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revision 1.76 by jmc, Fri Jul 12 14:52:08 2002 UTC revision 1.831 by mlosch, Tue Jun 5 16:01:45 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/seaice:
8     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
9     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
10       It is turned off by default (=-1.), because it changes the results.
11     - make it possible to read AREA from a file, too.
12    
13    checkpoint59c
14    o add S/R and diagnostics for oceanic mixed-layer depth
15    o move GMRedi call after all vertical mixing schemes (including KPP)
16    o pkg/thsice:
17     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
18      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
19    o pkg/obcs:
20     - bug fix for balance code
21    o pkg/seaice:
22      - allow values of SEAICE_elasticParm > 1
23      - add new parameter SEAICE_evpTauRelax as an alternative
24        to SEAICE_elasticParm
25      - make lsr boundary conditions free slip (by default), changes result
26      - add code for no slip boundary conditions for lsr
27      - set minimum of zeta to zero (and not 4e8) (changes results)
28      - add a cap on AREA after advecting AREA if seaice_growth is not called
29    o change calculation of Visbeck K:
30      - no longer depend on tapering scheme; instead, compute slope (limited
31        by GM_maxSlope). this is equivalent to what was comuted before with
32        clipping or linear tappering.
33      - fix vertical averaging (wrong by 1/2 level)
34      - leave the old version (but will not be maintained) within
35        #ifdef OLD_VISBECK_CALC / #endif
36      - update output of exp. ideal_2D_oce
37    o change error catch in calc_r_star to improve vectorization
38    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
39      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
40    o adjoint:
41      Re-organized adjoint checkpointing according to Matt Mazloff
42      (but with modifs/completions/cleanups)
43      Storing is now bundled into large arrays to optimized I/O
44      (and second step in cleanup of the_main_loop)
45    
46    checkpoint59b
47    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
48      - export/import (between ocean & coupler) fields needed for ocean DIC.
49    o pkg/seaice:
50      - get rid of three more exchanges seaice_calc_viscosities (required
51        different loop boundaries in seaice_lsr and seaice_ocean_stress)
52      - bug fix in seaice_ocean_stress (update of lab_sea required)
53      - reduce loop boundaries to necessary minimum also in seaice_evp
54      - go back to the old way of computing deltaC/Z as the adjoint likes that
55        better
56    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
57      passive tracer to an Age Tracer) + update output.txt
58    o pkg/exf:
59      - implement A-grid / C-grid selection for wind-stress input files.
60      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
61      for now, in exf_bulk_largeyeager04.F only :
62      - change implementation for case where windspeed + 2. components wind-stress
63        are read-in. AND use rhoConstFresh to convert evap.
64    o pkg/seaice:
65      - use correct EXCH_UV for wind-forcing (on A-grid).
66      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
67        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
68    o pkg/exf:
69      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
70      EXF_INTERPOLATION:
71      - merge global_with_exf/code version of exf_interp_read.F
72        to the main code ;
73      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
74        reading the file ; Important: This options needs to be defined to recover
75        previous code.
76        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
77      - no longer loose real*8 precision along the way when using exf_iprec=64.
78    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
79      - change discretisation of evp-solver in order to avoid another exchange
80        (changes lab_sea) and clean up a little
81      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
82        help the adjoint (this also changes the results slightly)
83      - add a few "_d 0" where they had been missing in seaice_evp.F
84      - cleaning up: remove unused seaice_calc_rhs.F
85    o pkg/exf: some cleaning-up:
86      - change various "constants" into runtime parameters
87      - cleaned-up Large&Yeager04 routine which should eventually
88        replace exf_bulkformulae.F (changed names of S/R and CPP)
89        and merged various ALLOW_ATM_WIND options
90     only used with thsice pkg (in thsice_get_exf.F):
91      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
92        which are used when useStabilityFct_overIce=TRUE (= the default)
93      - change default values of ice & snow emissivity and scale downward LW
94        by ice & snow emissivity.
95    o pkg/thsice:
96     fix few little problems, in thsice_calc_thickn.F:
97      - growth vertically (and not laterally) if iceFrac == iceMaskMax
98      - melt only laterally if hIce < hThinIce (as the comments say)
99      and in thsice_extend.F:
100      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
101      - start to form ice as soon as the minimum ice-volume is reachable.
102     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
103      and cpl_aim+ocn
104    o pkg/kpp
105     - move computation of surface related input fields to KPP into a new
106       subroutine kpp_forcing_surf.F
107     - remove wrong (within bi,bj loops) EXCH calls.
108     - little cleaning (add argument myThid in last position, cvs header ...)
109     - for now, fix conservation problem by exchanging KPPviscAz (may not
110       be the best fix)
111    o pkg/seaice
112     - check for inconsistent evp parameter/cpp-flag combination
113     - remove leftover errIO flat for obsolete name list error handling
114    o OpenAD
115     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
116    
117    checkpoint59a
118    o pkg/seaice: some parameter clarifications and a little bit of clean up
119    o pkg/thsice: rename run-time parameters:
120       himin       -> hIceMin
121       himin0      -> hThinIce
122       hihig       -> hThickIce
123       i0          -> i0swFrac
124       transCoef   -> bMeltCoef
125       frac_energy -> fracMelting
126      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
127       with default values (for now) that do not change the results.
128      remove old version of thsice vars advection in pkg/seaice.
129    o in FFIELDS.h:
130      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
131      - make pLoad & sIceLoad always available (but still only used if
132         ATMOSPHERIC_LOADING is #define).
133    o pkg/kpp: replaced _KPP_RL with _RL
134    o bug fixes for vertical diffusivity computations when both KPP and
135        3D diffusivity arrays are used.
136    o pkg/seaice: fix bug in evp solver, while doing that
137      - change (improve?) discretization of stress computations for both
138        cgrid-lsr and evp solver
139      - add a new routine to compute strain rates
140      - the above changes lab_sea results
141      - add no slip conditions for evp solver (off by default), lsr-version
142        may follow
143      - fix exchange for shear at Z-points (does not change lab_sea)
144      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
145        (to force the user to pick a time step since there is not "safe" way
146        of choosing it)
147      - add principal stress diagnostics
148      - rearrange fields for evp a little to avoid having to call a: too many
149        exchanges and b: exchanges for stress trensor components which we do
150        not have.
151      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
152        of evp, complete rewrite for lsr case (latter is does not yet work
153        in all cases)
154    o pkg/kpp: add code to have mixing in shelf ice caverns
155      - add myThid to all kpp routines (long overdue)
156    
157    checkpoint59
158    o pkg/exf:
159      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
160        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
161      - move exf header files from lower_case.h to UPPER_CASE.h ;
162        add missing cvs Header & Name
163      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
164      - add namelist param. selectStressGridPosition, exf_monFreq
165      - retire many _CLIM routines, and remove data.exf_clim
166        + params moved to data.exf
167        + climsst, climsss now handled by exf_set_gen, i.e.
168          climss?period=0 refers to constant field,
169          climss?period=-12 to monthly forcing
170      - split up namelists in data.exf
171    o pkg/seaice:
172      - remove seaice_exch and seaice_exch_uv
173      - remove superfluous exchange of theta
174      - add myThid to seaice_budget_ocean/ice
175      - add new interface for atmospheric wind forcing (C-grid only)
176        + new routine
177        + two new field (taux, tauy for stress over ice)
178        + removed one global field (DAIRN) for C-grid case only
179    o pkg/thsise
180      - 2nd set of modifs for thsice adjoint in conjunction with exf
181    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
182    
183    checkpoint58y_post
184    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
185      vertical diffusivity, similar to that in MOM4; turned on using
186      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
187      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
188    o Added capability for 3D specification of background vertical diffusion
189      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
190      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
191      "data" file that contains the 3D vertical diffusivity coefficients.
192    o ice dynamics (pkg/seaice) with thsice thermodynamics:
193      - add code within pkg thsice to advect & diffuse sea-ice fields
194      similar to (and will replace) what has been added in  seaice_advdiff.F,
195      but: - conserving Mass, Heat & Salt.
196           - better when using non-linear advection scheme (not yet fully tested)
197           - can also be used in atmospheric set-up (for now, only the diffusion).
198    
199    checkpoint58x_post
200    o IO option for global-file compact format:
201      - add options when generating topology (utils/exch2/matlab-topology-generator)
202      - add I/O capability (pkg/mdsio).
203      - adapt utils/matlab/rdmds.m to read this format.
204      for now long-line format not yet supported by pkg/mdsio (& exch2).
205    o shelfice: add a few diagnostics
206    
207    checkpoint58w_post
208    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
209      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
210      (and replace horiVertRatio in NH code).
211      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
212                         and tutorial_plume_on_slope (sensitive to truncation)
213    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
214      directly to drive seaice model (C-grid only)
215    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
216     - reintroduce computation of wind from stress,
217     - compute tau (in exf_bulkformulae.F) from windstress averaged to
218       mass points to avoid tau = 0
219     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
220    o rdmnc.m: make it work with "global" files created with gluemnc
221    o rdmnc.m : some improvements in dealing with singleton dimension
222      (tested on all testreport mnc output files).
223    o genmake2: disable pkg/profiles if netcdf test fails.
224    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
225    o move call to cal_readparms up to make calendar parameters/variable available
226      to all packages
227    
228    checkpoint58v_post
229    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
230      useDynP_inEos_Zc tested.
231    o pkg/exf: changes to properly interpolate/mask/scale initial fields
232    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
233      and portions thereof.  See read_cs.txt for description and examples.
234    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
235      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
236      following the great-circle arc between those 2 points.
237    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
238      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
239    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
240     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
241     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
242     - still needs work (not working with some options ; efficiency to improve)
243       and serious testing.
244     - use this scheme for temperature & salinity in 2 advection test exp.:
245       advect_xy & advect_xz, respectively.
246    
247    checkpoint58u_post
248    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
249    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
250    o testreport: add option "-skipdir" to skip some test.
251    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
252      momentum calculation.
253    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
254    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
255      remove checkpoint.F and the_correction_step.F (no longer used);
256      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
257    o add option (linFSConserveTr) to correct for tracer source/sink due to
258      Linear Free surface
259    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
260    o pkg/thsice: fix reading mnc-pickups
261    
262    checkpoint58t_post
263    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
264    o pkg/mdsio:
265     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
266       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
267       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
268     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
269     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
270       either MDS_READ_FIELD or MDS_WRITE_FIELD )
271     - new S/R (to replace MDSWRITEMETA), which allows to write more
272       informations (variable names, time ...) to meta files.
273     - modify rdmds.m to give back the meta file content.
274    o pkg/diagnostics: change vertical interpolation to be safer, and more
275       flexible (define p-levels to interpolate to in data.diagnostics);
276      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
277       diagnostic pointer.
278    o pkg/seaice: more cleaning up of seaice_growth, added many comments
279    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
280    o fix multi-category seaice:
281     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
282       SEAICE_MULTICATEGORY
283     - fix short wave heat flux
284    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
285       and allow to use EVP solver. Change forward lab_sea: test both EVP
286       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
287    o Initial check-in of lab_sea adjoint
288      (very similar to natl_box_adjoint/code_seaice)
289      * used C-grid and EVP solver
290      * used KPP, GM/Redi
291      * uses inAdExact=.TRUE.
292      * gradient checks fail for both ADM and TLM
293        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
294        f.d. gradients actually seem more problematic than ADM, TLM gradients;
295        issue is related to forward mismatch between g77 an ifort
296    o pkg/seaice: overhaul of thermodynamics
297     - growth.F and groatb.F are replaced by new routine seaice_growth.F
298     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
299     - move a few global fields out of SEAICE.h into seaice_growth.F and
300       make them 2D (FICE/QNETO/ ...)
301     - remove FO (it is the same as QNETO)
302     - introduce a few local fields to avoid modifying external fields such
303       as atemp, etc.
304    
305    checkpoint58s_post
306    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
307      changed exf_set_gen.F so that
308        genperiod=0 means input file is one time-constant field and
309        genperiod=-12 means input file contains 12 monthly means
310    o CG2D: use pre-computed solver main-diagonal (stored in common block);
311      this affects truncation error ; generate new output file for exp. which
312      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
313        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
314        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
315        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
316        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
317        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
318    o start implementation of deep-atmosphere and anelastic formulation
319    o verification: remove 2nd copy of input files and use script "prepare_run"
320      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
321    o mom_common/vecinv/fluxform: fix a few initialisation isssues
322    o profiles: fix for multithreaded case
323    
324    o diagnostics: rename few diags:
325      s/'PRESSURE'/'RCENTER '/g
326      s/'TICE    '/'oceFreez'/g
327      s/'TAUX    '/'oceTAUX '/g
328      s/'TAUY    '/'oceTAUY '/g
329      s/'SWFLUX  '/'oceQsw  '/g
330      s/DIFx/DFxE/g
331      s/DIFy/DFyE/g
332      and add few ocean-forcing diagnostics:
333      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
334    o modifications to pkg/seaice/growth.F and budget.F, which change results of
335      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
336      as actual snow thickness.  It now refers everywhere to effective snow
337      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
338    
339    checkpoint58r_post
340    o modifications to pkg/seaice/growth.F, which change results of
341      lab_sea experiment: fixes pertain to melting snow over open water, to
342      masking EVAP under sea ice, and to using the correct AREA variable for
343      computations of EVAP, PRECIP, HSNOW, and GHEFF
344    o add ability to read bathy, salt, and theta using MNC (off by def)
345    o add flooding algorithm and advection of HSNOW for pkg/seaice;
346      both are turned off by default and do no change any results
347    o seaice advection with pkg/thsice: a step toward the use of non-linear
348      advection scheme, but #ifdef or commented out for now (requires more EXCH).
349    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
350      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
351      in natl_box (affects results @ truncation level: update output.txt)
352    o multi-threading and IO:
353      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
354      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
355        (needed to work with SingleCpuIO): tested in all verif. exp.
356    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
357      affects the results (but none of the verification test uses this scheme).
358    o Adding some pkg/diagnostics capability to pkg/seaice
359      (will certainly be subject to changes)
360    o ctrl: adding new control variables:
361      lwflux, lwdown, evap, snowprecip, apressure, runoff
362    
363    checkpoint58q_post
364    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
365      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
366      high_res_cube configuration by 4% on Columbia.
367    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
368      add (in global_with_exf/code) a version of EXF_INTERP_READ without
369      dynamical allocation (seems to work in multi-threaded).
370    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
371      single CPU io) so that TAF does not have to see EESUPPORT.h
372    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
373    
374    checkpoint58p_post
375    o obcs: stop if obcs is used with useCDscheme = .true.
376    o shelfice:
377     - fix a sign error so that no slip at shelfice interface works
378     - remove stop for combination non-hydrostatic code and shelfice. That does
379       not mean, that the results are correct, but at least they are numerically
380       stable
381    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
382    o added adjoint exch routined for all exch*3d* routines
383      and updated flow directives
384    
385    checkpoint58o_post
386    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
387      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
388    o change controling S/R for writing pickup file (new S/R do_write_pickup)
389      and clean-up reading/writing of pickup files.
390    o fix local version of read/write pickup (NH part) in rotating_tank/code
391    o simplify EXCH interface:
392     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
393     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
394    o added the regrid package
395    o shelfice:
396     - add a simple boundary layer scheme to reduce noise
397     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
398    
399    checkpoint58n_post
400    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
401       local variable (not in common block).
402    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
403      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
404      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
405        to work with SingleCpuIO.
406    o add "_d 0" to real constant of pkg/cfc subroutines ;
407       update exp. cfc_exemple & tutorial_cfc_offline output files.
408    o multi-threading and IO:
409      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
410        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
411      - barrier before and after reading.
412      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
413      - avoid using MDS_WRITELOCAL for LAND pkg output.
414      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
415        common-block variables ; Allows multi-threading with master-thread IO.
416    o change default MAX_NO_THREADS from 32 to 4 ;
417      and stop cleanly when MAX_NO_THREADS is too small.
418    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
419    
420    checkpoint58m_post
421    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
422       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
423    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
424       keep global_ocean.90x40x15 (for AD testing) with former secondary test
425       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
426    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
427        add MITgcm_tutorials (= code + all the tutorials)
428    o ecco, option to compute cost for total ssh (mean+anom)
429    o consistent with addition of ptracer and ssh in pkg/profiles
430    o profiles: adding ptracer and ssh
431    o testreport: change multi-test output-file name
432      (from output.txt.{name} to output.{name}.txt)
433    o profiles: now ok for mutli-tiles case
434    o seaice: add 4 parameters for different advection schemes for area,
435      (effective) seaice thickness, enthalphy, and snow height. Their default
436      is the standard parameter SEAICEadvScheme
437    o calc_gw:
438     - add cosFacU in zonal viscous flux (harmonic.visc.).
439     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
440       of tutorial_plume_on_slope.
441    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
442    o calc_gw: true flux-form, account for horizontal grid spacing.
443      update rotating_tank results, but not plume_on_slope (affected at
444      truncation level, 11 digits).
445    
446    checkpoint58l_post
447    o calc_gw:
448     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
449     - remove side-drag for now (need to fix it); update plume_on_slope results.
450     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
451    o commit code to make SST/SSS weights spatially variable
452      (based on either variable in-situ or variable initial T/S weights)
453    o pkg/ecco:
454      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
455        now based on horizontally varying weights wthetaLev, wsaltLev
456      * cost_averagesflags now returns year indices in addition to day, month
457      * sflux balance is performed on annual basis
458        (sflxumm, sfluxmm2, bal_sfluxmm)
459      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
460        including separate counting and multipliers
461    o pkg/rbcs
462      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
463    
464    checkpoint58k_post
465    o testreport:
466     - always build in dir. "build" (if not there, mkdir build instead of building
467       & running in input)
468     - run in dir run (if it exists), in build otherwise.
469     - call prepare_run (if input/prepare_run exists)
470     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
471    o pkg/exf modifications to interpolation and rotation routines for more
472       reasonable treatment of North Pole singularity: for tracers North Pole
473       value is set to northernmost zonal-mean value, for zonal velocity it is
474       set to zero, and for meridional velocity it is set to northernmost value.
475    o pkg/exf/exf_check_range.F
476     - add tile index to diagnostics and move stop statement to the very
477       end of the routine.
478    o pkg/diagnostics: (diagnostics_main_init.F)
479      define title of isomorphic variables according to the current config.
480    o pkg/thsice with pkg/seaice dynamics:
481    - fix domain of computation (interior only, required for exf) and do exchanges
482    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
483    o towards a standard way of dealing with multi-threading in MONITOR
484      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
485    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
486       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
487    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
488    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
489    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
490       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
491    o tracer advection:
492     - clean-up and simplify calc_common_factors.F
493     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
494       advection subroutine (but still not used within DST advection S/R)
495    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
496    
497    checkpoint58j_post
498    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
499      from file (collects calls previously in FORWARD_STEP)
500    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
501    o adjoint store dir. adjusted accordingly
502    o genmake2
503      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
504    
505    checkpoint58i_post
506    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
507      on wind stress (SEAICEstressFactor defaults to 1.)
508    o Total number of Timers is finite (<=40): comment out 2 non-essential one
509      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
510    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
511      on CS-grid: no longer loosing mass.
512    o exf & curvilinear-grid: no longer modify longitude xC & xG.
513    o pkg/ggl90: fix sloppy output and fix a bug
514    o pkg/seaice: added SEAICEuseEVPpickup parameter
515      - Set to false in order to start EVP solver with
516        non-EVP pickup files when using SEAICEuseEVP
517      - fix sign error in diffusion in seaice_calc_rhs
518    
519    checkpoint58h_post
520    * Modifications for bottom topography control
521      o replace hFacC by _hFacC at various places
522      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
523      o add non-self-adjoint cg2d_nsa
524      o update autodiff support routines
525      o re-initialise hfac after ctrl_depth_ini
526      o works for 5x5 box, doesnt work for global_ocean.90x40x15
527    * Adding verification for 5x5 box (4-layer) bottom topography control
528    
529    checkpoint58g_post
530    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
531       used for mean seasonal cycle, mean diurnal cycle); add an example
532       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
533    o pkg/ggl90:
534      - add parameter (minimum surface kinetic energy)
535      - fix bug (avoiding division by zero)
536    o couple pkg/thsice to pkg/seaice:
537      - modify advection in seaice to accomodate new scalar fields to be advected
538      - only muliDimAdection scheme work with seaice/thsice
539      - mapping of thsice-variables to seaice-variables, back and forth
540      - does not break the verification experiments, but does not give the
541        desired results either
542    o pkg/seaice
543      - make (default) second order advection a bit less confusing?
544    
545    checkpoint58f_post
546    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
547      to pkg/seaice):
548      - new routines thsice_map_exf and thsice_get_exf provide the interface
549      - add an additional formal parameter to thsice_solve4temp
550    o pkg/exf:
551      - add new fields wspeed, snowprecip (to be able to couple to thsice)
552      - correct Stefan-Boltzmann constant
553      - new parameter for longwave surface emittance
554      - separate some stuff from exf_bulkformulae into new routines  
555        exf_radiation, exf_wind
556      - add new parameters and constants: longwave emissivity for ocean, ice
557        and snow, evaporation parameters over ice
558      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
559        either wind from stress or stress from wind
560    o pkg/thSIce:
561    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
562    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
563       and THSICE_CALC_THICKN
564    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
565    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
566      to make debugging easier.
567    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
568    o pkg/bulk_force:
569      - clean-up comments and parameters ;
570      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
571    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
572      generate new output for test-experiment: aim.5l_cs.thSI
573    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
574      testreport accordingly
575    
576    checkpoint58e_post
577    o SEAICE_CGRID adjoint done
578    o R_STAR adjoint implemented.
579      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
580      * need to sort out init. of h0facc, etc.
581    o Make pkg/profile fully independent of ecco,cost, etc. stuff
582      to be able to use it in pure forward.
583    
584    checkpoint58d_post
585    o upgrade simple test-experiment to tutorial example:
586     step.1: duplicate the experiment and (step.2) will remove the old copy.
587      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
588      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
589      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
590      tutorial_global_oce_biogeo    <- copy of dic_example
591      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
592      tutorial_plume_on_slope       <- copy of plume_on_slope
593      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
594      tutorial_global_oce_optim     <- empty for now (David ?)
595      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
596     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
597    o correct a sign problem in cost_scat.F
598    o obcs and ptracers: fix boundary conditions for advections schemes
599      with larger stencil
600    o thsice adjoint: start
601    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
602      completeness
603    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
604      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
605    o ptracers adjoint:
606      * avoid extensive recomputatations
607      * fix missing re-init. of gptr (missed by TAF)
608    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
609      me to turn off the excessive output to STDOUT that this package produces
610    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
611      and add those terms in Vector-Invariant formulation.
612    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
613      if the control period (xx_hfluxperiod etc) is 0
614    o in profiles pkg, clean routines and fix details
615    o in ecco pkg, reading ssh data:
616      fix problem in case the model does not start at iter0=0
617    o fix mnc-pickup/restart for ptracers
618    o new package prifiles:
619      code to compute profile-based cost by Gael Forget
620      (modifs in ecco, ctrl, autodiff)
621    o Benign bug fix in initialization (spotted by M. Mazloff) of
622      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
623    
624    checkpoint58c_post
625    o adjoint: finish NLFS adjoint and provide reference output in
626      verification/global_ocean.90x40x15/results_ad_nlfs
627    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
628      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
629      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
630      with SEAICE_CGRID defined.
631    o move calendarDumps from "data" to "data.cal" and clean-up the code
632      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
633    o add useEXF & useCAL flags (for now, set in hard-coded way)
634    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
635      (were missing in NH mode, and wrong in quasihydrostatic mode).
636      waiting for Chris updated version of calc_gw to add those CALLs.
637    o fix bug in quasihydrostatic S/R ;
638      add a test for this option: global_ocean.90x40x15.qshyd
639    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
640      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
641    o add on/off flag useOffLine for package OFFLINE
642    o seaice:
643      - modify advection so that it works also on the C-grid
644      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
645        problem in multi-tile runs with C-grid
646      - add flags for clipping ice velocities and/or masking solver forcing
647      - fix drag (ocean on ice) formulation and a bug that caused noise in the
648        C-grid solver
649      - added a few comments to seaice_diffusion.F
650      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
651        are now exclusive)
652      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
653        required re-ordering the code a little:
654       + make DAIRN global variable (defined in SEAICE)
655       + move computation of the viscosities eta and zeta into a new separate
656         routine (because I need to recompute them in seaice_ocean_stress.F)
657    
658    checkpoint58b_post
659    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
660      update output.txt of exp. aim.5l_cs.thSI
661    o various mnc cleanups and improvements:
662      + shrink lookup tables by factor of ~4
663      + better error reporting when running out of lookup space
664      + able to handle longer path/file names (up to 500 chars)
665    o adjoint:
666      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
667      - TBD: "hidden" mom_vecinv recomp. in dynamics
668    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
669     (allow to differentiate between forcing components using new integer flags:
670      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
671     and add new flag to put Dissipation tendency out of Adams-Bashforth.
672    o ecco
673      - enable trend removal from SSH anomaly obs.
674    o adjoint
675      - a fix for PmEpR when #undef EXACT_CONSERV
676      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
677      - try to fix "hidden" recomp. in forward_step for NLFS
678        (NLFS seems broken sometimes after I checked it in)
679    o seaice:
680     - add c-grid version of the dynamic solver:
681       + three new routines that are the c-grid substitute lsr, dynsolver
682         and ostres
683       + put a few fields that were local to dynsolver into global common
684         blocks, so that I can move the computation of stresses etc into
685         seaice_lsr (saves coding but may break the adjoint).
686     - replace more hardwired parameters by runtime parameters
687     - add ice masks that mask the rhs of the implicit solvers where there
688       is no ice (commented out in seaice_dynsolver, because i am not sure
689       if this works properly), eventually this should replace the clipping
690       of ice velocities in seaice_dynsolver to +/-40cm/s.
691    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
692      include it only where its needed
693    o move balancing of fluxes before the call of external_forcing_surf
694    o seaice:
695      - correct units of turning angles (now they are really in degrees)
696      - move computation of GWATX/Y out of main routine into dynsolver
697      - initialize GWATX/Y in seaice_init
698    o Apply mask on Fresh-Water flux (needed for SSH forcing).
699      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
700    o seaice: add runtime flags for turning angles (default to zero)
701    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
702      and trend from exf forcing and ctrl control adjustments
703    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
704      (since checkpoint57x_post)
705    o change the default rotation period to 86164.s = the Earth rotation
706    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
707      and based on a reference stratification. Tested within hs94.cs-32x32x5.
708    o seaice advection: add code for choosing between the default (2nd order
709      central differences) and multiDim advection schemes provided by
710      pkg/generic_advdiff
711    o seaice:
712      - removed all references to SEAICE_GRID.h fields from
713        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
714        (cubed-sphere configuration will change a little)
715      - grid computations in seaice_init are obsolete now.
716      - cleaned up code a little so that is easier to read (hopefully).
717      - added new (better?) discretizations of default advection and diffusion
718        (turn on with SEAICEuseFluxForm)
719      - replace 1 in 3d global fields by kSurface in growth.F
720      
721    checkpoint58a_post
722    o seaice:
723      - bug fix in advect.F
724    o shelfice:
725      - separate shelfice load anomaly from pload (breaks with time
726        dependent forcing), => introduce constant field shelficeLoadAnomaly.
727        Its default is 0., but it may be computed more cleverly from (unknown)
728        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
729        done offline. A good approximation of the pressure load anomaly is
730        necessary to avoid large initial adjustment processes underneath
731        deep-reaching shelfice.
732      - small fix in ISOMIP shelfice_thermodynamics
733      - add more sophisticated thermodynamics of Hellmer (1989), this is
734        now the default
735      - give a few constants more intuitive names
736    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
737      if bulk formulae are used in long integration (especially EmPmR). Turn
738      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
739      if balancePrintMean, the imbalance that is substracted is printed to
740      STDOUT.
741    o fix bug (typo) in obcs_apply_eta.F
742    o add a new package shelfice which enables us to model the circulation
743      underneath shelf-ice with draughts of hundreds of meters.
744     - works
745     - to do: + include improved thermodynamics
746              + check whether kSurfC (from model/inc/SURFACE.h) can be used
747                instead of new field kTopC
748              + can we use topoFile, Ro_surf and existing code in ini_depth.F
749                instead of new field R_shelfIce and new code in ini_depth.F
750                and ini_mask_etc.F?
751              + adjust vertical mixing schemes?
752    o seaice pkg:
753     - add a cpp-flag to include a simple formula for a salinity dependent
754       freezing point of sea water at the surface
755     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
756       meridional stresses are now different (and hopefully correct)
757    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
758       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
759       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
760    o pkg/diagnostics: add options and parameters for regional-statistics
761       diagnostics ; define regions by reading a region-mask from a file
762       (might add other options later)
763    o pkg/bulk_force:
764     - add option and parameters to use AIM surface-flux formulae.
765     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
766       others forcing fields (defined in PARM05, parameter file "data") are loaded
767       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
768     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
769     - use the right EXCH call for uwind,vwind (to work on CS-grid).
770     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
771       and parameters (note: calcWindStress replaces .NOT.readwindstress).
772     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
773    
774    checkpoint58
775    o add "--embed-source" option to genmake2 which, when the supporting
776      tools can be compiled (as determined by genmake2) will turn on the
777      embed_files package which then embeds the entire MITgcm source code
778      (*.[fFhc] + Makefile) used for the build within the executable
779      - requested by CNH but off by default
780      - adds a paltry <9MB to the mitgcmuv executable in most cases
781      - only writes the output when useEMBEDSRC in eedata is true
782    o clean up 3-dim. relaxation codes:
783      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
784      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
785      * Thanks to Tom Haine for testing!
786    
787    checkpoint57z_post
788    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
789      affects output (@ truncation level) of exp. plume_on_slope ; updated.
790    o fix the pickup behavior for obcs in combination with ptracers
791    o fix a bug in ptracers_external_fields_load
792    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
793      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
794    o transfered surface NH pressure to eta field (if exactConserv).
795    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
796         and update lab_sea output.txt file.
797    o completing 3-dim. relaxation code: additional term
798         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
799      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
800      * At compile time, in "EXF_OPTIONS.h" set
801          #define  ALLOW_CLIMTEMP_RELAXATION
802          #define  ALLOW_CLIMSALT_RELAXATION
803      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
804          tauThetaClimRelax3Dim = 15552000.0,
805          tauSaltClimRelax3Dim  = 15552000.0,
806      * 3 cases:
807          1) Use a constant-in-time 3-dim. field
808          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
809          3) Real-time relax. to time-evolving prescribed field
810    o Adding Laplacian-type smoothness constraint on
811      initial and boundary (forcing) controls (ic, bc)
812      * enable at compile-time via
813        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
814      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
815      * Absolute scale somewhat unclear so far
816      * no area weighting was included since no other cost term does so far
817    
818    checkpoint57y_post
819    First step for a NLFS adjoint
820    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
821    o new init. routines for calc_r_star, calc_surf_dr
822    o still need to deal with ini_masks_etc
823    o testreport seemed happy
824    checkpoint57y_pre
825    
826    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
827    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
828    o add new offset feature to offline pkg (plus minor cleanup)
829    o cfc fixes for final year of integration
830    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
831      be in GCHEM_OPTIONS).
832    
833    checkpoint57x_post
834    o fix testreport Pb in multiple test experiment.
835    o cleanup our namelist syntax in verification:
836      - make it more F95 standards compliant (some work still needed)
837      - allows the vast majority of our tests to work with gfortran
838    o Non-Hydrostatic:
839     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
840     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
841    o Allow to apply AB on T,S rather than on AB(gT,gS):
842     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
843     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
844       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
845     - need a "clever" read_pickup to restart from the other AB formulation
846    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
847    o remove some unused variables (reduces number of compiler warnings)
848    o adjoint
849      * Disable useVariableViscosity for adjoint for time being
850        (there are a number of extensive recomputations)
851      * Initialize certain variables needed for adjoint
852    
853    checkpoint57w_post
854    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
855                 fix the singleCpuIO RS version of MDSWRITEFIELD
856       and add a WARNING if using globalFiles=T with multi-processors.
857    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
858      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
859    o tracer advection scheme:
860      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
861       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
862       was not very convenient).
863      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
864       (further tests needed for the implicit DST & Flux-Limiter schemes).
865    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
866      and sRef for convenience, handy, when you want to initialize
867      ptracers in a large domain with a constant non-zero value. Also,
868      untangle ptracers_init.F a little.
869    
870    checkpoint57v_post
871    o change dome exp. to use variable viscosity in side-drag terms.
872    o remove all the files from the cfc_offline test since they are now
873      incorporated into tutorial_cfc_offline which has been producing
874      identical results for a few days of testing
875    o add new parameter: sideDragFactor to enable half-slip-side BC
876      and change side-drag S/R to use viscosity from mom_calc_visc
877      (can switch back by setting sideDragFactor=0.); affects results at
878      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
879       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
880    o vorticity & strain are now computed without masking, to account for
881      no-slip-side BC in variable viscosity calculation ; mask is applied
882      anyway later on, before computing advection/coriolis terms.
883    o modify exp4 to test new obcs support for reading from external files
884      and for passive tracers
885    o fix behavior of ptracers_monitor when monitor output is written to a
886      netcdf-file; still not independent of monitor.F (writes in the same
887      file).
888    o change default value of tRef (put a uniform, meaningful value for ocean
889      & atmos) and initialize sRef (was missing, as Martin mentioned).
890    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
891      to be proportional to enstrophy dissipation length.  Thus,
892       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
893      This is now consistent with Smagorinsky and with the manual.
894    
895    checkpoint57u_post
896    o OBCS and PTRACERS: add open boundary support for passive tracers
897      - either use homogenous (pseudo) v.Neumann conditions or prescribe
898        OB-values from file; this is not different from the way theta and salinity
899        are treated
900      - however, Orlanski-radiation conditions are not supported, and the model
901        will stop if you use pTracers and Orlanski at the same time.
902      - beefed up the rountine obcs_external_fields_load: now only those open
903        boundary values are overwritten with values from files for which there
904        are really files, otherwise the OB-fields remain untouched. This makes
905        it possible to use different OBs at different ends of the domain (as
906        with EXF)
907    o reduce number of exch calls in shap_filt (s2).
908    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
909      truncation level) 4/5 MLAdjust test results (11&12 digits match).
910    
911    checkpoint57t_post
912    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
913    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
914      same truncation, independent of the face number: affects affects several
915      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
916    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
917      note that biharmonic viscosity + no-slip was not tested in any experiment.
918    o fix bug in non-linear free-surf side-drag ; generate new output for
919      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
920    o make mnc honor the writeBinaryPrec flag for most kinds of output
921    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
922    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
923      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
924    o add brackets in multi-terms sum to get same truncation, independent of
925      the face number (manage to get exactly same value of gU,gV at the cs-edge)
926      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
927    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
928      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
929      a maximum grid-scale Reynolds number.  Also, changes all length calculations
930      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
931      Suggested values of viscosity parameters found in mom_calc_visc.
932      Many new viscosity diagnostics available.
933    
934    checkpoint57s_post
935    o Add clearing-house for viscosity calculations, mom_calc_visc and
936      correct numerous bugs in LeithD and Smagorinsky discretizations.  
937      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
938      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
939      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
940      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
941      The Strain-Tension form is now called with useStrainTensonVisc=.true.
942      ViscAhStrain and viscAhTension are now retired.
943    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
944    o In response to JMC's bug report, genmake2 now ignores any soft-links
945      that it finds in the *current* directory when searching for files.
946      Soft-links found in any other source directories will still work as
947      they did before.
948    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
949      a C routine to unlimit the stack size
950    o mnc-ify pkg/aim snapshot vars
951    o mnc-ify pkg/land as requested by Daniel
952    o various changes to mnc including:
953      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
954      - output can now be grouped so that all files within a group
955          change the ITER portion of their names in lock-step together
956      - can now read ("global") PER-FACE (in addition to PER-TILE) files
957          and works with both EXCH1 and EXCH2 (but needs more testing)
958      - writing works for all verification test cases w/ g77 on Linux
959    
960    checkpoint57r_post
961    o make MNC variable initialization happen earlier
962    o add diagnostics for (almost) each term of the momentum Eq.
963    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
964    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
965    o remove MINIMAL_TAVE_OUTPUT option ;
966      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
967    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
968      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
969    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
970    o add time-dependent SST, SSS control
971    o cost terms in ecco/ modularized (new cost_generic.F)
972    o cost_averages routines are modularized (new cost_averagesgeneric.F)
973    o new infrastructure for seaice model vs. obs misfits in seaice/
974      * driver from the_main_loop.F is seaice_cost_driver.F
975      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
976      * gradient check in Exp. 6a of natl_box_adjoint/
977    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
978      (see README file)
979    
980    checkpoint57q_post
981    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
982    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
983      - bug was reported by Jean-Michel and Ian Fenty
984    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
985      update exp. cpl_aim+ocn output.
986    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
987      Needed for high-res. runs with large global files
988      to be able to limit tapelev size
989    o Changed some tests for adjoint:
990      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
991      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
992      * global_ocean.90x40x15/ back to default 3-level checkpointing
993    o Modifications to enable scripted COMMON to MODULE conversion
994      * verification/OpenAD/code/ has necessary scripts and description;
995      * converts, compiles and runs successfully;
996    
997    checkpoint57p_post
998    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
999    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1000      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1001    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1002    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1003      (was already the case for dissipation with mom_vecinv,
1004       and also the case for grad.PhiHyd when staggered-timeStep)
1005      This will allow to put dissipation out-off the AB time-stepping.
1006     Unfortunately, affects truncation error. Update output of exp. that "fails"
1007      (cg2d matching number) and leave the others for later: front_relax(10),
1008      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1009      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1010    
1011    checkpoint57o_post
1012    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1013      (2) its ready to be documented during the 20050801 DocFest
1014    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1015      for ideal_2D_oce and lab_sea on linux_ia32_g77
1016    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1017      in global1x1_tot/code_seaice_adj to access indices 32, 33
1018      (worth another tag)
1019    
1020    checkpoint57n_post
1021    o adding precip control xx_precip 32
1022    o adding swflux control xx_swflux 33
1023    o Replacing 10 forcing penalty cost routines by 1 generic.
1024    o Implementing partitioning in time-mean and variable adjustment
1025      for atmos. state.
1026    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1027    o in natl_box_adjoint:
1028      * updated exp 1 to 10
1029        (but does not have time-mean vs. variable split results yet)
1030    o updated global1x1/*_seaice_adj/
1031      to incorporate latest changes
1032    o enable useSingleCpuIO for mdsio vector routines
1033      (applies in particular to tapelev I/O)
1034    o removed inefficient K-loop in all active_file*control*.F
1035    
1036    checkpoint57m_post
1037    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1038      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1039    o pkg/exch2: filling of face-corner halo regions is optional
1040      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1041    
1042    checkpoint57l_post
1043     tag before updating tutorials (pre-release-2)
1044    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1045       for output and interpolation of input fields onto model grid)
1046    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1047       Affects results of exp. rotating_tank ; update output.txt.
1048    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1049          and taking the square quantity and/or using a fraction-weight field.
1050    o fix aim_diagnostics_init.F mate numbers.
1051    o add mnc output capability to diagnostics/diagstat and update
1052      our cvsignore files for the ACSII output generated
1053    
1054    checkpoint57k_post
1055    o lab_sea now uses diagnostics package and provides a suite of
1056      new EXF diagnostics output.
1057    
1058    checkpoint57j_post
1059    o exf
1060      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1061        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1062        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1063      * extended diagnostics output
1064        - now includes all EXF variables
1065        - hs, hl moved to common block
1066        - separate S/R for diagnostics, called after ctrl vector is added
1067        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1068        - EXFqnet contains true Qnet (i.e. includes qsw)
1069      * updated verif. lab_sea, global_with_exf
1070      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1071        to ensure that diagnostics sees a true EXFqnet
1072    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1073    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1074      several times with different frequencies.
1075    o mnc-ify the thsice package as requested by Daniel Enderton
1076      - the monitor--MNC output needs work
1077      - many attributes need to be added (most are currently blank)
1078    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1079      - many attributes need to be added (most are currently blank)
1080    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1081    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1082    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1083      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1084         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1085    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1086     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1087    
1088    checkpoint57i_post
1089    o Diagnostics package was changed: diagnostic allocation is now deactivated
1090      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1091    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1092      add 1rst Order upwind vertical Shear.
1093    o add a quick fix for A/B checkpointing in OFFLINE mode
1094    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1095      end-run around the C/Fortran linking horror in eesup/src/timers.F
1096    o added pkg/runclock: allows user to terminate run based on wall clock
1097    o added non-hydrostatic scaling parameter: nh_am2
1098    o pkg/my82: futile attempt to make results compiler-independent by adding
1099      some "_d 0", etc. no effect.
1100    o for mnc output, fill the 'T' coordinate var with myTime and create a
1101      separate 'iter' variable for iteration count
1102    o pkg/diagnostics:
1103      add new capability: output of Global/Regional & per-level statistics ;
1104      tested against monitor output (including land & thSIce) on various exp.
1105    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1106    
1107    checkpoint57h_done
1108      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1109      data.diagnostics, data.gchem, data.ptracers) is done.
1110    
1111    o pkg/diagnostics: prepare for Global/Regional statistics.
1112      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1113    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1114      and rename it: DIFFERENT_MULTIPLE
1115    
1116    checkpoint57h_post
1117    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1118    o pkg/diagnostics: change output frequency, now in seconds (instead
1119      of Nb of iterations). This requires to change data.diagnostics.
1120    checkpoint57h_pre
1121    
1122    o in mnc, let the user create the output dir if both mnc_outdir_date
1123      and mnc_outdir_num are false
1124    o add fflags() to pkg/diagnostics which allows one to specify, on a
1125      per-file basis, the file precision [default behavior is unchanged]
1126    o added diagnostics to pkg/kpp, including computation of mixed layer
1127      depth based on a temperature/density criterion
1128    o updated verification/natl_box to test the new pkg/kpp diagnostics
1129    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1130    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1131    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1132      not mnc -- this mistake was found by JMC and is now corrected
1133    
1134    checkpoint57g_post
1135    o add Adams-Bashforth 3rd Order time stepping:
1136      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1137      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1138    checkpoint57g_pre
1139    
1140    o make lambda[Theta,Salt]ClimRelax spatially varying
1141      (default remains spatially uniform constant based on tau)
1142    o added new control variables
1143      * init. uVel, vVel, etanN
1144      * lambda[Theta,Salt]ClimRelax
1145    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1146      (suggested by G. Forget)
1147    
1148    checkpoint57f_post
1149    o add parameter "baseTime" = model base time = time at iteration zero
1150      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1151      account for baseTime shift
1152    o move Coriolis arrays from PARAMS.h to GRID.h
1153    checkpoint57f_pre
1154    
1155    o mnc-ifying the seaice package
1156    o introduced an alternative length scale calculation for use in the limiting
1157      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1158    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1159    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1160      as well as grad(vort3).  Made it compatible with both approximate form
1161      for the cubed sphere and full form of these gradients.  Added flag
1162      useFullLeith to select between approximate and full form.  
1163    o add "d0" in getcon.F to reduce differences between compilers/platforms
1164      update output.txt of exp. fizhi-gridalt-hs
1165    o change port_rand funtion to allow to set the seed.
1166    o fix obscure MNC bug involving conversion between reals and integers
1167      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1168        new version is now more standards-compliant
1169    o adjoint-related modifications
1170      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1171      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1172      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1173    
1174    checkpoint57e_post
1175    o Adding eddy stress controls a la Ferreira et al.
1176    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1177    
1178    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1179      update output.txt of exp. fizhi-gridalt-hs
1180    o add more "Z" dimensions and associated coordinate vars to MNC
1181    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1182    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1183      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1184      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1185      months and years.  Requires pkg/cal.
1186    o diagnostics: add pickup functionality
1187      - off by default for backwards compatibility
1188      - current version only uses MDSIO -- MNC will be added
1189    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1190    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1191    
1192    checkpoint57d_post
1193    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1194    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1195      output from the diagnostics package
1196    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1197    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1198      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1199    o add coordinate variables to the MNC output from the diagnostics package
1200    o change MNC-flags default value: true when useMNC=TRUE
1201    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1202      the ability (off by default) to read the grid information using MNC
1203    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1204    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1205    o do snap-shot diagnostics at the middle of the time-interval (instead of
1206      at the end).
1207    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1208      new test for AIM with thSIce + slab-ocean
1209    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1210    o move state variable diagnostics to the beginning of the time step ;
1211      (note: still needs some work specially for snap-shot diagnostics)
1212      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1213    
1214    checkpoint57c_post
1215    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1216    o generate new output.txt files on faulks with g77 & the new -ieee option
1217    checkpoint57c_pre
1218    
1219    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1220      update output.txt of exp. global_ocean.90x40x15
1221    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1222      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1223    o add saltFlux(+File) forcing capability with periodicExternalForcing
1224    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1225    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1226    o improvements for the MNC output from DIAGNOSTICS:
1227      - correct handling of the unlimitied dimension
1228      - all dims now have associated coordinate variables
1229      - variables located at U, V, and Corner ("Z") points are now written
1230        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1231        *all* data points are output
1232    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1233    o added pkg/seaice/seaice_monitor.F
1234    o mdsio_readfield.F can now read files visible only to master MPI process.
1235    o pkg/seaice: some test code for ice-modified ocean stress
1236    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1237      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1238      spurious negative numbers for precipitation and humidity.  Will cause
1239      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1240    o pkg/ctrl/
1241      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1242        May be enabled via doPackDiag
1243      *  introduce z-scaling of
1244         + gradient (doZscalePack) and
1245         + control (doZscaleUnpack)
1246    o pkg/mdsio/
1247      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1248      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1249    
1250    checkpoint57b_post
1251    o simplify options in diagnostics_fill arguments (remove weird combinations)
1252    o fix MNC coordinate variables so that they now contain per-face index
1253      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1254      general, EXCH2 grids are only aligned to a "local" coordinate system
1255    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1256    o Implement instantaneous output within pkg diagnostics:
1257      setting a negative frequency in data.diagnostics produces
1258     "snap-shot" output (as opposed to time-average if freq > 0)
1259    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1260      NOTE: change ptracer diagnostics name: use 2 characters to work with
1261            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1262    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1263      becomes the coordinate variable for the 'T' dimension
1264    o add CF-style coordinate variables to MNC
1265      - just a first cut:  numbers are meaningless on the cubesphere and
1266        missing along the T axis but otherwise it works!
1267    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1268    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1269    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1270      this is based directly on what the model compute, so that the content of
1271      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1272    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1273    o clean up build options files for SunOS, in particular
1274      - remove -traditional from xmakedepend
1275      - change -xarch=v9 to -xarch=native for f77
1276      - restore use of make (not gmake)
1277      - add CC=gcc if using g77
1278    o changes per discussion of AM, JMC, & EH3 today:
1279      - move redundant "grid" variables out of "state" -- in preparation of
1280        creating proper CF-style coordinate variables and in recognition
1281        that any/all grid variables can be easily copied (eg. w/NCO) from
1282        the grid files into any of the other NetCDF files
1283      - *always* output grid variables with MDSIO (this will eventually be
1284        changed)
1285      - output MNC grid file if useMNC is true
1286    o every instance of _END_MASTER() has been found and replaced with
1287      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1288      preprocessors
1289    o re-arrange diagnostics pkg initialisation:
1290     - allow each package to extend the available diagnostics list
1291     - add some checking and fix small problems (multi-threaded, ...)
1292     - new S/R diagnostics_fill (replace fill_diagnostics):
1293       look through the short list of active diag. (instead of the long list)
1294       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1295    
1296    checkpoint57a_post
1297    o this set of changes restores TAMC compatibility
1298      tested for global_ocean.90x40x15 adjoint on trough
1299      (what a pain)
1300    
1301    checkpoint57a_pre
1302    o some modifs in tools/build_options for sunos
1303    o call ctrl_pack for ctrl at end for optimcycle=0
1304    
1305    checkpoint57
1306    o add horizontal bi-harmonic viscosity for vertical velocity
1307      - new parameter viscA4W (defaults to viscA4)
1308      - affects only non-hydrostatic code
1309      - to be done: no-slip lateral boundary conditions
1310    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1311    o implement Implicit Vertical advection for pTracers
1312    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1313      (implemented also for implicit vertical diffusion & advection)
1314    o OBCS: extend application of tracer open boundary conditions
1315      to a strip beyond the boundary of width Olx/Oly
1316    o add call monitor to TAF set of required calls (flow directives)
1317      and include in natl_box_adjoint
1318    o untangle a few ifdefs related to cost, ctrl, autodiff
1319      untangel a few ALLOW_ECCO_OPTIMIZATION
1320    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1321      (theta2, salt2 in ecco_cost_weights)
1322    
1323    checkpoint56c_post
1324    o OBCS as control variables
1325      - update ctrl_ad_diff.list, obcs_ad_diff.list
1326      - remove balance of obcs controls from default
1327      - fix index bug nobcs in ctrl_init
1328      - fix dummy fields filen in ctrl_pack
1329      - add dummy weights for obcs
1330    o lsopt: comment out fort.94 output
1331    o optim:
1332      - remove unnecessary header files
1333      - adjusted namelists
1334      - add xerbla.F to Makefile
1335    o exf:
1336      - multiple modifications of exf_check_range
1337      - unit change in exf_init_runoff from [m/year] to [m/s]
1338    o mdsio:
1339      - i/o-vector change debugLevel from debLevA to debLevB
1340    
1341    checkpoint56b_post
1342    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1343      is called from DO_THE_MODEL_IO
1344      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1345      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1346      - clean up PTRACERS_WRITE_TIMEAVE a little
1347    o add another verification experiment that tests both the cfc-pkg and
1348      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1349      reactive tendencies treated inline with regular timestepping
1350    o testreport previously did a lousy job of comparing small numbers, so
1351      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1352      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1353      testreport.
1354    o ptracers_monitor: bug fix for MPI
1355    
1356    checkpoint56a_post
1357    o GCHEM: finish reorganizating the package
1358      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1359        (introduces another 3D-array for each passive tracer, but only if
1360        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1361        gchemTendency is not needed because the timestep is done separately)
1362      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1363      - GCHEM is now---more or less cleanly---separate from PTRACERS
1364      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1365        so clear to me how that should be done in a general way.
1366    o CFC: improve formatting of output in CFC_ATMOS
1367    o PTRACERS:
1368      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1369        that ALL experiments with ptracers enable can be checked. This makes
1370        GCHEM_MONITOR obsolete.
1371      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1372        monitorFreq
1373      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1374    o add PTRACERS (PTR0[1-5]) to testreport output
1375    o exf_check_range:
1376      * default changed to .TRUE.
1377      * will check values for niter0 if debLevA, every timestep if debLevB
1378      * STOP in exf_check_range if 'out of range'
1379      * range chosen generous to allow for potential extema
1380      TBD: a version with stricter range
1381           permitted range would be runtime parameters
1382    o GMredi:
1383      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1384      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1385      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1386    o GCHEM:
1387      - move call to GCHEM_FORCING_SEP, so that it is now called before
1388        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1389      - introduced a useGCHEM runtime flag and applied it everywhere.
1390      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1391        this flag is now only visible within GCHEM-pkg routines.
1392      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1393        be replaced by a 3D array that is computed before thermodynamics; for
1394        this, the tracer ID iTracer had to be included into the parameter list
1395        of ptracers_forcing
1396      - set up forward_step to call gchem_forcing, that will replace
1397        gchem_forcing_int in ptracers_forcing
1398      - cleaning up
1399    o small cleaning of exch2: remove files that are also in eesupp/src
1400    
1401    checkpoint56
1402    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1403    o mnc: cleanup "full" files--fixes out-of-memory problem
1404    o ECCO-GODAE
1405      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1406      * fully merged and updated from SIO code
1407        windstress sign change affects
1408        - exf_inscal_[u/v]stress
1409        - sign of xx_tau[u/v] adjustments
1410        - signs in cost_scat
1411      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1412      * natl_box_adjoint updated and compressed
1413      * 2-level checkpoint switch added
1414        (tested in EXP. 1 of natl_box_adjoint)
1415      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1416    o SVD
1417      * first complete, non-hacked version for SVD calculations
1418      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1419        performed via direct access files admtlm_vector.it????
1420        (via ctrl_[un]pack)
1421      * optimcycle is used for ARPACK iteration counter
1422        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1423      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1424        and add linear transforms where necessary
1425      * controls are initial/final SST, SSS (can be extended; need to check
1426        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1427    o mdsio: filename info to both stderr, stdout
1428    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1429      from sign change
1430    
1431    checkpoint55j_post
1432    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1433      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1434    o add consistent build directories and .cvsignore files to verification
1435    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1436    o make all subroutines 30 or less characters in length for certain older
1437      compilers to work (a thorough search only turns up two routines in
1438      pkg/ptracers)
1439    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1440      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1441    
1442    checkpoint55i_post
1443    o change arrays for total vertical diffusivity (2.D if explicit,
1444      3.D if implicit) ; each ptracer uses its own background value.
1445    o added mnc/NetCDF output capability to ocn_compon_interf
1446      - added bits to verification/cpl_aim+ocn so that it can run on
1447        ITRDA and other clusters without the mpirun "-wd" option
1448    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1449      configuration
1450    o give MNC the ability to create additional files rather than
1451      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1452      - the default is just less than 2GB which is a practical limit
1453        on many systems
1454    o Compute the non-local term using either KPP vertical diffusivity (=default)
1455       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1456    
1457    checkpoint55h_post
1458    o add verification test "vermix"
1459    o remove all the *_ioinc flags and replace with the single global
1460      outputTypesInclusive flag
1461    o allow to set a vertical profile of vertical diffusivity for T & S
1462    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1463    o useMNC moved from data.mnc to data.pkg
1464    
1465    checkpoint55g_post
1466    o Renaming carbon AD experiments to comply with testreport conventions
1467    o Updating adjoint of Held-Suarez hs94.1x64x5
1468    o Fixing directives for non-ECCO forward_step, after ECCO directives
1469      have been fixed to avoid recomp. of do_oceanic_phys
1470      Works well for global_ocean.90x40x15,
1471      but recomp. issue remains for carbon
1472    o Updating adjoint output for natl_box_adjoint after
1473      pkg/ecco has been modified (see taga c55d_post)
1474    
1475    checkpoint55f_post
1476    o rename to timeave_init_fixed
1477    
1478    checkpoint55e_post
1479    o some delicate re-shuffle of store directives to avoid one
1480      extra call of do_oceanic_physics
1481      affects ecco_the_main_loop.F, do_oceanic_physics.F
1482      checkpoint_lev1_directives.h
1483    o NB: this may break global_ocean adjoint temporarily,
1484      but it is clear how to fix it. Will do later, need this now.
1485    
1486    checkpoint55d_post
1487    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1488    o ecco_cost_weights is modified to 1x1 runs
1489    o modifs to allow observations to be read in as
1490      single file or yearly files
1491    o enable to read exf forcing fields as either
1492      single file or yearly files (flag useExfYearlyFields)
1493    checkpoint55d_pre
1494    
1495    o switch between 2-level and 3-level checkpointing
1496    o add ability of MNC to write local and "partial" (eg. 2D slices where
1497      the full 3D field is never actually stored) arrays to NetCDF files
1498      with the correct (that is, the complete multi-dimensional) set of
1499      array indicies
1500      - used in mom_vecinv() to write the diagFreq output
1501      - tested (demonstrated) in verification/aim.5l_cs
1502    o further mnc-ification
1503      - add verification/lab_sea to the list with mnc setups
1504      - fix undefined mnc v-names in cd_code
1505      - add kpp to mnc output (both snapshot and timeave)
1506    o non-hydrostatic code
1507      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1508        in calc_gw.F
1509      - defaults to viscAh
1510      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1511        friction or Leith) in non-hydrostatic mode, as long as there is
1512        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1513    o pkg/cost
1514      extend simple cost functions to treat time mean quantities
1515      (T,U,V) via cost_accumulate_state from cost_tile
1516    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1517        be 2 times larger than the minimum size the advection scheme requires.
1518        now get a perfect conservation of salt in advect_cs test-exp (updated)
1519    o GGL90 (Gaspar's TKE mixed layer)
1520      - add horizontal diffusion of TKE, requires exchanges in
1521        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1522        default. In OPA there is no horizontal diffusion of TKE but the
1523        mixing coefficients are computed from a horizontal average of TKE of
1524        6 points or so. I think that diffusion has a little more physical
1525        justification.
1526      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1527        was in vain)
1528      - mask tke-variable in ggl90_init
1529    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1530    o fix biharmonic diffusion on CS-grid.
1531    o more obcs stuff
1532      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1533        for reading boundary values. This routine is called from
1534        obcs_prescribe_read
1535      - updated obcs_check
1536      - changed sponge layer relaxation parameter units for days to seconds
1537      - turned off sponge layer by default
1538      - changed argument list of OBCS_CALC to myTime+deltaTclock
1539      - fixed about 35 bugs in obcs_external_fields_load
1540    
1541    checkpoint55c_post
1542    o obcs stuff
1543      - new runtime flags useOBCSprescribe, useOBCSbalance
1544      - re-arranged obcs_calc
1545      - moved exf_getobcs to obcs_prescibe_read
1546        obcs_prescibe_read is called after ORLANSKI stuff
1547        and independent of it (executable can contain all).
1548      - updated obcs_check
1549      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1550        These may be necessary only if tangential velocities are
1551        prescribed at OB, not sure, needs testing.
1552    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1553      which simplifies the calls and passes the ifc check-bounds test
1554    
1555    checkpoint55b_post
1556    o add a 2D scalar, Z location, exchange_2 routine.
1557    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1558      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1559      affects advect_cs results (for the wrong reason): update output.txt
1560    o use a more standard discretization for biharmonic viscosity ;
1561     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1562      affects results of dome set-up: update output.txt
1563    o fix gad_advection.F (CubedSphere part), back to version 1.23
1564    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1565    
1566    checkpoint55a_post
1567    o merged code to
1568      * prescribe/read time-dependent open boundaries
1569        (works in conjunction with exf, cal)
1570      * sponge layer code for open boundaries
1571      * each boundary N/S/E/W now has its own CPP option
1572        (healthy for the adjoint)
1573    
1574    checkpoint55
1575    o up-to-date adjoint of previous breaks
1576      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1577      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1578      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1579      - carbon: * remove tr1-related adjoint verification
1580                * add ptracer as control variable
1581    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1582      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1583    
1584    checkpoint54f_post
1585    o in verification/carbin/ remove experiment related to
1586      ALLOW_PASSIVE_TRACER (array tr1 etc)
1587      code_ad/ input_ad/ results_ad
1588    
1589    o add two new packages
1590      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1591        + subject to optimization (memory)
1592      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1593        + subject to reordering (many GOTOs in the original code)
1594        + so far opps is called for every (i,j) point, and then operates in
1595          the vertical; one may want to reorder the scheme in order operate in
1596          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1597          fields)
1598    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1599      - all verification tests compile and run with linux_ia32_g77
1600      - defaults are compatible with current input files--nothing
1601        should change if you were not previously using MNC
1602      - MNC output has been added in numerous places (eg. timeave)
1603        but there are still a few writes not yet do-able with MNC
1604        (this is in progress)
1605      - flags now allow for either/or/both use of MDSIO and MNC and
1606        documentation will soon follow
1607      - numerous small formatting cleanups for ProTeX
1608    o add version info (via BUILD_INFO.h) to MNC and stdout
1609    
1610    checkpoint54e_post
1611    o add two new packages
1612      - pp81 (Packanowski and Philander, 1981), Richardson number and
1613        stratification dependent mixing
1614      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1615      - these scheme operate in a similar manner as KPP (without ghat, of
1616        course), however there is only one diffusivity that is used for both
1617        temperature and salinity (and passive tracers)ç
1618    o add offline package
1619    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1620      provided by Stephanie Dutkiewicz
1621    o genmake2: add ability to search for C compilers and cleanup test output
1622      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1623    
1624    checkpoint54d_post
1625    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1626    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1627      leading to additional shift by 5 days each year of integration
1628       (i.e. leading to considerable offset over the years)
1629    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1630    o start with no AB and no initial filtering (staggerTimeStep):
1631      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1632    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1633      (external loading & cpl import/export stay in forward_step.F)
1634    o update coupling interface to work with new staggerTimeStep
1635    o change MDSIO ptracers_pickup.
1636    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1637    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1638    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1639    
1640    checkpoint54c_post
1641    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1642      this affects (truncation error) output.txt of test-exp:
1643       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1644    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1645    o change Qnet to always be the net heat flux, (+upward).
1646      affects (truncation error) output of natl_box exp.: updated
1647    o define the max number of passive tracers in PTRACERS_SIZE.h
1648    o start to test mnc routinely in exp0
1649    o add sea-ice loading (sIceLoad) as a new forcing field.
1650    
1651    checkpoint54b_post
1652    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1653       impressive on Altix and Opteron systems)
1654    o diagnostics can now write NetCDF files through the mnc package
1655    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1656    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1657    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1658      affects (truncation error) output of lab_sea & natl_box exp.: updated
1659    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1660    
1661    checkpoint54a_post
1662    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1663    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1664    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1665    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1666      + internal_wave (shift in writing cg2d_ini_res)
1667    checkpoint54a_pre
1668    
1669    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1670      - modified verification/lab_sea and natl_box_adjoint accordingly
1671    
1672    checkpoint54
1673    checkpoint53g_post
1674    o prepare splitting of thermodynamics: store convect.counter in common block
1675    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1676      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1677    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1678    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1679    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1680    o restore adjointability
1681    
1682    checkpoint53f_post
1683    o modifications that affect AIM experiment results (update output.txt):
1684      - no advection of S at top interface Nr (pkg/generic_advdiff)
1685      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1686    o AIM pkg:
1687      - include stability function into surf.Flux derivative relative to Tsurf
1688      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1689    
1690    checkpoint53e_post
1691    o merged cylindrical coord configuration
1692    o added rotating_tank experiment
1693    checkpoint53e_pre
1694    
1695    checkpoint53d_post
1696    o faulks upgraded: re-generate output.txt that have changed:
1697       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1698    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1699    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1700    o added Sadourny discretization of Coriolis
1701      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1702      - re-enabled use of omega3 (useAbsVorticity)
1703    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1704      vector-invariant equations
1705      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1706    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1707      hopefully without new bugs
1708      - still to do: biharmonic friction for non-hydrostatic w
1709    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1710    o regenerated output for global_ocean_ebm (using -ieee)
1711    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1712      of mom_common/
1713      - simple re-arrangement of instructions within computing loop
1714    checkpoint53d_pre
1715    
1716    checkpoint53c_post
1717    o new version of coupler for AIM+thSIce and Ocean models
1718     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1719     - land: change Evaporation of snow
1720     - aim with thSIce: fix bug in snow-precip.
1721    o changes to calc_gw.F
1722     - bug fix for w^2 term near the bottom boundary
1723     - (hopefully) improve the lateral slip boundary condtions for use with
1724        partial/looped cells
1725      - because the bug fix changes two verification experiments anyway (exp5
1726        and plume on slope), change the lateral boundary condition from half slip
1727        to the value of no_slip_sides
1728    o ebm package wasnt quite up to the parallel task. Fixed that.
1729    o Adjoint of EBM package + verification
1730      * TLM OK
1731      * ADM not sufficient accuracy yet (needs further testing)
1732    
1733    checkpoint53b_post
1734    o Commiting new energy balance model to repository
1735      * package is pkg/ebm
1736      * verif. is verification/global_ocean_ebm
1737      * references are in ebm_driver.F
1738    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1739    C        Global thermohaline circulation. Part I:
1740    C        Sensitivity to atmospheric moisture transport.
1741    C        J. Climate 12(1), 71-82
1742    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1743    C        Global thermohaline circulation. Part II:
1744    C        Sensitivity with interactive transport.
1745    C        J. Climate 12(1), 83-91
1746    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1747    C        Destabilization of the thermohaline circulation
1748    C        by atmospheric eddy transports.
1749    C        J. Climate 7(12), 1870-1882
1750    o Will need long integration testing.
1751    checkpoint53b_pre
1752    
1753    o created pkg/mom_common in preparation for variable viscosity code
1754    o renamed and split ini_mnc_io
1755    o pkg/land: only liquid water can diffuse or run-off
1756    o AIM using land: soil wetness availability account for snow
1757    o added printMapIncludesZeros to EEPARMS namelist
1758    
1759    checkpoint53a_post
1760    o restore TAMC compatiility for exf_constants.h
1761      (no usage of _d in .h)
1762    o Additional storing in KPP in an attempt to fix
1763      TAMC problem with adjoint of KPP code.
1764      (no success...)
1765      Identical code works fine with TAF.
1766    o Fixed verification/natl_box_adjoint experiments.
1767      Initial conditions for Experiments 4 and 5 are now
1768      set to "SEAICE_initialHEFF=0", which is more reasonable,
1769      and hence gives results closer to that of Experiment 2.
1770      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1771    
1772    checkpoint53
1773    o stable checkpoint with up to date adjoint
1774      TLM tests only run for 1st grdchk at the moment. Its unclear if
1775      this is a code problem or a problem with resetting code for g_
1776      variables that is being autogenerated wrong.
1777      Otherwise:
1778       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1779       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1780         are both still in chaos following their security messes.
1781    
1782    checkpoint52n_post
1783    o various build (mostly genmake2) changes including:
1784      - ability to build/run more easily within Cygwin and MacOS X
1785      - more complicated Makefiles with a stronger dependence on Gnu Make
1786    o pkg/seaice modifications
1787      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1788        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1789        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1790      - changed proxy for geostrophic velocity and updated
1791        verification/lab_sea/results/* accordingly
1792      - removed ADI dynamic solver from pkg/seaice
1793      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1794        they caused a segmentation fault under certain circumstances
1795      - removed unused field WATR
1796    o bug fix in exf-package:
1797      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1798         now reflect that.
1799    o small fixes in the cal-package:
1800      - set reference date to first of January for the 'model'-calendar
1801      - failing of cal_CheckDate in cal_FullDate now actually results in a
1802        warning
1803    o small modifications in exf-package to increase flexibility:
1804      - change climtempfreeze from a constant to a runtime parameter that
1805        is specified in data.exf_clim (default = -1.9)
1806      - introduce runtime parameter windstressmax (default = 2.0) that is
1807        specified in data.exf
1808    o fix in pkg/thsice:
1809      - update Evap (Tsf changes) to be consistent with Latent heat flux
1810      - maintain snow precipitation unchanged (even if Tsf >=0).
1811     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1812    
1813    checkpoint52m_post
1814    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1815      this does not change any of the results, because myIter=0 in swfrac always
1816      lead to jwtype=2 (the default anyway), but the call makes little sense
1817      as a default
1818    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1819    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1820      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1821    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1822    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1823    o extending useSingleCpuIO option to work with new exch2 I/O format
1824      - old-style, missing-tile I/O is still accessible by defining CPP
1825        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1826    o monitor package can write to NetCDF files and/or STDOUT
1827    o fix re-definition bug in MNC_GRID_INIT_ALL()
1828    o doc/api_reference added
1829      - a framework for building an API Reference Manual using all
1830        the "protex" comments embedded in the code
1831      - see pkg/generic_advdiff, pkg/mnc for examples
1832    o MNC:
1833      - make myThid the last argument for all subroutines
1834      - new default for the grid files: NO halos
1835      - add useMNC and other run-time flags
1836      - separate per-file-group handling of the unlimited dimension
1837      - early initialization of MNC w/ flags read at the eeboot stage
1838        and lookup tables set in initialize_fixed
1839      - write all MNC output to a freshly-created directory
1840    o thermodynamics sea-ice (thsice) is now tested with testreport.
1841    o test exp. advect_cs: use the standard cs32 grid ; update output.
1842    o Added functionality to grdchk:
1843      pick global i,j,k position (or nearest wet) where to perform check.
1844    
1845    checkpoint52l_post
1846    o new land formulation:
1847      a) use ground enthalpy as prognostic variable to ensure exact
1848         energy conservation.
1849      b) account for water temperature and for latent heat of freezing
1850         in all processes (rain, run-off, ground storage)
1851      c) compute surface and ground temperature implicitly.
1852    o aim_v23 modification for new land model:
1853      a) Treat separately land / ocean / sea-ice surface fluxes
1854         to allow implicit computation of land & sea-ice surface temp.
1855      b) add snow precipitation.
1856    checkpoint52l_pre
1857    
1858    o fix problem (when 1 tile is empty) in min/max monitor.
1859    o fix bug in timeAve (u,vZetatave in common block)
1860    o no restoring terms under ice for pkg/seaice
1861    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1862    o bug fix for pkg/seaice pickups
1863    o change MNC call locations and add coordinate attributes
1864    o mask vorticity at the corner ; affects global_ocean.cs output
1865    o fix ini_curvilinear_grid ; test CS experiments with mpi
1866    o aim.5l_cs: modify sea-ice fraction input file ; update output
1867    o exf: Adding simple range check routine for exf fields after read
1868    
1869    checkpoint52k_post
1870    o removed top-level directory "diags"
1871      - we migrated these functions to pkg/timeave a long time ago
1872    o fixed bug introduced in pkg/monitor
1873    o accuracy ctrlprec = 32 insuffient for gradient checks using
1874      averaged fields (I/O via cost_averages)
1875      -> use ctrl.h in active_file*.F to control I/O precision.
1876    o paramter list of CALL ADTHE_MAIN_LOOP
1877    o added initial do_the_model_io to ecco
1878    o set all ...Freq to zero after cost_final
1879      taveFreq, dumpFreq, pChkptFreq
1880    o MAIN and ECCO differentiability restored
1881    
1882    checkpoint52j_post
1883    o fix nchklev in tamc.h for global_ocean...
1884    o Bringing flow and store directives up-to-date
1885    o Really weird thing!
1886      call do_the_model_io from the_main_loop with parameters
1887      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1888      TAF places a faulty re-call of initialise_varia
1889      after cost_final call which should not be there!
1890    checkpoint52j_pre
1891    
1892    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1893      error messages
1894    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1895    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1896      debug output
1897    o modfied mdsio_writefield.F to handle non-global files under exch2
1898    o update AIM Cubed-Sphere exp (aim.5l_cs):
1899      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1900    o update AIM Equatorial Channel exp:
1901      use standard aim_v23 pkg and change the SST fields to be more realistic.
1902    o globalFile now works with exch2
1903    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1904      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1905    o limit timeave output for hi-res integrations
1906    
1907    checkpoint52i_post
1908    o removed CPP_EEOPTIONS.h from verification/*/code
1909    o updated the tiling for global_ocean_pressure
1910    checkpoint52i_pre
1911    
1912    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1913      the old pkg/aim).
1914    
1915    checkpoint52h_pre
1916    o shortened offending lines in exch2_send_rx?.template
1917    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1918    o genmake2: add build & execute test for NetCDF code
1919    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1920      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1921    o added useSingleCPUIO flag to monitor.F and mon_out.F
1922    o added temporary hack for sea-ice dynamics on the cube:
1923      metric terms are ignored and it is assumed that
1924      there is no sea-ice on cube faces 1, 2, 4, and 5.
1925    
1926    checkpoint52f_post
1927    o added exch2 cube routines to pkg/exch2
1928    o modified hs94.cs-32x32x5 to use it
1929    o added new grid files to hs94.cs-32x32x5
1930    checkpoint52f_pre
1931    
1932    checkpoint52e_post
1933    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1934      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1935    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1936      to work with implicit vertical advection and AB ;
1937    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1938    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1939     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1940    checkpoint52e_pre
1941    
1942    o fix bug in impldiff when Nr=1 or Nr=2.
1943    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1944    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1945    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1946      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1947    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1948    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1949    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1950    
1951    checkpoint52d_post
1952    o re-tiled many expts to allow comparison in multi-processor mode
1953      - updated output accordingly
1954      - changed hs94.128x64x5 to use intial T from file rather than use the
1955        random number generator
1956    o add infrastructure in model routines for fizhi and gridalt packages
1957    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1958    o changes to permit hi-res, cubed-sphere, configuration
1959      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1960      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1961      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1962        of surface winds for the cube
1963      (A verification experiment, based on global_ocean.cs32x15, but with
1964       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1965       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1966       complete with example surface forcing files and matlab scripts to look
1967       at the output and compare it with that of global_ocean.cs32x15.)
1968    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1969       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1970       to conform to the common rule.
1971    o check-in the first version of the coupler + interfaces for multi-components
1972       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1973       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1974       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1975       - ocean and atmos. share the same horizontal grid (no interpolation).
1976       - exchanges between component and coupler is done in forward_step
1977    o new verification experiment, cpl_aim+ocn:
1978       coupled ocean - AIM atmosphere on cs32 grid.
1979    
1980    checkpoint52d_pre
1981    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1982    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1983    
1984    checkpoint52c_post
1985    o Fixing OPTIONS files for use of exf:
1986      - ALLOW_ECCO not needed
1987      - ECCO_CPPOPTIONS.h should not be included from
1988        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1989        as has been the case in the past
1990      - All cal/exf related options are currently set in
1991        single header file. Should remain so until we
1992        agree on a consistent new policy.
1993    o Removed all CPP options for cal package.
1994      cal has no more CPP options.
1995    o modified STOREs in GAD_ADVECTION
1996    o corrected key comp. for passkey
1997    
1998    checkpoint52b_post
1999    o new version: "thsice" of thermodynamic sea-ice pkg:
2000     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2001     - modify fluxes but do not change theta directly;
2002     - light cleaning of bulk_force pkg (still needed with thsice).
2003     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2004       + output_thsice.txt to test thsice & bulk_force pkgs.
2005    o put back grid & coriolis monitor output.
2006    checkpoint52b_pre
2007    
2008    o call "do_the_model_io" at the beginning (=> dump initial state)
2009    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2010    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2011      (need info on NUMBER_OF_PTRACERS)
2012    o missing PTRACERS headers in some routines
2013    o default tamc.h in pkg/autodiff supposed to crash
2014      to ensure proper customization
2015    
2016    checkpoint52a_post
2017    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2018      - moved surfaceTendencyTice from pkg/seaice to main code
2019      - subroutine FREEZE_SURFACE now limits only surface temperature
2020        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2021        => new output.txt for global_ocean.cs32x15 & global_with_exf
2022      - keep the old version of FREEZE for backward compatibility;
2023        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2024      - corresponding modifs for TAF directives
2025    o added surface flux output variables to TIMEAVE_STATVARS
2026    o time-averaged output for pkg/ptracers
2027    o fix problem with ECCO-related divided adjoint
2028      snapshot file was missing some ad-variables,
2029      but no warning issued by TAF
2030    
2031    checkpoint52a_pre
2032    o some bug fixes for #undef REAL4_IS_SLOW
2033    
2034    checkpoint52 = ecco_c52_e35
2035    o after testing adjoints of checkpoint51u_post
2036    
2037    checkpoint51u_post
2038    o this is the post-merge tag of the ecco-branch
2039      (needs another clean checkout and re-testing)
2040    o various natl_box_adjoint configs and results
2041      but no input fields
2042    o obcs adjoint not yet merged!
2043    o adding ECCO global 1x1 and 2x2 degree configs
2044    o updated/extended some store directives for seaice
2045    o pkg/ecco now containes ecco-specific part of cost function
2046    o top level routines the_main_loop, forward_step
2047      supersede those in model/src/
2048      previous input data.cost now in data.ecco
2049      (new namelist ecco_cost_nml)
2050    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2051    
2052    checkpoint51t_post
2053    o this is the pre-merge tag of the ecco-branch
2054    
2055    checkpoint51s_post
2056    o cleanup: removed various obsolete #define-s
2057    o pkg/grdchk
2058      - renamed 'ph-grd 3' to 'grad-res'
2059      - merged from ecco-branch
2060        (remaining bug fixes for obcs gradient checks)
2061      - additional high-precision output for testreport
2062        (grep for 'precision_grdchk_result')
2063    
2064    checkpoint51r_post
2065    o cleaned up or removed CPP_OPTIONS.h files
2066    o updated results for some of the tests to reflect the new
2067      optfiles (-ieee: -O0 instead of -O3)
2068    
2069    checkpoint51q_post
2070    o cd_code:
2071      - moved cd_scheme.F -> cd_code_scheme.F
2072      - separate read_checkpoint from cd_code_ini_vars.F
2073      - separated cd_code part from write_checkpoint
2074      - updated AD_SOURCE, generated .flow
2075      - added CD_CODE_VARS.h to the_main_loop
2076      - Moving cd_code specific store dir.s to pkg/cd_code
2077    o ctrl package totally restructured
2078      - pack/unpack now optional and decoupled from
2079        xx_/adxx_ I/O
2080      - ctrl_pack/unpack cleaned
2081        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2082      - confined inclusion of AD_CONFIG.h to where necessary.
2083    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2084    
2085    checkpoint51p_post
2086    o create initial cd_code package
2087      - WARNING: the initialization of fields within packages
2088        is broken because INI_FIELDS (where READ_CHECKPOINT is
2089        called) is called *before* PACKAGES_INIT_VARIABLES.
2090        This seems to be backwards since
2091        1) its important to initially zero the entire field including
2092           the "halo" region
2093        2) zeroing needs to be done *before* reading pickup info
2094           and the pickup call might or might not happen in any
2095           particular run
2096      - this needs an overhaul for R2
2097    o cleanup verification/*/code/GMREDI_OPTIONS.h
2098    o cleanup testreport
2099    
2100    checkpoint51o_post
2101    o bringing AD-related verif's up to date with genmake2
2102      - carbon/
2103      - global_ocean.90x40x15/
2104      - hs.94.1x64x5/
2105      - (front_relax/ )
2106    o (more) consistent directory structure for AD-related verif.'s
2107    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2108    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2109    o bug fix in find_alpha.F for MDJWF:
2110      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2111        change rho -> rho-rhoConst
2112      - replace call find_rho to find_rhonum
2113    o initialisation of rFlx extended to full array (required by TAF)
2114      and shifted to thermodynamics
2115    o removed PTRACERS.h in ptracers routine
2116    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2117    o Correcting initialisations for fVerU, fVerV.
2118    o helping TAF to recognize dependency on kUp for
2119      fVerU, fVerV
2120    o Replacing delZ by delR in pkg/ctrl/
2121    checkpoint51o_pre
2122    
2123    o undid all of cp51 pending some cleanups and discussion
2124    o added the [#include "AD_CONFIG.h"] statement to all files that need
2125       it for adjoint/tl #defines
2126     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2127     o removed tools/genmake since it no longer works
2128    
2129    checkpoint51n_post
2130    o modifications to make FREEZE flux visible to pkg/kpp
2131      - moved surfaceTendencyTice from pkg/seaice to main code
2132      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2133      - subroutine FREEZE now limits only surface temperature
2134        (this means new output.txt for global_ocean.90x40x15,
2135         global_ocean.cs32x15, and global_with_exf)
2136    o added surface flux output variables to TIMEAVE_STATVARS
2137    
2138    checkpoint51n_pre
2139    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2140    o added [#include "AD_CONFIG.h"] to all files that use the following
2141      defines:
2142      - ALLOW_ADJOINT_RUN
2143      - ALLOW_TANGENTLINEAR_RUN
2144      - ALLOW_ECCO_OPTIMIZATION
2145    
2146    checkpoint51m_post
2147    o incorporating changes to get TAMC/TAF working in genmake2
2148      - added new TAMC/TAF targets to the Makefile
2149      - various cleanups related to package handling
2150      - these changes should have no impact on the forward model
2151    
2152    checkpoint51l_post
2153    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2154     - faster algorithm for cal_addtime.F
2155     - higher precision arithmetic, where needed
2156     - pkg/exf *startdate variables changed from calendar date to
2157       model integration time
2158    
2159    checkpoint51l_pre
2160    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2161    o enable to apply restoring on S & T only in a latitude band.
2162    o update output (external_forcing_surf modif. change truncation errors)
2163       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2164    
2165    checkpoint51k_post
2166    o change default to: useNHMTerms=.FALSE.
2167     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2168       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2169     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2170        exp1, ideal_2D_oce
2171     - change data file of oceanic exp (leave the results unchanged for now)
2172       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2173    o set gravitySign automatically according to the vertical coordinate used
2174      (and change sign: back to "logical" value: +1 when R increases downward)
2175    o added an include barrier to the default CPP_OPTIONS.h and
2176      removed the #include "PACKAGES_CONFIG.h" from it
2177    o fix a bug in mom_fluxform (from chk51j_post)
2178    
2179    checkpoint51j_post
2180    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2181    o adjusted some flow directives (dynamics, thermodynamics)
2182    o added cubed-sphere case to test cost function
2183    o heckpoint_lev?_directives.h now include
2184      pkg-specific directives, whenever those are enabled.
2185    o Moving pkg-specific flow directives to corresponding pkg
2186      Moving pkg-specific differentiation list to corresponding pkg
2187      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2188      ---> conventions are
2189           - pkg_ad.flow
2190           - pkg_ad_diff.list
2191           - pkg_ad_check_lev?_dir.h
2192    
2193    checkpoint51i_post
2194    o merge of the branch-genmake2
2195      - knowingly breaks the older genmake
2196      - automatic generation of all ALLOW_${PKG_NAME} defines
2197      - new testreport supersedes older testscript
2198    o large number of package inclusion and header cleanups
2199    checkpoint51i_pre
2200    
2201    o new output for adjoin of global ocean vector invariant
2202    o fix for checkpoint of thermodynamic seaice and bulk_force
2203    o Steph gchem various cleanups
2204    
2205    checkpoint 51h_pre
2206    o fixed some single quotes
2207    o modify gchem pkg to be more versatile
2208    o modifications to clean up dic pkg
2209    o add pkg/cfc
2210    
2211    checkpoint51g_post
2212    o provide links for ARPACK and ADM*TLM
2213    o start removing verification/vero/
2214    o update AD-related stuff
2215      (in particular some IF-statements in model/src/ routines)
2216    o adding to verification/global_ocean.90x40x15/ adjoint of
2217      vector invariant setup
2218    
2219    checkpoint51f_post
2220    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2221    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2222      of tracer Green's fucntions for ocean inversion project.
2223    
2224    checkpoint51f_pre
2225    o Added on-the-fly spatial interpolation capability
2226        "USE_EXF_INTERPOLATION" to pkg/exf.
2227      - This is a temporary Cartesian-grid hack until
2228        the super-duper ESMF coupler becomes available.
2229      - See verification/global_with_exf/README for usage example.
2230      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2231        flags and modified pkg/seaice accordingly.
2232    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2233        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2234        non-local transport term.
2235    
2236    checkpoint51e_post
2237    o pkg/mom_vecinv:
2238      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2239      - add time-ave diagnostic of vorticity advection.
2240    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2241    o atmospheric geopotential: - include water vapor effect;
2242                                - use p^kappa in p* scaling.
2243    o land pkg: read initial state from files.
2244    o AIM : add stratospheric drag in the upper level
2245    
2246    checkpoint51d_post
2247    o change function ILNBLNK (=> last non-blank char.) to return zero
2248      (instead of the string length) when the string. char is empty
2249    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2250    o modif's to restore TAMC compatibility
2251      - avoid "_d" constructs in PARAMETER declarations
2252      - avoid interrupting lines by comment lines
2253    o Use cluster local disks for purely local I/O
2254      vs. globally visible disks needed for ctrl stuff
2255      (merged from ecco-branch)
2256      - new active_file_loc... and mdsio_..._loc routines
2257      - affected packages: autodiff, ctrl, grdchk, mdsio
2258    
2259    checkpoint51c_post
2260    o introducing integer flag debugLevel
2261      - debLevZero: suppress all output
2262      - debLevA: standard
2263      - debLevB: equivalent to current debugMode=.TRUE.
2264    o introducing pathname variable mdsioLocalDir for mdsio
2265      that can be specified at runtime
2266      (relevant for cluster I/O to local disk)
2267    `
2268    >>>checkpoint51b_post
2269    adjoint of ptracers
2270    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2271    o extended state in checkpoint_lev?, etc.
2272    o alternative ctrl/cost with tr1 or ptracer
2273    o new comlev1_bibj_ptracers
2274    o new ptracers.flow
2275    o made ptracers_forcing same as external_forcing_s
2276    o added verification for adjoint with ptracers
2277      - adm. grdchk fail so far
2278      - tlm. grdchk OK
2279      - checked tapelev/comlev recomputations: OK
2280    <<<checkpoint51b_pre
2281    
2282    checkpoint51a_post
2283    o added code for biogeochemistry package
2284      - new pkgs: dic, gchem
2285      - new subroutine in ptracers
2286    o modify code for biogeo packages
2287      - in model/src and pkg/ptracers
2288    
2289    checkpoint51
2290    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2291      - autodiff, ctrl, exf, grdchk, seaice
2292      kept separate packages
2293      - cost, ecco, obcs
2294    o updating verification/internal_wave, verification/lab_sea
2295      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2296    
2297    checkpoint50i_post
2298    o Preparing next differentiable checkpoint and sync
2299      of MAIN vs. ecco-branch
2300      - 1st step: this one is differentiable
2301      - 2nd step: next(! not this) checkpoint will have updated packages
2302                  from ecco-branch)
2303    
2304    checkpoint50h_post
2305    o new package "land": provide surface BC for AIM.
2306    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2307    o AIM: use true log-P extrapolation for near surface temp (= as in
2308        F.Molteni paper) ; update aim.5l_cs output.
2309    o New variable in PARM03 for more flexible pickups
2310    o somewhat cleaned package initialisation sequence for
2311      ctrl/ cost/ ecco/ in packages_... routines
2312    
2313    checkpoint50g_post
2314    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2315      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2316      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2317        made the default because of faster convergence than ADI
2318    
2319    checkpoint50f_post
2320    o exf totally restructured
2321      - replaced all exf_set_ routines by one generic exf_set_gen.F
2322        and made sure it's still differentiable
2323      - split exf_getffields.F into new exf_bulkformulae.F
2324      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2325      - updated adjoint/makefile and relevant verif. accordingly
2326    
2327    checkpoint50f_pre
2328     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2329          + change Evap over land. (update aim.5l_cs output)
2330     o added missing .cvsignores and made uniform across expts
2331     o changed configuration of tidal_basin_2d expt
2332     o added pkg/debug functions for tracing code in fatal crashes
2333     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2334     o new fn in pkg/monitor to stop model if solution grows too big
2335     o removed lots of single quotes from comments
2336    
2337    checkpoint50e_post
2338    o make KPP work with PTRACERS
2339     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2340       nearly a copy of kpp_transport_s
2341     - there is no analogue to SurfaceTendencyS, so I have to use
2342       gPtr(of the surface layer) instead
2343    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2344    checkpoint50e_pre
2345    
2346    checkpoint50d_post
2347    o change kpp output from multiple-record state files to single-record state
2348      files analogous to write_state.F
2349    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2350      analogous to the cg2d-related output.
2351    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2352      so that writing to internal file fn (with length 512) fails.
2353    checkpoint50d_pre
2354    
2355    checkpoint50c_post
2356    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2357    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2358    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2359    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2360    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2361    
2362    checkpoint50c_pre
2363    Merging from release1_p13:
2364    o bug fix for pkg/seaice dynamic solver
2365    o Added SEAICE_initialHEFF to pkg/seaice
2366    
2367    checkpoint50b_post
2368    o store u*,v* in gU,V instead of in guNm1,gvNm1
2369    o in order to put the momForcing out of the Adams-Bashforth:
2370      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2371      to timestep.F
2372    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2373    o re-generate output for highly sensitive test-exp:
2374       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2375    
2376    checkpoint50b_pre
2377    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2378    o corrected CPP option mismatch in exf_Bulk... functions for case
2379      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2380    
2381    checkpoint50a_post
2382    o Bug fix for merging between c50 and KPP.
2383      ikey was passed from thermodynamics to kpp_calc via
2384      common block rather than being recomputed in kpp_calc,
2385      in contradiction with new key itdkey.
2386      New key ikppkey created, and tamc.h headers updated.
2387    
2388    checkpoint50
2389    - 2nd step of merge with ecco-branch:
2390      merge changes in ecco-branch back into main trunk
2391    - bug fix in find_alpha
2392    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2393    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2394    - merged some sliced AD support routines
2395    
2396    checkpoint49
2397    merged from ecco-branch:
2398    o exf:
2399      - Enable initialisation of forcing fields to constant
2400        (runtime) values.
2401      - in exf_getffields.F
2402        Reduce i-/j-loop to interior domain, discarding overlaps.
2403        That also fixes wrong TAF-key computations for key_1, key_2
2404        with bulf formulae.
2405      - exf_init.F modify #ifdef for exf_init_evap
2406      - exf_getffieldrec.F, ctrl_getrec.F
2407        The following INT-usages are not safe:
2408          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2409          fldcount = int(fldsecs/fldperiod) + 1
2410        and were modified.
2411    o autodiff: checkpoint_lev...
2412      - updated storing for bulk formulae (some arrays were missing)
2413      - added state for seaice package
2414      - synchronized with main branch
2415    o DIVA:
2416      Modif.s in
2417      - the_main_loop.F
2418      - the_model_main.F
2419      and added cost_final_restore.F cost_final_store.F
2420      o With these changes, it is possible to fully separate
2421        the first forward run to compute the cost function (mdthe_main_loop)
2422        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2423        into separate model executions.
2424        This enables better tuning of DIVA to given queue sizes.
2425      o Loss of cost function value in consecutive DIVA runs is
2426        fixed by storing to 'costfinal' file.
2427      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2428        beginning/end of adjoint integration is accounted for.
2429      The current changes apply to TAF-1.4.26.
2430      TAF has one remaining bug, requiring one manual change
2431      (see MITgcm manual).
2432    o cal: synchronized between MAIN and ecco-branch
2433    
2434    checkpoint48i_post
2435    o Changes to restore differentiability of code w.r.t. previous tag
2436      (mostly adding new routines to make list and replacing
2437      pressure by totPhiHyd).
2438    o Updated and merged grdchk package
2439      - has both ADM and TLM checks
2440      - works for single- and multi-proc.
2441      - output cleaned
2442      - worked successfully for parallel DIVA
2443    o genmake:
2444      - Adding -platform=SP4
2445      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2446    o Modif. for DIVA:
2447      ctrl_unpack should not be called in intermediate DIVA interval.
2448      (similar thing would apply for active files such as
2449      tbar, sbar, psbar, which should not be reinitialised;
2450      only relevant for ecco-branch)
2451    
2452    checkpoint48h_post
2453    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2454    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2455    o Added SEAICE_initialHEFF to pkg/seaice
2456    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2457    
2458    checkpoint48g_post
2459    --- EOS:
2460    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2461      store total Potential in totPhyHyd for diagnostics & EOS.
2462    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2463    --- Pressure/geopotential gradient:
2464    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2465    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2466      ( changes results of global_ocean_pressure )
2467    o NLFS + z-coord.: add eta*Rho' contribution.
2468    o accurate phiHyd when using interface-W at the middle between 2 centers
2469     ( changes results of ideal_2D_oce )
2470    o includes r* 2nd term in potential gradient.
2471    
2472    checkpoint48f_post
2473    Merging from release1_p12:
2474    o Modifications for using pkg/exf with pkg/seaice
2475      - improved description of the various forcing configurations
2476      - added basic radiation bulk formulae to pkg/exf
2477      - units/sign fix for evap computation in exf_getffields.F
2478      - updated verification/global_with_exf/results/output.txt
2479    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2480      (SBO) core products, including oceanic mass, center-of-mass,
2481      angular, and bottom pressure (see pkg/sbo/README.sbo).
2482    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2483      to avoid negative values in shallow regions.
2484      - updated verification/natl_box/results/output.txt
2485      - updated verification/lab_sea/results/output.txt
2486    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2487    o Added useSingleCpuIO option (see PARAMS.h).
2488    o Updated useSingleCpuIO option in mdsio_writefield.F to
2489      work with multi-field files, e.g., for single-file pickup.
2490    o pkg/seaice:
2491      - bug fix in growth.F: QNET for no shortwave case
2492      - added HeffFile for specifying initial sea-ice thickness
2493      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2494    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2495      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2496    o pkg/seaice:
2497      - adjoint-friendly modifications
2498      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2499    
2500    checkpoint48e_post
2501    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2502    o dynamics: change definition of computational domain & adapt mom_fluxform
2503      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2504    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2505        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2506        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2507        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2508        inverted_barometer solid-body.cs-32x32x1
2509      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2510    
2511    checkpoint48d_post
2512    o in preparation for r*:
2513     a) use pre-computed gradient of hydrostatic potential:
2514        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2515     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2516        => affects results of glob_oce_pressure (different truncation error)  
2517      update output.txt of ideal_2D_oce & global_ocean_pressure
2518    
2519    checkpoint48d_pre
2520    o in preparation for r*:
2521      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2522      pass the 2 comp. of the grad. as arguments to momentum S/R.
2523      but for the moment, only used if it does not change the results.
2524    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2525    
2526    checkpoint48c_post
2527    Modifications in treatment of initial flux forcing controls
2528    to avoid extra storing of flux fields.
2529    
2530    checkpoint48c_pre
2531    o Added tidal_basin_2d experiment (currently 1D!)
2532    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2533    
2534    checkpoint48b_post
2535    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2536     (modification to pressure gradient not yet implemented)
2537    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2538      (for U & V) that are used for vertical advection of momentum.
2539    
2540    checkpoint48a_post
2541    o In preparation for r*, use temp. array to compute vertical transport
2542       in flux-form momentum pkg. => change results of few test-exp.
2543      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2544                        lab_sea, natl_box & plume_on_slope
2545    
2546    checkpoint48
2547    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2548    
2549    checkpoint47j_post
2550    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2551    o moved adexch from forward_step to addummy_in_stepping
2552    o added exch in ctrl_map_...
2553    o aveFreq.=0. at end of cost_final to avoid overwrite in
2554      reverse checkpointing loop
2555    o Yet more changes in gmredi:
2556      * adgmredi_calc_tensor
2557        avoiding all recomputation of gmredi_slope_limit
2558      * adgmredi_x/y/rtransport
2559        added flag for excessive storing to avoid recomp. of
2560        u/v/rtans, dTdx/y/z
2561        -> this is not really necessary and very memory-consuming
2562      * adgmredi_slope_psi:
2563        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2564      * gmredi_slope_limit
2565        re-activated full calculation of taperfct for case 'ac02'
2566    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2567    
2568    checkpoint47i_post
2569    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2570    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2571      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2572    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2573    o gmredi: fix few bugs.
2574    
2575    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2576    This will be a good checkpoint to plug into the ecco-branch.
2577    o few modif.'s to get latest version adjointed
2578      (mainly kick out code in ini_linear_phisurf)
2579    o modif's to run adjoint with exactConserv
2580    o case GM_BOLUS_ADVEC should be cleaned
2581      S/R gmredi_slope_psi should be cleaned
2582    o verification/carbon now has exactConserv=.TRUE.
2583    
2584    checkpoint47g_post
2585    o time-average AIM output: becomes independent from statvars time-average
2586      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2587    o After TAF bug fix:
2588      Tested adjoint of gmredi package.
2589      Tests were done with checkpoint47 rather than with latest
2590      checkpoint47f_post since the latter is broken for the adjoint
2591      verification/carbon/ contains both ADM and TLM gradient checks.
2592    Here they are, before they get changed/lost/stolen.
2593    Mostly modif.'s to fix numerical sensitivities.
2594    Gradient checks OK for
2595    - GM_taper_scheme:
2596      * clipping
2597      * ac02
2598      * linear
2599      * glw91
2600      * dm95
2601      * ldd97
2602    - GMREDI_OPTIONS:
2603      * GM_VISBECK_VARIABLE_K
2604      * GM_NON_UNITY_DIAGONAL
2605      * GM_EXTRA_DIAGONAL
2606      * GM_BOLUS_ADVEC
2607    in conjunction with data.gmredi parameters to be checked in
2608    in a few minutes under verification/carbon/code/
2609    
2610    checkpoint47f_post
2611    Merging from release1_p10:
2612    o modifications for using pkg/exf with pkg/seaice
2613      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2614        and SEAICE_EXTERNAL_FLUXES
2615      - pkg/exf CPP options EXF_READ_EVAP and
2616        EXF_NO_BULK_COMPUTATIONS
2617      - usage examples are Experiments 8 and 9 in
2618        verification/lab_sea/README
2619      - verification/lab_sea default experiment now uses
2620        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2621    
2622    checkpoint47e_post
2623    o created a tag prior to creating a branch
2624    
2625    checkpoint47d_post
2626    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2627      at the bottom boundary had an erroneous half slip boundary condition
2628    o added bottom drag and no slip boundary condition capabilities to
2629      oceanic pressure coordinates code
2630    o added new verification experiment global_ocean_pressure, this experiment is
2631      also described in the tutorial section of the manual
2632    checkpoint47d_pre
2633    
2634    checkpoint47c_post
2635    o Added a verification experiment for a global cubed-sphere ocean run
2636      -  verification/global_ocean.cubed32x32x30
2637      -  uses pkg/therm_seaice and pkg/bulk_forcing
2638    
2639    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2640    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2641      when using P-coordinate; only implemented for atmospheric config.
2642    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2643      NOTES: requires option NONLIN_FRSURF to be "#define".
2644    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2645    
2646    checkpoint47b_post
2647    Merging from release1_p9:
2648    o pkg/seaice
2649      - removed GOTO's and added taf directives
2650      - double precision constants to reduce the g77 (Linux)
2651        to F77 (SGI) differences reported in release1_p8
2652    o tools/genmake
2653      - added SGI options
2654    o verification/testscript
2655      - updated to that of checkpoint47a_post
2656    o verification/global_ocean.90x40x15/input/eedata
2657      - modified for SGI f77 compatibility
2658    o verification/lab_sea
2659      - added description of sea-ice model
2660      - added missing matlab routines
2661      - added test of thermodynamics parallelization
2662    
2663    checkpoint47a_post
2664    o new pkg: aim_v23
2665     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2666       for now, keep the same surface forcing as before.
2667     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2668     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2669     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2670    o add diagnostic of surface correction term in monitor output
2671    
2672    o bulk_force and therm_seaice
2673    - Two packages:  bulk_force (Bulk forcing)
2674      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2675    - Earlier integration from Stephaine Dutkiewicz
2676      and Patrick Heimbach.
2677    - Two ifdef statements for compile time,
2678       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2679    
2680    checkpoint47
2681    differentiable version of checkpoint46n_post
2682    o bug fix in quasihydrostaticterms
2683    o * "clean" adjoint code (in terms of extensive recomputations)
2684        can now be obtained for all GMREDI options (i.e. for
2685        - GM_VISBECK_VARIABLE_K
2686        - GM_NON_UNITY_DIAGONAL
2687        - GM_EXTRA_DIAGONAL
2688        - GM_BOLUS_ADVEC )
2689      * However, wrong gradient check problem remains unsolved.
2690      * New CPP options have been introduced for different
2691        tapering schemes
2692    o external_fields_load now part of differentiation list
2693    o pressure needs multiple storing;
2694      would be nice to have store_pressure at beginning or
2695      end of forward_step, e.g. by having phiHyd global (5-dim.)
2696      (NB: pressure is needed for certain cases in find_rho,
2697      which is also invoked through convective_adjustment).
2698    o recomputations in find_rho for cases
2699     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2700    o #define ATMOSPHERIC_LOADING should be differentiable
2701    o ini_forcing shifted to begining of initialise_varia
2702    o Incorporating QNVS line search routines into MITgcm
2703      (this is separate code, and therefore not under pkg)
2704      lsopt/, optim/
2705    o Updated verification/carbon/
2706      - #define GM_VISBECK_VARIABLE_K
2707      - GM_taper_scheme    = 'ldd97'    
2708    
2709    checkpoint46n_post
2710    Merging from release1_p8:
2711    o verification/natl_box:
2712      updating new external_fields_load routine
2713    o New package: pkg/seaice
2714      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2715      The sea-ice code is based on Hibler (1979-1980).
2716      Two sea-ice dynamic solvers, ADI and LSR, are included.
2717      In addition to computing prognostic sea-ice variables and diagnosing
2718      the forcing/external data fields that drive the ocean model,
2719      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2720      The implied surface heat flux is then stored in variable
2721      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2722      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2723      non-local transport term.  Because this call precedes model
2724      thermodynamics, temperature under sea-ice may not be "exactly" at
2725      the freezing point by the time theta is dumped or time-averaged.
2726      N.B.: fairly large differences in accuracy occur across
2727            different platforms/compilers; comparison between
2728            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2729            generated output gives:
2730       T           S           U           V
2731      C D M    c        m  s        m  s        m  s        m  s
2732      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2733      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2734      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2735    
2736      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2737    o GAD:
2738      - generated new common blocks to account for call of
2739        same gad routines with differing traceridentities
2740        (needed to modify tracerIdentity indices in GAD.h)
2741      - generated separate common blocks for case useCubedSphereExchange
2742        (Department of Futurology)
2743      - parameter lists to gmredi_?transport: added tracerIdentity
2744      - added new key indices to tamc.h
2745    o external_fields_load:
2746      - added this routine to TAF list
2747      - needed to make some common blocks global and additional storing
2748        along the same lines as exf package (checkpoint_lev?_directives.h)
2749    o exf:
2750      updated external forcing package
2751      - bug fixes carried over from ecco-branch
2752        (missing OBCS_OPTIONS.h in two routines)
2753      - enable easy to use "no forcing".
2754      - added exf I/O for atmospheric loading
2755      - added exf I/O for runoff data
2756      - transfered scaling between exf <-> MITgcm to exf namelist
2757    o Adding new verification experiment global_with_exf.
2758      This verification experiment is almost identical to the
2759      global_ocean.90x40x15 experiment, except that it uses
2760      the exf (and cal) package instead of the
2761      external_fields_load routine (cf README file).
2762    
2763    checkpoint46m_post
2764    o modified testscript to return -- when there are no lines of "%MON" output
2765    o added new flag "quasiHydrostatic" for QH mode
2766      and new routine quasihydrostaticterms()
2767    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2768      New routine: mom_u_coriolis_nh()
2769    o fixed sign of non-hydrostatic metric terms in u and v equations.
2770      Depend on correct sign of gravitySign.
2771    o added work.pc* to .cvsignore in aim directories using ifc
2772    o introduced flag for controllin non-hydrostatic metric terms
2773    o removed gravitySign from PARM04
2774    o switched to g77/ifc from pgf77 in aim experiments
2775    
2776    checkpoint46l_post
2777    o made convective adjustment work with pressure coordinates:
2778     - changed the direction of k-loop in convective_adjustment.F for the
2779       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
2780     - adjusted the reference pressure k-index in convective_adjustment.F
2781     - adjusted the convection condition in convect.F (in analogy to
2782       calc_ivdc.F)
2783     - convective_adjustment no longer computes anything on the halos
2784     - removed the warnings about negative salinity from find_rho.F and
2785       find_alpha.F; instead the new routine look_for_neg_salinity, called
2786       at the beginning of find_rho, find_alpha, and find_beta, does a
2787       check of the entire slice, if CPP-option
2788       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
2789    checkpoint46l_pre
2790    
2791    checkpoint46k_post
2792    o fixed the verification/global_ocean.90x40x15 experiment:
2793     - new bathymetry (the world according to A., JMC, and M.)
2794     - new initial fields and forcing fields (*.bin files)
2795     - new POLY3.COEFFS (for the next release one should switch to a full
2796       equation of state: JMD95P or MDJWF)
2797     - fixed several errors and redundancies in the data file
2798     - experiment uses looped cells
2799     - added matlab directory with diagnostic scripts for plotting of output
2800    
2801    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
2802     - read AIM physics parameters from a file (data.aimphys)
2803     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
2804    
2805    checkpoint46j_post
2806    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
2807    o move wVel computation at the end of the time step, in S/R integr_continuity
2808    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
2809    o update timeave pkg for wVel diagnostic.
2810    checkpoint46j_pre
2811    
2812    checkpoint46i_post
2813    o Clean up AIM package (and keep the results unchanged):
2814      include CPP_OPTION and use IMPLICT NONE in all routines ;
2815      declare all the variables _RL ; use _d 0 for all numerical constants.
2816      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
2817    
2818    checkpoint46h_post
2819    o cleaned up the use of rhoNil and rhoConst.
2820      - rhoNil should only appear in the LINEAR equation of state, everywhere
2821        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
2822        and the dynamical equations are all divided by rhoConst
2823    o introduced new parameter rhoConstFresh, a reference density of fresh
2824      water, to remove the fresh water flux's dependence on rhoNil. The default
2825      value is 999.8 kg/m^3
2826    o cleanup up external_forcing.F and external_forcing_surf.F
2827      - can now be used by both OCEANIC and OCEANICP
2828    checkpoint46h_pre
2829    
2830     Added code to convert surface volume flux (fresh water) into
2831     a mass flux when using P coordinates in the ocean (OCEANICP).
2832     Note: It assumes you have set rho0=rhoConst=density of fresh water.
2833    
2834    checkpoint46g_post
2835    o Include a new diagnostic variable phiHydLow for the ocean model
2836      - in z-coordinates, it is the bottom pressure anomaly
2837      - in p-coordinates, it is the sea surface elevation
2838      - in both cases, these variable have global drift, reflecting the mass
2839        drift in z-coordinates and the volume drift in p-coordinates
2840      - included time averaging for phiHydLow, be aware of the drift!
2841    o depth-dependent computation of Bo_surf for pressure coordinates
2842      in the ocean (buoyancyRelation='OCEANICP')
2843      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
2844        Theta, Salinity, and Pressure in the parameter list. This routine is
2845        presently contained in find_rho.F. This routine does not give the
2846        correct density for 'POLY3', which would be a z-dependent reference
2847        density.
2848    o cleaned up find_rho
2849      - removed obsolete 'eqn' from the parameter list.
2850    o added two new verification experiments: gop and goz
2851      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
2852    checkpoint46g_pre
2853    
2854    checkpoint46f_post
2855    o Enable tangent linear (forward mode) gradient checks:
2856      - extended active file handling to g_... files
2857      - added TANGENT_SIMULATION to theSimulationMode
2858      - extended grdchk package accordingly
2859    o added tangent linear setup in verification/carbon/code_ftl
2860    o added adjoint setup in verification/front_relax/code_ad
2861    
2862    checkpoint46e_post
2863    o Added new equation of state -> MDJWF
2864      - EOS of McDougall et al., 2002, JAOT, submitted
2865      - caveat: the equation of state is only valid for a smaller (more
2866        realistic?) range of values than JMD95P/Z and UNESCO
2867      - added masks to the calculation of pressure in store_pressure
2868      - added more check values for density in check_eos (ini_eos.F), some of
2869        the old check values are out of the range of the MDJWF-eos, so don't
2870        expect perfect matches for those
2871    checkpoint46e_pre
2872    
2873    checkpoint46d_post
2874    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
2875      'OCEANICP', also initialised field pressure correctly in ini_eos in the
2876      case of pressure coordinates. eosType='JMD95Z' in
2877      combination with buoyancyRelation='OCEANICP' now causes an error.
2878    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2879      in find_alpha/beta.
2880    checkpoint46d_pre
2881    
2882    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2883      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
2884    
2885    checkpoint46c_post
2886    o Changes necessary for ocean in p-coordinates
2887     -  Added new buoyancy relation = 'OCEANICP'
2888     -  Added new parameters = gravitySign (this used to be contained inside
2889        the factor dRdZ which I added when we first switched to R coordinates).
2890     X GM/Redi is not compatible (yet)
2891     X bottom drag and no-slip need to be debugged.
2892    checkpoint46c_pre
2893    
2894    checkpoint46b_post
2895    o Added new equation of state -> JMD95Z and JMD95P
2896      - EOS of Jackett and McDougall, 1995, JAOT
2897      - moved all EOS parameters into EOS.h
2898      - new routines ini_eos.F, store_pressure.F
2899    o Added UNESCO EOS, but not recommended because it requires
2900      in-situ temperature (see JMD95)
2901    o Modified formatting for knudsen2.f in utils/knudsen2 and added
2902      unesco.f to be used with POLY3
2903    checkpoint46b_pre
2904    
2905    checkpoint46a_post
2906    o Added (atmospheric) pressure loading
2907      - new field in FFIELDS.h, etc...
2908      - new cpp flag ATMOSPHERIC_LOADING
2909    o Changed hFacC to _hFacC in calc_phi_hyd.F
2910    o Added SHORTWAVE_HEATING to some files for consistency
2911    checkpoint46a_pre
2912    
2913    checkpoint46
2914    further merges from release1_p5
2915    o new ctrl package
2916      - adopted from ECCO environment to enable optimization
2917      - added Eliassen Palm fluxes to controls
2918    o added Eliassen Palm flux controls to gradient check package
2919    o cost package
2920      - Compatible with new ctrl package
2921      - added Eliassen Palm cost hooks
2922      - modif's of existing cost functions
2923    o Adjoint-related bug fixes in kpp:
2924      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
2925      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
2926    o autodiff package
2927      - flow directives:
2928        + new for S/R do_the_model_io
2929        + enhanced for S/R checkpoint
2930        + new gmredi.flow
2931      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
2932        disable adcommon.h/g_common.h by default.
2933      - fixed problem for adjoint of global_max
2934    o modified verification/carbon/
2935    o New setup for adjoint of global_ocean
2936    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
2937    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
2938    o incorporated hooks for sponge layer code (external_forcing.F)
2939    
2940    checkpoint45d_post
2941    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
2942  o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S  o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
2943    (affects plume_on_slope "cg2d" output)    (affects plume_on_slope "cg2d" output)
2944    o add new parameter deltaTfreesurf for free-surface time stepping
2945    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
2946  o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B  o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
2947  o change phiMin in exp1 (to agree with documentation)  o change phiMin in exp1 (to agree with documentation)
2948  o add new flags:  o add new flags:

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