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revision 1.631 by mlosch, Wed Mar 15 15:05:53 2006 UTC revision 1.865 by jmc, Mon Aug 27 22:21:37 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/thsice:
8     - fix reshaping of sea-ice just after advection:
9       melt all the ice only if ice-volume is too small.
10     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
11       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
12     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
13    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
14      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
15    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
16      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
17      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
18      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
19      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
20      -> update output.txt
21    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
22     this affects truncation error: -> update output.txt of exp:
23      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
24      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
25    
26    checkpoint59f
27    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
28    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
29      a bounded range (in forward mode)
30    o pkg/ecco, ctrl, autodiff and mom_common:
31     internal parameter controls, completements of implementations
32    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
33    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
34      (not seem any difference in testing results).
35    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
36       at face corners.
37    o pkg/generic_advdiff:
38     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
39      loop range indices for computing vertical advection tendency
40      and do the calculation in the interior only (no overlap) ;
41      for now, only implemented for SOM advection (to save CPU time).
42     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
43    o exch2 adjoint
44      First set of changes:
45      - add exch2 hand-written adjoint templates
46      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
47        This will require cleanup in pkg/autodiff/*.F
48        (changed routines currently kept separate in verif. code/)
49      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
50        that used to hide exch2 or cubed-sphere specific code
51        (commented via 'cph-exch2')
52    o pkg/seaice
53      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
54    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
55       output of global_ocean.cs32x15.thsice .
56    
57    checkpoint59e
58    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
59      for B-grid vector (not yet tested) and C-grid vector (<- only used
60      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
61    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
62      (#ifdef ALLOW_SALT_PLUME)
63    o gather_2d/scatter_2d: removed halo regions
64    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
65      scheme and the corresponding test case (under front_relax dir). For now,
66      only available with Skew-flux form and not yet tested in realistic set-up.
67      adjoint: store directives updated, but gradient checks deteriorated,
68      so maybe GM/Redi adjoint is now broken.
69    o seaice adjoint
70      * add AREA, HEFF, HSNOW as control variable
71        (should not change lab_sea results)
72      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
73    o pkg/seaice:
74      * added computation of saltFlux in seaice_growth;
75        For time being, sea ice salinity is assumed constant
76        contribution of snow flooding to freshening of sea ice is neglected.
77        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
78        defaults to 0.0 in order to maintain backward compatibility.
79        Typical values for SEAICE_salinity are 4 to 10 g/kg.
80      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
81      * added SEAICE_availHeatFrac, which specifies fraction of surface level
82        heat content used to melt or grow ice
83      * commented out cap of HICE: it helps keep ice thinner
84      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
85      * applied OBCS T/S mask to HEFFM sea ice mask
86    
87    checkpoint59d
88    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
89     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
90     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
91    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
92     and change default value of parameter "GM_Small_Number";
93     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
94       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
95       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
96    o pkg/ecco: cost function when applying pkg/smooth to controls
97    o pkg/ctrl: add forcingPrecond run time parameter
98    o pkg/seaice:
99     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
100     - fix bug in metric terms of u-equation in LSR solver (implicit part),
101       changes verification/lab_sea
102     - rearrange implicit part of u-equation in LSR solver to make it easier to
103       read, understand, and debug. This causes changes at the truncation level.
104     - fix (serious) bug in the boundary conditions (sign error in the implicit
105       part) of the LSR solver. Changes all LSR results.
106     - fixed problem with HSNOW initialization to avoid thick snow when AREA
107       is initilized with small values - does not change lab_sea results.
108     - added HsnowFile initialization capability
109    o pkg/smooth: addition to model/src and pkg/ctrl so allow
110     initialization of pkg/smooth and application to control vector
111    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
112    o dependencies: pkg/profiles requires pkg/cal
113    o pkg/profiles:
114     - added option ALLOW_PROFILES_GENERICGRID
115         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
116         that interpolation information (grid points and coefficients) is provided
117         within the netcdf input files.
118         -> sample matlab scripts can be found in MITgcm_contrib/gael
119         that allow you to prepare netcdf input files.
120     - also modified: cleaner include statements, cleaner error print statements,
121       cleaner stops when error, and more tests of the netcdf input files consistency.
122    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
123    o pkg/seaice:
124     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
125       requires a new routine: seaice_diagnostics_fill.F
126     - make sure that seaice does not move if not forced (pressure replacement
127       method, Hibler and Ip, 1995), changes results
128     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
129     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
130       It is turned off by default (=-1.), because it changes the results.
131     - make it possible to read AREA from a file, too.
132    
133    checkpoint59c
134    o add S/R and diagnostics for oceanic mixed-layer depth
135    o move GMRedi call after all vertical mixing schemes (including KPP)
136    o pkg/thsice:
137     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
138      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
139    o pkg/obcs:
140     - bug fix for balance code
141    o pkg/seaice:
142      - allow values of SEAICE_elasticParm > 1
143      - add new parameter SEAICE_evpTauRelax as an alternative
144        to SEAICE_elasticParm
145      - make lsr boundary conditions free slip (by default), changes result
146      - add code for no slip boundary conditions for lsr
147      - set minimum of zeta to zero (and not 4e8) (changes results)
148      - add a cap on AREA after advecting AREA if seaice_growth is not called
149    o change calculation of Visbeck K:
150      - no longer depend on tapering scheme; instead, compute slope (limited
151        by GM_maxSlope). this is equivalent to what was comuted before with
152        clipping or linear tappering.
153      - fix vertical averaging (wrong by 1/2 level)
154      - leave the old version (but will not be maintained) within
155        #ifdef OLD_VISBECK_CALC / #endif
156      - update output of exp. ideal_2D_oce
157    o change error catch in calc_r_star to improve vectorization
158    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
159      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
160    o adjoint:
161      Re-organized adjoint checkpointing according to Matt Mazloff
162      (but with modifs/completions/cleanups)
163      Storing is now bundled into large arrays to optimized I/O
164      (and second step in cleanup of the_main_loop)
165    
166    checkpoint59b
167    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
168      - export/import (between ocean & coupler) fields needed for ocean DIC.
169    o pkg/seaice:
170      - get rid of three more exchanges seaice_calc_viscosities (required
171        different loop boundaries in seaice_lsr and seaice_ocean_stress)
172      - bug fix in seaice_ocean_stress (update of lab_sea required)
173      - reduce loop boundaries to necessary minimum also in seaice_evp
174      - go back to the old way of computing deltaC/Z as the adjoint likes that
175        better
176    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
177      passive tracer to an Age Tracer) + update output.txt
178    o pkg/exf:
179      - implement A-grid / C-grid selection for wind-stress input files.
180      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
181      for now, in exf_bulk_largeyeager04.F only :
182      - change implementation for case where windspeed + 2. components wind-stress
183        are read-in. AND use rhoConstFresh to convert evap.
184    o pkg/seaice:
185      - use correct EXCH_UV for wind-forcing (on A-grid).
186      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
187        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
188    o pkg/exf:
189      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
190      EXF_INTERPOLATION:
191      - merge global_with_exf/code version of exf_interp_read.F
192        to the main code ;
193      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
194        reading the file ; Important: This options needs to be defined to recover
195        previous code.
196        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
197      - no longer loose real*8 precision along the way when using exf_iprec=64.
198    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
199      - change discretisation of evp-solver in order to avoid another exchange
200        (changes lab_sea) and clean up a little
201      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
202        help the adjoint (this also changes the results slightly)
203      - add a few "_d 0" where they had been missing in seaice_evp.F
204      - cleaning up: remove unused seaice_calc_rhs.F
205    o pkg/exf: some cleaning-up:
206      - change various "constants" into runtime parameters
207      - cleaned-up Large&Yeager04 routine which should eventually
208        replace exf_bulkformulae.F (changed names of S/R and CPP)
209        and merged various ALLOW_ATM_WIND options
210     only used with thsice pkg (in thsice_get_exf.F):
211      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
212        which are used when useStabilityFct_overIce=TRUE (= the default)
213      - change default values of ice & snow emissivity and scale downward LW
214        by ice & snow emissivity.
215    o pkg/thsice:
216     fix few little problems, in thsice_calc_thickn.F:
217      - growth vertically (and not laterally) if iceFrac == iceMaskMax
218      - melt only laterally if hIce < hThinIce (as the comments say)
219      and in thsice_extend.F:
220      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
221      - start to form ice as soon as the minimum ice-volume is reachable.
222     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
223      and cpl_aim+ocn
224    o pkg/kpp
225     - move computation of surface related input fields to KPP into a new
226       subroutine kpp_forcing_surf.F
227     - remove wrong (within bi,bj loops) EXCH calls.
228     - little cleaning (add argument myThid in last position, cvs header ...)
229     - for now, fix conservation problem by exchanging KPPviscAz (may not
230       be the best fix)
231    o pkg/seaice
232     - check for inconsistent evp parameter/cpp-flag combination
233     - remove leftover errIO flat for obsolete name list error handling
234    o OpenAD
235     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
236    
237    checkpoint59a
238    o pkg/seaice: some parameter clarifications and a little bit of clean up
239    o pkg/thsice: rename run-time parameters:
240       himin       -> hIceMin
241       himin0      -> hThinIce
242       hihig       -> hThickIce
243       i0          -> i0swFrac
244       transCoef   -> bMeltCoef
245       frac_energy -> fracMelting
246      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
247       with default values (for now) that do not change the results.
248      remove old version of thsice vars advection in pkg/seaice.
249    o in FFIELDS.h:
250      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
251      - make pLoad & sIceLoad always available (but still only used if
252         ATMOSPHERIC_LOADING is #define).
253    o pkg/kpp: replaced _KPP_RL with _RL
254    o bug fixes for vertical diffusivity computations when both KPP and
255        3D diffusivity arrays are used.
256    o pkg/seaice: fix bug in evp solver, while doing that
257      - change (improve?) discretization of stress computations for both
258        cgrid-lsr and evp solver
259      - add a new routine to compute strain rates
260      - the above changes lab_sea results
261      - add no slip conditions for evp solver (off by default), lsr-version
262        may follow
263      - fix exchange for shear at Z-points (does not change lab_sea)
264      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
265        (to force the user to pick a time step since there is not "safe" way
266        of choosing it)
267      - add principal stress diagnostics
268      - rearrange fields for evp a little to avoid having to call a: too many
269        exchanges and b: exchanges for stress trensor components which we do
270        not have.
271      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
272        of evp, complete rewrite for lsr case (latter is does not yet work
273        in all cases)
274    o pkg/kpp: add code to have mixing in shelf ice caverns
275      - add myThid to all kpp routines (long overdue)
276    
277    checkpoint59
278    o pkg/exf:
279      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
280        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
281      - move exf header files from lower_case.h to UPPER_CASE.h ;
282        add missing cvs Header & Name
283      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
284      - add namelist param. selectStressGridPosition, exf_monFreq
285      - retire many _CLIM routines, and remove data.exf_clim
286        + params moved to data.exf
287        + climsst, climsss now handled by exf_set_gen, i.e.
288          climss?period=0 refers to constant field,
289          climss?period=-12 to monthly forcing
290      - split up namelists in data.exf
291    o pkg/seaice:
292      - remove seaice_exch and seaice_exch_uv
293      - remove superfluous exchange of theta
294      - add myThid to seaice_budget_ocean/ice
295      - add new interface for atmospheric wind forcing (C-grid only)
296        + new routine
297        + two new field (taux, tauy for stress over ice)
298        + removed one global field (DAIRN) for C-grid case only
299    o pkg/thsise
300      - 2nd set of modifs for thsice adjoint in conjunction with exf
301    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
302    
303    checkpoint58y_post
304    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
305      vertical diffusivity, similar to that in MOM4; turned on using
306      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
307      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
308    o Added capability for 3D specification of background vertical diffusion
309      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
310      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
311      "data" file that contains the 3D vertical diffusivity coefficients.
312    o ice dynamics (pkg/seaice) with thsice thermodynamics:
313      - add code within pkg thsice to advect & diffuse sea-ice fields
314      similar to (and will replace) what has been added in  seaice_advdiff.F,
315      but: - conserving Mass, Heat & Salt.
316           - better when using non-linear advection scheme (not yet fully tested)
317           - can also be used in atmospheric set-up (for now, only the diffusion).
318    
319    checkpoint58x_post
320    o IO option for global-file compact format:
321      - add options when generating topology (utils/exch2/matlab-topology-generator)
322      - add I/O capability (pkg/mdsio).
323      - adapt utils/matlab/rdmds.m to read this format.
324      for now long-line format not yet supported by pkg/mdsio (& exch2).
325    o shelfice: add a few diagnostics
326    
327    checkpoint58w_post
328    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
329      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
330      (and replace horiVertRatio in NH code).
331      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
332                         and tutorial_plume_on_slope (sensitive to truncation)
333    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
334      directly to drive seaice model (C-grid only)
335    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
336     - reintroduce computation of wind from stress,
337     - compute tau (in exf_bulkformulae.F) from windstress averaged to
338       mass points to avoid tau = 0
339     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
340    o rdmnc.m: make it work with "global" files created with gluemnc
341    o rdmnc.m : some improvements in dealing with singleton dimension
342      (tested on all testreport mnc output files).
343    o genmake2: disable pkg/profiles if netcdf test fails.
344    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
345    o move call to cal_readparms up to make calendar parameters/variable available
346      to all packages
347    
348    checkpoint58v_post
349    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
350      useDynP_inEos_Zc tested.
351    o pkg/exf: changes to properly interpolate/mask/scale initial fields
352    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
353      and portions thereof.  See read_cs.txt for description and examples.
354    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
355      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
356      following the great-circle arc between those 2 points.
357    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
358      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
359    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
360     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
361     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
362     - still needs work (not working with some options ; efficiency to improve)
363       and serious testing.
364     - use this scheme for temperature & salinity in 2 advection test exp.:
365       advect_xy & advect_xz, respectively.
366    
367    checkpoint58u_post
368    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
369    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
370    o testreport: add option "-skipdir" to skip some test.
371    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
372      momentum calculation.
373    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
374    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
375      remove checkpoint.F and the_correction_step.F (no longer used);
376      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
377    o add option (linFSConserveTr) to correct for tracer source/sink due to
378      Linear Free surface
379    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
380    o pkg/thsice: fix reading mnc-pickups
381    
382    checkpoint58t_post
383    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
384    o pkg/mdsio:
385     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
386       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
387       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
388     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
389     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
390       either MDS_READ_FIELD or MDS_WRITE_FIELD )
391     - new S/R (to replace MDSWRITEMETA), which allows to write more
392       informations (variable names, time ...) to meta files.
393     - modify rdmds.m to give back the meta file content.
394    o pkg/diagnostics: change vertical interpolation to be safer, and more
395       flexible (define p-levels to interpolate to in data.diagnostics);
396      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
397       diagnostic pointer.
398    o pkg/seaice: more cleaning up of seaice_growth, added many comments
399    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
400    o fix multi-category seaice:
401     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
402       SEAICE_MULTICATEGORY
403     - fix short wave heat flux
404    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
405       and allow to use EVP solver. Change forward lab_sea: test both EVP
406       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
407    o Initial check-in of lab_sea adjoint
408      (very similar to natl_box_adjoint/code_seaice)
409      * used C-grid and EVP solver
410      * used KPP, GM/Redi
411      * uses inAdExact=.TRUE.
412      * gradient checks fail for both ADM and TLM
413        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
414        f.d. gradients actually seem more problematic than ADM, TLM gradients;
415        issue is related to forward mismatch between g77 an ifort
416    o pkg/seaice: overhaul of thermodynamics
417     - growth.F and groatb.F are replaced by new routine seaice_growth.F
418     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
419     - move a few global fields out of SEAICE.h into seaice_growth.F and
420       make them 2D (FICE/QNETO/ ...)
421     - remove FO (it is the same as QNETO)
422     - introduce a few local fields to avoid modifying external fields such
423       as atemp, etc.
424    
425    checkpoint58s_post
426    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
427      changed exf_set_gen.F so that
428        genperiod=0 means input file is one time-constant field and
429        genperiod=-12 means input file contains 12 monthly means
430    o CG2D: use pre-computed solver main-diagonal (stored in common block);
431      this affects truncation error ; generate new output file for exp. which
432      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
433        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
434        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
435        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
436        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
437        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
438    o start implementation of deep-atmosphere and anelastic formulation
439    o verification: remove 2nd copy of input files and use script "prepare_run"
440      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
441    o mom_common/vecinv/fluxform: fix a few initialisation isssues
442    o profiles: fix for multithreaded case
443    
444    o diagnostics: rename few diags:
445      s/'PRESSURE'/'RCENTER '/g
446      s/'TICE    '/'oceFreez'/g
447      s/'TAUX    '/'oceTAUX '/g
448      s/'TAUY    '/'oceTAUY '/g
449      s/'SWFLUX  '/'oceQsw  '/g
450      s/DIFx/DFxE/g
451      s/DIFy/DFyE/g
452      and add few ocean-forcing diagnostics:
453      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
454    o modifications to pkg/seaice/growth.F and budget.F, which change results of
455      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
456      as actual snow thickness.  It now refers everywhere to effective snow
457      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
458    
459    checkpoint58r_post
460    o modifications to pkg/seaice/growth.F, which change results of
461      lab_sea experiment: fixes pertain to melting snow over open water, to
462      masking EVAP under sea ice, and to using the correct AREA variable for
463      computations of EVAP, PRECIP, HSNOW, and GHEFF
464    o add ability to read bathy, salt, and theta using MNC (off by def)
465    o add flooding algorithm and advection of HSNOW for pkg/seaice;
466      both are turned off by default and do no change any results
467    o seaice advection with pkg/thsice: a step toward the use of non-linear
468      advection scheme, but #ifdef or commented out for now (requires more EXCH).
469    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
470      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
471      in natl_box (affects results @ truncation level: update output.txt)
472    o multi-threading and IO:
473      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
474      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
475        (needed to work with SingleCpuIO): tested in all verif. exp.
476    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
477      affects the results (but none of the verification test uses this scheme).
478    o Adding some pkg/diagnostics capability to pkg/seaice
479      (will certainly be subject to changes)
480    o ctrl: adding new control variables:
481      lwflux, lwdown, evap, snowprecip, apressure, runoff
482    
483    checkpoint58q_post
484    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
485      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
486      high_res_cube configuration by 4% on Columbia.
487    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
488      add (in global_with_exf/code) a version of EXF_INTERP_READ without
489      dynamical allocation (seems to work in multi-threaded).
490    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
491      single CPU io) so that TAF does not have to see EESUPPORT.h
492    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
493    
494    checkpoint58p_post
495    o obcs: stop if obcs is used with useCDscheme = .true.
496    o shelfice:
497     - fix a sign error so that no slip at shelfice interface works
498     - remove stop for combination non-hydrostatic code and shelfice. That does
499       not mean, that the results are correct, but at least they are numerically
500       stable
501    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
502    o added adjoint exch routined for all exch*3d* routines
503      and updated flow directives
504    
505    checkpoint58o_post
506    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
507      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
508    o change controling S/R for writing pickup file (new S/R do_write_pickup)
509      and clean-up reading/writing of pickup files.
510    o fix local version of read/write pickup (NH part) in rotating_tank/code
511    o simplify EXCH interface:
512     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
513     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
514    o added the regrid package
515    o shelfice:
516     - add a simple boundary layer scheme to reduce noise
517     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
518    
519    checkpoint58n_post
520    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
521       local variable (not in common block).
522    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
523      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
524      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
525        to work with SingleCpuIO.
526    o add "_d 0" to real constant of pkg/cfc subroutines ;
527       update exp. cfc_exemple & tutorial_cfc_offline output files.
528    o multi-threading and IO:
529      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
530        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
531      - barrier before and after reading.
532      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
533      - avoid using MDS_WRITELOCAL for LAND pkg output.
534      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
535        common-block variables ; Allows multi-threading with master-thread IO.
536    o change default MAX_NO_THREADS from 32 to 4 ;
537      and stop cleanly when MAX_NO_THREADS is too small.
538    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
539    
540    checkpoint58m_post
541    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
542       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
543    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
544       keep global_ocean.90x40x15 (for AD testing) with former secondary test
545       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
546    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
547        add MITgcm_tutorials (= code + all the tutorials)
548    o ecco, option to compute cost for total ssh (mean+anom)
549    o consistent with addition of ptracer and ssh in pkg/profiles
550    o profiles: adding ptracer and ssh
551    o testreport: change multi-test output-file name
552      (from output.txt.{name} to output.{name}.txt)
553    o profiles: now ok for mutli-tiles case
554    o seaice: add 4 parameters for different advection schemes for area,
555      (effective) seaice thickness, enthalphy, and snow height. Their default
556      is the standard parameter SEAICEadvScheme
557    o calc_gw:
558     - add cosFacU in zonal viscous flux (harmonic.visc.).
559     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
560       of tutorial_plume_on_slope.
561    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
562    o calc_gw: true flux-form, account for horizontal grid spacing.
563      update rotating_tank results, but not plume_on_slope (affected at
564      truncation level, 11 digits).
565    
566    checkpoint58l_post
567    o calc_gw:
568     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
569     - remove side-drag for now (need to fix it); update plume_on_slope results.
570     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
571    o commit code to make SST/SSS weights spatially variable
572      (based on either variable in-situ or variable initial T/S weights)
573    o pkg/ecco:
574      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
575        now based on horizontally varying weights wthetaLev, wsaltLev
576      * cost_averagesflags now returns year indices in addition to day, month
577      * sflux balance is performed on annual basis
578        (sflxumm, sfluxmm2, bal_sfluxmm)
579      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
580        including separate counting and multipliers
581    o pkg/rbcs
582      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
583    
584    checkpoint58k_post
585    o testreport:
586     - always build in dir. "build" (if not there, mkdir build instead of building
587       & running in input)
588     - run in dir run (if it exists), in build otherwise.
589     - call prepare_run (if input/prepare_run exists)
590     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
591    o pkg/exf modifications to interpolation and rotation routines for more
592       reasonable treatment of North Pole singularity: for tracers North Pole
593       value is set to northernmost zonal-mean value, for zonal velocity it is
594       set to zero, and for meridional velocity it is set to northernmost value.
595    o pkg/exf/exf_check_range.F
596     - add tile index to diagnostics and move stop statement to the very
597       end of the routine.
598    o pkg/diagnostics: (diagnostics_main_init.F)
599      define title of isomorphic variables according to the current config.
600    o pkg/thsice with pkg/seaice dynamics:
601    - fix domain of computation (interior only, required for exf) and do exchanges
602    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
603    o towards a standard way of dealing with multi-threading in MONITOR
604      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
605    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
606       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
607    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
608    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
609    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
610       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
611    o tracer advection:
612     - clean-up and simplify calc_common_factors.F
613     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
614       advection subroutine (but still not used within DST advection S/R)
615    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
616    
617    checkpoint58j_post
618    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
619      from file (collects calls previously in FORWARD_STEP)
620    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
621    o adjoint store dir. adjusted accordingly
622    o genmake2
623      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
624    
625    checkpoint58i_post
626    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
627      on wind stress (SEAICEstressFactor defaults to 1.)
628    o Total number of Timers is finite (<=40): comment out 2 non-essential one
629      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
630    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
631      on CS-grid: no longer loosing mass.
632    o exf & curvilinear-grid: no longer modify longitude xC & xG.
633    o pkg/ggl90: fix sloppy output and fix a bug
634    o pkg/seaice: added SEAICEuseEVPpickup parameter
635      - Set to false in order to start EVP solver with
636        non-EVP pickup files when using SEAICEuseEVP
637      - fix sign error in diffusion in seaice_calc_rhs
638    
639    checkpoint58h_post
640    * Modifications for bottom topography control
641      o replace hFacC by _hFacC at various places
642      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
643      o add non-self-adjoint cg2d_nsa
644      o update autodiff support routines
645      o re-initialise hfac after ctrl_depth_ini
646      o works for 5x5 box, doesnt work for global_ocean.90x40x15
647    * Adding verification for 5x5 box (4-layer) bottom topography control
648    
649    checkpoint58g_post
650    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
651       used for mean seasonal cycle, mean diurnal cycle); add an example
652       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
653    o pkg/ggl90:
654      - add parameter (minimum surface kinetic energy)
655      - fix bug (avoiding division by zero)
656    o couple pkg/thsice to pkg/seaice:
657      - modify advection in seaice to accomodate new scalar fields to be advected
658      - only muliDimAdection scheme work with seaice/thsice
659      - mapping of thsice-variables to seaice-variables, back and forth
660      - does not break the verification experiments, but does not give the
661        desired results either
662    o pkg/seaice
663      - make (default) second order advection a bit less confusing?
664    
665    checkpoint58f_post
666    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
667      to pkg/seaice):
668      - new routines thsice_map_exf and thsice_get_exf provide the interface
669      - add an additional formal parameter to thsice_solve4temp
670    o pkg/exf:
671      - add new fields wspeed, snowprecip (to be able to couple to thsice)
672      - correct Stefan-Boltzmann constant
673      - new parameter for longwave surface emittance
674      - separate some stuff from exf_bulkformulae into new routines  
675        exf_radiation, exf_wind
676      - add new parameters and constants: longwave emissivity for ocean, ice
677        and snow, evaporation parameters over ice
678      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
679        either wind from stress or stress from wind
680    o pkg/thSIce:
681    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
682    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
683       and THSICE_CALC_THICKN
684    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
685    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
686      to make debugging easier.
687    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
688    o pkg/bulk_force:
689      - clean-up comments and parameters ;
690      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
691    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
692      generate new output for test-experiment: aim.5l_cs.thSI
693    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
694      testreport accordingly
695    
696    checkpoint58e_post
697    o SEAICE_CGRID adjoint done
698    o R_STAR adjoint implemented.
699      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
700      * need to sort out init. of h0facc, etc.
701    o Make pkg/profile fully independent of ecco,cost, etc. stuff
702      to be able to use it in pure forward.
703    
704    checkpoint58d_post
705    o upgrade simple test-experiment to tutorial example:
706     step.1: duplicate the experiment and (step.2) will remove the old copy.
707      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
708      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
709      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
710      tutorial_global_oce_biogeo    <- copy of dic_example
711      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
712      tutorial_plume_on_slope       <- copy of plume_on_slope
713      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
714      tutorial_global_oce_optim     <- empty for now (David ?)
715      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
716     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
717    o correct a sign problem in cost_scat.F
718    o obcs and ptracers: fix boundary conditions for advections schemes
719      with larger stencil
720    o thsice adjoint: start
721    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
722      completeness
723    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
724      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
725    o ptracers adjoint:
726      * avoid extensive recomputatations
727      * fix missing re-init. of gptr (missed by TAF)
728    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
729      me to turn off the excessive output to STDOUT that this package produces
730    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
731      and add those terms in Vector-Invariant formulation.
732    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
733      if the control period (xx_hfluxperiod etc) is 0
734    o in profiles pkg, clean routines and fix details
735    o in ecco pkg, reading ssh data:
736      fix problem in case the model does not start at iter0=0
737    o fix mnc-pickup/restart for ptracers
738    o new package prifiles:
739      code to compute profile-based cost by Gael Forget
740      (modifs in ecco, ctrl, autodiff)
741    o Benign bug fix in initialization (spotted by M. Mazloff) of
742      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
743    
744    checkpoint58c_post
745    o adjoint: finish NLFS adjoint and provide reference output in
746      verification/global_ocean.90x40x15/results_ad_nlfs
747    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
748      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
749      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
750      with SEAICE_CGRID defined.
751    o move calendarDumps from "data" to "data.cal" and clean-up the code
752      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
753    o add useEXF & useCAL flags (for now, set in hard-coded way)
754    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
755      (were missing in NH mode, and wrong in quasihydrostatic mode).
756      waiting for Chris updated version of calc_gw to add those CALLs.
757    o fix bug in quasihydrostatic S/R ;
758      add a test for this option: global_ocean.90x40x15.qshyd
759    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
760      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
761    o add on/off flag useOffLine for package OFFLINE
762  o seaice:  o seaice:
763    - modify advection so that it works also on the C-grid    - modify advection so that it works also on the C-grid
764    - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes    - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
765      problem in multi-tile runs with C-grid      problem in multi-tile runs with C-grid
766    - remove velocity clipping from seaice_dynsolver with C-grid    - add flags for clipping ice velocities and/or masking solver forcing
767    - fix drag (ocean on ice) formulation and a bug that caused noise in the    - fix drag (ocean on ice) formulation and a bug that caused noise in the
768      C-grid solver      C-grid solver
769      - added a few comments to seaice_diffusion.F
770      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
771        are now exclusive)
772      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
773        required re-ordering the code a little:
774       + make DAIRN global variable (defined in SEAICE)
775       + move computation of the viscosities eta and zeta into a new separate
776         routine (because I need to recompute them in seaice_ocean_stress.F)
777    
778  checkpoint58b_post  checkpoint58b_post
779  o AIM+thSIce: fix sign of Short-Wave through the Ice ;  o AIM+thSIce: fix sign of Short-Wave through the Ice ;

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