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revision 1.96 by adcroft, Tue Nov 5 19:15:12 2002 UTC revision 1.835 by gforget, Fri Jun 15 05:09:24 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 pkg/profiles:
8     - added option ALLOW_PROFILES_GENERICGRID
9         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
10         that interpolation information (grid points and coefficients) is provided
11         within the netcdf input files.
12         -> sample matlab scripts can be found in MITgcm_contrib/gael
13         that allow you to prepare netcdf input files.
14     - also modified: cleaner include statements, cleaner error print statements,
15       cleaner stops when error, and more tests of the netcdf input files consistency.
16    
17    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
18    o pkg/seaice:
19     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
20       requires a new routine: seaice_diagnostics_fill.F
21     - make sure that seaice does not move if not forced (pressure replacement
22       method, Hibler and Ip, 1995), changes results
23     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
24     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
25       It is turned off by default (=-1.), because it changes the results.
26     - make it possible to read AREA from a file, too.
27    
28    checkpoint59c
29    o add S/R and diagnostics for oceanic mixed-layer depth
30    o move GMRedi call after all vertical mixing schemes (including KPP)
31    o pkg/thsice:
32     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
33      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
34    o pkg/obcs:
35     - bug fix for balance code
36    o pkg/seaice:
37      - allow values of SEAICE_elasticParm > 1
38      - add new parameter SEAICE_evpTauRelax as an alternative
39        to SEAICE_elasticParm
40      - make lsr boundary conditions free slip (by default), changes result
41      - add code for no slip boundary conditions for lsr
42      - set minimum of zeta to zero (and not 4e8) (changes results)
43      - add a cap on AREA after advecting AREA if seaice_growth is not called
44    o change calculation of Visbeck K:
45      - no longer depend on tapering scheme; instead, compute slope (limited
46        by GM_maxSlope). this is equivalent to what was comuted before with
47        clipping or linear tappering.
48      - fix vertical averaging (wrong by 1/2 level)
49      - leave the old version (but will not be maintained) within
50        #ifdef OLD_VISBECK_CALC / #endif
51      - update output of exp. ideal_2D_oce
52    o change error catch in calc_r_star to improve vectorization
53    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
54      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
55    o adjoint:
56      Re-organized adjoint checkpointing according to Matt Mazloff
57      (but with modifs/completions/cleanups)
58      Storing is now bundled into large arrays to optimized I/O
59      (and second step in cleanup of the_main_loop)
60    
61    checkpoint59b
62    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
63      - export/import (between ocean & coupler) fields needed for ocean DIC.
64    o pkg/seaice:
65      - get rid of three more exchanges seaice_calc_viscosities (required
66        different loop boundaries in seaice_lsr and seaice_ocean_stress)
67      - bug fix in seaice_ocean_stress (update of lab_sea required)
68      - reduce loop boundaries to necessary minimum also in seaice_evp
69      - go back to the old way of computing deltaC/Z as the adjoint likes that
70        better
71    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
72      passive tracer to an Age Tracer) + update output.txt
73    o pkg/exf:
74      - implement A-grid / C-grid selection for wind-stress input files.
75      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
76      for now, in exf_bulk_largeyeager04.F only :
77      - change implementation for case where windspeed + 2. components wind-stress
78        are read-in. AND use rhoConstFresh to convert evap.
79    o pkg/seaice:
80      - use correct EXCH_UV for wind-forcing (on A-grid).
81      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
82        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
83    o pkg/exf:
84      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
85      EXF_INTERPOLATION:
86      - merge global_with_exf/code version of exf_interp_read.F
87        to the main code ;
88      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
89        reading the file ; Important: This options needs to be defined to recover
90        previous code.
91        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
92      - no longer loose real*8 precision along the way when using exf_iprec=64.
93    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
94      - change discretisation of evp-solver in order to avoid another exchange
95        (changes lab_sea) and clean up a little
96      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
97        help the adjoint (this also changes the results slightly)
98      - add a few "_d 0" where they had been missing in seaice_evp.F
99      - cleaning up: remove unused seaice_calc_rhs.F
100    o pkg/exf: some cleaning-up:
101      - change various "constants" into runtime parameters
102      - cleaned-up Large&Yeager04 routine which should eventually
103        replace exf_bulkformulae.F (changed names of S/R and CPP)
104        and merged various ALLOW_ATM_WIND options
105     only used with thsice pkg (in thsice_get_exf.F):
106      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
107        which are used when useStabilityFct_overIce=TRUE (= the default)
108      - change default values of ice & snow emissivity and scale downward LW
109        by ice & snow emissivity.
110    o pkg/thsice:
111     fix few little problems, in thsice_calc_thickn.F:
112      - growth vertically (and not laterally) if iceFrac == iceMaskMax
113      - melt only laterally if hIce < hThinIce (as the comments say)
114      and in thsice_extend.F:
115      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
116      - start to form ice as soon as the minimum ice-volume is reachable.
117     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
118      and cpl_aim+ocn
119    o pkg/kpp
120     - move computation of surface related input fields to KPP into a new
121       subroutine kpp_forcing_surf.F
122     - remove wrong (within bi,bj loops) EXCH calls.
123     - little cleaning (add argument myThid in last position, cvs header ...)
124     - for now, fix conservation problem by exchanging KPPviscAz (may not
125       be the best fix)
126    o pkg/seaice
127     - check for inconsistent evp parameter/cpp-flag combination
128     - remove leftover errIO flat for obsolete name list error handling
129    o OpenAD
130     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
131    
132    checkpoint59a
133    o pkg/seaice: some parameter clarifications and a little bit of clean up
134    o pkg/thsice: rename run-time parameters:
135       himin       -> hIceMin
136       himin0      -> hThinIce
137       hihig       -> hThickIce
138       i0          -> i0swFrac
139       transCoef   -> bMeltCoef
140       frac_energy -> fracMelting
141      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
142       with default values (for now) that do not change the results.
143      remove old version of thsice vars advection in pkg/seaice.
144    o in FFIELDS.h:
145      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
146      - make pLoad & sIceLoad always available (but still only used if
147         ATMOSPHERIC_LOADING is #define).
148    o pkg/kpp: replaced _KPP_RL with _RL
149    o bug fixes for vertical diffusivity computations when both KPP and
150        3D diffusivity arrays are used.
151    o pkg/seaice: fix bug in evp solver, while doing that
152      - change (improve?) discretization of stress computations for both
153        cgrid-lsr and evp solver
154      - add a new routine to compute strain rates
155      - the above changes lab_sea results
156      - add no slip conditions for evp solver (off by default), lsr-version
157        may follow
158      - fix exchange for shear at Z-points (does not change lab_sea)
159      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
160        (to force the user to pick a time step since there is not "safe" way
161        of choosing it)
162      - add principal stress diagnostics
163      - rearrange fields for evp a little to avoid having to call a: too many
164        exchanges and b: exchanges for stress trensor components which we do
165        not have.
166      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
167        of evp, complete rewrite for lsr case (latter is does not yet work
168        in all cases)
169    o pkg/kpp: add code to have mixing in shelf ice caverns
170      - add myThid to all kpp routines (long overdue)
171    
172    checkpoint59
173    o pkg/exf:
174      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
175        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
176      - move exf header files from lower_case.h to UPPER_CASE.h ;
177        add missing cvs Header & Name
178      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
179      - add namelist param. selectStressGridPosition, exf_monFreq
180      - retire many _CLIM routines, and remove data.exf_clim
181        + params moved to data.exf
182        + climsst, climsss now handled by exf_set_gen, i.e.
183          climss?period=0 refers to constant field,
184          climss?period=-12 to monthly forcing
185      - split up namelists in data.exf
186    o pkg/seaice:
187      - remove seaice_exch and seaice_exch_uv
188      - remove superfluous exchange of theta
189      - add myThid to seaice_budget_ocean/ice
190      - add new interface for atmospheric wind forcing (C-grid only)
191        + new routine
192        + two new field (taux, tauy for stress over ice)
193        + removed one global field (DAIRN) for C-grid case only
194    o pkg/thsise
195      - 2nd set of modifs for thsice adjoint in conjunction with exf
196    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
197    
198    checkpoint58y_post
199    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
200      vertical diffusivity, similar to that in MOM4; turned on using
201      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
202      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
203    o Added capability for 3D specification of background vertical diffusion
204      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
205      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
206      "data" file that contains the 3D vertical diffusivity coefficients.
207    o ice dynamics (pkg/seaice) with thsice thermodynamics:
208      - add code within pkg thsice to advect & diffuse sea-ice fields
209      similar to (and will replace) what has been added in  seaice_advdiff.F,
210      but: - conserving Mass, Heat & Salt.
211           - better when using non-linear advection scheme (not yet fully tested)
212           - can also be used in atmospheric set-up (for now, only the diffusion).
213    
214    checkpoint58x_post
215    o IO option for global-file compact format:
216      - add options when generating topology (utils/exch2/matlab-topology-generator)
217      - add I/O capability (pkg/mdsio).
218      - adapt utils/matlab/rdmds.m to read this format.
219      for now long-line format not yet supported by pkg/mdsio (& exch2).
220    o shelfice: add a few diagnostics
221    
222    checkpoint58w_post
223    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
224      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
225      (and replace horiVertRatio in NH code).
226      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
227                         and tutorial_plume_on_slope (sensitive to truncation)
228    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
229      directly to drive seaice model (C-grid only)
230    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
231     - reintroduce computation of wind from stress,
232     - compute tau (in exf_bulkformulae.F) from windstress averaged to
233       mass points to avoid tau = 0
234     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
235    o rdmnc.m: make it work with "global" files created with gluemnc
236    o rdmnc.m : some improvements in dealing with singleton dimension
237      (tested on all testreport mnc output files).
238    o genmake2: disable pkg/profiles if netcdf test fails.
239    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
240    o move call to cal_readparms up to make calendar parameters/variable available
241      to all packages
242    
243    checkpoint58v_post
244    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
245      useDynP_inEos_Zc tested.
246    o pkg/exf: changes to properly interpolate/mask/scale initial fields
247    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
248      and portions thereof.  See read_cs.txt for description and examples.
249    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
250      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
251      following the great-circle arc between those 2 points.
252    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
253      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
254    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
255     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
256     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
257     - still needs work (not working with some options ; efficiency to improve)
258       and serious testing.
259     - use this scheme for temperature & salinity in 2 advection test exp.:
260       advect_xy & advect_xz, respectively.
261    
262    checkpoint58u_post
263    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
264    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
265    o testreport: add option "-skipdir" to skip some test.
266    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
267      momentum calculation.
268    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
269    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
270      remove checkpoint.F and the_correction_step.F (no longer used);
271      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
272    o add option (linFSConserveTr) to correct for tracer source/sink due to
273      Linear Free surface
274    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
275    o pkg/thsice: fix reading mnc-pickups
276    
277    checkpoint58t_post
278    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
279    o pkg/mdsio:
280     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
281       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
282       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
283     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
284     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
285       either MDS_READ_FIELD or MDS_WRITE_FIELD )
286     - new S/R (to replace MDSWRITEMETA), which allows to write more
287       informations (variable names, time ...) to meta files.
288     - modify rdmds.m to give back the meta file content.
289    o pkg/diagnostics: change vertical interpolation to be safer, and more
290       flexible (define p-levels to interpolate to in data.diagnostics);
291      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
292       diagnostic pointer.
293    o pkg/seaice: more cleaning up of seaice_growth, added many comments
294    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
295    o fix multi-category seaice:
296     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
297       SEAICE_MULTICATEGORY
298     - fix short wave heat flux
299    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
300       and allow to use EVP solver. Change forward lab_sea: test both EVP
301       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
302    o Initial check-in of lab_sea adjoint
303      (very similar to natl_box_adjoint/code_seaice)
304      * used C-grid and EVP solver
305      * used KPP, GM/Redi
306      * uses inAdExact=.TRUE.
307      * gradient checks fail for both ADM and TLM
308        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
309        f.d. gradients actually seem more problematic than ADM, TLM gradients;
310        issue is related to forward mismatch between g77 an ifort
311    o pkg/seaice: overhaul of thermodynamics
312     - growth.F and groatb.F are replaced by new routine seaice_growth.F
313     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
314     - move a few global fields out of SEAICE.h into seaice_growth.F and
315       make them 2D (FICE/QNETO/ ...)
316     - remove FO (it is the same as QNETO)
317     - introduce a few local fields to avoid modifying external fields such
318       as atemp, etc.
319    
320    checkpoint58s_post
321    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
322      changed exf_set_gen.F so that
323        genperiod=0 means input file is one time-constant field and
324        genperiod=-12 means input file contains 12 monthly means
325    o CG2D: use pre-computed solver main-diagonal (stored in common block);
326      this affects truncation error ; generate new output file for exp. which
327      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
328        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
329        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
330        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
331        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
332        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
333    o start implementation of deep-atmosphere and anelastic formulation
334    o verification: remove 2nd copy of input files and use script "prepare_run"
335      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
336    o mom_common/vecinv/fluxform: fix a few initialisation isssues
337    o profiles: fix for multithreaded case
338    
339    o diagnostics: rename few diags:
340      s/'PRESSURE'/'RCENTER '/g
341      s/'TICE    '/'oceFreez'/g
342      s/'TAUX    '/'oceTAUX '/g
343      s/'TAUY    '/'oceTAUY '/g
344      s/'SWFLUX  '/'oceQsw  '/g
345      s/DIFx/DFxE/g
346      s/DIFy/DFyE/g
347      and add few ocean-forcing diagnostics:
348      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
349    o modifications to pkg/seaice/growth.F and budget.F, which change results of
350      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
351      as actual snow thickness.  It now refers everywhere to effective snow
352      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
353    
354    checkpoint58r_post
355    o modifications to pkg/seaice/growth.F, which change results of
356      lab_sea experiment: fixes pertain to melting snow over open water, to
357      masking EVAP under sea ice, and to using the correct AREA variable for
358      computations of EVAP, PRECIP, HSNOW, and GHEFF
359    o add ability to read bathy, salt, and theta using MNC (off by def)
360    o add flooding algorithm and advection of HSNOW for pkg/seaice;
361      both are turned off by default and do no change any results
362    o seaice advection with pkg/thsice: a step toward the use of non-linear
363      advection scheme, but #ifdef or commented out for now (requires more EXCH).
364    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
365      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
366      in natl_box (affects results @ truncation level: update output.txt)
367    o multi-threading and IO:
368      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
369      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
370        (needed to work with SingleCpuIO): tested in all verif. exp.
371    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
372      affects the results (but none of the verification test uses this scheme).
373    o Adding some pkg/diagnostics capability to pkg/seaice
374      (will certainly be subject to changes)
375    o ctrl: adding new control variables:
376      lwflux, lwdown, evap, snowprecip, apressure, runoff
377    
378    checkpoint58q_post
379    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
380      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
381      high_res_cube configuration by 4% on Columbia.
382    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
383      add (in global_with_exf/code) a version of EXF_INTERP_READ without
384      dynamical allocation (seems to work in multi-threaded).
385    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
386      single CPU io) so that TAF does not have to see EESUPPORT.h
387    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
388    
389    checkpoint58p_post
390    o obcs: stop if obcs is used with useCDscheme = .true.
391    o shelfice:
392     - fix a sign error so that no slip at shelfice interface works
393     - remove stop for combination non-hydrostatic code and shelfice. That does
394       not mean, that the results are correct, but at least they are numerically
395       stable
396    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
397    o added adjoint exch routined for all exch*3d* routines
398      and updated flow directives
399    
400    checkpoint58o_post
401    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
402      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
403    o change controling S/R for writing pickup file (new S/R do_write_pickup)
404      and clean-up reading/writing of pickup files.
405    o fix local version of read/write pickup (NH part) in rotating_tank/code
406    o simplify EXCH interface:
407     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
408     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
409    o added the regrid package
410    o shelfice:
411     - add a simple boundary layer scheme to reduce noise
412     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
413    
414    checkpoint58n_post
415    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
416       local variable (not in common block).
417    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
418      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
419      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
420        to work with SingleCpuIO.
421    o add "_d 0" to real constant of pkg/cfc subroutines ;
422       update exp. cfc_exemple & tutorial_cfc_offline output files.
423    o multi-threading and IO:
424      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
425        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
426      - barrier before and after reading.
427      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
428      - avoid using MDS_WRITELOCAL for LAND pkg output.
429      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
430        common-block variables ; Allows multi-threading with master-thread IO.
431    o change default MAX_NO_THREADS from 32 to 4 ;
432      and stop cleanly when MAX_NO_THREADS is too small.
433    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
434    
435    checkpoint58m_post
436    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
437       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
438    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
439       keep global_ocean.90x40x15 (for AD testing) with former secondary test
440       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
441    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
442        add MITgcm_tutorials (= code + all the tutorials)
443    o ecco, option to compute cost for total ssh (mean+anom)
444    o consistent with addition of ptracer and ssh in pkg/profiles
445    o profiles: adding ptracer and ssh
446    o testreport: change multi-test output-file name
447      (from output.txt.{name} to output.{name}.txt)
448    o profiles: now ok for mutli-tiles case
449    o seaice: add 4 parameters for different advection schemes for area,
450      (effective) seaice thickness, enthalphy, and snow height. Their default
451      is the standard parameter SEAICEadvScheme
452    o calc_gw:
453     - add cosFacU in zonal viscous flux (harmonic.visc.).
454     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
455       of tutorial_plume_on_slope.
456    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
457    o calc_gw: true flux-form, account for horizontal grid spacing.
458      update rotating_tank results, but not plume_on_slope (affected at
459      truncation level, 11 digits).
460    
461    checkpoint58l_post
462    o calc_gw:
463     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
464     - remove side-drag for now (need to fix it); update plume_on_slope results.
465     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
466    o commit code to make SST/SSS weights spatially variable
467      (based on either variable in-situ or variable initial T/S weights)
468    o pkg/ecco:
469      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
470        now based on horizontally varying weights wthetaLev, wsaltLev
471      * cost_averagesflags now returns year indices in addition to day, month
472      * sflux balance is performed on annual basis
473        (sflxumm, sfluxmm2, bal_sfluxmm)
474      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
475        including separate counting and multipliers
476    o pkg/rbcs
477      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
478    
479    checkpoint58k_post
480    o testreport:
481     - always build in dir. "build" (if not there, mkdir build instead of building
482       & running in input)
483     - run in dir run (if it exists), in build otherwise.
484     - call prepare_run (if input/prepare_run exists)
485     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
486    o pkg/exf modifications to interpolation and rotation routines for more
487       reasonable treatment of North Pole singularity: for tracers North Pole
488       value is set to northernmost zonal-mean value, for zonal velocity it is
489       set to zero, and for meridional velocity it is set to northernmost value.
490    o pkg/exf/exf_check_range.F
491     - add tile index to diagnostics and move stop statement to the very
492       end of the routine.
493    o pkg/diagnostics: (diagnostics_main_init.F)
494      define title of isomorphic variables according to the current config.
495    o pkg/thsice with pkg/seaice dynamics:
496    - fix domain of computation (interior only, required for exf) and do exchanges
497    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
498    o towards a standard way of dealing with multi-threading in MONITOR
499      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
500    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
501       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
502    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
503    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
504    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
505       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
506    o tracer advection:
507     - clean-up and simplify calc_common_factors.F
508     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
509       advection subroutine (but still not used within DST advection S/R)
510    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
511    
512    checkpoint58j_post
513    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
514      from file (collects calls previously in FORWARD_STEP)
515    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
516    o adjoint store dir. adjusted accordingly
517    o genmake2
518      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
519    
520    checkpoint58i_post
521    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
522      on wind stress (SEAICEstressFactor defaults to 1.)
523    o Total number of Timers is finite (<=40): comment out 2 non-essential one
524      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
525    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
526      on CS-grid: no longer loosing mass.
527    o exf & curvilinear-grid: no longer modify longitude xC & xG.
528    o pkg/ggl90: fix sloppy output and fix a bug
529    o pkg/seaice: added SEAICEuseEVPpickup parameter
530      - Set to false in order to start EVP solver with
531        non-EVP pickup files when using SEAICEuseEVP
532      - fix sign error in diffusion in seaice_calc_rhs
533    
534    checkpoint58h_post
535    * Modifications for bottom topography control
536      o replace hFacC by _hFacC at various places
537      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
538      o add non-self-adjoint cg2d_nsa
539      o update autodiff support routines
540      o re-initialise hfac after ctrl_depth_ini
541      o works for 5x5 box, doesnt work for global_ocean.90x40x15
542    * Adding verification for 5x5 box (4-layer) bottom topography control
543    
544    checkpoint58g_post
545    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
546       used for mean seasonal cycle, mean diurnal cycle); add an example
547       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
548    o pkg/ggl90:
549      - add parameter (minimum surface kinetic energy)
550      - fix bug (avoiding division by zero)
551    o couple pkg/thsice to pkg/seaice:
552      - modify advection in seaice to accomodate new scalar fields to be advected
553      - only muliDimAdection scheme work with seaice/thsice
554      - mapping of thsice-variables to seaice-variables, back and forth
555      - does not break the verification experiments, but does not give the
556        desired results either
557    o pkg/seaice
558      - make (default) second order advection a bit less confusing?
559    
560    checkpoint58f_post
561    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
562      to pkg/seaice):
563      - new routines thsice_map_exf and thsice_get_exf provide the interface
564      - add an additional formal parameter to thsice_solve4temp
565    o pkg/exf:
566      - add new fields wspeed, snowprecip (to be able to couple to thsice)
567      - correct Stefan-Boltzmann constant
568      - new parameter for longwave surface emittance
569      - separate some stuff from exf_bulkformulae into new routines  
570        exf_radiation, exf_wind
571      - add new parameters and constants: longwave emissivity for ocean, ice
572        and snow, evaporation parameters over ice
573      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
574        either wind from stress or stress from wind
575    o pkg/thSIce:
576    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
577    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
578       and THSICE_CALC_THICKN
579    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
580    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
581      to make debugging easier.
582    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
583    o pkg/bulk_force:
584      - clean-up comments and parameters ;
585      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
586    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
587      generate new output for test-experiment: aim.5l_cs.thSI
588    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
589      testreport accordingly
590    
591    checkpoint58e_post
592    o SEAICE_CGRID adjoint done
593    o R_STAR adjoint implemented.
594      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
595      * need to sort out init. of h0facc, etc.
596    o Make pkg/profile fully independent of ecco,cost, etc. stuff
597      to be able to use it in pure forward.
598    
599    checkpoint58d_post
600    o upgrade simple test-experiment to tutorial example:
601     step.1: duplicate the experiment and (step.2) will remove the old copy.
602      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
603      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
604      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
605      tutorial_global_oce_biogeo    <- copy of dic_example
606      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
607      tutorial_plume_on_slope       <- copy of plume_on_slope
608      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
609      tutorial_global_oce_optim     <- empty for now (David ?)
610      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
611     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
612    o correct a sign problem in cost_scat.F
613    o obcs and ptracers: fix boundary conditions for advections schemes
614      with larger stencil
615    o thsice adjoint: start
616    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
617      completeness
618    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
619      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
620    o ptracers adjoint:
621      * avoid extensive recomputatations
622      * fix missing re-init. of gptr (missed by TAF)
623    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
624      me to turn off the excessive output to STDOUT that this package produces
625    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
626      and add those terms in Vector-Invariant formulation.
627    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
628      if the control period (xx_hfluxperiod etc) is 0
629    o in profiles pkg, clean routines and fix details
630    o in ecco pkg, reading ssh data:
631      fix problem in case the model does not start at iter0=0
632    o fix mnc-pickup/restart for ptracers
633    o new package prifiles:
634      code to compute profile-based cost by Gael Forget
635      (modifs in ecco, ctrl, autodiff)
636    o Benign bug fix in initialization (spotted by M. Mazloff) of
637      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
638    
639    checkpoint58c_post
640    o adjoint: finish NLFS adjoint and provide reference output in
641      verification/global_ocean.90x40x15/results_ad_nlfs
642    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
643      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
644      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
645      with SEAICE_CGRID defined.
646    o move calendarDumps from "data" to "data.cal" and clean-up the code
647      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
648    o add useEXF & useCAL flags (for now, set in hard-coded way)
649    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
650      (were missing in NH mode, and wrong in quasihydrostatic mode).
651      waiting for Chris updated version of calc_gw to add those CALLs.
652    o fix bug in quasihydrostatic S/R ;
653      add a test for this option: global_ocean.90x40x15.qshyd
654    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
655      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
656    o add on/off flag useOffLine for package OFFLINE
657    o seaice:
658      - modify advection so that it works also on the C-grid
659      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
660        problem in multi-tile runs with C-grid
661      - add flags for clipping ice velocities and/or masking solver forcing
662      - fix drag (ocean on ice) formulation and a bug that caused noise in the
663        C-grid solver
664      - added a few comments to seaice_diffusion.F
665      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
666        are now exclusive)
667      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
668        required re-ordering the code a little:
669       + make DAIRN global variable (defined in SEAICE)
670       + move computation of the viscosities eta and zeta into a new separate
671         routine (because I need to recompute them in seaice_ocean_stress.F)
672    
673    checkpoint58b_post
674    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
675      update output.txt of exp. aim.5l_cs.thSI
676    o various mnc cleanups and improvements:
677      + shrink lookup tables by factor of ~4
678      + better error reporting when running out of lookup space
679      + able to handle longer path/file names (up to 500 chars)
680    o adjoint:
681      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
682      - TBD: "hidden" mom_vecinv recomp. in dynamics
683    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
684     (allow to differentiate between forcing components using new integer flags:
685      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
686     and add new flag to put Dissipation tendency out of Adams-Bashforth.
687    o ecco
688      - enable trend removal from SSH anomaly obs.
689    o adjoint
690      - a fix for PmEpR when #undef EXACT_CONSERV
691      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
692      - try to fix "hidden" recomp. in forward_step for NLFS
693        (NLFS seems broken sometimes after I checked it in)
694    o seaice:
695     - add c-grid version of the dynamic solver:
696       + three new routines that are the c-grid substitute lsr, dynsolver
697         and ostres
698       + put a few fields that were local to dynsolver into global common
699         blocks, so that I can move the computation of stresses etc into
700         seaice_lsr (saves coding but may break the adjoint).
701     - replace more hardwired parameters by runtime parameters
702     - add ice masks that mask the rhs of the implicit solvers where there
703       is no ice (commented out in seaice_dynsolver, because i am not sure
704       if this works properly), eventually this should replace the clipping
705       of ice velocities in seaice_dynsolver to +/-40cm/s.
706    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
707      include it only where its needed
708    o move balancing of fluxes before the call of external_forcing_surf
709    o seaice:
710      - correct units of turning angles (now they are really in degrees)
711      - move computation of GWATX/Y out of main routine into dynsolver
712      - initialize GWATX/Y in seaice_init
713    o Apply mask on Fresh-Water flux (needed for SSH forcing).
714      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
715    o seaice: add runtime flags for turning angles (default to zero)
716    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
717      and trend from exf forcing and ctrl control adjustments
718    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
719      (since checkpoint57x_post)
720    o change the default rotation period to 86164.s = the Earth rotation
721    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
722      and based on a reference stratification. Tested within hs94.cs-32x32x5.
723    o seaice advection: add code for choosing between the default (2nd order
724      central differences) and multiDim advection schemes provided by
725      pkg/generic_advdiff
726    o seaice:
727      - removed all references to SEAICE_GRID.h fields from
728        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
729        (cubed-sphere configuration will change a little)
730      - grid computations in seaice_init are obsolete now.
731      - cleaned up code a little so that is easier to read (hopefully).
732      - added new (better?) discretizations of default advection and diffusion
733        (turn on with SEAICEuseFluxForm)
734      - replace 1 in 3d global fields by kSurface in growth.F
735      
736    checkpoint58a_post
737    o seaice:
738      - bug fix in advect.F
739    o shelfice:
740      - separate shelfice load anomaly from pload (breaks with time
741        dependent forcing), => introduce constant field shelficeLoadAnomaly.
742        Its default is 0., but it may be computed more cleverly from (unknown)
743        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
744        done offline. A good approximation of the pressure load anomaly is
745        necessary to avoid large initial adjustment processes underneath
746        deep-reaching shelfice.
747      - small fix in ISOMIP shelfice_thermodynamics
748      - add more sophisticated thermodynamics of Hellmer (1989), this is
749        now the default
750      - give a few constants more intuitive names
751    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
752      if bulk formulae are used in long integration (especially EmPmR). Turn
753      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
754      if balancePrintMean, the imbalance that is substracted is printed to
755      STDOUT.
756    o fix bug (typo) in obcs_apply_eta.F
757    o add a new package shelfice which enables us to model the circulation
758      underneath shelf-ice with draughts of hundreds of meters.
759     - works
760     - to do: + include improved thermodynamics
761              + check whether kSurfC (from model/inc/SURFACE.h) can be used
762                instead of new field kTopC
763              + can we use topoFile, Ro_surf and existing code in ini_depth.F
764                instead of new field R_shelfIce and new code in ini_depth.F
765                and ini_mask_etc.F?
766              + adjust vertical mixing schemes?
767    o seaice pkg:
768     - add a cpp-flag to include a simple formula for a salinity dependent
769       freezing point of sea water at the surface
770     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
771       meridional stresses are now different (and hopefully correct)
772    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
773       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
774       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
775    o pkg/diagnostics: add options and parameters for regional-statistics
776       diagnostics ; define regions by reading a region-mask from a file
777       (might add other options later)
778    o pkg/bulk_force:
779     - add option and parameters to use AIM surface-flux formulae.
780     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
781       others forcing fields (defined in PARM05, parameter file "data") are loaded
782       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
783     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
784     - use the right EXCH call for uwind,vwind (to work on CS-grid).
785     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
786       and parameters (note: calcWindStress replaces .NOT.readwindstress).
787     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
788    
789    checkpoint58
790    o add "--embed-source" option to genmake2 which, when the supporting
791      tools can be compiled (as determined by genmake2) will turn on the
792      embed_files package which then embeds the entire MITgcm source code
793      (*.[fFhc] + Makefile) used for the build within the executable
794      - requested by CNH but off by default
795      - adds a paltry <9MB to the mitgcmuv executable in most cases
796      - only writes the output when useEMBEDSRC in eedata is true
797    o clean up 3-dim. relaxation codes:
798      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
799      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
800      * Thanks to Tom Haine for testing!
801    
802    checkpoint57z_post
803    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
804      affects output (@ truncation level) of exp. plume_on_slope ; updated.
805    o fix the pickup behavior for obcs in combination with ptracers
806    o fix a bug in ptracers_external_fields_load
807    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
808      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
809    o transfered surface NH pressure to eta field (if exactConserv).
810    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
811         and update lab_sea output.txt file.
812    o completing 3-dim. relaxation code: additional term
813         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
814      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
815      * At compile time, in "EXF_OPTIONS.h" set
816          #define  ALLOW_CLIMTEMP_RELAXATION
817          #define  ALLOW_CLIMSALT_RELAXATION
818      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
819          tauThetaClimRelax3Dim = 15552000.0,
820          tauSaltClimRelax3Dim  = 15552000.0,
821      * 3 cases:
822          1) Use a constant-in-time 3-dim. field
823          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
824          3) Real-time relax. to time-evolving prescribed field
825    o Adding Laplacian-type smoothness constraint on
826      initial and boundary (forcing) controls (ic, bc)
827      * enable at compile-time via
828        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
829      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
830      * Absolute scale somewhat unclear so far
831      * no area weighting was included since no other cost term does so far
832    
833    checkpoint57y_post
834    First step for a NLFS adjoint
835    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
836    o new init. routines for calc_r_star, calc_surf_dr
837    o still need to deal with ini_masks_etc
838    o testreport seemed happy
839    checkpoint57y_pre
840    
841    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
842    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
843    o add new offset feature to offline pkg (plus minor cleanup)
844    o cfc fixes for final year of integration
845    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
846      be in GCHEM_OPTIONS).
847    
848    checkpoint57x_post
849    o fix testreport Pb in multiple test experiment.
850    o cleanup our namelist syntax in verification:
851      - make it more F95 standards compliant (some work still needed)
852      - allows the vast majority of our tests to work with gfortran
853    o Non-Hydrostatic:
854     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
855     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
856    o Allow to apply AB on T,S rather than on AB(gT,gS):
857     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
858     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
859       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
860     - need a "clever" read_pickup to restart from the other AB formulation
861    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
862    o remove some unused variables (reduces number of compiler warnings)
863    o adjoint
864      * Disable useVariableViscosity for adjoint for time being
865        (there are a number of extensive recomputations)
866      * Initialize certain variables needed for adjoint
867    
868    checkpoint57w_post
869    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
870                 fix the singleCpuIO RS version of MDSWRITEFIELD
871       and add a WARNING if using globalFiles=T with multi-processors.
872    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
873      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
874    o tracer advection scheme:
875      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
876       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
877       was not very convenient).
878      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
879       (further tests needed for the implicit DST & Flux-Limiter schemes).
880    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
881      and sRef for convenience, handy, when you want to initialize
882      ptracers in a large domain with a constant non-zero value. Also,
883      untangle ptracers_init.F a little.
884    
885    checkpoint57v_post
886    o change dome exp. to use variable viscosity in side-drag terms.
887    o remove all the files from the cfc_offline test since they are now
888      incorporated into tutorial_cfc_offline which has been producing
889      identical results for a few days of testing
890    o add new parameter: sideDragFactor to enable half-slip-side BC
891      and change side-drag S/R to use viscosity from mom_calc_visc
892      (can switch back by setting sideDragFactor=0.); affects results at
893      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
894       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
895    o vorticity & strain are now computed without masking, to account for
896      no-slip-side BC in variable viscosity calculation ; mask is applied
897      anyway later on, before computing advection/coriolis terms.
898    o modify exp4 to test new obcs support for reading from external files
899      and for passive tracers
900    o fix behavior of ptracers_monitor when monitor output is written to a
901      netcdf-file; still not independent of monitor.F (writes in the same
902      file).
903    o change default value of tRef (put a uniform, meaningful value for ocean
904      & atmos) and initialize sRef (was missing, as Martin mentioned).
905    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
906      to be proportional to enstrophy dissipation length.  Thus,
907       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
908      This is now consistent with Smagorinsky and with the manual.
909    
910    checkpoint57u_post
911    o OBCS and PTRACERS: add open boundary support for passive tracers
912      - either use homogenous (pseudo) v.Neumann conditions or prescribe
913        OB-values from file; this is not different from the way theta and salinity
914        are treated
915      - however, Orlanski-radiation conditions are not supported, and the model
916        will stop if you use pTracers and Orlanski at the same time.
917      - beefed up the rountine obcs_external_fields_load: now only those open
918        boundary values are overwritten with values from files for which there
919        are really files, otherwise the OB-fields remain untouched. This makes
920        it possible to use different OBs at different ends of the domain (as
921        with EXF)
922    o reduce number of exch calls in shap_filt (s2).
923    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
924      truncation level) 4/5 MLAdjust test results (11&12 digits match).
925    
926    checkpoint57t_post
927    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
928    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
929      same truncation, independent of the face number: affects affects several
930      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
931    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
932      note that biharmonic viscosity + no-slip was not tested in any experiment.
933    o fix bug in non-linear free-surf side-drag ; generate new output for
934      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
935    o make mnc honor the writeBinaryPrec flag for most kinds of output
936    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
937    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
938      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
939    o add brackets in multi-terms sum to get same truncation, independent of
940      the face number (manage to get exactly same value of gU,gV at the cs-edge)
941      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
942    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
943      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
944      a maximum grid-scale Reynolds number.  Also, changes all length calculations
945      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
946      Suggested values of viscosity parameters found in mom_calc_visc.
947      Many new viscosity diagnostics available.
948    
949    checkpoint57s_post
950    o Add clearing-house for viscosity calculations, mom_calc_visc and
951      correct numerous bugs in LeithD and Smagorinsky discretizations.  
952      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
953      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
954      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
955      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
956      The Strain-Tension form is now called with useStrainTensonVisc=.true.
957      ViscAhStrain and viscAhTension are now retired.
958    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
959    o In response to JMC's bug report, genmake2 now ignores any soft-links
960      that it finds in the *current* directory when searching for files.
961      Soft-links found in any other source directories will still work as
962      they did before.
963    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
964      a C routine to unlimit the stack size
965    o mnc-ify pkg/aim snapshot vars
966    o mnc-ify pkg/land as requested by Daniel
967    o various changes to mnc including:
968      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
969      - output can now be grouped so that all files within a group
970          change the ITER portion of their names in lock-step together
971      - can now read ("global") PER-FACE (in addition to PER-TILE) files
972          and works with both EXCH1 and EXCH2 (but needs more testing)
973      - writing works for all verification test cases w/ g77 on Linux
974    
975    checkpoint57r_post
976    o make MNC variable initialization happen earlier
977    o add diagnostics for (almost) each term of the momentum Eq.
978    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
979    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
980    o remove MINIMAL_TAVE_OUTPUT option ;
981      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
982    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
983      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
984    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
985    o add time-dependent SST, SSS control
986    o cost terms in ecco/ modularized (new cost_generic.F)
987    o cost_averages routines are modularized (new cost_averagesgeneric.F)
988    o new infrastructure for seaice model vs. obs misfits in seaice/
989      * driver from the_main_loop.F is seaice_cost_driver.F
990      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
991      * gradient check in Exp. 6a of natl_box_adjoint/
992    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
993      (see README file)
994    
995    checkpoint57q_post
996    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
997    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
998      - bug was reported by Jean-Michel and Ian Fenty
999    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1000      update exp. cpl_aim+ocn output.
1001    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1002      Needed for high-res. runs with large global files
1003      to be able to limit tapelev size
1004    o Changed some tests for adjoint:
1005      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1006      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1007      * global_ocean.90x40x15/ back to default 3-level checkpointing
1008    o Modifications to enable scripted COMMON to MODULE conversion
1009      * verification/OpenAD/code/ has necessary scripts and description;
1010      * converts, compiles and runs successfully;
1011    
1012    checkpoint57p_post
1013    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1014    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1015      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1016    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1017    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1018      (was already the case for dissipation with mom_vecinv,
1019       and also the case for grad.PhiHyd when staggered-timeStep)
1020      This will allow to put dissipation out-off the AB time-stepping.
1021     Unfortunately, affects truncation error. Update output of exp. that "fails"
1022      (cg2d matching number) and leave the others for later: front_relax(10),
1023      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1024      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1025    
1026    checkpoint57o_post
1027    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1028      (2) its ready to be documented during the 20050801 DocFest
1029    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1030      for ideal_2D_oce and lab_sea on linux_ia32_g77
1031    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1032      in global1x1_tot/code_seaice_adj to access indices 32, 33
1033      (worth another tag)
1034    
1035    checkpoint57n_post
1036    o adding precip control xx_precip 32
1037    o adding swflux control xx_swflux 33
1038    o Replacing 10 forcing penalty cost routines by 1 generic.
1039    o Implementing partitioning in time-mean and variable adjustment
1040      for atmos. state.
1041    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1042    o in natl_box_adjoint:
1043      * updated exp 1 to 10
1044        (but does not have time-mean vs. variable split results yet)
1045    o updated global1x1/*_seaice_adj/
1046      to incorporate latest changes
1047    o enable useSingleCpuIO for mdsio vector routines
1048      (applies in particular to tapelev I/O)
1049    o removed inefficient K-loop in all active_file*control*.F
1050    
1051    checkpoint57m_post
1052    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1053      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1054    o pkg/exch2: filling of face-corner halo regions is optional
1055      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1056    
1057    checkpoint57l_post
1058     tag before updating tutorials (pre-release-2)
1059    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1060       for output and interpolation of input fields onto model grid)
1061    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1062       Affects results of exp. rotating_tank ; update output.txt.
1063    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1064          and taking the square quantity and/or using a fraction-weight field.
1065    o fix aim_diagnostics_init.F mate numbers.
1066    o add mnc output capability to diagnostics/diagstat and update
1067      our cvsignore files for the ACSII output generated
1068    
1069    checkpoint57k_post
1070    o lab_sea now uses diagnostics package and provides a suite of
1071      new EXF diagnostics output.
1072    
1073    checkpoint57j_post
1074    o exf
1075      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1076        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1077        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1078      * extended diagnostics output
1079        - now includes all EXF variables
1080        - hs, hl moved to common block
1081        - separate S/R for diagnostics, called after ctrl vector is added
1082        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1083        - EXFqnet contains true Qnet (i.e. includes qsw)
1084      * updated verif. lab_sea, global_with_exf
1085      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1086        to ensure that diagnostics sees a true EXFqnet
1087    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1088    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1089      several times with different frequencies.
1090    o mnc-ify the thsice package as requested by Daniel Enderton
1091      - the monitor--MNC output needs work
1092      - many attributes need to be added (most are currently blank)
1093    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1094      - many attributes need to be added (most are currently blank)
1095    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1096    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1097    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1098      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1099         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1100    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1101     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1102    
1103    checkpoint57i_post
1104    o Diagnostics package was changed: diagnostic allocation is now deactivated
1105      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1106    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1107      add 1rst Order upwind vertical Shear.
1108    o add a quick fix for A/B checkpointing in OFFLINE mode
1109    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1110      end-run around the C/Fortran linking horror in eesup/src/timers.F
1111    o added pkg/runclock: allows user to terminate run based on wall clock
1112    o added non-hydrostatic scaling parameter: nh_am2
1113    o pkg/my82: futile attempt to make results compiler-independent by adding
1114      some "_d 0", etc. no effect.
1115    o for mnc output, fill the 'T' coordinate var with myTime and create a
1116      separate 'iter' variable for iteration count
1117    o pkg/diagnostics:
1118      add new capability: output of Global/Regional & per-level statistics ;
1119      tested against monitor output (including land & thSIce) on various exp.
1120    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1121    
1122    checkpoint57h_done
1123      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1124      data.diagnostics, data.gchem, data.ptracers) is done.
1125    
1126    o pkg/diagnostics: prepare for Global/Regional statistics.
1127      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1128    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1129      and rename it: DIFFERENT_MULTIPLE
1130    
1131    checkpoint57h_post
1132    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1133    o pkg/diagnostics: change output frequency, now in seconds (instead
1134      of Nb of iterations). This requires to change data.diagnostics.
1135    checkpoint57h_pre
1136    
1137    o in mnc, let the user create the output dir if both mnc_outdir_date
1138      and mnc_outdir_num are false
1139    o add fflags() to pkg/diagnostics which allows one to specify, on a
1140      per-file basis, the file precision [default behavior is unchanged]
1141    o added diagnostics to pkg/kpp, including computation of mixed layer
1142      depth based on a temperature/density criterion
1143    o updated verification/natl_box to test the new pkg/kpp diagnostics
1144    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1145    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1146    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1147      not mnc -- this mistake was found by JMC and is now corrected
1148    
1149    checkpoint57g_post
1150    o add Adams-Bashforth 3rd Order time stepping:
1151      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1152      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1153    checkpoint57g_pre
1154    
1155    o make lambda[Theta,Salt]ClimRelax spatially varying
1156      (default remains spatially uniform constant based on tau)
1157    o added new control variables
1158      * init. uVel, vVel, etanN
1159      * lambda[Theta,Salt]ClimRelax
1160    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1161      (suggested by G. Forget)
1162    
1163    checkpoint57f_post
1164    o add parameter "baseTime" = model base time = time at iteration zero
1165      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1166      account for baseTime shift
1167    o move Coriolis arrays from PARAMS.h to GRID.h
1168    checkpoint57f_pre
1169    
1170    o mnc-ifying the seaice package
1171    o introduced an alternative length scale calculation for use in the limiting
1172      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1173    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1174    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1175      as well as grad(vort3).  Made it compatible with both approximate form
1176      for the cubed sphere and full form of these gradients.  Added flag
1177      useFullLeith to select between approximate and full form.  
1178    o add "d0" in getcon.F to reduce differences between compilers/platforms
1179      update output.txt of exp. fizhi-gridalt-hs
1180    o change port_rand funtion to allow to set the seed.
1181    o fix obscure MNC bug involving conversion between reals and integers
1182      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1183        new version is now more standards-compliant
1184    o adjoint-related modifications
1185      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1186      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1187      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1188    
1189    checkpoint57e_post
1190    o Adding eddy stress controls a la Ferreira et al.
1191    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1192    
1193    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1194      update output.txt of exp. fizhi-gridalt-hs
1195    o add more "Z" dimensions and associated coordinate vars to MNC
1196    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1197    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1198      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1199      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1200      months and years.  Requires pkg/cal.
1201    o diagnostics: add pickup functionality
1202      - off by default for backwards compatibility
1203      - current version only uses MDSIO -- MNC will be added
1204    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1205    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1206    
1207    checkpoint57d_post
1208    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1209    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1210      output from the diagnostics package
1211    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1212    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1213      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1214    o add coordinate variables to the MNC output from the diagnostics package
1215    o change MNC-flags default value: true when useMNC=TRUE
1216    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1217      the ability (off by default) to read the grid information using MNC
1218    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1219    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1220    o do snap-shot diagnostics at the middle of the time-interval (instead of
1221      at the end).
1222    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1223      new test for AIM with thSIce + slab-ocean
1224    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1225    o move state variable diagnostics to the beginning of the time step ;
1226      (note: still needs some work specially for snap-shot diagnostics)
1227      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1228    
1229    checkpoint57c_post
1230    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1231    o generate new output.txt files on faulks with g77 & the new -ieee option
1232    checkpoint57c_pre
1233    
1234    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1235      update output.txt of exp. global_ocean.90x40x15
1236    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1237      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1238    o add saltFlux(+File) forcing capability with periodicExternalForcing
1239    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1240    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1241    o improvements for the MNC output from DIAGNOSTICS:
1242      - correct handling of the unlimitied dimension
1243      - all dims now have associated coordinate variables
1244      - variables located at U, V, and Corner ("Z") points are now written
1245        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1246        *all* data points are output
1247    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1248    o added pkg/seaice/seaice_monitor.F
1249    o mdsio_readfield.F can now read files visible only to master MPI process.
1250    o pkg/seaice: some test code for ice-modified ocean stress
1251    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1252      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1253      spurious negative numbers for precipitation and humidity.  Will cause
1254      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1255    o pkg/ctrl/
1256      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1257        May be enabled via doPackDiag
1258      *  introduce z-scaling of
1259         + gradient (doZscalePack) and
1260         + control (doZscaleUnpack)
1261    o pkg/mdsio/
1262      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1263      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1264    
1265    checkpoint57b_post
1266    o simplify options in diagnostics_fill arguments (remove weird combinations)
1267    o fix MNC coordinate variables so that they now contain per-face index
1268      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1269      general, EXCH2 grids are only aligned to a "local" coordinate system
1270    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1271    o Implement instantaneous output within pkg diagnostics:
1272      setting a negative frequency in data.diagnostics produces
1273     "snap-shot" output (as opposed to time-average if freq > 0)
1274    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1275      NOTE: change ptracer diagnostics name: use 2 characters to work with
1276            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1277    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1278      becomes the coordinate variable for the 'T' dimension
1279    o add CF-style coordinate variables to MNC
1280      - just a first cut:  numbers are meaningless on the cubesphere and
1281        missing along the T axis but otherwise it works!
1282    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1283    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1284    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1285      this is based directly on what the model compute, so that the content of
1286      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1287    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1288    o clean up build options files for SunOS, in particular
1289      - remove -traditional from xmakedepend
1290      - change -xarch=v9 to -xarch=native for f77
1291      - restore use of make (not gmake)
1292      - add CC=gcc if using g77
1293    o changes per discussion of AM, JMC, & EH3 today:
1294      - move redundant "grid" variables out of "state" -- in preparation of
1295        creating proper CF-style coordinate variables and in recognition
1296        that any/all grid variables can be easily copied (eg. w/NCO) from
1297        the grid files into any of the other NetCDF files
1298      - *always* output grid variables with MDSIO (this will eventually be
1299        changed)
1300      - output MNC grid file if useMNC is true
1301    o every instance of _END_MASTER() has been found and replaced with
1302      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1303      preprocessors
1304    o re-arrange diagnostics pkg initialisation:
1305     - allow each package to extend the available diagnostics list
1306     - add some checking and fix small problems (multi-threaded, ...)
1307     - new S/R diagnostics_fill (replace fill_diagnostics):
1308       look through the short list of active diag. (instead of the long list)
1309       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1310    
1311    checkpoint57a_post
1312    o this set of changes restores TAMC compatibility
1313      tested for global_ocean.90x40x15 adjoint on trough
1314      (what a pain)
1315    
1316    checkpoint57a_pre
1317    o some modifs in tools/build_options for sunos
1318    o call ctrl_pack for ctrl at end for optimcycle=0
1319    
1320    checkpoint57
1321    o add horizontal bi-harmonic viscosity for vertical velocity
1322      - new parameter viscA4W (defaults to viscA4)
1323      - affects only non-hydrostatic code
1324      - to be done: no-slip lateral boundary conditions
1325    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1326    o implement Implicit Vertical advection for pTracers
1327    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1328      (implemented also for implicit vertical diffusion & advection)
1329    o OBCS: extend application of tracer open boundary conditions
1330      to a strip beyond the boundary of width Olx/Oly
1331    o add call monitor to TAF set of required calls (flow directives)
1332      and include in natl_box_adjoint
1333    o untangle a few ifdefs related to cost, ctrl, autodiff
1334      untangel a few ALLOW_ECCO_OPTIMIZATION
1335    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1336      (theta2, salt2 in ecco_cost_weights)
1337    
1338    checkpoint56c_post
1339    o OBCS as control variables
1340      - update ctrl_ad_diff.list, obcs_ad_diff.list
1341      - remove balance of obcs controls from default
1342      - fix index bug nobcs in ctrl_init
1343      - fix dummy fields filen in ctrl_pack
1344      - add dummy weights for obcs
1345    o lsopt: comment out fort.94 output
1346    o optim:
1347      - remove unnecessary header files
1348      - adjusted namelists
1349      - add xerbla.F to Makefile
1350    o exf:
1351      - multiple modifications of exf_check_range
1352      - unit change in exf_init_runoff from [m/year] to [m/s]
1353    o mdsio:
1354      - i/o-vector change debugLevel from debLevA to debLevB
1355    
1356    checkpoint56b_post
1357    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1358      is called from DO_THE_MODEL_IO
1359      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1360      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1361      - clean up PTRACERS_WRITE_TIMEAVE a little
1362    o add another verification experiment that tests both the cfc-pkg and
1363      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1364      reactive tendencies treated inline with regular timestepping
1365    o testreport previously did a lousy job of comparing small numbers, so
1366      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1367      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1368      testreport.
1369    o ptracers_monitor: bug fix for MPI
1370    
1371    checkpoint56a_post
1372    o GCHEM: finish reorganizating the package
1373      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1374        (introduces another 3D-array for each passive tracer, but only if
1375        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1376        gchemTendency is not needed because the timestep is done separately)
1377      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1378      - GCHEM is now---more or less cleanly---separate from PTRACERS
1379      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1380        so clear to me how that should be done in a general way.
1381    o CFC: improve formatting of output in CFC_ATMOS
1382    o PTRACERS:
1383      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1384        that ALL experiments with ptracers enable can be checked. This makes
1385        GCHEM_MONITOR obsolete.
1386      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1387        monitorFreq
1388      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1389    o add PTRACERS (PTR0[1-5]) to testreport output
1390    o exf_check_range:
1391      * default changed to .TRUE.
1392      * will check values for niter0 if debLevA, every timestep if debLevB
1393      * STOP in exf_check_range if 'out of range'
1394      * range chosen generous to allow for potential extema
1395      TBD: a version with stricter range
1396           permitted range would be runtime parameters
1397    o GMredi:
1398      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1399      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1400      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1401    o GCHEM:
1402      - move call to GCHEM_FORCING_SEP, so that it is now called before
1403        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1404      - introduced a useGCHEM runtime flag and applied it everywhere.
1405      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1406        this flag is now only visible within GCHEM-pkg routines.
1407      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1408        be replaced by a 3D array that is computed before thermodynamics; for
1409        this, the tracer ID iTracer had to be included into the parameter list
1410        of ptracers_forcing
1411      - set up forward_step to call gchem_forcing, that will replace
1412        gchem_forcing_int in ptracers_forcing
1413      - cleaning up
1414    o small cleaning of exch2: remove files that are also in eesupp/src
1415    
1416    checkpoint56
1417    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1418    o mnc: cleanup "full" files--fixes out-of-memory problem
1419    o ECCO-GODAE
1420      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1421      * fully merged and updated from SIO code
1422        windstress sign change affects
1423        - exf_inscal_[u/v]stress
1424        - sign of xx_tau[u/v] adjustments
1425        - signs in cost_scat
1426      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1427      * natl_box_adjoint updated and compressed
1428      * 2-level checkpoint switch added
1429        (tested in EXP. 1 of natl_box_adjoint)
1430      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1431    o SVD
1432      * first complete, non-hacked version for SVD calculations
1433      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1434        performed via direct access files admtlm_vector.it????
1435        (via ctrl_[un]pack)
1436      * optimcycle is used for ARPACK iteration counter
1437        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1438      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1439        and add linear transforms where necessary
1440      * controls are initial/final SST, SSS (can be extended; need to check
1441        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1442    o mdsio: filename info to both stderr, stdout
1443    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1444      from sign change
1445    
1446    checkpoint55j_post
1447    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1448      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1449    o add consistent build directories and .cvsignore files to verification
1450    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1451    o make all subroutines 30 or less characters in length for certain older
1452      compilers to work (a thorough search only turns up two routines in
1453      pkg/ptracers)
1454    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1455      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1456    
1457    checkpoint55i_post
1458    o change arrays for total vertical diffusivity (2.D if explicit,
1459      3.D if implicit) ; each ptracer uses its own background value.
1460    o added mnc/NetCDF output capability to ocn_compon_interf
1461      - added bits to verification/cpl_aim+ocn so that it can run on
1462        ITRDA and other clusters without the mpirun "-wd" option
1463    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1464      configuration
1465    o give MNC the ability to create additional files rather than
1466      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1467      - the default is just less than 2GB which is a practical limit
1468        on many systems
1469    o Compute the non-local term using either KPP vertical diffusivity (=default)
1470       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1471    
1472    checkpoint55h_post
1473    o add verification test "vermix"
1474    o remove all the *_ioinc flags and replace with the single global
1475      outputTypesInclusive flag
1476    o allow to set a vertical profile of vertical diffusivity for T & S
1477    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1478    o useMNC moved from data.mnc to data.pkg
1479    
1480    checkpoint55g_post
1481    o Renaming carbon AD experiments to comply with testreport conventions
1482    o Updating adjoint of Held-Suarez hs94.1x64x5
1483    o Fixing directives for non-ECCO forward_step, after ECCO directives
1484      have been fixed to avoid recomp. of do_oceanic_phys
1485      Works well for global_ocean.90x40x15,
1486      but recomp. issue remains for carbon
1487    o Updating adjoint output for natl_box_adjoint after
1488      pkg/ecco has been modified (see taga c55d_post)
1489    
1490    checkpoint55f_post
1491    o rename to timeave_init_fixed
1492    
1493    checkpoint55e_post
1494    o some delicate re-shuffle of store directives to avoid one
1495      extra call of do_oceanic_physics
1496      affects ecco_the_main_loop.F, do_oceanic_physics.F
1497      checkpoint_lev1_directives.h
1498    o NB: this may break global_ocean adjoint temporarily,
1499      but it is clear how to fix it. Will do later, need this now.
1500    
1501    checkpoint55d_post
1502    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1503    o ecco_cost_weights is modified to 1x1 runs
1504    o modifs to allow observations to be read in as
1505      single file or yearly files
1506    o enable to read exf forcing fields as either
1507      single file or yearly files (flag useExfYearlyFields)
1508    checkpoint55d_pre
1509    
1510    o switch between 2-level and 3-level checkpointing
1511    o add ability of MNC to write local and "partial" (eg. 2D slices where
1512      the full 3D field is never actually stored) arrays to NetCDF files
1513      with the correct (that is, the complete multi-dimensional) set of
1514      array indicies
1515      - used in mom_vecinv() to write the diagFreq output
1516      - tested (demonstrated) in verification/aim.5l_cs
1517    o further mnc-ification
1518      - add verification/lab_sea to the list with mnc setups
1519      - fix undefined mnc v-names in cd_code
1520      - add kpp to mnc output (both snapshot and timeave)
1521    o non-hydrostatic code
1522      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1523        in calc_gw.F
1524      - defaults to viscAh
1525      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1526        friction or Leith) in non-hydrostatic mode, as long as there is
1527        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1528    o pkg/cost
1529      extend simple cost functions to treat time mean quantities
1530      (T,U,V) via cost_accumulate_state from cost_tile
1531    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1532        be 2 times larger than the minimum size the advection scheme requires.
1533        now get a perfect conservation of salt in advect_cs test-exp (updated)
1534    o GGL90 (Gaspar's TKE mixed layer)
1535      - add horizontal diffusion of TKE, requires exchanges in
1536        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1537        default. In OPA there is no horizontal diffusion of TKE but the
1538        mixing coefficients are computed from a horizontal average of TKE of
1539        6 points or so. I think that diffusion has a little more physical
1540        justification.
1541      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1542        was in vain)
1543      - mask tke-variable in ggl90_init
1544    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1545    o fix biharmonic diffusion on CS-grid.
1546    o more obcs stuff
1547      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1548        for reading boundary values. This routine is called from
1549        obcs_prescribe_read
1550      - updated obcs_check
1551      - changed sponge layer relaxation parameter units for days to seconds
1552      - turned off sponge layer by default
1553      - changed argument list of OBCS_CALC to myTime+deltaTclock
1554      - fixed about 35 bugs in obcs_external_fields_load
1555    
1556    checkpoint55c_post
1557    o obcs stuff
1558      - new runtime flags useOBCSprescribe, useOBCSbalance
1559      - re-arranged obcs_calc
1560      - moved exf_getobcs to obcs_prescibe_read
1561        obcs_prescibe_read is called after ORLANSKI stuff
1562        and independent of it (executable can contain all).
1563      - updated obcs_check
1564      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1565        These may be necessary only if tangential velocities are
1566        prescribed at OB, not sure, needs testing.
1567    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1568      which simplifies the calls and passes the ifc check-bounds test
1569    
1570    checkpoint55b_post
1571    o add a 2D scalar, Z location, exchange_2 routine.
1572    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1573      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1574      affects advect_cs results (for the wrong reason): update output.txt
1575    o use a more standard discretization for biharmonic viscosity ;
1576     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1577      affects results of dome set-up: update output.txt
1578    o fix gad_advection.F (CubedSphere part), back to version 1.23
1579    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1580    
1581    checkpoint55a_post
1582    o merged code to
1583      * prescribe/read time-dependent open boundaries
1584        (works in conjunction with exf, cal)
1585      * sponge layer code for open boundaries
1586      * each boundary N/S/E/W now has its own CPP option
1587        (healthy for the adjoint)
1588    
1589    checkpoint55
1590    o up-to-date adjoint of previous breaks
1591      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1592      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1593      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1594      - carbon: * remove tr1-related adjoint verification
1595                * add ptracer as control variable
1596    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1597      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1598    
1599    checkpoint54f_post
1600    o in verification/carbin/ remove experiment related to
1601      ALLOW_PASSIVE_TRACER (array tr1 etc)
1602      code_ad/ input_ad/ results_ad
1603    
1604    o add two new packages
1605      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1606        + subject to optimization (memory)
1607      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1608        + subject to reordering (many GOTOs in the original code)
1609        + so far opps is called for every (i,j) point, and then operates in
1610          the vertical; one may want to reorder the scheme in order operate in
1611          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1612          fields)
1613    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1614      - all verification tests compile and run with linux_ia32_g77
1615      - defaults are compatible with current input files--nothing
1616        should change if you were not previously using MNC
1617      - MNC output has been added in numerous places (eg. timeave)
1618        but there are still a few writes not yet do-able with MNC
1619        (this is in progress)
1620      - flags now allow for either/or/both use of MDSIO and MNC and
1621        documentation will soon follow
1622      - numerous small formatting cleanups for ProTeX
1623    o add version info (via BUILD_INFO.h) to MNC and stdout
1624    
1625    checkpoint54e_post
1626    o add two new packages
1627      - pp81 (Packanowski and Philander, 1981), Richardson number and
1628        stratification dependent mixing
1629      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1630      - these scheme operate in a similar manner as KPP (without ghat, of
1631        course), however there is only one diffusivity that is used for both
1632        temperature and salinity (and passive tracers)ç
1633    o add offline package
1634    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1635      provided by Stephanie Dutkiewicz
1636    o genmake2: add ability to search for C compilers and cleanup test output
1637      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1638    
1639    checkpoint54d_post
1640    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1641    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1642      leading to additional shift by 5 days each year of integration
1643       (i.e. leading to considerable offset over the years)
1644    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1645    o start with no AB and no initial filtering (staggerTimeStep):
1646      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1647    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1648      (external loading & cpl import/export stay in forward_step.F)
1649    o update coupling interface to work with new staggerTimeStep
1650    o change MDSIO ptracers_pickup.
1651    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1652    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1653    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1654    
1655    checkpoint54c_post
1656    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1657      this affects (truncation error) output.txt of test-exp:
1658       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1659    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1660    o change Qnet to always be the net heat flux, (+upward).
1661      affects (truncation error) output of natl_box exp.: updated
1662    o define the max number of passive tracers in PTRACERS_SIZE.h
1663    o start to test mnc routinely in exp0
1664    o add sea-ice loading (sIceLoad) as a new forcing field.
1665    
1666    checkpoint54b_post
1667    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1668       impressive on Altix and Opteron systems)
1669    o diagnostics can now write NetCDF files through the mnc package
1670    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1671    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1672    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1673      affects (truncation error) output of lab_sea & natl_box exp.: updated
1674    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1675    
1676    checkpoint54a_post
1677    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1678    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1679    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1680    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1681      + internal_wave (shift in writing cg2d_ini_res)
1682    checkpoint54a_pre
1683    
1684    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1685      - modified verification/lab_sea and natl_box_adjoint accordingly
1686    
1687    checkpoint54
1688    checkpoint53g_post
1689    o prepare splitting of thermodynamics: store convect.counter in common block
1690    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1691      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1692    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1693    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1694    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1695    o restore adjointability
1696    
1697    checkpoint53f_post
1698    o modifications that affect AIM experiment results (update output.txt):
1699      - no advection of S at top interface Nr (pkg/generic_advdiff)
1700      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1701    o AIM pkg:
1702      - include stability function into surf.Flux derivative relative to Tsurf
1703      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1704    
1705    checkpoint53e_post
1706    o merged cylindrical coord configuration
1707    o added rotating_tank experiment
1708    checkpoint53e_pre
1709    
1710    checkpoint53d_post
1711    o faulks upgraded: re-generate output.txt that have changed:
1712       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1713    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1714    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1715    o added Sadourny discretization of Coriolis
1716      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1717      - re-enabled use of omega3 (useAbsVorticity)
1718    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1719      vector-invariant equations
1720      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1721    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1722      hopefully without new bugs
1723      - still to do: biharmonic friction for non-hydrostatic w
1724    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1725    o regenerated output for global_ocean_ebm (using -ieee)
1726    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1727      of mom_common/
1728      - simple re-arrangement of instructions within computing loop
1729    checkpoint53d_pre
1730    
1731    checkpoint53c_post
1732    o new version of coupler for AIM+thSIce and Ocean models
1733     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1734     - land: change Evaporation of snow
1735     - aim with thSIce: fix bug in snow-precip.
1736    o changes to calc_gw.F
1737     - bug fix for w^2 term near the bottom boundary
1738     - (hopefully) improve the lateral slip boundary condtions for use with
1739        partial/looped cells
1740      - because the bug fix changes two verification experiments anyway (exp5
1741        and plume on slope), change the lateral boundary condition from half slip
1742        to the value of no_slip_sides
1743    o ebm package wasnt quite up to the parallel task. Fixed that.
1744    o Adjoint of EBM package + verification
1745      * TLM OK
1746      * ADM not sufficient accuracy yet (needs further testing)
1747    
1748    checkpoint53b_post
1749    o Commiting new energy balance model to repository
1750      * package is pkg/ebm
1751      * verif. is verification/global_ocean_ebm
1752      * references are in ebm_driver.F
1753    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1754    C        Global thermohaline circulation. Part I:
1755    C        Sensitivity to atmospheric moisture transport.
1756    C        J. Climate 12(1), 71-82
1757    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1758    C        Global thermohaline circulation. Part II:
1759    C        Sensitivity with interactive transport.
1760    C        J. Climate 12(1), 83-91
1761    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1762    C        Destabilization of the thermohaline circulation
1763    C        by atmospheric eddy transports.
1764    C        J. Climate 7(12), 1870-1882
1765    o Will need long integration testing.
1766    checkpoint53b_pre
1767    
1768    o created pkg/mom_common in preparation for variable viscosity code
1769    o renamed and split ini_mnc_io
1770    o pkg/land: only liquid water can diffuse or run-off
1771    o AIM using land: soil wetness availability account for snow
1772    o added printMapIncludesZeros to EEPARMS namelist
1773    
1774    checkpoint53a_post
1775    o restore TAMC compatiility for exf_constants.h
1776      (no usage of _d in .h)
1777    o Additional storing in KPP in an attempt to fix
1778      TAMC problem with adjoint of KPP code.
1779      (no success...)
1780      Identical code works fine with TAF.
1781    o Fixed verification/natl_box_adjoint experiments.
1782      Initial conditions for Experiments 4 and 5 are now
1783      set to "SEAICE_initialHEFF=0", which is more reasonable,
1784      and hence gives results closer to that of Experiment 2.
1785      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1786    
1787    checkpoint53
1788    o stable checkpoint with up to date adjoint
1789      TLM tests only run for 1st grdchk at the moment. Its unclear if
1790      this is a code problem or a problem with resetting code for g_
1791      variables that is being autogenerated wrong.
1792      Otherwise:
1793       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1794       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1795         are both still in chaos following their security messes.
1796    
1797    checkpoint52n_post
1798    o various build (mostly genmake2) changes including:
1799      - ability to build/run more easily within Cygwin and MacOS X
1800      - more complicated Makefiles with a stronger dependence on Gnu Make
1801    o pkg/seaice modifications
1802      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1803        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1804        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1805      - changed proxy for geostrophic velocity and updated
1806        verification/lab_sea/results/* accordingly
1807      - removed ADI dynamic solver from pkg/seaice
1808      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1809        they caused a segmentation fault under certain circumstances
1810      - removed unused field WATR
1811    o bug fix in exf-package:
1812      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1813         now reflect that.
1814    o small fixes in the cal-package:
1815      - set reference date to first of January for the 'model'-calendar
1816      - failing of cal_CheckDate in cal_FullDate now actually results in a
1817        warning
1818    o small modifications in exf-package to increase flexibility:
1819      - change climtempfreeze from a constant to a runtime parameter that
1820        is specified in data.exf_clim (default = -1.9)
1821      - introduce runtime parameter windstressmax (default = 2.0) that is
1822        specified in data.exf
1823    o fix in pkg/thsice:
1824      - update Evap (Tsf changes) to be consistent with Latent heat flux
1825      - maintain snow precipitation unchanged (even if Tsf >=0).
1826     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1827    
1828    checkpoint52m_post
1829    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1830      this does not change any of the results, because myIter=0 in swfrac always
1831      lead to jwtype=2 (the default anyway), but the call makes little sense
1832      as a default
1833    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1834    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1835      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1836    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1837    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1838    o extending useSingleCpuIO option to work with new exch2 I/O format
1839      - old-style, missing-tile I/O is still accessible by defining CPP
1840        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1841    o monitor package can write to NetCDF files and/or STDOUT
1842    o fix re-definition bug in MNC_GRID_INIT_ALL()
1843    o doc/api_reference added
1844      - a framework for building an API Reference Manual using all
1845        the "protex" comments embedded in the code
1846      - see pkg/generic_advdiff, pkg/mnc for examples
1847    o MNC:
1848      - make myThid the last argument for all subroutines
1849      - new default for the grid files: NO halos
1850      - add useMNC and other run-time flags
1851      - separate per-file-group handling of the unlimited dimension
1852      - early initialization of MNC w/ flags read at the eeboot stage
1853        and lookup tables set in initialize_fixed
1854      - write all MNC output to a freshly-created directory
1855    o thermodynamics sea-ice (thsice) is now tested with testreport.
1856    o test exp. advect_cs: use the standard cs32 grid ; update output.
1857    o Added functionality to grdchk:
1858      pick global i,j,k position (or nearest wet) where to perform check.
1859    
1860    checkpoint52l_post
1861    o new land formulation:
1862      a) use ground enthalpy as prognostic variable to ensure exact
1863         energy conservation.
1864      b) account for water temperature and for latent heat of freezing
1865         in all processes (rain, run-off, ground storage)
1866      c) compute surface and ground temperature implicitly.
1867    o aim_v23 modification for new land model:
1868      a) Treat separately land / ocean / sea-ice surface fluxes
1869         to allow implicit computation of land & sea-ice surface temp.
1870      b) add snow precipitation.
1871    checkpoint52l_pre
1872    
1873    o fix problem (when 1 tile is empty) in min/max monitor.
1874    o fix bug in timeAve (u,vZetatave in common block)
1875    o no restoring terms under ice for pkg/seaice
1876    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1877    o bug fix for pkg/seaice pickups
1878    o change MNC call locations and add coordinate attributes
1879    o mask vorticity at the corner ; affects global_ocean.cs output
1880    o fix ini_curvilinear_grid ; test CS experiments with mpi
1881    o aim.5l_cs: modify sea-ice fraction input file ; update output
1882    o exf: Adding simple range check routine for exf fields after read
1883    
1884    checkpoint52k_post
1885    o removed top-level directory "diags"
1886      - we migrated these functions to pkg/timeave a long time ago
1887    o fixed bug introduced in pkg/monitor
1888    o accuracy ctrlprec = 32 insuffient for gradient checks using
1889      averaged fields (I/O via cost_averages)
1890      -> use ctrl.h in active_file*.F to control I/O precision.
1891    o paramter list of CALL ADTHE_MAIN_LOOP
1892    o added initial do_the_model_io to ecco
1893    o set all ...Freq to zero after cost_final
1894      taveFreq, dumpFreq, pChkptFreq
1895    o MAIN and ECCO differentiability restored
1896    
1897    checkpoint52j_post
1898    o fix nchklev in tamc.h for global_ocean...
1899    o Bringing flow and store directives up-to-date
1900    o Really weird thing!
1901      call do_the_model_io from the_main_loop with parameters
1902      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1903      TAF places a faulty re-call of initialise_varia
1904      after cost_final call which should not be there!
1905    checkpoint52j_pre
1906    
1907    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1908      error messages
1909    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1910    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1911      debug output
1912    o modfied mdsio_writefield.F to handle non-global files under exch2
1913    o update AIM Cubed-Sphere exp (aim.5l_cs):
1914      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1915    o update AIM Equatorial Channel exp:
1916      use standard aim_v23 pkg and change the SST fields to be more realistic.
1917    o globalFile now works with exch2
1918    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1919      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1920    o limit timeave output for hi-res integrations
1921    
1922    checkpoint52i_post
1923    o removed CPP_EEOPTIONS.h from verification/*/code
1924    o updated the tiling for global_ocean_pressure
1925    checkpoint52i_pre
1926    
1927    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1928      the old pkg/aim).
1929    
1930    checkpoint52h_pre
1931    o shortened offending lines in exch2_send_rx?.template
1932    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1933    o genmake2: add build & execute test for NetCDF code
1934    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1935      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1936    o added useSingleCPUIO flag to monitor.F and mon_out.F
1937    o added temporary hack for sea-ice dynamics on the cube:
1938      metric terms are ignored and it is assumed that
1939      there is no sea-ice on cube faces 1, 2, 4, and 5.
1940    
1941    checkpoint52f_post
1942    o added exch2 cube routines to pkg/exch2
1943    o modified hs94.cs-32x32x5 to use it
1944    o added new grid files to hs94.cs-32x32x5
1945    checkpoint52f_pre
1946    
1947    checkpoint52e_post
1948    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1949      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1950    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1951      to work with implicit vertical advection and AB ;
1952    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1953    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1954     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1955    checkpoint52e_pre
1956    
1957    o fix bug in impldiff when Nr=1 or Nr=2.
1958    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1959    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1960    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1961      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1962    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1963    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1964    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1965    
1966    checkpoint52d_post
1967    o re-tiled many expts to allow comparison in multi-processor mode
1968      - updated output accordingly
1969      - changed hs94.128x64x5 to use intial T from file rather than use the
1970        random number generator
1971    o add infrastructure in model routines for fizhi and gridalt packages
1972    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1973    o changes to permit hi-res, cubed-sphere, configuration
1974      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1975      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1976      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1977        of surface winds for the cube
1978      (A verification experiment, based on global_ocean.cs32x15, but with
1979       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1980       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1981       complete with example surface forcing files and matlab scripts to look
1982       at the output and compare it with that of global_ocean.cs32x15.)
1983    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1984       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1985       to conform to the common rule.
1986    o check-in the first version of the coupler + interfaces for multi-components
1987       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1988       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1989       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1990       - ocean and atmos. share the same horizontal grid (no interpolation).
1991       - exchanges between component and coupler is done in forward_step
1992    o new verification experiment, cpl_aim+ocn:
1993       coupled ocean - AIM atmosphere on cs32 grid.
1994    
1995    checkpoint52d_pre
1996    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1997    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1998    
1999    checkpoint52c_post
2000    o Fixing OPTIONS files for use of exf:
2001      - ALLOW_ECCO not needed
2002      - ECCO_CPPOPTIONS.h should not be included from
2003        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2004        as has been the case in the past
2005      - All cal/exf related options are currently set in
2006        single header file. Should remain so until we
2007        agree on a consistent new policy.
2008    o Removed all CPP options for cal package.
2009      cal has no more CPP options.
2010    o modified STOREs in GAD_ADVECTION
2011    o corrected key comp. for passkey
2012    
2013    checkpoint52b_post
2014    o new version: "thsice" of thermodynamic sea-ice pkg:
2015     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2016     - modify fluxes but do not change theta directly;
2017     - light cleaning of bulk_force pkg (still needed with thsice).
2018     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2019       + output_thsice.txt to test thsice & bulk_force pkgs.
2020    o put back grid & coriolis monitor output.
2021    checkpoint52b_pre
2022    
2023    o call "do_the_model_io" at the beginning (=> dump initial state)
2024    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2025    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2026      (need info on NUMBER_OF_PTRACERS)
2027    o missing PTRACERS headers in some routines
2028    o default tamc.h in pkg/autodiff supposed to crash
2029      to ensure proper customization
2030    
2031    checkpoint52a_post
2032    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2033      - moved surfaceTendencyTice from pkg/seaice to main code
2034      - subroutine FREEZE_SURFACE now limits only surface temperature
2035        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2036        => new output.txt for global_ocean.cs32x15 & global_with_exf
2037      - keep the old version of FREEZE for backward compatibility;
2038        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2039      - corresponding modifs for TAF directives
2040    o added surface flux output variables to TIMEAVE_STATVARS
2041    o time-averaged output for pkg/ptracers
2042    o fix problem with ECCO-related divided adjoint
2043      snapshot file was missing some ad-variables,
2044      but no warning issued by TAF
2045    
2046    checkpoint52a_pre
2047    o some bug fixes for #undef REAL4_IS_SLOW
2048    
2049    checkpoint52 = ecco_c52_e35
2050    o after testing adjoints of checkpoint51u_post
2051    
2052    checkpoint51u_post
2053    o this is the post-merge tag of the ecco-branch
2054      (needs another clean checkout and re-testing)
2055    o various natl_box_adjoint configs and results
2056      but no input fields
2057    o obcs adjoint not yet merged!
2058    o adding ECCO global 1x1 and 2x2 degree configs
2059    o updated/extended some store directives for seaice
2060    o pkg/ecco now containes ecco-specific part of cost function
2061    o top level routines the_main_loop, forward_step
2062      supersede those in model/src/
2063      previous input data.cost now in data.ecco
2064      (new namelist ecco_cost_nml)
2065    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2066    
2067    checkpoint51t_post
2068    o this is the pre-merge tag of the ecco-branch
2069    
2070    checkpoint51s_post
2071    o cleanup: removed various obsolete #define-s
2072    o pkg/grdchk
2073      - renamed 'ph-grd 3' to 'grad-res'
2074      - merged from ecco-branch
2075        (remaining bug fixes for obcs gradient checks)
2076      - additional high-precision output for testreport
2077        (grep for 'precision_grdchk_result')
2078    
2079    checkpoint51r_post
2080    o cleaned up or removed CPP_OPTIONS.h files
2081    o updated results for some of the tests to reflect the new
2082      optfiles (-ieee: -O0 instead of -O3)
2083    
2084    checkpoint51q_post
2085    o cd_code:
2086      - moved cd_scheme.F -> cd_code_scheme.F
2087      - separate read_checkpoint from cd_code_ini_vars.F
2088      - separated cd_code part from write_checkpoint
2089      - updated AD_SOURCE, generated .flow
2090      - added CD_CODE_VARS.h to the_main_loop
2091      - Moving cd_code specific store dir.s to pkg/cd_code
2092    o ctrl package totally restructured
2093      - pack/unpack now optional and decoupled from
2094        xx_/adxx_ I/O
2095      - ctrl_pack/unpack cleaned
2096        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2097      - confined inclusion of AD_CONFIG.h to where necessary.
2098    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2099    
2100    checkpoint51p_post
2101    o create initial cd_code package
2102      - WARNING: the initialization of fields within packages
2103        is broken because INI_FIELDS (where READ_CHECKPOINT is
2104        called) is called *before* PACKAGES_INIT_VARIABLES.
2105        This seems to be backwards since
2106        1) its important to initially zero the entire field including
2107           the "halo" region
2108        2) zeroing needs to be done *before* reading pickup info
2109           and the pickup call might or might not happen in any
2110           particular run
2111      - this needs an overhaul for R2
2112    o cleanup verification/*/code/GMREDI_OPTIONS.h
2113    o cleanup testreport
2114    
2115    checkpoint51o_post
2116    o bringing AD-related verif's up to date with genmake2
2117      - carbon/
2118      - global_ocean.90x40x15/
2119      - hs.94.1x64x5/
2120      - (front_relax/ )
2121    o (more) consistent directory structure for AD-related verif.'s
2122    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2123    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2124    o bug fix in find_alpha.F for MDJWF:
2125      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2126        change rho -> rho-rhoConst
2127      - replace call find_rho to find_rhonum
2128    o initialisation of rFlx extended to full array (required by TAF)
2129      and shifted to thermodynamics
2130    o removed PTRACERS.h in ptracers routine
2131    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2132    o Correcting initialisations for fVerU, fVerV.
2133    o helping TAF to recognize dependency on kUp for
2134      fVerU, fVerV
2135    o Replacing delZ by delR in pkg/ctrl/
2136    checkpoint51o_pre
2137    
2138    o undid all of cp51 pending some cleanups and discussion
2139    o added the [#include "AD_CONFIG.h"] statement to all files that need
2140       it for adjoint/tl #defines
2141     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2142     o removed tools/genmake since it no longer works
2143    
2144    checkpoint51n_post
2145    o modifications to make FREEZE flux visible to pkg/kpp
2146      - moved surfaceTendencyTice from pkg/seaice to main code
2147      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2148      - subroutine FREEZE now limits only surface temperature
2149        (this means new output.txt for global_ocean.90x40x15,
2150         global_ocean.cs32x15, and global_with_exf)
2151    o added surface flux output variables to TIMEAVE_STATVARS
2152    
2153    checkpoint51n_pre
2154    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2155    o added [#include "AD_CONFIG.h"] to all files that use the following
2156      defines:
2157      - ALLOW_ADJOINT_RUN
2158      - ALLOW_TANGENTLINEAR_RUN
2159      - ALLOW_ECCO_OPTIMIZATION
2160    
2161    checkpoint51m_post
2162    o incorporating changes to get TAMC/TAF working in genmake2
2163      - added new TAMC/TAF targets to the Makefile
2164      - various cleanups related to package handling
2165      - these changes should have no impact on the forward model
2166    
2167    checkpoint51l_post
2168    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2169     - faster algorithm for cal_addtime.F
2170     - higher precision arithmetic, where needed
2171     - pkg/exf *startdate variables changed from calendar date to
2172       model integration time
2173    
2174    checkpoint51l_pre
2175    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2176    o enable to apply restoring on S & T only in a latitude band.
2177    o update output (external_forcing_surf modif. change truncation errors)
2178       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2179    
2180    checkpoint51k_post
2181    o change default to: useNHMTerms=.FALSE.
2182     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2183       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2184     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2185        exp1, ideal_2D_oce
2186     - change data file of oceanic exp (leave the results unchanged for now)
2187       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2188    o set gravitySign automatically according to the vertical coordinate used
2189      (and change sign: back to "logical" value: +1 when R increases downward)
2190    o added an include barrier to the default CPP_OPTIONS.h and
2191      removed the #include "PACKAGES_CONFIG.h" from it
2192    o fix a bug in mom_fluxform (from chk51j_post)
2193    
2194    checkpoint51j_post
2195    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2196    o adjusted some flow directives (dynamics, thermodynamics)
2197    o added cubed-sphere case to test cost function
2198    o heckpoint_lev?_directives.h now include
2199      pkg-specific directives, whenever those are enabled.
2200    o Moving pkg-specific flow directives to corresponding pkg
2201      Moving pkg-specific differentiation list to corresponding pkg
2202      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2203      ---> conventions are
2204           - pkg_ad.flow
2205           - pkg_ad_diff.list
2206           - pkg_ad_check_lev?_dir.h
2207    
2208    checkpoint51i_post
2209    o merge of the branch-genmake2
2210      - knowingly breaks the older genmake
2211      - automatic generation of all ALLOW_${PKG_NAME} defines
2212      - new testreport supersedes older testscript
2213    o large number of package inclusion and header cleanups
2214    checkpoint51i_pre
2215    
2216    o new output for adjoin of global ocean vector invariant
2217    o fix for checkpoint of thermodynamic seaice and bulk_force
2218    o Steph gchem various cleanups
2219    
2220    checkpoint 51h_pre
2221    o fixed some single quotes
2222    o modify gchem pkg to be more versatile
2223    o modifications to clean up dic pkg
2224    o add pkg/cfc
2225    
2226    checkpoint51g_post
2227    o provide links for ARPACK and ADM*TLM
2228    o start removing verification/vero/
2229    o update AD-related stuff
2230      (in particular some IF-statements in model/src/ routines)
2231    o adding to verification/global_ocean.90x40x15/ adjoint of
2232      vector invariant setup
2233    
2234    checkpoint51f_post
2235    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2236    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2237      of tracer Green's fucntions for ocean inversion project.
2238    
2239    checkpoint51f_pre
2240    o Added on-the-fly spatial interpolation capability
2241        "USE_EXF_INTERPOLATION" to pkg/exf.
2242      - This is a temporary Cartesian-grid hack until
2243        the super-duper ESMF coupler becomes available.
2244      - See verification/global_with_exf/README for usage example.
2245      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2246        flags and modified pkg/seaice accordingly.
2247    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2248        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2249        non-local transport term.
2250    
2251    checkpoint51e_post
2252    o pkg/mom_vecinv:
2253      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2254      - add time-ave diagnostic of vorticity advection.
2255    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2256    o atmospheric geopotential: - include water vapor effect;
2257                                - use p^kappa in p* scaling.
2258    o land pkg: read initial state from files.
2259    o AIM : add stratospheric drag in the upper level
2260    
2261    checkpoint51d_post
2262    o change function ILNBLNK (=> last non-blank char.) to return zero
2263      (instead of the string length) when the string. char is empty
2264    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2265    o modif's to restore TAMC compatibility
2266      - avoid "_d" constructs in PARAMETER declarations
2267      - avoid interrupting lines by comment lines
2268    o Use cluster local disks for purely local I/O
2269      vs. globally visible disks needed for ctrl stuff
2270      (merged from ecco-branch)
2271      - new active_file_loc... and mdsio_..._loc routines
2272      - affected packages: autodiff, ctrl, grdchk, mdsio
2273    
2274    checkpoint51c_post
2275    o introducing integer flag debugLevel
2276      - debLevZero: suppress all output
2277      - debLevA: standard
2278      - debLevB: equivalent to current debugMode=.TRUE.
2279    o introducing pathname variable mdsioLocalDir for mdsio
2280      that can be specified at runtime
2281      (relevant for cluster I/O to local disk)
2282    `
2283    >>>checkpoint51b_post
2284    adjoint of ptracers
2285    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2286    o extended state in checkpoint_lev?, etc.
2287    o alternative ctrl/cost with tr1 or ptracer
2288    o new comlev1_bibj_ptracers
2289    o new ptracers.flow
2290    o made ptracers_forcing same as external_forcing_s
2291    o added verification for adjoint with ptracers
2292      - adm. grdchk fail so far
2293      - tlm. grdchk OK
2294      - checked tapelev/comlev recomputations: OK
2295    <<<checkpoint51b_pre
2296    
2297    checkpoint51a_post
2298    o added code for biogeochemistry package
2299      - new pkgs: dic, gchem
2300      - new subroutine in ptracers
2301    o modify code for biogeo packages
2302      - in model/src and pkg/ptracers
2303    
2304    checkpoint51
2305    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2306      - autodiff, ctrl, exf, grdchk, seaice
2307      kept separate packages
2308      - cost, ecco, obcs
2309    o updating verification/internal_wave, verification/lab_sea
2310      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2311    
2312    checkpoint50i_post
2313    o Preparing next differentiable checkpoint and sync
2314      of MAIN vs. ecco-branch
2315      - 1st step: this one is differentiable
2316      - 2nd step: next(! not this) checkpoint will have updated packages
2317                  from ecco-branch)
2318    
2319    checkpoint50h_post
2320    o new package "land": provide surface BC for AIM.
2321    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2322    o AIM: use true log-P extrapolation for near surface temp (= as in
2323        F.Molteni paper) ; update aim.5l_cs output.
2324    o New variable in PARM03 for more flexible pickups
2325    o somewhat cleaned package initialisation sequence for
2326      ctrl/ cost/ ecco/ in packages_... routines
2327    
2328    checkpoint50g_post
2329    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2330      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2331      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2332        made the default because of faster convergence than ADI
2333    
2334    checkpoint50f_post
2335    o exf totally restructured
2336      - replaced all exf_set_ routines by one generic exf_set_gen.F
2337        and made sure it's still differentiable
2338      - split exf_getffields.F into new exf_bulkformulae.F
2339      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2340      - updated adjoint/makefile and relevant verif. accordingly
2341    
2342    checkpoint50f_pre
2343     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2344          + change Evap over land. (update aim.5l_cs output)
2345     o added missing .cvsignores and made uniform across expts
2346     o changed configuration of tidal_basin_2d expt
2347     o added pkg/debug functions for tracing code in fatal crashes
2348     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2349     o new fn in pkg/monitor to stop model if solution grows too big
2350     o removed lots of single quotes from comments
2351    
2352    checkpoint50e_post
2353    o make KPP work with PTRACERS
2354     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2355       nearly a copy of kpp_transport_s
2356     - there is no analogue to SurfaceTendencyS, so I have to use
2357       gPtr(of the surface layer) instead
2358    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2359    checkpoint50e_pre
2360    
2361    checkpoint50d_post
2362    o change kpp output from multiple-record state files to single-record state
2363      files analogous to write_state.F
2364    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2365      analogous to the cg2d-related output.
2366    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2367      so that writing to internal file fn (with length 512) fails.
2368    checkpoint50d_pre
2369    
2370    checkpoint50c_post
2371    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2372    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2373    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2374    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2375    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2376    
2377    checkpoint50c_pre
2378    Merging from release1_p13:
2379    o bug fix for pkg/seaice dynamic solver
2380    o Added SEAICE_initialHEFF to pkg/seaice
2381    
2382    checkpoint50b_post
2383    o store u*,v* in gU,V instead of in guNm1,gvNm1
2384    o in order to put the momForcing out of the Adams-Bashforth:
2385      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2386      to timestep.F
2387    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2388    o re-generate output for highly sensitive test-exp:
2389       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2390    
2391    checkpoint50b_pre
2392    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2393    o corrected CPP option mismatch in exf_Bulk... functions for case
2394      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2395    
2396    checkpoint50a_post
2397    o Bug fix for merging between c50 and KPP.
2398      ikey was passed from thermodynamics to kpp_calc via
2399      common block rather than being recomputed in kpp_calc,
2400      in contradiction with new key itdkey.
2401      New key ikppkey created, and tamc.h headers updated.
2402    
2403    checkpoint50
2404    - 2nd step of merge with ecco-branch:
2405      merge changes in ecco-branch back into main trunk
2406    - bug fix in find_alpha
2407    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2408    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2409    - merged some sliced AD support routines
2410    
2411    checkpoint49
2412    merged from ecco-branch:
2413    o exf:
2414      - Enable initialisation of forcing fields to constant
2415        (runtime) values.
2416      - in exf_getffields.F
2417        Reduce i-/j-loop to interior domain, discarding overlaps.
2418        That also fixes wrong TAF-key computations for key_1, key_2
2419        with bulf formulae.
2420      - exf_init.F modify #ifdef for exf_init_evap
2421      - exf_getffieldrec.F, ctrl_getrec.F
2422        The following INT-usages are not safe:
2423          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2424          fldcount = int(fldsecs/fldperiod) + 1
2425        and were modified.
2426    o autodiff: checkpoint_lev...
2427      - updated storing for bulk formulae (some arrays were missing)
2428      - added state for seaice package
2429      - synchronized with main branch
2430    o DIVA:
2431      Modif.s in
2432      - the_main_loop.F
2433      - the_model_main.F
2434      and added cost_final_restore.F cost_final_store.F
2435      o With these changes, it is possible to fully separate
2436        the first forward run to compute the cost function (mdthe_main_loop)
2437        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2438        into separate model executions.
2439        This enables better tuning of DIVA to given queue sizes.
2440      o Loss of cost function value in consecutive DIVA runs is
2441        fixed by storing to 'costfinal' file.
2442      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2443        beginning/end of adjoint integration is accounted for.
2444      The current changes apply to TAF-1.4.26.
2445      TAF has one remaining bug, requiring one manual change
2446      (see MITgcm manual).
2447    o cal: synchronized between MAIN and ecco-branch
2448    
2449    checkpoint48i_post
2450    o Changes to restore differentiability of code w.r.t. previous tag
2451      (mostly adding new routines to make list and replacing
2452      pressure by totPhiHyd).
2453    o Updated and merged grdchk package
2454      - has both ADM and TLM checks
2455      - works for single- and multi-proc.
2456      - output cleaned
2457      - worked successfully for parallel DIVA
2458    o genmake:
2459      - Adding -platform=SP4
2460      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2461    o Modif. for DIVA:
2462      ctrl_unpack should not be called in intermediate DIVA interval.
2463      (similar thing would apply for active files such as
2464      tbar, sbar, psbar, which should not be reinitialised;
2465      only relevant for ecco-branch)
2466    
2467    checkpoint48h_post
2468    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2469    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2470    o Added SEAICE_initialHEFF to pkg/seaice
2471    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2472    
2473    checkpoint48g_post
2474    --- EOS:
2475    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2476      store total Potential in totPhyHyd for diagnostics & EOS.
2477    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2478    --- Pressure/geopotential gradient:
2479    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2480    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2481      ( changes results of global_ocean_pressure )
2482    o NLFS + z-coord.: add eta*Rho' contribution.
2483    o accurate phiHyd when using interface-W at the middle between 2 centers
2484     ( changes results of ideal_2D_oce )
2485    o includes r* 2nd term in potential gradient.
2486    
2487    checkpoint48f_post
2488    Merging from release1_p12:
2489    o Modifications for using pkg/exf with pkg/seaice
2490      - improved description of the various forcing configurations
2491      - added basic radiation bulk formulae to pkg/exf
2492      - units/sign fix for evap computation in exf_getffields.F
2493      - updated verification/global_with_exf/results/output.txt
2494    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2495      (SBO) core products, including oceanic mass, center-of-mass,
2496      angular, and bottom pressure (see pkg/sbo/README.sbo).
2497    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2498      to avoid negative values in shallow regions.
2499      - updated verification/natl_box/results/output.txt
2500      - updated verification/lab_sea/results/output.txt
2501    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2502    o Added useSingleCpuIO option (see PARAMS.h).
2503    o Updated useSingleCpuIO option in mdsio_writefield.F to
2504      work with multi-field files, e.g., for single-file pickup.
2505    o pkg/seaice:
2506      - bug fix in growth.F: QNET for no shortwave case
2507      - added HeffFile for specifying initial sea-ice thickness
2508      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2509    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2510      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2511    o pkg/seaice:
2512      - adjoint-friendly modifications
2513      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2514    
2515    checkpoint48e_post
2516    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2517    o dynamics: change definition of computational domain & adapt mom_fluxform
2518      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2519    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2520        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2521        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2522        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2523        inverted_barometer solid-body.cs-32x32x1
2524      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2525    
2526    checkpoint48d_post
2527    o in preparation for r*:
2528     a) use pre-computed gradient of hydrostatic potential:
2529        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2530     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2531        => affects results of glob_oce_pressure (different truncation error)  
2532      update output.txt of ideal_2D_oce & global_ocean_pressure
2533    
2534    checkpoint48d_pre
2535    o in preparation for r*:
2536      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2537      pass the 2 comp. of the grad. as arguments to momentum S/R.
2538      but for the moment, only used if it does not change the results.
2539    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2540    
2541    checkpoint48c_post
2542    Modifications in treatment of initial flux forcing controls
2543    to avoid extra storing of flux fields.
2544    
2545    checkpoint48c_pre
2546    o Added tidal_basin_2d experiment (currently 1D!)
2547    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2548    
2549    checkpoint48b_post
2550    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2551     (modification to pressure gradient not yet implemented)
2552    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2553      (for U & V) that are used for vertical advection of momentum.
2554    
2555    checkpoint48a_post
2556    o In preparation for r*, use temp. array to compute vertical transport
2557       in flux-form momentum pkg. => change results of few test-exp.
2558      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2559                        lab_sea, natl_box & plume_on_slope
2560    
2561    checkpoint48
2562    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2563    
2564    checkpoint47j_post
2565    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2566    o moved adexch from forward_step to addummy_in_stepping
2567    o added exch in ctrl_map_...
2568    o aveFreq.=0. at end of cost_final to avoid overwrite in
2569      reverse checkpointing loop
2570    o Yet more changes in gmredi:
2571      * adgmredi_calc_tensor
2572        avoiding all recomputation of gmredi_slope_limit
2573      * adgmredi_x/y/rtransport
2574        added flag for excessive storing to avoid recomp. of
2575        u/v/rtans, dTdx/y/z
2576        -> this is not really necessary and very memory-consuming
2577      * adgmredi_slope_psi:
2578        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2579      * gmredi_slope_limit
2580        re-activated full calculation of taperfct for case 'ac02'
2581    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2582    
2583    checkpoint47i_post
2584    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2585    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2586      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2587    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2588    o gmredi: fix few bugs.
2589    
2590    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2591    This will be a good checkpoint to plug into the ecco-branch.
2592    o few modif.'s to get latest version adjointed
2593      (mainly kick out code in ini_linear_phisurf)
2594    o modif's to run adjoint with exactConserv
2595    o case GM_BOLUS_ADVEC should be cleaned
2596      S/R gmredi_slope_psi should be cleaned
2597    o verification/carbon now has exactConserv=.TRUE.
2598    
2599    checkpoint47g_post
2600    o time-average AIM output: becomes independent from statvars time-average
2601      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2602    o After TAF bug fix:
2603      Tested adjoint of gmredi package.
2604      Tests were done with checkpoint47 rather than with latest
2605      checkpoint47f_post since the latter is broken for the adjoint
2606      verification/carbon/ contains both ADM and TLM gradient checks.
2607    Here they are, before they get changed/lost/stolen.
2608    Mostly modif.'s to fix numerical sensitivities.
2609    Gradient checks OK for
2610    - GM_taper_scheme:
2611      * clipping
2612      * ac02
2613      * linear
2614      * glw91
2615      * dm95
2616      * ldd97
2617    - GMREDI_OPTIONS:
2618      * GM_VISBECK_VARIABLE_K
2619      * GM_NON_UNITY_DIAGONAL
2620      * GM_EXTRA_DIAGONAL
2621      * GM_BOLUS_ADVEC
2622    in conjunction with data.gmredi parameters to be checked in
2623    in a few minutes under verification/carbon/code/
2624    
2625    checkpoint47f_post
2626    Merging from release1_p10:
2627    o modifications for using pkg/exf with pkg/seaice
2628      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2629        and SEAICE_EXTERNAL_FLUXES
2630      - pkg/exf CPP options EXF_READ_EVAP and
2631        EXF_NO_BULK_COMPUTATIONS
2632      - usage examples are Experiments 8 and 9 in
2633        verification/lab_sea/README
2634      - verification/lab_sea default experiment now uses
2635        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2636    
2637    checkpoint47e_post
2638    o created a tag prior to creating a branch
2639    
2640    checkpoint47d_post
2641    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2642      at the bottom boundary had an erroneous half slip boundary condition
2643    o added bottom drag and no slip boundary condition capabilities to
2644      oceanic pressure coordinates code
2645    o added new verification experiment global_ocean_pressure, this experiment is
2646      also described in the tutorial section of the manual
2647    checkpoint47d_pre
2648    
2649    checkpoint47c_post
2650    o Added a verification experiment for a global cubed-sphere ocean run
2651      -  verification/global_ocean.cubed32x32x30
2652      -  uses pkg/therm_seaice and pkg/bulk_forcing
2653    
2654    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2655    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2656      when using P-coordinate; only implemented for atmospheric config.
2657    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2658      NOTES: requires option NONLIN_FRSURF to be "#define".
2659    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2660    
2661    checkpoint47b_post
2662    Merging from release1_p9:
2663    o pkg/seaice
2664      - removed GOTO's and added taf directives
2665      - double precision constants to reduce the g77 (Linux)
2666        to F77 (SGI) differences reported in release1_p8
2667    o tools/genmake
2668      - added SGI options
2669    o verification/testscript
2670      - updated to that of checkpoint47a_post
2671    o verification/global_ocean.90x40x15/input/eedata
2672      - modified for SGI f77 compatibility
2673    o verification/lab_sea
2674      - added description of sea-ice model
2675      - added missing matlab routines
2676      - added test of thermodynamics parallelization
2677    
2678    checkpoint47a_post
2679    o new pkg: aim_v23
2680     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2681       for now, keep the same surface forcing as before.
2682     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2683     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2684     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2685    o add diagnostic of surface correction term in monitor output
2686    
2687    o bulk_force and therm_seaice
2688    - Two packages:  bulk_force (Bulk forcing)
2689      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2690    - Earlier integration from Stephaine Dutkiewicz
2691      and Patrick Heimbach.
2692    - Two ifdef statements for compile time,
2693       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2694    
2695    checkpoint47
2696    differentiable version of checkpoint46n_post
2697    o bug fix in quasihydrostaticterms
2698    o * "clean" adjoint code (in terms of extensive recomputations)
2699        can now be obtained for all GMREDI options (i.e. for
2700        - GM_VISBECK_VARIABLE_K
2701        - GM_NON_UNITY_DIAGONAL
2702        - GM_EXTRA_DIAGONAL
2703        - GM_BOLUS_ADVEC )
2704      * However, wrong gradient check problem remains unsolved.
2705      * New CPP options have been introduced for different
2706        tapering schemes
2707    o external_fields_load now part of differentiation list
2708    o pressure needs multiple storing;
2709      would be nice to have store_pressure at beginning or
2710      end of forward_step, e.g. by having phiHyd global (5-dim.)
2711      (NB: pressure is needed for certain cases in find_rho,
2712      which is also invoked through convective_adjustment).
2713    o recomputations in find_rho for cases
2714     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2715    o #define ATMOSPHERIC_LOADING should be differentiable
2716    o ini_forcing shifted to begining of initialise_varia
2717    o Incorporating QNVS line search routines into MITgcm
2718      (this is separate code, and therefore not under pkg)
2719      lsopt/, optim/
2720    o Updated verification/carbon/
2721      - #define GM_VISBECK_VARIABLE_K
2722      - GM_taper_scheme    = 'ldd97'    
2723    
2724    checkpoint46n_post
2725    Merging from release1_p8:
2726    o verification/natl_box:
2727      updating new external_fields_load routine
2728    o New package: pkg/seaice
2729      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2730      The sea-ice code is based on Hibler (1979-1980).
2731      Two sea-ice dynamic solvers, ADI and LSR, are included.
2732      In addition to computing prognostic sea-ice variables and diagnosing
2733      the forcing/external data fields that drive the ocean model,
2734      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2735      The implied surface heat flux is then stored in variable
2736      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2737      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2738      non-local transport term.  Because this call precedes model
2739      thermodynamics, temperature under sea-ice may not be "exactly" at
2740      the freezing point by the time theta is dumped or time-averaged.
2741      N.B.: fairly large differences in accuracy occur across
2742            different platforms/compilers; comparison between
2743            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2744            generated output gives:
2745       T           S           U           V
2746      C D M    c        m  s        m  s        m  s        m  s
2747      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2748      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2749      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2750    
2751      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2752    o GAD:
2753      - generated new common blocks to account for call of
2754        same gad routines with differing traceridentities
2755        (needed to modify tracerIdentity indices in GAD.h)
2756      - generated separate common blocks for case useCubedSphereExchange
2757        (Department of Futurology)
2758      - parameter lists to gmredi_?transport: added tracerIdentity
2759      - added new key indices to tamc.h
2760    o external_fields_load:
2761      - added this routine to TAF list
2762      - needed to make some common blocks global and additional storing
2763        along the same lines as exf package (checkpoint_lev?_directives.h)
2764    o exf:
2765      updated external forcing package
2766      - bug fixes carried over from ecco-branch
2767        (missing OBCS_OPTIONS.h in two routines)
2768      - enable easy to use "no forcing".
2769      - added exf I/O for atmospheric loading
2770      - added exf I/O for runoff data
2771      - transfered scaling between exf <-> MITgcm to exf namelist
2772    o Adding new verification experiment global_with_exf.
2773      This verification experiment is almost identical to the
2774      global_ocean.90x40x15 experiment, except that it uses
2775      the exf (and cal) package instead of the
2776      external_fields_load routine (cf README file).
2777    
2778    checkpoint46m_post
2779    o modified testscript to return -- when there are no lines of "%MON" output
2780    o added new flag "quasiHydrostatic" for QH mode
2781      and new routine quasihydrostaticterms()
2782    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2783      New routine: mom_u_coriolis_nh()
2784    o fixed sign of non-hydrostatic metric terms in u and v equations.
2785      Depend on correct sign of gravitySign.
2786    o added work.pc* to .cvsignore in aim directories using ifc
2787  o introduced flag for controllin non-hydrostatic metric terms  o introduced flag for controllin non-hydrostatic metric terms
2788  o removed gravitySign from PARM04  o removed gravitySign from PARM04
2789  o switched to g77/ifc from pgf77 in aim experiments  o switched to g77/ifc from pgf77 in aim experiments

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