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revision 1.776 by jmc, Tue Mar 13 14:06:22 2007 UTC revision 1.886 by jmc, Mon Oct 1 19:30:47 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 change units of EmPmR (inside the code) from m/s to kg/m2/s (mass flux) but
8      leave input file unchanged. Affects results @ truncation level (cg2d match)
9      and update output of experiments: lab_sea(6), global_ocean.90x40x15(10),
10      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
11      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
12      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
13    
14    checkpoint59h
15    o pkg/exf:
16      - improve vectorization by moving if-statement out of loops in
17        exf_mapfields, exf_radiation
18      - exf_bulkformulae.F: introduce 2D fields and vectorize code
19    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
20    o testreport:
21      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
22        monitor & update offline_exf_seaice exp. output.
23      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
24    o pkg/seaice:
25      - bug fix in the evp solver: boundary conditions were affected be
26        masking of zMax/zMin (changes results)
27      - minor bug fix in boundary conditions in seaice_calc_strainrates
28        (changes results for no_slip)
29      - seaice_lsr.F: make interpolation of eta dependent on boundaries
30      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
31      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
32        stress formulation and no-slip boundary conditions
33    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
34      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
35    o pkg/seaice: a first HSALT time stepping equation has been checked in
36    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
37      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
38      without requiring DO-IF statements
39    o pkg/thsice:
40      use continuous power-law function for partition of energy between lateral
41      melting/freezing and thinning/thickening ; old code using step function
42      still available with #undef THSICE_FRACEN_POWERLAW
43      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
44    o testreport: change AD testing : check against results/output_adm.txt
45      using same scripts as for forward test.
46    
47    checkpoint59g
48    o adjoint testing: in preparation for changing testreport:
49      - output format: cost and grad written on separated lines
50      - ad output results in directory "results" (instead of "results_ad")
51    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
52    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
53    o pkg/ecco: allow user defined cost function contributions
54    o testreport:
55      Allow to choose (per experiment) the list of tested output variables
56       and the main variable (used to issue a pass/FAIL ) ;
57      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
58      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
59      Also modify printing of summary:
60       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
61       b) echo the list of tested variables in the individual summary.txt of
62          each experiment.
63    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
64      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
65      (but still depend on the tile decompostion of the domain).
66    o pkg/seaice: change a discretization detail to make the B-grid code
67      "more symmetric". This change is likely to remove all "ridges/leads" that
68      where quasi-aligned with the grid in B-grid solutions. It may also be
69      the solution to the stress coupling issues with the B-grid.
70    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
71      remove .cvsignore from input dir. (since testreport no longer run here).
72    o pkg/thsice:
73     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
74     - fix reshaping of sea-ice just after advection:
75       melt all the ice only if ice-volume is too small.
76     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
77       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
78     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
79    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
80      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
81    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
82      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
83      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
84      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
85      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
86      -> update output.txt
87    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
88     this affects truncation error: -> update output.txt of exp:
89      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
90      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
91    
92    checkpoint59f
93    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
94    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
95      a bounded range (in forward mode)
96    o pkg/ecco, ctrl, autodiff and mom_common:
97     internal parameter controls, completements of implementations
98    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
99    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
100      (not seem any difference in testing results).
101    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
102       at face corners.
103    o pkg/generic_advdiff:
104     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
105      loop range indices for computing vertical advection tendency
106      and do the calculation in the interior only (no overlap) ;
107      for now, only implemented for SOM advection (to save CPU time).
108     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
109    o exch2 adjoint
110      First set of changes:
111      - add exch2 hand-written adjoint templates
112      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
113        This will require cleanup in pkg/autodiff/*.F
114        (changed routines currently kept separate in verif. code/)
115      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
116        that used to hide exch2 or cubed-sphere specific code
117        (commented via 'cph-exch2')
118    o pkg/seaice
119      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
120    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
121       output of global_ocean.cs32x15.thsice .
122    
123    checkpoint59e
124    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
125      for B-grid vector (not yet tested) and C-grid vector (<- only used
126      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
127    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
128      (#ifdef ALLOW_SALT_PLUME)
129    o gather_2d/scatter_2d: removed halo regions
130    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
131      scheme and the corresponding test case (under front_relax dir). For now,
132      only available with Skew-flux form and not yet tested in realistic set-up.
133      adjoint: store directives updated, but gradient checks deteriorated,
134      so maybe GM/Redi adjoint is now broken.
135    o seaice adjoint
136      * add AREA, HEFF, HSNOW as control variable
137        (should not change lab_sea results)
138      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
139    o pkg/seaice:
140      * added computation of saltFlux in seaice_growth;
141        For time being, sea ice salinity is assumed constant
142        contribution of snow flooding to freshening of sea ice is neglected.
143        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
144        defaults to 0.0 in order to maintain backward compatibility.
145        Typical values for SEAICE_salinity are 4 to 10 g/kg.
146      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
147      * added SEAICE_availHeatFrac, which specifies fraction of surface level
148        heat content used to melt or grow ice
149      * commented out cap of HICE: it helps keep ice thinner
150      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
151      * applied OBCS T/S mask to HEFFM sea ice mask
152    
153    checkpoint59d
154    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
155     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
156     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
157    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
158     and change default value of parameter "GM_Small_Number";
159     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
160       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
161       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
162    o pkg/ecco: cost function when applying pkg/smooth to controls
163    o pkg/ctrl: add forcingPrecond run time parameter
164    o pkg/seaice:
165     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
166     - fix bug in metric terms of u-equation in LSR solver (implicit part),
167       changes verification/lab_sea
168     - rearrange implicit part of u-equation in LSR solver to make it easier to
169       read, understand, and debug. This causes changes at the truncation level.
170     - fix (serious) bug in the boundary conditions (sign error in the implicit
171       part) of the LSR solver. Changes all LSR results.
172     - fixed problem with HSNOW initialization to avoid thick snow when AREA
173       is initilized with small values - does not change lab_sea results.
174     - added HsnowFile initialization capability
175    o pkg/smooth: addition to model/src and pkg/ctrl so allow
176     initialization of pkg/smooth and application to control vector
177    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
178    o dependencies: pkg/profiles requires pkg/cal
179    o pkg/profiles:
180     - added option ALLOW_PROFILES_GENERICGRID
181         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
182         that interpolation information (grid points and coefficients) is provided
183         within the netcdf input files.
184         -> sample matlab scripts can be found in MITgcm_contrib/gael
185         that allow you to prepare netcdf input files.
186     - also modified: cleaner include statements, cleaner error print statements,
187       cleaner stops when error, and more tests of the netcdf input files consistency.
188    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
189    o pkg/seaice:
190     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
191       requires a new routine: seaice_diagnostics_fill.F
192     - make sure that seaice does not move if not forced (pressure replacement
193       method, Hibler and Ip, 1995), changes results
194     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
195     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
196       It is turned off by default (=-1.), because it changes the results.
197     - make it possible to read AREA from a file, too.
198    
199    checkpoint59c
200    o add S/R and diagnostics for oceanic mixed-layer depth
201    o move GMRedi call after all vertical mixing schemes (including KPP)
202    o pkg/thsice:
203     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
204      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
205    o pkg/obcs:
206     - bug fix for balance code
207    o pkg/seaice:
208      - allow values of SEAICE_elasticParm > 1
209      - add new parameter SEAICE_evpTauRelax as an alternative
210        to SEAICE_elasticParm
211      - make lsr boundary conditions free slip (by default), changes result
212      - add code for no slip boundary conditions for lsr
213      - set minimum of zeta to zero (and not 4e8) (changes results)
214      - add a cap on AREA after advecting AREA if seaice_growth is not called
215    o change calculation of Visbeck K:
216      - no longer depend on tapering scheme; instead, compute slope (limited
217        by GM_maxSlope). this is equivalent to what was comuted before with
218        clipping or linear tappering.
219      - fix vertical averaging (wrong by 1/2 level)
220      - leave the old version (but will not be maintained) within
221        #ifdef OLD_VISBECK_CALC / #endif
222      - update output of exp. ideal_2D_oce
223    o change error catch in calc_r_star to improve vectorization
224    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
225      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
226    o adjoint:
227      Re-organized adjoint checkpointing according to Matt Mazloff
228      (but with modifs/completions/cleanups)
229      Storing is now bundled into large arrays to optimized I/O
230      (and second step in cleanup of the_main_loop)
231    
232    checkpoint59b
233    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
234      - export/import (between ocean & coupler) fields needed for ocean DIC.
235    o pkg/seaice:
236      - get rid of three more exchanges seaice_calc_viscosities (required
237        different loop boundaries in seaice_lsr and seaice_ocean_stress)
238      - bug fix in seaice_ocean_stress (update of lab_sea required)
239      - reduce loop boundaries to necessary minimum also in seaice_evp
240      - go back to the old way of computing deltaC/Z as the adjoint likes that
241        better
242    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
243      passive tracer to an Age Tracer) + update output.txt
244    o pkg/exf:
245      - implement A-grid / C-grid selection for wind-stress input files.
246      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
247      for now, in exf_bulk_largeyeager04.F only :
248      - change implementation for case where windspeed + 2. components wind-stress
249        are read-in. AND use rhoConstFresh to convert evap.
250    o pkg/seaice:
251      - use correct EXCH_UV for wind-forcing (on A-grid).
252      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
253        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
254    o pkg/exf:
255      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
256      EXF_INTERPOLATION:
257      - merge global_with_exf/code version of exf_interp_read.F
258        to the main code ;
259      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
260        reading the file ; Important: This options needs to be defined to recover
261        previous code.
262        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
263      - no longer loose real*8 precision along the way when using exf_iprec=64.
264    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
265      - change discretisation of evp-solver in order to avoid another exchange
266        (changes lab_sea) and clean up a little
267      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
268        help the adjoint (this also changes the results slightly)
269      - add a few "_d 0" where they had been missing in seaice_evp.F
270      - cleaning up: remove unused seaice_calc_rhs.F
271    o pkg/exf: some cleaning-up:
272      - change various "constants" into runtime parameters
273      - cleaned-up Large&Yeager04 routine which should eventually
274        replace exf_bulkformulae.F (changed names of S/R and CPP)
275        and merged various ALLOW_ATM_WIND options
276     only used with thsice pkg (in thsice_get_exf.F):
277      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
278        which are used when useStabilityFct_overIce=TRUE (= the default)
279      - change default values of ice & snow emissivity and scale downward LW
280        by ice & snow emissivity.
281    o pkg/thsice:
282     fix few little problems, in thsice_calc_thickn.F:
283      - growth vertically (and not laterally) if iceFrac == iceMaskMax
284      - melt only laterally if hIce < hThinIce (as the comments say)
285      and in thsice_extend.F:
286      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
287      - start to form ice as soon as the minimum ice-volume is reachable.
288     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
289      and cpl_aim+ocn
290    o pkg/kpp
291     - move computation of surface related input fields to KPP into a new
292       subroutine kpp_forcing_surf.F
293     - remove wrong (within bi,bj loops) EXCH calls.
294     - little cleaning (add argument myThid in last position, cvs header ...)
295     - for now, fix conservation problem by exchanging KPPviscAz (may not
296       be the best fix)
297    o pkg/seaice
298     - check for inconsistent evp parameter/cpp-flag combination
299     - remove leftover errIO flat for obsolete name list error handling
300    o OpenAD
301     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
302    
303    checkpoint59a
304    o pkg/seaice: some parameter clarifications and a little bit of clean up
305    o pkg/thsice: rename run-time parameters:
306       himin       -> hIceMin
307       himin0      -> hThinIce
308       hihig       -> hThickIce
309       i0          -> i0swFrac
310       transCoef   -> bMeltCoef
311       frac_energy -> fracMelting
312      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
313       with default values (for now) that do not change the results.
314      remove old version of thsice vars advection in pkg/seaice.
315    o in FFIELDS.h:
316      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
317      - make pLoad & sIceLoad always available (but still only used if
318         ATMOSPHERIC_LOADING is #define).
319    o pkg/kpp: replaced _KPP_RL with _RL
320    o bug fixes for vertical diffusivity computations when both KPP and
321        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
322        are no longer updating the vertical diffusivity array
323        (passed as argument) but are (re-) setting those arrays.
324    o pkg/seaice: fix bug in evp solver, while doing that
325      - change (improve?) discretization of stress computations for both
326        cgrid-lsr and evp solver
327      - add a new routine to compute strain rates
328      - the above changes lab_sea results
329      - add no slip conditions for evp solver (off by default), lsr-version
330        may follow
331      - fix exchange for shear at Z-points (does not change lab_sea)
332      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
333        (to force the user to pick a time step since there is not "safe" way
334        of choosing it)
335      - add principal stress diagnostics
336      - rearrange fields for evp a little to avoid having to call a: too many
337        exchanges and b: exchanges for stress trensor components which we do
338        not have.
339      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
340        of evp, complete rewrite for lsr case (latter is does not yet work
341        in all cases)
342    o pkg/kpp: add code to have mixing in shelf ice caverns
343      - add myThid to all kpp routines (long overdue)
344    
345    checkpoint59
346    o pkg/exf:
347      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
348        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
349      - move exf header files from lower_case.h to UPPER_CASE.h ;
350        add missing cvs Header & Name
351      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
352      - add namelist param. selectStressGridPosition, exf_monFreq
353      - retire many _CLIM routines, and remove data.exf_clim
354        + params moved to data.exf
355        + climsst, climsss now handled by exf_set_gen, i.e.
356          climss?period=0 refers to constant field,
357          climss?period=-12 to monthly forcing
358      - split up namelists in data.exf
359    o pkg/seaice:
360      - remove seaice_exch and seaice_exch_uv
361      - remove superfluous exchange of theta
362      - add myThid to seaice_budget_ocean/ice
363      - add new interface for atmospheric wind forcing (C-grid only)
364        + new routine
365        + two new field (taux, tauy for stress over ice)
366        + removed one global field (DAIRN) for C-grid case only
367    o pkg/thsise
368      - 2nd set of modifs for thsice adjoint in conjunction with exf
369    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
370    
371    checkpoint58y_post
372    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
373      vertical diffusivity, similar to that in MOM4; turned on using
374      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
375      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
376    o Added capability for 3D specification of background vertical diffusion
377      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
378      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
379      "data" file that contains the 3D vertical diffusivity coefficients.
380    o ice dynamics (pkg/seaice) with thsice thermodynamics:
381      - add code within pkg thsice to advect & diffuse sea-ice fields
382      similar to (and will replace) what has been added in  seaice_advdiff.F,
383      but: - conserving Mass, Heat & Salt.
384           - better when using non-linear advection scheme (not yet fully tested)
385           - can also be used in atmospheric set-up (for now, only the diffusion).
386    
387    checkpoint58x_post
388    o IO option for global-file compact format:
389      - add options when generating topology (utils/exch2/matlab-topology-generator)
390      - add I/O capability (pkg/mdsio).
391      - adapt utils/matlab/rdmds.m to read this format.
392      for now long-line format not yet supported by pkg/mdsio (& exch2).
393    o shelfice: add a few diagnostics
394    
395    checkpoint58w_post
396  o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:  o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
397    rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref    rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
398    (and replace horiVertRatio in NH code).    (and replace horiVertRatio in NH code).

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