - make sure that seaice does not move if not forced (pressure replacement
205       method, Hibler and Ip, 1995), changes results
206     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
207     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
208       It is turned off by default (=-1.), because it changes the results.
209     - make it possible to read AREA from a file, too.
210    
211    checkpoint59c
212    o add S/R and diagnostics for oceanic mixed-layer depth
213    o move GMRedi call after all vertical mixing schemes (including KPP)
214    o pkg/thsice:
215     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
216      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
217    o pkg/obcs:
218     - bug fix for balance code
219    o pkg/seaice:
220      - allow values of SEAICE_elasticParm > 1
221      - add new parameter SEAICE_evpTauRelax as an alternative
222        to SEAICE_elasticParm
223      - make lsr boundary conditions free slip (by default), changes result
224      - add code for no slip boundary conditions for lsr
225      - set minimum of zeta to zero (and not 4e8) (changes results)
226      - add a cap on AREA after advecting AREA if seaice_growth is not called
227    o change calculation of Visbeck K:
228      - no longer depend on tapering scheme; instead, compute slope (limited
229        by GM_maxSlope). this is equivalent to what was comuted before with
230        clipping or linear tappering.
231      - fix vertical averaging (wrong by 1/2 level)
232      - leave the old version (but will not be maintained) within
233        #ifdef OLD_VISBECK_CALC / #endif
234      - update output of exp. ideal_2D_oce
235    o change error catch in calc_r_star to improve vectorization
236    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
237      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
238    o adjoint:
239      Re-organized adjoint checkpointing according to Matt Mazloff
240      (but with modifs/completions/cleanups)
241      Storing is now bundled into large arrays to optimized I/O
242      (and second step in cleanup of the_main_loop)
243    
244    checkpoint59b
245    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
246      - export/import (between ocean & coupler) fields needed for ocean DIC.
247    o pkg/seaice:
248      - get rid of three more exchanges seaice_calc_viscosities (required
249        different loop boundaries in seaice_lsr and seaice_ocean_stress)
250      - bug fix in seaice_ocean_stress (update of lab_sea required)
251      - reduce loop boundaries to necessary minimum also in seaice_evp
252      - go back to the old way of computing deltaC/Z as the adjoint likes that
253        better
254    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
255      passive tracer to an Age Tracer) + update output.txt
256    o pkg/exf:
257      - implement A-grid / C-grid selection for wind-stress input files.
258      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
259      for now, in exf_bulk_largeyeager04.F only :
260      - change implementation for case where windspeed + 2. components wind-stress
261        are read-in. AND use rhoConstFresh to convert evap.
262    o pkg/seaice:
263      - use correct EXCH_UV for wind-forcing (on A-grid).
264      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
265        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
266    o pkg/exf:
267      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
268      EXF_INTERPOLATION:
269      - merge global_with_exf/code version of exf_interp_read.F
270        to the main code ;
271      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
272        reading the file ; Important: This options needs to be defined to recover
273        previous code.
274        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
275      - no longer loose real*8 precision along the way when using exf_iprec=64.
276    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
277      - change discretisation of evp-solver in order to avoid another exchange
278        (changes lab_sea) and clean up a little
279      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
280        help the adjoint (this also changes the results slightly)
281      - add a few "_d 0" where they had been missing in seaice_evp.F
282      - cleaning up: remove unused seaice_calc_rhs.F
283    o pkg/exf: some cleaning-up:
284      - change various "constants" into runtime parameters
285      - cleaned-up Large&Yeager04 routine which should eventually
286        replace exf_bulkformulae.F (changed names of S/R and CPP)
287        and merged various ALLOW_ATM_WIND options
288     only used with thsice pkg (in thsice_get_exf.F):
289      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
290        which are used when useStabilityFct_overIce=TRUE (= the default)
291      - change default values of ice & snow emissivity and scale downward LW
292        by ice & snow emissivity.
293    o pkg/thsice:
294     fix few little problems, in thsice_calc_thickn.F:
295      - growth vertically (and not laterally) if iceFrac == iceMaskMax
296      - melt only laterally if hIce < hThinIce (as the comments say)
297      and in thsice_extend.F:
298      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
299      - start to form ice as soon as the minimum ice-volume is reachable.
300     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
301      and cpl_aim+ocn
302    o pkg/kpp
303     - move computation of surface related input fields to KPP into a new
304       subroutine kpp_forcing_surf.F
305     - remove wrong (within bi,bj loops) EXCH calls.
306     - little cleaning (add argument myThid in last position, cvs header ...)
307     - for now, fix conservation problem by exchanging KPPviscAz (may not
308       be the best fix)
309    o pkg/seaice
310     - check for inconsistent evp parameter/cpp-flag combination
311     - remove leftover errIO flat for obsolete name list error handling
312    o OpenAD
313     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
314    
315    checkpoint59a
316    o pkg/seaice: some parameter clarifications and a little bit of clean up
317    o pkg/thsice: rename run-time parameters:
318       himin       -> hIceMin
319       himin0      -> hThinIce
320       hihig       -> hThickIce
321       i0          -> i0swFrac
322       transCoef   -> bMeltCoef
323       frac_energy -> fracMelting
324      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
325       with default values (for now) that do not change the results.
326      remove old version of thsice vars advection in pkg/seaice.
327    o in FFIELDS.h:
328      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
329      - make pLoad & sIceLoad always available (but still only used if
330         ATMOSPHERIC_LOADING is #define).
331    o pkg/kpp: replaced _KPP_RL with _RL
332    o bug fixes for vertical diffusivity computations when both KPP and
333        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
334        are no longer updating the vertical diffusivity array
335        (passed as argument) but are (re-) setting those arrays.
336    o pkg/seaice: fix bug in evp solver, while doing that
337      - change (improve?) discretization of stress computations for both
338        cgrid-lsr and evp solver
339      - add a new routine to compute strain rates
340      - the above changes lab_sea results
341      - add no slip conditions for evp solver (off by default), lsr-version
342        may follow
343      - fix exchange for shear at Z-points (does not change lab_sea)
344      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
345        (to force the user to pick a time step since there is not "safe" way
346        of choosing it)
347      - add principal stress diagnostics
348      - rearrange fields for evp a little to avoid having to call a: too many
349        exchanges and b: exchanges for stress trensor components which we do
350        not have.
351      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
352        of evp, complete rewrite for lsr case (latter is does not yet work
353        in all cases)
354  o pkg/kpp: add code to have mixing in shelf ice caverns  o pkg/kpp: add code to have mixing in shelf ice caverns
355      - add myThid to all kpp routines (long overdue)
356    
357  checkpoint59  checkpoint59
358  o pkg/exf:  o pkg/exf:

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