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revision 1.638 by heimbach, Thu Mar 23 19:59:59 2006 UTC revision 1.863 by jmc, Thu Aug 23 19:37:08 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 define mass2rUnit & rUnit2mass as units conversion factor, used for surface
8      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
9      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
10      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
11      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
12      -> update output.txt
13    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
14     this affects truncation error: -> update output.txt of exp:
15      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
16      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
17    
18    checkpoint59f
19    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
20    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
21      a bounded range (in forward mode)
22    o pkg/ecco, ctrl, autodiff and mom_common:
23     internal parameter controls, completements of implementations
24    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
25    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
26      (not seem any difference in testing results).
27    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
28       at face corners.
29    o pkg/generic_advdiff:
30     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
31      loop range indices for computing vertical advection tendency
32      and do the calculation in the interior only (no overlap) ;
33      for now, only implemented for SOM advection (to save CPU time).
34     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
35    o exch2 adjoint
36      First set of changes:
37      - add exch2 hand-written adjoint templates
38      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
39        This will require cleanup in pkg/autodiff/*.F
40        (changed routines currently kept separate in verif. code/)
41      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
42        that used to hide exch2 or cubed-sphere specific code
43        (commented via 'cph-exch2')
44    o pkg/seaice
45      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
46    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
47       output of global_ocean.cs32x15.thsice .
48    
49    checkpoint59e
50    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
51      for B-grid vector (not yet tested) and C-grid vector (<- only used
52      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
53    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
54      (#ifdef ALLOW_SALT_PLUME)
55    o gather_2d/scatter_2d: removed halo regions
56    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
57      scheme and the corresponding test case (under front_relax dir). For now,
58      only available with Skew-flux form and not yet tested in realistic set-up.
59      adjoint: store directives updated, but gradient checks deteriorated,
60      so maybe GM/Redi adjoint is now broken.
61    o seaice adjoint
62      * add AREA, HEFF, HSNOW as control variable
63        (should not change lab_sea results)
64      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
65    o pkg/seaice:
66      * added computation of saltFlux in seaice_growth;
67        For time being, sea ice salinity is assumed constant
68        contribution of snow flooding to freshening of sea ice is neglected.
69        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
70        defaults to 0.0 in order to maintain backward compatibility.
71        Typical values for SEAICE_salinity are 4 to 10 g/kg.
72      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
73      * added SEAICE_availHeatFrac, which specifies fraction of surface level
74        heat content used to melt or grow ice
75      * commented out cap of HICE: it helps keep ice thinner
76      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
77      * applied OBCS T/S mask to HEFFM sea ice mask
78    
79    checkpoint59d
80    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
81     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
82     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
83    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
84     and change default value of parameter "GM_Small_Number";
85     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
86       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
87       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
88    o pkg/ecco: cost function when applying pkg/smooth to controls
89    o pkg/ctrl: add forcingPrecond run time parameter
90    o pkg/seaice:
91     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
92     - fix bug in metric terms of u-equation in LSR solver (implicit part),
93       changes verification/lab_sea
94     - rearrange implicit part of u-equation in LSR solver to make it easier to
95       read, understand, and debug. This causes changes at the truncation level.
96     - fix (serious) bug in the boundary conditions (sign error in the implicit
97       part) of the LSR solver. Changes all LSR results.
98     - fixed problem with HSNOW initialization to avoid thick snow when AREA
99       is initilized with small values - does not change lab_sea results.
100     - added HsnowFile initialization capability
101    o pkg/smooth: addition to model/src and pkg/ctrl so allow
102     initialization of pkg/smooth and application to control vector
103    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
104    o dependencies: pkg/profiles requires pkg/cal
105    o pkg/profiles:
106     - added option ALLOW_PROFILES_GENERICGRID
107         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
108         that interpolation information (grid points and coefficients) is provided
109         within the netcdf input files.
110         -> sample matlab scripts can be found in MITgcm_contrib/gael
111         that allow you to prepare netcdf input files.
112     - also modified: cleaner include statements, cleaner error print statements,
113       cleaner stops when error, and more tests of the netcdf input files consistency.
114    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
115    o pkg/seaice:
116     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
117       requires a new routine: seaice_diagnostics_fill.F
118     - make sure that seaice does not move if not forced (pressure replacement
119       method, Hibler and Ip, 1995), changes results
120     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
121     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
122       It is turned off by default (=-1.), because it changes the results.
123     - make it possible to read AREA from a file, too.
124    
125    checkpoint59c
126    o add S/R and diagnostics for oceanic mixed-layer depth
127    o move GMRedi call after all vertical mixing schemes (including KPP)
128    o pkg/thsice:
129     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
130      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
131    o pkg/obcs:
132     - bug fix for balance code
133    o pkg/seaice:
134      - allow values of SEAICE_elasticParm > 1
135      - add new parameter SEAICE_evpTauRelax as an alternative
136        to SEAICE_elasticParm
137      - make lsr boundary conditions free slip (by default), changes result
138      - add code for no slip boundary conditions for lsr
139      - set minimum of zeta to zero (and not 4e8) (changes results)
140      - add a cap on AREA after advecting AREA if seaice_growth is not called
141    o change calculation of Visbeck K:
142      - no longer depend on tapering scheme; instead, compute slope (limited
143        by GM_maxSlope). this is equivalent to what was comuted before with
144        clipping or linear tappering.
145      - fix vertical averaging (wrong by 1/2 level)
146      - leave the old version (but will not be maintained) within
147        #ifdef OLD_VISBECK_CALC / #endif
148      - update output of exp. ideal_2D_oce
149    o change error catch in calc_r_star to improve vectorization
150    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
151      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
152    o adjoint:
153      Re-organized adjoint checkpointing according to Matt Mazloff
154      (but with modifs/completions/cleanups)
155      Storing is now bundled into large arrays to optimized I/O
156      (and second step in cleanup of the_main_loop)
157    
158    checkpoint59b
159    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
160      - export/import (between ocean & coupler) fields needed for ocean DIC.
161    o pkg/seaice:
162      - get rid of three more exchanges seaice_calc_viscosities (required
163        different loop boundaries in seaice_lsr and seaice_ocean_stress)
164      - bug fix in seaice_ocean_stress (update of lab_sea required)
165      - reduce loop boundaries to necessary minimum also in seaice_evp
166      - go back to the old way of computing deltaC/Z as the adjoint likes that
167        better
168    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
169      passive tracer to an Age Tracer) + update output.txt
170    o pkg/exf:
171      - implement A-grid / C-grid selection for wind-stress input files.
172      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
173      for now, in exf_bulk_largeyeager04.F only :
174      - change implementation for case where windspeed + 2. components wind-stress
175        are read-in. AND use rhoConstFresh to convert evap.
176    o pkg/seaice:
177      - use correct EXCH_UV for wind-forcing (on A-grid).
178      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
179        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
180    o pkg/exf:
181      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
182      EXF_INTERPOLATION:
183      - merge global_with_exf/code version of exf_interp_read.F
184        to the main code ;
185      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
186        reading the file ; Important: This options needs to be defined to recover
187        previous code.
188        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
189      - no longer loose real*8 precision along the way when using exf_iprec=64.
190    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
191      - change discretisation of evp-solver in order to avoid another exchange
192        (changes lab_sea) and clean up a little
193      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
194        help the adjoint (this also changes the results slightly)
195      - add a few "_d 0" where they had been missing in seaice_evp.F
196      - cleaning up: remove unused seaice_calc_rhs.F
197    o pkg/exf: some cleaning-up:
198      - change various "constants" into runtime parameters
199      - cleaned-up Large&Yeager04 routine which should eventually
200        replace exf_bulkformulae.F (changed names of S/R and CPP)
201        and merged various ALLOW_ATM_WIND options
202     only used with thsice pkg (in thsice_get_exf.F):
203      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
204        which are used when useStabilityFct_overIce=TRUE (= the default)
205      - change default values of ice & snow emissivity and scale downward LW
206        by ice & snow emissivity.
207    o pkg/thsice:
208     fix few little problems, in thsice_calc_thickn.F:
209      - growth vertically (and not laterally) if iceFrac == iceMaskMax
210      - melt only laterally if hIce < hThinIce (as the comments say)
211      and in thsice_extend.F:
212      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
213      - start to form ice as soon as the minimum ice-volume is reachable.
214     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
215      and cpl_aim+ocn
216    o pkg/kpp
217     - move computation of surface related input fields to KPP into a new
218       subroutine kpp_forcing_surf.F
219     - remove wrong (within bi,bj loops) EXCH calls.
220     - little cleaning (add argument myThid in last position, cvs header ...)
221     - for now, fix conservation problem by exchanging KPPviscAz (may not
222       be the best fix)
223    o pkg/seaice
224     - check for inconsistent evp parameter/cpp-flag combination
225     - remove leftover errIO flat for obsolete name list error handling
226    o OpenAD
227     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
228    
229    checkpoint59a
230    o pkg/seaice: some parameter clarifications and a little bit of clean up
231    o pkg/thsice: rename run-time parameters:
232       himin       -> hIceMin
233       himin0      -> hThinIce
234       hihig       -> hThickIce
235       i0          -> i0swFrac
236       transCoef   -> bMeltCoef
237       frac_energy -> fracMelting
238      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
239       with default values (for now) that do not change the results.
240      remove old version of thsice vars advection in pkg/seaice.
241    o in FFIELDS.h:
242      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
243      - make pLoad & sIceLoad always available (but still only used if
244         ATMOSPHERIC_LOADING is #define).
245    o pkg/kpp: replaced _KPP_RL with _RL
246    o bug fixes for vertical diffusivity computations when both KPP and
247        3D diffusivity arrays are used.
248    o pkg/seaice: fix bug in evp solver, while doing that
249      - change (improve?) discretization of stress computations for both
250        cgrid-lsr and evp solver
251      - add a new routine to compute strain rates
252      - the above changes lab_sea results
253      - add no slip conditions for evp solver (off by default), lsr-version
254        may follow
255      - fix exchange for shear at Z-points (does not change lab_sea)
256      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
257        (to force the user to pick a time step since there is not "safe" way
258        of choosing it)
259      - add principal stress diagnostics
260      - rearrange fields for evp a little to avoid having to call a: too many
261        exchanges and b: exchanges for stress trensor components which we do
262        not have.
263      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
264        of evp, complete rewrite for lsr case (latter is does not yet work
265        in all cases)
266    o pkg/kpp: add code to have mixing in shelf ice caverns
267      - add myThid to all kpp routines (long overdue)
268    
269    checkpoint59
270    o pkg/exf:
271      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
272        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
273      - move exf header files from lower_case.h to UPPER_CASE.h ;
274        add missing cvs Header & Name
275      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
276      - add namelist param. selectStressGridPosition, exf_monFreq
277      - retire many _CLIM routines, and remove data.exf_clim
278        + params moved to data.exf
279        + climsst, climsss now handled by exf_set_gen, i.e.
280          climss?period=0 refers to constant field,
281          climss?period=-12 to monthly forcing
282      - split up namelists in data.exf
283    o pkg/seaice:
284      - remove seaice_exch and seaice_exch_uv
285      - remove superfluous exchange of theta
286      - add myThid to seaice_budget_ocean/ice
287      - add new interface for atmospheric wind forcing (C-grid only)
288        + new routine
289        + two new field (taux, tauy for stress over ice)
290        + removed one global field (DAIRN) for C-grid case only
291    o pkg/thsise
292      - 2nd set of modifs for thsice adjoint in conjunction with exf
293    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
294    
295    checkpoint58y_post
296    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
297      vertical diffusivity, similar to that in MOM4; turned on using
298      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
299      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
300    o Added capability for 3D specification of background vertical diffusion
301      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
302      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
303      "data" file that contains the 3D vertical diffusivity coefficients.
304    o ice dynamics (pkg/seaice) with thsice thermodynamics:
305      - add code within pkg thsice to advect & diffuse sea-ice fields
306      similar to (and will replace) what has been added in  seaice_advdiff.F,
307      but: - conserving Mass, Heat & Salt.
308           - better when using non-linear advection scheme (not yet fully tested)
309           - can also be used in atmospheric set-up (for now, only the diffusion).
310    
311    checkpoint58x_post
312    o IO option for global-file compact format:
313      - add options when generating topology (utils/exch2/matlab-topology-generator)
314      - add I/O capability (pkg/mdsio).
315      - adapt utils/matlab/rdmds.m to read this format.
316      for now long-line format not yet supported by pkg/mdsio (& exch2).
317    o shelfice: add a few diagnostics
318    
319    checkpoint58w_post
320    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
321      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
322      (and replace horiVertRatio in NH code).
323      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
324                         and tutorial_plume_on_slope (sensitive to truncation)
325    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
326      directly to drive seaice model (C-grid only)
327    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
328     - reintroduce computation of wind from stress,
329     - compute tau (in exf_bulkformulae.F) from windstress averaged to
330       mass points to avoid tau = 0
331     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
332    o rdmnc.m: make it work with "global" files created with gluemnc
333    o rdmnc.m : some improvements in dealing with singleton dimension
334      (tested on all testreport mnc output files).
335    o genmake2: disable pkg/profiles if netcdf test fails.
336    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
337    o move call to cal_readparms up to make calendar parameters/variable available
338      to all packages
339    
340    checkpoint58v_post
341    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
342      useDynP_inEos_Zc tested.
343    o pkg/exf: changes to properly interpolate/mask/scale initial fields
344    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
345      and portions thereof.  See read_cs.txt for description and examples.
346    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
347      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
348      following the great-circle arc between those 2 points.
349    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
350      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
351    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
352     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
353     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
354     - still needs work (not working with some options ; efficiency to improve)
355       and serious testing.
356     - use this scheme for temperature & salinity in 2 advection test exp.:
357       advect_xy & advect_xz, respectively.
358    
359    checkpoint58u_post
360    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
361    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
362    o testreport: add option "-skipdir" to skip some test.
363    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
364      momentum calculation.
365    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
366    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
367      remove checkpoint.F and the_correction_step.F (no longer used);
368      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
369    o add option (linFSConserveTr) to correct for tracer source/sink due to
370      Linear Free surface
371    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
372    o pkg/thsice: fix reading mnc-pickups
373    
374    checkpoint58t_post
375    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
376    o pkg/mdsio:
377     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
378       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
379       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
380     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
381     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
382       either MDS_READ_FIELD or MDS_WRITE_FIELD )
383     - new S/R (to replace MDSWRITEMETA), which allows to write more
384       informations (variable names, time ...) to meta files.
385     - modify rdmds.m to give back the meta file content.
386    o pkg/diagnostics: change vertical interpolation to be safer, and more
387       flexible (define p-levels to interpolate to in data.diagnostics);
388      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
389       diagnostic pointer.
390    o pkg/seaice: more cleaning up of seaice_growth, added many comments
391    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
392    o fix multi-category seaice:
393     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
394       SEAICE_MULTICATEGORY
395     - fix short wave heat flux
396    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
397       and allow to use EVP solver. Change forward lab_sea: test both EVP
398       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
399    o Initial check-in of lab_sea adjoint
400      (very similar to natl_box_adjoint/code_seaice)
401      * used C-grid and EVP solver
402      * used KPP, GM/Redi
403      * uses inAdExact=.TRUE.
404      * gradient checks fail for both ADM and TLM
405        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
406        f.d. gradients actually seem more problematic than ADM, TLM gradients;
407        issue is related to forward mismatch between g77 an ifort
408    o pkg/seaice: overhaul of thermodynamics
409     - growth.F and groatb.F are replaced by new routine seaice_growth.F
410     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
411     - move a few global fields out of SEAICE.h into seaice_growth.F and
412       make them 2D (FICE/QNETO/ ...)
413     - remove FO (it is the same as QNETO)
414     - introduce a few local fields to avoid modifying external fields such
415       as atemp, etc.
416    
417    checkpoint58s_post
418    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
419      changed exf_set_gen.F so that
420        genperiod=0 means input file is one time-constant field and
421        genperiod=-12 means input file contains 12 monthly means
422    o CG2D: use pre-computed solver main-diagonal (stored in common block);
423      this affects truncation error ; generate new output file for exp. which
424      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
425        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
426        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
427        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
428        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
429        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
430    o start implementation of deep-atmosphere and anelastic formulation
431    o verification: remove 2nd copy of input files and use script "prepare_run"
432      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
433    o mom_common/vecinv/fluxform: fix a few initialisation isssues
434    o profiles: fix for multithreaded case
435    
436    o diagnostics: rename few diags:
437      s/'PRESSURE'/'RCENTER '/g
438      s/'TICE    '/'oceFreez'/g
439      s/'TAUX    '/'oceTAUX '/g
440      s/'TAUY    '/'oceTAUY '/g
441      s/'SWFLUX  '/'oceQsw  '/g
442      s/DIFx/DFxE/g
443      s/DIFy/DFyE/g
444      and add few ocean-forcing diagnostics:
445      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
446    o modifications to pkg/seaice/growth.F and budget.F, which change results of
447      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
448      as actual snow thickness.  It now refers everywhere to effective snow
449      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
450    
451    checkpoint58r_post
452    o modifications to pkg/seaice/growth.F, which change results of
453      lab_sea experiment: fixes pertain to melting snow over open water, to
454      masking EVAP under sea ice, and to using the correct AREA variable for
455      computations of EVAP, PRECIP, HSNOW, and GHEFF
456    o add ability to read bathy, salt, and theta using MNC (off by def)
457    o add flooding algorithm and advection of HSNOW for pkg/seaice;
458      both are turned off by default and do no change any results
459    o seaice advection with pkg/thsice: a step toward the use of non-linear
460      advection scheme, but #ifdef or commented out for now (requires more EXCH).
461    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
462      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
463      in natl_box (affects results @ truncation level: update output.txt)
464    o multi-threading and IO:
465      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
466      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
467        (needed to work with SingleCpuIO): tested in all verif. exp.
468    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
469      affects the results (but none of the verification test uses this scheme).
470    o Adding some pkg/diagnostics capability to pkg/seaice
471      (will certainly be subject to changes)
472    o ctrl: adding new control variables:
473      lwflux, lwdown, evap, snowprecip, apressure, runoff
474    
475    checkpoint58q_post
476    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
477      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
478      high_res_cube configuration by 4% on Columbia.
479    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
480      add (in global_with_exf/code) a version of EXF_INTERP_READ without
481      dynamical allocation (seems to work in multi-threaded).
482    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
483      single CPU io) so that TAF does not have to see EESUPPORT.h
484    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
485    
486    checkpoint58p_post
487    o obcs: stop if obcs is used with useCDscheme = .true.
488    o shelfice:
489     - fix a sign error so that no slip at shelfice interface works
490     - remove stop for combination non-hydrostatic code and shelfice. That does
491       not mean, that the results are correct, but at least they are numerically
492       stable
493    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
494    o added adjoint exch routined for all exch*3d* routines
495      and updated flow directives
496    
497    checkpoint58o_post
498    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
499      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
500    o change controling S/R for writing pickup file (new S/R do_write_pickup)
501      and clean-up reading/writing of pickup files.
502    o fix local version of read/write pickup (NH part) in rotating_tank/code
503    o simplify EXCH interface:
504     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
505     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
506    o added the regrid package
507    o shelfice:
508     - add a simple boundary layer scheme to reduce noise
509     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
510    
511    checkpoint58n_post
512    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
513       local variable (not in common block).
514    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
515      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
516      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
517        to work with SingleCpuIO.
518    o add "_d 0" to real constant of pkg/cfc subroutines ;
519       update exp. cfc_exemple & tutorial_cfc_offline output files.
520    o multi-threading and IO:
521      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
522        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
523      - barrier before and after reading.
524      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
525      - avoid using MDS_WRITELOCAL for LAND pkg output.
526      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
527        common-block variables ; Allows multi-threading with master-thread IO.
528    o change default MAX_NO_THREADS from 32 to 4 ;
529      and stop cleanly when MAX_NO_THREADS is too small.
530    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
531    
532    checkpoint58m_post
533    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
534       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
535    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
536       keep global_ocean.90x40x15 (for AD testing) with former secondary test
537       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
538    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
539        add MITgcm_tutorials (= code + all the tutorials)
540    o ecco, option to compute cost for total ssh (mean+anom)
541    o consistent with addition of ptracer and ssh in pkg/profiles
542    o profiles: adding ptracer and ssh
543    o testreport: change multi-test output-file name
544      (from output.txt.{name} to output.{name}.txt)
545    o profiles: now ok for mutli-tiles case
546    o seaice: add 4 parameters for different advection schemes for area,
547      (effective) seaice thickness, enthalphy, and snow height. Their default
548      is the standard parameter SEAICEadvScheme
549    o calc_gw:
550     - add cosFacU in zonal viscous flux (harmonic.visc.).
551     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
552       of tutorial_plume_on_slope.
553    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
554    o calc_gw: true flux-form, account for horizontal grid spacing.
555      update rotating_tank results, but not plume_on_slope (affected at
556      truncation level, 11 digits).
557    
558    checkpoint58l_post
559    o calc_gw:
560     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
561     - remove side-drag for now (need to fix it); update plume_on_slope results.
562     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
563    o commit code to make SST/SSS weights spatially variable
564      (based on either variable in-situ or variable initial T/S weights)
565    o pkg/ecco:
566      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
567        now based on horizontally varying weights wthetaLev, wsaltLev
568      * cost_averagesflags now returns year indices in addition to day, month
569      * sflux balance is performed on annual basis
570        (sflxumm, sfluxmm2, bal_sfluxmm)
571      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
572        including separate counting and multipliers
573    o pkg/rbcs
574      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
575    
576    checkpoint58k_post
577    o testreport:
578     - always build in dir. "build" (if not there, mkdir build instead of building
579       & running in input)
580     - run in dir run (if it exists), in build otherwise.
581     - call prepare_run (if input/prepare_run exists)
582     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
583    o pkg/exf modifications to interpolation and rotation routines for more
584       reasonable treatment of North Pole singularity: for tracers North Pole
585       value is set to northernmost zonal-mean value, for zonal velocity it is
586       set to zero, and for meridional velocity it is set to northernmost value.
587    o pkg/exf/exf_check_range.F
588     - add tile index to diagnostics and move stop statement to the very
589       end of the routine.
590    o pkg/diagnostics: (diagnostics_main_init.F)
591      define title of isomorphic variables according to the current config.
592    o pkg/thsice with pkg/seaice dynamics:
593    - fix domain of computation (interior only, required for exf) and do exchanges
594    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
595    o towards a standard way of dealing with multi-threading in MONITOR
596      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
597    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
598       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
599    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
600    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
601    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
602       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
603    o tracer advection:
604     - clean-up and simplify calc_common_factors.F
605     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
606       advection subroutine (but still not used within DST advection S/R)
607    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
608    
609    checkpoint58j_post
610    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
611      from file (collects calls previously in FORWARD_STEP)
612    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
613    o adjoint store dir. adjusted accordingly
614    o genmake2
615      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
616    
617    checkpoint58i_post
618    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
619      on wind stress (SEAICEstressFactor defaults to 1.)
620    o Total number of Timers is finite (<=40): comment out 2 non-essential one
621      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
622    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
623      on CS-grid: no longer loosing mass.
624    o exf & curvilinear-grid: no longer modify longitude xC & xG.
625    o pkg/ggl90: fix sloppy output and fix a bug
626    o pkg/seaice: added SEAICEuseEVPpickup parameter
627      - Set to false in order to start EVP solver with
628        non-EVP pickup files when using SEAICEuseEVP
629      - fix sign error in diffusion in seaice_calc_rhs
630    
631    checkpoint58h_post
632    * Modifications for bottom topography control
633      o replace hFacC by _hFacC at various places
634      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
635      o add non-self-adjoint cg2d_nsa
636      o update autodiff support routines
637      o re-initialise hfac after ctrl_depth_ini
638      o works for 5x5 box, doesnt work for global_ocean.90x40x15
639    * Adding verification for 5x5 box (4-layer) bottom topography control
640    
641    checkpoint58g_post
642    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
643       used for mean seasonal cycle, mean diurnal cycle); add an example
644       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
645    o pkg/ggl90:
646      - add parameter (minimum surface kinetic energy)
647      - fix bug (avoiding division by zero)
648    o couple pkg/thsice to pkg/seaice:
649      - modify advection in seaice to accomodate new scalar fields to be advected
650      - only muliDimAdection scheme work with seaice/thsice
651      - mapping of thsice-variables to seaice-variables, back and forth
652      - does not break the verification experiments, but does not give the
653        desired results either
654    o pkg/seaice
655      - make (default) second order advection a bit less confusing?
656    
657    checkpoint58f_post
658    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
659      to pkg/seaice):
660      - new routines thsice_map_exf and thsice_get_exf provide the interface
661      - add an additional formal parameter to thsice_solve4temp
662    o pkg/exf:
663      - add new fields wspeed, snowprecip (to be able to couple to thsice)
664      - correct Stefan-Boltzmann constant
665      - new parameter for longwave surface emittance
666      - separate some stuff from exf_bulkformulae into new routines  
667        exf_radiation, exf_wind
668      - add new parameters and constants: longwave emissivity for ocean, ice
669        and snow, evaporation parameters over ice
670      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
671        either wind from stress or stress from wind
672    o pkg/thSIce:
673    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
674    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
675       and THSICE_CALC_THICKN
676    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
677    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
678      to make debugging easier.
679    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
680    o pkg/bulk_force:
681      - clean-up comments and parameters ;
682      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
683    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
684      generate new output for test-experiment: aim.5l_cs.thSI
685    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
686      testreport accordingly
687    
688    checkpoint58e_post
689    o SEAICE_CGRID adjoint done
690    o R_STAR adjoint implemented.
691      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
692      * need to sort out init. of h0facc, etc.
693    o Make pkg/profile fully independent of ecco,cost, etc. stuff
694      to be able to use it in pure forward.
695    
696    checkpoint58d_post
697    o upgrade simple test-experiment to tutorial example:
698     step.1: duplicate the experiment and (step.2) will remove the old copy.
699      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
700      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
701      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
702      tutorial_global_oce_biogeo    <- copy of dic_example
703      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
704      tutorial_plume_on_slope       <- copy of plume_on_slope
705      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
706      tutorial_global_oce_optim     <- empty for now (David ?)
707      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
708     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
709    o correct a sign problem in cost_scat.F
710    o obcs and ptracers: fix boundary conditions for advections schemes
711      with larger stencil
712    o thsice adjoint: start
713    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
714      completeness
715    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
716      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
717    o ptracers adjoint:
718      * avoid extensive recomputatations
719      * fix missing re-init. of gptr (missed by TAF)
720    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
721      me to turn off the excessive output to STDOUT that this package produces
722    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
723      and add those terms in Vector-Invariant formulation.
724    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
725      if the control period (xx_hfluxperiod etc) is 0
726    o in profiles pkg, clean routines and fix details
727    o in ecco pkg, reading ssh data:
728      fix problem in case the model does not start at iter0=0
729    o fix mnc-pickup/restart for ptracers
730    o new package prifiles:
731      code to compute profile-based cost by Gael Forget
732      (modifs in ecco, ctrl, autodiff)
733    o Benign bug fix in initialization (spotted by M. Mazloff) of
734      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
735    
736  checkpoint58c_post  checkpoint58c_post
737  o adjoint: finish NLFS adjoint and provide reference output in  o adjoint: finish NLFS adjoint and provide reference output in
738    verification/global_ocean.90x40x15/results_ad_nlfs    verification/global_ocean.90x40x15/results_ad_nlfs

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