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revision 1.47 by heimbach, Tue Aug 21 16:38:41 2001 UTC revision 1.897 by dimitri, Tue Oct 23 08:25:28 2007 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o added open boundary conditions capability for seaice HSNOW and HSALT
8    
9    checkpoint59i
10    o adjoint:
11      * fix multiDimAdvection adjoint
12        (partial recomputation problem by TAF for fVerT(:,:,kDown)
13        and comlev1 size definition (maxpass vs. max. number of tracers)
14      * verification/global_ocean.90x45x15 adjoint now tests
15        NLFS and multiDimAdvection using DST3 (=30)
16      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
17    o pkg/kpp: add "_d 0" to real constant (if missing);
18      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
19      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
20    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
21      for internal parameters related to restart process (formerly from PARAMS.h)
22      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
23    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
24      as argument. (only atm2d & obcs write_pickup have not yet been updated)
25    o pkg/monitor:
26      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
27      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
28      - account for deep Atmosphere factor and density factor (anelastic)
29    o added open boundary conditions capability for seaice HEFF and AREA
30    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
31      thermodynamics
32      - requires a little reorganization, which affects the testreport results
33        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
34        so that now the conservative form is tested
35      - add a few comments
36    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
37    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
38    o add new diagnostics to seaice: advective, diffusive fluxes (only for
39      multidim-advection, for scheme 2 they are not filled) and transports,
40      thermodynamic growth rates
41    o change units of EmPmR (inside the code) from m/s to kg/m2/s (mass flux) but
42      leave input file unchanged. Affects results @ truncation level (cg2d match)
43      and update output of experiments: lab_sea(6), global_ocean.90x40x15(10),
44      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
45      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
46      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
47    
48    checkpoint59h
49    o pkg/exf:
50      - improve vectorization by moving if-statement out of loops in
51        exf_mapfields, exf_radiation
52      - exf_bulkformulae.F: introduce 2D fields and vectorize code
53    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
54    o testreport:
55      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
56        monitor & update offline_exf_seaice exp. output.
57      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
58    o pkg/seaice:
59      - bug fix in the evp solver: boundary conditions were affected be
60        masking of zMax/zMin (changes results)
61      - minor bug fix in boundary conditions in seaice_calc_strainrates
62        (changes results for no_slip)
63      - seaice_lsr.F: make interpolation of eta dependent on boundaries
64      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
65      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
66        stress formulation and no-slip boundary conditions
67    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
68      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
69    o pkg/seaice: a first HSALT time stepping equation has been checked in
70    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
71      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
72      without requiring DO-IF statements
73    o pkg/thsice:
74      use continuous power-law function for partition of energy between lateral
75      melting/freezing and thinning/thickening ; old code using step function
76      still available with #undef THSICE_FRACEN_POWERLAW
77      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
78    o testreport: change AD testing : check against results/output_adm.txt
79      using same scripts as for forward test.
80    
81    checkpoint59g
82    o adjoint testing: in preparation for changing testreport:
83      - output format: cost and grad written on separated lines
84      - ad output results in directory "results" (instead of "results_ad")
85    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
86    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
87    o pkg/ecco: allow user defined cost function contributions
88    o testreport:
89      Allow to choose (per experiment) the list of tested output variables
90       and the main variable (used to issue a pass/FAIL ) ;
91      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
92      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
93      Also modify printing of summary:
94       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
95       b) echo the list of tested variables in the individual summary.txt of
96          each experiment.
97    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
98      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
99      (but still depend on the tile decompostion of the domain).
100    o pkg/seaice: change a discretization detail to make the B-grid code
101      "more symmetric". This change is likely to remove all "ridges/leads" that
102      where quasi-aligned with the grid in B-grid solutions. It may also be
103      the solution to the stress coupling issues with the B-grid.
104    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
105      remove .cvsignore from input dir. (since testreport no longer run here).
106    o pkg/thsice:
107     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
108     - fix reshaping of sea-ice just after advection:
109       melt all the ice only if ice-volume is too small.
110     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
111       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
112     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
113    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
114      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
115    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
116      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
117      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
118      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
119      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
120      -> update output.txt
121    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
122     this affects truncation error: -> update output.txt of exp:
123      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
124      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
125    
126    checkpoint59f
127    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
128    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
129      a bounded range (in forward mode)
130    o pkg/ecco, ctrl, autodiff and mom_common:
131     internal parameter controls, completements of implementations
132    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
133    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
134      (not seem any difference in testing results).
135    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
136       at face corners.
137    o pkg/generic_advdiff:
138     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
139      loop range indices for computing vertical advection tendency
140      and do the calculation in the interior only (no overlap) ;
141      for now, only implemented for SOM advection (to save CPU time).
142     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
143    o exch2 adjoint
144      First set of changes:
145      - add exch2 hand-written adjoint templates
146      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
147        This will require cleanup in pkg/autodiff/*.F
148        (changed routines currently kept separate in verif. code/)
149      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
150        that used to hide exch2 or cubed-sphere specific code
151        (commented via 'cph-exch2')
152    o pkg/seaice
153      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
154    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
155       output of global_ocean.cs32x15.thsice .
156    
157    checkpoint59e
158    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
159      for B-grid vector (not yet tested) and C-grid vector (<- only used
160      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
161    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
162      (#ifdef ALLOW_SALT_PLUME)
163    o gather_2d/scatter_2d: removed halo regions
164    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
165      scheme and the corresponding test case (under front_relax dir). For now,
166      only available with Skew-flux form and not yet tested in realistic set-up.
167      adjoint: store directives updated, but gradient checks deteriorated,
168      so maybe GM/Redi adjoint is now broken.
169    o seaice adjoint
170      * add AREA, HEFF, HSNOW as control variable
171        (should not change lab_sea results)
172      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
173    o pkg/seaice:
174      * added computation of saltFlux in seaice_growth;
175        For time being, sea ice salinity is assumed constant
176        contribution of snow flooding to freshening of sea ice is neglected.
177        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
178        defaults to 0.0 in order to maintain backward compatibility.
179        Typical values for SEAICE_salinity are 4 to 10 g/kg.
180      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
181      * added SEAICE_availHeatFrac, which specifies fraction of surface level
182        heat content used to melt or grow ice
183      * commented out cap of HICE: it helps keep ice thinner
184      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
185      * applied OBCS T/S mask to HEFFM sea ice mask
186    
187    checkpoint59d
188    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
189     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
190     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
191    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
192     and change default value of parameter "GM_Small_Number";
193     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
194       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
195       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
196    o pkg/ecco: cost function when applying pkg/smooth to controls
197    o pkg/ctrl: add forcingPrecond run time parameter
198    o pkg/seaice:
199     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
200     - fix bug in metric terms of u-equation in LSR solver (implicit part),
201       changes verification/lab_sea
202     - rearrange implicit part of u-equation in LSR solver to make it easier to
203       read, understand, and debug. This causes changes at the truncation level.
204     - fix (serious) bug in the boundary conditions (sign error in the implicit
205       part) of the LSR solver. Changes all LSR results.
206     - fixed problem with HSNOW initialization to avoid thick snow when AREA
207       is initilized with small values - does not change lab_sea results.
208     - added HsnowFile initialization capability
209    o pkg/smooth: addition to model/src and pkg/ctrl so allow
210     initialization of pkg/smooth and application to control vector
211    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
212    o dependencies: pkg/profiles requires pkg/cal
213    o pkg/profiles:
214     - added option ALLOW_PROFILES_GENERICGRID
215         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
216         that interpolation information (grid points and coefficients) is provided
217         within the netcdf input files.
218         -> sample matlab scripts can be found in MITgcm_contrib/gael
219         that allow you to prepare netcdf input files.
220     - also modified: cleaner include statements, cleaner error print statements,
221       cleaner stops when error, and more tests of the netcdf input files consistency.
222    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
223    o pkg/seaice:
224     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
225       requires a new routine: seaice_diagnostics_fill.F
226     - make sure that seaice does not move if not forced (pressure replacement
227       method, Hibler and Ip, 1995), changes results
228     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
229     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
230       It is turned off by default (=-1.), because it changes the results.
231     - make it possible to read AREA from a file, too.
232    
233    checkpoint59c
234    o add S/R and diagnostics for oceanic mixed-layer depth
235    o move GMRedi call after all vertical mixing schemes (including KPP)
236    o pkg/thsice:
237     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
238      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
239    o pkg/obcs:
240     - bug fix for balance code
241    o pkg/seaice:
242      - allow values of SEAICE_elasticParm > 1
243      - add new parameter SEAICE_evpTauRelax as an alternative
244        to SEAICE_elasticParm
245      - make lsr boundary conditions free slip (by default), changes result
246      - add code for no slip boundary conditions for lsr
247      - set minimum of zeta to zero (and not 4e8) (changes results)
248      - add a cap on AREA after advecting AREA if seaice_growth is not called
249    o change calculation of Visbeck K:
250      - no longer depend on tapering scheme; instead, compute slope (limited
251        by GM_maxSlope). this is equivalent to what was comuted before with
252        clipping or linear tappering.
253      - fix vertical averaging (wrong by 1/2 level)
254      - leave the old version (but will not be maintained) within
255        #ifdef OLD_VISBECK_CALC / #endif
256      - update output of exp. ideal_2D_oce
257    o change error catch in calc_r_star to improve vectorization
258    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
259      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
260    o adjoint:
261      Re-organized adjoint checkpointing according to Matt Mazloff
262      (but with modifs/completions/cleanups)
263      Storing is now bundled into large arrays to optimized I/O
264      (and second step in cleanup of the_main_loop)
265    
266    checkpoint59b
267    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
268      - export/import (between ocean & coupler) fields needed for ocean DIC.
269    o pkg/seaice:
270      - get rid of three more exchanges seaice_calc_viscosities (required
271        different loop boundaries in seaice_lsr and seaice_ocean_stress)
272      - bug fix in seaice_ocean_stress (update of lab_sea required)
273      - reduce loop boundaries to necessary minimum also in seaice_evp
274      - go back to the old way of computing deltaC/Z as the adjoint likes that
275        better
276    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
277      passive tracer to an Age Tracer) + update output.txt
278    o pkg/exf:
279      - implement A-grid / C-grid selection for wind-stress input files.
280      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
281      for now, in exf_bulk_largeyeager04.F only :
282      - change implementation for case where windspeed + 2. components wind-stress
283        are read-in. AND use rhoConstFresh to convert evap.
284    o pkg/seaice:
285      - use correct EXCH_UV for wind-forcing (on A-grid).
286      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
287        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
288    o pkg/exf:
289      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
290      EXF_INTERPOLATION:
291      - merge global_with_exf/code version of exf_interp_read.F
292        to the main code ;
293      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
294        reading the file ; Important: This options needs to be defined to recover
295        previous code.
296        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
297      - no longer loose real*8 precision along the way when using exf_iprec=64.
298    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
299      - change discretisation of evp-solver in order to avoid another exchange
300        (changes lab_sea) and clean up a little
301      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
302        help the adjoint (this also changes the results slightly)
303      - add a few "_d 0" where they had been missing in seaice_evp.F
304      - cleaning up: remove unused seaice_calc_rhs.F
305    o pkg/exf: some cleaning-up:
306      - change various "constants" into runtime parameters
307      - cleaned-up Large&Yeager04 routine which should eventually
308        replace exf_bulkformulae.F (changed names of S/R and CPP)
309        and merged various ALLOW_ATM_WIND options
310     only used with thsice pkg (in thsice_get_exf.F):
311      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
312        which are used when useStabilityFct_overIce=TRUE (= the default)
313      - change default values of ice & snow emissivity and scale downward LW
314        by ice & snow emissivity.
315    o pkg/thsice:
316     fix few little problems, in thsice_calc_thickn.F:
317      - growth vertically (and not laterally) if iceFrac == iceMaskMax
318      - melt only laterally if hIce < hThinIce (as the comments say)
319      and in thsice_extend.F:
320      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
321      - start to form ice as soon as the minimum ice-volume is reachable.
322     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
323      and cpl_aim+ocn
324    o pkg/kpp
325     - move computation of surface related input fields to KPP into a new
326       subroutine kpp_forcing_surf.F
327     - remove wrong (within bi,bj loops) EXCH calls.
328     - little cleaning (add argument myThid in last position, cvs header ...)
329     - for now, fix conservation problem by exchanging KPPviscAz (may not
330       be the best fix)
331    o pkg/seaice
332     - check for inconsistent evp parameter/cpp-flag combination
333     - remove leftover errIO flat for obsolete name list error handling
334    o OpenAD
335     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
336    
337    checkpoint59a
338    o pkg/seaice: some parameter clarifications and a little bit of clean up
339    o pkg/thsice: rename run-time parameters:
340       himin       -> hIceMin
341       himin0      -> hThinIce
342       hihig       -> hThickIce
343       i0          -> i0swFrac
344       transCoef   -> bMeltCoef
345       frac_energy -> fracMelting
346      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
347       with default values (for now) that do not change the results.
348      remove old version of thsice vars advection in pkg/seaice.
349    o in FFIELDS.h:
350      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
351      - make pLoad & sIceLoad always available (but still only used if
352         ATMOSPHERIC_LOADING is #define).
353    o pkg/kpp: replaced _KPP_RL with _RL
354    o bug fixes for vertical diffusivity computations when both KPP and
355        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
356        are no longer updating the vertical diffusivity array
357        (passed as argument) but are (re-) setting those arrays.
358    o pkg/seaice: fix bug in evp solver, while doing that
359      - change (improve?) discretization of stress computations for both
360        cgrid-lsr and evp solver
361      - add a new routine to compute strain rates
362      - the above changes lab_sea results
363      - add no slip conditions for evp solver (off by default), lsr-version
364        may follow
365      - fix exchange for shear at Z-points (does not change lab_sea)
366      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
367        (to force the user to pick a time step since there is not "safe" way
368        of choosing it)
369      - add principal stress diagnostics
370      - rearrange fields for evp a little to avoid having to call a: too many
371        exchanges and b: exchanges for stress trensor components which we do
372        not have.
373      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
374        of evp, complete rewrite for lsr case (latter is does not yet work
375        in all cases)
376    o pkg/kpp: add code to have mixing in shelf ice caverns
377      - add myThid to all kpp routines (long overdue)
378    
379    checkpoint59
380    o pkg/exf:
381      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
382        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
383      - move exf header files from lower_case.h to UPPER_CASE.h ;
384        add missing cvs Header & Name
385      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
386      - add namelist param. selectStressGridPosition, exf_monFreq
387      - retire many _CLIM routines, and remove data.exf_clim
388        + params moved to data.exf
389        + climsst, climsss now handled by exf_set_gen, i.e.
390          climss?period=0 refers to constant field,
391          climss?period=-12 to monthly forcing
392      - split up namelists in data.exf
393    o pkg/seaice:
394      - remove seaice_exch and seaice_exch_uv
395      - remove superfluous exchange of theta
396      - add myThid to seaice_budget_ocean/ice
397      - add new interface for atmospheric wind forcing (C-grid only)
398        + new routine
399        + two new field (taux, tauy for stress over ice)
400        + removed one global field (DAIRN) for C-grid case only
401    o pkg/thsise
402      - 2nd set of modifs for thsice adjoint in conjunction with exf
403    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
404    
405    checkpoint58y_post
406    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
407      vertical diffusivity, similar to that in MOM4; turned on using
408      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
409      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
410    o Added capability for 3D specification of background vertical diffusion
411      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
412      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
413      "data" file that contains the 3D vertical diffusivity coefficients.
414    o ice dynamics (pkg/seaice) with thsice thermodynamics:
415      - add code within pkg thsice to advect & diffuse sea-ice fields
416      similar to (and will replace) what has been added in  seaice_advdiff.F,
417      but: - conserving Mass, Heat & Salt.
418           - better when using non-linear advection scheme (not yet fully tested)
419           - can also be used in atmospheric set-up (for now, only the diffusion).
420    
421    checkpoint58x_post
422    o IO option for global-file compact format:
423      - add options when generating topology (utils/exch2/matlab-topology-generator)
424      - add I/O capability (pkg/mdsio).
425      - adapt utils/matlab/rdmds.m to read this format.
426      for now long-line format not yet supported by pkg/mdsio (& exch2).
427    o shelfice: add a few diagnostics
428    
429    checkpoint58w_post
430    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
431      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
432      (and replace horiVertRatio in NH code).
433      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
434                         and tutorial_plume_on_slope (sensitive to truncation)
435    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
436      directly to drive seaice model (C-grid only)
437    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
438     - reintroduce computation of wind from stress,
439     - compute tau (in exf_bulkformulae.F) from windstress averaged to
440       mass points to avoid tau = 0
441     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
442    o rdmnc.m: make it work with "global" files created with gluemnc
443    o rdmnc.m : some improvements in dealing with singleton dimension
444      (tested on all testreport mnc output files).
445    o genmake2: disable pkg/profiles if netcdf test fails.
446    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
447    o move call to cal_readparms up to make calendar parameters/variable available
448      to all packages
449    
450    checkpoint58v_post
451    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
452      useDynP_inEos_Zc tested.
453    o pkg/exf: changes to properly interpolate/mask/scale initial fields
454    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
455      and portions thereof.  See read_cs.txt for description and examples.
456    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
457      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
458      following the great-circle arc between those 2 points.
459    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
460      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
461    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
462     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
463     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
464     - still needs work (not working with some options ; efficiency to improve)
465       and serious testing.
466     - use this scheme for temperature & salinity in 2 advection test exp.:
467       advect_xy & advect_xz, respectively.
468    
469    checkpoint58u_post
470    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
471    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
472    o testreport: add option "-skipdir" to skip some test.
473    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
474      momentum calculation.
475    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
476    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
477      remove checkpoint.F and the_correction_step.F (no longer used);
478      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
479    o add option (linFSConserveTr) to correct for tracer source/sink due to
480      Linear Free surface
481    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
482    o pkg/thsice: fix reading mnc-pickups
483    
484    checkpoint58t_post
485    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
486    o pkg/mdsio:
487     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
488       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
489       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
490     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
491     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
492       either MDS_READ_FIELD or MDS_WRITE_FIELD )
493     - new S/R (to replace MDSWRITEMETA), which allows to write more
494       informations (variable names, time ...) to meta files.
495     - modify rdmds.m to give back the meta file content.
496    o pkg/diagnostics: change vertical interpolation to be safer, and more
497       flexible (define p-levels to interpolate to in data.diagnostics);
498      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
499       diagnostic pointer.
500    o pkg/seaice: more cleaning up of seaice_growth, added many comments
501    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
502    o fix multi-category seaice:
503     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
504       SEAICE_MULTICATEGORY
505     - fix short wave heat flux
506    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
507       and allow to use EVP solver. Change forward lab_sea: test both EVP
508       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
509    o Initial check-in of lab_sea adjoint
510      (very similar to natl_box_adjoint/code_seaice)
511      * used C-grid and EVP solver
512      * used KPP, GM/Redi
513      * uses inAdExact=.TRUE.
514      * gradient checks fail for both ADM and TLM
515        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
516        f.d. gradients actually seem more problematic than ADM, TLM gradients;
517        issue is related to forward mismatch between g77 an ifort
518    o pkg/seaice: overhaul of thermodynamics
519     - growth.F and groatb.F are replaced by new routine seaice_growth.F
520     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
521     - move a few global fields out of SEAICE.h into seaice_growth.F and
522       make them 2D (FICE/QNETO/ ...)
523     - remove FO (it is the same as QNETO)
524     - introduce a few local fields to avoid modifying external fields such
525       as atemp, etc.
526    
527    checkpoint58s_post
528    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
529      changed exf_set_gen.F so that
530        genperiod=0 means input file is one time-constant field and
531        genperiod=-12 means input file contains 12 monthly means
532    o CG2D: use pre-computed solver main-diagonal (stored in common block);
533      this affects truncation error ; generate new output file for exp. which
534      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
535        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
536        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
537        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
538        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
539        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
540    o start implementation of deep-atmosphere and anelastic formulation
541    o verification: remove 2nd copy of input files and use script "prepare_run"
542      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
543    o mom_common/vecinv/fluxform: fix a few initialisation isssues
544    o profiles: fix for multithreaded case
545    
546    o diagnostics: rename few diags:
547      s/'PRESSURE'/'RCENTER '/g
548      s/'TICE    '/'oceFreez'/g
549      s/'TAUX    '/'oceTAUX '/g
550      s/'TAUY    '/'oceTAUY '/g
551      s/'SWFLUX  '/'oceQsw  '/g
552      s/DIFx/DFxE/g
553      s/DIFy/DFyE/g
554      and add few ocean-forcing diagnostics:
555      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
556    o modifications to pkg/seaice/growth.F and budget.F, which change results of
557      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
558      as actual snow thickness.  It now refers everywhere to effective snow
559      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
560    
561    checkpoint58r_post
562    o modifications to pkg/seaice/growth.F, which change results of
563      lab_sea experiment: fixes pertain to melting snow over open water, to
564      masking EVAP under sea ice, and to using the correct AREA variable for
565      computations of EVAP, PRECIP, HSNOW, and GHEFF
566    o add ability to read bathy, salt, and theta using MNC (off by def)
567    o add flooding algorithm and advection of HSNOW for pkg/seaice;
568      both are turned off by default and do no change any results
569    o seaice advection with pkg/thsice: a step toward the use of non-linear
570      advection scheme, but #ifdef or commented out for now (requires more EXCH).
571    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
572      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
573      in natl_box (affects results @ truncation level: update output.txt)
574    o multi-threading and IO:
575      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
576      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
577        (needed to work with SingleCpuIO): tested in all verif. exp.
578    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
579      affects the results (but none of the verification test uses this scheme).
580    o Adding some pkg/diagnostics capability to pkg/seaice
581      (will certainly be subject to changes)
582    o ctrl: adding new control variables:
583      lwflux, lwdown, evap, snowprecip, apressure, runoff
584    
585    checkpoint58q_post
586    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
587      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
588      high_res_cube configuration by 4% on Columbia.
589    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
590      add (in global_with_exf/code) a version of EXF_INTERP_READ without
591      dynamical allocation (seems to work in multi-threaded).
592    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
593      single CPU io) so that TAF does not have to see EESUPPORT.h
594    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
595    
596    checkpoint58p_post
597    o obcs: stop if obcs is used with useCDscheme = .true.
598    o shelfice:
599     - fix a sign error so that no slip at shelfice interface works
600     - remove stop for combination non-hydrostatic code and shelfice. That does
601       not mean, that the results are correct, but at least they are numerically
602       stable
603    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
604    o added adjoint exch routined for all exch*3d* routines
605      and updated flow directives
606    
607    checkpoint58o_post
608    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
609      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
610    o change controling S/R for writing pickup file (new S/R do_write_pickup)
611      and clean-up reading/writing of pickup files.
612    o fix local version of read/write pickup (NH part) in rotating_tank/code
613    o simplify EXCH interface:
614     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
615     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
616    o added the regrid package
617    o shelfice:
618     - add a simple boundary layer scheme to reduce noise
619     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
620    
621    checkpoint58n_post
622    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
623       local variable (not in common block).
624    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
625      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
626      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
627        to work with SingleCpuIO.
628    o add "_d 0" to real constant of pkg/cfc subroutines ;
629       update exp. cfc_exemple & tutorial_cfc_offline output files.
630    o multi-threading and IO:
631      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
632        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
633      - barrier before and after reading.
634      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
635      - avoid using MDS_WRITELOCAL for LAND pkg output.
636      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
637        common-block variables ; Allows multi-threading with master-thread IO.
638    o change default MAX_NO_THREADS from 32 to 4 ;
639      and stop cleanly when MAX_NO_THREADS is too small.
640    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
641    
642    checkpoint58m_post
643    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
644       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
645    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
646       keep global_ocean.90x40x15 (for AD testing) with former secondary test
647       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
648    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
649        add MITgcm_tutorials (= code + all the tutorials)
650    o ecco, option to compute cost for total ssh (mean+anom)
651    o consistent with addition of ptracer and ssh in pkg/profiles
652    o profiles: adding ptracer and ssh
653    o testreport: change multi-test output-file name
654      (from output.txt.{name} to output.{name}.txt)
655    o profiles: now ok for mutli-tiles case
656    o seaice: add 4 parameters for different advection schemes for area,
657      (effective) seaice thickness, enthalphy, and snow height. Their default
658      is the standard parameter SEAICEadvScheme
659    o calc_gw:
660     - add cosFacU in zonal viscous flux (harmonic.visc.).
661     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
662       of tutorial_plume_on_slope.
663    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
664    o calc_gw: true flux-form, account for horizontal grid spacing.
665      update rotating_tank results, but not plume_on_slope (affected at
666      truncation level, 11 digits).
667    
668    checkpoint58l_post
669    o calc_gw:
670     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
671     - remove side-drag for now (need to fix it); update plume_on_slope results.
672     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
673    o commit code to make SST/SSS weights spatially variable
674      (based on either variable in-situ or variable initial T/S weights)
675    o pkg/ecco:
676      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
677        now based on horizontally varying weights wthetaLev, wsaltLev
678      * cost_averagesflags now returns year indices in addition to day, month
679      * sflux balance is performed on annual basis
680        (sflxumm, sfluxmm2, bal_sfluxmm)
681      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
682        including separate counting and multipliers
683    o pkg/rbcs
684      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
685    
686    checkpoint58k_post
687    o testreport:
688     - always build in dir. "build" (if not there, mkdir build instead of building
689       & running in input)
690     - run in dir run (if it exists), in build otherwise.
691     - call prepare_run (if input/prepare_run exists)
692     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
693    o pkg/exf modifications to interpolation and rotation routines for more
694       reasonable treatment of North Pole singularity: for tracers North Pole
695       value is set to northernmost zonal-mean value, for zonal velocity it is
696       set to zero, and for meridional velocity it is set to northernmost value.
697    o pkg/exf/exf_check_range.F
698     - add tile index to diagnostics and move stop statement to the very
699       end of the routine.
700    o pkg/diagnostics: (diagnostics_main_init.F)
701      define title of isomorphic variables according to the current config.
702    o pkg/thsice with pkg/seaice dynamics:
703    - fix domain of computation (interior only, required for exf) and do exchanges
704    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
705    o towards a standard way of dealing with multi-threading in MONITOR
706      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
707    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
708       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
709    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
710    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
711    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
712       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
713    o tracer advection:
714     - clean-up and simplify calc_common_factors.F
715     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
716       advection subroutine (but still not used within DST advection S/R)
717    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
718    
719    checkpoint58j_post
720    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
721      from file (collects calls previously in FORWARD_STEP)
722    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
723    o adjoint store dir. adjusted accordingly
724    o genmake2
725      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
726    
727    checkpoint58i_post
728    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
729      on wind stress (SEAICEstressFactor defaults to 1.)
730    o Total number of Timers is finite (<=40): comment out 2 non-essential one
731      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
732    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
733      on CS-grid: no longer loosing mass.
734    o exf & curvilinear-grid: no longer modify longitude xC & xG.
735    o pkg/ggl90: fix sloppy output and fix a bug
736    o pkg/seaice: added SEAICEuseEVPpickup parameter
737      - Set to false in order to start EVP solver with
738        non-EVP pickup files when using SEAICEuseEVP
739      - fix sign error in diffusion in seaice_calc_rhs
740    
741    checkpoint58h_post
742    * Modifications for bottom topography control
743      o replace hFacC by _hFacC at various places
744      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
745      o add non-self-adjoint cg2d_nsa
746      o update autodiff support routines
747      o re-initialise hfac after ctrl_depth_ini
748      o works for 5x5 box, doesnt work for global_ocean.90x40x15
749    * Adding verification for 5x5 box (4-layer) bottom topography control
750    
751    checkpoint58g_post
752    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
753       used for mean seasonal cycle, mean diurnal cycle); add an example
754       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
755    o pkg/ggl90:
756      - add parameter (minimum surface kinetic energy)
757      - fix bug (avoiding division by zero)
758    o couple pkg/thsice to pkg/seaice:
759      - modify advection in seaice to accomodate new scalar fields to be advected
760      - only muliDimAdection scheme work with seaice/thsice
761      - mapping of thsice-variables to seaice-variables, back and forth
762      - does not break the verification experiments, but does not give the
763        desired results either
764    o pkg/seaice
765      - make (default) second order advection a bit less confusing?
766    
767    checkpoint58f_post
768    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
769      to pkg/seaice):
770      - new routines thsice_map_exf and thsice_get_exf provide the interface
771      - add an additional formal parameter to thsice_solve4temp
772    o pkg/exf:
773      - add new fields wspeed, snowprecip (to be able to couple to thsice)
774      - correct Stefan-Boltzmann constant
775      - new parameter for longwave surface emittance
776      - separate some stuff from exf_bulkformulae into new routines  
777        exf_radiation, exf_wind
778      - add new parameters and constants: longwave emissivity for ocean, ice
779        and snow, evaporation parameters over ice
780      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
781        either wind from stress or stress from wind
782    o pkg/thSIce:
783    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
784    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
785       and THSICE_CALC_THICKN
786    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
787    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
788      to make debugging easier.
789    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
790    o pkg/bulk_force:
791      - clean-up comments and parameters ;
792      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
793    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
794      generate new output for test-experiment: aim.5l_cs.thSI
795    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
796      testreport accordingly
797    
798    checkpoint58e_post
799    o SEAICE_CGRID adjoint done
800    o R_STAR adjoint implemented.
801      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
802      * need to sort out init. of h0facc, etc.
803    o Make pkg/profile fully independent of ecco,cost, etc. stuff
804      to be able to use it in pure forward.
805    
806    checkpoint58d_post
807    o upgrade simple test-experiment to tutorial example:
808     step.1: duplicate the experiment and (step.2) will remove the old copy.
809      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
810      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
811      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
812      tutorial_global_oce_biogeo    <- copy of dic_example
813      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
814      tutorial_plume_on_slope       <- copy of plume_on_slope
815      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
816      tutorial_global_oce_optim     <- empty for now (David ?)
817      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
818     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
819    o correct a sign problem in cost_scat.F
820    o obcs and ptracers: fix boundary conditions for advections schemes
821      with larger stencil
822    o thsice adjoint: start
823    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
824      completeness
825    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
826      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
827    o ptracers adjoint:
828      * avoid extensive recomputatations
829      * fix missing re-init. of gptr (missed by TAF)
830    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
831      me to turn off the excessive output to STDOUT that this package produces
832    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
833      and add those terms in Vector-Invariant formulation.
834    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
835      if the control period (xx_hfluxperiod etc) is 0
836    o in profiles pkg, clean routines and fix details
837    o in ecco pkg, reading ssh data:
838      fix problem in case the model does not start at iter0=0
839    o fix mnc-pickup/restart for ptracers
840    o new package prifiles:
841      code to compute profile-based cost by Gael Forget
842      (modifs in ecco, ctrl, autodiff)
843    o Benign bug fix in initialization (spotted by M. Mazloff) of
844      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
845    
846    checkpoint58c_post
847    o adjoint: finish NLFS adjoint and provide reference output in
848      verification/global_ocean.90x40x15/results_ad_nlfs
849    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
850      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
851      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
852      with SEAICE_CGRID defined.
853    o move calendarDumps from "data" to "data.cal" and clean-up the code
854      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
855    o add useEXF & useCAL flags (for now, set in hard-coded way)
856    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
857      (were missing in NH mode, and wrong in quasihydrostatic mode).
858      waiting for Chris updated version of calc_gw to add those CALLs.
859    o fix bug in quasihydrostatic S/R ;
860      add a test for this option: global_ocean.90x40x15.qshyd
861    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
862      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
863    o add on/off flag useOffLine for package OFFLINE
864    o seaice:
865      - modify advection so that it works also on the C-grid
866      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
867        problem in multi-tile runs with C-grid
868      - add flags for clipping ice velocities and/or masking solver forcing
869      - fix drag (ocean on ice) formulation and a bug that caused noise in the
870        C-grid solver
871      - added a few comments to seaice_diffusion.F
872      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
873        are now exclusive)
874      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
875        required re-ordering the code a little:
876       + make DAIRN global variable (defined in SEAICE)
877       + move computation of the viscosities eta and zeta into a new separate
878         routine (because I need to recompute them in seaice_ocean_stress.F)
879    
880    checkpoint58b_post
881    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
882      update output.txt of exp. aim.5l_cs.thSI
883    o various mnc cleanups and improvements:
884      + shrink lookup tables by factor of ~4
885      + better error reporting when running out of lookup space
886      + able to handle longer path/file names (up to 500 chars)
887    o adjoint:
888      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
889      - TBD: "hidden" mom_vecinv recomp. in dynamics
890    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
891     (allow to differentiate between forcing components using new integer flags:
892      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
893     and add new flag to put Dissipation tendency out of Adams-Bashforth.
894    o ecco
895      - enable trend removal from SSH anomaly obs.
896    o adjoint
897      - a fix for PmEpR when #undef EXACT_CONSERV
898      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
899      - try to fix "hidden" recomp. in forward_step for NLFS
900        (NLFS seems broken sometimes after I checked it in)
901    o seaice:
902     - add c-grid version of the dynamic solver:
903       + three new routines that are the c-grid substitute lsr, dynsolver
904         and ostres
905       + put a few fields that were local to dynsolver into global common
906         blocks, so that I can move the computation of stresses etc into
907         seaice_lsr (saves coding but may break the adjoint).
908     - replace more hardwired parameters by runtime parameters
909     - add ice masks that mask the rhs of the implicit solvers where there
910       is no ice (commented out in seaice_dynsolver, because i am not sure
911       if this works properly), eventually this should replace the clipping
912       of ice velocities in seaice_dynsolver to +/-40cm/s.
913    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
914      include it only where its needed
915    o move balancing of fluxes before the call of external_forcing_surf
916    o seaice:
917      - correct units of turning angles (now they are really in degrees)
918      - move computation of GWATX/Y out of main routine into dynsolver
919      - initialize GWATX/Y in seaice_init
920    o Apply mask on Fresh-Water flux (needed for SSH forcing).
921      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
922    o seaice: add runtime flags for turning angles (default to zero)
923    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
924      and trend from exf forcing and ctrl control adjustments
925    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
926      (since checkpoint57x_post)
927    o change the default rotation period to 86164.s = the Earth rotation
928    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
929      and based on a reference stratification. Tested within hs94.cs-32x32x5.
930    o seaice advection: add code for choosing between the default (2nd order
931      central differences) and multiDim advection schemes provided by
932      pkg/generic_advdiff
933    o seaice:
934      - removed all references to SEAICE_GRID.h fields from
935        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
936        (cubed-sphere configuration will change a little)
937      - grid computations in seaice_init are obsolete now.
938      - cleaned up code a little so that is easier to read (hopefully).
939      - added new (better?) discretizations of default advection and diffusion
940        (turn on with SEAICEuseFluxForm)
941      - replace 1 in 3d global fields by kSurface in growth.F
942      
943    checkpoint58a_post
944    o seaice:
945      - bug fix in advect.F
946    o shelfice:
947      - separate shelfice load anomaly from pload (breaks with time
948        dependent forcing), => introduce constant field shelficeLoadAnomaly.
949        Its default is 0., but it may be computed more cleverly from (unknown)
950        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
951        done offline. A good approximation of the pressure load anomaly is
952        necessary to avoid large initial adjustment processes underneath
953        deep-reaching shelfice.
954      - small fix in ISOMIP shelfice_thermodynamics
955      - add more sophisticated thermodynamics of Hellmer (1989), this is
956        now the default
957      - give a few constants more intuitive names
958    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
959      if bulk formulae are used in long integration (especially EmPmR). Turn
960      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
961      if balancePrintMean, the imbalance that is substracted is printed to
962      STDOUT.
963    o fix bug (typo) in obcs_apply_eta.F
964    o add a new package shelfice which enables us to model the circulation
965      underneath shelf-ice with draughts of hundreds of meters.
966     - works
967     - to do: + include improved thermodynamics
968              + check whether kSurfC (from model/inc/SURFACE.h) can be used
969                instead of new field kTopC
970              + can we use topoFile, Ro_surf and existing code in ini_depth.F
971                instead of new field R_shelfIce and new code in ini_depth.F
972                and ini_mask_etc.F?
973              + adjust vertical mixing schemes?
974    o seaice pkg:
975     - add a cpp-flag to include a simple formula for a salinity dependent
976       freezing point of sea water at the surface
977     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
978       meridional stresses are now different (and hopefully correct)
979    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
980       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
981       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
982    o pkg/diagnostics: add options and parameters for regional-statistics
983       diagnostics ; define regions by reading a region-mask from a file
984       (might add other options later)
985    o pkg/bulk_force:
986     - add option and parameters to use AIM surface-flux formulae.
987     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
988       others forcing fields (defined in PARM05, parameter file "data") are loaded
989       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
990     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
991     - use the right EXCH call for uwind,vwind (to work on CS-grid).
992     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
993       and parameters (note: calcWindStress replaces .NOT.readwindstress).
994     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
995    
996    checkpoint58
997    o add "--embed-source" option to genmake2 which, when the supporting
998      tools can be compiled (as determined by genmake2) will turn on the
999      embed_files package which then embeds the entire MITgcm source code
1000      (*.[fFhc] + Makefile) used for the build within the executable
1001      - requested by CNH but off by default
1002      - adds a paltry <9MB to the mitgcmuv executable in most cases
1003      - only writes the output when useEMBEDSRC in eedata is true
1004    o clean up 3-dim. relaxation codes:
1005      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1006      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1007      * Thanks to Tom Haine for testing!
1008    
1009    checkpoint57z_post
1010    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1011      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1012    o fix the pickup behavior for obcs in combination with ptracers
1013    o fix a bug in ptracers_external_fields_load
1014    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1015      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1016    o transfered surface NH pressure to eta field (if exactConserv).
1017    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1018         and update lab_sea output.txt file.
1019    o completing 3-dim. relaxation code: additional term
1020         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1021      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1022      * At compile time, in "EXF_OPTIONS.h" set
1023          #define  ALLOW_CLIMTEMP_RELAXATION
1024          #define  ALLOW_CLIMSALT_RELAXATION
1025      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1026          tauThetaClimRelax3Dim = 15552000.0,
1027          tauSaltClimRelax3Dim  = 15552000.0,
1028      * 3 cases:
1029          1) Use a constant-in-time 3-dim. field
1030          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1031          3) Real-time relax. to time-evolving prescribed field
1032    o Adding Laplacian-type smoothness constraint on
1033      initial and boundary (forcing) controls (ic, bc)
1034      * enable at compile-time via
1035        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1036      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1037      * Absolute scale somewhat unclear so far
1038      * no area weighting was included since no other cost term does so far
1039    
1040    checkpoint57y_post
1041    First step for a NLFS adjoint
1042    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1043    o new init. routines for calc_r_star, calc_surf_dr
1044    o still need to deal with ini_masks_etc
1045    o testreport seemed happy
1046    checkpoint57y_pre
1047    
1048    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1049    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1050    o add new offset feature to offline pkg (plus minor cleanup)
1051    o cfc fixes for final year of integration
1052    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1053      be in GCHEM_OPTIONS).
1054    
1055    checkpoint57x_post
1056    o fix testreport Pb in multiple test experiment.
1057    o cleanup our namelist syntax in verification:
1058      - make it more F95 standards compliant (some work still needed)
1059      - allows the vast majority of our tests to work with gfortran
1060    o Non-Hydrostatic:
1061     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1062     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1063    o Allow to apply AB on T,S rather than on AB(gT,gS):
1064     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1065     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1066       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1067     - need a "clever" read_pickup to restart from the other AB formulation
1068    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1069    o remove some unused variables (reduces number of compiler warnings)
1070    o adjoint
1071      * Disable useVariableViscosity for adjoint for time being
1072        (there are a number of extensive recomputations)
1073      * Initialize certain variables needed for adjoint
1074    
1075    checkpoint57w_post
1076    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1077                 fix the singleCpuIO RS version of MDSWRITEFIELD
1078       and add a WARNING if using globalFiles=T with multi-processors.
1079    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1080      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1081    o tracer advection scheme:
1082      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1083       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1084       was not very convenient).
1085      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1086       (further tests needed for the implicit DST & Flux-Limiter schemes).
1087    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1088      and sRef for convenience, handy, when you want to initialize
1089      ptracers in a large domain with a constant non-zero value. Also,
1090      untangle ptracers_init.F a little.
1091    
1092    checkpoint57v_post
1093    o change dome exp. to use variable viscosity in side-drag terms.
1094    o remove all the files from the cfc_offline test since they are now
1095      incorporated into tutorial_cfc_offline which has been producing
1096      identical results for a few days of testing
1097    o add new parameter: sideDragFactor to enable half-slip-side BC
1098      and change side-drag S/R to use viscosity from mom_calc_visc
1099      (can switch back by setting sideDragFactor=0.); affects results at
1100      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1101       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1102    o vorticity & strain are now computed without masking, to account for
1103      no-slip-side BC in variable viscosity calculation ; mask is applied
1104      anyway later on, before computing advection/coriolis terms.
1105    o modify exp4 to test new obcs support for reading from external files
1106      and for passive tracers
1107    o fix behavior of ptracers_monitor when monitor output is written to a
1108      netcdf-file; still not independent of monitor.F (writes in the same
1109      file).
1110    o change default value of tRef (put a uniform, meaningful value for ocean
1111      & atmos) and initialize sRef (was missing, as Martin mentioned).
1112    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1113      to be proportional to enstrophy dissipation length.  Thus,
1114       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1115      This is now consistent with Smagorinsky and with the manual.
1116    
1117    checkpoint57u_post
1118    o OBCS and PTRACERS: add open boundary support for passive tracers
1119      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1120        OB-values from file; this is not different from the way theta and salinity
1121        are treated
1122      - however, Orlanski-radiation conditions are not supported, and the model
1123        will stop if you use pTracers and Orlanski at the same time.
1124      - beefed up the rountine obcs_external_fields_load: now only those open
1125        boundary values are overwritten with values from files for which there
1126        are really files, otherwise the OB-fields remain untouched. This makes
1127        it possible to use different OBs at different ends of the domain (as
1128        with EXF)
1129    o reduce number of exch calls in shap_filt (s2).
1130    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1131      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1132    
1133    checkpoint57t_post
1134    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1135    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1136      same truncation, independent of the face number: affects affects several
1137      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1138    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1139      note that biharmonic viscosity + no-slip was not tested in any experiment.
1140    o fix bug in non-linear free-surf side-drag ; generate new output for
1141      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1142    o make mnc honor the writeBinaryPrec flag for most kinds of output
1143    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1144    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1145      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1146    o add brackets in multi-terms sum to get same truncation, independent of
1147      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1148      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1149    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1150      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1151      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1152      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1153      Suggested values of viscosity parameters found in mom_calc_visc.
1154      Many new viscosity diagnostics available.
1155    
1156    checkpoint57s_post
1157    o Add clearing-house for viscosity calculations, mom_calc_visc and
1158      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1159      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1160      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1161      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1162      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1163      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1164      ViscAhStrain and viscAhTension are now retired.
1165    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1166    o In response to JMC's bug report, genmake2 now ignores any soft-links
1167      that it finds in the *current* directory when searching for files.
1168      Soft-links found in any other source directories will still work as
1169      they did before.
1170    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1171      a C routine to unlimit the stack size
1172    o mnc-ify pkg/aim snapshot vars
1173    o mnc-ify pkg/land as requested by Daniel
1174    o various changes to mnc including:
1175      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1176      - output can now be grouped so that all files within a group
1177          change the ITER portion of their names in lock-step together
1178      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1179          and works with both EXCH1 and EXCH2 (but needs more testing)
1180      - writing works for all verification test cases w/ g77 on Linux
1181    
1182    checkpoint57r_post
1183    o make MNC variable initialization happen earlier
1184    o add diagnostics for (almost) each term of the momentum Eq.
1185    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1186    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1187    o remove MINIMAL_TAVE_OUTPUT option ;
1188      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1189    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1190      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1191    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1192    o add time-dependent SST, SSS control
1193    o cost terms in ecco/ modularized (new cost_generic.F)
1194    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1195    o new infrastructure for seaice model vs. obs misfits in seaice/
1196      * driver from the_main_loop.F is seaice_cost_driver.F
1197      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1198      * gradient check in Exp. 6a of natl_box_adjoint/
1199    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1200      (see README file)
1201    
1202    checkpoint57q_post
1203    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1204    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1205      - bug was reported by Jean-Michel and Ian Fenty
1206    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1207      update exp. cpl_aim+ocn output.
1208    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1209      Needed for high-res. runs with large global files
1210      to be able to limit tapelev size
1211    o Changed some tests for adjoint:
1212      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1213      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1214      * global_ocean.90x40x15/ back to default 3-level checkpointing
1215    o Modifications to enable scripted COMMON to MODULE conversion
1216      * verification/OpenAD/code/ has necessary scripts and description;
1217      * converts, compiles and runs successfully;
1218    
1219    checkpoint57p_post
1220    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1221    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1222      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1223    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1224    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1225      (was already the case for dissipation with mom_vecinv,
1226       and also the case for grad.PhiHyd when staggered-timeStep)
1227      This will allow to put dissipation out-off the AB time-stepping.
1228     Unfortunately, affects truncation error. Update output of exp. that "fails"
1229      (cg2d matching number) and leave the others for later: front_relax(10),
1230      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1231      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1232    
1233    checkpoint57o_post
1234    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1235      (2) its ready to be documented during the 20050801 DocFest
1236    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1237      for ideal_2D_oce and lab_sea on linux_ia32_g77
1238    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1239      in global1x1_tot/code_seaice_adj to access indices 32, 33
1240      (worth another tag)
1241    
1242    checkpoint57n_post
1243    o adding precip control xx_precip 32
1244    o adding swflux control xx_swflux 33
1245    o Replacing 10 forcing penalty cost routines by 1 generic.
1246    o Implementing partitioning in time-mean and variable adjustment
1247      for atmos. state.
1248    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1249    o in natl_box_adjoint:
1250      * updated exp 1 to 10
1251        (but does not have time-mean vs. variable split results yet)
1252    o updated global1x1/*_seaice_adj/
1253      to incorporate latest changes
1254    o enable useSingleCpuIO for mdsio vector routines
1255      (applies in particular to tapelev I/O)
1256    o removed inefficient K-loop in all active_file*control*.F
1257    
1258    checkpoint57m_post
1259    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1260      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1261    o pkg/exch2: filling of face-corner halo regions is optional
1262      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1263    
1264    checkpoint57l_post
1265     tag before updating tutorials (pre-release-2)
1266    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1267       for output and interpolation of input fields onto model grid)
1268    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1269       Affects results of exp. rotating_tank ; update output.txt.
1270    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1271          and taking the square quantity and/or using a fraction-weight field.
1272    o fix aim_diagnostics_init.F mate numbers.
1273    o add mnc output capability to diagnostics/diagstat and update
1274      our cvsignore files for the ACSII output generated
1275    
1276    checkpoint57k_post
1277    o lab_sea now uses diagnostics package and provides a suite of
1278      new EXF diagnostics output.
1279    
1280    checkpoint57j_post
1281    o exf
1282      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1283        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1284        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1285      * extended diagnostics output
1286        - now includes all EXF variables
1287        - hs, hl moved to common block
1288        - separate S/R for diagnostics, called after ctrl vector is added
1289        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1290        - EXFqnet contains true Qnet (i.e. includes qsw)
1291      * updated verif. lab_sea, global_with_exf
1292      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1293        to ensure that diagnostics sees a true EXFqnet
1294    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1295    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1296      several times with different frequencies.
1297    o mnc-ify the thsice package as requested by Daniel Enderton
1298      - the monitor--MNC output needs work
1299      - many attributes need to be added (most are currently blank)
1300    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1301      - many attributes need to be added (most are currently blank)
1302    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1303    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1304    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1305      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1306         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1307    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1308     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1309    
1310    checkpoint57i_post
1311    o Diagnostics package was changed: diagnostic allocation is now deactivated
1312      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1313    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1314      add 1rst Order upwind vertical Shear.
1315    o add a quick fix for A/B checkpointing in OFFLINE mode
1316    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1317      end-run around the C/Fortran linking horror in eesup/src/timers.F
1318    o added pkg/runclock: allows user to terminate run based on wall clock
1319    o added non-hydrostatic scaling parameter: nh_am2
1320    o pkg/my82: futile attempt to make results compiler-independent by adding
1321      some "_d 0", etc. no effect.
1322    o for mnc output, fill the 'T' coordinate var with myTime and create a
1323      separate 'iter' variable for iteration count
1324    o pkg/diagnostics:
1325      add new capability: output of Global/Regional & per-level statistics ;
1326      tested against monitor output (including land & thSIce) on various exp.
1327    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1328    
1329    checkpoint57h_done
1330      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1331      data.diagnostics, data.gchem, data.ptracers) is done.
1332    
1333    o pkg/diagnostics: prepare for Global/Regional statistics.
1334      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1335    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1336      and rename it: DIFFERENT_MULTIPLE
1337    
1338    checkpoint57h_post
1339    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1340    o pkg/diagnostics: change output frequency, now in seconds (instead
1341      of Nb of iterations). This requires to change data.diagnostics.
1342    checkpoint57h_pre
1343    
1344    o in mnc, let the user create the output dir if both mnc_outdir_date
1345      and mnc_outdir_num are false
1346    o add fflags() to pkg/diagnostics which allows one to specify, on a
1347      per-file basis, the file precision [default behavior is unchanged]
1348    o added diagnostics to pkg/kpp, including computation of mixed layer
1349      depth based on a temperature/density criterion
1350    o updated verification/natl_box to test the new pkg/kpp diagnostics
1351    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1352    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1353    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1354      not mnc -- this mistake was found by JMC and is now corrected
1355    
1356    checkpoint57g_post
1357    o add Adams-Bashforth 3rd Order time stepping:
1358      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1359      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1360    checkpoint57g_pre
1361    
1362    o make lambda[Theta,Salt]ClimRelax spatially varying
1363      (default remains spatially uniform constant based on tau)
1364    o added new control variables
1365      * init. uVel, vVel, etanN
1366      * lambda[Theta,Salt]ClimRelax
1367    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1368      (suggested by G. Forget)
1369    
1370    checkpoint57f_post
1371    o add parameter "baseTime" = model base time = time at iteration zero
1372      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1373      account for baseTime shift
1374    o move Coriolis arrays from PARAMS.h to GRID.h
1375    checkpoint57f_pre
1376    
1377    o mnc-ifying the seaice package
1378    o introduced an alternative length scale calculation for use in the limiting
1379      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1380    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1381    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1382      as well as grad(vort3).  Made it compatible with both approximate form
1383      for the cubed sphere and full form of these gradients.  Added flag
1384      useFullLeith to select between approximate and full form.  
1385    o add "d0" in getcon.F to reduce differences between compilers/platforms
1386      update output.txt of exp. fizhi-gridalt-hs
1387    o change port_rand funtion to allow to set the seed.
1388    o fix obscure MNC bug involving conversion between reals and integers
1389      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1390        new version is now more standards-compliant
1391    o adjoint-related modifications
1392      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1393      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1394      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1395    
1396    checkpoint57e_post
1397    o Adding eddy stress controls a la Ferreira et al.
1398    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1399    
1400    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1401      update output.txt of exp. fizhi-gridalt-hs
1402    o add more "Z" dimensions and associated coordinate vars to MNC
1403    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1404    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1405      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1406      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1407      months and years.  Requires pkg/cal.
1408    o diagnostics: add pickup functionality
1409      - off by default for backwards compatibility
1410      - current version only uses MDSIO -- MNC will be added
1411    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1412    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1413    
1414    checkpoint57d_post
1415    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1416    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1417      output from the diagnostics package
1418    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1419    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1420      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1421    o add coordinate variables to the MNC output from the diagnostics package
1422    o change MNC-flags default value: true when useMNC=TRUE
1423    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1424      the ability (off by default) to read the grid information using MNC
1425    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1426    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1427    o do snap-shot diagnostics at the middle of the time-interval (instead of
1428      at the end).
1429    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1430      new test for AIM with thSIce + slab-ocean
1431    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1432    o move state variable diagnostics to the beginning of the time step ;
1433      (note: still needs some work specially for snap-shot diagnostics)
1434      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1435    
1436    checkpoint57c_post
1437    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1438    o generate new output.txt files on faulks with g77 & the new -ieee option
1439    checkpoint57c_pre
1440    
1441    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1442      update output.txt of exp. global_ocean.90x40x15
1443    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1444      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1445    o add saltFlux(+File) forcing capability with periodicExternalForcing
1446    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1447    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1448    o improvements for the MNC output from DIAGNOSTICS:
1449      - correct handling of the unlimitied dimension
1450      - all dims now have associated coordinate variables
1451      - variables located at U, V, and Corner ("Z") points are now written
1452        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1453        *all* data points are output
1454    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1455    o added pkg/seaice/seaice_monitor.F
1456    o mdsio_readfield.F can now read files visible only to master MPI process.
1457    o pkg/seaice: some test code for ice-modified ocean stress
1458    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1459      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1460      spurious negative numbers for precipitation and humidity.  Will cause
1461      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1462    o pkg/ctrl/
1463      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1464        May be enabled via doPackDiag
1465      *  introduce z-scaling of
1466         + gradient (doZscalePack) and
1467         + control (doZscaleUnpack)
1468    o pkg/mdsio/
1469      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1470      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1471    
1472    checkpoint57b_post
1473    o simplify options in diagnostics_fill arguments (remove weird combinations)
1474    o fix MNC coordinate variables so that they now contain per-face index
1475      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1476      general, EXCH2 grids are only aligned to a "local" coordinate system
1477    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1478    o Implement instantaneous output within pkg diagnostics:
1479      setting a negative frequency in data.diagnostics produces
1480     "snap-shot" output (as opposed to time-average if freq > 0)
1481    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1482      NOTE: change ptracer diagnostics name: use 2 characters to work with
1483            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1484    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1485      becomes the coordinate variable for the 'T' dimension
1486    o add CF-style coordinate variables to MNC
1487      - just a first cut:  numbers are meaningless on the cubesphere and
1488        missing along the T axis but otherwise it works!
1489    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1490    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1491    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1492      this is based directly on what the model compute, so that the content of
1493      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1494    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1495    o clean up build options files for SunOS, in particular
1496      - remove -traditional from xmakedepend
1497      - change -xarch=v9 to -xarch=native for f77
1498      - restore use of make (not gmake)
1499      - add CC=gcc if using g77
1500    o changes per discussion of AM, JMC, & EH3 today:
1501      - move redundant "grid" variables out of "state" -- in preparation of
1502        creating proper CF-style coordinate variables and in recognition
1503        that any/all grid variables can be easily copied (eg. w/NCO) from
1504        the grid files into any of the other NetCDF files
1505      - *always* output grid variables with MDSIO (this will eventually be
1506        changed)
1507      - output MNC grid file if useMNC is true
1508    o every instance of _END_MASTER() has been found and replaced with
1509      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1510      preprocessors
1511    o re-arrange diagnostics pkg initialisation:
1512     - allow each package to extend the available diagnostics list
1513     - add some checking and fix small problems (multi-threaded, ...)
1514     - new S/R diagnostics_fill (replace fill_diagnostics):
1515       look through the short list of active diag. (instead of the long list)
1516       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1517    
1518    checkpoint57a_post
1519    o this set of changes restores TAMC compatibility
1520      tested for global_ocean.90x40x15 adjoint on trough
1521      (what a pain)
1522    
1523    checkpoint57a_pre
1524    o some modifs in tools/build_options for sunos
1525    o call ctrl_pack for ctrl at end for optimcycle=0
1526    
1527    checkpoint57
1528    o add horizontal bi-harmonic viscosity for vertical velocity
1529      - new parameter viscA4W (defaults to viscA4)
1530      - affects only non-hydrostatic code
1531      - to be done: no-slip lateral boundary conditions
1532    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1533    o implement Implicit Vertical advection for pTracers
1534    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1535      (implemented also for implicit vertical diffusion & advection)
1536    o OBCS: extend application of tracer open boundary conditions
1537      to a strip beyond the boundary of width Olx/Oly
1538    o add call monitor to TAF set of required calls (flow directives)
1539      and include in natl_box_adjoint
1540    o untangle a few ifdefs related to cost, ctrl, autodiff
1541      untangel a few ALLOW_ECCO_OPTIMIZATION
1542    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1543      (theta2, salt2 in ecco_cost_weights)
1544    
1545    checkpoint56c_post
1546    o OBCS as control variables
1547      - update ctrl_ad_diff.list, obcs_ad_diff.list
1548      - remove balance of obcs controls from default
1549      - fix index bug nobcs in ctrl_init
1550      - fix dummy fields filen in ctrl_pack
1551      - add dummy weights for obcs
1552    o lsopt: comment out fort.94 output
1553    o optim:
1554      - remove unnecessary header files
1555      - adjusted namelists
1556      - add xerbla.F to Makefile
1557    o exf:
1558      - multiple modifications of exf_check_range
1559      - unit change in exf_init_runoff from [m/year] to [m/s]
1560    o mdsio:
1561      - i/o-vector change debugLevel from debLevA to debLevB
1562    
1563    checkpoint56b_post
1564    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1565      is called from DO_THE_MODEL_IO
1566      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1567      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1568      - clean up PTRACERS_WRITE_TIMEAVE a little
1569    o add another verification experiment that tests both the cfc-pkg and
1570      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1571      reactive tendencies treated inline with regular timestepping
1572    o testreport previously did a lousy job of comparing small numbers, so
1573      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1574      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1575      testreport.
1576    o ptracers_monitor: bug fix for MPI
1577    
1578    checkpoint56a_post
1579    o GCHEM: finish reorganizating the package
1580      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1581        (introduces another 3D-array for each passive tracer, but only if
1582        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1583        gchemTendency is not needed because the timestep is done separately)
1584      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1585      - GCHEM is now---more or less cleanly---separate from PTRACERS
1586      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1587        so clear to me how that should be done in a general way.
1588    o CFC: improve formatting of output in CFC_ATMOS
1589    o PTRACERS:
1590      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1591        that ALL experiments with ptracers enable can be checked. This makes
1592        GCHEM_MONITOR obsolete.
1593      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1594        monitorFreq
1595      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1596    o add PTRACERS (PTR0[1-5]) to testreport output
1597    o exf_check_range:
1598      * default changed to .TRUE.
1599      * will check values for niter0 if debLevA, every timestep if debLevB
1600      * STOP in exf_check_range if 'out of range'
1601      * range chosen generous to allow for potential extema
1602      TBD: a version with stricter range
1603           permitted range would be runtime parameters
1604    o GMredi:
1605      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1606      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1607      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1608    o GCHEM:
1609      - move call to GCHEM_FORCING_SEP, so that it is now called before
1610        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1611      - introduced a useGCHEM runtime flag and applied it everywhere.
1612      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1613        this flag is now only visible within GCHEM-pkg routines.
1614      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1615        be replaced by a 3D array that is computed before thermodynamics; for
1616        this, the tracer ID iTracer had to be included into the parameter list
1617        of ptracers_forcing
1618      - set up forward_step to call gchem_forcing, that will replace
1619        gchem_forcing_int in ptracers_forcing
1620      - cleaning up
1621    o small cleaning of exch2: remove files that are also in eesupp/src
1622    
1623    checkpoint56
1624    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1625    o mnc: cleanup "full" files--fixes out-of-memory problem
1626    o ECCO-GODAE
1627      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1628      * fully merged and updated from SIO code
1629        windstress sign change affects
1630        - exf_inscal_[u/v]stress
1631        - sign of xx_tau[u/v] adjustments
1632        - signs in cost_scat
1633      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1634      * natl_box_adjoint updated and compressed
1635      * 2-level checkpoint switch added
1636        (tested in EXP. 1 of natl_box_adjoint)
1637      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1638    o SVD
1639      * first complete, non-hacked version for SVD calculations
1640      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1641        performed via direct access files admtlm_vector.it????
1642        (via ctrl_[un]pack)
1643      * optimcycle is used for ARPACK iteration counter
1644        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1645      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1646        and add linear transforms where necessary
1647      * controls are initial/final SST, SSS (can be extended; need to check
1648        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1649    o mdsio: filename info to both stderr, stdout
1650    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1651      from sign change
1652    
1653    checkpoint55j_post
1654    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1655      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1656    o add consistent build directories and .cvsignore files to verification
1657    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1658    o make all subroutines 30 or less characters in length for certain older
1659      compilers to work (a thorough search only turns up two routines in
1660      pkg/ptracers)
1661    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1662      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1663    
1664    checkpoint55i_post
1665    o change arrays for total vertical diffusivity (2.D if explicit,
1666      3.D if implicit) ; each ptracer uses its own background value.
1667    o added mnc/NetCDF output capability to ocn_compon_interf
1668      - added bits to verification/cpl_aim+ocn so that it can run on
1669        ITRDA and other clusters without the mpirun "-wd" option
1670    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1671      configuration
1672    o give MNC the ability to create additional files rather than
1673      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1674      - the default is just less than 2GB which is a practical limit
1675        on many systems
1676    o Compute the non-local term using either KPP vertical diffusivity (=default)
1677       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1678    
1679    checkpoint55h_post
1680    o add verification test "vermix"
1681    o remove all the *_ioinc flags and replace with the single global
1682      outputTypesInclusive flag
1683    o allow to set a vertical profile of vertical diffusivity for T & S
1684    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1685    o useMNC moved from data.mnc to data.pkg
1686    
1687    checkpoint55g_post
1688    o Renaming carbon AD experiments to comply with testreport conventions
1689    o Updating adjoint of Held-Suarez hs94.1x64x5
1690    o Fixing directives for non-ECCO forward_step, after ECCO directives
1691      have been fixed to avoid recomp. of do_oceanic_phys
1692      Works well for global_ocean.90x40x15,
1693      but recomp. issue remains for carbon
1694    o Updating adjoint output for natl_box_adjoint after
1695      pkg/ecco has been modified (see taga c55d_post)
1696    
1697    checkpoint55f_post
1698    o rename to timeave_init_fixed
1699    
1700    checkpoint55e_post
1701    o some delicate re-shuffle of store directives to avoid one
1702      extra call of do_oceanic_physics
1703      affects ecco_the_main_loop.F, do_oceanic_physics.F
1704      checkpoint_lev1_directives.h
1705    o NB: this may break global_ocean adjoint temporarily,
1706      but it is clear how to fix it. Will do later, need this now.
1707    
1708    checkpoint55d_post
1709    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1710    o ecco_cost_weights is modified to 1x1 runs
1711    o modifs to allow observations to be read in as
1712      single file or yearly files
1713    o enable to read exf forcing fields as either
1714      single file or yearly files (flag useExfYearlyFields)
1715    checkpoint55d_pre
1716    
1717    o switch between 2-level and 3-level checkpointing
1718    o add ability of MNC to write local and "partial" (eg. 2D slices where
1719      the full 3D field is never actually stored) arrays to NetCDF files
1720      with the correct (that is, the complete multi-dimensional) set of
1721      array indicies
1722      - used in mom_vecinv() to write the diagFreq output
1723      - tested (demonstrated) in verification/aim.5l_cs
1724    o further mnc-ification
1725      - add verification/lab_sea to the list with mnc setups
1726      - fix undefined mnc v-names in cd_code
1727      - add kpp to mnc output (both snapshot and timeave)
1728    o non-hydrostatic code
1729      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1730        in calc_gw.F
1731      - defaults to viscAh
1732      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1733        friction or Leith) in non-hydrostatic mode, as long as there is
1734        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1735    o pkg/cost
1736      extend simple cost functions to treat time mean quantities
1737      (T,U,V) via cost_accumulate_state from cost_tile
1738    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1739        be 2 times larger than the minimum size the advection scheme requires.
1740        now get a perfect conservation of salt in advect_cs test-exp (updated)
1741    o GGL90 (Gaspar's TKE mixed layer)
1742      - add horizontal diffusion of TKE, requires exchanges in
1743        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1744        default. In OPA there is no horizontal diffusion of TKE but the
1745        mixing coefficients are computed from a horizontal average of TKE of
1746        6 points or so. I think that diffusion has a little more physical
1747        justification.
1748      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1749        was in vain)
1750      - mask tke-variable in ggl90_init
1751    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1752    o fix biharmonic diffusion on CS-grid.
1753    o more obcs stuff
1754      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1755        for reading boundary values. This routine is called from
1756        obcs_prescribe_read
1757      - updated obcs_check
1758      - changed sponge layer relaxation parameter units for days to seconds
1759      - turned off sponge layer by default
1760      - changed argument list of OBCS_CALC to myTime+deltaTclock
1761      - fixed about 35 bugs in obcs_external_fields_load
1762    
1763    checkpoint55c_post
1764    o obcs stuff
1765      - new runtime flags useOBCSprescribe, useOBCSbalance
1766      - re-arranged obcs_calc
1767      - moved exf_getobcs to obcs_prescibe_read
1768        obcs_prescibe_read is called after ORLANSKI stuff
1769        and independent of it (executable can contain all).
1770      - updated obcs_check
1771      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1772        These may be necessary only if tangential velocities are
1773        prescribed at OB, not sure, needs testing.
1774    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1775      which simplifies the calls and passes the ifc check-bounds test
1776    
1777    checkpoint55b_post
1778    o add a 2D scalar, Z location, exchange_2 routine.
1779    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1780      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1781      affects advect_cs results (for the wrong reason): update output.txt
1782    o use a more standard discretization for biharmonic viscosity ;
1783     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1784      affects results of dome set-up: update output.txt
1785    o fix gad_advection.F (CubedSphere part), back to version 1.23
1786    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1787    
1788    checkpoint55a_post
1789    o merged code to
1790      * prescribe/read time-dependent open boundaries
1791        (works in conjunction with exf, cal)
1792      * sponge layer code for open boundaries
1793      * each boundary N/S/E/W now has its own CPP option
1794        (healthy for the adjoint)
1795    
1796    checkpoint55
1797    o up-to-date adjoint of previous breaks
1798      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1799      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1800      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1801      - carbon: * remove tr1-related adjoint verification
1802                * add ptracer as control variable
1803    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1804      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1805    
1806    checkpoint54f_post
1807    o in verification/carbin/ remove experiment related to
1808      ALLOW_PASSIVE_TRACER (array tr1 etc)
1809      code_ad/ input_ad/ results_ad
1810    
1811    o add two new packages
1812      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1813        + subject to optimization (memory)
1814      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1815        + subject to reordering (many GOTOs in the original code)
1816        + so far opps is called for every (i,j) point, and then operates in
1817          the vertical; one may want to reorder the scheme in order operate in
1818          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1819          fields)
1820    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1821      - all verification tests compile and run with linux_ia32_g77
1822      - defaults are compatible with current input files--nothing
1823        should change if you were not previously using MNC
1824      - MNC output has been added in numerous places (eg. timeave)
1825        but there are still a few writes not yet do-able with MNC
1826        (this is in progress)
1827      - flags now allow for either/or/both use of MDSIO and MNC and
1828        documentation will soon follow
1829      - numerous small formatting cleanups for ProTeX
1830    o add version info (via BUILD_INFO.h) to MNC and stdout
1831    
1832    checkpoint54e_post
1833    o add two new packages
1834      - pp81 (Packanowski and Philander, 1981), Richardson number and
1835        stratification dependent mixing
1836      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1837      - these scheme operate in a similar manner as KPP (without ghat, of
1838        course), however there is only one diffusivity that is used for both
1839        temperature and salinity (and passive tracers)ç
1840    o add offline package
1841    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1842      provided by Stephanie Dutkiewicz
1843    o genmake2: add ability to search for C compilers and cleanup test output
1844      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1845    
1846    checkpoint54d_post
1847    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1848    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1849      leading to additional shift by 5 days each year of integration
1850       (i.e. leading to considerable offset over the years)
1851    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1852    o start with no AB and no initial filtering (staggerTimeStep):
1853      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1854    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1855      (external loading & cpl import/export stay in forward_step.F)
1856    o update coupling interface to work with new staggerTimeStep
1857    o change MDSIO ptracers_pickup.
1858    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1859    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1860    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1861    
1862    checkpoint54c_post
1863    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1864      this affects (truncation error) output.txt of test-exp:
1865       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1866    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1867    o change Qnet to always be the net heat flux, (+upward).
1868      affects (truncation error) output of natl_box exp.: updated
1869    o define the max number of passive tracers in PTRACERS_SIZE.h
1870    o start to test mnc routinely in exp0
1871    o add sea-ice loading (sIceLoad) as a new forcing field.
1872    
1873    checkpoint54b_post
1874    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1875       impressive on Altix and Opteron systems)
1876    o diagnostics can now write NetCDF files through the mnc package
1877    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1878    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1879    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1880      affects (truncation error) output of lab_sea & natl_box exp.: updated
1881    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1882    
1883    checkpoint54a_post
1884    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1885    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1886    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1887    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1888      + internal_wave (shift in writing cg2d_ini_res)
1889    checkpoint54a_pre
1890    
1891    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1892      - modified verification/lab_sea and natl_box_adjoint accordingly
1893    
1894    checkpoint54
1895    checkpoint53g_post
1896    o prepare splitting of thermodynamics: store convect.counter in common block
1897    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1898      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1899    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1900    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1901    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1902    o restore adjointability
1903    
1904    checkpoint53f_post
1905    o modifications that affect AIM experiment results (update output.txt):
1906      - no advection of S at top interface Nr (pkg/generic_advdiff)
1907      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1908    o AIM pkg:
1909      - include stability function into surf.Flux derivative relative to Tsurf
1910      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1911    
1912    checkpoint53e_post
1913    o merged cylindrical coord configuration
1914    o added rotating_tank experiment
1915    checkpoint53e_pre
1916    
1917    checkpoint53d_post
1918    o faulks upgraded: re-generate output.txt that have changed:
1919       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1920    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1921    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1922    o added Sadourny discretization of Coriolis
1923      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1924      - re-enabled use of omega3 (useAbsVorticity)
1925    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1926      vector-invariant equations
1927      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1928    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1929      hopefully without new bugs
1930      - still to do: biharmonic friction for non-hydrostatic w
1931    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1932    o regenerated output for global_ocean_ebm (using -ieee)
1933    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1934      of mom_common/
1935      - simple re-arrangement of instructions within computing loop
1936    checkpoint53d_pre
1937    
1938    checkpoint53c_post
1939    o new version of coupler for AIM+thSIce and Ocean models
1940     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1941     - land: change Evaporation of snow
1942     - aim with thSIce: fix bug in snow-precip.
1943    o changes to calc_gw.F
1944     - bug fix for w^2 term near the bottom boundary
1945     - (hopefully) improve the lateral slip boundary condtions for use with
1946        partial/looped cells
1947      - because the bug fix changes two verification experiments anyway (exp5
1948        and plume on slope), change the lateral boundary condition from half slip
1949        to the value of no_slip_sides
1950    o ebm package wasnt quite up to the parallel task. Fixed that.
1951    o Adjoint of EBM package + verification
1952      * TLM OK
1953      * ADM not sufficient accuracy yet (needs further testing)
1954    
1955    checkpoint53b_post
1956    o Commiting new energy balance model to repository
1957      * package is pkg/ebm
1958      * verif. is verification/global_ocean_ebm
1959      * references are in ebm_driver.F
1960    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1961    C        Global thermohaline circulation. Part I:
1962    C        Sensitivity to atmospheric moisture transport.
1963    C        J. Climate 12(1), 71-82
1964    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1965    C        Global thermohaline circulation. Part II:
1966    C        Sensitivity with interactive transport.
1967    C        J. Climate 12(1), 83-91
1968    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1969    C        Destabilization of the thermohaline circulation
1970    C        by atmospheric eddy transports.
1971    C        J. Climate 7(12), 1870-1882
1972    o Will need long integration testing.
1973    checkpoint53b_pre
1974    
1975    o created pkg/mom_common in preparation for variable viscosity code
1976    o renamed and split ini_mnc_io
1977    o pkg/land: only liquid water can diffuse or run-off
1978    o AIM using land: soil wetness availability account for snow
1979    o added printMapIncludesZeros to EEPARMS namelist
1980    
1981    checkpoint53a_post
1982    o restore TAMC compatiility for exf_constants.h
1983      (no usage of _d in .h)
1984    o Additional storing in KPP in an attempt to fix
1985      TAMC problem with adjoint of KPP code.
1986      (no success...)
1987      Identical code works fine with TAF.
1988    o Fixed verification/natl_box_adjoint experiments.
1989      Initial conditions for Experiments 4 and 5 are now
1990      set to "SEAICE_initialHEFF=0", which is more reasonable,
1991      and hence gives results closer to that of Experiment 2.
1992      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1993    
1994    checkpoint53
1995    o stable checkpoint with up to date adjoint
1996      TLM tests only run for 1st grdchk at the moment. Its unclear if
1997      this is a code problem or a problem with resetting code for g_
1998      variables that is being autogenerated wrong.
1999      Otherwise:
2000       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2001       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2002         are both still in chaos following their security messes.
2003    
2004    checkpoint52n_post
2005    o various build (mostly genmake2) changes including:
2006      - ability to build/run more easily within Cygwin and MacOS X
2007      - more complicated Makefiles with a stronger dependence on Gnu Make
2008    o pkg/seaice modifications
2009      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2010        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2011        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2012      - changed proxy for geostrophic velocity and updated
2013        verification/lab_sea/results/* accordingly
2014      - removed ADI dynamic solver from pkg/seaice
2015      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2016        they caused a segmentation fault under certain circumstances
2017      - removed unused field WATR
2018    o bug fix in exf-package:
2019      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2020         now reflect that.
2021    o small fixes in the cal-package:
2022      - set reference date to first of January for the 'model'-calendar
2023      - failing of cal_CheckDate in cal_FullDate now actually results in a
2024        warning
2025    o small modifications in exf-package to increase flexibility:
2026      - change climtempfreeze from a constant to a runtime parameter that
2027        is specified in data.exf_clim (default = -1.9)
2028      - introduce runtime parameter windstressmax (default = 2.0) that is
2029        specified in data.exf
2030    o fix in pkg/thsice:
2031      - update Evap (Tsf changes) to be consistent with Latent heat flux
2032      - maintain snow precipitation unchanged (even if Tsf >=0).
2033     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2034    
2035    checkpoint52m_post
2036    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2037      this does not change any of the results, because myIter=0 in swfrac always
2038      lead to jwtype=2 (the default anyway), but the call makes little sense
2039      as a default
2040    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2041    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2042      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2043    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2044    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2045    o extending useSingleCpuIO option to work with new exch2 I/O format
2046      - old-style, missing-tile I/O is still accessible by defining CPP
2047        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2048    o monitor package can write to NetCDF files and/or STDOUT
2049    o fix re-definition bug in MNC_GRID_INIT_ALL()
2050    o doc/api_reference added
2051      - a framework for building an API Reference Manual using all
2052        the "protex" comments embedded in the code
2053      - see pkg/generic_advdiff, pkg/mnc for examples
2054    o MNC:
2055      - make myThid the last argument for all subroutines
2056      - new default for the grid files: NO halos
2057      - add useMNC and other run-time flags
2058      - separate per-file-group handling of the unlimited dimension
2059      - early initialization of MNC w/ flags read at the eeboot stage
2060        and lookup tables set in initialize_fixed
2061      - write all MNC output to a freshly-created directory
2062    o thermodynamics sea-ice (thsice) is now tested with testreport.
2063    o test exp. advect_cs: use the standard cs32 grid ; update output.
2064    o Added functionality to grdchk:
2065      pick global i,j,k position (or nearest wet) where to perform check.
2066    
2067    checkpoint52l_post
2068    o new land formulation:
2069      a) use ground enthalpy as prognostic variable to ensure exact
2070         energy conservation.
2071      b) account for water temperature and for latent heat of freezing
2072         in all processes (rain, run-off, ground storage)
2073      c) compute surface and ground temperature implicitly.
2074    o aim_v23 modification for new land model:
2075      a) Treat separately land / ocean / sea-ice surface fluxes
2076         to allow implicit computation of land & sea-ice surface temp.
2077      b) add snow precipitation.
2078    checkpoint52l_pre
2079    
2080    o fix problem (when 1 tile is empty) in min/max monitor.
2081    o fix bug in timeAve (u,vZetatave in common block)
2082    o no restoring terms under ice for pkg/seaice
2083    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2084    o bug fix for pkg/seaice pickups
2085    o change MNC call locations and add coordinate attributes
2086    o mask vorticity at the corner ; affects global_ocean.cs output
2087    o fix ini_curvilinear_grid ; test CS experiments with mpi
2088    o aim.5l_cs: modify sea-ice fraction input file ; update output
2089    o exf: Adding simple range check routine for exf fields after read
2090    
2091    checkpoint52k_post
2092    o removed top-level directory "diags"
2093      - we migrated these functions to pkg/timeave a long time ago
2094    o fixed bug introduced in pkg/monitor
2095    o accuracy ctrlprec = 32 insuffient for gradient checks using
2096      averaged fields (I/O via cost_averages)
2097      -> use ctrl.h in active_file*.F to control I/O precision.
2098    o paramter list of CALL ADTHE_MAIN_LOOP
2099    o added initial do_the_model_io to ecco
2100    o set all ...Freq to zero after cost_final
2101      taveFreq, dumpFreq, pChkptFreq
2102    o MAIN and ECCO differentiability restored
2103    
2104    checkpoint52j_post
2105    o fix nchklev in tamc.h for global_ocean...
2106    o Bringing flow and store directives up-to-date
2107    o Really weird thing!
2108      call do_the_model_io from the_main_loop with parameters
2109      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2110      TAF places a faulty re-call of initialise_varia
2111      after cost_final call which should not be there!
2112    checkpoint52j_pre
2113    
2114    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2115      error messages
2116    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2117    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2118      debug output
2119    o modfied mdsio_writefield.F to handle non-global files under exch2
2120    o update AIM Cubed-Sphere exp (aim.5l_cs):
2121      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2122    o update AIM Equatorial Channel exp:
2123      use standard aim_v23 pkg and change the SST fields to be more realistic.
2124    o globalFile now works with exch2
2125    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2126      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2127    o limit timeave output for hi-res integrations
2128    
2129    checkpoint52i_post
2130    o removed CPP_EEOPTIONS.h from verification/*/code
2131    o updated the tiling for global_ocean_pressure
2132    checkpoint52i_pre
2133    
2134    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2135      the old pkg/aim).
2136    
2137    checkpoint52h_pre
2138    o shortened offending lines in exch2_send_rx?.template
2139    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2140    o genmake2: add build & execute test for NetCDF code
2141    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2142      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2143    o added useSingleCPUIO flag to monitor.F and mon_out.F
2144    o added temporary hack for sea-ice dynamics on the cube:
2145      metric terms are ignored and it is assumed that
2146      there is no sea-ice on cube faces 1, 2, 4, and 5.
2147    
2148    checkpoint52f_post
2149    o added exch2 cube routines to pkg/exch2
2150    o modified hs94.cs-32x32x5 to use it
2151    o added new grid files to hs94.cs-32x32x5
2152    checkpoint52f_pre
2153    
2154    checkpoint52e_post
2155    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2156      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2157    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2158      to work with implicit vertical advection and AB ;
2159    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2160    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2161     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2162    checkpoint52e_pre
2163    
2164    o fix bug in impldiff when Nr=1 or Nr=2.
2165    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2166    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2167    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2168      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2169    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2170    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2171    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2172    
2173    checkpoint52d_post
2174    o re-tiled many expts to allow comparison in multi-processor mode
2175      - updated output accordingly
2176      - changed hs94.128x64x5 to use intial T from file rather than use the
2177        random number generator
2178    o add infrastructure in model routines for fizhi and gridalt packages
2179    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2180    o changes to permit hi-res, cubed-sphere, configuration
2181      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2182      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2183      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2184        of surface winds for the cube
2185      (A verification experiment, based on global_ocean.cs32x15, but with
2186       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2187       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2188       complete with example surface forcing files and matlab scripts to look
2189       at the output and compare it with that of global_ocean.cs32x15.)
2190    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2191       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2192       to conform to the common rule.
2193    o check-in the first version of the coupler + interfaces for multi-components
2194       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2195       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2196       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2197       - ocean and atmos. share the same horizontal grid (no interpolation).
2198       - exchanges between component and coupler is done in forward_step
2199    o new verification experiment, cpl_aim+ocn:
2200       coupled ocean - AIM atmosphere on cs32 grid.
2201    
2202    checkpoint52d_pre
2203    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2204    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2205    
2206    checkpoint52c_post
2207    o Fixing OPTIONS files for use of exf:
2208      - ALLOW_ECCO not needed
2209      - ECCO_CPPOPTIONS.h should not be included from
2210        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2211        as has been the case in the past
2212      - All cal/exf related options are currently set in
2213        single header file. Should remain so until we
2214        agree on a consistent new policy.
2215    o Removed all CPP options for cal package.
2216      cal has no more CPP options.
2217    o modified STOREs in GAD_ADVECTION
2218    o corrected key comp. for passkey
2219    
2220    checkpoint52b_post
2221    o new version: "thsice" of thermodynamic sea-ice pkg:
2222     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2223     - modify fluxes but do not change theta directly;
2224     - light cleaning of bulk_force pkg (still needed with thsice).
2225     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2226       + output_thsice.txt to test thsice & bulk_force pkgs.
2227    o put back grid & coriolis monitor output.
2228    checkpoint52b_pre
2229    
2230    o call "do_the_model_io" at the beginning (=> dump initial state)
2231    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2232    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2233      (need info on NUMBER_OF_PTRACERS)
2234    o missing PTRACERS headers in some routines
2235    o default tamc.h in pkg/autodiff supposed to crash
2236      to ensure proper customization
2237    
2238    checkpoint52a_post
2239    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2240      - moved surfaceTendencyTice from pkg/seaice to main code
2241      - subroutine FREEZE_SURFACE now limits only surface temperature
2242        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2243        => new output.txt for global_ocean.cs32x15 & global_with_exf
2244      - keep the old version of FREEZE for backward compatibility;
2245        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2246      - corresponding modifs for TAF directives
2247    o added surface flux output variables to TIMEAVE_STATVARS
2248    o time-averaged output for pkg/ptracers
2249    o fix problem with ECCO-related divided adjoint
2250      snapshot file was missing some ad-variables,
2251      but no warning issued by TAF
2252    
2253    checkpoint52a_pre
2254    o some bug fixes for #undef REAL4_IS_SLOW
2255    
2256    checkpoint52 = ecco_c52_e35
2257    o after testing adjoints of checkpoint51u_post
2258    
2259    checkpoint51u_post
2260    o this is the post-merge tag of the ecco-branch
2261      (needs another clean checkout and re-testing)
2262    o various natl_box_adjoint configs and results
2263      but no input fields
2264    o obcs adjoint not yet merged!
2265    o adding ECCO global 1x1 and 2x2 degree configs
2266    o updated/extended some store directives for seaice
2267    o pkg/ecco now containes ecco-specific part of cost function
2268    o top level routines the_main_loop, forward_step
2269      supersede those in model/src/
2270      previous input data.cost now in data.ecco
2271      (new namelist ecco_cost_nml)
2272    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2273    
2274    checkpoint51t_post
2275    o this is the pre-merge tag of the ecco-branch
2276    
2277    checkpoint51s_post
2278    o cleanup: removed various obsolete #define-s
2279    o pkg/grdchk
2280      - renamed 'ph-grd 3' to 'grad-res'
2281      - merged from ecco-branch
2282        (remaining bug fixes for obcs gradient checks)
2283      - additional high-precision output for testreport
2284        (grep for 'precision_grdchk_result')
2285    
2286    checkpoint51r_post
2287    o cleaned up or removed CPP_OPTIONS.h files
2288    o updated results for some of the tests to reflect the new
2289      optfiles (-ieee: -O0 instead of -O3)
2290    
2291    checkpoint51q_post
2292    o cd_code:
2293      - moved cd_scheme.F -> cd_code_scheme.F
2294      - separate read_checkpoint from cd_code_ini_vars.F
2295      - separated cd_code part from write_checkpoint
2296      - updated AD_SOURCE, generated .flow
2297      - added CD_CODE_VARS.h to the_main_loop
2298      - Moving cd_code specific store dir.s to pkg/cd_code
2299    o ctrl package totally restructured
2300      - pack/unpack now optional and decoupled from
2301        xx_/adxx_ I/O
2302      - ctrl_pack/unpack cleaned
2303        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2304      - confined inclusion of AD_CONFIG.h to where necessary.
2305    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2306    
2307    checkpoint51p_post
2308    o create initial cd_code package
2309      - WARNING: the initialization of fields within packages
2310        is broken because INI_FIELDS (where READ_CHECKPOINT is
2311        called) is called *before* PACKAGES_INIT_VARIABLES.
2312        This seems to be backwards since
2313        1) its important to initially zero the entire field including
2314           the "halo" region
2315        2) zeroing needs to be done *before* reading pickup info
2316           and the pickup call might or might not happen in any
2317           particular run
2318      - this needs an overhaul for R2
2319    o cleanup verification/*/code/GMREDI_OPTIONS.h
2320    o cleanup testreport
2321    
2322    checkpoint51o_post
2323    o bringing AD-related verif's up to date with genmake2
2324      - carbon/
2325      - global_ocean.90x40x15/
2326      - hs.94.1x64x5/
2327      - (front_relax/ )
2328    o (more) consistent directory structure for AD-related verif.'s
2329    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2330    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2331    o bug fix in find_alpha.F for MDJWF:
2332      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2333        change rho -> rho-rhoConst
2334      - replace call find_rho to find_rhonum
2335    o initialisation of rFlx extended to full array (required by TAF)
2336      and shifted to thermodynamics
2337    o removed PTRACERS.h in ptracers routine
2338    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2339    o Correcting initialisations for fVerU, fVerV.
2340    o helping TAF to recognize dependency on kUp for
2341      fVerU, fVerV
2342    o Replacing delZ by delR in pkg/ctrl/
2343    checkpoint51o_pre
2344    
2345    o undid all of cp51 pending some cleanups and discussion
2346    o added the [#include "AD_CONFIG.h"] statement to all files that need
2347       it for adjoint/tl #defines
2348     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2349     o removed tools/genmake since it no longer works
2350    
2351    checkpoint51n_post
2352    o modifications to make FREEZE flux visible to pkg/kpp
2353      - moved surfaceTendencyTice from pkg/seaice to main code
2354      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2355      - subroutine FREEZE now limits only surface temperature
2356        (this means new output.txt for global_ocean.90x40x15,
2357         global_ocean.cs32x15, and global_with_exf)
2358    o added surface flux output variables to TIMEAVE_STATVARS
2359    
2360    checkpoint51n_pre
2361    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2362    o added [#include "AD_CONFIG.h"] to all files that use the following
2363      defines:
2364      - ALLOW_ADJOINT_RUN
2365      - ALLOW_TANGENTLINEAR_RUN
2366      - ALLOW_ECCO_OPTIMIZATION
2367    
2368    checkpoint51m_post
2369    o incorporating changes to get TAMC/TAF working in genmake2
2370      - added new TAMC/TAF targets to the Makefile
2371      - various cleanups related to package handling
2372      - these changes should have no impact on the forward model
2373    
2374    checkpoint51l_post
2375    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2376     - faster algorithm for cal_addtime.F
2377     - higher precision arithmetic, where needed
2378     - pkg/exf *startdate variables changed from calendar date to
2379       model integration time
2380    
2381    checkpoint51l_pre
2382    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2383    o enable to apply restoring on S & T only in a latitude band.
2384    o update output (external_forcing_surf modif. change truncation errors)
2385       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2386    
2387    checkpoint51k_post
2388    o change default to: useNHMTerms=.FALSE.
2389     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2390       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2391     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2392        exp1, ideal_2D_oce
2393     - change data file of oceanic exp (leave the results unchanged for now)
2394       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2395    o set gravitySign automatically according to the vertical coordinate used
2396      (and change sign: back to "logical" value: +1 when R increases downward)
2397    o added an include barrier to the default CPP_OPTIONS.h and
2398      removed the #include "PACKAGES_CONFIG.h" from it
2399    o fix a bug in mom_fluxform (from chk51j_post)
2400    
2401    checkpoint51j_post
2402    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2403    o adjusted some flow directives (dynamics, thermodynamics)
2404    o added cubed-sphere case to test cost function
2405    o heckpoint_lev?_directives.h now include
2406      pkg-specific directives, whenever those are enabled.
2407    o Moving pkg-specific flow directives to corresponding pkg
2408      Moving pkg-specific differentiation list to corresponding pkg
2409      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2410      ---> conventions are
2411           - pkg_ad.flow
2412           - pkg_ad_diff.list
2413           - pkg_ad_check_lev?_dir.h
2414    
2415    checkpoint51i_post
2416    o merge of the branch-genmake2
2417      - knowingly breaks the older genmake
2418      - automatic generation of all ALLOW_${PKG_NAME} defines
2419      - new testreport supersedes older testscript
2420    o large number of package inclusion and header cleanups
2421    checkpoint51i_pre
2422    
2423    o new output for adjoin of global ocean vector invariant
2424    o fix for checkpoint of thermodynamic seaice and bulk_force
2425    o Steph gchem various cleanups
2426    
2427    checkpoint 51h_pre
2428    o fixed some single quotes
2429    o modify gchem pkg to be more versatile
2430    o modifications to clean up dic pkg
2431    o add pkg/cfc
2432    
2433    checkpoint51g_post
2434    o provide links for ARPACK and ADM*TLM
2435    o start removing verification/vero/
2436    o update AD-related stuff
2437      (in particular some IF-statements in model/src/ routines)
2438    o adding to verification/global_ocean.90x40x15/ adjoint of
2439      vector invariant setup
2440    
2441    checkpoint51f_post
2442    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2443    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2444      of tracer Green's fucntions for ocean inversion project.
2445    
2446    checkpoint51f_pre
2447    o Added on-the-fly spatial interpolation capability
2448        "USE_EXF_INTERPOLATION" to pkg/exf.
2449      - This is a temporary Cartesian-grid hack until
2450        the super-duper ESMF coupler becomes available.
2451      - See verification/global_with_exf/README for usage example.
2452      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2453        flags and modified pkg/seaice accordingly.
2454    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2455        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2456        non-local transport term.
2457    
2458    checkpoint51e_post
2459    o pkg/mom_vecinv:
2460      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2461      - add time-ave diagnostic of vorticity advection.
2462    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2463    o atmospheric geopotential: - include water vapor effect;
2464                                - use p^kappa in p* scaling.
2465    o land pkg: read initial state from files.
2466    o AIM : add stratospheric drag in the upper level
2467    
2468    checkpoint51d_post
2469    o change function ILNBLNK (=> last non-blank char.) to return zero
2470      (instead of the string length) when the string. char is empty
2471    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2472    o modif's to restore TAMC compatibility
2473      - avoid "_d" constructs in PARAMETER declarations
2474      - avoid interrupting lines by comment lines
2475    o Use cluster local disks for purely local I/O
2476      vs. globally visible disks needed for ctrl stuff
2477      (merged from ecco-branch)
2478      - new active_file_loc... and mdsio_..._loc routines
2479      - affected packages: autodiff, ctrl, grdchk, mdsio
2480    
2481    checkpoint51c_post
2482    o introducing integer flag debugLevel
2483      - debLevZero: suppress all output
2484      - debLevA: standard
2485      - debLevB: equivalent to current debugMode=.TRUE.
2486    o introducing pathname variable mdsioLocalDir for mdsio
2487      that can be specified at runtime
2488      (relevant for cluster I/O to local disk)
2489    `
2490    >>>checkpoint51b_post
2491    adjoint of ptracers
2492    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2493    o extended state in checkpoint_lev?, etc.
2494    o alternative ctrl/cost with tr1 or ptracer
2495    o new comlev1_bibj_ptracers
2496    o new ptracers.flow
2497    o made ptracers_forcing same as external_forcing_s
2498    o added verification for adjoint with ptracers
2499      - adm. grdchk fail so far
2500      - tlm. grdchk OK
2501      - checked tapelev/comlev recomputations: OK
2502    <<<checkpoint51b_pre
2503    
2504    checkpoint51a_post
2505    o added code for biogeochemistry package
2506      - new pkgs: dic, gchem
2507      - new subroutine in ptracers
2508    o modify code for biogeo packages
2509      - in model/src and pkg/ptracers
2510    
2511    checkpoint51
2512    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2513      - autodiff, ctrl, exf, grdchk, seaice
2514      kept separate packages
2515      - cost, ecco, obcs
2516    o updating verification/internal_wave, verification/lab_sea
2517      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2518    
2519    checkpoint50i_post
2520    o Preparing next differentiable checkpoint and sync
2521      of MAIN vs. ecco-branch
2522      - 1st step: this one is differentiable
2523      - 2nd step: next(! not this) checkpoint will have updated packages
2524                  from ecco-branch)
2525    
2526    checkpoint50h_post
2527    o new package "land": provide surface BC for AIM.
2528    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2529    o AIM: use true log-P extrapolation for near surface temp (= as in
2530        F.Molteni paper) ; update aim.5l_cs output.
2531    o New variable in PARM03 for more flexible pickups
2532    o somewhat cleaned package initialisation sequence for
2533      ctrl/ cost/ ecco/ in packages_... routines
2534    
2535    checkpoint50g_post
2536    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2537      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2538      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2539        made the default because of faster convergence than ADI
2540    
2541    checkpoint50f_post
2542    o exf totally restructured
2543      - replaced all exf_set_ routines by one generic exf_set_gen.F
2544        and made sure it's still differentiable
2545      - split exf_getffields.F into new exf_bulkformulae.F
2546      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2547      - updated adjoint/makefile and relevant verif. accordingly
2548    
2549    checkpoint50f_pre
2550     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2551          + change Evap over land. (update aim.5l_cs output)
2552     o added missing .cvsignores and made uniform across expts
2553     o changed configuration of tidal_basin_2d expt
2554     o added pkg/debug functions for tracing code in fatal crashes
2555     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2556     o new fn in pkg/monitor to stop model if solution grows too big
2557     o removed lots of single quotes from comments
2558    
2559    checkpoint50e_post
2560    o make KPP work with PTRACERS
2561     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2562       nearly a copy of kpp_transport_s
2563     - there is no analogue to SurfaceTendencyS, so I have to use
2564       gPtr(of the surface layer) instead
2565    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2566    checkpoint50e_pre
2567    
2568    checkpoint50d_post
2569    o change kpp output from multiple-record state files to single-record state
2570      files analogous to write_state.F
2571    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2572      analogous to the cg2d-related output.
2573    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2574      so that writing to internal file fn (with length 512) fails.
2575    checkpoint50d_pre
2576    
2577    checkpoint50c_post
2578    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2579    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2580    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2581    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2582    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2583    
2584    checkpoint50c_pre
2585    Merging from release1_p13:
2586    o bug fix for pkg/seaice dynamic solver
2587    o Added SEAICE_initialHEFF to pkg/seaice
2588    
2589    checkpoint50b_post
2590    o store u*,v* in gU,V instead of in guNm1,gvNm1
2591    o in order to put the momForcing out of the Adams-Bashforth:
2592      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2593      to timestep.F
2594    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2595    o re-generate output for highly sensitive test-exp:
2596       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2597    
2598    checkpoint50b_pre
2599    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2600    o corrected CPP option mismatch in exf_Bulk... functions for case
2601      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2602    
2603    checkpoint50a_post
2604    o Bug fix for merging between c50 and KPP.
2605      ikey was passed from thermodynamics to kpp_calc via
2606      common block rather than being recomputed in kpp_calc,
2607      in contradiction with new key itdkey.
2608      New key ikppkey created, and tamc.h headers updated.
2609    
2610    checkpoint50
2611    - 2nd step of merge with ecco-branch:
2612      merge changes in ecco-branch back into main trunk
2613    - bug fix in find_alpha
2614    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2615    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2616    - merged some sliced AD support routines
2617    
2618    checkpoint49
2619    merged from ecco-branch:
2620    o exf:
2621      - Enable initialisation of forcing fields to constant
2622        (runtime) values.
2623      - in exf_getffields.F
2624        Reduce i-/j-loop to interior domain, discarding overlaps.
2625        That also fixes wrong TAF-key computations for key_1, key_2
2626        with bulf formulae.
2627      - exf_init.F modify #ifdef for exf_init_evap
2628      - exf_getffieldrec.F, ctrl_getrec.F
2629        The following INT-usages are not safe:
2630          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2631          fldcount = int(fldsecs/fldperiod) + 1
2632        and were modified.
2633    o autodiff: checkpoint_lev...
2634      - updated storing for bulk formulae (some arrays were missing)
2635      - added state for seaice package
2636      - synchronized with main branch
2637    o DIVA:
2638      Modif.s in
2639      - the_main_loop.F
2640      - the_model_main.F
2641      and added cost_final_restore.F cost_final_store.F
2642      o With these changes, it is possible to fully separate
2643        the first forward run to compute the cost function (mdthe_main_loop)
2644        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2645        into separate model executions.
2646        This enables better tuning of DIVA to given queue sizes.
2647      o Loss of cost function value in consecutive DIVA runs is
2648        fixed by storing to 'costfinal' file.
2649      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2650        beginning/end of adjoint integration is accounted for.
2651      The current changes apply to TAF-1.4.26.
2652      TAF has one remaining bug, requiring one manual change
2653      (see MITgcm manual).
2654    o cal: synchronized between MAIN and ecco-branch
2655    
2656    checkpoint48i_post
2657    o Changes to restore differentiability of code w.r.t. previous tag
2658      (mostly adding new routines to make list and replacing
2659      pressure by totPhiHyd).
2660    o Updated and merged grdchk package
2661      - has both ADM and TLM checks
2662      - works for single- and multi-proc.
2663      - output cleaned
2664      - worked successfully for parallel DIVA
2665    o genmake:
2666      - Adding -platform=SP4
2667      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2668    o Modif. for DIVA:
2669      ctrl_unpack should not be called in intermediate DIVA interval.
2670      (similar thing would apply for active files such as
2671      tbar, sbar, psbar, which should not be reinitialised;
2672      only relevant for ecco-branch)
2673    
2674    checkpoint48h_post
2675    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2676    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2677    o Added SEAICE_initialHEFF to pkg/seaice
2678    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2679    
2680    checkpoint48g_post
2681    --- EOS:
2682    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2683      store total Potential in totPhyHyd for diagnostics & EOS.
2684    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2685    --- Pressure/geopotential gradient:
2686    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2687    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2688      ( changes results of global_ocean_pressure )
2689    o NLFS + z-coord.: add eta*Rho' contribution.
2690    o accurate phiHyd when using interface-W at the middle between 2 centers
2691     ( changes results of ideal_2D_oce )
2692    o includes r* 2nd term in potential gradient.
2693    
2694    checkpoint48f_post
2695    Merging from release1_p12:
2696    o Modifications for using pkg/exf with pkg/seaice
2697      - improved description of the various forcing configurations
2698      - added basic radiation bulk formulae to pkg/exf
2699      - units/sign fix for evap computation in exf_getffields.F
2700      - updated verification/global_with_exf/results/output.txt
2701    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2702      (SBO) core products, including oceanic mass, center-of-mass,
2703      angular, and bottom pressure (see pkg/sbo/README.sbo).
2704    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2705      to avoid negative values in shallow regions.
2706      - updated verification/natl_box/results/output.txt
2707      - updated verification/lab_sea/results/output.txt
2708    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2709    o Added useSingleCpuIO option (see PARAMS.h).
2710    o Updated useSingleCpuIO option in mdsio_writefield.F to
2711      work with multi-field files, e.g., for single-file pickup.
2712    o pkg/seaice:
2713      - bug fix in growth.F: QNET for no shortwave case
2714      - added HeffFile for specifying initial sea-ice thickness
2715      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2716    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2717      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2718    o pkg/seaice:
2719      - adjoint-friendly modifications
2720      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2721    
2722    checkpoint48e_post
2723    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2724    o dynamics: change definition of computational domain & adapt mom_fluxform
2725      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2726    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2727        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2728        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2729        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2730        inverted_barometer solid-body.cs-32x32x1
2731      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2732    
2733    checkpoint48d_post
2734    o in preparation for r*:
2735     a) use pre-computed gradient of hydrostatic potential:
2736        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2737     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2738        => affects results of glob_oce_pressure (different truncation error)  
2739      update output.txt of ideal_2D_oce & global_ocean_pressure
2740    
2741    checkpoint48d_pre
2742    o in preparation for r*:
2743      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2744      pass the 2 comp. of the grad. as arguments to momentum S/R.
2745      but for the moment, only used if it does not change the results.
2746    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2747    
2748    checkpoint48c_post
2749    Modifications in treatment of initial flux forcing controls
2750    to avoid extra storing of flux fields.
2751    
2752    checkpoint48c_pre
2753    o Added tidal_basin_2d experiment (currently 1D!)
2754    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2755    
2756    checkpoint48b_post
2757    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2758     (modification to pressure gradient not yet implemented)
2759    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2760      (for U & V) that are used for vertical advection of momentum.
2761    
2762    checkpoint48a_post
2763    o In preparation for r*, use temp. array to compute vertical transport
2764       in flux-form momentum pkg. => change results of few test-exp.
2765      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2766                        lab_sea, natl_box & plume_on_slope
2767    
2768    checkpoint48
2769    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2770    
2771    checkpoint47j_post
2772    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2773    o moved adexch from forward_step to addummy_in_stepping
2774    o added exch in ctrl_map_...
2775    o aveFreq.=0. at end of cost_final to avoid overwrite in
2776      reverse checkpointing loop
2777    o Yet more changes in gmredi:
2778      * adgmredi_calc_tensor
2779        avoiding all recomputation of gmredi_slope_limit
2780      * adgmredi_x/y/rtransport
2781        added flag for excessive storing to avoid recomp. of
2782        u/v/rtans, dTdx/y/z
2783        -> this is not really necessary and very memory-consuming
2784      * adgmredi_slope_psi:
2785        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2786      * gmredi_slope_limit
2787        re-activated full calculation of taperfct for case 'ac02'
2788    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2789    
2790    checkpoint47i_post
2791    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2792    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2793      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2794    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2795    o gmredi: fix few bugs.
2796    
2797    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2798    This will be a good checkpoint to plug into the ecco-branch.
2799    o few modif.'s to get latest version adjointed
2800      (mainly kick out code in ini_linear_phisurf)
2801    o modif's to run adjoint with exactConserv
2802    o case GM_BOLUS_ADVEC should be cleaned
2803      S/R gmredi_slope_psi should be cleaned
2804    o verification/carbon now has exactConserv=.TRUE.
2805    
2806    checkpoint47g_post
2807    o time-average AIM output: becomes independent from statvars time-average
2808      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2809    o After TAF bug fix:
2810      Tested adjoint of gmredi package.
2811      Tests were done with checkpoint47 rather than with latest
2812      checkpoint47f_post since the latter is broken for the adjoint
2813      verification/carbon/ contains both ADM and TLM gradient checks.
2814    Here they are, before they get changed/lost/stolen.
2815    Mostly modif.'s to fix numerical sensitivities.
2816    Gradient checks OK for
2817    - GM_taper_scheme:
2818      * clipping
2819      * ac02
2820      * linear
2821      * glw91
2822      * dm95
2823      * ldd97
2824    - GMREDI_OPTIONS:
2825      * GM_VISBECK_VARIABLE_K
2826      * GM_NON_UNITY_DIAGONAL
2827      * GM_EXTRA_DIAGONAL
2828      * GM_BOLUS_ADVEC
2829    in conjunction with data.gmredi parameters to be checked in
2830    in a few minutes under verification/carbon/code/
2831    
2832    checkpoint47f_post
2833    Merging from release1_p10:
2834    o modifications for using pkg/exf with pkg/seaice
2835      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2836        and SEAICE_EXTERNAL_FLUXES
2837      - pkg/exf CPP options EXF_READ_EVAP and
2838        EXF_NO_BULK_COMPUTATIONS
2839      - usage examples are Experiments 8 and 9 in
2840        verification/lab_sea/README
2841      - verification/lab_sea default experiment now uses
2842        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2843    
2844    checkpoint47e_post
2845    o created a tag prior to creating a branch
2846    
2847    checkpoint47d_post
2848    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2849      at the bottom boundary had an erroneous half slip boundary condition
2850    o added bottom drag and no slip boundary condition capabilities to
2851      oceanic pressure coordinates code
2852    o added new verification experiment global_ocean_pressure, this experiment is
2853      also described in the tutorial section of the manual
2854    checkpoint47d_pre
2855    
2856    checkpoint47c_post
2857    o Added a verification experiment for a global cubed-sphere ocean run
2858      -  verification/global_ocean.cubed32x32x30
2859      -  uses pkg/therm_seaice and pkg/bulk_forcing
2860    
2861    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2862    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2863      when using P-coordinate; only implemented for atmospheric config.
2864    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2865      NOTES: requires option NONLIN_FRSURF to be "#define".
2866    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2867    
2868    checkpoint47b_post
2869    Merging from release1_p9:
2870    o pkg/seaice
2871      - removed GOTO's and added taf directives
2872      - double precision constants to reduce the g77 (Linux)
2873        to F77 (SGI) differences reported in release1_p8
2874    o tools/genmake
2875      - added SGI options
2876    o verification/testscript
2877      - updated to that of checkpoint47a_post
2878    o verification/global_ocean.90x40x15/input/eedata
2879      - modified for SGI f77 compatibility
2880    o verification/lab_sea
2881      - added description of sea-ice model
2882      - added missing matlab routines
2883      - added test of thermodynamics parallelization
2884    
2885    checkpoint47a_post
2886    o new pkg: aim_v23
2887     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2888       for now, keep the same surface forcing as before.
2889     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2890     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2891     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2892    o add diagnostic of surface correction term in monitor output
2893    
2894    o bulk_force and therm_seaice
2895    - Two packages:  bulk_force (Bulk forcing)
2896      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2897    - Earlier integration from Stephaine Dutkiewicz
2898      and Patrick Heimbach.
2899    - Two ifdef statements for compile time,
2900       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2901    
2902    checkpoint47
2903    differentiable version of checkpoint46n_post
2904    o bug fix in quasihydrostaticterms
2905    o * "clean" adjoint code (in terms of extensive recomputations)
2906        can now be obtained for all GMREDI options (i.e. for
2907        - GM_VISBECK_VARIABLE_K
2908        - GM_NON_UNITY_DIAGONAL
2909        - GM_EXTRA_DIAGONAL
2910        - GM_BOLUS_ADVEC )
2911      * However, wrong gradient check problem remains unsolved.
2912      * New CPP options have been introduced for different
2913        tapering schemes
2914    o external_fields_load now part of differentiation list
2915    o pressure needs multiple storing;
2916      would be nice to have store_pressure at beginning or
2917      end of forward_step, e.g. by having phiHyd global (5-dim.)
2918      (NB: pressure is needed for certain cases in find_rho,
2919      which is also invoked through convective_adjustment).
2920    o recomputations in find_rho for cases
2921     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2922    o #define ATMOSPHERIC_LOADING should be differentiable
2923    o ini_forcing shifted to begining of initialise_varia
2924    o Incorporating QNVS line search routines into MITgcm
2925      (this is separate code, and therefore not under pkg)
2926      lsopt/, optim/
2927    o Updated verification/carbon/
2928      - #define GM_VISBECK_VARIABLE_K
2929      - GM_taper_scheme    = 'ldd97'    
2930    
2931    checkpoint46n_post
2932    Merging from release1_p8:
2933    o verification/natl_box:
2934      updating new external_fields_load routine
2935    o New package: pkg/seaice
2936      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2937      The sea-ice code is based on Hibler (1979-1980).
2938      Two sea-ice dynamic solvers, ADI and LSR, are included.
2939      In addition to computing prognostic sea-ice variables and diagnosing
2940      the forcing/external data fields that drive the ocean model,
2941      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2942      The implied surface heat flux is then stored in variable
2943      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2944      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2945      non-local transport term.  Because this call precedes model
2946      thermodynamics, temperature under sea-ice may not be "exactly" at
2947      the freezing point by the time theta is dumped or time-averaged.
2948      N.B.: fairly large differences in accuracy occur across
2949            different platforms/compilers; comparison between
2950            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2951            generated output gives:
2952       T           S           U           V
2953      C D M    c        m  s        m  s        m  s        m  s
2954      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2955      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2956      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2957    
2958      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2959    o GAD:
2960      - generated new common blocks to account for call of
2961        same gad routines with differing traceridentities
2962        (needed to modify tracerIdentity indices in GAD.h)
2963      - generated separate common blocks for case useCubedSphereExchange
2964        (Department of Futurology)
2965      - parameter lists to gmredi_?transport: added tracerIdentity
2966      - added new key indices to tamc.h
2967    o external_fields_load:
2968      - added this routine to TAF list
2969      - needed to make some common blocks global and additional storing
2970        along the same lines as exf package (checkpoint_lev?_directives.h)
2971    o exf:
2972      updated external forcing package
2973      - bug fixes carried over from ecco-branch
2974        (missing OBCS_OPTIONS.h in two routines)
2975      - enable easy to use "no forcing".
2976      - added exf I/O for atmospheric loading
2977      - added exf I/O for runoff data
2978      - transfered scaling between exf <-> MITgcm to exf namelist
2979    o Adding new verification experiment global_with_exf.
2980      This verification experiment is almost identical to the
2981      global_ocean.90x40x15 experiment, except that it uses
2982      the exf (and cal) package instead of the
2983      external_fields_load routine (cf README file).
2984    
2985    checkpoint46m_post
2986    o modified testscript to return -- when there are no lines of "%MON" output
2987    o added new flag "quasiHydrostatic" for QH mode
2988      and new routine quasihydrostaticterms()
2989    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2990      New routine: mom_u_coriolis_nh()
2991    o fixed sign of non-hydrostatic metric terms in u and v equations.
2992      Depend on correct sign of gravitySign.
2993    o added work.pc* to .cvsignore in aim directories using ifc
2994    o introduced flag for controllin non-hydrostatic metric terms
2995    o removed gravitySign from PARM04
2996    o switched to g77/ifc from pgf77 in aim experiments
2997    
2998    checkpoint46l_post
2999    o made convective adjustment work with pressure coordinates:
3000     - changed the direction of k-loop in convective_adjustment.F for the
3001       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
3002     - adjusted the reference pressure k-index in convective_adjustment.F
3003     - adjusted the convection condition in convect.F (in analogy to
3004       calc_ivdc.F)
3005     - convective_adjustment no longer computes anything on the halos
3006     - removed the warnings about negative salinity from find_rho.F and
3007       find_alpha.F; instead the new routine look_for_neg_salinity, called
3008       at the beginning of find_rho, find_alpha, and find_beta, does a
3009       check of the entire slice, if CPP-option
3010       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
3011    checkpoint46l_pre
3012    
3013    checkpoint46k_post
3014    o fixed the verification/global_ocean.90x40x15 experiment:
3015     - new bathymetry (the world according to A., JMC, and M.)
3016     - new initial fields and forcing fields (*.bin files)
3017     - new POLY3.COEFFS (for the next release one should switch to a full
3018       equation of state: JMD95P or MDJWF)
3019     - fixed several errors and redundancies in the data file
3020     - experiment uses looped cells
3021     - added matlab directory with diagnostic scripts for plotting of output
3022    
3023    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
3024     - read AIM physics parameters from a file (data.aimphys)
3025     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
3026    
3027    checkpoint46j_post
3028    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
3029    o move wVel computation at the end of the time step, in S/R integr_continuity
3030    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
3031    o update timeave pkg for wVel diagnostic.
3032    checkpoint46j_pre
3033    
3034    checkpoint46i_post
3035    o Clean up AIM package (and keep the results unchanged):
3036      include CPP_OPTION and use IMPLICT NONE in all routines ;
3037      declare all the variables _RL ; use _d 0 for all numerical constants.
3038      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
3039    
3040    checkpoint46h_post
3041    o cleaned up the use of rhoNil and rhoConst.
3042      - rhoNil should only appear in the LINEAR equation of state, everywhere
3043        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
3044        and the dynamical equations are all divided by rhoConst
3045    o introduced new parameter rhoConstFresh, a reference density of fresh
3046      water, to remove the fresh water flux's dependence on rhoNil. The default
3047      value is 999.8 kg/m^3
3048    o cleanup up external_forcing.F and external_forcing_surf.F
3049      - can now be used by both OCEANIC and OCEANICP
3050    checkpoint46h_pre
3051    
3052     Added code to convert surface volume flux (fresh water) into
3053     a mass flux when using P coordinates in the ocean (OCEANICP).
3054     Note: It assumes you have set rho0=rhoConst=density of fresh water.
3055    
3056    checkpoint46g_post
3057    o Include a new diagnostic variable phiHydLow for the ocean model
3058      - in z-coordinates, it is the bottom pressure anomaly
3059      - in p-coordinates, it is the sea surface elevation
3060      - in both cases, these variable have global drift, reflecting the mass
3061        drift in z-coordinates and the volume drift in p-coordinates
3062      - included time averaging for phiHydLow, be aware of the drift!
3063    o depth-dependent computation of Bo_surf for pressure coordinates
3064      in the ocean (buoyancyRelation='OCEANICP')
3065      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
3066        Theta, Salinity, and Pressure in the parameter list. This routine is
3067        presently contained in find_rho.F. This routine does not give the
3068        correct density for 'POLY3', which would be a z-dependent reference
3069        density.
3070    o cleaned up find_rho
3071      - removed obsolete 'eqn' from the parameter list.
3072    o added two new verification experiments: gop and goz
3073      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
3074    checkpoint46g_pre
3075    
3076    checkpoint46f_post
3077    o Enable tangent linear (forward mode) gradient checks:
3078      - extended active file handling to g_... files
3079      - added TANGENT_SIMULATION to theSimulationMode
3080      - extended grdchk package accordingly
3081    o added tangent linear setup in verification/carbon/code_ftl
3082    o added adjoint setup in verification/front_relax/code_ad
3083    
3084    checkpoint46e_post
3085    o Added new equation of state -> MDJWF
3086      - EOS of McDougall et al., 2002, JAOT, submitted
3087      - caveat: the equation of state is only valid for a smaller (more
3088        realistic?) range of values than JMD95P/Z and UNESCO
3089      - added masks to the calculation of pressure in store_pressure
3090      - added more check values for density in check_eos (ini_eos.F), some of
3091        the old check values are out of the range of the MDJWF-eos, so don't
3092        expect perfect matches for those
3093    checkpoint46e_pre
3094    
3095    checkpoint46d_post
3096    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
3097      'OCEANICP', also initialised field pressure correctly in ini_eos in the
3098      case of pressure coordinates. eosType='JMD95Z' in
3099      combination with buoyancyRelation='OCEANICP' now causes an error.
3100    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3101      in find_alpha/beta.
3102    checkpoint46d_pre
3103    
3104    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3105      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
3106    
3107    checkpoint46c_post
3108    o Changes necessary for ocean in p-coordinates
3109     -  Added new buoyancy relation = 'OCEANICP'
3110     -  Added new parameters = gravitySign (this used to be contained inside
3111        the factor dRdZ which I added when we first switched to R coordinates).
3112     X GM/Redi is not compatible (yet)
3113     X bottom drag and no-slip need to be debugged.
3114    checkpoint46c_pre
3115    
3116    checkpoint46b_post
3117    o Added new equation of state -> JMD95Z and JMD95P
3118      - EOS of Jackett and McDougall, 1995, JAOT
3119      - moved all EOS parameters into EOS.h
3120      - new routines ini_eos.F, store_pressure.F
3121    o Added UNESCO EOS, but not recommended because it requires
3122      in-situ temperature (see JMD95)
3123    o Modified formatting for knudsen2.f in utils/knudsen2 and added
3124      unesco.f to be used with POLY3
3125    checkpoint46b_pre
3126    
3127    checkpoint46a_post
3128    o Added (atmospheric) pressure loading
3129      - new field in FFIELDS.h, etc...
3130      - new cpp flag ATMOSPHERIC_LOADING
3131    o Changed hFacC to _hFacC in calc_phi_hyd.F
3132    o Added SHORTWAVE_HEATING to some files for consistency
3133    checkpoint46a_pre
3134    
3135    checkpoint46
3136    further merges from release1_p5
3137    o new ctrl package
3138      - adopted from ECCO environment to enable optimization
3139      - added Eliassen Palm fluxes to controls
3140    o added Eliassen Palm flux controls to gradient check package
3141    o cost package
3142      - Compatible with new ctrl package
3143      - added Eliassen Palm cost hooks
3144      - modif's of existing cost functions
3145    o Adjoint-related bug fixes in kpp:
3146      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
3147      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
3148    o autodiff package
3149      - flow directives:
3150        + new for S/R do_the_model_io
3151        + enhanced for S/R checkpoint
3152        + new gmredi.flow
3153      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
3154        disable adcommon.h/g_common.h by default.
3155      - fixed problem for adjoint of global_max
3156    o modified verification/carbon/
3157    o New setup for adjoint of global_ocean
3158    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
3159    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
3160    o incorporated hooks for sponge layer code (external_forcing.F)
3161    
3162    checkpoint45d_post
3163    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
3164    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
3165      (affects plume_on_slope "cg2d" output)
3166    o add new parameter deltaTfreesurf for free-surface time stepping
3167    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
3168    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
3169    o change phiMin in exp1 (to agree with documentation)
3170    o add new flags:
3171     - T,S forcing inside/outside Adams-Bashforth
3172     - turn off temp,salt advection and/or forcing
3173     - for each tracer, define internal flag for multiDimAdvection & A-B
3174    o monitor: change definition of KE to check conservation of Energy
3175    
3176    checkpoint45c_post
3177    o Removed f90 comments ("!")
3178    o Modified initialisations to enable exf package for MITgcm
3179      (without invoking ECCO_PACKAGE).
3180    o modifications to gradient check package (Martin Losch)
3181      - enable centered differences
3182      - modified format of standard output
3183    
3184    checkpoint45b_post
3185    o cleaned exchange calls in cg2d
3186    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
3187    o included CPP option SINGLE_LAYER_MODE in thermodynamics
3188      to configure barotropic setup (Martin Losch)
3189    o moved some initialisations within bi,bj loop in dynamics
3190      (TAF flow dependency)
3191    o in initialise_varia, moved call packages_init_variables
3192      before convective_adjustment_init
3193      (corresponding adjustment of TAF tape initialisation).
3194    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
3195    
3196    checkpoint45a_post
3197    o compute Rho over the whole domain (extend iMin,jMin indices)
3198    o specific exchange for X-slice domain (case Ny=1)
3199    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
3200    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
3201    
3202    checkpoint44h_post = checkpoint45
3203    o Fix to restore differentiability:
3204      place at which packages_init_variables is called in
3205      initialise_varia is crucial for reverse control flow.
3206    o modifications in GMRedi to enable stable adjoint
3207      (corresponding modif's in thermodynamics, dynamics)
3208    o added missing hook for sponge layer code in external_forcing
3209    o modified test cost functions
3210    o storing in gad_advection (plus removal of write(0,*)!
3211    o missing headers TR1.h added in convective_adjustment routines
3212    o errorMessageUnit set non-equal zero in eeboot
3213      (conflict on some platforms, e.g. IBM SP3)
3214    o modified carbon verif.
3215    
3216    checkpoint44h_pre
3217    o vertical grid option: allow to put the Interface at the middle between
3218      2 cell-centers ; replace delZ in pkg/kpp by drF.
3219    o GM Advective form: Tracers are advected using the residual transport (=
3220      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
3221    
3222    checkpoint44g_post
3223    o fix surface correction term in multiDimAdvection (affects plume_on_slope
3224      results) ; ifdef missing in thermodynamics.F
3225    
3226    checkpoint44f_pre,checkpoint44f_post
3227    o added PTRACERS package
3228      This allows an arbitrary number of passive tracers to be integrated
3229      forward simultaneously with the dynamicaly model.
3230      + Implemented so far:
3231        - basic forward algorithm (time-stepping, advection, diffusion, convection)
3232        - I/O and checkpointing
3233        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
3234      + Not implemented so far:
3235        - KPP
3236        - OBCS
3237      + No specific example supplied (yet) but global_ocean.90x40x15 has the
3238        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
3239        line in data.pkg.
3240      + This package is disabled by default since it increases storage.
3241    
3242    
3243    o testscript: added -cleanup option
3244    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
3245                 b) enable to filter 2D fields.
3246    
3247    checkpoint44e_pre,post
3248    o re-wrote convective adjustment to use pre-calculated weights
3249      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
3250      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
3251      Original calls to convect() still in place.
3252    
3253    chkpt44d_pre,post
3254    o added missing EXCLUDE_MONITOR flags
3255    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
3256      (incompatible typ in MIN/MAX expressions caused problems
3257      on IBM SP3)
3258    o in genmake added variable MAKEDEPEND
3259      plus resetting for case SunOS
3260    o added timer_stats.c routine for IBM SP3
3261    o removed variables in dynamics
3262    !!! I forgot to create tag chkpt44d_pre !!!
3263    !!! But chkpt44d_pre = chkpt44c_post    !!!
3264    
3265    o real fresh water flux implemented with non-linear free-surface.
3266    
3267    chkpt44c_pre,post
3268    o few fix (mask in shap_s2, EmPmR in external_field_load,
3269      USE_NATURAL_BCS in solve_for_P);
3270    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
3271    
3272    checkpoint44b_pre/_post
3273    o merge of relevant stuff from the ecco-branch:
3274      - genmake: removed $S64 overwrite for case SunOS
3275      - pkg/exf: update and corrections for field swapping and obcs
3276      - pkg/ecco: parameter lists for the_model_main, the_main_loop
3277                  harmonized between ECCO and MITgcm
3278      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
3279                      updated checkpointing_lev... lists for obcs
3280      - model/src: minor changes in forward_step, plot_field
3281                   added directive for divided adjoint in the_main_loop
3282      - pkg/mdsio: added mdsio_gl_slice
3283    
3284    o check parameters & config (chkpt44a_pre,post)
3285    o OBC and NonLin_FrSurf.
3286    
3287    checkpoint44
3288    o fix bug in mom_vi_del2uv
3289    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
3290    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
3291    o update AIM experiments (NCEP input files)
3292    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
3293    o added some stuff for AD
3294    
3295    checkpoint43
3296    o added two new advection tests
3297    o added global 4x4 degree ocean test
3298    o added test of H&S94 with free surface on cube
3299    o some final mods for gradient check, adjoint,...
3300    
3301    checkpoint42
3302      Fixed AD-related problems:
3303    o Store directives up-to-date with re-arranged Adams-Bashforth
3304      (mainly thermodynamics.F)
3305    o New store directives for multi-dim. advection schemes
3306      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
3307      * new common block and key passkey
3308      (mainly gad_advection.F)
3309    o Modified store directives for split of dynamics/thermodynamics
3310      for the case ALLOW_KPP
3311    o Cleaned argument list for timestep_tracer.F
3312    
3313    checkpoint41
3314    o re-formatted/added comments in prologues of key subroutines
3315      to work with protex
3316    
3317  checkpoint40  checkpoint40
3318  o all changes of checkpoint40pre?  o moved calc_gs, calc_gt and calc_tr1 back to model/src
3319    o added FLT (floats) package from Arne along with demo. experiment
3320    o re-arranged Adams-Bashforth scheme for tracers to allow easier
3321      implementation of forward-in-time forcing terms
3322    o more mods for non-linear free-surface including new variable
3323    o modified multi-dim method to work on cube
3324    o bug fix in KPP (from DM)
3325    
3326    checkpoint40pre9
3327    o added DST advection schemes
3328    o fix MPI bug on SGI's
3329    o modifications for non-linear free-surface
3330    o fixed conditionals for fixed flow/passive tracer only mode
3331    o added tension/strain form of stress tensor
3332    o changes to commenting of arguments for TAF/TAMC
3333    o added/updated many matlab scripts
3334    o added multi-dimensional advection method for tracers
3335      
3336    checkpoint40pre8
3337  o new package rw/  o new package rw/
3338    Added method for dumping intermediate local arrays:    Added method for dumping intermediate local arrays:
3339    mdsio_writetile - same as mdsio_writefield except works from inside    mdsio_writetile - same as mdsio_writefield except works from inside

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