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revision 1.724 by heimbach, Wed Sep 6 18:31:32 2006 UTC revision 1.831 by mlosch, Tue Jun 5 16:01:45 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:
8     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
9     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
10       It is turned off by default (=-1.), because it changes the results.
11     - make it possible to read AREA from a file, too.
12    
13    checkpoint59c
14    o add S/R and diagnostics for oceanic mixed-layer depth
15    o move GMRedi call after all vertical mixing schemes (including KPP)
16    o pkg/thsice:
17     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
18      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
19    o pkg/obcs:
20     - bug fix for balance code
21    o pkg/seaice:
22      - allow values of SEAICE_elasticParm > 1
23      - add new parameter SEAICE_evpTauRelax as an alternative
24        to SEAICE_elasticParm
25      - make lsr boundary conditions free slip (by default), changes result
26      - add code for no slip boundary conditions for lsr
27      - set minimum of zeta to zero (and not 4e8) (changes results)
28      - add a cap on AREA after advecting AREA if seaice_growth is not called
29    o change calculation of Visbeck K:
30      - no longer depend on tapering scheme; instead, compute slope (limited
31        by GM_maxSlope). this is equivalent to what was comuted before with
32        clipping or linear tappering.
33      - fix vertical averaging (wrong by 1/2 level)
34      - leave the old version (but will not be maintained) within
35        #ifdef OLD_VISBECK_CALC / #endif
36      - update output of exp. ideal_2D_oce
37    o change error catch in calc_r_star to improve vectorization
38    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
39      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
40    o adjoint:
41      Re-organized adjoint checkpointing according to Matt Mazloff
42      (but with modifs/completions/cleanups)
43      Storing is now bundled into large arrays to optimized I/O
44      (and second step in cleanup of the_main_loop)
45    
46    checkpoint59b
47    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
48      - export/import (between ocean & coupler) fields needed for ocean DIC.
49    o pkg/seaice:
50      - get rid of three more exchanges seaice_calc_viscosities (required
51        different loop boundaries in seaice_lsr and seaice_ocean_stress)
52      - bug fix in seaice_ocean_stress (update of lab_sea required)
53      - reduce loop boundaries to necessary minimum also in seaice_evp
54      - go back to the old way of computing deltaC/Z as the adjoint likes that
55        better
56    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
57      passive tracer to an Age Tracer) + update output.txt
58    o pkg/exf:
59      - implement A-grid / C-grid selection for wind-stress input files.
60      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
61      for now, in exf_bulk_largeyeager04.F only :
62      - change implementation for case where windspeed + 2. components wind-stress
63        are read-in. AND use rhoConstFresh to convert evap.
64    o pkg/seaice:
65      - use correct EXCH_UV for wind-forcing (on A-grid).
66      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
67        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
68    o pkg/exf:
69      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
70      EXF_INTERPOLATION:
71      - merge global_with_exf/code version of exf_interp_read.F
72        to the main code ;
73      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
74        reading the file ; Important: This options needs to be defined to recover
75        previous code.
76        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
77      - no longer loose real*8 precision along the way when using exf_iprec=64.
78    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
79      - change discretisation of evp-solver in order to avoid another exchange
80        (changes lab_sea) and clean up a little
81      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
82        help the adjoint (this also changes the results slightly)
83      - add a few "_d 0" where they had been missing in seaice_evp.F
84      - cleaning up: remove unused seaice_calc_rhs.F
85    o pkg/exf: some cleaning-up:
86      - change various "constants" into runtime parameters
87      - cleaned-up Large&Yeager04 routine which should eventually
88        replace exf_bulkformulae.F (changed names of S/R and CPP)
89        and merged various ALLOW_ATM_WIND options
90     only used with thsice pkg (in thsice_get_exf.F):
91      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
92        which are used when useStabilityFct_overIce=TRUE (= the default)
93      - change default values of ice & snow emissivity and scale downward LW
94        by ice & snow emissivity.
95    o pkg/thsice:
96     fix few little problems, in thsice_calc_thickn.F:
97      - growth vertically (and not laterally) if iceFrac == iceMaskMax
98      - melt only laterally if hIce < hThinIce (as the comments say)
99      and in thsice_extend.F:
100      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
101      - start to form ice as soon as the minimum ice-volume is reachable.
102     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
103      and cpl_aim+ocn
104    o pkg/kpp
105     - move computation of surface related input fields to KPP into a new
106       subroutine kpp_forcing_surf.F
107     - remove wrong (within bi,bj loops) EXCH calls.
108     - little cleaning (add argument myThid in last position, cvs header ...)
109     - for now, fix conservation problem by exchanging KPPviscAz (may not
110       be the best fix)
111    o pkg/seaice
112     - check for inconsistent evp parameter/cpp-flag combination
113     - remove leftover errIO flat for obsolete name list error handling
114    o OpenAD
115     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
116    
117    checkpoint59a
118    o pkg/seaice: some parameter clarifications and a little bit of clean up
119    o pkg/thsice: rename run-time parameters:
120       himin       -> hIceMin
121       himin0      -> hThinIce
122       hihig       -> hThickIce
123       i0          -> i0swFrac
124       transCoef   -> bMeltCoef
125       frac_energy -> fracMelting
126      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
127       with default values (for now) that do not change the results.
128      remove old version of thsice vars advection in pkg/seaice.
129    o in FFIELDS.h:
130      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
131      - make pLoad & sIceLoad always available (but still only used if
132         ATMOSPHERIC_LOADING is #define).
133    o pkg/kpp: replaced _KPP_RL with _RL
134    o bug fixes for vertical diffusivity computations when both KPP and
135        3D diffusivity arrays are used.
136    o pkg/seaice: fix bug in evp solver, while doing that
137      - change (improve?) discretization of stress computations for both
138        cgrid-lsr and evp solver
139      - add a new routine to compute strain rates
140      - the above changes lab_sea results
141      - add no slip conditions for evp solver (off by default), lsr-version
142        may follow
143      - fix exchange for shear at Z-points (does not change lab_sea)
144      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
145        (to force the user to pick a time step since there is not "safe" way
146        of choosing it)
147      - add principal stress diagnostics
148      - rearrange fields for evp a little to avoid having to call a: too many
149        exchanges and b: exchanges for stress trensor components which we do
150        not have.
151      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
152        of evp, complete rewrite for lsr case (latter is does not yet work
153        in all cases)
154    o pkg/kpp: add code to have mixing in shelf ice caverns
155      - add myThid to all kpp routines (long overdue)
156    
157    checkpoint59
158    o pkg/exf:
159      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
160        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
161      - move exf header files from lower_case.h to UPPER_CASE.h ;
162        add missing cvs Header & Name
163      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
164      - add namelist param. selectStressGridPosition, exf_monFreq
165      - retire many _CLIM routines, and remove data.exf_clim
166        + params moved to data.exf
167        + climsst, climsss now handled by exf_set_gen, i.e.
168          climss?period=0 refers to constant field,
169          climss?period=-12 to monthly forcing
170      - split up namelists in data.exf
171    o pkg/seaice:
172      - remove seaice_exch and seaice_exch_uv
173      - remove superfluous exchange of theta
174      - add myThid to seaice_budget_ocean/ice
175      - add new interface for atmospheric wind forcing (C-grid only)
176        + new routine
177        + two new field (taux, tauy for stress over ice)
178        + removed one global field (DAIRN) for C-grid case only
179    o pkg/thsise
180      - 2nd set of modifs for thsice adjoint in conjunction with exf
181    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
182    
183    checkpoint58y_post
184    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
185      vertical diffusivity, similar to that in MOM4; turned on using
186      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
187      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
188    o Added capability for 3D specification of background vertical diffusion
189      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
190      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
191      "data" file that contains the 3D vertical diffusivity coefficients.
192    o ice dynamics (pkg/seaice) with thsice thermodynamics:
193      - add code within pkg thsice to advect & diffuse sea-ice fields
194      similar to (and will replace) what has been added in  seaice_advdiff.F,
195      but: - conserving Mass, Heat & Salt.
196           - better when using non-linear advection scheme (not yet fully tested)
197           - can also be used in atmospheric set-up (for now, only the diffusion).
198    
199    checkpoint58x_post
200    o IO option for global-file compact format:
201      - add options when generating topology (utils/exch2/matlab-topology-generator)
202      - add I/O capability (pkg/mdsio).
203      - adapt utils/matlab/rdmds.m to read this format.
204      for now long-line format not yet supported by pkg/mdsio (& exch2).
205    o shelfice: add a few diagnostics
206    
207    checkpoint58w_post
208    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
209      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
210      (and replace horiVertRatio in NH code).
211      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
212                         and tutorial_plume_on_slope (sensitive to truncation)
213    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
214      directly to drive seaice model (C-grid only)
215    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
216     - reintroduce computation of wind from stress,
217     - compute tau (in exf_bulkformulae.F) from windstress averaged to
218       mass points to avoid tau = 0
219     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
220    o rdmnc.m: make it work with "global" files created with gluemnc
221    o rdmnc.m : some improvements in dealing with singleton dimension
222      (tested on all testreport mnc output files).
223    o genmake2: disable pkg/profiles if netcdf test fails.
224    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
225    o move call to cal_readparms up to make calendar parameters/variable available
226      to all packages
227    
228    checkpoint58v_post
229    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
230      useDynP_inEos_Zc tested.
231    o pkg/exf: changes to properly interpolate/mask/scale initial fields
232    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
233      and portions thereof.  See read_cs.txt for description and examples.
234    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
235      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
236      following the great-circle arc between those 2 points.
237    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
238      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
239    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
240     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
241     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
242     - still needs work (not working with some options ; efficiency to improve)
243       and serious testing.
244     - use this scheme for temperature & salinity in 2 advection test exp.:
245       advect_xy & advect_xz, respectively.
246    
247    checkpoint58u_post
248    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
249    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
250    o testreport: add option "-skipdir" to skip some test.
251    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
252      momentum calculation.
253    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
254    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
255      remove checkpoint.F and the_correction_step.F (no longer used);
256      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
257    o add option (linFSConserveTr) to correct for tracer source/sink due to
258      Linear Free surface
259    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
260    o pkg/thsice: fix reading mnc-pickups
261    
262    checkpoint58t_post
263    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
264    o pkg/mdsio:
265     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
266       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
267       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
268     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
269     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
270       either MDS_READ_FIELD or MDS_WRITE_FIELD )
271     - new S/R (to replace MDSWRITEMETA), which allows to write more
272       informations (variable names, time ...) to meta files.
273     - modify rdmds.m to give back the meta file content.
274    o pkg/diagnostics: change vertical interpolation to be safer, and more
275       flexible (define p-levels to interpolate to in data.diagnostics);
276      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
277       diagnostic pointer.
278    o pkg/seaice: more cleaning up of seaice_growth, added many comments
279    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
280    o fix multi-category seaice:
281     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
282       SEAICE_MULTICATEGORY
283     - fix short wave heat flux
284    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
285       and allow to use EVP solver. Change forward lab_sea: test both EVP
286       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
287    o Initial check-in of lab_sea adjoint
288      (very similar to natl_box_adjoint/code_seaice)
289      * used C-grid and EVP solver
290      * used KPP, GM/Redi
291      * uses inAdExact=.TRUE.
292      * gradient checks fail for both ADM and TLM
293        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
294        f.d. gradients actually seem more problematic than ADM, TLM gradients;
295        issue is related to forward mismatch between g77 an ifort
296    o pkg/seaice: overhaul of thermodynamics
297     - growth.F and groatb.F are replaced by new routine seaice_growth.F
298     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
299     - move a few global fields out of SEAICE.h into seaice_growth.F and
300       make them 2D (FICE/QNETO/ ...)
301     - remove FO (it is the same as QNETO)
302     - introduce a few local fields to avoid modifying external fields such
303       as atemp, etc.
304    
305    checkpoint58s_post
306    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
307      changed exf_set_gen.F so that
308        genperiod=0 means input file is one time-constant field and
309        genperiod=-12 means input file contains 12 monthly means
310    o CG2D: use pre-computed solver main-diagonal (stored in common block);
311      this affects truncation error ; generate new output file for exp. which
312      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
313        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
314        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
315        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
316        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
317        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
318    o start implementation of deep-atmosphere and anelastic formulation
319    o verification: remove 2nd copy of input files and use script "prepare_run"
320      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
321    o mom_common/vecinv/fluxform: fix a few initialisation isssues
322    o profiles: fix for multithreaded case
323    
324    o diagnostics: rename few diags:
325      s/'PRESSURE'/'RCENTER '/g
326      s/'TICE    '/'oceFreez'/g
327      s/'TAUX    '/'oceTAUX '/g
328      s/'TAUY    '/'oceTAUY '/g
329      s/'SWFLUX  '/'oceQsw  '/g
330      s/DIFx/DFxE/g
331      s/DIFy/DFyE/g
332      and add few ocean-forcing diagnostics:
333      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
334    o modifications to pkg/seaice/growth.F and budget.F, which change results of
335      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
336      as actual snow thickness.  It now refers everywhere to effective snow
337      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
338    
339    checkpoint58r_post
340    o modifications to pkg/seaice/growth.F, which change results of
341      lab_sea experiment: fixes pertain to melting snow over open water, to
342      masking EVAP under sea ice, and to using the correct AREA variable for
343      computations of EVAP, PRECIP, HSNOW, and GHEFF
344    o add ability to read bathy, salt, and theta using MNC (off by def)
345    o add flooding algorithm and advection of HSNOW for pkg/seaice;
346      both are turned off by default and do no change any results
347    o seaice advection with pkg/thsice: a step toward the use of non-linear
348      advection scheme, but #ifdef or commented out for now (requires more EXCH).
349    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
350      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
351      in natl_box (affects results @ truncation level: update output.txt)
352    o multi-threading and IO:
353      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
354      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
355        (needed to work with SingleCpuIO): tested in all verif. exp.
356    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
357      affects the results (but none of the verification test uses this scheme).
358    o Adding some pkg/diagnostics capability to pkg/seaice
359      (will certainly be subject to changes)
360    o ctrl: adding new control variables:
361      lwflux, lwdown, evap, snowprecip, apressure, runoff
362    
363    checkpoint58q_post
364    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
365      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
366      high_res_cube configuration by 4% on Columbia.
367    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
368      add (in global_with_exf/code) a version of EXF_INTERP_READ without
369      dynamical allocation (seems to work in multi-threaded).
370    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
371      single CPU io) so that TAF does not have to see EESUPPORT.h
372    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
373    
374    checkpoint58p_post
375    o obcs: stop if obcs is used with useCDscheme = .true.
376  o shelfice:  o shelfice:
377   - fix a sign error so that no slip at shelfice interface works   - fix a sign error so that no slip at shelfice interface works
378   - remove stop for combination non-hydrostatic code and shelfice. That does   - remove stop for combination non-hydrostatic code and shelfice. That does

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