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revision 1.519 by heimbach, Thu Jul 28 14:35:47 2005 UTC revision 1.850 by dimitri, Wed Jul 18 22:53:34 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 adding precip control xx_precip  o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
8  o moved ptracer ctrl index 17 -> 32    scheme and the corresponding test case (under front_relax dir). For now,
9      only available with Skew-flux form and not yet tested in realistic set-up.
10      adjoint: store directives updated, but gradient checks deteriorated,
11      so maybe GM/Redi adjoint is now broken.
12    o seaice adjoint
13      * add AREA, HEFF, HSNOW as control variable
14        (should not change lab_sea results)
15      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
16    o pkg/seaice:
17      * added computation of saltFlux in seaice_growth;
18        For time being, sea ice salinity is assumed constant
19        contribution of snow flooding to freshening of sea ice is neglected.
20        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
21        defaults to 0.0 in order to maintain backward compatibility.
22        Typical values for SEAICE_salinity are 4 to 10 g/kg.
23      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
24      * added SEAICE_availHeatFrac, which specifies fraction of surface level
25        heat content used to melt or grow ice
26      * commented out cap of HICE: it helps keep ice thinner
27      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
28      * applied OBCS T/S mask to HEFFM sea ice mask
29    
30    checkpoint59d
31    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
32     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
33     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
34    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
35     and change default value of parameter "GM_Small_Number";
36     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
37       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
38       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
39    o pkg/ecco: cost function when applying pkg/smooth to controls
40    o pkg/ctrl: add forcingPrecond run time parameter
41    o pkg/seaice:
42     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
43     - fix bug in metric terms of u-equation in LSR solver (implicit part),
44       changes verification/lab_sea
45     - rearrange implicit part of u-equation in LSR solver to make it easier to
46       read, understand, and debug. This causes changes at the truncation level.
47     - fix (serious) bug in the boundary conditions (sign error in the implicit
48       part) of the LSR solver. Changes all LSR results.
49     - fixed problem with HSNOW initialization to avoid thick snow when AREA
50       is initilized with small values - does not change lab_sea results.
51     - added HsnowFile initialization capability
52    o pkg/smooth: addition to model/src and pkg/ctrl so allow
53     initialization of pkg/smooth and application to control vector
54    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
55    o dependencies: pkg/profiles requires pkg/cal
56    o pkg/profiles:
57     - added option ALLOW_PROFILES_GENERICGRID
58         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
59         that interpolation information (grid points and coefficients) is provided
60         within the netcdf input files.
61         -> sample matlab scripts can be found in MITgcm_contrib/gael
62         that allow you to prepare netcdf input files.
63     - also modified: cleaner include statements, cleaner error print statements,
64       cleaner stops when error, and more tests of the netcdf input files consistency.
65    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
66    o pkg/seaice:
67     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
68       requires a new routine: seaice_diagnostics_fill.F
69     - make sure that seaice does not move if not forced (pressure replacement
70       method, Hibler and Ip, 1995), changes results
71     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
72     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
73       It is turned off by default (=-1.), because it changes the results.
74     - make it possible to read AREA from a file, too.
75    
76    checkpoint59c
77    o add S/R and diagnostics for oceanic mixed-layer depth
78    o move GMRedi call after all vertical mixing schemes (including KPP)
79    o pkg/thsice:
80     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
81      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
82    o pkg/obcs:
83     - bug fix for balance code
84    o pkg/seaice:
85      - allow values of SEAICE_elasticParm > 1
86      - add new parameter SEAICE_evpTauRelax as an alternative
87        to SEAICE_elasticParm
88      - make lsr boundary conditions free slip (by default), changes result
89      - add code for no slip boundary conditions for lsr
90      - set minimum of zeta to zero (and not 4e8) (changes results)
91      - add a cap on AREA after advecting AREA if seaice_growth is not called
92    o change calculation of Visbeck K:
93      - no longer depend on tapering scheme; instead, compute slope (limited
94        by GM_maxSlope). this is equivalent to what was comuted before with
95        clipping or linear tappering.
96      - fix vertical averaging (wrong by 1/2 level)
97      - leave the old version (but will not be maintained) within
98        #ifdef OLD_VISBECK_CALC / #endif
99      - update output of exp. ideal_2D_oce
100    o change error catch in calc_r_star to improve vectorization
101    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
102      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
103    o adjoint:
104      Re-organized adjoint checkpointing according to Matt Mazloff
105      (but with modifs/completions/cleanups)
106      Storing is now bundled into large arrays to optimized I/O
107      (and second step in cleanup of the_main_loop)
108    
109    checkpoint59b
110    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
111      - export/import (between ocean & coupler) fields needed for ocean DIC.
112    o pkg/seaice:
113      - get rid of three more exchanges seaice_calc_viscosities (required
114        different loop boundaries in seaice_lsr and seaice_ocean_stress)
115      - bug fix in seaice_ocean_stress (update of lab_sea required)
116      - reduce loop boundaries to necessary minimum also in seaice_evp
117      - go back to the old way of computing deltaC/Z as the adjoint likes that
118        better
119    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
120      passive tracer to an Age Tracer) + update output.txt
121    o pkg/exf:
122      - implement A-grid / C-grid selection for wind-stress input files.
123      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
124      for now, in exf_bulk_largeyeager04.F only :
125      - change implementation for case where windspeed + 2. components wind-stress
126        are read-in. AND use rhoConstFresh to convert evap.
127    o pkg/seaice:
128      - use correct EXCH_UV for wind-forcing (on A-grid).
129      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
130        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
131    o pkg/exf:
132      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
133      EXF_INTERPOLATION:
134      - merge global_with_exf/code version of exf_interp_read.F
135        to the main code ;
136      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
137        reading the file ; Important: This options needs to be defined to recover
138        previous code.
139        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
140      - no longer loose real*8 precision along the way when using exf_iprec=64.
141    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
142      - change discretisation of evp-solver in order to avoid another exchange
143        (changes lab_sea) and clean up a little
144      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
145        help the adjoint (this also changes the results slightly)
146      - add a few "_d 0" where they had been missing in seaice_evp.F
147      - cleaning up: remove unused seaice_calc_rhs.F
148    o pkg/exf: some cleaning-up:
149      - change various "constants" into runtime parameters
150      - cleaned-up Large&Yeager04 routine which should eventually
151        replace exf_bulkformulae.F (changed names of S/R and CPP)
152        and merged various ALLOW_ATM_WIND options
153     only used with thsice pkg (in thsice_get_exf.F):
154      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
155        which are used when useStabilityFct_overIce=TRUE (= the default)
156      - change default values of ice & snow emissivity and scale downward LW
157        by ice & snow emissivity.
158    o pkg/thsice:
159     fix few little problems, in thsice_calc_thickn.F:
160      - growth vertically (and not laterally) if iceFrac == iceMaskMax
161      - melt only laterally if hIce < hThinIce (as the comments say)
162      and in thsice_extend.F:
163      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
164      - start to form ice as soon as the minimum ice-volume is reachable.
165     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
166      and cpl_aim+ocn
167    o pkg/kpp
168     - move computation of surface related input fields to KPP into a new
169       subroutine kpp_forcing_surf.F
170     - remove wrong (within bi,bj loops) EXCH calls.
171     - little cleaning (add argument myThid in last position, cvs header ...)
172     - for now, fix conservation problem by exchanging KPPviscAz (may not
173       be the best fix)
174    o pkg/seaice
175     - check for inconsistent evp parameter/cpp-flag combination
176     - remove leftover errIO flat for obsolete name list error handling
177    o OpenAD
178     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
179    
180    checkpoint59a
181    o pkg/seaice: some parameter clarifications and a little bit of clean up
182    o pkg/thsice: rename run-time parameters:
183       himin       -> hIceMin
184       himin0      -> hThinIce
185       hihig       -> hThickIce
186       i0          -> i0swFrac
187       transCoef   -> bMeltCoef
188       frac_energy -> fracMelting
189      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
190       with default values (for now) that do not change the results.
191      remove old version of thsice vars advection in pkg/seaice.
192    o in FFIELDS.h:
193      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
194      - make pLoad & sIceLoad always available (but still only used if
195         ATMOSPHERIC_LOADING is #define).
196    o pkg/kpp: replaced _KPP_RL with _RL
197    o bug fixes for vertical diffusivity computations when both KPP and
198        3D diffusivity arrays are used.
199    o pkg/seaice: fix bug in evp solver, while doing that
200      - change (improve?) discretization of stress computations for both
201        cgrid-lsr and evp solver
202      - add a new routine to compute strain rates
203      - the above changes lab_sea results
204      - add no slip conditions for evp solver (off by default), lsr-version
205        may follow
206      - fix exchange for shear at Z-points (does not change lab_sea)
207      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
208        (to force the user to pick a time step since there is not "safe" way
209        of choosing it)
210      - add principal stress diagnostics
211      - rearrange fields for evp a little to avoid having to call a: too many
212        exchanges and b: exchanges for stress trensor components which we do
213        not have.
214      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
215        of evp, complete rewrite for lsr case (latter is does not yet work
216        in all cases)
217    o pkg/kpp: add code to have mixing in shelf ice caverns
218      - add myThid to all kpp routines (long overdue)
219    
220    checkpoint59
221    o pkg/exf:
222      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
223        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
224      - move exf header files from lower_case.h to UPPER_CASE.h ;
225        add missing cvs Header & Name
226      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
227      - add namelist param. selectStressGridPosition, exf_monFreq
228      - retire many _CLIM routines, and remove data.exf_clim
229        + params moved to data.exf
230        + climsst, climsss now handled by exf_set_gen, i.e.
231          climss?period=0 refers to constant field,
232          climss?period=-12 to monthly forcing
233      - split up namelists in data.exf
234    o pkg/seaice:
235      - remove seaice_exch and seaice_exch_uv
236      - remove superfluous exchange of theta
237      - add myThid to seaice_budget_ocean/ice
238      - add new interface for atmospheric wind forcing (C-grid only)
239        + new routine
240        + two new field (taux, tauy for stress over ice)
241        + removed one global field (DAIRN) for C-grid case only
242    o pkg/thsise
243      - 2nd set of modifs for thsice adjoint in conjunction with exf
244    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
245    
246    checkpoint58y_post
247    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
248      vertical diffusivity, similar to that in MOM4; turned on using
249      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
250      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
251    o Added capability for 3D specification of background vertical diffusion
252      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
253      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
254      "data" file that contains the 3D vertical diffusivity coefficients.
255    o ice dynamics (pkg/seaice) with thsice thermodynamics:
256      - add code within pkg thsice to advect & diffuse sea-ice fields
257      similar to (and will replace) what has been added in  seaice_advdiff.F,
258      but: - conserving Mass, Heat & Salt.
259           - better when using non-linear advection scheme (not yet fully tested)
260           - can also be used in atmospheric set-up (for now, only the diffusion).
261    
262    checkpoint58x_post
263    o IO option for global-file compact format:
264      - add options when generating topology (utils/exch2/matlab-topology-generator)
265      - add I/O capability (pkg/mdsio).
266      - adapt utils/matlab/rdmds.m to read this format.
267      for now long-line format not yet supported by pkg/mdsio (& exch2).
268    o shelfice: add a few diagnostics
269    
270    checkpoint58w_post
271    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
272      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
273      (and replace horiVertRatio in NH code).
274      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
275                         and tutorial_plume_on_slope (sensitive to truncation)
276    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
277      directly to drive seaice model (C-grid only)
278    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
279     - reintroduce computation of wind from stress,
280     - compute tau (in exf_bulkformulae.F) from windstress averaged to
281       mass points to avoid tau = 0
282     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
283    o rdmnc.m: make it work with "global" files created with gluemnc
284    o rdmnc.m : some improvements in dealing with singleton dimension
285      (tested on all testreport mnc output files).
286    o genmake2: disable pkg/profiles if netcdf test fails.
287    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
288    o move call to cal_readparms up to make calendar parameters/variable available
289      to all packages
290    
291    checkpoint58v_post
292    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
293      useDynP_inEos_Zc tested.
294    o pkg/exf: changes to properly interpolate/mask/scale initial fields
295    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
296      and portions thereof.  See read_cs.txt for description and examples.
297    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
298      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
299      following the great-circle arc between those 2 points.
300    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
301      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
302    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
303     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
304     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
305     - still needs work (not working with some options ; efficiency to improve)
306       and serious testing.
307     - use this scheme for temperature & salinity in 2 advection test exp.:
308       advect_xy & advect_xz, respectively.
309    
310    checkpoint58u_post
311    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
312    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
313    o testreport: add option "-skipdir" to skip some test.
314    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
315      momentum calculation.
316    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
317    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
318      remove checkpoint.F and the_correction_step.F (no longer used);
319      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
320    o add option (linFSConserveTr) to correct for tracer source/sink due to
321      Linear Free surface
322    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
323    o pkg/thsice: fix reading mnc-pickups
324    
325    checkpoint58t_post
326    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
327    o pkg/mdsio:
328     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
329       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
330       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
331     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
332     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
333       either MDS_READ_FIELD or MDS_WRITE_FIELD )
334     - new S/R (to replace MDSWRITEMETA), which allows to write more
335       informations (variable names, time ...) to meta files.
336     - modify rdmds.m to give back the meta file content.
337    o pkg/diagnostics: change vertical interpolation to be safer, and more
338       flexible (define p-levels to interpolate to in data.diagnostics);
339      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
340       diagnostic pointer.
341    o pkg/seaice: more cleaning up of seaice_growth, added many comments
342    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
343    o fix multi-category seaice:
344     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
345       SEAICE_MULTICATEGORY
346     - fix short wave heat flux
347    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
348       and allow to use EVP solver. Change forward lab_sea: test both EVP
349       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
350    o Initial check-in of lab_sea adjoint
351      (very similar to natl_box_adjoint/code_seaice)
352      * used C-grid and EVP solver
353      * used KPP, GM/Redi
354      * uses inAdExact=.TRUE.
355      * gradient checks fail for both ADM and TLM
356        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
357        f.d. gradients actually seem more problematic than ADM, TLM gradients;
358        issue is related to forward mismatch between g77 an ifort
359    o pkg/seaice: overhaul of thermodynamics
360     - growth.F and groatb.F are replaced by new routine seaice_growth.F
361     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
362     - move a few global fields out of SEAICE.h into seaice_growth.F and
363       make them 2D (FICE/QNETO/ ...)
364     - remove FO (it is the same as QNETO)
365     - introduce a few local fields to avoid modifying external fields such
366       as atemp, etc.
367    
368    checkpoint58s_post
369    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
370      changed exf_set_gen.F so that
371        genperiod=0 means input file is one time-constant field and
372        genperiod=-12 means input file contains 12 monthly means
373    o CG2D: use pre-computed solver main-diagonal (stored in common block);
374      this affects truncation error ; generate new output file for exp. which
375      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
376        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
377        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
378        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
379        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
380        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
381    o start implementation of deep-atmosphere and anelastic formulation
382    o verification: remove 2nd copy of input files and use script "prepare_run"
383      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
384    o mom_common/vecinv/fluxform: fix a few initialisation isssues
385    o profiles: fix for multithreaded case
386    
387    o diagnostics: rename few diags:
388      s/'PRESSURE'/'RCENTER '/g
389      s/'TICE    '/'oceFreez'/g
390      s/'TAUX    '/'oceTAUX '/g
391      s/'TAUY    '/'oceTAUY '/g
392      s/'SWFLUX  '/'oceQsw  '/g
393      s/DIFx/DFxE/g
394      s/DIFy/DFyE/g
395      and add few ocean-forcing diagnostics:
396      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
397    o modifications to pkg/seaice/growth.F and budget.F, which change results of
398      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
399      as actual snow thickness.  It now refers everywhere to effective snow
400      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
401    
402    checkpoint58r_post
403    o modifications to pkg/seaice/growth.F, which change results of
404      lab_sea experiment: fixes pertain to melting snow over open water, to
405      masking EVAP under sea ice, and to using the correct AREA variable for
406      computations of EVAP, PRECIP, HSNOW, and GHEFF
407    o add ability to read bathy, salt, and theta using MNC (off by def)
408    o add flooding algorithm and advection of HSNOW for pkg/seaice;
409      both are turned off by default and do no change any results
410    o seaice advection with pkg/thsice: a step toward the use of non-linear
411      advection scheme, but #ifdef or commented out for now (requires more EXCH).
412    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
413      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
414      in natl_box (affects results @ truncation level: update output.txt)
415    o multi-threading and IO:
416      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
417      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
418        (needed to work with SingleCpuIO): tested in all verif. exp.
419    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
420      affects the results (but none of the verification test uses this scheme).
421    o Adding some pkg/diagnostics capability to pkg/seaice
422      (will certainly be subject to changes)
423    o ctrl: adding new control variables:
424      lwflux, lwdown, evap, snowprecip, apressure, runoff
425    
426    checkpoint58q_post
427    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
428      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
429      high_res_cube configuration by 4% on Columbia.
430    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
431      add (in global_with_exf/code) a version of EXF_INTERP_READ without
432      dynamical allocation (seems to work in multi-threaded).
433    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
434      single CPU io) so that TAF does not have to see EESUPPORT.h
435    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
436    
437    checkpoint58p_post
438    o obcs: stop if obcs is used with useCDscheme = .true.
439    o shelfice:
440     - fix a sign error so that no slip at shelfice interface works
441     - remove stop for combination non-hydrostatic code and shelfice. That does
442       not mean, that the results are correct, but at least they are numerically
443       stable
444    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
445    o added adjoint exch routined for all exch*3d* routines
446      and updated flow directives
447    
448    checkpoint58o_post
449    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
450      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
451    o change controling S/R for writing pickup file (new S/R do_write_pickup)
452      and clean-up reading/writing of pickup files.
453    o fix local version of read/write pickup (NH part) in rotating_tank/code
454    o simplify EXCH interface:
455     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
456     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
457    o added the regrid package
458    o shelfice:
459     - add a simple boundary layer scheme to reduce noise
460     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
461    
462    checkpoint58n_post
463    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
464       local variable (not in common block).
465    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
466      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
467      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
468        to work with SingleCpuIO.
469    o add "_d 0" to real constant of pkg/cfc subroutines ;
470       update exp. cfc_exemple & tutorial_cfc_offline output files.
471    o multi-threading and IO:
472      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
473        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
474      - barrier before and after reading.
475      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
476      - avoid using MDS_WRITELOCAL for LAND pkg output.
477      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
478        common-block variables ; Allows multi-threading with master-thread IO.
479    o change default MAX_NO_THREADS from 32 to 4 ;
480      and stop cleanly when MAX_NO_THREADS is too small.
481    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
482    
483    checkpoint58m_post
484    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
485       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
486    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
487       keep global_ocean.90x40x15 (for AD testing) with former secondary test
488       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
489    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
490        add MITgcm_tutorials (= code + all the tutorials)
491    o ecco, option to compute cost for total ssh (mean+anom)
492    o consistent with addition of ptracer and ssh in pkg/profiles
493    o profiles: adding ptracer and ssh
494    o testreport: change multi-test output-file name
495      (from output.txt.{name} to output.{name}.txt)
496    o profiles: now ok for mutli-tiles case
497    o seaice: add 4 parameters for different advection schemes for area,
498      (effective) seaice thickness, enthalphy, and snow height. Their default
499      is the standard parameter SEAICEadvScheme
500    o calc_gw:
501     - add cosFacU in zonal viscous flux (harmonic.visc.).
502     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
503       of tutorial_plume_on_slope.
504    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
505    o calc_gw: true flux-form, account for horizontal grid spacing.
506      update rotating_tank results, but not plume_on_slope (affected at
507      truncation level, 11 digits).
508    
509    checkpoint58l_post
510    o calc_gw:
511     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
512     - remove side-drag for now (need to fix it); update plume_on_slope results.
513     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
514    o commit code to make SST/SSS weights spatially variable
515      (based on either variable in-situ or variable initial T/S weights)
516    o pkg/ecco:
517      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
518        now based on horizontally varying weights wthetaLev, wsaltLev
519      * cost_averagesflags now returns year indices in addition to day, month
520      * sflux balance is performed on annual basis
521        (sflxumm, sfluxmm2, bal_sfluxmm)
522      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
523        including separate counting and multipliers
524    o pkg/rbcs
525      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
526    
527    checkpoint58k_post
528    o testreport:
529     - always build in dir. "build" (if not there, mkdir build instead of building
530       & running in input)
531     - run in dir run (if it exists), in build otherwise.
532     - call prepare_run (if input/prepare_run exists)
533     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
534    o pkg/exf modifications to interpolation and rotation routines for more
535       reasonable treatment of North Pole singularity: for tracers North Pole
536       value is set to northernmost zonal-mean value, for zonal velocity it is
537       set to zero, and for meridional velocity it is set to northernmost value.
538    o pkg/exf/exf_check_range.F
539     - add tile index to diagnostics and move stop statement to the very
540       end of the routine.
541    o pkg/diagnostics: (diagnostics_main_init.F)
542      define title of isomorphic variables according to the current config.
543    o pkg/thsice with pkg/seaice dynamics:
544    - fix domain of computation (interior only, required for exf) and do exchanges
545    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
546    o towards a standard way of dealing with multi-threading in MONITOR
547      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
548    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
549       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
550    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
551    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
552    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
553       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
554    o tracer advection:
555     - clean-up and simplify calc_common_factors.F
556     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
557       advection subroutine (but still not used within DST advection S/R)
558    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
559    
560    checkpoint58j_post
561    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
562      from file (collects calls previously in FORWARD_STEP)
563    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
564    o adjoint store dir. adjusted accordingly
565    o genmake2
566      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
567    
568    checkpoint58i_post
569    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
570      on wind stress (SEAICEstressFactor defaults to 1.)
571    o Total number of Timers is finite (<=40): comment out 2 non-essential one
572      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
573    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
574      on CS-grid: no longer loosing mass.
575    o exf & curvilinear-grid: no longer modify longitude xC & xG.
576    o pkg/ggl90: fix sloppy output and fix a bug
577    o pkg/seaice: added SEAICEuseEVPpickup parameter
578      - Set to false in order to start EVP solver with
579        non-EVP pickup files when using SEAICEuseEVP
580      - fix sign error in diffusion in seaice_calc_rhs
581    
582    checkpoint58h_post
583    * Modifications for bottom topography control
584      o replace hFacC by _hFacC at various places
585      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
586      o add non-self-adjoint cg2d_nsa
587      o update autodiff support routines
588      o re-initialise hfac after ctrl_depth_ini
589      o works for 5x5 box, doesnt work for global_ocean.90x40x15
590    * Adding verification for 5x5 box (4-layer) bottom topography control
591    
592    checkpoint58g_post
593    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
594       used for mean seasonal cycle, mean diurnal cycle); add an example
595       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
596    o pkg/ggl90:
597      - add parameter (minimum surface kinetic energy)
598      - fix bug (avoiding division by zero)
599    o couple pkg/thsice to pkg/seaice:
600      - modify advection in seaice to accomodate new scalar fields to be advected
601      - only muliDimAdection scheme work with seaice/thsice
602      - mapping of thsice-variables to seaice-variables, back and forth
603      - does not break the verification experiments, but does not give the
604        desired results either
605    o pkg/seaice
606      - make (default) second order advection a bit less confusing?
607    
608    checkpoint58f_post
609    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
610      to pkg/seaice):
611      - new routines thsice_map_exf and thsice_get_exf provide the interface
612      - add an additional formal parameter to thsice_solve4temp
613    o pkg/exf:
614      - add new fields wspeed, snowprecip (to be able to couple to thsice)
615      - correct Stefan-Boltzmann constant
616      - new parameter for longwave surface emittance
617      - separate some stuff from exf_bulkformulae into new routines  
618        exf_radiation, exf_wind
619      - add new parameters and constants: longwave emissivity for ocean, ice
620        and snow, evaporation parameters over ice
621      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
622        either wind from stress or stress from wind
623    o pkg/thSIce:
624    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
625    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
626       and THSICE_CALC_THICKN
627    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
628    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
629      to make debugging easier.
630    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
631    o pkg/bulk_force:
632      - clean-up comments and parameters ;
633      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
634    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
635      generate new output for test-experiment: aim.5l_cs.thSI
636    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
637      testreport accordingly
638    
639    checkpoint58e_post
640    o SEAICE_CGRID adjoint done
641    o R_STAR adjoint implemented.
642      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
643      * need to sort out init. of h0facc, etc.
644    o Make pkg/profile fully independent of ecco,cost, etc. stuff
645      to be able to use it in pure forward.
646    
647    checkpoint58d_post
648    o upgrade simple test-experiment to tutorial example:
649     step.1: duplicate the experiment and (step.2) will remove the old copy.
650      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
651      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
652      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
653      tutorial_global_oce_biogeo    <- copy of dic_example
654      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
655      tutorial_plume_on_slope       <- copy of plume_on_slope
656      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
657      tutorial_global_oce_optim     <- empty for now (David ?)
658      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
659     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
660    o correct a sign problem in cost_scat.F
661    o obcs and ptracers: fix boundary conditions for advections schemes
662      with larger stencil
663    o thsice adjoint: start
664    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
665      completeness
666    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
667      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
668    o ptracers adjoint:
669      * avoid extensive recomputatations
670      * fix missing re-init. of gptr (missed by TAF)
671    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
672      me to turn off the excessive output to STDOUT that this package produces
673    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
674      and add those terms in Vector-Invariant formulation.
675    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
676      if the control period (xx_hfluxperiod etc) is 0
677    o in profiles pkg, clean routines and fix details
678    o in ecco pkg, reading ssh data:
679      fix problem in case the model does not start at iter0=0
680    o fix mnc-pickup/restart for ptracers
681    o new package prifiles:
682      code to compute profile-based cost by Gael Forget
683      (modifs in ecco, ctrl, autodiff)
684    o Benign bug fix in initialization (spotted by M. Mazloff) of
685      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
686    
687    checkpoint58c_post
688    o adjoint: finish NLFS adjoint and provide reference output in
689      verification/global_ocean.90x40x15/results_ad_nlfs
690    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
691      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
692      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
693      with SEAICE_CGRID defined.
694    o move calendarDumps from "data" to "data.cal" and clean-up the code
695      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
696    o add useEXF & useCAL flags (for now, set in hard-coded way)
697    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
698      (were missing in NH mode, and wrong in quasihydrostatic mode).
699      waiting for Chris updated version of calc_gw to add those CALLs.
700    o fix bug in quasihydrostatic S/R ;
701      add a test for this option: global_ocean.90x40x15.qshyd
702    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
703      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
704    o add on/off flag useOffLine for package OFFLINE
705    o seaice:
706      - modify advection so that it works also on the C-grid
707      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
708        problem in multi-tile runs with C-grid
709      - add flags for clipping ice velocities and/or masking solver forcing
710      - fix drag (ocean on ice) formulation and a bug that caused noise in the
711        C-grid solver
712      - added a few comments to seaice_diffusion.F
713      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
714        are now exclusive)
715      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
716        required re-ordering the code a little:
717       + make DAIRN global variable (defined in SEAICE)
718       + move computation of the viscosities eta and zeta into a new separate
719         routine (because I need to recompute them in seaice_ocean_stress.F)
720    
721    checkpoint58b_post
722    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
723      update output.txt of exp. aim.5l_cs.thSI
724    o various mnc cleanups and improvements:
725      + shrink lookup tables by factor of ~4
726      + better error reporting when running out of lookup space
727      + able to handle longer path/file names (up to 500 chars)
728    o adjoint:
729      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
730      - TBD: "hidden" mom_vecinv recomp. in dynamics
731    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
732     (allow to differentiate between forcing components using new integer flags:
733      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
734     and add new flag to put Dissipation tendency out of Adams-Bashforth.
735    o ecco
736      - enable trend removal from SSH anomaly obs.
737    o adjoint
738      - a fix for PmEpR when #undef EXACT_CONSERV
739      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
740      - try to fix "hidden" recomp. in forward_step for NLFS
741        (NLFS seems broken sometimes after I checked it in)
742    o seaice:
743     - add c-grid version of the dynamic solver:
744       + three new routines that are the c-grid substitute lsr, dynsolver
745         and ostres
746       + put a few fields that were local to dynsolver into global common
747         blocks, so that I can move the computation of stresses etc into
748         seaice_lsr (saves coding but may break the adjoint).
749     - replace more hardwired parameters by runtime parameters
750     - add ice masks that mask the rhs of the implicit solvers where there
751       is no ice (commented out in seaice_dynsolver, because i am not sure
752       if this works properly), eventually this should replace the clipping
753       of ice velocities in seaice_dynsolver to +/-40cm/s.
754    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
755      include it only where its needed
756    o move balancing of fluxes before the call of external_forcing_surf
757    o seaice:
758      - correct units of turning angles (now they are really in degrees)
759      - move computation of GWATX/Y out of main routine into dynsolver
760      - initialize GWATX/Y in seaice_init
761    o Apply mask on Fresh-Water flux (needed for SSH forcing).
762      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
763    o seaice: add runtime flags for turning angles (default to zero)
764    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
765      and trend from exf forcing and ctrl control adjustments
766    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
767      (since checkpoint57x_post)
768    o change the default rotation period to 86164.s = the Earth rotation
769    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
770      and based on a reference stratification. Tested within hs94.cs-32x32x5.
771    o seaice advection: add code for choosing between the default (2nd order
772      central differences) and multiDim advection schemes provided by
773      pkg/generic_advdiff
774    o seaice:
775      - removed all references to SEAICE_GRID.h fields from
776        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
777        (cubed-sphere configuration will change a little)
778      - grid computations in seaice_init are obsolete now.
779      - cleaned up code a little so that is easier to read (hopefully).
780      - added new (better?) discretizations of default advection and diffusion
781        (turn on with SEAICEuseFluxForm)
782      - replace 1 in 3d global fields by kSurface in growth.F
783      
784    checkpoint58a_post
785    o seaice:
786      - bug fix in advect.F
787    o shelfice:
788      - separate shelfice load anomaly from pload (breaks with time
789        dependent forcing), => introduce constant field shelficeLoadAnomaly.
790        Its default is 0., but it may be computed more cleverly from (unknown)
791        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
792        done offline. A good approximation of the pressure load anomaly is
793        necessary to avoid large initial adjustment processes underneath
794        deep-reaching shelfice.
795      - small fix in ISOMIP shelfice_thermodynamics
796      - add more sophisticated thermodynamics of Hellmer (1989), this is
797        now the default
798      - give a few constants more intuitive names
799    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
800      if bulk formulae are used in long integration (especially EmPmR). Turn
801      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
802      if balancePrintMean, the imbalance that is substracted is printed to
803      STDOUT.
804    o fix bug (typo) in obcs_apply_eta.F
805    o add a new package shelfice which enables us to model the circulation
806      underneath shelf-ice with draughts of hundreds of meters.
807     - works
808     - to do: + include improved thermodynamics
809              + check whether kSurfC (from model/inc/SURFACE.h) can be used
810                instead of new field kTopC
811              + can we use topoFile, Ro_surf and existing code in ini_depth.F
812                instead of new field R_shelfIce and new code in ini_depth.F
813                and ini_mask_etc.F?
814              + adjust vertical mixing schemes?
815    o seaice pkg:
816     - add a cpp-flag to include a simple formula for a salinity dependent
817       freezing point of sea water at the surface
818     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
819       meridional stresses are now different (and hopefully correct)
820    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
821       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
822       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
823    o pkg/diagnostics: add options and parameters for regional-statistics
824       diagnostics ; define regions by reading a region-mask from a file
825       (might add other options later)
826    o pkg/bulk_force:
827     - add option and parameters to use AIM surface-flux formulae.
828     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
829       others forcing fields (defined in PARM05, parameter file "data") are loaded
830       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
831     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
832     - use the right EXCH call for uwind,vwind (to work on CS-grid).
833     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
834       and parameters (note: calcWindStress replaces .NOT.readwindstress).
835     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
836    
837    checkpoint58
838    o add "--embed-source" option to genmake2 which, when the supporting
839      tools can be compiled (as determined by genmake2) will turn on the
840      embed_files package which then embeds the entire MITgcm source code
841      (*.[fFhc] + Makefile) used for the build within the executable
842      - requested by CNH but off by default
843      - adds a paltry <9MB to the mitgcmuv executable in most cases
844      - only writes the output when useEMBEDSRC in eedata is true
845    o clean up 3-dim. relaxation codes:
846      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
847      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
848      * Thanks to Tom Haine for testing!
849    
850    checkpoint57z_post
851    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
852      affects output (@ truncation level) of exp. plume_on_slope ; updated.
853    o fix the pickup behavior for obcs in combination with ptracers
854    o fix a bug in ptracers_external_fields_load
855    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
856      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
857    o transfered surface NH pressure to eta field (if exactConserv).
858    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
859         and update lab_sea output.txt file.
860    o completing 3-dim. relaxation code: additional term
861         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
862      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
863      * At compile time, in "EXF_OPTIONS.h" set
864          #define  ALLOW_CLIMTEMP_RELAXATION
865          #define  ALLOW_CLIMSALT_RELAXATION
866      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
867          tauThetaClimRelax3Dim = 15552000.0,
868          tauSaltClimRelax3Dim  = 15552000.0,
869      * 3 cases:
870          1) Use a constant-in-time 3-dim. field
871          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
872          3) Real-time relax. to time-evolving prescribed field
873    o Adding Laplacian-type smoothness constraint on
874      initial and boundary (forcing) controls (ic, bc)
875      * enable at compile-time via
876        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
877      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
878      * Absolute scale somewhat unclear so far
879      * no area weighting was included since no other cost term does so far
880    
881    checkpoint57y_post
882    First step for a NLFS adjoint
883    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
884    o new init. routines for calc_r_star, calc_surf_dr
885    o still need to deal with ini_masks_etc
886    o testreport seemed happy
887    checkpoint57y_pre
888    
889    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
890    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
891    o add new offset feature to offline pkg (plus minor cleanup)
892    o cfc fixes for final year of integration
893    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
894      be in GCHEM_OPTIONS).
895    
896    checkpoint57x_post
897    o fix testreport Pb in multiple test experiment.
898    o cleanup our namelist syntax in verification:
899      - make it more F95 standards compliant (some work still needed)
900      - allows the vast majority of our tests to work with gfortran
901    o Non-Hydrostatic:
902     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
903     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
904    o Allow to apply AB on T,S rather than on AB(gT,gS):
905     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
906     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
907       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
908     - need a "clever" read_pickup to restart from the other AB formulation
909    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
910    o remove some unused variables (reduces number of compiler warnings)
911    o adjoint
912      * Disable useVariableViscosity for adjoint for time being
913        (there are a number of extensive recomputations)
914      * Initialize certain variables needed for adjoint
915    
916    checkpoint57w_post
917    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
918                 fix the singleCpuIO RS version of MDSWRITEFIELD
919       and add a WARNING if using globalFiles=T with multi-processors.
920    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
921      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
922    o tracer advection scheme:
923      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
924       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
925       was not very convenient).
926      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
927       (further tests needed for the implicit DST & Flux-Limiter schemes).
928    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
929      and sRef for convenience, handy, when you want to initialize
930      ptracers in a large domain with a constant non-zero value. Also,
931      untangle ptracers_init.F a little.
932    
933    checkpoint57v_post
934    o change dome exp. to use variable viscosity in side-drag terms.
935    o remove all the files from the cfc_offline test since they are now
936      incorporated into tutorial_cfc_offline which has been producing
937      identical results for a few days of testing
938    o add new parameter: sideDragFactor to enable half-slip-side BC
939      and change side-drag S/R to use viscosity from mom_calc_visc
940      (can switch back by setting sideDragFactor=0.); affects results at
941      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
942       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
943    o vorticity & strain are now computed without masking, to account for
944      no-slip-side BC in variable viscosity calculation ; mask is applied
945      anyway later on, before computing advection/coriolis terms.
946    o modify exp4 to test new obcs support for reading from external files
947      and for passive tracers
948    o fix behavior of ptracers_monitor when monitor output is written to a
949      netcdf-file; still not independent of monitor.F (writes in the same
950      file).
951    o change default value of tRef (put a uniform, meaningful value for ocean
952      & atmos) and initialize sRef (was missing, as Martin mentioned).
953    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
954      to be proportional to enstrophy dissipation length.  Thus,
955       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
956      This is now consistent with Smagorinsky and with the manual.
957    
958    checkpoint57u_post
959    o OBCS and PTRACERS: add open boundary support for passive tracers
960      - either use homogenous (pseudo) v.Neumann conditions or prescribe
961        OB-values from file; this is not different from the way theta and salinity
962        are treated
963      - however, Orlanski-radiation conditions are not supported, and the model
964        will stop if you use pTracers and Orlanski at the same time.
965      - beefed up the rountine obcs_external_fields_load: now only those open
966        boundary values are overwritten with values from files for which there
967        are really files, otherwise the OB-fields remain untouched. This makes
968        it possible to use different OBs at different ends of the domain (as
969        with EXF)
970    o reduce number of exch calls in shap_filt (s2).
971    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
972      truncation level) 4/5 MLAdjust test results (11&12 digits match).
973    
974    checkpoint57t_post
975    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
976    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
977      same truncation, independent of the face number: affects affects several
978      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
979    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
980      note that biharmonic viscosity + no-slip was not tested in any experiment.
981    o fix bug in non-linear free-surf side-drag ; generate new output for
982      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
983    o make mnc honor the writeBinaryPrec flag for most kinds of output
984    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
985    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
986      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
987    o add brackets in multi-terms sum to get same truncation, independent of
988      the face number (manage to get exactly same value of gU,gV at the cs-edge)
989      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
990    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
991      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
992      a maximum grid-scale Reynolds number.  Also, changes all length calculations
993      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
994      Suggested values of viscosity parameters found in mom_calc_visc.
995      Many new viscosity diagnostics available.
996    
997    checkpoint57s_post
998    o Add clearing-house for viscosity calculations, mom_calc_visc and
999      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1000      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1001      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1002      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1003      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1004      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1005      ViscAhStrain and viscAhTension are now retired.
1006    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1007    o In response to JMC's bug report, genmake2 now ignores any soft-links
1008      that it finds in the *current* directory when searching for files.
1009      Soft-links found in any other source directories will still work as
1010      they did before.
1011    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1012      a C routine to unlimit the stack size
1013    o mnc-ify pkg/aim snapshot vars
1014    o mnc-ify pkg/land as requested by Daniel
1015    o various changes to mnc including:
1016      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1017      - output can now be grouped so that all files within a group
1018          change the ITER portion of their names in lock-step together
1019      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1020          and works with both EXCH1 and EXCH2 (but needs more testing)
1021      - writing works for all verification test cases w/ g77 on Linux
1022    
1023    checkpoint57r_post
1024    o make MNC variable initialization happen earlier
1025    o add diagnostics for (almost) each term of the momentum Eq.
1026    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1027    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1028    o remove MINIMAL_TAVE_OUTPUT option ;
1029      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1030    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1031      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1032    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1033    o add time-dependent SST, SSS control
1034    o cost terms in ecco/ modularized (new cost_generic.F)
1035    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1036    o new infrastructure for seaice model vs. obs misfits in seaice/
1037      * driver from the_main_loop.F is seaice_cost_driver.F
1038      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1039      * gradient check in Exp. 6a of natl_box_adjoint/
1040    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1041      (see README file)
1042    
1043    checkpoint57q_post
1044    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1045    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1046      - bug was reported by Jean-Michel and Ian Fenty
1047    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1048      update exp. cpl_aim+ocn output.
1049    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1050      Needed for high-res. runs with large global files
1051      to be able to limit tapelev size
1052    o Changed some tests for adjoint:
1053      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1054      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1055      * global_ocean.90x40x15/ back to default 3-level checkpointing
1056    o Modifications to enable scripted COMMON to MODULE conversion
1057      * verification/OpenAD/code/ has necessary scripts and description;
1058      * converts, compiles and runs successfully;
1059    
1060    checkpoint57p_post
1061    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1062    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1063      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1064    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1065    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1066      (was already the case for dissipation with mom_vecinv,
1067       and also the case for grad.PhiHyd when staggered-timeStep)
1068      This will allow to put dissipation out-off the AB time-stepping.
1069     Unfortunately, affects truncation error. Update output of exp. that "fails"
1070      (cg2d matching number) and leave the others for later: front_relax(10),
1071      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1072      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1073    
1074    checkpoint57o_post
1075    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1076      (2) its ready to be documented during the 20050801 DocFest
1077    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1078      for ideal_2D_oce and lab_sea on linux_ia32_g77
1079    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1080      in global1x1_tot/code_seaice_adj to access indices 32, 33
1081      (worth another tag)
1082    
1083    checkpoint57n_post
1084    o adding precip control xx_precip 32
1085    o adding swflux control xx_swflux 33
1086    o Replacing 10 forcing penalty cost routines by 1 generic.
1087    o Implementing partitioning in time-mean and variable adjustment
1088      for atmos. state.
1089    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1090  o in natl_box_adjoint:  o in natl_box_adjoint:
1091    * updated: results_bulk/    * updated exp 1 to 10
1092    * not yet updated: results/, results_seaice/      (but does not have time-mean vs. variable split results yet)
1093    o updated global1x1/*_seaice_adj/
1094      to incorporate latest changes
1095    o enable useSingleCpuIO for mdsio vector routines
1096      (applies in particular to tapelev I/O)
1097    o removed inefficient K-loop in all active_file*control*.F
1098    
1099  checkpoint57m_post  checkpoint57m_post
1100  o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)  o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)

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