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revision 1.519 by heimbach, Thu Jul 28 14:35:47 2005 UTC revision 1.856 by dimitri, Mon Aug 6 19:36:53 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 exch2 adjoint
8  o moved ptracer ctrl index 17 -> 32    First set of changes:
9      - add exch2 hand-written adjoint templates
10      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
11        This will require cleanup in pkg/autodiff/*.F
12        (changed routines currently kept separate in verif. code/)
13      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
14        that used to hide exch2 or cubed-sphere specific code
15        (commented via 'cph-exch2')
16    o pkg/seaice
17      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
18    
19    checkpoint59e
20    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
21      for B-grid vector (not yet tested) and C-grid vector (<- only used
22      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
23    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
24      (#ifdef ALLOW_SALT_PLUME)
25    o gather_2d/scatter_2d: removed halo regions
26    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
27      scheme and the corresponding test case (under front_relax dir). For now,
28      only available with Skew-flux form and not yet tested in realistic set-up.
29      adjoint: store directives updated, but gradient checks deteriorated,
30      so maybe GM/Redi adjoint is now broken.
31    o seaice adjoint
32      * add AREA, HEFF, HSNOW as control variable
33        (should not change lab_sea results)
34      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
35    o pkg/seaice:
36      * added computation of saltFlux in seaice_growth;
37        For time being, sea ice salinity is assumed constant
38        contribution of snow flooding to freshening of sea ice is neglected.
39        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
40        defaults to 0.0 in order to maintain backward compatibility.
41        Typical values for SEAICE_salinity are 4 to 10 g/kg.
42      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
43      * added SEAICE_availHeatFrac, which specifies fraction of surface level
44        heat content used to melt or grow ice
45      * commented out cap of HICE: it helps keep ice thinner
46      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
47      * applied OBCS T/S mask to HEFFM sea ice mask
48    
49    checkpoint59d
50    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
51     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
52     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
53    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
54     and change default value of parameter "GM_Small_Number";
55     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
56       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
57       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
58    o pkg/ecco: cost function when applying pkg/smooth to controls
59    o pkg/ctrl: add forcingPrecond run time parameter
60    o pkg/seaice:
61     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
62     - fix bug in metric terms of u-equation in LSR solver (implicit part),
63       changes verification/lab_sea
64     - rearrange implicit part of u-equation in LSR solver to make it easier to
65       read, understand, and debug. This causes changes at the truncation level.
66     - fix (serious) bug in the boundary conditions (sign error in the implicit
67       part) of the LSR solver. Changes all LSR results.
68     - fixed problem with HSNOW initialization to avoid thick snow when AREA
69       is initilized with small values - does not change lab_sea results.
70     - added HsnowFile initialization capability
71    o pkg/smooth: addition to model/src and pkg/ctrl so allow
72     initialization of pkg/smooth and application to control vector
73    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
74    o dependencies: pkg/profiles requires pkg/cal
75    o pkg/profiles:
76     - added option ALLOW_PROFILES_GENERICGRID
77         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
78         that interpolation information (grid points and coefficients) is provided
79         within the netcdf input files.
80         -> sample matlab scripts can be found in MITgcm_contrib/gael
81         that allow you to prepare netcdf input files.
82     - also modified: cleaner include statements, cleaner error print statements,
83       cleaner stops when error, and more tests of the netcdf input files consistency.
84    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
85    o pkg/seaice:
86     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
87       requires a new routine: seaice_diagnostics_fill.F
88     - make sure that seaice does not move if not forced (pressure replacement
89       method, Hibler and Ip, 1995), changes results
90     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
91     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
92       It is turned off by default (=-1.), because it changes the results.
93     - make it possible to read AREA from a file, too.
94    
95    checkpoint59c
96    o add S/R and diagnostics for oceanic mixed-layer depth
97    o move GMRedi call after all vertical mixing schemes (including KPP)
98    o pkg/thsice:
99     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
100      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
101    o pkg/obcs:
102     - bug fix for balance code
103    o pkg/seaice:
104      - allow values of SEAICE_elasticParm > 1
105      - add new parameter SEAICE_evpTauRelax as an alternative
106        to SEAICE_elasticParm
107      - make lsr boundary conditions free slip (by default), changes result
108      - add code for no slip boundary conditions for lsr
109      - set minimum of zeta to zero (and not 4e8) (changes results)
110      - add a cap on AREA after advecting AREA if seaice_growth is not called
111    o change calculation of Visbeck K:
112      - no longer depend on tapering scheme; instead, compute slope (limited
113        by GM_maxSlope). this is equivalent to what was comuted before with
114        clipping or linear tappering.
115      - fix vertical averaging (wrong by 1/2 level)
116      - leave the old version (but will not be maintained) within
117        #ifdef OLD_VISBECK_CALC / #endif
118      - update output of exp. ideal_2D_oce
119    o change error catch in calc_r_star to improve vectorization
120    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
121      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
122    o adjoint:
123      Re-organized adjoint checkpointing according to Matt Mazloff
124      (but with modifs/completions/cleanups)
125      Storing is now bundled into large arrays to optimized I/O
126      (and second step in cleanup of the_main_loop)
127    
128    checkpoint59b
129    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
130      - export/import (between ocean & coupler) fields needed for ocean DIC.
131    o pkg/seaice:
132      - get rid of three more exchanges seaice_calc_viscosities (required
133        different loop boundaries in seaice_lsr and seaice_ocean_stress)
134      - bug fix in seaice_ocean_stress (update of lab_sea required)
135      - reduce loop boundaries to necessary minimum also in seaice_evp
136      - go back to the old way of computing deltaC/Z as the adjoint likes that
137        better
138    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
139      passive tracer to an Age Tracer) + update output.txt
140    o pkg/exf:
141      - implement A-grid / C-grid selection for wind-stress input files.
142      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
143      for now, in exf_bulk_largeyeager04.F only :
144      - change implementation for case where windspeed + 2. components wind-stress
145        are read-in. AND use rhoConstFresh to convert evap.
146    o pkg/seaice:
147      - use correct EXCH_UV for wind-forcing (on A-grid).
148      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
149        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
150    o pkg/exf:
151      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
152      EXF_INTERPOLATION:
153      - merge global_with_exf/code version of exf_interp_read.F
154        to the main code ;
155      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
156        reading the file ; Important: This options needs to be defined to recover
157        previous code.
158        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
159      - no longer loose real*8 precision along the way when using exf_iprec=64.
160    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
161      - change discretisation of evp-solver in order to avoid another exchange
162        (changes lab_sea) and clean up a little
163      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
164        help the adjoint (this also changes the results slightly)
165      - add a few "_d 0" where they had been missing in seaice_evp.F
166      - cleaning up: remove unused seaice_calc_rhs.F
167    o pkg/exf: some cleaning-up:
168      - change various "constants" into runtime parameters
169      - cleaned-up Large&Yeager04 routine which should eventually
170        replace exf_bulkformulae.F (changed names of S/R and CPP)
171        and merged various ALLOW_ATM_WIND options
172     only used with thsice pkg (in thsice_get_exf.F):
173      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
174        which are used when useStabilityFct_overIce=TRUE (= the default)
175      - change default values of ice & snow emissivity and scale downward LW
176        by ice & snow emissivity.
177    o pkg/thsice:
178     fix few little problems, in thsice_calc_thickn.F:
179      - growth vertically (and not laterally) if iceFrac == iceMaskMax
180      - melt only laterally if hIce < hThinIce (as the comments say)
181      and in thsice_extend.F:
182      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
183      - start to form ice as soon as the minimum ice-volume is reachable.
184     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
185      and cpl_aim+ocn
186    o pkg/kpp
187     - move computation of surface related input fields to KPP into a new
188       subroutine kpp_forcing_surf.F
189     - remove wrong (within bi,bj loops) EXCH calls.
190     - little cleaning (add argument myThid in last position, cvs header ...)
191     - for now, fix conservation problem by exchanging KPPviscAz (may not
192       be the best fix)
193    o pkg/seaice
194     - check for inconsistent evp parameter/cpp-flag combination
195     - remove leftover errIO flat for obsolete name list error handling
196    o OpenAD
197     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
198    
199    checkpoint59a
200    o pkg/seaice: some parameter clarifications and a little bit of clean up
201    o pkg/thsice: rename run-time parameters:
202       himin       -> hIceMin
203       himin0      -> hThinIce
204       hihig       -> hThickIce
205       i0          -> i0swFrac
206       transCoef   -> bMeltCoef
207       frac_energy -> fracMelting
208      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
209       with default values (for now) that do not change the results.
210      remove old version of thsice vars advection in pkg/seaice.
211    o in FFIELDS.h:
212      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
213      - make pLoad & sIceLoad always available (but still only used if
214         ATMOSPHERIC_LOADING is #define).
215    o pkg/kpp: replaced _KPP_RL with _RL
216    o bug fixes for vertical diffusivity computations when both KPP and
217        3D diffusivity arrays are used.
218    o pkg/seaice: fix bug in evp solver, while doing that
219      - change (improve?) discretization of stress computations for both
220        cgrid-lsr and evp solver
221      - add a new routine to compute strain rates
222      - the above changes lab_sea results
223      - add no slip conditions for evp solver (off by default), lsr-version
224        may follow
225      - fix exchange for shear at Z-points (does not change lab_sea)
226      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
227        (to force the user to pick a time step since there is not "safe" way
228        of choosing it)
229      - add principal stress diagnostics
230      - rearrange fields for evp a little to avoid having to call a: too many
231        exchanges and b: exchanges for stress trensor components which we do
232        not have.
233      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
234        of evp, complete rewrite for lsr case (latter is does not yet work
235        in all cases)
236    o pkg/kpp: add code to have mixing in shelf ice caverns
237      - add myThid to all kpp routines (long overdue)
238    
239    checkpoint59
240    o pkg/exf:
241      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
242        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
243      - move exf header files from lower_case.h to UPPER_CASE.h ;
244        add missing cvs Header & Name
245      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
246      - add namelist param. selectStressGridPosition, exf_monFreq
247      - retire many _CLIM routines, and remove data.exf_clim
248        + params moved to data.exf
249        + climsst, climsss now handled by exf_set_gen, i.e.
250          climss?period=0 refers to constant field,
251          climss?period=-12 to monthly forcing
252      - split up namelists in data.exf
253    o pkg/seaice:
254      - remove seaice_exch and seaice_exch_uv
255      - remove superfluous exchange of theta
256      - add myThid to seaice_budget_ocean/ice
257      - add new interface for atmospheric wind forcing (C-grid only)
258        + new routine
259        + two new field (taux, tauy for stress over ice)
260        + removed one global field (DAIRN) for C-grid case only
261    o pkg/thsise
262      - 2nd set of modifs for thsice adjoint in conjunction with exf
263    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
264    
265    checkpoint58y_post
266    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
267      vertical diffusivity, similar to that in MOM4; turned on using
268      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
269      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
270    o Added capability for 3D specification of background vertical diffusion
271      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
272      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
273      "data" file that contains the 3D vertical diffusivity coefficients.
274    o ice dynamics (pkg/seaice) with thsice thermodynamics:
275      - add code within pkg thsice to advect & diffuse sea-ice fields
276      similar to (and will replace) what has been added in  seaice_advdiff.F,
277      but: - conserving Mass, Heat & Salt.
278           - better when using non-linear advection scheme (not yet fully tested)
279           - can also be used in atmospheric set-up (for now, only the diffusion).
280    
281    checkpoint58x_post
282    o IO option for global-file compact format:
283      - add options when generating topology (utils/exch2/matlab-topology-generator)
284      - add I/O capability (pkg/mdsio).
285      - adapt utils/matlab/rdmds.m to read this format.
286      for now long-line format not yet supported by pkg/mdsio (& exch2).
287    o shelfice: add a few diagnostics
288    
289    checkpoint58w_post
290    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
291      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
292      (and replace horiVertRatio in NH code).
293      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
294                         and tutorial_plume_on_slope (sensitive to truncation)
295    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
296      directly to drive seaice model (C-grid only)
297    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
298     - reintroduce computation of wind from stress,
299     - compute tau (in exf_bulkformulae.F) from windstress averaged to
300       mass points to avoid tau = 0
301     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
302    o rdmnc.m: make it work with "global" files created with gluemnc
303    o rdmnc.m : some improvements in dealing with singleton dimension
304      (tested on all testreport mnc output files).
305    o genmake2: disable pkg/profiles if netcdf test fails.
306    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
307    o move call to cal_readparms up to make calendar parameters/variable available
308      to all packages
309    
310    checkpoint58v_post
311    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
312      useDynP_inEos_Zc tested.
313    o pkg/exf: changes to properly interpolate/mask/scale initial fields
314    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
315      and portions thereof.  See read_cs.txt for description and examples.
316    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
317      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
318      following the great-circle arc between those 2 points.
319    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
320      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
321    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
322     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
323     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
324     - still needs work (not working with some options ; efficiency to improve)
325       and serious testing.
326     - use this scheme for temperature & salinity in 2 advection test exp.:
327       advect_xy & advect_xz, respectively.
328    
329    checkpoint58u_post
330    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
331    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
332    o testreport: add option "-skipdir" to skip some test.
333    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
334      momentum calculation.
335    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
336    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
337      remove checkpoint.F and the_correction_step.F (no longer used);
338      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
339    o add option (linFSConserveTr) to correct for tracer source/sink due to
340      Linear Free surface
341    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
342    o pkg/thsice: fix reading mnc-pickups
343    
344    checkpoint58t_post
345    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
346    o pkg/mdsio:
347     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
348       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
349       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
350     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
351     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
352       either MDS_READ_FIELD or MDS_WRITE_FIELD )
353     - new S/R (to replace MDSWRITEMETA), which allows to write more
354       informations (variable names, time ...) to meta files.
355     - modify rdmds.m to give back the meta file content.
356    o pkg/diagnostics: change vertical interpolation to be safer, and more
357       flexible (define p-levels to interpolate to in data.diagnostics);
358      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
359       diagnostic pointer.
360    o pkg/seaice: more cleaning up of seaice_growth, added many comments
361    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
362    o fix multi-category seaice:
363     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
364       SEAICE_MULTICATEGORY
365     - fix short wave heat flux
366    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
367       and allow to use EVP solver. Change forward lab_sea: test both EVP
368       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
369    o Initial check-in of lab_sea adjoint
370      (very similar to natl_box_adjoint/code_seaice)
371      * used C-grid and EVP solver
372      * used KPP, GM/Redi
373      * uses inAdExact=.TRUE.
374      * gradient checks fail for both ADM and TLM
375        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
376        f.d. gradients actually seem more problematic than ADM, TLM gradients;
377        issue is related to forward mismatch between g77 an ifort
378    o pkg/seaice: overhaul of thermodynamics
379     - growth.F and groatb.F are replaced by new routine seaice_growth.F
380     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
381     - move a few global fields out of SEAICE.h into seaice_growth.F and
382       make them 2D (FICE/QNETO/ ...)
383     - remove FO (it is the same as QNETO)
384     - introduce a few local fields to avoid modifying external fields such
385       as atemp, etc.
386    
387    checkpoint58s_post
388    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
389      changed exf_set_gen.F so that
390        genperiod=0 means input file is one time-constant field and
391        genperiod=-12 means input file contains 12 monthly means
392    o CG2D: use pre-computed solver main-diagonal (stored in common block);
393      this affects truncation error ; generate new output file for exp. which
394      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
395        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
396        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
397        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
398        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
399        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
400    o start implementation of deep-atmosphere and anelastic formulation
401    o verification: remove 2nd copy of input files and use script "prepare_run"
402      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
403    o mom_common/vecinv/fluxform: fix a few initialisation isssues
404    o profiles: fix for multithreaded case
405    
406    o diagnostics: rename few diags:
407      s/'PRESSURE'/'RCENTER '/g
408      s/'TICE    '/'oceFreez'/g
409      s/'TAUX    '/'oceTAUX '/g
410      s/'TAUY    '/'oceTAUY '/g
411      s/'SWFLUX  '/'oceQsw  '/g
412      s/DIFx/DFxE/g
413      s/DIFy/DFyE/g
414      and add few ocean-forcing diagnostics:
415      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
416    o modifications to pkg/seaice/growth.F and budget.F, which change results of
417      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
418      as actual snow thickness.  It now refers everywhere to effective snow
419      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
420    
421    checkpoint58r_post
422    o modifications to pkg/seaice/growth.F, which change results of
423      lab_sea experiment: fixes pertain to melting snow over open water, to
424      masking EVAP under sea ice, and to using the correct AREA variable for
425      computations of EVAP, PRECIP, HSNOW, and GHEFF
426    o add ability to read bathy, salt, and theta using MNC (off by def)
427    o add flooding algorithm and advection of HSNOW for pkg/seaice;
428      both are turned off by default and do no change any results
429    o seaice advection with pkg/thsice: a step toward the use of non-linear
430      advection scheme, but #ifdef or commented out for now (requires more EXCH).
431    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
432      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
433      in natl_box (affects results @ truncation level: update output.txt)
434    o multi-threading and IO:
435      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
436      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
437        (needed to work with SingleCpuIO): tested in all verif. exp.
438    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
439      affects the results (but none of the verification test uses this scheme).
440    o Adding some pkg/diagnostics capability to pkg/seaice
441      (will certainly be subject to changes)
442    o ctrl: adding new control variables:
443      lwflux, lwdown, evap, snowprecip, apressure, runoff
444    
445    checkpoint58q_post
446    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
447      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
448      high_res_cube configuration by 4% on Columbia.
449    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
450      add (in global_with_exf/code) a version of EXF_INTERP_READ without
451      dynamical allocation (seems to work in multi-threaded).
452    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
453      single CPU io) so that TAF does not have to see EESUPPORT.h
454    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
455    
456    checkpoint58p_post
457    o obcs: stop if obcs is used with useCDscheme = .true.
458    o shelfice:
459     - fix a sign error so that no slip at shelfice interface works
460     - remove stop for combination non-hydrostatic code and shelfice. That does
461       not mean, that the results are correct, but at least they are numerically
462       stable
463    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
464    o added adjoint exch routined for all exch*3d* routines
465      and updated flow directives
466    
467    checkpoint58o_post
468    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
469      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
470    o change controling S/R for writing pickup file (new S/R do_write_pickup)
471      and clean-up reading/writing of pickup files.
472    o fix local version of read/write pickup (NH part) in rotating_tank/code
473    o simplify EXCH interface:
474     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
475     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
476    o added the regrid package
477    o shelfice:
478     - add a simple boundary layer scheme to reduce noise
479     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
480    
481    checkpoint58n_post
482    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
483       local variable (not in common block).
484    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
485      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
486      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
487        to work with SingleCpuIO.
488    o add "_d 0" to real constant of pkg/cfc subroutines ;
489       update exp. cfc_exemple & tutorial_cfc_offline output files.
490    o multi-threading and IO:
491      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
492        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
493      - barrier before and after reading.
494      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
495      - avoid using MDS_WRITELOCAL for LAND pkg output.
496      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
497        common-block variables ; Allows multi-threading with master-thread IO.
498    o change default MAX_NO_THREADS from 32 to 4 ;
499      and stop cleanly when MAX_NO_THREADS is too small.
500    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
501    
502    checkpoint58m_post
503    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
504       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
505    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
506       keep global_ocean.90x40x15 (for AD testing) with former secondary test
507       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
508    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
509        add MITgcm_tutorials (= code + all the tutorials)
510    o ecco, option to compute cost for total ssh (mean+anom)
511    o consistent with addition of ptracer and ssh in pkg/profiles
512    o profiles: adding ptracer and ssh
513    o testreport: change multi-test output-file name
514      (from output.txt.{name} to output.{name}.txt)
515    o profiles: now ok for mutli-tiles case
516    o seaice: add 4 parameters for different advection schemes for area,
517      (effective) seaice thickness, enthalphy, and snow height. Their default
518      is the standard parameter SEAICEadvScheme
519    o calc_gw:
520     - add cosFacU in zonal viscous flux (harmonic.visc.).
521     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
522       of tutorial_plume_on_slope.
523    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
524    o calc_gw: true flux-form, account for horizontal grid spacing.
525      update rotating_tank results, but not plume_on_slope (affected at
526      truncation level, 11 digits).
527    
528    checkpoint58l_post
529    o calc_gw:
530     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
531     - remove side-drag for now (need to fix it); update plume_on_slope results.
532     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
533    o commit code to make SST/SSS weights spatially variable
534      (based on either variable in-situ or variable initial T/S weights)
535    o pkg/ecco:
536      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
537        now based on horizontally varying weights wthetaLev, wsaltLev
538      * cost_averagesflags now returns year indices in addition to day, month
539      * sflux balance is performed on annual basis
540        (sflxumm, sfluxmm2, bal_sfluxmm)
541      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
542        including separate counting and multipliers
543    o pkg/rbcs
544      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
545    
546    checkpoint58k_post
547    o testreport:
548     - always build in dir. "build" (if not there, mkdir build instead of building
549       & running in input)
550     - run in dir run (if it exists), in build otherwise.
551     - call prepare_run (if input/prepare_run exists)
552     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
553    o pkg/exf modifications to interpolation and rotation routines for more
554       reasonable treatment of North Pole singularity: for tracers North Pole
555       value is set to northernmost zonal-mean value, for zonal velocity it is
556       set to zero, and for meridional velocity it is set to northernmost value.
557    o pkg/exf/exf_check_range.F
558     - add tile index to diagnostics and move stop statement to the very
559       end of the routine.
560    o pkg/diagnostics: (diagnostics_main_init.F)
561      define title of isomorphic variables according to the current config.
562    o pkg/thsice with pkg/seaice dynamics:
563    - fix domain of computation (interior only, required for exf) and do exchanges
564    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
565    o towards a standard way of dealing with multi-threading in MONITOR
566      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
567    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
568       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
569    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
570    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
571    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
572       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
573    o tracer advection:
574     - clean-up and simplify calc_common_factors.F
575     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
576       advection subroutine (but still not used within DST advection S/R)
577    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
578    
579    checkpoint58j_post
580    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
581      from file (collects calls previously in FORWARD_STEP)
582    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
583    o adjoint store dir. adjusted accordingly
584    o genmake2
585      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
586    
587    checkpoint58i_post
588    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
589      on wind stress (SEAICEstressFactor defaults to 1.)
590    o Total number of Timers is finite (<=40): comment out 2 non-essential one
591      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
592    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
593      on CS-grid: no longer loosing mass.
594    o exf & curvilinear-grid: no longer modify longitude xC & xG.
595    o pkg/ggl90: fix sloppy output and fix a bug
596    o pkg/seaice: added SEAICEuseEVPpickup parameter
597      - Set to false in order to start EVP solver with
598        non-EVP pickup files when using SEAICEuseEVP
599      - fix sign error in diffusion in seaice_calc_rhs
600    
601    checkpoint58h_post
602    * Modifications for bottom topography control
603      o replace hFacC by _hFacC at various places
604      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
605      o add non-self-adjoint cg2d_nsa
606      o update autodiff support routines
607      o re-initialise hfac after ctrl_depth_ini
608      o works for 5x5 box, doesnt work for global_ocean.90x40x15
609    * Adding verification for 5x5 box (4-layer) bottom topography control
610    
611    checkpoint58g_post
612    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
613       used for mean seasonal cycle, mean diurnal cycle); add an example
614       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
615    o pkg/ggl90:
616      - add parameter (minimum surface kinetic energy)
617      - fix bug (avoiding division by zero)
618    o couple pkg/thsice to pkg/seaice:
619      - modify advection in seaice to accomodate new scalar fields to be advected
620      - only muliDimAdection scheme work with seaice/thsice
621      - mapping of thsice-variables to seaice-variables, back and forth
622      - does not break the verification experiments, but does not give the
623        desired results either
624    o pkg/seaice
625      - make (default) second order advection a bit less confusing?
626    
627    checkpoint58f_post
628    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
629      to pkg/seaice):
630      - new routines thsice_map_exf and thsice_get_exf provide the interface
631      - add an additional formal parameter to thsice_solve4temp
632    o pkg/exf:
633      - add new fields wspeed, snowprecip (to be able to couple to thsice)
634      - correct Stefan-Boltzmann constant
635      - new parameter for longwave surface emittance
636      - separate some stuff from exf_bulkformulae into new routines  
637        exf_radiation, exf_wind
638      - add new parameters and constants: longwave emissivity for ocean, ice
639        and snow, evaporation parameters over ice
640      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
641        either wind from stress or stress from wind
642    o pkg/thSIce:
643    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
644    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
645       and THSICE_CALC_THICKN
646    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
647    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
648      to make debugging easier.
649    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
650    o pkg/bulk_force:
651      - clean-up comments and parameters ;
652      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
653    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
654      generate new output for test-experiment: aim.5l_cs.thSI
655    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
656      testreport accordingly
657    
658    checkpoint58e_post
659    o SEAICE_CGRID adjoint done
660    o R_STAR adjoint implemented.
661      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
662      * need to sort out init. of h0facc, etc.
663    o Make pkg/profile fully independent of ecco,cost, etc. stuff
664      to be able to use it in pure forward.
665    
666    checkpoint58d_post
667    o upgrade simple test-experiment to tutorial example:
668     step.1: duplicate the experiment and (step.2) will remove the old copy.
669      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
670      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
671      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
672      tutorial_global_oce_biogeo    <- copy of dic_example
673      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
674      tutorial_plume_on_slope       <- copy of plume_on_slope
675      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
676      tutorial_global_oce_optim     <- empty for now (David ?)
677      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
678     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
679    o correct a sign problem in cost_scat.F
680    o obcs and ptracers: fix boundary conditions for advections schemes
681      with larger stencil
682    o thsice adjoint: start
683    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
684      completeness
685    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
686      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
687    o ptracers adjoint:
688      * avoid extensive recomputatations
689      * fix missing re-init. of gptr (missed by TAF)
690    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
691      me to turn off the excessive output to STDOUT that this package produces
692    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
693      and add those terms in Vector-Invariant formulation.
694    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
695      if the control period (xx_hfluxperiod etc) is 0
696    o in profiles pkg, clean routines and fix details
697    o in ecco pkg, reading ssh data:
698      fix problem in case the model does not start at iter0=0
699    o fix mnc-pickup/restart for ptracers
700    o new package prifiles:
701      code to compute profile-based cost by Gael Forget
702      (modifs in ecco, ctrl, autodiff)
703    o Benign bug fix in initialization (spotted by M. Mazloff) of
704      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
705    
706    checkpoint58c_post
707    o adjoint: finish NLFS adjoint and provide reference output in
708      verification/global_ocean.90x40x15/results_ad_nlfs
709    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
710      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
711      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
712      with SEAICE_CGRID defined.
713    o move calendarDumps from "data" to "data.cal" and clean-up the code
714      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
715    o add useEXF & useCAL flags (for now, set in hard-coded way)
716    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
717      (were missing in NH mode, and wrong in quasihydrostatic mode).
718      waiting for Chris updated version of calc_gw to add those CALLs.
719    o fix bug in quasihydrostatic S/R ;
720      add a test for this option: global_ocean.90x40x15.qshyd
721    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
722      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
723    o add on/off flag useOffLine for package OFFLINE
724    o seaice:
725      - modify advection so that it works also on the C-grid
726      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
727        problem in multi-tile runs with C-grid
728      - add flags for clipping ice velocities and/or masking solver forcing
729      - fix drag (ocean on ice) formulation and a bug that caused noise in the
730        C-grid solver
731      - added a few comments to seaice_diffusion.F
732      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
733        are now exclusive)
734      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
735        required re-ordering the code a little:
736       + make DAIRN global variable (defined in SEAICE)
737       + move computation of the viscosities eta and zeta into a new separate
738         routine (because I need to recompute them in seaice_ocean_stress.F)
739    
740    checkpoint58b_post
741    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
742      update output.txt of exp. aim.5l_cs.thSI
743    o various mnc cleanups and improvements:
744      + shrink lookup tables by factor of ~4
745      + better error reporting when running out of lookup space
746      + able to handle longer path/file names (up to 500 chars)
747    o adjoint:
748      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
749      - TBD: "hidden" mom_vecinv recomp. in dynamics
750    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
751     (allow to differentiate between forcing components using new integer flags:
752      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
753     and add new flag to put Dissipation tendency out of Adams-Bashforth.
754    o ecco
755      - enable trend removal from SSH anomaly obs.
756    o adjoint
757      - a fix for PmEpR when #undef EXACT_CONSERV
758      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
759      - try to fix "hidden" recomp. in forward_step for NLFS
760        (NLFS seems broken sometimes after I checked it in)
761    o seaice:
762     - add c-grid version of the dynamic solver:
763       + three new routines that are the c-grid substitute lsr, dynsolver
764         and ostres
765       + put a few fields that were local to dynsolver into global common
766         blocks, so that I can move the computation of stresses etc into
767         seaice_lsr (saves coding but may break the adjoint).
768     - replace more hardwired parameters by runtime parameters
769     - add ice masks that mask the rhs of the implicit solvers where there
770       is no ice (commented out in seaice_dynsolver, because i am not sure
771       if this works properly), eventually this should replace the clipping
772       of ice velocities in seaice_dynsolver to +/-40cm/s.
773    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
774      include it only where its needed
775    o move balancing of fluxes before the call of external_forcing_surf
776    o seaice:
777      - correct units of turning angles (now they are really in degrees)
778      - move computation of GWATX/Y out of main routine into dynsolver
779      - initialize GWATX/Y in seaice_init
780    o Apply mask on Fresh-Water flux (needed for SSH forcing).
781      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
782    o seaice: add runtime flags for turning angles (default to zero)
783    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
784      and trend from exf forcing and ctrl control adjustments
785    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
786      (since checkpoint57x_post)
787    o change the default rotation period to 86164.s = the Earth rotation
788    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
789      and based on a reference stratification. Tested within hs94.cs-32x32x5.
790    o seaice advection: add code for choosing between the default (2nd order
791      central differences) and multiDim advection schemes provided by
792      pkg/generic_advdiff
793    o seaice:
794      - removed all references to SEAICE_GRID.h fields from
795        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
796        (cubed-sphere configuration will change a little)
797      - grid computations in seaice_init are obsolete now.
798      - cleaned up code a little so that is easier to read (hopefully).
799      - added new (better?) discretizations of default advection and diffusion
800        (turn on with SEAICEuseFluxForm)
801      - replace 1 in 3d global fields by kSurface in growth.F
802      
803    checkpoint58a_post
804    o seaice:
805      - bug fix in advect.F
806    o shelfice:
807      - separate shelfice load anomaly from pload (breaks with time
808        dependent forcing), => introduce constant field shelficeLoadAnomaly.
809        Its default is 0., but it may be computed more cleverly from (unknown)
810        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
811        done offline. A good approximation of the pressure load anomaly is
812        necessary to avoid large initial adjustment processes underneath
813        deep-reaching shelfice.
814      - small fix in ISOMIP shelfice_thermodynamics
815      - add more sophisticated thermodynamics of Hellmer (1989), this is
816        now the default
817      - give a few constants more intuitive names
818    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
819      if bulk formulae are used in long integration (especially EmPmR). Turn
820      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
821      if balancePrintMean, the imbalance that is substracted is printed to
822      STDOUT.
823    o fix bug (typo) in obcs_apply_eta.F
824    o add a new package shelfice which enables us to model the circulation
825      underneath shelf-ice with draughts of hundreds of meters.
826     - works
827     - to do: + include improved thermodynamics
828              + check whether kSurfC (from model/inc/SURFACE.h) can be used
829                instead of new field kTopC
830              + can we use topoFile, Ro_surf and existing code in ini_depth.F
831                instead of new field R_shelfIce and new code in ini_depth.F
832                and ini_mask_etc.F?
833              + adjust vertical mixing schemes?
834    o seaice pkg:
835     - add a cpp-flag to include a simple formula for a salinity dependent
836       freezing point of sea water at the surface
837     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
838       meridional stresses are now different (and hopefully correct)
839    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
840       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
841       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
842    o pkg/diagnostics: add options and parameters for regional-statistics
843       diagnostics ; define regions by reading a region-mask from a file
844       (might add other options later)
845    o pkg/bulk_force:
846     - add option and parameters to use AIM surface-flux formulae.
847     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
848       others forcing fields (defined in PARM05, parameter file "data") are loaded
849       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
850     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
851     - use the right EXCH call for uwind,vwind (to work on CS-grid).
852     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
853       and parameters (note: calcWindStress replaces .NOT.readwindstress).
854     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
855    
856    checkpoint58
857    o add "--embed-source" option to genmake2 which, when the supporting
858      tools can be compiled (as determined by genmake2) will turn on the
859      embed_files package which then embeds the entire MITgcm source code
860      (*.[fFhc] + Makefile) used for the build within the executable
861      - requested by CNH but off by default
862      - adds a paltry <9MB to the mitgcmuv executable in most cases
863      - only writes the output when useEMBEDSRC in eedata is true
864    o clean up 3-dim. relaxation codes:
865      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
866      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
867      * Thanks to Tom Haine for testing!
868    
869    checkpoint57z_post
870    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
871      affects output (@ truncation level) of exp. plume_on_slope ; updated.
872    o fix the pickup behavior for obcs in combination with ptracers
873    o fix a bug in ptracers_external_fields_load
874    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
875      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
876    o transfered surface NH pressure to eta field (if exactConserv).
877    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
878         and update lab_sea output.txt file.
879    o completing 3-dim. relaxation code: additional term
880         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
881      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
882      * At compile time, in "EXF_OPTIONS.h" set
883          #define  ALLOW_CLIMTEMP_RELAXATION
884          #define  ALLOW_CLIMSALT_RELAXATION
885      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
886          tauThetaClimRelax3Dim = 15552000.0,
887          tauSaltClimRelax3Dim  = 15552000.0,
888      * 3 cases:
889          1) Use a constant-in-time 3-dim. field
890          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
891          3) Real-time relax. to time-evolving prescribed field
892    o Adding Laplacian-type smoothness constraint on
893      initial and boundary (forcing) controls (ic, bc)
894      * enable at compile-time via
895        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
896      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
897      * Absolute scale somewhat unclear so far
898      * no area weighting was included since no other cost term does so far
899    
900    checkpoint57y_post
901    First step for a NLFS adjoint
902    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
903    o new init. routines for calc_r_star, calc_surf_dr
904    o still need to deal with ini_masks_etc
905    o testreport seemed happy
906    checkpoint57y_pre
907    
908    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
909    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
910    o add new offset feature to offline pkg (plus minor cleanup)
911    o cfc fixes for final year of integration
912    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
913      be in GCHEM_OPTIONS).
914    
915    checkpoint57x_post
916    o fix testreport Pb in multiple test experiment.
917    o cleanup our namelist syntax in verification:
918      - make it more F95 standards compliant (some work still needed)
919      - allows the vast majority of our tests to work with gfortran
920    o Non-Hydrostatic:
921     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
922     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
923    o Allow to apply AB on T,S rather than on AB(gT,gS):
924     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
925     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
926       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
927     - need a "clever" read_pickup to restart from the other AB formulation
928    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
929    o remove some unused variables (reduces number of compiler warnings)
930    o adjoint
931      * Disable useVariableViscosity for adjoint for time being
932        (there are a number of extensive recomputations)
933      * Initialize certain variables needed for adjoint
934    
935    checkpoint57w_post
936    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
937                 fix the singleCpuIO RS version of MDSWRITEFIELD
938       and add a WARNING if using globalFiles=T with multi-processors.
939    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
940      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
941    o tracer advection scheme:
942      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
943       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
944       was not very convenient).
945      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
946       (further tests needed for the implicit DST & Flux-Limiter schemes).
947    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
948      and sRef for convenience, handy, when you want to initialize
949      ptracers in a large domain with a constant non-zero value. Also,
950      untangle ptracers_init.F a little.
951    
952    checkpoint57v_post
953    o change dome exp. to use variable viscosity in side-drag terms.
954    o remove all the files from the cfc_offline test since they are now
955      incorporated into tutorial_cfc_offline which has been producing
956      identical results for a few days of testing
957    o add new parameter: sideDragFactor to enable half-slip-side BC
958      and change side-drag S/R to use viscosity from mom_calc_visc
959      (can switch back by setting sideDragFactor=0.); affects results at
960      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
961       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
962    o vorticity & strain are now computed without masking, to account for
963      no-slip-side BC in variable viscosity calculation ; mask is applied
964      anyway later on, before computing advection/coriolis terms.
965    o modify exp4 to test new obcs support for reading from external files
966      and for passive tracers
967    o fix behavior of ptracers_monitor when monitor output is written to a
968      netcdf-file; still not independent of monitor.F (writes in the same
969      file).
970    o change default value of tRef (put a uniform, meaningful value for ocean
971      & atmos) and initialize sRef (was missing, as Martin mentioned).
972    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
973      to be proportional to enstrophy dissipation length.  Thus,
974       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
975      This is now consistent with Smagorinsky and with the manual.
976    
977    checkpoint57u_post
978    o OBCS and PTRACERS: add open boundary support for passive tracers
979      - either use homogenous (pseudo) v.Neumann conditions or prescribe
980        OB-values from file; this is not different from the way theta and salinity
981        are treated
982      - however, Orlanski-radiation conditions are not supported, and the model
983        will stop if you use pTracers and Orlanski at the same time.
984      - beefed up the rountine obcs_external_fields_load: now only those open
985        boundary values are overwritten with values from files for which there
986        are really files, otherwise the OB-fields remain untouched. This makes
987        it possible to use different OBs at different ends of the domain (as
988        with EXF)
989    o reduce number of exch calls in shap_filt (s2).
990    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
991      truncation level) 4/5 MLAdjust test results (11&12 digits match).
992    
993    checkpoint57t_post
994    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
995    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
996      same truncation, independent of the face number: affects affects several
997      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
998    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
999      note that biharmonic viscosity + no-slip was not tested in any experiment.
1000    o fix bug in non-linear free-surf side-drag ; generate new output for
1001      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1002    o make mnc honor the writeBinaryPrec flag for most kinds of output
1003    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1004    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1005      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1006    o add brackets in multi-terms sum to get same truncation, independent of
1007      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1008      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1009    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1010      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1011      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1012      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1013      Suggested values of viscosity parameters found in mom_calc_visc.
1014      Many new viscosity diagnostics available.
1015    
1016    checkpoint57s_post
1017    o Add clearing-house for viscosity calculations, mom_calc_visc and
1018      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1019      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1020      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1021      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1022      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1023      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1024      ViscAhStrain and viscAhTension are now retired.
1025    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1026    o In response to JMC's bug report, genmake2 now ignores any soft-links
1027      that it finds in the *current* directory when searching for files.
1028      Soft-links found in any other source directories will still work as
1029      they did before.
1030    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1031      a C routine to unlimit the stack size
1032    o mnc-ify pkg/aim snapshot vars
1033    o mnc-ify pkg/land as requested by Daniel
1034    o various changes to mnc including:
1035      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1036      - output can now be grouped so that all files within a group
1037          change the ITER portion of their names in lock-step together
1038      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1039          and works with both EXCH1 and EXCH2 (but needs more testing)
1040      - writing works for all verification test cases w/ g77 on Linux
1041    
1042    checkpoint57r_post
1043    o make MNC variable initialization happen earlier
1044    o add diagnostics for (almost) each term of the momentum Eq.
1045    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1046    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1047    o remove MINIMAL_TAVE_OUTPUT option ;
1048      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1049    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1050      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1051    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1052    o add time-dependent SST, SSS control
1053    o cost terms in ecco/ modularized (new cost_generic.F)
1054    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1055    o new infrastructure for seaice model vs. obs misfits in seaice/
1056      * driver from the_main_loop.F is seaice_cost_driver.F
1057      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1058      * gradient check in Exp. 6a of natl_box_adjoint/
1059    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1060      (see README file)
1061    
1062    checkpoint57q_post
1063    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1064    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1065      - bug was reported by Jean-Michel and Ian Fenty
1066    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1067      update exp. cpl_aim+ocn output.
1068    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1069      Needed for high-res. runs with large global files
1070      to be able to limit tapelev size
1071    o Changed some tests for adjoint:
1072      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1073      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1074      * global_ocean.90x40x15/ back to default 3-level checkpointing
1075    o Modifications to enable scripted COMMON to MODULE conversion
1076      * verification/OpenAD/code/ has necessary scripts and description;
1077      * converts, compiles and runs successfully;
1078    
1079    checkpoint57p_post
1080    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1081    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1082      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1083    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1084    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1085      (was already the case for dissipation with mom_vecinv,
1086       and also the case for grad.PhiHyd when staggered-timeStep)
1087      This will allow to put dissipation out-off the AB time-stepping.
1088     Unfortunately, affects truncation error. Update output of exp. that "fails"
1089      (cg2d matching number) and leave the others for later: front_relax(10),
1090      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1091      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1092    
1093    checkpoint57o_post
1094    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1095      (2) its ready to be documented during the 20050801 DocFest
1096    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1097      for ideal_2D_oce and lab_sea on linux_ia32_g77
1098    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1099      in global1x1_tot/code_seaice_adj to access indices 32, 33
1100      (worth another tag)
1101    
1102    checkpoint57n_post
1103    o adding precip control xx_precip 32
1104    o adding swflux control xx_swflux 33
1105    o Replacing 10 forcing penalty cost routines by 1 generic.
1106    o Implementing partitioning in time-mean and variable adjustment
1107      for atmos. state.
1108    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1109  o in natl_box_adjoint:  o in natl_box_adjoint:
1110    * updated: results_bulk/    * updated exp 1 to 10
1111    * not yet updated: results/, results_seaice/      (but does not have time-mean vs. variable split results yet)
1112    o updated global1x1/*_seaice_adj/
1113      to incorporate latest changes
1114    o enable useSingleCpuIO for mdsio vector routines
1115      (applies in particular to tapelev I/O)
1116    o removed inefficient K-loop in all active_file*control*.F
1117    
1118  checkpoint57m_post  checkpoint57m_post
1119  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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