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revision 1.32 by adcroft, Thu Nov 30 16:51:40 2000 UTC revision 1.845 by jmc, Thu Jun 21 18:34:24 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 gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
8      scheme and the corresponding test case (under front_relax dir). For now,
9      only available with Skew-flux form and not yet tested in realistic set-up.
10    o seaice adjoint
11      * add AREA, HEFF, HSNOW as control variable
12        (should not change lab_sea results)
13      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
14    
15    checkpoint59d
16    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
17     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
18     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
19    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
20     and change default value of parameter "GM_Small_Number";
21     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
22       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
23       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
24    o pkg/ecco: cost function when applying pkg/smooth to controls
25    o pkg/ctrl: add forcingPrecond run time parameter
26    o pkg/seaice:
27     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
28     - fix bug in metric terms of u-equation in LSR solver (implicit part),
29       changes verification/lab_sea
30     - rearrange implicit part of u-equation in LSR solver to make it easier to
31       read, understand, and debug. This causes changes at the truncation level.
32     - fix (serious) bug in the boundary conditions (sign error in the implicit
33       part) of the LSR solver. Changes all LSR results.
34     - fixed problem with HSNOW initialization to avoid thick snow when AREA
35       is initilized with small values - does not change lab_sea results.
36     - added HsnowFile initialization capability
37    o pkg/smooth: addition to model/src and pkg/ctrl so allow
38     initialization of pkg/smooth and application to control vector
39    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
40    o dependencies: pkg/profiles requires pkg/cal
41    o pkg/profiles:
42     - added option ALLOW_PROFILES_GENERICGRID
43         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
44         that interpolation information (grid points and coefficients) is provided
45         within the netcdf input files.
46         -> sample matlab scripts can be found in MITgcm_contrib/gael
47         that allow you to prepare netcdf input files.
48     - also modified: cleaner include statements, cleaner error print statements,
49       cleaner stops when error, and more tests of the netcdf input files consistency.
50    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
51    o pkg/seaice:
52     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
53       requires a new routine: seaice_diagnostics_fill.F
54     - make sure that seaice does not move if not forced (pressure replacement
55       method, Hibler and Ip, 1995), changes results
56     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
57     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
58       It is turned off by default (=-1.), because it changes the results.
59     - make it possible to read AREA from a file, too.
60    
61    checkpoint59c
62    o add S/R and diagnostics for oceanic mixed-layer depth
63    o move GMRedi call after all vertical mixing schemes (including KPP)
64    o pkg/thsice:
65     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
66      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
67    o pkg/obcs:
68     - bug fix for balance code
69    o pkg/seaice:
70      - allow values of SEAICE_elasticParm > 1
71      - add new parameter SEAICE_evpTauRelax as an alternative
72        to SEAICE_elasticParm
73      - make lsr boundary conditions free slip (by default), changes result
74      - add code for no slip boundary conditions for lsr
75      - set minimum of zeta to zero (and not 4e8) (changes results)
76      - add a cap on AREA after advecting AREA if seaice_growth is not called
77    o change calculation of Visbeck K:
78      - no longer depend on tapering scheme; instead, compute slope (limited
79        by GM_maxSlope). this is equivalent to what was comuted before with
80        clipping or linear tappering.
81      - fix vertical averaging (wrong by 1/2 level)
82      - leave the old version (but will not be maintained) within
83        #ifdef OLD_VISBECK_CALC / #endif
84      - update output of exp. ideal_2D_oce
85    o change error catch in calc_r_star to improve vectorization
86    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
87      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
88    o adjoint:
89      Re-organized adjoint checkpointing according to Matt Mazloff
90      (but with modifs/completions/cleanups)
91      Storing is now bundled into large arrays to optimized I/O
92      (and second step in cleanup of the_main_loop)
93    
94    checkpoint59b
95    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
96      - export/import (between ocean & coupler) fields needed for ocean DIC.
97    o pkg/seaice:
98      - get rid of three more exchanges seaice_calc_viscosities (required
99        different loop boundaries in seaice_lsr and seaice_ocean_stress)
100      - bug fix in seaice_ocean_stress (update of lab_sea required)
101      - reduce loop boundaries to necessary minimum also in seaice_evp
102      - go back to the old way of computing deltaC/Z as the adjoint likes that
103        better
104    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
105      passive tracer to an Age Tracer) + update output.txt
106    o pkg/exf:
107      - implement A-grid / C-grid selection for wind-stress input files.
108      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
109      for now, in exf_bulk_largeyeager04.F only :
110      - change implementation for case where windspeed + 2. components wind-stress
111        are read-in. AND use rhoConstFresh to convert evap.
112    o pkg/seaice:
113      - use correct EXCH_UV for wind-forcing (on A-grid).
114      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
115        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
116    o pkg/exf:
117      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
118      EXF_INTERPOLATION:
119      - merge global_with_exf/code version of exf_interp_read.F
120        to the main code ;
121      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
122        reading the file ; Important: This options needs to be defined to recover
123        previous code.
124        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
125      - no longer loose real*8 precision along the way when using exf_iprec=64.
126    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
127      - change discretisation of evp-solver in order to avoid another exchange
128        (changes lab_sea) and clean up a little
129      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
130        help the adjoint (this also changes the results slightly)
131      - add a few "_d 0" where they had been missing in seaice_evp.F
132      - cleaning up: remove unused seaice_calc_rhs.F
133    o pkg/exf: some cleaning-up:
134      - change various "constants" into runtime parameters
135      - cleaned-up Large&Yeager04 routine which should eventually
136        replace exf_bulkformulae.F (changed names of S/R and CPP)
137        and merged various ALLOW_ATM_WIND options
138     only used with thsice pkg (in thsice_get_exf.F):
139      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
140        which are used when useStabilityFct_overIce=TRUE (= the default)
141      - change default values of ice & snow emissivity and scale downward LW
142        by ice & snow emissivity.
143    o pkg/thsice:
144     fix few little problems, in thsice_calc_thickn.F:
145      - growth vertically (and not laterally) if iceFrac == iceMaskMax
146      - melt only laterally if hIce < hThinIce (as the comments say)
147      and in thsice_extend.F:
148      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
149      - start to form ice as soon as the minimum ice-volume is reachable.
150     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
151      and cpl_aim+ocn
152    o pkg/kpp
153     - move computation of surface related input fields to KPP into a new
154       subroutine kpp_forcing_surf.F
155     - remove wrong (within bi,bj loops) EXCH calls.
156     - little cleaning (add argument myThid in last position, cvs header ...)
157     - for now, fix conservation problem by exchanging KPPviscAz (may not
158       be the best fix)
159    o pkg/seaice
160     - check for inconsistent evp parameter/cpp-flag combination
161     - remove leftover errIO flat for obsolete name list error handling
162    o OpenAD
163     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
164    
165    checkpoint59a
166    o pkg/seaice: some parameter clarifications and a little bit of clean up
167    o pkg/thsice: rename run-time parameters:
168       himin       -> hIceMin
169       himin0      -> hThinIce
170       hihig       -> hThickIce
171       i0          -> i0swFrac
172       transCoef   -> bMeltCoef
173       frac_energy -> fracMelting
174      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
175       with default values (for now) that do not change the results.
176      remove old version of thsice vars advection in pkg/seaice.
177    o in FFIELDS.h:
178      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
179      - make pLoad & sIceLoad always available (but still only used if
180         ATMOSPHERIC_LOADING is #define).
181    o pkg/kpp: replaced _KPP_RL with _RL
182    o bug fixes for vertical diffusivity computations when both KPP and
183        3D diffusivity arrays are used.
184    o pkg/seaice: fix bug in evp solver, while doing that
185      - change (improve?) discretization of stress computations for both
186        cgrid-lsr and evp solver
187      - add a new routine to compute strain rates
188      - the above changes lab_sea results
189      - add no slip conditions for evp solver (off by default), lsr-version
190        may follow
191      - fix exchange for shear at Z-points (does not change lab_sea)
192      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
193        (to force the user to pick a time step since there is not "safe" way
194        of choosing it)
195      - add principal stress diagnostics
196      - rearrange fields for evp a little to avoid having to call a: too many
197        exchanges and b: exchanges for stress trensor components which we do
198        not have.
199      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
200        of evp, complete rewrite for lsr case (latter is does not yet work
201        in all cases)
202    o pkg/kpp: add code to have mixing in shelf ice caverns
203      - add myThid to all kpp routines (long overdue)
204    
205    checkpoint59
206    o pkg/exf:
207      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
208        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
209      - move exf header files from lower_case.h to UPPER_CASE.h ;
210        add missing cvs Header & Name
211      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
212      - add namelist param. selectStressGridPosition, exf_monFreq
213      - retire many _CLIM routines, and remove data.exf_clim
214        + params moved to data.exf
215        + climsst, climsss now handled by exf_set_gen, i.e.
216          climss?period=0 refers to constant field,
217          climss?period=-12 to monthly forcing
218      - split up namelists in data.exf
219    o pkg/seaice:
220      - remove seaice_exch and seaice_exch_uv
221      - remove superfluous exchange of theta
222      - add myThid to seaice_budget_ocean/ice
223      - add new interface for atmospheric wind forcing (C-grid only)
224        + new routine
225        + two new field (taux, tauy for stress over ice)
226        + removed one global field (DAIRN) for C-grid case only
227    o pkg/thsise
228      - 2nd set of modifs for thsice adjoint in conjunction with exf
229    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
230    
231    checkpoint58y_post
232    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
233      vertical diffusivity, similar to that in MOM4; turned on using
234      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
235      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
236    o Added capability for 3D specification of background vertical diffusion
237      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
238      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
239      "data" file that contains the 3D vertical diffusivity coefficients.
240    o ice dynamics (pkg/seaice) with thsice thermodynamics:
241      - add code within pkg thsice to advect & diffuse sea-ice fields
242      similar to (and will replace) what has been added in  seaice_advdiff.F,
243      but: - conserving Mass, Heat & Salt.
244           - better when using non-linear advection scheme (not yet fully tested)
245           - can also be used in atmospheric set-up (for now, only the diffusion).
246    
247    checkpoint58x_post
248    o IO option for global-file compact format:
249      - add options when generating topology (utils/exch2/matlab-topology-generator)
250      - add I/O capability (pkg/mdsio).
251      - adapt utils/matlab/rdmds.m to read this format.
252      for now long-line format not yet supported by pkg/mdsio (& exch2).
253    o shelfice: add a few diagnostics
254    
255    checkpoint58w_post
256    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
257      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
258      (and replace horiVertRatio in NH code).
259      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
260                         and tutorial_plume_on_slope (sensitive to truncation)
261    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
262      directly to drive seaice model (C-grid only)
263    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
264     - reintroduce computation of wind from stress,
265     - compute tau (in exf_bulkformulae.F) from windstress averaged to
266       mass points to avoid tau = 0
267     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
268    o rdmnc.m: make it work with "global" files created with gluemnc
269    o rdmnc.m : some improvements in dealing with singleton dimension
270      (tested on all testreport mnc output files).
271    o genmake2: disable pkg/profiles if netcdf test fails.
272    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
273    o move call to cal_readparms up to make calendar parameters/variable available
274      to all packages
275    
276    checkpoint58v_post
277    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
278      useDynP_inEos_Zc tested.
279    o pkg/exf: changes to properly interpolate/mask/scale initial fields
280    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
281      and portions thereof.  See read_cs.txt for description and examples.
282    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
283      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
284      following the great-circle arc between those 2 points.
285    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
286      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
287    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
288     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
289     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
290     - still needs work (not working with some options ; efficiency to improve)
291       and serious testing.
292     - use this scheme for temperature & salinity in 2 advection test exp.:
293       advect_xy & advect_xz, respectively.
294    
295    checkpoint58u_post
296    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
297    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
298    o testreport: add option "-skipdir" to skip some test.
299    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
300      momentum calculation.
301    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
302    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
303      remove checkpoint.F and the_correction_step.F (no longer used);
304      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
305    o add option (linFSConserveTr) to correct for tracer source/sink due to
306      Linear Free surface
307    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
308    o pkg/thsice: fix reading mnc-pickups
309    
310    checkpoint58t_post
311    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
312    o pkg/mdsio:
313     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
314       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
315       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
316     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
317     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
318       either MDS_READ_FIELD or MDS_WRITE_FIELD )
319     - new S/R (to replace MDSWRITEMETA), which allows to write more
320       informations (variable names, time ...) to meta files.
321     - modify rdmds.m to give back the meta file content.
322    o pkg/diagnostics: change vertical interpolation to be safer, and more
323       flexible (define p-levels to interpolate to in data.diagnostics);
324      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
325       diagnostic pointer.
326    o pkg/seaice: more cleaning up of seaice_growth, added many comments
327    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
328    o fix multi-category seaice:
329     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
330       SEAICE_MULTICATEGORY
331     - fix short wave heat flux
332    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
333       and allow to use EVP solver. Change forward lab_sea: test both EVP
334       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
335    o Initial check-in of lab_sea adjoint
336      (very similar to natl_box_adjoint/code_seaice)
337      * used C-grid and EVP solver
338      * used KPP, GM/Redi
339      * uses inAdExact=.TRUE.
340      * gradient checks fail for both ADM and TLM
341        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
342        f.d. gradients actually seem more problematic than ADM, TLM gradients;
343        issue is related to forward mismatch between g77 an ifort
344    o pkg/seaice: overhaul of thermodynamics
345     - growth.F and groatb.F are replaced by new routine seaice_growth.F
346     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
347     - move a few global fields out of SEAICE.h into seaice_growth.F and
348       make them 2D (FICE/QNETO/ ...)
349     - remove FO (it is the same as QNETO)
350     - introduce a few local fields to avoid modifying external fields such
351       as atemp, etc.
352    
353    checkpoint58s_post
354    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
355      changed exf_set_gen.F so that
356        genperiod=0 means input file is one time-constant field and
357        genperiod=-12 means input file contains 12 monthly means
358    o CG2D: use pre-computed solver main-diagonal (stored in common block);
359      this affects truncation error ; generate new output file for exp. which
360      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
361        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
362        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
363        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
364        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
365        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
366    o start implementation of deep-atmosphere and anelastic formulation
367    o verification: remove 2nd copy of input files and use script "prepare_run"
368      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
369    o mom_common/vecinv/fluxform: fix a few initialisation isssues
370    o profiles: fix for multithreaded case
371    
372    o diagnostics: rename few diags:
373      s/'PRESSURE'/'RCENTER '/g
374      s/'TICE    '/'oceFreez'/g
375      s/'TAUX    '/'oceTAUX '/g
376      s/'TAUY    '/'oceTAUY '/g
377      s/'SWFLUX  '/'oceQsw  '/g
378      s/DIFx/DFxE/g
379      s/DIFy/DFyE/g
380      and add few ocean-forcing diagnostics:
381      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
382    o modifications to pkg/seaice/growth.F and budget.F, which change results of
383      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
384      as actual snow thickness.  It now refers everywhere to effective snow
385      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
386    
387    checkpoint58r_post
388    o modifications to pkg/seaice/growth.F, which change results of
389      lab_sea experiment: fixes pertain to melting snow over open water, to
390      masking EVAP under sea ice, and to using the correct AREA variable for
391      computations of EVAP, PRECIP, HSNOW, and GHEFF
392    o add ability to read bathy, salt, and theta using MNC (off by def)
393    o add flooding algorithm and advection of HSNOW for pkg/seaice;
394      both are turned off by default and do no change any results
395    o seaice advection with pkg/thsice: a step toward the use of non-linear
396      advection scheme, but #ifdef or commented out for now (requires more EXCH).
397    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
398      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
399      in natl_box (affects results @ truncation level: update output.txt)
400    o multi-threading and IO:
401      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
402      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
403        (needed to work with SingleCpuIO): tested in all verif. exp.
404    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
405      affects the results (but none of the verification test uses this scheme).
406    o Adding some pkg/diagnostics capability to pkg/seaice
407      (will certainly be subject to changes)
408    o ctrl: adding new control variables:
409      lwflux, lwdown, evap, snowprecip, apressure, runoff
410    
411    checkpoint58q_post
412    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
413      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
414      high_res_cube configuration by 4% on Columbia.
415    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
416      add (in global_with_exf/code) a version of EXF_INTERP_READ without
417      dynamical allocation (seems to work in multi-threaded).
418    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
419      single CPU io) so that TAF does not have to see EESUPPORT.h
420    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
421    
422    checkpoint58p_post
423    o obcs: stop if obcs is used with useCDscheme = .true.
424    o shelfice:
425     - fix a sign error so that no slip at shelfice interface works
426     - remove stop for combination non-hydrostatic code and shelfice. That does
427       not mean, that the results are correct, but at least they are numerically
428       stable
429    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
430    o added adjoint exch routined for all exch*3d* routines
431      and updated flow directives
432    
433    checkpoint58o_post
434    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
435      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
436    o change controling S/R for writing pickup file (new S/R do_write_pickup)
437      and clean-up reading/writing of pickup files.
438    o fix local version of read/write pickup (NH part) in rotating_tank/code
439    o simplify EXCH interface:
440     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
441     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
442    o added the regrid package
443    o shelfice:
444     - add a simple boundary layer scheme to reduce noise
445     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
446    
447    checkpoint58n_post
448    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
449       local variable (not in common block).
450    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
451      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
452      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
453        to work with SingleCpuIO.
454    o add "_d 0" to real constant of pkg/cfc subroutines ;
455       update exp. cfc_exemple & tutorial_cfc_offline output files.
456    o multi-threading and IO:
457      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
458        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
459      - barrier before and after reading.
460      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
461      - avoid using MDS_WRITELOCAL for LAND pkg output.
462      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
463        common-block variables ; Allows multi-threading with master-thread IO.
464    o change default MAX_NO_THREADS from 32 to 4 ;
465      and stop cleanly when MAX_NO_THREADS is too small.
466    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
467    
468    checkpoint58m_post
469    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
470       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
471    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
472       keep global_ocean.90x40x15 (for AD testing) with former secondary test
473       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
474    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
475        add MITgcm_tutorials (= code + all the tutorials)
476    o ecco, option to compute cost for total ssh (mean+anom)
477    o consistent with addition of ptracer and ssh in pkg/profiles
478    o profiles: adding ptracer and ssh
479    o testreport: change multi-test output-file name
480      (from output.txt.{name} to output.{name}.txt)
481    o profiles: now ok for mutli-tiles case
482    o seaice: add 4 parameters for different advection schemes for area,
483      (effective) seaice thickness, enthalphy, and snow height. Their default
484      is the standard parameter SEAICEadvScheme
485    o calc_gw:
486     - add cosFacU in zonal viscous flux (harmonic.visc.).
487     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
488       of tutorial_plume_on_slope.
489    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
490    o calc_gw: true flux-form, account for horizontal grid spacing.
491      update rotating_tank results, but not plume_on_slope (affected at
492      truncation level, 11 digits).
493    
494    checkpoint58l_post
495    o calc_gw:
496     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
497     - remove side-drag for now (need to fix it); update plume_on_slope results.
498     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
499    o commit code to make SST/SSS weights spatially variable
500      (based on either variable in-situ or variable initial T/S weights)
501    o pkg/ecco:
502      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
503        now based on horizontally varying weights wthetaLev, wsaltLev
504      * cost_averagesflags now returns year indices in addition to day, month
505      * sflux balance is performed on annual basis
506        (sflxumm, sfluxmm2, bal_sfluxmm)
507      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
508        including separate counting and multipliers
509    o pkg/rbcs
510      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
511    
512    checkpoint58k_post
513    o testreport:
514     - always build in dir. "build" (if not there, mkdir build instead of building
515       & running in input)
516     - run in dir run (if it exists), in build otherwise.
517     - call prepare_run (if input/prepare_run exists)
518     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
519    o pkg/exf modifications to interpolation and rotation routines for more
520       reasonable treatment of North Pole singularity: for tracers North Pole
521       value is set to northernmost zonal-mean value, for zonal velocity it is
522       set to zero, and for meridional velocity it is set to northernmost value.
523    o pkg/exf/exf_check_range.F
524     - add tile index to diagnostics and move stop statement to the very
525       end of the routine.
526    o pkg/diagnostics: (diagnostics_main_init.F)
527      define title of isomorphic variables according to the current config.
528    o pkg/thsice with pkg/seaice dynamics:
529    - fix domain of computation (interior only, required for exf) and do exchanges
530    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
531    o towards a standard way of dealing with multi-threading in MONITOR
532      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
533    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
534       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
535    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
536    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
537    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
538       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
539    o tracer advection:
540     - clean-up and simplify calc_common_factors.F
541     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
542       advection subroutine (but still not used within DST advection S/R)
543    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
544    
545    checkpoint58j_post
546    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
547      from file (collects calls previously in FORWARD_STEP)
548    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
549    o adjoint store dir. adjusted accordingly
550    o genmake2
551      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
552    
553    checkpoint58i_post
554    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
555      on wind stress (SEAICEstressFactor defaults to 1.)
556    o Total number of Timers is finite (<=40): comment out 2 non-essential one
557      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
558    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
559      on CS-grid: no longer loosing mass.
560    o exf & curvilinear-grid: no longer modify longitude xC & xG.
561    o pkg/ggl90: fix sloppy output and fix a bug
562    o pkg/seaice: added SEAICEuseEVPpickup parameter
563      - Set to false in order to start EVP solver with
564        non-EVP pickup files when using SEAICEuseEVP
565      - fix sign error in diffusion in seaice_calc_rhs
566    
567    checkpoint58h_post
568    * Modifications for bottom topography control
569      o replace hFacC by _hFacC at various places
570      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
571      o add non-self-adjoint cg2d_nsa
572      o update autodiff support routines
573      o re-initialise hfac after ctrl_depth_ini
574      o works for 5x5 box, doesnt work for global_ocean.90x40x15
575    * Adding verification for 5x5 box (4-layer) bottom topography control
576    
577    checkpoint58g_post
578    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
579       used for mean seasonal cycle, mean diurnal cycle); add an example
580       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
581    o pkg/ggl90:
582      - add parameter (minimum surface kinetic energy)
583      - fix bug (avoiding division by zero)
584    o couple pkg/thsice to pkg/seaice:
585      - modify advection in seaice to accomodate new scalar fields to be advected
586      - only muliDimAdection scheme work with seaice/thsice
587      - mapping of thsice-variables to seaice-variables, back and forth
588      - does not break the verification experiments, but does not give the
589        desired results either
590    o pkg/seaice
591      - make (default) second order advection a bit less confusing?
592    
593    checkpoint58f_post
594    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
595      to pkg/seaice):
596      - new routines thsice_map_exf and thsice_get_exf provide the interface
597      - add an additional formal parameter to thsice_solve4temp
598    o pkg/exf:
599      - add new fields wspeed, snowprecip (to be able to couple to thsice)
600      - correct Stefan-Boltzmann constant
601      - new parameter for longwave surface emittance
602      - separate some stuff from exf_bulkformulae into new routines  
603        exf_radiation, exf_wind
604      - add new parameters and constants: longwave emissivity for ocean, ice
605        and snow, evaporation parameters over ice
606      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
607        either wind from stress or stress from wind
608    o pkg/thSIce:
609    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
610    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
611       and THSICE_CALC_THICKN
612    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
613    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
614      to make debugging easier.
615    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
616    o pkg/bulk_force:
617      - clean-up comments and parameters ;
618      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
619    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
620      generate new output for test-experiment: aim.5l_cs.thSI
621    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
622      testreport accordingly
623    
624    checkpoint58e_post
625    o SEAICE_CGRID adjoint done
626    o R_STAR adjoint implemented.
627      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
628      * need to sort out init. of h0facc, etc.
629    o Make pkg/profile fully independent of ecco,cost, etc. stuff
630      to be able to use it in pure forward.
631    
632    checkpoint58d_post
633    o upgrade simple test-experiment to tutorial example:
634     step.1: duplicate the experiment and (step.2) will remove the old copy.
635      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
636      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
637      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
638      tutorial_global_oce_biogeo    <- copy of dic_example
639      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
640      tutorial_plume_on_slope       <- copy of plume_on_slope
641      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
642      tutorial_global_oce_optim     <- empty for now (David ?)
643      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
644     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
645    o correct a sign problem in cost_scat.F
646    o obcs and ptracers: fix boundary conditions for advections schemes
647      with larger stencil
648    o thsice adjoint: start
649    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
650      completeness
651    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
652      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
653    o ptracers adjoint:
654      * avoid extensive recomputatations
655      * fix missing re-init. of gptr (missed by TAF)
656    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
657      me to turn off the excessive output to STDOUT that this package produces
658    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
659      and add those terms in Vector-Invariant formulation.
660    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
661      if the control period (xx_hfluxperiod etc) is 0
662    o in profiles pkg, clean routines and fix details
663    o in ecco pkg, reading ssh data:
664      fix problem in case the model does not start at iter0=0
665    o fix mnc-pickup/restart for ptracers
666    o new package prifiles:
667      code to compute profile-based cost by Gael Forget
668      (modifs in ecco, ctrl, autodiff)
669    o Benign bug fix in initialization (spotted by M. Mazloff) of
670      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
671    
672    checkpoint58c_post
673    o adjoint: finish NLFS adjoint and provide reference output in
674      verification/global_ocean.90x40x15/results_ad_nlfs
675    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
676      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
677      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
678      with SEAICE_CGRID defined.
679    o move calendarDumps from "data" to "data.cal" and clean-up the code
680      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
681    o add useEXF & useCAL flags (for now, set in hard-coded way)
682    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
683      (were missing in NH mode, and wrong in quasihydrostatic mode).
684      waiting for Chris updated version of calc_gw to add those CALLs.
685    o fix bug in quasihydrostatic S/R ;
686      add a test for this option: global_ocean.90x40x15.qshyd
687    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
688      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
689    o add on/off flag useOffLine for package OFFLINE
690    o seaice:
691      - modify advection so that it works also on the C-grid
692      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
693        problem in multi-tile runs with C-grid
694      - add flags for clipping ice velocities and/or masking solver forcing
695      - fix drag (ocean on ice) formulation and a bug that caused noise in the
696        C-grid solver
697      - added a few comments to seaice_diffusion.F
698      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
699        are now exclusive)
700      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
701        required re-ordering the code a little:
702       + make DAIRN global variable (defined in SEAICE)
703       + move computation of the viscosities eta and zeta into a new separate
704         routine (because I need to recompute them in seaice_ocean_stress.F)
705    
706    checkpoint58b_post
707    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
708      update output.txt of exp. aim.5l_cs.thSI
709    o various mnc cleanups and improvements:
710      + shrink lookup tables by factor of ~4
711      + better error reporting when running out of lookup space
712      + able to handle longer path/file names (up to 500 chars)
713    o adjoint:
714      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
715      - TBD: "hidden" mom_vecinv recomp. in dynamics
716    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
717     (allow to differentiate between forcing components using new integer flags:
718      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
719     and add new flag to put Dissipation tendency out of Adams-Bashforth.
720    o ecco
721      - enable trend removal from SSH anomaly obs.
722    o adjoint
723      - a fix for PmEpR when #undef EXACT_CONSERV
724      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
725      - try to fix "hidden" recomp. in forward_step for NLFS
726        (NLFS seems broken sometimes after I checked it in)
727    o seaice:
728     - add c-grid version of the dynamic solver:
729       + three new routines that are the c-grid substitute lsr, dynsolver
730         and ostres
731       + put a few fields that were local to dynsolver into global common
732         blocks, so that I can move the computation of stresses etc into
733         seaice_lsr (saves coding but may break the adjoint).
734     - replace more hardwired parameters by runtime parameters
735     - add ice masks that mask the rhs of the implicit solvers where there
736       is no ice (commented out in seaice_dynsolver, because i am not sure
737       if this works properly), eventually this should replace the clipping
738       of ice velocities in seaice_dynsolver to +/-40cm/s.
739    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
740      include it only where its needed
741    o move balancing of fluxes before the call of external_forcing_surf
742    o seaice:
743      - correct units of turning angles (now they are really in degrees)
744      - move computation of GWATX/Y out of main routine into dynsolver
745      - initialize GWATX/Y in seaice_init
746    o Apply mask on Fresh-Water flux (needed for SSH forcing).
747      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
748    o seaice: add runtime flags for turning angles (default to zero)
749    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
750      and trend from exf forcing and ctrl control adjustments
751    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
752      (since checkpoint57x_post)
753    o change the default rotation period to 86164.s = the Earth rotation
754    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
755      and based on a reference stratification. Tested within hs94.cs-32x32x5.
756    o seaice advection: add code for choosing between the default (2nd order
757      central differences) and multiDim advection schemes provided by
758      pkg/generic_advdiff
759    o seaice:
760      - removed all references to SEAICE_GRID.h fields from
761        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
762        (cubed-sphere configuration will change a little)
763      - grid computations in seaice_init are obsolete now.
764      - cleaned up code a little so that is easier to read (hopefully).
765      - added new (better?) discretizations of default advection and diffusion
766        (turn on with SEAICEuseFluxForm)
767      - replace 1 in 3d global fields by kSurface in growth.F
768      
769    checkpoint58a_post
770    o seaice:
771      - bug fix in advect.F
772    o shelfice:
773      - separate shelfice load anomaly from pload (breaks with time
774        dependent forcing), => introduce constant field shelficeLoadAnomaly.
775        Its default is 0., but it may be computed more cleverly from (unknown)
776        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
777        done offline. A good approximation of the pressure load anomaly is
778        necessary to avoid large initial adjustment processes underneath
779        deep-reaching shelfice.
780      - small fix in ISOMIP shelfice_thermodynamics
781      - add more sophisticated thermodynamics of Hellmer (1989), this is
782        now the default
783      - give a few constants more intuitive names
784    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
785      if bulk formulae are used in long integration (especially EmPmR). Turn
786      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
787      if balancePrintMean, the imbalance that is substracted is printed to
788      STDOUT.
789    o fix bug (typo) in obcs_apply_eta.F
790    o add a new package shelfice which enables us to model the circulation
791      underneath shelf-ice with draughts of hundreds of meters.
792     - works
793     - to do: + include improved thermodynamics
794              + check whether kSurfC (from model/inc/SURFACE.h) can be used
795                instead of new field kTopC
796              + can we use topoFile, Ro_surf and existing code in ini_depth.F
797                instead of new field R_shelfIce and new code in ini_depth.F
798                and ini_mask_etc.F?
799              + adjust vertical mixing schemes?
800    o seaice pkg:
801     - add a cpp-flag to include a simple formula for a salinity dependent
802       freezing point of sea water at the surface
803     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
804       meridional stresses are now different (and hopefully correct)
805    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
806       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
807       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
808    o pkg/diagnostics: add options and parameters for regional-statistics
809       diagnostics ; define regions by reading a region-mask from a file
810       (might add other options later)
811    o pkg/bulk_force:
812     - add option and parameters to use AIM surface-flux formulae.
813     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
814       others forcing fields (defined in PARM05, parameter file "data") are loaded
815       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
816     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
817     - use the right EXCH call for uwind,vwind (to work on CS-grid).
818     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
819       and parameters (note: calcWindStress replaces .NOT.readwindstress).
820     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
821    
822    checkpoint58
823    o add "--embed-source" option to genmake2 which, when the supporting
824      tools can be compiled (as determined by genmake2) will turn on the
825      embed_files package which then embeds the entire MITgcm source code
826      (*.[fFhc] + Makefile) used for the build within the executable
827      - requested by CNH but off by default
828      - adds a paltry <9MB to the mitgcmuv executable in most cases
829      - only writes the output when useEMBEDSRC in eedata is true
830    o clean up 3-dim. relaxation codes:
831      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
832      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
833      * Thanks to Tom Haine for testing!
834    
835    checkpoint57z_post
836    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
837      affects output (@ truncation level) of exp. plume_on_slope ; updated.
838    o fix the pickup behavior for obcs in combination with ptracers
839    o fix a bug in ptracers_external_fields_load
840    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
841      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
842    o transfered surface NH pressure to eta field (if exactConserv).
843    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
844         and update lab_sea output.txt file.
845    o completing 3-dim. relaxation code: additional term
846         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
847      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
848      * At compile time, in "EXF_OPTIONS.h" set
849          #define  ALLOW_CLIMTEMP_RELAXATION
850          #define  ALLOW_CLIMSALT_RELAXATION
851      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
852          tauThetaClimRelax3Dim = 15552000.0,
853          tauSaltClimRelax3Dim  = 15552000.0,
854      * 3 cases:
855          1) Use a constant-in-time 3-dim. field
856          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
857          3) Real-time relax. to time-evolving prescribed field
858    o Adding Laplacian-type smoothness constraint on
859      initial and boundary (forcing) controls (ic, bc)
860      * enable at compile-time via
861        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
862      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
863      * Absolute scale somewhat unclear so far
864      * no area weighting was included since no other cost term does so far
865    
866    checkpoint57y_post
867    First step for a NLFS adjoint
868    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
869    o new init. routines for calc_r_star, calc_surf_dr
870    o still need to deal with ini_masks_etc
871    o testreport seemed happy
872    checkpoint57y_pre
873    
874    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
875    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
876    o add new offset feature to offline pkg (plus minor cleanup)
877    o cfc fixes for final year of integration
878    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
879      be in GCHEM_OPTIONS).
880    
881    checkpoint57x_post
882    o fix testreport Pb in multiple test experiment.
883    o cleanup our namelist syntax in verification:
884      - make it more F95 standards compliant (some work still needed)
885      - allows the vast majority of our tests to work with gfortran
886    o Non-Hydrostatic:
887     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
888     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
889    o Allow to apply AB on T,S rather than on AB(gT,gS):
890     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
891     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
892       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
893     - need a "clever" read_pickup to restart from the other AB formulation
894    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
895    o remove some unused variables (reduces number of compiler warnings)
896    o adjoint
897      * Disable useVariableViscosity for adjoint for time being
898        (there are a number of extensive recomputations)
899      * Initialize certain variables needed for adjoint
900    
901    checkpoint57w_post
902    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
903                 fix the singleCpuIO RS version of MDSWRITEFIELD
904       and add a WARNING if using globalFiles=T with multi-processors.
905    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
906      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
907    o tracer advection scheme:
908      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
909       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
910       was not very convenient).
911      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
912       (further tests needed for the implicit DST & Flux-Limiter schemes).
913    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
914      and sRef for convenience, handy, when you want to initialize
915      ptracers in a large domain with a constant non-zero value. Also,
916      untangle ptracers_init.F a little.
917    
918    checkpoint57v_post
919    o change dome exp. to use variable viscosity in side-drag terms.
920    o remove all the files from the cfc_offline test since they are now
921      incorporated into tutorial_cfc_offline which has been producing
922      identical results for a few days of testing
923    o add new parameter: sideDragFactor to enable half-slip-side BC
924      and change side-drag S/R to use viscosity from mom_calc_visc
925      (can switch back by setting sideDragFactor=0.); affects results at
926      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
927       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
928    o vorticity & strain are now computed without masking, to account for
929      no-slip-side BC in variable viscosity calculation ; mask is applied
930      anyway later on, before computing advection/coriolis terms.
931    o modify exp4 to test new obcs support for reading from external files
932      and for passive tracers
933    o fix behavior of ptracers_monitor when monitor output is written to a
934      netcdf-file; still not independent of monitor.F (writes in the same
935      file).
936    o change default value of tRef (put a uniform, meaningful value for ocean
937      & atmos) and initialize sRef (was missing, as Martin mentioned).
938    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
939      to be proportional to enstrophy dissipation length.  Thus,
940       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
941      This is now consistent with Smagorinsky and with the manual.
942    
943    checkpoint57u_post
944    o OBCS and PTRACERS: add open boundary support for passive tracers
945      - either use homogenous (pseudo) v.Neumann conditions or prescribe
946        OB-values from file; this is not different from the way theta and salinity
947        are treated
948      - however, Orlanski-radiation conditions are not supported, and the model
949        will stop if you use pTracers and Orlanski at the same time.
950      - beefed up the rountine obcs_external_fields_load: now only those open
951        boundary values are overwritten with values from files for which there
952        are really files, otherwise the OB-fields remain untouched. This makes
953        it possible to use different OBs at different ends of the domain (as
954        with EXF)
955    o reduce number of exch calls in shap_filt (s2).
956    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
957      truncation level) 4/5 MLAdjust test results (11&12 digits match).
958    
959    checkpoint57t_post
960    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
961    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
962      same truncation, independent of the face number: affects affects several
963      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
964    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
965      note that biharmonic viscosity + no-slip was not tested in any experiment.
966    o fix bug in non-linear free-surf side-drag ; generate new output for
967      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
968    o make mnc honor the writeBinaryPrec flag for most kinds of output
969    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
970    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
971      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
972    o add brackets in multi-terms sum to get same truncation, independent of
973      the face number (manage to get exactly same value of gU,gV at the cs-edge)
974      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
975    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
976      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
977      a maximum grid-scale Reynolds number.  Also, changes all length calculations
978      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
979      Suggested values of viscosity parameters found in mom_calc_visc.
980      Many new viscosity diagnostics available.
981    
982    checkpoint57s_post
983    o Add clearing-house for viscosity calculations, mom_calc_visc and
984      correct numerous bugs in LeithD and Smagorinsky discretizations.  
985      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
986      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
987      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
988      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
989      The Strain-Tension form is now called with useStrainTensonVisc=.true.
990      ViscAhStrain and viscAhTension are now retired.
991    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
992    o In response to JMC's bug report, genmake2 now ignores any soft-links
993      that it finds in the *current* directory when searching for files.
994      Soft-links found in any other source directories will still work as
995      they did before.
996    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
997      a C routine to unlimit the stack size
998    o mnc-ify pkg/aim snapshot vars
999    o mnc-ify pkg/land as requested by Daniel
1000    o various changes to mnc including:
1001      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1002      - output can now be grouped so that all files within a group
1003          change the ITER portion of their names in lock-step together
1004      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1005          and works with both EXCH1 and EXCH2 (but needs more testing)
1006      - writing works for all verification test cases w/ g77 on Linux
1007    
1008    checkpoint57r_post
1009    o make MNC variable initialization happen earlier
1010    o add diagnostics for (almost) each term of the momentum Eq.
1011    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1012    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1013    o remove MINIMAL_TAVE_OUTPUT option ;
1014      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1015    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1016      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1017    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1018    o add time-dependent SST, SSS control
1019    o cost terms in ecco/ modularized (new cost_generic.F)
1020    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1021    o new infrastructure for seaice model vs. obs misfits in seaice/
1022      * driver from the_main_loop.F is seaice_cost_driver.F
1023      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1024      * gradient check in Exp. 6a of natl_box_adjoint/
1025    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1026      (see README file)
1027    
1028    checkpoint57q_post
1029    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1030    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1031      - bug was reported by Jean-Michel and Ian Fenty
1032    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1033      update exp. cpl_aim+ocn output.
1034    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1035      Needed for high-res. runs with large global files
1036      to be able to limit tapelev size
1037    o Changed some tests for adjoint:
1038      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1039      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1040      * global_ocean.90x40x15/ back to default 3-level checkpointing
1041    o Modifications to enable scripted COMMON to MODULE conversion
1042      * verification/OpenAD/code/ has necessary scripts and description;
1043      * converts, compiles and runs successfully;
1044    
1045    checkpoint57p_post
1046    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1047    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1048      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1049    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1050    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1051      (was already the case for dissipation with mom_vecinv,
1052       and also the case for grad.PhiHyd when staggered-timeStep)
1053      This will allow to put dissipation out-off the AB time-stepping.
1054     Unfortunately, affects truncation error. Update output of exp. that "fails"
1055      (cg2d matching number) and leave the others for later: front_relax(10),
1056      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1057      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1058    
1059    checkpoint57o_post
1060    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1061      (2) its ready to be documented during the 20050801 DocFest
1062    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1063      for ideal_2D_oce and lab_sea on linux_ia32_g77
1064    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1065      in global1x1_tot/code_seaice_adj to access indices 32, 33
1066      (worth another tag)
1067    
1068    checkpoint57n_post
1069    o adding precip control xx_precip 32
1070    o adding swflux control xx_swflux 33
1071    o Replacing 10 forcing penalty cost routines by 1 generic.
1072    o Implementing partitioning in time-mean and variable adjustment
1073      for atmos. state.
1074    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1075    o in natl_box_adjoint:
1076      * updated exp 1 to 10
1077        (but does not have time-mean vs. variable split results yet)
1078    o updated global1x1/*_seaice_adj/
1079      to incorporate latest changes
1080    o enable useSingleCpuIO for mdsio vector routines
1081      (applies in particular to tapelev I/O)
1082    o removed inefficient K-loop in all active_file*control*.F
1083    
1084    checkpoint57m_post
1085    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1086      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1087    o pkg/exch2: filling of face-corner halo regions is optional
1088      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1089    
1090    checkpoint57l_post
1091     tag before updating tutorials (pre-release-2)
1092    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1093       for output and interpolation of input fields onto model grid)
1094    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1095       Affects results of exp. rotating_tank ; update output.txt.
1096    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1097          and taking the square quantity and/or using a fraction-weight field.
1098    o fix aim_diagnostics_init.F mate numbers.
1099    o add mnc output capability to diagnostics/diagstat and update
1100      our cvsignore files for the ACSII output generated
1101    
1102    checkpoint57k_post
1103    o lab_sea now uses diagnostics package and provides a suite of
1104      new EXF diagnostics output.
1105    
1106    checkpoint57j_post
1107    o exf
1108      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1109        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1110        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1111      * extended diagnostics output
1112        - now includes all EXF variables
1113        - hs, hl moved to common block
1114        - separate S/R for diagnostics, called after ctrl vector is added
1115        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1116        - EXFqnet contains true Qnet (i.e. includes qsw)
1117      * updated verif. lab_sea, global_with_exf
1118      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1119        to ensure that diagnostics sees a true EXFqnet
1120    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1121    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1122      several times with different frequencies.
1123    o mnc-ify the thsice package as requested by Daniel Enderton
1124      - the monitor--MNC output needs work
1125      - many attributes need to be added (most are currently blank)
1126    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1127      - many attributes need to be added (most are currently blank)
1128    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1129    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1130    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1131      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1132         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1133    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1134     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1135    
1136    checkpoint57i_post
1137    o Diagnostics package was changed: diagnostic allocation is now deactivated
1138      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1139    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1140      add 1rst Order upwind vertical Shear.
1141    o add a quick fix for A/B checkpointing in OFFLINE mode
1142    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1143      end-run around the C/Fortran linking horror in eesup/src/timers.F
1144    o added pkg/runclock: allows user to terminate run based on wall clock
1145    o added non-hydrostatic scaling parameter: nh_am2
1146    o pkg/my82: futile attempt to make results compiler-independent by adding
1147      some "_d 0", etc. no effect.
1148    o for mnc output, fill the 'T' coordinate var with myTime and create a
1149      separate 'iter' variable for iteration count
1150    o pkg/diagnostics:
1151      add new capability: output of Global/Regional & per-level statistics ;
1152      tested against monitor output (including land & thSIce) on various exp.
1153    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1154    
1155    checkpoint57h_done
1156      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1157      data.diagnostics, data.gchem, data.ptracers) is done.
1158    
1159    o pkg/diagnostics: prepare for Global/Regional statistics.
1160      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1161    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1162      and rename it: DIFFERENT_MULTIPLE
1163    
1164    checkpoint57h_post
1165    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1166    o pkg/diagnostics: change output frequency, now in seconds (instead
1167      of Nb of iterations). This requires to change data.diagnostics.
1168    checkpoint57h_pre
1169    
1170    o in mnc, let the user create the output dir if both mnc_outdir_date
1171      and mnc_outdir_num are false
1172    o add fflags() to pkg/diagnostics which allows one to specify, on a
1173      per-file basis, the file precision [default behavior is unchanged]
1174    o added diagnostics to pkg/kpp, including computation of mixed layer
1175      depth based on a temperature/density criterion
1176    o updated verification/natl_box to test the new pkg/kpp diagnostics
1177    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1178    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1179    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1180      not mnc -- this mistake was found by JMC and is now corrected
1181    
1182    checkpoint57g_post
1183    o add Adams-Bashforth 3rd Order time stepping:
1184      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1185      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1186    checkpoint57g_pre
1187    
1188    o make lambda[Theta,Salt]ClimRelax spatially varying
1189      (default remains spatially uniform constant based on tau)
1190    o added new control variables
1191      * init. uVel, vVel, etanN
1192      * lambda[Theta,Salt]ClimRelax
1193    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1194      (suggested by G. Forget)
1195    
1196    checkpoint57f_post
1197    o add parameter "baseTime" = model base time = time at iteration zero
1198      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1199      account for baseTime shift
1200    o move Coriolis arrays from PARAMS.h to GRID.h
1201    checkpoint57f_pre
1202    
1203    o mnc-ifying the seaice package
1204    o introduced an alternative length scale calculation for use in the limiting
1205      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1206    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1207    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1208      as well as grad(vort3).  Made it compatible with both approximate form
1209      for the cubed sphere and full form of these gradients.  Added flag
1210      useFullLeith to select between approximate and full form.  
1211    o add "d0" in getcon.F to reduce differences between compilers/platforms
1212      update output.txt of exp. fizhi-gridalt-hs
1213    o change port_rand funtion to allow to set the seed.
1214    o fix obscure MNC bug involving conversion between reals and integers
1215      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1216        new version is now more standards-compliant
1217    o adjoint-related modifications
1218      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1219      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1220      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1221    
1222    checkpoint57e_post
1223    o Adding eddy stress controls a la Ferreira et al.
1224    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1225    
1226    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1227      update output.txt of exp. fizhi-gridalt-hs
1228    o add more "Z" dimensions and associated coordinate vars to MNC
1229    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1230    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1231      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1232      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1233      months and years.  Requires pkg/cal.
1234    o diagnostics: add pickup functionality
1235      - off by default for backwards compatibility
1236      - current version only uses MDSIO -- MNC will be added
1237    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1238    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1239    
1240    checkpoint57d_post
1241    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1242    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1243      output from the diagnostics package
1244    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1245    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1246      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1247    o add coordinate variables to the MNC output from the diagnostics package
1248    o change MNC-flags default value: true when useMNC=TRUE
1249    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1250      the ability (off by default) to read the grid information using MNC
1251    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1252    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1253    o do snap-shot diagnostics at the middle of the time-interval (instead of
1254      at the end).
1255    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1256      new test for AIM with thSIce + slab-ocean
1257    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1258    o move state variable diagnostics to the beginning of the time step ;
1259      (note: still needs some work specially for snap-shot diagnostics)
1260      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1261    
1262    checkpoint57c_post
1263    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1264    o generate new output.txt files on faulks with g77 & the new -ieee option
1265    checkpoint57c_pre
1266    
1267    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1268      update output.txt of exp. global_ocean.90x40x15
1269    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1270      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1271    o add saltFlux(+File) forcing capability with periodicExternalForcing
1272    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1273    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1274    o improvements for the MNC output from DIAGNOSTICS:
1275      - correct handling of the unlimitied dimension
1276      - all dims now have associated coordinate variables
1277      - variables located at U, V, and Corner ("Z") points are now written
1278        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1279        *all* data points are output
1280    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1281    o added pkg/seaice/seaice_monitor.F
1282    o mdsio_readfield.F can now read files visible only to master MPI process.
1283    o pkg/seaice: some test code for ice-modified ocean stress
1284    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1285      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1286      spurious negative numbers for precipitation and humidity.  Will cause
1287      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1288    o pkg/ctrl/
1289      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1290        May be enabled via doPackDiag
1291      *  introduce z-scaling of
1292         + gradient (doZscalePack) and
1293         + control (doZscaleUnpack)
1294    o pkg/mdsio/
1295      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1296      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1297    
1298    checkpoint57b_post
1299    o simplify options in diagnostics_fill arguments (remove weird combinations)
1300    o fix MNC coordinate variables so that they now contain per-face index
1301      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1302      general, EXCH2 grids are only aligned to a "local" coordinate system
1303    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1304    o Implement instantaneous output within pkg diagnostics:
1305      setting a negative frequency in data.diagnostics produces
1306     "snap-shot" output (as opposed to time-average if freq > 0)
1307    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1308      NOTE: change ptracer diagnostics name: use 2 characters to work with
1309            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1310    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1311      becomes the coordinate variable for the 'T' dimension
1312    o add CF-style coordinate variables to MNC
1313      - just a first cut:  numbers are meaningless on the cubesphere and
1314        missing along the T axis but otherwise it works!
1315    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1316    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1317    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1318      this is based directly on what the model compute, so that the content of
1319      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1320    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1321    o clean up build options files for SunOS, in particular
1322      - remove -traditional from xmakedepend
1323      - change -xarch=v9 to -xarch=native for f77
1324      - restore use of make (not gmake)
1325      - add CC=gcc if using g77
1326    o changes per discussion of AM, JMC, & EH3 today:
1327      - move redundant "grid" variables out of "state" -- in preparation of
1328        creating proper CF-style coordinate variables and in recognition
1329        that any/all grid variables can be easily copied (eg. w/NCO) from
1330        the grid files into any of the other NetCDF files
1331      - *always* output grid variables with MDSIO (this will eventually be
1332        changed)
1333      - output MNC grid file if useMNC is true
1334    o every instance of _END_MASTER() has been found and replaced with
1335      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1336      preprocessors
1337    o re-arrange diagnostics pkg initialisation:
1338     - allow each package to extend the available diagnostics list
1339     - add some checking and fix small problems (multi-threaded, ...)
1340     - new S/R diagnostics_fill (replace fill_diagnostics):
1341       look through the short list of active diag. (instead of the long list)
1342       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1343    
1344    checkpoint57a_post
1345    o this set of changes restores TAMC compatibility
1346      tested for global_ocean.90x40x15 adjoint on trough
1347      (what a pain)
1348    
1349    checkpoint57a_pre
1350    o some modifs in tools/build_options for sunos
1351    o call ctrl_pack for ctrl at end for optimcycle=0
1352    
1353    checkpoint57
1354    o add horizontal bi-harmonic viscosity for vertical velocity
1355      - new parameter viscA4W (defaults to viscA4)
1356      - affects only non-hydrostatic code
1357      - to be done: no-slip lateral boundary conditions
1358    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1359    o implement Implicit Vertical advection for pTracers
1360    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1361      (implemented also for implicit vertical diffusion & advection)
1362    o OBCS: extend application of tracer open boundary conditions
1363      to a strip beyond the boundary of width Olx/Oly
1364    o add call monitor to TAF set of required calls (flow directives)
1365      and include in natl_box_adjoint
1366    o untangle a few ifdefs related to cost, ctrl, autodiff
1367      untangel a few ALLOW_ECCO_OPTIMIZATION
1368    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1369      (theta2, salt2 in ecco_cost_weights)
1370    
1371    checkpoint56c_post
1372    o OBCS as control variables
1373      - update ctrl_ad_diff.list, obcs_ad_diff.list
1374      - remove balance of obcs controls from default
1375      - fix index bug nobcs in ctrl_init
1376      - fix dummy fields filen in ctrl_pack
1377      - add dummy weights for obcs
1378    o lsopt: comment out fort.94 output
1379    o optim:
1380      - remove unnecessary header files
1381      - adjusted namelists
1382      - add xerbla.F to Makefile
1383    o exf:
1384      - multiple modifications of exf_check_range
1385      - unit change in exf_init_runoff from [m/year] to [m/s]
1386    o mdsio:
1387      - i/o-vector change debugLevel from debLevA to debLevB
1388    
1389    checkpoint56b_post
1390    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1391      is called from DO_THE_MODEL_IO
1392      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1393      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1394      - clean up PTRACERS_WRITE_TIMEAVE a little
1395    o add another verification experiment that tests both the cfc-pkg and
1396      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1397      reactive tendencies treated inline with regular timestepping
1398    o testreport previously did a lousy job of comparing small numbers, so
1399      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1400      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1401      testreport.
1402    o ptracers_monitor: bug fix for MPI
1403    
1404    checkpoint56a_post
1405    o GCHEM: finish reorganizating the package
1406      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1407        (introduces another 3D-array for each passive tracer, but only if
1408        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1409        gchemTendency is not needed because the timestep is done separately)
1410      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1411      - GCHEM is now---more or less cleanly---separate from PTRACERS
1412      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1413        so clear to me how that should be done in a general way.
1414    o CFC: improve formatting of output in CFC_ATMOS
1415    o PTRACERS:
1416      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1417        that ALL experiments with ptracers enable can be checked. This makes
1418        GCHEM_MONITOR obsolete.
1419      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1420        monitorFreq
1421      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1422    o add PTRACERS (PTR0[1-5]) to testreport output
1423    o exf_check_range:
1424      * default changed to .TRUE.
1425      * will check values for niter0 if debLevA, every timestep if debLevB
1426      * STOP in exf_check_range if 'out of range'
1427      * range chosen generous to allow for potential extema
1428      TBD: a version with stricter range
1429           permitted range would be runtime parameters
1430    o GMredi:
1431      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1432      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1433      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1434    o GCHEM:
1435      - move call to GCHEM_FORCING_SEP, so that it is now called before
1436        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1437      - introduced a useGCHEM runtime flag and applied it everywhere.
1438      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1439        this flag is now only visible within GCHEM-pkg routines.
1440      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1441        be replaced by a 3D array that is computed before thermodynamics; for
1442        this, the tracer ID iTracer had to be included into the parameter list
1443        of ptracers_forcing
1444      - set up forward_step to call gchem_forcing, that will replace
1445        gchem_forcing_int in ptracers_forcing
1446      - cleaning up
1447    o small cleaning of exch2: remove files that are also in eesupp/src
1448    
1449    checkpoint56
1450    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1451    o mnc: cleanup "full" files--fixes out-of-memory problem
1452    o ECCO-GODAE
1453      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1454      * fully merged and updated from SIO code
1455        windstress sign change affects
1456        - exf_inscal_[u/v]stress
1457        - sign of xx_tau[u/v] adjustments
1458        - signs in cost_scat
1459      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1460      * natl_box_adjoint updated and compressed
1461      * 2-level checkpoint switch added
1462        (tested in EXP. 1 of natl_box_adjoint)
1463      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1464    o SVD
1465      * first complete, non-hacked version for SVD calculations
1466      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1467        performed via direct access files admtlm_vector.it????
1468        (via ctrl_[un]pack)
1469      * optimcycle is used for ARPACK iteration counter
1470        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1471      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1472        and add linear transforms where necessary
1473      * controls are initial/final SST, SSS (can be extended; need to check
1474        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1475    o mdsio: filename info to both stderr, stdout
1476    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1477      from sign change
1478    
1479    checkpoint55j_post
1480    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1481      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1482    o add consistent build directories and .cvsignore files to verification
1483    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1484    o make all subroutines 30 or less characters in length for certain older
1485      compilers to work (a thorough search only turns up two routines in
1486      pkg/ptracers)
1487    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1488      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1489    
1490    checkpoint55i_post
1491    o change arrays for total vertical diffusivity (2.D if explicit,
1492      3.D if implicit) ; each ptracer uses its own background value.
1493    o added mnc/NetCDF output capability to ocn_compon_interf
1494      - added bits to verification/cpl_aim+ocn so that it can run on
1495        ITRDA and other clusters without the mpirun "-wd" option
1496    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1497      configuration
1498    o give MNC the ability to create additional files rather than
1499      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1500      - the default is just less than 2GB which is a practical limit
1501        on many systems
1502    o Compute the non-local term using either KPP vertical diffusivity (=default)
1503       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1504    
1505    checkpoint55h_post
1506    o add verification test "vermix"
1507    o remove all the *_ioinc flags and replace with the single global
1508      outputTypesInclusive flag
1509    o allow to set a vertical profile of vertical diffusivity for T & S
1510    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1511    o useMNC moved from data.mnc to data.pkg
1512    
1513    checkpoint55g_post
1514    o Renaming carbon AD experiments to comply with testreport conventions
1515    o Updating adjoint of Held-Suarez hs94.1x64x5
1516    o Fixing directives for non-ECCO forward_step, after ECCO directives
1517      have been fixed to avoid recomp. of do_oceanic_phys
1518      Works well for global_ocean.90x40x15,
1519      but recomp. issue remains for carbon
1520    o Updating adjoint output for natl_box_adjoint after
1521      pkg/ecco has been modified (see taga c55d_post)
1522    
1523    checkpoint55f_post
1524    o rename to timeave_init_fixed
1525    
1526    checkpoint55e_post
1527    o some delicate re-shuffle of store directives to avoid one
1528      extra call of do_oceanic_physics
1529      affects ecco_the_main_loop.F, do_oceanic_physics.F
1530      checkpoint_lev1_directives.h
1531    o NB: this may break global_ocean adjoint temporarily,
1532      but it is clear how to fix it. Will do later, need this now.
1533    
1534    checkpoint55d_post
1535    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1536    o ecco_cost_weights is modified to 1x1 runs
1537    o modifs to allow observations to be read in as
1538      single file or yearly files
1539    o enable to read exf forcing fields as either
1540      single file or yearly files (flag useExfYearlyFields)
1541    checkpoint55d_pre
1542    
1543    o switch between 2-level and 3-level checkpointing
1544    o add ability of MNC to write local and "partial" (eg. 2D slices where
1545      the full 3D field is never actually stored) arrays to NetCDF files
1546      with the correct (that is, the complete multi-dimensional) set of
1547      array indicies
1548      - used in mom_vecinv() to write the diagFreq output
1549      - tested (demonstrated) in verification/aim.5l_cs
1550    o further mnc-ification
1551      - add verification/lab_sea to the list with mnc setups
1552      - fix undefined mnc v-names in cd_code
1553      - add kpp to mnc output (both snapshot and timeave)
1554    o non-hydrostatic code
1555      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1556        in calc_gw.F
1557      - defaults to viscAh
1558      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1559        friction or Leith) in non-hydrostatic mode, as long as there is
1560        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1561    o pkg/cost
1562      extend simple cost functions to treat time mean quantities
1563      (T,U,V) via cost_accumulate_state from cost_tile
1564    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1565        be 2 times larger than the minimum size the advection scheme requires.
1566        now get a perfect conservation of salt in advect_cs test-exp (updated)
1567    o GGL90 (Gaspar's TKE mixed layer)
1568      - add horizontal diffusion of TKE, requires exchanges in
1569        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1570        default. In OPA there is no horizontal diffusion of TKE but the
1571        mixing coefficients are computed from a horizontal average of TKE of
1572        6 points or so. I think that diffusion has a little more physical
1573        justification.
1574      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1575        was in vain)
1576      - mask tke-variable in ggl90_init
1577    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1578    o fix biharmonic diffusion on CS-grid.
1579    o more obcs stuff
1580      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1581        for reading boundary values. This routine is called from
1582        obcs_prescribe_read
1583      - updated obcs_check
1584      - changed sponge layer relaxation parameter units for days to seconds
1585      - turned off sponge layer by default
1586      - changed argument list of OBCS_CALC to myTime+deltaTclock
1587      - fixed about 35 bugs in obcs_external_fields_load
1588    
1589    checkpoint55c_post
1590    o obcs stuff
1591      - new runtime flags useOBCSprescribe, useOBCSbalance
1592      - re-arranged obcs_calc
1593      - moved exf_getobcs to obcs_prescibe_read
1594        obcs_prescibe_read is called after ORLANSKI stuff
1595        and independent of it (executable can contain all).
1596      - updated obcs_check
1597      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1598        These may be necessary only if tangential velocities are
1599        prescribed at OB, not sure, needs testing.
1600    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1601      which simplifies the calls and passes the ifc check-bounds test
1602    
1603    checkpoint55b_post
1604    o add a 2D scalar, Z location, exchange_2 routine.
1605    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1606      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1607      affects advect_cs results (for the wrong reason): update output.txt
1608    o use a more standard discretization for biharmonic viscosity ;
1609     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1610      affects results of dome set-up: update output.txt
1611    o fix gad_advection.F (CubedSphere part), back to version 1.23
1612    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1613    
1614    checkpoint55a_post
1615    o merged code to
1616      * prescribe/read time-dependent open boundaries
1617        (works in conjunction with exf, cal)
1618      * sponge layer code for open boundaries
1619      * each boundary N/S/E/W now has its own CPP option
1620        (healthy for the adjoint)
1621    
1622    checkpoint55
1623    o up-to-date adjoint of previous breaks
1624      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1625      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1626      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1627      - carbon: * remove tr1-related adjoint verification
1628                * add ptracer as control variable
1629    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1630      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1631    
1632    checkpoint54f_post
1633    o in verification/carbin/ remove experiment related to
1634      ALLOW_PASSIVE_TRACER (array tr1 etc)
1635      code_ad/ input_ad/ results_ad
1636    
1637    o add two new packages
1638      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1639        + subject to optimization (memory)
1640      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1641        + subject to reordering (many GOTOs in the original code)
1642        + so far opps is called for every (i,j) point, and then operates in
1643          the vertical; one may want to reorder the scheme in order operate in
1644          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1645          fields)
1646    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1647      - all verification tests compile and run with linux_ia32_g77
1648      - defaults are compatible with current input files--nothing
1649        should change if you were not previously using MNC
1650      - MNC output has been added in numerous places (eg. timeave)
1651        but there are still a few writes not yet do-able with MNC
1652        (this is in progress)
1653      - flags now allow for either/or/both use of MDSIO and MNC and
1654        documentation will soon follow
1655      - numerous small formatting cleanups for ProTeX
1656    o add version info (via BUILD_INFO.h) to MNC and stdout
1657    
1658    checkpoint54e_post
1659    o add two new packages
1660      - pp81 (Packanowski and Philander, 1981), Richardson number and
1661        stratification dependent mixing
1662      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1663      - these scheme operate in a similar manner as KPP (without ghat, of
1664        course), however there is only one diffusivity that is used for both
1665        temperature and salinity (and passive tracers)ç
1666    o add offline package
1667    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1668      provided by Stephanie Dutkiewicz
1669    o genmake2: add ability to search for C compilers and cleanup test output
1670      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1671    
1672    checkpoint54d_post
1673    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1674    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1675      leading to additional shift by 5 days each year of integration
1676       (i.e. leading to considerable offset over the years)
1677    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1678    o start with no AB and no initial filtering (staggerTimeStep):
1679      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1680    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1681      (external loading & cpl import/export stay in forward_step.F)
1682    o update coupling interface to work with new staggerTimeStep
1683    o change MDSIO ptracers_pickup.
1684    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1685    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1686    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1687    
1688    checkpoint54c_post
1689    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1690      this affects (truncation error) output.txt of test-exp:
1691       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1692    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1693    o change Qnet to always be the net heat flux, (+upward).
1694      affects (truncation error) output of natl_box exp.: updated
1695    o define the max number of passive tracers in PTRACERS_SIZE.h
1696    o start to test mnc routinely in exp0
1697    o add sea-ice loading (sIceLoad) as a new forcing field.
1698    
1699    checkpoint54b_post
1700    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1701       impressive on Altix and Opteron systems)
1702    o diagnostics can now write NetCDF files through the mnc package
1703    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1704    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1705    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1706      affects (truncation error) output of lab_sea & natl_box exp.: updated
1707    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1708    
1709    checkpoint54a_post
1710    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1711    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1712    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1713    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1714      + internal_wave (shift in writing cg2d_ini_res)
1715    checkpoint54a_pre
1716    
1717    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1718      - modified verification/lab_sea and natl_box_adjoint accordingly
1719    
1720    checkpoint54
1721    checkpoint53g_post
1722    o prepare splitting of thermodynamics: store convect.counter in common block
1723    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1724      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1725    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1726    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1727    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1728    o restore adjointability
1729    
1730    checkpoint53f_post
1731    o modifications that affect AIM experiment results (update output.txt):
1732      - no advection of S at top interface Nr (pkg/generic_advdiff)
1733      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1734    o AIM pkg:
1735      - include stability function into surf.Flux derivative relative to Tsurf
1736      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1737    
1738    checkpoint53e_post
1739    o merged cylindrical coord configuration
1740    o added rotating_tank experiment
1741    checkpoint53e_pre
1742    
1743    checkpoint53d_post
1744    o faulks upgraded: re-generate output.txt that have changed:
1745       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1746    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1747    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1748    o added Sadourny discretization of Coriolis
1749      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1750      - re-enabled use of omega3 (useAbsVorticity)
1751    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1752      vector-invariant equations
1753      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1754    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1755      hopefully without new bugs
1756      - still to do: biharmonic friction for non-hydrostatic w
1757    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1758    o regenerated output for global_ocean_ebm (using -ieee)
1759    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1760      of mom_common/
1761      - simple re-arrangement of instructions within computing loop
1762    checkpoint53d_pre
1763    
1764    checkpoint53c_post
1765    o new version of coupler for AIM+thSIce and Ocean models
1766     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1767     - land: change Evaporation of snow
1768     - aim with thSIce: fix bug in snow-precip.
1769    o changes to calc_gw.F
1770     - bug fix for w^2 term near the bottom boundary
1771     - (hopefully) improve the lateral slip boundary condtions for use with
1772        partial/looped cells
1773      - because the bug fix changes two verification experiments anyway (exp5
1774        and plume on slope), change the lateral boundary condition from half slip
1775        to the value of no_slip_sides
1776    o ebm package wasnt quite up to the parallel task. Fixed that.
1777    o Adjoint of EBM package + verification
1778      * TLM OK
1779      * ADM not sufficient accuracy yet (needs further testing)
1780    
1781    checkpoint53b_post
1782    o Commiting new energy balance model to repository
1783      * package is pkg/ebm
1784      * verif. is verification/global_ocean_ebm
1785      * references are in ebm_driver.F
1786    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1787    C        Global thermohaline circulation. Part I:
1788    C        Sensitivity to atmospheric moisture transport.
1789    C        J. Climate 12(1), 71-82
1790    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1791    C        Global thermohaline circulation. Part II:
1792    C        Sensitivity with interactive transport.
1793    C        J. Climate 12(1), 83-91
1794    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1795    C        Destabilization of the thermohaline circulation
1796    C        by atmospheric eddy transports.
1797    C        J. Climate 7(12), 1870-1882
1798    o Will need long integration testing.
1799    checkpoint53b_pre
1800    
1801    o created pkg/mom_common in preparation for variable viscosity code
1802    o renamed and split ini_mnc_io
1803    o pkg/land: only liquid water can diffuse or run-off
1804    o AIM using land: soil wetness availability account for snow
1805    o added printMapIncludesZeros to EEPARMS namelist
1806    
1807    checkpoint53a_post
1808    o restore TAMC compatiility for exf_constants.h
1809      (no usage of _d in .h)
1810    o Additional storing in KPP in an attempt to fix
1811      TAMC problem with adjoint of KPP code.
1812      (no success...)
1813      Identical code works fine with TAF.
1814    o Fixed verification/natl_box_adjoint experiments.
1815      Initial conditions for Experiments 4 and 5 are now
1816      set to "SEAICE_initialHEFF=0", which is more reasonable,
1817      and hence gives results closer to that of Experiment 2.
1818      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1819    
1820    checkpoint53
1821    o stable checkpoint with up to date adjoint
1822      TLM tests only run for 1st grdchk at the moment. Its unclear if
1823      this is a code problem or a problem with resetting code for g_
1824      variables that is being autogenerated wrong.
1825      Otherwise:
1826       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1827       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1828         are both still in chaos following their security messes.
1829    
1830    checkpoint52n_post
1831    o various build (mostly genmake2) changes including:
1832      - ability to build/run more easily within Cygwin and MacOS X
1833      - more complicated Makefiles with a stronger dependence on Gnu Make
1834    o pkg/seaice modifications
1835      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1836        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1837        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1838      - changed proxy for geostrophic velocity and updated
1839        verification/lab_sea/results/* accordingly
1840      - removed ADI dynamic solver from pkg/seaice
1841      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1842        they caused a segmentation fault under certain circumstances
1843      - removed unused field WATR
1844    o bug fix in exf-package:
1845      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1846         now reflect that.
1847    o small fixes in the cal-package:
1848      - set reference date to first of January for the 'model'-calendar
1849      - failing of cal_CheckDate in cal_FullDate now actually results in a
1850        warning
1851    o small modifications in exf-package to increase flexibility:
1852      - change climtempfreeze from a constant to a runtime parameter that
1853        is specified in data.exf_clim (default = -1.9)
1854      - introduce runtime parameter windstressmax (default = 2.0) that is
1855        specified in data.exf
1856    o fix in pkg/thsice:
1857      - update Evap (Tsf changes) to be consistent with Latent heat flux
1858      - maintain snow precipitation unchanged (even if Tsf >=0).
1859     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1860    
1861    checkpoint52m_post
1862    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1863      this does not change any of the results, because myIter=0 in swfrac always
1864      lead to jwtype=2 (the default anyway), but the call makes little sense
1865      as a default
1866    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1867    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1868      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1869    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1870    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1871    o extending useSingleCpuIO option to work with new exch2 I/O format
1872      - old-style, missing-tile I/O is still accessible by defining CPP
1873        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1874    o monitor package can write to NetCDF files and/or STDOUT
1875    o fix re-definition bug in MNC_GRID_INIT_ALL()
1876    o doc/api_reference added
1877      - a framework for building an API Reference Manual using all
1878        the "protex" comments embedded in the code
1879      - see pkg/generic_advdiff, pkg/mnc for examples
1880    o MNC:
1881      - make myThid the last argument for all subroutines
1882      - new default for the grid files: NO halos
1883      - add useMNC and other run-time flags
1884      - separate per-file-group handling of the unlimited dimension
1885      - early initialization of MNC w/ flags read at the eeboot stage
1886        and lookup tables set in initialize_fixed
1887      - write all MNC output to a freshly-created directory
1888    o thermodynamics sea-ice (thsice) is now tested with testreport.
1889    o test exp. advect_cs: use the standard cs32 grid ; update output.
1890    o Added functionality to grdchk:
1891      pick global i,j,k position (or nearest wet) where to perform check.
1892    
1893    checkpoint52l_post
1894    o new land formulation:
1895      a) use ground enthalpy as prognostic variable to ensure exact
1896         energy conservation.
1897      b) account for water temperature and for latent heat of freezing
1898         in all processes (rain, run-off, ground storage)
1899      c) compute surface and ground temperature implicitly.
1900    o aim_v23 modification for new land model:
1901      a) Treat separately land / ocean / sea-ice surface fluxes
1902         to allow implicit computation of land & sea-ice surface temp.
1903      b) add snow precipitation.
1904    checkpoint52l_pre
1905    
1906    o fix problem (when 1 tile is empty) in min/max monitor.
1907    o fix bug in timeAve (u,vZetatave in common block)
1908    o no restoring terms under ice for pkg/seaice
1909    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1910    o bug fix for pkg/seaice pickups
1911    o change MNC call locations and add coordinate attributes
1912    o mask vorticity at the corner ; affects global_ocean.cs output
1913    o fix ini_curvilinear_grid ; test CS experiments with mpi
1914    o aim.5l_cs: modify sea-ice fraction input file ; update output
1915    o exf: Adding simple range check routine for exf fields after read
1916    
1917    checkpoint52k_post
1918    o removed top-level directory "diags"
1919      - we migrated these functions to pkg/timeave a long time ago
1920    o fixed bug introduced in pkg/monitor
1921    o accuracy ctrlprec = 32 insuffient for gradient checks using
1922      averaged fields (I/O via cost_averages)
1923      -> use ctrl.h in active_file*.F to control I/O precision.
1924    o paramter list of CALL ADTHE_MAIN_LOOP
1925    o added initial do_the_model_io to ecco
1926    o set all ...Freq to zero after cost_final
1927      taveFreq, dumpFreq, pChkptFreq
1928    o MAIN and ECCO differentiability restored
1929    
1930    checkpoint52j_post
1931    o fix nchklev in tamc.h for global_ocean...
1932    o Bringing flow and store directives up-to-date
1933    o Really weird thing!
1934      call do_the_model_io from the_main_loop with parameters
1935      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1936      TAF places a faulty re-call of initialise_varia
1937      after cost_final call which should not be there!
1938    checkpoint52j_pre
1939    
1940    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1941      error messages
1942    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1943    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1944      debug output
1945    o modfied mdsio_writefield.F to handle non-global files under exch2
1946    o update AIM Cubed-Sphere exp (aim.5l_cs):
1947      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1948    o update AIM Equatorial Channel exp:
1949      use standard aim_v23 pkg and change the SST fields to be more realistic.
1950    o globalFile now works with exch2
1951    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1952      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1953    o limit timeave output for hi-res integrations
1954    
1955    checkpoint52i_post
1956    o removed CPP_EEOPTIONS.h from verification/*/code
1957    o updated the tiling for global_ocean_pressure
1958    checkpoint52i_pre
1959    
1960    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1961      the old pkg/aim).
1962    
1963    checkpoint52h_pre
1964    o shortened offending lines in exch2_send_rx?.template
1965    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1966    o genmake2: add build & execute test for NetCDF code
1967    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1968      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1969    o added useSingleCPUIO flag to monitor.F and mon_out.F
1970    o added temporary hack for sea-ice dynamics on the cube:
1971      metric terms are ignored and it is assumed that
1972      there is no sea-ice on cube faces 1, 2, 4, and 5.
1973    
1974    checkpoint52f_post
1975    o added exch2 cube routines to pkg/exch2
1976    o modified hs94.cs-32x32x5 to use it
1977    o added new grid files to hs94.cs-32x32x5
1978    checkpoint52f_pre
1979    
1980    checkpoint52e_post
1981    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1982      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1983    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1984      to work with implicit vertical advection and AB ;
1985    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1986    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1987     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1988    checkpoint52e_pre
1989    
1990    o fix bug in impldiff when Nr=1 or Nr=2.
1991    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1992    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1993    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1994      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1995    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1996    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1997    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1998    
1999    checkpoint52d_post
2000    o re-tiled many expts to allow comparison in multi-processor mode
2001      - updated output accordingly
2002      - changed hs94.128x64x5 to use intial T from file rather than use the
2003        random number generator
2004    o add infrastructure in model routines for fizhi and gridalt packages
2005    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2006    o changes to permit hi-res, cubed-sphere, configuration
2007      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2008      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2009      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2010        of surface winds for the cube
2011      (A verification experiment, based on global_ocean.cs32x15, but with
2012       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2013       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2014       complete with example surface forcing files and matlab scripts to look
2015       at the output and compare it with that of global_ocean.cs32x15.)
2016    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2017       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2018       to conform to the common rule.
2019    o check-in the first version of the coupler + interfaces for multi-components
2020       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2021       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2022       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2023       - ocean and atmos. share the same horizontal grid (no interpolation).
2024       - exchanges between component and coupler is done in forward_step
2025    o new verification experiment, cpl_aim+ocn:
2026       coupled ocean - AIM atmosphere on cs32 grid.
2027    
2028    checkpoint52d_pre
2029    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2030    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2031    
2032    checkpoint52c_post
2033    o Fixing OPTIONS files for use of exf:
2034      - ALLOW_ECCO not needed
2035      - ECCO_CPPOPTIONS.h should not be included from
2036        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2037        as has been the case in the past
2038      - All cal/exf related options are currently set in
2039        single header file. Should remain so until we
2040        agree on a consistent new policy.
2041    o Removed all CPP options for cal package.
2042      cal has no more CPP options.
2043    o modified STOREs in GAD_ADVECTION
2044    o corrected key comp. for passkey
2045    
2046    checkpoint52b_post
2047    o new version: "thsice" of thermodynamic sea-ice pkg:
2048     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2049     - modify fluxes but do not change theta directly;
2050     - light cleaning of bulk_force pkg (still needed with thsice).
2051     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2052       + output_thsice.txt to test thsice & bulk_force pkgs.
2053    o put back grid & coriolis monitor output.
2054    checkpoint52b_pre
2055    
2056    o call "do_the_model_io" at the beginning (=> dump initial state)
2057    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2058    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2059      (need info on NUMBER_OF_PTRACERS)
2060    o missing PTRACERS headers in some routines
2061    o default tamc.h in pkg/autodiff supposed to crash
2062      to ensure proper customization
2063    
2064    checkpoint52a_post
2065    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2066      - moved surfaceTendencyTice from pkg/seaice to main code
2067      - subroutine FREEZE_SURFACE now limits only surface temperature
2068        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2069        => new output.txt for global_ocean.cs32x15 & global_with_exf
2070      - keep the old version of FREEZE for backward compatibility;
2071        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2072      - corresponding modifs for TAF directives
2073    o added surface flux output variables to TIMEAVE_STATVARS
2074    o time-averaged output for pkg/ptracers
2075    o fix problem with ECCO-related divided adjoint
2076      snapshot file was missing some ad-variables,
2077      but no warning issued by TAF
2078    
2079    checkpoint52a_pre
2080    o some bug fixes for #undef REAL4_IS_SLOW
2081    
2082    checkpoint52 = ecco_c52_e35
2083    o after testing adjoints of checkpoint51u_post
2084    
2085    checkpoint51u_post
2086    o this is the post-merge tag of the ecco-branch
2087      (needs another clean checkout and re-testing)
2088    o various natl_box_adjoint configs and results
2089      but no input fields
2090    o obcs adjoint not yet merged!
2091    o adding ECCO global 1x1 and 2x2 degree configs
2092    o updated/extended some store directives for seaice
2093    o pkg/ecco now containes ecco-specific part of cost function
2094    o top level routines the_main_loop, forward_step
2095      supersede those in model/src/
2096      previous input data.cost now in data.ecco
2097      (new namelist ecco_cost_nml)
2098    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2099    
2100    checkpoint51t_post
2101    o this is the pre-merge tag of the ecco-branch
2102    
2103    checkpoint51s_post
2104    o cleanup: removed various obsolete #define-s
2105    o pkg/grdchk
2106      - renamed 'ph-grd 3' to 'grad-res'
2107      - merged from ecco-branch
2108        (remaining bug fixes for obcs gradient checks)
2109      - additional high-precision output for testreport
2110        (grep for 'precision_grdchk_result')
2111    
2112    checkpoint51r_post
2113    o cleaned up or removed CPP_OPTIONS.h files
2114    o updated results for some of the tests to reflect the new
2115      optfiles (-ieee: -O0 instead of -O3)
2116    
2117    checkpoint51q_post
2118    o cd_code:
2119      - moved cd_scheme.F -> cd_code_scheme.F
2120      - separate read_checkpoint from cd_code_ini_vars.F
2121      - separated cd_code part from write_checkpoint
2122      - updated AD_SOURCE, generated .flow
2123      - added CD_CODE_VARS.h to the_main_loop
2124      - Moving cd_code specific store dir.s to pkg/cd_code
2125    o ctrl package totally restructured
2126      - pack/unpack now optional and decoupled from
2127        xx_/adxx_ I/O
2128      - ctrl_pack/unpack cleaned
2129        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2130      - confined inclusion of AD_CONFIG.h to where necessary.
2131    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2132    
2133    checkpoint51p_post
2134    o create initial cd_code package
2135      - WARNING: the initialization of fields within packages
2136        is broken because INI_FIELDS (where READ_CHECKPOINT is
2137        called) is called *before* PACKAGES_INIT_VARIABLES.
2138        This seems to be backwards since
2139        1) its important to initially zero the entire field including
2140           the "halo" region
2141        2) zeroing needs to be done *before* reading pickup info
2142           and the pickup call might or might not happen in any
2143           particular run
2144      - this needs an overhaul for R2
2145    o cleanup verification/*/code/GMREDI_OPTIONS.h
2146    o cleanup testreport
2147    
2148    checkpoint51o_post
2149    o bringing AD-related verif's up to date with genmake2
2150      - carbon/
2151      - global_ocean.90x40x15/
2152      - hs.94.1x64x5/
2153      - (front_relax/ )
2154    o (more) consistent directory structure for AD-related verif.'s
2155    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2156    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2157    o bug fix in find_alpha.F for MDJWF:
2158      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2159        change rho -> rho-rhoConst
2160      - replace call find_rho to find_rhonum
2161    o initialisation of rFlx extended to full array (required by TAF)
2162      and shifted to thermodynamics
2163    o removed PTRACERS.h in ptracers routine
2164    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2165    o Correcting initialisations for fVerU, fVerV.
2166    o helping TAF to recognize dependency on kUp for
2167      fVerU, fVerV
2168    o Replacing delZ by delR in pkg/ctrl/
2169    checkpoint51o_pre
2170    
2171    o undid all of cp51 pending some cleanups and discussion
2172    o added the [#include "AD_CONFIG.h"] statement to all files that need
2173       it for adjoint/tl #defines
2174     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2175     o removed tools/genmake since it no longer works
2176    
2177    checkpoint51n_post
2178    o modifications to make FREEZE flux visible to pkg/kpp
2179      - moved surfaceTendencyTice from pkg/seaice to main code
2180      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2181      - subroutine FREEZE now limits only surface temperature
2182        (this means new output.txt for global_ocean.90x40x15,
2183         global_ocean.cs32x15, and global_with_exf)
2184    o added surface flux output variables to TIMEAVE_STATVARS
2185    
2186    checkpoint51n_pre
2187    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2188    o added [#include "AD_CONFIG.h"] to all files that use the following
2189      defines:
2190      - ALLOW_ADJOINT_RUN
2191      - ALLOW_TANGENTLINEAR_RUN
2192      - ALLOW_ECCO_OPTIMIZATION
2193    
2194    checkpoint51m_post
2195    o incorporating changes to get TAMC/TAF working in genmake2
2196      - added new TAMC/TAF targets to the Makefile
2197      - various cleanups related to package handling
2198      - these changes should have no impact on the forward model
2199    
2200    checkpoint51l_post
2201    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2202     - faster algorithm for cal_addtime.F
2203     - higher precision arithmetic, where needed
2204     - pkg/exf *startdate variables changed from calendar date to
2205       model integration time
2206    
2207    checkpoint51l_pre
2208    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2209    o enable to apply restoring on S & T only in a latitude band.
2210    o update output (external_forcing_surf modif. change truncation errors)
2211       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2212    
2213    checkpoint51k_post
2214    o change default to: useNHMTerms=.FALSE.
2215     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2216       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2217     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2218        exp1, ideal_2D_oce
2219     - change data file of oceanic exp (leave the results unchanged for now)
2220       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2221    o set gravitySign automatically according to the vertical coordinate used
2222      (and change sign: back to "logical" value: +1 when R increases downward)
2223    o added an include barrier to the default CPP_OPTIONS.h and
2224      removed the #include "PACKAGES_CONFIG.h" from it
2225    o fix a bug in mom_fluxform (from chk51j_post)
2226    
2227    checkpoint51j_post
2228    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2229    o adjusted some flow directives (dynamics, thermodynamics)
2230    o added cubed-sphere case to test cost function
2231    o heckpoint_lev?_directives.h now include
2232      pkg-specific directives, whenever those are enabled.
2233    o Moving pkg-specific flow directives to corresponding pkg
2234      Moving pkg-specific differentiation list to corresponding pkg
2235      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2236      ---> conventions are
2237           - pkg_ad.flow
2238           - pkg_ad_diff.list
2239           - pkg_ad_check_lev?_dir.h
2240    
2241    checkpoint51i_post
2242    o merge of the branch-genmake2
2243      - knowingly breaks the older genmake
2244      - automatic generation of all ALLOW_${PKG_NAME} defines
2245      - new testreport supersedes older testscript
2246    o large number of package inclusion and header cleanups
2247    checkpoint51i_pre
2248    
2249    o new output for adjoin of global ocean vector invariant
2250    o fix for checkpoint of thermodynamic seaice and bulk_force
2251    o Steph gchem various cleanups
2252    
2253    checkpoint 51h_pre
2254    o fixed some single quotes
2255    o modify gchem pkg to be more versatile
2256    o modifications to clean up dic pkg
2257    o add pkg/cfc
2258    
2259    checkpoint51g_post
2260    o provide links for ARPACK and ADM*TLM
2261    o start removing verification/vero/
2262    o update AD-related stuff
2263      (in particular some IF-statements in model/src/ routines)
2264    o adding to verification/global_ocean.90x40x15/ adjoint of
2265      vector invariant setup
2266    
2267    checkpoint51f_post
2268    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2269    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2270      of tracer Green's fucntions for ocean inversion project.
2271    
2272    checkpoint51f_pre
2273    o Added on-the-fly spatial interpolation capability
2274        "USE_EXF_INTERPOLATION" to pkg/exf.
2275      - This is a temporary Cartesian-grid hack until
2276        the super-duper ESMF coupler becomes available.
2277      - See verification/global_with_exf/README for usage example.
2278      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2279        flags and modified pkg/seaice accordingly.
2280    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2281        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2282        non-local transport term.
2283    
2284    checkpoint51e_post
2285    o pkg/mom_vecinv:
2286      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2287      - add time-ave diagnostic of vorticity advection.
2288    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2289    o atmospheric geopotential: - include water vapor effect;
2290                                - use p^kappa in p* scaling.
2291    o land pkg: read initial state from files.
2292    o AIM : add stratospheric drag in the upper level
2293    
2294    checkpoint51d_post
2295    o change function ILNBLNK (=> last non-blank char.) to return zero
2296      (instead of the string length) when the string. char is empty
2297    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2298    o modif's to restore TAMC compatibility
2299      - avoid "_d" constructs in PARAMETER declarations
2300      - avoid interrupting lines by comment lines
2301    o Use cluster local disks for purely local I/O
2302      vs. globally visible disks needed for ctrl stuff
2303      (merged from ecco-branch)
2304      - new active_file_loc... and mdsio_..._loc routines
2305      - affected packages: autodiff, ctrl, grdchk, mdsio
2306    
2307    checkpoint51c_post
2308    o introducing integer flag debugLevel
2309      - debLevZero: suppress all output
2310      - debLevA: standard
2311      - debLevB: equivalent to current debugMode=.TRUE.
2312    o introducing pathname variable mdsioLocalDir for mdsio
2313      that can be specified at runtime
2314      (relevant for cluster I/O to local disk)
2315    `
2316    >>>checkpoint51b_post
2317    adjoint of ptracers
2318    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2319    o extended state in checkpoint_lev?, etc.
2320    o alternative ctrl/cost with tr1 or ptracer
2321    o new comlev1_bibj_ptracers
2322    o new ptracers.flow
2323    o made ptracers_forcing same as external_forcing_s
2324    o added verification for adjoint with ptracers
2325      - adm. grdchk fail so far
2326      - tlm. grdchk OK
2327      - checked tapelev/comlev recomputations: OK
2328    <<<checkpoint51b_pre
2329    
2330    checkpoint51a_post
2331    o added code for biogeochemistry package
2332      - new pkgs: dic, gchem
2333      - new subroutine in ptracers
2334    o modify code for biogeo packages
2335      - in model/src and pkg/ptracers
2336    
2337    checkpoint51
2338    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2339      - autodiff, ctrl, exf, grdchk, seaice
2340      kept separate packages
2341      - cost, ecco, obcs
2342    o updating verification/internal_wave, verification/lab_sea
2343      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2344    
2345    checkpoint50i_post
2346    o Preparing next differentiable checkpoint and sync
2347      of MAIN vs. ecco-branch
2348      - 1st step: this one is differentiable
2349      - 2nd step: next(! not this) checkpoint will have updated packages
2350                  from ecco-branch)
2351    
2352    checkpoint50h_post
2353    o new package "land": provide surface BC for AIM.
2354    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2355    o AIM: use true log-P extrapolation for near surface temp (= as in
2356        F.Molteni paper) ; update aim.5l_cs output.
2357    o New variable in PARM03 for more flexible pickups
2358    o somewhat cleaned package initialisation sequence for
2359      ctrl/ cost/ ecco/ in packages_... routines
2360    
2361    checkpoint50g_post
2362    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2363      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2364      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2365        made the default because of faster convergence than ADI
2366    
2367    checkpoint50f_post
2368    o exf totally restructured
2369      - replaced all exf_set_ routines by one generic exf_set_gen.F
2370        and made sure it's still differentiable
2371      - split exf_getffields.F into new exf_bulkformulae.F
2372      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2373      - updated adjoint/makefile and relevant verif. accordingly
2374    
2375    checkpoint50f_pre
2376     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2377          + change Evap over land. (update aim.5l_cs output)
2378     o added missing .cvsignores and made uniform across expts
2379     o changed configuration of tidal_basin_2d expt
2380     o added pkg/debug functions for tracing code in fatal crashes
2381     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2382     o new fn in pkg/monitor to stop model if solution grows too big
2383     o removed lots of single quotes from comments
2384    
2385    checkpoint50e_post
2386    o make KPP work with PTRACERS
2387     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2388       nearly a copy of kpp_transport_s
2389     - there is no analogue to SurfaceTendencyS, so I have to use
2390       gPtr(of the surface layer) instead
2391    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2392    checkpoint50e_pre
2393    
2394    checkpoint50d_post
2395    o change kpp output from multiple-record state files to single-record state
2396      files analogous to write_state.F
2397    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2398      analogous to the cg2d-related output.
2399    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2400      so that writing to internal file fn (with length 512) fails.
2401    checkpoint50d_pre
2402    
2403    checkpoint50c_post
2404    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2405    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2406    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2407    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2408    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2409    
2410    checkpoint50c_pre
2411    Merging from release1_p13:
2412    o bug fix for pkg/seaice dynamic solver
2413    o Added SEAICE_initialHEFF to pkg/seaice
2414    
2415    checkpoint50b_post
2416    o store u*,v* in gU,V instead of in guNm1,gvNm1
2417    o in order to put the momForcing out of the Adams-Bashforth:
2418      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2419      to timestep.F
2420    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2421    o re-generate output for highly sensitive test-exp:
2422       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2423    
2424    checkpoint50b_pre
2425    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2426    o corrected CPP option mismatch in exf_Bulk... functions for case
2427      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2428    
2429    checkpoint50a_post
2430    o Bug fix for merging between c50 and KPP.
2431      ikey was passed from thermodynamics to kpp_calc via
2432      common block rather than being recomputed in kpp_calc,
2433      in contradiction with new key itdkey.
2434      New key ikppkey created, and tamc.h headers updated.
2435    
2436    checkpoint50
2437    - 2nd step of merge with ecco-branch:
2438      merge changes in ecco-branch back into main trunk
2439    - bug fix in find_alpha
2440    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2441    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2442    - merged some sliced AD support routines
2443    
2444    checkpoint49
2445    merged from ecco-branch:
2446    o exf:
2447      - Enable initialisation of forcing fields to constant
2448        (runtime) values.
2449      - in exf_getffields.F
2450        Reduce i-/j-loop to interior domain, discarding overlaps.
2451        That also fixes wrong TAF-key computations for key_1, key_2
2452        with bulf formulae.
2453      - exf_init.F modify #ifdef for exf_init_evap
2454      - exf_getffieldrec.F, ctrl_getrec.F
2455        The following INT-usages are not safe:
2456          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2457          fldcount = int(fldsecs/fldperiod) + 1
2458        and were modified.
2459    o autodiff: checkpoint_lev...
2460      - updated storing for bulk formulae (some arrays were missing)
2461      - added state for seaice package
2462      - synchronized with main branch
2463    o DIVA:
2464      Modif.s in
2465      - the_main_loop.F
2466      - the_model_main.F
2467      and added cost_final_restore.F cost_final_store.F
2468      o With these changes, it is possible to fully separate
2469        the first forward run to compute the cost function (mdthe_main_loop)
2470        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2471        into separate model executions.
2472        This enables better tuning of DIVA to given queue sizes.
2473      o Loss of cost function value in consecutive DIVA runs is
2474        fixed by storing to 'costfinal' file.
2475      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2476        beginning/end of adjoint integration is accounted for.
2477      The current changes apply to TAF-1.4.26.
2478      TAF has one remaining bug, requiring one manual change
2479      (see MITgcm manual).
2480    o cal: synchronized between MAIN and ecco-branch
2481    
2482    checkpoint48i_post
2483    o Changes to restore differentiability of code w.r.t. previous tag
2484      (mostly adding new routines to make list and replacing
2485      pressure by totPhiHyd).
2486    o Updated and merged grdchk package
2487      - has both ADM and TLM checks
2488      - works for single- and multi-proc.
2489      - output cleaned
2490      - worked successfully for parallel DIVA
2491    o genmake:
2492      - Adding -platform=SP4
2493      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2494    o Modif. for DIVA:
2495      ctrl_unpack should not be called in intermediate DIVA interval.
2496      (similar thing would apply for active files such as
2497      tbar, sbar, psbar, which should not be reinitialised;
2498      only relevant for ecco-branch)
2499    
2500    checkpoint48h_post
2501    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2502    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2503    o Added SEAICE_initialHEFF to pkg/seaice
2504    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2505    
2506    checkpoint48g_post
2507    --- EOS:
2508    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2509      store total Potential in totPhyHyd for diagnostics & EOS.
2510    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2511    --- Pressure/geopotential gradient:
2512    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2513    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2514      ( changes results of global_ocean_pressure )
2515    o NLFS + z-coord.: add eta*Rho' contribution.
2516    o accurate phiHyd when using interface-W at the middle between 2 centers
2517     ( changes results of ideal_2D_oce )
2518    o includes r* 2nd term in potential gradient.
2519    
2520    checkpoint48f_post
2521    Merging from release1_p12:
2522    o Modifications for using pkg/exf with pkg/seaice
2523      - improved description of the various forcing configurations
2524      - added basic radiation bulk formulae to pkg/exf
2525      - units/sign fix for evap computation in exf_getffields.F
2526      - updated verification/global_with_exf/results/output.txt
2527    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2528      (SBO) core products, including oceanic mass, center-of-mass,
2529      angular, and bottom pressure (see pkg/sbo/README.sbo).
2530    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2531      to avoid negative values in shallow regions.
2532      - updated verification/natl_box/results/output.txt
2533      - updated verification/lab_sea/results/output.txt
2534    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2535    o Added useSingleCpuIO option (see PARAMS.h).
2536    o Updated useSingleCpuIO option in mdsio_writefield.F to
2537      work with multi-field files, e.g., for single-file pickup.
2538    o pkg/seaice:
2539      - bug fix in growth.F: QNET for no shortwave case
2540      - added HeffFile for specifying initial sea-ice thickness
2541      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2542    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2543      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2544    o pkg/seaice:
2545      - adjoint-friendly modifications
2546      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2547    
2548    checkpoint48e_post
2549    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2550    o dynamics: change definition of computational domain & adapt mom_fluxform
2551      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2552    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2553        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2554        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2555        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2556        inverted_barometer solid-body.cs-32x32x1
2557      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2558    
2559    checkpoint48d_post
2560    o in preparation for r*:
2561     a) use pre-computed gradient of hydrostatic potential:
2562        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2563     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2564        => affects results of glob_oce_pressure (different truncation error)  
2565      update output.txt of ideal_2D_oce & global_ocean_pressure
2566    
2567    checkpoint48d_pre
2568    o in preparation for r*:
2569      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2570      pass the 2 comp. of the grad. as arguments to momentum S/R.
2571      but for the moment, only used if it does not change the results.
2572    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2573    
2574    checkpoint48c_post
2575    Modifications in treatment of initial flux forcing controls
2576    to avoid extra storing of flux fields.
2577    
2578    checkpoint48c_pre
2579    o Added tidal_basin_2d experiment (currently 1D!)
2580    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2581    
2582    checkpoint48b_post
2583    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2584     (modification to pressure gradient not yet implemented)
2585    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2586      (for U & V) that are used for vertical advection of momentum.
2587    
2588    checkpoint48a_post
2589    o In preparation for r*, use temp. array to compute vertical transport
2590       in flux-form momentum pkg. => change results of few test-exp.
2591      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2592                        lab_sea, natl_box & plume_on_slope
2593    
2594    checkpoint48
2595    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2596    
2597    checkpoint47j_post
2598    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2599    o moved adexch from forward_step to addummy_in_stepping
2600    o added exch in ctrl_map_...
2601    o aveFreq.=0. at end of cost_final to avoid overwrite in
2602      reverse checkpointing loop
2603    o Yet more changes in gmredi:
2604      * adgmredi_calc_tensor
2605        avoiding all recomputation of gmredi_slope_limit
2606      * adgmredi_x/y/rtransport
2607        added flag for excessive storing to avoid recomp. of
2608        u/v/rtans, dTdx/y/z
2609        -> this is not really necessary and very memory-consuming
2610      * adgmredi_slope_psi:
2611        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2612      * gmredi_slope_limit
2613        re-activated full calculation of taperfct for case 'ac02'
2614    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2615    
2616    checkpoint47i_post
2617    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2618    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2619      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2620    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2621    o gmredi: fix few bugs.
2622    
2623    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2624    This will be a good checkpoint to plug into the ecco-branch.
2625    o few modif.'s to get latest version adjointed
2626      (mainly kick out code in ini_linear_phisurf)
2627    o modif's to run adjoint with exactConserv
2628    o case GM_BOLUS_ADVEC should be cleaned
2629      S/R gmredi_slope_psi should be cleaned
2630    o verification/carbon now has exactConserv=.TRUE.
2631    
2632    checkpoint47g_post
2633    o time-average AIM output: becomes independent from statvars time-average
2634      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2635    o After TAF bug fix:
2636      Tested adjoint of gmredi package.
2637      Tests were done with checkpoint47 rather than with latest
2638      checkpoint47f_post since the latter is broken for the adjoint
2639      verification/carbon/ contains both ADM and TLM gradient checks.
2640    Here they are, before they get changed/lost/stolen.
2641    Mostly modif.'s to fix numerical sensitivities.
2642    Gradient checks OK for
2643    - GM_taper_scheme:
2644      * clipping
2645      * ac02
2646      * linear
2647      * glw91
2648      * dm95
2649      * ldd97
2650    - GMREDI_OPTIONS:
2651      * GM_VISBECK_VARIABLE_K
2652      * GM_NON_UNITY_DIAGONAL
2653      * GM_EXTRA_DIAGONAL
2654      * GM_BOLUS_ADVEC
2655    in conjunction with data.gmredi parameters to be checked in
2656    in a few minutes under verification/carbon/code/
2657    
2658    checkpoint47f_post
2659    Merging from release1_p10:
2660    o modifications for using pkg/exf with pkg/seaice
2661      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2662        and SEAICE_EXTERNAL_FLUXES
2663      - pkg/exf CPP options EXF_READ_EVAP and
2664        EXF_NO_BULK_COMPUTATIONS
2665      - usage examples are Experiments 8 and 9 in
2666        verification/lab_sea/README
2667      - verification/lab_sea default experiment now uses
2668        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2669    
2670    checkpoint47e_post
2671    o created a tag prior to creating a branch
2672    
2673    checkpoint47d_post
2674    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2675      at the bottom boundary had an erroneous half slip boundary condition
2676    o added bottom drag and no slip boundary condition capabilities to
2677      oceanic pressure coordinates code
2678    o added new verification experiment global_ocean_pressure, this experiment is
2679      also described in the tutorial section of the manual
2680    checkpoint47d_pre
2681    
2682    checkpoint47c_post
2683    o Added a verification experiment for a global cubed-sphere ocean run
2684      -  verification/global_ocean.cubed32x32x30
2685      -  uses pkg/therm_seaice and pkg/bulk_forcing
2686    
2687    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2688    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2689      when using P-coordinate; only implemented for atmospheric config.
2690    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2691      NOTES: requires option NONLIN_FRSURF to be "#define".
2692    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2693    
2694    checkpoint47b_post
2695    Merging from release1_p9:
2696    o pkg/seaice
2697      - removed GOTO's and added taf directives
2698      - double precision constants to reduce the g77 (Linux)
2699        to F77 (SGI) differences reported in release1_p8
2700    o tools/genmake
2701      - added SGI options
2702    o verification/testscript
2703      - updated to that of checkpoint47a_post
2704    o verification/global_ocean.90x40x15/input/eedata
2705      - modified for SGI f77 compatibility
2706    o verification/lab_sea
2707      - added description of sea-ice model
2708      - added missing matlab routines
2709      - added test of thermodynamics parallelization
2710    
2711    checkpoint47a_post
2712    o new pkg: aim_v23
2713     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2714       for now, keep the same surface forcing as before.
2715     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2716     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2717     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2718    o add diagnostic of surface correction term in monitor output
2719    
2720    o bulk_force and therm_seaice
2721    - Two packages:  bulk_force (Bulk forcing)
2722      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2723    - Earlier integration from Stephaine Dutkiewicz
2724      and Patrick Heimbach.
2725    - Two ifdef statements for compile time,
2726       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2727    
2728    checkpoint47
2729    differentiable version of checkpoint46n_post
2730    o bug fix in quasihydrostaticterms
2731    o * "clean" adjoint code (in terms of extensive recomputations)
2732        can now be obtained for all GMREDI options (i.e. for
2733        - GM_VISBECK_VARIABLE_K
2734        - GM_NON_UNITY_DIAGONAL
2735        - GM_EXTRA_DIAGONAL
2736        - GM_BOLUS_ADVEC )
2737      * However, wrong gradient check problem remains unsolved.
2738      * New CPP options have been introduced for different
2739        tapering schemes
2740    o external_fields_load now part of differentiation list
2741    o pressure needs multiple storing;
2742      would be nice to have store_pressure at beginning or
2743      end of forward_step, e.g. by having phiHyd global (5-dim.)
2744      (NB: pressure is needed for certain cases in find_rho,
2745      which is also invoked through convective_adjustment).
2746    o recomputations in find_rho for cases
2747     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2748    o #define ATMOSPHERIC_LOADING should be differentiable
2749    o ini_forcing shifted to begining of initialise_varia
2750    o Incorporating QNVS line search routines into MITgcm
2751      (this is separate code, and therefore not under pkg)
2752      lsopt/, optim/
2753    o Updated verification/carbon/
2754      - #define GM_VISBECK_VARIABLE_K
2755      - GM_taper_scheme    = 'ldd97'    
2756    
2757    checkpoint46n_post
2758    Merging from release1_p8:
2759    o verification/natl_box:
2760      updating new external_fields_load routine
2761    o New package: pkg/seaice
2762      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2763      The sea-ice code is based on Hibler (1979-1980).
2764      Two sea-ice dynamic solvers, ADI and LSR, are included.
2765      In addition to computing prognostic sea-ice variables and diagnosing
2766      the forcing/external data fields that drive the ocean model,
2767      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2768      The implied surface heat flux is then stored in variable
2769      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2770      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2771      non-local transport term.  Because this call precedes model
2772      thermodynamics, temperature under sea-ice may not be "exactly" at
2773      the freezing point by the time theta is dumped or time-averaged.
2774      N.B.: fairly large differences in accuracy occur across
2775            different platforms/compilers; comparison between
2776            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2777            generated output gives:
2778       T           S           U           V
2779      C D M    c        m  s        m  s        m  s        m  s
2780      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2781      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2782      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2783    
2784      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2785    o GAD:
2786      - generated new common blocks to account for call of
2787        same gad routines with differing traceridentities
2788        (needed to modify tracerIdentity indices in GAD.h)
2789      - generated separate common blocks for case useCubedSphereExchange
2790        (Department of Futurology)
2791      - parameter lists to gmredi_?transport: added tracerIdentity
2792      - added new key indices to tamc.h
2793    o external_fields_load:
2794      - added this routine to TAF list
2795      - needed to make some common blocks global and additional storing
2796        along the same lines as exf package (checkpoint_lev?_directives.h)
2797    o exf:
2798      updated external forcing package
2799      - bug fixes carried over from ecco-branch
2800        (missing OBCS_OPTIONS.h in two routines)
2801      - enable easy to use "no forcing".
2802      - added exf I/O for atmospheric loading
2803      - added exf I/O for runoff data
2804      - transfered scaling between exf <-> MITgcm to exf namelist
2805    o Adding new verification experiment global_with_exf.
2806      This verification experiment is almost identical to the
2807      global_ocean.90x40x15 experiment, except that it uses
2808      the exf (and cal) package instead of the
2809      external_fields_load routine (cf README file).
2810    
2811    checkpoint46m_post
2812    o modified testscript to return -- when there are no lines of "%MON" output
2813    o added new flag "quasiHydrostatic" for QH mode
2814      and new routine quasihydrostaticterms()
2815    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2816      New routine: mom_u_coriolis_nh()
2817    o fixed sign of non-hydrostatic metric terms in u and v equations.
2818      Depend on correct sign of gravitySign.
2819    o added work.pc* to .cvsignore in aim directories using ifc
2820    o introduced flag for controllin non-hydrostatic metric terms
2821    o removed gravitySign from PARM04
2822    o switched to g77/ifc from pgf77 in aim experiments
2823    
2824    checkpoint46l_post
2825    o made convective adjustment work with pressure coordinates:
2826     - changed the direction of k-loop in convective_adjustment.F for the
2827       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
2828     - adjusted the reference pressure k-index in convective_adjustment.F
2829     - adjusted the convection condition in convect.F (in analogy to
2830       calc_ivdc.F)
2831     - convective_adjustment no longer computes anything on the halos
2832     - removed the warnings about negative salinity from find_rho.F and
2833       find_alpha.F; instead the new routine look_for_neg_salinity, called
2834       at the beginning of find_rho, find_alpha, and find_beta, does a
2835       check of the entire slice, if CPP-option
2836       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
2837    checkpoint46l_pre
2838    
2839    checkpoint46k_post
2840    o fixed the verification/global_ocean.90x40x15 experiment:
2841     - new bathymetry (the world according to A., JMC, and M.)
2842     - new initial fields and forcing fields (*.bin files)
2843     - new POLY3.COEFFS (for the next release one should switch to a full
2844       equation of state: JMD95P or MDJWF)
2845     - fixed several errors and redundancies in the data file
2846     - experiment uses looped cells
2847     - added matlab directory with diagnostic scripts for plotting of output
2848    
2849    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
2850     - read AIM physics parameters from a file (data.aimphys)
2851     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
2852    
2853    checkpoint46j_post
2854    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
2855    o move wVel computation at the end of the time step, in S/R integr_continuity
2856    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
2857    o update timeave pkg for wVel diagnostic.
2858    checkpoint46j_pre
2859    
2860    checkpoint46i_post
2861    o Clean up AIM package (and keep the results unchanged):
2862      include CPP_OPTION and use IMPLICT NONE in all routines ;
2863      declare all the variables _RL ; use _d 0 for all numerical constants.
2864      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
2865    
2866    checkpoint46h_post
2867    o cleaned up the use of rhoNil and rhoConst.
2868      - rhoNil should only appear in the LINEAR equation of state, everywhere
2869        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
2870        and the dynamical equations are all divided by rhoConst
2871    o introduced new parameter rhoConstFresh, a reference density of fresh
2872      water, to remove the fresh water flux's dependence on rhoNil. The default
2873      value is 999.8 kg/m^3
2874    o cleanup up external_forcing.F and external_forcing_surf.F
2875      - can now be used by both OCEANIC and OCEANICP
2876    checkpoint46h_pre
2877    
2878     Added code to convert surface volume flux (fresh water) into
2879     a mass flux when using P coordinates in the ocean (OCEANICP).
2880     Note: It assumes you have set rho0=rhoConst=density of fresh water.
2881    
2882    checkpoint46g_post
2883    o Include a new diagnostic variable phiHydLow for the ocean model
2884      - in z-coordinates, it is the bottom pressure anomaly
2885      - in p-coordinates, it is the sea surface elevation
2886      - in both cases, these variable have global drift, reflecting the mass
2887        drift in z-coordinates and the volume drift in p-coordinates
2888      - included time averaging for phiHydLow, be aware of the drift!
2889    o depth-dependent computation of Bo_surf for pressure coordinates
2890      in the ocean (buoyancyRelation='OCEANICP')
2891      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
2892        Theta, Salinity, and Pressure in the parameter list. This routine is
2893        presently contained in find_rho.F. This routine does not give the
2894        correct density for 'POLY3', which would be a z-dependent reference
2895        density.
2896    o cleaned up find_rho
2897      - removed obsolete 'eqn' from the parameter list.
2898    o added two new verification experiments: gop and goz
2899      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
2900    checkpoint46g_pre
2901    
2902    checkpoint46f_post
2903    o Enable tangent linear (forward mode) gradient checks:
2904      - extended active file handling to g_... files
2905      - added TANGENT_SIMULATION to theSimulationMode
2906      - extended grdchk package accordingly
2907    o added tangent linear setup in verification/carbon/code_ftl
2908    o added adjoint setup in verification/front_relax/code_ad
2909    
2910    checkpoint46e_post
2911    o Added new equation of state -> MDJWF
2912      - EOS of McDougall et al., 2002, JAOT, submitted
2913      - caveat: the equation of state is only valid for a smaller (more
2914        realistic?) range of values than JMD95P/Z and UNESCO
2915      - added masks to the calculation of pressure in store_pressure
2916      - added more check values for density in check_eos (ini_eos.F), some of
2917        the old check values are out of the range of the MDJWF-eos, so don't
2918        expect perfect matches for those
2919    checkpoint46e_pre
2920    
2921    checkpoint46d_post
2922    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
2923      'OCEANICP', also initialised field pressure correctly in ini_eos in the
2924      case of pressure coordinates. eosType='JMD95Z' in
2925      combination with buoyancyRelation='OCEANICP' now causes an error.
2926    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2927      in find_alpha/beta.
2928    checkpoint46d_pre
2929    
2930    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2931      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
2932    
2933    checkpoint46c_post
2934    o Changes necessary for ocean in p-coordinates
2935     -  Added new buoyancy relation = 'OCEANICP'
2936     -  Added new parameters = gravitySign (this used to be contained inside
2937        the factor dRdZ which I added when we first switched to R coordinates).
2938     X GM/Redi is not compatible (yet)
2939     X bottom drag and no-slip need to be debugged.
2940    checkpoint46c_pre
2941    
2942    checkpoint46b_post
2943    o Added new equation of state -> JMD95Z and JMD95P
2944      - EOS of Jackett and McDougall, 1995, JAOT
2945      - moved all EOS parameters into EOS.h
2946      - new routines ini_eos.F, store_pressure.F
2947    o Added UNESCO EOS, but not recommended because it requires
2948      in-situ temperature (see JMD95)
2949    o Modified formatting for knudsen2.f in utils/knudsen2 and added
2950      unesco.f to be used with POLY3
2951    checkpoint46b_pre
2952    
2953    checkpoint46a_post
2954    o Added (atmospheric) pressure loading
2955      - new field in FFIELDS.h, etc...
2956      - new cpp flag ATMOSPHERIC_LOADING
2957    o Changed hFacC to _hFacC in calc_phi_hyd.F
2958    o Added SHORTWAVE_HEATING to some files for consistency
2959    checkpoint46a_pre
2960    
2961    checkpoint46
2962    further merges from release1_p5
2963    o new ctrl package
2964      - adopted from ECCO environment to enable optimization
2965      - added Eliassen Palm fluxes to controls
2966    o added Eliassen Palm flux controls to gradient check package
2967    o cost package
2968      - Compatible with new ctrl package
2969      - added Eliassen Palm cost hooks
2970      - modif's of existing cost functions
2971    o Adjoint-related bug fixes in kpp:
2972      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
2973      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
2974    o autodiff package
2975      - flow directives:
2976        + new for S/R do_the_model_io
2977        + enhanced for S/R checkpoint
2978        + new gmredi.flow
2979      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
2980        disable adcommon.h/g_common.h by default.
2981      - fixed problem for adjoint of global_max
2982    o modified verification/carbon/
2983    o New setup for adjoint of global_ocean
2984    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
2985    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
2986    o incorporated hooks for sponge layer code (external_forcing.F)
2987    
2988    checkpoint45d_post
2989    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
2990    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
2991      (affects plume_on_slope "cg2d" output)
2992    o add new parameter deltaTfreesurf for free-surface time stepping
2993    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
2994    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
2995    o change phiMin in exp1 (to agree with documentation)
2996    o add new flags:
2997     - T,S forcing inside/outside Adams-Bashforth
2998     - turn off temp,salt advection and/or forcing
2999     - for each tracer, define internal flag for multiDimAdvection & A-B
3000    o monitor: change definition of KE to check conservation of Energy
3001    
3002    checkpoint45c_post
3003    o Removed f90 comments ("!")
3004    o Modified initialisations to enable exf package for MITgcm
3005      (without invoking ECCO_PACKAGE).
3006    o modifications to gradient check package (Martin Losch)
3007      - enable centered differences
3008      - modified format of standard output
3009    
3010    checkpoint45b_post
3011    o cleaned exchange calls in cg2d
3012    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
3013    o included CPP option SINGLE_LAYER_MODE in thermodynamics
3014      to configure barotropic setup (Martin Losch)
3015    o moved some initialisations within bi,bj loop in dynamics
3016      (TAF flow dependency)
3017    o in initialise_varia, moved call packages_init_variables
3018      before convective_adjustment_init
3019      (corresponding adjustment of TAF tape initialisation).
3020    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
3021    
3022    checkpoint45a_post
3023    o compute Rho over the whole domain (extend iMin,jMin indices)
3024    o specific exchange for X-slice domain (case Ny=1)
3025    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
3026    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
3027    
3028    checkpoint44h_post = checkpoint45
3029    o Fix to restore differentiability:
3030      place at which packages_init_variables is called in
3031      initialise_varia is crucial for reverse control flow.
3032    o modifications in GMRedi to enable stable adjoint
3033      (corresponding modif's in thermodynamics, dynamics)
3034    o added missing hook for sponge layer code in external_forcing
3035    o modified test cost functions
3036    o storing in gad_advection (plus removal of write(0,*)!
3037    o missing headers TR1.h added in convective_adjustment routines
3038    o errorMessageUnit set non-equal zero in eeboot
3039      (conflict on some platforms, e.g. IBM SP3)
3040    o modified carbon verif.
3041    
3042    checkpoint44h_pre
3043    o vertical grid option: allow to put the Interface at the middle between
3044      2 cell-centers ; replace delZ in pkg/kpp by drF.
3045    o GM Advective form: Tracers are advected using the residual transport (=
3046      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
3047    
3048    checkpoint44g_post
3049    o fix surface correction term in multiDimAdvection (affects plume_on_slope
3050      results) ; ifdef missing in thermodynamics.F
3051    
3052    checkpoint44f_pre,checkpoint44f_post
3053    o added PTRACERS package
3054      This allows an arbitrary number of passive tracers to be integrated
3055      forward simultaneously with the dynamicaly model.
3056      + Implemented so far:
3057        - basic forward algorithm (time-stepping, advection, diffusion, convection)
3058        - I/O and checkpointing
3059        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
3060      + Not implemented so far:
3061        - KPP
3062        - OBCS
3063      + No specific example supplied (yet) but global_ocean.90x40x15 has the
3064        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
3065        line in data.pkg.
3066      + This package is disabled by default since it increases storage.
3067    
3068    
3069    o testscript: added -cleanup option
3070    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
3071                 b) enable to filter 2D fields.
3072    
3073    checkpoint44e_pre,post
3074    o re-wrote convective adjustment to use pre-calculated weights
3075      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
3076      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
3077      Original calls to convect() still in place.
3078    
3079    chkpt44d_pre,post
3080    o added missing EXCLUDE_MONITOR flags
3081    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
3082      (incompatible typ in MIN/MAX expressions caused problems
3083      on IBM SP3)
3084    o in genmake added variable MAKEDEPEND
3085      plus resetting for case SunOS
3086    o added timer_stats.c routine for IBM SP3
3087    o removed variables in dynamics
3088    !!! I forgot to create tag chkpt44d_pre !!!
3089    !!! But chkpt44d_pre = chkpt44c_post    !!!
3090    
3091    o real fresh water flux implemented with non-linear free-surface.
3092    
3093    chkpt44c_pre,post
3094    o few fix (mask in shap_s2, EmPmR in external_field_load,
3095      USE_NATURAL_BCS in solve_for_P);
3096    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
3097    
3098    checkpoint44b_pre/_post
3099    o merge of relevant stuff from the ecco-branch:
3100      - genmake: removed $S64 overwrite for case SunOS
3101      - pkg/exf: update and corrections for field swapping and obcs
3102      - pkg/ecco: parameter lists for the_model_main, the_main_loop
3103                  harmonized between ECCO and MITgcm
3104      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
3105                      updated checkpointing_lev... lists for obcs
3106      - model/src: minor changes in forward_step, plot_field
3107                   added directive for divided adjoint in the_main_loop
3108      - pkg/mdsio: added mdsio_gl_slice
3109    
3110    o check parameters & config (chkpt44a_pre,post)
3111    o OBC and NonLin_FrSurf.
3112    
3113    checkpoint44
3114    o fix bug in mom_vi_del2uv
3115    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
3116    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
3117    o update AIM experiments (NCEP input files)
3118    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
3119    o added some stuff for AD
3120    
3121    checkpoint43
3122    o added two new advection tests
3123    o added global 4x4 degree ocean test
3124    o added test of H&S94 with free surface on cube
3125    o some final mods for gradient check, adjoint,...
3126    
3127    checkpoint42
3128      Fixed AD-related problems:
3129    o Store directives up-to-date with re-arranged Adams-Bashforth
3130      (mainly thermodynamics.F)
3131    o New store directives for multi-dim. advection schemes
3132      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
3133      * new common block and key passkey
3134      (mainly gad_advection.F)
3135    o Modified store directives for split of dynamics/thermodynamics
3136      for the case ALLOW_KPP
3137    o Cleaned argument list for timestep_tracer.F
3138    
3139    checkpoint41
3140    o re-formatted/added comments in prologues of key subroutines
3141      to work with protex
3142    
3143    checkpoint40
3144    o moved calc_gs, calc_gt and calc_tr1 back to model/src
3145    o added FLT (floats) package from Arne along with demo. experiment
3146    o re-arranged Adams-Bashforth scheme for tracers to allow easier
3147      implementation of forward-in-time forcing terms
3148    o more mods for non-linear free-surface including new variable
3149    o modified multi-dim method to work on cube
3150    o bug fix in KPP (from DM)
3151    
3152    checkpoint40pre9
3153    o added DST advection schemes
3154    o fix MPI bug on SGI's
3155    o modifications for non-linear free-surface
3156    o fixed conditionals for fixed flow/passive tracer only mode
3157    o added tension/strain form of stress tensor
3158    o changes to commenting of arguments for TAF/TAMC
3159    o added/updated many matlab scripts
3160    o added multi-dimensional advection method for tracers
3161      
3162    checkpoint40pre8
3163    o new package rw/
3164      Added method for dumping intermediate local arrays:
3165      mdsio_writetile - same as mdsio_writefield except works from inside
3166                        bi,bj loop
3167      mdsio_writelocal - same as mdsio_writetile except works for local
3168                         arrays
3169      write_local_r? - higher-level wrapper for mdsio_writelocal
3170      Controlled by diagFreq. Defaults to zero (ie. no dumps)
3171      Example given at end of mom_vecinv.F that dumps some local arrays.
3172    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
3173      control flux-form versus vector invariant code.
3174      Switch is runtime flag vectorInvariantMomentum (defaults to false)
3175      or genmake -DISABLE ...
3176    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
3177      (additional storing is now needed for case vecinv;
3178      currently nothing implemented to switch this storing off
3179      in case fluxform is used since no CPP flag available).
3180    
3181    checkpoint40pre7
3182    o bug fix in dynamics.F
3183      calc_viscosity called before k=1,Nr loop.
3184    o added some #ifdef's ALLOW_PASSIVE_TRACER
3185    o cleaned initialisations in ctrl_map_ini
3186      related to TAF
3187    
3188    checkpoint40pre6
3189    o split dynamics into thermodynamics & dynamics
3190    o corresponding split of calc_diffusivity into
3191      calc_diffusivity, calc_viscosity
3192      (kpp_calc_diff, kpp_calc_visc).
3193    o Added diffkr, kapgm to control variables
3194    o bug fix in gmredi_slope_limit for ldd97
3195    
3196    checkpoint40pre5
3197    o proper initialization of Adams-Bashforth time stepping
3198      + uses forward step for very first step of model (iter=0)
3199    o re-generated *all* output since almost all output is modified by this
3200      change (sorry but we've been putting this one off for about 2 years)
3201      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
3202        *not* regenerated since they are already out of date and I don't
3203        want to create the impression that they are suddenly working.
3204    o removed KAP stuff for DEC's
3205    o modified/added many .cvsignore files in */code and */input
3206    o added new expt "solid-body.cs-32x32x1"
3207      + this uses an alternative form of ini_curvilinear_grid.F which
3208        is not necessarily any better than the current one...
3209    
3210    checkpoint40pre4
3211    o added re-initialisations of utrans,vtrans,rtrans in
3212      calc_common_factors which are crucial for TAF.
3213    o extended iMin,jMin range for calc_common_factors,
3214      calc_diffusivity
3215    o added option ALLOW_PASSIVE_TRACER
3216    o a few minor updates and fixes
3217    
3218    checkpoint40pre3
3219    o created calc_gtr1.F for gad package
3220    o split the_main_loop and re-introduced forward_step
3221    o some recomputations of nIter0 for TAMC
3222    
3223    checkpoint40pre2
3224    o Updated to latest branch of AJA, JMC
3225    o Added gradient check package
3226    o Added routines for passive tracer handling
3227    o Added carbon sequestration sensitivity experiment
3228    
3229    checkpoint39
3230     o Modifications and fixes to support TAMC
3231       (mainly missing or wrong directives)
3232     o Corrected common blocks when fooling TAMC to produce adjoint I/O
3233       in addummy_in_stepping
3234     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
3235     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
3236     o Included following packages:
3237       cal: calendar
3238       exf: external forcing
3239       ecco: essential routines to control use of cal, exf
3240             (NB: this is not the full ECCO environment)
3241     o disabled some packages by default in genmake
3242    
3243    checkpoint38
3244     o see notes_c37_adj.txt
3245     o corrected wrong layer index in external_forcing_t
3246     o replaced the_main_loop/forward_step by the_main_loop
3247     o removed forceoutput from write_state
3248       (replaced criteria for initial/final state)
3249     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
3250    
3251    checkpoint37
3252     o mdsio.F routine split and packaged in pkg/mdsio
3253       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
3254        used unless genmake -disable=mdsio)
3255     o allow a more precise surface-geopotential gradient for the atmosphere
3256       taking into account the change in space of Alpha (=1/rho) at the surface.
3257     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
3258       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
3259     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
3260       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
3261       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
3262     o Time-Average diagnostics defined as a pseudo package "timeave".
3263     o pickup files : old pickup (before c35) did not work with new code (c35
3264       and after) unless activating 2 commented lines in initialise-varia.
3265     o Non-Hydrostatic pickup file Pb fixed.
3266     o bug with Rigid-lid version (since c35) fixed.  
3267    
3268    checkpoint36
3269     o implement Crank-Nickelson barotropic time-stepping
3270     o recover Time-Average diagnostics
3271     o fix Pb in checkpoint (PR#19)
3272     o AIM become a standard package ; clean unused CPP_kees
3273    
3274    checkpoint35
3275     o subtantial rewrite of dynamics.f
3276     o allows staggered time-stepping
3277     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
3278     o added bottom drag (linear + quadratic)
3279    
3280    checkpoint34
3281     o Modified exchange routines for correct reverse simulation.
3282     o Added verification output to comply with bug fix in impldiff.F
3283       as of c33 (exp2, natl_box).
3284     o Corrected store directives in dynamics.F
3285     o Corrected array boundaries in impldiff.F
3286     o Corrected array dimensions in gmredi.
3287       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
3288     o Added routine GLOBAL_SUM_INT to global_sum.F
3289     o Added mdsio_gl.F for ECCO purposes.
3290    
3291  checkpoint33  checkpoint33
3292   o Fixed bug in lower BC in impldiff.F   o Fixed bug in lower BC in impldiff.F
3293   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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