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revision 1.390 by jmc, Sun Nov 21 22:22:31 2004 UTC revision 1.889 by jmc, Tue Oct 9 02:43:45 2007 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o add missing cvs $Header$ or $Name$ in eesupp/*, pkg/* & verification/code*
8    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
9    o add new diagnostics to seaice: advective, diffusive fluxes (only for
10      multidim-advection, for scheme 2 they are not filled) and transports,
11      thermodynamic growth rates
12    o change units of EmPmR (inside the code) from m/s to kg/m2/s (mass flux) but
13      leave input file unchanged. Affects results @ truncation level (cg2d match)
14      and update output of experiments: lab_sea(6), global_ocean.90x40x15(10),
15      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
16      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
17      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
18    
19    checkpoint59h
20    o pkg/exf:
21      - improve vectorization by moving if-statement out of loops in
22        exf_mapfields, exf_radiation
23      - exf_bulkformulae.F: introduce 2D fields and vectorize code
24    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
25    o testreport:
26      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
27        monitor & update offline_exf_seaice exp. output.
28      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
29    o pkg/seaice:
30      - bug fix in the evp solver: boundary conditions were affected be
31        masking of zMax/zMin (changes results)
32      - minor bug fix in boundary conditions in seaice_calc_strainrates
33        (changes results for no_slip)
34      - seaice_lsr.F: make interpolation of eta dependent on boundaries
35      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
36      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
37        stress formulation and no-slip boundary conditions
38    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
39      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
40    o pkg/seaice: a first HSALT time stepping equation has been checked in
41    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
42      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
43      without requiring DO-IF statements
44    o pkg/thsice:
45      use continuous power-law function for partition of energy between lateral
46      melting/freezing and thinning/thickening ; old code using step function
47      still available with #undef THSICE_FRACEN_POWERLAW
48      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
49    o testreport: change AD testing : check against results/output_adm.txt
50      using same scripts as for forward test.
51    
52    checkpoint59g
53    o adjoint testing: in preparation for changing testreport:
54      - output format: cost and grad written on separated lines
55      - ad output results in directory "results" (instead of "results_ad")
56    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
57    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
58    o pkg/ecco: allow user defined cost function contributions
59    o testreport:
60      Allow to choose (per experiment) the list of tested output variables
61       and the main variable (used to issue a pass/FAIL ) ;
62      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
63      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
64      Also modify printing of summary:
65       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
66       b) echo the list of tested variables in the individual summary.txt of
67          each experiment.
68    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
69      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
70      (but still depend on the tile decompostion of the domain).
71    o pkg/seaice: change a discretization detail to make the B-grid code
72      "more symmetric". This change is likely to remove all "ridges/leads" that
73      where quasi-aligned with the grid in B-grid solutions. It may also be
74      the solution to the stress coupling issues with the B-grid.
75    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
76      remove .cvsignore from input dir. (since testreport no longer run here).
77    o pkg/thsice:
78     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
79     - fix reshaping of sea-ice just after advection:
80       melt all the ice only if ice-volume is too small.
81     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
82       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
83     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
84    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
85      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
86    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
87      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
88      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
89      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
90      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
91      -> update output.txt
92    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
93     this affects truncation error: -> update output.txt of exp:
94      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
95      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
96    
97    checkpoint59f
98    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
99    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
100      a bounded range (in forward mode)
101    o pkg/ecco, ctrl, autodiff and mom_common:
102     internal parameter controls, completements of implementations
103    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
104    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
105      (not seem any difference in testing results).
106    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
107       at face corners.
108    o pkg/generic_advdiff:
109     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
110      loop range indices for computing vertical advection tendency
111      and do the calculation in the interior only (no overlap) ;
112      for now, only implemented for SOM advection (to save CPU time).
113     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
114    o exch2 adjoint
115      First set of changes:
116      - add exch2 hand-written adjoint templates
117      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
118        This will require cleanup in pkg/autodiff/*.F
119        (changed routines currently kept separate in verif. code/)
120      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
121        that used to hide exch2 or cubed-sphere specific code
122        (commented via 'cph-exch2')
123    o pkg/seaice
124      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
125    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
126       output of global_ocean.cs32x15.thsice .
127    
128    checkpoint59e
129    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
130      for B-grid vector (not yet tested) and C-grid vector (<- only used
131      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
132    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
133      (#ifdef ALLOW_SALT_PLUME)
134    o gather_2d/scatter_2d: removed halo regions
135    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
136      scheme and the corresponding test case (under front_relax dir). For now,
137      only available with Skew-flux form and not yet tested in realistic set-up.
138      adjoint: store directives updated, but gradient checks deteriorated,
139      so maybe GM/Redi adjoint is now broken.
140    o seaice adjoint
141      * add AREA, HEFF, HSNOW as control variable
142        (should not change lab_sea results)
143      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
144    o pkg/seaice:
145      * added computation of saltFlux in seaice_growth;
146        For time being, sea ice salinity is assumed constant
147        contribution of snow flooding to freshening of sea ice is neglected.
148        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
149        defaults to 0.0 in order to maintain backward compatibility.
150        Typical values for SEAICE_salinity are 4 to 10 g/kg.
151      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
152      * added SEAICE_availHeatFrac, which specifies fraction of surface level
153        heat content used to melt or grow ice
154      * commented out cap of HICE: it helps keep ice thinner
155      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
156      * applied OBCS T/S mask to HEFFM sea ice mask
157    
158    checkpoint59d
159    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
160     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
161     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
162    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
163     and change default value of parameter "GM_Small_Number";
164     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
165       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
166       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
167    o pkg/ecco: cost function when applying pkg/smooth to controls
168    o pkg/ctrl: add forcingPrecond run time parameter
169    o pkg/seaice:
170     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
171     - fix bug in metric terms of u-equation in LSR solver (implicit part),
172       changes verification/lab_sea
173     - rearrange implicit part of u-equation in LSR solver to make it easier to
174       read, understand, and debug. This causes changes at the truncation level.
175     - fix (serious) bug in the boundary conditions (sign error in the implicit
176       part) of the LSR solver. Changes all LSR results.
177     - fixed problem with HSNOW initialization to avoid thick snow when AREA
178       is initilized with small values - does not change lab_sea results.
179     - added HsnowFile initialization capability
180    o pkg/smooth: addition to model/src and pkg/ctrl so allow
181     initialization of pkg/smooth and application to control vector
182    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
183    o dependencies: pkg/profiles requires pkg/cal
184    o pkg/profiles:
185     - added option ALLOW_PROFILES_GENERICGRID
186         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
187         that interpolation information (grid points and coefficients) is provided
188         within the netcdf input files.
189         -> sample matlab scripts can be found in MITgcm_contrib/gael
190         that allow you to prepare netcdf input files.
191     - also modified: cleaner include statements, cleaner error print statements,
192       cleaner stops when error, and more tests of the netcdf input files consistency.
193    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
194    o pkg/seaice:
195     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
196       requires a new routine: seaice_diagnostics_fill.F
197     - make sure that seaice does not move if not forced (pressure replacement
198       method, Hibler and Ip, 1995), changes results
199     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
200     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
201       It is turned off by default (=-1.), because it changes the results.
202     - make it possible to read AREA from a file, too.
203    
204    checkpoint59c
205    o add S/R and diagnostics for oceanic mixed-layer depth
206    o move GMRedi call after all vertical mixing schemes (including KPP)
207    o pkg/thsice:
208     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
209      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
210    o pkg/obcs:
211     - bug fix for balance code
212    o pkg/seaice:
213      - allow values of SEAICE_elasticParm > 1
214      - add new parameter SEAICE_evpTauRelax as an alternative
215        to SEAICE_elasticParm
216      - make lsr boundary conditions free slip (by default), changes result
217      - add code for no slip boundary conditions for lsr
218      - set minimum of zeta to zero (and not 4e8) (changes results)
219      - add a cap on AREA after advecting AREA if seaice_growth is not called
220    o change calculation of Visbeck K:
221      - no longer depend on tapering scheme; instead, compute slope (limited
222        by GM_maxSlope). this is equivalent to what was comuted before with
223        clipping or linear tappering.
224      - fix vertical averaging (wrong by 1/2 level)
225      - leave the old version (but will not be maintained) within
226        #ifdef OLD_VISBECK_CALC / #endif
227      - update output of exp. ideal_2D_oce
228    o change error catch in calc_r_star to improve vectorization
229    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
230      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
231    o adjoint:
232      Re-organized adjoint checkpointing according to Matt Mazloff
233      (but with modifs/completions/cleanups)
234      Storing is now bundled into large arrays to optimized I/O
235      (and second step in cleanup of the_main_loop)
236    
237    checkpoint59b
238    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
239      - export/import (between ocean & coupler) fields needed for ocean DIC.
240    o pkg/seaice:
241      - get rid of three more exchanges seaice_calc_viscosities (required
242        different loop boundaries in seaice_lsr and seaice_ocean_stress)
243      - bug fix in seaice_ocean_stress (update of lab_sea required)
244      - reduce loop boundaries to necessary minimum also in seaice_evp
245      - go back to the old way of computing deltaC/Z as the adjoint likes that
246        better
247    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
248      passive tracer to an Age Tracer) + update output.txt
249    o pkg/exf:
250      - implement A-grid / C-grid selection for wind-stress input files.
251      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
252      for now, in exf_bulk_largeyeager04.F only :
253      - change implementation for case where windspeed + 2. components wind-stress
254        are read-in. AND use rhoConstFresh to convert evap.
255    o pkg/seaice:
256      - use correct EXCH_UV for wind-forcing (on A-grid).
257      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
258        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
259    o pkg/exf:
260      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
261      EXF_INTERPOLATION:
262      - merge global_with_exf/code version of exf_interp_read.F
263        to the main code ;
264      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
265        reading the file ; Important: This options needs to be defined to recover
266        previous code.
267        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
268      - no longer loose real*8 precision along the way when using exf_iprec=64.
269    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
270      - change discretisation of evp-solver in order to avoid another exchange
271        (changes lab_sea) and clean up a little
272      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
273        help the adjoint (this also changes the results slightly)
274      - add a few "_d 0" where they had been missing in seaice_evp.F
275      - cleaning up: remove unused seaice_calc_rhs.F
276    o pkg/exf: some cleaning-up:
277      - change various "constants" into runtime parameters
278      - cleaned-up Large&Yeager04 routine which should eventually
279        replace exf_bulkformulae.F (changed names of S/R and CPP)
280        and merged various ALLOW_ATM_WIND options
281     only used with thsice pkg (in thsice_get_exf.F):
282      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
283        which are used when useStabilityFct_overIce=TRUE (= the default)
284      - change default values of ice & snow emissivity and scale downward LW
285        by ice & snow emissivity.
286    o pkg/thsice:
287     fix few little problems, in thsice_calc_thickn.F:
288      - growth vertically (and not laterally) if iceFrac == iceMaskMax
289      - melt only laterally if hIce < hThinIce (as the comments say)
290      and in thsice_extend.F:
291      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
292      - start to form ice as soon as the minimum ice-volume is reachable.
293     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
294      and cpl_aim+ocn
295    o pkg/kpp
296     - move computation of surface related input fields to KPP into a new
297       subroutine kpp_forcing_surf.F
298     - remove wrong (within bi,bj loops) EXCH calls.
299     - little cleaning (add argument myThid in last position, cvs header ...)
300     - for now, fix conservation problem by exchanging KPPviscAz (may not
301       be the best fix)
302    o pkg/seaice
303     - check for inconsistent evp parameter/cpp-flag combination
304     - remove leftover errIO flat for obsolete name list error handling
305    o OpenAD
306     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
307    
308    checkpoint59a
309    o pkg/seaice: some parameter clarifications and a little bit of clean up
310    o pkg/thsice: rename run-time parameters:
311       himin       -> hIceMin
312       himin0      -> hThinIce
313       hihig       -> hThickIce
314       i0          -> i0swFrac
315       transCoef   -> bMeltCoef
316       frac_energy -> fracMelting
317      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
318       with default values (for now) that do not change the results.
319      remove old version of thsice vars advection in pkg/seaice.
320    o in FFIELDS.h:
321      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
322      - make pLoad & sIceLoad always available (but still only used if
323         ATMOSPHERIC_LOADING is #define).
324    o pkg/kpp: replaced _KPP_RL with _RL
325    o bug fixes for vertical diffusivity computations when both KPP and
326        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
327        are no longer updating the vertical diffusivity array
328        (passed as argument) but are (re-) setting those arrays.
329    o pkg/seaice: fix bug in evp solver, while doing that
330      - change (improve?) discretization of stress computations for both
331        cgrid-lsr and evp solver
332      - add a new routine to compute strain rates
333      - the above changes lab_sea results
334      - add no slip conditions for evp solver (off by default), lsr-version
335        may follow
336      - fix exchange for shear at Z-points (does not change lab_sea)
337      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
338        (to force the user to pick a time step since there is not "safe" way
339        of choosing it)
340      - add principal stress diagnostics
341      - rearrange fields for evp a little to avoid having to call a: too many
342        exchanges and b: exchanges for stress trensor components which we do
343        not have.
344      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
345        of evp, complete rewrite for lsr case (latter is does not yet work
346        in all cases)
347    o pkg/kpp: add code to have mixing in shelf ice caverns
348      - add myThid to all kpp routines (long overdue)
349    
350    checkpoint59
351    o pkg/exf:
352      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
353        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
354      - move exf header files from lower_case.h to UPPER_CASE.h ;
355        add missing cvs Header & Name
356      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
357      - add namelist param. selectStressGridPosition, exf_monFreq
358      - retire many _CLIM routines, and remove data.exf_clim
359        + params moved to data.exf
360        + climsst, climsss now handled by exf_set_gen, i.e.
361          climss?period=0 refers to constant field,
362          climss?period=-12 to monthly forcing
363      - split up namelists in data.exf
364    o pkg/seaice:
365      - remove seaice_exch and seaice_exch_uv
366      - remove superfluous exchange of theta
367      - add myThid to seaice_budget_ocean/ice
368      - add new interface for atmospheric wind forcing (C-grid only)
369        + new routine
370        + two new field (taux, tauy for stress over ice)
371        + removed one global field (DAIRN) for C-grid case only
372    o pkg/thsise
373      - 2nd set of modifs for thsice adjoint in conjunction with exf
374    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
375    
376    checkpoint58y_post
377    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
378      vertical diffusivity, similar to that in MOM4; turned on using
379      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
380      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
381    o Added capability for 3D specification of background vertical diffusion
382      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
383      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
384      "data" file that contains the 3D vertical diffusivity coefficients.
385    o ice dynamics (pkg/seaice) with thsice thermodynamics:
386      - add code within pkg thsice to advect & diffuse sea-ice fields
387      similar to (and will replace) what has been added in  seaice_advdiff.F,
388      but: - conserving Mass, Heat & Salt.
389           - better when using non-linear advection scheme (not yet fully tested)
390           - can also be used in atmospheric set-up (for now, only the diffusion).
391    
392    checkpoint58x_post
393    o IO option for global-file compact format:
394      - add options when generating topology (utils/exch2/matlab-topology-generator)
395      - add I/O capability (pkg/mdsio).
396      - adapt utils/matlab/rdmds.m to read this format.
397      for now long-line format not yet supported by pkg/mdsio (& exch2).
398    o shelfice: add a few diagnostics
399    
400    checkpoint58w_post
401    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
402      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
403      (and replace horiVertRatio in NH code).
404      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
405                         and tutorial_plume_on_slope (sensitive to truncation)
406    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
407      directly to drive seaice model (C-grid only)
408    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
409     - reintroduce computation of wind from stress,
410     - compute tau (in exf_bulkformulae.F) from windstress averaged to
411       mass points to avoid tau = 0
412     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
413    o rdmnc.m: make it work with "global" files created with gluemnc
414    o rdmnc.m : some improvements in dealing with singleton dimension
415      (tested on all testreport mnc output files).
416    o genmake2: disable pkg/profiles if netcdf test fails.
417    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
418    o move call to cal_readparms up to make calendar parameters/variable available
419      to all packages
420    
421    checkpoint58v_post
422    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
423      useDynP_inEos_Zc tested.
424    o pkg/exf: changes to properly interpolate/mask/scale initial fields
425    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
426      and portions thereof.  See read_cs.txt for description and examples.
427    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
428      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
429      following the great-circle arc between those 2 points.
430    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
431      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
432    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
433     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
434     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
435     - still needs work (not working with some options ; efficiency to improve)
436       and serious testing.
437     - use this scheme for temperature & salinity in 2 advection test exp.:
438       advect_xy & advect_xz, respectively.
439    
440    checkpoint58u_post
441    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
442    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
443    o testreport: add option "-skipdir" to skip some test.
444    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
445      momentum calculation.
446    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
447    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
448      remove checkpoint.F and the_correction_step.F (no longer used);
449      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
450    o add option (linFSConserveTr) to correct for tracer source/sink due to
451      Linear Free surface
452    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
453    o pkg/thsice: fix reading mnc-pickups
454    
455    checkpoint58t_post
456    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
457    o pkg/mdsio:
458     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
459       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
460       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
461     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
462     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
463       either MDS_READ_FIELD or MDS_WRITE_FIELD )
464     - new S/R (to replace MDSWRITEMETA), which allows to write more
465       informations (variable names, time ...) to meta files.
466     - modify rdmds.m to give back the meta file content.
467    o pkg/diagnostics: change vertical interpolation to be safer, and more
468       flexible (define p-levels to interpolate to in data.diagnostics);
469      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
470       diagnostic pointer.
471    o pkg/seaice: more cleaning up of seaice_growth, added many comments
472    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
473    o fix multi-category seaice:
474     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
475       SEAICE_MULTICATEGORY
476     - fix short wave heat flux
477    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
478       and allow to use EVP solver. Change forward lab_sea: test both EVP
479       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
480    o Initial check-in of lab_sea adjoint
481      (very similar to natl_box_adjoint/code_seaice)
482      * used C-grid and EVP solver
483      * used KPP, GM/Redi
484      * uses inAdExact=.TRUE.
485      * gradient checks fail for both ADM and TLM
486        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
487        f.d. gradients actually seem more problematic than ADM, TLM gradients;
488        issue is related to forward mismatch between g77 an ifort
489    o pkg/seaice: overhaul of thermodynamics
490     - growth.F and groatb.F are replaced by new routine seaice_growth.F
491     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
492     - move a few global fields out of SEAICE.h into seaice_growth.F and
493       make them 2D (FICE/QNETO/ ...)
494     - remove FO (it is the same as QNETO)
495     - introduce a few local fields to avoid modifying external fields such
496       as atemp, etc.
497    
498    checkpoint58s_post
499    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
500      changed exf_set_gen.F so that
501        genperiod=0 means input file is one time-constant field and
502        genperiod=-12 means input file contains 12 monthly means
503    o CG2D: use pre-computed solver main-diagonal (stored in common block);
504      this affects truncation error ; generate new output file for exp. which
505      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
506        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
507        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
508        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
509        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
510        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
511    o start implementation of deep-atmosphere and anelastic formulation
512    o verification: remove 2nd copy of input files and use script "prepare_run"
513      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
514    o mom_common/vecinv/fluxform: fix a few initialisation isssues
515    o profiles: fix for multithreaded case
516    
517    o diagnostics: rename few diags:
518      s/'PRESSURE'/'RCENTER '/g
519      s/'TICE    '/'oceFreez'/g
520      s/'TAUX    '/'oceTAUX '/g
521      s/'TAUY    '/'oceTAUY '/g
522      s/'SWFLUX  '/'oceQsw  '/g
523      s/DIFx/DFxE/g
524      s/DIFy/DFyE/g
525      and add few ocean-forcing diagnostics:
526      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
527    o modifications to pkg/seaice/growth.F and budget.F, which change results of
528      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
529      as actual snow thickness.  It now refers everywhere to effective snow
530      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
531    
532    checkpoint58r_post
533    o modifications to pkg/seaice/growth.F, which change results of
534      lab_sea experiment: fixes pertain to melting snow over open water, to
535      masking EVAP under sea ice, and to using the correct AREA variable for
536      computations of EVAP, PRECIP, HSNOW, and GHEFF
537    o add ability to read bathy, salt, and theta using MNC (off by def)
538    o add flooding algorithm and advection of HSNOW for pkg/seaice;
539      both are turned off by default and do no change any results
540    o seaice advection with pkg/thsice: a step toward the use of non-linear
541      advection scheme, but #ifdef or commented out for now (requires more EXCH).
542    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
543      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
544      in natl_box (affects results @ truncation level: update output.txt)
545    o multi-threading and IO:
546      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
547      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
548        (needed to work with SingleCpuIO): tested in all verif. exp.
549    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
550      affects the results (but none of the verification test uses this scheme).
551    o Adding some pkg/diagnostics capability to pkg/seaice
552      (will certainly be subject to changes)
553    o ctrl: adding new control variables:
554      lwflux, lwdown, evap, snowprecip, apressure, runoff
555    
556    checkpoint58q_post
557    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
558      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
559      high_res_cube configuration by 4% on Columbia.
560    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
561      add (in global_with_exf/code) a version of EXF_INTERP_READ without
562      dynamical allocation (seems to work in multi-threaded).
563    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
564      single CPU io) so that TAF does not have to see EESUPPORT.h
565    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
566    
567    checkpoint58p_post
568    o obcs: stop if obcs is used with useCDscheme = .true.
569    o shelfice:
570     - fix a sign error so that no slip at shelfice interface works
571     - remove stop for combination non-hydrostatic code and shelfice. That does
572       not mean, that the results are correct, but at least they are numerically
573       stable
574    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
575    o added adjoint exch routined for all exch*3d* routines
576      and updated flow directives
577    
578    checkpoint58o_post
579    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
580      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
581    o change controling S/R for writing pickup file (new S/R do_write_pickup)
582      and clean-up reading/writing of pickup files.
583    o fix local version of read/write pickup (NH part) in rotating_tank/code
584    o simplify EXCH interface:
585     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
586     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
587    o added the regrid package
588    o shelfice:
589     - add a simple boundary layer scheme to reduce noise
590     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
591    
592    checkpoint58n_post
593    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
594       local variable (not in common block).
595    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
596      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
597      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
598        to work with SingleCpuIO.
599    o add "_d 0" to real constant of pkg/cfc subroutines ;
600       update exp. cfc_exemple & tutorial_cfc_offline output files.
601    o multi-threading and IO:
602      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
603        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
604      - barrier before and after reading.
605      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
606      - avoid using MDS_WRITELOCAL for LAND pkg output.
607      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
608        common-block variables ; Allows multi-threading with master-thread IO.
609    o change default MAX_NO_THREADS from 32 to 4 ;
610      and stop cleanly when MAX_NO_THREADS is too small.
611    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
612    
613    checkpoint58m_post
614    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
615       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
616    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
617       keep global_ocean.90x40x15 (for AD testing) with former secondary test
618       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
619    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
620        add MITgcm_tutorials (= code + all the tutorials)
621    o ecco, option to compute cost for total ssh (mean+anom)
622    o consistent with addition of ptracer and ssh in pkg/profiles
623    o profiles: adding ptracer and ssh
624    o testreport: change multi-test output-file name
625      (from output.txt.{name} to output.{name}.txt)
626    o profiles: now ok for mutli-tiles case
627    o seaice: add 4 parameters for different advection schemes for area,
628      (effective) seaice thickness, enthalphy, and snow height. Their default
629      is the standard parameter SEAICEadvScheme
630    o calc_gw:
631     - add cosFacU in zonal viscous flux (harmonic.visc.).
632     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
633       of tutorial_plume_on_slope.
634    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
635    o calc_gw: true flux-form, account for horizontal grid spacing.
636      update rotating_tank results, but not plume_on_slope (affected at
637      truncation level, 11 digits).
638    
639    checkpoint58l_post
640    o calc_gw:
641     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
642     - remove side-drag for now (need to fix it); update plume_on_slope results.
643     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
644    o commit code to make SST/SSS weights spatially variable
645      (based on either variable in-situ or variable initial T/S weights)
646    o pkg/ecco:
647      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
648        now based on horizontally varying weights wthetaLev, wsaltLev
649      * cost_averagesflags now returns year indices in addition to day, month
650      * sflux balance is performed on annual basis
651        (sflxumm, sfluxmm2, bal_sfluxmm)
652      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
653        including separate counting and multipliers
654    o pkg/rbcs
655      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
656    
657    checkpoint58k_post
658    o testreport:
659     - always build in dir. "build" (if not there, mkdir build instead of building
660       & running in input)
661     - run in dir run (if it exists), in build otherwise.
662     - call prepare_run (if input/prepare_run exists)
663     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
664    o pkg/exf modifications to interpolation and rotation routines for more
665       reasonable treatment of North Pole singularity: for tracers North Pole
666       value is set to northernmost zonal-mean value, for zonal velocity it is
667       set to zero, and for meridional velocity it is set to northernmost value.
668    o pkg/exf/exf_check_range.F
669     - add tile index to diagnostics and move stop statement to the very
670       end of the routine.
671    o pkg/diagnostics: (diagnostics_main_init.F)
672      define title of isomorphic variables according to the current config.
673    o pkg/thsice with pkg/seaice dynamics:
674    - fix domain of computation (interior only, required for exf) and do exchanges
675    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
676    o towards a standard way of dealing with multi-threading in MONITOR
677      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
678    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
679       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
680    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
681    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
682    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
683       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
684    o tracer advection:
685     - clean-up and simplify calc_common_factors.F
686     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
687       advection subroutine (but still not used within DST advection S/R)
688    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
689    
690    checkpoint58j_post
691    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
692      from file (collects calls previously in FORWARD_STEP)
693    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
694    o adjoint store dir. adjusted accordingly
695    o genmake2
696      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
697    
698    checkpoint58i_post
699    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
700      on wind stress (SEAICEstressFactor defaults to 1.)
701    o Total number of Timers is finite (<=40): comment out 2 non-essential one
702      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
703    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
704      on CS-grid: no longer loosing mass.
705    o exf & curvilinear-grid: no longer modify longitude xC & xG.
706    o pkg/ggl90: fix sloppy output and fix a bug
707    o pkg/seaice: added SEAICEuseEVPpickup parameter
708      - Set to false in order to start EVP solver with
709        non-EVP pickup files when using SEAICEuseEVP
710      - fix sign error in diffusion in seaice_calc_rhs
711    
712    checkpoint58h_post
713    * Modifications for bottom topography control
714      o replace hFacC by _hFacC at various places
715      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
716      o add non-self-adjoint cg2d_nsa
717      o update autodiff support routines
718      o re-initialise hfac after ctrl_depth_ini
719      o works for 5x5 box, doesnt work for global_ocean.90x40x15
720    * Adding verification for 5x5 box (4-layer) bottom topography control
721    
722    checkpoint58g_post
723    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
724       used for mean seasonal cycle, mean diurnal cycle); add an example
725       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
726    o pkg/ggl90:
727      - add parameter (minimum surface kinetic energy)
728      - fix bug (avoiding division by zero)
729    o couple pkg/thsice to pkg/seaice:
730      - modify advection in seaice to accomodate new scalar fields to be advected
731      - only muliDimAdection scheme work with seaice/thsice
732      - mapping of thsice-variables to seaice-variables, back and forth
733      - does not break the verification experiments, but does not give the
734        desired results either
735    o pkg/seaice
736      - make (default) second order advection a bit less confusing?
737    
738    checkpoint58f_post
739    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
740      to pkg/seaice):
741      - new routines thsice_map_exf and thsice_get_exf provide the interface
742      - add an additional formal parameter to thsice_solve4temp
743    o pkg/exf:
744      - add new fields wspeed, snowprecip (to be able to couple to thsice)
745      - correct Stefan-Boltzmann constant
746      - new parameter for longwave surface emittance
747      - separate some stuff from exf_bulkformulae into new routines  
748        exf_radiation, exf_wind
749      - add new parameters and constants: longwave emissivity for ocean, ice
750        and snow, evaporation parameters over ice
751      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
752        either wind from stress or stress from wind
753    o pkg/thSIce:
754    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
755    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
756       and THSICE_CALC_THICKN
757    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
758    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
759      to make debugging easier.
760    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
761    o pkg/bulk_force:
762      - clean-up comments and parameters ;
763      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
764    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
765      generate new output for test-experiment: aim.5l_cs.thSI
766    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
767      testreport accordingly
768    
769    checkpoint58e_post
770    o SEAICE_CGRID adjoint done
771    o R_STAR adjoint implemented.
772      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
773      * need to sort out init. of h0facc, etc.
774    o Make pkg/profile fully independent of ecco,cost, etc. stuff
775      to be able to use it in pure forward.
776    
777    checkpoint58d_post
778    o upgrade simple test-experiment to tutorial example:
779     step.1: duplicate the experiment and (step.2) will remove the old copy.
780      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
781      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
782      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
783      tutorial_global_oce_biogeo    <- copy of dic_example
784      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
785      tutorial_plume_on_slope       <- copy of plume_on_slope
786      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
787      tutorial_global_oce_optim     <- empty for now (David ?)
788      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
789     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
790    o correct a sign problem in cost_scat.F
791    o obcs and ptracers: fix boundary conditions for advections schemes
792      with larger stencil
793    o thsice adjoint: start
794    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
795      completeness
796    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
797      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
798    o ptracers adjoint:
799      * avoid extensive recomputatations
800      * fix missing re-init. of gptr (missed by TAF)
801    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
802      me to turn off the excessive output to STDOUT that this package produces
803    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
804      and add those terms in Vector-Invariant formulation.
805    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
806      if the control period (xx_hfluxperiod etc) is 0
807    o in profiles pkg, clean routines and fix details
808    o in ecco pkg, reading ssh data:
809      fix problem in case the model does not start at iter0=0
810    o fix mnc-pickup/restart for ptracers
811    o new package prifiles:
812      code to compute profile-based cost by Gael Forget
813      (modifs in ecco, ctrl, autodiff)
814    o Benign bug fix in initialization (spotted by M. Mazloff) of
815      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
816    
817    checkpoint58c_post
818    o adjoint: finish NLFS adjoint and provide reference output in
819      verification/global_ocean.90x40x15/results_ad_nlfs
820    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
821      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
822      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
823      with SEAICE_CGRID defined.
824    o move calendarDumps from "data" to "data.cal" and clean-up the code
825      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
826    o add useEXF & useCAL flags (for now, set in hard-coded way)
827    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
828      (were missing in NH mode, and wrong in quasihydrostatic mode).
829      waiting for Chris updated version of calc_gw to add those CALLs.
830    o fix bug in quasihydrostatic S/R ;
831      add a test for this option: global_ocean.90x40x15.qshyd
832    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
833      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
834    o add on/off flag useOffLine for package OFFLINE
835    o seaice:
836      - modify advection so that it works also on the C-grid
837      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
838        problem in multi-tile runs with C-grid
839      - add flags for clipping ice velocities and/or masking solver forcing
840      - fix drag (ocean on ice) formulation and a bug that caused noise in the
841        C-grid solver
842      - added a few comments to seaice_diffusion.F
843      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
844        are now exclusive)
845      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
846        required re-ordering the code a little:
847       + make DAIRN global variable (defined in SEAICE)
848       + move computation of the viscosities eta and zeta into a new separate
849         routine (because I need to recompute them in seaice_ocean_stress.F)
850    
851    checkpoint58b_post
852    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
853      update output.txt of exp. aim.5l_cs.thSI
854    o various mnc cleanups and improvements:
855      + shrink lookup tables by factor of ~4
856      + better error reporting when running out of lookup space
857      + able to handle longer path/file names (up to 500 chars)
858    o adjoint:
859      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
860      - TBD: "hidden" mom_vecinv recomp. in dynamics
861    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
862     (allow to differentiate between forcing components using new integer flags:
863      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
864     and add new flag to put Dissipation tendency out of Adams-Bashforth.
865    o ecco
866      - enable trend removal from SSH anomaly obs.
867    o adjoint
868      - a fix for PmEpR when #undef EXACT_CONSERV
869      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
870      - try to fix "hidden" recomp. in forward_step for NLFS
871        (NLFS seems broken sometimes after I checked it in)
872    o seaice:
873     - add c-grid version of the dynamic solver:
874       + three new routines that are the c-grid substitute lsr, dynsolver
875         and ostres
876       + put a few fields that were local to dynsolver into global common
877         blocks, so that I can move the computation of stresses etc into
878         seaice_lsr (saves coding but may break the adjoint).
879     - replace more hardwired parameters by runtime parameters
880     - add ice masks that mask the rhs of the implicit solvers where there
881       is no ice (commented out in seaice_dynsolver, because i am not sure
882       if this works properly), eventually this should replace the clipping
883       of ice velocities in seaice_dynsolver to +/-40cm/s.
884    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
885      include it only where its needed
886    o move balancing of fluxes before the call of external_forcing_surf
887    o seaice:
888      - correct units of turning angles (now they are really in degrees)
889      - move computation of GWATX/Y out of main routine into dynsolver
890      - initialize GWATX/Y in seaice_init
891    o Apply mask on Fresh-Water flux (needed for SSH forcing).
892      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
893    o seaice: add runtime flags for turning angles (default to zero)
894    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
895      and trend from exf forcing and ctrl control adjustments
896    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
897      (since checkpoint57x_post)
898    o change the default rotation period to 86164.s = the Earth rotation
899    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
900      and based on a reference stratification. Tested within hs94.cs-32x32x5.
901    o seaice advection: add code for choosing between the default (2nd order
902      central differences) and multiDim advection schemes provided by
903      pkg/generic_advdiff
904    o seaice:
905      - removed all references to SEAICE_GRID.h fields from
906        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
907        (cubed-sphere configuration will change a little)
908      - grid computations in seaice_init are obsolete now.
909      - cleaned up code a little so that is easier to read (hopefully).
910      - added new (better?) discretizations of default advection and diffusion
911        (turn on with SEAICEuseFluxForm)
912      - replace 1 in 3d global fields by kSurface in growth.F
913      
914    checkpoint58a_post
915    o seaice:
916      - bug fix in advect.F
917    o shelfice:
918      - separate shelfice load anomaly from pload (breaks with time
919        dependent forcing), => introduce constant field shelficeLoadAnomaly.
920        Its default is 0., but it may be computed more cleverly from (unknown)
921        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
922        done offline. A good approximation of the pressure load anomaly is
923        necessary to avoid large initial adjustment processes underneath
924        deep-reaching shelfice.
925      - small fix in ISOMIP shelfice_thermodynamics
926      - add more sophisticated thermodynamics of Hellmer (1989), this is
927        now the default
928      - give a few constants more intuitive names
929    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
930      if bulk formulae are used in long integration (especially EmPmR). Turn
931      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
932      if balancePrintMean, the imbalance that is substracted is printed to
933      STDOUT.
934    o fix bug (typo) in obcs_apply_eta.F
935    o add a new package shelfice which enables us to model the circulation
936      underneath shelf-ice with draughts of hundreds of meters.
937     - works
938     - to do: + include improved thermodynamics
939              + check whether kSurfC (from model/inc/SURFACE.h) can be used
940                instead of new field kTopC
941              + can we use topoFile, Ro_surf and existing code in ini_depth.F
942                instead of new field R_shelfIce and new code in ini_depth.F
943                and ini_mask_etc.F?
944              + adjust vertical mixing schemes?
945    o seaice pkg:
946     - add a cpp-flag to include a simple formula for a salinity dependent
947       freezing point of sea water at the surface
948     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
949       meridional stresses are now different (and hopefully correct)
950    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
951       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
952       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
953    o pkg/diagnostics: add options and parameters for regional-statistics
954       diagnostics ; define regions by reading a region-mask from a file
955       (might add other options later)
956    o pkg/bulk_force:
957     - add option and parameters to use AIM surface-flux formulae.
958     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
959       others forcing fields (defined in PARM05, parameter file "data") are loaded
960       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
961     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
962     - use the right EXCH call for uwind,vwind (to work on CS-grid).
963     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
964       and parameters (note: calcWindStress replaces .NOT.readwindstress).
965     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
966    
967    checkpoint58
968    o add "--embed-source" option to genmake2 which, when the supporting
969      tools can be compiled (as determined by genmake2) will turn on the
970      embed_files package which then embeds the entire MITgcm source code
971      (*.[fFhc] + Makefile) used for the build within the executable
972      - requested by CNH but off by default
973      - adds a paltry <9MB to the mitgcmuv executable in most cases
974      - only writes the output when useEMBEDSRC in eedata is true
975    o clean up 3-dim. relaxation codes:
976      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
977      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
978      * Thanks to Tom Haine for testing!
979    
980    checkpoint57z_post
981    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
982      affects output (@ truncation level) of exp. plume_on_slope ; updated.
983    o fix the pickup behavior for obcs in combination with ptracers
984    o fix a bug in ptracers_external_fields_load
985    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
986      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
987    o transfered surface NH pressure to eta field (if exactConserv).
988    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
989         and update lab_sea output.txt file.
990    o completing 3-dim. relaxation code: additional term
991         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
992      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
993      * At compile time, in "EXF_OPTIONS.h" set
994          #define  ALLOW_CLIMTEMP_RELAXATION
995          #define  ALLOW_CLIMSALT_RELAXATION
996      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
997          tauThetaClimRelax3Dim = 15552000.0,
998          tauSaltClimRelax3Dim  = 15552000.0,
999      * 3 cases:
1000          1) Use a constant-in-time 3-dim. field
1001          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1002          3) Real-time relax. to time-evolving prescribed field
1003    o Adding Laplacian-type smoothness constraint on
1004      initial and boundary (forcing) controls (ic, bc)
1005      * enable at compile-time via
1006        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1007      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1008      * Absolute scale somewhat unclear so far
1009      * no area weighting was included since no other cost term does so far
1010    
1011    checkpoint57y_post
1012    First step for a NLFS adjoint
1013    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1014    o new init. routines for calc_r_star, calc_surf_dr
1015    o still need to deal with ini_masks_etc
1016    o testreport seemed happy
1017    checkpoint57y_pre
1018    
1019    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1020    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1021    o add new offset feature to offline pkg (plus minor cleanup)
1022    o cfc fixes for final year of integration
1023    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1024      be in GCHEM_OPTIONS).
1025    
1026    checkpoint57x_post
1027    o fix testreport Pb in multiple test experiment.
1028    o cleanup our namelist syntax in verification:
1029      - make it more F95 standards compliant (some work still needed)
1030      - allows the vast majority of our tests to work with gfortran
1031    o Non-Hydrostatic:
1032     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1033     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1034    o Allow to apply AB on T,S rather than on AB(gT,gS):
1035     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1036     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1037       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1038     - need a "clever" read_pickup to restart from the other AB formulation
1039    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1040    o remove some unused variables (reduces number of compiler warnings)
1041    o adjoint
1042      * Disable useVariableViscosity for adjoint for time being
1043        (there are a number of extensive recomputations)
1044      * Initialize certain variables needed for adjoint
1045    
1046    checkpoint57w_post
1047    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1048                 fix the singleCpuIO RS version of MDSWRITEFIELD
1049       and add a WARNING if using globalFiles=T with multi-processors.
1050    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1051      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1052    o tracer advection scheme:
1053      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1054       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1055       was not very convenient).
1056      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1057       (further tests needed for the implicit DST & Flux-Limiter schemes).
1058    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1059      and sRef for convenience, handy, when you want to initialize
1060      ptracers in a large domain with a constant non-zero value. Also,
1061      untangle ptracers_init.F a little.
1062    
1063    checkpoint57v_post
1064    o change dome exp. to use variable viscosity in side-drag terms.
1065    o remove all the files from the cfc_offline test since they are now
1066      incorporated into tutorial_cfc_offline which has been producing
1067      identical results for a few days of testing
1068    o add new parameter: sideDragFactor to enable half-slip-side BC
1069      and change side-drag S/R to use viscosity from mom_calc_visc
1070      (can switch back by setting sideDragFactor=0.); affects results at
1071      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1072       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1073    o vorticity & strain are now computed without masking, to account for
1074      no-slip-side BC in variable viscosity calculation ; mask is applied
1075      anyway later on, before computing advection/coriolis terms.
1076    o modify exp4 to test new obcs support for reading from external files
1077      and for passive tracers
1078    o fix behavior of ptracers_monitor when monitor output is written to a
1079      netcdf-file; still not independent of monitor.F (writes in the same
1080      file).
1081    o change default value of tRef (put a uniform, meaningful value for ocean
1082      & atmos) and initialize sRef (was missing, as Martin mentioned).
1083    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1084      to be proportional to enstrophy dissipation length.  Thus,
1085       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1086      This is now consistent with Smagorinsky and with the manual.
1087    
1088    checkpoint57u_post
1089    o OBCS and PTRACERS: add open boundary support for passive tracers
1090      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1091        OB-values from file; this is not different from the way theta and salinity
1092        are treated
1093      - however, Orlanski-radiation conditions are not supported, and the model
1094        will stop if you use pTracers and Orlanski at the same time.
1095      - beefed up the rountine obcs_external_fields_load: now only those open
1096        boundary values are overwritten with values from files for which there
1097        are really files, otherwise the OB-fields remain untouched. This makes
1098        it possible to use different OBs at different ends of the domain (as
1099        with EXF)
1100    o reduce number of exch calls in shap_filt (s2).
1101    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1102      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1103    
1104    checkpoint57t_post
1105    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1106    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1107      same truncation, independent of the face number: affects affects several
1108      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1109    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1110      note that biharmonic viscosity + no-slip was not tested in any experiment.
1111    o fix bug in non-linear free-surf side-drag ; generate new output for
1112      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1113    o make mnc honor the writeBinaryPrec flag for most kinds of output
1114    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1115    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1116      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1117    o add brackets in multi-terms sum to get same truncation, independent of
1118      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1119      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1120    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1121      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1122      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1123      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1124      Suggested values of viscosity parameters found in mom_calc_visc.
1125      Many new viscosity diagnostics available.
1126    
1127    checkpoint57s_post
1128    o Add clearing-house for viscosity calculations, mom_calc_visc and
1129      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1130      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1131      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1132      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1133      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1134      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1135      ViscAhStrain and viscAhTension are now retired.
1136    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1137    o In response to JMC's bug report, genmake2 now ignores any soft-links
1138      that it finds in the *current* directory when searching for files.
1139      Soft-links found in any other source directories will still work as
1140      they did before.
1141    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1142      a C routine to unlimit the stack size
1143    o mnc-ify pkg/aim snapshot vars
1144    o mnc-ify pkg/land as requested by Daniel
1145    o various changes to mnc including:
1146      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1147      - output can now be grouped so that all files within a group
1148          change the ITER portion of their names in lock-step together
1149      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1150          and works with both EXCH1 and EXCH2 (but needs more testing)
1151      - writing works for all verification test cases w/ g77 on Linux
1152    
1153    checkpoint57r_post
1154    o make MNC variable initialization happen earlier
1155    o add diagnostics for (almost) each term of the momentum Eq.
1156    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1157    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1158    o remove MINIMAL_TAVE_OUTPUT option ;
1159      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1160    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1161      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1162    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1163    o add time-dependent SST, SSS control
1164    o cost terms in ecco/ modularized (new cost_generic.F)
1165    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1166    o new infrastructure for seaice model vs. obs misfits in seaice/
1167      * driver from the_main_loop.F is seaice_cost_driver.F
1168      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1169      * gradient check in Exp. 6a of natl_box_adjoint/
1170    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1171      (see README file)
1172    
1173    checkpoint57q_post
1174    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1175    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1176      - bug was reported by Jean-Michel and Ian Fenty
1177    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1178      update exp. cpl_aim+ocn output.
1179    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1180      Needed for high-res. runs with large global files
1181      to be able to limit tapelev size
1182    o Changed some tests for adjoint:
1183      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1184      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1185      * global_ocean.90x40x15/ back to default 3-level checkpointing
1186    o Modifications to enable scripted COMMON to MODULE conversion
1187      * verification/OpenAD/code/ has necessary scripts and description;
1188      * converts, compiles and runs successfully;
1189    
1190    checkpoint57p_post
1191    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1192    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1193      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1194    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1195    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1196      (was already the case for dissipation with mom_vecinv,
1197       and also the case for grad.PhiHyd when staggered-timeStep)
1198      This will allow to put dissipation out-off the AB time-stepping.
1199     Unfortunately, affects truncation error. Update output of exp. that "fails"
1200      (cg2d matching number) and leave the others for later: front_relax(10),
1201      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1202      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1203    
1204    checkpoint57o_post
1205    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1206      (2) its ready to be documented during the 20050801 DocFest
1207    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1208      for ideal_2D_oce and lab_sea on linux_ia32_g77
1209    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1210      in global1x1_tot/code_seaice_adj to access indices 32, 33
1211      (worth another tag)
1212    
1213    checkpoint57n_post
1214    o adding precip control xx_precip 32
1215    o adding swflux control xx_swflux 33
1216    o Replacing 10 forcing penalty cost routines by 1 generic.
1217    o Implementing partitioning in time-mean and variable adjustment
1218      for atmos. state.
1219    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1220    o in natl_box_adjoint:
1221      * updated exp 1 to 10
1222        (but does not have time-mean vs. variable split results yet)
1223    o updated global1x1/*_seaice_adj/
1224      to incorporate latest changes
1225    o enable useSingleCpuIO for mdsio vector routines
1226      (applies in particular to tapelev I/O)
1227    o removed inefficient K-loop in all active_file*control*.F
1228    
1229    checkpoint57m_post
1230    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1231      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1232    o pkg/exch2: filling of face-corner halo regions is optional
1233      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1234    
1235    checkpoint57l_post
1236     tag before updating tutorials (pre-release-2)
1237    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1238       for output and interpolation of input fields onto model grid)
1239    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1240       Affects results of exp. rotating_tank ; update output.txt.
1241    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1242          and taking the square quantity and/or using a fraction-weight field.
1243    o fix aim_diagnostics_init.F mate numbers.
1244    o add mnc output capability to diagnostics/diagstat and update
1245      our cvsignore files for the ACSII output generated
1246    
1247    checkpoint57k_post
1248    o lab_sea now uses diagnostics package and provides a suite of
1249      new EXF diagnostics output.
1250    
1251    checkpoint57j_post
1252    o exf
1253      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1254        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1255        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1256      * extended diagnostics output
1257        - now includes all EXF variables
1258        - hs, hl moved to common block
1259        - separate S/R for diagnostics, called after ctrl vector is added
1260        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1261        - EXFqnet contains true Qnet (i.e. includes qsw)
1262      * updated verif. lab_sea, global_with_exf
1263      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1264        to ensure that diagnostics sees a true EXFqnet
1265    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1266    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1267      several times with different frequencies.
1268    o mnc-ify the thsice package as requested by Daniel Enderton
1269      - the monitor--MNC output needs work
1270      - many attributes need to be added (most are currently blank)
1271    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1272      - many attributes need to be added (most are currently blank)
1273    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1274    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1275    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1276      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1277         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1278    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1279     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1280    
1281    checkpoint57i_post
1282    o Diagnostics package was changed: diagnostic allocation is now deactivated
1283      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1284    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1285      add 1rst Order upwind vertical Shear.
1286    o add a quick fix for A/B checkpointing in OFFLINE mode
1287    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1288      end-run around the C/Fortran linking horror in eesup/src/timers.F
1289    o added pkg/runclock: allows user to terminate run based on wall clock
1290    o added non-hydrostatic scaling parameter: nh_am2
1291    o pkg/my82: futile attempt to make results compiler-independent by adding
1292      some "_d 0", etc. no effect.
1293    o for mnc output, fill the 'T' coordinate var with myTime and create a
1294      separate 'iter' variable for iteration count
1295    o pkg/diagnostics:
1296      add new capability: output of Global/Regional & per-level statistics ;
1297      tested against monitor output (including land & thSIce) on various exp.
1298    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1299    
1300    checkpoint57h_done
1301      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1302      data.diagnostics, data.gchem, data.ptracers) is done.
1303    
1304    o pkg/diagnostics: prepare for Global/Regional statistics.
1305      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1306    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1307      and rename it: DIFFERENT_MULTIPLE
1308    
1309    checkpoint57h_post
1310    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1311    o pkg/diagnostics: change output frequency, now in seconds (instead
1312      of Nb of iterations). This requires to change data.diagnostics.
1313    checkpoint57h_pre
1314    
1315    o in mnc, let the user create the output dir if both mnc_outdir_date
1316      and mnc_outdir_num are false
1317    o add fflags() to pkg/diagnostics which allows one to specify, on a
1318      per-file basis, the file precision [default behavior is unchanged]
1319    o added diagnostics to pkg/kpp, including computation of mixed layer
1320      depth based on a temperature/density criterion
1321    o updated verification/natl_box to test the new pkg/kpp diagnostics
1322    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1323    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1324    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1325      not mnc -- this mistake was found by JMC and is now corrected
1326    
1327    checkpoint57g_post
1328    o add Adams-Bashforth 3rd Order time stepping:
1329      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1330      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1331    checkpoint57g_pre
1332    
1333    o make lambda[Theta,Salt]ClimRelax spatially varying
1334      (default remains spatially uniform constant based on tau)
1335    o added new control variables
1336      * init. uVel, vVel, etanN
1337      * lambda[Theta,Salt]ClimRelax
1338    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1339      (suggested by G. Forget)
1340    
1341    checkpoint57f_post
1342    o add parameter "baseTime" = model base time = time at iteration zero
1343      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1344      account for baseTime shift
1345    o move Coriolis arrays from PARAMS.h to GRID.h
1346    checkpoint57f_pre
1347    
1348    o mnc-ifying the seaice package
1349    o introduced an alternative length scale calculation for use in the limiting
1350      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1351    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1352    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1353      as well as grad(vort3).  Made it compatible with both approximate form
1354      for the cubed sphere and full form of these gradients.  Added flag
1355      useFullLeith to select between approximate and full form.  
1356    o add "d0" in getcon.F to reduce differences between compilers/platforms
1357      update output.txt of exp. fizhi-gridalt-hs
1358    o change port_rand funtion to allow to set the seed.
1359    o fix obscure MNC bug involving conversion between reals and integers
1360      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1361        new version is now more standards-compliant
1362    o adjoint-related modifications
1363      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1364      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1365      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1366    
1367    checkpoint57e_post
1368    o Adding eddy stress controls a la Ferreira et al.
1369    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1370    
1371    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1372      update output.txt of exp. fizhi-gridalt-hs
1373    o add more "Z" dimensions and associated coordinate vars to MNC
1374    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1375    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1376      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1377      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1378      months and years.  Requires pkg/cal.
1379    o diagnostics: add pickup functionality
1380      - off by default for backwards compatibility
1381      - current version only uses MDSIO -- MNC will be added
1382    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1383    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1384    
1385    checkpoint57d_post
1386    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1387    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1388      output from the diagnostics package
1389    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1390    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1391      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1392    o add coordinate variables to the MNC output from the diagnostics package
1393    o change MNC-flags default value: true when useMNC=TRUE
1394    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1395      the ability (off by default) to read the grid information using MNC
1396    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1397    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1398    o do snap-shot diagnostics at the middle of the time-interval (instead of
1399      at the end).
1400    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1401      new test for AIM with thSIce + slab-ocean
1402    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1403    o move state variable diagnostics to the beginning of the time step ;
1404      (note: still needs some work specially for snap-shot diagnostics)
1405      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1406    
1407    checkpoint57c_post
1408    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1409    o generate new output.txt files on faulks with g77 & the new -ieee option
1410    checkpoint57c_pre
1411    
1412    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1413      update output.txt of exp. global_ocean.90x40x15
1414    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1415      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1416    o add saltFlux(+File) forcing capability with periodicExternalForcing
1417    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1418    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1419    o improvements for the MNC output from DIAGNOSTICS:
1420      - correct handling of the unlimitied dimension
1421      - all dims now have associated coordinate variables
1422      - variables located at U, V, and Corner ("Z") points are now written
1423        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1424        *all* data points are output
1425    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1426    o added pkg/seaice/seaice_monitor.F
1427    o mdsio_readfield.F can now read files visible only to master MPI process.
1428    o pkg/seaice: some test code for ice-modified ocean stress
1429    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1430      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1431      spurious negative numbers for precipitation and humidity.  Will cause
1432      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1433    o pkg/ctrl/
1434      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1435        May be enabled via doPackDiag
1436      *  introduce z-scaling of
1437         + gradient (doZscalePack) and
1438         + control (doZscaleUnpack)
1439    o pkg/mdsio/
1440      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1441      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1442    
1443    checkpoint57b_post
1444    o simplify options in diagnostics_fill arguments (remove weird combinations)
1445    o fix MNC coordinate variables so that they now contain per-face index
1446      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1447      general, EXCH2 grids are only aligned to a "local" coordinate system
1448    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1449    o Implement instantaneous output within pkg diagnostics:
1450      setting a negative frequency in data.diagnostics produces
1451     "snap-shot" output (as opposed to time-average if freq > 0)
1452    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1453      NOTE: change ptracer diagnostics name: use 2 characters to work with
1454            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1455    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1456      becomes the coordinate variable for the 'T' dimension
1457    o add CF-style coordinate variables to MNC
1458      - just a first cut:  numbers are meaningless on the cubesphere and
1459        missing along the T axis but otherwise it works!
1460    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1461    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1462    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1463      this is based directly on what the model compute, so that the content of
1464      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1465    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1466    o clean up build options files for SunOS, in particular
1467      - remove -traditional from xmakedepend
1468      - change -xarch=v9 to -xarch=native for f77
1469      - restore use of make (not gmake)
1470      - add CC=gcc if using g77
1471    o changes per discussion of AM, JMC, & EH3 today:
1472      - move redundant "grid" variables out of "state" -- in preparation of
1473        creating proper CF-style coordinate variables and in recognition
1474        that any/all grid variables can be easily copied (eg. w/NCO) from
1475        the grid files into any of the other NetCDF files
1476      - *always* output grid variables with MDSIO (this will eventually be
1477        changed)
1478      - output MNC grid file if useMNC is true
1479    o every instance of _END_MASTER() has been found and replaced with
1480      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1481      preprocessors
1482    o re-arrange diagnostics pkg initialisation:
1483     - allow each package to extend the available diagnostics list
1484     - add some checking and fix small problems (multi-threaded, ...)
1485     - new S/R diagnostics_fill (replace fill_diagnostics):
1486       look through the short list of active diag. (instead of the long list)
1487       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1488    
1489    checkpoint57a_post
1490    o this set of changes restores TAMC compatibility
1491      tested for global_ocean.90x40x15 adjoint on trough
1492      (what a pain)
1493    
1494    checkpoint57a_pre
1495    o some modifs in tools/build_options for sunos
1496    o call ctrl_pack for ctrl at end for optimcycle=0
1497    
1498    checkpoint57
1499    o add horizontal bi-harmonic viscosity for vertical velocity
1500      - new parameter viscA4W (defaults to viscA4)
1501      - affects only non-hydrostatic code
1502      - to be done: no-slip lateral boundary conditions
1503    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1504    o implement Implicit Vertical advection for pTracers
1505    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1506      (implemented also for implicit vertical diffusion & advection)
1507    o OBCS: extend application of tracer open boundary conditions
1508      to a strip beyond the boundary of width Olx/Oly
1509    o add call monitor to TAF set of required calls (flow directives)
1510      and include in natl_box_adjoint
1511    o untangle a few ifdefs related to cost, ctrl, autodiff
1512      untangel a few ALLOW_ECCO_OPTIMIZATION
1513    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1514      (theta2, salt2 in ecco_cost_weights)
1515    
1516    checkpoint56c_post
1517    o OBCS as control variables
1518      - update ctrl_ad_diff.list, obcs_ad_diff.list
1519      - remove balance of obcs controls from default
1520      - fix index bug nobcs in ctrl_init
1521      - fix dummy fields filen in ctrl_pack
1522      - add dummy weights for obcs
1523    o lsopt: comment out fort.94 output
1524    o optim:
1525      - remove unnecessary header files
1526      - adjusted namelists
1527      - add xerbla.F to Makefile
1528    o exf:
1529      - multiple modifications of exf_check_range
1530      - unit change in exf_init_runoff from [m/year] to [m/s]
1531    o mdsio:
1532      - i/o-vector change debugLevel from debLevA to debLevB
1533    
1534    checkpoint56b_post
1535    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1536      is called from DO_THE_MODEL_IO
1537      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1538      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1539      - clean up PTRACERS_WRITE_TIMEAVE a little
1540    o add another verification experiment that tests both the cfc-pkg and
1541      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1542      reactive tendencies treated inline with regular timestepping
1543    o testreport previously did a lousy job of comparing small numbers, so
1544      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1545      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1546      testreport.
1547    o ptracers_monitor: bug fix for MPI
1548    
1549    checkpoint56a_post
1550    o GCHEM: finish reorganizating the package
1551      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1552        (introduces another 3D-array for each passive tracer, but only if
1553        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1554        gchemTendency is not needed because the timestep is done separately)
1555      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1556      - GCHEM is now---more or less cleanly---separate from PTRACERS
1557      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1558        so clear to me how that should be done in a general way.
1559    o CFC: improve formatting of output in CFC_ATMOS
1560    o PTRACERS:
1561      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1562        that ALL experiments with ptracers enable can be checked. This makes
1563        GCHEM_MONITOR obsolete.
1564      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1565        monitorFreq
1566      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1567    o add PTRACERS (PTR0[1-5]) to testreport output
1568    o exf_check_range:
1569      * default changed to .TRUE.
1570      * will check values for niter0 if debLevA, every timestep if debLevB
1571      * STOP in exf_check_range if 'out of range'
1572      * range chosen generous to allow for potential extema
1573      TBD: a version with stricter range
1574           permitted range would be runtime parameters
1575  o GMredi:  o GMredi:
1576    - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;    - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1577    - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.    - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
# Line 11  o GCHEM: Line 1580  o GCHEM:
1580    - move call to GCHEM_FORCING_SEP, so that it is now called before    - move call to GCHEM_FORCING_SEP, so that it is now called before
1581      the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP      the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1582    - introduced a useGCHEM runtime flag and applied it everywhere.    - introduced a useGCHEM runtime flag and applied it everywhere.
1583      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1584        this flag is now only visible within GCHEM-pkg routines.
1585      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1586        be replaced by a 3D array that is computed before thermodynamics; for
1587        this, the tracer ID iTracer had to be included into the parameter list
1588        of ptracers_forcing
1589      - set up forward_step to call gchem_forcing, that will replace
1590        gchem_forcing_int in ptracers_forcing
1591      - cleaning up
1592  o small cleaning of exch2: remove files that are also in eesupp/src  o small cleaning of exch2: remove files that are also in eesupp/src
1593    
1594  checkpoint56  checkpoint56

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