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revision 1.32 by adcroft, Thu Nov 30 16:51:40 2000 UTC revision 1.828 by jmc, Sun Jun 3 23:32:28 2007 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o add S/R and diagnostics for oceanic mixed-layer depth
8    o move GMRedi call after all vertical mixing schemes (including KPP)
9    o pkg/thsice:
10     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
11      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
12    o pkg/obcs:
13     - bug fix for balance code
14    o pkg/seaice:
15      - allow values of SEAICE_elasticParm > 1
16      - add new parameter SEAICE_evpTauRelax as an alternative
17        to SEAICE_elasticParm
18      - make lsr boundary conditions free slip (by default), changes result
19      - add code for no slip boundary conditions for lsr
20      - set minimum of zeta to zero (and not 4e8) (changes results)
21      - add a cap on AREA after advecting AREA if seaice_growth is not called
22    o change calculation of Visbeck K:
23      - no longer depend on tapering scheme; instead, compute slope (limited
24        by GM_maxSlope). this is equivalent to what was comuted before with
25        clipping or linear tappering.
26      - fix vertical averaging (wrong by 1/2 level)
27      - leave the old version (but will not be maintained) within
28        #ifdef OLD_VISBECK_CALC / #endif
29      - update output of exp. ideal_2D_oce
30    o change error catch in calc_r_star to improve vectorization
31    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
32      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
33    o adjoint:
34      Re-organized adjoint checkpointing according to Matt Mazloff
35      (but with modifs/completions/cleanups)
36      Storing is now bundled into large arrays to optimized I/O
37      (and second step in cleanup of the_main_loop)
38    
39    checkpoint59b
40    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
41      - export/import (between ocean & coupler) fields needed for ocean DIC.
42    o pkg/seaice:
43      - get rid of three more exchanges seaice_calc_viscosities (required
44        different loop boundaries in seaice_lsr and seaice_ocean_stress)
45      - bug fix in seaice_ocean_stress (update of lab_sea required)
46      - reduce loop boundaries to necessary minimum also in seaice_evp
47      - go back to the old way of computing deltaC/Z as the adjoint likes that
48        better
49    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
50      passive tracer to an Age Tracer) + update output.txt
51    o pkg/exf:
52      - implement A-grid / C-grid selection for wind-stress input files.
53      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
54      for now, in exf_bulk_largeyeager04.F only :
55      - change implementation for case where windspeed + 2. components wind-stress
56        are read-in. AND use rhoConstFresh to convert evap.
57    o pkg/seaice:
58      - use correct EXCH_UV for wind-forcing (on A-grid).
59      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
60        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
61    o pkg/exf:
62      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
63      EXF_INTERPOLATION:
64      - merge global_with_exf/code version of exf_interp_read.F
65        to the main code ;
66      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
67        reading the file ; Important: This options needs to be defined to recover
68        previous code.
69        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
70      - no longer loose real*8 precision along the way when using exf_iprec=64.
71    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
72      - change discretisation of evp-solver in order to avoid another exchange
73        (changes lab_sea) and clean up a little
74      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
75        help the adjoint (this also changes the results slightly)
76      - add a few "_d 0" where they had been missing in seaice_evp.F
77      - cleaning up: remove unused seaice_calc_rhs.F
78    o pkg/exf: some cleaning-up:
79      - change various "constants" into runtime parameters
80      - cleaned-up Large&Yeager04 routine which should eventually
81        replace exf_bulkformulae.F (changed names of S/R and CPP)
82        and merged various ALLOW_ATM_WIND options
83     only used with thsice pkg (in thsice_get_exf.F):
84      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
85        which are used when useStabilityFct_overIce=TRUE (= the default)
86      - change default values of ice & snow emissivity and scale downward LW
87        by ice & snow emissivity.
88    o pkg/thsice:
89     fix few little problems, in thsice_calc_thickn.F:
90      - growth vertically (and not laterally) if iceFrac == iceMaskMax
91      - melt only laterally if hIce < hThinIce (as the comments say)
92      and in thsice_extend.F:
93      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
94      - start to form ice as soon as the minimum ice-volume is reachable.
95     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
96      and cpl_aim+ocn
97    o pkg/kpp
98     - move computation of surface related input fields to KPP into a new
99       subroutine kpp_forcing_surf.F
100     - remove wrong (within bi,bj loops) EXCH calls.
101     - little cleaning (add argument myThid in last position, cvs header ...)
102     - for now, fix conservation problem by exchanging KPPviscAz (may not
103       be the best fix)
104    o pkg/seaice
105     - check for inconsistent evp parameter/cpp-flag combination
106     - remove leftover errIO flat for obsolete name list error handling
107    o OpenAD
108     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
109    
110    checkpoint59a
111    o pkg/seaice: some parameter clarifications and a little bit of clean up
112    o pkg/thsice: rename run-time parameters:
113       himin       -> hIceMin
114       himin0      -> hThinIce
115       hihig       -> hThickIce
116       i0          -> i0swFrac
117       transCoef   -> bMeltCoef
118       frac_energy -> fracMelting
119      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
120       with default values (for now) that do not change the results.
121      remove old version of thsice vars advection in pkg/seaice.
122    o in FFIELDS.h:
123      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
124      - make pLoad & sIceLoad always available (but still only used if
125         ATMOSPHERIC_LOADING is #define).
126    o pkg/kpp: replaced _KPP_RL with _RL
127    o bug fixes for vertical diffusivity computations when both KPP and
128        3D diffusivity arrays are used.
129    o pkg/seaice: fix bug in evp solver, while doing that
130      - change (improve?) discretization of stress computations for both
131        cgrid-lsr and evp solver
132      - add a new routine to compute strain rates
133      - the above changes lab_sea results
134      - add no slip conditions for evp solver (off by default), lsr-version
135        may follow
136      - fix exchange for shear at Z-points (does not change lab_sea)
137      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
138        (to force the user to pick a time step since there is not "safe" way
139        of choosing it)
140      - add principal stress diagnostics
141      - rearrange fields for evp a little to avoid having to call a: too many
142        exchanges and b: exchanges for stress trensor components which we do
143        not have.
144      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
145        of evp, complete rewrite for lsr case (latter is does not yet work
146        in all cases)
147    o pkg/kpp: add code to have mixing in shelf ice caverns
148      - add myThid to all kpp routines (long overdue)
149    
150    checkpoint59
151    o pkg/exf:
152      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
153        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
154      - move exf header files from lower_case.h to UPPER_CASE.h ;
155        add missing cvs Header & Name
156      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
157      - add namelist param. selectStressGridPosition, exf_monFreq
158      - retire many _CLIM routines, and remove data.exf_clim
159        + params moved to data.exf
160        + climsst, climsss now handled by exf_set_gen, i.e.
161          climss?period=0 refers to constant field,
162          climss?period=-12 to monthly forcing
163      - split up namelists in data.exf
164    o pkg/seaice:
165      - remove seaice_exch and seaice_exch_uv
166      - remove superfluous exchange of theta
167      - add myThid to seaice_budget_ocean/ice
168      - add new interface for atmospheric wind forcing (C-grid only)
169        + new routine
170        + two new field (taux, tauy for stress over ice)
171        + removed one global field (DAIRN) for C-grid case only
172    o pkg/thsise
173      - 2nd set of modifs for thsice adjoint in conjunction with exf
174    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
175    
176    checkpoint58y_post
177    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
178      vertical diffusivity, similar to that in MOM4; turned on using
179      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
180      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
181    o Added capability for 3D specification of background vertical diffusion
182      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
183      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
184      "data" file that contains the 3D vertical diffusivity coefficients.
185    o ice dynamics (pkg/seaice) with thsice thermodynamics:
186      - add code within pkg thsice to advect & diffuse sea-ice fields
187      similar to (and will replace) what has been added in  seaice_advdiff.F,
188      but: - conserving Mass, Heat & Salt.
189           - better when using non-linear advection scheme (not yet fully tested)
190           - can also be used in atmospheric set-up (for now, only the diffusion).
191    
192    checkpoint58x_post
193    o IO option for global-file compact format:
194      - add options when generating topology (utils/exch2/matlab-topology-generator)
195      - add I/O capability (pkg/mdsio).
196      - adapt utils/matlab/rdmds.m to read this format.
197      for now long-line format not yet supported by pkg/mdsio (& exch2).
198    o shelfice: add a few diagnostics
199    
200    checkpoint58w_post
201    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
202      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
203      (and replace horiVertRatio in NH code).
204      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
205                         and tutorial_plume_on_slope (sensitive to truncation)
206    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
207      directly to drive seaice model (C-grid only)
208    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
209     - reintroduce computation of wind from stress,
210     - compute tau (in exf_bulkformulae.F) from windstress averaged to
211       mass points to avoid tau = 0
212     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
213    o rdmnc.m: make it work with "global" files created with gluemnc
214    o rdmnc.m : some improvements in dealing with singleton dimension
215      (tested on all testreport mnc output files).
216    o genmake2: disable pkg/profiles if netcdf test fails.
217    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
218    o move call to cal_readparms up to make calendar parameters/variable available
219      to all packages
220    
221    checkpoint58v_post
222    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
223      useDynP_inEos_Zc tested.
224    o pkg/exf: changes to properly interpolate/mask/scale initial fields
225    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
226      and portions thereof.  See read_cs.txt for description and examples.
227    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
228      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
229      following the great-circle arc between those 2 points.
230    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
231      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
232    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
233     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
234     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
235     - still needs work (not working with some options ; efficiency to improve)
236       and serious testing.
237     - use this scheme for temperature & salinity in 2 advection test exp.:
238       advect_xy & advect_xz, respectively.
239    
240    checkpoint58u_post
241    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
242    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
243    o testreport: add option "-skipdir" to skip some test.
244    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
245      momentum calculation.
246    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
247    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
248      remove checkpoint.F and the_correction_step.F (no longer used);
249      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
250    o add option (linFSConserveTr) to correct for tracer source/sink due to
251      Linear Free surface
252    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
253    o pkg/thsice: fix reading mnc-pickups
254    
255    checkpoint58t_post
256    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
257    o pkg/mdsio:
258     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
259       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
260       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
261     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
262     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
263       either MDS_READ_FIELD or MDS_WRITE_FIELD )
264     - new S/R (to replace MDSWRITEMETA), which allows to write more
265       informations (variable names, time ...) to meta files.
266     - modify rdmds.m to give back the meta file content.
267    o pkg/diagnostics: change vertical interpolation to be safer, and more
268       flexible (define p-levels to interpolate to in data.diagnostics);
269      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
270       diagnostic pointer.
271    o pkg/seaice: more cleaning up of seaice_growth, added many comments
272    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
273    o fix multi-category seaice:
274     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
275       SEAICE_MULTICATEGORY
276     - fix short wave heat flux
277    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
278       and allow to use EVP solver. Change forward lab_sea: test both EVP
279       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
280    o Initial check-in of lab_sea adjoint
281      (very similar to natl_box_adjoint/code_seaice)
282      * used C-grid and EVP solver
283      * used KPP, GM/Redi
284      * uses inAdExact=.TRUE.
285      * gradient checks fail for both ADM and TLM
286        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
287        f.d. gradients actually seem more problematic than ADM, TLM gradients;
288        issue is related to forward mismatch between g77 an ifort
289    o pkg/seaice: overhaul of thermodynamics
290     - growth.F and groatb.F are replaced by new routine seaice_growth.F
291     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
292     - move a few global fields out of SEAICE.h into seaice_growth.F and
293       make them 2D (FICE/QNETO/ ...)
294     - remove FO (it is the same as QNETO)
295     - introduce a few local fields to avoid modifying external fields such
296       as atemp, etc.
297    
298    checkpoint58s_post
299    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
300      changed exf_set_gen.F so that
301        genperiod=0 means input file is one time-constant field and
302        genperiod=-12 means input file contains 12 monthly means
303    o CG2D: use pre-computed solver main-diagonal (stored in common block);
304      this affects truncation error ; generate new output file for exp. which
305      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
306        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
307        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
308        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
309        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
310        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
311    o start implementation of deep-atmosphere and anelastic formulation
312    o verification: remove 2nd copy of input files and use script "prepare_run"
313      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
314    o mom_common/vecinv/fluxform: fix a few initialisation isssues
315    o profiles: fix for multithreaded case
316    
317    o diagnostics: rename few diags:
318      s/'PRESSURE'/'RCENTER '/g
319      s/'TICE    '/'oceFreez'/g
320      s/'TAUX    '/'oceTAUX '/g
321      s/'TAUY    '/'oceTAUY '/g
322      s/'SWFLUX  '/'oceQsw  '/g
323      s/DIFx/DFxE/g
324      s/DIFy/DFyE/g
325      and add few ocean-forcing diagnostics:
326      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
327    o modifications to pkg/seaice/growth.F and budget.F, which change results of
328      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
329      as actual snow thickness.  It now refers everywhere to effective snow
330      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
331    
332    checkpoint58r_post
333    o modifications to pkg/seaice/growth.F, which change results of
334      lab_sea experiment: fixes pertain to melting snow over open water, to
335      masking EVAP under sea ice, and to using the correct AREA variable for
336      computations of EVAP, PRECIP, HSNOW, and GHEFF
337    o add ability to read bathy, salt, and theta using MNC (off by def)
338    o add flooding algorithm and advection of HSNOW for pkg/seaice;
339      both are turned off by default and do no change any results
340    o seaice advection with pkg/thsice: a step toward the use of non-linear
341      advection scheme, but #ifdef or commented out for now (requires more EXCH).
342    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
343      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
344      in natl_box (affects results @ truncation level: update output.txt)
345    o multi-threading and IO:
346      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
347      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
348        (needed to work with SingleCpuIO): tested in all verif. exp.
349    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
350      affects the results (but none of the verification test uses this scheme).
351    o Adding some pkg/diagnostics capability to pkg/seaice
352      (will certainly be subject to changes)
353    o ctrl: adding new control variables:
354      lwflux, lwdown, evap, snowprecip, apressure, runoff
355    
356    checkpoint58q_post
357    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
358      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
359      high_res_cube configuration by 4% on Columbia.
360    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
361      add (in global_with_exf/code) a version of EXF_INTERP_READ without
362      dynamical allocation (seems to work in multi-threaded).
363    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
364      single CPU io) so that TAF does not have to see EESUPPORT.h
365    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
366    
367    checkpoint58p_post
368    o obcs: stop if obcs is used with useCDscheme = .true.
369    o shelfice:
370     - fix a sign error so that no slip at shelfice interface works
371     - remove stop for combination non-hydrostatic code and shelfice. That does
372       not mean, that the results are correct, but at least they are numerically
373       stable
374    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
375    o added adjoint exch routined for all exch*3d* routines
376      and updated flow directives
377    
378    checkpoint58o_post
379    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
380      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
381    o change controling S/R for writing pickup file (new S/R do_write_pickup)
382      and clean-up reading/writing of pickup files.
383    o fix local version of read/write pickup (NH part) in rotating_tank/code
384    o simplify EXCH interface:
385     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
386     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
387    o added the regrid package
388    o shelfice:
389     - add a simple boundary layer scheme to reduce noise
390     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
391    
392    checkpoint58n_post
393    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
394       local variable (not in common block).
395    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
396      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
397      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
398        to work with SingleCpuIO.
399    o add "_d 0" to real constant of pkg/cfc subroutines ;
400       update exp. cfc_exemple & tutorial_cfc_offline output files.
401    o multi-threading and IO:
402      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
403        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
404      - barrier before and after reading.
405      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
406      - avoid using MDS_WRITELOCAL for LAND pkg output.
407      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
408        common-block variables ; Allows multi-threading with master-thread IO.
409    o change default MAX_NO_THREADS from 32 to 4 ;
410      and stop cleanly when MAX_NO_THREADS is too small.
411    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
412    
413    checkpoint58m_post
414    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
415       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
416    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
417       keep global_ocean.90x40x15 (for AD testing) with former secondary test
418       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
419    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
420        add MITgcm_tutorials (= code + all the tutorials)
421    o ecco, option to compute cost for total ssh (mean+anom)
422    o consistent with addition of ptracer and ssh in pkg/profiles
423    o profiles: adding ptracer and ssh
424    o testreport: change multi-test output-file name
425      (from output.txt.{name} to output.{name}.txt)
426    o profiles: now ok for mutli-tiles case
427    o seaice: add 4 parameters for different advection schemes for area,
428      (effective) seaice thickness, enthalphy, and snow height. Their default
429      is the standard parameter SEAICEadvScheme
430    o calc_gw:
431     - add cosFacU in zonal viscous flux (harmonic.visc.).
432     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
433       of tutorial_plume_on_slope.
434    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
435    o calc_gw: true flux-form, account for horizontal grid spacing.
436      update rotating_tank results, but not plume_on_slope (affected at
437      truncation level, 11 digits).
438    
439    checkpoint58l_post
440    o calc_gw:
441     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
442     - remove side-drag for now (need to fix it); update plume_on_slope results.
443     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
444    o commit code to make SST/SSS weights spatially variable
445      (based on either variable in-situ or variable initial T/S weights)
446    o pkg/ecco:
447      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
448        now based on horizontally varying weights wthetaLev, wsaltLev
449      * cost_averagesflags now returns year indices in addition to day, month
450      * sflux balance is performed on annual basis
451        (sflxumm, sfluxmm2, bal_sfluxmm)
452      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
453        including separate counting and multipliers
454    o pkg/rbcs
455      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
456    
457    checkpoint58k_post
458    o testreport:
459     - always build in dir. "build" (if not there, mkdir build instead of building
460       & running in input)
461     - run in dir run (if it exists), in build otherwise.
462     - call prepare_run (if input/prepare_run exists)
463     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
464    o pkg/exf modifications to interpolation and rotation routines for more
465       reasonable treatment of North Pole singularity: for tracers North Pole
466       value is set to northernmost zonal-mean value, for zonal velocity it is
467       set to zero, and for meridional velocity it is set to northernmost value.
468    o pkg/exf/exf_check_range.F
469     - add tile index to diagnostics and move stop statement to the very
470       end of the routine.
471    o pkg/diagnostics: (diagnostics_main_init.F)
472      define title of isomorphic variables according to the current config.
473    o pkg/thsice with pkg/seaice dynamics:
474    - fix domain of computation (interior only, required for exf) and do exchanges
475    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
476    o towards a standard way of dealing with multi-threading in MONITOR
477      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
478    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
479       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
480    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
481    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
482    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
483       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
484    o tracer advection:
485     - clean-up and simplify calc_common_factors.F
486     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
487       advection subroutine (but still not used within DST advection S/R)
488    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
489    
490    checkpoint58j_post
491    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
492      from file (collects calls previously in FORWARD_STEP)
493    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
494    o adjoint store dir. adjusted accordingly
495    o genmake2
496      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
497    
498    checkpoint58i_post
499    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
500      on wind stress (SEAICEstressFactor defaults to 1.)
501    o Total number of Timers is finite (<=40): comment out 2 non-essential one
502      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
503    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
504      on CS-grid: no longer loosing mass.
505    o exf & curvilinear-grid: no longer modify longitude xC & xG.
506    o pkg/ggl90: fix sloppy output and fix a bug
507    o pkg/seaice: added SEAICEuseEVPpickup parameter
508      - Set to false in order to start EVP solver with
509        non-EVP pickup files when using SEAICEuseEVP
510      - fix sign error in diffusion in seaice_calc_rhs
511    
512    checkpoint58h_post
513    * Modifications for bottom topography control
514      o replace hFacC by _hFacC at various places
515      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
516      o add non-self-adjoint cg2d_nsa
517      o update autodiff support routines
518      o re-initialise hfac after ctrl_depth_ini
519      o works for 5x5 box, doesnt work for global_ocean.90x40x15
520    * Adding verification for 5x5 box (4-layer) bottom topography control
521    
522    checkpoint58g_post
523    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
524       used for mean seasonal cycle, mean diurnal cycle); add an example
525       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
526    o pkg/ggl90:
527      - add parameter (minimum surface kinetic energy)
528      - fix bug (avoiding division by zero)
529    o couple pkg/thsice to pkg/seaice:
530      - modify advection in seaice to accomodate new scalar fields to be advected
531      - only muliDimAdection scheme work with seaice/thsice
532      - mapping of thsice-variables to seaice-variables, back and forth
533      - does not break the verification experiments, but does not give the
534        desired results either
535    o pkg/seaice
536      - make (default) second order advection a bit less confusing?
537    
538    checkpoint58f_post
539    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
540      to pkg/seaice):
541      - new routines thsice_map_exf and thsice_get_exf provide the interface
542      - add an additional formal parameter to thsice_solve4temp
543    o pkg/exf:
544      - add new fields wspeed, snowprecip (to be able to couple to thsice)
545      - correct Stefan-Boltzmann constant
546      - new parameter for longwave surface emittance
547      - separate some stuff from exf_bulkformulae into new routines  
548        exf_radiation, exf_wind
549      - add new parameters and constants: longwave emissivity for ocean, ice
550        and snow, evaporation parameters over ice
551      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
552        either wind from stress or stress from wind
553    o pkg/thSIce:
554    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
555    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
556       and THSICE_CALC_THICKN
557    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
558    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
559      to make debugging easier.
560    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
561    o pkg/bulk_force:
562      - clean-up comments and parameters ;
563      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
564    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
565      generate new output for test-experiment: aim.5l_cs.thSI
566    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
567      testreport accordingly
568    
569    checkpoint58e_post
570    o SEAICE_CGRID adjoint done
571    o R_STAR adjoint implemented.
572      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
573      * need to sort out init. of h0facc, etc.
574    o Make pkg/profile fully independent of ecco,cost, etc. stuff
575      to be able to use it in pure forward.
576    
577    checkpoint58d_post
578    o upgrade simple test-experiment to tutorial example:
579     step.1: duplicate the experiment and (step.2) will remove the old copy.
580      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
581      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
582      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
583      tutorial_global_oce_biogeo    <- copy of dic_example
584      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
585      tutorial_plume_on_slope       <- copy of plume_on_slope
586      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
587      tutorial_global_oce_optim     <- empty for now (David ?)
588      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
589     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
590    o correct a sign problem in cost_scat.F
591    o obcs and ptracers: fix boundary conditions for advections schemes
592      with larger stencil
593    o thsice adjoint: start
594    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
595      completeness
596    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
597      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
598    o ptracers adjoint:
599      * avoid extensive recomputatations
600      * fix missing re-init. of gptr (missed by TAF)
601    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
602      me to turn off the excessive output to STDOUT that this package produces
603    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
604      and add those terms in Vector-Invariant formulation.
605    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
606      if the control period (xx_hfluxperiod etc) is 0
607    o in profiles pkg, clean routines and fix details
608    o in ecco pkg, reading ssh data:
609      fix problem in case the model does not start at iter0=0
610    o fix mnc-pickup/restart for ptracers
611    o new package prifiles:
612      code to compute profile-based cost by Gael Forget
613      (modifs in ecco, ctrl, autodiff)
614    o Benign bug fix in initialization (spotted by M. Mazloff) of
615      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
616    
617    checkpoint58c_post
618    o adjoint: finish NLFS adjoint and provide reference output in
619      verification/global_ocean.90x40x15/results_ad_nlfs
620    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
621      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
622      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
623      with SEAICE_CGRID defined.
624    o move calendarDumps from "data" to "data.cal" and clean-up the code
625      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
626    o add useEXF & useCAL flags (for now, set in hard-coded way)
627    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
628      (were missing in NH mode, and wrong in quasihydrostatic mode).
629      waiting for Chris updated version of calc_gw to add those CALLs.
630    o fix bug in quasihydrostatic S/R ;
631      add a test for this option: global_ocean.90x40x15.qshyd
632    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
633      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
634    o add on/off flag useOffLine for package OFFLINE
635    o seaice:
636      - modify advection so that it works also on the C-grid
637      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
638        problem in multi-tile runs with C-grid
639      - add flags for clipping ice velocities and/or masking solver forcing
640      - fix drag (ocean on ice) formulation and a bug that caused noise in the
641        C-grid solver
642      - added a few comments to seaice_diffusion.F
643      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
644        are now exclusive)
645      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
646        required re-ordering the code a little:
647       + make DAIRN global variable (defined in SEAICE)
648       + move computation of the viscosities eta and zeta into a new separate
649         routine (because I need to recompute them in seaice_ocean_stress.F)
650    
651    checkpoint58b_post
652    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
653      update output.txt of exp. aim.5l_cs.thSI
654    o various mnc cleanups and improvements:
655      + shrink lookup tables by factor of ~4
656      + better error reporting when running out of lookup space
657      + able to handle longer path/file names (up to 500 chars)
658    o adjoint:
659      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
660      - TBD: "hidden" mom_vecinv recomp. in dynamics
661    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
662     (allow to differentiate between forcing components using new integer flags:
663      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
664     and add new flag to put Dissipation tendency out of Adams-Bashforth.
665    o ecco
666      - enable trend removal from SSH anomaly obs.
667    o adjoint
668      - a fix for PmEpR when #undef EXACT_CONSERV
669      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
670      - try to fix "hidden" recomp. in forward_step for NLFS
671        (NLFS seems broken sometimes after I checked it in)
672    o seaice:
673     - add c-grid version of the dynamic solver:
674       + three new routines that are the c-grid substitute lsr, dynsolver
675         and ostres
676       + put a few fields that were local to dynsolver into global common
677         blocks, so that I can move the computation of stresses etc into
678         seaice_lsr (saves coding but may break the adjoint).
679     - replace more hardwired parameters by runtime parameters
680     - add ice masks that mask the rhs of the implicit solvers where there
681       is no ice (commented out in seaice_dynsolver, because i am not sure
682       if this works properly), eventually this should replace the clipping
683       of ice velocities in seaice_dynsolver to +/-40cm/s.
684    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
685      include it only where its needed
686    o move balancing of fluxes before the call of external_forcing_surf
687    o seaice:
688      - correct units of turning angles (now they are really in degrees)
689      - move computation of GWATX/Y out of main routine into dynsolver
690      - initialize GWATX/Y in seaice_init
691    o Apply mask on Fresh-Water flux (needed for SSH forcing).
692      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
693    o seaice: add runtime flags for turning angles (default to zero)
694    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
695      and trend from exf forcing and ctrl control adjustments
696    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
697      (since checkpoint57x_post)
698    o change the default rotation period to 86164.s = the Earth rotation
699    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
700      and based on a reference stratification. Tested within hs94.cs-32x32x5.
701    o seaice advection: add code for choosing between the default (2nd order
702      central differences) and multiDim advection schemes provided by
703      pkg/generic_advdiff
704    o seaice:
705      - removed all references to SEAICE_GRID.h fields from
706        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
707        (cubed-sphere configuration will change a little)
708      - grid computations in seaice_init are obsolete now.
709      - cleaned up code a little so that is easier to read (hopefully).
710      - added new (better?) discretizations of default advection and diffusion
711        (turn on with SEAICEuseFluxForm)
712      - replace 1 in 3d global fields by kSurface in growth.F
713      
714    checkpoint58a_post
715    o seaice:
716      - bug fix in advect.F
717    o shelfice:
718      - separate shelfice load anomaly from pload (breaks with time
719        dependent forcing), => introduce constant field shelficeLoadAnomaly.
720        Its default is 0., but it may be computed more cleverly from (unknown)
721        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
722        done offline. A good approximation of the pressure load anomaly is
723        necessary to avoid large initial adjustment processes underneath
724        deep-reaching shelfice.
725      - small fix in ISOMIP shelfice_thermodynamics
726      - add more sophisticated thermodynamics of Hellmer (1989), this is
727        now the default
728      - give a few constants more intuitive names
729    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
730      if bulk formulae are used in long integration (especially EmPmR). Turn
731      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
732      if balancePrintMean, the imbalance that is substracted is printed to
733      STDOUT.
734    o fix bug (typo) in obcs_apply_eta.F
735    o add a new package shelfice which enables us to model the circulation
736      underneath shelf-ice with draughts of hundreds of meters.
737     - works
738     - to do: + include improved thermodynamics
739              + check whether kSurfC (from model/inc/SURFACE.h) can be used
740                instead of new field kTopC
741              + can we use topoFile, Ro_surf and existing code in ini_depth.F
742                instead of new field R_shelfIce and new code in ini_depth.F
743                and ini_mask_etc.F?
744              + adjust vertical mixing schemes?
745    o seaice pkg:
746     - add a cpp-flag to include a simple formula for a salinity dependent
747       freezing point of sea water at the surface
748     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
749       meridional stresses are now different (and hopefully correct)
750    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
751       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
752       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
753    o pkg/diagnostics: add options and parameters for regional-statistics
754       diagnostics ; define regions by reading a region-mask from a file
755       (might add other options later)
756    o pkg/bulk_force:
757     - add option and parameters to use AIM surface-flux formulae.
758     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
759       others forcing fields (defined in PARM05, parameter file "data") are loaded
760       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
761     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
762     - use the right EXCH call for uwind,vwind (to work on CS-grid).
763     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
764       and parameters (note: calcWindStress replaces .NOT.readwindstress).
765     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
766    
767    checkpoint58
768    o add "--embed-source" option to genmake2 which, when the supporting
769      tools can be compiled (as determined by genmake2) will turn on the
770      embed_files package which then embeds the entire MITgcm source code
771      (*.[fFhc] + Makefile) used for the build within the executable
772      - requested by CNH but off by default
773      - adds a paltry <9MB to the mitgcmuv executable in most cases
774      - only writes the output when useEMBEDSRC in eedata is true
775    o clean up 3-dim. relaxation codes:
776      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
777      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
778      * Thanks to Tom Haine for testing!
779    
780    checkpoint57z_post
781    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
782      affects output (@ truncation level) of exp. plume_on_slope ; updated.
783    o fix the pickup behavior for obcs in combination with ptracers
784    o fix a bug in ptracers_external_fields_load
785    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
786      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
787    o transfered surface NH pressure to eta field (if exactConserv).
788    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
789         and update lab_sea output.txt file.
790    o completing 3-dim. relaxation code: additional term
791         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
792      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
793      * At compile time, in "EXF_OPTIONS.h" set
794          #define  ALLOW_CLIMTEMP_RELAXATION
795          #define  ALLOW_CLIMSALT_RELAXATION
796      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
797          tauThetaClimRelax3Dim = 15552000.0,
798          tauSaltClimRelax3Dim  = 15552000.0,
799      * 3 cases:
800          1) Use a constant-in-time 3-dim. field
801          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
802          3) Real-time relax. to time-evolving prescribed field
803    o Adding Laplacian-type smoothness constraint on
804      initial and boundary (forcing) controls (ic, bc)
805      * enable at compile-time via
806        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
807      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
808      * Absolute scale somewhat unclear so far
809      * no area weighting was included since no other cost term does so far
810    
811    checkpoint57y_post
812    First step for a NLFS adjoint
813    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
814    o new init. routines for calc_r_star, calc_surf_dr
815    o still need to deal with ini_masks_etc
816    o testreport seemed happy
817    checkpoint57y_pre
818    
819    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
820    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
821    o add new offset feature to offline pkg (plus minor cleanup)
822    o cfc fixes for final year of integration
823    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
824      be in GCHEM_OPTIONS).
825    
826    checkpoint57x_post
827    o fix testreport Pb in multiple test experiment.
828    o cleanup our namelist syntax in verification:
829      - make it more F95 standards compliant (some work still needed)
830      - allows the vast majority of our tests to work with gfortran
831    o Non-Hydrostatic:
832     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
833     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
834    o Allow to apply AB on T,S rather than on AB(gT,gS):
835     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
836     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
837       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
838     - need a "clever" read_pickup to restart from the other AB formulation
839    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
840    o remove some unused variables (reduces number of compiler warnings)
841    o adjoint
842      * Disable useVariableViscosity for adjoint for time being
843        (there are a number of extensive recomputations)
844      * Initialize certain variables needed for adjoint
845    
846    checkpoint57w_post
847    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
848                 fix the singleCpuIO RS version of MDSWRITEFIELD
849       and add a WARNING if using globalFiles=T with multi-processors.
850    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
851      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
852    o tracer advection scheme:
853      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
854       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
855       was not very convenient).
856      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
857       (further tests needed for the implicit DST & Flux-Limiter schemes).
858    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
859      and sRef for convenience, handy, when you want to initialize
860      ptracers in a large domain with a constant non-zero value. Also,
861      untangle ptracers_init.F a little.
862    
863    checkpoint57v_post
864    o change dome exp. to use variable viscosity in side-drag terms.
865    o remove all the files from the cfc_offline test since they are now
866      incorporated into tutorial_cfc_offline which has been producing
867      identical results for a few days of testing
868    o add new parameter: sideDragFactor to enable half-slip-side BC
869      and change side-drag S/R to use viscosity from mom_calc_visc
870      (can switch back by setting sideDragFactor=0.); affects results at
871      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
872       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
873    o vorticity & strain are now computed without masking, to account for
874      no-slip-side BC in variable viscosity calculation ; mask is applied
875      anyway later on, before computing advection/coriolis terms.
876    o modify exp4 to test new obcs support for reading from external files
877      and for passive tracers
878    o fix behavior of ptracers_monitor when monitor output is written to a
879      netcdf-file; still not independent of monitor.F (writes in the same
880      file).
881    o change default value of tRef (put a uniform, meaningful value for ocean
882      & atmos) and initialize sRef (was missing, as Martin mentioned).
883    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
884      to be proportional to enstrophy dissipation length.  Thus,
885       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
886      This is now consistent with Smagorinsky and with the manual.
887    
888    checkpoint57u_post
889    o OBCS and PTRACERS: add open boundary support for passive tracers
890      - either use homogenous (pseudo) v.Neumann conditions or prescribe
891        OB-values from file; this is not different from the way theta and salinity
892        are treated
893      - however, Orlanski-radiation conditions are not supported, and the model
894        will stop if you use pTracers and Orlanski at the same time.
895      - beefed up the rountine obcs_external_fields_load: now only those open
896        boundary values are overwritten with values from files for which there
897        are really files, otherwise the OB-fields remain untouched. This makes
898        it possible to use different OBs at different ends of the domain (as
899        with EXF)
900    o reduce number of exch calls in shap_filt (s2).
901    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
902      truncation level) 4/5 MLAdjust test results (11&12 digits match).
903    
904    checkpoint57t_post
905    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
906    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
907      same truncation, independent of the face number: affects affects several
908      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
909    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
910      note that biharmonic viscosity + no-slip was not tested in any experiment.
911    o fix bug in non-linear free-surf side-drag ; generate new output for
912      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
913    o make mnc honor the writeBinaryPrec flag for most kinds of output
914    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
915    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
916      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
917    o add brackets in multi-terms sum to get same truncation, independent of
918      the face number (manage to get exactly same value of gU,gV at the cs-edge)
919      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
920    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
921      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
922      a maximum grid-scale Reynolds number.  Also, changes all length calculations
923      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
924      Suggested values of viscosity parameters found in mom_calc_visc.
925      Many new viscosity diagnostics available.
926    
927    checkpoint57s_post
928    o Add clearing-house for viscosity calculations, mom_calc_visc and
929      correct numerous bugs in LeithD and Smagorinsky discretizations.  
930      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
931      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
932      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
933      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
934      The Strain-Tension form is now called with useStrainTensonVisc=.true.
935      ViscAhStrain and viscAhTension are now retired.
936    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
937    o In response to JMC's bug report, genmake2 now ignores any soft-links
938      that it finds in the *current* directory when searching for files.
939      Soft-links found in any other source directories will still work as
940      they did before.
941    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
942      a C routine to unlimit the stack size
943    o mnc-ify pkg/aim snapshot vars
944    o mnc-ify pkg/land as requested by Daniel
945    o various changes to mnc including:
946      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
947      - output can now be grouped so that all files within a group
948          change the ITER portion of their names in lock-step together
949      - can now read ("global") PER-FACE (in addition to PER-TILE) files
950          and works with both EXCH1 and EXCH2 (but needs more testing)
951      - writing works for all verification test cases w/ g77 on Linux
952    
953    checkpoint57r_post
954    o make MNC variable initialization happen earlier
955    o add diagnostics for (almost) each term of the momentum Eq.
956    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
957    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
958    o remove MINIMAL_TAVE_OUTPUT option ;
959      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
960    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
961      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
962    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
963    o add time-dependent SST, SSS control
964    o cost terms in ecco/ modularized (new cost_generic.F)
965    o cost_averages routines are modularized (new cost_averagesgeneric.F)
966    o new infrastructure for seaice model vs. obs misfits in seaice/
967      * driver from the_main_loop.F is seaice_cost_driver.F
968      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
969      * gradient check in Exp. 6a of natl_box_adjoint/
970    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
971      (see README file)
972    
973    checkpoint57q_post
974    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
975    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
976      - bug was reported by Jean-Michel and Ian Fenty
977    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
978      update exp. cpl_aim+ocn output.
979    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
980      Needed for high-res. runs with large global files
981      to be able to limit tapelev size
982    o Changed some tests for adjoint:
983      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
984      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
985      * global_ocean.90x40x15/ back to default 3-level checkpointing
986    o Modifications to enable scripted COMMON to MODULE conversion
987      * verification/OpenAD/code/ has necessary scripts and description;
988      * converts, compiles and runs successfully;
989    
990    checkpoint57p_post
991    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
992    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
993      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
994    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
995    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
996      (was already the case for dissipation with mom_vecinv,
997       and also the case for grad.PhiHyd when staggered-timeStep)
998      This will allow to put dissipation out-off the AB time-stepping.
999     Unfortunately, affects truncation error. Update output of exp. that "fails"
1000      (cg2d matching number) and leave the others for later: front_relax(10),
1001      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1002      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1003    
1004    checkpoint57o_post
1005    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1006      (2) its ready to be documented during the 20050801 DocFest
1007    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1008      for ideal_2D_oce and lab_sea on linux_ia32_g77
1009    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1010      in global1x1_tot/code_seaice_adj to access indices 32, 33
1011      (worth another tag)
1012    
1013    checkpoint57n_post
1014    o adding precip control xx_precip 32
1015    o adding swflux control xx_swflux 33
1016    o Replacing 10 forcing penalty cost routines by 1 generic.
1017    o Implementing partitioning in time-mean and variable adjustment
1018      for atmos. state.
1019    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1020    o in natl_box_adjoint:
1021      * updated exp 1 to 10
1022        (but does not have time-mean vs. variable split results yet)
1023    o updated global1x1/*_seaice_adj/
1024      to incorporate latest changes
1025    o enable useSingleCpuIO for mdsio vector routines
1026      (applies in particular to tapelev I/O)
1027    o removed inefficient K-loop in all active_file*control*.F
1028    
1029    checkpoint57m_post
1030    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1031      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1032    o pkg/exch2: filling of face-corner halo regions is optional
1033      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1034    
1035    checkpoint57l_post
1036     tag before updating tutorials (pre-release-2)
1037    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1038       for output and interpolation of input fields onto model grid)
1039    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1040       Affects results of exp. rotating_tank ; update output.txt.
1041    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1042          and taking the square quantity and/or using a fraction-weight field.
1043    o fix aim_diagnostics_init.F mate numbers.
1044    o add mnc output capability to diagnostics/diagstat and update
1045      our cvsignore files for the ACSII output generated
1046    
1047    checkpoint57k_post
1048    o lab_sea now uses diagnostics package and provides a suite of
1049      new EXF diagnostics output.
1050    
1051    checkpoint57j_post
1052    o exf
1053      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1054        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1055        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1056      * extended diagnostics output
1057        - now includes all EXF variables
1058        - hs, hl moved to common block
1059        - separate S/R for diagnostics, called after ctrl vector is added
1060        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1061        - EXFqnet contains true Qnet (i.e. includes qsw)
1062      * updated verif. lab_sea, global_with_exf
1063      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1064        to ensure that diagnostics sees a true EXFqnet
1065    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1066    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1067      several times with different frequencies.
1068    o mnc-ify the thsice package as requested by Daniel Enderton
1069      - the monitor--MNC output needs work
1070      - many attributes need to be added (most are currently blank)
1071    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1072      - many attributes need to be added (most are currently blank)
1073    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1074    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1075    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1076      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1077         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1078    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1079     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1080    
1081    checkpoint57i_post
1082    o Diagnostics package was changed: diagnostic allocation is now deactivated
1083      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1084    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1085      add 1rst Order upwind vertical Shear.
1086    o add a quick fix for A/B checkpointing in OFFLINE mode
1087    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1088      end-run around the C/Fortran linking horror in eesup/src/timers.F
1089    o added pkg/runclock: allows user to terminate run based on wall clock
1090    o added non-hydrostatic scaling parameter: nh_am2
1091    o pkg/my82: futile attempt to make results compiler-independent by adding
1092      some "_d 0", etc. no effect.
1093    o for mnc output, fill the 'T' coordinate var with myTime and create a
1094      separate 'iter' variable for iteration count
1095    o pkg/diagnostics:
1096      add new capability: output of Global/Regional & per-level statistics ;
1097      tested against monitor output (including land & thSIce) on various exp.
1098    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1099    
1100    checkpoint57h_done
1101      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1102      data.diagnostics, data.gchem, data.ptracers) is done.
1103    
1104    o pkg/diagnostics: prepare for Global/Regional statistics.
1105      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1106    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1107      and rename it: DIFFERENT_MULTIPLE
1108    
1109    checkpoint57h_post
1110    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1111    o pkg/diagnostics: change output frequency, now in seconds (instead
1112      of Nb of iterations). This requires to change data.diagnostics.
1113    checkpoint57h_pre
1114    
1115    o in mnc, let the user create the output dir if both mnc_outdir_date
1116      and mnc_outdir_num are false
1117    o add fflags() to pkg/diagnostics which allows one to specify, on a
1118      per-file basis, the file precision [default behavior is unchanged]
1119    o added diagnostics to pkg/kpp, including computation of mixed layer
1120      depth based on a temperature/density criterion
1121    o updated verification/natl_box to test the new pkg/kpp diagnostics
1122    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1123    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1124    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1125      not mnc -- this mistake was found by JMC and is now corrected
1126    
1127    checkpoint57g_post
1128    o add Adams-Bashforth 3rd Order time stepping:
1129      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1130      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1131    checkpoint57g_pre
1132    
1133    o make lambda[Theta,Salt]ClimRelax spatially varying
1134      (default remains spatially uniform constant based on tau)
1135    o added new control variables
1136      * init. uVel, vVel, etanN
1137      * lambda[Theta,Salt]ClimRelax
1138    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1139      (suggested by G. Forget)
1140    
1141    checkpoint57f_post
1142    o add parameter "baseTime" = model base time = time at iteration zero
1143      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1144      account for baseTime shift
1145    o move Coriolis arrays from PARAMS.h to GRID.h
1146    checkpoint57f_pre
1147    
1148    o mnc-ifying the seaice package
1149    o introduced an alternative length scale calculation for use in the limiting
1150      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1151    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1152    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1153      as well as grad(vort3).  Made it compatible with both approximate form
1154      for the cubed sphere and full form of these gradients.  Added flag
1155      useFullLeith to select between approximate and full form.  
1156    o add "d0" in getcon.F to reduce differences between compilers/platforms
1157      update output.txt of exp. fizhi-gridalt-hs
1158    o change port_rand funtion to allow to set the seed.
1159    o fix obscure MNC bug involving conversion between reals and integers
1160      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1161        new version is now more standards-compliant
1162    o adjoint-related modifications
1163      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1164      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1165      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1166    
1167    checkpoint57e_post
1168    o Adding eddy stress controls a la Ferreira et al.
1169    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1170    
1171    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1172      update output.txt of exp. fizhi-gridalt-hs
1173    o add more "Z" dimensions and associated coordinate vars to MNC
1174    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1175    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1176      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1177      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1178      months and years.  Requires pkg/cal.
1179    o diagnostics: add pickup functionality
1180      - off by default for backwards compatibility
1181      - current version only uses MDSIO -- MNC will be added
1182    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1183    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1184    
1185    checkpoint57d_post
1186    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1187    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1188      output from the diagnostics package
1189    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1190    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1191      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1192    o add coordinate variables to the MNC output from the diagnostics package
1193    o change MNC-flags default value: true when useMNC=TRUE
1194    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1195      the ability (off by default) to read the grid information using MNC
1196    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1197    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1198    o do snap-shot diagnostics at the middle of the time-interval (instead of
1199      at the end).
1200    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1201      new test for AIM with thSIce + slab-ocean
1202    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1203    o move state variable diagnostics to the beginning of the time step ;
1204      (note: still needs some work specially for snap-shot diagnostics)
1205      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1206    
1207    checkpoint57c_post
1208    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1209    o generate new output.txt files on faulks with g77 & the new -ieee option
1210    checkpoint57c_pre
1211    
1212    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1213      update output.txt of exp. global_ocean.90x40x15
1214    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1215      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1216    o add saltFlux(+File) forcing capability with periodicExternalForcing
1217    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1218    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1219    o improvements for the MNC output from DIAGNOSTICS:
1220      - correct handling of the unlimitied dimension
1221      - all dims now have associated coordinate variables
1222      - variables located at U, V, and Corner ("Z") points are now written
1223        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1224        *all* data points are output
1225    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1226    o added pkg/seaice/seaice_monitor.F
1227    o mdsio_readfield.F can now read files visible only to master MPI process.
1228    o pkg/seaice: some test code for ice-modified ocean stress
1229    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1230      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1231      spurious negative numbers for precipitation and humidity.  Will cause
1232      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1233    o pkg/ctrl/
1234      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1235        May be enabled via doPackDiag
1236      *  introduce z-scaling of
1237         + gradient (doZscalePack) and
1238         + control (doZscaleUnpack)
1239    o pkg/mdsio/
1240      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1241      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1242    
1243    checkpoint57b_post
1244    o simplify options in diagnostics_fill arguments (remove weird combinations)
1245    o fix MNC coordinate variables so that they now contain per-face index
1246      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1247      general, EXCH2 grids are only aligned to a "local" coordinate system
1248    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1249    o Implement instantaneous output within pkg diagnostics:
1250      setting a negative frequency in data.diagnostics produces
1251     "snap-shot" output (as opposed to time-average if freq > 0)
1252    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1253      NOTE: change ptracer diagnostics name: use 2 characters to work with
1254            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1255    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1256      becomes the coordinate variable for the 'T' dimension
1257    o add CF-style coordinate variables to MNC
1258      - just a first cut:  numbers are meaningless on the cubesphere and
1259        missing along the T axis but otherwise it works!
1260    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1261    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1262    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1263      this is based directly on what the model compute, so that the content of
1264      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1265    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1266    o clean up build options files for SunOS, in particular
1267      - remove -traditional from xmakedepend
1268      - change -xarch=v9 to -xarch=native for f77
1269      - restore use of make (not gmake)
1270      - add CC=gcc if using g77
1271    o changes per discussion of AM, JMC, & EH3 today:
1272      - move redundant "grid" variables out of "state" -- in preparation of
1273        creating proper CF-style coordinate variables and in recognition
1274        that any/all grid variables can be easily copied (eg. w/NCO) from
1275        the grid files into any of the other NetCDF files
1276      - *always* output grid variables with MDSIO (this will eventually be
1277        changed)
1278      - output MNC grid file if useMNC is true
1279    o every instance of _END_MASTER() has been found and replaced with
1280      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1281      preprocessors
1282    o re-arrange diagnostics pkg initialisation:
1283     - allow each package to extend the available diagnostics list
1284     - add some checking and fix small problems (multi-threaded, ...)
1285     - new S/R diagnostics_fill (replace fill_diagnostics):
1286       look through the short list of active diag. (instead of the long list)
1287       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1288    
1289    checkpoint57a_post
1290    o this set of changes restores TAMC compatibility
1291      tested for global_ocean.90x40x15 adjoint on trough
1292      (what a pain)
1293    
1294    checkpoint57a_pre
1295    o some modifs in tools/build_options for sunos
1296    o call ctrl_pack for ctrl at end for optimcycle=0
1297    
1298    checkpoint57
1299    o add horizontal bi-harmonic viscosity for vertical velocity
1300      - new parameter viscA4W (defaults to viscA4)
1301      - affects only non-hydrostatic code
1302      - to be done: no-slip lateral boundary conditions
1303    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1304    o implement Implicit Vertical advection for pTracers
1305    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1306      (implemented also for implicit vertical diffusion & advection)
1307    o OBCS: extend application of tracer open boundary conditions
1308      to a strip beyond the boundary of width Olx/Oly
1309    o add call monitor to TAF set of required calls (flow directives)
1310      and include in natl_box_adjoint
1311    o untangle a few ifdefs related to cost, ctrl, autodiff
1312      untangel a few ALLOW_ECCO_OPTIMIZATION
1313    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1314      (theta2, salt2 in ecco_cost_weights)
1315    
1316    checkpoint56c_post
1317    o OBCS as control variables
1318      - update ctrl_ad_diff.list, obcs_ad_diff.list
1319      - remove balance of obcs controls from default
1320      - fix index bug nobcs in ctrl_init
1321      - fix dummy fields filen in ctrl_pack
1322      - add dummy weights for obcs
1323    o lsopt: comment out fort.94 output
1324    o optim:
1325      - remove unnecessary header files
1326      - adjusted namelists
1327      - add xerbla.F to Makefile
1328    o exf:
1329      - multiple modifications of exf_check_range
1330      - unit change in exf_init_runoff from [m/year] to [m/s]
1331    o mdsio:
1332      - i/o-vector change debugLevel from debLevA to debLevB
1333    
1334    checkpoint56b_post
1335    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1336      is called from DO_THE_MODEL_IO
1337      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1338      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1339      - clean up PTRACERS_WRITE_TIMEAVE a little
1340    o add another verification experiment that tests both the cfc-pkg and
1341      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1342      reactive tendencies treated inline with regular timestepping
1343    o testreport previously did a lousy job of comparing small numbers, so
1344      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1345      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1346      testreport.
1347    o ptracers_monitor: bug fix for MPI
1348    
1349    checkpoint56a_post
1350    o GCHEM: finish reorganizating the package
1351      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1352        (introduces another 3D-array for each passive tracer, but only if
1353        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1354        gchemTendency is not needed because the timestep is done separately)
1355      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1356      - GCHEM is now---more or less cleanly---separate from PTRACERS
1357      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1358        so clear to me how that should be done in a general way.
1359    o CFC: improve formatting of output in CFC_ATMOS
1360    o PTRACERS:
1361      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1362        that ALL experiments with ptracers enable can be checked. This makes
1363        GCHEM_MONITOR obsolete.
1364      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1365        monitorFreq
1366      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1367    o add PTRACERS (PTR0[1-5]) to testreport output
1368    o exf_check_range:
1369      * default changed to .TRUE.
1370      * will check values for niter0 if debLevA, every timestep if debLevB
1371      * STOP in exf_check_range if 'out of range'
1372      * range chosen generous to allow for potential extema
1373      TBD: a version with stricter range
1374           permitted range would be runtime parameters
1375    o GMredi:
1376      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1377      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1378      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1379    o GCHEM:
1380      - move call to GCHEM_FORCING_SEP, so that it is now called before
1381        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1382      - introduced a useGCHEM runtime flag and applied it everywhere.
1383      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1384        this flag is now only visible within GCHEM-pkg routines.
1385      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1386        be replaced by a 3D array that is computed before thermodynamics; for
1387        this, the tracer ID iTracer had to be included into the parameter list
1388        of ptracers_forcing
1389      - set up forward_step to call gchem_forcing, that will replace
1390        gchem_forcing_int in ptracers_forcing
1391      - cleaning up
1392    o small cleaning of exch2: remove files that are also in eesupp/src
1393    
1394    checkpoint56
1395    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1396    o mnc: cleanup "full" files--fixes out-of-memory problem
1397    o ECCO-GODAE
1398      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1399      * fully merged and updated from SIO code
1400        windstress sign change affects
1401        - exf_inscal_[u/v]stress
1402        - sign of xx_tau[u/v] adjustments
1403        - signs in cost_scat
1404      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1405      * natl_box_adjoint updated and compressed
1406      * 2-level checkpoint switch added
1407        (tested in EXP. 1 of natl_box_adjoint)
1408      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1409    o SVD
1410      * first complete, non-hacked version for SVD calculations
1411      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1412        performed via direct access files admtlm_vector.it????
1413        (via ctrl_[un]pack)
1414      * optimcycle is used for ARPACK iteration counter
1415        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1416      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1417        and add linear transforms where necessary
1418      * controls are initial/final SST, SSS (can be extended; need to check
1419        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1420    o mdsio: filename info to both stderr, stdout
1421    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1422      from sign change
1423    
1424    checkpoint55j_post
1425    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1426      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1427    o add consistent build directories and .cvsignore files to verification
1428    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1429    o make all subroutines 30 or less characters in length for certain older
1430      compilers to work (a thorough search only turns up two routines in
1431      pkg/ptracers)
1432    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1433      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1434    
1435    checkpoint55i_post
1436    o change arrays for total vertical diffusivity (2.D if explicit,
1437      3.D if implicit) ; each ptracer uses its own background value.
1438    o added mnc/NetCDF output capability to ocn_compon_interf
1439      - added bits to verification/cpl_aim+ocn so that it can run on
1440        ITRDA and other clusters without the mpirun "-wd" option
1441    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1442      configuration
1443    o give MNC the ability to create additional files rather than
1444      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1445      - the default is just less than 2GB which is a practical limit
1446        on many systems
1447    o Compute the non-local term using either KPP vertical diffusivity (=default)
1448       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1449    
1450    checkpoint55h_post
1451    o add verification test "vermix"
1452    o remove all the *_ioinc flags and replace with the single global
1453      outputTypesInclusive flag
1454    o allow to set a vertical profile of vertical diffusivity for T & S
1455    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1456    o useMNC moved from data.mnc to data.pkg
1457    
1458    checkpoint55g_post
1459    o Renaming carbon AD experiments to comply with testreport conventions
1460    o Updating adjoint of Held-Suarez hs94.1x64x5
1461    o Fixing directives for non-ECCO forward_step, after ECCO directives
1462      have been fixed to avoid recomp. of do_oceanic_phys
1463      Works well for global_ocean.90x40x15,
1464      but recomp. issue remains for carbon
1465    o Updating adjoint output for natl_box_adjoint after
1466      pkg/ecco has been modified (see taga c55d_post)
1467    
1468    checkpoint55f_post
1469    o rename to timeave_init_fixed
1470    
1471    checkpoint55e_post
1472    o some delicate re-shuffle of store directives to avoid one
1473      extra call of do_oceanic_physics
1474      affects ecco_the_main_loop.F, do_oceanic_physics.F
1475      checkpoint_lev1_directives.h
1476    o NB: this may break global_ocean adjoint temporarily,
1477      but it is clear how to fix it. Will do later, need this now.
1478    
1479    checkpoint55d_post
1480    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1481    o ecco_cost_weights is modified to 1x1 runs
1482    o modifs to allow observations to be read in as
1483      single file or yearly files
1484    o enable to read exf forcing fields as either
1485      single file or yearly files (flag useExfYearlyFields)
1486    checkpoint55d_pre
1487    
1488    o switch between 2-level and 3-level checkpointing
1489    o add ability of MNC to write local and "partial" (eg. 2D slices where
1490      the full 3D field is never actually stored) arrays to NetCDF files
1491      with the correct (that is, the complete multi-dimensional) set of
1492      array indicies
1493      - used in mom_vecinv() to write the diagFreq output
1494      - tested (demonstrated) in verification/aim.5l_cs
1495    o further mnc-ification
1496      - add verification/lab_sea to the list with mnc setups
1497      - fix undefined mnc v-names in cd_code
1498      - add kpp to mnc output (both snapshot and timeave)
1499    o non-hydrostatic code
1500      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1501        in calc_gw.F
1502      - defaults to viscAh
1503      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1504        friction or Leith) in non-hydrostatic mode, as long as there is
1505        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1506    o pkg/cost
1507      extend simple cost functions to treat time mean quantities
1508      (T,U,V) via cost_accumulate_state from cost_tile
1509    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1510        be 2 times larger than the minimum size the advection scheme requires.
1511        now get a perfect conservation of salt in advect_cs test-exp (updated)
1512    o GGL90 (Gaspar's TKE mixed layer)
1513      - add horizontal diffusion of TKE, requires exchanges in
1514        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1515        default. In OPA there is no horizontal diffusion of TKE but the
1516        mixing coefficients are computed from a horizontal average of TKE of
1517        6 points or so. I think that diffusion has a little more physical
1518        justification.
1519      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1520        was in vain)
1521      - mask tke-variable in ggl90_init
1522    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1523    o fix biharmonic diffusion on CS-grid.
1524    o more obcs stuff
1525      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1526        for reading boundary values. This routine is called from
1527        obcs_prescribe_read
1528      - updated obcs_check
1529      - changed sponge layer relaxation parameter units for days to seconds
1530      - turned off sponge layer by default
1531      - changed argument list of OBCS_CALC to myTime+deltaTclock
1532      - fixed about 35 bugs in obcs_external_fields_load
1533    
1534    checkpoint55c_post
1535    o obcs stuff
1536      - new runtime flags useOBCSprescribe, useOBCSbalance
1537      - re-arranged obcs_calc
1538      - moved exf_getobcs to obcs_prescibe_read
1539        obcs_prescibe_read is called after ORLANSKI stuff
1540        and independent of it (executable can contain all).
1541      - updated obcs_check
1542      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1543        These may be necessary only if tangential velocities are
1544        prescribed at OB, not sure, needs testing.
1545    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1546      which simplifies the calls and passes the ifc check-bounds test
1547    
1548    checkpoint55b_post
1549    o add a 2D scalar, Z location, exchange_2 routine.
1550    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1551      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1552      affects advect_cs results (for the wrong reason): update output.txt
1553    o use a more standard discretization for biharmonic viscosity ;
1554     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1555      affects results of dome set-up: update output.txt
1556    o fix gad_advection.F (CubedSphere part), back to version 1.23
1557    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1558    
1559    checkpoint55a_post
1560    o merged code to
1561      * prescribe/read time-dependent open boundaries
1562        (works in conjunction with exf, cal)
1563      * sponge layer code for open boundaries
1564      * each boundary N/S/E/W now has its own CPP option
1565        (healthy for the adjoint)
1566    
1567    checkpoint55
1568    o up-to-date adjoint of previous breaks
1569      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1570      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1571      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1572      - carbon: * remove tr1-related adjoint verification
1573                * add ptracer as control variable
1574    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1575      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1576    
1577    checkpoint54f_post
1578    o in verification/carbin/ remove experiment related to
1579      ALLOW_PASSIVE_TRACER (array tr1 etc)
1580      code_ad/ input_ad/ results_ad
1581    
1582    o add two new packages
1583      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1584        + subject to optimization (memory)
1585      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1586        + subject to reordering (many GOTOs in the original code)
1587        + so far opps is called for every (i,j) point, and then operates in
1588          the vertical; one may want to reorder the scheme in order operate in
1589          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1590          fields)
1591    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1592      - all verification tests compile and run with linux_ia32_g77
1593      - defaults are compatible with current input files--nothing
1594        should change if you were not previously using MNC
1595      - MNC output has been added in numerous places (eg. timeave)
1596        but there are still a few writes not yet do-able with MNC
1597        (this is in progress)
1598      - flags now allow for either/or/both use of MDSIO and MNC and
1599        documentation will soon follow
1600      - numerous small formatting cleanups for ProTeX
1601    o add version info (via BUILD_INFO.h) to MNC and stdout
1602    
1603    checkpoint54e_post
1604    o add two new packages
1605      - pp81 (Packanowski and Philander, 1981), Richardson number and
1606        stratification dependent mixing
1607      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1608      - these scheme operate in a similar manner as KPP (without ghat, of
1609        course), however there is only one diffusivity that is used for both
1610        temperature and salinity (and passive tracers)ç
1611    o add offline package
1612    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1613      provided by Stephanie Dutkiewicz
1614    o genmake2: add ability to search for C compilers and cleanup test output
1615      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1616    
1617    checkpoint54d_post
1618    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1619    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1620      leading to additional shift by 5 days each year of integration
1621       (i.e. leading to considerable offset over the years)
1622    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1623    o start with no AB and no initial filtering (staggerTimeStep):
1624      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1625    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1626      (external loading & cpl import/export stay in forward_step.F)
1627    o update coupling interface to work with new staggerTimeStep
1628    o change MDSIO ptracers_pickup.
1629    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1630    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1631    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1632    
1633    checkpoint54c_post
1634    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1635      this affects (truncation error) output.txt of test-exp:
1636       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1637    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1638    o change Qnet to always be the net heat flux, (+upward).
1639      affects (truncation error) output of natl_box exp.: updated
1640    o define the max number of passive tracers in PTRACERS_SIZE.h
1641    o start to test mnc routinely in exp0
1642    o add sea-ice loading (sIceLoad) as a new forcing field.
1643    
1644    checkpoint54b_post
1645    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1646       impressive on Altix and Opteron systems)
1647    o diagnostics can now write NetCDF files through the mnc package
1648    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1649    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1650    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1651      affects (truncation error) output of lab_sea & natl_box exp.: updated
1652    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1653    
1654    checkpoint54a_post
1655    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1656    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1657    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1658    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1659      + internal_wave (shift in writing cg2d_ini_res)
1660    checkpoint54a_pre
1661    
1662    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1663      - modified verification/lab_sea and natl_box_adjoint accordingly
1664    
1665    checkpoint54
1666    checkpoint53g_post
1667    o prepare splitting of thermodynamics: store convect.counter in common block
1668    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1669      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1670    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1671    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1672    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1673    o restore adjointability
1674    
1675    checkpoint53f_post
1676    o modifications that affect AIM experiment results (update output.txt):
1677      - no advection of S at top interface Nr (pkg/generic_advdiff)
1678      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1679    o AIM pkg:
1680      - include stability function into surf.Flux derivative relative to Tsurf
1681      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1682    
1683    checkpoint53e_post
1684    o merged cylindrical coord configuration
1685    o added rotating_tank experiment
1686    checkpoint53e_pre
1687    
1688    checkpoint53d_post
1689    o faulks upgraded: re-generate output.txt that have changed:
1690       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1691    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1692    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1693    o added Sadourny discretization of Coriolis
1694      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1695      - re-enabled use of omega3 (useAbsVorticity)
1696    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1697      vector-invariant equations
1698      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1699    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1700      hopefully without new bugs
1701      - still to do: biharmonic friction for non-hydrostatic w
1702    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1703    o regenerated output for global_ocean_ebm (using -ieee)
1704    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1705      of mom_common/
1706      - simple re-arrangement of instructions within computing loop
1707    checkpoint53d_pre
1708    
1709    checkpoint53c_post
1710    o new version of coupler for AIM+thSIce and Ocean models
1711     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1712     - land: change Evaporation of snow
1713     - aim with thSIce: fix bug in snow-precip.
1714    o changes to calc_gw.F
1715     - bug fix for w^2 term near the bottom boundary
1716     - (hopefully) improve the lateral slip boundary condtions for use with
1717        partial/looped cells
1718      - because the bug fix changes two verification experiments anyway (exp5
1719        and plume on slope), change the lateral boundary condition from half slip
1720        to the value of no_slip_sides
1721    o ebm package wasnt quite up to the parallel task. Fixed that.
1722    o Adjoint of EBM package + verification
1723      * TLM OK
1724      * ADM not sufficient accuracy yet (needs further testing)
1725    
1726    checkpoint53b_post
1727    o Commiting new energy balance model to repository
1728      * package is pkg/ebm
1729      * verif. is verification/global_ocean_ebm
1730      * references are in ebm_driver.F
1731    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1732    C        Global thermohaline circulation. Part I:
1733    C        Sensitivity to atmospheric moisture transport.
1734    C        J. Climate 12(1), 71-82
1735    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1736    C        Global thermohaline circulation. Part II:
1737    C        Sensitivity with interactive transport.
1738    C        J. Climate 12(1), 83-91
1739    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1740    C        Destabilization of the thermohaline circulation
1741    C        by atmospheric eddy transports.
1742    C        J. Climate 7(12), 1870-1882
1743    o Will need long integration testing.
1744    checkpoint53b_pre
1745    
1746    o created pkg/mom_common in preparation for variable viscosity code
1747    o renamed and split ini_mnc_io
1748    o pkg/land: only liquid water can diffuse or run-off
1749    o AIM using land: soil wetness availability account for snow
1750    o added printMapIncludesZeros to EEPARMS namelist
1751    
1752    checkpoint53a_post
1753    o restore TAMC compatiility for exf_constants.h
1754      (no usage of _d in .h)
1755    o Additional storing in KPP in an attempt to fix
1756      TAMC problem with adjoint of KPP code.
1757      (no success...)
1758      Identical code works fine with TAF.
1759    o Fixed verification/natl_box_adjoint experiments.
1760      Initial conditions for Experiments 4 and 5 are now
1761      set to "SEAICE_initialHEFF=0", which is more reasonable,
1762      and hence gives results closer to that of Experiment 2.
1763      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1764    
1765    checkpoint53
1766    o stable checkpoint with up to date adjoint
1767      TLM tests only run for 1st grdchk at the moment. Its unclear if
1768      this is a code problem or a problem with resetting code for g_
1769      variables that is being autogenerated wrong.
1770      Otherwise:
1771       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1772       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1773         are both still in chaos following their security messes.
1774    
1775    checkpoint52n_post
1776    o various build (mostly genmake2) changes including:
1777      - ability to build/run more easily within Cygwin and MacOS X
1778      - more complicated Makefiles with a stronger dependence on Gnu Make
1779    o pkg/seaice modifications
1780      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1781        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1782        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1783      - changed proxy for geostrophic velocity and updated
1784        verification/lab_sea/results/* accordingly
1785      - removed ADI dynamic solver from pkg/seaice
1786      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1787        they caused a segmentation fault under certain circumstances
1788      - removed unused field WATR
1789    o bug fix in exf-package:
1790      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1791         now reflect that.
1792    o small fixes in the cal-package:
1793      - set reference date to first of January for the 'model'-calendar
1794      - failing of cal_CheckDate in cal_FullDate now actually results in a
1795        warning
1796    o small modifications in exf-package to increase flexibility:
1797      - change climtempfreeze from a constant to a runtime parameter that
1798        is specified in data.exf_clim (default = -1.9)
1799      - introduce runtime parameter windstressmax (default = 2.0) that is
1800        specified in data.exf
1801    o fix in pkg/thsice:
1802      - update Evap (Tsf changes) to be consistent with Latent heat flux
1803      - maintain snow precipitation unchanged (even if Tsf >=0).
1804     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1805    
1806    checkpoint52m_post
1807    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1808      this does not change any of the results, because myIter=0 in swfrac always
1809      lead to jwtype=2 (the default anyway), but the call makes little sense
1810      as a default
1811    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1812    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1813      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1814    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1815    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1816    o extending useSingleCpuIO option to work with new exch2 I/O format
1817      - old-style, missing-tile I/O is still accessible by defining CPP
1818        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1819    o monitor package can write to NetCDF files and/or STDOUT
1820    o fix re-definition bug in MNC_GRID_INIT_ALL()
1821    o doc/api_reference added
1822      - a framework for building an API Reference Manual using all
1823        the "protex" comments embedded in the code
1824      - see pkg/generic_advdiff, pkg/mnc for examples
1825    o MNC:
1826      - make myThid the last argument for all subroutines
1827      - new default for the grid files: NO halos
1828      - add useMNC and other run-time flags
1829      - separate per-file-group handling of the unlimited dimension
1830      - early initialization of MNC w/ flags read at the eeboot stage
1831        and lookup tables set in initialize_fixed
1832      - write all MNC output to a freshly-created directory
1833    o thermodynamics sea-ice (thsice) is now tested with testreport.
1834    o test exp. advect_cs: use the standard cs32 grid ; update output.
1835    o Added functionality to grdchk:
1836      pick global i,j,k position (or nearest wet) where to perform check.
1837    
1838    checkpoint52l_post
1839    o new land formulation:
1840      a) use ground enthalpy as prognostic variable to ensure exact
1841         energy conservation.
1842      b) account for water temperature and for latent heat of freezing
1843         in all processes (rain, run-off, ground storage)
1844      c) compute surface and ground temperature implicitly.
1845    o aim_v23 modification for new land model:
1846      a) Treat separately land / ocean / sea-ice surface fluxes
1847         to allow implicit computation of land & sea-ice surface temp.
1848      b) add snow precipitation.
1849    checkpoint52l_pre
1850    
1851    o fix problem (when 1 tile is empty) in min/max monitor.
1852    o fix bug in timeAve (u,vZetatave in common block)
1853    o no restoring terms under ice for pkg/seaice
1854    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1855    o bug fix for pkg/seaice pickups
1856    o change MNC call locations and add coordinate attributes
1857    o mask vorticity at the corner ; affects global_ocean.cs output
1858    o fix ini_curvilinear_grid ; test CS experiments with mpi
1859    o aim.5l_cs: modify sea-ice fraction input file ; update output
1860    o exf: Adding simple range check routine for exf fields after read
1861    
1862    checkpoint52k_post
1863    o removed top-level directory "diags"
1864      - we migrated these functions to pkg/timeave a long time ago
1865    o fixed bug introduced in pkg/monitor
1866    o accuracy ctrlprec = 32 insuffient for gradient checks using
1867      averaged fields (I/O via cost_averages)
1868      -> use ctrl.h in active_file*.F to control I/O precision.
1869    o paramter list of CALL ADTHE_MAIN_LOOP
1870    o added initial do_the_model_io to ecco
1871    o set all ...Freq to zero after cost_final
1872      taveFreq, dumpFreq, pChkptFreq
1873    o MAIN and ECCO differentiability restored
1874    
1875    checkpoint52j_post
1876    o fix nchklev in tamc.h for global_ocean...
1877    o Bringing flow and store directives up-to-date
1878    o Really weird thing!
1879      call do_the_model_io from the_main_loop with parameters
1880      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1881      TAF places a faulty re-call of initialise_varia
1882      after cost_final call which should not be there!
1883    checkpoint52j_pre
1884    
1885    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1886      error messages
1887    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1888    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1889      debug output
1890    o modfied mdsio_writefield.F to handle non-global files under exch2
1891    o update AIM Cubed-Sphere exp (aim.5l_cs):
1892      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1893    o update AIM Equatorial Channel exp:
1894      use standard aim_v23 pkg and change the SST fields to be more realistic.
1895    o globalFile now works with exch2
1896    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1897      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1898    o limit timeave output for hi-res integrations
1899    
1900    checkpoint52i_post
1901    o removed CPP_EEOPTIONS.h from verification/*/code
1902    o updated the tiling for global_ocean_pressure
1903    checkpoint52i_pre
1904    
1905    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1906      the old pkg/aim).
1907    
1908    checkpoint52h_pre
1909    o shortened offending lines in exch2_send_rx?.template
1910    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1911    o genmake2: add build & execute test for NetCDF code
1912    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1913      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1914    o added useSingleCPUIO flag to monitor.F and mon_out.F
1915    o added temporary hack for sea-ice dynamics on the cube:
1916      metric terms are ignored and it is assumed that
1917      there is no sea-ice on cube faces 1, 2, 4, and 5.
1918    
1919    checkpoint52f_post
1920    o added exch2 cube routines to pkg/exch2
1921    o modified hs94.cs-32x32x5 to use it
1922    o added new grid files to hs94.cs-32x32x5
1923    checkpoint52f_pre
1924    
1925    checkpoint52e_post
1926    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1927      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1928    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1929      to work with implicit vertical advection and AB ;
1930    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1931    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1932     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1933    checkpoint52e_pre
1934    
1935    o fix bug in impldiff when Nr=1 or Nr=2.
1936    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1937    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1938    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1939      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1940    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1941    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1942    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1943    
1944    checkpoint52d_post
1945    o re-tiled many expts to allow comparison in multi-processor mode
1946      - updated output accordingly
1947      - changed hs94.128x64x5 to use intial T from file rather than use the
1948        random number generator
1949    o add infrastructure in model routines for fizhi and gridalt packages
1950    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1951    o changes to permit hi-res, cubed-sphere, configuration
1952      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1953      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1954      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1955        of surface winds for the cube
1956      (A verification experiment, based on global_ocean.cs32x15, but with
1957       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1958       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1959       complete with example surface forcing files and matlab scripts to look
1960       at the output and compare it with that of global_ocean.cs32x15.)
1961    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1962       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1963       to conform to the common rule.
1964    o check-in the first version of the coupler + interfaces for multi-components
1965       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1966       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1967       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1968       - ocean and atmos. share the same horizontal grid (no interpolation).
1969       - exchanges between component and coupler is done in forward_step
1970    o new verification experiment, cpl_aim+ocn:
1971       coupled ocean - AIM atmosphere on cs32 grid.
1972    
1973    checkpoint52d_pre
1974    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1975    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1976    
1977    checkpoint52c_post
1978    o Fixing OPTIONS files for use of exf:
1979      - ALLOW_ECCO not needed
1980      - ECCO_CPPOPTIONS.h should not be included from
1981        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1982        as has been the case in the past
1983      - All cal/exf related options are currently set in
1984        single header file. Should remain so until we
1985        agree on a consistent new policy.
1986    o Removed all CPP options for cal package.
1987      cal has no more CPP options.
1988    o modified STOREs in GAD_ADVECTION
1989    o corrected key comp. for passkey
1990    
1991    checkpoint52b_post
1992    o new version: "thsice" of thermodynamic sea-ice pkg:
1993     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1994     - modify fluxes but do not change theta directly;
1995     - light cleaning of bulk_force pkg (still needed with thsice).
1996     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1997       + output_thsice.txt to test thsice & bulk_force pkgs.
1998    o put back grid & coriolis monitor output.
1999    checkpoint52b_pre
2000    
2001    o call "do_the_model_io" at the beginning (=> dump initial state)
2002    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2003    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2004      (need info on NUMBER_OF_PTRACERS)
2005    o missing PTRACERS headers in some routines
2006    o default tamc.h in pkg/autodiff supposed to crash
2007      to ensure proper customization
2008    
2009    checkpoint52a_post
2010    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2011      - moved surfaceTendencyTice from pkg/seaice to main code
2012      - subroutine FREEZE_SURFACE now limits only surface temperature
2013        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2014        => new output.txt for global_ocean.cs32x15 & global_with_exf
2015      - keep the old version of FREEZE for backward compatibility;
2016        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2017      - corresponding modifs for TAF directives
2018    o added surface flux output variables to TIMEAVE_STATVARS
2019    o time-averaged output for pkg/ptracers
2020    o fix problem with ECCO-related divided adjoint
2021      snapshot file was missing some ad-variables,
2022      but no warning issued by TAF
2023    
2024    checkpoint52a_pre
2025    o some bug fixes for #undef REAL4_IS_SLOW
2026    
2027    checkpoint52 = ecco_c52_e35
2028    o after testing adjoints of checkpoint51u_post
2029    
2030    checkpoint51u_post
2031    o this is the post-merge tag of the ecco-branch
2032      (needs another clean checkout and re-testing)
2033    o various natl_box_adjoint configs and results
2034      but no input fields
2035    o obcs adjoint not yet merged!
2036    o adding ECCO global 1x1 and 2x2 degree configs
2037    o updated/extended some store directives for seaice
2038    o pkg/ecco now containes ecco-specific part of cost function
2039    o top level routines the_main_loop, forward_step
2040      supersede those in model/src/
2041      previous input data.cost now in data.ecco
2042      (new namelist ecco_cost_nml)
2043    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2044    
2045    checkpoint51t_post
2046    o this is the pre-merge tag of the ecco-branch
2047    
2048    checkpoint51s_post
2049    o cleanup: removed various obsolete #define-s
2050    o pkg/grdchk
2051      - renamed 'ph-grd 3' to 'grad-res'
2052      - merged from ecco-branch
2053        (remaining bug fixes for obcs gradient checks)
2054      - additional high-precision output for testreport
2055        (grep for 'precision_grdchk_result')
2056    
2057    checkpoint51r_post
2058    o cleaned up or removed CPP_OPTIONS.h files
2059    o updated results for some of the tests to reflect the new
2060      optfiles (-ieee: -O0 instead of -O3)
2061    
2062    checkpoint51q_post
2063    o cd_code:
2064      - moved cd_scheme.F -> cd_code_scheme.F
2065      - separate read_checkpoint from cd_code_ini_vars.F
2066      - separated cd_code part from write_checkpoint
2067      - updated AD_SOURCE, generated .flow
2068      - added CD_CODE_VARS.h to the_main_loop
2069      - Moving cd_code specific store dir.s to pkg/cd_code
2070    o ctrl package totally restructured
2071      - pack/unpack now optional and decoupled from
2072        xx_/adxx_ I/O
2073      - ctrl_pack/unpack cleaned
2074        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2075      - confined inclusion of AD_CONFIG.h to where necessary.
2076    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2077    
2078    checkpoint51p_post
2079    o create initial cd_code package
2080      - WARNING: the initialization of fields within packages
2081        is broken because INI_FIELDS (where READ_CHECKPOINT is
2082        called) is called *before* PACKAGES_INIT_VARIABLES.
2083        This seems to be backwards since
2084        1) its important to initially zero the entire field including
2085           the "halo" region
2086        2) zeroing needs to be done *before* reading pickup info
2087           and the pickup call might or might not happen in any
2088           particular run
2089      - this needs an overhaul for R2
2090    o cleanup verification/*/code/GMREDI_OPTIONS.h
2091    o cleanup testreport
2092    
2093    checkpoint51o_post
2094    o bringing AD-related verif's up to date with genmake2
2095      - carbon/
2096      - global_ocean.90x40x15/
2097      - hs.94.1x64x5/
2098      - (front_relax/ )
2099    o (more) consistent directory structure for AD-related verif.'s
2100    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2101    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2102    o bug fix in find_alpha.F for MDJWF:
2103      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2104        change rho -> rho-rhoConst
2105      - replace call find_rho to find_rhonum
2106    o initialisation of rFlx extended to full array (required by TAF)
2107      and shifted to thermodynamics
2108    o removed PTRACERS.h in ptracers routine
2109    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2110    o Correcting initialisations for fVerU, fVerV.
2111    o helping TAF to recognize dependency on kUp for
2112      fVerU, fVerV
2113    o Replacing delZ by delR in pkg/ctrl/
2114    checkpoint51o_pre
2115    
2116    o undid all of cp51 pending some cleanups and discussion
2117    o added the [#include "AD_CONFIG.h"] statement to all files that need
2118       it for adjoint/tl #defines
2119     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2120     o removed tools/genmake since it no longer works
2121    
2122    checkpoint51n_post
2123    o modifications to make FREEZE flux visible to pkg/kpp
2124      - moved surfaceTendencyTice from pkg/seaice to main code
2125      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2126      - subroutine FREEZE now limits only surface temperature
2127        (this means new output.txt for global_ocean.90x40x15,
2128         global_ocean.cs32x15, and global_with_exf)
2129    o added surface flux output variables to TIMEAVE_STATVARS
2130    
2131    checkpoint51n_pre
2132    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2133    o added [#include "AD_CONFIG.h"] to all files that use the following
2134      defines:
2135      - ALLOW_ADJOINT_RUN
2136      - ALLOW_TANGENTLINEAR_RUN
2137      - ALLOW_ECCO_OPTIMIZATION
2138    
2139    checkpoint51m_post
2140    o incorporating changes to get TAMC/TAF working in genmake2
2141      - added new TAMC/TAF targets to the Makefile
2142      - various cleanups related to package handling
2143      - these changes should have no impact on the forward model
2144    
2145    checkpoint51l_post
2146    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2147     - faster algorithm for cal_addtime.F
2148     - higher precision arithmetic, where needed
2149     - pkg/exf *startdate variables changed from calendar date to
2150       model integration time
2151    
2152    checkpoint51l_pre
2153    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2154    o enable to apply restoring on S & T only in a latitude band.
2155    o update output (external_forcing_surf modif. change truncation errors)
2156       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2157    
2158    checkpoint51k_post
2159    o change default to: useNHMTerms=.FALSE.
2160     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2161       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2162     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2163        exp1, ideal_2D_oce
2164     - change data file of oceanic exp (leave the results unchanged for now)
2165       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2166    o set gravitySign automatically according to the vertical coordinate used
2167      (and change sign: back to "logical" value: +1 when R increases downward)
2168    o added an include barrier to the default CPP_OPTIONS.h and
2169      removed the #include "PACKAGES_CONFIG.h" from it
2170    o fix a bug in mom_fluxform (from chk51j_post)
2171    
2172    checkpoint51j_post
2173    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2174    o adjusted some flow directives (dynamics, thermodynamics)
2175    o added cubed-sphere case to test cost function
2176    o heckpoint_lev?_directives.h now include
2177      pkg-specific directives, whenever those are enabled.
2178    o Moving pkg-specific flow directives to corresponding pkg
2179      Moving pkg-specific differentiation list to corresponding pkg
2180      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2181      ---> conventions are
2182           - pkg_ad.flow
2183           - pkg_ad_diff.list
2184           - pkg_ad_check_lev?_dir.h
2185    
2186    checkpoint51i_post
2187    o merge of the branch-genmake2
2188      - knowingly breaks the older genmake
2189      - automatic generation of all ALLOW_${PKG_NAME} defines
2190      - new testreport supersedes older testscript
2191    o large number of package inclusion and header cleanups
2192    checkpoint51i_pre
2193    
2194    o new output for adjoin of global ocean vector invariant
2195    o fix for checkpoint of thermodynamic seaice and bulk_force
2196    o Steph gchem various cleanups
2197    
2198    checkpoint 51h_pre
2199    o fixed some single quotes
2200    o modify gchem pkg to be more versatile
2201    o modifications to clean up dic pkg
2202    o add pkg/cfc
2203    
2204    checkpoint51g_post
2205    o provide links for ARPACK and ADM*TLM
2206    o start removing verification/vero/
2207    o update AD-related stuff
2208      (in particular some IF-statements in model/src/ routines)
2209    o adding to verification/global_ocean.90x40x15/ adjoint of
2210      vector invariant setup
2211    
2212    checkpoint51f_post
2213    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2214    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2215      of tracer Green's fucntions for ocean inversion project.
2216    
2217    checkpoint51f_pre
2218    o Added on-the-fly spatial interpolation capability
2219        "USE_EXF_INTERPOLATION" to pkg/exf.
2220      - This is a temporary Cartesian-grid hack until
2221        the super-duper ESMF coupler becomes available.
2222      - See verification/global_with_exf/README for usage example.
2223      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2224        flags and modified pkg/seaice accordingly.
2225    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2226        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2227        non-local transport term.
2228    
2229    checkpoint51e_post
2230    o pkg/mom_vecinv:
2231      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2232      - add time-ave diagnostic of vorticity advection.
2233    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2234    o atmospheric geopotential: - include water vapor effect;
2235                                - use p^kappa in p* scaling.
2236    o land pkg: read initial state from files.
2237    o AIM : add stratospheric drag in the upper level
2238    
2239    checkpoint51d_post
2240    o change function ILNBLNK (=> last non-blank char.) to return zero
2241      (instead of the string length) when the string. char is empty
2242    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2243    o modif's to restore TAMC compatibility
2244      - avoid "_d" constructs in PARAMETER declarations
2245      - avoid interrupting lines by comment lines
2246    o Use cluster local disks for purely local I/O
2247      vs. globally visible disks needed for ctrl stuff
2248      (merged from ecco-branch)
2249      - new active_file_loc... and mdsio_..._loc routines
2250      - affected packages: autodiff, ctrl, grdchk, mdsio
2251    
2252    checkpoint51c_post
2253    o introducing integer flag debugLevel
2254      - debLevZero: suppress all output
2255      - debLevA: standard
2256      - debLevB: equivalent to current debugMode=.TRUE.
2257    o introducing pathname variable mdsioLocalDir for mdsio
2258      that can be specified at runtime
2259      (relevant for cluster I/O to local disk)
2260    `
2261    >>>checkpoint51b_post
2262    adjoint of ptracers
2263    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2264    o extended state in checkpoint_lev?, etc.
2265    o alternative ctrl/cost with tr1 or ptracer
2266    o new comlev1_bibj_ptracers
2267    o new ptracers.flow
2268    o made ptracers_forcing same as external_forcing_s
2269    o added verification for adjoint with ptracers
2270      - adm. grdchk fail so far
2271      - tlm. grdchk OK
2272      - checked tapelev/comlev recomputations: OK
2273    <<<checkpoint51b_pre
2274    
2275    checkpoint51a_post
2276    o added code for biogeochemistry package
2277      - new pkgs: dic, gchem
2278      - new subroutine in ptracers
2279    o modify code for biogeo packages
2280      - in model/src and pkg/ptracers
2281    
2282    checkpoint51
2283    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2284      - autodiff, ctrl, exf, grdchk, seaice
2285      kept separate packages
2286      - cost, ecco, obcs
2287    o updating verification/internal_wave, verification/lab_sea
2288      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2289    
2290    checkpoint50i_post
2291    o Preparing next differentiable checkpoint and sync
2292      of MAIN vs. ecco-branch
2293      - 1st step: this one is differentiable
2294      - 2nd step: next(! not this) checkpoint will have updated packages
2295                  from ecco-branch)
2296    
2297    checkpoint50h_post
2298    o new package "land": provide surface BC for AIM.
2299    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2300    o AIM: use true log-P extrapolation for near surface temp (= as in
2301        F.Molteni paper) ; update aim.5l_cs output.
2302    o New variable in PARM03 for more flexible pickups
2303    o somewhat cleaned package initialisation sequence for
2304      ctrl/ cost/ ecco/ in packages_... routines
2305    
2306    checkpoint50g_post
2307    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2308      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2309      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2310        made the default because of faster convergence than ADI
2311    
2312    checkpoint50f_post
2313    o exf totally restructured
2314      - replaced all exf_set_ routines by one generic exf_set_gen.F
2315        and made sure it's still differentiable
2316      - split exf_getffields.F into new exf_bulkformulae.F
2317      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2318      - updated adjoint/makefile and relevant verif. accordingly
2319    
2320    checkpoint50f_pre
2321     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2322          + change Evap over land. (update aim.5l_cs output)
2323     o added missing .cvsignores and made uniform across expts
2324     o changed configuration of tidal_basin_2d expt
2325     o added pkg/debug functions for tracing code in fatal crashes
2326     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2327     o new fn in pkg/monitor to stop model if solution grows too big
2328     o removed lots of single quotes from comments
2329    
2330    checkpoint50e_post
2331    o make KPP work with PTRACERS
2332     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2333       nearly a copy of kpp_transport_s
2334     - there is no analogue to SurfaceTendencyS, so I have to use
2335       gPtr(of the surface layer) instead
2336    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2337    checkpoint50e_pre
2338    
2339    checkpoint50d_post
2340    o change kpp output from multiple-record state files to single-record state
2341      files analogous to write_state.F
2342    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2343      analogous to the cg2d-related output.
2344    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2345      so that writing to internal file fn (with length 512) fails.
2346    checkpoint50d_pre
2347    
2348    checkpoint50c_post
2349    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2350    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2351    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2352    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2353    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2354    
2355    checkpoint50c_pre
2356    Merging from release1_p13:
2357    o bug fix for pkg/seaice dynamic solver
2358    o Added SEAICE_initialHEFF to pkg/seaice
2359    
2360    checkpoint50b_post
2361    o store u*,v* in gU,V instead of in guNm1,gvNm1
2362    o in order to put the momForcing out of the Adams-Bashforth:
2363      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2364      to timestep.F
2365    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2366    o re-generate output for highly sensitive test-exp:
2367       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2368    
2369    checkpoint50b_pre
2370    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2371    o corrected CPP option mismatch in exf_Bulk... functions for case
2372      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2373    
2374    checkpoint50a_post
2375    o Bug fix for merging between c50 and KPP.
2376      ikey was passed from thermodynamics to kpp_calc via
2377      common block rather than being recomputed in kpp_calc,
2378      in contradiction with new key itdkey.
2379      New key ikppkey created, and tamc.h headers updated.
2380    
2381    checkpoint50
2382    - 2nd step of merge with ecco-branch:
2383      merge changes in ecco-branch back into main trunk
2384    - bug fix in find_alpha
2385    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2386    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2387    - merged some sliced AD support routines
2388    
2389    checkpoint49
2390    merged from ecco-branch:
2391    o exf:
2392      - Enable initialisation of forcing fields to constant
2393        (runtime) values.
2394      - in exf_getffields.F
2395        Reduce i-/j-loop to interior domain, discarding overlaps.
2396        That also fixes wrong TAF-key computations for key_1, key_2
2397        with bulf formulae.
2398      - exf_init.F modify #ifdef for exf_init_evap
2399      - exf_getffieldrec.F, ctrl_getrec.F
2400        The following INT-usages are not safe:
2401          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2402          fldcount = int(fldsecs/fldperiod) + 1
2403        and were modified.
2404    o autodiff: checkpoint_lev...
2405      - updated storing for bulk formulae (some arrays were missing)
2406      - added state for seaice package
2407      - synchronized with main branch
2408    o DIVA:
2409      Modif.s in
2410      - the_main_loop.F
2411      - the_model_main.F
2412      and added cost_final_restore.F cost_final_store.F
2413      o With these changes, it is possible to fully separate
2414        the first forward run to compute the cost function (mdthe_main_loop)
2415        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2416        into separate model executions.
2417        This enables better tuning of DIVA to given queue sizes.
2418      o Loss of cost function value in consecutive DIVA runs is
2419        fixed by storing to 'costfinal' file.
2420      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2421        beginning/end of adjoint integration is accounted for.
2422      The current changes apply to TAF-1.4.26.
2423      TAF has one remaining bug, requiring one manual change
2424      (see MITgcm manual).
2425    o cal: synchronized between MAIN and ecco-branch
2426    
2427    checkpoint48i_post
2428    o Changes to restore differentiability of code w.r.t. previous tag
2429      (mostly adding new routines to make list and replacing
2430      pressure by totPhiHyd).
2431    o Updated and merged grdchk package
2432      - has both ADM and TLM checks
2433      - works for single- and multi-proc.
2434      - output cleaned
2435      - worked successfully for parallel DIVA
2436    o genmake:
2437      - Adding -platform=SP4
2438      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2439    o Modif. for DIVA:
2440      ctrl_unpack should not be called in intermediate DIVA interval.
2441      (similar thing would apply for active files such as
2442      tbar, sbar, psbar, which should not be reinitialised;
2443      only relevant for ecco-branch)
2444    
2445    checkpoint48h_post
2446    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2447    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2448    o Added SEAICE_initialHEFF to pkg/seaice
2449    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2450    
2451    checkpoint48g_post
2452    --- EOS:
2453    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2454      store total Potential in totPhyHyd for diagnostics & EOS.
2455    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2456    --- Pressure/geopotential gradient:
2457    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2458    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2459      ( changes results of global_ocean_pressure )
2460    o NLFS + z-coord.: add eta*Rho' contribution.
2461    o accurate phiHyd when using interface-W at the middle between 2 centers
2462     ( changes results of ideal_2D_oce )
2463    o includes r* 2nd term in potential gradient.
2464    
2465    checkpoint48f_post
2466    Merging from release1_p12:
2467    o Modifications for using pkg/exf with pkg/seaice
2468      - improved description of the various forcing configurations
2469      - added basic radiation bulk formulae to pkg/exf
2470      - units/sign fix for evap computation in exf_getffields.F
2471      - updated verification/global_with_exf/results/output.txt
2472    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2473      (SBO) core products, including oceanic mass, center-of-mass,
2474      angular, and bottom pressure (see pkg/sbo/README.sbo).
2475    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2476      to avoid negative values in shallow regions.
2477      - updated verification/natl_box/results/output.txt
2478      - updated verification/lab_sea/results/output.txt
2479    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2480    o Added useSingleCpuIO option (see PARAMS.h).
2481    o Updated useSingleCpuIO option in mdsio_writefield.F to
2482      work with multi-field files, e.g., for single-file pickup.
2483    o pkg/seaice:
2484      - bug fix in growth.F: QNET for no shortwave case
2485      - added HeffFile for specifying initial sea-ice thickness
2486      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2487    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2488      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2489    o pkg/seaice:
2490      - adjoint-friendly modifications
2491      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2492    
2493    checkpoint48e_post
2494    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2495    o dynamics: change definition of computational domain & adapt mom_fluxform
2496      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2497    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2498        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2499        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2500        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2501        inverted_barometer solid-body.cs-32x32x1
2502      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2503    
2504    checkpoint48d_post
2505    o in preparation for r*:
2506     a) use pre-computed gradient of hydrostatic potential:
2507        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2508     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2509        => affects results of glob_oce_pressure (different truncation error)  
2510      update output.txt of ideal_2D_oce & global_ocean_pressure
2511    
2512    checkpoint48d_pre
2513    o in preparation for r*:
2514      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2515      pass the 2 comp. of the grad. as arguments to momentum S/R.
2516      but for the moment, only used if it does not change the results.
2517    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2518    
2519    checkpoint48c_post
2520    Modifications in treatment of initial flux forcing controls
2521    to avoid extra storing of flux fields.
2522    
2523    checkpoint48c_pre
2524    o Added tidal_basin_2d experiment (currently 1D!)
2525    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2526    
2527    checkpoint48b_post
2528    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2529     (modification to pressure gradient not yet implemented)
2530    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2531      (for U & V) that are used for vertical advection of momentum.
2532    
2533    checkpoint48a_post
2534    o In preparation for r*, use temp. array to compute vertical transport
2535       in flux-form momentum pkg. => change results of few test-exp.
2536      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2537                        lab_sea, natl_box & plume_on_slope
2538    
2539    checkpoint48
2540    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2541    
2542    checkpoint47j_post
2543    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2544    o moved adexch from forward_step to addummy_in_stepping
2545    o added exch in ctrl_map_...
2546    o aveFreq.=0. at end of cost_final to avoid overwrite in
2547      reverse checkpointing loop
2548    o Yet more changes in gmredi:
2549      * adgmredi_calc_tensor
2550        avoiding all recomputation of gmredi_slope_limit
2551      * adgmredi_x/y/rtransport
2552        added flag for excessive storing to avoid recomp. of
2553        u/v/rtans, dTdx/y/z
2554        -> this is not really necessary and very memory-consuming
2555      * adgmredi_slope_psi:
2556        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2557      * gmredi_slope_limit
2558        re-activated full calculation of taperfct for case 'ac02'
2559    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2560    
2561    checkpoint47i_post
2562    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2563    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2564      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2565    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2566    o gmredi: fix few bugs.
2567    
2568    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2569    This will be a good checkpoint to plug into the ecco-branch.
2570    o few modif.'s to get latest version adjointed
2571      (mainly kick out code in ini_linear_phisurf)
2572    o modif's to run adjoint with exactConserv
2573    o case GM_BOLUS_ADVEC should be cleaned
2574      S/R gmredi_slope_psi should be cleaned
2575    o verification/carbon now has exactConserv=.TRUE.
2576    
2577    checkpoint47g_post
2578    o time-average AIM output: becomes independent from statvars time-average
2579      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2580    o After TAF bug fix:
2581      Tested adjoint of gmredi package.
2582      Tests were done with checkpoint47 rather than with latest
2583      checkpoint47f_post since the latter is broken for the adjoint
2584      verification/carbon/ contains both ADM and TLM gradient checks.
2585    Here they are, before they get changed/lost/stolen.
2586    Mostly modif.'s to fix numerical sensitivities.
2587    Gradient checks OK for
2588    - GM_taper_scheme:
2589      * clipping
2590      * ac02
2591      * linear
2592      * glw91
2593      * dm95
2594      * ldd97
2595    - GMREDI_OPTIONS:
2596      * GM_VISBECK_VARIABLE_K
2597      * GM_NON_UNITY_DIAGONAL
2598      * GM_EXTRA_DIAGONAL
2599      * GM_BOLUS_ADVEC
2600    in conjunction with data.gmredi parameters to be checked in
2601    in a few minutes under verification/carbon/code/
2602    
2603    checkpoint47f_post
2604    Merging from release1_p10:
2605    o modifications for using pkg/exf with pkg/seaice
2606      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2607        and SEAICE_EXTERNAL_FLUXES
2608      - pkg/exf CPP options EXF_READ_EVAP and
2609        EXF_NO_BULK_COMPUTATIONS
2610      - usage examples are Experiments 8 and 9 in
2611        verification/lab_sea/README
2612      - verification/lab_sea default experiment now uses
2613        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2614    
2615    checkpoint47e_post
2616    o created a tag prior to creating a branch
2617    
2618    checkpoint47d_post
2619    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2620      at the bottom boundary had an erroneous half slip boundary condition
2621    o added bottom drag and no slip boundary condition capabilities to
2622      oceanic pressure coordinates code
2623    o added new verification experiment global_ocean_pressure, this experiment is
2624      also described in the tutorial section of the manual
2625    checkpoint47d_pre
2626    
2627    checkpoint47c_post
2628    o Added a verification experiment for a global cubed-sphere ocean run
2629      -  verification/global_ocean.cubed32x32x30
2630      -  uses pkg/therm_seaice and pkg/bulk_forcing
2631    
2632    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2633    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2634      when using P-coordinate; only implemented for atmospheric config.
2635    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2636      NOTES: requires option NONLIN_FRSURF to be "#define".
2637    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2638    
2639    checkpoint47b_post
2640    Merging from release1_p9:
2641    o pkg/seaice
2642      - removed GOTO's and added taf directives
2643      - double precision constants to reduce the g77 (Linux)
2644        to F77 (SGI) differences reported in release1_p8
2645    o tools/genmake
2646      - added SGI options
2647    o verification/testscript
2648      - updated to that of checkpoint47a_post
2649    o verification/global_ocean.90x40x15/input/eedata
2650      - modified for SGI f77 compatibility
2651    o verification/lab_sea
2652      - added description of sea-ice model
2653      - added missing matlab routines
2654      - added test of thermodynamics parallelization
2655    
2656    checkpoint47a_post
2657    o new pkg: aim_v23
2658     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2659       for now, keep the same surface forcing as before.
2660     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2661     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2662     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2663    o add diagnostic of surface correction term in monitor output
2664    
2665    o bulk_force and therm_seaice
2666    - Two packages:  bulk_force (Bulk forcing)
2667      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2668    - Earlier integration from Stephaine Dutkiewicz
2669      and Patrick Heimbach.
2670    - Two ifdef statements for compile time,
2671       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2672    
2673    checkpoint47
2674    differentiable version of checkpoint46n_post
2675    o bug fix in quasihydrostaticterms
2676    o * "clean" adjoint code (in terms of extensive recomputations)
2677        can now be obtained for all GMREDI options (i.e. for
2678        - GM_VISBECK_VARIABLE_K
2679        - GM_NON_UNITY_DIAGONAL
2680        - GM_EXTRA_DIAGONAL
2681        - GM_BOLUS_ADVEC )
2682      * However, wrong gradient check problem remains unsolved.
2683      * New CPP options have been introduced for different
2684        tapering schemes
2685    o external_fields_load now part of differentiation list
2686    o pressure needs multiple storing;
2687      would be nice to have store_pressure at beginning or
2688      end of forward_step, e.g. by having phiHyd global (5-dim.)
2689      (NB: pressure is needed for certain cases in find_rho,
2690      which is also invoked through convective_adjustment).
2691    o recomputations in find_rho for cases
2692     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2693    o #define ATMOSPHERIC_LOADING should be differentiable
2694    o ini_forcing shifted to begining of initialise_varia
2695    o Incorporating QNVS line search routines into MITgcm
2696      (this is separate code, and therefore not under pkg)
2697      lsopt/, optim/
2698    o Updated verification/carbon/
2699      - #define GM_VISBECK_VARIABLE_K
2700      - GM_taper_scheme    = 'ldd97'    
2701    
2702    checkpoint46n_post
2703    Merging from release1_p8:
2704    o verification/natl_box:
2705      updating new external_fields_load routine
2706    o New package: pkg/seaice
2707      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2708      The sea-ice code is based on Hibler (1979-1980).
2709      Two sea-ice dynamic solvers, ADI and LSR, are included.
2710      In addition to computing prognostic sea-ice variables and diagnosing
2711      the forcing/external data fields that drive the ocean model,
2712      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2713      The implied surface heat flux is then stored in variable
2714      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2715      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2716      non-local transport term.  Because this call precedes model
2717      thermodynamics, temperature under sea-ice may not be "exactly" at
2718      the freezing point by the time theta is dumped or time-averaged.
2719      N.B.: fairly large differences in accuracy occur across
2720            different platforms/compilers; comparison between
2721            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2722            generated output gives:
2723       T           S           U           V
2724      C D M    c        m  s        m  s        m  s        m  s
2725      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2726      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2727      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2728    
2729      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2730    o GAD:
2731      - generated new common blocks to account for call of
2732        same gad routines with differing traceridentities
2733        (needed to modify tracerIdentity indices in GAD.h)
2734      - generated separate common blocks for case useCubedSphereExchange
2735        (Department of Futurology)
2736      - parameter lists to gmredi_?transport: added tracerIdentity
2737      - added new key indices to tamc.h
2738    o external_fields_load:
2739      - added this routine to TAF list
2740      - needed to make some common blocks global and additional storing
2741        along the same lines as exf package (checkpoint_lev?_directives.h)
2742    o exf:
2743      updated external forcing package
2744      - bug fixes carried over from ecco-branch
2745        (missing OBCS_OPTIONS.h in two routines)
2746      - enable easy to use "no forcing".
2747      - added exf I/O for atmospheric loading
2748      - added exf I/O for runoff data
2749      - transfered scaling between exf <-> MITgcm to exf namelist
2750    o Adding new verification experiment global_with_exf.
2751      This verification experiment is almost identical to the
2752      global_ocean.90x40x15 experiment, except that it uses
2753      the exf (and cal) package instead of the
2754      external_fields_load routine (cf README file).
2755    
2756    checkpoint46m_post
2757    o modified testscript to return -- when there are no lines of "%MON" output
2758    o added new flag "quasiHydrostatic" for QH mode
2759      and new routine quasihydrostaticterms()
2760    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2761      New routine: mom_u_coriolis_nh()
2762    o fixed sign of non-hydrostatic metric terms in u and v equations.
2763      Depend on correct sign of gravitySign.
2764    o added work.pc* to .cvsignore in aim directories using ifc
2765    o introduced flag for controllin non-hydrostatic metric terms
2766    o removed gravitySign from PARM04
2767    o switched to g77/ifc from pgf77 in aim experiments
2768    
2769    checkpoint46l_post
2770    o made convective adjustment work with pressure coordinates:
2771     - changed the direction of k-loop in convective_adjustment.F for the
2772       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
2773     - adjusted the reference pressure k-index in convective_adjustment.F
2774     - adjusted the convection condition in convect.F (in analogy to
2775       calc_ivdc.F)
2776     - convective_adjustment no longer computes anything on the halos
2777     - removed the warnings about negative salinity from find_rho.F and
2778       find_alpha.F; instead the new routine look_for_neg_salinity, called
2779       at the beginning of find_rho, find_alpha, and find_beta, does a
2780       check of the entire slice, if CPP-option
2781       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
2782    checkpoint46l_pre
2783    
2784    checkpoint46k_post
2785    o fixed the verification/global_ocean.90x40x15 experiment:
2786     - new bathymetry (the world according to A., JMC, and M.)
2787     - new initial fields and forcing fields (*.bin files)
2788     - new POLY3.COEFFS (for the next release one should switch to a full
2789       equation of state: JMD95P or MDJWF)
2790     - fixed several errors and redundancies in the data file
2791     - experiment uses looped cells
2792     - added matlab directory with diagnostic scripts for plotting of output
2793    
2794    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
2795     - read AIM physics parameters from a file (data.aimphys)
2796     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
2797    
2798    checkpoint46j_post
2799    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
2800    o move wVel computation at the end of the time step, in S/R integr_continuity
2801    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
2802    o update timeave pkg for wVel diagnostic.
2803    checkpoint46j_pre
2804    
2805    checkpoint46i_post
2806    o Clean up AIM package (and keep the results unchanged):
2807      include CPP_OPTION and use IMPLICT NONE in all routines ;
2808      declare all the variables _RL ; use _d 0 for all numerical constants.
2809      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
2810    
2811    checkpoint46h_post
2812    o cleaned up the use of rhoNil and rhoConst.
2813      - rhoNil should only appear in the LINEAR equation of state, everywhere
2814        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
2815        and the dynamical equations are all divided by rhoConst
2816    o introduced new parameter rhoConstFresh, a reference density of fresh
2817      water, to remove the fresh water flux's dependence on rhoNil. The default
2818      value is 999.8 kg/m^3
2819    o cleanup up external_forcing.F and external_forcing_surf.F
2820      - can now be used by both OCEANIC and OCEANICP
2821    checkpoint46h_pre
2822    
2823     Added code to convert surface volume flux (fresh water) into
2824     a mass flux when using P coordinates in the ocean (OCEANICP).
2825     Note: It assumes you have set rho0=rhoConst=density of fresh water.
2826    
2827    checkpoint46g_post
2828    o Include a new diagnostic variable phiHydLow for the ocean model
2829      - in z-coordinates, it is the bottom pressure anomaly
2830      - in p-coordinates, it is the sea surface elevation
2831      - in both cases, these variable have global drift, reflecting the mass
2832        drift in z-coordinates and the volume drift in p-coordinates
2833      - included time averaging for phiHydLow, be aware of the drift!
2834    o depth-dependent computation of Bo_surf for pressure coordinates
2835      in the ocean (buoyancyRelation='OCEANICP')
2836      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
2837        Theta, Salinity, and Pressure in the parameter list. This routine is
2838        presently contained in find_rho.F. This routine does not give the
2839        correct density for 'POLY3', which would be a z-dependent reference
2840        density.
2841    o cleaned up find_rho
2842      - removed obsolete 'eqn' from the parameter list.
2843    o added two new verification experiments: gop and goz
2844      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
2845    checkpoint46g_pre
2846    
2847    checkpoint46f_post
2848    o Enable tangent linear (forward mode) gradient checks:
2849      - extended active file handling to g_... files
2850      - added TANGENT_SIMULATION to theSimulationMode
2851      - extended grdchk package accordingly
2852    o added tangent linear setup in verification/carbon/code_ftl
2853    o added adjoint setup in verification/front_relax/code_ad
2854    
2855    checkpoint46e_post
2856    o Added new equation of state -> MDJWF
2857      - EOS of McDougall et al., 2002, JAOT, submitted
2858      - caveat: the equation of state is only valid for a smaller (more
2859        realistic?) range of values than JMD95P/Z and UNESCO
2860      - added masks to the calculation of pressure in store_pressure
2861      - added more check values for density in check_eos (ini_eos.F), some of
2862        the old check values are out of the range of the MDJWF-eos, so don't
2863        expect perfect matches for those
2864    checkpoint46e_pre
2865    
2866    checkpoint46d_post
2867    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
2868      'OCEANICP', also initialised field pressure correctly in ini_eos in the
2869      case of pressure coordinates. eosType='JMD95Z' in
2870      combination with buoyancyRelation='OCEANICP' now causes an error.
2871    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2872      in find_alpha/beta.
2873    checkpoint46d_pre
2874    
2875    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2876      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
2877    
2878    checkpoint46c_post
2879    o Changes necessary for ocean in p-coordinates
2880     -  Added new buoyancy relation = 'OCEANICP'
2881     -  Added new parameters = gravitySign (this used to be contained inside
2882        the factor dRdZ which I added when we first switched to R coordinates).
2883     X GM/Redi is not compatible (yet)
2884     X bottom drag and no-slip need to be debugged.
2885    checkpoint46c_pre
2886    
2887    checkpoint46b_post
2888    o Added new equation of state -> JMD95Z and JMD95P
2889      - EOS of Jackett and McDougall, 1995, JAOT
2890      - moved all EOS parameters into EOS.h
2891      - new routines ini_eos.F, store_pressure.F
2892    o Added UNESCO EOS, but not recommended because it requires
2893      in-situ temperature (see JMD95)
2894    o Modified formatting for knudsen2.f in utils/knudsen2 and added
2895      unesco.f to be used with POLY3
2896    checkpoint46b_pre
2897    
2898    checkpoint46a_post
2899    o Added (atmospheric) pressure loading
2900      - new field in FFIELDS.h, etc...
2901      - new cpp flag ATMOSPHERIC_LOADING
2902    o Changed hFacC to _hFacC in calc_phi_hyd.F
2903    o Added SHORTWAVE_HEATING to some files for consistency
2904    checkpoint46a_pre
2905    
2906    checkpoint46
2907    further merges from release1_p5
2908    o new ctrl package
2909      - adopted from ECCO environment to enable optimization
2910      - added Eliassen Palm fluxes to controls
2911    o added Eliassen Palm flux controls to gradient check package
2912    o cost package
2913      - Compatible with new ctrl package
2914      - added Eliassen Palm cost hooks
2915      - modif's of existing cost functions
2916    o Adjoint-related bug fixes in kpp:
2917      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
2918      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
2919    o autodiff package
2920      - flow directives:
2921        + new for S/R do_the_model_io
2922        + enhanced for S/R checkpoint
2923        + new gmredi.flow
2924      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
2925        disable adcommon.h/g_common.h by default.
2926      - fixed problem for adjoint of global_max
2927    o modified verification/carbon/
2928    o New setup for adjoint of global_ocean
2929    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
2930    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
2931    o incorporated hooks for sponge layer code (external_forcing.F)
2932    
2933    checkpoint45d_post
2934    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
2935    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
2936      (affects plume_on_slope "cg2d" output)
2937    o add new parameter deltaTfreesurf for free-surface time stepping
2938    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
2939    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
2940    o change phiMin in exp1 (to agree with documentation)
2941    o add new flags:
2942     - T,S forcing inside/outside Adams-Bashforth
2943     - turn off temp,salt advection and/or forcing
2944     - for each tracer, define internal flag for multiDimAdvection & A-B
2945    o monitor: change definition of KE to check conservation of Energy
2946    
2947    checkpoint45c_post
2948    o Removed f90 comments ("!")
2949    o Modified initialisations to enable exf package for MITgcm
2950      (without invoking ECCO_PACKAGE).
2951    o modifications to gradient check package (Martin Losch)
2952      - enable centered differences
2953      - modified format of standard output
2954    
2955    checkpoint45b_post
2956    o cleaned exchange calls in cg2d
2957    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
2958    o included CPP option SINGLE_LAYER_MODE in thermodynamics
2959      to configure barotropic setup (Martin Losch)
2960    o moved some initialisations within bi,bj loop in dynamics
2961      (TAF flow dependency)
2962    o in initialise_varia, moved call packages_init_variables
2963      before convective_adjustment_init
2964      (corresponding adjustment of TAF tape initialisation).
2965    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
2966    
2967    checkpoint45a_post
2968    o compute Rho over the whole domain (extend iMin,jMin indices)
2969    o specific exchange for X-slice domain (case Ny=1)
2970    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
2971    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
2972    
2973    checkpoint44h_post = checkpoint45
2974    o Fix to restore differentiability:
2975      place at which packages_init_variables is called in
2976      initialise_varia is crucial for reverse control flow.
2977    o modifications in GMRedi to enable stable adjoint
2978      (corresponding modif's in thermodynamics, dynamics)
2979    o added missing hook for sponge layer code in external_forcing
2980    o modified test cost functions
2981    o storing in gad_advection (plus removal of write(0,*)!
2982    o missing headers TR1.h added in convective_adjustment routines
2983    o errorMessageUnit set non-equal zero in eeboot
2984      (conflict on some platforms, e.g. IBM SP3)
2985    o modified carbon verif.
2986    
2987    checkpoint44h_pre
2988    o vertical grid option: allow to put the Interface at the middle between
2989      2 cell-centers ; replace delZ in pkg/kpp by drF.
2990    o GM Advective form: Tracers are advected using the residual transport (=
2991      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
2992    
2993    checkpoint44g_post
2994    o fix surface correction term in multiDimAdvection (affects plume_on_slope
2995      results) ; ifdef missing in thermodynamics.F
2996    
2997    checkpoint44f_pre,checkpoint44f_post
2998    o added PTRACERS package
2999      This allows an arbitrary number of passive tracers to be integrated
3000      forward simultaneously with the dynamicaly model.
3001      + Implemented so far:
3002        - basic forward algorithm (time-stepping, advection, diffusion, convection)
3003        - I/O and checkpointing
3004        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
3005      + Not implemented so far:
3006        - KPP
3007        - OBCS
3008      + No specific example supplied (yet) but global_ocean.90x40x15 has the
3009        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
3010        line in data.pkg.
3011      + This package is disabled by default since it increases storage.
3012    
3013    
3014    o testscript: added -cleanup option
3015    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
3016                 b) enable to filter 2D fields.
3017    
3018    checkpoint44e_pre,post
3019    o re-wrote convective adjustment to use pre-calculated weights
3020      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
3021      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
3022      Original calls to convect() still in place.
3023    
3024    chkpt44d_pre,post
3025    o added missing EXCLUDE_MONITOR flags
3026    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
3027      (incompatible typ in MIN/MAX expressions caused problems
3028      on IBM SP3)
3029    o in genmake added variable MAKEDEPEND
3030      plus resetting for case SunOS
3031    o added timer_stats.c routine for IBM SP3
3032    o removed variables in dynamics
3033    !!! I forgot to create tag chkpt44d_pre !!!
3034    !!! But chkpt44d_pre = chkpt44c_post    !!!
3035    
3036    o real fresh water flux implemented with non-linear free-surface.
3037    
3038    chkpt44c_pre,post
3039    o few fix (mask in shap_s2, EmPmR in external_field_load,
3040      USE_NATURAL_BCS in solve_for_P);
3041    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
3042    
3043    checkpoint44b_pre/_post
3044    o merge of relevant stuff from the ecco-branch:
3045      - genmake: removed $S64 overwrite for case SunOS
3046      - pkg/exf: update and corrections for field swapping and obcs
3047      - pkg/ecco: parameter lists for the_model_main, the_main_loop
3048                  harmonized between ECCO and MITgcm
3049      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
3050                      updated checkpointing_lev... lists for obcs
3051      - model/src: minor changes in forward_step, plot_field
3052                   added directive for divided adjoint in the_main_loop
3053      - pkg/mdsio: added mdsio_gl_slice
3054    
3055    o check parameters & config (chkpt44a_pre,post)
3056    o OBC and NonLin_FrSurf.
3057    
3058    checkpoint44
3059    o fix bug in mom_vi_del2uv
3060    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
3061    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
3062    o update AIM experiments (NCEP input files)
3063    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
3064    o added some stuff for AD
3065    
3066    checkpoint43
3067    o added two new advection tests
3068    o added global 4x4 degree ocean test
3069    o added test of H&S94 with free surface on cube
3070    o some final mods for gradient check, adjoint,...
3071    
3072    checkpoint42
3073      Fixed AD-related problems:
3074    o Store directives up-to-date with re-arranged Adams-Bashforth
3075      (mainly thermodynamics.F)
3076    o New store directives for multi-dim. advection schemes
3077      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
3078      * new common block and key passkey
3079      (mainly gad_advection.F)
3080    o Modified store directives for split of dynamics/thermodynamics
3081      for the case ALLOW_KPP
3082    o Cleaned argument list for timestep_tracer.F
3083    
3084    checkpoint41
3085    o re-formatted/added comments in prologues of key subroutines
3086      to work with protex
3087    
3088    checkpoint40
3089    o moved calc_gs, calc_gt and calc_tr1 back to model/src
3090    o added FLT (floats) package from Arne along with demo. experiment
3091    o re-arranged Adams-Bashforth scheme for tracers to allow easier
3092      implementation of forward-in-time forcing terms
3093    o more mods for non-linear free-surface including new variable
3094    o modified multi-dim method to work on cube
3095    o bug fix in KPP (from DM)
3096    
3097    checkpoint40pre9
3098    o added DST advection schemes
3099    o fix MPI bug on SGI's
3100    o modifications for non-linear free-surface
3101    o fixed conditionals for fixed flow/passive tracer only mode
3102    o added tension/strain form of stress tensor
3103    o changes to commenting of arguments for TAF/TAMC
3104    o added/updated many matlab scripts
3105    o added multi-dimensional advection method for tracers
3106      
3107    checkpoint40pre8
3108    o new package rw/
3109      Added method for dumping intermediate local arrays:
3110      mdsio_writetile - same as mdsio_writefield except works from inside
3111                        bi,bj loop
3112      mdsio_writelocal - same as mdsio_writetile except works for local
3113                         arrays
3114      write_local_r? - higher-level wrapper for mdsio_writelocal
3115      Controlled by diagFreq. Defaults to zero (ie. no dumps)
3116      Example given at end of mom_vecinv.F that dumps some local arrays.
3117    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
3118      control flux-form versus vector invariant code.
3119      Switch is runtime flag vectorInvariantMomentum (defaults to false)
3120      or genmake -DISABLE ...
3121    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
3122      (additional storing is now needed for case vecinv;
3123      currently nothing implemented to switch this storing off
3124      in case fluxform is used since no CPP flag available).
3125    
3126    checkpoint40pre7
3127    o bug fix in dynamics.F
3128      calc_viscosity called before k=1,Nr loop.
3129    o added some #ifdef's ALLOW_PASSIVE_TRACER
3130    o cleaned initialisations in ctrl_map_ini
3131      related to TAF
3132    
3133    checkpoint40pre6
3134    o split dynamics into thermodynamics & dynamics
3135    o corresponding split of calc_diffusivity into
3136      calc_diffusivity, calc_viscosity
3137      (kpp_calc_diff, kpp_calc_visc).
3138    o Added diffkr, kapgm to control variables
3139    o bug fix in gmredi_slope_limit for ldd97
3140    
3141    checkpoint40pre5
3142    o proper initialization of Adams-Bashforth time stepping
3143      + uses forward step for very first step of model (iter=0)
3144    o re-generated *all* output since almost all output is modified by this
3145      change (sorry but we've been putting this one off for about 2 years)
3146      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
3147        *not* regenerated since they are already out of date and I don't
3148        want to create the impression that they are suddenly working.
3149    o removed KAP stuff for DEC's
3150    o modified/added many .cvsignore files in */code and */input
3151    o added new expt "solid-body.cs-32x32x1"
3152      + this uses an alternative form of ini_curvilinear_grid.F which
3153        is not necessarily any better than the current one...
3154    
3155    checkpoint40pre4
3156    o added re-initialisations of utrans,vtrans,rtrans in
3157      calc_common_factors which are crucial for TAF.
3158    o extended iMin,jMin range for calc_common_factors,
3159      calc_diffusivity
3160    o added option ALLOW_PASSIVE_TRACER
3161    o a few minor updates and fixes
3162    
3163    checkpoint40pre3
3164    o created calc_gtr1.F for gad package
3165    o split the_main_loop and re-introduced forward_step
3166    o some recomputations of nIter0 for TAMC
3167    
3168    checkpoint40pre2
3169    o Updated to latest branch of AJA, JMC
3170    o Added gradient check package
3171    o Added routines for passive tracer handling
3172    o Added carbon sequestration sensitivity experiment
3173    
3174    checkpoint39
3175     o Modifications and fixes to support TAMC
3176       (mainly missing or wrong directives)
3177     o Corrected common blocks when fooling TAMC to produce adjoint I/O
3178       in addummy_in_stepping
3179     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
3180     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
3181     o Included following packages:
3182       cal: calendar
3183       exf: external forcing
3184       ecco: essential routines to control use of cal, exf
3185             (NB: this is not the full ECCO environment)
3186     o disabled some packages by default in genmake
3187    
3188    checkpoint38
3189     o see notes_c37_adj.txt
3190     o corrected wrong layer index in external_forcing_t
3191     o replaced the_main_loop/forward_step by the_main_loop
3192     o removed forceoutput from write_state
3193       (replaced criteria for initial/final state)
3194     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
3195    
3196    checkpoint37
3197     o mdsio.F routine split and packaged in pkg/mdsio
3198       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
3199        used unless genmake -disable=mdsio)
3200     o allow a more precise surface-geopotential gradient for the atmosphere
3201       taking into account the change in space of Alpha (=1/rho) at the surface.
3202     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
3203       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
3204     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
3205       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
3206       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
3207     o Time-Average diagnostics defined as a pseudo package "timeave".
3208     o pickup files : old pickup (before c35) did not work with new code (c35
3209       and after) unless activating 2 commented lines in initialise-varia.
3210     o Non-Hydrostatic pickup file Pb fixed.
3211     o bug with Rigid-lid version (since c35) fixed.  
3212    
3213    checkpoint36
3214     o implement Crank-Nickelson barotropic time-stepping
3215     o recover Time-Average diagnostics
3216     o fix Pb in checkpoint (PR#19)
3217     o AIM become a standard package ; clean unused CPP_kees
3218    
3219    checkpoint35
3220     o subtantial rewrite of dynamics.f
3221     o allows staggered time-stepping
3222     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
3223     o added bottom drag (linear + quadratic)
3224    
3225    checkpoint34
3226     o Modified exchange routines for correct reverse simulation.
3227     o Added verification output to comply with bug fix in impldiff.F
3228       as of c33 (exp2, natl_box).
3229     o Corrected store directives in dynamics.F
3230     o Corrected array boundaries in impldiff.F
3231     o Corrected array dimensions in gmredi.
3232       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
3233     o Added routine GLOBAL_SUM_INT to global_sum.F
3234     o Added mdsio_gl.F for ECCO purposes.
3235    
3236  checkpoint33  checkpoint33
3237   o Fixed bug in lower BC in impldiff.F   o Fixed bug in lower BC in impldiff.F
3238   o Fixed confusion about units of forcing arrays in FFIELDS.h   o Fixed confusion about units of forcing arrays in FFIELDS.h

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