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revision 1.193 by edhill, Thu Oct 23 04:41:40 2003 UTC revision 1.888 by mlosch, Fri Oct 5 10:54:31 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  untagged  o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
8    o add new diagnostics to seaice: advective, diffusive fluxes (only for
9      multidim-advection, for scheme 2 they are not filled) and transports,
10      thermodynamic growth rates
11    o change units of EmPmR (inside the code) from m/s to kg/m2/s (mass flux) but
12      leave input file unchanged. Affects results @ truncation level (cg2d match)
13      and update output of experiments: lab_sea(6), global_ocean.90x40x15(10),
14      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
15      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
16      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
17    
18    checkpoint59h
19    o pkg/exf:
20      - improve vectorization by moving if-statement out of loops in
21        exf_mapfields, exf_radiation
22      - exf_bulkformulae.F: introduce 2D fields and vectorize code
23    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
24    o testreport:
25      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
26        monitor & update offline_exf_seaice exp. output.
27      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
28    o pkg/seaice:
29      - bug fix in the evp solver: boundary conditions were affected be
30        masking of zMax/zMin (changes results)
31      - minor bug fix in boundary conditions in seaice_calc_strainrates
32        (changes results for no_slip)
33      - seaice_lsr.F: make interpolation of eta dependent on boundaries
34      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
35      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
36        stress formulation and no-slip boundary conditions
37    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
38      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
39    o pkg/seaice: a first HSALT time stepping equation has been checked in
40    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
41      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
42      without requiring DO-IF statements
43    o pkg/thsice:
44      use continuous power-law function for partition of energy between lateral
45      melting/freezing and thinning/thickening ; old code using step function
46      still available with #undef THSICE_FRACEN_POWERLAW
47      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
48    o testreport: change AD testing : check against results/output_adm.txt
49      using same scripts as for forward test.
50    
51    checkpoint59g
52    o adjoint testing: in preparation for changing testreport:
53      - output format: cost and grad written on separated lines
54      - ad output results in directory "results" (instead of "results_ad")
55    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
56    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
57    o pkg/ecco: allow user defined cost function contributions
58    o testreport:
59      Allow to choose (per experiment) the list of tested output variables
60       and the main variable (used to issue a pass/FAIL ) ;
61      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
62      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
63      Also modify printing of summary:
64       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
65       b) echo the list of tested variables in the individual summary.txt of
66          each experiment.
67    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
68      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
69      (but still depend on the tile decompostion of the domain).
70    o pkg/seaice: change a discretization detail to make the B-grid code
71      "more symmetric". This change is likely to remove all "ridges/leads" that
72      where quasi-aligned with the grid in B-grid solutions. It may also be
73      the solution to the stress coupling issues with the B-grid.
74    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
75      remove .cvsignore from input dir. (since testreport no longer run here).
76    o pkg/thsice:
77     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
78     - fix reshaping of sea-ice just after advection:
79       melt all the ice only if ice-volume is too small.
80     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
81       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
82     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
83    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
84      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
85    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
86      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
87      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
88      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
89      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
90      -> update output.txt
91    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
92     this affects truncation error: -> update output.txt of exp:
93      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
94      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
95    
96    checkpoint59f
97    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
98    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
99      a bounded range (in forward mode)
100    o pkg/ecco, ctrl, autodiff and mom_common:
101     internal parameter controls, completements of implementations
102    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
103    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
104      (not seem any difference in testing results).
105    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
106       at face corners.
107    o pkg/generic_advdiff:
108     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
109      loop range indices for computing vertical advection tendency
110      and do the calculation in the interior only (no overlap) ;
111      for now, only implemented for SOM advection (to save CPU time).
112     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
113    o exch2 adjoint
114      First set of changes:
115      - add exch2 hand-written adjoint templates
116      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
117        This will require cleanup in pkg/autodiff/*.F
118        (changed routines currently kept separate in verif. code/)
119      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
120        that used to hide exch2 or cubed-sphere specific code
121        (commented via 'cph-exch2')
122    o pkg/seaice
123      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
124    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
125       output of global_ocean.cs32x15.thsice .
126    
127    checkpoint59e
128    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
129      for B-grid vector (not yet tested) and C-grid vector (<- only used
130      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
131    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
132      (#ifdef ALLOW_SALT_PLUME)
133    o gather_2d/scatter_2d: removed halo regions
134    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
135      scheme and the corresponding test case (under front_relax dir). For now,
136      only available with Skew-flux form and not yet tested in realistic set-up.
137      adjoint: store directives updated, but gradient checks deteriorated,
138      so maybe GM/Redi adjoint is now broken.
139    o seaice adjoint
140      * add AREA, HEFF, HSNOW as control variable
141        (should not change lab_sea results)
142      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
143    o pkg/seaice:
144      * added computation of saltFlux in seaice_growth;
145        For time being, sea ice salinity is assumed constant
146        contribution of snow flooding to freshening of sea ice is neglected.
147        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
148        defaults to 0.0 in order to maintain backward compatibility.
149        Typical values for SEAICE_salinity are 4 to 10 g/kg.
150      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
151      * added SEAICE_availHeatFrac, which specifies fraction of surface level
152        heat content used to melt or grow ice
153      * commented out cap of HICE: it helps keep ice thinner
154      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
155      * applied OBCS T/S mask to HEFFM sea ice mask
156    
157    checkpoint59d
158    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
159     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
160     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
161    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
162     and change default value of parameter "GM_Small_Number";
163     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
164       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
165       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
166    o pkg/ecco: cost function when applying pkg/smooth to controls
167    o pkg/ctrl: add forcingPrecond run time parameter
168    o pkg/seaice:
169     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
170     - fix bug in metric terms of u-equation in LSR solver (implicit part),
171       changes verification/lab_sea
172     - rearrange implicit part of u-equation in LSR solver to make it easier to
173       read, understand, and debug. This causes changes at the truncation level.
174     - fix (serious) bug in the boundary conditions (sign error in the implicit
175       part) of the LSR solver. Changes all LSR results.
176     - fixed problem with HSNOW initialization to avoid thick snow when AREA
177       is initilized with small values - does not change lab_sea results.
178     - added HsnowFile initialization capability
179    o pkg/smooth: addition to model/src and pkg/ctrl so allow
180     initialization of pkg/smooth and application to control vector
181    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
182    o dependencies: pkg/profiles requires pkg/cal
183    o pkg/profiles:
184     - added option ALLOW_PROFILES_GENERICGRID
185         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
186         that interpolation information (grid points and coefficients) is provided
187         within the netcdf input files.
188         -> sample matlab scripts can be found in MITgcm_contrib/gael
189         that allow you to prepare netcdf input files.
190     - also modified: cleaner include statements, cleaner error print statements,
191       cleaner stops when error, and more tests of the netcdf input files consistency.
192    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
193    o pkg/seaice:
194     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
195       requires a new routine: seaice_diagnostics_fill.F
196     - make sure that seaice does not move if not forced (pressure replacement
197       method, Hibler and Ip, 1995), changes results
198     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
199     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
200       It is turned off by default (=-1.), because it changes the results.
201     - make it possible to read AREA from a file, too.
202    
203    checkpoint59c
204    o add S/R and diagnostics for oceanic mixed-layer depth
205    o move GMRedi call after all vertical mixing schemes (including KPP)
206    o pkg/thsice:
207     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
208      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
209    o pkg/obcs:
210     - bug fix for balance code
211    o pkg/seaice:
212      - allow values of SEAICE_elasticParm > 1
213      - add new parameter SEAICE_evpTauRelax as an alternative
214        to SEAICE_elasticParm
215      - make lsr boundary conditions free slip (by default), changes result
216      - add code for no slip boundary conditions for lsr
217      - set minimum of zeta to zero (and not 4e8) (changes results)
218      - add a cap on AREA after advecting AREA if seaice_growth is not called
219    o change calculation of Visbeck K:
220      - no longer depend on tapering scheme; instead, compute slope (limited
221        by GM_maxSlope). this is equivalent to what was comuted before with
222        clipping or linear tappering.
223      - fix vertical averaging (wrong by 1/2 level)
224      - leave the old version (but will not be maintained) within
225        #ifdef OLD_VISBECK_CALC / #endif
226      - update output of exp. ideal_2D_oce
227    o change error catch in calc_r_star to improve vectorization
228    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
229      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
230    o adjoint:
231      Re-organized adjoint checkpointing according to Matt Mazloff
232      (but with modifs/completions/cleanups)
233      Storing is now bundled into large arrays to optimized I/O
234      (and second step in cleanup of the_main_loop)
235    
236    checkpoint59b
237    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
238      - export/import (between ocean & coupler) fields needed for ocean DIC.
239    o pkg/seaice:
240      - get rid of three more exchanges seaice_calc_viscosities (required
241        different loop boundaries in seaice_lsr and seaice_ocean_stress)
242      - bug fix in seaice_ocean_stress (update of lab_sea required)
243      - reduce loop boundaries to necessary minimum also in seaice_evp
244      - go back to the old way of computing deltaC/Z as the adjoint likes that
245        better
246    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
247      passive tracer to an Age Tracer) + update output.txt
248    o pkg/exf:
249      - implement A-grid / C-grid selection for wind-stress input files.
250      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
251      for now, in exf_bulk_largeyeager04.F only :
252      - change implementation for case where windspeed + 2. components wind-stress
253        are read-in. AND use rhoConstFresh to convert evap.
254    o pkg/seaice:
255      - use correct EXCH_UV for wind-forcing (on A-grid).
256      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
257        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
258    o pkg/exf:
259      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
260      EXF_INTERPOLATION:
261      - merge global_with_exf/code version of exf_interp_read.F
262        to the main code ;
263      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
264        reading the file ; Important: This options needs to be defined to recover
265        previous code.
266        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
267      - no longer loose real*8 precision along the way when using exf_iprec=64.
268    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
269      - change discretisation of evp-solver in order to avoid another exchange
270        (changes lab_sea) and clean up a little
271      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
272        help the adjoint (this also changes the results slightly)
273      - add a few "_d 0" where they had been missing in seaice_evp.F
274      - cleaning up: remove unused seaice_calc_rhs.F
275    o pkg/exf: some cleaning-up:
276      - change various "constants" into runtime parameters
277      - cleaned-up Large&Yeager04 routine which should eventually
278        replace exf_bulkformulae.F (changed names of S/R and CPP)
279        and merged various ALLOW_ATM_WIND options
280     only used with thsice pkg (in thsice_get_exf.F):
281      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
282        which are used when useStabilityFct_overIce=TRUE (= the default)
283      - change default values of ice & snow emissivity and scale downward LW
284        by ice & snow emissivity.
285    o pkg/thsice:
286     fix few little problems, in thsice_calc_thickn.F:
287      - growth vertically (and not laterally) if iceFrac == iceMaskMax
288      - melt only laterally if hIce < hThinIce (as the comments say)
289      and in thsice_extend.F:
290      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
291      - start to form ice as soon as the minimum ice-volume is reachable.
292     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
293      and cpl_aim+ocn
294    o pkg/kpp
295     - move computation of surface related input fields to KPP into a new
296       subroutine kpp_forcing_surf.F
297     - remove wrong (within bi,bj loops) EXCH calls.
298     - little cleaning (add argument myThid in last position, cvs header ...)
299     - for now, fix conservation problem by exchanging KPPviscAz (may not
300       be the best fix)
301    o pkg/seaice
302     - check for inconsistent evp parameter/cpp-flag combination
303     - remove leftover errIO flat for obsolete name list error handling
304    o OpenAD
305     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
306    
307    checkpoint59a
308    o pkg/seaice: some parameter clarifications and a little bit of clean up
309    o pkg/thsice: rename run-time parameters:
310       himin       -> hIceMin
311       himin0      -> hThinIce
312       hihig       -> hThickIce
313       i0          -> i0swFrac
314       transCoef   -> bMeltCoef
315       frac_energy -> fracMelting
316      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
317       with default values (for now) that do not change the results.
318      remove old version of thsice vars advection in pkg/seaice.
319    o in FFIELDS.h:
320      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
321      - make pLoad & sIceLoad always available (but still only used if
322         ATMOSPHERIC_LOADING is #define).
323    o pkg/kpp: replaced _KPP_RL with _RL
324    o bug fixes for vertical diffusivity computations when both KPP and
325        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
326        are no longer updating the vertical diffusivity array
327        (passed as argument) but are (re-) setting those arrays.
328    o pkg/seaice: fix bug in evp solver, while doing that
329      - change (improve?) discretization of stress computations for both
330        cgrid-lsr and evp solver
331      - add a new routine to compute strain rates
332      - the above changes lab_sea results
333      - add no slip conditions for evp solver (off by default), lsr-version
334        may follow
335      - fix exchange for shear at Z-points (does not change lab_sea)
336      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
337        (to force the user to pick a time step since there is not "safe" way
338        of choosing it)
339      - add principal stress diagnostics
340      - rearrange fields for evp a little to avoid having to call a: too many
341        exchanges and b: exchanges for stress trensor components which we do
342        not have.
343      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
344        of evp, complete rewrite for lsr case (latter is does not yet work
345        in all cases)
346    o pkg/kpp: add code to have mixing in shelf ice caverns
347      - add myThid to all kpp routines (long overdue)
348    
349    checkpoint59
350    o pkg/exf:
351      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
352        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
353      - move exf header files from lower_case.h to UPPER_CASE.h ;
354        add missing cvs Header & Name
355      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
356      - add namelist param. selectStressGridPosition, exf_monFreq
357      - retire many _CLIM routines, and remove data.exf_clim
358        + params moved to data.exf
359        + climsst, climsss now handled by exf_set_gen, i.e.
360          climss?period=0 refers to constant field,
361          climss?period=-12 to monthly forcing
362      - split up namelists in data.exf
363    o pkg/seaice:
364      - remove seaice_exch and seaice_exch_uv
365      - remove superfluous exchange of theta
366      - add myThid to seaice_budget_ocean/ice
367      - add new interface for atmospheric wind forcing (C-grid only)
368        + new routine
369        + two new field (taux, tauy for stress over ice)
370        + removed one global field (DAIRN) for C-grid case only
371    o pkg/thsise
372      - 2nd set of modifs for thsice adjoint in conjunction with exf
373    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
374    
375    checkpoint58y_post
376    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
377      vertical diffusivity, similar to that in MOM4; turned on using
378      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
379      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
380    o Added capability for 3D specification of background vertical diffusion
381      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
382      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
383      "data" file that contains the 3D vertical diffusivity coefficients.
384    o ice dynamics (pkg/seaice) with thsice thermodynamics:
385      - add code within pkg thsice to advect & diffuse sea-ice fields
386      similar to (and will replace) what has been added in  seaice_advdiff.F,
387      but: - conserving Mass, Heat & Salt.
388           - better when using non-linear advection scheme (not yet fully tested)
389           - can also be used in atmospheric set-up (for now, only the diffusion).
390    
391    checkpoint58x_post
392    o IO option for global-file compact format:
393      - add options when generating topology (utils/exch2/matlab-topology-generator)
394      - add I/O capability (pkg/mdsio).
395      - adapt utils/matlab/rdmds.m to read this format.
396      for now long-line format not yet supported by pkg/mdsio (& exch2).
397    o shelfice: add a few diagnostics
398    
399    checkpoint58w_post
400    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
401      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
402      (and replace horiVertRatio in NH code).
403      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
404                         and tutorial_plume_on_slope (sensitive to truncation)
405    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
406      directly to drive seaice model (C-grid only)
407    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
408     - reintroduce computation of wind from stress,
409     - compute tau (in exf_bulkformulae.F) from windstress averaged to
410       mass points to avoid tau = 0
411     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
412    o rdmnc.m: make it work with "global" files created with gluemnc
413    o rdmnc.m : some improvements in dealing with singleton dimension
414      (tested on all testreport mnc output files).
415    o genmake2: disable pkg/profiles if netcdf test fails.
416    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
417    o move call to cal_readparms up to make calendar parameters/variable available
418      to all packages
419    
420    checkpoint58v_post
421    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
422      useDynP_inEos_Zc tested.
423    o pkg/exf: changes to properly interpolate/mask/scale initial fields
424    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
425      and portions thereof.  See read_cs.txt for description and examples.
426    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
427      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
428      following the great-circle arc between those 2 points.
429    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
430      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
431    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
432     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
433     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
434     - still needs work (not working with some options ; efficiency to improve)
435       and serious testing.
436     - use this scheme for temperature & salinity in 2 advection test exp.:
437       advect_xy & advect_xz, respectively.
438    
439    checkpoint58u_post
440    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
441    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
442    o testreport: add option "-skipdir" to skip some test.
443    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
444      momentum calculation.
445    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
446    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
447      remove checkpoint.F and the_correction_step.F (no longer used);
448      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
449    o add option (linFSConserveTr) to correct for tracer source/sink due to
450      Linear Free surface
451    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
452    o pkg/thsice: fix reading mnc-pickups
453    
454    checkpoint58t_post
455    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
456    o pkg/mdsio:
457     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
458       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
459       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
460     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
461     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
462       either MDS_READ_FIELD or MDS_WRITE_FIELD )
463     - new S/R (to replace MDSWRITEMETA), which allows to write more
464       informations (variable names, time ...) to meta files.
465     - modify rdmds.m to give back the meta file content.
466    o pkg/diagnostics: change vertical interpolation to be safer, and more
467       flexible (define p-levels to interpolate to in data.diagnostics);
468      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
469       diagnostic pointer.
470    o pkg/seaice: more cleaning up of seaice_growth, added many comments
471    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
472    o fix multi-category seaice:
473     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
474       SEAICE_MULTICATEGORY
475     - fix short wave heat flux
476    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
477       and allow to use EVP solver. Change forward lab_sea: test both EVP
478       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
479    o Initial check-in of lab_sea adjoint
480      (very similar to natl_box_adjoint/code_seaice)
481      * used C-grid and EVP solver
482      * used KPP, GM/Redi
483      * uses inAdExact=.TRUE.
484      * gradient checks fail for both ADM and TLM
485        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
486        f.d. gradients actually seem more problematic than ADM, TLM gradients;
487        issue is related to forward mismatch between g77 an ifort
488    o pkg/seaice: overhaul of thermodynamics
489     - growth.F and groatb.F are replaced by new routine seaice_growth.F
490     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
491     - move a few global fields out of SEAICE.h into seaice_growth.F and
492       make them 2D (FICE/QNETO/ ...)
493     - remove FO (it is the same as QNETO)
494     - introduce a few local fields to avoid modifying external fields such
495       as atemp, etc.
496    
497    checkpoint58s_post
498    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
499      changed exf_set_gen.F so that
500        genperiod=0 means input file is one time-constant field and
501        genperiod=-12 means input file contains 12 monthly means
502    o CG2D: use pre-computed solver main-diagonal (stored in common block);
503      this affects truncation error ; generate new output file for exp. which
504      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
505        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
506        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
507        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
508        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
509        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
510    o start implementation of deep-atmosphere and anelastic formulation
511    o verification: remove 2nd copy of input files and use script "prepare_run"
512      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
513    o mom_common/vecinv/fluxform: fix a few initialisation isssues
514    o profiles: fix for multithreaded case
515    
516    o diagnostics: rename few diags:
517      s/'PRESSURE'/'RCENTER '/g
518      s/'TICE    '/'oceFreez'/g
519      s/'TAUX    '/'oceTAUX '/g
520      s/'TAUY    '/'oceTAUY '/g
521      s/'SWFLUX  '/'oceQsw  '/g
522      s/DIFx/DFxE/g
523      s/DIFy/DFyE/g
524      and add few ocean-forcing diagnostics:
525      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
526    o modifications to pkg/seaice/growth.F and budget.F, which change results of
527      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
528      as actual snow thickness.  It now refers everywhere to effective snow
529      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
530    
531    checkpoint58r_post
532    o modifications to pkg/seaice/growth.F, which change results of
533      lab_sea experiment: fixes pertain to melting snow over open water, to
534      masking EVAP under sea ice, and to using the correct AREA variable for
535      computations of EVAP, PRECIP, HSNOW, and GHEFF
536    o add ability to read bathy, salt, and theta using MNC (off by def)
537    o add flooding algorithm and advection of HSNOW for pkg/seaice;
538      both are turned off by default and do no change any results
539    o seaice advection with pkg/thsice: a step toward the use of non-linear
540      advection scheme, but #ifdef or commented out for now (requires more EXCH).
541    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
542      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
543      in natl_box (affects results @ truncation level: update output.txt)
544    o multi-threading and IO:
545      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
546      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
547        (needed to work with SingleCpuIO): tested in all verif. exp.
548    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
549      affects the results (but none of the verification test uses this scheme).
550    o Adding some pkg/diagnostics capability to pkg/seaice
551      (will certainly be subject to changes)
552    o ctrl: adding new control variables:
553      lwflux, lwdown, evap, snowprecip, apressure, runoff
554    
555    checkpoint58q_post
556    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
557      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
558      high_res_cube configuration by 4% on Columbia.
559    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
560      add (in global_with_exf/code) a version of EXF_INTERP_READ without
561      dynamical allocation (seems to work in multi-threaded).
562    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
563      single CPU io) so that TAF does not have to see EESUPPORT.h
564    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
565    
566    checkpoint58p_post
567    o obcs: stop if obcs is used with useCDscheme = .true.
568    o shelfice:
569     - fix a sign error so that no slip at shelfice interface works
570     - remove stop for combination non-hydrostatic code and shelfice. That does
571       not mean, that the results are correct, but at least they are numerically
572       stable
573    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
574    o added adjoint exch routined for all exch*3d* routines
575      and updated flow directives
576    
577    checkpoint58o_post
578    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
579      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
580    o change controling S/R for writing pickup file (new S/R do_write_pickup)
581      and clean-up reading/writing of pickup files.
582    o fix local version of read/write pickup (NH part) in rotating_tank/code
583    o simplify EXCH interface:
584     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
585     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
586    o added the regrid package
587    o shelfice:
588     - add a simple boundary layer scheme to reduce noise
589     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
590    
591    checkpoint58n_post
592    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
593       local variable (not in common block).
594    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
595      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
596      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
597        to work with SingleCpuIO.
598    o add "_d 0" to real constant of pkg/cfc subroutines ;
599       update exp. cfc_exemple & tutorial_cfc_offline output files.
600    o multi-threading and IO:
601      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
602        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
603      - barrier before and after reading.
604      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
605      - avoid using MDS_WRITELOCAL for LAND pkg output.
606      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
607        common-block variables ; Allows multi-threading with master-thread IO.
608    o change default MAX_NO_THREADS from 32 to 4 ;
609      and stop cleanly when MAX_NO_THREADS is too small.
610    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
611    
612    checkpoint58m_post
613    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
614       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
615    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
616       keep global_ocean.90x40x15 (for AD testing) with former secondary test
617       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
618    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
619        add MITgcm_tutorials (= code + all the tutorials)
620    o ecco, option to compute cost for total ssh (mean+anom)
621    o consistent with addition of ptracer and ssh in pkg/profiles
622    o profiles: adding ptracer and ssh
623    o testreport: change multi-test output-file name
624      (from output.txt.{name} to output.{name}.txt)
625    o profiles: now ok for mutli-tiles case
626    o seaice: add 4 parameters for different advection schemes for area,
627      (effective) seaice thickness, enthalphy, and snow height. Their default
628      is the standard parameter SEAICEadvScheme
629    o calc_gw:
630     - add cosFacU in zonal viscous flux (harmonic.visc.).
631     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
632       of tutorial_plume_on_slope.
633    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
634    o calc_gw: true flux-form, account for horizontal grid spacing.
635      update rotating_tank results, but not plume_on_slope (affected at
636      truncation level, 11 digits).
637    
638    checkpoint58l_post
639    o calc_gw:
640     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
641     - remove side-drag for now (need to fix it); update plume_on_slope results.
642     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
643    o commit code to make SST/SSS weights spatially variable
644      (based on either variable in-situ or variable initial T/S weights)
645    o pkg/ecco:
646      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
647        now based on horizontally varying weights wthetaLev, wsaltLev
648      * cost_averagesflags now returns year indices in addition to day, month
649      * sflux balance is performed on annual basis
650        (sflxumm, sfluxmm2, bal_sfluxmm)
651      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
652        including separate counting and multipliers
653    o pkg/rbcs
654      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
655    
656    checkpoint58k_post
657    o testreport:
658     - always build in dir. "build" (if not there, mkdir build instead of building
659       & running in input)
660     - run in dir run (if it exists), in build otherwise.
661     - call prepare_run (if input/prepare_run exists)
662     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
663    o pkg/exf modifications to interpolation and rotation routines for more
664       reasonable treatment of North Pole singularity: for tracers North Pole
665       value is set to northernmost zonal-mean value, for zonal velocity it is
666       set to zero, and for meridional velocity it is set to northernmost value.
667    o pkg/exf/exf_check_range.F
668     - add tile index to diagnostics and move stop statement to the very
669       end of the routine.
670    o pkg/diagnostics: (diagnostics_main_init.F)
671      define title of isomorphic variables according to the current config.
672    o pkg/thsice with pkg/seaice dynamics:
673    - fix domain of computation (interior only, required for exf) and do exchanges
674    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
675    o towards a standard way of dealing with multi-threading in MONITOR
676      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
677    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
678       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
679    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
680    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
681    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
682       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
683    o tracer advection:
684     - clean-up and simplify calc_common_factors.F
685     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
686       advection subroutine (but still not used within DST advection S/R)
687    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
688    
689    checkpoint58j_post
690    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
691      from file (collects calls previously in FORWARD_STEP)
692    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
693    o adjoint store dir. adjusted accordingly
694    o genmake2
695      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
696    
697    checkpoint58i_post
698    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
699      on wind stress (SEAICEstressFactor defaults to 1.)
700    o Total number of Timers is finite (<=40): comment out 2 non-essential one
701      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
702    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
703      on CS-grid: no longer loosing mass.
704    o exf & curvilinear-grid: no longer modify longitude xC & xG.
705    o pkg/ggl90: fix sloppy output and fix a bug
706    o pkg/seaice: added SEAICEuseEVPpickup parameter
707      - Set to false in order to start EVP solver with
708        non-EVP pickup files when using SEAICEuseEVP
709      - fix sign error in diffusion in seaice_calc_rhs
710    
711    checkpoint58h_post
712    * Modifications for bottom topography control
713      o replace hFacC by _hFacC at various places
714      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
715      o add non-self-adjoint cg2d_nsa
716      o update autodiff support routines
717      o re-initialise hfac after ctrl_depth_ini
718      o works for 5x5 box, doesnt work for global_ocean.90x40x15
719    * Adding verification for 5x5 box (4-layer) bottom topography control
720    
721    checkpoint58g_post
722    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
723       used for mean seasonal cycle, mean diurnal cycle); add an example
724       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
725    o pkg/ggl90:
726      - add parameter (minimum surface kinetic energy)
727      - fix bug (avoiding division by zero)
728    o couple pkg/thsice to pkg/seaice:
729      - modify advection in seaice to accomodate new scalar fields to be advected
730      - only muliDimAdection scheme work with seaice/thsice
731      - mapping of thsice-variables to seaice-variables, back and forth
732      - does not break the verification experiments, but does not give the
733        desired results either
734    o pkg/seaice
735      - make (default) second order advection a bit less confusing?
736    
737    checkpoint58f_post
738    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
739      to pkg/seaice):
740      - new routines thsice_map_exf and thsice_get_exf provide the interface
741      - add an additional formal parameter to thsice_solve4temp
742    o pkg/exf:
743      - add new fields wspeed, snowprecip (to be able to couple to thsice)
744      - correct Stefan-Boltzmann constant
745      - new parameter for longwave surface emittance
746      - separate some stuff from exf_bulkformulae into new routines  
747        exf_radiation, exf_wind
748      - add new parameters and constants: longwave emissivity for ocean, ice
749        and snow, evaporation parameters over ice
750      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
751        either wind from stress or stress from wind
752    o pkg/thSIce:
753    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
754    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
755       and THSICE_CALC_THICKN
756    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
757    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
758      to make debugging easier.
759    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
760    o pkg/bulk_force:
761      - clean-up comments and parameters ;
762      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
763    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
764      generate new output for test-experiment: aim.5l_cs.thSI
765    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
766      testreport accordingly
767    
768    checkpoint58e_post
769    o SEAICE_CGRID adjoint done
770    o R_STAR adjoint implemented.
771      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
772      * need to sort out init. of h0facc, etc.
773    o Make pkg/profile fully independent of ecco,cost, etc. stuff
774      to be able to use it in pure forward.
775    
776    checkpoint58d_post
777    o upgrade simple test-experiment to tutorial example:
778     step.1: duplicate the experiment and (step.2) will remove the old copy.
779      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
780      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
781      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
782      tutorial_global_oce_biogeo    <- copy of dic_example
783      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
784      tutorial_plume_on_slope       <- copy of plume_on_slope
785      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
786      tutorial_global_oce_optim     <- empty for now (David ?)
787      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
788     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
789    o correct a sign problem in cost_scat.F
790    o obcs and ptracers: fix boundary conditions for advections schemes
791      with larger stencil
792    o thsice adjoint: start
793    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
794      completeness
795    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
796      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
797    o ptracers adjoint:
798      * avoid extensive recomputatations
799      * fix missing re-init. of gptr (missed by TAF)
800    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
801      me to turn off the excessive output to STDOUT that this package produces
802    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
803      and add those terms in Vector-Invariant formulation.
804    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
805      if the control period (xx_hfluxperiod etc) is 0
806    o in profiles pkg, clean routines and fix details
807    o in ecco pkg, reading ssh data:
808      fix problem in case the model does not start at iter0=0
809    o fix mnc-pickup/restart for ptracers
810    o new package prifiles:
811      code to compute profile-based cost by Gael Forget
812      (modifs in ecco, ctrl, autodiff)
813    o Benign bug fix in initialization (spotted by M. Mazloff) of
814      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
815    
816    checkpoint58c_post
817    o adjoint: finish NLFS adjoint and provide reference output in
818      verification/global_ocean.90x40x15/results_ad_nlfs
819    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
820      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
821      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
822      with SEAICE_CGRID defined.
823    o move calendarDumps from "data" to "data.cal" and clean-up the code
824      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
825    o add useEXF & useCAL flags (for now, set in hard-coded way)
826    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
827      (were missing in NH mode, and wrong in quasihydrostatic mode).
828      waiting for Chris updated version of calc_gw to add those CALLs.
829    o fix bug in quasihydrostatic S/R ;
830      add a test for this option: global_ocean.90x40x15.qshyd
831    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
832      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
833    o add on/off flag useOffLine for package OFFLINE
834    o seaice:
835      - modify advection so that it works also on the C-grid
836      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
837        problem in multi-tile runs with C-grid
838      - add flags for clipping ice velocities and/or masking solver forcing
839      - fix drag (ocean on ice) formulation and a bug that caused noise in the
840        C-grid solver
841      - added a few comments to seaice_diffusion.F
842      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
843        are now exclusive)
844      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
845        required re-ordering the code a little:
846       + make DAIRN global variable (defined in SEAICE)
847       + move computation of the viscosities eta and zeta into a new separate
848         routine (because I need to recompute them in seaice_ocean_stress.F)
849    
850    checkpoint58b_post
851    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
852      update output.txt of exp. aim.5l_cs.thSI
853    o various mnc cleanups and improvements:
854      + shrink lookup tables by factor of ~4
855      + better error reporting when running out of lookup space
856      + able to handle longer path/file names (up to 500 chars)
857    o adjoint:
858      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
859      - TBD: "hidden" mom_vecinv recomp. in dynamics
860    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
861     (allow to differentiate between forcing components using new integer flags:
862      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
863     and add new flag to put Dissipation tendency out of Adams-Bashforth.
864    o ecco
865      - enable trend removal from SSH anomaly obs.
866    o adjoint
867      - a fix for PmEpR when #undef EXACT_CONSERV
868      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
869      - try to fix "hidden" recomp. in forward_step for NLFS
870        (NLFS seems broken sometimes after I checked it in)
871    o seaice:
872     - add c-grid version of the dynamic solver:
873       + three new routines that are the c-grid substitute lsr, dynsolver
874         and ostres
875       + put a few fields that were local to dynsolver into global common
876         blocks, so that I can move the computation of stresses etc into
877         seaice_lsr (saves coding but may break the adjoint).
878     - replace more hardwired parameters by runtime parameters
879     - add ice masks that mask the rhs of the implicit solvers where there
880       is no ice (commented out in seaice_dynsolver, because i am not sure
881       if this works properly), eventually this should replace the clipping
882       of ice velocities in seaice_dynsolver to +/-40cm/s.
883    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
884      include it only where its needed
885    o move balancing of fluxes before the call of external_forcing_surf
886    o seaice:
887      - correct units of turning angles (now they are really in degrees)
888      - move computation of GWATX/Y out of main routine into dynsolver
889      - initialize GWATX/Y in seaice_init
890    o Apply mask on Fresh-Water flux (needed for SSH forcing).
891      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
892    o seaice: add runtime flags for turning angles (default to zero)
893    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
894      and trend from exf forcing and ctrl control adjustments
895    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
896      (since checkpoint57x_post)
897    o change the default rotation period to 86164.s = the Earth rotation
898    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
899      and based on a reference stratification. Tested within hs94.cs-32x32x5.
900    o seaice advection: add code for choosing between the default (2nd order
901      central differences) and multiDim advection schemes provided by
902      pkg/generic_advdiff
903    o seaice:
904      - removed all references to SEAICE_GRID.h fields from
905        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
906        (cubed-sphere configuration will change a little)
907      - grid computations in seaice_init are obsolete now.
908      - cleaned up code a little so that is easier to read (hopefully).
909      - added new (better?) discretizations of default advection and diffusion
910        (turn on with SEAICEuseFluxForm)
911      - replace 1 in 3d global fields by kSurface in growth.F
912      
913    checkpoint58a_post
914    o seaice:
915      - bug fix in advect.F
916    o shelfice:
917      - separate shelfice load anomaly from pload (breaks with time
918        dependent forcing), => introduce constant field shelficeLoadAnomaly.
919        Its default is 0., but it may be computed more cleverly from (unknown)
920        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
921        done offline. A good approximation of the pressure load anomaly is
922        necessary to avoid large initial adjustment processes underneath
923        deep-reaching shelfice.
924      - small fix in ISOMIP shelfice_thermodynamics
925      - add more sophisticated thermodynamics of Hellmer (1989), this is
926        now the default
927      - give a few constants more intuitive names
928    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
929      if bulk formulae are used in long integration (especially EmPmR). Turn
930      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
931      if balancePrintMean, the imbalance that is substracted is printed to
932      STDOUT.
933    o fix bug (typo) in obcs_apply_eta.F
934    o add a new package shelfice which enables us to model the circulation
935      underneath shelf-ice with draughts of hundreds of meters.
936     - works
937     - to do: + include improved thermodynamics
938              + check whether kSurfC (from model/inc/SURFACE.h) can be used
939                instead of new field kTopC
940              + can we use topoFile, Ro_surf and existing code in ini_depth.F
941                instead of new field R_shelfIce and new code in ini_depth.F
942                and ini_mask_etc.F?
943              + adjust vertical mixing schemes?
944    o seaice pkg:
945     - add a cpp-flag to include a simple formula for a salinity dependent
946       freezing point of sea water at the surface
947     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
948       meridional stresses are now different (and hopefully correct)
949    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
950       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
951       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
952    o pkg/diagnostics: add options and parameters for regional-statistics
953       diagnostics ; define regions by reading a region-mask from a file
954       (might add other options later)
955    o pkg/bulk_force:
956     - add option and parameters to use AIM surface-flux formulae.
957     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
958       others forcing fields (defined in PARM05, parameter file "data") are loaded
959       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
960     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
961     - use the right EXCH call for uwind,vwind (to work on CS-grid).
962     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
963       and parameters (note: calcWindStress replaces .NOT.readwindstress).
964     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
965    
966    checkpoint58
967    o add "--embed-source" option to genmake2 which, when the supporting
968      tools can be compiled (as determined by genmake2) will turn on the
969      embed_files package which then embeds the entire MITgcm source code
970      (*.[fFhc] + Makefile) used for the build within the executable
971      - requested by CNH but off by default
972      - adds a paltry <9MB to the mitgcmuv executable in most cases
973      - only writes the output when useEMBEDSRC in eedata is true
974    o clean up 3-dim. relaxation codes:
975      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
976      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
977      * Thanks to Tom Haine for testing!
978    
979    checkpoint57z_post
980    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
981      affects output (@ truncation level) of exp. plume_on_slope ; updated.
982    o fix the pickup behavior for obcs in combination with ptracers
983    o fix a bug in ptracers_external_fields_load
984    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
985      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
986    o transfered surface NH pressure to eta field (if exactConserv).
987    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
988         and update lab_sea output.txt file.
989    o completing 3-dim. relaxation code: additional term
990         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
991      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
992      * At compile time, in "EXF_OPTIONS.h" set
993          #define  ALLOW_CLIMTEMP_RELAXATION
994          #define  ALLOW_CLIMSALT_RELAXATION
995      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
996          tauThetaClimRelax3Dim = 15552000.0,
997          tauSaltClimRelax3Dim  = 15552000.0,
998      * 3 cases:
999          1) Use a constant-in-time 3-dim. field
1000          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1001          3) Real-time relax. to time-evolving prescribed field
1002    o Adding Laplacian-type smoothness constraint on
1003      initial and boundary (forcing) controls (ic, bc)
1004      * enable at compile-time via
1005        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1006      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1007      * Absolute scale somewhat unclear so far
1008      * no area weighting was included since no other cost term does so far
1009    
1010    checkpoint57y_post
1011    First step for a NLFS adjoint
1012    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1013    o new init. routines for calc_r_star, calc_surf_dr
1014    o still need to deal with ini_masks_etc
1015    o testreport seemed happy
1016    checkpoint57y_pre
1017    
1018    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1019    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1020    o add new offset feature to offline pkg (plus minor cleanup)
1021    o cfc fixes for final year of integration
1022    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1023      be in GCHEM_OPTIONS).
1024    
1025    checkpoint57x_post
1026    o fix testreport Pb in multiple test experiment.
1027    o cleanup our namelist syntax in verification:
1028      - make it more F95 standards compliant (some work still needed)
1029      - allows the vast majority of our tests to work with gfortran
1030    o Non-Hydrostatic:
1031     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1032     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1033    o Allow to apply AB on T,S rather than on AB(gT,gS):
1034     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1035     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1036       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1037     - need a "clever" read_pickup to restart from the other AB formulation
1038    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1039    o remove some unused variables (reduces number of compiler warnings)
1040    o adjoint
1041      * Disable useVariableViscosity for adjoint for time being
1042        (there are a number of extensive recomputations)
1043      * Initialize certain variables needed for adjoint
1044    
1045    checkpoint57w_post
1046    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1047                 fix the singleCpuIO RS version of MDSWRITEFIELD
1048       and add a WARNING if using globalFiles=T with multi-processors.
1049    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1050      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1051    o tracer advection scheme:
1052      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1053       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1054       was not very convenient).
1055      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1056       (further tests needed for the implicit DST & Flux-Limiter schemes).
1057    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1058      and sRef for convenience, handy, when you want to initialize
1059      ptracers in a large domain with a constant non-zero value. Also,
1060      untangle ptracers_init.F a little.
1061    
1062    checkpoint57v_post
1063    o change dome exp. to use variable viscosity in side-drag terms.
1064    o remove all the files from the cfc_offline test since they are now
1065      incorporated into tutorial_cfc_offline which has been producing
1066      identical results for a few days of testing
1067    o add new parameter: sideDragFactor to enable half-slip-side BC
1068      and change side-drag S/R to use viscosity from mom_calc_visc
1069      (can switch back by setting sideDragFactor=0.); affects results at
1070      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1071       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1072    o vorticity & strain are now computed without masking, to account for
1073      no-slip-side BC in variable viscosity calculation ; mask is applied
1074      anyway later on, before computing advection/coriolis terms.
1075    o modify exp4 to test new obcs support for reading from external files
1076      and for passive tracers
1077    o fix behavior of ptracers_monitor when monitor output is written to a
1078      netcdf-file; still not independent of monitor.F (writes in the same
1079      file).
1080    o change default value of tRef (put a uniform, meaningful value for ocean
1081      & atmos) and initialize sRef (was missing, as Martin mentioned).
1082    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1083      to be proportional to enstrophy dissipation length.  Thus,
1084       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1085      This is now consistent with Smagorinsky and with the manual.
1086    
1087    checkpoint57u_post
1088    o OBCS and PTRACERS: add open boundary support for passive tracers
1089      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1090        OB-values from file; this is not different from the way theta and salinity
1091        are treated
1092      - however, Orlanski-radiation conditions are not supported, and the model
1093        will stop if you use pTracers and Orlanski at the same time.
1094      - beefed up the rountine obcs_external_fields_load: now only those open
1095        boundary values are overwritten with values from files for which there
1096        are really files, otherwise the OB-fields remain untouched. This makes
1097        it possible to use different OBs at different ends of the domain (as
1098        with EXF)
1099    o reduce number of exch calls in shap_filt (s2).
1100    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1101      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1102    
1103    checkpoint57t_post
1104    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1105    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1106      same truncation, independent of the face number: affects affects several
1107      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1108    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1109      note that biharmonic viscosity + no-slip was not tested in any experiment.
1110    o fix bug in non-linear free-surf side-drag ; generate new output for
1111      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1112    o make mnc honor the writeBinaryPrec flag for most kinds of output
1113    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1114    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1115      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1116    o add brackets in multi-terms sum to get same truncation, independent of
1117      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1118      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1119    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1120      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1121      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1122      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1123      Suggested values of viscosity parameters found in mom_calc_visc.
1124      Many new viscosity diagnostics available.
1125    
1126    checkpoint57s_post
1127    o Add clearing-house for viscosity calculations, mom_calc_visc and
1128      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1129      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1130      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1131      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1132      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1133      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1134      ViscAhStrain and viscAhTension are now retired.
1135    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1136    o In response to JMC's bug report, genmake2 now ignores any soft-links
1137      that it finds in the *current* directory when searching for files.
1138      Soft-links found in any other source directories will still work as
1139      they did before.
1140    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1141      a C routine to unlimit the stack size
1142    o mnc-ify pkg/aim snapshot vars
1143    o mnc-ify pkg/land as requested by Daniel
1144    o various changes to mnc including:
1145      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1146      - output can now be grouped so that all files within a group
1147          change the ITER portion of their names in lock-step together
1148      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1149          and works with both EXCH1 and EXCH2 (but needs more testing)
1150      - writing works for all verification test cases w/ g77 on Linux
1151    
1152    checkpoint57r_post
1153    o make MNC variable initialization happen earlier
1154    o add diagnostics for (almost) each term of the momentum Eq.
1155    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1156    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1157    o remove MINIMAL_TAVE_OUTPUT option ;
1158      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1159    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1160      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1161    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1162    o add time-dependent SST, SSS control
1163    o cost terms in ecco/ modularized (new cost_generic.F)
1164    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1165    o new infrastructure for seaice model vs. obs misfits in seaice/
1166      * driver from the_main_loop.F is seaice_cost_driver.F
1167      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1168      * gradient check in Exp. 6a of natl_box_adjoint/
1169    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1170      (see README file)
1171    
1172    checkpoint57q_post
1173    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1174    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1175      - bug was reported by Jean-Michel and Ian Fenty
1176    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1177      update exp. cpl_aim+ocn output.
1178    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1179      Needed for high-res. runs with large global files
1180      to be able to limit tapelev size
1181    o Changed some tests for adjoint:
1182      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1183      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1184      * global_ocean.90x40x15/ back to default 3-level checkpointing
1185    o Modifications to enable scripted COMMON to MODULE conversion
1186      * verification/OpenAD/code/ has necessary scripts and description;
1187      * converts, compiles and runs successfully;
1188    
1189    checkpoint57p_post
1190    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1191    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1192      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1193    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1194    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1195      (was already the case for dissipation with mom_vecinv,
1196       and also the case for grad.PhiHyd when staggered-timeStep)
1197      This will allow to put dissipation out-off the AB time-stepping.
1198     Unfortunately, affects truncation error. Update output of exp. that "fails"
1199      (cg2d matching number) and leave the others for later: front_relax(10),
1200      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1201      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1202    
1203    checkpoint57o_post
1204    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1205      (2) its ready to be documented during the 20050801 DocFest
1206    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1207      for ideal_2D_oce and lab_sea on linux_ia32_g77
1208    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1209      in global1x1_tot/code_seaice_adj to access indices 32, 33
1210      (worth another tag)
1211    
1212    checkpoint57n_post
1213    o adding precip control xx_precip 32
1214    o adding swflux control xx_swflux 33
1215    o Replacing 10 forcing penalty cost routines by 1 generic.
1216    o Implementing partitioning in time-mean and variable adjustment
1217      for atmos. state.
1218    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1219    o in natl_box_adjoint:
1220      * updated exp 1 to 10
1221        (but does not have time-mean vs. variable split results yet)
1222    o updated global1x1/*_seaice_adj/
1223      to incorporate latest changes
1224    o enable useSingleCpuIO for mdsio vector routines
1225      (applies in particular to tapelev I/O)
1226    o removed inefficient K-loop in all active_file*control*.F
1227    
1228    checkpoint57m_post
1229    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1230      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1231    o pkg/exch2: filling of face-corner halo regions is optional
1232      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1233    
1234    checkpoint57l_post
1235     tag before updating tutorials (pre-release-2)
1236    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1237       for output and interpolation of input fields onto model grid)
1238    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1239       Affects results of exp. rotating_tank ; update output.txt.
1240    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1241          and taking the square quantity and/or using a fraction-weight field.
1242    o fix aim_diagnostics_init.F mate numbers.
1243    o add mnc output capability to diagnostics/diagstat and update
1244      our cvsignore files for the ACSII output generated
1245    
1246    checkpoint57k_post
1247    o lab_sea now uses diagnostics package and provides a suite of
1248      new EXF diagnostics output.
1249    
1250    checkpoint57j_post
1251    o exf
1252      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1253        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1254        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1255      * extended diagnostics output
1256        - now includes all EXF variables
1257        - hs, hl moved to common block
1258        - separate S/R for diagnostics, called after ctrl vector is added
1259        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1260        - EXFqnet contains true Qnet (i.e. includes qsw)
1261      * updated verif. lab_sea, global_with_exf
1262      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1263        to ensure that diagnostics sees a true EXFqnet
1264    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1265    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1266      several times with different frequencies.
1267    o mnc-ify the thsice package as requested by Daniel Enderton
1268      - the monitor--MNC output needs work
1269      - many attributes need to be added (most are currently blank)
1270    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1271      - many attributes need to be added (most are currently blank)
1272    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1273    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1274    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1275      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1276         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1277    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1278     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1279    
1280    checkpoint57i_post
1281    o Diagnostics package was changed: diagnostic allocation is now deactivated
1282      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1283    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1284      add 1rst Order upwind vertical Shear.
1285    o add a quick fix for A/B checkpointing in OFFLINE mode
1286    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1287      end-run around the C/Fortran linking horror in eesup/src/timers.F
1288    o added pkg/runclock: allows user to terminate run based on wall clock
1289    o added non-hydrostatic scaling parameter: nh_am2
1290    o pkg/my82: futile attempt to make results compiler-independent by adding
1291      some "_d 0", etc. no effect.
1292    o for mnc output, fill the 'T' coordinate var with myTime and create a
1293      separate 'iter' variable for iteration count
1294    o pkg/diagnostics:
1295      add new capability: output of Global/Regional & per-level statistics ;
1296      tested against monitor output (including land & thSIce) on various exp.
1297    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1298    
1299    checkpoint57h_done
1300      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1301      data.diagnostics, data.gchem, data.ptracers) is done.
1302    
1303    o pkg/diagnostics: prepare for Global/Regional statistics.
1304      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1305    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1306      and rename it: DIFFERENT_MULTIPLE
1307    
1308    checkpoint57h_post
1309    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1310    o pkg/diagnostics: change output frequency, now in seconds (instead
1311      of Nb of iterations). This requires to change data.diagnostics.
1312    checkpoint57h_pre
1313    
1314    o in mnc, let the user create the output dir if both mnc_outdir_date
1315      and mnc_outdir_num are false
1316    o add fflags() to pkg/diagnostics which allows one to specify, on a
1317      per-file basis, the file precision [default behavior is unchanged]
1318    o added diagnostics to pkg/kpp, including computation of mixed layer
1319      depth based on a temperature/density criterion
1320    o updated verification/natl_box to test the new pkg/kpp diagnostics
1321    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1322    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1323    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1324      not mnc -- this mistake was found by JMC and is now corrected
1325    
1326    checkpoint57g_post
1327    o add Adams-Bashforth 3rd Order time stepping:
1328      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1329      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1330    checkpoint57g_pre
1331    
1332    o make lambda[Theta,Salt]ClimRelax spatially varying
1333      (default remains spatially uniform constant based on tau)
1334    o added new control variables
1335      * init. uVel, vVel, etanN
1336      * lambda[Theta,Salt]ClimRelax
1337    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1338      (suggested by G. Forget)
1339    
1340    checkpoint57f_post
1341    o add parameter "baseTime" = model base time = time at iteration zero
1342      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1343      account for baseTime shift
1344    o move Coriolis arrays from PARAMS.h to GRID.h
1345    checkpoint57f_pre
1346    
1347    o mnc-ifying the seaice package
1348    o introduced an alternative length scale calculation for use in the limiting
1349      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1350    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1351    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1352      as well as grad(vort3).  Made it compatible with both approximate form
1353      for the cubed sphere and full form of these gradients.  Added flag
1354      useFullLeith to select between approximate and full form.  
1355    o add "d0" in getcon.F to reduce differences between compilers/platforms
1356      update output.txt of exp. fizhi-gridalt-hs
1357    o change port_rand funtion to allow to set the seed.
1358    o fix obscure MNC bug involving conversion between reals and integers
1359      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1360        new version is now more standards-compliant
1361    o adjoint-related modifications
1362      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1363      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1364      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1365    
1366    checkpoint57e_post
1367    o Adding eddy stress controls a la Ferreira et al.
1368    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1369    
1370    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1371      update output.txt of exp. fizhi-gridalt-hs
1372    o add more "Z" dimensions and associated coordinate vars to MNC
1373    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1374    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1375      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1376      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1377      months and years.  Requires pkg/cal.
1378    o diagnostics: add pickup functionality
1379      - off by default for backwards compatibility
1380      - current version only uses MDSIO -- MNC will be added
1381    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1382    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1383    
1384    checkpoint57d_post
1385    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1386    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1387      output from the diagnostics package
1388    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1389    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1390      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1391    o add coordinate variables to the MNC output from the diagnostics package
1392    o change MNC-flags default value: true when useMNC=TRUE
1393    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1394      the ability (off by default) to read the grid information using MNC
1395    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1396    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1397    o do snap-shot diagnostics at the middle of the time-interval (instead of
1398      at the end).
1399    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1400      new test for AIM with thSIce + slab-ocean
1401    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1402    o move state variable diagnostics to the beginning of the time step ;
1403      (note: still needs some work specially for snap-shot diagnostics)
1404      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1405    
1406    checkpoint57c_post
1407    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1408    o generate new output.txt files on faulks with g77 & the new -ieee option
1409    checkpoint57c_pre
1410    
1411    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1412      update output.txt of exp. global_ocean.90x40x15
1413    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1414      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1415    o add saltFlux(+File) forcing capability with periodicExternalForcing
1416    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1417    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1418    o improvements for the MNC output from DIAGNOSTICS:
1419      - correct handling of the unlimitied dimension
1420      - all dims now have associated coordinate variables
1421      - variables located at U, V, and Corner ("Z") points are now written
1422        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1423        *all* data points are output
1424    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1425    o added pkg/seaice/seaice_monitor.F
1426    o mdsio_readfield.F can now read files visible only to master MPI process.
1427    o pkg/seaice: some test code for ice-modified ocean stress
1428    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1429      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1430      spurious negative numbers for precipitation and humidity.  Will cause
1431      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1432    o pkg/ctrl/
1433      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1434        May be enabled via doPackDiag
1435      *  introduce z-scaling of
1436         + gradient (doZscalePack) and
1437         + control (doZscaleUnpack)
1438    o pkg/mdsio/
1439      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1440      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1441    
1442    checkpoint57b_post
1443    o simplify options in diagnostics_fill arguments (remove weird combinations)
1444    o fix MNC coordinate variables so that they now contain per-face index
1445      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1446      general, EXCH2 grids are only aligned to a "local" coordinate system
1447    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1448    o Implement instantaneous output within pkg diagnostics:
1449      setting a negative frequency in data.diagnostics produces
1450     "snap-shot" output (as opposed to time-average if freq > 0)
1451    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1452      NOTE: change ptracer diagnostics name: use 2 characters to work with
1453            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1454    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1455      becomes the coordinate variable for the 'T' dimension
1456    o add CF-style coordinate variables to MNC
1457      - just a first cut:  numbers are meaningless on the cubesphere and
1458        missing along the T axis but otherwise it works!
1459    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1460    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1461    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1462      this is based directly on what the model compute, so that the content of
1463      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1464    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1465    o clean up build options files for SunOS, in particular
1466      - remove -traditional from xmakedepend
1467      - change -xarch=v9 to -xarch=native for f77
1468      - restore use of make (not gmake)
1469      - add CC=gcc if using g77
1470    o changes per discussion of AM, JMC, & EH3 today:
1471      - move redundant "grid" variables out of "state" -- in preparation of
1472        creating proper CF-style coordinate variables and in recognition
1473        that any/all grid variables can be easily copied (eg. w/NCO) from
1474        the grid files into any of the other NetCDF files
1475      - *always* output grid variables with MDSIO (this will eventually be
1476        changed)
1477      - output MNC grid file if useMNC is true
1478    o every instance of _END_MASTER() has been found and replaced with
1479      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1480      preprocessors
1481    o re-arrange diagnostics pkg initialisation:
1482     - allow each package to extend the available diagnostics list
1483     - add some checking and fix small problems (multi-threaded, ...)
1484     - new S/R diagnostics_fill (replace fill_diagnostics):
1485       look through the short list of active diag. (instead of the long list)
1486       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1487    
1488    checkpoint57a_post
1489    o this set of changes restores TAMC compatibility
1490      tested for global_ocean.90x40x15 adjoint on trough
1491      (what a pain)
1492    
1493    checkpoint57a_pre
1494    o some modifs in tools/build_options for sunos
1495    o call ctrl_pack for ctrl at end for optimcycle=0
1496    
1497    checkpoint57
1498    o add horizontal bi-harmonic viscosity for vertical velocity
1499      - new parameter viscA4W (defaults to viscA4)
1500      - affects only non-hydrostatic code
1501      - to be done: no-slip lateral boundary conditions
1502    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1503    o implement Implicit Vertical advection for pTracers
1504    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1505      (implemented also for implicit vertical diffusion & advection)
1506    o OBCS: extend application of tracer open boundary conditions
1507      to a strip beyond the boundary of width Olx/Oly
1508    o add call monitor to TAF set of required calls (flow directives)
1509      and include in natl_box_adjoint
1510    o untangle a few ifdefs related to cost, ctrl, autodiff
1511      untangel a few ALLOW_ECCO_OPTIMIZATION
1512    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1513      (theta2, salt2 in ecco_cost_weights)
1514    
1515    checkpoint56c_post
1516    o OBCS as control variables
1517      - update ctrl_ad_diff.list, obcs_ad_diff.list
1518      - remove balance of obcs controls from default
1519      - fix index bug nobcs in ctrl_init
1520      - fix dummy fields filen in ctrl_pack
1521      - add dummy weights for obcs
1522    o lsopt: comment out fort.94 output
1523    o optim:
1524      - remove unnecessary header files
1525      - adjusted namelists
1526      - add xerbla.F to Makefile
1527    o exf:
1528      - multiple modifications of exf_check_range
1529      - unit change in exf_init_runoff from [m/year] to [m/s]
1530    o mdsio:
1531      - i/o-vector change debugLevel from debLevA to debLevB
1532    
1533    checkpoint56b_post
1534    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1535      is called from DO_THE_MODEL_IO
1536      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1537      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1538      - clean up PTRACERS_WRITE_TIMEAVE a little
1539    o add another verification experiment that tests both the cfc-pkg and
1540      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1541      reactive tendencies treated inline with regular timestepping
1542    o testreport previously did a lousy job of comparing small numbers, so
1543      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1544      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1545      testreport.
1546    o ptracers_monitor: bug fix for MPI
1547    
1548    checkpoint56a_post
1549    o GCHEM: finish reorganizating the package
1550      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1551        (introduces another 3D-array for each passive tracer, but only if
1552        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1553        gchemTendency is not needed because the timestep is done separately)
1554      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1555      - GCHEM is now---more or less cleanly---separate from PTRACERS
1556      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1557        so clear to me how that should be done in a general way.
1558    o CFC: improve formatting of output in CFC_ATMOS
1559    o PTRACERS:
1560      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1561        that ALL experiments with ptracers enable can be checked. This makes
1562        GCHEM_MONITOR obsolete.
1563      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1564        monitorFreq
1565      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1566    o add PTRACERS (PTR0[1-5]) to testreport output
1567    o exf_check_range:
1568      * default changed to .TRUE.
1569      * will check values for niter0 if debLevA, every timestep if debLevB
1570      * STOP in exf_check_range if 'out of range'
1571      * range chosen generous to allow for potential extema
1572      TBD: a version with stricter range
1573           permitted range would be runtime parameters
1574    o GMredi:
1575      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1576      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1577      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1578    o GCHEM:
1579      - move call to GCHEM_FORCING_SEP, so that it is now called before
1580        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1581      - introduced a useGCHEM runtime flag and applied it everywhere.
1582      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1583        this flag is now only visible within GCHEM-pkg routines.
1584      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1585        be replaced by a 3D array that is computed before thermodynamics; for
1586        this, the tracer ID iTracer had to be included into the parameter list
1587        of ptracers_forcing
1588      - set up forward_step to call gchem_forcing, that will replace
1589        gchem_forcing_int in ptracers_forcing
1590      - cleaning up
1591    o small cleaning of exch2: remove files that are also in eesupp/src
1592    
1593    checkpoint56
1594    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1595    o mnc: cleanup "full" files--fixes out-of-memory problem
1596    o ECCO-GODAE
1597      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1598      * fully merged and updated from SIO code
1599        windstress sign change affects
1600        - exf_inscal_[u/v]stress
1601        - sign of xx_tau[u/v] adjustments
1602        - signs in cost_scat
1603      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1604      * natl_box_adjoint updated and compressed
1605      * 2-level checkpoint switch added
1606        (tested in EXP. 1 of natl_box_adjoint)
1607      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1608    o SVD
1609      * first complete, non-hacked version for SVD calculations
1610      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1611        performed via direct access files admtlm_vector.it????
1612        (via ctrl_[un]pack)
1613      * optimcycle is used for ARPACK iteration counter
1614        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1615      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1616        and add linear transforms where necessary
1617      * controls are initial/final SST, SSS (can be extended; need to check
1618        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1619    o mdsio: filename info to both stderr, stdout
1620    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1621      from sign change
1622    
1623    checkpoint55j_post
1624    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1625      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1626    o add consistent build directories and .cvsignore files to verification
1627    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1628    o make all subroutines 30 or less characters in length for certain older
1629      compilers to work (a thorough search only turns up two routines in
1630      pkg/ptracers)
1631    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1632      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1633    
1634    checkpoint55i_post
1635    o change arrays for total vertical diffusivity (2.D if explicit,
1636      3.D if implicit) ; each ptracer uses its own background value.
1637    o added mnc/NetCDF output capability to ocn_compon_interf
1638      - added bits to verification/cpl_aim+ocn so that it can run on
1639        ITRDA and other clusters without the mpirun "-wd" option
1640    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1641      configuration
1642    o give MNC the ability to create additional files rather than
1643      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1644      - the default is just less than 2GB which is a practical limit
1645        on many systems
1646    o Compute the non-local term using either KPP vertical diffusivity (=default)
1647       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1648    
1649    checkpoint55h_post
1650    o add verification test "vermix"
1651    o remove all the *_ioinc flags and replace with the single global
1652      outputTypesInclusive flag
1653    o allow to set a vertical profile of vertical diffusivity for T & S
1654    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1655    o useMNC moved from data.mnc to data.pkg
1656    
1657    checkpoint55g_post
1658    o Renaming carbon AD experiments to comply with testreport conventions
1659    o Updating adjoint of Held-Suarez hs94.1x64x5
1660    o Fixing directives for non-ECCO forward_step, after ECCO directives
1661      have been fixed to avoid recomp. of do_oceanic_phys
1662      Works well for global_ocean.90x40x15,
1663      but recomp. issue remains for carbon
1664    o Updating adjoint output for natl_box_adjoint after
1665      pkg/ecco has been modified (see taga c55d_post)
1666    
1667    checkpoint55f_post
1668    o rename to timeave_init_fixed
1669    
1670    checkpoint55e_post
1671    o some delicate re-shuffle of store directives to avoid one
1672      extra call of do_oceanic_physics
1673      affects ecco_the_main_loop.F, do_oceanic_physics.F
1674      checkpoint_lev1_directives.h
1675    o NB: this may break global_ocean adjoint temporarily,
1676      but it is clear how to fix it. Will do later, need this now.
1677    
1678    checkpoint55d_post
1679    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1680    o ecco_cost_weights is modified to 1x1 runs
1681    o modifs to allow observations to be read in as
1682      single file or yearly files
1683    o enable to read exf forcing fields as either
1684      single file or yearly files (flag useExfYearlyFields)
1685    checkpoint55d_pre
1686    
1687    o switch between 2-level and 3-level checkpointing
1688    o add ability of MNC to write local and "partial" (eg. 2D slices where
1689      the full 3D field is never actually stored) arrays to NetCDF files
1690      with the correct (that is, the complete multi-dimensional) set of
1691      array indicies
1692      - used in mom_vecinv() to write the diagFreq output
1693      - tested (demonstrated) in verification/aim.5l_cs
1694    o further mnc-ification
1695      - add verification/lab_sea to the list with mnc setups
1696      - fix undefined mnc v-names in cd_code
1697      - add kpp to mnc output (both snapshot and timeave)
1698    o non-hydrostatic code
1699      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1700        in calc_gw.F
1701      - defaults to viscAh
1702      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1703        friction or Leith) in non-hydrostatic mode, as long as there is
1704        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1705    o pkg/cost
1706      extend simple cost functions to treat time mean quantities
1707      (T,U,V) via cost_accumulate_state from cost_tile
1708    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1709        be 2 times larger than the minimum size the advection scheme requires.
1710        now get a perfect conservation of salt in advect_cs test-exp (updated)
1711    o GGL90 (Gaspar's TKE mixed layer)
1712      - add horizontal diffusion of TKE, requires exchanges in
1713        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1714        default. In OPA there is no horizontal diffusion of TKE but the
1715        mixing coefficients are computed from a horizontal average of TKE of
1716        6 points or so. I think that diffusion has a little more physical
1717        justification.
1718      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1719        was in vain)
1720      - mask tke-variable in ggl90_init
1721    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1722    o fix biharmonic diffusion on CS-grid.
1723    o more obcs stuff
1724      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1725        for reading boundary values. This routine is called from
1726        obcs_prescribe_read
1727      - updated obcs_check
1728      - changed sponge layer relaxation parameter units for days to seconds
1729      - turned off sponge layer by default
1730      - changed argument list of OBCS_CALC to myTime+deltaTclock
1731      - fixed about 35 bugs in obcs_external_fields_load
1732    
1733    checkpoint55c_post
1734    o obcs stuff
1735      - new runtime flags useOBCSprescribe, useOBCSbalance
1736      - re-arranged obcs_calc
1737      - moved exf_getobcs to obcs_prescibe_read
1738        obcs_prescibe_read is called after ORLANSKI stuff
1739        and independent of it (executable can contain all).
1740      - updated obcs_check
1741      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1742        These may be necessary only if tangential velocities are
1743        prescribed at OB, not sure, needs testing.
1744    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1745      which simplifies the calls and passes the ifc check-bounds test
1746    
1747    checkpoint55b_post
1748    o add a 2D scalar, Z location, exchange_2 routine.
1749    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1750      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1751      affects advect_cs results (for the wrong reason): update output.txt
1752    o use a more standard discretization for biharmonic viscosity ;
1753     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1754      affects results of dome set-up: update output.txt
1755    o fix gad_advection.F (CubedSphere part), back to version 1.23
1756    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1757    
1758    checkpoint55a_post
1759    o merged code to
1760      * prescribe/read time-dependent open boundaries
1761        (works in conjunction with exf, cal)
1762      * sponge layer code for open boundaries
1763      * each boundary N/S/E/W now has its own CPP option
1764        (healthy for the adjoint)
1765    
1766    checkpoint55
1767    o up-to-date adjoint of previous breaks
1768      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1769      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1770      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1771      - carbon: * remove tr1-related adjoint verification
1772                * add ptracer as control variable
1773    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1774      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1775    
1776    checkpoint54f_post
1777    o in verification/carbin/ remove experiment related to
1778      ALLOW_PASSIVE_TRACER (array tr1 etc)
1779      code_ad/ input_ad/ results_ad
1780    
1781    o add two new packages
1782      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1783        + subject to optimization (memory)
1784      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1785        + subject to reordering (many GOTOs in the original code)
1786        + so far opps is called for every (i,j) point, and then operates in
1787          the vertical; one may want to reorder the scheme in order operate in
1788          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1789          fields)
1790    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1791      - all verification tests compile and run with linux_ia32_g77
1792      - defaults are compatible with current input files--nothing
1793        should change if you were not previously using MNC
1794      - MNC output has been added in numerous places (eg. timeave)
1795        but there are still a few writes not yet do-able with MNC
1796        (this is in progress)
1797      - flags now allow for either/or/both use of MDSIO and MNC and
1798        documentation will soon follow
1799      - numerous small formatting cleanups for ProTeX
1800    o add version info (via BUILD_INFO.h) to MNC and stdout
1801    
1802    checkpoint54e_post
1803    o add two new packages
1804      - pp81 (Packanowski and Philander, 1981), Richardson number and
1805        stratification dependent mixing
1806      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1807      - these scheme operate in a similar manner as KPP (without ghat, of
1808        course), however there is only one diffusivity that is used for both
1809        temperature and salinity (and passive tracers)ç
1810    o add offline package
1811    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1812      provided by Stephanie Dutkiewicz
1813    o genmake2: add ability to search for C compilers and cleanup test output
1814      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1815    
1816    checkpoint54d_post
1817    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1818    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1819      leading to additional shift by 5 days each year of integration
1820       (i.e. leading to considerable offset over the years)
1821    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1822    o start with no AB and no initial filtering (staggerTimeStep):
1823      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1824    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1825      (external loading & cpl import/export stay in forward_step.F)
1826    o update coupling interface to work with new staggerTimeStep
1827    o change MDSIO ptracers_pickup.
1828    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1829    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1830    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1831    
1832    checkpoint54c_post
1833    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1834      this affects (truncation error) output.txt of test-exp:
1835       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1836    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1837    o change Qnet to always be the net heat flux, (+upward).
1838      affects (truncation error) output of natl_box exp.: updated
1839    o define the max number of passive tracers in PTRACERS_SIZE.h
1840    o start to test mnc routinely in exp0
1841    o add sea-ice loading (sIceLoad) as a new forcing field.
1842    
1843    checkpoint54b_post
1844    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1845       impressive on Altix and Opteron systems)
1846    o diagnostics can now write NetCDF files through the mnc package
1847    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1848    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1849    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1850      affects (truncation error) output of lab_sea & natl_box exp.: updated
1851    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1852    
1853    checkpoint54a_post
1854    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1855    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1856    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1857    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1858      + internal_wave (shift in writing cg2d_ini_res)
1859    checkpoint54a_pre
1860    
1861    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1862      - modified verification/lab_sea and natl_box_adjoint accordingly
1863    
1864    checkpoint54
1865    checkpoint53g_post
1866    o prepare splitting of thermodynamics: store convect.counter in common block
1867    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1868      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1869    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1870    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1871    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1872    o restore adjointability
1873    
1874    checkpoint53f_post
1875    o modifications that affect AIM experiment results (update output.txt):
1876      - no advection of S at top interface Nr (pkg/generic_advdiff)
1877      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1878    o AIM pkg:
1879      - include stability function into surf.Flux derivative relative to Tsurf
1880      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1881    
1882    checkpoint53e_post
1883    o merged cylindrical coord configuration
1884    o added rotating_tank experiment
1885    checkpoint53e_pre
1886    
1887    checkpoint53d_post
1888    o faulks upgraded: re-generate output.txt that have changed:
1889       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1890    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1891    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1892    o added Sadourny discretization of Coriolis
1893      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1894      - re-enabled use of omega3 (useAbsVorticity)
1895    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1896      vector-invariant equations
1897      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1898    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1899      hopefully without new bugs
1900      - still to do: biharmonic friction for non-hydrostatic w
1901    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1902    o regenerated output for global_ocean_ebm (using -ieee)
1903    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1904      of mom_common/
1905      - simple re-arrangement of instructions within computing loop
1906    checkpoint53d_pre
1907    
1908    checkpoint53c_post
1909    o new version of coupler for AIM+thSIce and Ocean models
1910     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1911     - land: change Evaporation of snow
1912     - aim with thSIce: fix bug in snow-precip.
1913    o changes to calc_gw.F
1914     - bug fix for w^2 term near the bottom boundary
1915     - (hopefully) improve the lateral slip boundary condtions for use with
1916        partial/looped cells
1917      - because the bug fix changes two verification experiments anyway (exp5
1918        and plume on slope), change the lateral boundary condition from half slip
1919        to the value of no_slip_sides
1920    o ebm package wasnt quite up to the parallel task. Fixed that.
1921    o Adjoint of EBM package + verification
1922      * TLM OK
1923      * ADM not sufficient accuracy yet (needs further testing)
1924    
1925    checkpoint53b_post
1926    o Commiting new energy balance model to repository
1927      * package is pkg/ebm
1928      * verif. is verification/global_ocean_ebm
1929      * references are in ebm_driver.F
1930    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1931    C        Global thermohaline circulation. Part I:
1932    C        Sensitivity to atmospheric moisture transport.
1933    C        J. Climate 12(1), 71-82
1934    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1935    C        Global thermohaline circulation. Part II:
1936    C        Sensitivity with interactive transport.
1937    C        J. Climate 12(1), 83-91
1938    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1939    C        Destabilization of the thermohaline circulation
1940    C        by atmospheric eddy transports.
1941    C        J. Climate 7(12), 1870-1882
1942    o Will need long integration testing.
1943    checkpoint53b_pre
1944    
1945    o created pkg/mom_common in preparation for variable viscosity code
1946    o renamed and split ini_mnc_io
1947    o pkg/land: only liquid water can diffuse or run-off
1948    o AIM using land: soil wetness availability account for snow
1949    o added printMapIncludesZeros to EEPARMS namelist
1950    
1951    checkpoint53a_post
1952    o restore TAMC compatiility for exf_constants.h
1953      (no usage of _d in .h)
1954    o Additional storing in KPP in an attempt to fix
1955      TAMC problem with adjoint of KPP code.
1956      (no success...)
1957      Identical code works fine with TAF.
1958    o Fixed verification/natl_box_adjoint experiments.
1959      Initial conditions for Experiments 4 and 5 are now
1960      set to "SEAICE_initialHEFF=0", which is more reasonable,
1961      and hence gives results closer to that of Experiment 2.
1962      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1963    
1964    checkpoint53
1965    o stable checkpoint with up to date adjoint
1966      TLM tests only run for 1st grdchk at the moment. Its unclear if
1967      this is a code problem or a problem with resetting code for g_
1968      variables that is being autogenerated wrong.
1969      Otherwise:
1970       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1971       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1972         are both still in chaos following their security messes.
1973    
1974    checkpoint52n_post
1975    o various build (mostly genmake2) changes including:
1976      - ability to build/run more easily within Cygwin and MacOS X
1977      - more complicated Makefiles with a stronger dependence on Gnu Make
1978    o pkg/seaice modifications
1979      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1980        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1981        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1982      - changed proxy for geostrophic velocity and updated
1983        verification/lab_sea/results/* accordingly
1984      - removed ADI dynamic solver from pkg/seaice
1985      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1986        they caused a segmentation fault under certain circumstances
1987      - removed unused field WATR
1988    o bug fix in exf-package:
1989      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1990         now reflect that.
1991    o small fixes in the cal-package:
1992      - set reference date to first of January for the 'model'-calendar
1993      - failing of cal_CheckDate in cal_FullDate now actually results in a
1994        warning
1995    o small modifications in exf-package to increase flexibility:
1996      - change climtempfreeze from a constant to a runtime parameter that
1997        is specified in data.exf_clim (default = -1.9)
1998      - introduce runtime parameter windstressmax (default = 2.0) that is
1999        specified in data.exf
2000    o fix in pkg/thsice:
2001      - update Evap (Tsf changes) to be consistent with Latent heat flux
2002      - maintain snow precipitation unchanged (even if Tsf >=0).
2003     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2004    
2005    checkpoint52m_post
2006    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2007      this does not change any of the results, because myIter=0 in swfrac always
2008      lead to jwtype=2 (the default anyway), but the call makes little sense
2009      as a default
2010    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2011    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2012      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2013    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2014    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2015    o extending useSingleCpuIO option to work with new exch2 I/O format
2016      - old-style, missing-tile I/O is still accessible by defining CPP
2017        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2018    o monitor package can write to NetCDF files and/or STDOUT
2019    o fix re-definition bug in MNC_GRID_INIT_ALL()
2020    o doc/api_reference added
2021      - a framework for building an API Reference Manual using all
2022        the "protex" comments embedded in the code
2023      - see pkg/generic_advdiff, pkg/mnc for examples
2024    o MNC:
2025      - make myThid the last argument for all subroutines
2026      - new default for the grid files: NO halos
2027      - add useMNC and other run-time flags
2028      - separate per-file-group handling of the unlimited dimension
2029      - early initialization of MNC w/ flags read at the eeboot stage
2030        and lookup tables set in initialize_fixed
2031      - write all MNC output to a freshly-created directory
2032    o thermodynamics sea-ice (thsice) is now tested with testreport.
2033    o test exp. advect_cs: use the standard cs32 grid ; update output.
2034    o Added functionality to grdchk:
2035      pick global i,j,k position (or nearest wet) where to perform check.
2036    
2037    checkpoint52l_post
2038    o new land formulation:
2039      a) use ground enthalpy as prognostic variable to ensure exact
2040         energy conservation.
2041      b) account for water temperature and for latent heat of freezing
2042         in all processes (rain, run-off, ground storage)
2043      c) compute surface and ground temperature implicitly.
2044    o aim_v23 modification for new land model:
2045      a) Treat separately land / ocean / sea-ice surface fluxes
2046         to allow implicit computation of land & sea-ice surface temp.
2047      b) add snow precipitation.
2048    checkpoint52l_pre
2049    
2050    o fix problem (when 1 tile is empty) in min/max monitor.
2051    o fix bug in timeAve (u,vZetatave in common block)
2052    o no restoring terms under ice for pkg/seaice
2053    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2054    o bug fix for pkg/seaice pickups
2055    o change MNC call locations and add coordinate attributes
2056    o mask vorticity at the corner ; affects global_ocean.cs output
2057    o fix ini_curvilinear_grid ; test CS experiments with mpi
2058    o aim.5l_cs: modify sea-ice fraction input file ; update output
2059    o exf: Adding simple range check routine for exf fields after read
2060    
2061    checkpoint52k_post
2062    o removed top-level directory "diags"
2063      - we migrated these functions to pkg/timeave a long time ago
2064    o fixed bug introduced in pkg/monitor
2065    o accuracy ctrlprec = 32 insuffient for gradient checks using
2066      averaged fields (I/O via cost_averages)
2067      -> use ctrl.h in active_file*.F to control I/O precision.
2068    o paramter list of CALL ADTHE_MAIN_LOOP
2069    o added initial do_the_model_io to ecco
2070    o set all ...Freq to zero after cost_final
2071      taveFreq, dumpFreq, pChkptFreq
2072    o MAIN and ECCO differentiability restored
2073    
2074    checkpoint52j_post
2075    o fix nchklev in tamc.h for global_ocean...
2076    o Bringing flow and store directives up-to-date
2077    o Really weird thing!
2078      call do_the_model_io from the_main_loop with parameters
2079      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2080      TAF places a faulty re-call of initialise_varia
2081      after cost_final call which should not be there!
2082    checkpoint52j_pre
2083    
2084    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2085      error messages
2086    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2087    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2088      debug output
2089    o modfied mdsio_writefield.F to handle non-global files under exch2
2090    o update AIM Cubed-Sphere exp (aim.5l_cs):
2091      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2092    o update AIM Equatorial Channel exp:
2093      use standard aim_v23 pkg and change the SST fields to be more realistic.
2094    o globalFile now works with exch2
2095    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2096      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2097    o limit timeave output for hi-res integrations
2098    
2099    checkpoint52i_post
2100    o removed CPP_EEOPTIONS.h from verification/*/code
2101    o updated the tiling for global_ocean_pressure
2102    checkpoint52i_pre
2103    
2104    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2105      the old pkg/aim).
2106    
2107    checkpoint52h_pre
2108    o shortened offending lines in exch2_send_rx?.template
2109    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2110    o genmake2: add build & execute test for NetCDF code
2111    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2112      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2113    o added useSingleCPUIO flag to monitor.F and mon_out.F
2114    o added temporary hack for sea-ice dynamics on the cube:
2115      metric terms are ignored and it is assumed that
2116      there is no sea-ice on cube faces 1, 2, 4, and 5.
2117    
2118    checkpoint52f_post
2119    o added exch2 cube routines to pkg/exch2
2120    o modified hs94.cs-32x32x5 to use it
2121    o added new grid files to hs94.cs-32x32x5
2122    checkpoint52f_pre
2123    
2124    checkpoint52e_post
2125    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2126      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2127    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2128      to work with implicit vertical advection and AB ;
2129    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2130    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2131     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2132    checkpoint52e_pre
2133    
2134    o fix bug in impldiff when Nr=1 or Nr=2.
2135    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2136    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2137    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2138      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2139    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2140    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2141    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2142    
2143    checkpoint52d_post
2144    o re-tiled many expts to allow comparison in multi-processor mode
2145      - updated output accordingly
2146      - changed hs94.128x64x5 to use intial T from file rather than use the
2147        random number generator
2148    o add infrastructure in model routines for fizhi and gridalt packages
2149    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2150    o changes to permit hi-res, cubed-sphere, configuration
2151      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2152      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2153      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2154        of surface winds for the cube
2155      (A verification experiment, based on global_ocean.cs32x15, but with
2156       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2157       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2158       complete with example surface forcing files and matlab scripts to look
2159       at the output and compare it with that of global_ocean.cs32x15.)
2160    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2161       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2162       to conform to the common rule.
2163    o check-in the first version of the coupler + interfaces for multi-components
2164       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2165       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2166       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2167       - ocean and atmos. share the same horizontal grid (no interpolation).
2168       - exchanges between component and coupler is done in forward_step
2169    o new verification experiment, cpl_aim+ocn:
2170       coupled ocean - AIM atmosphere on cs32 grid.
2171    
2172    checkpoint52d_pre
2173    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2174    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2175    
2176    checkpoint52c_post
2177    o Fixing OPTIONS files for use of exf:
2178      - ALLOW_ECCO not needed
2179      - ECCO_CPPOPTIONS.h should not be included from
2180        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2181        as has been the case in the past
2182      - All cal/exf related options are currently set in
2183        single header file. Should remain so until we
2184        agree on a consistent new policy.
2185    o Removed all CPP options for cal package.
2186      cal has no more CPP options.
2187    o modified STOREs in GAD_ADVECTION
2188    o corrected key comp. for passkey
2189    
2190    checkpoint52b_post
2191    o new version: "thsice" of thermodynamic sea-ice pkg:
2192     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2193     - modify fluxes but do not change theta directly;
2194     - light cleaning of bulk_force pkg (still needed with thsice).
2195     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2196       + output_thsice.txt to test thsice & bulk_force pkgs.
2197    o put back grid & coriolis monitor output.
2198    checkpoint52b_pre
2199    
2200    o call "do_the_model_io" at the beginning (=> dump initial state)
2201    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2202    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2203      (need info on NUMBER_OF_PTRACERS)
2204    o missing PTRACERS headers in some routines
2205    o default tamc.h in pkg/autodiff supposed to crash
2206      to ensure proper customization
2207    
2208    checkpoint52a_post
2209    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2210      - moved surfaceTendencyTice from pkg/seaice to main code
2211      - subroutine FREEZE_SURFACE now limits only surface temperature
2212        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2213        => new output.txt for global_ocean.cs32x15 & global_with_exf
2214      - keep the old version of FREEZE for backward compatibility;
2215        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2216      - corresponding modifs for TAF directives
2217    o added surface flux output variables to TIMEAVE_STATVARS
2218    o time-averaged output for pkg/ptracers
2219    o fix problem with ECCO-related divided adjoint
2220      snapshot file was missing some ad-variables,
2221      but no warning issued by TAF
2222    
2223    checkpoint52a_pre
2224    o some bug fixes for #undef REAL4_IS_SLOW
2225    
2226    checkpoint52 = ecco_c52_e35
2227    o after testing adjoints of checkpoint51u_post
2228    
2229    checkpoint51u_post
2230    o this is the post-merge tag of the ecco-branch
2231      (needs another clean checkout and re-testing)
2232    o various natl_box_adjoint configs and results
2233      but no input fields
2234    o obcs adjoint not yet merged!
2235    o adding ECCO global 1x1 and 2x2 degree configs
2236    o updated/extended some store directives for seaice
2237    o pkg/ecco now containes ecco-specific part of cost function
2238    o top level routines the_main_loop, forward_step
2239      supersede those in model/src/
2240      previous input data.cost now in data.ecco
2241      (new namelist ecco_cost_nml)
2242    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2243    
2244    checkpoint51t_post
2245    o this is the pre-merge tag of the ecco-branch
2246    
2247    checkpoint51s_post
2248    o cleanup: removed various obsolete #define-s
2249    o pkg/grdchk
2250      - renamed 'ph-grd 3' to 'grad-res'
2251      - merged from ecco-branch
2252        (remaining bug fixes for obcs gradient checks)
2253      - additional high-precision output for testreport
2254        (grep for 'precision_grdchk_result')
2255    
2256    checkpoint51r_post
2257    o cleaned up or removed CPP_OPTIONS.h files
2258    o updated results for some of the tests to reflect the new
2259      optfiles (-ieee: -O0 instead of -O3)
2260    
2261    checkpoint51q_post
2262    o cd_code:
2263      - moved cd_scheme.F -> cd_code_scheme.F
2264      - separate read_checkpoint from cd_code_ini_vars.F
2265      - separated cd_code part from write_checkpoint
2266      - updated AD_SOURCE, generated .flow
2267      - added CD_CODE_VARS.h to the_main_loop
2268      - Moving cd_code specific store dir.s to pkg/cd_code
2269    o ctrl package totally restructured
2270      - pack/unpack now optional and decoupled from
2271        xx_/adxx_ I/O
2272      - ctrl_pack/unpack cleaned
2273        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2274      - confined inclusion of AD_CONFIG.h to where necessary.
2275    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2276    
2277    checkpoint51p_post
2278    o create initial cd_code package
2279      - WARNING: the initialization of fields within packages
2280        is broken because INI_FIELDS (where READ_CHECKPOINT is
2281        called) is called *before* PACKAGES_INIT_VARIABLES.
2282        This seems to be backwards since
2283        1) its important to initially zero the entire field including
2284           the "halo" region
2285        2) zeroing needs to be done *before* reading pickup info
2286           and the pickup call might or might not happen in any
2287           particular run
2288      - this needs an overhaul for R2
2289    o cleanup verification/*/code/GMREDI_OPTIONS.h
2290    o cleanup testreport
2291    
2292    checkpoint51o_post
2293    o bringing AD-related verif's up to date with genmake2
2294      - carbon/
2295      - global_ocean.90x40x15/
2296      - hs.94.1x64x5/
2297      - (front_relax/ )
2298    o (more) consistent directory structure for AD-related verif.'s
2299    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2300    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2301    o bug fix in find_alpha.F for MDJWF:
2302      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2303        change rho -> rho-rhoConst
2304      - replace call find_rho to find_rhonum
2305    o initialisation of rFlx extended to full array (required by TAF)
2306      and shifted to thermodynamics
2307    o removed PTRACERS.h in ptracers routine
2308    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2309    o Correcting initialisations for fVerU, fVerV.
2310    o helping TAF to recognize dependency on kUp for
2311      fVerU, fVerV
2312    o Replacing delZ by delR in pkg/ctrl/
2313    checkpoint51o_pre
2314    
2315    o undid all of cp51 pending some cleanups and discussion
2316    o added the [#include "AD_CONFIG.h"] statement to all files that need
2317       it for adjoint/tl #defines
2318     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2319     o removed tools/genmake since it no longer works
2320    
2321    checkpoint51n_post
2322    o modifications to make FREEZE flux visible to pkg/kpp
2323      - moved surfaceTendencyTice from pkg/seaice to main code
2324      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2325      - subroutine FREEZE now limits only surface temperature
2326        (this means new output.txt for global_ocean.90x40x15,
2327         global_ocean.cs32x15, and global_with_exf)
2328    o added surface flux output variables to TIMEAVE_STATVARS
2329    
2330    checkpoint51n_pre
2331  o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F  o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2332  o added [#include "AD_CONFIG.h"] to all files that use the following  o added [#include "AD_CONFIG.h"] to all files that use the following
2333    defines:    defines:

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