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revision 1.16 by cnh, Tue Nov 3 15:31:08 1998 UTC revision 1.899 by dimitri, Fri Oct 26 02:00:47 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 new read/write pickup version:
8      - for now, only implemented for main (mdsio) pickup file.
9      - write out only what is needed to restart; merge pickup_nh , pickup_ph
10        and main pickup together.
11      - read meta file; read only what is needed to restart; stop if a field
12        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
13        if it make sense (even if the restart is not perfect).
14      - if no meta file, assume that pickup to read corresponds exactly to
15        a pickup that would currently be written.
16      - read pickup written in the old format (until checkpoint59i) if it
17        recognizes an old meta file (no field-list).
18      - add a meta file in exp. which starts from a pickup: 2 cases:
19        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
20         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
21        b) a meta file describing the content of the associated pickup file
22         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
23    o pkg/mdsio & pkg/rw:
24      - new routine to read a meta file ; new set of routine to read
25        Multiple-fields file (with meta file).
26    o added open boundary conditions capability for seaice
27        HSNOW, HSALT, UICE, and VICE
28    
29    checkpoint59i
30    o adjoint:
31      * fix multiDimAdvection adjoint
32        (partial recomputation problem by TAF for fVerT(:,:,kDown)
33        and comlev1 size definition (maxpass vs. max. number of tracers)
34      * verification/global_ocean.90x45x15 adjoint now tests
35        NLFS and multiDimAdvection using DST3 (=30)
36      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
37    o pkg/kpp: add "_d 0" to real constant (if missing);
38      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
39      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
40    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
41      for internal parameters related to restart process (formerly from PARAMS.h)
42      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
43    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
44      as argument. (only atm2d & obcs write_pickup have not yet been updated)
45    o pkg/monitor:
46      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
47      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
48      - account for deep Atmosphere factor and density factor (anelastic)
49    o added open boundary conditions capability for seaice HEFF and AREA
50    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
51      thermodynamics
52      - requires a little reorganization, which affects the testreport results
53        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
54        so that now the conservative form is tested
55      - add a few comments
56    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
57    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
58    o add new diagnostics to seaice: advective, diffusive fluxes (only for
59      multidim-advection, for scheme 2 they are not filled) and transports,
60      thermodynamic growth rates
61    o change units of EmPmR (inside the code) from m/s to kg/m2/s (mass flux) but
62      leave input file unchanged. Affects results @ truncation level (cg2d match)
63      and update output of experiments: lab_sea(6), global_ocean.90x40x15(10),
64      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
65      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
66      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
67    
68    checkpoint59h
69    o pkg/exf:
70      - improve vectorization by moving if-statement out of loops in
71        exf_mapfields, exf_radiation
72      - exf_bulkformulae.F: introduce 2D fields and vectorize code
73    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
74    o testreport:
75      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
76        monitor & update offline_exf_seaice exp. output.
77      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
78    o pkg/seaice:
79      - bug fix in the evp solver: boundary conditions were affected be
80        masking of zMax/zMin (changes results)
81      - minor bug fix in boundary conditions in seaice_calc_strainrates
82        (changes results for no_slip)
83      - seaice_lsr.F: make interpolation of eta dependent on boundaries
84      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
85      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
86        stress formulation and no-slip boundary conditions
87    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
88      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
89    o pkg/seaice: a first HSALT time stepping equation has been checked in
90    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
91      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
92      without requiring DO-IF statements
93    o pkg/thsice:
94      use continuous power-law function for partition of energy between lateral
95      melting/freezing and thinning/thickening ; old code using step function
96      still available with #undef THSICE_FRACEN_POWERLAW
97      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
98    o testreport: change AD testing : check against results/output_adm.txt
99      using same scripts as for forward test.
100    
101    checkpoint59g
102    o adjoint testing: in preparation for changing testreport:
103      - output format: cost and grad written on separated lines
104      - ad output results in directory "results" (instead of "results_ad")
105    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
106    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
107    o pkg/ecco: allow user defined cost function contributions
108    o testreport:
109      Allow to choose (per experiment) the list of tested output variables
110       and the main variable (used to issue a pass/FAIL ) ;
111      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
112      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
113      Also modify printing of summary:
114       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
115       b) echo the list of tested variables in the individual summary.txt of
116          each experiment.
117    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
118      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
119      (but still depend on the tile decompostion of the domain).
120    o pkg/seaice: change a discretization detail to make the B-grid code
121      "more symmetric". This change is likely to remove all "ridges/leads" that
122      where quasi-aligned with the grid in B-grid solutions. It may also be
123      the solution to the stress coupling issues with the B-grid.
124    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
125      remove .cvsignore from input dir. (since testreport no longer run here).
126    o pkg/thsice:
127     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
128     - fix reshaping of sea-ice just after advection:
129       melt all the ice only if ice-volume is too small.
130     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
131       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
132     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
133    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
134      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
135    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
136      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
137      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
138      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
139      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
140      -> update output.txt
141    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
142     this affects truncation error: -> update output.txt of exp:
143      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
144      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
145    
146    checkpoint59f
147    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
148    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
149      a bounded range (in forward mode)
150    o pkg/ecco, ctrl, autodiff and mom_common:
151     internal parameter controls, completements of implementations
152    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
153    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
154      (not seem any difference in testing results).
155    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
156       at face corners.
157    o pkg/generic_advdiff:
158     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
159      loop range indices for computing vertical advection tendency
160      and do the calculation in the interior only (no overlap) ;
161      for now, only implemented for SOM advection (to save CPU time).
162     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
163    o exch2 adjoint
164      First set of changes:
165      - add exch2 hand-written adjoint templates
166      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
167        This will require cleanup in pkg/autodiff/*.F
168        (changed routines currently kept separate in verif. code/)
169      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
170        that used to hide exch2 or cubed-sphere specific code
171        (commented via 'cph-exch2')
172    o pkg/seaice
173      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
174    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
175       output of global_ocean.cs32x15.thsice .
176    
177    checkpoint59e
178    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
179      for B-grid vector (not yet tested) and C-grid vector (<- only used
180      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
181    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
182      (#ifdef ALLOW_SALT_PLUME)
183    o gather_2d/scatter_2d: removed halo regions
184    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
185      scheme and the corresponding test case (under front_relax dir). For now,
186      only available with Skew-flux form and not yet tested in realistic set-up.
187      adjoint: store directives updated, but gradient checks deteriorated,
188      so maybe GM/Redi adjoint is now broken.
189    o seaice adjoint
190      * add AREA, HEFF, HSNOW as control variable
191        (should not change lab_sea results)
192      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
193    o pkg/seaice:
194      * added computation of saltFlux in seaice_growth;
195        For time being, sea ice salinity is assumed constant
196        contribution of snow flooding to freshening of sea ice is neglected.
197        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
198        defaults to 0.0 in order to maintain backward compatibility.
199        Typical values for SEAICE_salinity are 4 to 10 g/kg.
200      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
201      * added SEAICE_availHeatFrac, which specifies fraction of surface level
202        heat content used to melt or grow ice
203      * commented out cap of HICE: it helps keep ice thinner
204      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
205      * applied OBCS T/S mask to HEFFM sea ice mask
206    
207    checkpoint59d
208    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
209     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
210     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
211    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
212     and change default value of parameter "GM_Small_Number";
213     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
214       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
215       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
216    o pkg/ecco: cost function when applying pkg/smooth to controls
217    o pkg/ctrl: add forcingPrecond run time parameter
218    o pkg/seaice:
219     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
220     - fix bug in metric terms of u-equation in LSR solver (implicit part),
221       changes verification/lab_sea
222     - rearrange implicit part of u-equation in LSR solver to make it easier to
223       read, understand, and debug. This causes changes at the truncation level.
224     - fix (serious) bug in the boundary conditions (sign error in the implicit
225       part) of the LSR solver. Changes all LSR results.
226     - fixed problem with HSNOW initialization to avoid thick snow when AREA
227       is initilized with small values - does not change lab_sea results.
228     - added HsnowFile initialization capability
229    o pkg/smooth: addition to model/src and pkg/ctrl so allow
230     initialization of pkg/smooth and application to control vector
231    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
232    o dependencies: pkg/profiles requires pkg/cal
233    o pkg/profiles:
234     - added option ALLOW_PROFILES_GENERICGRID
235         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
236         that interpolation information (grid points and coefficients) is provided
237         within the netcdf input files.
238         -> sample matlab scripts can be found in MITgcm_contrib/gael
239         that allow you to prepare netcdf input files.
240     - also modified: cleaner include statements, cleaner error print statements,
241       cleaner stops when error, and more tests of the netcdf input files consistency.
242    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
243    o pkg/seaice:
244     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
245       requires a new routine: seaice_diagnostics_fill.F
246     - make sure that seaice does not move if not forced (pressure replacement
247       method, Hibler and Ip, 1995), changes results
248     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
249     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
250       It is turned off by default (=-1.), because it changes the results.
251     - make it possible to read AREA from a file, too.
252    
253    checkpoint59c
254    o add S/R and diagnostics for oceanic mixed-layer depth
255    o move GMRedi call after all vertical mixing schemes (including KPP)
256    o pkg/thsice:
257     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
258      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
259    o pkg/obcs:
260     - bug fix for balance code
261    o pkg/seaice:
262      - allow values of SEAICE_elasticParm > 1
263      - add new parameter SEAICE_evpTauRelax as an alternative
264        to SEAICE_elasticParm
265      - make lsr boundary conditions free slip (by default), changes result
266      - add code for no slip boundary conditions for lsr
267      - set minimum of zeta to zero (and not 4e8) (changes results)
268      - add a cap on AREA after advecting AREA if seaice_growth is not called
269    o change calculation of Visbeck K:
270      - no longer depend on tapering scheme; instead, compute slope (limited
271        by GM_maxSlope). this is equivalent to what was comuted before with
272        clipping or linear tappering.
273      - fix vertical averaging (wrong by 1/2 level)
274      - leave the old version (but will not be maintained) within
275        #ifdef OLD_VISBECK_CALC / #endif
276      - update output of exp. ideal_2D_oce
277    o change error catch in calc_r_star to improve vectorization
278    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
279      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
280    o adjoint:
281      Re-organized adjoint checkpointing according to Matt Mazloff
282      (but with modifs/completions/cleanups)
283      Storing is now bundled into large arrays to optimized I/O
284      (and second step in cleanup of the_main_loop)
285    
286    checkpoint59b
287    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
288      - export/import (between ocean & coupler) fields needed for ocean DIC.
289    o pkg/seaice:
290      - get rid of three more exchanges seaice_calc_viscosities (required
291        different loop boundaries in seaice_lsr and seaice_ocean_stress)
292      - bug fix in seaice_ocean_stress (update of lab_sea required)
293      - reduce loop boundaries to necessary minimum also in seaice_evp
294      - go back to the old way of computing deltaC/Z as the adjoint likes that
295        better
296    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
297      passive tracer to an Age Tracer) + update output.txt
298    o pkg/exf:
299      - implement A-grid / C-grid selection for wind-stress input files.
300      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
301      for now, in exf_bulk_largeyeager04.F only :
302      - change implementation for case where windspeed + 2. components wind-stress
303        are read-in. AND use rhoConstFresh to convert evap.
304    o pkg/seaice:
305      - use correct EXCH_UV for wind-forcing (on A-grid).
306      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
307        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
308    o pkg/exf:
309      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
310      EXF_INTERPOLATION:
311      - merge global_with_exf/code version of exf_interp_read.F
312        to the main code ;
313      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
314        reading the file ; Important: This options needs to be defined to recover
315        previous code.
316        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
317      - no longer loose real*8 precision along the way when using exf_iprec=64.
318    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
319      - change discretisation of evp-solver in order to avoid another exchange
320        (changes lab_sea) and clean up a little
321      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
322        help the adjoint (this also changes the results slightly)
323      - add a few "_d 0" where they had been missing in seaice_evp.F
324      - cleaning up: remove unused seaice_calc_rhs.F
325    o pkg/exf: some cleaning-up:
326      - change various "constants" into runtime parameters
327      - cleaned-up Large&Yeager04 routine which should eventually
328        replace exf_bulkformulae.F (changed names of S/R and CPP)
329        and merged various ALLOW_ATM_WIND options
330     only used with thsice pkg (in thsice_get_exf.F):
331      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
332        which are used when useStabilityFct_overIce=TRUE (= the default)
333      - change default values of ice & snow emissivity and scale downward LW
334        by ice & snow emissivity.
335    o pkg/thsice:
336     fix few little problems, in thsice_calc_thickn.F:
337      - growth vertically (and not laterally) if iceFrac == iceMaskMax
338      - melt only laterally if hIce < hThinIce (as the comments say)
339      and in thsice_extend.F:
340      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
341      - start to form ice as soon as the minimum ice-volume is reachable.
342     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
343      and cpl_aim+ocn
344    o pkg/kpp
345     - move computation of surface related input fields to KPP into a new
346       subroutine kpp_forcing_surf.F
347     - remove wrong (within bi,bj loops) EXCH calls.
348     - little cleaning (add argument myThid in last position, cvs header ...)
349     - for now, fix conservation problem by exchanging KPPviscAz (may not
350       be the best fix)
351    o pkg/seaice
352     - check for inconsistent evp parameter/cpp-flag combination
353     - remove leftover errIO flat for obsolete name list error handling
354    o OpenAD
355     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
356    
357    checkpoint59a
358    o pkg/seaice: some parameter clarifications and a little bit of clean up
359    o pkg/thsice: rename run-time parameters:
360       himin       -> hIceMin
361       himin0      -> hThinIce
362       hihig       -> hThickIce
363       i0          -> i0swFrac
364       transCoef   -> bMeltCoef
365       frac_energy -> fracMelting
366      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
367       with default values (for now) that do not change the results.
368      remove old version of thsice vars advection in pkg/seaice.
369    o in FFIELDS.h:
370      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
371      - make pLoad & sIceLoad always available (but still only used if
372         ATMOSPHERIC_LOADING is #define).
373    o pkg/kpp: replaced _KPP_RL with _RL
374    o bug fixes for vertical diffusivity computations when both KPP and
375        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
376        are no longer updating the vertical diffusivity array
377        (passed as argument) but are (re-) setting those arrays.
378    o pkg/seaice: fix bug in evp solver, while doing that
379      - change (improve?) discretization of stress computations for both
380        cgrid-lsr and evp solver
381      - add a new routine to compute strain rates
382      - the above changes lab_sea results
383      - add no slip conditions for evp solver (off by default), lsr-version
384        may follow
385      - fix exchange for shear at Z-points (does not change lab_sea)
386      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
387        (to force the user to pick a time step since there is not "safe" way
388        of choosing it)
389      - add principal stress diagnostics
390      - rearrange fields for evp a little to avoid having to call a: too many
391        exchanges and b: exchanges for stress trensor components which we do
392        not have.
393      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
394        of evp, complete rewrite for lsr case (latter is does not yet work
395        in all cases)
396    o pkg/kpp: add code to have mixing in shelf ice caverns
397      - add myThid to all kpp routines (long overdue)
398    
399    checkpoint59
400    o pkg/exf:
401      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
402        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
403      - move exf header files from lower_case.h to UPPER_CASE.h ;
404        add missing cvs Header & Name
405      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
406      - add namelist param. selectStressGridPosition, exf_monFreq
407      - retire many _CLIM routines, and remove data.exf_clim
408        + params moved to data.exf
409        + climsst, climsss now handled by exf_set_gen, i.e.
410          climss?period=0 refers to constant field,
411          climss?period=-12 to monthly forcing
412      - split up namelists in data.exf
413    o pkg/seaice:
414      - remove seaice_exch and seaice_exch_uv
415      - remove superfluous exchange of theta
416      - add myThid to seaice_budget_ocean/ice
417      - add new interface for atmospheric wind forcing (C-grid only)
418        + new routine
419        + two new field (taux, tauy for stress over ice)
420        + removed one global field (DAIRN) for C-grid case only
421    o pkg/thsise
422      - 2nd set of modifs for thsice adjoint in conjunction with exf
423    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
424    
425    checkpoint58y_post
426    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
427      vertical diffusivity, similar to that in MOM4; turned on using
428      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
429      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
430    o Added capability for 3D specification of background vertical diffusion
431      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
432      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
433      "data" file that contains the 3D vertical diffusivity coefficients.
434    o ice dynamics (pkg/seaice) with thsice thermodynamics:
435      - add code within pkg thsice to advect & diffuse sea-ice fields
436      similar to (and will replace) what has been added in  seaice_advdiff.F,
437      but: - conserving Mass, Heat & Salt.
438           - better when using non-linear advection scheme (not yet fully tested)
439           - can also be used in atmospheric set-up (for now, only the diffusion).
440    
441    checkpoint58x_post
442    o IO option for global-file compact format:
443      - add options when generating topology (utils/exch2/matlab-topology-generator)
444      - add I/O capability (pkg/mdsio).
445      - adapt utils/matlab/rdmds.m to read this format.
446      for now long-line format not yet supported by pkg/mdsio (& exch2).
447    o shelfice: add a few diagnostics
448    
449    checkpoint58w_post
450    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
451      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
452      (and replace horiVertRatio in NH code).
453      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
454                         and tutorial_plume_on_slope (sensitive to truncation)
455    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
456      directly to drive seaice model (C-grid only)
457    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
458     - reintroduce computation of wind from stress,
459     - compute tau (in exf_bulkformulae.F) from windstress averaged to
460       mass points to avoid tau = 0
461     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
462    o rdmnc.m: make it work with "global" files created with gluemnc
463    o rdmnc.m : some improvements in dealing with singleton dimension
464      (tested on all testreport mnc output files).
465    o genmake2: disable pkg/profiles if netcdf test fails.
466    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
467    o move call to cal_readparms up to make calendar parameters/variable available
468      to all packages
469    
470    checkpoint58v_post
471    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
472      useDynP_inEos_Zc tested.
473    o pkg/exf: changes to properly interpolate/mask/scale initial fields
474    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
475      and portions thereof.  See read_cs.txt for description and examples.
476    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
477      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
478      following the great-circle arc between those 2 points.
479    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
480      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
481    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
482     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
483     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
484     - still needs work (not working with some options ; efficiency to improve)
485       and serious testing.
486     - use this scheme for temperature & salinity in 2 advection test exp.:
487       advect_xy & advect_xz, respectively.
488    
489    checkpoint58u_post
490    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
491    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
492    o testreport: add option "-skipdir" to skip some test.
493    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
494      momentum calculation.
495    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
496    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
497      remove checkpoint.F and the_correction_step.F (no longer used);
498      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
499    o add option (linFSConserveTr) to correct for tracer source/sink due to
500      Linear Free surface
501    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
502    o pkg/thsice: fix reading mnc-pickups
503    
504    checkpoint58t_post
505    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
506    o pkg/mdsio:
507     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
508       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
509       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
510     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
511     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
512       either MDS_READ_FIELD or MDS_WRITE_FIELD )
513     - new S/R (to replace MDSWRITEMETA), which allows to write more
514       informations (variable names, time ...) to meta files.
515     - modify rdmds.m to give back the meta file content.
516    o pkg/diagnostics: change vertical interpolation to be safer, and more
517       flexible (define p-levels to interpolate to in data.diagnostics);
518      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
519       diagnostic pointer.
520    o pkg/seaice: more cleaning up of seaice_growth, added many comments
521    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
522    o fix multi-category seaice:
523     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
524       SEAICE_MULTICATEGORY
525     - fix short wave heat flux
526    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
527       and allow to use EVP solver. Change forward lab_sea: test both EVP
528       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
529    o Initial check-in of lab_sea adjoint
530      (very similar to natl_box_adjoint/code_seaice)
531      * used C-grid and EVP solver
532      * used KPP, GM/Redi
533      * uses inAdExact=.TRUE.
534      * gradient checks fail for both ADM and TLM
535        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
536        f.d. gradients actually seem more problematic than ADM, TLM gradients;
537        issue is related to forward mismatch between g77 an ifort
538    o pkg/seaice: overhaul of thermodynamics
539     - growth.F and groatb.F are replaced by new routine seaice_growth.F
540     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
541     - move a few global fields out of SEAICE.h into seaice_growth.F and
542       make them 2D (FICE/QNETO/ ...)
543     - remove FO (it is the same as QNETO)
544     - introduce a few local fields to avoid modifying external fields such
545       as atemp, etc.
546    
547    checkpoint58s_post
548    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
549      changed exf_set_gen.F so that
550        genperiod=0 means input file is one time-constant field and
551        genperiod=-12 means input file contains 12 monthly means
552    o CG2D: use pre-computed solver main-diagonal (stored in common block);
553      this affects truncation error ; generate new output file for exp. which
554      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
555        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
556        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
557        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
558        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
559        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
560    o start implementation of deep-atmosphere and anelastic formulation
561    o verification: remove 2nd copy of input files and use script "prepare_run"
562      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
563    o mom_common/vecinv/fluxform: fix a few initialisation isssues
564    o profiles: fix for multithreaded case
565    
566    o diagnostics: rename few diags:
567      s/'PRESSURE'/'RCENTER '/g
568      s/'TICE    '/'oceFreez'/g
569      s/'TAUX    '/'oceTAUX '/g
570      s/'TAUY    '/'oceTAUY '/g
571      s/'SWFLUX  '/'oceQsw  '/g
572      s/DIFx/DFxE/g
573      s/DIFy/DFyE/g
574      and add few ocean-forcing diagnostics:
575      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
576    o modifications to pkg/seaice/growth.F and budget.F, which change results of
577      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
578      as actual snow thickness.  It now refers everywhere to effective snow
579      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
580    
581    checkpoint58r_post
582    o modifications to pkg/seaice/growth.F, which change results of
583      lab_sea experiment: fixes pertain to melting snow over open water, to
584      masking EVAP under sea ice, and to using the correct AREA variable for
585      computations of EVAP, PRECIP, HSNOW, and GHEFF
586    o add ability to read bathy, salt, and theta using MNC (off by def)
587    o add flooding algorithm and advection of HSNOW for pkg/seaice;
588      both are turned off by default and do no change any results
589    o seaice advection with pkg/thsice: a step toward the use of non-linear
590      advection scheme, but #ifdef or commented out for now (requires more EXCH).
591    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
592      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
593      in natl_box (affects results @ truncation level: update output.txt)
594    o multi-threading and IO:
595      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
596      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
597        (needed to work with SingleCpuIO): tested in all verif. exp.
598    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
599      affects the results (but none of the verification test uses this scheme).
600    o Adding some pkg/diagnostics capability to pkg/seaice
601      (will certainly be subject to changes)
602    o ctrl: adding new control variables:
603      lwflux, lwdown, evap, snowprecip, apressure, runoff
604    
605    checkpoint58q_post
606    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
607      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
608      high_res_cube configuration by 4% on Columbia.
609    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
610      add (in global_with_exf/code) a version of EXF_INTERP_READ without
611      dynamical allocation (seems to work in multi-threaded).
612    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
613      single CPU io) so that TAF does not have to see EESUPPORT.h
614    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
615    
616    checkpoint58p_post
617    o obcs: stop if obcs is used with useCDscheme = .true.
618    o shelfice:
619     - fix a sign error so that no slip at shelfice interface works
620     - remove stop for combination non-hydrostatic code and shelfice. That does
621       not mean, that the results are correct, but at least they are numerically
622       stable
623    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
624    o added adjoint exch routined for all exch*3d* routines
625      and updated flow directives
626    
627    checkpoint58o_post
628    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
629      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
630    o change controling S/R for writing pickup file (new S/R do_write_pickup)
631      and clean-up reading/writing of pickup files.
632    o fix local version of read/write pickup (NH part) in rotating_tank/code
633    o simplify EXCH interface:
634     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
635     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
636    o added the regrid package
637    o shelfice:
638     - add a simple boundary layer scheme to reduce noise
639     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
640    
641    checkpoint58n_post
642    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
643       local variable (not in common block).
644    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
645      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
646      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
647        to work with SingleCpuIO.
648    o add "_d 0" to real constant of pkg/cfc subroutines ;
649       update exp. cfc_exemple & tutorial_cfc_offline output files.
650    o multi-threading and IO:
651      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
652        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
653      - barrier before and after reading.
654      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
655      - avoid using MDS_WRITELOCAL for LAND pkg output.
656      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
657        common-block variables ; Allows multi-threading with master-thread IO.
658    o change default MAX_NO_THREADS from 32 to 4 ;
659      and stop cleanly when MAX_NO_THREADS is too small.
660    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
661    
662    checkpoint58m_post
663    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
664       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
665    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
666       keep global_ocean.90x40x15 (for AD testing) with former secondary test
667       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
668    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
669        add MITgcm_tutorials (= code + all the tutorials)
670    o ecco, option to compute cost for total ssh (mean+anom)
671    o consistent with addition of ptracer and ssh in pkg/profiles
672    o profiles: adding ptracer and ssh
673    o testreport: change multi-test output-file name
674      (from output.txt.{name} to output.{name}.txt)
675    o profiles: now ok for mutli-tiles case
676    o seaice: add 4 parameters for different advection schemes for area,
677      (effective) seaice thickness, enthalphy, and snow height. Their default
678      is the standard parameter SEAICEadvScheme
679    o calc_gw:
680     - add cosFacU in zonal viscous flux (harmonic.visc.).
681     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
682       of tutorial_plume_on_slope.
683    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
684    o calc_gw: true flux-form, account for horizontal grid spacing.
685      update rotating_tank results, but not plume_on_slope (affected at
686      truncation level, 11 digits).
687    
688    checkpoint58l_post
689    o calc_gw:
690     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
691     - remove side-drag for now (need to fix it); update plume_on_slope results.
692     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
693    o commit code to make SST/SSS weights spatially variable
694      (based on either variable in-situ or variable initial T/S weights)
695    o pkg/ecco:
696      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
697        now based on horizontally varying weights wthetaLev, wsaltLev
698      * cost_averagesflags now returns year indices in addition to day, month
699      * sflux balance is performed on annual basis
700        (sflxumm, sfluxmm2, bal_sfluxmm)
701      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
702        including separate counting and multipliers
703    o pkg/rbcs
704      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
705    
706    checkpoint58k_post
707    o testreport:
708     - always build in dir. "build" (if not there, mkdir build instead of building
709       & running in input)
710     - run in dir run (if it exists), in build otherwise.
711     - call prepare_run (if input/prepare_run exists)
712     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
713    o pkg/exf modifications to interpolation and rotation routines for more
714       reasonable treatment of North Pole singularity: for tracers North Pole
715       value is set to northernmost zonal-mean value, for zonal velocity it is
716       set to zero, and for meridional velocity it is set to northernmost value.
717    o pkg/exf/exf_check_range.F
718     - add tile index to diagnostics and move stop statement to the very
719       end of the routine.
720    o pkg/diagnostics: (diagnostics_main_init.F)
721      define title of isomorphic variables according to the current config.
722    o pkg/thsice with pkg/seaice dynamics:
723    - fix domain of computation (interior only, required for exf) and do exchanges
724    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
725    o towards a standard way of dealing with multi-threading in MONITOR
726      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
727    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
728       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
729    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
730    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
731    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
732       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
733    o tracer advection:
734     - clean-up and simplify calc_common_factors.F
735     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
736       advection subroutine (but still not used within DST advection S/R)
737    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
738    
739    checkpoint58j_post
740    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
741      from file (collects calls previously in FORWARD_STEP)
742    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
743    o adjoint store dir. adjusted accordingly
744    o genmake2
745      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
746    
747    checkpoint58i_post
748    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
749      on wind stress (SEAICEstressFactor defaults to 1.)
750    o Total number of Timers is finite (<=40): comment out 2 non-essential one
751      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
752    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
753      on CS-grid: no longer loosing mass.
754    o exf & curvilinear-grid: no longer modify longitude xC & xG.
755    o pkg/ggl90: fix sloppy output and fix a bug
756    o pkg/seaice: added SEAICEuseEVPpickup parameter
757      - Set to false in order to start EVP solver with
758        non-EVP pickup files when using SEAICEuseEVP
759      - fix sign error in diffusion in seaice_calc_rhs
760    
761    checkpoint58h_post
762    * Modifications for bottom topography control
763      o replace hFacC by _hFacC at various places
764      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
765      o add non-self-adjoint cg2d_nsa
766      o update autodiff support routines
767      o re-initialise hfac after ctrl_depth_ini
768      o works for 5x5 box, doesnt work for global_ocean.90x40x15
769    * Adding verification for 5x5 box (4-layer) bottom topography control
770    
771    checkpoint58g_post
772    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
773       used for mean seasonal cycle, mean diurnal cycle); add an example
774       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
775    o pkg/ggl90:
776      - add parameter (minimum surface kinetic energy)
777      - fix bug (avoiding division by zero)
778    o couple pkg/thsice to pkg/seaice:
779      - modify advection in seaice to accomodate new scalar fields to be advected
780      - only muliDimAdection scheme work with seaice/thsice
781      - mapping of thsice-variables to seaice-variables, back and forth
782      - does not break the verification experiments, but does not give the
783        desired results either
784    o pkg/seaice
785      - make (default) second order advection a bit less confusing?
786    
787    checkpoint58f_post
788    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
789      to pkg/seaice):
790      - new routines thsice_map_exf and thsice_get_exf provide the interface
791      - add an additional formal parameter to thsice_solve4temp
792    o pkg/exf:
793      - add new fields wspeed, snowprecip (to be able to couple to thsice)
794      - correct Stefan-Boltzmann constant
795      - new parameter for longwave surface emittance
796      - separate some stuff from exf_bulkformulae into new routines  
797        exf_radiation, exf_wind
798      - add new parameters and constants: longwave emissivity for ocean, ice
799        and snow, evaporation parameters over ice
800      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
801        either wind from stress or stress from wind
802    o pkg/thSIce:
803    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
804    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
805       and THSICE_CALC_THICKN
806    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
807    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
808      to make debugging easier.
809    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
810    o pkg/bulk_force:
811      - clean-up comments and parameters ;
812      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
813    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
814      generate new output for test-experiment: aim.5l_cs.thSI
815    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
816      testreport accordingly
817    
818    checkpoint58e_post
819    o SEAICE_CGRID adjoint done
820    o R_STAR adjoint implemented.
821      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
822      * need to sort out init. of h0facc, etc.
823    o Make pkg/profile fully independent of ecco,cost, etc. stuff
824      to be able to use it in pure forward.
825    
826    checkpoint58d_post
827    o upgrade simple test-experiment to tutorial example:
828     step.1: duplicate the experiment and (step.2) will remove the old copy.
829      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
830      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
831      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
832      tutorial_global_oce_biogeo    <- copy of dic_example
833      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
834      tutorial_plume_on_slope       <- copy of plume_on_slope
835      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
836      tutorial_global_oce_optim     <- empty for now (David ?)
837      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
838     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
839    o correct a sign problem in cost_scat.F
840    o obcs and ptracers: fix boundary conditions for advections schemes
841      with larger stencil
842    o thsice adjoint: start
843    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
844      completeness
845    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
846      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
847    o ptracers adjoint:
848      * avoid extensive recomputatations
849      * fix missing re-init. of gptr (missed by TAF)
850    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
851      me to turn off the excessive output to STDOUT that this package produces
852    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
853      and add those terms in Vector-Invariant formulation.
854    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
855      if the control period (xx_hfluxperiod etc) is 0
856    o in profiles pkg, clean routines and fix details
857    o in ecco pkg, reading ssh data:
858      fix problem in case the model does not start at iter0=0
859    o fix mnc-pickup/restart for ptracers
860    o new package prifiles:
861      code to compute profile-based cost by Gael Forget
862      (modifs in ecco, ctrl, autodiff)
863    o Benign bug fix in initialization (spotted by M. Mazloff) of
864      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
865    
866    checkpoint58c_post
867    o adjoint: finish NLFS adjoint and provide reference output in
868      verification/global_ocean.90x40x15/results_ad_nlfs
869    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
870      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
871      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
872      with SEAICE_CGRID defined.
873    o move calendarDumps from "data" to "data.cal" and clean-up the code
874      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
875    o add useEXF & useCAL flags (for now, set in hard-coded way)
876    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
877      (were missing in NH mode, and wrong in quasihydrostatic mode).
878      waiting for Chris updated version of calc_gw to add those CALLs.
879    o fix bug in quasihydrostatic S/R ;
880      add a test for this option: global_ocean.90x40x15.qshyd
881    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
882      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
883    o add on/off flag useOffLine for package OFFLINE
884    o seaice:
885      - modify advection so that it works also on the C-grid
886      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
887        problem in multi-tile runs with C-grid
888      - add flags for clipping ice velocities and/or masking solver forcing
889      - fix drag (ocean on ice) formulation and a bug that caused noise in the
890        C-grid solver
891      - added a few comments to seaice_diffusion.F
892      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
893        are now exclusive)
894      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
895        required re-ordering the code a little:
896       + make DAIRN global variable (defined in SEAICE)
897       + move computation of the viscosities eta and zeta into a new separate
898         routine (because I need to recompute them in seaice_ocean_stress.F)
899    
900    checkpoint58b_post
901    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
902      update output.txt of exp. aim.5l_cs.thSI
903    o various mnc cleanups and improvements:
904      + shrink lookup tables by factor of ~4
905      + better error reporting when running out of lookup space
906      + able to handle longer path/file names (up to 500 chars)
907    o adjoint:
908      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
909      - TBD: "hidden" mom_vecinv recomp. in dynamics
910    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
911     (allow to differentiate between forcing components using new integer flags:
912      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
913     and add new flag to put Dissipation tendency out of Adams-Bashforth.
914    o ecco
915      - enable trend removal from SSH anomaly obs.
916    o adjoint
917      - a fix for PmEpR when #undef EXACT_CONSERV
918      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
919      - try to fix "hidden" recomp. in forward_step for NLFS
920        (NLFS seems broken sometimes after I checked it in)
921    o seaice:
922     - add c-grid version of the dynamic solver:
923       + three new routines that are the c-grid substitute lsr, dynsolver
924         and ostres
925       + put a few fields that were local to dynsolver into global common
926         blocks, so that I can move the computation of stresses etc into
927         seaice_lsr (saves coding but may break the adjoint).
928     - replace more hardwired parameters by runtime parameters
929     - add ice masks that mask the rhs of the implicit solvers where there
930       is no ice (commented out in seaice_dynsolver, because i am not sure
931       if this works properly), eventually this should replace the clipping
932       of ice velocities in seaice_dynsolver to +/-40cm/s.
933    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
934      include it only where its needed
935    o move balancing of fluxes before the call of external_forcing_surf
936    o seaice:
937      - correct units of turning angles (now they are really in degrees)
938      - move computation of GWATX/Y out of main routine into dynsolver
939      - initialize GWATX/Y in seaice_init
940    o Apply mask on Fresh-Water flux (needed for SSH forcing).
941      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
942    o seaice: add runtime flags for turning angles (default to zero)
943    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
944      and trend from exf forcing and ctrl control adjustments
945    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
946      (since checkpoint57x_post)
947    o change the default rotation period to 86164.s = the Earth rotation
948    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
949      and based on a reference stratification. Tested within hs94.cs-32x32x5.
950    o seaice advection: add code for choosing between the default (2nd order
951      central differences) and multiDim advection schemes provided by
952      pkg/generic_advdiff
953    o seaice:
954      - removed all references to SEAICE_GRID.h fields from
955        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
956        (cubed-sphere configuration will change a little)
957      - grid computations in seaice_init are obsolete now.
958      - cleaned up code a little so that is easier to read (hopefully).
959      - added new (better?) discretizations of default advection and diffusion
960        (turn on with SEAICEuseFluxForm)
961      - replace 1 in 3d global fields by kSurface in growth.F
962      
963    checkpoint58a_post
964    o seaice:
965      - bug fix in advect.F
966    o shelfice:
967      - separate shelfice load anomaly from pload (breaks with time
968        dependent forcing), => introduce constant field shelficeLoadAnomaly.
969        Its default is 0., but it may be computed more cleverly from (unknown)
970        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
971        done offline. A good approximation of the pressure load anomaly is
972        necessary to avoid large initial adjustment processes underneath
973        deep-reaching shelfice.
974      - small fix in ISOMIP shelfice_thermodynamics
975      - add more sophisticated thermodynamics of Hellmer (1989), this is
976        now the default
977      - give a few constants more intuitive names
978    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
979      if bulk formulae are used in long integration (especially EmPmR). Turn
980      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
981      if balancePrintMean, the imbalance that is substracted is printed to
982      STDOUT.
983    o fix bug (typo) in obcs_apply_eta.F
984    o add a new package shelfice which enables us to model the circulation
985      underneath shelf-ice with draughts of hundreds of meters.
986     - works
987     - to do: + include improved thermodynamics
988              + check whether kSurfC (from model/inc/SURFACE.h) can be used
989                instead of new field kTopC
990              + can we use topoFile, Ro_surf and existing code in ini_depth.F
991                instead of new field R_shelfIce and new code in ini_depth.F
992                and ini_mask_etc.F?
993              + adjust vertical mixing schemes?
994    o seaice pkg:
995     - add a cpp-flag to include a simple formula for a salinity dependent
996       freezing point of sea water at the surface
997     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
998       meridional stresses are now different (and hopefully correct)
999    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1000       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1001       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1002    o pkg/diagnostics: add options and parameters for regional-statistics
1003       diagnostics ; define regions by reading a region-mask from a file
1004       (might add other options later)
1005    o pkg/bulk_force:
1006     - add option and parameters to use AIM surface-flux formulae.
1007     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1008       others forcing fields (defined in PARM05, parameter file "data") are loaded
1009       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1010     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1011     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1012     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1013       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1014     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1015    
1016    checkpoint58
1017    o add "--embed-source" option to genmake2 which, when the supporting
1018      tools can be compiled (as determined by genmake2) will turn on the
1019      embed_files package which then embeds the entire MITgcm source code
1020      (*.[fFhc] + Makefile) used for the build within the executable
1021      - requested by CNH but off by default
1022      - adds a paltry <9MB to the mitgcmuv executable in most cases
1023      - only writes the output when useEMBEDSRC in eedata is true
1024    o clean up 3-dim. relaxation codes:
1025      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1026      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1027      * Thanks to Tom Haine for testing!
1028    
1029    checkpoint57z_post
1030    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1031      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1032    o fix the pickup behavior for obcs in combination with ptracers
1033    o fix a bug in ptracers_external_fields_load
1034    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1035      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1036    o transfered surface NH pressure to eta field (if exactConserv).
1037    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1038         and update lab_sea output.txt file.
1039    o completing 3-dim. relaxation code: additional term
1040         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1041      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1042      * At compile time, in "EXF_OPTIONS.h" set
1043          #define  ALLOW_CLIMTEMP_RELAXATION
1044          #define  ALLOW_CLIMSALT_RELAXATION
1045      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1046          tauThetaClimRelax3Dim = 15552000.0,
1047          tauSaltClimRelax3Dim  = 15552000.0,
1048      * 3 cases:
1049          1) Use a constant-in-time 3-dim. field
1050          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1051          3) Real-time relax. to time-evolving prescribed field
1052    o Adding Laplacian-type smoothness constraint on
1053      initial and boundary (forcing) controls (ic, bc)
1054      * enable at compile-time via
1055        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1056      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1057      * Absolute scale somewhat unclear so far
1058      * no area weighting was included since no other cost term does so far
1059    
1060    checkpoint57y_post
1061    First step for a NLFS adjoint
1062    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1063    o new init. routines for calc_r_star, calc_surf_dr
1064    o still need to deal with ini_masks_etc
1065    o testreport seemed happy
1066    checkpoint57y_pre
1067    
1068    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1069    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1070    o add new offset feature to offline pkg (plus minor cleanup)
1071    o cfc fixes for final year of integration
1072    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1073      be in GCHEM_OPTIONS).
1074    
1075    checkpoint57x_post
1076    o fix testreport Pb in multiple test experiment.
1077    o cleanup our namelist syntax in verification:
1078      - make it more F95 standards compliant (some work still needed)
1079      - allows the vast majority of our tests to work with gfortran
1080    o Non-Hydrostatic:
1081     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1082     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1083    o Allow to apply AB on T,S rather than on AB(gT,gS):
1084     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1085     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1086       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1087     - need a "clever" read_pickup to restart from the other AB formulation
1088    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1089    o remove some unused variables (reduces number of compiler warnings)
1090    o adjoint
1091      * Disable useVariableViscosity for adjoint for time being
1092        (there are a number of extensive recomputations)
1093      * Initialize certain variables needed for adjoint
1094    
1095    checkpoint57w_post
1096    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1097                 fix the singleCpuIO RS version of MDSWRITEFIELD
1098       and add a WARNING if using globalFiles=T with multi-processors.
1099    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1100      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1101    o tracer advection scheme:
1102      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1103       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1104       was not very convenient).
1105      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1106       (further tests needed for the implicit DST & Flux-Limiter schemes).
1107    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1108      and sRef for convenience, handy, when you want to initialize
1109      ptracers in a large domain with a constant non-zero value. Also,
1110      untangle ptracers_init.F a little.
1111    
1112    checkpoint57v_post
1113    o change dome exp. to use variable viscosity in side-drag terms.
1114    o remove all the files from the cfc_offline test since they are now
1115      incorporated into tutorial_cfc_offline which has been producing
1116      identical results for a few days of testing
1117    o add new parameter: sideDragFactor to enable half-slip-side BC
1118      and change side-drag S/R to use viscosity from mom_calc_visc
1119      (can switch back by setting sideDragFactor=0.); affects results at
1120      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1121       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1122    o vorticity & strain are now computed without masking, to account for
1123      no-slip-side BC in variable viscosity calculation ; mask is applied
1124      anyway later on, before computing advection/coriolis terms.
1125    o modify exp4 to test new obcs support for reading from external files
1126      and for passive tracers
1127    o fix behavior of ptracers_monitor when monitor output is written to a
1128      netcdf-file; still not independent of monitor.F (writes in the same
1129      file).
1130    o change default value of tRef (put a uniform, meaningful value for ocean
1131      & atmos) and initialize sRef (was missing, as Martin mentioned).
1132    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1133      to be proportional to enstrophy dissipation length.  Thus,
1134       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1135      This is now consistent with Smagorinsky and with the manual.
1136    
1137    checkpoint57u_post
1138    o OBCS and PTRACERS: add open boundary support for passive tracers
1139      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1140        OB-values from file; this is not different from the way theta and salinity
1141        are treated
1142      - however, Orlanski-radiation conditions are not supported, and the model
1143        will stop if you use pTracers and Orlanski at the same time.
1144      - beefed up the rountine obcs_external_fields_load: now only those open
1145        boundary values are overwritten with values from files for which there
1146        are really files, otherwise the OB-fields remain untouched. This makes
1147        it possible to use different OBs at different ends of the domain (as
1148        with EXF)
1149    o reduce number of exch calls in shap_filt (s2).
1150    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1151      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1152    
1153    checkpoint57t_post
1154    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1155    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1156      same truncation, independent of the face number: affects affects several
1157      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1158    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1159      note that biharmonic viscosity + no-slip was not tested in any experiment.
1160    o fix bug in non-linear free-surf side-drag ; generate new output for
1161      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1162    o make mnc honor the writeBinaryPrec flag for most kinds of output
1163    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1164    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1165      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1166    o add brackets in multi-terms sum to get same truncation, independent of
1167      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1168      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1169    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1170      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1171      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1172      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1173      Suggested values of viscosity parameters found in mom_calc_visc.
1174      Many new viscosity diagnostics available.
1175    
1176    checkpoint57s_post
1177    o Add clearing-house for viscosity calculations, mom_calc_visc and
1178      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1179      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1180      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1181      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1182      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1183      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1184      ViscAhStrain and viscAhTension are now retired.
1185    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1186    o In response to JMC's bug report, genmake2 now ignores any soft-links
1187      that it finds in the *current* directory when searching for files.
1188      Soft-links found in any other source directories will still work as
1189      they did before.
1190    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1191      a C routine to unlimit the stack size
1192    o mnc-ify pkg/aim snapshot vars
1193    o mnc-ify pkg/land as requested by Daniel
1194    o various changes to mnc including:
1195      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1196      - output can now be grouped so that all files within a group
1197          change the ITER portion of their names in lock-step together
1198      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1199          and works with both EXCH1 and EXCH2 (but needs more testing)
1200      - writing works for all verification test cases w/ g77 on Linux
1201    
1202    checkpoint57r_post
1203    o make MNC variable initialization happen earlier
1204    o add diagnostics for (almost) each term of the momentum Eq.
1205    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1206    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1207    o remove MINIMAL_TAVE_OUTPUT option ;
1208      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1209    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1210      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1211    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1212    o add time-dependent SST, SSS control
1213    o cost terms in ecco/ modularized (new cost_generic.F)
1214    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1215    o new infrastructure for seaice model vs. obs misfits in seaice/
1216      * driver from the_main_loop.F is seaice_cost_driver.F
1217      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1218      * gradient check in Exp. 6a of natl_box_adjoint/
1219    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1220      (see README file)
1221    
1222    checkpoint57q_post
1223    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1224    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1225      - bug was reported by Jean-Michel and Ian Fenty
1226    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1227      update exp. cpl_aim+ocn output.
1228    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1229      Needed for high-res. runs with large global files
1230      to be able to limit tapelev size
1231    o Changed some tests for adjoint:
1232      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1233      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1234      * global_ocean.90x40x15/ back to default 3-level checkpointing
1235    o Modifications to enable scripted COMMON to MODULE conversion
1236      * verification/OpenAD/code/ has necessary scripts and description;
1237      * converts, compiles and runs successfully;
1238    
1239    checkpoint57p_post
1240    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1241    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1242      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1243    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1244    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1245      (was already the case for dissipation with mom_vecinv,
1246       and also the case for grad.PhiHyd when staggered-timeStep)
1247      This will allow to put dissipation out-off the AB time-stepping.
1248     Unfortunately, affects truncation error. Update output of exp. that "fails"
1249      (cg2d matching number) and leave the others for later: front_relax(10),
1250      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1251      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1252    
1253    checkpoint57o_post
1254    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1255      (2) its ready to be documented during the 20050801 DocFest
1256    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1257      for ideal_2D_oce and lab_sea on linux_ia32_g77
1258    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1259      in global1x1_tot/code_seaice_adj to access indices 32, 33
1260      (worth another tag)
1261    
1262    checkpoint57n_post
1263    o adding precip control xx_precip 32
1264    o adding swflux control xx_swflux 33
1265    o Replacing 10 forcing penalty cost routines by 1 generic.
1266    o Implementing partitioning in time-mean and variable adjustment
1267      for atmos. state.
1268    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1269    o in natl_box_adjoint:
1270      * updated exp 1 to 10
1271        (but does not have time-mean vs. variable split results yet)
1272    o updated global1x1/*_seaice_adj/
1273      to incorporate latest changes
1274    o enable useSingleCpuIO for mdsio vector routines
1275      (applies in particular to tapelev I/O)
1276    o removed inefficient K-loop in all active_file*control*.F
1277    
1278    checkpoint57m_post
1279    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1280      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1281    o pkg/exch2: filling of face-corner halo regions is optional
1282      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1283    
1284    checkpoint57l_post
1285     tag before updating tutorials (pre-release-2)
1286    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1287       for output and interpolation of input fields onto model grid)
1288    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1289       Affects results of exp. rotating_tank ; update output.txt.
1290    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1291          and taking the square quantity and/or using a fraction-weight field.
1292    o fix aim_diagnostics_init.F mate numbers.
1293    o add mnc output capability to diagnostics/diagstat and update
1294      our cvsignore files for the ACSII output generated
1295    
1296    checkpoint57k_post
1297    o lab_sea now uses diagnostics package and provides a suite of
1298      new EXF diagnostics output.
1299    
1300    checkpoint57j_post
1301    o exf
1302      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1303        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1304        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1305      * extended diagnostics output
1306        - now includes all EXF variables
1307        - hs, hl moved to common block
1308        - separate S/R for diagnostics, called after ctrl vector is added
1309        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1310        - EXFqnet contains true Qnet (i.e. includes qsw)
1311      * updated verif. lab_sea, global_with_exf
1312      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1313        to ensure that diagnostics sees a true EXFqnet
1314    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1315    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1316      several times with different frequencies.
1317    o mnc-ify the thsice package as requested by Daniel Enderton
1318      - the monitor--MNC output needs work
1319      - many attributes need to be added (most are currently blank)
1320    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1321      - many attributes need to be added (most are currently blank)
1322    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1323    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1324    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1325      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1326         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1327    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1328     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1329    
1330    checkpoint57i_post
1331    o Diagnostics package was changed: diagnostic allocation is now deactivated
1332      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1333    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1334      add 1rst Order upwind vertical Shear.
1335    o add a quick fix for A/B checkpointing in OFFLINE mode
1336    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1337      end-run around the C/Fortran linking horror in eesup/src/timers.F
1338    o added pkg/runclock: allows user to terminate run based on wall clock
1339    o added non-hydrostatic scaling parameter: nh_am2
1340    o pkg/my82: futile attempt to make results compiler-independent by adding
1341      some "_d 0", etc. no effect.
1342    o for mnc output, fill the 'T' coordinate var with myTime and create a
1343      separate 'iter' variable for iteration count
1344    o pkg/diagnostics:
1345      add new capability: output of Global/Regional & per-level statistics ;
1346      tested against monitor output (including land & thSIce) on various exp.
1347    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1348    
1349    checkpoint57h_done
1350      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1351      data.diagnostics, data.gchem, data.ptracers) is done.
1352    
1353    o pkg/diagnostics: prepare for Global/Regional statistics.
1354      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1355    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1356      and rename it: DIFFERENT_MULTIPLE
1357    
1358    checkpoint57h_post
1359    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1360    o pkg/diagnostics: change output frequency, now in seconds (instead
1361      of Nb of iterations). This requires to change data.diagnostics.
1362    checkpoint57h_pre
1363    
1364    o in mnc, let the user create the output dir if both mnc_outdir_date
1365      and mnc_outdir_num are false
1366    o add fflags() to pkg/diagnostics which allows one to specify, on a
1367      per-file basis, the file precision [default behavior is unchanged]
1368    o added diagnostics to pkg/kpp, including computation of mixed layer
1369      depth based on a temperature/density criterion
1370    o updated verification/natl_box to test the new pkg/kpp diagnostics
1371    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1372    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1373    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1374      not mnc -- this mistake was found by JMC and is now corrected
1375    
1376    checkpoint57g_post
1377    o add Adams-Bashforth 3rd Order time stepping:
1378      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1379      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1380    checkpoint57g_pre
1381    
1382    o make lambda[Theta,Salt]ClimRelax spatially varying
1383      (default remains spatially uniform constant based on tau)
1384    o added new control variables
1385      * init. uVel, vVel, etanN
1386      * lambda[Theta,Salt]ClimRelax
1387    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1388      (suggested by G. Forget)
1389    
1390    checkpoint57f_post
1391    o add parameter "baseTime" = model base time = time at iteration zero
1392      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1393      account for baseTime shift
1394    o move Coriolis arrays from PARAMS.h to GRID.h
1395    checkpoint57f_pre
1396    
1397    o mnc-ifying the seaice package
1398    o introduced an alternative length scale calculation for use in the limiting
1399      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1400    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1401    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1402      as well as grad(vort3).  Made it compatible with both approximate form
1403      for the cubed sphere and full form of these gradients.  Added flag
1404      useFullLeith to select between approximate and full form.  
1405    o add "d0" in getcon.F to reduce differences between compilers/platforms
1406      update output.txt of exp. fizhi-gridalt-hs
1407    o change port_rand funtion to allow to set the seed.
1408    o fix obscure MNC bug involving conversion between reals and integers
1409      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1410        new version is now more standards-compliant
1411    o adjoint-related modifications
1412      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1413      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1414      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1415    
1416    checkpoint57e_post
1417    o Adding eddy stress controls a la Ferreira et al.
1418    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1419    
1420    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1421      update output.txt of exp. fizhi-gridalt-hs
1422    o add more "Z" dimensions and associated coordinate vars to MNC
1423    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1424    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1425      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1426      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1427      months and years.  Requires pkg/cal.
1428    o diagnostics: add pickup functionality
1429      - off by default for backwards compatibility
1430      - current version only uses MDSIO -- MNC will be added
1431    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1432    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1433    
1434    checkpoint57d_post
1435    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1436    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1437      output from the diagnostics package
1438    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1439    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1440      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1441    o add coordinate variables to the MNC output from the diagnostics package
1442    o change MNC-flags default value: true when useMNC=TRUE
1443    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1444      the ability (off by default) to read the grid information using MNC
1445    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1446    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1447    o do snap-shot diagnostics at the middle of the time-interval (instead of
1448      at the end).
1449    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1450      new test for AIM with thSIce + slab-ocean
1451    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1452    o move state variable diagnostics to the beginning of the time step ;
1453      (note: still needs some work specially for snap-shot diagnostics)
1454      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1455    
1456    checkpoint57c_post
1457    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1458    o generate new output.txt files on faulks with g77 & the new -ieee option
1459    checkpoint57c_pre
1460    
1461    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1462      update output.txt of exp. global_ocean.90x40x15
1463    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1464      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1465    o add saltFlux(+File) forcing capability with periodicExternalForcing
1466    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1467    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1468    o improvements for the MNC output from DIAGNOSTICS:
1469      - correct handling of the unlimitied dimension
1470      - all dims now have associated coordinate variables
1471      - variables located at U, V, and Corner ("Z") points are now written
1472        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1473        *all* data points are output
1474    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1475    o added pkg/seaice/seaice_monitor.F
1476    o mdsio_readfield.F can now read files visible only to master MPI process.
1477    o pkg/seaice: some test code for ice-modified ocean stress
1478    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1479      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1480      spurious negative numbers for precipitation and humidity.  Will cause
1481      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1482    o pkg/ctrl/
1483      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1484        May be enabled via doPackDiag
1485      *  introduce z-scaling of
1486         + gradient (doZscalePack) and
1487         + control (doZscaleUnpack)
1488    o pkg/mdsio/
1489      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1490      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1491    
1492    checkpoint57b_post
1493    o simplify options in diagnostics_fill arguments (remove weird combinations)
1494    o fix MNC coordinate variables so that they now contain per-face index
1495      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1496      general, EXCH2 grids are only aligned to a "local" coordinate system
1497    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1498    o Implement instantaneous output within pkg diagnostics:
1499      setting a negative frequency in data.diagnostics produces
1500     "snap-shot" output (as opposed to time-average if freq > 0)
1501    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1502      NOTE: change ptracer diagnostics name: use 2 characters to work with
1503            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1504    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1505      becomes the coordinate variable for the 'T' dimension
1506    o add CF-style coordinate variables to MNC
1507      - just a first cut:  numbers are meaningless on the cubesphere and
1508        missing along the T axis but otherwise it works!
1509    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1510    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1511    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1512      this is based directly on what the model compute, so that the content of
1513      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1514    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1515    o clean up build options files for SunOS, in particular
1516      - remove -traditional from xmakedepend
1517      - change -xarch=v9 to -xarch=native for f77
1518      - restore use of make (not gmake)
1519      - add CC=gcc if using g77
1520    o changes per discussion of AM, JMC, & EH3 today:
1521      - move redundant "grid" variables out of "state" -- in preparation of
1522        creating proper CF-style coordinate variables and in recognition
1523        that any/all grid variables can be easily copied (eg. w/NCO) from
1524        the grid files into any of the other NetCDF files
1525      - *always* output grid variables with MDSIO (this will eventually be
1526        changed)
1527      - output MNC grid file if useMNC is true
1528    o every instance of _END_MASTER() has been found and replaced with
1529      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1530      preprocessors
1531    o re-arrange diagnostics pkg initialisation:
1532     - allow each package to extend the available diagnostics list
1533     - add some checking and fix small problems (multi-threaded, ...)
1534     - new S/R diagnostics_fill (replace fill_diagnostics):
1535       look through the short list of active diag. (instead of the long list)
1536       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1537    
1538    checkpoint57a_post
1539    o this set of changes restores TAMC compatibility
1540      tested for global_ocean.90x40x15 adjoint on trough
1541      (what a pain)
1542    
1543    checkpoint57a_pre
1544    o some modifs in tools/build_options for sunos
1545    o call ctrl_pack for ctrl at end for optimcycle=0
1546    
1547    checkpoint57
1548    o add horizontal bi-harmonic viscosity for vertical velocity
1549      - new parameter viscA4W (defaults to viscA4)
1550      - affects only non-hydrostatic code
1551      - to be done: no-slip lateral boundary conditions
1552    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1553    o implement Implicit Vertical advection for pTracers
1554    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1555      (implemented also for implicit vertical diffusion & advection)
1556    o OBCS: extend application of tracer open boundary conditions
1557      to a strip beyond the boundary of width Olx/Oly
1558    o add call monitor to TAF set of required calls (flow directives)
1559      and include in natl_box_adjoint
1560    o untangle a few ifdefs related to cost, ctrl, autodiff
1561      untangel a few ALLOW_ECCO_OPTIMIZATION
1562    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1563      (theta2, salt2 in ecco_cost_weights)
1564    
1565    checkpoint56c_post
1566    o OBCS as control variables
1567      - update ctrl_ad_diff.list, obcs_ad_diff.list
1568      - remove balance of obcs controls from default
1569      - fix index bug nobcs in ctrl_init
1570      - fix dummy fields filen in ctrl_pack
1571      - add dummy weights for obcs
1572    o lsopt: comment out fort.94 output
1573    o optim:
1574      - remove unnecessary header files
1575      - adjusted namelists
1576      - add xerbla.F to Makefile
1577    o exf:
1578      - multiple modifications of exf_check_range
1579      - unit change in exf_init_runoff from [m/year] to [m/s]
1580    o mdsio:
1581      - i/o-vector change debugLevel from debLevA to debLevB
1582    
1583    checkpoint56b_post
1584    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1585      is called from DO_THE_MODEL_IO
1586      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1587      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1588      - clean up PTRACERS_WRITE_TIMEAVE a little
1589    o add another verification experiment that tests both the cfc-pkg and
1590      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1591      reactive tendencies treated inline with regular timestepping
1592    o testreport previously did a lousy job of comparing small numbers, so
1593      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1594      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1595      testreport.
1596    o ptracers_monitor: bug fix for MPI
1597    
1598    checkpoint56a_post
1599    o GCHEM: finish reorganizating the package
1600      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1601        (introduces another 3D-array for each passive tracer, but only if
1602        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1603        gchemTendency is not needed because the timestep is done separately)
1604      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1605      - GCHEM is now---more or less cleanly---separate from PTRACERS
1606      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1607        so clear to me how that should be done in a general way.
1608    o CFC: improve formatting of output in CFC_ATMOS
1609    o PTRACERS:
1610      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1611        that ALL experiments with ptracers enable can be checked. This makes
1612        GCHEM_MONITOR obsolete.
1613      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1614        monitorFreq
1615      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1616    o add PTRACERS (PTR0[1-5]) to testreport output
1617    o exf_check_range:
1618      * default changed to .TRUE.
1619      * will check values for niter0 if debLevA, every timestep if debLevB
1620      * STOP in exf_check_range if 'out of range'
1621      * range chosen generous to allow for potential extema
1622      TBD: a version with stricter range
1623           permitted range would be runtime parameters
1624    o GMredi:
1625      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1626      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1627      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1628    o GCHEM:
1629      - move call to GCHEM_FORCING_SEP, so that it is now called before
1630        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1631      - introduced a useGCHEM runtime flag and applied it everywhere.
1632      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1633        this flag is now only visible within GCHEM-pkg routines.
1634      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1635        be replaced by a 3D array that is computed before thermodynamics; for
1636        this, the tracer ID iTracer had to be included into the parameter list
1637        of ptracers_forcing
1638      - set up forward_step to call gchem_forcing, that will replace
1639        gchem_forcing_int in ptracers_forcing
1640      - cleaning up
1641    o small cleaning of exch2: remove files that are also in eesupp/src
1642    
1643    checkpoint56
1644    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1645    o mnc: cleanup "full" files--fixes out-of-memory problem
1646    o ECCO-GODAE
1647      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1648      * fully merged and updated from SIO code
1649        windstress sign change affects
1650        - exf_inscal_[u/v]stress
1651        - sign of xx_tau[u/v] adjustments
1652        - signs in cost_scat
1653      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1654      * natl_box_adjoint updated and compressed
1655      * 2-level checkpoint switch added
1656        (tested in EXP. 1 of natl_box_adjoint)
1657      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1658    o SVD
1659      * first complete, non-hacked version for SVD calculations
1660      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1661        performed via direct access files admtlm_vector.it????
1662        (via ctrl_[un]pack)
1663      * optimcycle is used for ARPACK iteration counter
1664        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1665      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1666        and add linear transforms where necessary
1667      * controls are initial/final SST, SSS (can be extended; need to check
1668        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1669    o mdsio: filename info to both stderr, stdout
1670    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1671      from sign change
1672    
1673    checkpoint55j_post
1674    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1675      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1676    o add consistent build directories and .cvsignore files to verification
1677    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1678    o make all subroutines 30 or less characters in length for certain older
1679      compilers to work (a thorough search only turns up two routines in
1680      pkg/ptracers)
1681    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1682      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1683    
1684    checkpoint55i_post
1685    o change arrays for total vertical diffusivity (2.D if explicit,
1686      3.D if implicit) ; each ptracer uses its own background value.
1687    o added mnc/NetCDF output capability to ocn_compon_interf
1688      - added bits to verification/cpl_aim+ocn so that it can run on
1689        ITRDA and other clusters without the mpirun "-wd" option
1690    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1691      configuration
1692    o give MNC the ability to create additional files rather than
1693      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1694      - the default is just less than 2GB which is a practical limit
1695        on many systems
1696    o Compute the non-local term using either KPP vertical diffusivity (=default)
1697       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1698    
1699    checkpoint55h_post
1700    o add verification test "vermix"
1701    o remove all the *_ioinc flags and replace with the single global
1702      outputTypesInclusive flag
1703    o allow to set a vertical profile of vertical diffusivity for T & S
1704    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1705    o useMNC moved from data.mnc to data.pkg
1706    
1707    checkpoint55g_post
1708    o Renaming carbon AD experiments to comply with testreport conventions
1709    o Updating adjoint of Held-Suarez hs94.1x64x5
1710    o Fixing directives for non-ECCO forward_step, after ECCO directives
1711      have been fixed to avoid recomp. of do_oceanic_phys
1712      Works well for global_ocean.90x40x15,
1713      but recomp. issue remains for carbon
1714    o Updating adjoint output for natl_box_adjoint after
1715      pkg/ecco has been modified (see taga c55d_post)
1716    
1717    checkpoint55f_post
1718    o rename to timeave_init_fixed
1719    
1720    checkpoint55e_post
1721    o some delicate re-shuffle of store directives to avoid one
1722      extra call of do_oceanic_physics
1723      affects ecco_the_main_loop.F, do_oceanic_physics.F
1724      checkpoint_lev1_directives.h
1725    o NB: this may break global_ocean adjoint temporarily,
1726      but it is clear how to fix it. Will do later, need this now.
1727    
1728    checkpoint55d_post
1729    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1730    o ecco_cost_weights is modified to 1x1 runs
1731    o modifs to allow observations to be read in as
1732      single file or yearly files
1733    o enable to read exf forcing fields as either
1734      single file or yearly files (flag useExfYearlyFields)
1735    checkpoint55d_pre
1736    
1737    o switch between 2-level and 3-level checkpointing
1738    o add ability of MNC to write local and "partial" (eg. 2D slices where
1739      the full 3D field is never actually stored) arrays to NetCDF files
1740      with the correct (that is, the complete multi-dimensional) set of
1741      array indicies
1742      - used in mom_vecinv() to write the diagFreq output
1743      - tested (demonstrated) in verification/aim.5l_cs
1744    o further mnc-ification
1745      - add verification/lab_sea to the list with mnc setups
1746      - fix undefined mnc v-names in cd_code
1747      - add kpp to mnc output (both snapshot and timeave)
1748    o non-hydrostatic code
1749      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1750        in calc_gw.F
1751      - defaults to viscAh
1752      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1753        friction or Leith) in non-hydrostatic mode, as long as there is
1754        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1755    o pkg/cost
1756      extend simple cost functions to treat time mean quantities
1757      (T,U,V) via cost_accumulate_state from cost_tile
1758    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1759        be 2 times larger than the minimum size the advection scheme requires.
1760        now get a perfect conservation of salt in advect_cs test-exp (updated)
1761    o GGL90 (Gaspar's TKE mixed layer)
1762      - add horizontal diffusion of TKE, requires exchanges in
1763        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1764        default. In OPA there is no horizontal diffusion of TKE but the
1765        mixing coefficients are computed from a horizontal average of TKE of
1766        6 points or so. I think that diffusion has a little more physical
1767        justification.
1768      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1769        was in vain)
1770      - mask tke-variable in ggl90_init
1771    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1772    o fix biharmonic diffusion on CS-grid.
1773    o more obcs stuff
1774      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1775        for reading boundary values. This routine is called from
1776        obcs_prescribe_read
1777      - updated obcs_check
1778      - changed sponge layer relaxation parameter units for days to seconds
1779      - turned off sponge layer by default
1780      - changed argument list of OBCS_CALC to myTime+deltaTclock
1781      - fixed about 35 bugs in obcs_external_fields_load
1782    
1783    checkpoint55c_post
1784    o obcs stuff
1785      - new runtime flags useOBCSprescribe, useOBCSbalance
1786      - re-arranged obcs_calc
1787      - moved exf_getobcs to obcs_prescibe_read
1788        obcs_prescibe_read is called after ORLANSKI stuff
1789        and independent of it (executable can contain all).
1790      - updated obcs_check
1791      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1792        These may be necessary only if tangential velocities are
1793        prescribed at OB, not sure, needs testing.
1794    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1795      which simplifies the calls and passes the ifc check-bounds test
1796    
1797    checkpoint55b_post
1798    o add a 2D scalar, Z location, exchange_2 routine.
1799    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1800      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1801      affects advect_cs results (for the wrong reason): update output.txt
1802    o use a more standard discretization for biharmonic viscosity ;
1803     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1804      affects results of dome set-up: update output.txt
1805    o fix gad_advection.F (CubedSphere part), back to version 1.23
1806    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1807    
1808    checkpoint55a_post
1809    o merged code to
1810      * prescribe/read time-dependent open boundaries
1811        (works in conjunction with exf, cal)
1812      * sponge layer code for open boundaries
1813      * each boundary N/S/E/W now has its own CPP option
1814        (healthy for the adjoint)
1815    
1816    checkpoint55
1817    o up-to-date adjoint of previous breaks
1818      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1819      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1820      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1821      - carbon: * remove tr1-related adjoint verification
1822                * add ptracer as control variable
1823    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1824      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1825    
1826    checkpoint54f_post
1827    o in verification/carbin/ remove experiment related to
1828      ALLOW_PASSIVE_TRACER (array tr1 etc)
1829      code_ad/ input_ad/ results_ad
1830    
1831    o add two new packages
1832      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1833        + subject to optimization (memory)
1834      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1835        + subject to reordering (many GOTOs in the original code)
1836        + so far opps is called for every (i,j) point, and then operates in
1837          the vertical; one may want to reorder the scheme in order operate in
1838          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1839          fields)
1840    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1841      - all verification tests compile and run with linux_ia32_g77
1842      - defaults are compatible with current input files--nothing
1843        should change if you were not previously using MNC
1844      - MNC output has been added in numerous places (eg. timeave)
1845        but there are still a few writes not yet do-able with MNC
1846        (this is in progress)
1847      - flags now allow for either/or/both use of MDSIO and MNC and
1848        documentation will soon follow
1849      - numerous small formatting cleanups for ProTeX
1850    o add version info (via BUILD_INFO.h) to MNC and stdout
1851    
1852    checkpoint54e_post
1853    o add two new packages
1854      - pp81 (Packanowski and Philander, 1981), Richardson number and
1855        stratification dependent mixing
1856      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1857      - these scheme operate in a similar manner as KPP (without ghat, of
1858        course), however there is only one diffusivity that is used for both
1859        temperature and salinity (and passive tracers)ç
1860    o add offline package
1861    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1862      provided by Stephanie Dutkiewicz
1863    o genmake2: add ability to search for C compilers and cleanup test output
1864      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1865    
1866    checkpoint54d_post
1867    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1868    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1869      leading to additional shift by 5 days each year of integration
1870       (i.e. leading to considerable offset over the years)
1871    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1872    o start with no AB and no initial filtering (staggerTimeStep):
1873      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1874    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1875      (external loading & cpl import/export stay in forward_step.F)
1876    o update coupling interface to work with new staggerTimeStep
1877    o change MDSIO ptracers_pickup.
1878    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1879    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1880    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1881    
1882    checkpoint54c_post
1883    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1884      this affects (truncation error) output.txt of test-exp:
1885       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1886    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1887    o change Qnet to always be the net heat flux, (+upward).
1888      affects (truncation error) output of natl_box exp.: updated
1889    o define the max number of passive tracers in PTRACERS_SIZE.h
1890    o start to test mnc routinely in exp0
1891    o add sea-ice loading (sIceLoad) as a new forcing field.
1892    
1893    checkpoint54b_post
1894    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1895       impressive on Altix and Opteron systems)
1896    o diagnostics can now write NetCDF files through the mnc package
1897    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1898    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1899    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1900      affects (truncation error) output of lab_sea & natl_box exp.: updated
1901    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1902    
1903    checkpoint54a_post
1904    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1905    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1906    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1907    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1908      + internal_wave (shift in writing cg2d_ini_res)
1909    checkpoint54a_pre
1910    
1911    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1912      - modified verification/lab_sea and natl_box_adjoint accordingly
1913    
1914    checkpoint54
1915    checkpoint53g_post
1916    o prepare splitting of thermodynamics: store convect.counter in common block
1917    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1918      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1919    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1920    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1921    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1922    o restore adjointability
1923    
1924    checkpoint53f_post
1925    o modifications that affect AIM experiment results (update output.txt):
1926      - no advection of S at top interface Nr (pkg/generic_advdiff)
1927      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1928    o AIM pkg:
1929      - include stability function into surf.Flux derivative relative to Tsurf
1930      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1931    
1932    checkpoint53e_post
1933    o merged cylindrical coord configuration
1934    o added rotating_tank experiment
1935    checkpoint53e_pre
1936    
1937    checkpoint53d_post
1938    o faulks upgraded: re-generate output.txt that have changed:
1939       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1940    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1941    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1942    o added Sadourny discretization of Coriolis
1943      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1944      - re-enabled use of omega3 (useAbsVorticity)
1945    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1946      vector-invariant equations
1947      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1948    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1949      hopefully without new bugs
1950      - still to do: biharmonic friction for non-hydrostatic w
1951    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1952    o regenerated output for global_ocean_ebm (using -ieee)
1953    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1954      of mom_common/
1955      - simple re-arrangement of instructions within computing loop
1956    checkpoint53d_pre
1957    
1958    checkpoint53c_post
1959    o new version of coupler for AIM+thSIce and Ocean models
1960     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1961     - land: change Evaporation of snow
1962     - aim with thSIce: fix bug in snow-precip.
1963    o changes to calc_gw.F
1964     - bug fix for w^2 term near the bottom boundary
1965     - (hopefully) improve the lateral slip boundary condtions for use with
1966        partial/looped cells
1967      - because the bug fix changes two verification experiments anyway (exp5
1968        and plume on slope), change the lateral boundary condition from half slip
1969        to the value of no_slip_sides
1970    o ebm package wasnt quite up to the parallel task. Fixed that.
1971    o Adjoint of EBM package + verification
1972      * TLM OK
1973      * ADM not sufficient accuracy yet (needs further testing)
1974    
1975    checkpoint53b_post
1976    o Commiting new energy balance model to repository
1977      * package is pkg/ebm
1978      * verif. is verification/global_ocean_ebm
1979      * references are in ebm_driver.F
1980    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1981    C        Global thermohaline circulation. Part I:
1982    C        Sensitivity to atmospheric moisture transport.
1983    C        J. Climate 12(1), 71-82
1984    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1985    C        Global thermohaline circulation. Part II:
1986    C        Sensitivity with interactive transport.
1987    C        J. Climate 12(1), 83-91
1988    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1989    C        Destabilization of the thermohaline circulation
1990    C        by atmospheric eddy transports.
1991    C        J. Climate 7(12), 1870-1882
1992    o Will need long integration testing.
1993    checkpoint53b_pre
1994    
1995    o created pkg/mom_common in preparation for variable viscosity code
1996    o renamed and split ini_mnc_io
1997    o pkg/land: only liquid water can diffuse or run-off
1998    o AIM using land: soil wetness availability account for snow
1999    o added printMapIncludesZeros to EEPARMS namelist
2000    
2001    checkpoint53a_post
2002    o restore TAMC compatiility for exf_constants.h
2003      (no usage of _d in .h)
2004    o Additional storing in KPP in an attempt to fix
2005      TAMC problem with adjoint of KPP code.
2006      (no success...)
2007      Identical code works fine with TAF.
2008    o Fixed verification/natl_box_adjoint experiments.
2009      Initial conditions for Experiments 4 and 5 are now
2010      set to "SEAICE_initialHEFF=0", which is more reasonable,
2011      and hence gives results closer to that of Experiment 2.
2012      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2013    
2014    checkpoint53
2015    o stable checkpoint with up to date adjoint
2016      TLM tests only run for 1st grdchk at the moment. Its unclear if
2017      this is a code problem or a problem with resetting code for g_
2018      variables that is being autogenerated wrong.
2019      Otherwise:
2020       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2021       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2022         are both still in chaos following their security messes.
2023    
2024    checkpoint52n_post
2025    o various build (mostly genmake2) changes including:
2026      - ability to build/run more easily within Cygwin and MacOS X
2027      - more complicated Makefiles with a stronger dependence on Gnu Make
2028    o pkg/seaice modifications
2029      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2030        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2031        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2032      - changed proxy for geostrophic velocity and updated
2033        verification/lab_sea/results/* accordingly
2034      - removed ADI dynamic solver from pkg/seaice
2035      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2036        they caused a segmentation fault under certain circumstances
2037      - removed unused field WATR
2038    o bug fix in exf-package:
2039      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2040         now reflect that.
2041    o small fixes in the cal-package:
2042      - set reference date to first of January for the 'model'-calendar
2043      - failing of cal_CheckDate in cal_FullDate now actually results in a
2044        warning
2045    o small modifications in exf-package to increase flexibility:
2046      - change climtempfreeze from a constant to a runtime parameter that
2047        is specified in data.exf_clim (default = -1.9)
2048      - introduce runtime parameter windstressmax (default = 2.0) that is
2049        specified in data.exf
2050    o fix in pkg/thsice:
2051      - update Evap (Tsf changes) to be consistent with Latent heat flux
2052      - maintain snow precipitation unchanged (even if Tsf >=0).
2053     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2054    
2055    checkpoint52m_post
2056    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2057      this does not change any of the results, because myIter=0 in swfrac always
2058      lead to jwtype=2 (the default anyway), but the call makes little sense
2059      as a default
2060    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2061    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2062      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2063    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2064    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2065    o extending useSingleCpuIO option to work with new exch2 I/O format
2066      - old-style, missing-tile I/O is still accessible by defining CPP
2067        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2068    o monitor package can write to NetCDF files and/or STDOUT
2069    o fix re-definition bug in MNC_GRID_INIT_ALL()
2070    o doc/api_reference added
2071      - a framework for building an API Reference Manual using all
2072        the "protex" comments embedded in the code
2073      - see pkg/generic_advdiff, pkg/mnc for examples
2074    o MNC:
2075      - make myThid the last argument for all subroutines
2076      - new default for the grid files: NO halos
2077      - add useMNC and other run-time flags
2078      - separate per-file-group handling of the unlimited dimension
2079      - early initialization of MNC w/ flags read at the eeboot stage
2080        and lookup tables set in initialize_fixed
2081      - write all MNC output to a freshly-created directory
2082    o thermodynamics sea-ice (thsice) is now tested with testreport.
2083    o test exp. advect_cs: use the standard cs32 grid ; update output.
2084    o Added functionality to grdchk:
2085      pick global i,j,k position (or nearest wet) where to perform check.
2086    
2087    checkpoint52l_post
2088    o new land formulation:
2089      a) use ground enthalpy as prognostic variable to ensure exact
2090         energy conservation.
2091      b) account for water temperature and for latent heat of freezing
2092         in all processes (rain, run-off, ground storage)
2093      c) compute surface and ground temperature implicitly.
2094    o aim_v23 modification for new land model:
2095      a) Treat separately land / ocean / sea-ice surface fluxes
2096         to allow implicit computation of land & sea-ice surface temp.
2097      b) add snow precipitation.
2098    checkpoint52l_pre
2099    
2100    o fix problem (when 1 tile is empty) in min/max monitor.
2101    o fix bug in timeAve (u,vZetatave in common block)
2102    o no restoring terms under ice for pkg/seaice
2103    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2104    o bug fix for pkg/seaice pickups
2105    o change MNC call locations and add coordinate attributes
2106    o mask vorticity at the corner ; affects global_ocean.cs output
2107    o fix ini_curvilinear_grid ; test CS experiments with mpi
2108    o aim.5l_cs: modify sea-ice fraction input file ; update output
2109    o exf: Adding simple range check routine for exf fields after read
2110    
2111    checkpoint52k_post
2112    o removed top-level directory "diags"
2113      - we migrated these functions to pkg/timeave a long time ago
2114    o fixed bug introduced in pkg/monitor
2115    o accuracy ctrlprec = 32 insuffient for gradient checks using
2116      averaged fields (I/O via cost_averages)
2117      -> use ctrl.h in active_file*.F to control I/O precision.
2118    o paramter list of CALL ADTHE_MAIN_LOOP
2119    o added initial do_the_model_io to ecco
2120    o set all ...Freq to zero after cost_final
2121      taveFreq, dumpFreq, pChkptFreq
2122    o MAIN and ECCO differentiability restored
2123    
2124    checkpoint52j_post
2125    o fix nchklev in tamc.h for global_ocean...
2126    o Bringing flow and store directives up-to-date
2127    o Really weird thing!
2128      call do_the_model_io from the_main_loop with parameters
2129      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2130      TAF places a faulty re-call of initialise_varia
2131      after cost_final call which should not be there!
2132    checkpoint52j_pre
2133    
2134    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2135      error messages
2136    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2137    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2138      debug output
2139    o modfied mdsio_writefield.F to handle non-global files under exch2
2140    o update AIM Cubed-Sphere exp (aim.5l_cs):
2141      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2142    o update AIM Equatorial Channel exp:
2143      use standard aim_v23 pkg and change the SST fields to be more realistic.
2144    o globalFile now works with exch2
2145    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2146      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2147    o limit timeave output for hi-res integrations
2148    
2149    checkpoint52i_post
2150    o removed CPP_EEOPTIONS.h from verification/*/code
2151    o updated the tiling for global_ocean_pressure
2152    checkpoint52i_pre
2153    
2154    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2155      the old pkg/aim).
2156    
2157    checkpoint52h_pre
2158    o shortened offending lines in exch2_send_rx?.template
2159    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2160    o genmake2: add build & execute test for NetCDF code
2161    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2162      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2163    o added useSingleCPUIO flag to monitor.F and mon_out.F
2164    o added temporary hack for sea-ice dynamics on the cube:
2165      metric terms are ignored and it is assumed that
2166      there is no sea-ice on cube faces 1, 2, 4, and 5.
2167    
2168    checkpoint52f_post
2169    o added exch2 cube routines to pkg/exch2
2170    o modified hs94.cs-32x32x5 to use it
2171    o added new grid files to hs94.cs-32x32x5
2172    checkpoint52f_pre
2173    
2174    checkpoint52e_post
2175    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2176      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2177    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2178      to work with implicit vertical advection and AB ;
2179    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2180    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2181     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2182    checkpoint52e_pre
2183    
2184    o fix bug in impldiff when Nr=1 or Nr=2.
2185    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2186    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2187    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2188      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2189    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2190    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2191    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2192    
2193    checkpoint52d_post
2194    o re-tiled many expts to allow comparison in multi-processor mode
2195      - updated output accordingly
2196      - changed hs94.128x64x5 to use intial T from file rather than use the
2197        random number generator
2198    o add infrastructure in model routines for fizhi and gridalt packages
2199    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2200    o changes to permit hi-res, cubed-sphere, configuration
2201      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2202      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2203      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2204        of surface winds for the cube
2205      (A verification experiment, based on global_ocean.cs32x15, but with
2206       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2207       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2208       complete with example surface forcing files and matlab scripts to look
2209       at the output and compare it with that of global_ocean.cs32x15.)
2210    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2211       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2212       to conform to the common rule.
2213    o check-in the first version of the coupler + interfaces for multi-components
2214       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2215       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2216       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2217       - ocean and atmos. share the same horizontal grid (no interpolation).
2218       - exchanges between component and coupler is done in forward_step
2219    o new verification experiment, cpl_aim+ocn:
2220       coupled ocean - AIM atmosphere on cs32 grid.
2221    
2222    checkpoint52d_pre
2223    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2224    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2225    
2226    checkpoint52c_post
2227    o Fixing OPTIONS files for use of exf:
2228      - ALLOW_ECCO not needed
2229      - ECCO_CPPOPTIONS.h should not be included from
2230        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2231        as has been the case in the past
2232      - All cal/exf related options are currently set in
2233        single header file. Should remain so until we
2234        agree on a consistent new policy.
2235    o Removed all CPP options for cal package.
2236      cal has no more CPP options.
2237    o modified STOREs in GAD_ADVECTION
2238    o corrected key comp. for passkey
2239    
2240    checkpoint52b_post
2241    o new version: "thsice" of thermodynamic sea-ice pkg:
2242     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2243     - modify fluxes but do not change theta directly;
2244     - light cleaning of bulk_force pkg (still needed with thsice).
2245     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2246       + output_thsice.txt to test thsice & bulk_force pkgs.
2247    o put back grid & coriolis monitor output.
2248    checkpoint52b_pre
2249    
2250    o call "do_the_model_io" at the beginning (=> dump initial state)
2251    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2252    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2253      (need info on NUMBER_OF_PTRACERS)
2254    o missing PTRACERS headers in some routines
2255    o default tamc.h in pkg/autodiff supposed to crash
2256      to ensure proper customization
2257    
2258    checkpoint52a_post
2259    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2260      - moved surfaceTendencyTice from pkg/seaice to main code
2261      - subroutine FREEZE_SURFACE now limits only surface temperature
2262        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2263        => new output.txt for global_ocean.cs32x15 & global_with_exf
2264      - keep the old version of FREEZE for backward compatibility;
2265        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2266      - corresponding modifs for TAF directives
2267    o added surface flux output variables to TIMEAVE_STATVARS
2268    o time-averaged output for pkg/ptracers
2269    o fix problem with ECCO-related divided adjoint
2270      snapshot file was missing some ad-variables,
2271      but no warning issued by TAF
2272    
2273    checkpoint52a_pre
2274    o some bug fixes for #undef REAL4_IS_SLOW
2275    
2276    checkpoint52 = ecco_c52_e35
2277    o after testing adjoints of checkpoint51u_post
2278    
2279    checkpoint51u_post
2280    o this is the post-merge tag of the ecco-branch
2281      (needs another clean checkout and re-testing)
2282    o various natl_box_adjoint configs and results
2283      but no input fields
2284    o obcs adjoint not yet merged!
2285    o adding ECCO global 1x1 and 2x2 degree configs
2286    o updated/extended some store directives for seaice
2287    o pkg/ecco now containes ecco-specific part of cost function
2288    o top level routines the_main_loop, forward_step
2289      supersede those in model/src/
2290      previous input data.cost now in data.ecco
2291      (new namelist ecco_cost_nml)
2292    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2293    
2294    checkpoint51t_post
2295    o this is the pre-merge tag of the ecco-branch
2296    
2297    checkpoint51s_post
2298    o cleanup: removed various obsolete #define-s
2299    o pkg/grdchk
2300      - renamed 'ph-grd 3' to 'grad-res'
2301      - merged from ecco-branch
2302        (remaining bug fixes for obcs gradient checks)
2303      - additional high-precision output for testreport
2304        (grep for 'precision_grdchk_result')
2305    
2306    checkpoint51r_post
2307    o cleaned up or removed CPP_OPTIONS.h files
2308    o updated results for some of the tests to reflect the new
2309      optfiles (-ieee: -O0 instead of -O3)
2310    
2311    checkpoint51q_post
2312    o cd_code:
2313      - moved cd_scheme.F -> cd_code_scheme.F
2314      - separate read_checkpoint from cd_code_ini_vars.F
2315      - separated cd_code part from write_checkpoint
2316      - updated AD_SOURCE, generated .flow
2317      - added CD_CODE_VARS.h to the_main_loop
2318      - Moving cd_code specific store dir.s to pkg/cd_code
2319    o ctrl package totally restructured
2320      - pack/unpack now optional and decoupled from
2321        xx_/adxx_ I/O
2322      - ctrl_pack/unpack cleaned
2323        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2324      - confined inclusion of AD_CONFIG.h to where necessary.
2325    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2326    
2327    checkpoint51p_post
2328    o create initial cd_code package
2329      - WARNING: the initialization of fields within packages
2330        is broken because INI_FIELDS (where READ_CHECKPOINT is
2331        called) is called *before* PACKAGES_INIT_VARIABLES.
2332        This seems to be backwards since
2333        1) its important to initially zero the entire field including
2334           the "halo" region
2335        2) zeroing needs to be done *before* reading pickup info
2336           and the pickup call might or might not happen in any
2337           particular run
2338      - this needs an overhaul for R2
2339    o cleanup verification/*/code/GMREDI_OPTIONS.h
2340    o cleanup testreport
2341    
2342    checkpoint51o_post
2343    o bringing AD-related verif's up to date with genmake2
2344      - carbon/
2345      - global_ocean.90x40x15/
2346      - hs.94.1x64x5/
2347      - (front_relax/ )
2348    o (more) consistent directory structure for AD-related verif.'s
2349    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2350    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2351    o bug fix in find_alpha.F for MDJWF:
2352      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2353        change rho -> rho-rhoConst
2354      - replace call find_rho to find_rhonum
2355    o initialisation of rFlx extended to full array (required by TAF)
2356      and shifted to thermodynamics
2357    o removed PTRACERS.h in ptracers routine
2358    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2359    o Correcting initialisations for fVerU, fVerV.
2360    o helping TAF to recognize dependency on kUp for
2361      fVerU, fVerV
2362    o Replacing delZ by delR in pkg/ctrl/
2363    checkpoint51o_pre
2364    
2365    o undid all of cp51 pending some cleanups and discussion
2366    o added the [#include "AD_CONFIG.h"] statement to all files that need
2367       it for adjoint/tl #defines
2368     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2369     o removed tools/genmake since it no longer works
2370    
2371    checkpoint51n_post
2372    o modifications to make FREEZE flux visible to pkg/kpp
2373      - moved surfaceTendencyTice from pkg/seaice to main code
2374      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2375      - subroutine FREEZE now limits only surface temperature
2376        (this means new output.txt for global_ocean.90x40x15,
2377         global_ocean.cs32x15, and global_with_exf)
2378    o added surface flux output variables to TIMEAVE_STATVARS
2379    
2380    checkpoint51n_pre
2381    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2382    o added [#include "AD_CONFIG.h"] to all files that use the following
2383      defines:
2384      - ALLOW_ADJOINT_RUN
2385      - ALLOW_TANGENTLINEAR_RUN
2386      - ALLOW_ECCO_OPTIMIZATION
2387    
2388    checkpoint51m_post
2389    o incorporating changes to get TAMC/TAF working in genmake2
2390      - added new TAMC/TAF targets to the Makefile
2391      - various cleanups related to package handling
2392      - these changes should have no impact on the forward model
2393    
2394    checkpoint51l_post
2395    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2396     - faster algorithm for cal_addtime.F
2397     - higher precision arithmetic, where needed
2398     - pkg/exf *startdate variables changed from calendar date to
2399       model integration time
2400    
2401    checkpoint51l_pre
2402    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2403    o enable to apply restoring on S & T only in a latitude band.
2404    o update output (external_forcing_surf modif. change truncation errors)
2405       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2406    
2407    checkpoint51k_post
2408    o change default to: useNHMTerms=.FALSE.
2409     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2410       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2411     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2412        exp1, ideal_2D_oce
2413     - change data file of oceanic exp (leave the results unchanged for now)
2414       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2415    o set gravitySign automatically according to the vertical coordinate used
2416      (and change sign: back to "logical" value: +1 when R increases downward)
2417    o added an include barrier to the default CPP_OPTIONS.h and
2418      removed the #include "PACKAGES_CONFIG.h" from it
2419    o fix a bug in mom_fluxform (from chk51j_post)
2420    
2421    checkpoint51j_post
2422    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2423    o adjusted some flow directives (dynamics, thermodynamics)
2424    o added cubed-sphere case to test cost function
2425    o heckpoint_lev?_directives.h now include
2426      pkg-specific directives, whenever those are enabled.
2427    o Moving pkg-specific flow directives to corresponding pkg
2428      Moving pkg-specific differentiation list to corresponding pkg
2429      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2430      ---> conventions are
2431           - pkg_ad.flow
2432           - pkg_ad_diff.list
2433           - pkg_ad_check_lev?_dir.h
2434    
2435    checkpoint51i_post
2436    o merge of the branch-genmake2
2437      - knowingly breaks the older genmake
2438      - automatic generation of all ALLOW_${PKG_NAME} defines
2439      - new testreport supersedes older testscript
2440    o large number of package inclusion and header cleanups
2441    checkpoint51i_pre
2442    
2443    o new output for adjoin of global ocean vector invariant
2444    o fix for checkpoint of thermodynamic seaice and bulk_force
2445    o Steph gchem various cleanups
2446    
2447    checkpoint 51h_pre
2448    o fixed some single quotes
2449    o modify gchem pkg to be more versatile
2450    o modifications to clean up dic pkg
2451    o add pkg/cfc
2452    
2453    checkpoint51g_post
2454    o provide links for ARPACK and ADM*TLM
2455    o start removing verification/vero/
2456    o update AD-related stuff
2457      (in particular some IF-statements in model/src/ routines)
2458    o adding to verification/global_ocean.90x40x15/ adjoint of
2459      vector invariant setup
2460    
2461    checkpoint51f_post
2462    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2463    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2464      of tracer Green's fucntions for ocean inversion project.
2465    
2466    checkpoint51f_pre
2467    o Added on-the-fly spatial interpolation capability
2468        "USE_EXF_INTERPOLATION" to pkg/exf.
2469      - This is a temporary Cartesian-grid hack until
2470        the super-duper ESMF coupler becomes available.
2471      - See verification/global_with_exf/README for usage example.
2472      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2473        flags and modified pkg/seaice accordingly.
2474    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2475        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2476        non-local transport term.
2477    
2478    checkpoint51e_post
2479    o pkg/mom_vecinv:
2480      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2481      - add time-ave diagnostic of vorticity advection.
2482    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2483    o atmospheric geopotential: - include water vapor effect;
2484                                - use p^kappa in p* scaling.
2485    o land pkg: read initial state from files.
2486    o AIM : add stratospheric drag in the upper level
2487    
2488    checkpoint51d_post
2489    o change function ILNBLNK (=> last non-blank char.) to return zero
2490      (instead of the string length) when the string. char is empty
2491    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2492    o modif's to restore TAMC compatibility
2493      - avoid "_d" constructs in PARAMETER declarations
2494      - avoid interrupting lines by comment lines
2495    o Use cluster local disks for purely local I/O
2496      vs. globally visible disks needed for ctrl stuff
2497      (merged from ecco-branch)
2498      - new active_file_loc... and mdsio_..._loc routines
2499      - affected packages: autodiff, ctrl, grdchk, mdsio
2500    
2501    checkpoint51c_post
2502    o introducing integer flag debugLevel
2503      - debLevZero: suppress all output
2504      - debLevA: standard
2505      - debLevB: equivalent to current debugMode=.TRUE.
2506    o introducing pathname variable mdsioLocalDir for mdsio
2507      that can be specified at runtime
2508      (relevant for cluster I/O to local disk)
2509    `
2510    >>>checkpoint51b_post
2511    adjoint of ptracers
2512    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2513    o extended state in checkpoint_lev?, etc.
2514    o alternative ctrl/cost with tr1 or ptracer
2515    o new comlev1_bibj_ptracers
2516    o new ptracers.flow
2517    o made ptracers_forcing same as external_forcing_s
2518    o added verification for adjoint with ptracers
2519      - adm. grdchk fail so far
2520      - tlm. grdchk OK
2521      - checked tapelev/comlev recomputations: OK
2522    <<<checkpoint51b_pre
2523    
2524    checkpoint51a_post
2525    o added code for biogeochemistry package
2526      - new pkgs: dic, gchem
2527      - new subroutine in ptracers
2528    o modify code for biogeo packages
2529      - in model/src and pkg/ptracers
2530    
2531    checkpoint51
2532    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2533      - autodiff, ctrl, exf, grdchk, seaice
2534      kept separate packages
2535      - cost, ecco, obcs
2536    o updating verification/internal_wave, verification/lab_sea
2537      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2538    
2539    checkpoint50i_post
2540    o Preparing next differentiable checkpoint and sync
2541      of MAIN vs. ecco-branch
2542      - 1st step: this one is differentiable
2543      - 2nd step: next(! not this) checkpoint will have updated packages
2544                  from ecco-branch)
2545    
2546    checkpoint50h_post
2547    o new package "land": provide surface BC for AIM.
2548    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2549    o AIM: use true log-P extrapolation for near surface temp (= as in
2550        F.Molteni paper) ; update aim.5l_cs output.
2551    o New variable in PARM03 for more flexible pickups
2552    o somewhat cleaned package initialisation sequence for
2553      ctrl/ cost/ ecco/ in packages_... routines
2554    
2555    checkpoint50g_post
2556    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2557      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2558      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2559        made the default because of faster convergence than ADI
2560    
2561    checkpoint50f_post
2562    o exf totally restructured
2563      - replaced all exf_set_ routines by one generic exf_set_gen.F
2564        and made sure it's still differentiable
2565      - split exf_getffields.F into new exf_bulkformulae.F
2566      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2567      - updated adjoint/makefile and relevant verif. accordingly
2568    
2569    checkpoint50f_pre
2570     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2571          + change Evap over land. (update aim.5l_cs output)
2572     o added missing .cvsignores and made uniform across expts
2573     o changed configuration of tidal_basin_2d expt
2574     o added pkg/debug functions for tracing code in fatal crashes
2575     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2576     o new fn in pkg/monitor to stop model if solution grows too big
2577     o removed lots of single quotes from comments
2578    
2579    checkpoint50e_post
2580    o make KPP work with PTRACERS
2581     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2582       nearly a copy of kpp_transport_s
2583     - there is no analogue to SurfaceTendencyS, so I have to use
2584       gPtr(of the surface layer) instead
2585    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2586    checkpoint50e_pre
2587    
2588    checkpoint50d_post
2589    o change kpp output from multiple-record state files to single-record state
2590      files analogous to write_state.F
2591    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2592      analogous to the cg2d-related output.
2593    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2594      so that writing to internal file fn (with length 512) fails.
2595    checkpoint50d_pre
2596    
2597    checkpoint50c_post
2598    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2599    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2600    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2601    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2602    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2603    
2604    checkpoint50c_pre
2605    Merging from release1_p13:
2606    o bug fix for pkg/seaice dynamic solver
2607    o Added SEAICE_initialHEFF to pkg/seaice
2608    
2609    checkpoint50b_post
2610    o store u*,v* in gU,V instead of in guNm1,gvNm1
2611    o in order to put the momForcing out of the Adams-Bashforth:
2612      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2613      to timestep.F
2614    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2615    o re-generate output for highly sensitive test-exp:
2616       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2617    
2618    checkpoint50b_pre
2619    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2620    o corrected CPP option mismatch in exf_Bulk... functions for case
2621      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2622    
2623    checkpoint50a_post
2624    o Bug fix for merging between c50 and KPP.
2625      ikey was passed from thermodynamics to kpp_calc via
2626      common block rather than being recomputed in kpp_calc,
2627      in contradiction with new key itdkey.
2628      New key ikppkey created, and tamc.h headers updated.
2629    
2630    checkpoint50
2631    - 2nd step of merge with ecco-branch:
2632      merge changes in ecco-branch back into main trunk
2633    - bug fix in find_alpha
2634    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2635    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2636    - merged some sliced AD support routines
2637    
2638    checkpoint49
2639    merged from ecco-branch:
2640    o exf:
2641      - Enable initialisation of forcing fields to constant
2642        (runtime) values.
2643      - in exf_getffields.F
2644        Reduce i-/j-loop to interior domain, discarding overlaps.
2645        That also fixes wrong TAF-key computations for key_1, key_2
2646        with bulf formulae.
2647      - exf_init.F modify #ifdef for exf_init_evap
2648      - exf_getffieldrec.F, ctrl_getrec.F
2649        The following INT-usages are not safe:
2650          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2651          fldcount = int(fldsecs/fldperiod) + 1
2652        and were modified.
2653    o autodiff: checkpoint_lev...
2654      - updated storing for bulk formulae (some arrays were missing)
2655      - added state for seaice package
2656      - synchronized with main branch
2657    o DIVA:
2658      Modif.s in
2659      - the_main_loop.F
2660      - the_model_main.F
2661      and added cost_final_restore.F cost_final_store.F
2662      o With these changes, it is possible to fully separate
2663        the first forward run to compute the cost function (mdthe_main_loop)
2664        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2665        into separate model executions.
2666        This enables better tuning of DIVA to given queue sizes.
2667      o Loss of cost function value in consecutive DIVA runs is
2668        fixed by storing to 'costfinal' file.
2669      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2670        beginning/end of adjoint integration is accounted for.
2671      The current changes apply to TAF-1.4.26.
2672      TAF has one remaining bug, requiring one manual change
2673      (see MITgcm manual).
2674    o cal: synchronized between MAIN and ecco-branch
2675    
2676    checkpoint48i_post
2677    o Changes to restore differentiability of code w.r.t. previous tag
2678      (mostly adding new routines to make list and replacing
2679      pressure by totPhiHyd).
2680    o Updated and merged grdchk package
2681      - has both ADM and TLM checks
2682      - works for single- and multi-proc.
2683      - output cleaned
2684      - worked successfully for parallel DIVA
2685    o genmake:
2686      - Adding -platform=SP4
2687      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2688    o Modif. for DIVA:
2689      ctrl_unpack should not be called in intermediate DIVA interval.
2690      (similar thing would apply for active files such as
2691      tbar, sbar, psbar, which should not be reinitialised;
2692      only relevant for ecco-branch)
2693    
2694    checkpoint48h_post
2695    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2696    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2697    o Added SEAICE_initialHEFF to pkg/seaice
2698    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2699    
2700    checkpoint48g_post
2701    --- EOS:
2702    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2703      store total Potential in totPhyHyd for diagnostics & EOS.
2704    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2705    --- Pressure/geopotential gradient:
2706    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2707    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2708      ( changes results of global_ocean_pressure )
2709    o NLFS + z-coord.: add eta*Rho' contribution.
2710    o accurate phiHyd when using interface-W at the middle between 2 centers
2711     ( changes results of ideal_2D_oce )
2712    o includes r* 2nd term in potential gradient.
2713    
2714    checkpoint48f_post
2715    Merging from release1_p12:
2716    o Modifications for using pkg/exf with pkg/seaice
2717      - improved description of the various forcing configurations
2718      - added basic radiation bulk formulae to pkg/exf
2719      - units/sign fix for evap computation in exf_getffields.F
2720      - updated verification/global_with_exf/results/output.txt
2721    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2722      (SBO) core products, including oceanic mass, center-of-mass,
2723      angular, and bottom pressure (see pkg/sbo/README.sbo).
2724    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2725      to avoid negative values in shallow regions.
2726      - updated verification/natl_box/results/output.txt
2727      - updated verification/lab_sea/results/output.txt
2728    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2729    o Added useSingleCpuIO option (see PARAMS.h).
2730    o Updated useSingleCpuIO option in mdsio_writefield.F to
2731      work with multi-field files, e.g., for single-file pickup.
2732    o pkg/seaice:
2733      - bug fix in growth.F: QNET for no shortwave case
2734      - added HeffFile for specifying initial sea-ice thickness
2735      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2736    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2737      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2738    o pkg/seaice:
2739      - adjoint-friendly modifications
2740      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2741    
2742    checkpoint48e_post
2743    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2744    o dynamics: change definition of computational domain & adapt mom_fluxform
2745      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2746    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2747        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2748        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2749        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2750        inverted_barometer solid-body.cs-32x32x1
2751      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2752    
2753    checkpoint48d_post
2754    o in preparation for r*:
2755     a) use pre-computed gradient of hydrostatic potential:
2756        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2757     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2758        => affects results of glob_oce_pressure (different truncation error)  
2759      update output.txt of ideal_2D_oce & global_ocean_pressure
2760    
2761    checkpoint48d_pre
2762    o in preparation for r*:
2763      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2764      pass the 2 comp. of the grad. as arguments to momentum S/R.
2765      but for the moment, only used if it does not change the results.
2766    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2767    
2768    checkpoint48c_post
2769    Modifications in treatment of initial flux forcing controls
2770    to avoid extra storing of flux fields.
2771    
2772    checkpoint48c_pre
2773    o Added tidal_basin_2d experiment (currently 1D!)
2774    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2775    
2776    checkpoint48b_post
2777    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2778     (modification to pressure gradient not yet implemented)
2779    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2780      (for U & V) that are used for vertical advection of momentum.
2781    
2782    checkpoint48a_post
2783    o In preparation for r*, use temp. array to compute vertical transport
2784       in flux-form momentum pkg. => change results of few test-exp.
2785      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2786                        lab_sea, natl_box & plume_on_slope
2787    
2788    checkpoint48
2789    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2790    
2791    checkpoint47j_post
2792    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2793    o moved adexch from forward_step to addummy_in_stepping
2794    o added exch in ctrl_map_...
2795    o aveFreq.=0. at end of cost_final to avoid overwrite in
2796      reverse checkpointing loop
2797    o Yet more changes in gmredi:
2798      * adgmredi_calc_tensor
2799        avoiding all recomputation of gmredi_slope_limit
2800      * adgmredi_x/y/rtransport
2801        added flag for excessive storing to avoid recomp. of
2802        u/v/rtans, dTdx/y/z
2803        -> this is not really necessary and very memory-consuming
2804      * adgmredi_slope_psi:
2805        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2806      * gmredi_slope_limit
2807        re-activated full calculation of taperfct for case 'ac02'
2808    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2809    
2810    checkpoint47i_post
2811    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2812    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2813      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2814    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2815    o gmredi: fix few bugs.
2816    
2817    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2818    This will be a good checkpoint to plug into the ecco-branch.
2819    o few modif.'s to get latest version adjointed
2820      (mainly kick out code in ini_linear_phisurf)
2821    o modif's to run adjoint with exactConserv
2822    o case GM_BOLUS_ADVEC should be cleaned
2823      S/R gmredi_slope_psi should be cleaned
2824    o verification/carbon now has exactConserv=.TRUE.
2825    
2826    checkpoint47g_post
2827    o time-average AIM output: becomes independent from statvars time-average
2828      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2829    o After TAF bug fix:
2830      Tested adjoint of gmredi package.
2831      Tests were done with checkpoint47 rather than with latest
2832      checkpoint47f_post since the latter is broken for the adjoint
2833      verification/carbon/ contains both ADM and TLM gradient checks.
2834    Here they are, before they get changed/lost/stolen.
2835    Mostly modif.'s to fix numerical sensitivities.
2836    Gradient checks OK for
2837    - GM_taper_scheme:
2838      * clipping
2839      * ac02
2840      * linear
2841      * glw91
2842      * dm95
2843      * ldd97
2844    - GMREDI_OPTIONS:
2845      * GM_VISBECK_VARIABLE_K
2846      * GM_NON_UNITY_DIAGONAL
2847      * GM_EXTRA_DIAGONAL
2848      * GM_BOLUS_ADVEC
2849    in conjunction with data.gmredi parameters to be checked in
2850    in a few minutes under verification/carbon/code/
2851    
2852    checkpoint47f_post
2853    Merging from release1_p10:
2854    o modifications for using pkg/exf with pkg/seaice
2855      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2856        and SEAICE_EXTERNAL_FLUXES
2857      - pkg/exf CPP options EXF_READ_EVAP and
2858        EXF_NO_BULK_COMPUTATIONS
2859      - usage examples are Experiments 8 and 9 in
2860        verification/lab_sea/README
2861      - verification/lab_sea default experiment now uses
2862        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2863    
2864    checkpoint47e_post
2865    o created a tag prior to creating a branch
2866    
2867    checkpoint47d_post
2868    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2869      at the bottom boundary had an erroneous half slip boundary condition
2870    o added bottom drag and no slip boundary condition capabilities to
2871      oceanic pressure coordinates code
2872    o added new verification experiment global_ocean_pressure, this experiment is
2873      also described in the tutorial section of the manual
2874    checkpoint47d_pre
2875    
2876    checkpoint47c_post
2877    o Added a verification experiment for a global cubed-sphere ocean run
2878      -  verification/global_ocean.cubed32x32x30
2879      -  uses pkg/therm_seaice and pkg/bulk_forcing
2880    
2881    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2882    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2883      when using P-coordinate; only implemented for atmospheric config.
2884    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2885      NOTES: requires option NONLIN_FRSURF to be "#define".
2886    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2887    
2888    checkpoint47b_post
2889    Merging from release1_p9:
2890    o pkg/seaice
2891      - removed GOTO's and added taf directives
2892      - double precision constants to reduce the g77 (Linux)
2893        to F77 (SGI) differences reported in release1_p8
2894    o tools/genmake
2895      - added SGI options
2896    o verification/testscript
2897      - updated to that of checkpoint47a_post
2898    o verification/global_ocean.90x40x15/input/eedata
2899      - modified for SGI f77 compatibility
2900    o verification/lab_sea
2901      - added description of sea-ice model
2902      - added missing matlab routines
2903      - added test of thermodynamics parallelization
2904    
2905    checkpoint47a_post
2906    o new pkg: aim_v23
2907     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2908       for now, keep the same surface forcing as before.
2909     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2910     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2911     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2912    o add diagnostic of surface correction term in monitor output
2913    
2914    o bulk_force and therm_seaice
2915    - Two packages:  bulk_force (Bulk forcing)
2916      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2917    - Earlier integration from Stephaine Dutkiewicz
2918      and Patrick Heimbach.
2919    - Two ifdef statements for compile time,
2920       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2921    
2922    checkpoint47
2923    differentiable version of checkpoint46n_post
2924    o bug fix in quasihydrostaticterms
2925    o * "clean" adjoint code (in terms of extensive recomputations)
2926        can now be obtained for all GMREDI options (i.e. for
2927        - GM_VISBECK_VARIABLE_K
2928        - GM_NON_UNITY_DIAGONAL
2929        - GM_EXTRA_DIAGONAL
2930        - GM_BOLUS_ADVEC )
2931      * However, wrong gradient check problem remains unsolved.
2932      * New CPP options have been introduced for different
2933        tapering schemes
2934    o external_fields_load now part of differentiation list
2935    o pressure needs multiple storing;
2936      would be nice to have store_pressure at beginning or
2937      end of forward_step, e.g. by having phiHyd global (5-dim.)
2938      (NB: pressure is needed for certain cases in find_rho,
2939      which is also invoked through convective_adjustment).
2940    o recomputations in find_rho for cases
2941     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2942    o #define ATMOSPHERIC_LOADING should be differentiable
2943    o ini_forcing shifted to begining of initialise_varia
2944    o Incorporating QNVS line search routines into MITgcm
2945      (this is separate code, and therefore not under pkg)
2946      lsopt/, optim/
2947    o Updated verification/carbon/
2948      - #define GM_VISBECK_VARIABLE_K
2949      - GM_taper_scheme    = 'ldd97'    
2950    
2951    checkpoint46n_post
2952    Merging from release1_p8:
2953    o verification/natl_box:
2954      updating new external_fields_load routine
2955    o New package: pkg/seaice
2956      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2957      The sea-ice code is based on Hibler (1979-1980).
2958      Two sea-ice dynamic solvers, ADI and LSR, are included.
2959      In addition to computing prognostic sea-ice variables and diagnosing
2960      the forcing/external data fields that drive the ocean model,
2961      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2962      The implied surface heat flux is then stored in variable
2963      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2964      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2965      non-local transport term.  Because this call precedes model
2966      thermodynamics, temperature under sea-ice may not be "exactly" at
2967      the freezing point by the time theta is dumped or time-averaged.
2968      N.B.: fairly large differences in accuracy occur across
2969            different platforms/compilers; comparison between
2970            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2971            generated output gives:
2972       T           S           U           V
2973      C D M    c        m  s        m  s        m  s        m  s
2974      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2975      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2976      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2977    
2978      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2979    o GAD:
2980      - generated new common blocks to account for call of
2981        same gad routines with differing traceridentities
2982        (needed to modify tracerIdentity indices in GAD.h)
2983      - generated separate common blocks for case useCubedSphereExchange
2984        (Department of Futurology)
2985      - parameter lists to gmredi_?transport: added tracerIdentity
2986      - added new key indices to tamc.h
2987    o external_fields_load:
2988      - added this routine to TAF list
2989      - needed to make some common blocks global and additional storing
2990        along the same lines as exf package (checkpoint_lev?_directives.h)
2991    o exf:
2992      updated external forcing package
2993      - bug fixes carried over from ecco-branch
2994        (missing OBCS_OPTIONS.h in two routines)
2995      - enable easy to use "no forcing".
2996      - added exf I/O for atmospheric loading
2997      - added exf I/O for runoff data
2998      - transfered scaling between exf <-> MITgcm to exf namelist
2999    o Adding new verification experiment global_with_exf.
3000      This verification experiment is almost identical to the
3001      global_ocean.90x40x15 experiment, except that it uses
3002      the exf (and cal) package instead of the
3003      external_fields_load routine (cf README file).
3004    
3005    checkpoint46m_post
3006    o modified testscript to return -- when there are no lines of "%MON" output
3007    o added new flag "quasiHydrostatic" for QH mode
3008      and new routine quasihydrostaticterms()
3009    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
3010      New routine: mom_u_coriolis_nh()
3011    o fixed sign of non-hydrostatic metric terms in u and v equations.
3012      Depend on correct sign of gravitySign.
3013    o added work.pc* to .cvsignore in aim directories using ifc
3014    o introduced flag for controllin non-hydrostatic metric terms
3015    o removed gravitySign from PARM04
3016    o switched to g77/ifc from pgf77 in aim experiments
3017    
3018    checkpoint46l_post
3019    o made convective adjustment work with pressure coordinates:
3020     - changed the direction of k-loop in convective_adjustment.F for the
3021       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
3022     - adjusted the reference pressure k-index in convective_adjustment.F
3023     - adjusted the convection condition in convect.F (in analogy to
3024       calc_ivdc.F)
3025     - convective_adjustment no longer computes anything on the halos
3026     - removed the warnings about negative salinity from find_rho.F and
3027       find_alpha.F; instead the new routine look_for_neg_salinity, called
3028       at the beginning of find_rho, find_alpha, and find_beta, does a
3029       check of the entire slice, if CPP-option
3030       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
3031    checkpoint46l_pre
3032    
3033    checkpoint46k_post
3034    o fixed the verification/global_ocean.90x40x15 experiment:
3035     - new bathymetry (the world according to A., JMC, and M.)
3036     - new initial fields and forcing fields (*.bin files)
3037     - new POLY3.COEFFS (for the next release one should switch to a full
3038       equation of state: JMD95P or MDJWF)
3039     - fixed several errors and redundancies in the data file
3040     - experiment uses looped cells
3041     - added matlab directory with diagnostic scripts for plotting of output
3042    
3043    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
3044     - read AIM physics parameters from a file (data.aimphys)
3045     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
3046    
3047    checkpoint46j_post
3048    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
3049    o move wVel computation at the end of the time step, in S/R integr_continuity
3050    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
3051    o update timeave pkg for wVel diagnostic.
3052    checkpoint46j_pre
3053    
3054    checkpoint46i_post
3055    o Clean up AIM package (and keep the results unchanged):
3056      include CPP_OPTION and use IMPLICT NONE in all routines ;
3057      declare all the variables _RL ; use _d 0 for all numerical constants.
3058      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
3059    
3060    checkpoint46h_post
3061    o cleaned up the use of rhoNil and rhoConst.
3062      - rhoNil should only appear in the LINEAR equation of state, everywhere
3063        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
3064        and the dynamical equations are all divided by rhoConst
3065    o introduced new parameter rhoConstFresh, a reference density of fresh
3066      water, to remove the fresh water flux's dependence on rhoNil. The default
3067      value is 999.8 kg/m^3
3068    o cleanup up external_forcing.F and external_forcing_surf.F
3069      - can now be used by both OCEANIC and OCEANICP
3070    checkpoint46h_pre
3071    
3072     Added code to convert surface volume flux (fresh water) into
3073     a mass flux when using P coordinates in the ocean (OCEANICP).
3074     Note: It assumes you have set rho0=rhoConst=density of fresh water.
3075    
3076    checkpoint46g_post
3077    o Include a new diagnostic variable phiHydLow for the ocean model
3078      - in z-coordinates, it is the bottom pressure anomaly
3079      - in p-coordinates, it is the sea surface elevation
3080      - in both cases, these variable have global drift, reflecting the mass
3081        drift in z-coordinates and the volume drift in p-coordinates
3082      - included time averaging for phiHydLow, be aware of the drift!
3083    o depth-dependent computation of Bo_surf for pressure coordinates
3084      in the ocean (buoyancyRelation='OCEANICP')
3085      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
3086        Theta, Salinity, and Pressure in the parameter list. This routine is
3087        presently contained in find_rho.F. This routine does not give the
3088        correct density for 'POLY3', which would be a z-dependent reference
3089        density.
3090    o cleaned up find_rho
3091      - removed obsolete 'eqn' from the parameter list.
3092    o added two new verification experiments: gop and goz
3093      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
3094    checkpoint46g_pre
3095    
3096    checkpoint46f_post
3097    o Enable tangent linear (forward mode) gradient checks:
3098      - extended active file handling to g_... files
3099      - added TANGENT_SIMULATION to theSimulationMode
3100      - extended grdchk package accordingly
3101    o added tangent linear setup in verification/carbon/code_ftl
3102    o added adjoint setup in verification/front_relax/code_ad
3103    
3104    checkpoint46e_post
3105    o Added new equation of state -> MDJWF
3106      - EOS of McDougall et al., 2002, JAOT, submitted
3107      - caveat: the equation of state is only valid for a smaller (more
3108        realistic?) range of values than JMD95P/Z and UNESCO
3109      - added masks to the calculation of pressure in store_pressure
3110      - added more check values for density in check_eos (ini_eos.F), some of
3111        the old check values are out of the range of the MDJWF-eos, so don't
3112        expect perfect matches for those
3113    checkpoint46e_pre
3114    
3115    checkpoint46d_post
3116    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
3117      'OCEANICP', also initialised field pressure correctly in ini_eos in the
3118      case of pressure coordinates. eosType='JMD95Z' in
3119      combination with buoyancyRelation='OCEANICP' now causes an error.
3120    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3121      in find_alpha/beta.
3122    checkpoint46d_pre
3123    
3124    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3125      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
3126    
3127    checkpoint46c_post
3128    o Changes necessary for ocean in p-coordinates
3129     -  Added new buoyancy relation = 'OCEANICP'
3130     -  Added new parameters = gravitySign (this used to be contained inside
3131        the factor dRdZ which I added when we first switched to R coordinates).
3132     X GM/Redi is not compatible (yet)
3133     X bottom drag and no-slip need to be debugged.
3134    checkpoint46c_pre
3135    
3136    checkpoint46b_post
3137    o Added new equation of state -> JMD95Z and JMD95P
3138      - EOS of Jackett and McDougall, 1995, JAOT
3139      - moved all EOS parameters into EOS.h
3140      - new routines ini_eos.F, store_pressure.F
3141    o Added UNESCO EOS, but not recommended because it requires
3142      in-situ temperature (see JMD95)
3143    o Modified formatting for knudsen2.f in utils/knudsen2 and added
3144      unesco.f to be used with POLY3
3145    checkpoint46b_pre
3146    
3147    checkpoint46a_post
3148    o Added (atmospheric) pressure loading
3149      - new field in FFIELDS.h, etc...
3150      - new cpp flag ATMOSPHERIC_LOADING
3151    o Changed hFacC to _hFacC in calc_phi_hyd.F
3152    o Added SHORTWAVE_HEATING to some files for consistency
3153    checkpoint46a_pre
3154    
3155    checkpoint46
3156    further merges from release1_p5
3157    o new ctrl package
3158      - adopted from ECCO environment to enable optimization
3159      - added Eliassen Palm fluxes to controls
3160    o added Eliassen Palm flux controls to gradient check package
3161    o cost package
3162      - Compatible with new ctrl package
3163      - added Eliassen Palm cost hooks
3164      - modif's of existing cost functions
3165    o Adjoint-related bug fixes in kpp:
3166      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
3167      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
3168    o autodiff package
3169      - flow directives:
3170        + new for S/R do_the_model_io
3171        + enhanced for S/R checkpoint
3172        + new gmredi.flow
3173      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
3174        disable adcommon.h/g_common.h by default.
3175      - fixed problem for adjoint of global_max
3176    o modified verification/carbon/
3177    o New setup for adjoint of global_ocean
3178    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
3179    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
3180    o incorporated hooks for sponge layer code (external_forcing.F)
3181    
3182    checkpoint45d_post
3183    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
3184    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
3185      (affects plume_on_slope "cg2d" output)
3186    o add new parameter deltaTfreesurf for free-surface time stepping
3187    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
3188    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
3189    o change phiMin in exp1 (to agree with documentation)
3190    o add new flags:
3191     - T,S forcing inside/outside Adams-Bashforth
3192     - turn off temp,salt advection and/or forcing
3193     - for each tracer, define internal flag for multiDimAdvection & A-B
3194    o monitor: change definition of KE to check conservation of Energy
3195    
3196    checkpoint45c_post
3197    o Removed f90 comments ("!")
3198    o Modified initialisations to enable exf package for MITgcm
3199      (without invoking ECCO_PACKAGE).
3200    o modifications to gradient check package (Martin Losch)
3201      - enable centered differences
3202      - modified format of standard output
3203    
3204    checkpoint45b_post
3205    o cleaned exchange calls in cg2d
3206    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
3207    o included CPP option SINGLE_LAYER_MODE in thermodynamics
3208      to configure barotropic setup (Martin Losch)
3209    o moved some initialisations within bi,bj loop in dynamics
3210      (TAF flow dependency)
3211    o in initialise_varia, moved call packages_init_variables
3212      before convective_adjustment_init
3213      (corresponding adjustment of TAF tape initialisation).
3214    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
3215    
3216    checkpoint45a_post
3217    o compute Rho over the whole domain (extend iMin,jMin indices)
3218    o specific exchange for X-slice domain (case Ny=1)
3219    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
3220    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
3221    
3222    checkpoint44h_post = checkpoint45
3223    o Fix to restore differentiability:
3224      place at which packages_init_variables is called in
3225      initialise_varia is crucial for reverse control flow.
3226    o modifications in GMRedi to enable stable adjoint
3227      (corresponding modif's in thermodynamics, dynamics)
3228    o added missing hook for sponge layer code in external_forcing
3229    o modified test cost functions
3230    o storing in gad_advection (plus removal of write(0,*)!
3231    o missing headers TR1.h added in convective_adjustment routines
3232    o errorMessageUnit set non-equal zero in eeboot
3233      (conflict on some platforms, e.g. IBM SP3)
3234    o modified carbon verif.
3235    
3236    checkpoint44h_pre
3237    o vertical grid option: allow to put the Interface at the middle between
3238      2 cell-centers ; replace delZ in pkg/kpp by drF.
3239    o GM Advective form: Tracers are advected using the residual transport (=
3240      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
3241    
3242    checkpoint44g_post
3243    o fix surface correction term in multiDimAdvection (affects plume_on_slope
3244      results) ; ifdef missing in thermodynamics.F
3245    
3246    checkpoint44f_pre,checkpoint44f_post
3247    o added PTRACERS package
3248      This allows an arbitrary number of passive tracers to be integrated
3249      forward simultaneously with the dynamicaly model.
3250      + Implemented so far:
3251        - basic forward algorithm (time-stepping, advection, diffusion, convection)
3252        - I/O and checkpointing
3253        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
3254      + Not implemented so far:
3255        - KPP
3256        - OBCS
3257      + No specific example supplied (yet) but global_ocean.90x40x15 has the
3258        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
3259        line in data.pkg.
3260      + This package is disabled by default since it increases storage.
3261    
3262    
3263    o testscript: added -cleanup option
3264    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
3265                 b) enable to filter 2D fields.
3266    
3267    checkpoint44e_pre,post
3268    o re-wrote convective adjustment to use pre-calculated weights
3269      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
3270      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
3271      Original calls to convect() still in place.
3272    
3273    chkpt44d_pre,post
3274    o added missing EXCLUDE_MONITOR flags
3275    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
3276      (incompatible typ in MIN/MAX expressions caused problems
3277      on IBM SP3)
3278    o in genmake added variable MAKEDEPEND
3279      plus resetting for case SunOS
3280    o added timer_stats.c routine for IBM SP3
3281    o removed variables in dynamics
3282    !!! I forgot to create tag chkpt44d_pre !!!
3283    !!! But chkpt44d_pre = chkpt44c_post    !!!
3284    
3285    o real fresh water flux implemented with non-linear free-surface.
3286    
3287    chkpt44c_pre,post
3288    o few fix (mask in shap_s2, EmPmR in external_field_load,
3289      USE_NATURAL_BCS in solve_for_P);
3290    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
3291    
3292    checkpoint44b_pre/_post
3293    o merge of relevant stuff from the ecco-branch:
3294      - genmake: removed $S64 overwrite for case SunOS
3295      - pkg/exf: update and corrections for field swapping and obcs
3296      - pkg/ecco: parameter lists for the_model_main, the_main_loop
3297                  harmonized between ECCO and MITgcm
3298      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
3299                      updated checkpointing_lev... lists for obcs
3300      - model/src: minor changes in forward_step, plot_field
3301                   added directive for divided adjoint in the_main_loop
3302      - pkg/mdsio: added mdsio_gl_slice
3303    
3304    o check parameters & config (chkpt44a_pre,post)
3305    o OBC and NonLin_FrSurf.
3306    
3307    checkpoint44
3308    o fix bug in mom_vi_del2uv
3309    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
3310    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
3311    o update AIM experiments (NCEP input files)
3312    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
3313    o added some stuff for AD
3314    
3315    checkpoint43
3316    o added two new advection tests
3317    o added global 4x4 degree ocean test
3318    o added test of H&S94 with free surface on cube
3319    o some final mods for gradient check, adjoint,...
3320    
3321    checkpoint42
3322      Fixed AD-related problems:
3323    o Store directives up-to-date with re-arranged Adams-Bashforth
3324      (mainly thermodynamics.F)
3325    o New store directives for multi-dim. advection schemes
3326      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
3327      * new common block and key passkey
3328      (mainly gad_advection.F)
3329    o Modified store directives for split of dynamics/thermodynamics
3330      for the case ALLOW_KPP
3331    o Cleaned argument list for timestep_tracer.F
3332    
3333    checkpoint41
3334    o re-formatted/added comments in prologues of key subroutines
3335      to work with protex
3336    
3337    checkpoint40
3338    o moved calc_gs, calc_gt and calc_tr1 back to model/src
3339    o added FLT (floats) package from Arne along with demo. experiment
3340    o re-arranged Adams-Bashforth scheme for tracers to allow easier
3341      implementation of forward-in-time forcing terms
3342    o more mods for non-linear free-surface including new variable
3343    o modified multi-dim method to work on cube
3344    o bug fix in KPP (from DM)
3345    
3346    checkpoint40pre9
3347    o added DST advection schemes
3348    o fix MPI bug on SGI's
3349    o modifications for non-linear free-surface
3350    o fixed conditionals for fixed flow/passive tracer only mode
3351    o added tension/strain form of stress tensor
3352    o changes to commenting of arguments for TAF/TAMC
3353    o added/updated many matlab scripts
3354    o added multi-dimensional advection method for tracers
3355      
3356    checkpoint40pre8
3357    o new package rw/
3358      Added method for dumping intermediate local arrays:
3359      mdsio_writetile - same as mdsio_writefield except works from inside
3360                        bi,bj loop
3361      mdsio_writelocal - same as mdsio_writetile except works for local
3362                         arrays
3363      write_local_r? - higher-level wrapper for mdsio_writelocal
3364      Controlled by diagFreq. Defaults to zero (ie. no dumps)
3365      Example given at end of mom_vecinv.F that dumps some local arrays.
3366    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
3367      control flux-form versus vector invariant code.
3368      Switch is runtime flag vectorInvariantMomentum (defaults to false)
3369      or genmake -DISABLE ...
3370    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
3371      (additional storing is now needed for case vecinv;
3372      currently nothing implemented to switch this storing off
3373      in case fluxform is used since no CPP flag available).
3374    
3375    checkpoint40pre7
3376    o bug fix in dynamics.F
3377      calc_viscosity called before k=1,Nr loop.
3378    o added some #ifdef's ALLOW_PASSIVE_TRACER
3379    o cleaned initialisations in ctrl_map_ini
3380      related to TAF
3381    
3382    checkpoint40pre6
3383    o split dynamics into thermodynamics & dynamics
3384    o corresponding split of calc_diffusivity into
3385      calc_diffusivity, calc_viscosity
3386      (kpp_calc_diff, kpp_calc_visc).
3387    o Added diffkr, kapgm to control variables
3388    o bug fix in gmredi_slope_limit for ldd97
3389    
3390    checkpoint40pre5
3391    o proper initialization of Adams-Bashforth time stepping
3392      + uses forward step for very first step of model (iter=0)
3393    o re-generated *all* output since almost all output is modified by this
3394      change (sorry but we've been putting this one off for about 2 years)
3395      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
3396        *not* regenerated since they are already out of date and I don't
3397        want to create the impression that they are suddenly working.
3398    o removed KAP stuff for DEC's
3399    o modified/added many .cvsignore files in */code and */input
3400    o added new expt "solid-body.cs-32x32x1"
3401      + this uses an alternative form of ini_curvilinear_grid.F which
3402        is not necessarily any better than the current one...
3403    
3404    checkpoint40pre4
3405    o added re-initialisations of utrans,vtrans,rtrans in
3406      calc_common_factors which are crucial for TAF.
3407    o extended iMin,jMin range for calc_common_factors,
3408      calc_diffusivity
3409    o added option ALLOW_PASSIVE_TRACER
3410    o a few minor updates and fixes
3411    
3412    checkpoint40pre3
3413    o created calc_gtr1.F for gad package
3414    o split the_main_loop and re-introduced forward_step
3415    o some recomputations of nIter0 for TAMC
3416    
3417    checkpoint40pre2
3418    o Updated to latest branch of AJA, JMC
3419    o Added gradient check package
3420    o Added routines for passive tracer handling
3421    o Added carbon sequestration sensitivity experiment
3422    
3423    checkpoint39
3424     o Modifications and fixes to support TAMC
3425       (mainly missing or wrong directives)
3426     o Corrected common blocks when fooling TAMC to produce adjoint I/O
3427       in addummy_in_stepping
3428     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
3429     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
3430     o Included following packages:
3431       cal: calendar
3432       exf: external forcing
3433       ecco: essential routines to control use of cal, exf
3434             (NB: this is not the full ECCO environment)
3435     o disabled some packages by default in genmake
3436    
3437    checkpoint38
3438     o see notes_c37_adj.txt
3439     o corrected wrong layer index in external_forcing_t
3440     o replaced the_main_loop/forward_step by the_main_loop
3441     o removed forceoutput from write_state
3442       (replaced criteria for initial/final state)
3443     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
3444    
3445    checkpoint37
3446     o mdsio.F routine split and packaged in pkg/mdsio
3447       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
3448        used unless genmake -disable=mdsio)
3449     o allow a more precise surface-geopotential gradient for the atmosphere
3450       taking into account the change in space of Alpha (=1/rho) at the surface.
3451     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
3452       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
3453     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
3454       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
3455       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
3456     o Time-Average diagnostics defined as a pseudo package "timeave".
3457     o pickup files : old pickup (before c35) did not work with new code (c35
3458       and after) unless activating 2 commented lines in initialise-varia.
3459     o Non-Hydrostatic pickup file Pb fixed.
3460     o bug with Rigid-lid version (since c35) fixed.  
3461    
3462    checkpoint36
3463     o implement Crank-Nickelson barotropic time-stepping
3464     o recover Time-Average diagnostics
3465     o fix Pb in checkpoint (PR#19)
3466     o AIM become a standard package ; clean unused CPP_kees
3467    
3468    checkpoint35
3469     o subtantial rewrite of dynamics.f
3470     o allows staggered time-stepping
3471     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
3472     o added bottom drag (linear + quadratic)
3473    
3474    checkpoint34
3475     o Modified exchange routines for correct reverse simulation.
3476     o Added verification output to comply with bug fix in impldiff.F
3477       as of c33 (exp2, natl_box).
3478     o Corrected store directives in dynamics.F
3479     o Corrected array boundaries in impldiff.F
3480     o Corrected array dimensions in gmredi.
3481       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
3482     o Added routine GLOBAL_SUM_INT to global_sum.F
3483     o Added mdsio_gl.F for ECCO purposes.
3484    
3485    checkpoint33
3486     o Fixed bug in lower BC in impldiff.F
3487     o Fixed confusion about units of forcing arrays in FFIELDS.h
3488       namely Fu,Fv,Qnet,Qsw,EmPmR:
3489       - Removed verification/natl_box/code/external_fields_scale.F
3490         (did not differ from that in model/src)
3491       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
3492         (see FFIELDS.h for description)
3493       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
3494         kpp_calc.F and kpp_transport_t.F
3495       - Removed model/src/external_fields_scale.F and calls to it
3496       - verification/natl_box uses flux data with "atmospheric" sign so
3497         a special version of external_fields_load.F is used to
3498         change the data as it's read in. This way, the arrays
3499         have the right units and signs at all times tha a user could
3500         possibly use them.
3501     o Corrected genmake to delete a temporary file during configuration
3502    
3503    checkpoint32
3504     o Scaling of forcing fields moved from external_forcing.F to
3505       external_fields_scale.F, called directly after loading fields.
3506     o Surface relaxation terms added to surface tendency fields in
3507       extra subroutine.
3508     o impldiff.F changed to avoid storing by TAMC of huge intermediate
3509       fields.
3510     o Changes in GMRedi to comply with packaging structure.
3511     o Modifications and bug fixes in KPP package.
3512     o Verification experiment for KPP added (verification/nat_box/)
3513    
3514    checkpoint31
3515     o Packages interface brought in line with defined standard
3516       -> new routines packages_...F
3517       -> changes in initialise_fixed.F, initialise_varia.F
3518       -> enables initialisation interface for ECCO package
3519     o Rescaling of external forcing fields immediately after read
3520       (removed from external_forcing.F)
3521       -> new: surface_fields_scale.F
3522       -> affects ini_foorcing.F, external_fields_load.F
3523     o Computation of surface tendencies before tendency updates.
3524       -> new: external_forcing_surf.F
3525     o Change of variable names useGMRedi, useKPP, useECCO
3526     o Further changes in dynamics.F, impldiff.F for TAMC
3527     o Tested for experiments 0, 2, 4.
3528       - not yet tested for GMRedi.
3529       - not yet tested for KPP.
3530    
3531    checkpoint30
3532     o Updates for OBCs
3533     o New experiment for test OBCs (internal_wave)
3534     o New output.txt in verification/exp4/results/
3535     o Updates for KPP: calculation of viscosity corrected, new variables
3536       kpp_dumpFreq and kpp_taveFreq
3537     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
3538       and entry for T90 in genmake
3539    
3540    checkpoint29
3541     o packaged KPP and GM/Redi
3542    
3543    checkpoint28
3544     o Corrected initialization of hFacMin for difference vertical coordinates
3545     o Modified calculation of partial cell thickness to more robust algorithm
3546     o config_summary.F: replaced write_1D_... by write_0D_...
3547       read_write.F: added subroutines write_0D_...
3548     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
3549       included some initialisations required for TAMC.
3550     o routine calc_isoslopes: modified sqrt computation to make it
3551       differentiable for zero argument.
3552     o routines dynamics, impldiff:
3553       included store directives and tape key computations required for TAMC.
3554     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
3555    
3556    checkpoint27
3557     o fixed calc_isoslopes() to so that cancellation of terms in tensor
3558       formulation works properly with variable resolution.
3559     o restructured the calling tree between the_model_main() and dynamics()
3560     o split initialise() into initialise_fixed() and initialise_varia()
3561     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
3562       in new routine ini_psurf()
3563    
3564    checkpoint26
3565     o moved some #ifdef in optional routines to encompass everything
3566       except the argument declarations. This was using up some memory.
3567     o fixed macros like _ADT to work with both versions of Linux cpp
3568     o cleaned up some unused and uninitialized variables
3569       (helps when debugging with strict compile options)
3570     o split up CPP_EEOPTIONS.h into options and macros
3571       (macros are now in eesupp/inc/CPP_EEMACROS.h)
3572     o patch for 2 processor JAM mode
3573    
3574    checkpoint25
3575     o updates for OBCs and NH
3576     o dramatically reduced memory usage
3577     o added "JAM" routines for use on Artic network
3578     o parameterization of convection by implicit vertical diffusion
3579     o added a diagnostic of convective index
3580     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
3581       (this is was partly for OBCs and NH but also in anticipation of
3582        an explicit free-surface option)
3583     o initial state input files for U and V
3584    
3585    checkpoint24
3586     o Removed some spurious "REAL"s
3587     o Updated KPP to latest version from JPL
3588     o Added a COS(latitude) in horizontal viscosity
3589    
3590    checkpoint23
3591     o Added del^4 diffusion for salt and temperature
3592     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
3593    
3594    checkpoint22
3595     o Made many small changes: implicit none, format(i5), etc...
3596     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
3597    
3598    checkpoint21
3599     o Introduced new I/O package that supports direct-access records (mdsio.F)
3600     o Split-up mid-level I/O routines
3601     o Updated input data for experiments 0,1,2,4 and 5
3602     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
3603    
3604    checkpoint20
3605     o Tidied up open-boundaries some more
3606     o Added non-hydrostatic code
3607     o Fixed some input data
3608     o Modified MPI start-up to work in "coupled" context.
3609    
3610    checkpoint19
3611     o Tidied up directory structure for verification experiments.
3612     o Added new code for open boundaries.
3613     o Corrected advective terms near boundaries.
3614     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
3615     o Implemented free-slip/no-slip BCs and del^4 dissipation.
3616     o Split default parameters out of ini_parms.F into set_defaults.F.
3617    
3618    checkpoint18
3619     o Further changes for optional code generation with
3620       CPP - ugh!
3621    
3622  checkpoint17  checkpoint17
3623   o Beginning to incorporating modularity   o Beginning to incorporating modularity
3624     for supporting atmos. and ocean configs.     for supporting atmos. and ocean configs.

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