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revision 1.730 by cnh, Wed Oct 11 19:30:01 2006 UTC revision 1.832 by mlosch, Wed Jun 6 14:37:14 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     - make sure that seaice does not move if not forced (pressure replacement
9       method, Hibler and Ip, 1995), changes results
10     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
11     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
12       It is turned off by default (=-1.), because it changes the results.
13     - make it possible to read AREA from a file, too.
14    
15    checkpoint59c
16    o add S/R and diagnostics for oceanic mixed-layer depth
17    o move GMRedi call after all vertical mixing schemes (including KPP)
18    o pkg/thsice:
19     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
20      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
21    o pkg/obcs:
22     - bug fix for balance code
23    o pkg/seaice:
24      - allow values of SEAICE_elasticParm > 1
25      - add new parameter SEAICE_evpTauRelax as an alternative
26        to SEAICE_elasticParm
27      - make lsr boundary conditions free slip (by default), changes result
28      - add code for no slip boundary conditions for lsr
29      - set minimum of zeta to zero (and not 4e8) (changes results)
30      - add a cap on AREA after advecting AREA if seaice_growth is not called
31    o change calculation of Visbeck K:
32      - no longer depend on tapering scheme; instead, compute slope (limited
33        by GM_maxSlope). this is equivalent to what was comuted before with
34        clipping or linear tappering.
35      - fix vertical averaging (wrong by 1/2 level)
36      - leave the old version (but will not be maintained) within
37        #ifdef OLD_VISBECK_CALC / #endif
38      - update output of exp. ideal_2D_oce
39    o change error catch in calc_r_star to improve vectorization
40    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
41      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
42    o adjoint:
43      Re-organized adjoint checkpointing according to Matt Mazloff
44      (but with modifs/completions/cleanups)
45      Storing is now bundled into large arrays to optimized I/O
46      (and second step in cleanup of the_main_loop)
47    
48    checkpoint59b
49    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
50      - export/import (between ocean & coupler) fields needed for ocean DIC.
51    o pkg/seaice:
52      - get rid of three more exchanges seaice_calc_viscosities (required
53        different loop boundaries in seaice_lsr and seaice_ocean_stress)
54      - bug fix in seaice_ocean_stress (update of lab_sea required)
55      - reduce loop boundaries to necessary minimum also in seaice_evp
56      - go back to the old way of computing deltaC/Z as the adjoint likes that
57        better
58    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
59      passive tracer to an Age Tracer) + update output.txt
60    o pkg/exf:
61      - implement A-grid / C-grid selection for wind-stress input files.
62      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
63      for now, in exf_bulk_largeyeager04.F only :
64      - change implementation for case where windspeed + 2. components wind-stress
65        are read-in. AND use rhoConstFresh to convert evap.
66    o pkg/seaice:
67      - use correct EXCH_UV for wind-forcing (on A-grid).
68      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
69        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
70    o pkg/exf:
71      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
72      EXF_INTERPOLATION:
73      - merge global_with_exf/code version of exf_interp_read.F
74        to the main code ;
75      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
76        reading the file ; Important: This options needs to be defined to recover
77        previous code.
78        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
79      - no longer loose real*8 precision along the way when using exf_iprec=64.
80    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
81      - change discretisation of evp-solver in order to avoid another exchange
82        (changes lab_sea) and clean up a little
83      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
84        help the adjoint (this also changes the results slightly)
85      - add a few "_d 0" where they had been missing in seaice_evp.F
86      - cleaning up: remove unused seaice_calc_rhs.F
87    o pkg/exf: some cleaning-up:
88      - change various "constants" into runtime parameters
89      - cleaned-up Large&Yeager04 routine which should eventually
90        replace exf_bulkformulae.F (changed names of S/R and CPP)
91        and merged various ALLOW_ATM_WIND options
92     only used with thsice pkg (in thsice_get_exf.F):
93      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
94        which are used when useStabilityFct_overIce=TRUE (= the default)
95      - change default values of ice & snow emissivity and scale downward LW
96        by ice & snow emissivity.
97    o pkg/thsice:
98     fix few little problems, in thsice_calc_thickn.F:
99      - growth vertically (and not laterally) if iceFrac == iceMaskMax
100      - melt only laterally if hIce < hThinIce (as the comments say)
101      and in thsice_extend.F:
102      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
103      - start to form ice as soon as the minimum ice-volume is reachable.
104     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
105      and cpl_aim+ocn
106    o pkg/kpp
107     - move computation of surface related input fields to KPP into a new
108       subroutine kpp_forcing_surf.F
109     - remove wrong (within bi,bj loops) EXCH calls.
110     - little cleaning (add argument myThid in last position, cvs header ...)
111     - for now, fix conservation problem by exchanging KPPviscAz (may not
112       be the best fix)
113    o pkg/seaice
114     - check for inconsistent evp parameter/cpp-flag combination
115     - remove leftover errIO flat for obsolete name list error handling
116    o OpenAD
117     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
118    
119    checkpoint59a
120    o pkg/seaice: some parameter clarifications and a little bit of clean up
121    o pkg/thsice: rename run-time parameters:
122       himin       -> hIceMin
123       himin0      -> hThinIce
124       hihig       -> hThickIce
125       i0          -> i0swFrac
126       transCoef   -> bMeltCoef
127       frac_energy -> fracMelting
128      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
129       with default values (for now) that do not change the results.
130      remove old version of thsice vars advection in pkg/seaice.
131    o in FFIELDS.h:
132      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
133      - make pLoad & sIceLoad always available (but still only used if
134         ATMOSPHERIC_LOADING is #define).
135    o pkg/kpp: replaced _KPP_RL with _RL
136    o bug fixes for vertical diffusivity computations when both KPP and
137        3D diffusivity arrays are used.
138    o pkg/seaice: fix bug in evp solver, while doing that
139      - change (improve?) discretization of stress computations for both
140        cgrid-lsr and evp solver
141      - add a new routine to compute strain rates
142      - the above changes lab_sea results
143      - add no slip conditions for evp solver (off by default), lsr-version
144        may follow
145      - fix exchange for shear at Z-points (does not change lab_sea)
146      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
147        (to force the user to pick a time step since there is not "safe" way
148        of choosing it)
149      - add principal stress diagnostics
150      - rearrange fields for evp a little to avoid having to call a: too many
151        exchanges and b: exchanges for stress trensor components which we do
152        not have.
153      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
154        of evp, complete rewrite for lsr case (latter is does not yet work
155        in all cases)
156    o pkg/kpp: add code to have mixing in shelf ice caverns
157      - add myThid to all kpp routines (long overdue)
158    
159    checkpoint59
160    o pkg/exf:
161      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
162        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
163      - move exf header files from lower_case.h to UPPER_CASE.h ;
164        add missing cvs Header & Name
165      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
166      - add namelist param. selectStressGridPosition, exf_monFreq
167      - retire many _CLIM routines, and remove data.exf_clim
168        + params moved to data.exf
169        + climsst, climsss now handled by exf_set_gen, i.e.
170          climss?period=0 refers to constant field,
171          climss?period=-12 to monthly forcing
172      - split up namelists in data.exf
173    o pkg/seaice:
174      - remove seaice_exch and seaice_exch_uv
175      - remove superfluous exchange of theta
176      - add myThid to seaice_budget_ocean/ice
177      - add new interface for atmospheric wind forcing (C-grid only)
178        + new routine
179        + two new field (taux, tauy for stress over ice)
180        + removed one global field (DAIRN) for C-grid case only
181    o pkg/thsise
182      - 2nd set of modifs for thsice adjoint in conjunction with exf
183    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
184    
185    checkpoint58y_post
186    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
187      vertical diffusivity, similar to that in MOM4; turned on using
188      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
189      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
190    o Added capability for 3D specification of background vertical diffusion
191      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
192      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
193      "data" file that contains the 3D vertical diffusivity coefficients.
194    o ice dynamics (pkg/seaice) with thsice thermodynamics:
195      - add code within pkg thsice to advect & diffuse sea-ice fields
196      similar to (and will replace) what has been added in  seaice_advdiff.F,
197      but: - conserving Mass, Heat & Salt.
198           - better when using non-linear advection scheme (not yet fully tested)
199           - can also be used in atmospheric set-up (for now, only the diffusion).
200    
201    checkpoint58x_post
202    o IO option for global-file compact format:
203      - add options when generating topology (utils/exch2/matlab-topology-generator)
204      - add I/O capability (pkg/mdsio).
205      - adapt utils/matlab/rdmds.m to read this format.
206      for now long-line format not yet supported by pkg/mdsio (& exch2).
207    o shelfice: add a few diagnostics
208    
209    checkpoint58w_post
210    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
211      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
212      (and replace horiVertRatio in NH code).
213      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
214                         and tutorial_plume_on_slope (sensitive to truncation)
215    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
216      directly to drive seaice model (C-grid only)
217    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
218     - reintroduce computation of wind from stress,
219     - compute tau (in exf_bulkformulae.F) from windstress averaged to
220       mass points to avoid tau = 0
221     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
222    o rdmnc.m: make it work with "global" files created with gluemnc
223    o rdmnc.m : some improvements in dealing with singleton dimension
224      (tested on all testreport mnc output files).
225    o genmake2: disable pkg/profiles if netcdf test fails.
226    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
227    o move call to cal_readparms up to make calendar parameters/variable available
228      to all packages
229    
230    checkpoint58v_post
231    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
232      useDynP_inEos_Zc tested.
233    o pkg/exf: changes to properly interpolate/mask/scale initial fields
234    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
235      and portions thereof.  See read_cs.txt for description and examples.
236    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
237      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
238      following the great-circle arc between those 2 points.
239    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
240      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
241    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
242     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
243     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
244     - still needs work (not working with some options ; efficiency to improve)
245       and serious testing.
246     - use this scheme for temperature & salinity in 2 advection test exp.:
247       advect_xy & advect_xz, respectively.
248    
249    checkpoint58u_post
250    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
251    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
252    o testreport: add option "-skipdir" to skip some test.
253    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
254      momentum calculation.
255    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
256    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
257      remove checkpoint.F and the_correction_step.F (no longer used);
258      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
259    o add option (linFSConserveTr) to correct for tracer source/sink due to
260      Linear Free surface
261    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
262    o pkg/thsice: fix reading mnc-pickups
263    
264    checkpoint58t_post
265    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
266    o pkg/mdsio:
267     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
268       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
269       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
270     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
271     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
272       either MDS_READ_FIELD or MDS_WRITE_FIELD )
273     - new S/R (to replace MDSWRITEMETA), which allows to write more
274       informations (variable names, time ...) to meta files.
275     - modify rdmds.m to give back the meta file content.
276    o pkg/diagnostics: change vertical interpolation to be safer, and more
277       flexible (define p-levels to interpolate to in data.diagnostics);
278      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
279       diagnostic pointer.
280    o pkg/seaice: more cleaning up of seaice_growth, added many comments
281    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
282    o fix multi-category seaice:
283     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
284       SEAICE_MULTICATEGORY
285     - fix short wave heat flux
286    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
287       and allow to use EVP solver. Change forward lab_sea: test both EVP
288       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
289    o Initial check-in of lab_sea adjoint
290      (very similar to natl_box_adjoint/code_seaice)
291      * used C-grid and EVP solver
292      * used KPP, GM/Redi
293      * uses inAdExact=.TRUE.
294      * gradient checks fail for both ADM and TLM
295        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
296        f.d. gradients actually seem more problematic than ADM, TLM gradients;
297        issue is related to forward mismatch between g77 an ifort
298    o pkg/seaice: overhaul of thermodynamics
299     - growth.F and groatb.F are replaced by new routine seaice_growth.F
300     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
301     - move a few global fields out of SEAICE.h into seaice_growth.F and
302       make them 2D (FICE/QNETO/ ...)
303     - remove FO (it is the same as QNETO)
304     - introduce a few local fields to avoid modifying external fields such
305       as atemp, etc.
306    
307    checkpoint58s_post
308    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
309      changed exf_set_gen.F so that
310        genperiod=0 means input file is one time-constant field and
311        genperiod=-12 means input file contains 12 monthly means
312    o CG2D: use pre-computed solver main-diagonal (stored in common block);
313      this affects truncation error ; generate new output file for exp. which
314      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
315        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
316        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
317        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
318        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
319        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
320    o start implementation of deep-atmosphere and anelastic formulation
321    o verification: remove 2nd copy of input files and use script "prepare_run"
322      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
323    o mom_common/vecinv/fluxform: fix a few initialisation isssues
324    o profiles: fix for multithreaded case
325    
326    o diagnostics: rename few diags:
327      s/'PRESSURE'/'RCENTER '/g
328      s/'TICE    '/'oceFreez'/g
329      s/'TAUX    '/'oceTAUX '/g
330      s/'TAUY    '/'oceTAUY '/g
331      s/'SWFLUX  '/'oceQsw  '/g
332      s/DIFx/DFxE/g
333      s/DIFy/DFyE/g
334      and add few ocean-forcing diagnostics:
335      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
336    o modifications to pkg/seaice/growth.F and budget.F, which change results of
337      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
338      as actual snow thickness.  It now refers everywhere to effective snow
339      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
340    
341    checkpoint58r_post
342    o modifications to pkg/seaice/growth.F, which change results of
343      lab_sea experiment: fixes pertain to melting snow over open water, to
344      masking EVAP under sea ice, and to using the correct AREA variable for
345      computations of EVAP, PRECIP, HSNOW, and GHEFF
346    o add ability to read bathy, salt, and theta using MNC (off by def)
347    o add flooding algorithm and advection of HSNOW for pkg/seaice;
348      both are turned off by default and do no change any results
349    o seaice advection with pkg/thsice: a step toward the use of non-linear
350      advection scheme, but #ifdef or commented out for now (requires more EXCH).
351    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
352      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
353      in natl_box (affects results @ truncation level: update output.txt)
354    o multi-threading and IO:
355      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
356      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
357        (needed to work with SingleCpuIO): tested in all verif. exp.
358    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
359      affects the results (but none of the verification test uses this scheme).
360    o Adding some pkg/diagnostics capability to pkg/seaice
361      (will certainly be subject to changes)
362    o ctrl: adding new control variables:
363      lwflux, lwdown, evap, snowprecip, apressure, runoff
364    
365    checkpoint58q_post
366    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
367      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
368      high_res_cube configuration by 4% on Columbia.
369    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
370      add (in global_with_exf/code) a version of EXF_INTERP_READ without
371      dynamical allocation (seems to work in multi-threaded).
372    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
373      single CPU io) so that TAF does not have to see EESUPPORT.h
374  o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)  o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
375    
376  checkpoint58p_post  checkpoint58p_post

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