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revision 1.28 by adcroft, Wed Jun 21 20:11:54 2000 UTC revision 1.826 by mlosch, Fri Jun 1 12:57:48 2007 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/obcs:
8     - bug fix for balance code
9    o pkg/seaice:
10      - allow values of SEAICE_elasticParm > 1
11      - add new parameter SEAICE_evpTauRelax as an alternative
12        to SEAICE_elasticParm
13      - make lsr boundary conditions free slip (by default), changes result
14      - add code for no slip boundary conditions for lsr
15      - set minimum of zeta to zero (and not 4e8) (changes results)
16      - add a cap on AREA after advecting AREA if seaice_growth is not called
17    o change calculation of Visbeck K:
18      - no longer depend on tapering scheme; instead, compute slope (limited
19        by GM_maxSlope). this is equivalent to what was comuted before with
20        clipping or linear tappering.
21      - fix vertical averaging (wrong by 1 level)
22      - leave the old version (but will not be maintained) within
23        #ifdef OLD_VISBECK_CALC / #endif
24    o change error catch in calc_r_star to improve vectorization
25    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
26      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
27    
28    checkpoint59b
29    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
30      - export/import (between ocean & coupler) fields needed for ocean DIC.
31    o pkg/seaice:
32      - get rid of three more exchanges seaice_calc_viscosities (required
33        different loop boundaries in seaice_lsr and seaice_ocean_stress)
34      - bug fix in seaice_ocean_stress (update of lab_sea required)
35      - reduce loop boundaries to necessary minimum also in seaice_evp
36      - go back to the old way of computing deltaC/Z as the adjoint likes that
37        better
38    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
39      passive tracer to an Age Tracer) + update output.txt
40    o pkg/exf:
41      - implement A-grid / C-grid selection for wind-stress input files.
42      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
43      for now, in exf_bulk_largeyeager04.F only :
44      - change implementation for case where windspeed + 2. components wind-stress
45        are read-in. AND use rhoConstFresh to convert evap.
46    o pkg/seaice:
47      - use correct EXCH_UV for wind-forcing (on A-grid).
48      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
49        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
50    o pkg/exf:
51      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
52      EXF_INTERPOLATION:
53      - merge global_with_exf/code version of exf_interp_read.F
54        to the main code ;
55      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
56        reading the file ; Important: This options needs to be defined to recover
57        previous code.
58        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
59      - no longer loose real*8 precision along the way when using exf_iprec=64.
60    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
61      - change discretisation of evp-solver in order to avoid another exchange
62        (changes lab_sea) and clean up a little
63      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
64        help the adjoint (this also changes the results slightly)
65      - add a few "_d 0" where they had been missing in seaice_evp.F
66      - cleaning up: remove unused seaice_calc_rhs.F
67    o pkg/exf: some cleaning-up:
68      - change various "constants" into runtime parameters
69      - cleaned-up Large&Yeager04 routine which should eventually
70        replace exf_bulkformulae.F (changed names of S/R and CPP)
71        and merged various ALLOW_ATM_WIND options
72     only used with thsice pkg (in thsice_get_exf.F):
73      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
74        which are used when useStabilityFct_overIce=TRUE (= the default)
75      - change default values of ice & snow emissivity and scale downward LW
76        by ice & snow emissivity.
77    o pkg/thsice:
78     fix few little problems, in thsice_calc_thickn.F:
79      - growth vertically (and not laterally) if iceFrac == iceMaskMax
80      - melt laterally only if hIce < hThinIce (as the comments say)
81      and in thsice_extend.F:
82      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
83      - start to form ice as soon as the minimum ice-volume is reachable.
84     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
85      and cpl_aim+ocn
86    o pkg/kpp
87     - move computation of surface related input fields to KPP into a new
88       subroutine kpp_forcing_surf.F
89     - remove wrong (within bi,bj loops) EXCH calls.
90     - little cleaning (add argument myThid in last position, cvs header ...)
91     - for now, fix conservation problem by exchanging KPPviscAz (may not
92       be the best fix)
93    o pkg/seaice
94     - check for inconsistent evp parameter/cpp-flag combination
95     - remove leftover errIO flat for obsolete name list error handling
96    o OpenAD
97     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
98    
99    checkpoint59a
100    o pkg/seaice: some parameter clarifications and a little bit of clean up
101    o pkg/thsice: rename run-time parameters:
102       himin       -> hIceMin
103       himin0      -> hThinIce
104       hihig       -> hThickIce
105       i0          -> i0swFrac
106       transCoef   -> bMeltCoef
107       frac_energy -> fracMelting
108      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
109       with default values (for now) that do not change the results.
110      remove old version of thsice vars advection in pkg/seaice.
111    o in FFIELDS.h:
112      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
113      - make pLoad & sIceLoad always available (but still only used if
114         ATMOSPHERIC_LOADING is #define).
115    o pkg/kpp: replaced _KPP_RL with _RL
116    o bug fixes for vertical diffusivity computations when both KPP and
117        3D diffusivity arrays are used.
118    o pkg/seaice: fix bug in evp solver, while doing that
119      - change (improve?) discretization of stress computations for both
120        cgrid-lsr and evp solver
121      - add a new routine to compute strain rates
122      - the above changes lab_sea results
123      - add no slip conditions for evp solver (off by default), lsr-version
124        may follow
125      - fix exchange for shear at Z-points (does not change lab_sea)
126      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
127        (to force the user to pick a time step since there is not "safe" way
128        of choosing it)
129      - add principal stress diagnostics
130      - rearrange fields for evp a little to avoid having to call a: too many
131        exchanges and b: exchanges for stress trensor components which we do
132        not have.
133      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
134        of evp, complete rewrite for lsr case (latter is does not yet work
135        in all cases)
136    o pkg/kpp: add code to have mixing in shelf ice caverns
137      - add myThid to all kpp routines (long overdue)
138    
139    checkpoint59
140    o pkg/exf:
141      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
142        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
143      - move exf header files from lower_case.h to UPPER_CASE.h ;
144        add missing cvs Header & Name
145      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
146      - add namelist param. selectStressGridPosition, exf_monFreq
147      - retire many _CLIM routines, and remove data.exf_clim
148        + params moved to data.exf
149        + climsst, climsss now handled by exf_set_gen, i.e.
150          climss?period=0 refers to constant field,
151          climss?period=-12 to monthly forcing
152      - split up namelists in data.exf
153    o pkg/seaice:
154      - remove seaice_exch and seaice_exch_uv
155      - remove superfluous exchange of theta
156      - add myThid to seaice_budget_ocean/ice
157      - add new interface for atmospheric wind forcing (C-grid only)
158        + new routine
159        + two new field (taux, tauy for stress over ice)
160        + removed one global field (DAIRN) for C-grid case only
161    o pkg/thsise
162      - 2nd set of modifs for thsice adjoint in conjunction with exf
163    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
164    
165    checkpoint58y_post
166    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
167      vertical diffusivity, similar to that in MOM4; turned on using
168      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
169      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
170    o Added capability for 3D specification of background vertical diffusion
171      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
172      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
173      "data" file that contains the 3D vertical diffusivity coefficients.
174    o ice dynamics (pkg/seaice) with thsice thermodynamics:
175      - add code within pkg thsice to advect & diffuse sea-ice fields
176      similar to (and will replace) what has been added in  seaice_advdiff.F,
177      but: - conserving Mass, Heat & Salt.
178           - better when using non-linear advection scheme (not yet fully tested)
179           - can also be used in atmospheric set-up (for now, only the diffusion).
180    
181    checkpoint58x_post
182    o IO option for global-file compact format:
183      - add options when generating topology (utils/exch2/matlab-topology-generator)
184      - add I/O capability (pkg/mdsio).
185      - adapt utils/matlab/rdmds.m to read this format.
186      for now long-line format not yet supported by pkg/mdsio (& exch2).
187    o shelfice: add a few diagnostics
188    
189    checkpoint58w_post
190    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
191      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
192      (and replace horiVertRatio in NH code).
193      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
194                         and tutorial_plume_on_slope (sensitive to truncation)
195    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
196      directly to drive seaice model (C-grid only)
197    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
198     - reintroduce computation of wind from stress,
199     - compute tau (in exf_bulkformulae.F) from windstress averaged to
200       mass points to avoid tau = 0
201     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
202    o rdmnc.m: make it work with "global" files created with gluemnc
203    o rdmnc.m : some improvements in dealing with singleton dimension
204      (tested on all testreport mnc output files).
205    o genmake2: disable pkg/profiles if netcdf test fails.
206    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
207    o move call to cal_readparms up to make calendar parameters/variable available
208      to all packages
209    
210    checkpoint58v_post
211    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
212      useDynP_inEos_Zc tested.
213    o pkg/exf: changes to properly interpolate/mask/scale initial fields
214    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
215      and portions thereof.  See read_cs.txt for description and examples.
216    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
217      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
218      following the great-circle arc between those 2 points.
219    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
220      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
221    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
222     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
223     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
224     - still needs work (not working with some options ; efficiency to improve)
225       and serious testing.
226     - use this scheme for temperature & salinity in 2 advection test exp.:
227       advect_xy & advect_xz, respectively.
228    
229    checkpoint58u_post
230    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
231    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
232    o testreport: add option "-skipdir" to skip some test.
233    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
234      momentum calculation.
235    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
236    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
237      remove checkpoint.F and the_correction_step.F (no longer used);
238      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
239    o add option (linFSConserveTr) to correct for tracer source/sink due to
240      Linear Free surface
241    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
242    o pkg/thsice: fix reading mnc-pickups
243    
244    checkpoint58t_post
245    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
246    o pkg/mdsio:
247     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
248       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
249       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
250     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
251     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
252       either MDS_READ_FIELD or MDS_WRITE_FIELD )
253     - new S/R (to replace MDSWRITEMETA), which allows to write more
254       informations (variable names, time ...) to meta files.
255     - modify rdmds.m to give back the meta file content.
256    o pkg/diagnostics: change vertical interpolation to be safer, and more
257       flexible (define p-levels to interpolate to in data.diagnostics);
258      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
259       diagnostic pointer.
260    o pkg/seaice: more cleaning up of seaice_growth, added many comments
261    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
262    o fix multi-category seaice:
263     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
264       SEAICE_MULTICATEGORY
265     - fix short wave heat flux
266    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
267       and allow to use EVP solver. Change forward lab_sea: test both EVP
268       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
269    o Initial check-in of lab_sea adjoint
270      (very similar to natl_box_adjoint/code_seaice)
271      * used C-grid and EVP solver
272      * used KPP, GM/Redi
273      * uses inAdExact=.TRUE.
274      * gradient checks fail for both ADM and TLM
275        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
276        f.d. gradients actually seem more problematic than ADM, TLM gradients;
277        issue is related to forward mismatch between g77 an ifort
278    o pkg/seaice: overhaul of thermodynamics
279     - growth.F and groatb.F are replaced by new routine seaice_growth.F
280     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
281     - move a few global fields out of SEAICE.h into seaice_growth.F and
282       make them 2D (FICE/QNETO/ ...)
283     - remove FO (it is the same as QNETO)
284     - introduce a few local fields to avoid modifying external fields such
285       as atemp, etc.
286    
287    checkpoint58s_post
288    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
289      changed exf_set_gen.F so that
290        genperiod=0 means input file is one time-constant field and
291        genperiod=-12 means input file contains 12 monthly means
292    o CG2D: use pre-computed solver main-diagonal (stored in common block);
293      this affects truncation error ; generate new output file for exp. which
294      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
295        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
296        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
297        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
298        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
299        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
300    o start implementation of deep-atmosphere and anelastic formulation
301    o verification: remove 2nd copy of input files and use script "prepare_run"
302      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
303    o mom_common/vecinv/fluxform: fix a few initialisation isssues
304    o profiles: fix for multithreaded case
305    
306    o diagnostics: rename few diags:
307      s/'PRESSURE'/'RCENTER '/g
308      s/'TICE    '/'oceFreez'/g
309      s/'TAUX    '/'oceTAUX '/g
310      s/'TAUY    '/'oceTAUY '/g
311      s/'SWFLUX  '/'oceQsw  '/g
312      s/DIFx/DFxE/g
313      s/DIFy/DFyE/g
314      and add few ocean-forcing diagnostics:
315      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
316    o modifications to pkg/seaice/growth.F and budget.F, which change results of
317      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
318      as actual snow thickness.  It now refers everywhere to effective snow
319      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
320    
321    checkpoint58r_post
322    o modifications to pkg/seaice/growth.F, which change results of
323      lab_sea experiment: fixes pertain to melting snow over open water, to
324      masking EVAP under sea ice, and to using the correct AREA variable for
325      computations of EVAP, PRECIP, HSNOW, and GHEFF
326    o add ability to read bathy, salt, and theta using MNC (off by def)
327    o add flooding algorithm and advection of HSNOW for pkg/seaice;
328      both are turned off by default and do no change any results
329    o seaice advection with pkg/thsice: a step toward the use of non-linear
330      advection scheme, but #ifdef or commented out for now (requires more EXCH).
331    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
332      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
333      in natl_box (affects results @ truncation level: update output.txt)
334    o multi-threading and IO:
335      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
336      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
337        (needed to work with SingleCpuIO): tested in all verif. exp.
338    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
339      affects the results (but none of the verification test uses this scheme).
340    o Adding some pkg/diagnostics capability to pkg/seaice
341      (will certainly be subject to changes)
342    o ctrl: adding new control variables:
343      lwflux, lwdown, evap, snowprecip, apressure, runoff
344    
345    checkpoint58q_post
346    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
347      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
348      high_res_cube configuration by 4% on Columbia.
349    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
350      add (in global_with_exf/code) a version of EXF_INTERP_READ without
351      dynamical allocation (seems to work in multi-threaded).
352    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
353      single CPU io) so that TAF does not have to see EESUPPORT.h
354    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
355    
356    checkpoint58p_post
357    o obcs: stop if obcs is used with useCDscheme = .true.
358    o shelfice:
359     - fix a sign error so that no slip at shelfice interface works
360     - remove stop for combination non-hydrostatic code and shelfice. That does
361       not mean, that the results are correct, but at least they are numerically
362       stable
363    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
364    o added adjoint exch routined for all exch*3d* routines
365      and updated flow directives
366    
367    checkpoint58o_post
368    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
369      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
370    o change controling S/R for writing pickup file (new S/R do_write_pickup)
371      and clean-up reading/writing of pickup files.
372    o fix local version of read/write pickup (NH part) in rotating_tank/code
373    o simplify EXCH interface:
374     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
375     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
376    o added the regrid package
377    o shelfice:
378     - add a simple boundary layer scheme to reduce noise
379     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
380    
381    checkpoint58n_post
382    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
383       local variable (not in common block).
384    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
385      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
386      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
387        to work with SingleCpuIO.
388    o add "_d 0" to real constant of pkg/cfc subroutines ;
389       update exp. cfc_exemple & tutorial_cfc_offline output files.
390    o multi-threading and IO:
391      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
392        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
393      - barrier before and after reading.
394      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
395      - avoid using MDS_WRITELOCAL for LAND pkg output.
396      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
397        common-block variables ; Allows multi-threading with master-thread IO.
398    o change default MAX_NO_THREADS from 32 to 4 ;
399      and stop cleanly when MAX_NO_THREADS is too small.
400    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
401    
402    checkpoint58m_post
403    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
404       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
405    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
406       keep global_ocean.90x40x15 (for AD testing) with former secondary test
407       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
408    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
409        add MITgcm_tutorials (= code + all the tutorials)
410    o ecco, option to compute cost for total ssh (mean+anom)
411    o consistent with addition of ptracer and ssh in pkg/profiles
412    o profiles: adding ptracer and ssh
413    o testreport: change multi-test output-file name
414      (from output.txt.{name} to output.{name}.txt)
415    o profiles: now ok for mutli-tiles case
416    o seaice: add 4 parameters for different advection schemes for area,
417      (effective) seaice thickness, enthalphy, and snow height. Their default
418      is the standard parameter SEAICEadvScheme
419    o calc_gw:
420     - add cosFacU in zonal viscous flux (harmonic.visc.).
421     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
422       of tutorial_plume_on_slope.
423    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
424    o calc_gw: true flux-form, account for horizontal grid spacing.
425      update rotating_tank results, but not plume_on_slope (affected at
426      truncation level, 11 digits).
427    
428    checkpoint58l_post
429    o calc_gw:
430     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
431     - remove side-drag for now (need to fix it); update plume_on_slope results.
432     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
433    o commit code to make SST/SSS weights spatially variable
434      (based on either variable in-situ or variable initial T/S weights)
435    o pkg/ecco:
436      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
437        now based on horizontally varying weights wthetaLev, wsaltLev
438      * cost_averagesflags now returns year indices in addition to day, month
439      * sflux balance is performed on annual basis
440        (sflxumm, sfluxmm2, bal_sfluxmm)
441      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
442        including separate counting and multipliers
443    o pkg/rbcs
444      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
445    
446    checkpoint58k_post
447    o testreport:
448     - always build in dir. "build" (if not there, mkdir build instead of building
449       & running in input)
450     - run in dir run (if it exists), in build otherwise.
451     - call prepare_run (if input/prepare_run exists)
452     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
453    o pkg/exf modifications to interpolation and rotation routines for more
454       reasonable treatment of North Pole singularity: for tracers North Pole
455       value is set to northernmost zonal-mean value, for zonal velocity it is
456       set to zero, and for meridional velocity it is set to northernmost value.
457    o pkg/exf/exf_check_range.F
458     - add tile index to diagnostics and move stop statement to the very
459       end of the routine.
460    o pkg/diagnostics: (diagnostics_main_init.F)
461      define title of isomorphic variables according to the current config.
462    o pkg/thsice with pkg/seaice dynamics:
463    - fix domain of computation (interior only, required for exf) and do exchanges
464    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
465    o towards a standard way of dealing with multi-threading in MONITOR
466      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
467    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
468       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
469    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
470    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
471    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
472       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
473    o tracer advection:
474     - clean-up and simplify calc_common_factors.F
475     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
476       advection subroutine (but still not used within DST advection S/R)
477    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
478    
479    checkpoint58j_post
480    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
481      from file (collects calls previously in FORWARD_STEP)
482    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
483    o adjoint store dir. adjusted accordingly
484    o genmake2
485      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
486    
487    checkpoint58i_post
488    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
489      on wind stress (SEAICEstressFactor defaults to 1.)
490    o Total number of Timers is finite (<=40): comment out 2 non-essential one
491      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
492    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
493      on CS-grid: no longer loosing mass.
494    o exf & curvilinear-grid: no longer modify longitude xC & xG.
495    o pkg/ggl90: fix sloppy output and fix a bug
496    o pkg/seaice: added SEAICEuseEVPpickup parameter
497      - Set to false in order to start EVP solver with
498        non-EVP pickup files when using SEAICEuseEVP
499      - fix sign error in diffusion in seaice_calc_rhs
500    
501    checkpoint58h_post
502    * Modifications for bottom topography control
503      o replace hFacC by _hFacC at various places
504      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
505      o add non-self-adjoint cg2d_nsa
506      o update autodiff support routines
507      o re-initialise hfac after ctrl_depth_ini
508      o works for 5x5 box, doesnt work for global_ocean.90x40x15
509    * Adding verification for 5x5 box (4-layer) bottom topography control
510    
511    checkpoint58g_post
512    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
513       used for mean seasonal cycle, mean diurnal cycle); add an example
514       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
515    o pkg/ggl90:
516      - add parameter (minimum surface kinetic energy)
517      - fix bug (avoiding division by zero)
518    o couple pkg/thsice to pkg/seaice:
519      - modify advection in seaice to accomodate new scalar fields to be advected
520      - only muliDimAdection scheme work with seaice/thsice
521      - mapping of thsice-variables to seaice-variables, back and forth
522      - does not break the verification experiments, but does not give the
523        desired results either
524    o pkg/seaice
525      - make (default) second order advection a bit less confusing?
526    
527    checkpoint58f_post
528    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
529      to pkg/seaice):
530      - new routines thsice_map_exf and thsice_get_exf provide the interface
531      - add an additional formal parameter to thsice_solve4temp
532    o pkg/exf:
533      - add new fields wspeed, snowprecip (to be able to couple to thsice)
534      - correct Stefan-Boltzmann constant
535      - new parameter for longwave surface emittance
536      - separate some stuff from exf_bulkformulae into new routines  
537        exf_radiation, exf_wind
538      - add new parameters and constants: longwave emissivity for ocean, ice
539        and snow, evaporation parameters over ice
540      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
541        either wind from stress or stress from wind
542    o pkg/thSIce:
543    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
544    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
545       and THSICE_CALC_THICKN
546    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
547    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
548      to make debugging easier.
549    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
550    o pkg/bulk_force:
551      - clean-up comments and parameters ;
552      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
553    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
554      generate new output for test-experiment: aim.5l_cs.thSI
555    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
556      testreport accordingly
557    
558    checkpoint58e_post
559    o SEAICE_CGRID adjoint done
560    o R_STAR adjoint implemented.
561      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
562      * need to sort out init. of h0facc, etc.
563    o Make pkg/profile fully independent of ecco,cost, etc. stuff
564      to be able to use it in pure forward.
565    
566    checkpoint58d_post
567    o upgrade simple test-experiment to tutorial example:
568     step.1: duplicate the experiment and (step.2) will remove the old copy.
569      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
570      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
571      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
572      tutorial_global_oce_biogeo    <- copy of dic_example
573      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
574      tutorial_plume_on_slope       <- copy of plume_on_slope
575      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
576      tutorial_global_oce_optim     <- empty for now (David ?)
577      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
578     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
579    o correct a sign problem in cost_scat.F
580    o obcs and ptracers: fix boundary conditions for advections schemes
581      with larger stencil
582    o thsice adjoint: start
583    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
584      completeness
585    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
586      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
587    o ptracers adjoint:
588      * avoid extensive recomputatations
589      * fix missing re-init. of gptr (missed by TAF)
590    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
591      me to turn off the excessive output to STDOUT that this package produces
592    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
593      and add those terms in Vector-Invariant formulation.
594    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
595      if the control period (xx_hfluxperiod etc) is 0
596    o in profiles pkg, clean routines and fix details
597    o in ecco pkg, reading ssh data:
598      fix problem in case the model does not start at iter0=0
599    o fix mnc-pickup/restart for ptracers
600    o new package prifiles:
601      code to compute profile-based cost by Gael Forget
602      (modifs in ecco, ctrl, autodiff)
603    o Benign bug fix in initialization (spotted by M. Mazloff) of
604      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
605    
606    checkpoint58c_post
607    o adjoint: finish NLFS adjoint and provide reference output in
608      verification/global_ocean.90x40x15/results_ad_nlfs
609    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
610      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
611      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
612      with SEAICE_CGRID defined.
613    o move calendarDumps from "data" to "data.cal" and clean-up the code
614      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
615    o add useEXF & useCAL flags (for now, set in hard-coded way)
616    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
617      (were missing in NH mode, and wrong in quasihydrostatic mode).
618      waiting for Chris updated version of calc_gw to add those CALLs.
619    o fix bug in quasihydrostatic S/R ;
620      add a test for this option: global_ocean.90x40x15.qshyd
621    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
622      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
623    o add on/off flag useOffLine for package OFFLINE
624    o seaice:
625      - modify advection so that it works also on the C-grid
626      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
627        problem in multi-tile runs with C-grid
628      - add flags for clipping ice velocities and/or masking solver forcing
629      - fix drag (ocean on ice) formulation and a bug that caused noise in the
630        C-grid solver
631      - added a few comments to seaice_diffusion.F
632      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
633        are now exclusive)
634      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
635        required re-ordering the code a little:
636       + make DAIRN global variable (defined in SEAICE)
637       + move computation of the viscosities eta and zeta into a new separate
638         routine (because I need to recompute them in seaice_ocean_stress.F)
639    
640    checkpoint58b_post
641    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
642      update output.txt of exp. aim.5l_cs.thSI
643    o various mnc cleanups and improvements:
644      + shrink lookup tables by factor of ~4
645      + better error reporting when running out of lookup space
646      + able to handle longer path/file names (up to 500 chars)
647    o adjoint:
648      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
649      - TBD: "hidden" mom_vecinv recomp. in dynamics
650    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
651     (allow to differentiate between forcing components using new integer flags:
652      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
653     and add new flag to put Dissipation tendency out of Adams-Bashforth.
654    o ecco
655      - enable trend removal from SSH anomaly obs.
656    o adjoint
657      - a fix for PmEpR when #undef EXACT_CONSERV
658      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
659      - try to fix "hidden" recomp. in forward_step for NLFS
660        (NLFS seems broken sometimes after I checked it in)
661    o seaice:
662     - add c-grid version of the dynamic solver:
663       + three new routines that are the c-grid substitute lsr, dynsolver
664         and ostres
665       + put a few fields that were local to dynsolver into global common
666         blocks, so that I can move the computation of stresses etc into
667         seaice_lsr (saves coding but may break the adjoint).
668     - replace more hardwired parameters by runtime parameters
669     - add ice masks that mask the rhs of the implicit solvers where there
670       is no ice (commented out in seaice_dynsolver, because i am not sure
671       if this works properly), eventually this should replace the clipping
672       of ice velocities in seaice_dynsolver to +/-40cm/s.
673    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
674      include it only where its needed
675    o move balancing of fluxes before the call of external_forcing_surf
676    o seaice:
677      - correct units of turning angles (now they are really in degrees)
678      - move computation of GWATX/Y out of main routine into dynsolver
679      - initialize GWATX/Y in seaice_init
680    o Apply mask on Fresh-Water flux (needed for SSH forcing).
681      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
682    o seaice: add runtime flags for turning angles (default to zero)
683    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
684      and trend from exf forcing and ctrl control adjustments
685    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
686      (since checkpoint57x_post)
687    o change the default rotation period to 86164.s = the Earth rotation
688    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
689      and based on a reference stratification. Tested within hs94.cs-32x32x5.
690    o seaice advection: add code for choosing between the default (2nd order
691      central differences) and multiDim advection schemes provided by
692      pkg/generic_advdiff
693    o seaice:
694      - removed all references to SEAICE_GRID.h fields from
695        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
696        (cubed-sphere configuration will change a little)
697      - grid computations in seaice_init are obsolete now.
698      - cleaned up code a little so that is easier to read (hopefully).
699      - added new (better?) discretizations of default advection and diffusion
700        (turn on with SEAICEuseFluxForm)
701      - replace 1 in 3d global fields by kSurface in growth.F
702      
703    checkpoint58a_post
704    o seaice:
705      - bug fix in advect.F
706    o shelfice:
707      - separate shelfice load anomaly from pload (breaks with time
708        dependent forcing), => introduce constant field shelficeLoadAnomaly.
709        Its default is 0., but it may be computed more cleverly from (unknown)
710        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
711        done offline. A good approximation of the pressure load anomaly is
712        necessary to avoid large initial adjustment processes underneath
713        deep-reaching shelfice.
714      - small fix in ISOMIP shelfice_thermodynamics
715      - add more sophisticated thermodynamics of Hellmer (1989), this is
716        now the default
717      - give a few constants more intuitive names
718    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
719      if bulk formulae are used in long integration (especially EmPmR). Turn
720      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
721      if balancePrintMean, the imbalance that is substracted is printed to
722      STDOUT.
723    o fix bug (typo) in obcs_apply_eta.F
724    o add a new package shelfice which enables us to model the circulation
725      underneath shelf-ice with draughts of hundreds of meters.
726     - works
727     - to do: + include improved thermodynamics
728              + check whether kSurfC (from model/inc/SURFACE.h) can be used
729                instead of new field kTopC
730              + can we use topoFile, Ro_surf and existing code in ini_depth.F
731                instead of new field R_shelfIce and new code in ini_depth.F
732                and ini_mask_etc.F?
733              + adjust vertical mixing schemes?
734    o seaice pkg:
735     - add a cpp-flag to include a simple formula for a salinity dependent
736       freezing point of sea water at the surface
737     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
738       meridional stresses are now different (and hopefully correct)
739    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
740       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
741       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
742    o pkg/diagnostics: add options and parameters for regional-statistics
743       diagnostics ; define regions by reading a region-mask from a file
744       (might add other options later)
745    o pkg/bulk_force:
746     - add option and parameters to use AIM surface-flux formulae.
747     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
748       others forcing fields (defined in PARM05, parameter file "data") are loaded
749       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
750     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
751     - use the right EXCH call for uwind,vwind (to work on CS-grid).
752     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
753       and parameters (note: calcWindStress replaces .NOT.readwindstress).
754     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
755    
756    checkpoint58
757    o add "--embed-source" option to genmake2 which, when the supporting
758      tools can be compiled (as determined by genmake2) will turn on the
759      embed_files package which then embeds the entire MITgcm source code
760      (*.[fFhc] + Makefile) used for the build within the executable
761      - requested by CNH but off by default
762      - adds a paltry <9MB to the mitgcmuv executable in most cases
763      - only writes the output when useEMBEDSRC in eedata is true
764    o clean up 3-dim. relaxation codes:
765      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
766      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
767      * Thanks to Tom Haine for testing!
768    
769    checkpoint57z_post
770    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
771      affects output (@ truncation level) of exp. plume_on_slope ; updated.
772    o fix the pickup behavior for obcs in combination with ptracers
773    o fix a bug in ptracers_external_fields_load
774    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
775      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
776    o transfered surface NH pressure to eta field (if exactConserv).
777    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
778         and update lab_sea output.txt file.
779    o completing 3-dim. relaxation code: additional term
780         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
781      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
782      * At compile time, in "EXF_OPTIONS.h" set
783          #define  ALLOW_CLIMTEMP_RELAXATION
784          #define  ALLOW_CLIMSALT_RELAXATION
785      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
786          tauThetaClimRelax3Dim = 15552000.0,
787          tauSaltClimRelax3Dim  = 15552000.0,
788      * 3 cases:
789          1) Use a constant-in-time 3-dim. field
790          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
791          3) Real-time relax. to time-evolving prescribed field
792    o Adding Laplacian-type smoothness constraint on
793      initial and boundary (forcing) controls (ic, bc)
794      * enable at compile-time via
795        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
796      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
797      * Absolute scale somewhat unclear so far
798      * no area weighting was included since no other cost term does so far
799    
800    checkpoint57y_post
801    First step for a NLFS adjoint
802    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
803    o new init. routines for calc_r_star, calc_surf_dr
804    o still need to deal with ini_masks_etc
805    o testreport seemed happy
806    checkpoint57y_pre
807    
808    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
809    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
810    o add new offset feature to offline pkg (plus minor cleanup)
811    o cfc fixes for final year of integration
812    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
813      be in GCHEM_OPTIONS).
814    
815    checkpoint57x_post
816    o fix testreport Pb in multiple test experiment.
817    o cleanup our namelist syntax in verification:
818      - make it more F95 standards compliant (some work still needed)
819      - allows the vast majority of our tests to work with gfortran
820    o Non-Hydrostatic:
821     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
822     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
823    o Allow to apply AB on T,S rather than on AB(gT,gS):
824     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
825     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
826       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
827     - need a "clever" read_pickup to restart from the other AB formulation
828    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
829    o remove some unused variables (reduces number of compiler warnings)
830    o adjoint
831      * Disable useVariableViscosity for adjoint for time being
832        (there are a number of extensive recomputations)
833      * Initialize certain variables needed for adjoint
834    
835    checkpoint57w_post
836    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
837                 fix the singleCpuIO RS version of MDSWRITEFIELD
838       and add a WARNING if using globalFiles=T with multi-processors.
839    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
840      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
841    o tracer advection scheme:
842      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
843       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
844       was not very convenient).
845      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
846       (further tests needed for the implicit DST & Flux-Limiter schemes).
847    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
848      and sRef for convenience, handy, when you want to initialize
849      ptracers in a large domain with a constant non-zero value. Also,
850      untangle ptracers_init.F a little.
851    
852    checkpoint57v_post
853    o change dome exp. to use variable viscosity in side-drag terms.
854    o remove all the files from the cfc_offline test since they are now
855      incorporated into tutorial_cfc_offline which has been producing
856      identical results for a few days of testing
857    o add new parameter: sideDragFactor to enable half-slip-side BC
858      and change side-drag S/R to use viscosity from mom_calc_visc
859      (can switch back by setting sideDragFactor=0.); affects results at
860      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
861       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
862    o vorticity & strain are now computed without masking, to account for
863      no-slip-side BC in variable viscosity calculation ; mask is applied
864      anyway later on, before computing advection/coriolis terms.
865    o modify exp4 to test new obcs support for reading from external files
866      and for passive tracers
867    o fix behavior of ptracers_monitor when monitor output is written to a
868      netcdf-file; still not independent of monitor.F (writes in the same
869      file).
870    o change default value of tRef (put a uniform, meaningful value for ocean
871      & atmos) and initialize sRef (was missing, as Martin mentioned).
872    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
873      to be proportional to enstrophy dissipation length.  Thus,
874       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
875      This is now consistent with Smagorinsky and with the manual.
876    
877    checkpoint57u_post
878    o OBCS and PTRACERS: add open boundary support for passive tracers
879      - either use homogenous (pseudo) v.Neumann conditions or prescribe
880        OB-values from file; this is not different from the way theta and salinity
881        are treated
882      - however, Orlanski-radiation conditions are not supported, and the model
883        will stop if you use pTracers and Orlanski at the same time.
884      - beefed up the rountine obcs_external_fields_load: now only those open
885        boundary values are overwritten with values from files for which there
886        are really files, otherwise the OB-fields remain untouched. This makes
887        it possible to use different OBs at different ends of the domain (as
888        with EXF)
889    o reduce number of exch calls in shap_filt (s2).
890    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
891      truncation level) 4/5 MLAdjust test results (11&12 digits match).
892    
893    checkpoint57t_post
894    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
895    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
896      same truncation, independent of the face number: affects affects several
897      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
898    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
899      note that biharmonic viscosity + no-slip was not tested in any experiment.
900    o fix bug in non-linear free-surf side-drag ; generate new output for
901      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
902    o make mnc honor the writeBinaryPrec flag for most kinds of output
903    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
904    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
905      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
906    o add brackets in multi-terms sum to get same truncation, independent of
907      the face number (manage to get exactly same value of gU,gV at the cs-edge)
908      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
909    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
910      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
911      a maximum grid-scale Reynolds number.  Also, changes all length calculations
912      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
913      Suggested values of viscosity parameters found in mom_calc_visc.
914      Many new viscosity diagnostics available.
915    
916    checkpoint57s_post
917    o Add clearing-house for viscosity calculations, mom_calc_visc and
918      correct numerous bugs in LeithD and Smagorinsky discretizations.  
919      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
920      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
921      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
922      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
923      The Strain-Tension form is now called with useStrainTensonVisc=.true.
924      ViscAhStrain and viscAhTension are now retired.
925    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
926    o In response to JMC's bug report, genmake2 now ignores any soft-links
927      that it finds in the *current* directory when searching for files.
928      Soft-links found in any other source directories will still work as
929      they did before.
930    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
931      a C routine to unlimit the stack size
932    o mnc-ify pkg/aim snapshot vars
933    o mnc-ify pkg/land as requested by Daniel
934    o various changes to mnc including:
935      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
936      - output can now be grouped so that all files within a group
937          change the ITER portion of their names in lock-step together
938      - can now read ("global") PER-FACE (in addition to PER-TILE) files
939          and works with both EXCH1 and EXCH2 (but needs more testing)
940      - writing works for all verification test cases w/ g77 on Linux
941    
942    checkpoint57r_post
943    o make MNC variable initialization happen earlier
944    o add diagnostics for (almost) each term of the momentum Eq.
945    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
946    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
947    o remove MINIMAL_TAVE_OUTPUT option ;
948      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
949    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
950      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
951    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
952    o add time-dependent SST, SSS control
953    o cost terms in ecco/ modularized (new cost_generic.F)
954    o cost_averages routines are modularized (new cost_averagesgeneric.F)
955    o new infrastructure for seaice model vs. obs misfits in seaice/
956      * driver from the_main_loop.F is seaice_cost_driver.F
957      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
958      * gradient check in Exp. 6a of natl_box_adjoint/
959    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
960      (see README file)
961    
962    checkpoint57q_post
963    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
964    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
965      - bug was reported by Jean-Michel and Ian Fenty
966    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
967      update exp. cpl_aim+ocn output.
968    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
969      Needed for high-res. runs with large global files
970      to be able to limit tapelev size
971    o Changed some tests for adjoint:
972      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
973      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
974      * global_ocean.90x40x15/ back to default 3-level checkpointing
975    o Modifications to enable scripted COMMON to MODULE conversion
976      * verification/OpenAD/code/ has necessary scripts and description;
977      * converts, compiles and runs successfully;
978    
979    checkpoint57p_post
980    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
981    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
982      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
983    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
984    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
985      (was already the case for dissipation with mom_vecinv,
986       and also the case for grad.PhiHyd when staggered-timeStep)
987      This will allow to put dissipation out-off the AB time-stepping.
988     Unfortunately, affects truncation error. Update output of exp. that "fails"
989      (cg2d matching number) and leave the others for later: front_relax(10),
990      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
991      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
992    
993    checkpoint57o_post
994    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
995      (2) its ready to be documented during the 20050801 DocFest
996    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
997      for ideal_2D_oce and lab_sea on linux_ia32_g77
998    o set to #undef CTRL_SET_OLD_MAXCVARS_30
999      in global1x1_tot/code_seaice_adj to access indices 32, 33
1000      (worth another tag)
1001    
1002    checkpoint57n_post
1003    o adding precip control xx_precip 32
1004    o adding swflux control xx_swflux 33
1005    o Replacing 10 forcing penalty cost routines by 1 generic.
1006    o Implementing partitioning in time-mean and variable adjustment
1007      for atmos. state.
1008    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1009    o in natl_box_adjoint:
1010      * updated exp 1 to 10
1011        (but does not have time-mean vs. variable split results yet)
1012    o updated global1x1/*_seaice_adj/
1013      to incorporate latest changes
1014    o enable useSingleCpuIO for mdsio vector routines
1015      (applies in particular to tapelev I/O)
1016    o removed inefficient K-loop in all active_file*control*.F
1017    
1018    checkpoint57m_post
1019    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1020      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1021    o pkg/exch2: filling of face-corner halo regions is optional
1022      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1023    
1024    checkpoint57l_post
1025     tag before updating tutorials (pre-release-2)
1026    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1027       for output and interpolation of input fields onto model grid)
1028    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1029       Affects results of exp. rotating_tank ; update output.txt.
1030    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1031          and taking the square quantity and/or using a fraction-weight field.
1032    o fix aim_diagnostics_init.F mate numbers.
1033    o add mnc output capability to diagnostics/diagstat and update
1034      our cvsignore files for the ACSII output generated
1035    
1036    checkpoint57k_post
1037    o lab_sea now uses diagnostics package and provides a suite of
1038      new EXF diagnostics output.
1039    
1040    checkpoint57j_post
1041    o exf
1042      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1043        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1044        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1045      * extended diagnostics output
1046        - now includes all EXF variables
1047        - hs, hl moved to common block
1048        - separate S/R for diagnostics, called after ctrl vector is added
1049        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1050        - EXFqnet contains true Qnet (i.e. includes qsw)
1051      * updated verif. lab_sea, global_with_exf
1052      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1053        to ensure that diagnostics sees a true EXFqnet
1054    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1055    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1056      several times with different frequencies.
1057    o mnc-ify the thsice package as requested by Daniel Enderton
1058      - the monitor--MNC output needs work
1059      - many attributes need to be added (most are currently blank)
1060    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1061      - many attributes need to be added (most are currently blank)
1062    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1063    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1064    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1065      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1066         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1067    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1068     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1069    
1070    checkpoint57i_post
1071    o Diagnostics package was changed: diagnostic allocation is now deactivated
1072      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1073    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1074      add 1rst Order upwind vertical Shear.
1075    o add a quick fix for A/B checkpointing in OFFLINE mode
1076    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1077      end-run around the C/Fortran linking horror in eesup/src/timers.F
1078    o added pkg/runclock: allows user to terminate run based on wall clock
1079    o added non-hydrostatic scaling parameter: nh_am2
1080    o pkg/my82: futile attempt to make results compiler-independent by adding
1081      some "_d 0", etc. no effect.
1082    o for mnc output, fill the 'T' coordinate var with myTime and create a
1083      separate 'iter' variable for iteration count
1084    o pkg/diagnostics:
1085      add new capability: output of Global/Regional & per-level statistics ;
1086      tested against monitor output (including land & thSIce) on various exp.
1087    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1088    
1089    checkpoint57h_done
1090      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1091      data.diagnostics, data.gchem, data.ptracers) is done.
1092    
1093    o pkg/diagnostics: prepare for Global/Regional statistics.
1094      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1095    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1096      and rename it: DIFFERENT_MULTIPLE
1097    
1098    checkpoint57h_post
1099    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1100    o pkg/diagnostics: change output frequency, now in seconds (instead
1101      of Nb of iterations). This requires to change data.diagnostics.
1102    checkpoint57h_pre
1103    
1104    o in mnc, let the user create the output dir if both mnc_outdir_date
1105      and mnc_outdir_num are false
1106    o add fflags() to pkg/diagnostics which allows one to specify, on a
1107      per-file basis, the file precision [default behavior is unchanged]
1108    o added diagnostics to pkg/kpp, including computation of mixed layer
1109      depth based on a temperature/density criterion
1110    o updated verification/natl_box to test the new pkg/kpp diagnostics
1111    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1112    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1113    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1114      not mnc -- this mistake was found by JMC and is now corrected
1115    
1116    checkpoint57g_post
1117    o add Adams-Bashforth 3rd Order time stepping:
1118      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1119      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1120    checkpoint57g_pre
1121    
1122    o make lambda[Theta,Salt]ClimRelax spatially varying
1123      (default remains spatially uniform constant based on tau)
1124    o added new control variables
1125      * init. uVel, vVel, etanN
1126      * lambda[Theta,Salt]ClimRelax
1127    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1128      (suggested by G. Forget)
1129    
1130    checkpoint57f_post
1131    o add parameter "baseTime" = model base time = time at iteration zero
1132      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1133      account for baseTime shift
1134    o move Coriolis arrays from PARAMS.h to GRID.h
1135    checkpoint57f_pre
1136    
1137    o mnc-ifying the seaice package
1138    o introduced an alternative length scale calculation for use in the limiting
1139      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1140    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1141    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1142      as well as grad(vort3).  Made it compatible with both approximate form
1143      for the cubed sphere and full form of these gradients.  Added flag
1144      useFullLeith to select between approximate and full form.  
1145    o add "d0" in getcon.F to reduce differences between compilers/platforms
1146      update output.txt of exp. fizhi-gridalt-hs
1147    o change port_rand funtion to allow to set the seed.
1148    o fix obscure MNC bug involving conversion between reals and integers
1149      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1150        new version is now more standards-compliant
1151    o adjoint-related modifications
1152      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1153      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1154      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1155    
1156    checkpoint57e_post
1157    o Adding eddy stress controls a la Ferreira et al.
1158    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1159    
1160    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1161      update output.txt of exp. fizhi-gridalt-hs
1162    o add more "Z" dimensions and associated coordinate vars to MNC
1163    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1164    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1165      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1166      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1167      months and years.  Requires pkg/cal.
1168    o diagnostics: add pickup functionality
1169      - off by default for backwards compatibility
1170      - current version only uses MDSIO -- MNC will be added
1171    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1172    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1173    
1174    checkpoint57d_post
1175    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1176    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1177      output from the diagnostics package
1178    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1179    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1180      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1181    o add coordinate variables to the MNC output from the diagnostics package
1182    o change MNC-flags default value: true when useMNC=TRUE
1183    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1184      the ability (off by default) to read the grid information using MNC
1185    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1186    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1187    o do snap-shot diagnostics at the middle of the time-interval (instead of
1188      at the end).
1189    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1190      new test for AIM with thSIce + slab-ocean
1191    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1192    o move state variable diagnostics to the beginning of the time step ;
1193      (note: still needs some work specially for snap-shot diagnostics)
1194      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1195    
1196    checkpoint57c_post
1197    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1198    o generate new output.txt files on faulks with g77 & the new -ieee option
1199    checkpoint57c_pre
1200    
1201    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1202      update output.txt of exp. global_ocean.90x40x15
1203    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1204      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1205    o add saltFlux(+File) forcing capability with periodicExternalForcing
1206    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1207    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1208    o improvements for the MNC output from DIAGNOSTICS:
1209      - correct handling of the unlimitied dimension
1210      - all dims now have associated coordinate variables
1211      - variables located at U, V, and Corner ("Z") points are now written
1212        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1213        *all* data points are output
1214    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1215    o added pkg/seaice/seaice_monitor.F
1216    o mdsio_readfield.F can now read files visible only to master MPI process.
1217    o pkg/seaice: some test code for ice-modified ocean stress
1218    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1219      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1220      spurious negative numbers for precipitation and humidity.  Will cause
1221      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1222    o pkg/ctrl/
1223      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1224        May be enabled via doPackDiag
1225      *  introduce z-scaling of
1226         + gradient (doZscalePack) and
1227         + control (doZscaleUnpack)
1228    o pkg/mdsio/
1229      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1230      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1231    
1232    checkpoint57b_post
1233    o simplify options in diagnostics_fill arguments (remove weird combinations)
1234    o fix MNC coordinate variables so that they now contain per-face index
1235      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1236      general, EXCH2 grids are only aligned to a "local" coordinate system
1237    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1238    o Implement instantaneous output within pkg diagnostics:
1239      setting a negative frequency in data.diagnostics produces
1240     "snap-shot" output (as opposed to time-average if freq > 0)
1241    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1242      NOTE: change ptracer diagnostics name: use 2 characters to work with
1243            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1244    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1245      becomes the coordinate variable for the 'T' dimension
1246    o add CF-style coordinate variables to MNC
1247      - just a first cut:  numbers are meaningless on the cubesphere and
1248        missing along the T axis but otherwise it works!
1249    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1250    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1251    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1252      this is based directly on what the model compute, so that the content of
1253      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1254    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1255    o clean up build options files for SunOS, in particular
1256      - remove -traditional from xmakedepend
1257      - change -xarch=v9 to -xarch=native for f77
1258      - restore use of make (not gmake)
1259      - add CC=gcc if using g77
1260    o changes per discussion of AM, JMC, & EH3 today:
1261      - move redundant "grid" variables out of "state" -- in preparation of
1262        creating proper CF-style coordinate variables and in recognition
1263        that any/all grid variables can be easily copied (eg. w/NCO) from
1264        the grid files into any of the other NetCDF files
1265      - *always* output grid variables with MDSIO (this will eventually be
1266        changed)
1267      - output MNC grid file if useMNC is true
1268    o every instance of _END_MASTER() has been found and replaced with
1269      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1270      preprocessors
1271    o re-arrange diagnostics pkg initialisation:
1272     - allow each package to extend the available diagnostics list
1273     - add some checking and fix small problems (multi-threaded, ...)
1274     - new S/R diagnostics_fill (replace fill_diagnostics):
1275       look through the short list of active diag. (instead of the long list)
1276       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1277    
1278    checkpoint57a_post
1279    o this set of changes restores TAMC compatibility
1280      tested for global_ocean.90x40x15 adjoint on trough
1281      (what a pain)
1282    
1283    checkpoint57a_pre
1284    o some modifs in tools/build_options for sunos
1285    o call ctrl_pack for ctrl at end for optimcycle=0
1286    
1287    checkpoint57
1288    o add horizontal bi-harmonic viscosity for vertical velocity
1289      - new parameter viscA4W (defaults to viscA4)
1290      - affects only non-hydrostatic code
1291      - to be done: no-slip lateral boundary conditions
1292    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1293    o implement Implicit Vertical advection for pTracers
1294    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1295      (implemented also for implicit vertical diffusion & advection)
1296    o OBCS: extend application of tracer open boundary conditions
1297      to a strip beyond the boundary of width Olx/Oly
1298    o add call monitor to TAF set of required calls (flow directives)
1299      and include in natl_box_adjoint
1300    o untangle a few ifdefs related to cost, ctrl, autodiff
1301      untangel a few ALLOW_ECCO_OPTIMIZATION
1302    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1303      (theta2, salt2 in ecco_cost_weights)
1304    
1305    checkpoint56c_post
1306    o OBCS as control variables
1307      - update ctrl_ad_diff.list, obcs_ad_diff.list
1308      - remove balance of obcs controls from default
1309      - fix index bug nobcs in ctrl_init
1310      - fix dummy fields filen in ctrl_pack
1311      - add dummy weights for obcs
1312    o lsopt: comment out fort.94 output
1313    o optim:
1314      - remove unnecessary header files
1315      - adjusted namelists
1316      - add xerbla.F to Makefile
1317    o exf:
1318      - multiple modifications of exf_check_range
1319      - unit change in exf_init_runoff from [m/year] to [m/s]
1320    o mdsio:
1321      - i/o-vector change debugLevel from debLevA to debLevB
1322    
1323    checkpoint56b_post
1324    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1325      is called from DO_THE_MODEL_IO
1326      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1327      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1328      - clean up PTRACERS_WRITE_TIMEAVE a little
1329    o add another verification experiment that tests both the cfc-pkg and
1330      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1331      reactive tendencies treated inline with regular timestepping
1332    o testreport previously did a lousy job of comparing small numbers, so
1333      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1334      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1335      testreport.
1336    o ptracers_monitor: bug fix for MPI
1337    
1338    checkpoint56a_post
1339    o GCHEM: finish reorganizating the package
1340      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1341        (introduces another 3D-array for each passive tracer, but only if
1342        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1343        gchemTendency is not needed because the timestep is done separately)
1344      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1345      - GCHEM is now---more or less cleanly---separate from PTRACERS
1346      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1347        so clear to me how that should be done in a general way.
1348    o CFC: improve formatting of output in CFC_ATMOS
1349    o PTRACERS:
1350      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1351        that ALL experiments with ptracers enable can be checked. This makes
1352        GCHEM_MONITOR obsolete.
1353      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1354        monitorFreq
1355      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1356    o add PTRACERS (PTR0[1-5]) to testreport output
1357    o exf_check_range:
1358      * default changed to .TRUE.
1359      * will check values for niter0 if debLevA, every timestep if debLevB
1360      * STOP in exf_check_range if 'out of range'
1361      * range chosen generous to allow for potential extema
1362      TBD: a version with stricter range
1363           permitted range would be runtime parameters
1364    o GMredi:
1365      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1366      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1367      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1368    o GCHEM:
1369      - move call to GCHEM_FORCING_SEP, so that it is now called before
1370        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1371      - introduced a useGCHEM runtime flag and applied it everywhere.
1372      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1373        this flag is now only visible within GCHEM-pkg routines.
1374      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1375        be replaced by a 3D array that is computed before thermodynamics; for
1376        this, the tracer ID iTracer had to be included into the parameter list
1377        of ptracers_forcing
1378      - set up forward_step to call gchem_forcing, that will replace
1379        gchem_forcing_int in ptracers_forcing
1380      - cleaning up
1381    o small cleaning of exch2: remove files that are also in eesupp/src
1382    
1383    checkpoint56
1384    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1385    o mnc: cleanup "full" files--fixes out-of-memory problem
1386    o ECCO-GODAE
1387      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1388      * fully merged and updated from SIO code
1389        windstress sign change affects
1390        - exf_inscal_[u/v]stress
1391        - sign of xx_tau[u/v] adjustments
1392        - signs in cost_scat
1393      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1394      * natl_box_adjoint updated and compressed
1395      * 2-level checkpoint switch added
1396        (tested in EXP. 1 of natl_box_adjoint)
1397      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1398    o SVD
1399      * first complete, non-hacked version for SVD calculations
1400      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1401        performed via direct access files admtlm_vector.it????
1402        (via ctrl_[un]pack)
1403      * optimcycle is used for ARPACK iteration counter
1404        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1405      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1406        and add linear transforms where necessary
1407      * controls are initial/final SST, SSS (can be extended; need to check
1408        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1409    o mdsio: filename info to both stderr, stdout
1410    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1411      from sign change
1412    
1413    checkpoint55j_post
1414    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1415      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1416    o add consistent build directories and .cvsignore files to verification
1417    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1418    o make all subroutines 30 or less characters in length for certain older
1419      compilers to work (a thorough search only turns up two routines in
1420      pkg/ptracers)
1421    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1422      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1423    
1424    checkpoint55i_post
1425    o change arrays for total vertical diffusivity (2.D if explicit,
1426      3.D if implicit) ; each ptracer uses its own background value.
1427    o added mnc/NetCDF output capability to ocn_compon_interf
1428      - added bits to verification/cpl_aim+ocn so that it can run on
1429        ITRDA and other clusters without the mpirun "-wd" option
1430    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1431      configuration
1432    o give MNC the ability to create additional files rather than
1433      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1434      - the default is just less than 2GB which is a practical limit
1435        on many systems
1436    o Compute the non-local term using either KPP vertical diffusivity (=default)
1437       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1438    
1439    checkpoint55h_post
1440    o add verification test "vermix"
1441    o remove all the *_ioinc flags and replace with the single global
1442      outputTypesInclusive flag
1443    o allow to set a vertical profile of vertical diffusivity for T & S
1444    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1445    o useMNC moved from data.mnc to data.pkg
1446    
1447    checkpoint55g_post
1448    o Renaming carbon AD experiments to comply with testreport conventions
1449    o Updating adjoint of Held-Suarez hs94.1x64x5
1450    o Fixing directives for non-ECCO forward_step, after ECCO directives
1451      have been fixed to avoid recomp. of do_oceanic_phys
1452      Works well for global_ocean.90x40x15,
1453      but recomp. issue remains for carbon
1454    o Updating adjoint output for natl_box_adjoint after
1455      pkg/ecco has been modified (see taga c55d_post)
1456    
1457    checkpoint55f_post
1458    o rename to timeave_init_fixed
1459    
1460    checkpoint55e_post
1461    o some delicate re-shuffle of store directives to avoid one
1462      extra call of do_oceanic_physics
1463      affects ecco_the_main_loop.F, do_oceanic_physics.F
1464      checkpoint_lev1_directives.h
1465    o NB: this may break global_ocean adjoint temporarily,
1466      but it is clear how to fix it. Will do later, need this now.
1467    
1468    checkpoint55d_post
1469    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1470    o ecco_cost_weights is modified to 1x1 runs
1471    o modifs to allow observations to be read in as
1472      single file or yearly files
1473    o enable to read exf forcing fields as either
1474      single file or yearly files (flag useExfYearlyFields)
1475    checkpoint55d_pre
1476    
1477    o switch between 2-level and 3-level checkpointing
1478    o add ability of MNC to write local and "partial" (eg. 2D slices where
1479      the full 3D field is never actually stored) arrays to NetCDF files
1480      with the correct (that is, the complete multi-dimensional) set of
1481      array indicies
1482      - used in mom_vecinv() to write the diagFreq output
1483      - tested (demonstrated) in verification/aim.5l_cs
1484    o further mnc-ification
1485      - add verification/lab_sea to the list with mnc setups
1486      - fix undefined mnc v-names in cd_code
1487      - add kpp to mnc output (both snapshot and timeave)
1488    o non-hydrostatic code
1489      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1490        in calc_gw.F
1491      - defaults to viscAh
1492      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1493        friction or Leith) in non-hydrostatic mode, as long as there is
1494        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1495    o pkg/cost
1496      extend simple cost functions to treat time mean quantities
1497      (T,U,V) via cost_accumulate_state from cost_tile
1498    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1499        be 2 times larger than the minimum size the advection scheme requires.
1500        now get a perfect conservation of salt in advect_cs test-exp (updated)
1501    o GGL90 (Gaspar's TKE mixed layer)
1502      - add horizontal diffusion of TKE, requires exchanges in
1503        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1504        default. In OPA there is no horizontal diffusion of TKE but the
1505        mixing coefficients are computed from a horizontal average of TKE of
1506        6 points or so. I think that diffusion has a little more physical
1507        justification.
1508      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1509        was in vain)
1510      - mask tke-variable in ggl90_init
1511    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1512    o fix biharmonic diffusion on CS-grid.
1513    o more obcs stuff
1514      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1515        for reading boundary values. This routine is called from
1516        obcs_prescribe_read
1517      - updated obcs_check
1518      - changed sponge layer relaxation parameter units for days to seconds
1519      - turned off sponge layer by default
1520      - changed argument list of OBCS_CALC to myTime+deltaTclock
1521      - fixed about 35 bugs in obcs_external_fields_load
1522    
1523    checkpoint55c_post
1524    o obcs stuff
1525      - new runtime flags useOBCSprescribe, useOBCSbalance
1526      - re-arranged obcs_calc
1527      - moved exf_getobcs to obcs_prescibe_read
1528        obcs_prescibe_read is called after ORLANSKI stuff
1529        and independent of it (executable can contain all).
1530      - updated obcs_check
1531      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1532        These may be necessary only if tangential velocities are
1533        prescribed at OB, not sure, needs testing.
1534    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1535      which simplifies the calls and passes the ifc check-bounds test
1536    
1537    checkpoint55b_post
1538    o add a 2D scalar, Z location, exchange_2 routine.
1539    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1540      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1541      affects advect_cs results (for the wrong reason): update output.txt
1542    o use a more standard discretization for biharmonic viscosity ;
1543     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1544      affects results of dome set-up: update output.txt
1545    o fix gad_advection.F (CubedSphere part), back to version 1.23
1546    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1547    
1548    checkpoint55a_post
1549    o merged code to
1550      * prescribe/read time-dependent open boundaries
1551        (works in conjunction with exf, cal)
1552      * sponge layer code for open boundaries
1553      * each boundary N/S/E/W now has its own CPP option
1554        (healthy for the adjoint)
1555    
1556    checkpoint55
1557    o up-to-date adjoint of previous breaks
1558      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1559      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1560      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1561      - carbon: * remove tr1-related adjoint verification
1562                * add ptracer as control variable
1563    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1564      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1565    
1566    checkpoint54f_post
1567    o in verification/carbin/ remove experiment related to
1568      ALLOW_PASSIVE_TRACER (array tr1 etc)
1569      code_ad/ input_ad/ results_ad
1570    
1571    o add two new packages
1572      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1573        + subject to optimization (memory)
1574      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1575        + subject to reordering (many GOTOs in the original code)
1576        + so far opps is called for every (i,j) point, and then operates in
1577          the vertical; one may want to reorder the scheme in order operate in
1578          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1579          fields)
1580    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1581      - all verification tests compile and run with linux_ia32_g77
1582      - defaults are compatible with current input files--nothing
1583        should change if you were not previously using MNC
1584      - MNC output has been added in numerous places (eg. timeave)
1585        but there are still a few writes not yet do-able with MNC
1586        (this is in progress)
1587      - flags now allow for either/or/both use of MDSIO and MNC and
1588        documentation will soon follow
1589      - numerous small formatting cleanups for ProTeX
1590    o add version info (via BUILD_INFO.h) to MNC and stdout
1591    
1592    checkpoint54e_post
1593    o add two new packages
1594      - pp81 (Packanowski and Philander, 1981), Richardson number and
1595        stratification dependent mixing
1596      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1597      - these scheme operate in a similar manner as KPP (without ghat, of
1598        course), however there is only one diffusivity that is used for both
1599        temperature and salinity (and passive tracers)ç
1600    o add offline package
1601    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1602      provided by Stephanie Dutkiewicz
1603    o genmake2: add ability to search for C compilers and cleanup test output
1604      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1605    
1606    checkpoint54d_post
1607    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1608    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1609      leading to additional shift by 5 days each year of integration
1610       (i.e. leading to considerable offset over the years)
1611    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1612    o start with no AB and no initial filtering (staggerTimeStep):
1613      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1614    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1615      (external loading & cpl import/export stay in forward_step.F)
1616    o update coupling interface to work with new staggerTimeStep
1617    o change MDSIO ptracers_pickup.
1618    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1619    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1620    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1621    
1622    checkpoint54c_post
1623    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1624      this affects (truncation error) output.txt of test-exp:
1625       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1626    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1627    o change Qnet to always be the net heat flux, (+upward).
1628      affects (truncation error) output of natl_box exp.: updated
1629    o define the max number of passive tracers in PTRACERS_SIZE.h
1630    o start to test mnc routinely in exp0
1631    o add sea-ice loading (sIceLoad) as a new forcing field.
1632    
1633    checkpoint54b_post
1634    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1635       impressive on Altix and Opteron systems)
1636    o diagnostics can now write NetCDF files through the mnc package
1637    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1638    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1639    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1640      affects (truncation error) output of lab_sea & natl_box exp.: updated
1641    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1642    
1643    checkpoint54a_post
1644    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1645    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1646    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1647    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1648      + internal_wave (shift in writing cg2d_ini_res)
1649    checkpoint54a_pre
1650    
1651    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1652      - modified verification/lab_sea and natl_box_adjoint accordingly
1653    
1654    checkpoint54
1655    checkpoint53g_post
1656    o prepare splitting of thermodynamics: store convect.counter in common block
1657    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1658      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1659    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1660    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1661    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1662    o restore adjointability
1663    
1664    checkpoint53f_post
1665    o modifications that affect AIM experiment results (update output.txt):
1666      - no advection of S at top interface Nr (pkg/generic_advdiff)
1667      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1668    o AIM pkg:
1669      - include stability function into surf.Flux derivative relative to Tsurf
1670      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1671    
1672    checkpoint53e_post
1673    o merged cylindrical coord configuration
1674    o added rotating_tank experiment
1675    checkpoint53e_pre
1676    
1677    checkpoint53d_post
1678    o faulks upgraded: re-generate output.txt that have changed:
1679       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1680    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1681    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1682    o added Sadourny discretization of Coriolis
1683      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1684      - re-enabled use of omega3 (useAbsVorticity)
1685    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1686      vector-invariant equations
1687      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1688    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1689      hopefully without new bugs
1690      - still to do: biharmonic friction for non-hydrostatic w
1691    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1692    o regenerated output for global_ocean_ebm (using -ieee)
1693    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1694      of mom_common/
1695      - simple re-arrangement of instructions within computing loop
1696    checkpoint53d_pre
1697    
1698    checkpoint53c_post
1699    o new version of coupler for AIM+thSIce and Ocean models
1700     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1701     - land: change Evaporation of snow
1702     - aim with thSIce: fix bug in snow-precip.
1703    o changes to calc_gw.F
1704     - bug fix for w^2 term near the bottom boundary
1705     - (hopefully) improve the lateral slip boundary condtions for use with
1706        partial/looped cells
1707      - because the bug fix changes two verification experiments anyway (exp5
1708        and plume on slope), change the lateral boundary condition from half slip
1709        to the value of no_slip_sides
1710    o ebm package wasnt quite up to the parallel task. Fixed that.
1711    o Adjoint of EBM package + verification
1712      * TLM OK
1713      * ADM not sufficient accuracy yet (needs further testing)
1714    
1715    checkpoint53b_post
1716    o Commiting new energy balance model to repository
1717      * package is pkg/ebm
1718      * verif. is verification/global_ocean_ebm
1719      * references are in ebm_driver.F
1720    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1721    C        Global thermohaline circulation. Part I:
1722    C        Sensitivity to atmospheric moisture transport.
1723    C        J. Climate 12(1), 71-82
1724    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1725    C        Global thermohaline circulation. Part II:
1726    C        Sensitivity with interactive transport.
1727    C        J. Climate 12(1), 83-91
1728    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1729    C        Destabilization of the thermohaline circulation
1730    C        by atmospheric eddy transports.
1731    C        J. Climate 7(12), 1870-1882
1732    o Will need long integration testing.
1733    checkpoint53b_pre
1734    
1735    o created pkg/mom_common in preparation for variable viscosity code
1736    o renamed and split ini_mnc_io
1737    o pkg/land: only liquid water can diffuse or run-off
1738    o AIM using land: soil wetness availability account for snow
1739    o added printMapIncludesZeros to EEPARMS namelist
1740    
1741    checkpoint53a_post
1742    o restore TAMC compatiility for exf_constants.h
1743      (no usage of _d in .h)
1744    o Additional storing in KPP in an attempt to fix
1745      TAMC problem with adjoint of KPP code.
1746      (no success...)
1747      Identical code works fine with TAF.
1748    o Fixed verification/natl_box_adjoint experiments.
1749      Initial conditions for Experiments 4 and 5 are now
1750      set to "SEAICE_initialHEFF=0", which is more reasonable,
1751      and hence gives results closer to that of Experiment 2.
1752      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1753    
1754    checkpoint53
1755    o stable checkpoint with up to date adjoint
1756      TLM tests only run for 1st grdchk at the moment. Its unclear if
1757      this is a code problem or a problem with resetting code for g_
1758      variables that is being autogenerated wrong.
1759      Otherwise:
1760       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1761       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1762         are both still in chaos following their security messes.
1763    
1764    checkpoint52n_post
1765    o various build (mostly genmake2) changes including:
1766      - ability to build/run more easily within Cygwin and MacOS X
1767      - more complicated Makefiles with a stronger dependence on Gnu Make
1768    o pkg/seaice modifications
1769      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1770        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1771        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1772      - changed proxy for geostrophic velocity and updated
1773        verification/lab_sea/results/* accordingly
1774      - removed ADI dynamic solver from pkg/seaice
1775      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1776        they caused a segmentation fault under certain circumstances
1777      - removed unused field WATR
1778    o bug fix in exf-package:
1779      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1780         now reflect that.
1781    o small fixes in the cal-package:
1782      - set reference date to first of January for the 'model'-calendar
1783      - failing of cal_CheckDate in cal_FullDate now actually results in a
1784        warning
1785    o small modifications in exf-package to increase flexibility:
1786      - change climtempfreeze from a constant to a runtime parameter that
1787        is specified in data.exf_clim (default = -1.9)
1788      - introduce runtime parameter windstressmax (default = 2.0) that is
1789        specified in data.exf
1790    o fix in pkg/thsice:
1791      - update Evap (Tsf changes) to be consistent with Latent heat flux
1792      - maintain snow precipitation unchanged (even if Tsf >=0).
1793     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1794    
1795    checkpoint52m_post
1796    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1797      this does not change any of the results, because myIter=0 in swfrac always
1798      lead to jwtype=2 (the default anyway), but the call makes little sense
1799      as a default
1800    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1801    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1802      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1803    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1804    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1805    o extending useSingleCpuIO option to work with new exch2 I/O format
1806      - old-style, missing-tile I/O is still accessible by defining CPP
1807        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1808    o monitor package can write to NetCDF files and/or STDOUT
1809    o fix re-definition bug in MNC_GRID_INIT_ALL()
1810    o doc/api_reference added
1811      - a framework for building an API Reference Manual using all
1812        the "protex" comments embedded in the code
1813      - see pkg/generic_advdiff, pkg/mnc for examples
1814    o MNC:
1815      - make myThid the last argument for all subroutines
1816      - new default for the grid files: NO halos
1817      - add useMNC and other run-time flags
1818      - separate per-file-group handling of the unlimited dimension
1819      - early initialization of MNC w/ flags read at the eeboot stage
1820        and lookup tables set in initialize_fixed
1821      - write all MNC output to a freshly-created directory
1822    o thermodynamics sea-ice (thsice) is now tested with testreport.
1823    o test exp. advect_cs: use the standard cs32 grid ; update output.
1824    o Added functionality to grdchk:
1825      pick global i,j,k position (or nearest wet) where to perform check.
1826    
1827    checkpoint52l_post
1828    o new land formulation:
1829      a) use ground enthalpy as prognostic variable to ensure exact
1830         energy conservation.
1831      b) account for water temperature and for latent heat of freezing
1832         in all processes (rain, run-off, ground storage)
1833      c) compute surface and ground temperature implicitly.
1834    o aim_v23 modification for new land model:
1835      a) Treat separately land / ocean / sea-ice surface fluxes
1836         to allow implicit computation of land & sea-ice surface temp.
1837      b) add snow precipitation.
1838    checkpoint52l_pre
1839    
1840    o fix problem (when 1 tile is empty) in min/max monitor.
1841    o fix bug in timeAve (u,vZetatave in common block)
1842    o no restoring terms under ice for pkg/seaice
1843    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1844    o bug fix for pkg/seaice pickups
1845    o change MNC call locations and add coordinate attributes
1846    o mask vorticity at the corner ; affects global_ocean.cs output
1847    o fix ini_curvilinear_grid ; test CS experiments with mpi
1848    o aim.5l_cs: modify sea-ice fraction input file ; update output
1849    o exf: Adding simple range check routine for exf fields after read
1850    
1851    checkpoint52k_post
1852    o removed top-level directory "diags"
1853      - we migrated these functions to pkg/timeave a long time ago
1854    o fixed bug introduced in pkg/monitor
1855    o accuracy ctrlprec = 32 insuffient for gradient checks using
1856      averaged fields (I/O via cost_averages)
1857      -> use ctrl.h in active_file*.F to control I/O precision.
1858    o paramter list of CALL ADTHE_MAIN_LOOP
1859    o added initial do_the_model_io to ecco
1860    o set all ...Freq to zero after cost_final
1861      taveFreq, dumpFreq, pChkptFreq
1862    o MAIN and ECCO differentiability restored
1863    
1864    checkpoint52j_post
1865    o fix nchklev in tamc.h for global_ocean...
1866    o Bringing flow and store directives up-to-date
1867    o Really weird thing!
1868      call do_the_model_io from the_main_loop with parameters
1869      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1870      TAF places a faulty re-call of initialise_varia
1871      after cost_final call which should not be there!
1872    checkpoint52j_pre
1873    
1874    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1875      error messages
1876    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1877    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1878      debug output
1879    o modfied mdsio_writefield.F to handle non-global files under exch2
1880    o update AIM Cubed-Sphere exp (aim.5l_cs):
1881      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1882    o update AIM Equatorial Channel exp:
1883      use standard aim_v23 pkg and change the SST fields to be more realistic.
1884    o globalFile now works with exch2
1885    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1886      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1887    o limit timeave output for hi-res integrations
1888    
1889    checkpoint52i_post
1890    o removed CPP_EEOPTIONS.h from verification/*/code
1891    o updated the tiling for global_ocean_pressure
1892    checkpoint52i_pre
1893    
1894    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1895      the old pkg/aim).
1896    
1897    checkpoint52h_pre
1898    o shortened offending lines in exch2_send_rx?.template
1899    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1900    o genmake2: add build & execute test for NetCDF code
1901    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1902      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1903    o added useSingleCPUIO flag to monitor.F and mon_out.F
1904    o added temporary hack for sea-ice dynamics on the cube:
1905      metric terms are ignored and it is assumed that
1906      there is no sea-ice on cube faces 1, 2, 4, and 5.
1907    
1908    checkpoint52f_post
1909    o added exch2 cube routines to pkg/exch2
1910    o modified hs94.cs-32x32x5 to use it
1911    o added new grid files to hs94.cs-32x32x5
1912    checkpoint52f_pre
1913    
1914    checkpoint52e_post
1915    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1916      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1917    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1918      to work with implicit vertical advection and AB ;
1919    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1920    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1921     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1922    checkpoint52e_pre
1923    
1924    o fix bug in impldiff when Nr=1 or Nr=2.
1925    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1926    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1927    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1928      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1929    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1930    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1931    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1932    
1933    checkpoint52d_post
1934    o re-tiled many expts to allow comparison in multi-processor mode
1935      - updated output accordingly
1936      - changed hs94.128x64x5 to use intial T from file rather than use the
1937        random number generator
1938    o add infrastructure in model routines for fizhi and gridalt packages
1939    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1940    o changes to permit hi-res, cubed-sphere, configuration
1941      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1942      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1943      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1944        of surface winds for the cube
1945      (A verification experiment, based on global_ocean.cs32x15, but with
1946       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1947       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1948       complete with example surface forcing files and matlab scripts to look
1949       at the output and compare it with that of global_ocean.cs32x15.)
1950    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1951       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1952       to conform to the common rule.
1953    o check-in the first version of the coupler + interfaces for multi-components
1954       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1955       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1956       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1957       - ocean and atmos. share the same horizontal grid (no interpolation).
1958       - exchanges between component and coupler is done in forward_step
1959    o new verification experiment, cpl_aim+ocn:
1960       coupled ocean - AIM atmosphere on cs32 grid.
1961    
1962    checkpoint52d_pre
1963    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1964    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1965    
1966    checkpoint52c_post
1967    o Fixing OPTIONS files for use of exf:
1968      - ALLOW_ECCO not needed
1969      - ECCO_CPPOPTIONS.h should not be included from
1970        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1971        as has been the case in the past
1972      - All cal/exf related options are currently set in
1973        single header file. Should remain so until we
1974        agree on a consistent new policy.
1975    o Removed all CPP options for cal package.
1976      cal has no more CPP options.
1977    o modified STOREs in GAD_ADVECTION
1978    o corrected key comp. for passkey
1979    
1980    checkpoint52b_post
1981    o new version: "thsice" of thermodynamic sea-ice pkg:
1982     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1983     - modify fluxes but do not change theta directly;
1984     - light cleaning of bulk_force pkg (still needed with thsice).
1985     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1986       + output_thsice.txt to test thsice & bulk_force pkgs.
1987    o put back grid & coriolis monitor output.
1988    checkpoint52b_pre
1989    
1990    o call "do_the_model_io" at the beginning (=> dump initial state)
1991    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1992    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1993      (need info on NUMBER_OF_PTRACERS)
1994    o missing PTRACERS headers in some routines
1995    o default tamc.h in pkg/autodiff supposed to crash
1996      to ensure proper customization
1997    
1998    checkpoint52a_post
1999    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2000      - moved surfaceTendencyTice from pkg/seaice to main code
2001      - subroutine FREEZE_SURFACE now limits only surface temperature
2002        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2003        => new output.txt for global_ocean.cs32x15 & global_with_exf
2004      - keep the old version of FREEZE for backward compatibility;
2005        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2006      - corresponding modifs for TAF directives
2007    o added surface flux output variables to TIMEAVE_STATVARS
2008    o time-averaged output for pkg/ptracers
2009    o fix problem with ECCO-related divided adjoint
2010      snapshot file was missing some ad-variables,
2011      but no warning issued by TAF
2012    
2013    checkpoint52a_pre
2014    o some bug fixes for #undef REAL4_IS_SLOW
2015    
2016    checkpoint52 = ecco_c52_e35
2017    o after testing adjoints of checkpoint51u_post
2018    
2019    checkpoint51u_post
2020    o this is the post-merge tag of the ecco-branch
2021      (needs another clean checkout and re-testing)
2022    o various natl_box_adjoint configs and results
2023      but no input fields
2024    o obcs adjoint not yet merged!
2025    o adding ECCO global 1x1 and 2x2 degree configs
2026    o updated/extended some store directives for seaice
2027    o pkg/ecco now containes ecco-specific part of cost function
2028    o top level routines the_main_loop, forward_step
2029      supersede those in model/src/
2030      previous input data.cost now in data.ecco
2031      (new namelist ecco_cost_nml)
2032    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2033    
2034    checkpoint51t_post
2035    o this is the pre-merge tag of the ecco-branch
2036    
2037    checkpoint51s_post
2038    o cleanup: removed various obsolete #define-s
2039    o pkg/grdchk
2040      - renamed 'ph-grd 3' to 'grad-res'
2041      - merged from ecco-branch
2042        (remaining bug fixes for obcs gradient checks)
2043      - additional high-precision output for testreport
2044        (grep for 'precision_grdchk_result')
2045    
2046    checkpoint51r_post
2047    o cleaned up or removed CPP_OPTIONS.h files
2048    o updated results for some of the tests to reflect the new
2049      optfiles (-ieee: -O0 instead of -O3)
2050    
2051    checkpoint51q_post
2052    o cd_code:
2053      - moved cd_scheme.F -> cd_code_scheme.F
2054      - separate read_checkpoint from cd_code_ini_vars.F
2055      - separated cd_code part from write_checkpoint
2056      - updated AD_SOURCE, generated .flow
2057      - added CD_CODE_VARS.h to the_main_loop
2058      - Moving cd_code specific store dir.s to pkg/cd_code
2059    o ctrl package totally restructured
2060      - pack/unpack now optional and decoupled from
2061        xx_/adxx_ I/O
2062      - ctrl_pack/unpack cleaned
2063        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2064      - confined inclusion of AD_CONFIG.h to where necessary.
2065    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2066    
2067    checkpoint51p_post
2068    o create initial cd_code package
2069      - WARNING: the initialization of fields within packages
2070        is broken because INI_FIELDS (where READ_CHECKPOINT is
2071        called) is called *before* PACKAGES_INIT_VARIABLES.
2072        This seems to be backwards since
2073        1) its important to initially zero the entire field including
2074           the "halo" region
2075        2) zeroing needs to be done *before* reading pickup info
2076           and the pickup call might or might not happen in any
2077           particular run
2078      - this needs an overhaul for R2
2079    o cleanup verification/*/code/GMREDI_OPTIONS.h
2080    o cleanup testreport
2081    
2082    checkpoint51o_post
2083    o bringing AD-related verif's up to date with genmake2
2084      - carbon/
2085      - global_ocean.90x40x15/
2086      - hs.94.1x64x5/
2087      - (front_relax/ )
2088    o (more) consistent directory structure for AD-related verif.'s
2089    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2090    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2091    o bug fix in find_alpha.F for MDJWF:
2092      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2093        change rho -> rho-rhoConst
2094      - replace call find_rho to find_rhonum
2095    o initialisation of rFlx extended to full array (required by TAF)
2096      and shifted to thermodynamics
2097    o removed PTRACERS.h in ptracers routine
2098    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2099    o Correcting initialisations for fVerU, fVerV.
2100    o helping TAF to recognize dependency on kUp for
2101      fVerU, fVerV
2102    o Replacing delZ by delR in pkg/ctrl/
2103    checkpoint51o_pre
2104    
2105    o undid all of cp51 pending some cleanups and discussion
2106    o added the [#include "AD_CONFIG.h"] statement to all files that need
2107       it for adjoint/tl #defines
2108     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2109     o removed tools/genmake since it no longer works
2110    
2111    checkpoint51n_post
2112    o modifications to make FREEZE flux visible to pkg/kpp
2113      - moved surfaceTendencyTice from pkg/seaice to main code
2114      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2115      - subroutine FREEZE now limits only surface temperature
2116        (this means new output.txt for global_ocean.90x40x15,
2117         global_ocean.cs32x15, and global_with_exf)
2118    o added surface flux output variables to TIMEAVE_STATVARS
2119    
2120    checkpoint51n_pre
2121    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2122    o added [#include "AD_CONFIG.h"] to all files that use the following
2123      defines:
2124      - ALLOW_ADJOINT_RUN
2125      - ALLOW_TANGENTLINEAR_RUN
2126      - ALLOW_ECCO_OPTIMIZATION
2127    
2128    checkpoint51m_post
2129    o incorporating changes to get TAMC/TAF working in genmake2
2130      - added new TAMC/TAF targets to the Makefile
2131      - various cleanups related to package handling
2132      - these changes should have no impact on the forward model
2133    
2134    checkpoint51l_post
2135    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2136     - faster algorithm for cal_addtime.F
2137     - higher precision arithmetic, where needed
2138     - pkg/exf *startdate variables changed from calendar date to
2139       model integration time
2140    
2141    checkpoint51l_pre
2142    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2143    o enable to apply restoring on S & T only in a latitude band.
2144    o update output (external_forcing_surf modif. change truncation errors)
2145       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2146    
2147    checkpoint51k_post
2148    o change default to: useNHMTerms=.FALSE.
2149     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2150       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2151     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2152        exp1, ideal_2D_oce
2153     - change data file of oceanic exp (leave the results unchanged for now)
2154       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2155    o set gravitySign automatically according to the vertical coordinate used
2156      (and change sign: back to "logical" value: +1 when R increases downward)
2157    o added an include barrier to the default CPP_OPTIONS.h and
2158      removed the #include "PACKAGES_CONFIG.h" from it
2159    o fix a bug in mom_fluxform (from chk51j_post)
2160    
2161    checkpoint51j_post
2162    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2163    o adjusted some flow directives (dynamics, thermodynamics)
2164    o added cubed-sphere case to test cost function
2165    o heckpoint_lev?_directives.h now include
2166      pkg-specific directives, whenever those are enabled.
2167    o Moving pkg-specific flow directives to corresponding pkg
2168      Moving pkg-specific differentiation list to corresponding pkg
2169      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2170      ---> conventions are
2171           - pkg_ad.flow
2172           - pkg_ad_diff.list
2173           - pkg_ad_check_lev?_dir.h
2174    
2175    checkpoint51i_post
2176    o merge of the branch-genmake2
2177      - knowingly breaks the older genmake
2178      - automatic generation of all ALLOW_${PKG_NAME} defines
2179      - new testreport supersedes older testscript
2180    o large number of package inclusion and header cleanups
2181    checkpoint51i_pre
2182    
2183    o new output for adjoin of global ocean vector invariant
2184    o fix for checkpoint of thermodynamic seaice and bulk_force
2185    o Steph gchem various cleanups
2186    
2187    checkpoint 51h_pre
2188    o fixed some single quotes
2189    o modify gchem pkg to be more versatile
2190    o modifications to clean up dic pkg
2191    o add pkg/cfc
2192    
2193    checkpoint51g_post
2194    o provide links for ARPACK and ADM*TLM
2195    o start removing verification/vero/
2196    o update AD-related stuff
2197      (in particular some IF-statements in model/src/ routines)
2198    o adding to verification/global_ocean.90x40x15/ adjoint of
2199      vector invariant setup
2200    
2201    checkpoint51f_post
2202    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2203    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2204      of tracer Green's fucntions for ocean inversion project.
2205    
2206    checkpoint51f_pre
2207    o Added on-the-fly spatial interpolation capability
2208        "USE_EXF_INTERPOLATION" to pkg/exf.
2209      - This is a temporary Cartesian-grid hack until
2210        the super-duper ESMF coupler becomes available.
2211      - See verification/global_with_exf/README for usage example.
2212      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2213        flags and modified pkg/seaice accordingly.
2214    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2215        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2216        non-local transport term.
2217    
2218    checkpoint51e_post
2219    o pkg/mom_vecinv:
2220      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2221      - add time-ave diagnostic of vorticity advection.
2222    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2223    o atmospheric geopotential: - include water vapor effect;
2224                                - use p^kappa in p* scaling.
2225    o land pkg: read initial state from files.
2226    o AIM : add stratospheric drag in the upper level
2227    
2228    checkpoint51d_post
2229    o change function ILNBLNK (=> last non-blank char.) to return zero
2230      (instead of the string length) when the string. char is empty
2231    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2232    o modif's to restore TAMC compatibility
2233      - avoid "_d" constructs in PARAMETER declarations
2234      - avoid interrupting lines by comment lines
2235    o Use cluster local disks for purely local I/O
2236      vs. globally visible disks needed for ctrl stuff
2237      (merged from ecco-branch)
2238      - new active_file_loc... and mdsio_..._loc routines
2239      - affected packages: autodiff, ctrl, grdchk, mdsio
2240    
2241    checkpoint51c_post
2242    o introducing integer flag debugLevel
2243      - debLevZero: suppress all output
2244      - debLevA: standard
2245      - debLevB: equivalent to current debugMode=.TRUE.
2246    o introducing pathname variable mdsioLocalDir for mdsio
2247      that can be specified at runtime
2248      (relevant for cluster I/O to local disk)
2249    `
2250    >>>checkpoint51b_post
2251    adjoint of ptracers
2252    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2253    o extended state in checkpoint_lev?, etc.
2254    o alternative ctrl/cost with tr1 or ptracer
2255    o new comlev1_bibj_ptracers
2256    o new ptracers.flow
2257    o made ptracers_forcing same as external_forcing_s
2258    o added verification for adjoint with ptracers
2259      - adm. grdchk fail so far
2260      - tlm. grdchk OK
2261      - checked tapelev/comlev recomputations: OK
2262    <<<checkpoint51b_pre
2263    
2264    checkpoint51a_post
2265    o added code for biogeochemistry package
2266      - new pkgs: dic, gchem
2267      - new subroutine in ptracers
2268    o modify code for biogeo packages
2269      - in model/src and pkg/ptracers
2270    
2271    checkpoint51
2272    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2273      - autodiff, ctrl, exf, grdchk, seaice
2274      kept separate packages
2275      - cost, ecco, obcs
2276    o updating verification/internal_wave, verification/lab_sea
2277      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2278    
2279    checkpoint50i_post
2280    o Preparing next differentiable checkpoint and sync
2281      of MAIN vs. ecco-branch
2282      - 1st step: this one is differentiable
2283      - 2nd step: next(! not this) checkpoint will have updated packages
2284                  from ecco-branch)
2285    
2286    checkpoint50h_post
2287    o new package "land": provide surface BC for AIM.
2288    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2289    o AIM: use true log-P extrapolation for near surface temp (= as in
2290        F.Molteni paper) ; update aim.5l_cs output.
2291    o New variable in PARM03 for more flexible pickups
2292    o somewhat cleaned package initialisation sequence for
2293      ctrl/ cost/ ecco/ in packages_... routines
2294    
2295    checkpoint50g_post
2296    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2297      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2298      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2299        made the default because of faster convergence than ADI
2300    
2301    checkpoint50f_post
2302    o exf totally restructured
2303      - replaced all exf_set_ routines by one generic exf_set_gen.F
2304        and made sure it's still differentiable
2305      - split exf_getffields.F into new exf_bulkformulae.F
2306      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2307      - updated adjoint/makefile and relevant verif. accordingly
2308    
2309    checkpoint50f_pre
2310     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2311          + change Evap over land. (update aim.5l_cs output)
2312     o added missing .cvsignores and made uniform across expts
2313     o changed configuration of tidal_basin_2d expt
2314     o added pkg/debug functions for tracing code in fatal crashes
2315     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2316     o new fn in pkg/monitor to stop model if solution grows too big
2317     o removed lots of single quotes from comments
2318    
2319    checkpoint50e_post
2320    o make KPP work with PTRACERS
2321     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2322       nearly a copy of kpp_transport_s
2323     - there is no analogue to SurfaceTendencyS, so I have to use
2324       gPtr(of the surface layer) instead
2325    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2326    checkpoint50e_pre
2327    
2328    checkpoint50d_post
2329    o change kpp output from multiple-record state files to single-record state
2330      files analogous to write_state.F
2331    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2332      analogous to the cg2d-related output.
2333    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2334      so that writing to internal file fn (with length 512) fails.
2335    checkpoint50d_pre
2336    
2337    checkpoint50c_post
2338    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2339    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2340    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2341    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2342    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2343    
2344    checkpoint50c_pre
2345    Merging from release1_p13:
2346    o bug fix for pkg/seaice dynamic solver
2347    o Added SEAICE_initialHEFF to pkg/seaice
2348    
2349    checkpoint50b_post
2350    o store u*,v* in gU,V instead of in guNm1,gvNm1
2351    o in order to put the momForcing out of the Adams-Bashforth:
2352      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2353      to timestep.F
2354    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2355    o re-generate output for highly sensitive test-exp:
2356       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2357    
2358    checkpoint50b_pre
2359    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2360    o corrected CPP option mismatch in exf_Bulk... functions for case
2361      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2362    
2363    checkpoint50a_post
2364    o Bug fix for merging between c50 and KPP.
2365      ikey was passed from thermodynamics to kpp_calc via
2366      common block rather than being recomputed in kpp_calc,
2367      in contradiction with new key itdkey.
2368      New key ikppkey created, and tamc.h headers updated.
2369    
2370    checkpoint50
2371    - 2nd step of merge with ecco-branch:
2372      merge changes in ecco-branch back into main trunk
2373    - bug fix in find_alpha
2374    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2375    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2376    - merged some sliced AD support routines
2377    
2378    checkpoint49
2379    merged from ecco-branch:
2380    o exf:
2381      - Enable initialisation of forcing fields to constant
2382        (runtime) values.
2383      - in exf_getffields.F
2384        Reduce i-/j-loop to interior domain, discarding overlaps.
2385        That also fixes wrong TAF-key computations for key_1, key_2
2386        with bulf formulae.
2387      - exf_init.F modify #ifdef for exf_init_evap
2388      - exf_getffieldrec.F, ctrl_getrec.F
2389        The following INT-usages are not safe:
2390          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2391          fldcount = int(fldsecs/fldperiod) + 1
2392        and were modified.
2393    o autodiff: checkpoint_lev...
2394      - updated storing for bulk formulae (some arrays were missing)
2395      - added state for seaice package
2396      - synchronized with main branch
2397    o DIVA:
2398      Modif.s in
2399      - the_main_loop.F
2400      - the_model_main.F
2401      and added cost_final_restore.F cost_final_store.F
2402      o With these changes, it is possible to fully separate
2403        the first forward run to compute the cost function (mdthe_main_loop)
2404        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2405        into separate model executions.
2406        This enables better tuning of DIVA to given queue sizes.
2407      o Loss of cost function value in consecutive DIVA runs is
2408        fixed by storing to 'costfinal' file.
2409      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2410        beginning/end of adjoint integration is accounted for.
2411      The current changes apply to TAF-1.4.26.
2412      TAF has one remaining bug, requiring one manual change
2413      (see MITgcm manual).
2414    o cal: synchronized between MAIN and ecco-branch
2415    
2416    checkpoint48i_post
2417    o Changes to restore differentiability of code w.r.t. previous tag
2418      (mostly adding new routines to make list and replacing
2419      pressure by totPhiHyd).
2420    o Updated and merged grdchk package
2421      - has both ADM and TLM checks
2422      - works for single- and multi-proc.
2423      - output cleaned
2424      - worked successfully for parallel DIVA
2425    o genmake:
2426      - Adding -platform=SP4
2427      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2428    o Modif. for DIVA:
2429      ctrl_unpack should not be called in intermediate DIVA interval.
2430      (similar thing would apply for active files such as
2431      tbar, sbar, psbar, which should not be reinitialised;
2432      only relevant for ecco-branch)
2433    
2434    checkpoint48h_post
2435    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2436    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2437    o Added SEAICE_initialHEFF to pkg/seaice
2438    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2439    
2440    checkpoint48g_post
2441    --- EOS:
2442    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2443      store total Potential in totPhyHyd for diagnostics & EOS.
2444    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2445    --- Pressure/geopotential gradient:
2446    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2447    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2448      ( changes results of global_ocean_pressure )
2449    o NLFS + z-coord.: add eta*Rho' contribution.
2450    o accurate phiHyd when using interface-W at the middle between 2 centers
2451     ( changes results of ideal_2D_oce )
2452    o includes r* 2nd term in potential gradient.
2453    
2454    checkpoint48f_post
2455    Merging from release1_p12:
2456    o Modifications for using pkg/exf with pkg/seaice
2457      - improved description of the various forcing configurations
2458      - added basic radiation bulk formulae to pkg/exf
2459      - units/sign fix for evap computation in exf_getffields.F
2460      - updated verification/global_with_exf/results/output.txt
2461    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2462      (SBO) core products, including oceanic mass, center-of-mass,
2463      angular, and bottom pressure (see pkg/sbo/README.sbo).
2464    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2465      to avoid negative values in shallow regions.
2466      - updated verification/natl_box/results/output.txt
2467      - updated verification/lab_sea/results/output.txt
2468    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2469    o Added useSingleCpuIO option (see PARAMS.h).
2470    o Updated useSingleCpuIO option in mdsio_writefield.F to
2471      work with multi-field files, e.g., for single-file pickup.
2472    o pkg/seaice:
2473      - bug fix in growth.F: QNET for no shortwave case
2474      - added HeffFile for specifying initial sea-ice thickness
2475      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2476    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2477      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2478    o pkg/seaice:
2479      - adjoint-friendly modifications
2480      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2481    
2482    checkpoint48e_post
2483    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2484    o dynamics: change definition of computational domain & adapt mom_fluxform
2485      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2486    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2487        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2488        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2489        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2490        inverted_barometer solid-body.cs-32x32x1
2491      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2492    
2493    checkpoint48d_post
2494    o in preparation for r*:
2495     a) use pre-computed gradient of hydrostatic potential:
2496        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2497     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2498        => affects results of glob_oce_pressure (different truncation error)  
2499      update output.txt of ideal_2D_oce & global_ocean_pressure
2500    
2501    checkpoint48d_pre
2502    o in preparation for r*:
2503      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2504      pass the 2 comp. of the grad. as arguments to momentum S/R.
2505      but for the moment, only used if it does not change the results.
2506    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2507    
2508    checkpoint48c_post
2509    Modifications in treatment of initial flux forcing controls
2510    to avoid extra storing of flux fields.
2511    
2512    checkpoint48c_pre
2513    o Added tidal_basin_2d experiment (currently 1D!)
2514    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2515    
2516    checkpoint48b_post
2517    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2518     (modification to pressure gradient not yet implemented)
2519    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2520      (for U & V) that are used for vertical advection of momentum.
2521    
2522    checkpoint48a_post
2523    o In preparation for r*, use temp. array to compute vertical transport
2524       in flux-form momentum pkg. => change results of few test-exp.
2525      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2526                        lab_sea, natl_box & plume_on_slope
2527    
2528    checkpoint48
2529    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2530    
2531    checkpoint47j_post
2532    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2533    o moved adexch from forward_step to addummy_in_stepping
2534    o added exch in ctrl_map_...
2535    o aveFreq.=0. at end of cost_final to avoid overwrite in
2536      reverse checkpointing loop
2537    o Yet more changes in gmredi:
2538      * adgmredi_calc_tensor
2539        avoiding all recomputation of gmredi_slope_limit
2540      * adgmredi_x/y/rtransport
2541        added flag for excessive storing to avoid recomp. of
2542        u/v/rtans, dTdx/y/z
2543        -> this is not really necessary and very memory-consuming
2544      * adgmredi_slope_psi:
2545        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2546      * gmredi_slope_limit
2547        re-activated full calculation of taperfct for case 'ac02'
2548    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2549    
2550    checkpoint47i_post
2551    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2552    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2553      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2554    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2555    o gmredi: fix few bugs.
2556    
2557    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2558    This will be a good checkpoint to plug into the ecco-branch.
2559    o few modif.'s to get latest version adjointed
2560      (mainly kick out code in ini_linear_phisurf)
2561    o modif's to run adjoint with exactConserv
2562    o case GM_BOLUS_ADVEC should be cleaned
2563      S/R gmredi_slope_psi should be cleaned
2564    o verification/carbon now has exactConserv=.TRUE.
2565    
2566    checkpoint47g_post
2567    o time-average AIM output: becomes independent from statvars time-average
2568      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2569    o After TAF bug fix:
2570      Tested adjoint of gmredi package.
2571      Tests were done with checkpoint47 rather than with latest
2572      checkpoint47f_post since the latter is broken for the adjoint
2573      verification/carbon/ contains both ADM and TLM gradient checks.
2574    Here they are, before they get changed/lost/stolen.
2575    Mostly modif.'s to fix numerical sensitivities.
2576    Gradient checks OK for
2577    - GM_taper_scheme:
2578      * clipping
2579      * ac02
2580      * linear
2581      * glw91
2582      * dm95
2583      * ldd97
2584    - GMREDI_OPTIONS:
2585      * GM_VISBECK_VARIABLE_K
2586      * GM_NON_UNITY_DIAGONAL
2587      * GM_EXTRA_DIAGONAL
2588      * GM_BOLUS_ADVEC
2589    in conjunction with data.gmredi parameters to be checked in
2590    in a few minutes under verification/carbon/code/
2591    
2592    checkpoint47f_post
2593    Merging from release1_p10:
2594    o modifications for using pkg/exf with pkg/seaice
2595      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2596        and SEAICE_EXTERNAL_FLUXES
2597      - pkg/exf CPP options EXF_READ_EVAP and
2598        EXF_NO_BULK_COMPUTATIONS
2599      - usage examples are Experiments 8 and 9 in
2600        verification/lab_sea/README
2601      - verification/lab_sea default experiment now uses
2602        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2603    
2604    checkpoint47e_post
2605    o created a tag prior to creating a branch
2606    
2607    checkpoint47d_post
2608    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2609      at the bottom boundary had an erroneous half slip boundary condition
2610    o added bottom drag and no slip boundary condition capabilities to
2611      oceanic pressure coordinates code
2612    o added new verification experiment global_ocean_pressure, this experiment is
2613      also described in the tutorial section of the manual
2614    checkpoint47d_pre
2615    
2616    checkpoint47c_post
2617    o Added a verification experiment for a global cubed-sphere ocean run
2618      -  verification/global_ocean.cubed32x32x30
2619      -  uses pkg/therm_seaice and pkg/bulk_forcing
2620    
2621    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2622    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2623      when using P-coordinate; only implemented for atmospheric config.
2624    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2625      NOTES: requires option NONLIN_FRSURF to be "#define".
2626    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2627    
2628    checkpoint47b_post
2629    Merging from release1_p9:
2630    o pkg/seaice
2631      - removed GOTO's and added taf directives
2632      - double precision constants to reduce the g77 (Linux)
2633        to F77 (SGI) differences reported in release1_p8
2634    o tools/genmake
2635      - added SGI options
2636    o verification/testscript
2637      - updated to that of checkpoint47a_post
2638    o verification/global_ocean.90x40x15/input/eedata
2639      - modified for SGI f77 compatibility
2640    o verification/lab_sea
2641      - added description of sea-ice model
2642      - added missing matlab routines
2643      - added test of thermodynamics parallelization
2644    
2645    checkpoint47a_post
2646    o new pkg: aim_v23
2647     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2648       for now, keep the same surface forcing as before.
2649     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2650     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2651     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2652    o add diagnostic of surface correction term in monitor output
2653    
2654    o bulk_force and therm_seaice
2655    - Two packages:  bulk_force (Bulk forcing)
2656      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2657    - Earlier integration from Stephaine Dutkiewicz
2658      and Patrick Heimbach.
2659    - Two ifdef statements for compile time,
2660       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2661    
2662    checkpoint47
2663    differentiable version of checkpoint46n_post
2664    o bug fix in quasihydrostaticterms
2665    o * "clean" adjoint code (in terms of extensive recomputations)
2666        can now be obtained for all GMREDI options (i.e. for
2667        - GM_VISBECK_VARIABLE_K
2668        - GM_NON_UNITY_DIAGONAL
2669        - GM_EXTRA_DIAGONAL
2670        - GM_BOLUS_ADVEC )
2671      * However, wrong gradient check problem remains unsolved.
2672      * New CPP options have been introduced for different
2673        tapering schemes
2674    o external_fields_load now part of differentiation list
2675    o pressure needs multiple storing;
2676      would be nice to have store_pressure at beginning or
2677      end of forward_step, e.g. by having phiHyd global (5-dim.)
2678      (NB: pressure is needed for certain cases in find_rho,
2679      which is also invoked through convective_adjustment).
2680    o recomputations in find_rho for cases
2681     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2682    o #define ATMOSPHERIC_LOADING should be differentiable
2683    o ini_forcing shifted to begining of initialise_varia
2684    o Incorporating QNVS line search routines into MITgcm
2685      (this is separate code, and therefore not under pkg)
2686      lsopt/, optim/
2687    o Updated verification/carbon/
2688      - #define GM_VISBECK_VARIABLE_K
2689      - GM_taper_scheme    = 'ldd97'    
2690    
2691    checkpoint46n_post
2692    Merging from release1_p8:
2693    o verification/natl_box:
2694      updating new external_fields_load routine
2695    o New package: pkg/seaice
2696      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2697      The sea-ice code is based on Hibler (1979-1980).
2698      Two sea-ice dynamic solvers, ADI and LSR, are included.
2699      In addition to computing prognostic sea-ice variables and diagnosing
2700      the forcing/external data fields that drive the ocean model,
2701      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2702      The implied surface heat flux is then stored in variable
2703      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2704      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2705      non-local transport term.  Because this call precedes model
2706      thermodynamics, temperature under sea-ice may not be "exactly" at
2707      the freezing point by the time theta is dumped or time-averaged.
2708      N.B.: fairly large differences in accuracy occur across
2709            different platforms/compilers; comparison between
2710            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2711            generated output gives:
2712       T           S           U           V
2713      C D M    c        m  s        m  s        m  s        m  s
2714      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2715      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2716      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2717    
2718      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2719    o GAD:
2720      - generated new common blocks to account for call of
2721        same gad routines with differing traceridentities
2722        (needed to modify tracerIdentity indices in GAD.h)
2723      - generated separate common blocks for case useCubedSphereExchange
2724        (Department of Futurology)
2725      - parameter lists to gmredi_?transport: added tracerIdentity
2726      - added new key indices to tamc.h
2727    o external_fields_load:
2728      - added this routine to TAF list
2729      - needed to make some common blocks global and additional storing
2730        along the same lines as exf package (checkpoint_lev?_directives.h)
2731    o exf:
2732      updated external forcing package
2733      - bug fixes carried over from ecco-branch
2734        (missing OBCS_OPTIONS.h in two routines)
2735      - enable easy to use "no forcing".
2736      - added exf I/O for atmospheric loading
2737      - added exf I/O for runoff data
2738      - transfered scaling between exf <-> MITgcm to exf namelist
2739    o Adding new verification experiment global_with_exf.
2740      This verification experiment is almost identical to the
2741      global_ocean.90x40x15 experiment, except that it uses
2742      the exf (and cal) package instead of the
2743      external_fields_load routine (cf README file).
2744    
2745    checkpoint46m_post
2746    o modified testscript to return -- when there are no lines of "%MON" output
2747    o added new flag "quasiHydrostatic" for QH mode
2748      and new routine quasihydrostaticterms()
2749    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2750      New routine: mom_u_coriolis_nh()
2751    o fixed sign of non-hydrostatic metric terms in u and v equations.
2752      Depend on correct sign of gravitySign.
2753    o added work.pc* to .cvsignore in aim directories using ifc
2754    o introduced flag for controllin non-hydrostatic metric terms
2755    o removed gravitySign from PARM04
2756    o switched to g77/ifc from pgf77 in aim experiments
2757    
2758    checkpoint46l_post
2759    o made convective adjustment work with pressure coordinates:
2760     - changed the direction of k-loop in convective_adjustment.F for the
2761       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
2762     - adjusted the reference pressure k-index in convective_adjustment.F
2763     - adjusted the convection condition in convect.F (in analogy to
2764       calc_ivdc.F)
2765     - convective_adjustment no longer computes anything on the halos
2766     - removed the warnings about negative salinity from find_rho.F and
2767       find_alpha.F; instead the new routine look_for_neg_salinity, called
2768       at the beginning of find_rho, find_alpha, and find_beta, does a
2769       check of the entire slice, if CPP-option
2770       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
2771    checkpoint46l_pre
2772    
2773    checkpoint46k_post
2774    o fixed the verification/global_ocean.90x40x15 experiment:
2775     - new bathymetry (the world according to A., JMC, and M.)
2776     - new initial fields and forcing fields (*.bin files)
2777     - new POLY3.COEFFS (for the next release one should switch to a full
2778       equation of state: JMD95P or MDJWF)
2779     - fixed several errors and redundancies in the data file
2780     - experiment uses looped cells
2781     - added matlab directory with diagnostic scripts for plotting of output
2782    
2783    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
2784     - read AIM physics parameters from a file (data.aimphys)
2785     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
2786    
2787    checkpoint46j_post
2788    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
2789    o move wVel computation at the end of the time step, in S/R integr_continuity
2790    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
2791    o update timeave pkg for wVel diagnostic.
2792    checkpoint46j_pre
2793    
2794    checkpoint46i_post
2795    o Clean up AIM package (and keep the results unchanged):
2796      include CPP_OPTION and use IMPLICT NONE in all routines ;
2797      declare all the variables _RL ; use _d 0 for all numerical constants.
2798      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
2799    
2800    checkpoint46h_post
2801    o cleaned up the use of rhoNil and rhoConst.
2802      - rhoNil should only appear in the LINEAR equation of state, everywhere
2803        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
2804        and the dynamical equations are all divided by rhoConst
2805    o introduced new parameter rhoConstFresh, a reference density of fresh
2806      water, to remove the fresh water flux's dependence on rhoNil. The default
2807      value is 999.8 kg/m^3
2808    o cleanup up external_forcing.F and external_forcing_surf.F
2809      - can now be used by both OCEANIC and OCEANICP
2810    checkpoint46h_pre
2811    
2812     Added code to convert surface volume flux (fresh water) into
2813     a mass flux when using P coordinates in the ocean (OCEANICP).
2814     Note: It assumes you have set rho0=rhoConst=density of fresh water.
2815    
2816    checkpoint46g_post
2817    o Include a new diagnostic variable phiHydLow for the ocean model
2818      - in z-coordinates, it is the bottom pressure anomaly
2819      - in p-coordinates, it is the sea surface elevation
2820      - in both cases, these variable have global drift, reflecting the mass
2821        drift in z-coordinates and the volume drift in p-coordinates
2822      - included time averaging for phiHydLow, be aware of the drift!
2823    o depth-dependent computation of Bo_surf for pressure coordinates
2824      in the ocean (buoyancyRelation='OCEANICP')
2825      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
2826        Theta, Salinity, and Pressure in the parameter list. This routine is
2827        presently contained in find_rho.F. This routine does not give the
2828        correct density for 'POLY3', which would be a z-dependent reference
2829        density.
2830    o cleaned up find_rho
2831      - removed obsolete 'eqn' from the parameter list.
2832    o added two new verification experiments: gop and goz
2833      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
2834    checkpoint46g_pre
2835    
2836    checkpoint46f_post
2837    o Enable tangent linear (forward mode) gradient checks:
2838      - extended active file handling to g_... files
2839      - added TANGENT_SIMULATION to theSimulationMode
2840      - extended grdchk package accordingly
2841    o added tangent linear setup in verification/carbon/code_ftl
2842    o added adjoint setup in verification/front_relax/code_ad
2843    
2844    checkpoint46e_post
2845    o Added new equation of state -> MDJWF
2846      - EOS of McDougall et al., 2002, JAOT, submitted
2847      - caveat: the equation of state is only valid for a smaller (more
2848        realistic?) range of values than JMD95P/Z and UNESCO
2849      - added masks to the calculation of pressure in store_pressure
2850      - added more check values for density in check_eos (ini_eos.F), some of
2851        the old check values are out of the range of the MDJWF-eos, so don't
2852        expect perfect matches for those
2853    checkpoint46e_pre
2854    
2855    checkpoint46d_post
2856    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
2857      'OCEANICP', also initialised field pressure correctly in ini_eos in the
2858      case of pressure coordinates. eosType='JMD95Z' in
2859      combination with buoyancyRelation='OCEANICP' now causes an error.
2860    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2861      in find_alpha/beta.
2862    checkpoint46d_pre
2863    
2864    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2865      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
2866    
2867    checkpoint46c_post
2868    o Changes necessary for ocean in p-coordinates
2869     -  Added new buoyancy relation = 'OCEANICP'
2870     -  Added new parameters = gravitySign (this used to be contained inside
2871        the factor dRdZ which I added when we first switched to R coordinates).
2872     X GM/Redi is not compatible (yet)
2873     X bottom drag and no-slip need to be debugged.
2874    checkpoint46c_pre
2875    
2876    checkpoint46b_post
2877    o Added new equation of state -> JMD95Z and JMD95P
2878      - EOS of Jackett and McDougall, 1995, JAOT
2879      - moved all EOS parameters into EOS.h
2880      - new routines ini_eos.F, store_pressure.F
2881    o Added UNESCO EOS, but not recommended because it requires
2882      in-situ temperature (see JMD95)
2883    o Modified formatting for knudsen2.f in utils/knudsen2 and added
2884      unesco.f to be used with POLY3
2885    checkpoint46b_pre
2886    
2887    checkpoint46a_post
2888    o Added (atmospheric) pressure loading
2889      - new field in FFIELDS.h, etc...
2890      - new cpp flag ATMOSPHERIC_LOADING
2891    o Changed hFacC to _hFacC in calc_phi_hyd.F
2892    o Added SHORTWAVE_HEATING to some files for consistency
2893    checkpoint46a_pre
2894    
2895    checkpoint46
2896    further merges from release1_p5
2897    o new ctrl package
2898      - adopted from ECCO environment to enable optimization
2899      - added Eliassen Palm fluxes to controls
2900    o added Eliassen Palm flux controls to gradient check package
2901    o cost package
2902      - Compatible with new ctrl package
2903      - added Eliassen Palm cost hooks
2904      - modif's of existing cost functions
2905    o Adjoint-related bug fixes in kpp:
2906      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
2907      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
2908    o autodiff package
2909      - flow directives:
2910        + new for S/R do_the_model_io
2911        + enhanced for S/R checkpoint
2912        + new gmredi.flow
2913      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
2914        disable adcommon.h/g_common.h by default.
2915      - fixed problem for adjoint of global_max
2916    o modified verification/carbon/
2917    o New setup for adjoint of global_ocean
2918    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
2919    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
2920    o incorporated hooks for sponge layer code (external_forcing.F)
2921    
2922    checkpoint45d_post
2923    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
2924    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
2925      (affects plume_on_slope "cg2d" output)
2926    o add new parameter deltaTfreesurf for free-surface time stepping
2927    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
2928    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
2929    o change phiMin in exp1 (to agree with documentation)
2930    o add new flags:
2931     - T,S forcing inside/outside Adams-Bashforth
2932     - turn off temp,salt advection and/or forcing
2933     - for each tracer, define internal flag for multiDimAdvection & A-B
2934    o monitor: change definition of KE to check conservation of Energy
2935    
2936    checkpoint45c_post
2937    o Removed f90 comments ("!")
2938    o Modified initialisations to enable exf package for MITgcm
2939      (without invoking ECCO_PACKAGE).
2940    o modifications to gradient check package (Martin Losch)
2941      - enable centered differences
2942      - modified format of standard output
2943    
2944    checkpoint45b_post
2945    o cleaned exchange calls in cg2d
2946    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
2947    o included CPP option SINGLE_LAYER_MODE in thermodynamics
2948      to configure barotropic setup (Martin Losch)
2949    o moved some initialisations within bi,bj loop in dynamics
2950      (TAF flow dependency)
2951    o in initialise_varia, moved call packages_init_variables
2952      before convective_adjustment_init
2953      (corresponding adjustment of TAF tape initialisation).
2954    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
2955    
2956    checkpoint45a_post
2957    o compute Rho over the whole domain (extend iMin,jMin indices)
2958    o specific exchange for X-slice domain (case Ny=1)
2959    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
2960    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
2961    
2962    checkpoint44h_post = checkpoint45
2963    o Fix to restore differentiability:
2964      place at which packages_init_variables is called in
2965      initialise_varia is crucial for reverse control flow.
2966    o modifications in GMRedi to enable stable adjoint
2967      (corresponding modif's in thermodynamics, dynamics)
2968    o added missing hook for sponge layer code in external_forcing
2969    o modified test cost functions
2970    o storing in gad_advection (plus removal of write(0,*)!
2971    o missing headers TR1.h added in convective_adjustment routines
2972    o errorMessageUnit set non-equal zero in eeboot
2973      (conflict on some platforms, e.g. IBM SP3)
2974    o modified carbon verif.
2975    
2976    checkpoint44h_pre
2977    o vertical grid option: allow to put the Interface at the middle between
2978      2 cell-centers ; replace delZ in pkg/kpp by drF.
2979    o GM Advective form: Tracers are advected using the residual transport (=
2980      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
2981    
2982    checkpoint44g_post
2983    o fix surface correction term in multiDimAdvection (affects plume_on_slope
2984      results) ; ifdef missing in thermodynamics.F
2985    
2986    checkpoint44f_pre,checkpoint44f_post
2987    o added PTRACERS package
2988      This allows an arbitrary number of passive tracers to be integrated
2989      forward simultaneously with the dynamicaly model.
2990      + Implemented so far:
2991        - basic forward algorithm (time-stepping, advection, diffusion, convection)
2992        - I/O and checkpointing
2993        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
2994      + Not implemented so far:
2995        - KPP
2996        - OBCS
2997      + No specific example supplied (yet) but global_ocean.90x40x15 has the
2998        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
2999        line in data.pkg.
3000      + This package is disabled by default since it increases storage.
3001    
3002    
3003    o testscript: added -cleanup option
3004    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
3005                 b) enable to filter 2D fields.
3006    
3007    checkpoint44e_pre,post
3008    o re-wrote convective adjustment to use pre-calculated weights
3009      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
3010      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
3011      Original calls to convect() still in place.
3012    
3013    chkpt44d_pre,post
3014    o added missing EXCLUDE_MONITOR flags
3015    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
3016      (incompatible typ in MIN/MAX expressions caused problems
3017      on IBM SP3)
3018    o in genmake added variable MAKEDEPEND
3019      plus resetting for case SunOS
3020    o added timer_stats.c routine for IBM SP3
3021    o removed variables in dynamics
3022    !!! I forgot to create tag chkpt44d_pre !!!
3023    !!! But chkpt44d_pre = chkpt44c_post    !!!
3024    
3025    o real fresh water flux implemented with non-linear free-surface.
3026    
3027    chkpt44c_pre,post
3028    o few fix (mask in shap_s2, EmPmR in external_field_load,
3029      USE_NATURAL_BCS in solve_for_P);
3030    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
3031    
3032    checkpoint44b_pre/_post
3033    o merge of relevant stuff from the ecco-branch:
3034      - genmake: removed $S64 overwrite for case SunOS
3035      - pkg/exf: update and corrections for field swapping and obcs
3036      - pkg/ecco: parameter lists for the_model_main, the_main_loop
3037                  harmonized between ECCO and MITgcm
3038      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
3039                      updated checkpointing_lev... lists for obcs
3040      - model/src: minor changes in forward_step, plot_field
3041                   added directive for divided adjoint in the_main_loop
3042      - pkg/mdsio: added mdsio_gl_slice
3043    
3044    o check parameters & config (chkpt44a_pre,post)
3045    o OBC and NonLin_FrSurf.
3046    
3047    checkpoint44
3048    o fix bug in mom_vi_del2uv
3049    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
3050    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
3051    o update AIM experiments (NCEP input files)
3052    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
3053    o added some stuff for AD
3054    
3055    checkpoint43
3056    o added two new advection tests
3057    o added global 4x4 degree ocean test
3058    o added test of H&S94 with free surface on cube
3059    o some final mods for gradient check, adjoint,...
3060    
3061    checkpoint42
3062      Fixed AD-related problems:
3063    o Store directives up-to-date with re-arranged Adams-Bashforth
3064      (mainly thermodynamics.F)
3065    o New store directives for multi-dim. advection schemes
3066      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
3067      * new common block and key passkey
3068      (mainly gad_advection.F)
3069    o Modified store directives for split of dynamics/thermodynamics
3070      for the case ALLOW_KPP
3071    o Cleaned argument list for timestep_tracer.F
3072    
3073    checkpoint41
3074    o re-formatted/added comments in prologues of key subroutines
3075      to work with protex
3076    
3077    checkpoint40
3078    o moved calc_gs, calc_gt and calc_tr1 back to model/src
3079    o added FLT (floats) package from Arne along with demo. experiment
3080    o re-arranged Adams-Bashforth scheme for tracers to allow easier
3081      implementation of forward-in-time forcing terms
3082    o more mods for non-linear free-surface including new variable
3083    o modified multi-dim method to work on cube
3084    o bug fix in KPP (from DM)
3085    
3086    checkpoint40pre9
3087    o added DST advection schemes
3088    o fix MPI bug on SGI's
3089    o modifications for non-linear free-surface
3090    o fixed conditionals for fixed flow/passive tracer only mode
3091    o added tension/strain form of stress tensor
3092    o changes to commenting of arguments for TAF/TAMC
3093    o added/updated many matlab scripts
3094    o added multi-dimensional advection method for tracers
3095      
3096    checkpoint40pre8
3097    o new package rw/
3098      Added method for dumping intermediate local arrays:
3099      mdsio_writetile - same as mdsio_writefield except works from inside
3100                        bi,bj loop
3101      mdsio_writelocal - same as mdsio_writetile except works for local
3102                         arrays
3103      write_local_r? - higher-level wrapper for mdsio_writelocal
3104      Controlled by diagFreq. Defaults to zero (ie. no dumps)
3105      Example given at end of mom_vecinv.F that dumps some local arrays.
3106    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
3107      control flux-form versus vector invariant code.
3108      Switch is runtime flag vectorInvariantMomentum (defaults to false)
3109      or genmake -DISABLE ...
3110    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
3111      (additional storing is now needed for case vecinv;
3112      currently nothing implemented to switch this storing off
3113      in case fluxform is used since no CPP flag available).
3114    
3115    checkpoint40pre7
3116    o bug fix in dynamics.F
3117      calc_viscosity called before k=1,Nr loop.
3118    o added some #ifdef's ALLOW_PASSIVE_TRACER
3119    o cleaned initialisations in ctrl_map_ini
3120      related to TAF
3121    
3122    checkpoint40pre6
3123    o split dynamics into thermodynamics & dynamics
3124    o corresponding split of calc_diffusivity into
3125      calc_diffusivity, calc_viscosity
3126      (kpp_calc_diff, kpp_calc_visc).
3127    o Added diffkr, kapgm to control variables
3128    o bug fix in gmredi_slope_limit for ldd97
3129    
3130    checkpoint40pre5
3131    o proper initialization of Adams-Bashforth time stepping
3132      + uses forward step for very first step of model (iter=0)
3133    o re-generated *all* output since almost all output is modified by this
3134      change (sorry but we've been putting this one off for about 2 years)
3135      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
3136        *not* regenerated since they are already out of date and I don't
3137        want to create the impression that they are suddenly working.
3138    o removed KAP stuff for DEC's
3139    o modified/added many .cvsignore files in */code and */input
3140    o added new expt "solid-body.cs-32x32x1"
3141      + this uses an alternative form of ini_curvilinear_grid.F which
3142        is not necessarily any better than the current one...
3143    
3144    checkpoint40pre4
3145    o added re-initialisations of utrans,vtrans,rtrans in
3146      calc_common_factors which are crucial for TAF.
3147    o extended iMin,jMin range for calc_common_factors,
3148      calc_diffusivity
3149    o added option ALLOW_PASSIVE_TRACER
3150    o a few minor updates and fixes
3151    
3152    checkpoint40pre3
3153    o created calc_gtr1.F for gad package
3154    o split the_main_loop and re-introduced forward_step
3155    o some recomputations of nIter0 for TAMC
3156    
3157    checkpoint40pre2
3158    o Updated to latest branch of AJA, JMC
3159    o Added gradient check package
3160    o Added routines for passive tracer handling
3161    o Added carbon sequestration sensitivity experiment
3162    
3163    checkpoint39
3164     o Modifications and fixes to support TAMC
3165       (mainly missing or wrong directives)
3166     o Corrected common blocks when fooling TAMC to produce adjoint I/O
3167       in addummy_in_stepping
3168     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
3169     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
3170     o Included following packages:
3171       cal: calendar
3172       exf: external forcing
3173       ecco: essential routines to control use of cal, exf
3174             (NB: this is not the full ECCO environment)
3175     o disabled some packages by default in genmake
3176    
3177    checkpoint38
3178     o see notes_c37_adj.txt
3179     o corrected wrong layer index in external_forcing_t
3180     o replaced the_main_loop/forward_step by the_main_loop
3181     o removed forceoutput from write_state
3182       (replaced criteria for initial/final state)
3183     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
3184    
3185    checkpoint37
3186     o mdsio.F routine split and packaged in pkg/mdsio
3187       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
3188        used unless genmake -disable=mdsio)
3189     o allow a more precise surface-geopotential gradient for the atmosphere
3190       taking into account the change in space of Alpha (=1/rho) at the surface.
3191     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
3192       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
3193     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
3194       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
3195       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
3196     o Time-Average diagnostics defined as a pseudo package "timeave".
3197     o pickup files : old pickup (before c35) did not work with new code (c35
3198       and after) unless activating 2 commented lines in initialise-varia.
3199     o Non-Hydrostatic pickup file Pb fixed.
3200     o bug with Rigid-lid version (since c35) fixed.  
3201    
3202    checkpoint36
3203     o implement Crank-Nickelson barotropic time-stepping
3204     o recover Time-Average diagnostics
3205     o fix Pb in checkpoint (PR#19)
3206     o AIM become a standard package ; clean unused CPP_kees
3207    
3208    checkpoint35
3209     o subtantial rewrite of dynamics.f
3210     o allows staggered time-stepping
3211     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
3212     o added bottom drag (linear + quadratic)
3213    
3214    checkpoint34
3215     o Modified exchange routines for correct reverse simulation.
3216     o Added verification output to comply with bug fix in impldiff.F
3217       as of c33 (exp2, natl_box).
3218     o Corrected store directives in dynamics.F
3219     o Corrected array boundaries in impldiff.F
3220     o Corrected array dimensions in gmredi.
3221       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
3222     o Added routine GLOBAL_SUM_INT to global_sum.F
3223     o Added mdsio_gl.F for ECCO purposes.
3224    
3225    checkpoint33
3226     o Fixed bug in lower BC in impldiff.F
3227     o Fixed confusion about units of forcing arrays in FFIELDS.h
3228       namely Fu,Fv,Qnet,Qsw,EmPmR:
3229       - Removed verification/natl_box/code/external_fields_scale.F
3230         (did not differ from that in model/src)
3231       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
3232         (see FFIELDS.h for description)
3233       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
3234         kpp_calc.F and kpp_transport_t.F
3235       - Removed model/src/external_fields_scale.F and calls to it
3236       - verification/natl_box uses flux data with "atmospheric" sign so
3237         a special version of external_fields_load.F is used to
3238         change the data as it's read in. This way, the arrays
3239         have the right units and signs at all times tha a user could
3240         possibly use them.
3241     o Corrected genmake to delete a temporary file during configuration
3242    
3243    checkpoint32
3244     o Scaling of forcing fields moved from external_forcing.F to
3245       external_fields_scale.F, called directly after loading fields.
3246     o Surface relaxation terms added to surface tendency fields in
3247       extra subroutine.
3248     o impldiff.F changed to avoid storing by TAMC of huge intermediate
3249       fields.
3250     o Changes in GMRedi to comply with packaging structure.
3251     o Modifications and bug fixes in KPP package.
3252     o Verification experiment for KPP added (verification/nat_box/)
3253    
3254    checkpoint31
3255     o Packages interface brought in line with defined standard
3256       -> new routines packages_...F
3257       -> changes in initialise_fixed.F, initialise_varia.F
3258       -> enables initialisation interface for ECCO package
3259     o Rescaling of external forcing fields immediately after read
3260       (removed from external_forcing.F)
3261       -> new: surface_fields_scale.F
3262       -> affects ini_foorcing.F, external_fields_load.F
3263     o Computation of surface tendencies before tendency updates.
3264       -> new: external_forcing_surf.F
3265     o Change of variable names useGMRedi, useKPP, useECCO
3266     o Further changes in dynamics.F, impldiff.F for TAMC
3267     o Tested for experiments 0, 2, 4.
3268       - not yet tested for GMRedi.
3269       - not yet tested for KPP.
3270    
3271    checkpoint30
3272     o Updates for OBCs
3273     o New experiment for test OBCs (internal_wave)
3274     o New output.txt in verification/exp4/results/
3275     o Updates for KPP: calculation of viscosity corrected, new variables
3276       kpp_dumpFreq and kpp_taveFreq
3277     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
3278       and entry for T90 in genmake
3279    
3280  checkpoint29  checkpoint29
3281   o packaged KPP and GM/Redi   o packaged KPP and GM/Redi
3282    

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