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revision 1.2 by cnh, Sat May 30 02:19:49 1998 UTC revision 1.892 by jmc, Mon Oct 15 00:30:04 2007 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/monitor:
8      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
9      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
10      - account for deep Atmosphere factor and density factor (anelastic)
11    o added open boundary conditions capability for seaice HEFF and AREA
12    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
13      thermodynamics
14      - requires a little reorganization, which affects the testreport results
15        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
16        so that now the conservative form is tested
17      - add a few comments
18    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
19    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
20    o add new diagnostics to seaice: advective, diffusive fluxes (only for
21      multidim-advection, for scheme 2 they are not filled) and transports,
22      thermodynamic growth rates
23    o change units of EmPmR (inside the code) from m/s to kg/m2/s (mass flux) but
24      leave input file unchanged. Affects results @ truncation level (cg2d match)
25      and update output of experiments: lab_sea(6), global_ocean.90x40x15(10),
26      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
27      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
28      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
29    
30    checkpoint59h
31    o pkg/exf:
32      - improve vectorization by moving if-statement out of loops in
33        exf_mapfields, exf_radiation
34      - exf_bulkformulae.F: introduce 2D fields and vectorize code
35    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
36    o testreport:
37      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
38        monitor & update offline_exf_seaice exp. output.
39      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
40    o pkg/seaice:
41      - bug fix in the evp solver: boundary conditions were affected be
42        masking of zMax/zMin (changes results)
43      - minor bug fix in boundary conditions in seaice_calc_strainrates
44        (changes results for no_slip)
45      - seaice_lsr.F: make interpolation of eta dependent on boundaries
46      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
47      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
48        stress formulation and no-slip boundary conditions
49    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
50      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
51    o pkg/seaice: a first HSALT time stepping equation has been checked in
52    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
53      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
54      without requiring DO-IF statements
55    o pkg/thsice:
56      use continuous power-law function for partition of energy between lateral
57      melting/freezing and thinning/thickening ; old code using step function
58      still available with #undef THSICE_FRACEN_POWERLAW
59      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
60    o testreport: change AD testing : check against results/output_adm.txt
61      using same scripts as for forward test.
62    
63    checkpoint59g
64    o adjoint testing: in preparation for changing testreport:
65      - output format: cost and grad written on separated lines
66      - ad output results in directory "results" (instead of "results_ad")
67    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
68    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
69    o pkg/ecco: allow user defined cost function contributions
70    o testreport:
71      Allow to choose (per experiment) the list of tested output variables
72       and the main variable (used to issue a pass/FAIL ) ;
73      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
74      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
75      Also modify printing of summary:
76       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
77       b) echo the list of tested variables in the individual summary.txt of
78          each experiment.
79    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
80      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
81      (but still depend on the tile decompostion of the domain).
82    o pkg/seaice: change a discretization detail to make the B-grid code
83      "more symmetric". This change is likely to remove all "ridges/leads" that
84      where quasi-aligned with the grid in B-grid solutions. It may also be
85      the solution to the stress coupling issues with the B-grid.
86    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
87      remove .cvsignore from input dir. (since testreport no longer run here).
88    o pkg/thsice:
89     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
90     - fix reshaping of sea-ice just after advection:
91       melt all the ice only if ice-volume is too small.
92     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
93       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
94     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
95    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
96      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
97    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
98      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
99      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
100      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
101      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
102      -> update output.txt
103    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
104     this affects truncation error: -> update output.txt of exp:
105      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
106      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
107    
108    checkpoint59f
109    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
110    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
111      a bounded range (in forward mode)
112    o pkg/ecco, ctrl, autodiff and mom_common:
113     internal parameter controls, completements of implementations
114    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
115    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
116      (not seem any difference in testing results).
117    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
118       at face corners.
119    o pkg/generic_advdiff:
120     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
121      loop range indices for computing vertical advection tendency
122      and do the calculation in the interior only (no overlap) ;
123      for now, only implemented for SOM advection (to save CPU time).
124     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
125    o exch2 adjoint
126      First set of changes:
127      - add exch2 hand-written adjoint templates
128      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
129        This will require cleanup in pkg/autodiff/*.F
130        (changed routines currently kept separate in verif. code/)
131      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
132        that used to hide exch2 or cubed-sphere specific code
133        (commented via 'cph-exch2')
134    o pkg/seaice
135      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
136    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
137       output of global_ocean.cs32x15.thsice .
138    
139    checkpoint59e
140    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
141      for B-grid vector (not yet tested) and C-grid vector (<- only used
142      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
143    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
144      (#ifdef ALLOW_SALT_PLUME)
145    o gather_2d/scatter_2d: removed halo regions
146    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
147      scheme and the corresponding test case (under front_relax dir). For now,
148      only available with Skew-flux form and not yet tested in realistic set-up.
149      adjoint: store directives updated, but gradient checks deteriorated,
150      so maybe GM/Redi adjoint is now broken.
151    o seaice adjoint
152      * add AREA, HEFF, HSNOW as control variable
153        (should not change lab_sea results)
154      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
155    o pkg/seaice:
156      * added computation of saltFlux in seaice_growth;
157        For time being, sea ice salinity is assumed constant
158        contribution of snow flooding to freshening of sea ice is neglected.
159        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
160        defaults to 0.0 in order to maintain backward compatibility.
161        Typical values for SEAICE_salinity are 4 to 10 g/kg.
162      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
163      * added SEAICE_availHeatFrac, which specifies fraction of surface level
164        heat content used to melt or grow ice
165      * commented out cap of HICE: it helps keep ice thinner
166      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
167      * applied OBCS T/S mask to HEFFM sea ice mask
168    
169    checkpoint59d
170    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
171     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
172     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
173    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
174     and change default value of parameter "GM_Small_Number";
175     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
176       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
177       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
178    o pkg/ecco: cost function when applying pkg/smooth to controls
179    o pkg/ctrl: add forcingPrecond run time parameter
180    o pkg/seaice:
181     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
182     - fix bug in metric terms of u-equation in LSR solver (implicit part),
183       changes verification/lab_sea
184     - rearrange implicit part of u-equation in LSR solver to make it easier to
185       read, understand, and debug. This causes changes at the truncation level.
186     - fix (serious) bug in the boundary conditions (sign error in the implicit
187       part) of the LSR solver. Changes all LSR results.
188     - fixed problem with HSNOW initialization to avoid thick snow when AREA
189       is initilized with small values - does not change lab_sea results.
190     - added HsnowFile initialization capability
191    o pkg/smooth: addition to model/src and pkg/ctrl so allow
192     initialization of pkg/smooth and application to control vector
193    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
194    o dependencies: pkg/profiles requires pkg/cal
195    o pkg/profiles:
196     - added option ALLOW_PROFILES_GENERICGRID
197         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
198         that interpolation information (grid points and coefficients) is provided
199         within the netcdf input files.
200         -> sample matlab scripts can be found in MITgcm_contrib/gael
201         that allow you to prepare netcdf input files.
202     - also modified: cleaner include statements, cleaner error print statements,
203       cleaner stops when error, and more tests of the netcdf input files consistency.
204    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
205    o pkg/seaice:
206     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
207       requires a new routine: seaice_diagnostics_fill.F
208     - make sure that seaice does not move if not forced (pressure replacement
209       method, Hibler and Ip, 1995), changes results
210     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
211     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
212       It is turned off by default (=-1.), because it changes the results.
213     - make it possible to read AREA from a file, too.
214    
215    checkpoint59c
216    o add S/R and diagnostics for oceanic mixed-layer depth
217    o move GMRedi call after all vertical mixing schemes (including KPP)
218    o pkg/thsice:
219     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
220      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
221    o pkg/obcs:
222     - bug fix for balance code
223    o pkg/seaice:
224      - allow values of SEAICE_elasticParm > 1
225      - add new parameter SEAICE_evpTauRelax as an alternative
226        to SEAICE_elasticParm
227      - make lsr boundary conditions free slip (by default), changes result
228      - add code for no slip boundary conditions for lsr
229      - set minimum of zeta to zero (and not 4e8) (changes results)
230      - add a cap on AREA after advecting AREA if seaice_growth is not called
231    o change calculation of Visbeck K:
232      - no longer depend on tapering scheme; instead, compute slope (limited
233        by GM_maxSlope). this is equivalent to what was comuted before with
234        clipping or linear tappering.
235      - fix vertical averaging (wrong by 1/2 level)
236      - leave the old version (but will not be maintained) within
237        #ifdef OLD_VISBECK_CALC / #endif
238      - update output of exp. ideal_2D_oce
239    o change error catch in calc_r_star to improve vectorization
240    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
241      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
242    o adjoint:
243      Re-organized adjoint checkpointing according to Matt Mazloff
244      (but with modifs/completions/cleanups)
245      Storing is now bundled into large arrays to optimized I/O
246      (and second step in cleanup of the_main_loop)
247    
248    checkpoint59b
249    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
250      - export/import (between ocean & coupler) fields needed for ocean DIC.
251    o pkg/seaice:
252      - get rid of three more exchanges seaice_calc_viscosities (required
253        different loop boundaries in seaice_lsr and seaice_ocean_stress)
254      - bug fix in seaice_ocean_stress (update of lab_sea required)
255      - reduce loop boundaries to necessary minimum also in seaice_evp
256      - go back to the old way of computing deltaC/Z as the adjoint likes that
257        better
258    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
259      passive tracer to an Age Tracer) + update output.txt
260    o pkg/exf:
261      - implement A-grid / C-grid selection for wind-stress input files.
262      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
263      for now, in exf_bulk_largeyeager04.F only :
264      - change implementation for case where windspeed + 2. components wind-stress
265        are read-in. AND use rhoConstFresh to convert evap.
266    o pkg/seaice:
267      - use correct EXCH_UV for wind-forcing (on A-grid).
268      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
269        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
270    o pkg/exf:
271      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
272      EXF_INTERPOLATION:
273      - merge global_with_exf/code version of exf_interp_read.F
274        to the main code ;
275      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
276        reading the file ; Important: This options needs to be defined to recover
277        previous code.
278        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
279      - no longer loose real*8 precision along the way when using exf_iprec=64.
280    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
281      - change discretisation of evp-solver in order to avoid another exchange
282        (changes lab_sea) and clean up a little
283      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
284        help the adjoint (this also changes the results slightly)
285      - add a few "_d 0" where they had been missing in seaice_evp.F
286      - cleaning up: remove unused seaice_calc_rhs.F
287    o pkg/exf: some cleaning-up:
288      - change various "constants" into runtime parameters
289      - cleaned-up Large&Yeager04 routine which should eventually
290        replace exf_bulkformulae.F (changed names of S/R and CPP)
291        and merged various ALLOW_ATM_WIND options
292     only used with thsice pkg (in thsice_get_exf.F):
293      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
294        which are used when useStabilityFct_overIce=TRUE (= the default)
295      - change default values of ice & snow emissivity and scale downward LW
296        by ice & snow emissivity.
297    o pkg/thsice:
298     fix few little problems, in thsice_calc_thickn.F:
299      - growth vertically (and not laterally) if iceFrac == iceMaskMax
300      - melt only laterally if hIce < hThinIce (as the comments say)
301      and in thsice_extend.F:
302      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
303      - start to form ice as soon as the minimum ice-volume is reachable.
304     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
305      and cpl_aim+ocn
306    o pkg/kpp
307     - move computation of surface related input fields to KPP into a new
308       subroutine kpp_forcing_surf.F
309     - remove wrong (within bi,bj loops) EXCH calls.
310     - little cleaning (add argument myThid in last position, cvs header ...)
311     - for now, fix conservation problem by exchanging KPPviscAz (may not
312       be the best fix)
313    o pkg/seaice
314     - check for inconsistent evp parameter/cpp-flag combination
315     - remove leftover errIO flat for obsolete name list error handling
316    o OpenAD
317     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
318    
319    checkpoint59a
320    o pkg/seaice: some parameter clarifications and a little bit of clean up
321    o pkg/thsice: rename run-time parameters:
322       himin       -> hIceMin
323       himin0      -> hThinIce
324       hihig       -> hThickIce
325       i0          -> i0swFrac
326       transCoef   -> bMeltCoef
327       frac_energy -> fracMelting
328      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
329       with default values (for now) that do not change the results.
330      remove old version of thsice vars advection in pkg/seaice.
331    o in FFIELDS.h:
332      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
333      - make pLoad & sIceLoad always available (but still only used if
334         ATMOSPHERIC_LOADING is #define).
335    o pkg/kpp: replaced _KPP_RL with _RL
336    o bug fixes for vertical diffusivity computations when both KPP and
337        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
338        are no longer updating the vertical diffusivity array
339        (passed as argument) but are (re-) setting those arrays.
340    o pkg/seaice: fix bug in evp solver, while doing that
341      - change (improve?) discretization of stress computations for both
342        cgrid-lsr and evp solver
343      - add a new routine to compute strain rates
344      - the above changes lab_sea results
345      - add no slip conditions for evp solver (off by default), lsr-version
346        may follow
347      - fix exchange for shear at Z-points (does not change lab_sea)
348      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
349        (to force the user to pick a time step since there is not "safe" way
350        of choosing it)
351      - add principal stress diagnostics
352      - rearrange fields for evp a little to avoid having to call a: too many
353        exchanges and b: exchanges for stress trensor components which we do
354        not have.
355      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
356        of evp, complete rewrite for lsr case (latter is does not yet work
357        in all cases)
358    o pkg/kpp: add code to have mixing in shelf ice caverns
359      - add myThid to all kpp routines (long overdue)
360    
361    checkpoint59
362    o pkg/exf:
363      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
364        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
365      - move exf header files from lower_case.h to UPPER_CASE.h ;
366        add missing cvs Header & Name
367      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
368      - add namelist param. selectStressGridPosition, exf_monFreq
369      - retire many _CLIM routines, and remove data.exf_clim
370        + params moved to data.exf
371        + climsst, climsss now handled by exf_set_gen, i.e.
372          climss?period=0 refers to constant field,
373          climss?period=-12 to monthly forcing
374      - split up namelists in data.exf
375    o pkg/seaice:
376      - remove seaice_exch and seaice_exch_uv
377      - remove superfluous exchange of theta
378      - add myThid to seaice_budget_ocean/ice
379      - add new interface for atmospheric wind forcing (C-grid only)
380        + new routine
381        + two new field (taux, tauy for stress over ice)
382        + removed one global field (DAIRN) for C-grid case only
383    o pkg/thsise
384      - 2nd set of modifs for thsice adjoint in conjunction with exf
385    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
386    
387    checkpoint58y_post
388    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
389      vertical diffusivity, similar to that in MOM4; turned on using
390      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
391      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
392    o Added capability for 3D specification of background vertical diffusion
393      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
394      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
395      "data" file that contains the 3D vertical diffusivity coefficients.
396    o ice dynamics (pkg/seaice) with thsice thermodynamics:
397      - add code within pkg thsice to advect & diffuse sea-ice fields
398      similar to (and will replace) what has been added in  seaice_advdiff.F,
399      but: - conserving Mass, Heat & Salt.
400           - better when using non-linear advection scheme (not yet fully tested)
401           - can also be used in atmospheric set-up (for now, only the diffusion).
402    
403    checkpoint58x_post
404    o IO option for global-file compact format:
405      - add options when generating topology (utils/exch2/matlab-topology-generator)
406      - add I/O capability (pkg/mdsio).
407      - adapt utils/matlab/rdmds.m to read this format.
408      for now long-line format not yet supported by pkg/mdsio (& exch2).
409    o shelfice: add a few diagnostics
410    
411    checkpoint58w_post
412    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
413      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
414      (and replace horiVertRatio in NH code).
415      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
416                         and tutorial_plume_on_slope (sensitive to truncation)
417    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
418      directly to drive seaice model (C-grid only)
419    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
420     - reintroduce computation of wind from stress,
421     - compute tau (in exf_bulkformulae.F) from windstress averaged to
422       mass points to avoid tau = 0
423     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
424    o rdmnc.m: make it work with "global" files created with gluemnc
425    o rdmnc.m : some improvements in dealing with singleton dimension
426      (tested on all testreport mnc output files).
427    o genmake2: disable pkg/profiles if netcdf test fails.
428    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
429    o move call to cal_readparms up to make calendar parameters/variable available
430      to all packages
431    
432    checkpoint58v_post
433    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
434      useDynP_inEos_Zc tested.
435    o pkg/exf: changes to properly interpolate/mask/scale initial fields
436    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
437      and portions thereof.  See read_cs.txt for description and examples.
438    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
439      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
440      following the great-circle arc between those 2 points.
441    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
442      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
443    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
444     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
445     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
446     - still needs work (not working with some options ; efficiency to improve)
447       and serious testing.
448     - use this scheme for temperature & salinity in 2 advection test exp.:
449       advect_xy & advect_xz, respectively.
450    
451    checkpoint58u_post
452    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
453    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
454    o testreport: add option "-skipdir" to skip some test.
455    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
456      momentum calculation.
457    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
458    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
459      remove checkpoint.F and the_correction_step.F (no longer used);
460      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
461    o add option (linFSConserveTr) to correct for tracer source/sink due to
462      Linear Free surface
463    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
464    o pkg/thsice: fix reading mnc-pickups
465    
466    checkpoint58t_post
467    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
468    o pkg/mdsio:
469     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
470       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
471       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
472     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
473     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
474       either MDS_READ_FIELD or MDS_WRITE_FIELD )
475     - new S/R (to replace MDSWRITEMETA), which allows to write more
476       informations (variable names, time ...) to meta files.
477     - modify rdmds.m to give back the meta file content.
478    o pkg/diagnostics: change vertical interpolation to be safer, and more
479       flexible (define p-levels to interpolate to in data.diagnostics);
480      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
481       diagnostic pointer.
482    o pkg/seaice: more cleaning up of seaice_growth, added many comments
483    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
484    o fix multi-category seaice:
485     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
486       SEAICE_MULTICATEGORY
487     - fix short wave heat flux
488    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
489       and allow to use EVP solver. Change forward lab_sea: test both EVP
490       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
491    o Initial check-in of lab_sea adjoint
492      (very similar to natl_box_adjoint/code_seaice)
493      * used C-grid and EVP solver
494      * used KPP, GM/Redi
495      * uses inAdExact=.TRUE.
496      * gradient checks fail for both ADM and TLM
497        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
498        f.d. gradients actually seem more problematic than ADM, TLM gradients;
499        issue is related to forward mismatch between g77 an ifort
500    o pkg/seaice: overhaul of thermodynamics
501     - growth.F and groatb.F are replaced by new routine seaice_growth.F
502     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
503     - move a few global fields out of SEAICE.h into seaice_growth.F and
504       make them 2D (FICE/QNETO/ ...)
505     - remove FO (it is the same as QNETO)
506     - introduce a few local fields to avoid modifying external fields such
507       as atemp, etc.
508    
509    checkpoint58s_post
510    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
511      changed exf_set_gen.F so that
512        genperiod=0 means input file is one time-constant field and
513        genperiod=-12 means input file contains 12 monthly means
514    o CG2D: use pre-computed solver main-diagonal (stored in common block);
515      this affects truncation error ; generate new output file for exp. which
516      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
517        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
518        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
519        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
520        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
521        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
522    o start implementation of deep-atmosphere and anelastic formulation
523    o verification: remove 2nd copy of input files and use script "prepare_run"
524      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
525    o mom_common/vecinv/fluxform: fix a few initialisation isssues
526    o profiles: fix for multithreaded case
527    
528    o diagnostics: rename few diags:
529      s/'PRESSURE'/'RCENTER '/g
530      s/'TICE    '/'oceFreez'/g
531      s/'TAUX    '/'oceTAUX '/g
532      s/'TAUY    '/'oceTAUY '/g
533      s/'SWFLUX  '/'oceQsw  '/g
534      s/DIFx/DFxE/g
535      s/DIFy/DFyE/g
536      and add few ocean-forcing diagnostics:
537      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
538    o modifications to pkg/seaice/growth.F and budget.F, which change results of
539      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
540      as actual snow thickness.  It now refers everywhere to effective snow
541      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
542    
543    checkpoint58r_post
544    o modifications to pkg/seaice/growth.F, which change results of
545      lab_sea experiment: fixes pertain to melting snow over open water, to
546      masking EVAP under sea ice, and to using the correct AREA variable for
547      computations of EVAP, PRECIP, HSNOW, and GHEFF
548    o add ability to read bathy, salt, and theta using MNC (off by def)
549    o add flooding algorithm and advection of HSNOW for pkg/seaice;
550      both are turned off by default and do no change any results
551    o seaice advection with pkg/thsice: a step toward the use of non-linear
552      advection scheme, but #ifdef or commented out for now (requires more EXCH).
553    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
554      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
555      in natl_box (affects results @ truncation level: update output.txt)
556    o multi-threading and IO:
557      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
558      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
559        (needed to work with SingleCpuIO): tested in all verif. exp.
560    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
561      affects the results (but none of the verification test uses this scheme).
562    o Adding some pkg/diagnostics capability to pkg/seaice
563      (will certainly be subject to changes)
564    o ctrl: adding new control variables:
565      lwflux, lwdown, evap, snowprecip, apressure, runoff
566    
567    checkpoint58q_post
568    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
569      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
570      high_res_cube configuration by 4% on Columbia.
571    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
572      add (in global_with_exf/code) a version of EXF_INTERP_READ without
573      dynamical allocation (seems to work in multi-threaded).
574    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
575      single CPU io) so that TAF does not have to see EESUPPORT.h
576    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
577    
578    checkpoint58p_post
579    o obcs: stop if obcs is used with useCDscheme = .true.
580    o shelfice:
581     - fix a sign error so that no slip at shelfice interface works
582     - remove stop for combination non-hydrostatic code and shelfice. That does
583       not mean, that the results are correct, but at least they are numerically
584       stable
585    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
586    o added adjoint exch routined for all exch*3d* routines
587      and updated flow directives
588    
589    checkpoint58o_post
590    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
591      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
592    o change controling S/R for writing pickup file (new S/R do_write_pickup)
593      and clean-up reading/writing of pickup files.
594    o fix local version of read/write pickup (NH part) in rotating_tank/code
595    o simplify EXCH interface:
596     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
597     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
598    o added the regrid package
599    o shelfice:
600     - add a simple boundary layer scheme to reduce noise
601     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
602    
603    checkpoint58n_post
604    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
605       local variable (not in common block).
606    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
607      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
608      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
609        to work with SingleCpuIO.
610    o add "_d 0" to real constant of pkg/cfc subroutines ;
611       update exp. cfc_exemple & tutorial_cfc_offline output files.
612    o multi-threading and IO:
613      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
614        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
615      - barrier before and after reading.
616      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
617      - avoid using MDS_WRITELOCAL for LAND pkg output.
618      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
619        common-block variables ; Allows multi-threading with master-thread IO.
620    o change default MAX_NO_THREADS from 32 to 4 ;
621      and stop cleanly when MAX_NO_THREADS is too small.
622    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
623    
624    checkpoint58m_post
625    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
626       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
627    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
628       keep global_ocean.90x40x15 (for AD testing) with former secondary test
629       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
630    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
631        add MITgcm_tutorials (= code + all the tutorials)
632    o ecco, option to compute cost for total ssh (mean+anom)
633    o consistent with addition of ptracer and ssh in pkg/profiles
634    o profiles: adding ptracer and ssh
635    o testreport: change multi-test output-file name
636      (from output.txt.{name} to output.{name}.txt)
637    o profiles: now ok for mutli-tiles case
638    o seaice: add 4 parameters for different advection schemes for area,
639      (effective) seaice thickness, enthalphy, and snow height. Their default
640      is the standard parameter SEAICEadvScheme
641    o calc_gw:
642     - add cosFacU in zonal viscous flux (harmonic.visc.).
643     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
644       of tutorial_plume_on_slope.
645    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
646    o calc_gw: true flux-form, account for horizontal grid spacing.
647      update rotating_tank results, but not plume_on_slope (affected at
648      truncation level, 11 digits).
649    
650    checkpoint58l_post
651    o calc_gw:
652     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
653     - remove side-drag for now (need to fix it); update plume_on_slope results.
654     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
655    o commit code to make SST/SSS weights spatially variable
656      (based on either variable in-situ or variable initial T/S weights)
657    o pkg/ecco:
658      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
659        now based on horizontally varying weights wthetaLev, wsaltLev
660      * cost_averagesflags now returns year indices in addition to day, month
661      * sflux balance is performed on annual basis
662        (sflxumm, sfluxmm2, bal_sfluxmm)
663      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
664        including separate counting and multipliers
665    o pkg/rbcs
666      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
667    
668    checkpoint58k_post
669    o testreport:
670     - always build in dir. "build" (if not there, mkdir build instead of building
671       & running in input)
672     - run in dir run (if it exists), in build otherwise.
673     - call prepare_run (if input/prepare_run exists)
674     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
675    o pkg/exf modifications to interpolation and rotation routines for more
676       reasonable treatment of North Pole singularity: for tracers North Pole
677       value is set to northernmost zonal-mean value, for zonal velocity it is
678       set to zero, and for meridional velocity it is set to northernmost value.
679    o pkg/exf/exf_check_range.F
680     - add tile index to diagnostics and move stop statement to the very
681       end of the routine.
682    o pkg/diagnostics: (diagnostics_main_init.F)
683      define title of isomorphic variables according to the current config.
684    o pkg/thsice with pkg/seaice dynamics:
685    - fix domain of computation (interior only, required for exf) and do exchanges
686    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
687    o towards a standard way of dealing with multi-threading in MONITOR
688      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
689    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
690       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
691    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
692    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
693    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
694       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
695    o tracer advection:
696     - clean-up and simplify calc_common_factors.F
697     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
698       advection subroutine (but still not used within DST advection S/R)
699    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
700    
701    checkpoint58j_post
702    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
703      from file (collects calls previously in FORWARD_STEP)
704    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
705    o adjoint store dir. adjusted accordingly
706    o genmake2
707      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
708    
709    checkpoint58i_post
710    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
711      on wind stress (SEAICEstressFactor defaults to 1.)
712    o Total number of Timers is finite (<=40): comment out 2 non-essential one
713      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
714    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
715      on CS-grid: no longer loosing mass.
716    o exf & curvilinear-grid: no longer modify longitude xC & xG.
717    o pkg/ggl90: fix sloppy output and fix a bug
718    o pkg/seaice: added SEAICEuseEVPpickup parameter
719      - Set to false in order to start EVP solver with
720        non-EVP pickup files when using SEAICEuseEVP
721      - fix sign error in diffusion in seaice_calc_rhs
722    
723    checkpoint58h_post
724    * Modifications for bottom topography control
725      o replace hFacC by _hFacC at various places
726      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
727      o add non-self-adjoint cg2d_nsa
728      o update autodiff support routines
729      o re-initialise hfac after ctrl_depth_ini
730      o works for 5x5 box, doesnt work for global_ocean.90x40x15
731    * Adding verification for 5x5 box (4-layer) bottom topography control
732    
733    checkpoint58g_post
734    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
735       used for mean seasonal cycle, mean diurnal cycle); add an example
736       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
737    o pkg/ggl90:
738      - add parameter (minimum surface kinetic energy)
739      - fix bug (avoiding division by zero)
740    o couple pkg/thsice to pkg/seaice:
741      - modify advection in seaice to accomodate new scalar fields to be advected
742      - only muliDimAdection scheme work with seaice/thsice
743      - mapping of thsice-variables to seaice-variables, back and forth
744      - does not break the verification experiments, but does not give the
745        desired results either
746    o pkg/seaice
747      - make (default) second order advection a bit less confusing?
748    
749    checkpoint58f_post
750    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
751      to pkg/seaice):
752      - new routines thsice_map_exf and thsice_get_exf provide the interface
753      - add an additional formal parameter to thsice_solve4temp
754    o pkg/exf:
755      - add new fields wspeed, snowprecip (to be able to couple to thsice)
756      - correct Stefan-Boltzmann constant
757      - new parameter for longwave surface emittance
758      - separate some stuff from exf_bulkformulae into new routines  
759        exf_radiation, exf_wind
760      - add new parameters and constants: longwave emissivity for ocean, ice
761        and snow, evaporation parameters over ice
762      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
763        either wind from stress or stress from wind
764    o pkg/thSIce:
765    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
766    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
767       and THSICE_CALC_THICKN
768    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
769    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
770      to make debugging easier.
771    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
772    o pkg/bulk_force:
773      - clean-up comments and parameters ;
774      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
775    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
776      generate new output for test-experiment: aim.5l_cs.thSI
777    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
778      testreport accordingly
779    
780    checkpoint58e_post
781    o SEAICE_CGRID adjoint done
782    o R_STAR adjoint implemented.
783      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
784      * need to sort out init. of h0facc, etc.
785    o Make pkg/profile fully independent of ecco,cost, etc. stuff
786      to be able to use it in pure forward.
787    
788    checkpoint58d_post
789    o upgrade simple test-experiment to tutorial example:
790     step.1: duplicate the experiment and (step.2) will remove the old copy.
791      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
792      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
793      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
794      tutorial_global_oce_biogeo    <- copy of dic_example
795      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
796      tutorial_plume_on_slope       <- copy of plume_on_slope
797      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
798      tutorial_global_oce_optim     <- empty for now (David ?)
799      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
800     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
801    o correct a sign problem in cost_scat.F
802    o obcs and ptracers: fix boundary conditions for advections schemes
803      with larger stencil
804    o thsice adjoint: start
805    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
806      completeness
807    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
808      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
809    o ptracers adjoint:
810      * avoid extensive recomputatations
811      * fix missing re-init. of gptr (missed by TAF)
812    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
813      me to turn off the excessive output to STDOUT that this package produces
814    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
815      and add those terms in Vector-Invariant formulation.
816    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
817      if the control period (xx_hfluxperiod etc) is 0
818    o in profiles pkg, clean routines and fix details
819    o in ecco pkg, reading ssh data:
820      fix problem in case the model does not start at iter0=0
821    o fix mnc-pickup/restart for ptracers
822    o new package prifiles:
823      code to compute profile-based cost by Gael Forget
824      (modifs in ecco, ctrl, autodiff)
825    o Benign bug fix in initialization (spotted by M. Mazloff) of
826      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
827    
828    checkpoint58c_post
829    o adjoint: finish NLFS adjoint and provide reference output in
830      verification/global_ocean.90x40x15/results_ad_nlfs
831    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
832      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
833      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
834      with SEAICE_CGRID defined.
835    o move calendarDumps from "data" to "data.cal" and clean-up the code
836      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
837    o add useEXF & useCAL flags (for now, set in hard-coded way)
838    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
839      (were missing in NH mode, and wrong in quasihydrostatic mode).
840      waiting for Chris updated version of calc_gw to add those CALLs.
841    o fix bug in quasihydrostatic S/R ;
842      add a test for this option: global_ocean.90x40x15.qshyd
843    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
844      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
845    o add on/off flag useOffLine for package OFFLINE
846    o seaice:
847      - modify advection so that it works also on the C-grid
848      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
849        problem in multi-tile runs with C-grid
850      - add flags for clipping ice velocities and/or masking solver forcing
851      - fix drag (ocean on ice) formulation and a bug that caused noise in the
852        C-grid solver
853      - added a few comments to seaice_diffusion.F
854      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
855        are now exclusive)
856      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
857        required re-ordering the code a little:
858       + make DAIRN global variable (defined in SEAICE)
859       + move computation of the viscosities eta and zeta into a new separate
860         routine (because I need to recompute them in seaice_ocean_stress.F)
861    
862    checkpoint58b_post
863    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
864      update output.txt of exp. aim.5l_cs.thSI
865    o various mnc cleanups and improvements:
866      + shrink lookup tables by factor of ~4
867      + better error reporting when running out of lookup space
868      + able to handle longer path/file names (up to 500 chars)
869    o adjoint:
870      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
871      - TBD: "hidden" mom_vecinv recomp. in dynamics
872    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
873     (allow to differentiate between forcing components using new integer flags:
874      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
875     and add new flag to put Dissipation tendency out of Adams-Bashforth.
876    o ecco
877      - enable trend removal from SSH anomaly obs.
878    o adjoint
879      - a fix for PmEpR when #undef EXACT_CONSERV
880      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
881      - try to fix "hidden" recomp. in forward_step for NLFS
882        (NLFS seems broken sometimes after I checked it in)
883    o seaice:
884     - add c-grid version of the dynamic solver:
885       + three new routines that are the c-grid substitute lsr, dynsolver
886         and ostres
887       + put a few fields that were local to dynsolver into global common
888         blocks, so that I can move the computation of stresses etc into
889         seaice_lsr (saves coding but may break the adjoint).
890     - replace more hardwired parameters by runtime parameters
891     - add ice masks that mask the rhs of the implicit solvers where there
892       is no ice (commented out in seaice_dynsolver, because i am not sure
893       if this works properly), eventually this should replace the clipping
894       of ice velocities in seaice_dynsolver to +/-40cm/s.
895    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
896      include it only where its needed
897    o move balancing of fluxes before the call of external_forcing_surf
898    o seaice:
899      - correct units of turning angles (now they are really in degrees)
900      - move computation of GWATX/Y out of main routine into dynsolver
901      - initialize GWATX/Y in seaice_init
902    o Apply mask on Fresh-Water flux (needed for SSH forcing).
903      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
904    o seaice: add runtime flags for turning angles (default to zero)
905    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
906      and trend from exf forcing and ctrl control adjustments
907    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
908      (since checkpoint57x_post)
909    o change the default rotation period to 86164.s = the Earth rotation
910    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
911      and based on a reference stratification. Tested within hs94.cs-32x32x5.
912    o seaice advection: add code for choosing between the default (2nd order
913      central differences) and multiDim advection schemes provided by
914      pkg/generic_advdiff
915    o seaice:
916      - removed all references to SEAICE_GRID.h fields from
917        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
918        (cubed-sphere configuration will change a little)
919      - grid computations in seaice_init are obsolete now.
920      - cleaned up code a little so that is easier to read (hopefully).
921      - added new (better?) discretizations of default advection and diffusion
922        (turn on with SEAICEuseFluxForm)
923      - replace 1 in 3d global fields by kSurface in growth.F
924      
925    checkpoint58a_post
926    o seaice:
927      - bug fix in advect.F
928    o shelfice:
929      - separate shelfice load anomaly from pload (breaks with time
930        dependent forcing), => introduce constant field shelficeLoadAnomaly.
931        Its default is 0., but it may be computed more cleverly from (unknown)
932        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
933        done offline. A good approximation of the pressure load anomaly is
934        necessary to avoid large initial adjustment processes underneath
935        deep-reaching shelfice.
936      - small fix in ISOMIP shelfice_thermodynamics
937      - add more sophisticated thermodynamics of Hellmer (1989), this is
938        now the default
939      - give a few constants more intuitive names
940    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
941      if bulk formulae are used in long integration (especially EmPmR). Turn
942      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
943      if balancePrintMean, the imbalance that is substracted is printed to
944      STDOUT.
945    o fix bug (typo) in obcs_apply_eta.F
946    o add a new package shelfice which enables us to model the circulation
947      underneath shelf-ice with draughts of hundreds of meters.
948     - works
949     - to do: + include improved thermodynamics
950              + check whether kSurfC (from model/inc/SURFACE.h) can be used
951                instead of new field kTopC
952              + can we use topoFile, Ro_surf and existing code in ini_depth.F
953                instead of new field R_shelfIce and new code in ini_depth.F
954                and ini_mask_etc.F?
955              + adjust vertical mixing schemes?
956    o seaice pkg:
957     - add a cpp-flag to include a simple formula for a salinity dependent
958       freezing point of sea water at the surface
959     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
960       meridional stresses are now different (and hopefully correct)
961    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
962       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
963       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
964    o pkg/diagnostics: add options and parameters for regional-statistics
965       diagnostics ; define regions by reading a region-mask from a file
966       (might add other options later)
967    o pkg/bulk_force:
968     - add option and parameters to use AIM surface-flux formulae.
969     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
970       others forcing fields (defined in PARM05, parameter file "data") are loaded
971       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
972     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
973     - use the right EXCH call for uwind,vwind (to work on CS-grid).
974     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
975       and parameters (note: calcWindStress replaces .NOT.readwindstress).
976     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
977    
978    checkpoint58
979    o add "--embed-source" option to genmake2 which, when the supporting
980      tools can be compiled (as determined by genmake2) will turn on the
981      embed_files package which then embeds the entire MITgcm source code
982      (*.[fFhc] + Makefile) used for the build within the executable
983      - requested by CNH but off by default
984      - adds a paltry <9MB to the mitgcmuv executable in most cases
985      - only writes the output when useEMBEDSRC in eedata is true
986    o clean up 3-dim. relaxation codes:
987      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
988      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
989      * Thanks to Tom Haine for testing!
990    
991    checkpoint57z_post
992    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
993      affects output (@ truncation level) of exp. plume_on_slope ; updated.
994    o fix the pickup behavior for obcs in combination with ptracers
995    o fix a bug in ptracers_external_fields_load
996    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
997      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
998    o transfered surface NH pressure to eta field (if exactConserv).
999    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1000         and update lab_sea output.txt file.
1001    o completing 3-dim. relaxation code: additional term
1002         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1003      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1004      * At compile time, in "EXF_OPTIONS.h" set
1005          #define  ALLOW_CLIMTEMP_RELAXATION
1006          #define  ALLOW_CLIMSALT_RELAXATION
1007      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1008          tauThetaClimRelax3Dim = 15552000.0,
1009          tauSaltClimRelax3Dim  = 15552000.0,
1010      * 3 cases:
1011          1) Use a constant-in-time 3-dim. field
1012          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1013          3) Real-time relax. to time-evolving prescribed field
1014    o Adding Laplacian-type smoothness constraint on
1015      initial and boundary (forcing) controls (ic, bc)
1016      * enable at compile-time via
1017        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1018      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1019      * Absolute scale somewhat unclear so far
1020      * no area weighting was included since no other cost term does so far
1021    
1022    checkpoint57y_post
1023    First step for a NLFS adjoint
1024    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1025    o new init. routines for calc_r_star, calc_surf_dr
1026    o still need to deal with ini_masks_etc
1027    o testreport seemed happy
1028    checkpoint57y_pre
1029    
1030    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1031    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1032    o add new offset feature to offline pkg (plus minor cleanup)
1033    o cfc fixes for final year of integration
1034    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1035      be in GCHEM_OPTIONS).
1036    
1037    checkpoint57x_post
1038    o fix testreport Pb in multiple test experiment.
1039    o cleanup our namelist syntax in verification:
1040      - make it more F95 standards compliant (some work still needed)
1041      - allows the vast majority of our tests to work with gfortran
1042    o Non-Hydrostatic:
1043     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1044     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1045    o Allow to apply AB on T,S rather than on AB(gT,gS):
1046     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1047     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1048       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1049     - need a "clever" read_pickup to restart from the other AB formulation
1050    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1051    o remove some unused variables (reduces number of compiler warnings)
1052    o adjoint
1053      * Disable useVariableViscosity for adjoint for time being
1054        (there are a number of extensive recomputations)
1055      * Initialize certain variables needed for adjoint
1056    
1057    checkpoint57w_post
1058    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1059                 fix the singleCpuIO RS version of MDSWRITEFIELD
1060       and add a WARNING if using globalFiles=T with multi-processors.
1061    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1062      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1063    o tracer advection scheme:
1064      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1065       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1066       was not very convenient).
1067      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1068       (further tests needed for the implicit DST & Flux-Limiter schemes).
1069    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1070      and sRef for convenience, handy, when you want to initialize
1071      ptracers in a large domain with a constant non-zero value. Also,
1072      untangle ptracers_init.F a little.
1073    
1074    checkpoint57v_post
1075    o change dome exp. to use variable viscosity in side-drag terms.
1076    o remove all the files from the cfc_offline test since they are now
1077      incorporated into tutorial_cfc_offline which has been producing
1078      identical results for a few days of testing
1079    o add new parameter: sideDragFactor to enable half-slip-side BC
1080      and change side-drag S/R to use viscosity from mom_calc_visc
1081      (can switch back by setting sideDragFactor=0.); affects results at
1082      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1083       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1084    o vorticity & strain are now computed without masking, to account for
1085      no-slip-side BC in variable viscosity calculation ; mask is applied
1086      anyway later on, before computing advection/coriolis terms.
1087    o modify exp4 to test new obcs support for reading from external files
1088      and for passive tracers
1089    o fix behavior of ptracers_monitor when monitor output is written to a
1090      netcdf-file; still not independent of monitor.F (writes in the same
1091      file).
1092    o change default value of tRef (put a uniform, meaningful value for ocean
1093      & atmos) and initialize sRef (was missing, as Martin mentioned).
1094    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1095      to be proportional to enstrophy dissipation length.  Thus,
1096       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1097      This is now consistent with Smagorinsky and with the manual.
1098    
1099    checkpoint57u_post
1100    o OBCS and PTRACERS: add open boundary support for passive tracers
1101      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1102        OB-values from file; this is not different from the way theta and salinity
1103        are treated
1104      - however, Orlanski-radiation conditions are not supported, and the model
1105        will stop if you use pTracers and Orlanski at the same time.
1106      - beefed up the rountine obcs_external_fields_load: now only those open
1107        boundary values are overwritten with values from files for which there
1108        are really files, otherwise the OB-fields remain untouched. This makes
1109        it possible to use different OBs at different ends of the domain (as
1110        with EXF)
1111    o reduce number of exch calls in shap_filt (s2).
1112    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1113      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1114    
1115    checkpoint57t_post
1116    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1117    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1118      same truncation, independent of the face number: affects affects several
1119      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1120    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1121      note that biharmonic viscosity + no-slip was not tested in any experiment.
1122    o fix bug in non-linear free-surf side-drag ; generate new output for
1123      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1124    o make mnc honor the writeBinaryPrec flag for most kinds of output
1125    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1126    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1127      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1128    o add brackets in multi-terms sum to get same truncation, independent of
1129      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1130      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1131    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1132      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1133      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1134      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1135      Suggested values of viscosity parameters found in mom_calc_visc.
1136      Many new viscosity diagnostics available.
1137    
1138    checkpoint57s_post
1139    o Add clearing-house for viscosity calculations, mom_calc_visc and
1140      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1141      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1142      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1143      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1144      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1145      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1146      ViscAhStrain and viscAhTension are now retired.
1147    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1148    o In response to JMC's bug report, genmake2 now ignores any soft-links
1149      that it finds in the *current* directory when searching for files.
1150      Soft-links found in any other source directories will still work as
1151      they did before.
1152    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1153      a C routine to unlimit the stack size
1154    o mnc-ify pkg/aim snapshot vars
1155    o mnc-ify pkg/land as requested by Daniel
1156    o various changes to mnc including:
1157      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1158      - output can now be grouped so that all files within a group
1159          change the ITER portion of their names in lock-step together
1160      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1161          and works with both EXCH1 and EXCH2 (but needs more testing)
1162      - writing works for all verification test cases w/ g77 on Linux
1163    
1164    checkpoint57r_post
1165    o make MNC variable initialization happen earlier
1166    o add diagnostics for (almost) each term of the momentum Eq.
1167    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1168    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1169    o remove MINIMAL_TAVE_OUTPUT option ;
1170      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1171    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1172      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1173    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1174    o add time-dependent SST, SSS control
1175    o cost terms in ecco/ modularized (new cost_generic.F)
1176    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1177    o new infrastructure for seaice model vs. obs misfits in seaice/
1178      * driver from the_main_loop.F is seaice_cost_driver.F
1179      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1180      * gradient check in Exp. 6a of natl_box_adjoint/
1181    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1182      (see README file)
1183    
1184    checkpoint57q_post
1185    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1186    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1187      - bug was reported by Jean-Michel and Ian Fenty
1188    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1189      update exp. cpl_aim+ocn output.
1190    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1191      Needed for high-res. runs with large global files
1192      to be able to limit tapelev size
1193    o Changed some tests for adjoint:
1194      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1195      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1196      * global_ocean.90x40x15/ back to default 3-level checkpointing
1197    o Modifications to enable scripted COMMON to MODULE conversion
1198      * verification/OpenAD/code/ has necessary scripts and description;
1199      * converts, compiles and runs successfully;
1200    
1201    checkpoint57p_post
1202    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1203    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1204      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1205    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1206    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1207      (was already the case for dissipation with mom_vecinv,
1208       and also the case for grad.PhiHyd when staggered-timeStep)
1209      This will allow to put dissipation out-off the AB time-stepping.
1210     Unfortunately, affects truncation error. Update output of exp. that "fails"
1211      (cg2d matching number) and leave the others for later: front_relax(10),
1212      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1213      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1214    
1215    checkpoint57o_post
1216    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1217      (2) its ready to be documented during the 20050801 DocFest
1218    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1219      for ideal_2D_oce and lab_sea on linux_ia32_g77
1220    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1221      in global1x1_tot/code_seaice_adj to access indices 32, 33
1222      (worth another tag)
1223    
1224    checkpoint57n_post
1225    o adding precip control xx_precip 32
1226    o adding swflux control xx_swflux 33
1227    o Replacing 10 forcing penalty cost routines by 1 generic.
1228    o Implementing partitioning in time-mean and variable adjustment
1229      for atmos. state.
1230    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1231    o in natl_box_adjoint:
1232      * updated exp 1 to 10
1233        (but does not have time-mean vs. variable split results yet)
1234    o updated global1x1/*_seaice_adj/
1235      to incorporate latest changes
1236    o enable useSingleCpuIO for mdsio vector routines
1237      (applies in particular to tapelev I/O)
1238    o removed inefficient K-loop in all active_file*control*.F
1239    
1240    checkpoint57m_post
1241    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1242      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1243    o pkg/exch2: filling of face-corner halo regions is optional
1244      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1245    
1246    checkpoint57l_post
1247     tag before updating tutorials (pre-release-2)
1248    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1249       for output and interpolation of input fields onto model grid)
1250    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1251       Affects results of exp. rotating_tank ; update output.txt.
1252    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1253          and taking the square quantity and/or using a fraction-weight field.
1254    o fix aim_diagnostics_init.F mate numbers.
1255    o add mnc output capability to diagnostics/diagstat and update
1256      our cvsignore files for the ACSII output generated
1257    
1258    checkpoint57k_post
1259    o lab_sea now uses diagnostics package and provides a suite of
1260      new EXF diagnostics output.
1261    
1262    checkpoint57j_post
1263    o exf
1264      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1265        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1266        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1267      * extended diagnostics output
1268        - now includes all EXF variables
1269        - hs, hl moved to common block
1270        - separate S/R for diagnostics, called after ctrl vector is added
1271        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1272        - EXFqnet contains true Qnet (i.e. includes qsw)
1273      * updated verif. lab_sea, global_with_exf
1274      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1275        to ensure that diagnostics sees a true EXFqnet
1276    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1277    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1278      several times with different frequencies.
1279    o mnc-ify the thsice package as requested by Daniel Enderton
1280      - the monitor--MNC output needs work
1281      - many attributes need to be added (most are currently blank)
1282    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1283      - many attributes need to be added (most are currently blank)
1284    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1285    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1286    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1287      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1288         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1289    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1290     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1291    
1292    checkpoint57i_post
1293    o Diagnostics package was changed: diagnostic allocation is now deactivated
1294      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1295    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1296      add 1rst Order upwind vertical Shear.
1297    o add a quick fix for A/B checkpointing in OFFLINE mode
1298    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1299      end-run around the C/Fortran linking horror in eesup/src/timers.F
1300    o added pkg/runclock: allows user to terminate run based on wall clock
1301    o added non-hydrostatic scaling parameter: nh_am2
1302    o pkg/my82: futile attempt to make results compiler-independent by adding
1303      some "_d 0", etc. no effect.
1304    o for mnc output, fill the 'T' coordinate var with myTime and create a
1305      separate 'iter' variable for iteration count
1306    o pkg/diagnostics:
1307      add new capability: output of Global/Regional & per-level statistics ;
1308      tested against monitor output (including land & thSIce) on various exp.
1309    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1310    
1311    checkpoint57h_done
1312      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1313      data.diagnostics, data.gchem, data.ptracers) is done.
1314    
1315    o pkg/diagnostics: prepare for Global/Regional statistics.
1316      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1317    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1318      and rename it: DIFFERENT_MULTIPLE
1319    
1320    checkpoint57h_post
1321    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1322    o pkg/diagnostics: change output frequency, now in seconds (instead
1323      of Nb of iterations). This requires to change data.diagnostics.
1324    checkpoint57h_pre
1325    
1326    o in mnc, let the user create the output dir if both mnc_outdir_date
1327      and mnc_outdir_num are false
1328    o add fflags() to pkg/diagnostics which allows one to specify, on a
1329      per-file basis, the file precision [default behavior is unchanged]
1330    o added diagnostics to pkg/kpp, including computation of mixed layer
1331      depth based on a temperature/density criterion
1332    o updated verification/natl_box to test the new pkg/kpp diagnostics
1333    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1334    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1335    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1336      not mnc -- this mistake was found by JMC and is now corrected
1337    
1338    checkpoint57g_post
1339    o add Adams-Bashforth 3rd Order time stepping:
1340      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1341      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1342    checkpoint57g_pre
1343    
1344    o make lambda[Theta,Salt]ClimRelax spatially varying
1345      (default remains spatially uniform constant based on tau)
1346    o added new control variables
1347      * init. uVel, vVel, etanN
1348      * lambda[Theta,Salt]ClimRelax
1349    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1350      (suggested by G. Forget)
1351    
1352    checkpoint57f_post
1353    o add parameter "baseTime" = model base time = time at iteration zero
1354      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1355      account for baseTime shift
1356    o move Coriolis arrays from PARAMS.h to GRID.h
1357    checkpoint57f_pre
1358    
1359    o mnc-ifying the seaice package
1360    o introduced an alternative length scale calculation for use in the limiting
1361      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1362    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1363    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1364      as well as grad(vort3).  Made it compatible with both approximate form
1365      for the cubed sphere and full form of these gradients.  Added flag
1366      useFullLeith to select between approximate and full form.  
1367    o add "d0" in getcon.F to reduce differences between compilers/platforms
1368      update output.txt of exp. fizhi-gridalt-hs
1369    o change port_rand funtion to allow to set the seed.
1370    o fix obscure MNC bug involving conversion between reals and integers
1371      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1372        new version is now more standards-compliant
1373    o adjoint-related modifications
1374      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1375      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1376      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1377    
1378    checkpoint57e_post
1379    o Adding eddy stress controls a la Ferreira et al.
1380    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1381    
1382    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1383      update output.txt of exp. fizhi-gridalt-hs
1384    o add more "Z" dimensions and associated coordinate vars to MNC
1385    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1386    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1387      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1388      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1389      months and years.  Requires pkg/cal.
1390    o diagnostics: add pickup functionality
1391      - off by default for backwards compatibility
1392      - current version only uses MDSIO -- MNC will be added
1393    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1394    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1395    
1396    checkpoint57d_post
1397    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1398    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1399      output from the diagnostics package
1400    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1401    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1402      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1403    o add coordinate variables to the MNC output from the diagnostics package
1404    o change MNC-flags default value: true when useMNC=TRUE
1405    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1406      the ability (off by default) to read the grid information using MNC
1407    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1408    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1409    o do snap-shot diagnostics at the middle of the time-interval (instead of
1410      at the end).
1411    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1412      new test for AIM with thSIce + slab-ocean
1413    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1414    o move state variable diagnostics to the beginning of the time step ;
1415      (note: still needs some work specially for snap-shot diagnostics)
1416      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1417    
1418    checkpoint57c_post
1419    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1420    o generate new output.txt files on faulks with g77 & the new -ieee option
1421    checkpoint57c_pre
1422    
1423    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1424      update output.txt of exp. global_ocean.90x40x15
1425    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1426      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1427    o add saltFlux(+File) forcing capability with periodicExternalForcing
1428    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1429    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1430    o improvements for the MNC output from DIAGNOSTICS:
1431      - correct handling of the unlimitied dimension
1432      - all dims now have associated coordinate variables
1433      - variables located at U, V, and Corner ("Z") points are now written
1434        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1435        *all* data points are output
1436    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1437    o added pkg/seaice/seaice_monitor.F
1438    o mdsio_readfield.F can now read files visible only to master MPI process.
1439    o pkg/seaice: some test code for ice-modified ocean stress
1440    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1441      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1442      spurious negative numbers for precipitation and humidity.  Will cause
1443      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1444    o pkg/ctrl/
1445      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1446        May be enabled via doPackDiag
1447      *  introduce z-scaling of
1448         + gradient (doZscalePack) and
1449         + control (doZscaleUnpack)
1450    o pkg/mdsio/
1451      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1452      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1453    
1454    checkpoint57b_post
1455    o simplify options in diagnostics_fill arguments (remove weird combinations)
1456    o fix MNC coordinate variables so that they now contain per-face index
1457      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1458      general, EXCH2 grids are only aligned to a "local" coordinate system
1459    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1460    o Implement instantaneous output within pkg diagnostics:
1461      setting a negative frequency in data.diagnostics produces
1462     "snap-shot" output (as opposed to time-average if freq > 0)
1463    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1464      NOTE: change ptracer diagnostics name: use 2 characters to work with
1465            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1466    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1467      becomes the coordinate variable for the 'T' dimension
1468    o add CF-style coordinate variables to MNC
1469      - just a first cut:  numbers are meaningless on the cubesphere and
1470        missing along the T axis but otherwise it works!
1471    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1472    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1473    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1474      this is based directly on what the model compute, so that the content of
1475      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1476    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1477    o clean up build options files for SunOS, in particular
1478      - remove -traditional from xmakedepend
1479      - change -xarch=v9 to -xarch=native for f77
1480      - restore use of make (not gmake)
1481      - add CC=gcc if using g77
1482    o changes per discussion of AM, JMC, & EH3 today:
1483      - move redundant "grid" variables out of "state" -- in preparation of
1484        creating proper CF-style coordinate variables and in recognition
1485        that any/all grid variables can be easily copied (eg. w/NCO) from
1486        the grid files into any of the other NetCDF files
1487      - *always* output grid variables with MDSIO (this will eventually be
1488        changed)
1489      - output MNC grid file if useMNC is true
1490    o every instance of _END_MASTER() has been found and replaced with
1491      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1492      preprocessors
1493    o re-arrange diagnostics pkg initialisation:
1494     - allow each package to extend the available diagnostics list
1495     - add some checking and fix small problems (multi-threaded, ...)
1496     - new S/R diagnostics_fill (replace fill_diagnostics):
1497       look through the short list of active diag. (instead of the long list)
1498       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1499    
1500    checkpoint57a_post
1501    o this set of changes restores TAMC compatibility
1502      tested for global_ocean.90x40x15 adjoint on trough
1503      (what a pain)
1504    
1505    checkpoint57a_pre
1506    o some modifs in tools/build_options for sunos
1507    o call ctrl_pack for ctrl at end for optimcycle=0
1508    
1509    checkpoint57
1510    o add horizontal bi-harmonic viscosity for vertical velocity
1511      - new parameter viscA4W (defaults to viscA4)
1512      - affects only non-hydrostatic code
1513      - to be done: no-slip lateral boundary conditions
1514    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1515    o implement Implicit Vertical advection for pTracers
1516    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1517      (implemented also for implicit vertical diffusion & advection)
1518    o OBCS: extend application of tracer open boundary conditions
1519      to a strip beyond the boundary of width Olx/Oly
1520    o add call monitor to TAF set of required calls (flow directives)
1521      and include in natl_box_adjoint
1522    o untangle a few ifdefs related to cost, ctrl, autodiff
1523      untangel a few ALLOW_ECCO_OPTIMIZATION
1524    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1525      (theta2, salt2 in ecco_cost_weights)
1526    
1527    checkpoint56c_post
1528    o OBCS as control variables
1529      - update ctrl_ad_diff.list, obcs_ad_diff.list
1530      - remove balance of obcs controls from default
1531      - fix index bug nobcs in ctrl_init
1532      - fix dummy fields filen in ctrl_pack
1533      - add dummy weights for obcs
1534    o lsopt: comment out fort.94 output
1535    o optim:
1536      - remove unnecessary header files
1537      - adjusted namelists
1538      - add xerbla.F to Makefile
1539    o exf:
1540      - multiple modifications of exf_check_range
1541      - unit change in exf_init_runoff from [m/year] to [m/s]
1542    o mdsio:
1543      - i/o-vector change debugLevel from debLevA to debLevB
1544    
1545    checkpoint56b_post
1546    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1547      is called from DO_THE_MODEL_IO
1548      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1549      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1550      - clean up PTRACERS_WRITE_TIMEAVE a little
1551    o add another verification experiment that tests both the cfc-pkg and
1552      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1553      reactive tendencies treated inline with regular timestepping
1554    o testreport previously did a lousy job of comparing small numbers, so
1555      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1556      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1557      testreport.
1558    o ptracers_monitor: bug fix for MPI
1559    
1560    checkpoint56a_post
1561    o GCHEM: finish reorganizating the package
1562      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1563        (introduces another 3D-array for each passive tracer, but only if
1564        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1565        gchemTendency is not needed because the timestep is done separately)
1566      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1567      - GCHEM is now---more or less cleanly---separate from PTRACERS
1568      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1569        so clear to me how that should be done in a general way.
1570    o CFC: improve formatting of output in CFC_ATMOS
1571    o PTRACERS:
1572      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1573        that ALL experiments with ptracers enable can be checked. This makes
1574        GCHEM_MONITOR obsolete.
1575      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1576        monitorFreq
1577      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1578    o add PTRACERS (PTR0[1-5]) to testreport output
1579    o exf_check_range:
1580      * default changed to .TRUE.
1581      * will check values for niter0 if debLevA, every timestep if debLevB
1582      * STOP in exf_check_range if 'out of range'
1583      * range chosen generous to allow for potential extema
1584      TBD: a version with stricter range
1585           permitted range would be runtime parameters
1586    o GMredi:
1587      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1588      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1589      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1590    o GCHEM:
1591      - move call to GCHEM_FORCING_SEP, so that it is now called before
1592        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1593      - introduced a useGCHEM runtime flag and applied it everywhere.
1594      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1595        this flag is now only visible within GCHEM-pkg routines.
1596      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1597        be replaced by a 3D array that is computed before thermodynamics; for
1598        this, the tracer ID iTracer had to be included into the parameter list
1599        of ptracers_forcing
1600      - set up forward_step to call gchem_forcing, that will replace
1601        gchem_forcing_int in ptracers_forcing
1602      - cleaning up
1603    o small cleaning of exch2: remove files that are also in eesupp/src
1604    
1605    checkpoint56
1606    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1607    o mnc: cleanup "full" files--fixes out-of-memory problem
1608    o ECCO-GODAE
1609      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1610      * fully merged and updated from SIO code
1611        windstress sign change affects
1612        - exf_inscal_[u/v]stress
1613        - sign of xx_tau[u/v] adjustments
1614        - signs in cost_scat
1615      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1616      * natl_box_adjoint updated and compressed
1617      * 2-level checkpoint switch added
1618        (tested in EXP. 1 of natl_box_adjoint)
1619      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1620    o SVD
1621      * first complete, non-hacked version for SVD calculations
1622      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1623        performed via direct access files admtlm_vector.it????
1624        (via ctrl_[un]pack)
1625      * optimcycle is used for ARPACK iteration counter
1626        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1627      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1628        and add linear transforms where necessary
1629      * controls are initial/final SST, SSS (can be extended; need to check
1630        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1631    o mdsio: filename info to both stderr, stdout
1632    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1633      from sign change
1634    
1635    checkpoint55j_post
1636    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1637      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1638    o add consistent build directories and .cvsignore files to verification
1639    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1640    o make all subroutines 30 or less characters in length for certain older
1641      compilers to work (a thorough search only turns up two routines in
1642      pkg/ptracers)
1643    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1644      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1645    
1646    checkpoint55i_post
1647    o change arrays for total vertical diffusivity (2.D if explicit,
1648      3.D if implicit) ; each ptracer uses its own background value.
1649    o added mnc/NetCDF output capability to ocn_compon_interf
1650      - added bits to verification/cpl_aim+ocn so that it can run on
1651        ITRDA and other clusters without the mpirun "-wd" option
1652    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1653      configuration
1654    o give MNC the ability to create additional files rather than
1655      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1656      - the default is just less than 2GB which is a practical limit
1657        on many systems
1658    o Compute the non-local term using either KPP vertical diffusivity (=default)
1659       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1660    
1661    checkpoint55h_post
1662    o add verification test "vermix"
1663    o remove all the *_ioinc flags and replace with the single global
1664      outputTypesInclusive flag
1665    o allow to set a vertical profile of vertical diffusivity for T & S
1666    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1667    o useMNC moved from data.mnc to data.pkg
1668    
1669    checkpoint55g_post
1670    o Renaming carbon AD experiments to comply with testreport conventions
1671    o Updating adjoint of Held-Suarez hs94.1x64x5
1672    o Fixing directives for non-ECCO forward_step, after ECCO directives
1673      have been fixed to avoid recomp. of do_oceanic_phys
1674      Works well for global_ocean.90x40x15,
1675      but recomp. issue remains for carbon
1676    o Updating adjoint output for natl_box_adjoint after
1677      pkg/ecco has been modified (see taga c55d_post)
1678    
1679    checkpoint55f_post
1680    o rename to timeave_init_fixed
1681    
1682    checkpoint55e_post
1683    o some delicate re-shuffle of store directives to avoid one
1684      extra call of do_oceanic_physics
1685      affects ecco_the_main_loop.F, do_oceanic_physics.F
1686      checkpoint_lev1_directives.h
1687    o NB: this may break global_ocean adjoint temporarily,
1688      but it is clear how to fix it. Will do later, need this now.
1689    
1690    checkpoint55d_post
1691    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1692    o ecco_cost_weights is modified to 1x1 runs
1693    o modifs to allow observations to be read in as
1694      single file or yearly files
1695    o enable to read exf forcing fields as either
1696      single file or yearly files (flag useExfYearlyFields)
1697    checkpoint55d_pre
1698    
1699    o switch between 2-level and 3-level checkpointing
1700    o add ability of MNC to write local and "partial" (eg. 2D slices where
1701      the full 3D field is never actually stored) arrays to NetCDF files
1702      with the correct (that is, the complete multi-dimensional) set of
1703      array indicies
1704      - used in mom_vecinv() to write the diagFreq output
1705      - tested (demonstrated) in verification/aim.5l_cs
1706    o further mnc-ification
1707      - add verification/lab_sea to the list with mnc setups
1708      - fix undefined mnc v-names in cd_code
1709      - add kpp to mnc output (both snapshot and timeave)
1710    o non-hydrostatic code
1711      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1712        in calc_gw.F
1713      - defaults to viscAh
1714      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1715        friction or Leith) in non-hydrostatic mode, as long as there is
1716        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1717    o pkg/cost
1718      extend simple cost functions to treat time mean quantities
1719      (T,U,V) via cost_accumulate_state from cost_tile
1720    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1721        be 2 times larger than the minimum size the advection scheme requires.
1722        now get a perfect conservation of salt in advect_cs test-exp (updated)
1723    o GGL90 (Gaspar's TKE mixed layer)
1724      - add horizontal diffusion of TKE, requires exchanges in
1725        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1726        default. In OPA there is no horizontal diffusion of TKE but the
1727        mixing coefficients are computed from a horizontal average of TKE of
1728        6 points or so. I think that diffusion has a little more physical
1729        justification.
1730      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1731        was in vain)
1732      - mask tke-variable in ggl90_init
1733    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1734    o fix biharmonic diffusion on CS-grid.
1735    o more obcs stuff
1736      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1737        for reading boundary values. This routine is called from
1738        obcs_prescribe_read
1739      - updated obcs_check
1740      - changed sponge layer relaxation parameter units for days to seconds
1741      - turned off sponge layer by default
1742      - changed argument list of OBCS_CALC to myTime+deltaTclock
1743      - fixed about 35 bugs in obcs_external_fields_load
1744    
1745    checkpoint55c_post
1746    o obcs stuff
1747      - new runtime flags useOBCSprescribe, useOBCSbalance
1748      - re-arranged obcs_calc
1749      - moved exf_getobcs to obcs_prescibe_read
1750        obcs_prescibe_read is called after ORLANSKI stuff
1751        and independent of it (executable can contain all).
1752      - updated obcs_check
1753      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1754        These may be necessary only if tangential velocities are
1755        prescribed at OB, not sure, needs testing.
1756    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1757      which simplifies the calls and passes the ifc check-bounds test
1758    
1759    checkpoint55b_post
1760    o add a 2D scalar, Z location, exchange_2 routine.
1761    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1762      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1763      affects advect_cs results (for the wrong reason): update output.txt
1764    o use a more standard discretization for biharmonic viscosity ;
1765     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1766      affects results of dome set-up: update output.txt
1767    o fix gad_advection.F (CubedSphere part), back to version 1.23
1768    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1769    
1770    checkpoint55a_post
1771    o merged code to
1772      * prescribe/read time-dependent open boundaries
1773        (works in conjunction with exf, cal)
1774      * sponge layer code for open boundaries
1775      * each boundary N/S/E/W now has its own CPP option
1776        (healthy for the adjoint)
1777    
1778    checkpoint55
1779    o up-to-date adjoint of previous breaks
1780      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1781      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1782      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1783      - carbon: * remove tr1-related adjoint verification
1784                * add ptracer as control variable
1785    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1786      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1787    
1788    checkpoint54f_post
1789    o in verification/carbin/ remove experiment related to
1790      ALLOW_PASSIVE_TRACER (array tr1 etc)
1791      code_ad/ input_ad/ results_ad
1792    
1793    o add two new packages
1794      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1795        + subject to optimization (memory)
1796      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1797        + subject to reordering (many GOTOs in the original code)
1798        + so far opps is called for every (i,j) point, and then operates in
1799          the vertical; one may want to reorder the scheme in order operate in
1800          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1801          fields)
1802    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1803      - all verification tests compile and run with linux_ia32_g77
1804      - defaults are compatible with current input files--nothing
1805        should change if you were not previously using MNC
1806      - MNC output has been added in numerous places (eg. timeave)
1807        but there are still a few writes not yet do-able with MNC
1808        (this is in progress)
1809      - flags now allow for either/or/both use of MDSIO and MNC and
1810        documentation will soon follow
1811      - numerous small formatting cleanups for ProTeX
1812    o add version info (via BUILD_INFO.h) to MNC and stdout
1813    
1814    checkpoint54e_post
1815    o add two new packages
1816      - pp81 (Packanowski and Philander, 1981), Richardson number and
1817        stratification dependent mixing
1818      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1819      - these scheme operate in a similar manner as KPP (without ghat, of
1820        course), however there is only one diffusivity that is used for both
1821        temperature and salinity (and passive tracers)ç
1822    o add offline package
1823    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1824      provided by Stephanie Dutkiewicz
1825    o genmake2: add ability to search for C compilers and cleanup test output
1826      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1827    
1828    checkpoint54d_post
1829    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1830    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1831      leading to additional shift by 5 days each year of integration
1832       (i.e. leading to considerable offset over the years)
1833    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1834    o start with no AB and no initial filtering (staggerTimeStep):
1835      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1836    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1837      (external loading & cpl import/export stay in forward_step.F)
1838    o update coupling interface to work with new staggerTimeStep
1839    o change MDSIO ptracers_pickup.
1840    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1841    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1842    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1843    
1844    checkpoint54c_post
1845    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1846      this affects (truncation error) output.txt of test-exp:
1847       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1848    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1849    o change Qnet to always be the net heat flux, (+upward).
1850      affects (truncation error) output of natl_box exp.: updated
1851    o define the max number of passive tracers in PTRACERS_SIZE.h
1852    o start to test mnc routinely in exp0
1853    o add sea-ice loading (sIceLoad) as a new forcing field.
1854    
1855    checkpoint54b_post
1856    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1857       impressive on Altix and Opteron systems)
1858    o diagnostics can now write NetCDF files through the mnc package
1859    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1860    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1861    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1862      affects (truncation error) output of lab_sea & natl_box exp.: updated
1863    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1864    
1865    checkpoint54a_post
1866    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1867    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1868    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1869    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1870      + internal_wave (shift in writing cg2d_ini_res)
1871    checkpoint54a_pre
1872    
1873    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1874      - modified verification/lab_sea and natl_box_adjoint accordingly
1875    
1876    checkpoint54
1877    checkpoint53g_post
1878    o prepare splitting of thermodynamics: store convect.counter in common block
1879    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1880      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1881    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1882    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1883    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1884    o restore adjointability
1885    
1886    checkpoint53f_post
1887    o modifications that affect AIM experiment results (update output.txt):
1888      - no advection of S at top interface Nr (pkg/generic_advdiff)
1889      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1890    o AIM pkg:
1891      - include stability function into surf.Flux derivative relative to Tsurf
1892      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1893    
1894    checkpoint53e_post
1895    o merged cylindrical coord configuration
1896    o added rotating_tank experiment
1897    checkpoint53e_pre
1898    
1899    checkpoint53d_post
1900    o faulks upgraded: re-generate output.txt that have changed:
1901       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1902    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1903    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1904    o added Sadourny discretization of Coriolis
1905      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1906      - re-enabled use of omega3 (useAbsVorticity)
1907    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1908      vector-invariant equations
1909      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1910    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1911      hopefully without new bugs
1912      - still to do: biharmonic friction for non-hydrostatic w
1913    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1914    o regenerated output for global_ocean_ebm (using -ieee)
1915    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1916      of mom_common/
1917      - simple re-arrangement of instructions within computing loop
1918    checkpoint53d_pre
1919    
1920    checkpoint53c_post
1921    o new version of coupler for AIM+thSIce and Ocean models
1922     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1923     - land: change Evaporation of snow
1924     - aim with thSIce: fix bug in snow-precip.
1925    o changes to calc_gw.F
1926     - bug fix for w^2 term near the bottom boundary
1927     - (hopefully) improve the lateral slip boundary condtions for use with
1928        partial/looped cells
1929      - because the bug fix changes two verification experiments anyway (exp5
1930        and plume on slope), change the lateral boundary condition from half slip
1931        to the value of no_slip_sides
1932    o ebm package wasnt quite up to the parallel task. Fixed that.
1933    o Adjoint of EBM package + verification
1934      * TLM OK
1935      * ADM not sufficient accuracy yet (needs further testing)
1936    
1937    checkpoint53b_post
1938    o Commiting new energy balance model to repository
1939      * package is pkg/ebm
1940      * verif. is verification/global_ocean_ebm
1941      * references are in ebm_driver.F
1942    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1943    C        Global thermohaline circulation. Part I:
1944    C        Sensitivity to atmospheric moisture transport.
1945    C        J. Climate 12(1), 71-82
1946    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1947    C        Global thermohaline circulation. Part II:
1948    C        Sensitivity with interactive transport.
1949    C        J. Climate 12(1), 83-91
1950    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1951    C        Destabilization of the thermohaline circulation
1952    C        by atmospheric eddy transports.
1953    C        J. Climate 7(12), 1870-1882
1954    o Will need long integration testing.
1955    checkpoint53b_pre
1956    
1957    o created pkg/mom_common in preparation for variable viscosity code
1958    o renamed and split ini_mnc_io
1959    o pkg/land: only liquid water can diffuse or run-off
1960    o AIM using land: soil wetness availability account for snow
1961    o added printMapIncludesZeros to EEPARMS namelist
1962    
1963    checkpoint53a_post
1964    o restore TAMC compatiility for exf_constants.h
1965      (no usage of _d in .h)
1966    o Additional storing in KPP in an attempt to fix
1967      TAMC problem with adjoint of KPP code.
1968      (no success...)
1969      Identical code works fine with TAF.
1970    o Fixed verification/natl_box_adjoint experiments.
1971      Initial conditions for Experiments 4 and 5 are now
1972      set to "SEAICE_initialHEFF=0", which is more reasonable,
1973      and hence gives results closer to that of Experiment 2.
1974      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1975    
1976    checkpoint53
1977    o stable checkpoint with up to date adjoint
1978      TLM tests only run for 1st grdchk at the moment. Its unclear if
1979      this is a code problem or a problem with resetting code for g_
1980      variables that is being autogenerated wrong.
1981      Otherwise:
1982       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1983       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1984         are both still in chaos following their security messes.
1985    
1986    checkpoint52n_post
1987    o various build (mostly genmake2) changes including:
1988      - ability to build/run more easily within Cygwin and MacOS X
1989      - more complicated Makefiles with a stronger dependence on Gnu Make
1990    o pkg/seaice modifications
1991      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1992        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1993        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1994      - changed proxy for geostrophic velocity and updated
1995        verification/lab_sea/results/* accordingly
1996      - removed ADI dynamic solver from pkg/seaice
1997      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1998        they caused a segmentation fault under certain circumstances
1999      - removed unused field WATR
2000    o bug fix in exf-package:
2001      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2002         now reflect that.
2003    o small fixes in the cal-package:
2004      - set reference date to first of January for the 'model'-calendar
2005      - failing of cal_CheckDate in cal_FullDate now actually results in a
2006        warning
2007    o small modifications in exf-package to increase flexibility:
2008      - change climtempfreeze from a constant to a runtime parameter that
2009        is specified in data.exf_clim (default = -1.9)
2010      - introduce runtime parameter windstressmax (default = 2.0) that is
2011        specified in data.exf
2012    o fix in pkg/thsice:
2013      - update Evap (Tsf changes) to be consistent with Latent heat flux
2014      - maintain snow precipitation unchanged (even if Tsf >=0).
2015     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2016    
2017    checkpoint52m_post
2018    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2019      this does not change any of the results, because myIter=0 in swfrac always
2020      lead to jwtype=2 (the default anyway), but the call makes little sense
2021      as a default
2022    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2023    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2024      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2025    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2026    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2027    o extending useSingleCpuIO option to work with new exch2 I/O format
2028      - old-style, missing-tile I/O is still accessible by defining CPP
2029        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2030    o monitor package can write to NetCDF files and/or STDOUT
2031    o fix re-definition bug in MNC_GRID_INIT_ALL()
2032    o doc/api_reference added
2033      - a framework for building an API Reference Manual using all
2034        the "protex" comments embedded in the code
2035      - see pkg/generic_advdiff, pkg/mnc for examples
2036    o MNC:
2037      - make myThid the last argument for all subroutines
2038      - new default for the grid files: NO halos
2039      - add useMNC and other run-time flags
2040      - separate per-file-group handling of the unlimited dimension
2041      - early initialization of MNC w/ flags read at the eeboot stage
2042        and lookup tables set in initialize_fixed
2043      - write all MNC output to a freshly-created directory
2044    o thermodynamics sea-ice (thsice) is now tested with testreport.
2045    o test exp. advect_cs: use the standard cs32 grid ; update output.
2046    o Added functionality to grdchk:
2047      pick global i,j,k position (or nearest wet) where to perform check.
2048    
2049    checkpoint52l_post
2050    o new land formulation:
2051      a) use ground enthalpy as prognostic variable to ensure exact
2052         energy conservation.
2053      b) account for water temperature and for latent heat of freezing
2054         in all processes (rain, run-off, ground storage)
2055      c) compute surface and ground temperature implicitly.
2056    o aim_v23 modification for new land model:
2057      a) Treat separately land / ocean / sea-ice surface fluxes
2058         to allow implicit computation of land & sea-ice surface temp.
2059      b) add snow precipitation.
2060    checkpoint52l_pre
2061    
2062    o fix problem (when 1 tile is empty) in min/max monitor.
2063    o fix bug in timeAve (u,vZetatave in common block)
2064    o no restoring terms under ice for pkg/seaice
2065    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2066    o bug fix for pkg/seaice pickups
2067    o change MNC call locations and add coordinate attributes
2068    o mask vorticity at the corner ; affects global_ocean.cs output
2069    o fix ini_curvilinear_grid ; test CS experiments with mpi
2070    o aim.5l_cs: modify sea-ice fraction input file ; update output
2071    o exf: Adding simple range check routine for exf fields after read
2072    
2073    checkpoint52k_post
2074    o removed top-level directory "diags"
2075      - we migrated these functions to pkg/timeave a long time ago
2076    o fixed bug introduced in pkg/monitor
2077    o accuracy ctrlprec = 32 insuffient for gradient checks using
2078      averaged fields (I/O via cost_averages)
2079      -> use ctrl.h in active_file*.F to control I/O precision.
2080    o paramter list of CALL ADTHE_MAIN_LOOP
2081    o added initial do_the_model_io to ecco
2082    o set all ...Freq to zero after cost_final
2083      taveFreq, dumpFreq, pChkptFreq
2084    o MAIN and ECCO differentiability restored
2085    
2086    checkpoint52j_post
2087    o fix nchklev in tamc.h for global_ocean...
2088    o Bringing flow and store directives up-to-date
2089    o Really weird thing!
2090      call do_the_model_io from the_main_loop with parameters
2091      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2092      TAF places a faulty re-call of initialise_varia
2093      after cost_final call which should not be there!
2094    checkpoint52j_pre
2095    
2096    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2097      error messages
2098    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2099    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2100      debug output
2101    o modfied mdsio_writefield.F to handle non-global files under exch2
2102    o update AIM Cubed-Sphere exp (aim.5l_cs):
2103      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2104    o update AIM Equatorial Channel exp:
2105      use standard aim_v23 pkg and change the SST fields to be more realistic.
2106    o globalFile now works with exch2
2107    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2108      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2109    o limit timeave output for hi-res integrations
2110    
2111    checkpoint52i_post
2112    o removed CPP_EEOPTIONS.h from verification/*/code
2113    o updated the tiling for global_ocean_pressure
2114    checkpoint52i_pre
2115    
2116    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2117      the old pkg/aim).
2118    
2119    checkpoint52h_pre
2120    o shortened offending lines in exch2_send_rx?.template
2121    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2122    o genmake2: add build & execute test for NetCDF code
2123    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2124      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2125    o added useSingleCPUIO flag to monitor.F and mon_out.F
2126    o added temporary hack for sea-ice dynamics on the cube:
2127      metric terms are ignored and it is assumed that
2128      there is no sea-ice on cube faces 1, 2, 4, and 5.
2129    
2130    checkpoint52f_post
2131    o added exch2 cube routines to pkg/exch2
2132    o modified hs94.cs-32x32x5 to use it
2133    o added new grid files to hs94.cs-32x32x5
2134    checkpoint52f_pre
2135    
2136    checkpoint52e_post
2137    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2138      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2139    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2140      to work with implicit vertical advection and AB ;
2141    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2142    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2143     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2144    checkpoint52e_pre
2145    
2146    o fix bug in impldiff when Nr=1 or Nr=2.
2147    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2148    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2149    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2150      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2151    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2152    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2153    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2154    
2155    checkpoint52d_post
2156    o re-tiled many expts to allow comparison in multi-processor mode
2157      - updated output accordingly
2158      - changed hs94.128x64x5 to use intial T from file rather than use the
2159        random number generator
2160    o add infrastructure in model routines for fizhi and gridalt packages
2161    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2162    o changes to permit hi-res, cubed-sphere, configuration
2163      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2164      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2165      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2166        of surface winds for the cube
2167      (A verification experiment, based on global_ocean.cs32x15, but with
2168       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2169       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2170       complete with example surface forcing files and matlab scripts to look
2171       at the output and compare it with that of global_ocean.cs32x15.)
2172    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2173       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2174       to conform to the common rule.
2175    o check-in the first version of the coupler + interfaces for multi-components
2176       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2177       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2178       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2179       - ocean and atmos. share the same horizontal grid (no interpolation).
2180       - exchanges between component and coupler is done in forward_step
2181    o new verification experiment, cpl_aim+ocn:
2182       coupled ocean - AIM atmosphere on cs32 grid.
2183    
2184    checkpoint52d_pre
2185    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2186    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2187    
2188    checkpoint52c_post
2189    o Fixing OPTIONS files for use of exf:
2190      - ALLOW_ECCO not needed
2191      - ECCO_CPPOPTIONS.h should not be included from
2192        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2193        as has been the case in the past
2194      - All cal/exf related options are currently set in
2195        single header file. Should remain so until we
2196        agree on a consistent new policy.
2197    o Removed all CPP options for cal package.
2198      cal has no more CPP options.
2199    o modified STOREs in GAD_ADVECTION
2200    o corrected key comp. for passkey
2201    
2202    checkpoint52b_post
2203    o new version: "thsice" of thermodynamic sea-ice pkg:
2204     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2205     - modify fluxes but do not change theta directly;
2206     - light cleaning of bulk_force pkg (still needed with thsice).
2207     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2208       + output_thsice.txt to test thsice & bulk_force pkgs.
2209    o put back grid & coriolis monitor output.
2210    checkpoint52b_pre
2211    
2212    o call "do_the_model_io" at the beginning (=> dump initial state)
2213    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2214    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2215      (need info on NUMBER_OF_PTRACERS)
2216    o missing PTRACERS headers in some routines
2217    o default tamc.h in pkg/autodiff supposed to crash
2218      to ensure proper customization
2219    
2220    checkpoint52a_post
2221    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2222      - moved surfaceTendencyTice from pkg/seaice to main code
2223      - subroutine FREEZE_SURFACE now limits only surface temperature
2224        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2225        => new output.txt for global_ocean.cs32x15 & global_with_exf
2226      - keep the old version of FREEZE for backward compatibility;
2227        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2228      - corresponding modifs for TAF directives
2229    o added surface flux output variables to TIMEAVE_STATVARS
2230    o time-averaged output for pkg/ptracers
2231    o fix problem with ECCO-related divided adjoint
2232      snapshot file was missing some ad-variables,
2233      but no warning issued by TAF
2234    
2235    checkpoint52a_pre
2236    o some bug fixes for #undef REAL4_IS_SLOW
2237    
2238    checkpoint52 = ecco_c52_e35
2239    o after testing adjoints of checkpoint51u_post
2240    
2241    checkpoint51u_post
2242    o this is the post-merge tag of the ecco-branch
2243      (needs another clean checkout and re-testing)
2244    o various natl_box_adjoint configs and results
2245      but no input fields
2246    o obcs adjoint not yet merged!
2247    o adding ECCO global 1x1 and 2x2 degree configs
2248    o updated/extended some store directives for seaice
2249    o pkg/ecco now containes ecco-specific part of cost function
2250    o top level routines the_main_loop, forward_step
2251      supersede those in model/src/
2252      previous input data.cost now in data.ecco
2253      (new namelist ecco_cost_nml)
2254    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2255    
2256    checkpoint51t_post
2257    o this is the pre-merge tag of the ecco-branch
2258    
2259    checkpoint51s_post
2260    o cleanup: removed various obsolete #define-s
2261    o pkg/grdchk
2262      - renamed 'ph-grd 3' to 'grad-res'
2263      - merged from ecco-branch
2264        (remaining bug fixes for obcs gradient checks)
2265      - additional high-precision output for testreport
2266        (grep for 'precision_grdchk_result')
2267    
2268    checkpoint51r_post
2269    o cleaned up or removed CPP_OPTIONS.h files
2270    o updated results for some of the tests to reflect the new
2271      optfiles (-ieee: -O0 instead of -O3)
2272    
2273    checkpoint51q_post
2274    o cd_code:
2275      - moved cd_scheme.F -> cd_code_scheme.F
2276      - separate read_checkpoint from cd_code_ini_vars.F
2277      - separated cd_code part from write_checkpoint
2278      - updated AD_SOURCE, generated .flow
2279      - added CD_CODE_VARS.h to the_main_loop
2280      - Moving cd_code specific store dir.s to pkg/cd_code
2281    o ctrl package totally restructured
2282      - pack/unpack now optional and decoupled from
2283        xx_/adxx_ I/O
2284      - ctrl_pack/unpack cleaned
2285        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2286      - confined inclusion of AD_CONFIG.h to where necessary.
2287    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2288    
2289    checkpoint51p_post
2290    o create initial cd_code package
2291      - WARNING: the initialization of fields within packages
2292        is broken because INI_FIELDS (where READ_CHECKPOINT is
2293        called) is called *before* PACKAGES_INIT_VARIABLES.
2294        This seems to be backwards since
2295        1) its important to initially zero the entire field including
2296           the "halo" region
2297        2) zeroing needs to be done *before* reading pickup info
2298           and the pickup call might or might not happen in any
2299           particular run
2300      - this needs an overhaul for R2
2301    o cleanup verification/*/code/GMREDI_OPTIONS.h
2302    o cleanup testreport
2303    
2304    checkpoint51o_post
2305    o bringing AD-related verif's up to date with genmake2
2306      - carbon/
2307      - global_ocean.90x40x15/
2308      - hs.94.1x64x5/
2309      - (front_relax/ )
2310    o (more) consistent directory structure for AD-related verif.'s
2311    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2312    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2313    o bug fix in find_alpha.F for MDJWF:
2314      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2315        change rho -> rho-rhoConst
2316      - replace call find_rho to find_rhonum
2317    o initialisation of rFlx extended to full array (required by TAF)
2318      and shifted to thermodynamics
2319    o removed PTRACERS.h in ptracers routine
2320    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2321    o Correcting initialisations for fVerU, fVerV.
2322    o helping TAF to recognize dependency on kUp for
2323      fVerU, fVerV
2324    o Replacing delZ by delR in pkg/ctrl/
2325    checkpoint51o_pre
2326    
2327    o undid all of cp51 pending some cleanups and discussion
2328    o added the [#include "AD_CONFIG.h"] statement to all files that need
2329       it for adjoint/tl #defines
2330     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2331     o removed tools/genmake since it no longer works
2332    
2333    checkpoint51n_post
2334    o modifications to make FREEZE flux visible to pkg/kpp
2335      - moved surfaceTendencyTice from pkg/seaice to main code
2336      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2337      - subroutine FREEZE now limits only surface temperature
2338        (this means new output.txt for global_ocean.90x40x15,
2339         global_ocean.cs32x15, and global_with_exf)
2340    o added surface flux output variables to TIMEAVE_STATVARS
2341    
2342    checkpoint51n_pre
2343    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2344    o added [#include "AD_CONFIG.h"] to all files that use the following
2345      defines:
2346      - ALLOW_ADJOINT_RUN
2347      - ALLOW_TANGENTLINEAR_RUN
2348      - ALLOW_ECCO_OPTIMIZATION
2349    
2350    checkpoint51m_post
2351    o incorporating changes to get TAMC/TAF working in genmake2
2352      - added new TAMC/TAF targets to the Makefile
2353      - various cleanups related to package handling
2354      - these changes should have no impact on the forward model
2355    
2356    checkpoint51l_post
2357    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2358     - faster algorithm for cal_addtime.F
2359     - higher precision arithmetic, where needed
2360     - pkg/exf *startdate variables changed from calendar date to
2361       model integration time
2362    
2363    checkpoint51l_pre
2364    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2365    o enable to apply restoring on S & T only in a latitude band.
2366    o update output (external_forcing_surf modif. change truncation errors)
2367       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2368    
2369    checkpoint51k_post
2370    o change default to: useNHMTerms=.FALSE.
2371     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2372       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2373     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2374        exp1, ideal_2D_oce
2375     - change data file of oceanic exp (leave the results unchanged for now)
2376       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2377    o set gravitySign automatically according to the vertical coordinate used
2378      (and change sign: back to "logical" value: +1 when R increases downward)
2379    o added an include barrier to the default CPP_OPTIONS.h and
2380      removed the #include "PACKAGES_CONFIG.h" from it
2381    o fix a bug in mom_fluxform (from chk51j_post)
2382    
2383    checkpoint51j_post
2384    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2385    o adjusted some flow directives (dynamics, thermodynamics)
2386    o added cubed-sphere case to test cost function
2387    o heckpoint_lev?_directives.h now include
2388      pkg-specific directives, whenever those are enabled.
2389    o Moving pkg-specific flow directives to corresponding pkg
2390      Moving pkg-specific differentiation list to corresponding pkg
2391      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2392      ---> conventions are
2393           - pkg_ad.flow
2394           - pkg_ad_diff.list
2395           - pkg_ad_check_lev?_dir.h
2396    
2397    checkpoint51i_post
2398    o merge of the branch-genmake2
2399      - knowingly breaks the older genmake
2400      - automatic generation of all ALLOW_${PKG_NAME} defines
2401      - new testreport supersedes older testscript
2402    o large number of package inclusion and header cleanups
2403    checkpoint51i_pre
2404    
2405    o new output for adjoin of global ocean vector invariant
2406    o fix for checkpoint of thermodynamic seaice and bulk_force
2407    o Steph gchem various cleanups
2408    
2409    checkpoint 51h_pre
2410    o fixed some single quotes
2411    o modify gchem pkg to be more versatile
2412    o modifications to clean up dic pkg
2413    o add pkg/cfc
2414    
2415    checkpoint51g_post
2416    o provide links for ARPACK and ADM*TLM
2417    o start removing verification/vero/
2418    o update AD-related stuff
2419      (in particular some IF-statements in model/src/ routines)
2420    o adding to verification/global_ocean.90x40x15/ adjoint of
2421      vector invariant setup
2422    
2423    checkpoint51f_post
2424    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2425    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2426      of tracer Green's fucntions for ocean inversion project.
2427    
2428    checkpoint51f_pre
2429    o Added on-the-fly spatial interpolation capability
2430        "USE_EXF_INTERPOLATION" to pkg/exf.
2431      - This is a temporary Cartesian-grid hack until
2432        the super-duper ESMF coupler becomes available.
2433      - See verification/global_with_exf/README for usage example.
2434      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2435        flags and modified pkg/seaice accordingly.
2436    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2437        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2438        non-local transport term.
2439    
2440    checkpoint51e_post
2441    o pkg/mom_vecinv:
2442      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2443      - add time-ave diagnostic of vorticity advection.
2444    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2445    o atmospheric geopotential: - include water vapor effect;
2446                                - use p^kappa in p* scaling.
2447    o land pkg: read initial state from files.
2448    o AIM : add stratospheric drag in the upper level
2449    
2450    checkpoint51d_post
2451    o change function ILNBLNK (=> last non-blank char.) to return zero
2452      (instead of the string length) when the string. char is empty
2453    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2454    o modif's to restore TAMC compatibility
2455      - avoid "_d" constructs in PARAMETER declarations
2456      - avoid interrupting lines by comment lines
2457    o Use cluster local disks for purely local I/O
2458      vs. globally visible disks needed for ctrl stuff
2459      (merged from ecco-branch)
2460      - new active_file_loc... and mdsio_..._loc routines
2461      - affected packages: autodiff, ctrl, grdchk, mdsio
2462    
2463    checkpoint51c_post
2464    o introducing integer flag debugLevel
2465      - debLevZero: suppress all output
2466      - debLevA: standard
2467      - debLevB: equivalent to current debugMode=.TRUE.
2468    o introducing pathname variable mdsioLocalDir for mdsio
2469      that can be specified at runtime
2470      (relevant for cluster I/O to local disk)
2471    `
2472    >>>checkpoint51b_post
2473    adjoint of ptracers
2474    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2475    o extended state in checkpoint_lev?, etc.
2476    o alternative ctrl/cost with tr1 or ptracer
2477    o new comlev1_bibj_ptracers
2478    o new ptracers.flow
2479    o made ptracers_forcing same as external_forcing_s
2480    o added verification for adjoint with ptracers
2481      - adm. grdchk fail so far
2482      - tlm. grdchk OK
2483      - checked tapelev/comlev recomputations: OK
2484    <<<checkpoint51b_pre
2485    
2486    checkpoint51a_post
2487    o added code for biogeochemistry package
2488      - new pkgs: dic, gchem
2489      - new subroutine in ptracers
2490    o modify code for biogeo packages
2491      - in model/src and pkg/ptracers
2492    
2493    checkpoint51
2494    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2495      - autodiff, ctrl, exf, grdchk, seaice
2496      kept separate packages
2497      - cost, ecco, obcs
2498    o updating verification/internal_wave, verification/lab_sea
2499      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2500    
2501    checkpoint50i_post
2502    o Preparing next differentiable checkpoint and sync
2503      of MAIN vs. ecco-branch
2504      - 1st step: this one is differentiable
2505      - 2nd step: next(! not this) checkpoint will have updated packages
2506                  from ecco-branch)
2507    
2508    checkpoint50h_post
2509    o new package "land": provide surface BC for AIM.
2510    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2511    o AIM: use true log-P extrapolation for near surface temp (= as in
2512        F.Molteni paper) ; update aim.5l_cs output.
2513    o New variable in PARM03 for more flexible pickups
2514    o somewhat cleaned package initialisation sequence for
2515      ctrl/ cost/ ecco/ in packages_... routines
2516    
2517    checkpoint50g_post
2518    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2519      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2520      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2521        made the default because of faster convergence than ADI
2522    
2523    checkpoint50f_post
2524    o exf totally restructured
2525      - replaced all exf_set_ routines by one generic exf_set_gen.F
2526        and made sure it's still differentiable
2527      - split exf_getffields.F into new exf_bulkformulae.F
2528      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2529      - updated adjoint/makefile and relevant verif. accordingly
2530    
2531    checkpoint50f_pre
2532     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2533          + change Evap over land. (update aim.5l_cs output)
2534     o added missing .cvsignores and made uniform across expts
2535     o changed configuration of tidal_basin_2d expt
2536     o added pkg/debug functions for tracing code in fatal crashes
2537     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2538     o new fn in pkg/monitor to stop model if solution grows too big
2539     o removed lots of single quotes from comments
2540    
2541    checkpoint50e_post
2542    o make KPP work with PTRACERS
2543     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2544       nearly a copy of kpp_transport_s
2545     - there is no analogue to SurfaceTendencyS, so I have to use
2546       gPtr(of the surface layer) instead
2547    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2548    checkpoint50e_pre
2549    
2550    checkpoint50d_post
2551    o change kpp output from multiple-record state files to single-record state
2552      files analogous to write_state.F
2553    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2554      analogous to the cg2d-related output.
2555    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2556      so that writing to internal file fn (with length 512) fails.
2557    checkpoint50d_pre
2558    
2559    checkpoint50c_post
2560    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2561    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2562    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2563    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2564    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2565    
2566    checkpoint50c_pre
2567    Merging from release1_p13:
2568    o bug fix for pkg/seaice dynamic solver
2569    o Added SEAICE_initialHEFF to pkg/seaice
2570    
2571    checkpoint50b_post
2572    o store u*,v* in gU,V instead of in guNm1,gvNm1
2573    o in order to put the momForcing out of the Adams-Bashforth:
2574      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2575      to timestep.F
2576    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2577    o re-generate output for highly sensitive test-exp:
2578       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2579    
2580    checkpoint50b_pre
2581    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2582    o corrected CPP option mismatch in exf_Bulk... functions for case
2583      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2584    
2585    checkpoint50a_post
2586    o Bug fix for merging between c50 and KPP.
2587      ikey was passed from thermodynamics to kpp_calc via
2588      common block rather than being recomputed in kpp_calc,
2589      in contradiction with new key itdkey.
2590      New key ikppkey created, and tamc.h headers updated.
2591    
2592    checkpoint50
2593    - 2nd step of merge with ecco-branch:
2594      merge changes in ecco-branch back into main trunk
2595    - bug fix in find_alpha
2596    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2597    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2598    - merged some sliced AD support routines
2599    
2600    checkpoint49
2601    merged from ecco-branch:
2602    o exf:
2603      - Enable initialisation of forcing fields to constant
2604        (runtime) values.
2605      - in exf_getffields.F
2606        Reduce i-/j-loop to interior domain, discarding overlaps.
2607        That also fixes wrong TAF-key computations for key_1, key_2
2608        with bulf formulae.
2609      - exf_init.F modify #ifdef for exf_init_evap
2610      - exf_getffieldrec.F, ctrl_getrec.F
2611        The following INT-usages are not safe:
2612          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2613          fldcount = int(fldsecs/fldperiod) + 1
2614        and were modified.
2615    o autodiff: checkpoint_lev...
2616      - updated storing for bulk formulae (some arrays were missing)
2617      - added state for seaice package
2618      - synchronized with main branch
2619    o DIVA:
2620      Modif.s in
2621      - the_main_loop.F
2622      - the_model_main.F
2623      and added cost_final_restore.F cost_final_store.F
2624      o With these changes, it is possible to fully separate
2625        the first forward run to compute the cost function (mdthe_main_loop)
2626        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2627        into separate model executions.
2628        This enables better tuning of DIVA to given queue sizes.
2629      o Loss of cost function value in consecutive DIVA runs is
2630        fixed by storing to 'costfinal' file.
2631      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2632        beginning/end of adjoint integration is accounted for.
2633      The current changes apply to TAF-1.4.26.
2634      TAF has one remaining bug, requiring one manual change
2635      (see MITgcm manual).
2636    o cal: synchronized between MAIN and ecco-branch
2637    
2638    checkpoint48i_post
2639    o Changes to restore differentiability of code w.r.t. previous tag
2640      (mostly adding new routines to make list and replacing
2641      pressure by totPhiHyd).
2642    o Updated and merged grdchk package
2643      - has both ADM and TLM checks
2644      - works for single- and multi-proc.
2645      - output cleaned
2646      - worked successfully for parallel DIVA
2647    o genmake:
2648      - Adding -platform=SP4
2649      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2650    o Modif. for DIVA:
2651      ctrl_unpack should not be called in intermediate DIVA interval.
2652      (similar thing would apply for active files such as
2653      tbar, sbar, psbar, which should not be reinitialised;
2654      only relevant for ecco-branch)
2655    
2656    checkpoint48h_post
2657    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2658    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2659    o Added SEAICE_initialHEFF to pkg/seaice
2660    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2661    
2662    checkpoint48g_post
2663    --- EOS:
2664    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2665      store total Potential in totPhyHyd for diagnostics & EOS.
2666    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2667    --- Pressure/geopotential gradient:
2668    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2669    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2670      ( changes results of global_ocean_pressure )
2671    o NLFS + z-coord.: add eta*Rho' contribution.
2672    o accurate phiHyd when using interface-W at the middle between 2 centers
2673     ( changes results of ideal_2D_oce )
2674    o includes r* 2nd term in potential gradient.
2675    
2676    checkpoint48f_post
2677    Merging from release1_p12:
2678    o Modifications for using pkg/exf with pkg/seaice
2679      - improved description of the various forcing configurations
2680      - added basic radiation bulk formulae to pkg/exf
2681      - units/sign fix for evap computation in exf_getffields.F
2682      - updated verification/global_with_exf/results/output.txt
2683    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2684      (SBO) core products, including oceanic mass, center-of-mass,
2685      angular, and bottom pressure (see pkg/sbo/README.sbo).
2686    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2687      to avoid negative values in shallow regions.
2688      - updated verification/natl_box/results/output.txt
2689      - updated verification/lab_sea/results/output.txt
2690    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2691    o Added useSingleCpuIO option (see PARAMS.h).
2692    o Updated useSingleCpuIO option in mdsio_writefield.F to
2693      work with multi-field files, e.g., for single-file pickup.
2694    o pkg/seaice:
2695      - bug fix in growth.F: QNET for no shortwave case
2696      - added HeffFile for specifying initial sea-ice thickness
2697      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2698    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2699      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2700    o pkg/seaice:
2701      - adjoint-friendly modifications
2702      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2703    
2704    checkpoint48e_post
2705    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2706    o dynamics: change definition of computational domain & adapt mom_fluxform
2707      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2708    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2709        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2710        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2711        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2712        inverted_barometer solid-body.cs-32x32x1
2713      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2714    
2715    checkpoint48d_post
2716    o in preparation for r*:
2717     a) use pre-computed gradient of hydrostatic potential:
2718        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2719     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2720        => affects results of glob_oce_pressure (different truncation error)  
2721      update output.txt of ideal_2D_oce & global_ocean_pressure
2722    
2723    checkpoint48d_pre
2724    o in preparation for r*:
2725      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2726      pass the 2 comp. of the grad. as arguments to momentum S/R.
2727      but for the moment, only used if it does not change the results.
2728    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2729    
2730    checkpoint48c_post
2731    Modifications in treatment of initial flux forcing controls
2732    to avoid extra storing of flux fields.
2733    
2734    checkpoint48c_pre
2735    o Added tidal_basin_2d experiment (currently 1D!)
2736    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2737    
2738    checkpoint48b_post
2739    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2740     (modification to pressure gradient not yet implemented)
2741    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2742      (for U & V) that are used for vertical advection of momentum.
2743    
2744    checkpoint48a_post
2745    o In preparation for r*, use temp. array to compute vertical transport
2746       in flux-form momentum pkg. => change results of few test-exp.
2747      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2748                        lab_sea, natl_box & plume_on_slope
2749    
2750    checkpoint48
2751    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2752    
2753    checkpoint47j_post
2754    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2755    o moved adexch from forward_step to addummy_in_stepping
2756    o added exch in ctrl_map_...
2757    o aveFreq.=0. at end of cost_final to avoid overwrite in
2758      reverse checkpointing loop
2759    o Yet more changes in gmredi:
2760      * adgmredi_calc_tensor
2761        avoiding all recomputation of gmredi_slope_limit
2762      * adgmredi_x/y/rtransport
2763        added flag for excessive storing to avoid recomp. of
2764        u/v/rtans, dTdx/y/z
2765        -> this is not really necessary and very memory-consuming
2766      * adgmredi_slope_psi:
2767        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2768      * gmredi_slope_limit
2769        re-activated full calculation of taperfct for case 'ac02'
2770    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2771    
2772    checkpoint47i_post
2773    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2774    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2775      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2776    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2777    o gmredi: fix few bugs.
2778    
2779    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2780    This will be a good checkpoint to plug into the ecco-branch.
2781    o few modif.'s to get latest version adjointed
2782      (mainly kick out code in ini_linear_phisurf)
2783    o modif's to run adjoint with exactConserv
2784    o case GM_BOLUS_ADVEC should be cleaned
2785      S/R gmredi_slope_psi should be cleaned
2786    o verification/carbon now has exactConserv=.TRUE.
2787    
2788    checkpoint47g_post
2789    o time-average AIM output: becomes independent from statvars time-average
2790      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2791    o After TAF bug fix:
2792      Tested adjoint of gmredi package.
2793      Tests were done with checkpoint47 rather than with latest
2794      checkpoint47f_post since the latter is broken for the adjoint
2795      verification/carbon/ contains both ADM and TLM gradient checks.
2796    Here they are, before they get changed/lost/stolen.
2797    Mostly modif.'s to fix numerical sensitivities.
2798    Gradient checks OK for
2799    - GM_taper_scheme:
2800      * clipping
2801      * ac02
2802      * linear
2803      * glw91
2804      * dm95
2805      * ldd97
2806    - GMREDI_OPTIONS:
2807      * GM_VISBECK_VARIABLE_K
2808      * GM_NON_UNITY_DIAGONAL
2809      * GM_EXTRA_DIAGONAL
2810      * GM_BOLUS_ADVEC
2811    in conjunction with data.gmredi parameters to be checked in
2812    in a few minutes under verification/carbon/code/
2813    
2814    checkpoint47f_post
2815    Merging from release1_p10:
2816    o modifications for using pkg/exf with pkg/seaice
2817      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2818        and SEAICE_EXTERNAL_FLUXES
2819      - pkg/exf CPP options EXF_READ_EVAP and
2820        EXF_NO_BULK_COMPUTATIONS
2821      - usage examples are Experiments 8 and 9 in
2822        verification/lab_sea/README
2823      - verification/lab_sea default experiment now uses
2824        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2825    
2826    checkpoint47e_post
2827    o created a tag prior to creating a branch
2828    
2829    checkpoint47d_post
2830    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2831      at the bottom boundary had an erroneous half slip boundary condition
2832    o added bottom drag and no slip boundary condition capabilities to
2833      oceanic pressure coordinates code
2834    o added new verification experiment global_ocean_pressure, this experiment is
2835      also described in the tutorial section of the manual
2836    checkpoint47d_pre
2837    
2838    checkpoint47c_post
2839    o Added a verification experiment for a global cubed-sphere ocean run
2840      -  verification/global_ocean.cubed32x32x30
2841      -  uses pkg/therm_seaice and pkg/bulk_forcing
2842    
2843    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2844    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2845      when using P-coordinate; only implemented for atmospheric config.
2846    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2847      NOTES: requires option NONLIN_FRSURF to be "#define".
2848    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2849    
2850    checkpoint47b_post
2851    Merging from release1_p9:
2852    o pkg/seaice
2853      - removed GOTO's and added taf directives
2854      - double precision constants to reduce the g77 (Linux)
2855        to F77 (SGI) differences reported in release1_p8
2856    o tools/genmake
2857      - added SGI options
2858    o verification/testscript
2859      - updated to that of checkpoint47a_post
2860    o verification/global_ocean.90x40x15/input/eedata
2861      - modified for SGI f77 compatibility
2862    o verification/lab_sea
2863      - added description of sea-ice model
2864      - added missing matlab routines
2865      - added test of thermodynamics parallelization
2866    
2867    checkpoint47a_post
2868    o new pkg: aim_v23
2869     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2870       for now, keep the same surface forcing as before.
2871     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2872     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2873     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2874    o add diagnostic of surface correction term in monitor output
2875    
2876    o bulk_force and therm_seaice
2877    - Two packages:  bulk_force (Bulk forcing)
2878      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2879    - Earlier integration from Stephaine Dutkiewicz
2880      and Patrick Heimbach.
2881    - Two ifdef statements for compile time,
2882       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2883    
2884    checkpoint47
2885    differentiable version of checkpoint46n_post
2886    o bug fix in quasihydrostaticterms
2887    o * "clean" adjoint code (in terms of extensive recomputations)
2888        can now be obtained for all GMREDI options (i.e. for
2889        - GM_VISBECK_VARIABLE_K
2890        - GM_NON_UNITY_DIAGONAL
2891        - GM_EXTRA_DIAGONAL
2892        - GM_BOLUS_ADVEC )
2893      * However, wrong gradient check problem remains unsolved.
2894      * New CPP options have been introduced for different
2895        tapering schemes
2896    o external_fields_load now part of differentiation list
2897    o pressure needs multiple storing;
2898      would be nice to have store_pressure at beginning or
2899      end of forward_step, e.g. by having phiHyd global (5-dim.)
2900      (NB: pressure is needed for certain cases in find_rho,
2901      which is also invoked through convective_adjustment).
2902    o recomputations in find_rho for cases
2903     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2904    o #define ATMOSPHERIC_LOADING should be differentiable
2905    o ini_forcing shifted to begining of initialise_varia
2906    o Incorporating QNVS line search routines into MITgcm
2907      (this is separate code, and therefore not under pkg)
2908      lsopt/, optim/
2909    o Updated verification/carbon/
2910      - #define GM_VISBECK_VARIABLE_K
2911      - GM_taper_scheme    = 'ldd97'    
2912    
2913    checkpoint46n_post
2914    Merging from release1_p8:
2915    o verification/natl_box:
2916      updating new external_fields_load routine
2917    o New package: pkg/seaice
2918      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2919      The sea-ice code is based on Hibler (1979-1980).
2920      Two sea-ice dynamic solvers, ADI and LSR, are included.
2921      In addition to computing prognostic sea-ice variables and diagnosing
2922      the forcing/external data fields that drive the ocean model,
2923      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2924      The implied surface heat flux is then stored in variable
2925      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2926      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2927      non-local transport term.  Because this call precedes model
2928      thermodynamics, temperature under sea-ice may not be "exactly" at
2929      the freezing point by the time theta is dumped or time-averaged.
2930      N.B.: fairly large differences in accuracy occur across
2931            different platforms/compilers; comparison between
2932            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2933            generated output gives:
2934       T           S           U           V
2935      C D M    c        m  s        m  s        m  s        m  s
2936      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2937      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2938      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2939    
2940      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2941    o GAD:
2942      - generated new common blocks to account for call of
2943        same gad routines with differing traceridentities
2944        (needed to modify tracerIdentity indices in GAD.h)
2945      - generated separate common blocks for case useCubedSphereExchange
2946        (Department of Futurology)
2947      - parameter lists to gmredi_?transport: added tracerIdentity
2948      - added new key indices to tamc.h
2949    o external_fields_load:
2950      - added this routine to TAF list
2951      - needed to make some common blocks global and additional storing
2952        along the same lines as exf package (checkpoint_lev?_directives.h)
2953    o exf:
2954      updated external forcing package
2955      - bug fixes carried over from ecco-branch
2956        (missing OBCS_OPTIONS.h in two routines)
2957      - enable easy to use "no forcing".
2958      - added exf I/O for atmospheric loading
2959      - added exf I/O for runoff data
2960      - transfered scaling between exf <-> MITgcm to exf namelist
2961    o Adding new verification experiment global_with_exf.
2962      This verification experiment is almost identical to the
2963      global_ocean.90x40x15 experiment, except that it uses
2964      the exf (and cal) package instead of the
2965      external_fields_load routine (cf README file).
2966    
2967    checkpoint46m_post
2968    o modified testscript to return -- when there are no lines of "%MON" output
2969    o added new flag "quasiHydrostatic" for QH mode
2970      and new routine quasihydrostaticterms()
2971    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2972      New routine: mom_u_coriolis_nh()
2973    o fixed sign of non-hydrostatic metric terms in u and v equations.
2974      Depend on correct sign of gravitySign.
2975    o added work.pc* to .cvsignore in aim directories using ifc
2976    o introduced flag for controllin non-hydrostatic metric terms
2977    o removed gravitySign from PARM04
2978    o switched to g77/ifc from pgf77 in aim experiments
2979    
2980    checkpoint46l_post
2981    o made convective adjustment work with pressure coordinates:
2982     - changed the direction of k-loop in convective_adjustment.F for the
2983       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
2984     - adjusted the reference pressure k-index in convective_adjustment.F
2985     - adjusted the convection condition in convect.F (in analogy to
2986       calc_ivdc.F)
2987     - convective_adjustment no longer computes anything on the halos
2988     - removed the warnings about negative salinity from find_rho.F and
2989       find_alpha.F; instead the new routine look_for_neg_salinity, called
2990       at the beginning of find_rho, find_alpha, and find_beta, does a
2991       check of the entire slice, if CPP-option
2992       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
2993    checkpoint46l_pre
2994    
2995    checkpoint46k_post
2996    o fixed the verification/global_ocean.90x40x15 experiment:
2997     - new bathymetry (the world according to A., JMC, and M.)
2998     - new initial fields and forcing fields (*.bin files)
2999     - new POLY3.COEFFS (for the next release one should switch to a full
3000       equation of state: JMD95P or MDJWF)
3001     - fixed several errors and redundancies in the data file
3002     - experiment uses looped cells
3003     - added matlab directory with diagnostic scripts for plotting of output
3004    
3005    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
3006     - read AIM physics parameters from a file (data.aimphys)
3007     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
3008    
3009    checkpoint46j_post
3010    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
3011    o move wVel computation at the end of the time step, in S/R integr_continuity
3012    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
3013    o update timeave pkg for wVel diagnostic.
3014    checkpoint46j_pre
3015    
3016    checkpoint46i_post
3017    o Clean up AIM package (and keep the results unchanged):
3018      include CPP_OPTION and use IMPLICT NONE in all routines ;
3019      declare all the variables _RL ; use _d 0 for all numerical constants.
3020      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
3021    
3022    checkpoint46h_post
3023    o cleaned up the use of rhoNil and rhoConst.
3024      - rhoNil should only appear in the LINEAR equation of state, everywhere
3025        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
3026        and the dynamical equations are all divided by rhoConst
3027    o introduced new parameter rhoConstFresh, a reference density of fresh
3028      water, to remove the fresh water flux's dependence on rhoNil. The default
3029      value is 999.8 kg/m^3
3030    o cleanup up external_forcing.F and external_forcing_surf.F
3031      - can now be used by both OCEANIC and OCEANICP
3032    checkpoint46h_pre
3033    
3034     Added code to convert surface volume flux (fresh water) into
3035     a mass flux when using P coordinates in the ocean (OCEANICP).
3036     Note: It assumes you have set rho0=rhoConst=density of fresh water.
3037    
3038    checkpoint46g_post
3039    o Include a new diagnostic variable phiHydLow for the ocean model
3040      - in z-coordinates, it is the bottom pressure anomaly
3041      - in p-coordinates, it is the sea surface elevation
3042      - in both cases, these variable have global drift, reflecting the mass
3043        drift in z-coordinates and the volume drift in p-coordinates
3044      - included time averaging for phiHydLow, be aware of the drift!
3045    o depth-dependent computation of Bo_surf for pressure coordinates
3046      in the ocean (buoyancyRelation='OCEANICP')
3047      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
3048        Theta, Salinity, and Pressure in the parameter list. This routine is
3049        presently contained in find_rho.F. This routine does not give the
3050        correct density for 'POLY3', which would be a z-dependent reference
3051        density.
3052    o cleaned up find_rho
3053      - removed obsolete 'eqn' from the parameter list.
3054    o added two new verification experiments: gop and goz
3055      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
3056    checkpoint46g_pre
3057    
3058    checkpoint46f_post
3059    o Enable tangent linear (forward mode) gradient checks:
3060      - extended active file handling to g_... files
3061      - added TANGENT_SIMULATION to theSimulationMode
3062      - extended grdchk package accordingly
3063    o added tangent linear setup in verification/carbon/code_ftl
3064    o added adjoint setup in verification/front_relax/code_ad
3065    
3066    checkpoint46e_post
3067    o Added new equation of state -> MDJWF
3068      - EOS of McDougall et al., 2002, JAOT, submitted
3069      - caveat: the equation of state is only valid for a smaller (more
3070        realistic?) range of values than JMD95P/Z and UNESCO
3071      - added masks to the calculation of pressure in store_pressure
3072      - added more check values for density in check_eos (ini_eos.F), some of
3073        the old check values are out of the range of the MDJWF-eos, so don't
3074        expect perfect matches for those
3075    checkpoint46e_pre
3076    
3077    checkpoint46d_post
3078    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
3079      'OCEANICP', also initialised field pressure correctly in ini_eos in the
3080      case of pressure coordinates. eosType='JMD95Z' in
3081      combination with buoyancyRelation='OCEANICP' now causes an error.
3082    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3083      in find_alpha/beta.
3084    checkpoint46d_pre
3085    
3086    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3087      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
3088    
3089    checkpoint46c_post
3090    o Changes necessary for ocean in p-coordinates
3091     -  Added new buoyancy relation = 'OCEANICP'
3092     -  Added new parameters = gravitySign (this used to be contained inside
3093        the factor dRdZ which I added when we first switched to R coordinates).
3094     X GM/Redi is not compatible (yet)
3095     X bottom drag and no-slip need to be debugged.
3096    checkpoint46c_pre
3097    
3098    checkpoint46b_post
3099    o Added new equation of state -> JMD95Z and JMD95P
3100      - EOS of Jackett and McDougall, 1995, JAOT
3101      - moved all EOS parameters into EOS.h
3102      - new routines ini_eos.F, store_pressure.F
3103    o Added UNESCO EOS, but not recommended because it requires
3104      in-situ temperature (see JMD95)
3105    o Modified formatting for knudsen2.f in utils/knudsen2 and added
3106      unesco.f to be used with POLY3
3107    checkpoint46b_pre
3108    
3109    checkpoint46a_post
3110    o Added (atmospheric) pressure loading
3111      - new field in FFIELDS.h, etc...
3112      - new cpp flag ATMOSPHERIC_LOADING
3113    o Changed hFacC to _hFacC in calc_phi_hyd.F
3114    o Added SHORTWAVE_HEATING to some files for consistency
3115    checkpoint46a_pre
3116    
3117    checkpoint46
3118    further merges from release1_p5
3119    o new ctrl package
3120      - adopted from ECCO environment to enable optimization
3121      - added Eliassen Palm fluxes to controls
3122    o added Eliassen Palm flux controls to gradient check package
3123    o cost package
3124      - Compatible with new ctrl package
3125      - added Eliassen Palm cost hooks
3126      - modif's of existing cost functions
3127    o Adjoint-related bug fixes in kpp:
3128      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
3129      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
3130    o autodiff package
3131      - flow directives:
3132        + new for S/R do_the_model_io
3133        + enhanced for S/R checkpoint
3134        + new gmredi.flow
3135      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
3136        disable adcommon.h/g_common.h by default.
3137      - fixed problem for adjoint of global_max
3138    o modified verification/carbon/
3139    o New setup for adjoint of global_ocean
3140    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
3141    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
3142    o incorporated hooks for sponge layer code (external_forcing.F)
3143    
3144    checkpoint45d_post
3145    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
3146    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
3147      (affects plume_on_slope "cg2d" output)
3148    o add new parameter deltaTfreesurf for free-surface time stepping
3149    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
3150    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
3151    o change phiMin in exp1 (to agree with documentation)
3152    o add new flags:
3153     - T,S forcing inside/outside Adams-Bashforth
3154     - turn off temp,salt advection and/or forcing
3155     - for each tracer, define internal flag for multiDimAdvection & A-B
3156    o monitor: change definition of KE to check conservation of Energy
3157    
3158    checkpoint45c_post
3159    o Removed f90 comments ("!")
3160    o Modified initialisations to enable exf package for MITgcm
3161      (without invoking ECCO_PACKAGE).
3162    o modifications to gradient check package (Martin Losch)
3163      - enable centered differences
3164      - modified format of standard output
3165    
3166    checkpoint45b_post
3167    o cleaned exchange calls in cg2d
3168    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
3169    o included CPP option SINGLE_LAYER_MODE in thermodynamics
3170      to configure barotropic setup (Martin Losch)
3171    o moved some initialisations within bi,bj loop in dynamics
3172      (TAF flow dependency)
3173    o in initialise_varia, moved call packages_init_variables
3174      before convective_adjustment_init
3175      (corresponding adjustment of TAF tape initialisation).
3176    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
3177    
3178    checkpoint45a_post
3179    o compute Rho over the whole domain (extend iMin,jMin indices)
3180    o specific exchange for X-slice domain (case Ny=1)
3181    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
3182    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
3183    
3184    checkpoint44h_post = checkpoint45
3185    o Fix to restore differentiability:
3186      place at which packages_init_variables is called in
3187      initialise_varia is crucial for reverse control flow.
3188    o modifications in GMRedi to enable stable adjoint
3189      (corresponding modif's in thermodynamics, dynamics)
3190    o added missing hook for sponge layer code in external_forcing
3191    o modified test cost functions
3192    o storing in gad_advection (plus removal of write(0,*)!
3193    o missing headers TR1.h added in convective_adjustment routines
3194    o errorMessageUnit set non-equal zero in eeboot
3195      (conflict on some platforms, e.g. IBM SP3)
3196    o modified carbon verif.
3197    
3198    checkpoint44h_pre
3199    o vertical grid option: allow to put the Interface at the middle between
3200      2 cell-centers ; replace delZ in pkg/kpp by drF.
3201    o GM Advective form: Tracers are advected using the residual transport (=
3202      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
3203    
3204    checkpoint44g_post
3205    o fix surface correction term in multiDimAdvection (affects plume_on_slope
3206      results) ; ifdef missing in thermodynamics.F
3207    
3208    checkpoint44f_pre,checkpoint44f_post
3209    o added PTRACERS package
3210      This allows an arbitrary number of passive tracers to be integrated
3211      forward simultaneously with the dynamicaly model.
3212      + Implemented so far:
3213        - basic forward algorithm (time-stepping, advection, diffusion, convection)
3214        - I/O and checkpointing
3215        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
3216      + Not implemented so far:
3217        - KPP
3218        - OBCS
3219      + No specific example supplied (yet) but global_ocean.90x40x15 has the
3220        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
3221        line in data.pkg.
3222      + This package is disabled by default since it increases storage.
3223    
3224    
3225    o testscript: added -cleanup option
3226    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
3227                 b) enable to filter 2D fields.
3228    
3229    checkpoint44e_pre,post
3230    o re-wrote convective adjustment to use pre-calculated weights
3231      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
3232      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
3233      Original calls to convect() still in place.
3234    
3235    chkpt44d_pre,post
3236    o added missing EXCLUDE_MONITOR flags
3237    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
3238      (incompatible typ in MIN/MAX expressions caused problems
3239      on IBM SP3)
3240    o in genmake added variable MAKEDEPEND
3241      plus resetting for case SunOS
3242    o added timer_stats.c routine for IBM SP3
3243    o removed variables in dynamics
3244    !!! I forgot to create tag chkpt44d_pre !!!
3245    !!! But chkpt44d_pre = chkpt44c_post    !!!
3246    
3247    o real fresh water flux implemented with non-linear free-surface.
3248    
3249    chkpt44c_pre,post
3250    o few fix (mask in shap_s2, EmPmR in external_field_load,
3251      USE_NATURAL_BCS in solve_for_P);
3252    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
3253    
3254    checkpoint44b_pre/_post
3255    o merge of relevant stuff from the ecco-branch:
3256      - genmake: removed $S64 overwrite for case SunOS
3257      - pkg/exf: update and corrections for field swapping and obcs
3258      - pkg/ecco: parameter lists for the_model_main, the_main_loop
3259                  harmonized between ECCO and MITgcm
3260      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
3261                      updated checkpointing_lev... lists for obcs
3262      - model/src: minor changes in forward_step, plot_field
3263                   added directive for divided adjoint in the_main_loop
3264      - pkg/mdsio: added mdsio_gl_slice
3265    
3266    o check parameters & config (chkpt44a_pre,post)
3267    o OBC and NonLin_FrSurf.
3268    
3269    checkpoint44
3270    o fix bug in mom_vi_del2uv
3271    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
3272    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
3273    o update AIM experiments (NCEP input files)
3274    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
3275    o added some stuff for AD
3276    
3277    checkpoint43
3278    o added two new advection tests
3279    o added global 4x4 degree ocean test
3280    o added test of H&S94 with free surface on cube
3281    o some final mods for gradient check, adjoint,...
3282    
3283    checkpoint42
3284      Fixed AD-related problems:
3285    o Store directives up-to-date with re-arranged Adams-Bashforth
3286      (mainly thermodynamics.F)
3287    o New store directives for multi-dim. advection schemes
3288      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
3289      * new common block and key passkey
3290      (mainly gad_advection.F)
3291    o Modified store directives for split of dynamics/thermodynamics
3292      for the case ALLOW_KPP
3293    o Cleaned argument list for timestep_tracer.F
3294    
3295    checkpoint41
3296    o re-formatted/added comments in prologues of key subroutines
3297      to work with protex
3298    
3299    checkpoint40
3300    o moved calc_gs, calc_gt and calc_tr1 back to model/src
3301    o added FLT (floats) package from Arne along with demo. experiment
3302    o re-arranged Adams-Bashforth scheme for tracers to allow easier
3303      implementation of forward-in-time forcing terms
3304    o more mods for non-linear free-surface including new variable
3305    o modified multi-dim method to work on cube
3306    o bug fix in KPP (from DM)
3307    
3308    checkpoint40pre9
3309    o added DST advection schemes
3310    o fix MPI bug on SGI's
3311    o modifications for non-linear free-surface
3312    o fixed conditionals for fixed flow/passive tracer only mode
3313    o added tension/strain form of stress tensor
3314    o changes to commenting of arguments for TAF/TAMC
3315    o added/updated many matlab scripts
3316    o added multi-dimensional advection method for tracers
3317      
3318    checkpoint40pre8
3319    o new package rw/
3320      Added method for dumping intermediate local arrays:
3321      mdsio_writetile - same as mdsio_writefield except works from inside
3322                        bi,bj loop
3323      mdsio_writelocal - same as mdsio_writetile except works for local
3324                         arrays
3325      write_local_r? - higher-level wrapper for mdsio_writelocal
3326      Controlled by diagFreq. Defaults to zero (ie. no dumps)
3327      Example given at end of mom_vecinv.F that dumps some local arrays.
3328    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
3329      control flux-form versus vector invariant code.
3330      Switch is runtime flag vectorInvariantMomentum (defaults to false)
3331      or genmake -DISABLE ...
3332    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
3333      (additional storing is now needed for case vecinv;
3334      currently nothing implemented to switch this storing off
3335      in case fluxform is used since no CPP flag available).
3336    
3337    checkpoint40pre7
3338    o bug fix in dynamics.F
3339      calc_viscosity called before k=1,Nr loop.
3340    o added some #ifdef's ALLOW_PASSIVE_TRACER
3341    o cleaned initialisations in ctrl_map_ini
3342      related to TAF
3343    
3344    checkpoint40pre6
3345    o split dynamics into thermodynamics & dynamics
3346    o corresponding split of calc_diffusivity into
3347      calc_diffusivity, calc_viscosity
3348      (kpp_calc_diff, kpp_calc_visc).
3349    o Added diffkr, kapgm to control variables
3350    o bug fix in gmredi_slope_limit for ldd97
3351    
3352    checkpoint40pre5
3353    o proper initialization of Adams-Bashforth time stepping
3354      + uses forward step for very first step of model (iter=0)
3355    o re-generated *all* output since almost all output is modified by this
3356      change (sorry but we've been putting this one off for about 2 years)
3357      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
3358        *not* regenerated since they are already out of date and I don't
3359        want to create the impression that they are suddenly working.
3360    o removed KAP stuff for DEC's
3361    o modified/added many .cvsignore files in */code and */input
3362    o added new expt "solid-body.cs-32x32x1"
3363      + this uses an alternative form of ini_curvilinear_grid.F which
3364        is not necessarily any better than the current one...
3365    
3366    checkpoint40pre4
3367    o added re-initialisations of utrans,vtrans,rtrans in
3368      calc_common_factors which are crucial for TAF.
3369    o extended iMin,jMin range for calc_common_factors,
3370      calc_diffusivity
3371    o added option ALLOW_PASSIVE_TRACER
3372    o a few minor updates and fixes
3373    
3374    checkpoint40pre3
3375    o created calc_gtr1.F for gad package
3376    o split the_main_loop and re-introduced forward_step
3377    o some recomputations of nIter0 for TAMC
3378    
3379    checkpoint40pre2
3380    o Updated to latest branch of AJA, JMC
3381    o Added gradient check package
3382    o Added routines for passive tracer handling
3383    o Added carbon sequestration sensitivity experiment
3384    
3385    checkpoint39
3386     o Modifications and fixes to support TAMC
3387       (mainly missing or wrong directives)
3388     o Corrected common blocks when fooling TAMC to produce adjoint I/O
3389       in addummy_in_stepping
3390     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
3391     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
3392     o Included following packages:
3393       cal: calendar
3394       exf: external forcing
3395       ecco: essential routines to control use of cal, exf
3396             (NB: this is not the full ECCO environment)
3397     o disabled some packages by default in genmake
3398    
3399    checkpoint38
3400     o see notes_c37_adj.txt
3401     o corrected wrong layer index in external_forcing_t
3402     o replaced the_main_loop/forward_step by the_main_loop
3403     o removed forceoutput from write_state
3404       (replaced criteria for initial/final state)
3405     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
3406    
3407    checkpoint37
3408     o mdsio.F routine split and packaged in pkg/mdsio
3409       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
3410        used unless genmake -disable=mdsio)
3411     o allow a more precise surface-geopotential gradient for the atmosphere
3412       taking into account the change in space of Alpha (=1/rho) at the surface.
3413     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
3414       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
3415     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
3416       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
3417       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
3418     o Time-Average diagnostics defined as a pseudo package "timeave".
3419     o pickup files : old pickup (before c35) did not work with new code (c35
3420       and after) unless activating 2 commented lines in initialise-varia.
3421     o Non-Hydrostatic pickup file Pb fixed.
3422     o bug with Rigid-lid version (since c35) fixed.  
3423    
3424    checkpoint36
3425     o implement Crank-Nickelson barotropic time-stepping
3426     o recover Time-Average diagnostics
3427     o fix Pb in checkpoint (PR#19)
3428     o AIM become a standard package ; clean unused CPP_kees
3429    
3430    checkpoint35
3431     o subtantial rewrite of dynamics.f
3432     o allows staggered time-stepping
3433     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
3434     o added bottom drag (linear + quadratic)
3435    
3436    checkpoint34
3437     o Modified exchange routines for correct reverse simulation.
3438     o Added verification output to comply with bug fix in impldiff.F
3439       as of c33 (exp2, natl_box).
3440     o Corrected store directives in dynamics.F
3441     o Corrected array boundaries in impldiff.F
3442     o Corrected array dimensions in gmredi.
3443       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
3444     o Added routine GLOBAL_SUM_INT to global_sum.F
3445     o Added mdsio_gl.F for ECCO purposes.
3446    
3447    checkpoint33
3448     o Fixed bug in lower BC in impldiff.F
3449     o Fixed confusion about units of forcing arrays in FFIELDS.h
3450       namely Fu,Fv,Qnet,Qsw,EmPmR:
3451       - Removed verification/natl_box/code/external_fields_scale.F
3452         (did not differ from that in model/src)
3453       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
3454         (see FFIELDS.h for description)
3455       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
3456         kpp_calc.F and kpp_transport_t.F
3457       - Removed model/src/external_fields_scale.F and calls to it
3458       - verification/natl_box uses flux data with "atmospheric" sign so
3459         a special version of external_fields_load.F is used to
3460         change the data as it's read in. This way, the arrays
3461         have the right units and signs at all times tha a user could
3462         possibly use them.
3463     o Corrected genmake to delete a temporary file during configuration
3464    
3465    checkpoint32
3466     o Scaling of forcing fields moved from external_forcing.F to
3467       external_fields_scale.F, called directly after loading fields.
3468     o Surface relaxation terms added to surface tendency fields in
3469       extra subroutine.
3470     o impldiff.F changed to avoid storing by TAMC of huge intermediate
3471       fields.
3472     o Changes in GMRedi to comply with packaging structure.
3473     o Modifications and bug fixes in KPP package.
3474     o Verification experiment for KPP added (verification/nat_box/)
3475    
3476    checkpoint31
3477     o Packages interface brought in line with defined standard
3478       -> new routines packages_...F
3479       -> changes in initialise_fixed.F, initialise_varia.F
3480       -> enables initialisation interface for ECCO package
3481     o Rescaling of external forcing fields immediately after read
3482       (removed from external_forcing.F)
3483       -> new: surface_fields_scale.F
3484       -> affects ini_foorcing.F, external_fields_load.F
3485     o Computation of surface tendencies before tendency updates.
3486       -> new: external_forcing_surf.F
3487     o Change of variable names useGMRedi, useKPP, useECCO
3488     o Further changes in dynamics.F, impldiff.F for TAMC
3489     o Tested for experiments 0, 2, 4.
3490       - not yet tested for GMRedi.
3491       - not yet tested for KPP.
3492    
3493    checkpoint30
3494     o Updates for OBCs
3495     o New experiment for test OBCs (internal_wave)
3496     o New output.txt in verification/exp4/results/
3497     o Updates for KPP: calculation of viscosity corrected, new variables
3498       kpp_dumpFreq and kpp_taveFreq
3499     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
3500       and entry for T90 in genmake
3501    
3502    checkpoint29
3503     o packaged KPP and GM/Redi
3504    
3505    checkpoint28
3506     o Corrected initialization of hFacMin for difference vertical coordinates
3507     o Modified calculation of partial cell thickness to more robust algorithm
3508     o config_summary.F: replaced write_1D_... by write_0D_...
3509       read_write.F: added subroutines write_0D_...
3510     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
3511       included some initialisations required for TAMC.
3512     o routine calc_isoslopes: modified sqrt computation to make it
3513       differentiable for zero argument.
3514     o routines dynamics, impldiff:
3515       included store directives and tape key computations required for TAMC.
3516     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
3517    
3518    checkpoint27
3519     o fixed calc_isoslopes() to so that cancellation of terms in tensor
3520       formulation works properly with variable resolution.
3521     o restructured the calling tree between the_model_main() and dynamics()
3522     o split initialise() into initialise_fixed() and initialise_varia()
3523     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
3524       in new routine ini_psurf()
3525    
3526    checkpoint26
3527     o moved some #ifdef in optional routines to encompass everything
3528       except the argument declarations. This was using up some memory.
3529     o fixed macros like _ADT to work with both versions of Linux cpp
3530     o cleaned up some unused and uninitialized variables
3531       (helps when debugging with strict compile options)
3532     o split up CPP_EEOPTIONS.h into options and macros
3533       (macros are now in eesupp/inc/CPP_EEMACROS.h)
3534     o patch for 2 processor JAM mode
3535    
3536    checkpoint25
3537     o updates for OBCs and NH
3538     o dramatically reduced memory usage
3539     o added "JAM" routines for use on Artic network
3540     o parameterization of convection by implicit vertical diffusion
3541     o added a diagnostic of convective index
3542     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
3543       (this is was partly for OBCs and NH but also in anticipation of
3544        an explicit free-surface option)
3545     o initial state input files for U and V
3546    
3547    checkpoint24
3548     o Removed some spurious "REAL"s
3549     o Updated KPP to latest version from JPL
3550     o Added a COS(latitude) in horizontal viscosity
3551    
3552    checkpoint23
3553     o Added del^4 diffusion for salt and temperature
3554     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
3555    
3556    checkpoint22
3557     o Made many small changes: implicit none, format(i5), etc...
3558     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
3559    
3560    checkpoint21
3561     o Introduced new I/O package that supports direct-access records (mdsio.F)
3562     o Split-up mid-level I/O routines
3563     o Updated input data for experiments 0,1,2,4 and 5
3564     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
3565    
3566    checkpoint20
3567     o Tidied up open-boundaries some more
3568     o Added non-hydrostatic code
3569     o Fixed some input data
3570     o Modified MPI start-up to work in "coupled" context.
3571    
3572    checkpoint19
3573     o Tidied up directory structure for verification experiments.
3574     o Added new code for open boundaries.
3575     o Corrected advective terms near boundaries.
3576     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
3577     o Implemented free-slip/no-slip BCs and del^4 dissipation.
3578     o Split default parameters out of ini_parms.F into set_defaults.F.
3579    
3580    checkpoint18
3581     o Further changes for optional code generation with
3582       CPP - ugh!
3583    
3584    checkpoint17
3585     o Beginning to incorporating modularity
3586       for supporting atmos. and ocean configs.
3587     o Small changes for TAMC complinace
3588     o New ultra simple test case. Barotropic box
3589       configuration "exp0".
3590    
3591    checkpoint16
3592     o Minor changes to exchange routines to support
3593       accumulation in reverse mode. Adjoint of an
3594       assignment is an addition.
3595     o Changes to support compilation by TAMC (LR(1)
3596       syntax) and by g77 under Linux ( 72 character
3597       limit ).
3598    
3599    checkpoint15
3600     Rewrote exchange routines to allow
3601     o General tile <-> tile connectivity.
3602     o TAMC reverse mode flag ( is this really needed? )
3603     o Variable width overlap and exchange region widths.
3604     o Hooks for sharing data via DMA, Arctic, Memory Channel,
3605       shmput/shmget, VIA, SYSV shmem and every other cool
3606       communication method.
3607    
3608    checkpoint14
3609     Consistent isomorphism chages made. These allow dynamical core
3610     to support both pressure and meters as a vertical coordinate.
3611    
3612    checkpoint13
3613     Release which corrects global_max problem and a couple
3614     of KGM time-averaging diagnostic errors. Also contains
3615     a double-gyre experiment setup as well as the baseline
3616     4 degree global template. The double gyre template is
3617     organised to allow it to be applied automatically to
3618     the baseline configuration.
3619    
3620    branch-point-rdot
3621     A few tidy-ups have been made bt the real point of this
3622     check-point (excuse the pun) is to allow a branch to be
3623     made for the purposes of adding the rDot alterations.
3624     I don't want to commit the rDot to the main-trunk until
3625     we've actually tested it...
3626    
3627    checkpoint12
3628     Tidy up and added generic genmake script (formerly
3629     configure script).
3630     Released to testers.
3631    
3632    checkpoint11
3633     Re-arranged initialise() and introduced ini_vertical_grid()
3634     and ini_masks_etc().
3635    
3636    checkpoint10
3637     Introduced the configure script.
3638     Separated out the diags package.
3639     Added template for writing time-averages of tile/intermediate quantities.
3640     Updated SIZE.h in exp2 and made the data big-endian.
3641    
3642    checkpoint9
3643     MPI fix. Filename changes (meta/data). salbin*y stuff.
3644     General tidy-up.
3645     SST.bin SSS.bin added to verification/exp2
3646    
3647    checkpoint8
3648     Inludes time-dependant forcing and time-averaging.
3649     Works at 4x4 and 2.8125x2.8125 global
3650    
3651    checkpoint7-4degree-ref
3652     Branch from checkpoint7. Released for application to
3653     global modeling and general modeling - process studies, regional
3654     model etc..
3655     Configured for verification/exp2 - 4 degree global, two process.
3656    
3657    checkpoint7
3658     Created by cnh
3659     Simple 4 degree global simulation
3660     configuration.
3661     Includes climatological wind,
3662     hydrography, bathymetry etc
3663     Does not include Heat Flux and E-P
3664    
3665    checkpoint6
3666     Created by cnh
3667     merged checkpoint5 with CD and
3668     spherical polar code.
3669     Still some problems with GM Redi
3670     abd full topography.
3671    
3672    checkpoint5
3673     Created by AJA
3674     contains updates to GM Redi
3675     and reordered timestepping loop
3676     for Implicit Diffusion.
3677    
3678  checkpoint4  checkpoint4
3679   Created by cnh   Created by cnh
3680   Contains memory saving macros ( _rdxc etc..) for when   Contains memory saving macros ( _rdxc etc..) for when

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