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revision 1.729 by jmc, Fri Oct 6 19:44:51 2006 UTC revision 1.837 by mlosch, Sun Jun 17 09:22:06 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: fix another bug in the LSR no-slip boundary conditons
8    o dependencies: pkg/profiles requires pkg/cal
9    o pkg/profiles:
10     - added option ALLOW_PROFILES_GENERICGRID
11         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
12         that interpolation information (grid points and coefficients) is provided
13         within the netcdf input files.
14         -> sample matlab scripts can be found in MITgcm_contrib/gael
15         that allow you to prepare netcdf input files.
16     - also modified: cleaner include statements, cleaner error print statements,
17       cleaner stops when error, and more tests of the netcdf input files consistency.
18    
19    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
20    o pkg/seaice:
21     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
22       requires a new routine: seaice_diagnostics_fill.F
23     - make sure that seaice does not move if not forced (pressure replacement
24       method, Hibler and Ip, 1995), changes results
25     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
26     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
27       It is turned off by default (=-1.), because it changes the results.
28     - make it possible to read AREA from a file, too.
29    
30    checkpoint59c
31    o add S/R and diagnostics for oceanic mixed-layer depth
32    o move GMRedi call after all vertical mixing schemes (including KPP)
33    o pkg/thsice:
34     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
35      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
36    o pkg/obcs:
37     - bug fix for balance code
38    o pkg/seaice:
39      - allow values of SEAICE_elasticParm > 1
40      - add new parameter SEAICE_evpTauRelax as an alternative
41        to SEAICE_elasticParm
42      - make lsr boundary conditions free slip (by default), changes result
43      - add code for no slip boundary conditions for lsr
44      - set minimum of zeta to zero (and not 4e8) (changes results)
45      - add a cap on AREA after advecting AREA if seaice_growth is not called
46    o change calculation of Visbeck K:
47      - no longer depend on tapering scheme; instead, compute slope (limited
48        by GM_maxSlope). this is equivalent to what was comuted before with
49        clipping or linear tappering.
50      - fix vertical averaging (wrong by 1/2 level)
51      - leave the old version (but will not be maintained) within
52        #ifdef OLD_VISBECK_CALC / #endif
53      - update output of exp. ideal_2D_oce
54    o change error catch in calc_r_star to improve vectorization
55    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
56      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
57    o adjoint:
58      Re-organized adjoint checkpointing according to Matt Mazloff
59      (but with modifs/completions/cleanups)
60      Storing is now bundled into large arrays to optimized I/O
61      (and second step in cleanup of the_main_loop)
62    
63    checkpoint59b
64    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
65      - export/import (between ocean & coupler) fields needed for ocean DIC.
66    o pkg/seaice:
67      - get rid of three more exchanges seaice_calc_viscosities (required
68        different loop boundaries in seaice_lsr and seaice_ocean_stress)
69      - bug fix in seaice_ocean_stress (update of lab_sea required)
70      - reduce loop boundaries to necessary minimum also in seaice_evp
71      - go back to the old way of computing deltaC/Z as the adjoint likes that
72        better
73    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
74      passive tracer to an Age Tracer) + update output.txt
75    o pkg/exf:
76      - implement A-grid / C-grid selection for wind-stress input files.
77      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
78      for now, in exf_bulk_largeyeager04.F only :
79      - change implementation for case where windspeed + 2. components wind-stress
80        are read-in. AND use rhoConstFresh to convert evap.
81    o pkg/seaice:
82      - use correct EXCH_UV for wind-forcing (on A-grid).
83      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
84        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
85    o pkg/exf:
86      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
87      EXF_INTERPOLATION:
88      - merge global_with_exf/code version of exf_interp_read.F
89        to the main code ;
90      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
91        reading the file ; Important: This options needs to be defined to recover
92        previous code.
93        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
94      - no longer loose real*8 precision along the way when using exf_iprec=64.
95    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
96      - change discretisation of evp-solver in order to avoid another exchange
97        (changes lab_sea) and clean up a little
98      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
99        help the adjoint (this also changes the results slightly)
100      - add a few "_d 0" where they had been missing in seaice_evp.F
101      - cleaning up: remove unused seaice_calc_rhs.F
102    o pkg/exf: some cleaning-up:
103      - change various "constants" into runtime parameters
104      - cleaned-up Large&Yeager04 routine which should eventually
105        replace exf_bulkformulae.F (changed names of S/R and CPP)
106        and merged various ALLOW_ATM_WIND options
107     only used with thsice pkg (in thsice_get_exf.F):
108      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
109        which are used when useStabilityFct_overIce=TRUE (= the default)
110      - change default values of ice & snow emissivity and scale downward LW
111        by ice & snow emissivity.
112    o pkg/thsice:
113     fix few little problems, in thsice_calc_thickn.F:
114      - growth vertically (and not laterally) if iceFrac == iceMaskMax
115      - melt only laterally if hIce < hThinIce (as the comments say)
116      and in thsice_extend.F:
117      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
118      - start to form ice as soon as the minimum ice-volume is reachable.
119     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
120      and cpl_aim+ocn
121    o pkg/kpp
122     - move computation of surface related input fields to KPP into a new
123       subroutine kpp_forcing_surf.F
124     - remove wrong (within bi,bj loops) EXCH calls.
125     - little cleaning (add argument myThid in last position, cvs header ...)
126     - for now, fix conservation problem by exchanging KPPviscAz (may not
127       be the best fix)
128    o pkg/seaice
129     - check for inconsistent evp parameter/cpp-flag combination
130     - remove leftover errIO flat for obsolete name list error handling
131    o OpenAD
132     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
133    
134    checkpoint59a
135    o pkg/seaice: some parameter clarifications and a little bit of clean up
136    o pkg/thsice: rename run-time parameters:
137       himin       -> hIceMin
138       himin0      -> hThinIce
139       hihig       -> hThickIce
140       i0          -> i0swFrac
141       transCoef   -> bMeltCoef
142       frac_energy -> fracMelting
143      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
144       with default values (for now) that do not change the results.
145      remove old version of thsice vars advection in pkg/seaice.
146    o in FFIELDS.h:
147      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
148      - make pLoad & sIceLoad always available (but still only used if
149         ATMOSPHERIC_LOADING is #define).
150    o pkg/kpp: replaced _KPP_RL with _RL
151    o bug fixes for vertical diffusivity computations when both KPP and
152        3D diffusivity arrays are used.
153    o pkg/seaice: fix bug in evp solver, while doing that
154      - change (improve?) discretization of stress computations for both
155        cgrid-lsr and evp solver
156      - add a new routine to compute strain rates
157      - the above changes lab_sea results
158      - add no slip conditions for evp solver (off by default), lsr-version
159        may follow
160      - fix exchange for shear at Z-points (does not change lab_sea)
161      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
162        (to force the user to pick a time step since there is not "safe" way
163        of choosing it)
164      - add principal stress diagnostics
165      - rearrange fields for evp a little to avoid having to call a: too many
166        exchanges and b: exchanges for stress trensor components which we do
167        not have.
168      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
169        of evp, complete rewrite for lsr case (latter is does not yet work
170        in all cases)
171    o pkg/kpp: add code to have mixing in shelf ice caverns
172      - add myThid to all kpp routines (long overdue)
173    
174    checkpoint59
175    o pkg/exf:
176      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
177        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
178      - move exf header files from lower_case.h to UPPER_CASE.h ;
179        add missing cvs Header & Name
180      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
181      - add namelist param. selectStressGridPosition, exf_monFreq
182      - retire many _CLIM routines, and remove data.exf_clim
183        + params moved to data.exf
184        + climsst, climsss now handled by exf_set_gen, i.e.
185          climss?period=0 refers to constant field,
186          climss?period=-12 to monthly forcing
187      - split up namelists in data.exf
188    o pkg/seaice:
189      - remove seaice_exch and seaice_exch_uv
190      - remove superfluous exchange of theta
191      - add myThid to seaice_budget_ocean/ice
192      - add new interface for atmospheric wind forcing (C-grid only)
193        + new routine
194        + two new field (taux, tauy for stress over ice)
195        + removed one global field (DAIRN) for C-grid case only
196    o pkg/thsise
197      - 2nd set of modifs for thsice adjoint in conjunction with exf
198    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
199    
200    checkpoint58y_post
201    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
202      vertical diffusivity, similar to that in MOM4; turned on using
203      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
204      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
205    o Added capability for 3D specification of background vertical diffusion
206      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
207      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
208      "data" file that contains the 3D vertical diffusivity coefficients.
209    o ice dynamics (pkg/seaice) with thsice thermodynamics:
210      - add code within pkg thsice to advect & diffuse sea-ice fields
211      similar to (and will replace) what has been added in  seaice_advdiff.F,
212      but: - conserving Mass, Heat & Salt.
213           - better when using non-linear advection scheme (not yet fully tested)
214           - can also be used in atmospheric set-up (for now, only the diffusion).
215    
216    checkpoint58x_post
217    o IO option for global-file compact format:
218      - add options when generating topology (utils/exch2/matlab-topology-generator)
219      - add I/O capability (pkg/mdsio).
220      - adapt utils/matlab/rdmds.m to read this format.
221      for now long-line format not yet supported by pkg/mdsio (& exch2).
222    o shelfice: add a few diagnostics
223    
224    checkpoint58w_post
225    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
226      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
227      (and replace horiVertRatio in NH code).
228      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
229                         and tutorial_plume_on_slope (sensitive to truncation)
230    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
231      directly to drive seaice model (C-grid only)
232    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
233     - reintroduce computation of wind from stress,
234     - compute tau (in exf_bulkformulae.F) from windstress averaged to
235       mass points to avoid tau = 0
236     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
237    o rdmnc.m: make it work with "global" files created with gluemnc
238    o rdmnc.m : some improvements in dealing with singleton dimension
239      (tested on all testreport mnc output files).
240    o genmake2: disable pkg/profiles if netcdf test fails.
241    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
242    o move call to cal_readparms up to make calendar parameters/variable available
243      to all packages
244    
245    checkpoint58v_post
246    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
247      useDynP_inEos_Zc tested.
248    o pkg/exf: changes to properly interpolate/mask/scale initial fields
249    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
250      and portions thereof.  See read_cs.txt for description and examples.
251    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
252      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
253      following the great-circle arc between those 2 points.
254    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
255      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
256    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
257     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
258     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
259     - still needs work (not working with some options ; efficiency to improve)
260       and serious testing.
261     - use this scheme for temperature & salinity in 2 advection test exp.:
262       advect_xy & advect_xz, respectively.
263    
264    checkpoint58u_post
265    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
266    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
267    o testreport: add option "-skipdir" to skip some test.
268    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
269      momentum calculation.
270    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
271    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
272      remove checkpoint.F and the_correction_step.F (no longer used);
273      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
274    o add option (linFSConserveTr) to correct for tracer source/sink due to
275      Linear Free surface
276    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
277    o pkg/thsice: fix reading mnc-pickups
278    
279    checkpoint58t_post
280    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
281    o pkg/mdsio:
282     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
283       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
284       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
285     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
286     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
287       either MDS_READ_FIELD or MDS_WRITE_FIELD )
288     - new S/R (to replace MDSWRITEMETA), which allows to write more
289       informations (variable names, time ...) to meta files.
290     - modify rdmds.m to give back the meta file content.
291    o pkg/diagnostics: change vertical interpolation to be safer, and more
292       flexible (define p-levels to interpolate to in data.diagnostics);
293      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
294       diagnostic pointer.
295    o pkg/seaice: more cleaning up of seaice_growth, added many comments
296    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
297    o fix multi-category seaice:
298     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
299       SEAICE_MULTICATEGORY
300     - fix short wave heat flux
301    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
302       and allow to use EVP solver. Change forward lab_sea: test both EVP
303       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
304    o Initial check-in of lab_sea adjoint
305      (very similar to natl_box_adjoint/code_seaice)
306      * used C-grid and EVP solver
307      * used KPP, GM/Redi
308      * uses inAdExact=.TRUE.
309      * gradient checks fail for both ADM and TLM
310        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
311        f.d. gradients actually seem more problematic than ADM, TLM gradients;
312        issue is related to forward mismatch between g77 an ifort
313    o pkg/seaice: overhaul of thermodynamics
314     - growth.F and groatb.F are replaced by new routine seaice_growth.F
315     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
316     - move a few global fields out of SEAICE.h into seaice_growth.F and
317       make them 2D (FICE/QNETO/ ...)
318     - remove FO (it is the same as QNETO)
319     - introduce a few local fields to avoid modifying external fields such
320       as atemp, etc.
321    
322    checkpoint58s_post
323    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
324      changed exf_set_gen.F so that
325        genperiod=0 means input file is one time-constant field and
326        genperiod=-12 means input file contains 12 monthly means
327    o CG2D: use pre-computed solver main-diagonal (stored in common block);
328      this affects truncation error ; generate new output file for exp. which
329      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
330        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
331        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
332        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
333        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
334        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
335    o start implementation of deep-atmosphere and anelastic formulation
336    o verification: remove 2nd copy of input files and use script "prepare_run"
337      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
338    o mom_common/vecinv/fluxform: fix a few initialisation isssues
339    o profiles: fix for multithreaded case
340    
341    o diagnostics: rename few diags:
342      s/'PRESSURE'/'RCENTER '/g
343      s/'TICE    '/'oceFreez'/g
344      s/'TAUX    '/'oceTAUX '/g
345      s/'TAUY    '/'oceTAUY '/g
346      s/'SWFLUX  '/'oceQsw  '/g
347      s/DIFx/DFxE/g
348      s/DIFy/DFyE/g
349      and add few ocean-forcing diagnostics:
350      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
351    o modifications to pkg/seaice/growth.F and budget.F, which change results of
352      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
353      as actual snow thickness.  It now refers everywhere to effective snow
354      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
355    
356    checkpoint58r_post
357    o modifications to pkg/seaice/growth.F, which change results of
358      lab_sea experiment: fixes pertain to melting snow over open water, to
359      masking EVAP under sea ice, and to using the correct AREA variable for
360      computations of EVAP, PRECIP, HSNOW, and GHEFF
361    o add ability to read bathy, salt, and theta using MNC (off by def)
362    o add flooding algorithm and advection of HSNOW for pkg/seaice;
363      both are turned off by default and do no change any results
364    o seaice advection with pkg/thsice: a step toward the use of non-linear
365      advection scheme, but #ifdef or commented out for now (requires more EXCH).
366    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
367      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
368      in natl_box (affects results @ truncation level: update output.txt)
369    o multi-threading and IO:
370      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
371      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
372        (needed to work with SingleCpuIO): tested in all verif. exp.
373    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
374      affects the results (but none of the verification test uses this scheme).
375    o Adding some pkg/diagnostics capability to pkg/seaice
376      (will certainly be subject to changes)
377    o ctrl: adding new control variables:
378      lwflux, lwdown, evap, snowprecip, apressure, runoff
379    
380    checkpoint58q_post
381    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
382      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
383      high_res_cube configuration by 4% on Columbia.
384    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
385      add (in global_with_exf/code) a version of EXF_INTERP_READ without
386      dynamical allocation (seems to work in multi-threaded).
387    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
388      single CPU io) so that TAF does not have to see EESUPPORT.h
389  o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)  o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
390    
391  checkpoint58p_post  checkpoint58p_post

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