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revision 1.519 by heimbach, Thu Jul 28 14:35:47 2005 UTC revision 1.881 by dimitri, Sat Sep 22 17:55:31 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 pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
8  o moved ptracer ctrl index 17 -> 32  o testreport:
9      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
10        monitor & update offline_exf_seaice exp. output.
11      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
12    o pkg/seaice:
13      - bug fix in the evp solver: boundary conditions were affected be
14        masking of zMax/zMin (changes results)
15      - minor bug fix in boundary conditions in seaice_calc_strainrates
16        (changes results for no_slip)
17      - seaice_lsr.F: make interpolation of eta dependent on boundaries
18      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
19      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
20        stress formulation and no-slip boundary conditions
21    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
22      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
23    o pkg/seaice: a first HSALT time stepping equation has been checked in
24    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
25      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
26      without requiring DO-IF statements
27    o pkg/thsice:
28      use continuous power-law function for partition of energy between lateral
29      melting/freezing and thinning/thickening ; old code using step function
30      still available with #undef THSICE_FRACEN_POWERLAW
31      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
32    o testreport: change AD testing : check against results/output_adm.txt
33      using same scripts as for forward test.
34    
35    checkpoint59g
36    o adjoint testing: in preparation for changing testreport:
37      - output format: cost and grad written on separated lines
38      - ad output results in directory "results" (instead of "results_ad")
39    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
40    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
41    o pkg/ecco: allow user defined cost function contributions
42    o testreport:
43      Allow to choose (per experiment) the list of tested output variables
44       and the main variable (used to issue a pass/FAIL ) ;
45      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
46      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
47      Also modify printing of summary:
48       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
49       b) echo the list of tested variables in the individual summary.txt of
50          each experiment.
51    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
52      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
53      (but still depend on the tile decompostion of the domain).
54    o pkg/seaice: change a discretization detail to make the B-grid code
55      "more symmetric". This change is likely to remove all "ridges/leads" that
56      where quasi-aligned with the grid in B-grid solutions. It may also be
57      the solution to the stress coupling issues with the B-grid.
58    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
59      remove .cvsignore from input dir. (since testreport no longer run here).
60    o pkg/thsice:
61     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
62     - fix reshaping of sea-ice just after advection:
63       melt all the ice only if ice-volume is too small.
64     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
65       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
66     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
67    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
68      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
69    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
70      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
71      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
72      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
73      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
74      -> update output.txt
75    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
76     this affects truncation error: -> update output.txt of exp:
77      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
78      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
79    
80    checkpoint59f
81    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
82    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
83      a bounded range (in forward mode)
84    o pkg/ecco, ctrl, autodiff and mom_common:
85     internal parameter controls, completements of implementations
86    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
87    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
88      (not seem any difference in testing results).
89    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
90       at face corners.
91    o pkg/generic_advdiff:
92     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
93      loop range indices for computing vertical advection tendency
94      and do the calculation in the interior only (no overlap) ;
95      for now, only implemented for SOM advection (to save CPU time).
96     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
97    o exch2 adjoint
98      First set of changes:
99      - add exch2 hand-written adjoint templates
100      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
101        This will require cleanup in pkg/autodiff/*.F
102        (changed routines currently kept separate in verif. code/)
103      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
104        that used to hide exch2 or cubed-sphere specific code
105        (commented via 'cph-exch2')
106    o pkg/seaice
107      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
108    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
109       output of global_ocean.cs32x15.thsice .
110    
111    checkpoint59e
112    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
113      for B-grid vector (not yet tested) and C-grid vector (<- only used
114      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
115    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
116      (#ifdef ALLOW_SALT_PLUME)
117    o gather_2d/scatter_2d: removed halo regions
118    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
119      scheme and the corresponding test case (under front_relax dir). For now,
120      only available with Skew-flux form and not yet tested in realistic set-up.
121      adjoint: store directives updated, but gradient checks deteriorated,
122      so maybe GM/Redi adjoint is now broken.
123    o seaice adjoint
124      * add AREA, HEFF, HSNOW as control variable
125        (should not change lab_sea results)
126      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
127    o pkg/seaice:
128      * added computation of saltFlux in seaice_growth;
129        For time being, sea ice salinity is assumed constant
130        contribution of snow flooding to freshening of sea ice is neglected.
131        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
132        defaults to 0.0 in order to maintain backward compatibility.
133        Typical values for SEAICE_salinity are 4 to 10 g/kg.
134      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
135      * added SEAICE_availHeatFrac, which specifies fraction of surface level
136        heat content used to melt or grow ice
137      * commented out cap of HICE: it helps keep ice thinner
138      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
139      * applied OBCS T/S mask to HEFFM sea ice mask
140    
141    checkpoint59d
142    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
143     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
144     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
145    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
146     and change default value of parameter "GM_Small_Number";
147     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
148       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
149       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
150    o pkg/ecco: cost function when applying pkg/smooth to controls
151    o pkg/ctrl: add forcingPrecond run time parameter
152    o pkg/seaice:
153     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
154     - fix bug in metric terms of u-equation in LSR solver (implicit part),
155       changes verification/lab_sea
156     - rearrange implicit part of u-equation in LSR solver to make it easier to
157       read, understand, and debug. This causes changes at the truncation level.
158     - fix (serious) bug in the boundary conditions (sign error in the implicit
159       part) of the LSR solver. Changes all LSR results.
160     - fixed problem with HSNOW initialization to avoid thick snow when AREA
161       is initilized with small values - does not change lab_sea results.
162     - added HsnowFile initialization capability
163    o pkg/smooth: addition to model/src and pkg/ctrl so allow
164     initialization of pkg/smooth and application to control vector
165    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
166    o dependencies: pkg/profiles requires pkg/cal
167    o pkg/profiles:
168     - added option ALLOW_PROFILES_GENERICGRID
169         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
170         that interpolation information (grid points and coefficients) is provided
171         within the netcdf input files.
172         -> sample matlab scripts can be found in MITgcm_contrib/gael
173         that allow you to prepare netcdf input files.
174     - also modified: cleaner include statements, cleaner error print statements,
175       cleaner stops when error, and more tests of the netcdf input files consistency.
176    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
177    o pkg/seaice:
178     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
179       requires a new routine: seaice_diagnostics_fill.F
180     - make sure that seaice does not move if not forced (pressure replacement
181       method, Hibler and Ip, 1995), changes results
182     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
183     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
184       It is turned off by default (=-1.), because it changes the results.
185     - make it possible to read AREA from a file, too.
186    
187    checkpoint59c
188    o add S/R and diagnostics for oceanic mixed-layer depth
189    o move GMRedi call after all vertical mixing schemes (including KPP)
190    o pkg/thsice:
191     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
192      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
193    o pkg/obcs:
194     - bug fix for balance code
195    o pkg/seaice:
196      - allow values of SEAICE_elasticParm > 1
197      - add new parameter SEAICE_evpTauRelax as an alternative
198        to SEAICE_elasticParm
199      - make lsr boundary conditions free slip (by default), changes result
200      - add code for no slip boundary conditions for lsr
201      - set minimum of zeta to zero (and not 4e8) (changes results)
202      - add a cap on AREA after advecting AREA if seaice_growth is not called
203    o change calculation of Visbeck K:
204      - no longer depend on tapering scheme; instead, compute slope (limited
205        by GM_maxSlope). this is equivalent to what was comuted before with
206        clipping or linear tappering.
207      - fix vertical averaging (wrong by 1/2 level)
208      - leave the old version (but will not be maintained) within
209        #ifdef OLD_VISBECK_CALC / #endif
210      - update output of exp. ideal_2D_oce
211    o change error catch in calc_r_star to improve vectorization
212    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
213      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
214    o adjoint:
215      Re-organized adjoint checkpointing according to Matt Mazloff
216      (but with modifs/completions/cleanups)
217      Storing is now bundled into large arrays to optimized I/O
218      (and second step in cleanup of the_main_loop)
219    
220    checkpoint59b
221    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
222      - export/import (between ocean & coupler) fields needed for ocean DIC.
223    o pkg/seaice:
224      - get rid of three more exchanges seaice_calc_viscosities (required
225        different loop boundaries in seaice_lsr and seaice_ocean_stress)
226      - bug fix in seaice_ocean_stress (update of lab_sea required)
227      - reduce loop boundaries to necessary minimum also in seaice_evp
228      - go back to the old way of computing deltaC/Z as the adjoint likes that
229        better
230    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
231      passive tracer to an Age Tracer) + update output.txt
232    o pkg/exf:
233      - implement A-grid / C-grid selection for wind-stress input files.
234      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
235      for now, in exf_bulk_largeyeager04.F only :
236      - change implementation for case where windspeed + 2. components wind-stress
237        are read-in. AND use rhoConstFresh to convert evap.
238    o pkg/seaice:
239      - use correct EXCH_UV for wind-forcing (on A-grid).
240      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
241        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
242    o pkg/exf:
243      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
244      EXF_INTERPOLATION:
245      - merge global_with_exf/code version of exf_interp_read.F
246        to the main code ;
247      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
248        reading the file ; Important: This options needs to be defined to recover
249        previous code.
250        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
251      - no longer loose real*8 precision along the way when using exf_iprec=64.
252    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
253      - change discretisation of evp-solver in order to avoid another exchange
254        (changes lab_sea) and clean up a little
255      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
256        help the adjoint (this also changes the results slightly)
257      - add a few "_d 0" where they had been missing in seaice_evp.F
258      - cleaning up: remove unused seaice_calc_rhs.F
259    o pkg/exf: some cleaning-up:
260      - change various "constants" into runtime parameters
261      - cleaned-up Large&Yeager04 routine which should eventually
262        replace exf_bulkformulae.F (changed names of S/R and CPP)
263        and merged various ALLOW_ATM_WIND options
264     only used with thsice pkg (in thsice_get_exf.F):
265      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
266        which are used when useStabilityFct_overIce=TRUE (= the default)
267      - change default values of ice & snow emissivity and scale downward LW
268        by ice & snow emissivity.
269    o pkg/thsice:
270     fix few little problems, in thsice_calc_thickn.F:
271      - growth vertically (and not laterally) if iceFrac == iceMaskMax
272      - melt only laterally if hIce < hThinIce (as the comments say)
273      and in thsice_extend.F:
274      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
275      - start to form ice as soon as the minimum ice-volume is reachable.
276     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
277      and cpl_aim+ocn
278    o pkg/kpp
279     - move computation of surface related input fields to KPP into a new
280       subroutine kpp_forcing_surf.F
281     - remove wrong (within bi,bj loops) EXCH calls.
282     - little cleaning (add argument myThid in last position, cvs header ...)
283     - for now, fix conservation problem by exchanging KPPviscAz (may not
284       be the best fix)
285    o pkg/seaice
286     - check for inconsistent evp parameter/cpp-flag combination
287     - remove leftover errIO flat for obsolete name list error handling
288    o OpenAD
289     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
290    
291    checkpoint59a
292    o pkg/seaice: some parameter clarifications and a little bit of clean up
293    o pkg/thsice: rename run-time parameters:
294       himin       -> hIceMin
295       himin0      -> hThinIce
296       hihig       -> hThickIce
297       i0          -> i0swFrac
298       transCoef   -> bMeltCoef
299       frac_energy -> fracMelting
300      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
301       with default values (for now) that do not change the results.
302      remove old version of thsice vars advection in pkg/seaice.
303    o in FFIELDS.h:
304      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
305      - make pLoad & sIceLoad always available (but still only used if
306         ATMOSPHERIC_LOADING is #define).
307    o pkg/kpp: replaced _KPP_RL with _RL
308    o bug fixes for vertical diffusivity computations when both KPP and
309        3D diffusivity arrays are used.
310    o pkg/seaice: fix bug in evp solver, while doing that
311      - change (improve?) discretization of stress computations for both
312        cgrid-lsr and evp solver
313      - add a new routine to compute strain rates
314      - the above changes lab_sea results
315      - add no slip conditions for evp solver (off by default), lsr-version
316        may follow
317      - fix exchange for shear at Z-points (does not change lab_sea)
318      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
319        (to force the user to pick a time step since there is not "safe" way
320        of choosing it)
321      - add principal stress diagnostics
322      - rearrange fields for evp a little to avoid having to call a: too many
323        exchanges and b: exchanges for stress trensor components which we do
324        not have.
325      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
326        of evp, complete rewrite for lsr case (latter is does not yet work
327        in all cases)
328    o pkg/kpp: add code to have mixing in shelf ice caverns
329      - add myThid to all kpp routines (long overdue)
330    
331    checkpoint59
332    o pkg/exf:
333      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
334        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
335      - move exf header files from lower_case.h to UPPER_CASE.h ;
336        add missing cvs Header & Name
337      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
338      - add namelist param. selectStressGridPosition, exf_monFreq
339      - retire many _CLIM routines, and remove data.exf_clim
340        + params moved to data.exf
341        + climsst, climsss now handled by exf_set_gen, i.e.
342          climss?period=0 refers to constant field,
343          climss?period=-12 to monthly forcing
344      - split up namelists in data.exf
345    o pkg/seaice:
346      - remove seaice_exch and seaice_exch_uv
347      - remove superfluous exchange of theta
348      - add myThid to seaice_budget_ocean/ice
349      - add new interface for atmospheric wind forcing (C-grid only)
350        + new routine
351        + two new field (taux, tauy for stress over ice)
352        + removed one global field (DAIRN) for C-grid case only
353    o pkg/thsise
354      - 2nd set of modifs for thsice adjoint in conjunction with exf
355    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
356    
357    checkpoint58y_post
358    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
359      vertical diffusivity, similar to that in MOM4; turned on using
360      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
361      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
362    o Added capability for 3D specification of background vertical diffusion
363      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
364      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
365      "data" file that contains the 3D vertical diffusivity coefficients.
366    o ice dynamics (pkg/seaice) with thsice thermodynamics:
367      - add code within pkg thsice to advect & diffuse sea-ice fields
368      similar to (and will replace) what has been added in  seaice_advdiff.F,
369      but: - conserving Mass, Heat & Salt.
370           - better when using non-linear advection scheme (not yet fully tested)
371           - can also be used in atmospheric set-up (for now, only the diffusion).
372    
373    checkpoint58x_post
374    o IO option for global-file compact format:
375      - add options when generating topology (utils/exch2/matlab-topology-generator)
376      - add I/O capability (pkg/mdsio).
377      - adapt utils/matlab/rdmds.m to read this format.
378      for now long-line format not yet supported by pkg/mdsio (& exch2).
379    o shelfice: add a few diagnostics
380    
381    checkpoint58w_post
382    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
383      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
384      (and replace horiVertRatio in NH code).
385      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
386                         and tutorial_plume_on_slope (sensitive to truncation)
387    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
388      directly to drive seaice model (C-grid only)
389    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
390     - reintroduce computation of wind from stress,
391     - compute tau (in exf_bulkformulae.F) from windstress averaged to
392       mass points to avoid tau = 0
393     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
394    o rdmnc.m: make it work with "global" files created with gluemnc
395    o rdmnc.m : some improvements in dealing with singleton dimension
396      (tested on all testreport mnc output files).
397    o genmake2: disable pkg/profiles if netcdf test fails.
398    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
399    o move call to cal_readparms up to make calendar parameters/variable available
400      to all packages
401    
402    checkpoint58v_post
403    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
404      useDynP_inEos_Zc tested.
405    o pkg/exf: changes to properly interpolate/mask/scale initial fields
406    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
407      and portions thereof.  See read_cs.txt for description and examples.
408    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
409      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
410      following the great-circle arc between those 2 points.
411    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
412      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
413    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
414     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
415     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
416     - still needs work (not working with some options ; efficiency to improve)
417       and serious testing.
418     - use this scheme for temperature & salinity in 2 advection test exp.:
419       advect_xy & advect_xz, respectively.
420    
421    checkpoint58u_post
422    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
423    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
424    o testreport: add option "-skipdir" to skip some test.
425    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
426      momentum calculation.
427    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
428    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
429      remove checkpoint.F and the_correction_step.F (no longer used);
430      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
431    o add option (linFSConserveTr) to correct for tracer source/sink due to
432      Linear Free surface
433    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
434    o pkg/thsice: fix reading mnc-pickups
435    
436    checkpoint58t_post
437    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
438    o pkg/mdsio:
439     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
440       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
441       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
442     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
443     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
444       either MDS_READ_FIELD or MDS_WRITE_FIELD )
445     - new S/R (to replace MDSWRITEMETA), which allows to write more
446       informations (variable names, time ...) to meta files.
447     - modify rdmds.m to give back the meta file content.
448    o pkg/diagnostics: change vertical interpolation to be safer, and more
449       flexible (define p-levels to interpolate to in data.diagnostics);
450      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
451       diagnostic pointer.
452    o pkg/seaice: more cleaning up of seaice_growth, added many comments
453    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
454    o fix multi-category seaice:
455     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
456       SEAICE_MULTICATEGORY
457     - fix short wave heat flux
458    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
459       and allow to use EVP solver. Change forward lab_sea: test both EVP
460       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
461    o Initial check-in of lab_sea adjoint
462      (very similar to natl_box_adjoint/code_seaice)
463      * used C-grid and EVP solver
464      * used KPP, GM/Redi
465      * uses inAdExact=.TRUE.
466      * gradient checks fail for both ADM and TLM
467        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
468        f.d. gradients actually seem more problematic than ADM, TLM gradients;
469        issue is related to forward mismatch between g77 an ifort
470    o pkg/seaice: overhaul of thermodynamics
471     - growth.F and groatb.F are replaced by new routine seaice_growth.F
472     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
473     - move a few global fields out of SEAICE.h into seaice_growth.F and
474       make them 2D (FICE/QNETO/ ...)
475     - remove FO (it is the same as QNETO)
476     - introduce a few local fields to avoid modifying external fields such
477       as atemp, etc.
478    
479    checkpoint58s_post
480    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
481      changed exf_set_gen.F so that
482        genperiod=0 means input file is one time-constant field and
483        genperiod=-12 means input file contains 12 monthly means
484    o CG2D: use pre-computed solver main-diagonal (stored in common block);
485      this affects truncation error ; generate new output file for exp. which
486      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
487        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
488        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
489        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
490        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
491        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
492    o start implementation of deep-atmosphere and anelastic formulation
493    o verification: remove 2nd copy of input files and use script "prepare_run"
494      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
495    o mom_common/vecinv/fluxform: fix a few initialisation isssues
496    o profiles: fix for multithreaded case
497    
498    o diagnostics: rename few diags:
499      s/'PRESSURE'/'RCENTER '/g
500      s/'TICE    '/'oceFreez'/g
501      s/'TAUX    '/'oceTAUX '/g
502      s/'TAUY    '/'oceTAUY '/g
503      s/'SWFLUX  '/'oceQsw  '/g
504      s/DIFx/DFxE/g
505      s/DIFy/DFyE/g
506      and add few ocean-forcing diagnostics:
507      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
508    o modifications to pkg/seaice/growth.F and budget.F, which change results of
509      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
510      as actual snow thickness.  It now refers everywhere to effective snow
511      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
512    
513    checkpoint58r_post
514    o modifications to pkg/seaice/growth.F, which change results of
515      lab_sea experiment: fixes pertain to melting snow over open water, to
516      masking EVAP under sea ice, and to using the correct AREA variable for
517      computations of EVAP, PRECIP, HSNOW, and GHEFF
518    o add ability to read bathy, salt, and theta using MNC (off by def)
519    o add flooding algorithm and advection of HSNOW for pkg/seaice;
520      both are turned off by default and do no change any results
521    o seaice advection with pkg/thsice: a step toward the use of non-linear
522      advection scheme, but #ifdef or commented out for now (requires more EXCH).
523    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
524      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
525      in natl_box (affects results @ truncation level: update output.txt)
526    o multi-threading and IO:
527      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
528      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
529        (needed to work with SingleCpuIO): tested in all verif. exp.
530    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
531      affects the results (but none of the verification test uses this scheme).
532    o Adding some pkg/diagnostics capability to pkg/seaice
533      (will certainly be subject to changes)
534    o ctrl: adding new control variables:
535      lwflux, lwdown, evap, snowprecip, apressure, runoff
536    
537    checkpoint58q_post
538    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
539      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
540      high_res_cube configuration by 4% on Columbia.
541    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
542      add (in global_with_exf/code) a version of EXF_INTERP_READ without
543      dynamical allocation (seems to work in multi-threaded).
544    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
545      single CPU io) so that TAF does not have to see EESUPPORT.h
546    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
547    
548    checkpoint58p_post
549    o obcs: stop if obcs is used with useCDscheme = .true.
550    o shelfice:
551     - fix a sign error so that no slip at shelfice interface works
552     - remove stop for combination non-hydrostatic code and shelfice. That does
553       not mean, that the results are correct, but at least they are numerically
554       stable
555    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
556    o added adjoint exch routined for all exch*3d* routines
557      and updated flow directives
558    
559    checkpoint58o_post
560    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
561      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
562    o change controling S/R for writing pickup file (new S/R do_write_pickup)
563      and clean-up reading/writing of pickup files.
564    o fix local version of read/write pickup (NH part) in rotating_tank/code
565    o simplify EXCH interface:
566     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
567     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
568    o added the regrid package
569    o shelfice:
570     - add a simple boundary layer scheme to reduce noise
571     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
572    
573    checkpoint58n_post
574    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
575       local variable (not in common block).
576    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
577      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
578      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
579        to work with SingleCpuIO.
580    o add "_d 0" to real constant of pkg/cfc subroutines ;
581       update exp. cfc_exemple & tutorial_cfc_offline output files.
582    o multi-threading and IO:
583      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
584        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
585      - barrier before and after reading.
586      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
587      - avoid using MDS_WRITELOCAL for LAND pkg output.
588      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
589        common-block variables ; Allows multi-threading with master-thread IO.
590    o change default MAX_NO_THREADS from 32 to 4 ;
591      and stop cleanly when MAX_NO_THREADS is too small.
592    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
593    
594    checkpoint58m_post
595    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
596       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
597    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
598       keep global_ocean.90x40x15 (for AD testing) with former secondary test
599       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
600    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
601        add MITgcm_tutorials (= code + all the tutorials)
602    o ecco, option to compute cost for total ssh (mean+anom)
603    o consistent with addition of ptracer and ssh in pkg/profiles
604    o profiles: adding ptracer and ssh
605    o testreport: change multi-test output-file name
606      (from output.txt.{name} to output.{name}.txt)
607    o profiles: now ok for mutli-tiles case
608    o seaice: add 4 parameters for different advection schemes for area,
609      (effective) seaice thickness, enthalphy, and snow height. Their default
610      is the standard parameter SEAICEadvScheme
611    o calc_gw:
612     - add cosFacU in zonal viscous flux (harmonic.visc.).
613     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
614       of tutorial_plume_on_slope.
615    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
616    o calc_gw: true flux-form, account for horizontal grid spacing.
617      update rotating_tank results, but not plume_on_slope (affected at
618      truncation level, 11 digits).
619    
620    checkpoint58l_post
621    o calc_gw:
622     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
623     - remove side-drag for now (need to fix it); update plume_on_slope results.
624     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
625    o commit code to make SST/SSS weights spatially variable
626      (based on either variable in-situ or variable initial T/S weights)
627    o pkg/ecco:
628      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
629        now based on horizontally varying weights wthetaLev, wsaltLev
630      * cost_averagesflags now returns year indices in addition to day, month
631      * sflux balance is performed on annual basis
632        (sflxumm, sfluxmm2, bal_sfluxmm)
633      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
634        including separate counting and multipliers
635    o pkg/rbcs
636      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
637    
638    checkpoint58k_post
639    o testreport:
640     - always build in dir. "build" (if not there, mkdir build instead of building
641       & running in input)
642     - run in dir run (if it exists), in build otherwise.
643     - call prepare_run (if input/prepare_run exists)
644     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
645    o pkg/exf modifications to interpolation and rotation routines for more
646       reasonable treatment of North Pole singularity: for tracers North Pole
647       value is set to northernmost zonal-mean value, for zonal velocity it is
648       set to zero, and for meridional velocity it is set to northernmost value.
649    o pkg/exf/exf_check_range.F
650     - add tile index to diagnostics and move stop statement to the very
651       end of the routine.
652    o pkg/diagnostics: (diagnostics_main_init.F)
653      define title of isomorphic variables according to the current config.
654    o pkg/thsice with pkg/seaice dynamics:
655    - fix domain of computation (interior only, required for exf) and do exchanges
656    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
657    o towards a standard way of dealing with multi-threading in MONITOR
658      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
659    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
660       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
661    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
662    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
663    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
664       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
665    o tracer advection:
666     - clean-up and simplify calc_common_factors.F
667     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
668       advection subroutine (but still not used within DST advection S/R)
669    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
670    
671    checkpoint58j_post
672    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
673      from file (collects calls previously in FORWARD_STEP)
674    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
675    o adjoint store dir. adjusted accordingly
676    o genmake2
677      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
678    
679    checkpoint58i_post
680    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
681      on wind stress (SEAICEstressFactor defaults to 1.)
682    o Total number of Timers is finite (<=40): comment out 2 non-essential one
683      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
684    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
685      on CS-grid: no longer loosing mass.
686    o exf & curvilinear-grid: no longer modify longitude xC & xG.
687    o pkg/ggl90: fix sloppy output and fix a bug
688    o pkg/seaice: added SEAICEuseEVPpickup parameter
689      - Set to false in order to start EVP solver with
690        non-EVP pickup files when using SEAICEuseEVP
691      - fix sign error in diffusion in seaice_calc_rhs
692    
693    checkpoint58h_post
694    * Modifications for bottom topography control
695      o replace hFacC by _hFacC at various places
696      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
697      o add non-self-adjoint cg2d_nsa
698      o update autodiff support routines
699      o re-initialise hfac after ctrl_depth_ini
700      o works for 5x5 box, doesnt work for global_ocean.90x40x15
701    * Adding verification for 5x5 box (4-layer) bottom topography control
702    
703    checkpoint58g_post
704    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
705       used for mean seasonal cycle, mean diurnal cycle); add an example
706       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
707    o pkg/ggl90:
708      - add parameter (minimum surface kinetic energy)
709      - fix bug (avoiding division by zero)
710    o couple pkg/thsice to pkg/seaice:
711      - modify advection in seaice to accomodate new scalar fields to be advected
712      - only muliDimAdection scheme work with seaice/thsice
713      - mapping of thsice-variables to seaice-variables, back and forth
714      - does not break the verification experiments, but does not give the
715        desired results either
716    o pkg/seaice
717      - make (default) second order advection a bit less confusing?
718    
719    checkpoint58f_post
720    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
721      to pkg/seaice):
722      - new routines thsice_map_exf and thsice_get_exf provide the interface
723      - add an additional formal parameter to thsice_solve4temp
724    o pkg/exf:
725      - add new fields wspeed, snowprecip (to be able to couple to thsice)
726      - correct Stefan-Boltzmann constant
727      - new parameter for longwave surface emittance
728      - separate some stuff from exf_bulkformulae into new routines  
729        exf_radiation, exf_wind
730      - add new parameters and constants: longwave emissivity for ocean, ice
731        and snow, evaporation parameters over ice
732      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
733        either wind from stress or stress from wind
734    o pkg/thSIce:
735    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
736    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
737       and THSICE_CALC_THICKN
738    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
739    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
740      to make debugging easier.
741    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
742    o pkg/bulk_force:
743      - clean-up comments and parameters ;
744      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
745    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
746      generate new output for test-experiment: aim.5l_cs.thSI
747    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
748      testreport accordingly
749    
750    checkpoint58e_post
751    o SEAICE_CGRID adjoint done
752    o R_STAR adjoint implemented.
753      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
754      * need to sort out init. of h0facc, etc.
755    o Make pkg/profile fully independent of ecco,cost, etc. stuff
756      to be able to use it in pure forward.
757    
758    checkpoint58d_post
759    o upgrade simple test-experiment to tutorial example:
760     step.1: duplicate the experiment and (step.2) will remove the old copy.
761      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
762      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
763      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
764      tutorial_global_oce_biogeo    <- copy of dic_example
765      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
766      tutorial_plume_on_slope       <- copy of plume_on_slope
767      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
768      tutorial_global_oce_optim     <- empty for now (David ?)
769      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
770     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
771    o correct a sign problem in cost_scat.F
772    o obcs and ptracers: fix boundary conditions for advections schemes
773      with larger stencil
774    o thsice adjoint: start
775    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
776      completeness
777    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
778      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
779    o ptracers adjoint:
780      * avoid extensive recomputatations
781      * fix missing re-init. of gptr (missed by TAF)
782    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
783      me to turn off the excessive output to STDOUT that this package produces
784    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
785      and add those terms in Vector-Invariant formulation.
786    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
787      if the control period (xx_hfluxperiod etc) is 0
788    o in profiles pkg, clean routines and fix details
789    o in ecco pkg, reading ssh data:
790      fix problem in case the model does not start at iter0=0
791    o fix mnc-pickup/restart for ptracers
792    o new package prifiles:
793      code to compute profile-based cost by Gael Forget
794      (modifs in ecco, ctrl, autodiff)
795    o Benign bug fix in initialization (spotted by M. Mazloff) of
796      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
797    
798    checkpoint58c_post
799    o adjoint: finish NLFS adjoint and provide reference output in
800      verification/global_ocean.90x40x15/results_ad_nlfs
801    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
802      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
803      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
804      with SEAICE_CGRID defined.
805    o move calendarDumps from "data" to "data.cal" and clean-up the code
806      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
807    o add useEXF & useCAL flags (for now, set in hard-coded way)
808    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
809      (were missing in NH mode, and wrong in quasihydrostatic mode).
810      waiting for Chris updated version of calc_gw to add those CALLs.
811    o fix bug in quasihydrostatic S/R ;
812      add a test for this option: global_ocean.90x40x15.qshyd
813    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
814      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
815    o add on/off flag useOffLine for package OFFLINE
816    o seaice:
817      - modify advection so that it works also on the C-grid
818      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
819        problem in multi-tile runs with C-grid
820      - add flags for clipping ice velocities and/or masking solver forcing
821      - fix drag (ocean on ice) formulation and a bug that caused noise in the
822        C-grid solver
823      - added a few comments to seaice_diffusion.F
824      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
825        are now exclusive)
826      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
827        required re-ordering the code a little:
828       + make DAIRN global variable (defined in SEAICE)
829       + move computation of the viscosities eta and zeta into a new separate
830         routine (because I need to recompute them in seaice_ocean_stress.F)
831    
832    checkpoint58b_post
833    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
834      update output.txt of exp. aim.5l_cs.thSI
835    o various mnc cleanups and improvements:
836      + shrink lookup tables by factor of ~4
837      + better error reporting when running out of lookup space
838      + able to handle longer path/file names (up to 500 chars)
839    o adjoint:
840      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
841      - TBD: "hidden" mom_vecinv recomp. in dynamics
842    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
843     (allow to differentiate between forcing components using new integer flags:
844      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
845     and add new flag to put Dissipation tendency out of Adams-Bashforth.
846    o ecco
847      - enable trend removal from SSH anomaly obs.
848    o adjoint
849      - a fix for PmEpR when #undef EXACT_CONSERV
850      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
851      - try to fix "hidden" recomp. in forward_step for NLFS
852        (NLFS seems broken sometimes after I checked it in)
853    o seaice:
854     - add c-grid version of the dynamic solver:
855       + three new routines that are the c-grid substitute lsr, dynsolver
856         and ostres
857       + put a few fields that were local to dynsolver into global common
858         blocks, so that I can move the computation of stresses etc into
859         seaice_lsr (saves coding but may break the adjoint).
860     - replace more hardwired parameters by runtime parameters
861     - add ice masks that mask the rhs of the implicit solvers where there
862       is no ice (commented out in seaice_dynsolver, because i am not sure
863       if this works properly), eventually this should replace the clipping
864       of ice velocities in seaice_dynsolver to +/-40cm/s.
865    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
866      include it only where its needed
867    o move balancing of fluxes before the call of external_forcing_surf
868    o seaice:
869      - correct units of turning angles (now they are really in degrees)
870      - move computation of GWATX/Y out of main routine into dynsolver
871      - initialize GWATX/Y in seaice_init
872    o Apply mask on Fresh-Water flux (needed for SSH forcing).
873      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
874    o seaice: add runtime flags for turning angles (default to zero)
875    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
876      and trend from exf forcing and ctrl control adjustments
877    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
878      (since checkpoint57x_post)
879    o change the default rotation period to 86164.s = the Earth rotation
880    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
881      and based on a reference stratification. Tested within hs94.cs-32x32x5.
882    o seaice advection: add code for choosing between the default (2nd order
883      central differences) and multiDim advection schemes provided by
884      pkg/generic_advdiff
885    o seaice:
886      - removed all references to SEAICE_GRID.h fields from
887        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
888        (cubed-sphere configuration will change a little)
889      - grid computations in seaice_init are obsolete now.
890      - cleaned up code a little so that is easier to read (hopefully).
891      - added new (better?) discretizations of default advection and diffusion
892        (turn on with SEAICEuseFluxForm)
893      - replace 1 in 3d global fields by kSurface in growth.F
894      
895    checkpoint58a_post
896    o seaice:
897      - bug fix in advect.F
898    o shelfice:
899      - separate shelfice load anomaly from pload (breaks with time
900        dependent forcing), => introduce constant field shelficeLoadAnomaly.
901        Its default is 0., but it may be computed more cleverly from (unknown)
902        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
903        done offline. A good approximation of the pressure load anomaly is
904        necessary to avoid large initial adjustment processes underneath
905        deep-reaching shelfice.
906      - small fix in ISOMIP shelfice_thermodynamics
907      - add more sophisticated thermodynamics of Hellmer (1989), this is
908        now the default
909      - give a few constants more intuitive names
910    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
911      if bulk formulae are used in long integration (especially EmPmR). Turn
912      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
913      if balancePrintMean, the imbalance that is substracted is printed to
914      STDOUT.
915    o fix bug (typo) in obcs_apply_eta.F
916    o add a new package shelfice which enables us to model the circulation
917      underneath shelf-ice with draughts of hundreds of meters.
918     - works
919     - to do: + include improved thermodynamics
920              + check whether kSurfC (from model/inc/SURFACE.h) can be used
921                instead of new field kTopC
922              + can we use topoFile, Ro_surf and existing code in ini_depth.F
923                instead of new field R_shelfIce and new code in ini_depth.F
924                and ini_mask_etc.F?
925              + adjust vertical mixing schemes?
926    o seaice pkg:
927     - add a cpp-flag to include a simple formula for a salinity dependent
928       freezing point of sea water at the surface
929     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
930       meridional stresses are now different (and hopefully correct)
931    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
932       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
933       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
934    o pkg/diagnostics: add options and parameters for regional-statistics
935       diagnostics ; define regions by reading a region-mask from a file
936       (might add other options later)
937    o pkg/bulk_force:
938     - add option and parameters to use AIM surface-flux formulae.
939     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
940       others forcing fields (defined in PARM05, parameter file "data") are loaded
941       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
942     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
943     - use the right EXCH call for uwind,vwind (to work on CS-grid).
944     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
945       and parameters (note: calcWindStress replaces .NOT.readwindstress).
946     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
947    
948    checkpoint58
949    o add "--embed-source" option to genmake2 which, when the supporting
950      tools can be compiled (as determined by genmake2) will turn on the
951      embed_files package which then embeds the entire MITgcm source code
952      (*.[fFhc] + Makefile) used for the build within the executable
953      - requested by CNH but off by default
954      - adds a paltry <9MB to the mitgcmuv executable in most cases
955      - only writes the output when useEMBEDSRC in eedata is true
956    o clean up 3-dim. relaxation codes:
957      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
958      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
959      * Thanks to Tom Haine for testing!
960    
961    checkpoint57z_post
962    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
963      affects output (@ truncation level) of exp. plume_on_slope ; updated.
964    o fix the pickup behavior for obcs in combination with ptracers
965    o fix a bug in ptracers_external_fields_load
966    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
967      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
968    o transfered surface NH pressure to eta field (if exactConserv).
969    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
970         and update lab_sea output.txt file.
971    o completing 3-dim. relaxation code: additional term
972         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
973      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
974      * At compile time, in "EXF_OPTIONS.h" set
975          #define  ALLOW_CLIMTEMP_RELAXATION
976          #define  ALLOW_CLIMSALT_RELAXATION
977      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
978          tauThetaClimRelax3Dim = 15552000.0,
979          tauSaltClimRelax3Dim  = 15552000.0,
980      * 3 cases:
981          1) Use a constant-in-time 3-dim. field
982          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
983          3) Real-time relax. to time-evolving prescribed field
984    o Adding Laplacian-type smoothness constraint on
985      initial and boundary (forcing) controls (ic, bc)
986      * enable at compile-time via
987        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
988      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
989      * Absolute scale somewhat unclear so far
990      * no area weighting was included since no other cost term does so far
991    
992    checkpoint57y_post
993    First step for a NLFS adjoint
994    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
995    o new init. routines for calc_r_star, calc_surf_dr
996    o still need to deal with ini_masks_etc
997    o testreport seemed happy
998    checkpoint57y_pre
999    
1000    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1001    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1002    o add new offset feature to offline pkg (plus minor cleanup)
1003    o cfc fixes for final year of integration
1004    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1005      be in GCHEM_OPTIONS).
1006    
1007    checkpoint57x_post
1008    o fix testreport Pb in multiple test experiment.
1009    o cleanup our namelist syntax in verification:
1010      - make it more F95 standards compliant (some work still needed)
1011      - allows the vast majority of our tests to work with gfortran
1012    o Non-Hydrostatic:
1013     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1014     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1015    o Allow to apply AB on T,S rather than on AB(gT,gS):
1016     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1017     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1018       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1019     - need a "clever" read_pickup to restart from the other AB formulation
1020    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1021    o remove some unused variables (reduces number of compiler warnings)
1022    o adjoint
1023      * Disable useVariableViscosity for adjoint for time being
1024        (there are a number of extensive recomputations)
1025      * Initialize certain variables needed for adjoint
1026    
1027    checkpoint57w_post
1028    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1029                 fix the singleCpuIO RS version of MDSWRITEFIELD
1030       and add a WARNING if using globalFiles=T with multi-processors.
1031    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1032      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1033    o tracer advection scheme:
1034      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1035       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1036       was not very convenient).
1037      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1038       (further tests needed for the implicit DST & Flux-Limiter schemes).
1039    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1040      and sRef for convenience, handy, when you want to initialize
1041      ptracers in a large domain with a constant non-zero value. Also,
1042      untangle ptracers_init.F a little.
1043    
1044    checkpoint57v_post
1045    o change dome exp. to use variable viscosity in side-drag terms.
1046    o remove all the files from the cfc_offline test since they are now
1047      incorporated into tutorial_cfc_offline which has been producing
1048      identical results for a few days of testing
1049    o add new parameter: sideDragFactor to enable half-slip-side BC
1050      and change side-drag S/R to use viscosity from mom_calc_visc
1051      (can switch back by setting sideDragFactor=0.); affects results at
1052      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1053       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1054    o vorticity & strain are now computed without masking, to account for
1055      no-slip-side BC in variable viscosity calculation ; mask is applied
1056      anyway later on, before computing advection/coriolis terms.
1057    o modify exp4 to test new obcs support for reading from external files
1058      and for passive tracers
1059    o fix behavior of ptracers_monitor when monitor output is written to a
1060      netcdf-file; still not independent of monitor.F (writes in the same
1061      file).
1062    o change default value of tRef (put a uniform, meaningful value for ocean
1063      & atmos) and initialize sRef (was missing, as Martin mentioned).
1064    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1065      to be proportional to enstrophy dissipation length.  Thus,
1066       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1067      This is now consistent with Smagorinsky and with the manual.
1068    
1069    checkpoint57u_post
1070    o OBCS and PTRACERS: add open boundary support for passive tracers
1071      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1072        OB-values from file; this is not different from the way theta and salinity
1073        are treated
1074      - however, Orlanski-radiation conditions are not supported, and the model
1075        will stop if you use pTracers and Orlanski at the same time.
1076      - beefed up the rountine obcs_external_fields_load: now only those open
1077        boundary values are overwritten with values from files for which there
1078        are really files, otherwise the OB-fields remain untouched. This makes
1079        it possible to use different OBs at different ends of the domain (as
1080        with EXF)
1081    o reduce number of exch calls in shap_filt (s2).
1082    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1083      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1084    
1085    checkpoint57t_post
1086    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1087    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1088      same truncation, independent of the face number: affects affects several
1089      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1090    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1091      note that biharmonic viscosity + no-slip was not tested in any experiment.
1092    o fix bug in non-linear free-surf side-drag ; generate new output for
1093      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1094    o make mnc honor the writeBinaryPrec flag for most kinds of output
1095    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1096    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1097      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1098    o add brackets in multi-terms sum to get same truncation, independent of
1099      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1100      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1101    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1102      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1103      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1104      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1105      Suggested values of viscosity parameters found in mom_calc_visc.
1106      Many new viscosity diagnostics available.
1107    
1108    checkpoint57s_post
1109    o Add clearing-house for viscosity calculations, mom_calc_visc and
1110      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1111      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1112      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1113      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1114      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1115      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1116      ViscAhStrain and viscAhTension are now retired.
1117    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1118    o In response to JMC's bug report, genmake2 now ignores any soft-links
1119      that it finds in the *current* directory when searching for files.
1120      Soft-links found in any other source directories will still work as
1121      they did before.
1122    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1123      a C routine to unlimit the stack size
1124    o mnc-ify pkg/aim snapshot vars
1125    o mnc-ify pkg/land as requested by Daniel
1126    o various changes to mnc including:
1127      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1128      - output can now be grouped so that all files within a group
1129          change the ITER portion of their names in lock-step together
1130      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1131          and works with both EXCH1 and EXCH2 (but needs more testing)
1132      - writing works for all verification test cases w/ g77 on Linux
1133    
1134    checkpoint57r_post
1135    o make MNC variable initialization happen earlier
1136    o add diagnostics for (almost) each term of the momentum Eq.
1137    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1138    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1139    o remove MINIMAL_TAVE_OUTPUT option ;
1140      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1141    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1142      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1143    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1144    o add time-dependent SST, SSS control
1145    o cost terms in ecco/ modularized (new cost_generic.F)
1146    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1147    o new infrastructure for seaice model vs. obs misfits in seaice/
1148      * driver from the_main_loop.F is seaice_cost_driver.F
1149      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1150      * gradient check in Exp. 6a of natl_box_adjoint/
1151    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1152      (see README file)
1153    
1154    checkpoint57q_post
1155    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1156    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1157      - bug was reported by Jean-Michel and Ian Fenty
1158    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1159      update exp. cpl_aim+ocn output.
1160    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1161      Needed for high-res. runs with large global files
1162      to be able to limit tapelev size
1163    o Changed some tests for adjoint:
1164      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1165      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1166      * global_ocean.90x40x15/ back to default 3-level checkpointing
1167    o Modifications to enable scripted COMMON to MODULE conversion
1168      * verification/OpenAD/code/ has necessary scripts and description;
1169      * converts, compiles and runs successfully;
1170    
1171    checkpoint57p_post
1172    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1173    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1174      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1175    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1176    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1177      (was already the case for dissipation with mom_vecinv,
1178       and also the case for grad.PhiHyd when staggered-timeStep)
1179      This will allow to put dissipation out-off the AB time-stepping.
1180     Unfortunately, affects truncation error. Update output of exp. that "fails"
1181      (cg2d matching number) and leave the others for later: front_relax(10),
1182      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1183      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1184    
1185    checkpoint57o_post
1186    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1187      (2) its ready to be documented during the 20050801 DocFest
1188    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1189      for ideal_2D_oce and lab_sea on linux_ia32_g77
1190    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1191      in global1x1_tot/code_seaice_adj to access indices 32, 33
1192      (worth another tag)
1193    
1194    checkpoint57n_post
1195    o adding precip control xx_precip 32
1196    o adding swflux control xx_swflux 33
1197    o Replacing 10 forcing penalty cost routines by 1 generic.
1198    o Implementing partitioning in time-mean and variable adjustment
1199      for atmos. state.
1200    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1201  o in natl_box_adjoint:  o in natl_box_adjoint:
1202    * updated: results_bulk/    * updated exp 1 to 10
1203    * not yet updated: results/, results_seaice/      (but does not have time-mean vs. variable split results yet)
1204    o updated global1x1/*_seaice_adj/
1205      to incorporate latest changes
1206    o enable useSingleCpuIO for mdsio vector routines
1207      (applies in particular to tapelev I/O)
1208    o removed inefficient K-loop in all active_file*control*.F
1209    
1210  checkpoint57m_post  checkpoint57m_post
1211  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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