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revision 1.5 by cnh, Mon Jun 15 05:13:55 1998 UTC revision 1.885 by jmc, Sat Sep 29 21:37:19 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    checkpoint59h
8    o pkg/exf:
9      - improve vectorization by moving if-statement out of loops in
10        exf_mapfields, exf_radiation
11      - exf_bulkformulae.F: introduce 2D fields and vectorize code
12    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
13    o testreport:
14      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
15        monitor & update offline_exf_seaice exp. output.
16      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
17    o pkg/seaice:
18      - bug fix in the evp solver: boundary conditions were affected be
19        masking of zMax/zMin (changes results)
20      - minor bug fix in boundary conditions in seaice_calc_strainrates
21        (changes results for no_slip)
22      - seaice_lsr.F: make interpolation of eta dependent on boundaries
23      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
24      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
25        stress formulation and no-slip boundary conditions
26    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
27      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
28    o pkg/seaice: a first HSALT time stepping equation has been checked in
29    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
30      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
31      without requiring DO-IF statements
32    o pkg/thsice:
33      use continuous power-law function for partition of energy between lateral
34      melting/freezing and thinning/thickening ; old code using step function
35      still available with #undef THSICE_FRACEN_POWERLAW
36      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
37    o testreport: change AD testing : check against results/output_adm.txt
38      using same scripts as for forward test.
39    
40    checkpoint59g
41    o adjoint testing: in preparation for changing testreport:
42      - output format: cost and grad written on separated lines
43      - ad output results in directory "results" (instead of "results_ad")
44    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
45    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
46    o pkg/ecco: allow user defined cost function contributions
47    o testreport:
48      Allow to choose (per experiment) the list of tested output variables
49       and the main variable (used to issue a pass/FAIL ) ;
50      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
51      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
52      Also modify printing of summary:
53       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
54       b) echo the list of tested variables in the individual summary.txt of
55          each experiment.
56    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
57      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
58      (but still depend on the tile decompostion of the domain).
59    o pkg/seaice: change a discretization detail to make the B-grid code
60      "more symmetric". This change is likely to remove all "ridges/leads" that
61      where quasi-aligned with the grid in B-grid solutions. It may also be
62      the solution to the stress coupling issues with the B-grid.
63    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
64      remove .cvsignore from input dir. (since testreport no longer run here).
65    o pkg/thsice:
66     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
67     - fix reshaping of sea-ice just after advection:
68       melt all the ice only if ice-volume is too small.
69     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
70       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
71     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
72    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
73      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
74    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
75      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
76      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
77      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
78      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
79      -> update output.txt
80    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
81     this affects truncation error: -> update output.txt of exp:
82      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
83      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
84    
85    checkpoint59f
86    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
87    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
88      a bounded range (in forward mode)
89    o pkg/ecco, ctrl, autodiff and mom_common:
90     internal parameter controls, completements of implementations
91    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
92    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
93      (not seem any difference in testing results).
94    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
95       at face corners.
96    o pkg/generic_advdiff:
97     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
98      loop range indices for computing vertical advection tendency
99      and do the calculation in the interior only (no overlap) ;
100      for now, only implemented for SOM advection (to save CPU time).
101     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
102    o exch2 adjoint
103      First set of changes:
104      - add exch2 hand-written adjoint templates
105      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
106        This will require cleanup in pkg/autodiff/*.F
107        (changed routines currently kept separate in verif. code/)
108      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
109        that used to hide exch2 or cubed-sphere specific code
110        (commented via 'cph-exch2')
111    o pkg/seaice
112      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
113    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
114       output of global_ocean.cs32x15.thsice .
115    
116    checkpoint59e
117    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
118      for B-grid vector (not yet tested) and C-grid vector (<- only used
119      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
120    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
121      (#ifdef ALLOW_SALT_PLUME)
122    o gather_2d/scatter_2d: removed halo regions
123    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
124      scheme and the corresponding test case (under front_relax dir). For now,
125      only available with Skew-flux form and not yet tested in realistic set-up.
126      adjoint: store directives updated, but gradient checks deteriorated,
127      so maybe GM/Redi adjoint is now broken.
128    o seaice adjoint
129      * add AREA, HEFF, HSNOW as control variable
130        (should not change lab_sea results)
131      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
132    o pkg/seaice:
133      * added computation of saltFlux in seaice_growth;
134        For time being, sea ice salinity is assumed constant
135        contribution of snow flooding to freshening of sea ice is neglected.
136        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
137        defaults to 0.0 in order to maintain backward compatibility.
138        Typical values for SEAICE_salinity are 4 to 10 g/kg.
139      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
140      * added SEAICE_availHeatFrac, which specifies fraction of surface level
141        heat content used to melt or grow ice
142      * commented out cap of HICE: it helps keep ice thinner
143      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
144      * applied OBCS T/S mask to HEFFM sea ice mask
145    
146    checkpoint59d
147    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
148     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
149     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
150    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
151     and change default value of parameter "GM_Small_Number";
152     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
153       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
154       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
155    o pkg/ecco: cost function when applying pkg/smooth to controls
156    o pkg/ctrl: add forcingPrecond run time parameter
157    o pkg/seaice:
158     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
159     - fix bug in metric terms of u-equation in LSR solver (implicit part),
160       changes verification/lab_sea
161     - rearrange implicit part of u-equation in LSR solver to make it easier to
162       read, understand, and debug. This causes changes at the truncation level.
163     - fix (serious) bug in the boundary conditions (sign error in the implicit
164       part) of the LSR solver. Changes all LSR results.
165     - fixed problem with HSNOW initialization to avoid thick snow when AREA
166       is initilized with small values - does not change lab_sea results.
167     - added HsnowFile initialization capability
168    o pkg/smooth: addition to model/src and pkg/ctrl so allow
169     initialization of pkg/smooth and application to control vector
170    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
171    o dependencies: pkg/profiles requires pkg/cal
172    o pkg/profiles:
173     - added option ALLOW_PROFILES_GENERICGRID
174         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
175         that interpolation information (grid points and coefficients) is provided
176         within the netcdf input files.
177         -> sample matlab scripts can be found in MITgcm_contrib/gael
178         that allow you to prepare netcdf input files.
179     - also modified: cleaner include statements, cleaner error print statements,
180       cleaner stops when error, and more tests of the netcdf input files consistency.
181    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
182    o pkg/seaice:
183     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
184       requires a new routine: seaice_diagnostics_fill.F
185     - make sure that seaice does not move if not forced (pressure replacement
186       method, Hibler and Ip, 1995), changes results
187     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
188     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
189       It is turned off by default (=-1.), because it changes the results.
190     - make it possible to read AREA from a file, too.
191    
192    checkpoint59c
193    o add S/R and diagnostics for oceanic mixed-layer depth
194    o move GMRedi call after all vertical mixing schemes (including KPP)
195    o pkg/thsice:
196     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
197      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
198    o pkg/obcs:
199     - bug fix for balance code
200    o pkg/seaice:
201      - allow values of SEAICE_elasticParm > 1
202      - add new parameter SEAICE_evpTauRelax as an alternative
203        to SEAICE_elasticParm
204      - make lsr boundary conditions free slip (by default), changes result
205      - add code for no slip boundary conditions for lsr
206      - set minimum of zeta to zero (and not 4e8) (changes results)
207      - add a cap on AREA after advecting AREA if seaice_growth is not called
208    o change calculation of Visbeck K:
209      - no longer depend on tapering scheme; instead, compute slope (limited
210        by GM_maxSlope). this is equivalent to what was comuted before with
211        clipping or linear tappering.
212      - fix vertical averaging (wrong by 1/2 level)
213      - leave the old version (but will not be maintained) within
214        #ifdef OLD_VISBECK_CALC / #endif
215      - update output of exp. ideal_2D_oce
216    o change error catch in calc_r_star to improve vectorization
217    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
218      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
219    o adjoint:
220      Re-organized adjoint checkpointing according to Matt Mazloff
221      (but with modifs/completions/cleanups)
222      Storing is now bundled into large arrays to optimized I/O
223      (and second step in cleanup of the_main_loop)
224    
225    checkpoint59b
226    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
227      - export/import (between ocean & coupler) fields needed for ocean DIC.
228    o pkg/seaice:
229      - get rid of three more exchanges seaice_calc_viscosities (required
230        different loop boundaries in seaice_lsr and seaice_ocean_stress)
231      - bug fix in seaice_ocean_stress (update of lab_sea required)
232      - reduce loop boundaries to necessary minimum also in seaice_evp
233      - go back to the old way of computing deltaC/Z as the adjoint likes that
234        better
235    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
236      passive tracer to an Age Tracer) + update output.txt
237    o pkg/exf:
238      - implement A-grid / C-grid selection for wind-stress input files.
239      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
240      for now, in exf_bulk_largeyeager04.F only :
241      - change implementation for case where windspeed + 2. components wind-stress
242        are read-in. AND use rhoConstFresh to convert evap.
243    o pkg/seaice:
244      - use correct EXCH_UV for wind-forcing (on A-grid).
245      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
246        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
247    o pkg/exf:
248      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
249      EXF_INTERPOLATION:
250      - merge global_with_exf/code version of exf_interp_read.F
251        to the main code ;
252      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
253        reading the file ; Important: This options needs to be defined to recover
254        previous code.
255        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
256      - no longer loose real*8 precision along the way when using exf_iprec=64.
257    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
258      - change discretisation of evp-solver in order to avoid another exchange
259        (changes lab_sea) and clean up a little
260      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
261        help the adjoint (this also changes the results slightly)
262      - add a few "_d 0" where they had been missing in seaice_evp.F
263      - cleaning up: remove unused seaice_calc_rhs.F
264    o pkg/exf: some cleaning-up:
265      - change various "constants" into runtime parameters
266      - cleaned-up Large&Yeager04 routine which should eventually
267        replace exf_bulkformulae.F (changed names of S/R and CPP)
268        and merged various ALLOW_ATM_WIND options
269     only used with thsice pkg (in thsice_get_exf.F):
270      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
271        which are used when useStabilityFct_overIce=TRUE (= the default)
272      - change default values of ice & snow emissivity and scale downward LW
273        by ice & snow emissivity.
274    o pkg/thsice:
275     fix few little problems, in thsice_calc_thickn.F:
276      - growth vertically (and not laterally) if iceFrac == iceMaskMax
277      - melt only laterally if hIce < hThinIce (as the comments say)
278      and in thsice_extend.F:
279      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
280      - start to form ice as soon as the minimum ice-volume is reachable.
281     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
282      and cpl_aim+ocn
283    o pkg/kpp
284     - move computation of surface related input fields to KPP into a new
285       subroutine kpp_forcing_surf.F
286     - remove wrong (within bi,bj loops) EXCH calls.
287     - little cleaning (add argument myThid in last position, cvs header ...)
288     - for now, fix conservation problem by exchanging KPPviscAz (may not
289       be the best fix)
290    o pkg/seaice
291     - check for inconsistent evp parameter/cpp-flag combination
292     - remove leftover errIO flat for obsolete name list error handling
293    o OpenAD
294     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
295    
296    checkpoint59a
297    o pkg/seaice: some parameter clarifications and a little bit of clean up
298    o pkg/thsice: rename run-time parameters:
299       himin       -> hIceMin
300       himin0      -> hThinIce
301       hihig       -> hThickIce
302       i0          -> i0swFrac
303       transCoef   -> bMeltCoef
304       frac_energy -> fracMelting
305      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
306       with default values (for now) that do not change the results.
307      remove old version of thsice vars advection in pkg/seaice.
308    o in FFIELDS.h:
309      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
310      - make pLoad & sIceLoad always available (but still only used if
311         ATMOSPHERIC_LOADING is #define).
312    o pkg/kpp: replaced _KPP_RL with _RL
313    o bug fixes for vertical diffusivity computations when both KPP and
314        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
315        are no longer updating the vertical diffusivity array
316        (passed as argument) but are (re-) setting those arrays.
317    o pkg/seaice: fix bug in evp solver, while doing that
318      - change (improve?) discretization of stress computations for both
319        cgrid-lsr and evp solver
320      - add a new routine to compute strain rates
321      - the above changes lab_sea results
322      - add no slip conditions for evp solver (off by default), lsr-version
323        may follow
324      - fix exchange for shear at Z-points (does not change lab_sea)
325      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
326        (to force the user to pick a time step since there is not "safe" way
327        of choosing it)
328      - add principal stress diagnostics
329      - rearrange fields for evp a little to avoid having to call a: too many
330        exchanges and b: exchanges for stress trensor components which we do
331        not have.
332      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
333        of evp, complete rewrite for lsr case (latter is does not yet work
334        in all cases)
335    o pkg/kpp: add code to have mixing in shelf ice caverns
336      - add myThid to all kpp routines (long overdue)
337    
338    checkpoint59
339    o pkg/exf:
340      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
341        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
342      - move exf header files from lower_case.h to UPPER_CASE.h ;
343        add missing cvs Header & Name
344      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
345      - add namelist param. selectStressGridPosition, exf_monFreq
346      - retire many _CLIM routines, and remove data.exf_clim
347        + params moved to data.exf
348        + climsst, climsss now handled by exf_set_gen, i.e.
349          climss?period=0 refers to constant field,
350          climss?period=-12 to monthly forcing
351      - split up namelists in data.exf
352    o pkg/seaice:
353      - remove seaice_exch and seaice_exch_uv
354      - remove superfluous exchange of theta
355      - add myThid to seaice_budget_ocean/ice
356      - add new interface for atmospheric wind forcing (C-grid only)
357        + new routine
358        + two new field (taux, tauy for stress over ice)
359        + removed one global field (DAIRN) for C-grid case only
360    o pkg/thsise
361      - 2nd set of modifs for thsice adjoint in conjunction with exf
362    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
363    
364    checkpoint58y_post
365    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
366      vertical diffusivity, similar to that in MOM4; turned on using
367      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
368      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
369    o Added capability for 3D specification of background vertical diffusion
370      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
371      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
372      "data" file that contains the 3D vertical diffusivity coefficients.
373    o ice dynamics (pkg/seaice) with thsice thermodynamics:
374      - add code within pkg thsice to advect & diffuse sea-ice fields
375      similar to (and will replace) what has been added in  seaice_advdiff.F,
376      but: - conserving Mass, Heat & Salt.
377           - better when using non-linear advection scheme (not yet fully tested)
378           - can also be used in atmospheric set-up (for now, only the diffusion).
379    
380    checkpoint58x_post
381    o IO option for global-file compact format:
382      - add options when generating topology (utils/exch2/matlab-topology-generator)
383      - add I/O capability (pkg/mdsio).
384      - adapt utils/matlab/rdmds.m to read this format.
385      for now long-line format not yet supported by pkg/mdsio (& exch2).
386    o shelfice: add a few diagnostics
387    
388    checkpoint58w_post
389    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
390      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
391      (and replace horiVertRatio in NH code).
392      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
393                         and tutorial_plume_on_slope (sensitive to truncation)
394    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
395      directly to drive seaice model (C-grid only)
396    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
397     - reintroduce computation of wind from stress,
398     - compute tau (in exf_bulkformulae.F) from windstress averaged to
399       mass points to avoid tau = 0
400     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
401    o rdmnc.m: make it work with "global" files created with gluemnc
402    o rdmnc.m : some improvements in dealing with singleton dimension
403      (tested on all testreport mnc output files).
404    o genmake2: disable pkg/profiles if netcdf test fails.
405    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
406    o move call to cal_readparms up to make calendar parameters/variable available
407      to all packages
408    
409    checkpoint58v_post
410    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
411      useDynP_inEos_Zc tested.
412    o pkg/exf: changes to properly interpolate/mask/scale initial fields
413    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
414      and portions thereof.  See read_cs.txt for description and examples.
415    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
416      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
417      following the great-circle arc between those 2 points.
418    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
419      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
420    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
421     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
422     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
423     - still needs work (not working with some options ; efficiency to improve)
424       and serious testing.
425     - use this scheme for temperature & salinity in 2 advection test exp.:
426       advect_xy & advect_xz, respectively.
427    
428    checkpoint58u_post
429    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
430    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
431    o testreport: add option "-skipdir" to skip some test.
432    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
433      momentum calculation.
434    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
435    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
436      remove checkpoint.F and the_correction_step.F (no longer used);
437      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
438    o add option (linFSConserveTr) to correct for tracer source/sink due to
439      Linear Free surface
440    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
441    o pkg/thsice: fix reading mnc-pickups
442    
443    checkpoint58t_post
444    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
445    o pkg/mdsio:
446     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
447       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
448       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
449     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
450     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
451       either MDS_READ_FIELD or MDS_WRITE_FIELD )
452     - new S/R (to replace MDSWRITEMETA), which allows to write more
453       informations (variable names, time ...) to meta files.
454     - modify rdmds.m to give back the meta file content.
455    o pkg/diagnostics: change vertical interpolation to be safer, and more
456       flexible (define p-levels to interpolate to in data.diagnostics);
457      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
458       diagnostic pointer.
459    o pkg/seaice: more cleaning up of seaice_growth, added many comments
460    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
461    o fix multi-category seaice:
462     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
463       SEAICE_MULTICATEGORY
464     - fix short wave heat flux
465    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
466       and allow to use EVP solver. Change forward lab_sea: test both EVP
467       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
468    o Initial check-in of lab_sea adjoint
469      (very similar to natl_box_adjoint/code_seaice)
470      * used C-grid and EVP solver
471      * used KPP, GM/Redi
472      * uses inAdExact=.TRUE.
473      * gradient checks fail for both ADM and TLM
474        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
475        f.d. gradients actually seem more problematic than ADM, TLM gradients;
476        issue is related to forward mismatch between g77 an ifort
477    o pkg/seaice: overhaul of thermodynamics
478     - growth.F and groatb.F are replaced by new routine seaice_growth.F
479     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
480     - move a few global fields out of SEAICE.h into seaice_growth.F and
481       make them 2D (FICE/QNETO/ ...)
482     - remove FO (it is the same as QNETO)
483     - introduce a few local fields to avoid modifying external fields such
484       as atemp, etc.
485    
486    checkpoint58s_post
487    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
488      changed exf_set_gen.F so that
489        genperiod=0 means input file is one time-constant field and
490        genperiod=-12 means input file contains 12 monthly means
491    o CG2D: use pre-computed solver main-diagonal (stored in common block);
492      this affects truncation error ; generate new output file for exp. which
493      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
494        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
495        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
496        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
497        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
498        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
499    o start implementation of deep-atmosphere and anelastic formulation
500    o verification: remove 2nd copy of input files and use script "prepare_run"
501      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
502    o mom_common/vecinv/fluxform: fix a few initialisation isssues
503    o profiles: fix for multithreaded case
504    
505    o diagnostics: rename few diags:
506      s/'PRESSURE'/'RCENTER '/g
507      s/'TICE    '/'oceFreez'/g
508      s/'TAUX    '/'oceTAUX '/g
509      s/'TAUY    '/'oceTAUY '/g
510      s/'SWFLUX  '/'oceQsw  '/g
511      s/DIFx/DFxE/g
512      s/DIFy/DFyE/g
513      and add few ocean-forcing diagnostics:
514      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
515    o modifications to pkg/seaice/growth.F and budget.F, which change results of
516      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
517      as actual snow thickness.  It now refers everywhere to effective snow
518      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
519    
520    checkpoint58r_post
521    o modifications to pkg/seaice/growth.F, which change results of
522      lab_sea experiment: fixes pertain to melting snow over open water, to
523      masking EVAP under sea ice, and to using the correct AREA variable for
524      computations of EVAP, PRECIP, HSNOW, and GHEFF
525    o add ability to read bathy, salt, and theta using MNC (off by def)
526    o add flooding algorithm and advection of HSNOW for pkg/seaice;
527      both are turned off by default and do no change any results
528    o seaice advection with pkg/thsice: a step toward the use of non-linear
529      advection scheme, but #ifdef or commented out for now (requires more EXCH).
530    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
531      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
532      in natl_box (affects results @ truncation level: update output.txt)
533    o multi-threading and IO:
534      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
535      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
536        (needed to work with SingleCpuIO): tested in all verif. exp.
537    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
538      affects the results (but none of the verification test uses this scheme).
539    o Adding some pkg/diagnostics capability to pkg/seaice
540      (will certainly be subject to changes)
541    o ctrl: adding new control variables:
542      lwflux, lwdown, evap, snowprecip, apressure, runoff
543    
544    checkpoint58q_post
545    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
546      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
547      high_res_cube configuration by 4% on Columbia.
548    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
549      add (in global_with_exf/code) a version of EXF_INTERP_READ without
550      dynamical allocation (seems to work in multi-threaded).
551    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
552      single CPU io) so that TAF does not have to see EESUPPORT.h
553    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
554    
555    checkpoint58p_post
556    o obcs: stop if obcs is used with useCDscheme = .true.
557    o shelfice:
558     - fix a sign error so that no slip at shelfice interface works
559     - remove stop for combination non-hydrostatic code and shelfice. That does
560       not mean, that the results are correct, but at least they are numerically
561       stable
562    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
563    o added adjoint exch routined for all exch*3d* routines
564      and updated flow directives
565    
566    checkpoint58o_post
567    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
568      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
569    o change controling S/R for writing pickup file (new S/R do_write_pickup)
570      and clean-up reading/writing of pickup files.
571    o fix local version of read/write pickup (NH part) in rotating_tank/code
572    o simplify EXCH interface:
573     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
574     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
575    o added the regrid package
576    o shelfice:
577     - add a simple boundary layer scheme to reduce noise
578     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
579    
580    checkpoint58n_post
581    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
582       local variable (not in common block).
583    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
584      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
585      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
586        to work with SingleCpuIO.
587    o add "_d 0" to real constant of pkg/cfc subroutines ;
588       update exp. cfc_exemple & tutorial_cfc_offline output files.
589    o multi-threading and IO:
590      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
591        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
592      - barrier before and after reading.
593      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
594      - avoid using MDS_WRITELOCAL for LAND pkg output.
595      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
596        common-block variables ; Allows multi-threading with master-thread IO.
597    o change default MAX_NO_THREADS from 32 to 4 ;
598      and stop cleanly when MAX_NO_THREADS is too small.
599    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
600    
601    checkpoint58m_post
602    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
603       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
604    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
605       keep global_ocean.90x40x15 (for AD testing) with former secondary test
606       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
607    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
608        add MITgcm_tutorials (= code + all the tutorials)
609    o ecco, option to compute cost for total ssh (mean+anom)
610    o consistent with addition of ptracer and ssh in pkg/profiles
611    o profiles: adding ptracer and ssh
612    o testreport: change multi-test output-file name
613      (from output.txt.{name} to output.{name}.txt)
614    o profiles: now ok for mutli-tiles case
615    o seaice: add 4 parameters for different advection schemes for area,
616      (effective) seaice thickness, enthalphy, and snow height. Their default
617      is the standard parameter SEAICEadvScheme
618    o calc_gw:
619     - add cosFacU in zonal viscous flux (harmonic.visc.).
620     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
621       of tutorial_plume_on_slope.
622    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
623    o calc_gw: true flux-form, account for horizontal grid spacing.
624      update rotating_tank results, but not plume_on_slope (affected at
625      truncation level, 11 digits).
626    
627    checkpoint58l_post
628    o calc_gw:
629     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
630     - remove side-drag for now (need to fix it); update plume_on_slope results.
631     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
632    o commit code to make SST/SSS weights spatially variable
633      (based on either variable in-situ or variable initial T/S weights)
634    o pkg/ecco:
635      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
636        now based on horizontally varying weights wthetaLev, wsaltLev
637      * cost_averagesflags now returns year indices in addition to day, month
638      * sflux balance is performed on annual basis
639        (sflxumm, sfluxmm2, bal_sfluxmm)
640      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
641        including separate counting and multipliers
642    o pkg/rbcs
643      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
644    
645    checkpoint58k_post
646    o testreport:
647     - always build in dir. "build" (if not there, mkdir build instead of building
648       & running in input)
649     - run in dir run (if it exists), in build otherwise.
650     - call prepare_run (if input/prepare_run exists)
651     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
652    o pkg/exf modifications to interpolation and rotation routines for more
653       reasonable treatment of North Pole singularity: for tracers North Pole
654       value is set to northernmost zonal-mean value, for zonal velocity it is
655       set to zero, and for meridional velocity it is set to northernmost value.
656    o pkg/exf/exf_check_range.F
657     - add tile index to diagnostics and move stop statement to the very
658       end of the routine.
659    o pkg/diagnostics: (diagnostics_main_init.F)
660      define title of isomorphic variables according to the current config.
661    o pkg/thsice with pkg/seaice dynamics:
662    - fix domain of computation (interior only, required for exf) and do exchanges
663    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
664    o towards a standard way of dealing with multi-threading in MONITOR
665      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
666    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
667       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
668    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
669    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
670    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
671       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
672    o tracer advection:
673     - clean-up and simplify calc_common_factors.F
674     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
675       advection subroutine (but still not used within DST advection S/R)
676    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
677    
678    checkpoint58j_post
679    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
680      from file (collects calls previously in FORWARD_STEP)
681    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
682    o adjoint store dir. adjusted accordingly
683    o genmake2
684      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
685    
686    checkpoint58i_post
687    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
688      on wind stress (SEAICEstressFactor defaults to 1.)
689    o Total number of Timers is finite (<=40): comment out 2 non-essential one
690      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
691    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
692      on CS-grid: no longer loosing mass.
693    o exf & curvilinear-grid: no longer modify longitude xC & xG.
694    o pkg/ggl90: fix sloppy output and fix a bug
695    o pkg/seaice: added SEAICEuseEVPpickup parameter
696      - Set to false in order to start EVP solver with
697        non-EVP pickup files when using SEAICEuseEVP
698      - fix sign error in diffusion in seaice_calc_rhs
699    
700    checkpoint58h_post
701    * Modifications for bottom topography control
702      o replace hFacC by _hFacC at various places
703      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
704      o add non-self-adjoint cg2d_nsa
705      o update autodiff support routines
706      o re-initialise hfac after ctrl_depth_ini
707      o works for 5x5 box, doesnt work for global_ocean.90x40x15
708    * Adding verification for 5x5 box (4-layer) bottom topography control
709    
710    checkpoint58g_post
711    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
712       used for mean seasonal cycle, mean diurnal cycle); add an example
713       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
714    o pkg/ggl90:
715      - add parameter (minimum surface kinetic energy)
716      - fix bug (avoiding division by zero)
717    o couple pkg/thsice to pkg/seaice:
718      - modify advection in seaice to accomodate new scalar fields to be advected
719      - only muliDimAdection scheme work with seaice/thsice
720      - mapping of thsice-variables to seaice-variables, back and forth
721      - does not break the verification experiments, but does not give the
722        desired results either
723    o pkg/seaice
724      - make (default) second order advection a bit less confusing?
725    
726    checkpoint58f_post
727    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
728      to pkg/seaice):
729      - new routines thsice_map_exf and thsice_get_exf provide the interface
730      - add an additional formal parameter to thsice_solve4temp
731    o pkg/exf:
732      - add new fields wspeed, snowprecip (to be able to couple to thsice)
733      - correct Stefan-Boltzmann constant
734      - new parameter for longwave surface emittance
735      - separate some stuff from exf_bulkformulae into new routines  
736        exf_radiation, exf_wind
737      - add new parameters and constants: longwave emissivity for ocean, ice
738        and snow, evaporation parameters over ice
739      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
740        either wind from stress or stress from wind
741    o pkg/thSIce:
742    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
743    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
744       and THSICE_CALC_THICKN
745    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
746    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
747      to make debugging easier.
748    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
749    o pkg/bulk_force:
750      - clean-up comments and parameters ;
751      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
752    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
753      generate new output for test-experiment: aim.5l_cs.thSI
754    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
755      testreport accordingly
756    
757    checkpoint58e_post
758    o SEAICE_CGRID adjoint done
759    o R_STAR adjoint implemented.
760      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
761      * need to sort out init. of h0facc, etc.
762    o Make pkg/profile fully independent of ecco,cost, etc. stuff
763      to be able to use it in pure forward.
764    
765    checkpoint58d_post
766    o upgrade simple test-experiment to tutorial example:
767     step.1: duplicate the experiment and (step.2) will remove the old copy.
768      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
769      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
770      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
771      tutorial_global_oce_biogeo    <- copy of dic_example
772      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
773      tutorial_plume_on_slope       <- copy of plume_on_slope
774      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
775      tutorial_global_oce_optim     <- empty for now (David ?)
776      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
777     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
778    o correct a sign problem in cost_scat.F
779    o obcs and ptracers: fix boundary conditions for advections schemes
780      with larger stencil
781    o thsice adjoint: start
782    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
783      completeness
784    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
785      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
786    o ptracers adjoint:
787      * avoid extensive recomputatations
788      * fix missing re-init. of gptr (missed by TAF)
789    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
790      me to turn off the excessive output to STDOUT that this package produces
791    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
792      and add those terms in Vector-Invariant formulation.
793    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
794      if the control period (xx_hfluxperiod etc) is 0
795    o in profiles pkg, clean routines and fix details
796    o in ecco pkg, reading ssh data:
797      fix problem in case the model does not start at iter0=0
798    o fix mnc-pickup/restart for ptracers
799    o new package prifiles:
800      code to compute profile-based cost by Gael Forget
801      (modifs in ecco, ctrl, autodiff)
802    o Benign bug fix in initialization (spotted by M. Mazloff) of
803      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
804    
805    checkpoint58c_post
806    o adjoint: finish NLFS adjoint and provide reference output in
807      verification/global_ocean.90x40x15/results_ad_nlfs
808    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
809      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
810      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
811      with SEAICE_CGRID defined.
812    o move calendarDumps from "data" to "data.cal" and clean-up the code
813      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
814    o add useEXF & useCAL flags (for now, set in hard-coded way)
815    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
816      (were missing in NH mode, and wrong in quasihydrostatic mode).
817      waiting for Chris updated version of calc_gw to add those CALLs.
818    o fix bug in quasihydrostatic S/R ;
819      add a test for this option: global_ocean.90x40x15.qshyd
820    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
821      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
822    o add on/off flag useOffLine for package OFFLINE
823    o seaice:
824      - modify advection so that it works also on the C-grid
825      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
826        problem in multi-tile runs with C-grid
827      - add flags for clipping ice velocities and/or masking solver forcing
828      - fix drag (ocean on ice) formulation and a bug that caused noise in the
829        C-grid solver
830      - added a few comments to seaice_diffusion.F
831      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
832        are now exclusive)
833      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
834        required re-ordering the code a little:
835       + make DAIRN global variable (defined in SEAICE)
836       + move computation of the viscosities eta and zeta into a new separate
837         routine (because I need to recompute them in seaice_ocean_stress.F)
838    
839    checkpoint58b_post
840    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
841      update output.txt of exp. aim.5l_cs.thSI
842    o various mnc cleanups and improvements:
843      + shrink lookup tables by factor of ~4
844      + better error reporting when running out of lookup space
845      + able to handle longer path/file names (up to 500 chars)
846    o adjoint:
847      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
848      - TBD: "hidden" mom_vecinv recomp. in dynamics
849    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
850     (allow to differentiate between forcing components using new integer flags:
851      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
852     and add new flag to put Dissipation tendency out of Adams-Bashforth.
853    o ecco
854      - enable trend removal from SSH anomaly obs.
855    o adjoint
856      - a fix for PmEpR when #undef EXACT_CONSERV
857      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
858      - try to fix "hidden" recomp. in forward_step for NLFS
859        (NLFS seems broken sometimes after I checked it in)
860    o seaice:
861     - add c-grid version of the dynamic solver:
862       + three new routines that are the c-grid substitute lsr, dynsolver
863         and ostres
864       + put a few fields that were local to dynsolver into global common
865         blocks, so that I can move the computation of stresses etc into
866         seaice_lsr (saves coding but may break the adjoint).
867     - replace more hardwired parameters by runtime parameters
868     - add ice masks that mask the rhs of the implicit solvers where there
869       is no ice (commented out in seaice_dynsolver, because i am not sure
870       if this works properly), eventually this should replace the clipping
871       of ice velocities in seaice_dynsolver to +/-40cm/s.
872    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
873      include it only where its needed
874    o move balancing of fluxes before the call of external_forcing_surf
875    o seaice:
876      - correct units of turning angles (now they are really in degrees)
877      - move computation of GWATX/Y out of main routine into dynsolver
878      - initialize GWATX/Y in seaice_init
879    o Apply mask on Fresh-Water flux (needed for SSH forcing).
880      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
881    o seaice: add runtime flags for turning angles (default to zero)
882    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
883      and trend from exf forcing and ctrl control adjustments
884    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
885      (since checkpoint57x_post)
886    o change the default rotation period to 86164.s = the Earth rotation
887    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
888      and based on a reference stratification. Tested within hs94.cs-32x32x5.
889    o seaice advection: add code for choosing between the default (2nd order
890      central differences) and multiDim advection schemes provided by
891      pkg/generic_advdiff
892    o seaice:
893      - removed all references to SEAICE_GRID.h fields from
894        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
895        (cubed-sphere configuration will change a little)
896      - grid computations in seaice_init are obsolete now.
897      - cleaned up code a little so that is easier to read (hopefully).
898      - added new (better?) discretizations of default advection and diffusion
899        (turn on with SEAICEuseFluxForm)
900      - replace 1 in 3d global fields by kSurface in growth.F
901      
902    checkpoint58a_post
903    o seaice:
904      - bug fix in advect.F
905    o shelfice:
906      - separate shelfice load anomaly from pload (breaks with time
907        dependent forcing), => introduce constant field shelficeLoadAnomaly.
908        Its default is 0., but it may be computed more cleverly from (unknown)
909        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
910        done offline. A good approximation of the pressure load anomaly is
911        necessary to avoid large initial adjustment processes underneath
912        deep-reaching shelfice.
913      - small fix in ISOMIP shelfice_thermodynamics
914      - add more sophisticated thermodynamics of Hellmer (1989), this is
915        now the default
916      - give a few constants more intuitive names
917    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
918      if bulk formulae are used in long integration (especially EmPmR). Turn
919      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
920      if balancePrintMean, the imbalance that is substracted is printed to
921      STDOUT.
922    o fix bug (typo) in obcs_apply_eta.F
923    o add a new package shelfice which enables us to model the circulation
924      underneath shelf-ice with draughts of hundreds of meters.
925     - works
926     - to do: + include improved thermodynamics
927              + check whether kSurfC (from model/inc/SURFACE.h) can be used
928                instead of new field kTopC
929              + can we use topoFile, Ro_surf and existing code in ini_depth.F
930                instead of new field R_shelfIce and new code in ini_depth.F
931                and ini_mask_etc.F?
932              + adjust vertical mixing schemes?
933    o seaice pkg:
934     - add a cpp-flag to include a simple formula for a salinity dependent
935       freezing point of sea water at the surface
936     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
937       meridional stresses are now different (and hopefully correct)
938    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
939       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
940       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
941    o pkg/diagnostics: add options and parameters for regional-statistics
942       diagnostics ; define regions by reading a region-mask from a file
943       (might add other options later)
944    o pkg/bulk_force:
945     - add option and parameters to use AIM surface-flux formulae.
946     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
947       others forcing fields (defined in PARM05, parameter file "data") are loaded
948       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
949     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
950     - use the right EXCH call for uwind,vwind (to work on CS-grid).
951     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
952       and parameters (note: calcWindStress replaces .NOT.readwindstress).
953     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
954    
955    checkpoint58
956    o add "--embed-source" option to genmake2 which, when the supporting
957      tools can be compiled (as determined by genmake2) will turn on the
958      embed_files package which then embeds the entire MITgcm source code
959      (*.[fFhc] + Makefile) used for the build within the executable
960      - requested by CNH but off by default
961      - adds a paltry <9MB to the mitgcmuv executable in most cases
962      - only writes the output when useEMBEDSRC in eedata is true
963    o clean up 3-dim. relaxation codes:
964      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
965      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
966      * Thanks to Tom Haine for testing!
967    
968    checkpoint57z_post
969    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
970      affects output (@ truncation level) of exp. plume_on_slope ; updated.
971    o fix the pickup behavior for obcs in combination with ptracers
972    o fix a bug in ptracers_external_fields_load
973    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
974      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
975    o transfered surface NH pressure to eta field (if exactConserv).
976    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
977         and update lab_sea output.txt file.
978    o completing 3-dim. relaxation code: additional term
979         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
980      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
981      * At compile time, in "EXF_OPTIONS.h" set
982          #define  ALLOW_CLIMTEMP_RELAXATION
983          #define  ALLOW_CLIMSALT_RELAXATION
984      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
985          tauThetaClimRelax3Dim = 15552000.0,
986          tauSaltClimRelax3Dim  = 15552000.0,
987      * 3 cases:
988          1) Use a constant-in-time 3-dim. field
989          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
990          3) Real-time relax. to time-evolving prescribed field
991    o Adding Laplacian-type smoothness constraint on
992      initial and boundary (forcing) controls (ic, bc)
993      * enable at compile-time via
994        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
995      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
996      * Absolute scale somewhat unclear so far
997      * no area weighting was included since no other cost term does so far
998    
999    checkpoint57y_post
1000    First step for a NLFS adjoint
1001    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1002    o new init. routines for calc_r_star, calc_surf_dr
1003    o still need to deal with ini_masks_etc
1004    o testreport seemed happy
1005    checkpoint57y_pre
1006    
1007    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1008    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1009    o add new offset feature to offline pkg (plus minor cleanup)
1010    o cfc fixes for final year of integration
1011    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1012      be in GCHEM_OPTIONS).
1013    
1014    checkpoint57x_post
1015    o fix testreport Pb in multiple test experiment.
1016    o cleanup our namelist syntax in verification:
1017      - make it more F95 standards compliant (some work still needed)
1018      - allows the vast majority of our tests to work with gfortran
1019    o Non-Hydrostatic:
1020     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1021     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1022    o Allow to apply AB on T,S rather than on AB(gT,gS):
1023     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1024     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1025       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1026     - need a "clever" read_pickup to restart from the other AB formulation
1027    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1028    o remove some unused variables (reduces number of compiler warnings)
1029    o adjoint
1030      * Disable useVariableViscosity for adjoint for time being
1031        (there are a number of extensive recomputations)
1032      * Initialize certain variables needed for adjoint
1033    
1034    checkpoint57w_post
1035    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1036                 fix the singleCpuIO RS version of MDSWRITEFIELD
1037       and add a WARNING if using globalFiles=T with multi-processors.
1038    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1039      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1040    o tracer advection scheme:
1041      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1042       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1043       was not very convenient).
1044      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1045       (further tests needed for the implicit DST & Flux-Limiter schemes).
1046    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1047      and sRef for convenience, handy, when you want to initialize
1048      ptracers in a large domain with a constant non-zero value. Also,
1049      untangle ptracers_init.F a little.
1050    
1051    checkpoint57v_post
1052    o change dome exp. to use variable viscosity in side-drag terms.
1053    o remove all the files from the cfc_offline test since they are now
1054      incorporated into tutorial_cfc_offline which has been producing
1055      identical results for a few days of testing
1056    o add new parameter: sideDragFactor to enable half-slip-side BC
1057      and change side-drag S/R to use viscosity from mom_calc_visc
1058      (can switch back by setting sideDragFactor=0.); affects results at
1059      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1060       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1061    o vorticity & strain are now computed without masking, to account for
1062      no-slip-side BC in variable viscosity calculation ; mask is applied
1063      anyway later on, before computing advection/coriolis terms.
1064    o modify exp4 to test new obcs support for reading from external files
1065      and for passive tracers
1066    o fix behavior of ptracers_monitor when monitor output is written to a
1067      netcdf-file; still not independent of monitor.F (writes in the same
1068      file).
1069    o change default value of tRef (put a uniform, meaningful value for ocean
1070      & atmos) and initialize sRef (was missing, as Martin mentioned).
1071    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1072      to be proportional to enstrophy dissipation length.  Thus,
1073       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1074      This is now consistent with Smagorinsky and with the manual.
1075    
1076    checkpoint57u_post
1077    o OBCS and PTRACERS: add open boundary support for passive tracers
1078      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1079        OB-values from file; this is not different from the way theta and salinity
1080        are treated
1081      - however, Orlanski-radiation conditions are not supported, and the model
1082        will stop if you use pTracers and Orlanski at the same time.
1083      - beefed up the rountine obcs_external_fields_load: now only those open
1084        boundary values are overwritten with values from files for which there
1085        are really files, otherwise the OB-fields remain untouched. This makes
1086        it possible to use different OBs at different ends of the domain (as
1087        with EXF)
1088    o reduce number of exch calls in shap_filt (s2).
1089    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1090      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1091    
1092    checkpoint57t_post
1093    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1094    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1095      same truncation, independent of the face number: affects affects several
1096      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1097    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1098      note that biharmonic viscosity + no-slip was not tested in any experiment.
1099    o fix bug in non-linear free-surf side-drag ; generate new output for
1100      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1101    o make mnc honor the writeBinaryPrec flag for most kinds of output
1102    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1103    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1104      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1105    o add brackets in multi-terms sum to get same truncation, independent of
1106      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1107      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1108    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1109      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1110      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1111      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1112      Suggested values of viscosity parameters found in mom_calc_visc.
1113      Many new viscosity diagnostics available.
1114    
1115    checkpoint57s_post
1116    o Add clearing-house for viscosity calculations, mom_calc_visc and
1117      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1118      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1119      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1120      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1121      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1122      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1123      ViscAhStrain and viscAhTension are now retired.
1124    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1125    o In response to JMC's bug report, genmake2 now ignores any soft-links
1126      that it finds in the *current* directory when searching for files.
1127      Soft-links found in any other source directories will still work as
1128      they did before.
1129    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1130      a C routine to unlimit the stack size
1131    o mnc-ify pkg/aim snapshot vars
1132    o mnc-ify pkg/land as requested by Daniel
1133    o various changes to mnc including:
1134      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1135      - output can now be grouped so that all files within a group
1136          change the ITER portion of their names in lock-step together
1137      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1138          and works with both EXCH1 and EXCH2 (but needs more testing)
1139      - writing works for all verification test cases w/ g77 on Linux
1140    
1141    checkpoint57r_post
1142    o make MNC variable initialization happen earlier
1143    o add diagnostics for (almost) each term of the momentum Eq.
1144    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1145    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1146    o remove MINIMAL_TAVE_OUTPUT option ;
1147      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1148    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1149      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1150    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1151    o add time-dependent SST, SSS control
1152    o cost terms in ecco/ modularized (new cost_generic.F)
1153    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1154    o new infrastructure for seaice model vs. obs misfits in seaice/
1155      * driver from the_main_loop.F is seaice_cost_driver.F
1156      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1157      * gradient check in Exp. 6a of natl_box_adjoint/
1158    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1159      (see README file)
1160    
1161    checkpoint57q_post
1162    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1163    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1164      - bug was reported by Jean-Michel and Ian Fenty
1165    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1166      update exp. cpl_aim+ocn output.
1167    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1168      Needed for high-res. runs with large global files
1169      to be able to limit tapelev size
1170    o Changed some tests for adjoint:
1171      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1172      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1173      * global_ocean.90x40x15/ back to default 3-level checkpointing
1174    o Modifications to enable scripted COMMON to MODULE conversion
1175      * verification/OpenAD/code/ has necessary scripts and description;
1176      * converts, compiles and runs successfully;
1177    
1178    checkpoint57p_post
1179    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1180    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1181      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1182    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1183    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1184      (was already the case for dissipation with mom_vecinv,
1185       and also the case for grad.PhiHyd when staggered-timeStep)
1186      This will allow to put dissipation out-off the AB time-stepping.
1187     Unfortunately, affects truncation error. Update output of exp. that "fails"
1188      (cg2d matching number) and leave the others for later: front_relax(10),
1189      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1190      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1191    
1192    checkpoint57o_post
1193    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1194      (2) its ready to be documented during the 20050801 DocFest
1195    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1196      for ideal_2D_oce and lab_sea on linux_ia32_g77
1197    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1198      in global1x1_tot/code_seaice_adj to access indices 32, 33
1199      (worth another tag)
1200    
1201    checkpoint57n_post
1202    o adding precip control xx_precip 32
1203    o adding swflux control xx_swflux 33
1204    o Replacing 10 forcing penalty cost routines by 1 generic.
1205    o Implementing partitioning in time-mean and variable adjustment
1206      for atmos. state.
1207    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1208    o in natl_box_adjoint:
1209      * updated exp 1 to 10
1210        (but does not have time-mean vs. variable split results yet)
1211    o updated global1x1/*_seaice_adj/
1212      to incorporate latest changes
1213    o enable useSingleCpuIO for mdsio vector routines
1214      (applies in particular to tapelev I/O)
1215    o removed inefficient K-loop in all active_file*control*.F
1216    
1217    checkpoint57m_post
1218    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1219      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1220    o pkg/exch2: filling of face-corner halo regions is optional
1221      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1222    
1223    checkpoint57l_post
1224     tag before updating tutorials (pre-release-2)
1225    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1226       for output and interpolation of input fields onto model grid)
1227    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1228       Affects results of exp. rotating_tank ; update output.txt.
1229    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1230          and taking the square quantity and/or using a fraction-weight field.
1231    o fix aim_diagnostics_init.F mate numbers.
1232    o add mnc output capability to diagnostics/diagstat and update
1233      our cvsignore files for the ACSII output generated
1234    
1235    checkpoint57k_post
1236    o lab_sea now uses diagnostics package and provides a suite of
1237      new EXF diagnostics output.
1238    
1239    checkpoint57j_post
1240    o exf
1241      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1242        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1243        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1244      * extended diagnostics output
1245        - now includes all EXF variables
1246        - hs, hl moved to common block
1247        - separate S/R for diagnostics, called after ctrl vector is added
1248        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1249        - EXFqnet contains true Qnet (i.e. includes qsw)
1250      * updated verif. lab_sea, global_with_exf
1251      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1252        to ensure that diagnostics sees a true EXFqnet
1253    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1254    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1255      several times with different frequencies.
1256    o mnc-ify the thsice package as requested by Daniel Enderton
1257      - the monitor--MNC output needs work
1258      - many attributes need to be added (most are currently blank)
1259    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1260      - many attributes need to be added (most are currently blank)
1261    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1262    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1263    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1264      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1265         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1266    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1267     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1268    
1269    checkpoint57i_post
1270    o Diagnostics package was changed: diagnostic allocation is now deactivated
1271      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1272    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1273      add 1rst Order upwind vertical Shear.
1274    o add a quick fix for A/B checkpointing in OFFLINE mode
1275    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1276      end-run around the C/Fortran linking horror in eesup/src/timers.F
1277    o added pkg/runclock: allows user to terminate run based on wall clock
1278    o added non-hydrostatic scaling parameter: nh_am2
1279    o pkg/my82: futile attempt to make results compiler-independent by adding
1280      some "_d 0", etc. no effect.
1281    o for mnc output, fill the 'T' coordinate var with myTime and create a
1282      separate 'iter' variable for iteration count
1283    o pkg/diagnostics:
1284      add new capability: output of Global/Regional & per-level statistics ;
1285      tested against monitor output (including land & thSIce) on various exp.
1286    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1287    
1288    checkpoint57h_done
1289      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1290      data.diagnostics, data.gchem, data.ptracers) is done.
1291    
1292    o pkg/diagnostics: prepare for Global/Regional statistics.
1293      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1294    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1295      and rename it: DIFFERENT_MULTIPLE
1296    
1297    checkpoint57h_post
1298    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1299    o pkg/diagnostics: change output frequency, now in seconds (instead
1300      of Nb of iterations). This requires to change data.diagnostics.
1301    checkpoint57h_pre
1302    
1303    o in mnc, let the user create the output dir if both mnc_outdir_date
1304      and mnc_outdir_num are false
1305    o add fflags() to pkg/diagnostics which allows one to specify, on a
1306      per-file basis, the file precision [default behavior is unchanged]
1307    o added diagnostics to pkg/kpp, including computation of mixed layer
1308      depth based on a temperature/density criterion
1309    o updated verification/natl_box to test the new pkg/kpp diagnostics
1310    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1311    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1312    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1313      not mnc -- this mistake was found by JMC and is now corrected
1314    
1315    checkpoint57g_post
1316    o add Adams-Bashforth 3rd Order time stepping:
1317      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1318      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1319    checkpoint57g_pre
1320    
1321    o make lambda[Theta,Salt]ClimRelax spatially varying
1322      (default remains spatially uniform constant based on tau)
1323    o added new control variables
1324      * init. uVel, vVel, etanN
1325      * lambda[Theta,Salt]ClimRelax
1326    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1327      (suggested by G. Forget)
1328    
1329    checkpoint57f_post
1330    o add parameter "baseTime" = model base time = time at iteration zero
1331      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1332      account for baseTime shift
1333    o move Coriolis arrays from PARAMS.h to GRID.h
1334    checkpoint57f_pre
1335    
1336    o mnc-ifying the seaice package
1337    o introduced an alternative length scale calculation for use in the limiting
1338      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1339    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1340    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1341      as well as grad(vort3).  Made it compatible with both approximate form
1342      for the cubed sphere and full form of these gradients.  Added flag
1343      useFullLeith to select between approximate and full form.  
1344    o add "d0" in getcon.F to reduce differences between compilers/platforms
1345      update output.txt of exp. fizhi-gridalt-hs
1346    o change port_rand funtion to allow to set the seed.
1347    o fix obscure MNC bug involving conversion between reals and integers
1348      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1349        new version is now more standards-compliant
1350    o adjoint-related modifications
1351      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1352      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1353      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1354    
1355    checkpoint57e_post
1356    o Adding eddy stress controls a la Ferreira et al.
1357    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1358    
1359    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1360      update output.txt of exp. fizhi-gridalt-hs
1361    o add more "Z" dimensions and associated coordinate vars to MNC
1362    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1363    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1364      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1365      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1366      months and years.  Requires pkg/cal.
1367    o diagnostics: add pickup functionality
1368      - off by default for backwards compatibility
1369      - current version only uses MDSIO -- MNC will be added
1370    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1371    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1372    
1373    checkpoint57d_post
1374    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1375    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1376      output from the diagnostics package
1377    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1378    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1379      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1380    o add coordinate variables to the MNC output from the diagnostics package
1381    o change MNC-flags default value: true when useMNC=TRUE
1382    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1383      the ability (off by default) to read the grid information using MNC
1384    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1385    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1386    o do snap-shot diagnostics at the middle of the time-interval (instead of
1387      at the end).
1388    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1389      new test for AIM with thSIce + slab-ocean
1390    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1391    o move state variable diagnostics to the beginning of the time step ;
1392      (note: still needs some work specially for snap-shot diagnostics)
1393      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1394    
1395    checkpoint57c_post
1396    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1397    o generate new output.txt files on faulks with g77 & the new -ieee option
1398    checkpoint57c_pre
1399    
1400    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1401      update output.txt of exp. global_ocean.90x40x15
1402    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1403      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1404    o add saltFlux(+File) forcing capability with periodicExternalForcing
1405    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1406    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1407    o improvements for the MNC output from DIAGNOSTICS:
1408      - correct handling of the unlimitied dimension
1409      - all dims now have associated coordinate variables
1410      - variables located at U, V, and Corner ("Z") points are now written
1411        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1412        *all* data points are output
1413    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1414    o added pkg/seaice/seaice_monitor.F
1415    o mdsio_readfield.F can now read files visible only to master MPI process.
1416    o pkg/seaice: some test code for ice-modified ocean stress
1417    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1418      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1419      spurious negative numbers for precipitation and humidity.  Will cause
1420      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1421    o pkg/ctrl/
1422      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1423        May be enabled via doPackDiag
1424      *  introduce z-scaling of
1425         + gradient (doZscalePack) and
1426         + control (doZscaleUnpack)
1427    o pkg/mdsio/
1428      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1429      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1430    
1431    checkpoint57b_post
1432    o simplify options in diagnostics_fill arguments (remove weird combinations)
1433    o fix MNC coordinate variables so that they now contain per-face index
1434      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1435      general, EXCH2 grids are only aligned to a "local" coordinate system
1436    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1437    o Implement instantaneous output within pkg diagnostics:
1438      setting a negative frequency in data.diagnostics produces
1439     "snap-shot" output (as opposed to time-average if freq > 0)
1440    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1441      NOTE: change ptracer diagnostics name: use 2 characters to work with
1442            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1443    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1444      becomes the coordinate variable for the 'T' dimension
1445    o add CF-style coordinate variables to MNC
1446      - just a first cut:  numbers are meaningless on the cubesphere and
1447        missing along the T axis but otherwise it works!
1448    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1449    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1450    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1451      this is based directly on what the model compute, so that the content of
1452      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1453    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1454    o clean up build options files for SunOS, in particular
1455      - remove -traditional from xmakedepend
1456      - change -xarch=v9 to -xarch=native for f77
1457      - restore use of make (not gmake)
1458      - add CC=gcc if using g77
1459    o changes per discussion of AM, JMC, & EH3 today:
1460      - move redundant "grid" variables out of "state" -- in preparation of
1461        creating proper CF-style coordinate variables and in recognition
1462        that any/all grid variables can be easily copied (eg. w/NCO) from
1463        the grid files into any of the other NetCDF files
1464      - *always* output grid variables with MDSIO (this will eventually be
1465        changed)
1466      - output MNC grid file if useMNC is true
1467    o every instance of _END_MASTER() has been found and replaced with
1468      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1469      preprocessors
1470    o re-arrange diagnostics pkg initialisation:
1471     - allow each package to extend the available diagnostics list
1472     - add some checking and fix small problems (multi-threaded, ...)
1473     - new S/R diagnostics_fill (replace fill_diagnostics):
1474       look through the short list of active diag. (instead of the long list)
1475       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1476    
1477    checkpoint57a_post
1478    o this set of changes restores TAMC compatibility
1479      tested for global_ocean.90x40x15 adjoint on trough
1480      (what a pain)
1481    
1482    checkpoint57a_pre
1483    o some modifs in tools/build_options for sunos
1484    o call ctrl_pack for ctrl at end for optimcycle=0
1485    
1486    checkpoint57
1487    o add horizontal bi-harmonic viscosity for vertical velocity
1488      - new parameter viscA4W (defaults to viscA4)
1489      - affects only non-hydrostatic code
1490      - to be done: no-slip lateral boundary conditions
1491    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1492    o implement Implicit Vertical advection for pTracers
1493    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1494      (implemented also for implicit vertical diffusion & advection)
1495    o OBCS: extend application of tracer open boundary conditions
1496      to a strip beyond the boundary of width Olx/Oly
1497    o add call monitor to TAF set of required calls (flow directives)
1498      and include in natl_box_adjoint
1499    o untangle a few ifdefs related to cost, ctrl, autodiff
1500      untangel a few ALLOW_ECCO_OPTIMIZATION
1501    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1502      (theta2, salt2 in ecco_cost_weights)
1503    
1504    checkpoint56c_post
1505    o OBCS as control variables
1506      - update ctrl_ad_diff.list, obcs_ad_diff.list
1507      - remove balance of obcs controls from default
1508      - fix index bug nobcs in ctrl_init
1509      - fix dummy fields filen in ctrl_pack
1510      - add dummy weights for obcs
1511    o lsopt: comment out fort.94 output
1512    o optim:
1513      - remove unnecessary header files
1514      - adjusted namelists
1515      - add xerbla.F to Makefile
1516    o exf:
1517      - multiple modifications of exf_check_range
1518      - unit change in exf_init_runoff from [m/year] to [m/s]
1519    o mdsio:
1520      - i/o-vector change debugLevel from debLevA to debLevB
1521    
1522    checkpoint56b_post
1523    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1524      is called from DO_THE_MODEL_IO
1525      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1526      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1527      - clean up PTRACERS_WRITE_TIMEAVE a little
1528    o add another verification experiment that tests both the cfc-pkg and
1529      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1530      reactive tendencies treated inline with regular timestepping
1531    o testreport previously did a lousy job of comparing small numbers, so
1532      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1533      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1534      testreport.
1535    o ptracers_monitor: bug fix for MPI
1536    
1537    checkpoint56a_post
1538    o GCHEM: finish reorganizating the package
1539      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1540        (introduces another 3D-array for each passive tracer, but only if
1541        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1542        gchemTendency is not needed because the timestep is done separately)
1543      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1544      - GCHEM is now---more or less cleanly---separate from PTRACERS
1545      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1546        so clear to me how that should be done in a general way.
1547    o CFC: improve formatting of output in CFC_ATMOS
1548    o PTRACERS:
1549      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1550        that ALL experiments with ptracers enable can be checked. This makes
1551        GCHEM_MONITOR obsolete.
1552      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1553        monitorFreq
1554      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1555    o add PTRACERS (PTR0[1-5]) to testreport output
1556    o exf_check_range:
1557      * default changed to .TRUE.
1558      * will check values for niter0 if debLevA, every timestep if debLevB
1559      * STOP in exf_check_range if 'out of range'
1560      * range chosen generous to allow for potential extema
1561      TBD: a version with stricter range
1562           permitted range would be runtime parameters
1563    o GMredi:
1564      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1565      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1566      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1567    o GCHEM:
1568      - move call to GCHEM_FORCING_SEP, so that it is now called before
1569        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1570      - introduced a useGCHEM runtime flag and applied it everywhere.
1571      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1572        this flag is now only visible within GCHEM-pkg routines.
1573      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1574        be replaced by a 3D array that is computed before thermodynamics; for
1575        this, the tracer ID iTracer had to be included into the parameter list
1576        of ptracers_forcing
1577      - set up forward_step to call gchem_forcing, that will replace
1578        gchem_forcing_int in ptracers_forcing
1579      - cleaning up
1580    o small cleaning of exch2: remove files that are also in eesupp/src
1581    
1582    checkpoint56
1583    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1584    o mnc: cleanup "full" files--fixes out-of-memory problem
1585    o ECCO-GODAE
1586      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1587      * fully merged and updated from SIO code
1588        windstress sign change affects
1589        - exf_inscal_[u/v]stress
1590        - sign of xx_tau[u/v] adjustments
1591        - signs in cost_scat
1592      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1593      * natl_box_adjoint updated and compressed
1594      * 2-level checkpoint switch added
1595        (tested in EXP. 1 of natl_box_adjoint)
1596      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1597    o SVD
1598      * first complete, non-hacked version for SVD calculations
1599      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1600        performed via direct access files admtlm_vector.it????
1601        (via ctrl_[un]pack)
1602      * optimcycle is used for ARPACK iteration counter
1603        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1604      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1605        and add linear transforms where necessary
1606      * controls are initial/final SST, SSS (can be extended; need to check
1607        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1608    o mdsio: filename info to both stderr, stdout
1609    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1610      from sign change
1611    
1612    checkpoint55j_post
1613    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1614      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1615    o add consistent build directories and .cvsignore files to verification
1616    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1617    o make all subroutines 30 or less characters in length for certain older
1618      compilers to work (a thorough search only turns up two routines in
1619      pkg/ptracers)
1620    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1621      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1622    
1623    checkpoint55i_post
1624    o change arrays for total vertical diffusivity (2.D if explicit,
1625      3.D if implicit) ; each ptracer uses its own background value.
1626    o added mnc/NetCDF output capability to ocn_compon_interf
1627      - added bits to verification/cpl_aim+ocn so that it can run on
1628        ITRDA and other clusters without the mpirun "-wd" option
1629    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1630      configuration
1631    o give MNC the ability to create additional files rather than
1632      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1633      - the default is just less than 2GB which is a practical limit
1634        on many systems
1635    o Compute the non-local term using either KPP vertical diffusivity (=default)
1636       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1637    
1638    checkpoint55h_post
1639    o add verification test "vermix"
1640    o remove all the *_ioinc flags and replace with the single global
1641      outputTypesInclusive flag
1642    o allow to set a vertical profile of vertical diffusivity for T & S
1643    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1644    o useMNC moved from data.mnc to data.pkg
1645    
1646    checkpoint55g_post
1647    o Renaming carbon AD experiments to comply with testreport conventions
1648    o Updating adjoint of Held-Suarez hs94.1x64x5
1649    o Fixing directives for non-ECCO forward_step, after ECCO directives
1650      have been fixed to avoid recomp. of do_oceanic_phys
1651      Works well for global_ocean.90x40x15,
1652      but recomp. issue remains for carbon
1653    o Updating adjoint output for natl_box_adjoint after
1654      pkg/ecco has been modified (see taga c55d_post)
1655    
1656    checkpoint55f_post
1657    o rename to timeave_init_fixed
1658    
1659    checkpoint55e_post
1660    o some delicate re-shuffle of store directives to avoid one
1661      extra call of do_oceanic_physics
1662      affects ecco_the_main_loop.F, do_oceanic_physics.F
1663      checkpoint_lev1_directives.h
1664    o NB: this may break global_ocean adjoint temporarily,
1665      but it is clear how to fix it. Will do later, need this now.
1666    
1667    checkpoint55d_post
1668    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1669    o ecco_cost_weights is modified to 1x1 runs
1670    o modifs to allow observations to be read in as
1671      single file or yearly files
1672    o enable to read exf forcing fields as either
1673      single file or yearly files (flag useExfYearlyFields)
1674    checkpoint55d_pre
1675    
1676    o switch between 2-level and 3-level checkpointing
1677    o add ability of MNC to write local and "partial" (eg. 2D slices where
1678      the full 3D field is never actually stored) arrays to NetCDF files
1679      with the correct (that is, the complete multi-dimensional) set of
1680      array indicies
1681      - used in mom_vecinv() to write the diagFreq output
1682      - tested (demonstrated) in verification/aim.5l_cs
1683    o further mnc-ification
1684      - add verification/lab_sea to the list with mnc setups
1685      - fix undefined mnc v-names in cd_code
1686      - add kpp to mnc output (both snapshot and timeave)
1687    o non-hydrostatic code
1688      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1689        in calc_gw.F
1690      - defaults to viscAh
1691      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1692        friction or Leith) in non-hydrostatic mode, as long as there is
1693        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1694    o pkg/cost
1695      extend simple cost functions to treat time mean quantities
1696      (T,U,V) via cost_accumulate_state from cost_tile
1697    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1698        be 2 times larger than the minimum size the advection scheme requires.
1699        now get a perfect conservation of salt in advect_cs test-exp (updated)
1700    o GGL90 (Gaspar's TKE mixed layer)
1701      - add horizontal diffusion of TKE, requires exchanges in
1702        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1703        default. In OPA there is no horizontal diffusion of TKE but the
1704        mixing coefficients are computed from a horizontal average of TKE of
1705        6 points or so. I think that diffusion has a little more physical
1706        justification.
1707      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1708        was in vain)
1709      - mask tke-variable in ggl90_init
1710    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1711    o fix biharmonic diffusion on CS-grid.
1712    o more obcs stuff
1713      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1714        for reading boundary values. This routine is called from
1715        obcs_prescribe_read
1716      - updated obcs_check
1717      - changed sponge layer relaxation parameter units for days to seconds
1718      - turned off sponge layer by default
1719      - changed argument list of OBCS_CALC to myTime+deltaTclock
1720      - fixed about 35 bugs in obcs_external_fields_load
1721    
1722    checkpoint55c_post
1723    o obcs stuff
1724      - new runtime flags useOBCSprescribe, useOBCSbalance
1725      - re-arranged obcs_calc
1726      - moved exf_getobcs to obcs_prescibe_read
1727        obcs_prescibe_read is called after ORLANSKI stuff
1728        and independent of it (executable can contain all).
1729      - updated obcs_check
1730      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1731        These may be necessary only if tangential velocities are
1732        prescribed at OB, not sure, needs testing.
1733    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1734      which simplifies the calls and passes the ifc check-bounds test
1735    
1736    checkpoint55b_post
1737    o add a 2D scalar, Z location, exchange_2 routine.
1738    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1739      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1740      affects advect_cs results (for the wrong reason): update output.txt
1741    o use a more standard discretization for biharmonic viscosity ;
1742     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1743      affects results of dome set-up: update output.txt
1744    o fix gad_advection.F (CubedSphere part), back to version 1.23
1745    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1746    
1747    checkpoint55a_post
1748    o merged code to
1749      * prescribe/read time-dependent open boundaries
1750        (works in conjunction with exf, cal)
1751      * sponge layer code for open boundaries
1752      * each boundary N/S/E/W now has its own CPP option
1753        (healthy for the adjoint)
1754    
1755    checkpoint55
1756    o up-to-date adjoint of previous breaks
1757      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1758      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1759      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1760      - carbon: * remove tr1-related adjoint verification
1761                * add ptracer as control variable
1762    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1763      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1764    
1765    checkpoint54f_post
1766    o in verification/carbin/ remove experiment related to
1767      ALLOW_PASSIVE_TRACER (array tr1 etc)
1768      code_ad/ input_ad/ results_ad
1769    
1770    o add two new packages
1771      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1772        + subject to optimization (memory)
1773      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1774        + subject to reordering (many GOTOs in the original code)
1775        + so far opps is called for every (i,j) point, and then operates in
1776          the vertical; one may want to reorder the scheme in order operate in
1777          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1778          fields)
1779    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1780      - all verification tests compile and run with linux_ia32_g77
1781      - defaults are compatible with current input files--nothing
1782        should change if you were not previously using MNC
1783      - MNC output has been added in numerous places (eg. timeave)
1784        but there are still a few writes not yet do-able with MNC
1785        (this is in progress)
1786      - flags now allow for either/or/both use of MDSIO and MNC and
1787        documentation will soon follow
1788      - numerous small formatting cleanups for ProTeX
1789    o add version info (via BUILD_INFO.h) to MNC and stdout
1790    
1791    checkpoint54e_post
1792    o add two new packages
1793      - pp81 (Packanowski and Philander, 1981), Richardson number and
1794        stratification dependent mixing
1795      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1796      - these scheme operate in a similar manner as KPP (without ghat, of
1797        course), however there is only one diffusivity that is used for both
1798        temperature and salinity (and passive tracers)ç
1799    o add offline package
1800    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1801      provided by Stephanie Dutkiewicz
1802    o genmake2: add ability to search for C compilers and cleanup test output
1803      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1804    
1805    checkpoint54d_post
1806    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1807    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1808      leading to additional shift by 5 days each year of integration
1809       (i.e. leading to considerable offset over the years)
1810    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1811    o start with no AB and no initial filtering (staggerTimeStep):
1812      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1813    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1814      (external loading & cpl import/export stay in forward_step.F)
1815    o update coupling interface to work with new staggerTimeStep
1816    o change MDSIO ptracers_pickup.
1817    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1818    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1819    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1820    
1821    checkpoint54c_post
1822    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1823      this affects (truncation error) output.txt of test-exp:
1824       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1825    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1826    o change Qnet to always be the net heat flux, (+upward).
1827      affects (truncation error) output of natl_box exp.: updated
1828    o define the max number of passive tracers in PTRACERS_SIZE.h
1829    o start to test mnc routinely in exp0
1830    o add sea-ice loading (sIceLoad) as a new forcing field.
1831    
1832    checkpoint54b_post
1833    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1834       impressive on Altix and Opteron systems)
1835    o diagnostics can now write NetCDF files through the mnc package
1836    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1837    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1838    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1839      affects (truncation error) output of lab_sea & natl_box exp.: updated
1840    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1841    
1842    checkpoint54a_post
1843    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1844    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1845    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1846    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1847      + internal_wave (shift in writing cg2d_ini_res)
1848    checkpoint54a_pre
1849    
1850    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1851      - modified verification/lab_sea and natl_box_adjoint accordingly
1852    
1853    checkpoint54
1854    checkpoint53g_post
1855    o prepare splitting of thermodynamics: store convect.counter in common block
1856    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1857      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1858    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1859    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1860    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1861    o restore adjointability
1862    
1863    checkpoint53f_post
1864    o modifications that affect AIM experiment results (update output.txt):
1865      - no advection of S at top interface Nr (pkg/generic_advdiff)
1866      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1867    o AIM pkg:
1868      - include stability function into surf.Flux derivative relative to Tsurf
1869      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1870    
1871    checkpoint53e_post
1872    o merged cylindrical coord configuration
1873    o added rotating_tank experiment
1874    checkpoint53e_pre
1875    
1876    checkpoint53d_post
1877    o faulks upgraded: re-generate output.txt that have changed:
1878       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1879    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1880    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1881    o added Sadourny discretization of Coriolis
1882      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1883      - re-enabled use of omega3 (useAbsVorticity)
1884    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1885      vector-invariant equations
1886      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1887    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1888      hopefully without new bugs
1889      - still to do: biharmonic friction for non-hydrostatic w
1890    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1891    o regenerated output for global_ocean_ebm (using -ieee)
1892    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1893      of mom_common/
1894      - simple re-arrangement of instructions within computing loop
1895    checkpoint53d_pre
1896    
1897    checkpoint53c_post
1898    o new version of coupler for AIM+thSIce and Ocean models
1899     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1900     - land: change Evaporation of snow
1901     - aim with thSIce: fix bug in snow-precip.
1902    o changes to calc_gw.F
1903     - bug fix for w^2 term near the bottom boundary
1904     - (hopefully) improve the lateral slip boundary condtions for use with
1905        partial/looped cells
1906      - because the bug fix changes two verification experiments anyway (exp5
1907        and plume on slope), change the lateral boundary condition from half slip
1908        to the value of no_slip_sides
1909    o ebm package wasnt quite up to the parallel task. Fixed that.
1910    o Adjoint of EBM package + verification
1911      * TLM OK
1912      * ADM not sufficient accuracy yet (needs further testing)
1913    
1914    checkpoint53b_post
1915    o Commiting new energy balance model to repository
1916      * package is pkg/ebm
1917      * verif. is verification/global_ocean_ebm
1918      * references are in ebm_driver.F
1919    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1920    C        Global thermohaline circulation. Part I:
1921    C        Sensitivity to atmospheric moisture transport.
1922    C        J. Climate 12(1), 71-82
1923    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1924    C        Global thermohaline circulation. Part II:
1925    C        Sensitivity with interactive transport.
1926    C        J. Climate 12(1), 83-91
1927    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1928    C        Destabilization of the thermohaline circulation
1929    C        by atmospheric eddy transports.
1930    C        J. Climate 7(12), 1870-1882
1931    o Will need long integration testing.
1932    checkpoint53b_pre
1933    
1934    o created pkg/mom_common in preparation for variable viscosity code
1935    o renamed and split ini_mnc_io
1936    o pkg/land: only liquid water can diffuse or run-off
1937    o AIM using land: soil wetness availability account for snow
1938    o added printMapIncludesZeros to EEPARMS namelist
1939    
1940    checkpoint53a_post
1941    o restore TAMC compatiility for exf_constants.h
1942      (no usage of _d in .h)
1943    o Additional storing in KPP in an attempt to fix
1944      TAMC problem with adjoint of KPP code.
1945      (no success...)
1946      Identical code works fine with TAF.
1947    o Fixed verification/natl_box_adjoint experiments.
1948      Initial conditions for Experiments 4 and 5 are now
1949      set to "SEAICE_initialHEFF=0", which is more reasonable,
1950      and hence gives results closer to that of Experiment 2.
1951      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1952    
1953    checkpoint53
1954    o stable checkpoint with up to date adjoint
1955      TLM tests only run for 1st grdchk at the moment. Its unclear if
1956      this is a code problem or a problem with resetting code for g_
1957      variables that is being autogenerated wrong.
1958      Otherwise:
1959       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1960       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1961         are both still in chaos following their security messes.
1962    
1963    checkpoint52n_post
1964    o various build (mostly genmake2) changes including:
1965      - ability to build/run more easily within Cygwin and MacOS X
1966      - more complicated Makefiles with a stronger dependence on Gnu Make
1967    o pkg/seaice modifications
1968      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1969        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1970        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1971      - changed proxy for geostrophic velocity and updated
1972        verification/lab_sea/results/* accordingly
1973      - removed ADI dynamic solver from pkg/seaice
1974      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1975        they caused a segmentation fault under certain circumstances
1976      - removed unused field WATR
1977    o bug fix in exf-package:
1978      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1979         now reflect that.
1980    o small fixes in the cal-package:
1981      - set reference date to first of January for the 'model'-calendar
1982      - failing of cal_CheckDate in cal_FullDate now actually results in a
1983        warning
1984    o small modifications in exf-package to increase flexibility:
1985      - change climtempfreeze from a constant to a runtime parameter that
1986        is specified in data.exf_clim (default = -1.9)
1987      - introduce runtime parameter windstressmax (default = 2.0) that is
1988        specified in data.exf
1989    o fix in pkg/thsice:
1990      - update Evap (Tsf changes) to be consistent with Latent heat flux
1991      - maintain snow precipitation unchanged (even if Tsf >=0).
1992     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1993    
1994    checkpoint52m_post
1995    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1996      this does not change any of the results, because myIter=0 in swfrac always
1997      lead to jwtype=2 (the default anyway), but the call makes little sense
1998      as a default
1999    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2000    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2001      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2002    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2003    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2004    o extending useSingleCpuIO option to work with new exch2 I/O format
2005      - old-style, missing-tile I/O is still accessible by defining CPP
2006        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2007    o monitor package can write to NetCDF files and/or STDOUT
2008    o fix re-definition bug in MNC_GRID_INIT_ALL()
2009    o doc/api_reference added
2010      - a framework for building an API Reference Manual using all
2011        the "protex" comments embedded in the code
2012      - see pkg/generic_advdiff, pkg/mnc for examples
2013    o MNC:
2014      - make myThid the last argument for all subroutines
2015      - new default for the grid files: NO halos
2016      - add useMNC and other run-time flags
2017      - separate per-file-group handling of the unlimited dimension
2018      - early initialization of MNC w/ flags read at the eeboot stage
2019        and lookup tables set in initialize_fixed
2020      - write all MNC output to a freshly-created directory
2021    o thermodynamics sea-ice (thsice) is now tested with testreport.
2022    o test exp. advect_cs: use the standard cs32 grid ; update output.
2023    o Added functionality to grdchk:
2024      pick global i,j,k position (or nearest wet) where to perform check.
2025    
2026    checkpoint52l_post
2027    o new land formulation:
2028      a) use ground enthalpy as prognostic variable to ensure exact
2029         energy conservation.
2030      b) account for water temperature and for latent heat of freezing
2031         in all processes (rain, run-off, ground storage)
2032      c) compute surface and ground temperature implicitly.
2033    o aim_v23 modification for new land model:
2034      a) Treat separately land / ocean / sea-ice surface fluxes
2035         to allow implicit computation of land & sea-ice surface temp.
2036      b) add snow precipitation.
2037    checkpoint52l_pre
2038    
2039    o fix problem (when 1 tile is empty) in min/max monitor.
2040    o fix bug in timeAve (u,vZetatave in common block)
2041    o no restoring terms under ice for pkg/seaice
2042    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2043    o bug fix for pkg/seaice pickups
2044    o change MNC call locations and add coordinate attributes
2045    o mask vorticity at the corner ; affects global_ocean.cs output
2046    o fix ini_curvilinear_grid ; test CS experiments with mpi
2047    o aim.5l_cs: modify sea-ice fraction input file ; update output
2048    o exf: Adding simple range check routine for exf fields after read
2049    
2050    checkpoint52k_post
2051    o removed top-level directory "diags"
2052      - we migrated these functions to pkg/timeave a long time ago
2053    o fixed bug introduced in pkg/monitor
2054    o accuracy ctrlprec = 32 insuffient for gradient checks using
2055      averaged fields (I/O via cost_averages)
2056      -> use ctrl.h in active_file*.F to control I/O precision.
2057    o paramter list of CALL ADTHE_MAIN_LOOP
2058    o added initial do_the_model_io to ecco
2059    o set all ...Freq to zero after cost_final
2060      taveFreq, dumpFreq, pChkptFreq
2061    o MAIN and ECCO differentiability restored
2062    
2063    checkpoint52j_post
2064    o fix nchklev in tamc.h for global_ocean...
2065    o Bringing flow and store directives up-to-date
2066    o Really weird thing!
2067      call do_the_model_io from the_main_loop with parameters
2068      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2069      TAF places a faulty re-call of initialise_varia
2070      after cost_final call which should not be there!
2071    checkpoint52j_pre
2072    
2073    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2074      error messages
2075    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2076    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2077      debug output
2078    o modfied mdsio_writefield.F to handle non-global files under exch2
2079    o update AIM Cubed-Sphere exp (aim.5l_cs):
2080      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2081    o update AIM Equatorial Channel exp:
2082      use standard aim_v23 pkg and change the SST fields to be more realistic.
2083    o globalFile now works with exch2
2084    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2085      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2086    o limit timeave output for hi-res integrations
2087    
2088    checkpoint52i_post
2089    o removed CPP_EEOPTIONS.h from verification/*/code
2090    o updated the tiling for global_ocean_pressure
2091    checkpoint52i_pre
2092    
2093    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2094      the old pkg/aim).
2095    
2096    checkpoint52h_pre
2097    o shortened offending lines in exch2_send_rx?.template
2098    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2099    o genmake2: add build & execute test for NetCDF code
2100    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2101      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2102    o added useSingleCPUIO flag to monitor.F and mon_out.F
2103    o added temporary hack for sea-ice dynamics on the cube:
2104      metric terms are ignored and it is assumed that
2105      there is no sea-ice on cube faces 1, 2, 4, and 5.
2106    
2107    checkpoint52f_post
2108    o added exch2 cube routines to pkg/exch2
2109    o modified hs94.cs-32x32x5 to use it
2110    o added new grid files to hs94.cs-32x32x5
2111    checkpoint52f_pre
2112    
2113    checkpoint52e_post
2114    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2115      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2116    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2117      to work with implicit vertical advection and AB ;
2118    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2119    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2120     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2121    checkpoint52e_pre
2122    
2123    o fix bug in impldiff when Nr=1 or Nr=2.
2124    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2125    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2126    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2127      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2128    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2129    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2130    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2131    
2132    checkpoint52d_post
2133    o re-tiled many expts to allow comparison in multi-processor mode
2134      - updated output accordingly
2135      - changed hs94.128x64x5 to use intial T from file rather than use the
2136        random number generator
2137    o add infrastructure in model routines for fizhi and gridalt packages
2138    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2139    o changes to permit hi-res, cubed-sphere, configuration
2140      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2141      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2142      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2143        of surface winds for the cube
2144      (A verification experiment, based on global_ocean.cs32x15, but with
2145       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2146       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2147       complete with example surface forcing files and matlab scripts to look
2148       at the output and compare it with that of global_ocean.cs32x15.)
2149    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2150       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2151       to conform to the common rule.
2152    o check-in the first version of the coupler + interfaces for multi-components
2153       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2154       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2155       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2156       - ocean and atmos. share the same horizontal grid (no interpolation).
2157       - exchanges between component and coupler is done in forward_step
2158    o new verification experiment, cpl_aim+ocn:
2159       coupled ocean - AIM atmosphere on cs32 grid.
2160    
2161    checkpoint52d_pre
2162    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2163    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2164    
2165    checkpoint52c_post
2166    o Fixing OPTIONS files for use of exf:
2167      - ALLOW_ECCO not needed
2168      - ECCO_CPPOPTIONS.h should not be included from
2169        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2170        as has been the case in the past
2171      - All cal/exf related options are currently set in
2172        single header file. Should remain so until we
2173        agree on a consistent new policy.
2174    o Removed all CPP options for cal package.
2175      cal has no more CPP options.
2176    o modified STOREs in GAD_ADVECTION
2177    o corrected key comp. for passkey
2178    
2179    checkpoint52b_post
2180    o new version: "thsice" of thermodynamic sea-ice pkg:
2181     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2182     - modify fluxes but do not change theta directly;
2183     - light cleaning of bulk_force pkg (still needed with thsice).
2184     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2185       + output_thsice.txt to test thsice & bulk_force pkgs.
2186    o put back grid & coriolis monitor output.
2187    checkpoint52b_pre
2188    
2189    o call "do_the_model_io" at the beginning (=> dump initial state)
2190    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2191    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2192      (need info on NUMBER_OF_PTRACERS)
2193    o missing PTRACERS headers in some routines
2194    o default tamc.h in pkg/autodiff supposed to crash
2195      to ensure proper customization
2196    
2197    checkpoint52a_post
2198    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2199      - moved surfaceTendencyTice from pkg/seaice to main code
2200      - subroutine FREEZE_SURFACE now limits only surface temperature
2201        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2202        => new output.txt for global_ocean.cs32x15 & global_with_exf
2203      - keep the old version of FREEZE for backward compatibility;
2204        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2205      - corresponding modifs for TAF directives
2206    o added surface flux output variables to TIMEAVE_STATVARS
2207    o time-averaged output for pkg/ptracers
2208    o fix problem with ECCO-related divided adjoint
2209      snapshot file was missing some ad-variables,
2210      but no warning issued by TAF
2211    
2212    checkpoint52a_pre
2213    o some bug fixes for #undef REAL4_IS_SLOW
2214    
2215    checkpoint52 = ecco_c52_e35
2216    o after testing adjoints of checkpoint51u_post
2217    
2218    checkpoint51u_post
2219    o this is the post-merge tag of the ecco-branch
2220      (needs another clean checkout and re-testing)
2221    o various natl_box_adjoint configs and results
2222      but no input fields
2223    o obcs adjoint not yet merged!
2224    o adding ECCO global 1x1 and 2x2 degree configs
2225    o updated/extended some store directives for seaice
2226    o pkg/ecco now containes ecco-specific part of cost function
2227    o top level routines the_main_loop, forward_step
2228      supersede those in model/src/
2229      previous input data.cost now in data.ecco
2230      (new namelist ecco_cost_nml)
2231    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2232    
2233    checkpoint51t_post
2234    o this is the pre-merge tag of the ecco-branch
2235    
2236    checkpoint51s_post
2237    o cleanup: removed various obsolete #define-s
2238    o pkg/grdchk
2239      - renamed 'ph-grd 3' to 'grad-res'
2240      - merged from ecco-branch
2241        (remaining bug fixes for obcs gradient checks)
2242      - additional high-precision output for testreport
2243        (grep for 'precision_grdchk_result')
2244    
2245    checkpoint51r_post
2246    o cleaned up or removed CPP_OPTIONS.h files
2247    o updated results for some of the tests to reflect the new
2248      optfiles (-ieee: -O0 instead of -O3)
2249    
2250    checkpoint51q_post
2251    o cd_code:
2252      - moved cd_scheme.F -> cd_code_scheme.F
2253      - separate read_checkpoint from cd_code_ini_vars.F
2254      - separated cd_code part from write_checkpoint
2255      - updated AD_SOURCE, generated .flow
2256      - added CD_CODE_VARS.h to the_main_loop
2257      - Moving cd_code specific store dir.s to pkg/cd_code
2258    o ctrl package totally restructured
2259      - pack/unpack now optional and decoupled from
2260        xx_/adxx_ I/O
2261      - ctrl_pack/unpack cleaned
2262        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2263      - confined inclusion of AD_CONFIG.h to where necessary.
2264    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2265    
2266    checkpoint51p_post
2267    o create initial cd_code package
2268      - WARNING: the initialization of fields within packages
2269        is broken because INI_FIELDS (where READ_CHECKPOINT is
2270        called) is called *before* PACKAGES_INIT_VARIABLES.
2271        This seems to be backwards since
2272        1) its important to initially zero the entire field including
2273           the "halo" region
2274        2) zeroing needs to be done *before* reading pickup info
2275           and the pickup call might or might not happen in any
2276           particular run
2277      - this needs an overhaul for R2
2278    o cleanup verification/*/code/GMREDI_OPTIONS.h
2279    o cleanup testreport
2280    
2281    checkpoint51o_post
2282    o bringing AD-related verif's up to date with genmake2
2283      - carbon/
2284      - global_ocean.90x40x15/
2285      - hs.94.1x64x5/
2286      - (front_relax/ )
2287    o (more) consistent directory structure for AD-related verif.'s
2288    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2289    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2290    o bug fix in find_alpha.F for MDJWF:
2291      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2292        change rho -> rho-rhoConst
2293      - replace call find_rho to find_rhonum
2294    o initialisation of rFlx extended to full array (required by TAF)
2295      and shifted to thermodynamics
2296    o removed PTRACERS.h in ptracers routine
2297    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2298    o Correcting initialisations for fVerU, fVerV.
2299    o helping TAF to recognize dependency on kUp for
2300      fVerU, fVerV
2301    o Replacing delZ by delR in pkg/ctrl/
2302    checkpoint51o_pre
2303    
2304    o undid all of cp51 pending some cleanups and discussion
2305    o added the [#include "AD_CONFIG.h"] statement to all files that need
2306       it for adjoint/tl #defines
2307     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2308     o removed tools/genmake since it no longer works
2309    
2310    checkpoint51n_post
2311    o modifications to make FREEZE flux visible to pkg/kpp
2312      - moved surfaceTendencyTice from pkg/seaice to main code
2313      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2314      - subroutine FREEZE now limits only surface temperature
2315        (this means new output.txt for global_ocean.90x40x15,
2316         global_ocean.cs32x15, and global_with_exf)
2317    o added surface flux output variables to TIMEAVE_STATVARS
2318    
2319    checkpoint51n_pre
2320    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2321    o added [#include "AD_CONFIG.h"] to all files that use the following
2322      defines:
2323      - ALLOW_ADJOINT_RUN
2324      - ALLOW_TANGENTLINEAR_RUN
2325      - ALLOW_ECCO_OPTIMIZATION
2326    
2327    checkpoint51m_post
2328    o incorporating changes to get TAMC/TAF working in genmake2
2329      - added new TAMC/TAF targets to the Makefile
2330      - various cleanups related to package handling
2331      - these changes should have no impact on the forward model
2332    
2333    checkpoint51l_post
2334    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2335     - faster algorithm for cal_addtime.F
2336     - higher precision arithmetic, where needed
2337     - pkg/exf *startdate variables changed from calendar date to
2338       model integration time
2339    
2340    checkpoint51l_pre
2341    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2342    o enable to apply restoring on S & T only in a latitude band.
2343    o update output (external_forcing_surf modif. change truncation errors)
2344       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2345    
2346    checkpoint51k_post
2347    o change default to: useNHMTerms=.FALSE.
2348     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2349       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2350     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2351        exp1, ideal_2D_oce
2352     - change data file of oceanic exp (leave the results unchanged for now)
2353       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2354    o set gravitySign automatically according to the vertical coordinate used
2355      (and change sign: back to "logical" value: +1 when R increases downward)
2356    o added an include barrier to the default CPP_OPTIONS.h and
2357      removed the #include "PACKAGES_CONFIG.h" from it
2358    o fix a bug in mom_fluxform (from chk51j_post)
2359    
2360    checkpoint51j_post
2361    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2362    o adjusted some flow directives (dynamics, thermodynamics)
2363    o added cubed-sphere case to test cost function
2364    o heckpoint_lev?_directives.h now include
2365      pkg-specific directives, whenever those are enabled.
2366    o Moving pkg-specific flow directives to corresponding pkg
2367      Moving pkg-specific differentiation list to corresponding pkg
2368      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2369      ---> conventions are
2370           - pkg_ad.flow
2371           - pkg_ad_diff.list
2372           - pkg_ad_check_lev?_dir.h
2373    
2374    checkpoint51i_post
2375    o merge of the branch-genmake2
2376      - knowingly breaks the older genmake
2377      - automatic generation of all ALLOW_${PKG_NAME} defines
2378      - new testreport supersedes older testscript
2379    o large number of package inclusion and header cleanups
2380    checkpoint51i_pre
2381    
2382    o new output for adjoin of global ocean vector invariant
2383    o fix for checkpoint of thermodynamic seaice and bulk_force
2384    o Steph gchem various cleanups
2385    
2386    checkpoint 51h_pre
2387    o fixed some single quotes
2388    o modify gchem pkg to be more versatile
2389    o modifications to clean up dic pkg
2390    o add pkg/cfc
2391    
2392    checkpoint51g_post
2393    o provide links for ARPACK and ADM*TLM
2394    o start removing verification/vero/
2395    o update AD-related stuff
2396      (in particular some IF-statements in model/src/ routines)
2397    o adding to verification/global_ocean.90x40x15/ adjoint of
2398      vector invariant setup
2399    
2400    checkpoint51f_post
2401    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2402    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2403      of tracer Green's fucntions for ocean inversion project.
2404    
2405    checkpoint51f_pre
2406    o Added on-the-fly spatial interpolation capability
2407        "USE_EXF_INTERPOLATION" to pkg/exf.
2408      - This is a temporary Cartesian-grid hack until
2409        the super-duper ESMF coupler becomes available.
2410      - See verification/global_with_exf/README for usage example.
2411      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2412        flags and modified pkg/seaice accordingly.
2413    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2414        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2415        non-local transport term.
2416    
2417    checkpoint51e_post
2418    o pkg/mom_vecinv:
2419      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2420      - add time-ave diagnostic of vorticity advection.
2421    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2422    o atmospheric geopotential: - include water vapor effect;
2423                                - use p^kappa in p* scaling.
2424    o land pkg: read initial state from files.
2425    o AIM : add stratospheric drag in the upper level
2426    
2427    checkpoint51d_post
2428    o change function ILNBLNK (=> last non-blank char.) to return zero
2429      (instead of the string length) when the string. char is empty
2430    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2431    o modif's to restore TAMC compatibility
2432      - avoid "_d" constructs in PARAMETER declarations
2433      - avoid interrupting lines by comment lines
2434    o Use cluster local disks for purely local I/O
2435      vs. globally visible disks needed for ctrl stuff
2436      (merged from ecco-branch)
2437      - new active_file_loc... and mdsio_..._loc routines
2438      - affected packages: autodiff, ctrl, grdchk, mdsio
2439    
2440    checkpoint51c_post
2441    o introducing integer flag debugLevel
2442      - debLevZero: suppress all output
2443      - debLevA: standard
2444      - debLevB: equivalent to current debugMode=.TRUE.
2445    o introducing pathname variable mdsioLocalDir for mdsio
2446      that can be specified at runtime
2447      (relevant for cluster I/O to local disk)
2448    `
2449    >>>checkpoint51b_post
2450    adjoint of ptracers
2451    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2452    o extended state in checkpoint_lev?, etc.
2453    o alternative ctrl/cost with tr1 or ptracer
2454    o new comlev1_bibj_ptracers
2455    o new ptracers.flow
2456    o made ptracers_forcing same as external_forcing_s
2457    o added verification for adjoint with ptracers
2458      - adm. grdchk fail so far
2459      - tlm. grdchk OK
2460      - checked tapelev/comlev recomputations: OK
2461    <<<checkpoint51b_pre
2462    
2463    checkpoint51a_post
2464    o added code for biogeochemistry package
2465      - new pkgs: dic, gchem
2466      - new subroutine in ptracers
2467    o modify code for biogeo packages
2468      - in model/src and pkg/ptracers
2469    
2470    checkpoint51
2471    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2472      - autodiff, ctrl, exf, grdchk, seaice
2473      kept separate packages
2474      - cost, ecco, obcs
2475    o updating verification/internal_wave, verification/lab_sea
2476      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2477    
2478    checkpoint50i_post
2479    o Preparing next differentiable checkpoint and sync
2480      of MAIN vs. ecco-branch
2481      - 1st step: this one is differentiable
2482      - 2nd step: next(! not this) checkpoint will have updated packages
2483                  from ecco-branch)
2484    
2485    checkpoint50h_post
2486    o new package "land": provide surface BC for AIM.
2487    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2488    o AIM: use true log-P extrapolation for near surface temp (= as in
2489        F.Molteni paper) ; update aim.5l_cs output.
2490    o New variable in PARM03 for more flexible pickups
2491    o somewhat cleaned package initialisation sequence for
2492      ctrl/ cost/ ecco/ in packages_... routines
2493    
2494    checkpoint50g_post
2495    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2496      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2497      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2498        made the default because of faster convergence than ADI
2499    
2500    checkpoint50f_post
2501    o exf totally restructured
2502      - replaced all exf_set_ routines by one generic exf_set_gen.F
2503        and made sure it's still differentiable
2504      - split exf_getffields.F into new exf_bulkformulae.F
2505      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2506      - updated adjoint/makefile and relevant verif. accordingly
2507    
2508    checkpoint50f_pre
2509     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2510          + change Evap over land. (update aim.5l_cs output)
2511     o added missing .cvsignores and made uniform across expts
2512     o changed configuration of tidal_basin_2d expt
2513     o added pkg/debug functions for tracing code in fatal crashes
2514     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2515     o new fn in pkg/monitor to stop model if solution grows too big
2516     o removed lots of single quotes from comments
2517    
2518    checkpoint50e_post
2519    o make KPP work with PTRACERS
2520     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2521       nearly a copy of kpp_transport_s
2522     - there is no analogue to SurfaceTendencyS, so I have to use
2523       gPtr(of the surface layer) instead
2524    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2525    checkpoint50e_pre
2526    
2527    checkpoint50d_post
2528    o change kpp output from multiple-record state files to single-record state
2529      files analogous to write_state.F
2530    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2531      analogous to the cg2d-related output.
2532    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2533      so that writing to internal file fn (with length 512) fails.
2534    checkpoint50d_pre
2535    
2536    checkpoint50c_post
2537    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2538    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2539    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2540    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2541    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2542    
2543    checkpoint50c_pre
2544    Merging from release1_p13:
2545    o bug fix for pkg/seaice dynamic solver
2546    o Added SEAICE_initialHEFF to pkg/seaice
2547    
2548    checkpoint50b_post
2549    o store u*,v* in gU,V instead of in guNm1,gvNm1
2550    o in order to put the momForcing out of the Adams-Bashforth:
2551      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2552      to timestep.F
2553    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2554    o re-generate output for highly sensitive test-exp:
2555       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2556    
2557    checkpoint50b_pre
2558    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2559    o corrected CPP option mismatch in exf_Bulk... functions for case
2560      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2561    
2562    checkpoint50a_post
2563    o Bug fix for merging between c50 and KPP.
2564      ikey was passed from thermodynamics to kpp_calc via
2565      common block rather than being recomputed in kpp_calc,
2566      in contradiction with new key itdkey.
2567      New key ikppkey created, and tamc.h headers updated.
2568    
2569    checkpoint50
2570    - 2nd step of merge with ecco-branch:
2571      merge changes in ecco-branch back into main trunk
2572    - bug fix in find_alpha
2573    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2574    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2575    - merged some sliced AD support routines
2576    
2577    checkpoint49
2578    merged from ecco-branch:
2579    o exf:
2580      - Enable initialisation of forcing fields to constant
2581        (runtime) values.
2582      - in exf_getffields.F
2583        Reduce i-/j-loop to interior domain, discarding overlaps.
2584        That also fixes wrong TAF-key computations for key_1, key_2
2585        with bulf formulae.
2586      - exf_init.F modify #ifdef for exf_init_evap
2587      - exf_getffieldrec.F, ctrl_getrec.F
2588        The following INT-usages are not safe:
2589          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2590          fldcount = int(fldsecs/fldperiod) + 1
2591        and were modified.
2592    o autodiff: checkpoint_lev...
2593      - updated storing for bulk formulae (some arrays were missing)
2594      - added state for seaice package
2595      - synchronized with main branch
2596    o DIVA:
2597      Modif.s in
2598      - the_main_loop.F
2599      - the_model_main.F
2600      and added cost_final_restore.F cost_final_store.F
2601      o With these changes, it is possible to fully separate
2602        the first forward run to compute the cost function (mdthe_main_loop)
2603        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2604        into separate model executions.
2605        This enables better tuning of DIVA to given queue sizes.
2606      o Loss of cost function value in consecutive DIVA runs is
2607        fixed by storing to 'costfinal' file.
2608      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2609        beginning/end of adjoint integration is accounted for.
2610      The current changes apply to TAF-1.4.26.
2611      TAF has one remaining bug, requiring one manual change
2612      (see MITgcm manual).
2613    o cal: synchronized between MAIN and ecco-branch
2614    
2615    checkpoint48i_post
2616    o Changes to restore differentiability of code w.r.t. previous tag
2617      (mostly adding new routines to make list and replacing
2618      pressure by totPhiHyd).
2619    o Updated and merged grdchk package
2620      - has both ADM and TLM checks
2621      - works for single- and multi-proc.
2622      - output cleaned
2623      - worked successfully for parallel DIVA
2624    o genmake:
2625      - Adding -platform=SP4
2626      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2627    o Modif. for DIVA:
2628      ctrl_unpack should not be called in intermediate DIVA interval.
2629      (similar thing would apply for active files such as
2630      tbar, sbar, psbar, which should not be reinitialised;
2631      only relevant for ecco-branch)
2632    
2633    checkpoint48h_post
2634    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2635    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2636    o Added SEAICE_initialHEFF to pkg/seaice
2637    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2638    
2639    checkpoint48g_post
2640    --- EOS:
2641    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2642      store total Potential in totPhyHyd for diagnostics & EOS.
2643    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2644    --- Pressure/geopotential gradient:
2645    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2646    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2647      ( changes results of global_ocean_pressure )
2648    o NLFS + z-coord.: add eta*Rho' contribution.
2649    o accurate phiHyd when using interface-W at the middle between 2 centers
2650     ( changes results of ideal_2D_oce )
2651    o includes r* 2nd term in potential gradient.
2652    
2653    checkpoint48f_post
2654    Merging from release1_p12:
2655    o Modifications for using pkg/exf with pkg/seaice
2656      - improved description of the various forcing configurations
2657      - added basic radiation bulk formulae to pkg/exf
2658      - units/sign fix for evap computation in exf_getffields.F
2659      - updated verification/global_with_exf/results/output.txt
2660    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2661      (SBO) core products, including oceanic mass, center-of-mass,
2662      angular, and bottom pressure (see pkg/sbo/README.sbo).
2663    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2664      to avoid negative values in shallow regions.
2665      - updated verification/natl_box/results/output.txt
2666      - updated verification/lab_sea/results/output.txt
2667    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2668    o Added useSingleCpuIO option (see PARAMS.h).
2669    o Updated useSingleCpuIO option in mdsio_writefield.F to
2670      work with multi-field files, e.g., for single-file pickup.
2671    o pkg/seaice:
2672      - bug fix in growth.F: QNET for no shortwave case
2673      - added HeffFile for specifying initial sea-ice thickness
2674      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2675    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2676      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2677    o pkg/seaice:
2678      - adjoint-friendly modifications
2679      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2680    
2681    checkpoint48e_post
2682    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2683    o dynamics: change definition of computational domain & adapt mom_fluxform
2684      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2685    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2686        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2687        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2688        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2689        inverted_barometer solid-body.cs-32x32x1
2690      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2691    
2692    checkpoint48d_post
2693    o in preparation for r*:
2694     a) use pre-computed gradient of hydrostatic potential:
2695        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2696     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2697        => affects results of glob_oce_pressure (different truncation error)  
2698      update output.txt of ideal_2D_oce & global_ocean_pressure
2699    
2700    checkpoint48d_pre
2701    o in preparation for r*:
2702      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2703      pass the 2 comp. of the grad. as arguments to momentum S/R.
2704      but for the moment, only used if it does not change the results.
2705    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2706    
2707    checkpoint48c_post
2708    Modifications in treatment of initial flux forcing controls
2709    to avoid extra storing of flux fields.
2710    
2711    checkpoint48c_pre
2712    o Added tidal_basin_2d experiment (currently 1D!)
2713    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2714    
2715    checkpoint48b_post
2716    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2717     (modification to pressure gradient not yet implemented)
2718    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2719      (for U & V) that are used for vertical advection of momentum.
2720    
2721    checkpoint48a_post
2722    o In preparation for r*, use temp. array to compute vertical transport
2723       in flux-form momentum pkg. => change results of few test-exp.
2724      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2725                        lab_sea, natl_box & plume_on_slope
2726    
2727    checkpoint48
2728    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2729    
2730    checkpoint47j_post
2731    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2732    o moved adexch from forward_step to addummy_in_stepping
2733    o added exch in ctrl_map_...
2734    o aveFreq.=0. at end of cost_final to avoid overwrite in
2735      reverse checkpointing loop
2736    o Yet more changes in gmredi:
2737      * adgmredi_calc_tensor
2738        avoiding all recomputation of gmredi_slope_limit
2739      * adgmredi_x/y/rtransport
2740        added flag for excessive storing to avoid recomp. of
2741        u/v/rtans, dTdx/y/z
2742        -> this is not really necessary and very memory-consuming
2743      * adgmredi_slope_psi:
2744        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2745      * gmredi_slope_limit
2746        re-activated full calculation of taperfct for case 'ac02'
2747    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2748    
2749    checkpoint47i_post
2750    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2751    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2752      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2753    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2754    o gmredi: fix few bugs.
2755    
2756    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2757    This will be a good checkpoint to plug into the ecco-branch.
2758    o few modif.'s to get latest version adjointed
2759      (mainly kick out code in ini_linear_phisurf)
2760    o modif's to run adjoint with exactConserv
2761    o case GM_BOLUS_ADVEC should be cleaned
2762      S/R gmredi_slope_psi should be cleaned
2763    o verification/carbon now has exactConserv=.TRUE.
2764    
2765    checkpoint47g_post
2766    o time-average AIM output: becomes independent from statvars time-average
2767      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2768    o After TAF bug fix:
2769      Tested adjoint of gmredi package.
2770      Tests were done with checkpoint47 rather than with latest
2771      checkpoint47f_post since the latter is broken for the adjoint
2772      verification/carbon/ contains both ADM and TLM gradient checks.
2773    Here they are, before they get changed/lost/stolen.
2774    Mostly modif.'s to fix numerical sensitivities.
2775    Gradient checks OK for
2776    - GM_taper_scheme:
2777      * clipping
2778      * ac02
2779      * linear
2780      * glw91
2781      * dm95
2782      * ldd97
2783    - GMREDI_OPTIONS:
2784      * GM_VISBECK_VARIABLE_K
2785      * GM_NON_UNITY_DIAGONAL
2786      * GM_EXTRA_DIAGONAL
2787      * GM_BOLUS_ADVEC
2788    in conjunction with data.gmredi parameters to be checked in
2789    in a few minutes under verification/carbon/code/
2790    
2791    checkpoint47f_post
2792    Merging from release1_p10:
2793    o modifications for using pkg/exf with pkg/seaice
2794      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2795        and SEAICE_EXTERNAL_FLUXES
2796      - pkg/exf CPP options EXF_READ_EVAP and
2797        EXF_NO_BULK_COMPUTATIONS
2798      - usage examples are Experiments 8 and 9 in
2799        verification/lab_sea/README
2800      - verification/lab_sea default experiment now uses
2801        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2802    
2803    checkpoint47e_post
2804    o created a tag prior to creating a branch
2805    
2806    checkpoint47d_post
2807    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2808      at the bottom boundary had an erroneous half slip boundary condition
2809    o added bottom drag and no slip boundary condition capabilities to
2810      oceanic pressure coordinates code
2811    o added new verification experiment global_ocean_pressure, this experiment is
2812      also described in the tutorial section of the manual
2813    checkpoint47d_pre
2814    
2815    checkpoint47c_post
2816    o Added a verification experiment for a global cubed-sphere ocean run
2817      -  verification/global_ocean.cubed32x32x30
2818      -  uses pkg/therm_seaice and pkg/bulk_forcing
2819    
2820    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2821    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2822      when using P-coordinate; only implemented for atmospheric config.
2823    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2824      NOTES: requires option NONLIN_FRSURF to be "#define".
2825    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2826    
2827    checkpoint47b_post
2828    Merging from release1_p9:
2829    o pkg/seaice
2830      - removed GOTO's and added taf directives
2831      - double precision constants to reduce the g77 (Linux)
2832        to F77 (SGI) differences reported in release1_p8
2833    o tools/genmake
2834      - added SGI options
2835    o verification/testscript
2836      - updated to that of checkpoint47a_post
2837    o verification/global_ocean.90x40x15/input/eedata
2838      - modified for SGI f77 compatibility
2839    o verification/lab_sea
2840      - added description of sea-ice model
2841      - added missing matlab routines
2842      - added test of thermodynamics parallelization
2843    
2844    checkpoint47a_post
2845    o new pkg: aim_v23
2846     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2847       for now, keep the same surface forcing as before.
2848     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2849     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2850     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2851    o add diagnostic of surface correction term in monitor output
2852    
2853    o bulk_force and therm_seaice
2854    - Two packages:  bulk_force (Bulk forcing)
2855      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2856    - Earlier integration from Stephaine Dutkiewicz
2857      and Patrick Heimbach.
2858    - Two ifdef statements for compile time,
2859       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2860    
2861    checkpoint47
2862    differentiable version of checkpoint46n_post
2863    o bug fix in quasihydrostaticterms
2864    o * "clean" adjoint code (in terms of extensive recomputations)
2865        can now be obtained for all GMREDI options (i.e. for
2866        - GM_VISBECK_VARIABLE_K
2867        - GM_NON_UNITY_DIAGONAL
2868        - GM_EXTRA_DIAGONAL
2869        - GM_BOLUS_ADVEC )
2870      * However, wrong gradient check problem remains unsolved.
2871      * New CPP options have been introduced for different
2872        tapering schemes
2873    o external_fields_load now part of differentiation list
2874    o pressure needs multiple storing;
2875      would be nice to have store_pressure at beginning or
2876      end of forward_step, e.g. by having phiHyd global (5-dim.)
2877      (NB: pressure is needed for certain cases in find_rho,
2878      which is also invoked through convective_adjustment).
2879    o recomputations in find_rho for cases
2880     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2881    o #define ATMOSPHERIC_LOADING should be differentiable
2882    o ini_forcing shifted to begining of initialise_varia
2883    o Incorporating QNVS line search routines into MITgcm
2884      (this is separate code, and therefore not under pkg)
2885      lsopt/, optim/
2886    o Updated verification/carbon/
2887      - #define GM_VISBECK_VARIABLE_K
2888      - GM_taper_scheme    = 'ldd97'    
2889    
2890    checkpoint46n_post
2891    Merging from release1_p8:
2892    o verification/natl_box:
2893      updating new external_fields_load routine
2894    o New package: pkg/seaice
2895      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2896      The sea-ice code is based on Hibler (1979-1980).
2897      Two sea-ice dynamic solvers, ADI and LSR, are included.
2898      In addition to computing prognostic sea-ice variables and diagnosing
2899      the forcing/external data fields that drive the ocean model,
2900      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2901      The implied surface heat flux is then stored in variable
2902      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2903      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2904      non-local transport term.  Because this call precedes model
2905      thermodynamics, temperature under sea-ice may not be "exactly" at
2906      the freezing point by the time theta is dumped or time-averaged.
2907      N.B.: fairly large differences in accuracy occur across
2908            different platforms/compilers; comparison between
2909            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2910            generated output gives:
2911       T           S           U           V
2912      C D M    c        m  s        m  s        m  s        m  s
2913      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2914      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2915      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2916    
2917      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2918    o GAD:
2919      - generated new common blocks to account for call of
2920        same gad routines with differing traceridentities
2921        (needed to modify tracerIdentity indices in GAD.h)
2922      - generated separate common blocks for case useCubedSphereExchange
2923        (Department of Futurology)
2924      - parameter lists to gmredi_?transport: added tracerIdentity
2925      - added new key indices to tamc.h
2926    o external_fields_load:
2927      - added this routine to TAF list
2928      - needed to make some common blocks global and additional storing
2929        along the same lines as exf package (checkpoint_lev?_directives.h)
2930    o exf:
2931      updated external forcing package
2932      - bug fixes carried over from ecco-branch
2933        (missing OBCS_OPTIONS.h in two routines)
2934      - enable easy to use "no forcing".
2935      - added exf I/O for atmospheric loading
2936      - added exf I/O for runoff data
2937      - transfered scaling between exf <-> MITgcm to exf namelist
2938    o Adding new verification experiment global_with_exf.
2939      This verification experiment is almost identical to the
2940      global_ocean.90x40x15 experiment, except that it uses
2941      the exf (and cal) package instead of the
2942      external_fields_load routine (cf README file).
2943    
2944    checkpoint46m_post
2945    o modified testscript to return -- when there are no lines of "%MON" output
2946    o added new flag "quasiHydrostatic" for QH mode
2947      and new routine quasihydrostaticterms()
2948    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2949      New routine: mom_u_coriolis_nh()
2950    o fixed sign of non-hydrostatic metric terms in u and v equations.
2951      Depend on correct sign of gravitySign.
2952    o added work.pc* to .cvsignore in aim directories using ifc
2953    o introduced flag for controllin non-hydrostatic metric terms
2954    o removed gravitySign from PARM04
2955    o switched to g77/ifc from pgf77 in aim experiments
2956    
2957    checkpoint46l_post
2958    o made convective adjustment work with pressure coordinates:
2959     - changed the direction of k-loop in convective_adjustment.F for the
2960       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
2961     - adjusted the reference pressure k-index in convective_adjustment.F
2962     - adjusted the convection condition in convect.F (in analogy to
2963       calc_ivdc.F)
2964     - convective_adjustment no longer computes anything on the halos
2965     - removed the warnings about negative salinity from find_rho.F and
2966       find_alpha.F; instead the new routine look_for_neg_salinity, called
2967       at the beginning of find_rho, find_alpha, and find_beta, does a
2968       check of the entire slice, if CPP-option
2969       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
2970    checkpoint46l_pre
2971    
2972    checkpoint46k_post
2973    o fixed the verification/global_ocean.90x40x15 experiment:
2974     - new bathymetry (the world according to A., JMC, and M.)
2975     - new initial fields and forcing fields (*.bin files)
2976     - new POLY3.COEFFS (for the next release one should switch to a full
2977       equation of state: JMD95P or MDJWF)
2978     - fixed several errors and redundancies in the data file
2979     - experiment uses looped cells
2980     - added matlab directory with diagnostic scripts for plotting of output
2981    
2982    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
2983     - read AIM physics parameters from a file (data.aimphys)
2984     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
2985    
2986    checkpoint46j_post
2987    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
2988    o move wVel computation at the end of the time step, in S/R integr_continuity
2989    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
2990    o update timeave pkg for wVel diagnostic.
2991    checkpoint46j_pre
2992    
2993    checkpoint46i_post
2994    o Clean up AIM package (and keep the results unchanged):
2995      include CPP_OPTION and use IMPLICT NONE in all routines ;
2996      declare all the variables _RL ; use _d 0 for all numerical constants.
2997      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
2998    
2999    checkpoint46h_post
3000    o cleaned up the use of rhoNil and rhoConst.
3001      - rhoNil should only appear in the LINEAR equation of state, everywhere
3002        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
3003        and the dynamical equations are all divided by rhoConst
3004    o introduced new parameter rhoConstFresh, a reference density of fresh
3005      water, to remove the fresh water flux's dependence on rhoNil. The default
3006      value is 999.8 kg/m^3
3007    o cleanup up external_forcing.F and external_forcing_surf.F
3008      - can now be used by both OCEANIC and OCEANICP
3009    checkpoint46h_pre
3010    
3011     Added code to convert surface volume flux (fresh water) into
3012     a mass flux when using P coordinates in the ocean (OCEANICP).
3013     Note: It assumes you have set rho0=rhoConst=density of fresh water.
3014    
3015    checkpoint46g_post
3016    o Include a new diagnostic variable phiHydLow for the ocean model
3017      - in z-coordinates, it is the bottom pressure anomaly
3018      - in p-coordinates, it is the sea surface elevation
3019      - in both cases, these variable have global drift, reflecting the mass
3020        drift in z-coordinates and the volume drift in p-coordinates
3021      - included time averaging for phiHydLow, be aware of the drift!
3022    o depth-dependent computation of Bo_surf for pressure coordinates
3023      in the ocean (buoyancyRelation='OCEANICP')
3024      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
3025        Theta, Salinity, and Pressure in the parameter list. This routine is
3026        presently contained in find_rho.F. This routine does not give the
3027        correct density for 'POLY3', which would be a z-dependent reference
3028        density.
3029    o cleaned up find_rho
3030      - removed obsolete 'eqn' from the parameter list.
3031    o added two new verification experiments: gop and goz
3032      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
3033    checkpoint46g_pre
3034    
3035    checkpoint46f_post
3036    o Enable tangent linear (forward mode) gradient checks:
3037      - extended active file handling to g_... files
3038      - added TANGENT_SIMULATION to theSimulationMode
3039      - extended grdchk package accordingly
3040    o added tangent linear setup in verification/carbon/code_ftl
3041    o added adjoint setup in verification/front_relax/code_ad
3042    
3043    checkpoint46e_post
3044    o Added new equation of state -> MDJWF
3045      - EOS of McDougall et al., 2002, JAOT, submitted
3046      - caveat: the equation of state is only valid for a smaller (more
3047        realistic?) range of values than JMD95P/Z and UNESCO
3048      - added masks to the calculation of pressure in store_pressure
3049      - added more check values for density in check_eos (ini_eos.F), some of
3050        the old check values are out of the range of the MDJWF-eos, so don't
3051        expect perfect matches for those
3052    checkpoint46e_pre
3053    
3054    checkpoint46d_post
3055    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
3056      'OCEANICP', also initialised field pressure correctly in ini_eos in the
3057      case of pressure coordinates. eosType='JMD95Z' in
3058      combination with buoyancyRelation='OCEANICP' now causes an error.
3059    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3060      in find_alpha/beta.
3061    checkpoint46d_pre
3062    
3063    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3064      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
3065    
3066    checkpoint46c_post
3067    o Changes necessary for ocean in p-coordinates
3068     -  Added new buoyancy relation = 'OCEANICP'
3069     -  Added new parameters = gravitySign (this used to be contained inside
3070        the factor dRdZ which I added when we first switched to R coordinates).
3071     X GM/Redi is not compatible (yet)
3072     X bottom drag and no-slip need to be debugged.
3073    checkpoint46c_pre
3074    
3075    checkpoint46b_post
3076    o Added new equation of state -> JMD95Z and JMD95P
3077      - EOS of Jackett and McDougall, 1995, JAOT
3078      - moved all EOS parameters into EOS.h
3079      - new routines ini_eos.F, store_pressure.F
3080    o Added UNESCO EOS, but not recommended because it requires
3081      in-situ temperature (see JMD95)
3082    o Modified formatting for knudsen2.f in utils/knudsen2 and added
3083      unesco.f to be used with POLY3
3084    checkpoint46b_pre
3085    
3086    checkpoint46a_post
3087    o Added (atmospheric) pressure loading
3088      - new field in FFIELDS.h, etc...
3089      - new cpp flag ATMOSPHERIC_LOADING
3090    o Changed hFacC to _hFacC in calc_phi_hyd.F
3091    o Added SHORTWAVE_HEATING to some files for consistency
3092    checkpoint46a_pre
3093    
3094    checkpoint46
3095    further merges from release1_p5
3096    o new ctrl package
3097      - adopted from ECCO environment to enable optimization
3098      - added Eliassen Palm fluxes to controls
3099    o added Eliassen Palm flux controls to gradient check package
3100    o cost package
3101      - Compatible with new ctrl package
3102      - added Eliassen Palm cost hooks
3103      - modif's of existing cost functions
3104    o Adjoint-related bug fixes in kpp:
3105      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
3106      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
3107    o autodiff package
3108      - flow directives:
3109        + new for S/R do_the_model_io
3110        + enhanced for S/R checkpoint
3111        + new gmredi.flow
3112      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
3113        disable adcommon.h/g_common.h by default.
3114      - fixed problem for adjoint of global_max
3115    o modified verification/carbon/
3116    o New setup for adjoint of global_ocean
3117    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
3118    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
3119    o incorporated hooks for sponge layer code (external_forcing.F)
3120    
3121    checkpoint45d_post
3122    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
3123    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
3124      (affects plume_on_slope "cg2d" output)
3125    o add new parameter deltaTfreesurf for free-surface time stepping
3126    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
3127    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
3128    o change phiMin in exp1 (to agree with documentation)
3129    o add new flags:
3130     - T,S forcing inside/outside Adams-Bashforth
3131     - turn off temp,salt advection and/or forcing
3132     - for each tracer, define internal flag for multiDimAdvection & A-B
3133    o monitor: change definition of KE to check conservation of Energy
3134    
3135    checkpoint45c_post
3136    o Removed f90 comments ("!")
3137    o Modified initialisations to enable exf package for MITgcm
3138      (without invoking ECCO_PACKAGE).
3139    o modifications to gradient check package (Martin Losch)
3140      - enable centered differences
3141      - modified format of standard output
3142    
3143    checkpoint45b_post
3144    o cleaned exchange calls in cg2d
3145    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
3146    o included CPP option SINGLE_LAYER_MODE in thermodynamics
3147      to configure barotropic setup (Martin Losch)
3148    o moved some initialisations within bi,bj loop in dynamics
3149      (TAF flow dependency)
3150    o in initialise_varia, moved call packages_init_variables
3151      before convective_adjustment_init
3152      (corresponding adjustment of TAF tape initialisation).
3153    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
3154    
3155    checkpoint45a_post
3156    o compute Rho over the whole domain (extend iMin,jMin indices)
3157    o specific exchange for X-slice domain (case Ny=1)
3158    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
3159    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
3160    
3161    checkpoint44h_post = checkpoint45
3162    o Fix to restore differentiability:
3163      place at which packages_init_variables is called in
3164      initialise_varia is crucial for reverse control flow.
3165    o modifications in GMRedi to enable stable adjoint
3166      (corresponding modif's in thermodynamics, dynamics)
3167    o added missing hook for sponge layer code in external_forcing
3168    o modified test cost functions
3169    o storing in gad_advection (plus removal of write(0,*)!
3170    o missing headers TR1.h added in convective_adjustment routines
3171    o errorMessageUnit set non-equal zero in eeboot
3172      (conflict on some platforms, e.g. IBM SP3)
3173    o modified carbon verif.
3174    
3175    checkpoint44h_pre
3176    o vertical grid option: allow to put the Interface at the middle between
3177      2 cell-centers ; replace delZ in pkg/kpp by drF.
3178    o GM Advective form: Tracers are advected using the residual transport (=
3179      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
3180    
3181    checkpoint44g_post
3182    o fix surface correction term in multiDimAdvection (affects plume_on_slope
3183      results) ; ifdef missing in thermodynamics.F
3184    
3185    checkpoint44f_pre,checkpoint44f_post
3186    o added PTRACERS package
3187      This allows an arbitrary number of passive tracers to be integrated
3188      forward simultaneously with the dynamicaly model.
3189      + Implemented so far:
3190        - basic forward algorithm (time-stepping, advection, diffusion, convection)
3191        - I/O and checkpointing
3192        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
3193      + Not implemented so far:
3194        - KPP
3195        - OBCS
3196      + No specific example supplied (yet) but global_ocean.90x40x15 has the
3197        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
3198        line in data.pkg.
3199      + This package is disabled by default since it increases storage.
3200    
3201    
3202    o testscript: added -cleanup option
3203    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
3204                 b) enable to filter 2D fields.
3205    
3206    checkpoint44e_pre,post
3207    o re-wrote convective adjustment to use pre-calculated weights
3208      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
3209      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
3210      Original calls to convect() still in place.
3211    
3212    chkpt44d_pre,post
3213    o added missing EXCLUDE_MONITOR flags
3214    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
3215      (incompatible typ in MIN/MAX expressions caused problems
3216      on IBM SP3)
3217    o in genmake added variable MAKEDEPEND
3218      plus resetting for case SunOS
3219    o added timer_stats.c routine for IBM SP3
3220    o removed variables in dynamics
3221    !!! I forgot to create tag chkpt44d_pre !!!
3222    !!! But chkpt44d_pre = chkpt44c_post    !!!
3223    
3224    o real fresh water flux implemented with non-linear free-surface.
3225    
3226    chkpt44c_pre,post
3227    o few fix (mask in shap_s2, EmPmR in external_field_load,
3228      USE_NATURAL_BCS in solve_for_P);
3229    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
3230    
3231    checkpoint44b_pre/_post
3232    o merge of relevant stuff from the ecco-branch:
3233      - genmake: removed $S64 overwrite for case SunOS
3234      - pkg/exf: update and corrections for field swapping and obcs
3235      - pkg/ecco: parameter lists for the_model_main, the_main_loop
3236                  harmonized between ECCO and MITgcm
3237      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
3238                      updated checkpointing_lev... lists for obcs
3239      - model/src: minor changes in forward_step, plot_field
3240                   added directive for divided adjoint in the_main_loop
3241      - pkg/mdsio: added mdsio_gl_slice
3242    
3243    o check parameters & config (chkpt44a_pre,post)
3244    o OBC and NonLin_FrSurf.
3245    
3246    checkpoint44
3247    o fix bug in mom_vi_del2uv
3248    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
3249    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
3250    o update AIM experiments (NCEP input files)
3251    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
3252    o added some stuff for AD
3253    
3254    checkpoint43
3255    o added two new advection tests
3256    o added global 4x4 degree ocean test
3257    o added test of H&S94 with free surface on cube
3258    o some final mods for gradient check, adjoint,...
3259    
3260    checkpoint42
3261      Fixed AD-related problems:
3262    o Store directives up-to-date with re-arranged Adams-Bashforth
3263      (mainly thermodynamics.F)
3264    o New store directives for multi-dim. advection schemes
3265      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
3266      * new common block and key passkey
3267      (mainly gad_advection.F)
3268    o Modified store directives for split of dynamics/thermodynamics
3269      for the case ALLOW_KPP
3270    o Cleaned argument list for timestep_tracer.F
3271    
3272    checkpoint41
3273    o re-formatted/added comments in prologues of key subroutines
3274      to work with protex
3275    
3276    checkpoint40
3277    o moved calc_gs, calc_gt and calc_tr1 back to model/src
3278    o added FLT (floats) package from Arne along with demo. experiment
3279    o re-arranged Adams-Bashforth scheme for tracers to allow easier
3280      implementation of forward-in-time forcing terms
3281    o more mods for non-linear free-surface including new variable
3282    o modified multi-dim method to work on cube
3283    o bug fix in KPP (from DM)
3284    
3285    checkpoint40pre9
3286    o added DST advection schemes
3287    o fix MPI bug on SGI's
3288    o modifications for non-linear free-surface
3289    o fixed conditionals for fixed flow/passive tracer only mode
3290    o added tension/strain form of stress tensor
3291    o changes to commenting of arguments for TAF/TAMC
3292    o added/updated many matlab scripts
3293    o added multi-dimensional advection method for tracers
3294      
3295    checkpoint40pre8
3296    o new package rw/
3297      Added method for dumping intermediate local arrays:
3298      mdsio_writetile - same as mdsio_writefield except works from inside
3299                        bi,bj loop
3300      mdsio_writelocal - same as mdsio_writetile except works for local
3301                         arrays
3302      write_local_r? - higher-level wrapper for mdsio_writelocal
3303      Controlled by diagFreq. Defaults to zero (ie. no dumps)
3304      Example given at end of mom_vecinv.F that dumps some local arrays.
3305    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
3306      control flux-form versus vector invariant code.
3307      Switch is runtime flag vectorInvariantMomentum (defaults to false)
3308      or genmake -DISABLE ...
3309    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
3310      (additional storing is now needed for case vecinv;
3311      currently nothing implemented to switch this storing off
3312      in case fluxform is used since no CPP flag available).
3313    
3314    checkpoint40pre7
3315    o bug fix in dynamics.F
3316      calc_viscosity called before k=1,Nr loop.
3317    o added some #ifdef's ALLOW_PASSIVE_TRACER
3318    o cleaned initialisations in ctrl_map_ini
3319      related to TAF
3320    
3321    checkpoint40pre6
3322    o split dynamics into thermodynamics & dynamics
3323    o corresponding split of calc_diffusivity into
3324      calc_diffusivity, calc_viscosity
3325      (kpp_calc_diff, kpp_calc_visc).
3326    o Added diffkr, kapgm to control variables
3327    o bug fix in gmredi_slope_limit for ldd97
3328    
3329    checkpoint40pre5
3330    o proper initialization of Adams-Bashforth time stepping
3331      + uses forward step for very first step of model (iter=0)
3332    o re-generated *all* output since almost all output is modified by this
3333      change (sorry but we've been putting this one off for about 2 years)
3334      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
3335        *not* regenerated since they are already out of date and I don't
3336        want to create the impression that they are suddenly working.
3337    o removed KAP stuff for DEC's
3338    o modified/added many .cvsignore files in */code and */input
3339    o added new expt "solid-body.cs-32x32x1"
3340      + this uses an alternative form of ini_curvilinear_grid.F which
3341        is not necessarily any better than the current one...
3342    
3343    checkpoint40pre4
3344    o added re-initialisations of utrans,vtrans,rtrans in
3345      calc_common_factors which are crucial for TAF.
3346    o extended iMin,jMin range for calc_common_factors,
3347      calc_diffusivity
3348    o added option ALLOW_PASSIVE_TRACER
3349    o a few minor updates and fixes
3350    
3351    checkpoint40pre3
3352    o created calc_gtr1.F for gad package
3353    o split the_main_loop and re-introduced forward_step
3354    o some recomputations of nIter0 for TAMC
3355    
3356    checkpoint40pre2
3357    o Updated to latest branch of AJA, JMC
3358    o Added gradient check package
3359    o Added routines for passive tracer handling
3360    o Added carbon sequestration sensitivity experiment
3361    
3362    checkpoint39
3363     o Modifications and fixes to support TAMC
3364       (mainly missing or wrong directives)
3365     o Corrected common blocks when fooling TAMC to produce adjoint I/O
3366       in addummy_in_stepping
3367     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
3368     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
3369     o Included following packages:
3370       cal: calendar
3371       exf: external forcing
3372       ecco: essential routines to control use of cal, exf
3373             (NB: this is not the full ECCO environment)
3374     o disabled some packages by default in genmake
3375    
3376    checkpoint38
3377     o see notes_c37_adj.txt
3378     o corrected wrong layer index in external_forcing_t
3379     o replaced the_main_loop/forward_step by the_main_loop
3380     o removed forceoutput from write_state
3381       (replaced criteria for initial/final state)
3382     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
3383    
3384    checkpoint37
3385     o mdsio.F routine split and packaged in pkg/mdsio
3386       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
3387        used unless genmake -disable=mdsio)
3388     o allow a more precise surface-geopotential gradient for the atmosphere
3389       taking into account the change in space of Alpha (=1/rho) at the surface.
3390     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
3391       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
3392     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
3393       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
3394       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
3395     o Time-Average diagnostics defined as a pseudo package "timeave".
3396     o pickup files : old pickup (before c35) did not work with new code (c35
3397       and after) unless activating 2 commented lines in initialise-varia.
3398     o Non-Hydrostatic pickup file Pb fixed.
3399     o bug with Rigid-lid version (since c35) fixed.  
3400    
3401    checkpoint36
3402     o implement Crank-Nickelson barotropic time-stepping
3403     o recover Time-Average diagnostics
3404     o fix Pb in checkpoint (PR#19)
3405     o AIM become a standard package ; clean unused CPP_kees
3406    
3407    checkpoint35
3408     o subtantial rewrite of dynamics.f
3409     o allows staggered time-stepping
3410     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
3411     o added bottom drag (linear + quadratic)
3412    
3413    checkpoint34
3414     o Modified exchange routines for correct reverse simulation.
3415     o Added verification output to comply with bug fix in impldiff.F
3416       as of c33 (exp2, natl_box).
3417     o Corrected store directives in dynamics.F
3418     o Corrected array boundaries in impldiff.F
3419     o Corrected array dimensions in gmredi.
3420       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
3421     o Added routine GLOBAL_SUM_INT to global_sum.F
3422     o Added mdsio_gl.F for ECCO purposes.
3423    
3424    checkpoint33
3425     o Fixed bug in lower BC in impldiff.F
3426     o Fixed confusion about units of forcing arrays in FFIELDS.h
3427       namely Fu,Fv,Qnet,Qsw,EmPmR:
3428       - Removed verification/natl_box/code/external_fields_scale.F
3429         (did not differ from that in model/src)
3430       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
3431         (see FFIELDS.h for description)
3432       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
3433         kpp_calc.F and kpp_transport_t.F
3434       - Removed model/src/external_fields_scale.F and calls to it
3435       - verification/natl_box uses flux data with "atmospheric" sign so
3436         a special version of external_fields_load.F is used to
3437         change the data as it's read in. This way, the arrays
3438         have the right units and signs at all times tha a user could
3439         possibly use them.
3440     o Corrected genmake to delete a temporary file during configuration
3441    
3442    checkpoint32
3443     o Scaling of forcing fields moved from external_forcing.F to
3444       external_fields_scale.F, called directly after loading fields.
3445     o Surface relaxation terms added to surface tendency fields in
3446       extra subroutine.
3447     o impldiff.F changed to avoid storing by TAMC of huge intermediate
3448       fields.
3449     o Changes in GMRedi to comply with packaging structure.
3450     o Modifications and bug fixes in KPP package.
3451     o Verification experiment for KPP added (verification/nat_box/)
3452    
3453    checkpoint31
3454     o Packages interface brought in line with defined standard
3455       -> new routines packages_...F
3456       -> changes in initialise_fixed.F, initialise_varia.F
3457       -> enables initialisation interface for ECCO package
3458     o Rescaling of external forcing fields immediately after read
3459       (removed from external_forcing.F)
3460       -> new: surface_fields_scale.F
3461       -> affects ini_foorcing.F, external_fields_load.F
3462     o Computation of surface tendencies before tendency updates.
3463       -> new: external_forcing_surf.F
3464     o Change of variable names useGMRedi, useKPP, useECCO
3465     o Further changes in dynamics.F, impldiff.F for TAMC
3466     o Tested for experiments 0, 2, 4.
3467       - not yet tested for GMRedi.
3468       - not yet tested for KPP.
3469    
3470    checkpoint30
3471     o Updates for OBCs
3472     o New experiment for test OBCs (internal_wave)
3473     o New output.txt in verification/exp4/results/
3474     o Updates for KPP: calculation of viscosity corrected, new variables
3475       kpp_dumpFreq and kpp_taveFreq
3476     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
3477       and entry for T90 in genmake
3478    
3479    checkpoint29
3480     o packaged KPP and GM/Redi
3481    
3482    checkpoint28
3483     o Corrected initialization of hFacMin for difference vertical coordinates
3484     o Modified calculation of partial cell thickness to more robust algorithm
3485     o config_summary.F: replaced write_1D_... by write_0D_...
3486       read_write.F: added subroutines write_0D_...
3487     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
3488       included some initialisations required for TAMC.
3489     o routine calc_isoslopes: modified sqrt computation to make it
3490       differentiable for zero argument.
3491     o routines dynamics, impldiff:
3492       included store directives and tape key computations required for TAMC.
3493     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
3494    
3495    checkpoint27
3496     o fixed calc_isoslopes() to so that cancellation of terms in tensor
3497       formulation works properly with variable resolution.
3498     o restructured the calling tree between the_model_main() and dynamics()
3499     o split initialise() into initialise_fixed() and initialise_varia()
3500     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
3501       in new routine ini_psurf()
3502    
3503    checkpoint26
3504     o moved some #ifdef in optional routines to encompass everything
3505       except the argument declarations. This was using up some memory.
3506     o fixed macros like _ADT to work with both versions of Linux cpp
3507     o cleaned up some unused and uninitialized variables
3508       (helps when debugging with strict compile options)
3509     o split up CPP_EEOPTIONS.h into options and macros
3510       (macros are now in eesupp/inc/CPP_EEMACROS.h)
3511     o patch for 2 processor JAM mode
3512    
3513    checkpoint25
3514     o updates for OBCs and NH
3515     o dramatically reduced memory usage
3516     o added "JAM" routines for use on Artic network
3517     o parameterization of convection by implicit vertical diffusion
3518     o added a diagnostic of convective index
3519     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
3520       (this is was partly for OBCs and NH but also in anticipation of
3521        an explicit free-surface option)
3522     o initial state input files for U and V
3523    
3524    checkpoint24
3525     o Removed some spurious "REAL"s
3526     o Updated KPP to latest version from JPL
3527     o Added a COS(latitude) in horizontal viscosity
3528    
3529    checkpoint23
3530     o Added del^4 diffusion for salt and temperature
3531     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
3532    
3533    checkpoint22
3534     o Made many small changes: implicit none, format(i5), etc...
3535     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
3536    
3537    checkpoint21
3538     o Introduced new I/O package that supports direct-access records (mdsio.F)
3539     o Split-up mid-level I/O routines
3540     o Updated input data for experiments 0,1,2,4 and 5
3541     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
3542    
3543    checkpoint20
3544     o Tidied up open-boundaries some more
3545     o Added non-hydrostatic code
3546     o Fixed some input data
3547     o Modified MPI start-up to work in "coupled" context.
3548    
3549    checkpoint19
3550     o Tidied up directory structure for verification experiments.
3551     o Added new code for open boundaries.
3552     o Corrected advective terms near boundaries.
3553     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
3554     o Implemented free-slip/no-slip BCs and del^4 dissipation.
3555     o Split default parameters out of ini_parms.F into set_defaults.F.
3556    
3557    checkpoint18
3558     o Further changes for optional code generation with
3559       CPP - ugh!
3560    
3561    checkpoint17
3562     o Beginning to incorporating modularity
3563       for supporting atmos. and ocean configs.
3564     o Small changes for TAMC complinace
3565     o New ultra simple test case. Barotropic box
3566       configuration "exp0".
3567    
3568    checkpoint16
3569     o Minor changes to exchange routines to support
3570       accumulation in reverse mode. Adjoint of an
3571       assignment is an addition.
3572     o Changes to support compilation by TAMC (LR(1)
3573       syntax) and by g77 under Linux ( 72 character
3574       limit ).
3575    
3576    checkpoint15
3577     Rewrote exchange routines to allow
3578     o General tile <-> tile connectivity.
3579     o TAMC reverse mode flag ( is this really needed? )
3580     o Variable width overlap and exchange region widths.
3581     o Hooks for sharing data via DMA, Arctic, Memory Channel,
3582       shmput/shmget, VIA, SYSV shmem and every other cool
3583       communication method.
3584    
3585    checkpoint14
3586     Consistent isomorphism chages made. These allow dynamical core
3587     to support both pressure and meters as a vertical coordinate.
3588    
3589    checkpoint13
3590     Release which corrects global_max problem and a couple
3591     of KGM time-averaging diagnostic errors. Also contains
3592     a double-gyre experiment setup as well as the baseline
3593     4 degree global template. The double gyre template is
3594     organised to allow it to be applied automatically to
3595     the baseline configuration.
3596    
3597    branch-point-rdot
3598     A few tidy-ups have been made bt the real point of this
3599     check-point (excuse the pun) is to allow a branch to be
3600     made for the purposes of adding the rDot alterations.
3601     I don't want to commit the rDot to the main-trunk until
3602     we've actually tested it...
3603    
3604    checkpoint12
3605     Tidy up and added generic genmake script (formerly
3606     configure script).
3607     Released to testers.
3608    
3609    checkpoint11
3610     Re-arranged initialise() and introduced ini_vertical_grid()
3611     and ini_masks_etc().
3612    
3613    checkpoint10
3614     Introduced the configure script.
3615     Separated out the diags package.
3616     Added template for writing time-averages of tile/intermediate quantities.
3617     Updated SIZE.h in exp2 and made the data big-endian.
3618    
3619    checkpoint9
3620     MPI fix. Filename changes (meta/data). salbin*y stuff.
3621     General tidy-up.
3622     SST.bin SSS.bin added to verification/exp2
3623    
3624    checkpoint8
3625     Inludes time-dependant forcing and time-averaging.
3626     Works at 4x4 and 2.8125x2.8125 global
3627    
3628    checkpoint7-4degree-ref
3629     Branch from checkpoint7. Released for application to
3630     global modeling and general modeling - process studies, regional
3631     model etc..
3632     Configured for verification/exp2 - 4 degree global, two process.
3633    
3634  checkpoint7  checkpoint7
3635   Created by cnh   Created by cnh
3636   Simple 4 degree global simulation   Simple 4 degree global simulation

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