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revision 1.125 by jmc, Mon Jan 27 21:42:19 2003 UTC revision 1.830 by mlosch, Tue Jun 5 10:46:27 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    
12    checkpoint59c
13    o add S/R and diagnostics for oceanic mixed-layer depth
14    o move GMRedi call after all vertical mixing schemes (including KPP)
15    o pkg/thsice:
16     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
17      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
18    o pkg/obcs:
19     - bug fix for balance code
20    o pkg/seaice:
21      - allow values of SEAICE_elasticParm > 1
22      - add new parameter SEAICE_evpTauRelax as an alternative
23        to SEAICE_elasticParm
24      - make lsr boundary conditions free slip (by default), changes result
25      - add code for no slip boundary conditions for lsr
26      - set minimum of zeta to zero (and not 4e8) (changes results)
27      - add a cap on AREA after advecting AREA if seaice_growth is not called
28    o change calculation of Visbeck K:
29      - no longer depend on tapering scheme; instead, compute slope (limited
30        by GM_maxSlope). this is equivalent to what was comuted before with
31        clipping or linear tappering.
32      - fix vertical averaging (wrong by 1/2 level)
33      - leave the old version (but will not be maintained) within
34        #ifdef OLD_VISBECK_CALC / #endif
35      - update output of exp. ideal_2D_oce
36    o change error catch in calc_r_star to improve vectorization
37    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
38      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
39    o adjoint:
40      Re-organized adjoint checkpointing according to Matt Mazloff
41      (but with modifs/completions/cleanups)
42      Storing is now bundled into large arrays to optimized I/O
43      (and second step in cleanup of the_main_loop)
44    
45    checkpoint59b
46    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
47      - export/import (between ocean & coupler) fields needed for ocean DIC.
48    o pkg/seaice:
49      - get rid of three more exchanges seaice_calc_viscosities (required
50        different loop boundaries in seaice_lsr and seaice_ocean_stress)
51      - bug fix in seaice_ocean_stress (update of lab_sea required)
52      - reduce loop boundaries to necessary minimum also in seaice_evp
53      - go back to the old way of computing deltaC/Z as the adjoint likes that
54        better
55    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
56      passive tracer to an Age Tracer) + update output.txt
57    o pkg/exf:
58      - implement A-grid / C-grid selection for wind-stress input files.
59      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
60      for now, in exf_bulk_largeyeager04.F only :
61      - change implementation for case where windspeed + 2. components wind-stress
62        are read-in. AND use rhoConstFresh to convert evap.
63    o pkg/seaice:
64      - use correct EXCH_UV for wind-forcing (on A-grid).
65      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
66        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
67    o pkg/exf:
68      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
69      EXF_INTERPOLATION:
70      - merge global_with_exf/code version of exf_interp_read.F
71        to the main code ;
72      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
73        reading the file ; Important: This options needs to be defined to recover
74        previous code.
75        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
76      - no longer loose real*8 precision along the way when using exf_iprec=64.
77    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
78      - change discretisation of evp-solver in order to avoid another exchange
79        (changes lab_sea) and clean up a little
80      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
81        help the adjoint (this also changes the results slightly)
82      - add a few "_d 0" where they had been missing in seaice_evp.F
83      - cleaning up: remove unused seaice_calc_rhs.F
84    o pkg/exf: some cleaning-up:
85      - change various "constants" into runtime parameters
86      - cleaned-up Large&Yeager04 routine which should eventually
87        replace exf_bulkformulae.F (changed names of S/R and CPP)
88        and merged various ALLOW_ATM_WIND options
89     only used with thsice pkg (in thsice_get_exf.F):
90      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
91        which are used when useStabilityFct_overIce=TRUE (= the default)
92      - change default values of ice & snow emissivity and scale downward LW
93        by ice & snow emissivity.
94    o pkg/thsice:
95     fix few little problems, in thsice_calc_thickn.F:
96      - growth vertically (and not laterally) if iceFrac == iceMaskMax
97      - melt only laterally if hIce < hThinIce (as the comments say)
98      and in thsice_extend.F:
99      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
100      - start to form ice as soon as the minimum ice-volume is reachable.
101     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
102      and cpl_aim+ocn
103    o pkg/kpp
104     - move computation of surface related input fields to KPP into a new
105       subroutine kpp_forcing_surf.F
106     - remove wrong (within bi,bj loops) EXCH calls.
107     - little cleaning (add argument myThid in last position, cvs header ...)
108     - for now, fix conservation problem by exchanging KPPviscAz (may not
109       be the best fix)
110    o pkg/seaice
111     - check for inconsistent evp parameter/cpp-flag combination
112     - remove leftover errIO flat for obsolete name list error handling
113    o OpenAD
114     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
115    
116    checkpoint59a
117    o pkg/seaice: some parameter clarifications and a little bit of clean up
118    o pkg/thsice: rename run-time parameters:
119       himin       -> hIceMin
120       himin0      -> hThinIce
121       hihig       -> hThickIce
122       i0          -> i0swFrac
123       transCoef   -> bMeltCoef
124       frac_energy -> fracMelting
125      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
126       with default values (for now) that do not change the results.
127      remove old version of thsice vars advection in pkg/seaice.
128    o in FFIELDS.h:
129      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
130      - make pLoad & sIceLoad always available (but still only used if
131         ATMOSPHERIC_LOADING is #define).
132    o pkg/kpp: replaced _KPP_RL with _RL
133    o bug fixes for vertical diffusivity computations when both KPP and
134        3D diffusivity arrays are used.
135    o pkg/seaice: fix bug in evp solver, while doing that
136      - change (improve?) discretization of stress computations for both
137        cgrid-lsr and evp solver
138      - add a new routine to compute strain rates
139      - the above changes lab_sea results
140      - add no slip conditions for evp solver (off by default), lsr-version
141        may follow
142      - fix exchange for shear at Z-points (does not change lab_sea)
143      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
144        (to force the user to pick a time step since there is not "safe" way
145        of choosing it)
146      - add principal stress diagnostics
147      - rearrange fields for evp a little to avoid having to call a: too many
148        exchanges and b: exchanges for stress trensor components which we do
149        not have.
150      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
151        of evp, complete rewrite for lsr case (latter is does not yet work
152        in all cases)
153    o pkg/kpp: add code to have mixing in shelf ice caverns
154      - add myThid to all kpp routines (long overdue)
155    
156    checkpoint59
157    o pkg/exf:
158      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
159        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
160      - move exf header files from lower_case.h to UPPER_CASE.h ;
161        add missing cvs Header & Name
162      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
163      - add namelist param. selectStressGridPosition, exf_monFreq
164      - retire many _CLIM routines, and remove data.exf_clim
165        + params moved to data.exf
166        + climsst, climsss now handled by exf_set_gen, i.e.
167          climss?period=0 refers to constant field,
168          climss?period=-12 to monthly forcing
169      - split up namelists in data.exf
170    o pkg/seaice:
171      - remove seaice_exch and seaice_exch_uv
172      - remove superfluous exchange of theta
173      - add myThid to seaice_budget_ocean/ice
174      - add new interface for atmospheric wind forcing (C-grid only)
175        + new routine
176        + two new field (taux, tauy for stress over ice)
177        + removed one global field (DAIRN) for C-grid case only
178    o pkg/thsise
179      - 2nd set of modifs for thsice adjoint in conjunction with exf
180    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
181    
182    checkpoint58y_post
183    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
184      vertical diffusivity, similar to that in MOM4; turned on using
185      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
186      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
187    o Added capability for 3D specification of background vertical diffusion
188      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
189      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
190      "data" file that contains the 3D vertical diffusivity coefficients.
191    o ice dynamics (pkg/seaice) with thsice thermodynamics:
192      - add code within pkg thsice to advect & diffuse sea-ice fields
193      similar to (and will replace) what has been added in  seaice_advdiff.F,
194      but: - conserving Mass, Heat & Salt.
195           - better when using non-linear advection scheme (not yet fully tested)
196           - can also be used in atmospheric set-up (for now, only the diffusion).
197    
198    checkpoint58x_post
199    o IO option for global-file compact format:
200      - add options when generating topology (utils/exch2/matlab-topology-generator)
201      - add I/O capability (pkg/mdsio).
202      - adapt utils/matlab/rdmds.m to read this format.
203      for now long-line format not yet supported by pkg/mdsio (& exch2).
204    o shelfice: add a few diagnostics
205    
206    checkpoint58w_post
207    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
208      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
209      (and replace horiVertRatio in NH code).
210      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
211                         and tutorial_plume_on_slope (sensitive to truncation)
212    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
213      directly to drive seaice model (C-grid only)
214    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
215     - reintroduce computation of wind from stress,
216     - compute tau (in exf_bulkformulae.F) from windstress averaged to
217       mass points to avoid tau = 0
218     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
219    o rdmnc.m: make it work with "global" files created with gluemnc
220    o rdmnc.m : some improvements in dealing with singleton dimension
221      (tested on all testreport mnc output files).
222    o genmake2: disable pkg/profiles if netcdf test fails.
223    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
224    o move call to cal_readparms up to make calendar parameters/variable available
225      to all packages
226    
227    checkpoint58v_post
228    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
229      useDynP_inEos_Zc tested.
230    o pkg/exf: changes to properly interpolate/mask/scale initial fields
231    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
232      and portions thereof.  See read_cs.txt for description and examples.
233    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
234      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
235      following the great-circle arc between those 2 points.
236    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
237      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
238    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
239     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
240     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
241     - still needs work (not working with some options ; efficiency to improve)
242       and serious testing.
243     - use this scheme for temperature & salinity in 2 advection test exp.:
244       advect_xy & advect_xz, respectively.
245    
246    checkpoint58u_post
247    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
248    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
249    o testreport: add option "-skipdir" to skip some test.
250    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
251      momentum calculation.
252    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
253    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
254      remove checkpoint.F and the_correction_step.F (no longer used);
255      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
256    o add option (linFSConserveTr) to correct for tracer source/sink due to
257      Linear Free surface
258    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
259    o pkg/thsice: fix reading mnc-pickups
260    
261    checkpoint58t_post
262    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
263    o pkg/mdsio:
264     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
265       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
266       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
267     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
268     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
269       either MDS_READ_FIELD or MDS_WRITE_FIELD )
270     - new S/R (to replace MDSWRITEMETA), which allows to write more
271       informations (variable names, time ...) to meta files.
272     - modify rdmds.m to give back the meta file content.
273    o pkg/diagnostics: change vertical interpolation to be safer, and more
274       flexible (define p-levels to interpolate to in data.diagnostics);
275      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
276       diagnostic pointer.
277    o pkg/seaice: more cleaning up of seaice_growth, added many comments
278    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
279    o fix multi-category seaice:
280     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
281       SEAICE_MULTICATEGORY
282     - fix short wave heat flux
283    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
284       and allow to use EVP solver. Change forward lab_sea: test both EVP
285       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
286    o Initial check-in of lab_sea adjoint
287      (very similar to natl_box_adjoint/code_seaice)
288      * used C-grid and EVP solver
289      * used KPP, GM/Redi
290      * uses inAdExact=.TRUE.
291      * gradient checks fail for both ADM and TLM
292        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
293        f.d. gradients actually seem more problematic than ADM, TLM gradients;
294        issue is related to forward mismatch between g77 an ifort
295    o pkg/seaice: overhaul of thermodynamics
296     - growth.F and groatb.F are replaced by new routine seaice_growth.F
297     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
298     - move a few global fields out of SEAICE.h into seaice_growth.F and
299       make them 2D (FICE/QNETO/ ...)
300     - remove FO (it is the same as QNETO)
301     - introduce a few local fields to avoid modifying external fields such
302       as atemp, etc.
303    
304    checkpoint58s_post
305    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
306      changed exf_set_gen.F so that
307        genperiod=0 means input file is one time-constant field and
308        genperiod=-12 means input file contains 12 monthly means
309    o CG2D: use pre-computed solver main-diagonal (stored in common block);
310      this affects truncation error ; generate new output file for exp. which
311      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
312        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
313        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
314        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
315        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
316        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
317    o start implementation of deep-atmosphere and anelastic formulation
318    o verification: remove 2nd copy of input files and use script "prepare_run"
319      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
320    o mom_common/vecinv/fluxform: fix a few initialisation isssues
321    o profiles: fix for multithreaded case
322    
323    o diagnostics: rename few diags:
324      s/'PRESSURE'/'RCENTER '/g
325      s/'TICE    '/'oceFreez'/g
326      s/'TAUX    '/'oceTAUX '/g
327      s/'TAUY    '/'oceTAUY '/g
328      s/'SWFLUX  '/'oceQsw  '/g
329      s/DIFx/DFxE/g
330      s/DIFy/DFyE/g
331      and add few ocean-forcing diagnostics:
332      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
333    o modifications to pkg/seaice/growth.F and budget.F, which change results of
334      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
335      as actual snow thickness.  It now refers everywhere to effective snow
336      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
337    
338    checkpoint58r_post
339    o modifications to pkg/seaice/growth.F, which change results of
340      lab_sea experiment: fixes pertain to melting snow over open water, to
341      masking EVAP under sea ice, and to using the correct AREA variable for
342      computations of EVAP, PRECIP, HSNOW, and GHEFF
343    o add ability to read bathy, salt, and theta using MNC (off by def)
344    o add flooding algorithm and advection of HSNOW for pkg/seaice;
345      both are turned off by default and do no change any results
346    o seaice advection with pkg/thsice: a step toward the use of non-linear
347      advection scheme, but #ifdef or commented out for now (requires more EXCH).
348    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
349      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
350      in natl_box (affects results @ truncation level: update output.txt)
351    o multi-threading and IO:
352      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
353      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
354        (needed to work with SingleCpuIO): tested in all verif. exp.
355    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
356      affects the results (but none of the verification test uses this scheme).
357    o Adding some pkg/diagnostics capability to pkg/seaice
358      (will certainly be subject to changes)
359    o ctrl: adding new control variables:
360      lwflux, lwdown, evap, snowprecip, apressure, runoff
361    
362    checkpoint58q_post
363    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
364      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
365      high_res_cube configuration by 4% on Columbia.
366    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
367      add (in global_with_exf/code) a version of EXF_INTERP_READ without
368      dynamical allocation (seems to work in multi-threaded).
369    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
370      single CPU io) so that TAF does not have to see EESUPPORT.h
371    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
372    
373    checkpoint58p_post
374    o obcs: stop if obcs is used with useCDscheme = .true.
375    o shelfice:
376     - fix a sign error so that no slip at shelfice interface works
377     - remove stop for combination non-hydrostatic code and shelfice. That does
378       not mean, that the results are correct, but at least they are numerically
379       stable
380    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
381    o added adjoint exch routined for all exch*3d* routines
382      and updated flow directives
383    
384    checkpoint58o_post
385    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
386      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
387    o change controling S/R for writing pickup file (new S/R do_write_pickup)
388      and clean-up reading/writing of pickup files.
389    o fix local version of read/write pickup (NH part) in rotating_tank/code
390    o simplify EXCH interface:
391     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
392     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
393    o added the regrid package
394    o shelfice:
395     - add a simple boundary layer scheme to reduce noise
396     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
397    
398    checkpoint58n_post
399    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
400       local variable (not in common block).
401    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
402      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
403      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
404        to work with SingleCpuIO.
405    o add "_d 0" to real constant of pkg/cfc subroutines ;
406       update exp. cfc_exemple & tutorial_cfc_offline output files.
407    o multi-threading and IO:
408      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
409        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
410      - barrier before and after reading.
411      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
412      - avoid using MDS_WRITELOCAL for LAND pkg output.
413      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
414        common-block variables ; Allows multi-threading with master-thread IO.
415    o change default MAX_NO_THREADS from 32 to 4 ;
416      and stop cleanly when MAX_NO_THREADS is too small.
417    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
418    
419    checkpoint58m_post
420    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
421       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
422    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
423       keep global_ocean.90x40x15 (for AD testing) with former secondary test
424       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
425    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
426        add MITgcm_tutorials (= code + all the tutorials)
427    o ecco, option to compute cost for total ssh (mean+anom)
428    o consistent with addition of ptracer and ssh in pkg/profiles
429    o profiles: adding ptracer and ssh
430    o testreport: change multi-test output-file name
431      (from output.txt.{name} to output.{name}.txt)
432    o profiles: now ok for mutli-tiles case
433    o seaice: add 4 parameters for different advection schemes for area,
434      (effective) seaice thickness, enthalphy, and snow height. Their default
435      is the standard parameter SEAICEadvScheme
436    o calc_gw:
437     - add cosFacU in zonal viscous flux (harmonic.visc.).
438     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
439       of tutorial_plume_on_slope.
440    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
441    o calc_gw: true flux-form, account for horizontal grid spacing.
442      update rotating_tank results, but not plume_on_slope (affected at
443      truncation level, 11 digits).
444    
445    checkpoint58l_post
446    o calc_gw:
447     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
448     - remove side-drag for now (need to fix it); update plume_on_slope results.
449     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
450    o commit code to make SST/SSS weights spatially variable
451      (based on either variable in-situ or variable initial T/S weights)
452    o pkg/ecco:
453      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
454        now based on horizontally varying weights wthetaLev, wsaltLev
455      * cost_averagesflags now returns year indices in addition to day, month
456      * sflux balance is performed on annual basis
457        (sflxumm, sfluxmm2, bal_sfluxmm)
458      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
459        including separate counting and multipliers
460    o pkg/rbcs
461      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
462    
463    checkpoint58k_post
464    o testreport:
465     - always build in dir. "build" (if not there, mkdir build instead of building
466       & running in input)
467     - run in dir run (if it exists), in build otherwise.
468     - call prepare_run (if input/prepare_run exists)
469     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
470    o pkg/exf modifications to interpolation and rotation routines for more
471       reasonable treatment of North Pole singularity: for tracers North Pole
472       value is set to northernmost zonal-mean value, for zonal velocity it is
473       set to zero, and for meridional velocity it is set to northernmost value.
474    o pkg/exf/exf_check_range.F
475     - add tile index to diagnostics and move stop statement to the very
476       end of the routine.
477    o pkg/diagnostics: (diagnostics_main_init.F)
478      define title of isomorphic variables according to the current config.
479    o pkg/thsice with pkg/seaice dynamics:
480    - fix domain of computation (interior only, required for exf) and do exchanges
481    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
482    o towards a standard way of dealing with multi-threading in MONITOR
483      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
484    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
485       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
486    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
487    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
488    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
489       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
490    o tracer advection:
491     - clean-up and simplify calc_common_factors.F
492     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
493       advection subroutine (but still not used within DST advection S/R)
494    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
495    
496    checkpoint58j_post
497    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
498      from file (collects calls previously in FORWARD_STEP)
499    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
500    o adjoint store dir. adjusted accordingly
501    o genmake2
502      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
503    
504    checkpoint58i_post
505    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
506      on wind stress (SEAICEstressFactor defaults to 1.)
507    o Total number of Timers is finite (<=40): comment out 2 non-essential one
508      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
509    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
510      on CS-grid: no longer loosing mass.
511    o exf & curvilinear-grid: no longer modify longitude xC & xG.
512    o pkg/ggl90: fix sloppy output and fix a bug
513    o pkg/seaice: added SEAICEuseEVPpickup parameter
514      - Set to false in order to start EVP solver with
515        non-EVP pickup files when using SEAICEuseEVP
516      - fix sign error in diffusion in seaice_calc_rhs
517    
518    checkpoint58h_post
519    * Modifications for bottom topography control
520      o replace hFacC by _hFacC at various places
521      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
522      o add non-self-adjoint cg2d_nsa
523      o update autodiff support routines
524      o re-initialise hfac after ctrl_depth_ini
525      o works for 5x5 box, doesnt work for global_ocean.90x40x15
526    * Adding verification for 5x5 box (4-layer) bottom topography control
527    
528    checkpoint58g_post
529    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
530       used for mean seasonal cycle, mean diurnal cycle); add an example
531       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
532    o pkg/ggl90:
533      - add parameter (minimum surface kinetic energy)
534      - fix bug (avoiding division by zero)
535    o couple pkg/thsice to pkg/seaice:
536      - modify advection in seaice to accomodate new scalar fields to be advected
537      - only muliDimAdection scheme work with seaice/thsice
538      - mapping of thsice-variables to seaice-variables, back and forth
539      - does not break the verification experiments, but does not give the
540        desired results either
541    o pkg/seaice
542      - make (default) second order advection a bit less confusing?
543    
544    checkpoint58f_post
545    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
546      to pkg/seaice):
547      - new routines thsice_map_exf and thsice_get_exf provide the interface
548      - add an additional formal parameter to thsice_solve4temp
549    o pkg/exf:
550      - add new fields wspeed, snowprecip (to be able to couple to thsice)
551      - correct Stefan-Boltzmann constant
552      - new parameter for longwave surface emittance
553      - separate some stuff from exf_bulkformulae into new routines  
554        exf_radiation, exf_wind
555      - add new parameters and constants: longwave emissivity for ocean, ice
556        and snow, evaporation parameters over ice
557      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
558        either wind from stress or stress from wind
559    o pkg/thSIce:
560    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
561    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
562       and THSICE_CALC_THICKN
563    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
564    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
565      to make debugging easier.
566    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
567    o pkg/bulk_force:
568      - clean-up comments and parameters ;
569      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
570    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
571      generate new output for test-experiment: aim.5l_cs.thSI
572    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
573      testreport accordingly
574    
575    checkpoint58e_post
576    o SEAICE_CGRID adjoint done
577    o R_STAR adjoint implemented.
578      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
579      * need to sort out init. of h0facc, etc.
580    o Make pkg/profile fully independent of ecco,cost, etc. stuff
581      to be able to use it in pure forward.
582    
583    checkpoint58d_post
584    o upgrade simple test-experiment to tutorial example:
585     step.1: duplicate the experiment and (step.2) will remove the old copy.
586      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
587      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
588      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
589      tutorial_global_oce_biogeo    <- copy of dic_example
590      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
591      tutorial_plume_on_slope       <- copy of plume_on_slope
592      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
593      tutorial_global_oce_optim     <- empty for now (David ?)
594      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
595     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
596    o correct a sign problem in cost_scat.F
597    o obcs and ptracers: fix boundary conditions for advections schemes
598      with larger stencil
599    o thsice adjoint: start
600    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
601      completeness
602    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
603      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
604    o ptracers adjoint:
605      * avoid extensive recomputatations
606      * fix missing re-init. of gptr (missed by TAF)
607    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
608      me to turn off the excessive output to STDOUT that this package produces
609    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
610      and add those terms in Vector-Invariant formulation.
611    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
612      if the control period (xx_hfluxperiod etc) is 0
613    o in profiles pkg, clean routines and fix details
614    o in ecco pkg, reading ssh data:
615      fix problem in case the model does not start at iter0=0
616    o fix mnc-pickup/restart for ptracers
617    o new package prifiles:
618      code to compute profile-based cost by Gael Forget
619      (modifs in ecco, ctrl, autodiff)
620    o Benign bug fix in initialization (spotted by M. Mazloff) of
621      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
622    
623    checkpoint58c_post
624    o adjoint: finish NLFS adjoint and provide reference output in
625      verification/global_ocean.90x40x15/results_ad_nlfs
626    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
627      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
628      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
629      with SEAICE_CGRID defined.
630    o move calendarDumps from "data" to "data.cal" and clean-up the code
631      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
632    o add useEXF & useCAL flags (for now, set in hard-coded way)
633    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
634      (were missing in NH mode, and wrong in quasihydrostatic mode).
635      waiting for Chris updated version of calc_gw to add those CALLs.
636    o fix bug in quasihydrostatic S/R ;
637      add a test for this option: global_ocean.90x40x15.qshyd
638    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
639      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
640    o add on/off flag useOffLine for package OFFLINE
641    o seaice:
642      - modify advection so that it works also on the C-grid
643      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
644        problem in multi-tile runs with C-grid
645      - add flags for clipping ice velocities and/or masking solver forcing
646      - fix drag (ocean on ice) formulation and a bug that caused noise in the
647        C-grid solver
648      - added a few comments to seaice_diffusion.F
649      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
650        are now exclusive)
651      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
652        required re-ordering the code a little:
653       + make DAIRN global variable (defined in SEAICE)
654       + move computation of the viscosities eta and zeta into a new separate
655         routine (because I need to recompute them in seaice_ocean_stress.F)
656    
657    checkpoint58b_post
658    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
659      update output.txt of exp. aim.5l_cs.thSI
660    o various mnc cleanups and improvements:
661      + shrink lookup tables by factor of ~4
662      + better error reporting when running out of lookup space
663      + able to handle longer path/file names (up to 500 chars)
664    o adjoint:
665      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
666      - TBD: "hidden" mom_vecinv recomp. in dynamics
667    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
668     (allow to differentiate between forcing components using new integer flags:
669      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
670     and add new flag to put Dissipation tendency out of Adams-Bashforth.
671    o ecco
672      - enable trend removal from SSH anomaly obs.
673    o adjoint
674      - a fix for PmEpR when #undef EXACT_CONSERV
675      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
676      - try to fix "hidden" recomp. in forward_step for NLFS
677        (NLFS seems broken sometimes after I checked it in)
678    o seaice:
679     - add c-grid version of the dynamic solver:
680       + three new routines that are the c-grid substitute lsr, dynsolver
681         and ostres
682       + put a few fields that were local to dynsolver into global common
683         blocks, so that I can move the computation of stresses etc into
684         seaice_lsr (saves coding but may break the adjoint).
685     - replace more hardwired parameters by runtime parameters
686     - add ice masks that mask the rhs of the implicit solvers where there
687       is no ice (commented out in seaice_dynsolver, because i am not sure
688       if this works properly), eventually this should replace the clipping
689       of ice velocities in seaice_dynsolver to +/-40cm/s.
690    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
691      include it only where its needed
692    o move balancing of fluxes before the call of external_forcing_surf
693    o seaice:
694      - correct units of turning angles (now they are really in degrees)
695      - move computation of GWATX/Y out of main routine into dynsolver
696      - initialize GWATX/Y in seaice_init
697    o Apply mask on Fresh-Water flux (needed for SSH forcing).
698      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
699    o seaice: add runtime flags for turning angles (default to zero)
700    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
701      and trend from exf forcing and ctrl control adjustments
702    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
703      (since checkpoint57x_post)
704    o change the default rotation period to 86164.s = the Earth rotation
705    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
706      and based on a reference stratification. Tested within hs94.cs-32x32x5.
707    o seaice advection: add code for choosing between the default (2nd order
708      central differences) and multiDim advection schemes provided by
709      pkg/generic_advdiff
710    o seaice:
711      - removed all references to SEAICE_GRID.h fields from
712        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
713        (cubed-sphere configuration will change a little)
714      - grid computations in seaice_init are obsolete now.
715      - cleaned up code a little so that is easier to read (hopefully).
716      - added new (better?) discretizations of default advection and diffusion
717        (turn on with SEAICEuseFluxForm)
718      - replace 1 in 3d global fields by kSurface in growth.F
719      
720    checkpoint58a_post
721    o seaice:
722      - bug fix in advect.F
723    o shelfice:
724      - separate shelfice load anomaly from pload (breaks with time
725        dependent forcing), => introduce constant field shelficeLoadAnomaly.
726        Its default is 0., but it may be computed more cleverly from (unknown)
727        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
728        done offline. A good approximation of the pressure load anomaly is
729        necessary to avoid large initial adjustment processes underneath
730        deep-reaching shelfice.
731      - small fix in ISOMIP shelfice_thermodynamics
732      - add more sophisticated thermodynamics of Hellmer (1989), this is
733        now the default
734      - give a few constants more intuitive names
735    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
736      if bulk formulae are used in long integration (especially EmPmR). Turn
737      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
738      if balancePrintMean, the imbalance that is substracted is printed to
739      STDOUT.
740    o fix bug (typo) in obcs_apply_eta.F
741    o add a new package shelfice which enables us to model the circulation
742      underneath shelf-ice with draughts of hundreds of meters.
743     - works
744     - to do: + include improved thermodynamics
745              + check whether kSurfC (from model/inc/SURFACE.h) can be used
746                instead of new field kTopC
747              + can we use topoFile, Ro_surf and existing code in ini_depth.F
748                instead of new field R_shelfIce and new code in ini_depth.F
749                and ini_mask_etc.F?
750              + adjust vertical mixing schemes?
751    o seaice pkg:
752     - add a cpp-flag to include a simple formula for a salinity dependent
753       freezing point of sea water at the surface
754     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
755       meridional stresses are now different (and hopefully correct)
756    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
757       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
758       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
759    o pkg/diagnostics: add options and parameters for regional-statistics
760       diagnostics ; define regions by reading a region-mask from a file
761       (might add other options later)
762    o pkg/bulk_force:
763     - add option and parameters to use AIM surface-flux formulae.
764     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
765       others forcing fields (defined in PARM05, parameter file "data") are loaded
766       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
767     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
768     - use the right EXCH call for uwind,vwind (to work on CS-grid).
769     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
770       and parameters (note: calcWindStress replaces .NOT.readwindstress).
771     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
772    
773    checkpoint58
774    o add "--embed-source" option to genmake2 which, when the supporting
775      tools can be compiled (as determined by genmake2) will turn on the
776      embed_files package which then embeds the entire MITgcm source code
777      (*.[fFhc] + Makefile) used for the build within the executable
778      - requested by CNH but off by default
779      - adds a paltry <9MB to the mitgcmuv executable in most cases
780      - only writes the output when useEMBEDSRC in eedata is true
781    o clean up 3-dim. relaxation codes:
782      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
783      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
784      * Thanks to Tom Haine for testing!
785    
786    checkpoint57z_post
787    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
788      affects output (@ truncation level) of exp. plume_on_slope ; updated.
789    o fix the pickup behavior for obcs in combination with ptracers
790    o fix a bug in ptracers_external_fields_load
791    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
792      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
793    o transfered surface NH pressure to eta field (if exactConserv).
794    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
795         and update lab_sea output.txt file.
796    o completing 3-dim. relaxation code: additional term
797         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
798      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
799      * At compile time, in "EXF_OPTIONS.h" set
800          #define  ALLOW_CLIMTEMP_RELAXATION
801          #define  ALLOW_CLIMSALT_RELAXATION
802      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
803          tauThetaClimRelax3Dim = 15552000.0,
804          tauSaltClimRelax3Dim  = 15552000.0,
805      * 3 cases:
806          1) Use a constant-in-time 3-dim. field
807          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
808          3) Real-time relax. to time-evolving prescribed field
809    o Adding Laplacian-type smoothness constraint on
810      initial and boundary (forcing) controls (ic, bc)
811      * enable at compile-time via
812        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
813      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
814      * Absolute scale somewhat unclear so far
815      * no area weighting was included since no other cost term does so far
816    
817    checkpoint57y_post
818    First step for a NLFS adjoint
819    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
820    o new init. routines for calc_r_star, calc_surf_dr
821    o still need to deal with ini_masks_etc
822    o testreport seemed happy
823    checkpoint57y_pre
824    
825    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
826    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
827    o add new offset feature to offline pkg (plus minor cleanup)
828    o cfc fixes for final year of integration
829    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
830      be in GCHEM_OPTIONS).
831    
832    checkpoint57x_post
833    o fix testreport Pb in multiple test experiment.
834    o cleanup our namelist syntax in verification:
835      - make it more F95 standards compliant (some work still needed)
836      - allows the vast majority of our tests to work with gfortran
837    o Non-Hydrostatic:
838     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
839     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
840    o Allow to apply AB on T,S rather than on AB(gT,gS):
841     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
842     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
843       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
844     - need a "clever" read_pickup to restart from the other AB formulation
845    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
846    o remove some unused variables (reduces number of compiler warnings)
847    o adjoint
848      * Disable useVariableViscosity for adjoint for time being
849        (there are a number of extensive recomputations)
850      * Initialize certain variables needed for adjoint
851    
852    checkpoint57w_post
853    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
854                 fix the singleCpuIO RS version of MDSWRITEFIELD
855       and add a WARNING if using globalFiles=T with multi-processors.
856    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
857      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
858    o tracer advection scheme:
859      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
860       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
861       was not very convenient).
862      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
863       (further tests needed for the implicit DST & Flux-Limiter schemes).
864    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
865      and sRef for convenience, handy, when you want to initialize
866      ptracers in a large domain with a constant non-zero value. Also,
867      untangle ptracers_init.F a little.
868    
869    checkpoint57v_post
870    o change dome exp. to use variable viscosity in side-drag terms.
871    o remove all the files from the cfc_offline test since they are now
872      incorporated into tutorial_cfc_offline which has been producing
873      identical results for a few days of testing
874    o add new parameter: sideDragFactor to enable half-slip-side BC
875      and change side-drag S/R to use viscosity from mom_calc_visc
876      (can switch back by setting sideDragFactor=0.); affects results at
877      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
878       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
879    o vorticity & strain are now computed without masking, to account for
880      no-slip-side BC in variable viscosity calculation ; mask is applied
881      anyway later on, before computing advection/coriolis terms.
882    o modify exp4 to test new obcs support for reading from external files
883      and for passive tracers
884    o fix behavior of ptracers_monitor when monitor output is written to a
885      netcdf-file; still not independent of monitor.F (writes in the same
886      file).
887    o change default value of tRef (put a uniform, meaningful value for ocean
888      & atmos) and initialize sRef (was missing, as Martin mentioned).
889    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
890      to be proportional to enstrophy dissipation length.  Thus,
891       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
892      This is now consistent with Smagorinsky and with the manual.
893    
894    checkpoint57u_post
895    o OBCS and PTRACERS: add open boundary support for passive tracers
896      - either use homogenous (pseudo) v.Neumann conditions or prescribe
897        OB-values from file; this is not different from the way theta and salinity
898        are treated
899      - however, Orlanski-radiation conditions are not supported, and the model
900        will stop if you use pTracers and Orlanski at the same time.
901      - beefed up the rountine obcs_external_fields_load: now only those open
902        boundary values are overwritten with values from files for which there
903        are really files, otherwise the OB-fields remain untouched. This makes
904        it possible to use different OBs at different ends of the domain (as
905        with EXF)
906    o reduce number of exch calls in shap_filt (s2).
907    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
908      truncation level) 4/5 MLAdjust test results (11&12 digits match).
909    
910    checkpoint57t_post
911    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
912    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
913      same truncation, independent of the face number: affects affects several
914      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
915    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
916      note that biharmonic viscosity + no-slip was not tested in any experiment.
917    o fix bug in non-linear free-surf side-drag ; generate new output for
918      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
919    o make mnc honor the writeBinaryPrec flag for most kinds of output
920    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
921    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
922      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
923    o add brackets in multi-terms sum to get same truncation, independent of
924      the face number (manage to get exactly same value of gU,gV at the cs-edge)
925      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
926    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
927      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
928      a maximum grid-scale Reynolds number.  Also, changes all length calculations
929      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
930      Suggested values of viscosity parameters found in mom_calc_visc.
931      Many new viscosity diagnostics available.
932    
933    checkpoint57s_post
934    o Add clearing-house for viscosity calculations, mom_calc_visc and
935      correct numerous bugs in LeithD and Smagorinsky discretizations.  
936      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
937      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
938      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
939      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
940      The Strain-Tension form is now called with useStrainTensonVisc=.true.
941      ViscAhStrain and viscAhTension are now retired.
942    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
943    o In response to JMC's bug report, genmake2 now ignores any soft-links
944      that it finds in the *current* directory when searching for files.
945      Soft-links found in any other source directories will still work as
946      they did before.
947    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
948      a C routine to unlimit the stack size
949    o mnc-ify pkg/aim snapshot vars
950    o mnc-ify pkg/land as requested by Daniel
951    o various changes to mnc including:
952      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
953      - output can now be grouped so that all files within a group
954          change the ITER portion of their names in lock-step together
955      - can now read ("global") PER-FACE (in addition to PER-TILE) files
956          and works with both EXCH1 and EXCH2 (but needs more testing)
957      - writing works for all verification test cases w/ g77 on Linux
958    
959    checkpoint57r_post
960    o make MNC variable initialization happen earlier
961    o add diagnostics for (almost) each term of the momentum Eq.
962    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
963    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
964    o remove MINIMAL_TAVE_OUTPUT option ;
965      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
966    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
967      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
968    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
969    o add time-dependent SST, SSS control
970    o cost terms in ecco/ modularized (new cost_generic.F)
971    o cost_averages routines are modularized (new cost_averagesgeneric.F)
972    o new infrastructure for seaice model vs. obs misfits in seaice/
973      * driver from the_main_loop.F is seaice_cost_driver.F
974      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
975      * gradient check in Exp. 6a of natl_box_adjoint/
976    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
977      (see README file)
978    
979    checkpoint57q_post
980    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
981    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
982      - bug was reported by Jean-Michel and Ian Fenty
983    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
984      update exp. cpl_aim+ocn output.
985    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
986      Needed for high-res. runs with large global files
987      to be able to limit tapelev size
988    o Changed some tests for adjoint:
989      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
990      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
991      * global_ocean.90x40x15/ back to default 3-level checkpointing
992    o Modifications to enable scripted COMMON to MODULE conversion
993      * verification/OpenAD/code/ has necessary scripts and description;
994      * converts, compiles and runs successfully;
995    
996    checkpoint57p_post
997    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
998    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
999      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1000    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1001    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1002      (was already the case for dissipation with mom_vecinv,
1003       and also the case for grad.PhiHyd when staggered-timeStep)
1004      This will allow to put dissipation out-off the AB time-stepping.
1005     Unfortunately, affects truncation error. Update output of exp. that "fails"
1006      (cg2d matching number) and leave the others for later: front_relax(10),
1007      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1008      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1009    
1010    checkpoint57o_post
1011    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1012      (2) its ready to be documented during the 20050801 DocFest
1013    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1014      for ideal_2D_oce and lab_sea on linux_ia32_g77
1015    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1016      in global1x1_tot/code_seaice_adj to access indices 32, 33
1017      (worth another tag)
1018    
1019    checkpoint57n_post
1020    o adding precip control xx_precip 32
1021    o adding swflux control xx_swflux 33
1022    o Replacing 10 forcing penalty cost routines by 1 generic.
1023    o Implementing partitioning in time-mean and variable adjustment
1024      for atmos. state.
1025    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1026    o in natl_box_adjoint:
1027      * updated exp 1 to 10
1028        (but does not have time-mean vs. variable split results yet)
1029    o updated global1x1/*_seaice_adj/
1030      to incorporate latest changes
1031    o enable useSingleCpuIO for mdsio vector routines
1032      (applies in particular to tapelev I/O)
1033    o removed inefficient K-loop in all active_file*control*.F
1034    
1035    checkpoint57m_post
1036    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1037      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1038    o pkg/exch2: filling of face-corner halo regions is optional
1039      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1040    
1041    checkpoint57l_post
1042     tag before updating tutorials (pre-release-2)
1043    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1044       for output and interpolation of input fields onto model grid)
1045    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1046       Affects results of exp. rotating_tank ; update output.txt.
1047    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1048          and taking the square quantity and/or using a fraction-weight field.
1049    o fix aim_diagnostics_init.F mate numbers.
1050    o add mnc output capability to diagnostics/diagstat and update
1051      our cvsignore files for the ACSII output generated
1052    
1053    checkpoint57k_post
1054    o lab_sea now uses diagnostics package and provides a suite of
1055      new EXF diagnostics output.
1056    
1057    checkpoint57j_post
1058    o exf
1059      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1060        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1061        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1062      * extended diagnostics output
1063        - now includes all EXF variables
1064        - hs, hl moved to common block
1065        - separate S/R for diagnostics, called after ctrl vector is added
1066        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1067        - EXFqnet contains true Qnet (i.e. includes qsw)
1068      * updated verif. lab_sea, global_with_exf
1069      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1070        to ensure that diagnostics sees a true EXFqnet
1071    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1072    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1073      several times with different frequencies.
1074    o mnc-ify the thsice package as requested by Daniel Enderton
1075      - the monitor--MNC output needs work
1076      - many attributes need to be added (most are currently blank)
1077    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1078      - many attributes need to be added (most are currently blank)
1079    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1080    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1081    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1082      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1083         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1084    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1085     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1086    
1087    checkpoint57i_post
1088    o Diagnostics package was changed: diagnostic allocation is now deactivated
1089      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1090    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1091      add 1rst Order upwind vertical Shear.
1092    o add a quick fix for A/B checkpointing in OFFLINE mode
1093    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1094      end-run around the C/Fortran linking horror in eesup/src/timers.F
1095    o added pkg/runclock: allows user to terminate run based on wall clock
1096    o added non-hydrostatic scaling parameter: nh_am2
1097    o pkg/my82: futile attempt to make results compiler-independent by adding
1098      some "_d 0", etc. no effect.
1099    o for mnc output, fill the 'T' coordinate var with myTime and create a
1100      separate 'iter' variable for iteration count
1101    o pkg/diagnostics:
1102      add new capability: output of Global/Regional & per-level statistics ;
1103      tested against monitor output (including land & thSIce) on various exp.
1104    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1105    
1106    checkpoint57h_done
1107      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1108      data.diagnostics, data.gchem, data.ptracers) is done.
1109    
1110    o pkg/diagnostics: prepare for Global/Regional statistics.
1111      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1112    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1113      and rename it: DIFFERENT_MULTIPLE
1114    
1115    checkpoint57h_post
1116    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1117    o pkg/diagnostics: change output frequency, now in seconds (instead
1118      of Nb of iterations). This requires to change data.diagnostics.
1119    checkpoint57h_pre
1120    
1121    o in mnc, let the user create the output dir if both mnc_outdir_date
1122      and mnc_outdir_num are false
1123    o add fflags() to pkg/diagnostics which allows one to specify, on a
1124      per-file basis, the file precision [default behavior is unchanged]
1125    o added diagnostics to pkg/kpp, including computation of mixed layer
1126      depth based on a temperature/density criterion
1127    o updated verification/natl_box to test the new pkg/kpp diagnostics
1128    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1129    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1130    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1131      not mnc -- this mistake was found by JMC and is now corrected
1132    
1133    checkpoint57g_post
1134    o add Adams-Bashforth 3rd Order time stepping:
1135      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1136      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1137    checkpoint57g_pre
1138    
1139    o make lambda[Theta,Salt]ClimRelax spatially varying
1140      (default remains spatially uniform constant based on tau)
1141    o added new control variables
1142      * init. uVel, vVel, etanN
1143      * lambda[Theta,Salt]ClimRelax
1144    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1145      (suggested by G. Forget)
1146    
1147    checkpoint57f_post
1148    o add parameter "baseTime" = model base time = time at iteration zero
1149      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1150      account for baseTime shift
1151    o move Coriolis arrays from PARAMS.h to GRID.h
1152    checkpoint57f_pre
1153    
1154    o mnc-ifying the seaice package
1155    o introduced an alternative length scale calculation for use in the limiting
1156      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1157    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1158    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1159      as well as grad(vort3).  Made it compatible with both approximate form
1160      for the cubed sphere and full form of these gradients.  Added flag
1161      useFullLeith to select between approximate and full form.  
1162    o add "d0" in getcon.F to reduce differences between compilers/platforms
1163      update output.txt of exp. fizhi-gridalt-hs
1164    o change port_rand funtion to allow to set the seed.
1165    o fix obscure MNC bug involving conversion between reals and integers
1166      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1167        new version is now more standards-compliant
1168    o adjoint-related modifications
1169      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1170      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1171      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1172    
1173    checkpoint57e_post
1174    o Adding eddy stress controls a la Ferreira et al.
1175    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1176    
1177    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1178      update output.txt of exp. fizhi-gridalt-hs
1179    o add more "Z" dimensions and associated coordinate vars to MNC
1180    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1181    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1182      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1183      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1184      months and years.  Requires pkg/cal.
1185    o diagnostics: add pickup functionality
1186      - off by default for backwards compatibility
1187      - current version only uses MDSIO -- MNC will be added
1188    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1189    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1190    
1191    checkpoint57d_post
1192    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1193    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1194      output from the diagnostics package
1195    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1196    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1197      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1198    o add coordinate variables to the MNC output from the diagnostics package
1199    o change MNC-flags default value: true when useMNC=TRUE
1200    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1201      the ability (off by default) to read the grid information using MNC
1202    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1203    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1204    o do snap-shot diagnostics at the middle of the time-interval (instead of
1205      at the end).
1206    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1207      new test for AIM with thSIce + slab-ocean
1208    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1209    o move state variable diagnostics to the beginning of the time step ;
1210      (note: still needs some work specially for snap-shot diagnostics)
1211      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1212    
1213    checkpoint57c_post
1214    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1215    o generate new output.txt files on faulks with g77 & the new -ieee option
1216    checkpoint57c_pre
1217    
1218    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1219      update output.txt of exp. global_ocean.90x40x15
1220    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1221      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1222    o add saltFlux(+File) forcing capability with periodicExternalForcing
1223    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1224    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1225    o improvements for the MNC output from DIAGNOSTICS:
1226      - correct handling of the unlimitied dimension
1227      - all dims now have associated coordinate variables
1228      - variables located at U, V, and Corner ("Z") points are now written
1229        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1230        *all* data points are output
1231    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1232    o added pkg/seaice/seaice_monitor.F
1233    o mdsio_readfield.F can now read files visible only to master MPI process.
1234    o pkg/seaice: some test code for ice-modified ocean stress
1235    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1236      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1237      spurious negative numbers for precipitation and humidity.  Will cause
1238      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1239    o pkg/ctrl/
1240      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1241        May be enabled via doPackDiag
1242      *  introduce z-scaling of
1243         + gradient (doZscalePack) and
1244         + control (doZscaleUnpack)
1245    o pkg/mdsio/
1246      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1247      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1248    
1249    checkpoint57b_post
1250    o simplify options in diagnostics_fill arguments (remove weird combinations)
1251    o fix MNC coordinate variables so that they now contain per-face index
1252      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1253      general, EXCH2 grids are only aligned to a "local" coordinate system
1254    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1255    o Implement instantaneous output within pkg diagnostics:
1256      setting a negative frequency in data.diagnostics produces
1257     "snap-shot" output (as opposed to time-average if freq > 0)
1258    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1259      NOTE: change ptracer diagnostics name: use 2 characters to work with
1260            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1261    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1262      becomes the coordinate variable for the 'T' dimension
1263    o add CF-style coordinate variables to MNC
1264      - just a first cut:  numbers are meaningless on the cubesphere and
1265        missing along the T axis but otherwise it works!
1266    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1267    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1268    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1269      this is based directly on what the model compute, so that the content of
1270      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1271    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1272    o clean up build options files for SunOS, in particular
1273      - remove -traditional from xmakedepend
1274      - change -xarch=v9 to -xarch=native for f77
1275      - restore use of make (not gmake)
1276      - add CC=gcc if using g77
1277    o changes per discussion of AM, JMC, & EH3 today:
1278      - move redundant "grid" variables out of "state" -- in preparation of
1279        creating proper CF-style coordinate variables and in recognition
1280        that any/all grid variables can be easily copied (eg. w/NCO) from
1281        the grid files into any of the other NetCDF files
1282      - *always* output grid variables with MDSIO (this will eventually be
1283        changed)
1284      - output MNC grid file if useMNC is true
1285    o every instance of _END_MASTER() has been found and replaced with
1286      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1287      preprocessors
1288    o re-arrange diagnostics pkg initialisation:
1289     - allow each package to extend the available diagnostics list
1290     - add some checking and fix small problems (multi-threaded, ...)
1291     - new S/R diagnostics_fill (replace fill_diagnostics):
1292       look through the short list of active diag. (instead of the long list)
1293       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1294    
1295    checkpoint57a_post
1296    o this set of changes restores TAMC compatibility
1297      tested for global_ocean.90x40x15 adjoint on trough
1298      (what a pain)
1299    
1300    checkpoint57a_pre
1301    o some modifs in tools/build_options for sunos
1302    o call ctrl_pack for ctrl at end for optimcycle=0
1303    
1304    checkpoint57
1305    o add horizontal bi-harmonic viscosity for vertical velocity
1306      - new parameter viscA4W (defaults to viscA4)
1307      - affects only non-hydrostatic code
1308      - to be done: no-slip lateral boundary conditions
1309    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1310    o implement Implicit Vertical advection for pTracers
1311    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1312      (implemented also for implicit vertical diffusion & advection)
1313    o OBCS: extend application of tracer open boundary conditions
1314      to a strip beyond the boundary of width Olx/Oly
1315    o add call monitor to TAF set of required calls (flow directives)
1316      and include in natl_box_adjoint
1317    o untangle a few ifdefs related to cost, ctrl, autodiff
1318      untangel a few ALLOW_ECCO_OPTIMIZATION
1319    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1320      (theta2, salt2 in ecco_cost_weights)
1321    
1322    checkpoint56c_post
1323    o OBCS as control variables
1324      - update ctrl_ad_diff.list, obcs_ad_diff.list
1325      - remove balance of obcs controls from default
1326      - fix index bug nobcs in ctrl_init
1327      - fix dummy fields filen in ctrl_pack
1328      - add dummy weights for obcs
1329    o lsopt: comment out fort.94 output
1330    o optim:
1331      - remove unnecessary header files
1332      - adjusted namelists
1333      - add xerbla.F to Makefile
1334    o exf:
1335      - multiple modifications of exf_check_range
1336      - unit change in exf_init_runoff from [m/year] to [m/s]
1337    o mdsio:
1338      - i/o-vector change debugLevel from debLevA to debLevB
1339    
1340    checkpoint56b_post
1341    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1342      is called from DO_THE_MODEL_IO
1343      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1344      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1345      - clean up PTRACERS_WRITE_TIMEAVE a little
1346    o add another verification experiment that tests both the cfc-pkg and
1347      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1348      reactive tendencies treated inline with regular timestepping
1349    o testreport previously did a lousy job of comparing small numbers, so
1350      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1351      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1352      testreport.
1353    o ptracers_monitor: bug fix for MPI
1354    
1355    checkpoint56a_post
1356    o GCHEM: finish reorganizating the package
1357      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1358        (introduces another 3D-array for each passive tracer, but only if
1359        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1360        gchemTendency is not needed because the timestep is done separately)
1361      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1362      - GCHEM is now---more or less cleanly---separate from PTRACERS
1363      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1364        so clear to me how that should be done in a general way.
1365    o CFC: improve formatting of output in CFC_ATMOS
1366    o PTRACERS:
1367      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1368        that ALL experiments with ptracers enable can be checked. This makes
1369        GCHEM_MONITOR obsolete.
1370      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1371        monitorFreq
1372      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1373    o add PTRACERS (PTR0[1-5]) to testreport output
1374    o exf_check_range:
1375      * default changed to .TRUE.
1376      * will check values for niter0 if debLevA, every timestep if debLevB
1377      * STOP in exf_check_range if 'out of range'
1378      * range chosen generous to allow for potential extema
1379      TBD: a version with stricter range
1380           permitted range would be runtime parameters
1381    o GMredi:
1382      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1383      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1384      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1385    o GCHEM:
1386      - move call to GCHEM_FORCING_SEP, so that it is now called before
1387        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1388      - introduced a useGCHEM runtime flag and applied it everywhere.
1389      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1390        this flag is now only visible within GCHEM-pkg routines.
1391      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1392        be replaced by a 3D array that is computed before thermodynamics; for
1393        this, the tracer ID iTracer had to be included into the parameter list
1394        of ptracers_forcing
1395      - set up forward_step to call gchem_forcing, that will replace
1396        gchem_forcing_int in ptracers_forcing
1397      - cleaning up
1398    o small cleaning of exch2: remove files that are also in eesupp/src
1399    
1400    checkpoint56
1401    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1402    o mnc: cleanup "full" files--fixes out-of-memory problem
1403    o ECCO-GODAE
1404      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1405      * fully merged and updated from SIO code
1406        windstress sign change affects
1407        - exf_inscal_[u/v]stress
1408        - sign of xx_tau[u/v] adjustments
1409        - signs in cost_scat
1410      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1411      * natl_box_adjoint updated and compressed
1412      * 2-level checkpoint switch added
1413        (tested in EXP. 1 of natl_box_adjoint)
1414      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1415    o SVD
1416      * first complete, non-hacked version for SVD calculations
1417      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1418        performed via direct access files admtlm_vector.it????
1419        (via ctrl_[un]pack)
1420      * optimcycle is used for ARPACK iteration counter
1421        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1422      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1423        and add linear transforms where necessary
1424      * controls are initial/final SST, SSS (can be extended; need to check
1425        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1426    o mdsio: filename info to both stderr, stdout
1427    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1428      from sign change
1429    
1430    checkpoint55j_post
1431    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1432      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1433    o add consistent build directories and .cvsignore files to verification
1434    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1435    o make all subroutines 30 or less characters in length for certain older
1436      compilers to work (a thorough search only turns up two routines in
1437      pkg/ptracers)
1438    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1439      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1440    
1441    checkpoint55i_post
1442    o change arrays for total vertical diffusivity (2.D if explicit,
1443      3.D if implicit) ; each ptracer uses its own background value.
1444    o added mnc/NetCDF output capability to ocn_compon_interf
1445      - added bits to verification/cpl_aim+ocn so that it can run on
1446        ITRDA and other clusters without the mpirun "-wd" option
1447    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1448      configuration
1449    o give MNC the ability to create additional files rather than
1450      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1451      - the default is just less than 2GB which is a practical limit
1452        on many systems
1453    o Compute the non-local term using either KPP vertical diffusivity (=default)
1454       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1455    
1456    checkpoint55h_post
1457    o add verification test "vermix"
1458    o remove all the *_ioinc flags and replace with the single global
1459      outputTypesInclusive flag
1460    o allow to set a vertical profile of vertical diffusivity for T & S
1461    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1462    o useMNC moved from data.mnc to data.pkg
1463    
1464    checkpoint55g_post
1465    o Renaming carbon AD experiments to comply with testreport conventions
1466    o Updating adjoint of Held-Suarez hs94.1x64x5
1467    o Fixing directives for non-ECCO forward_step, after ECCO directives
1468      have been fixed to avoid recomp. of do_oceanic_phys
1469      Works well for global_ocean.90x40x15,
1470      but recomp. issue remains for carbon
1471    o Updating adjoint output for natl_box_adjoint after
1472      pkg/ecco has been modified (see taga c55d_post)
1473    
1474    checkpoint55f_post
1475    o rename to timeave_init_fixed
1476    
1477    checkpoint55e_post
1478    o some delicate re-shuffle of store directives to avoid one
1479      extra call of do_oceanic_physics
1480      affects ecco_the_main_loop.F, do_oceanic_physics.F
1481      checkpoint_lev1_directives.h
1482    o NB: this may break global_ocean adjoint temporarily,
1483      but it is clear how to fix it. Will do later, need this now.
1484    
1485    checkpoint55d_post
1486    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1487    o ecco_cost_weights is modified to 1x1 runs
1488    o modifs to allow observations to be read in as
1489      single file or yearly files
1490    o enable to read exf forcing fields as either
1491      single file or yearly files (flag useExfYearlyFields)
1492    checkpoint55d_pre
1493    
1494    o switch between 2-level and 3-level checkpointing
1495    o add ability of MNC to write local and "partial" (eg. 2D slices where
1496      the full 3D field is never actually stored) arrays to NetCDF files
1497      with the correct (that is, the complete multi-dimensional) set of
1498      array indicies
1499      - used in mom_vecinv() to write the diagFreq output
1500      - tested (demonstrated) in verification/aim.5l_cs
1501    o further mnc-ification
1502      - add verification/lab_sea to the list with mnc setups
1503      - fix undefined mnc v-names in cd_code
1504      - add kpp to mnc output (both snapshot and timeave)
1505    o non-hydrostatic code
1506      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1507        in calc_gw.F
1508      - defaults to viscAh
1509      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1510        friction or Leith) in non-hydrostatic mode, as long as there is
1511        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1512    o pkg/cost
1513      extend simple cost functions to treat time mean quantities
1514      (T,U,V) via cost_accumulate_state from cost_tile
1515    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1516        be 2 times larger than the minimum size the advection scheme requires.
1517        now get a perfect conservation of salt in advect_cs test-exp (updated)
1518    o GGL90 (Gaspar's TKE mixed layer)
1519      - add horizontal diffusion of TKE, requires exchanges in
1520        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1521        default. In OPA there is no horizontal diffusion of TKE but the
1522        mixing coefficients are computed from a horizontal average of TKE of
1523        6 points or so. I think that diffusion has a little more physical
1524        justification.
1525      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1526        was in vain)
1527      - mask tke-variable in ggl90_init
1528    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1529    o fix biharmonic diffusion on CS-grid.
1530    o more obcs stuff
1531      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1532        for reading boundary values. This routine is called from
1533        obcs_prescribe_read
1534      - updated obcs_check
1535      - changed sponge layer relaxation parameter units for days to seconds
1536      - turned off sponge layer by default
1537      - changed argument list of OBCS_CALC to myTime+deltaTclock
1538      - fixed about 35 bugs in obcs_external_fields_load
1539    
1540    checkpoint55c_post
1541    o obcs stuff
1542      - new runtime flags useOBCSprescribe, useOBCSbalance
1543      - re-arranged obcs_calc
1544      - moved exf_getobcs to obcs_prescibe_read
1545        obcs_prescibe_read is called after ORLANSKI stuff
1546        and independent of it (executable can contain all).
1547      - updated obcs_check
1548      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1549        These may be necessary only if tangential velocities are
1550        prescribed at OB, not sure, needs testing.
1551    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1552      which simplifies the calls and passes the ifc check-bounds test
1553    
1554    checkpoint55b_post
1555    o add a 2D scalar, Z location, exchange_2 routine.
1556    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1557      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1558      affects advect_cs results (for the wrong reason): update output.txt
1559    o use a more standard discretization for biharmonic viscosity ;
1560     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1561      affects results of dome set-up: update output.txt
1562    o fix gad_advection.F (CubedSphere part), back to version 1.23
1563    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1564    
1565    checkpoint55a_post
1566    o merged code to
1567      * prescribe/read time-dependent open boundaries
1568        (works in conjunction with exf, cal)
1569      * sponge layer code for open boundaries
1570      * each boundary N/S/E/W now has its own CPP option
1571        (healthy for the adjoint)
1572    
1573    checkpoint55
1574    o up-to-date adjoint of previous breaks
1575      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1576      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1577      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1578      - carbon: * remove tr1-related adjoint verification
1579                * add ptracer as control variable
1580    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1581      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1582    
1583    checkpoint54f_post
1584    o in verification/carbin/ remove experiment related to
1585      ALLOW_PASSIVE_TRACER (array tr1 etc)
1586      code_ad/ input_ad/ results_ad
1587    
1588    o add two new packages
1589      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1590        + subject to optimization (memory)
1591      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1592        + subject to reordering (many GOTOs in the original code)
1593        + so far opps is called for every (i,j) point, and then operates in
1594          the vertical; one may want to reorder the scheme in order operate in
1595          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1596          fields)
1597    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1598      - all verification tests compile and run with linux_ia32_g77
1599      - defaults are compatible with current input files--nothing
1600        should change if you were not previously using MNC
1601      - MNC output has been added in numerous places (eg. timeave)
1602        but there are still a few writes not yet do-able with MNC
1603        (this is in progress)
1604      - flags now allow for either/or/both use of MDSIO and MNC and
1605        documentation will soon follow
1606      - numerous small formatting cleanups for ProTeX
1607    o add version info (via BUILD_INFO.h) to MNC and stdout
1608    
1609    checkpoint54e_post
1610    o add two new packages
1611      - pp81 (Packanowski and Philander, 1981), Richardson number and
1612        stratification dependent mixing
1613      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1614      - these scheme operate in a similar manner as KPP (without ghat, of
1615        course), however there is only one diffusivity that is used for both
1616        temperature and salinity (and passive tracers)ç
1617    o add offline package
1618    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1619      provided by Stephanie Dutkiewicz
1620    o genmake2: add ability to search for C compilers and cleanup test output
1621      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1622    
1623    checkpoint54d_post
1624    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1625    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1626      leading to additional shift by 5 days each year of integration
1627       (i.e. leading to considerable offset over the years)
1628    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1629    o start with no AB and no initial filtering (staggerTimeStep):
1630      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1631    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1632      (external loading & cpl import/export stay in forward_step.F)
1633    o update coupling interface to work with new staggerTimeStep
1634    o change MDSIO ptracers_pickup.
1635    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1636    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1637    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1638    
1639    checkpoint54c_post
1640    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1641      this affects (truncation error) output.txt of test-exp:
1642       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1643    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1644    o change Qnet to always be the net heat flux, (+upward).
1645      affects (truncation error) output of natl_box exp.: updated
1646    o define the max number of passive tracers in PTRACERS_SIZE.h
1647    o start to test mnc routinely in exp0
1648    o add sea-ice loading (sIceLoad) as a new forcing field.
1649    
1650    checkpoint54b_post
1651    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1652       impressive on Altix and Opteron systems)
1653    o diagnostics can now write NetCDF files through the mnc package
1654    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1655    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1656    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1657      affects (truncation error) output of lab_sea & natl_box exp.: updated
1658    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1659    
1660    checkpoint54a_post
1661    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1662    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1663    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1664    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1665      + internal_wave (shift in writing cg2d_ini_res)
1666    checkpoint54a_pre
1667    
1668    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1669      - modified verification/lab_sea and natl_box_adjoint accordingly
1670    
1671    checkpoint54
1672    checkpoint53g_post
1673    o prepare splitting of thermodynamics: store convect.counter in common block
1674    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1675      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1676    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1677    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1678    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1679    o restore adjointability
1680    
1681    checkpoint53f_post
1682    o modifications that affect AIM experiment results (update output.txt):
1683      - no advection of S at top interface Nr (pkg/generic_advdiff)
1684      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1685    o AIM pkg:
1686      - include stability function into surf.Flux derivative relative to Tsurf
1687      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1688    
1689    checkpoint53e_post
1690    o merged cylindrical coord configuration
1691    o added rotating_tank experiment
1692    checkpoint53e_pre
1693    
1694    checkpoint53d_post
1695    o faulks upgraded: re-generate output.txt that have changed:
1696       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1697    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1698    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1699    o added Sadourny discretization of Coriolis
1700      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1701      - re-enabled use of omega3 (useAbsVorticity)
1702    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1703      vector-invariant equations
1704      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1705    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1706      hopefully without new bugs
1707      - still to do: biharmonic friction for non-hydrostatic w
1708    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1709    o regenerated output for global_ocean_ebm (using -ieee)
1710    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1711      of mom_common/
1712      - simple re-arrangement of instructions within computing loop
1713    checkpoint53d_pre
1714    
1715    checkpoint53c_post
1716    o new version of coupler for AIM+thSIce and Ocean models
1717     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1718     - land: change Evaporation of snow
1719     - aim with thSIce: fix bug in snow-precip.
1720    o changes to calc_gw.F
1721     - bug fix for w^2 term near the bottom boundary
1722     - (hopefully) improve the lateral slip boundary condtions for use with
1723        partial/looped cells
1724      - because the bug fix changes two verification experiments anyway (exp5
1725        and plume on slope), change the lateral boundary condition from half slip
1726        to the value of no_slip_sides
1727    o ebm package wasnt quite up to the parallel task. Fixed that.
1728    o Adjoint of EBM package + verification
1729      * TLM OK
1730      * ADM not sufficient accuracy yet (needs further testing)
1731    
1732    checkpoint53b_post
1733    o Commiting new energy balance model to repository
1734      * package is pkg/ebm
1735      * verif. is verification/global_ocean_ebm
1736      * references are in ebm_driver.F
1737    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1738    C        Global thermohaline circulation. Part I:
1739    C        Sensitivity to atmospheric moisture transport.
1740    C        J. Climate 12(1), 71-82
1741    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1742    C        Global thermohaline circulation. Part II:
1743    C        Sensitivity with interactive transport.
1744    C        J. Climate 12(1), 83-91
1745    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1746    C        Destabilization of the thermohaline circulation
1747    C        by atmospheric eddy transports.
1748    C        J. Climate 7(12), 1870-1882
1749    o Will need long integration testing.
1750    checkpoint53b_pre
1751    
1752    o created pkg/mom_common in preparation for variable viscosity code
1753    o renamed and split ini_mnc_io
1754    o pkg/land: only liquid water can diffuse or run-off
1755    o AIM using land: soil wetness availability account for snow
1756    o added printMapIncludesZeros to EEPARMS namelist
1757    
1758    checkpoint53a_post
1759    o restore TAMC compatiility for exf_constants.h
1760      (no usage of _d in .h)
1761    o Additional storing in KPP in an attempt to fix
1762      TAMC problem with adjoint of KPP code.
1763      (no success...)
1764      Identical code works fine with TAF.
1765    o Fixed verification/natl_box_adjoint experiments.
1766      Initial conditions for Experiments 4 and 5 are now
1767      set to "SEAICE_initialHEFF=0", which is more reasonable,
1768      and hence gives results closer to that of Experiment 2.
1769      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1770    
1771    checkpoint53
1772    o stable checkpoint with up to date adjoint
1773      TLM tests only run for 1st grdchk at the moment. Its unclear if
1774      this is a code problem or a problem with resetting code for g_
1775      variables that is being autogenerated wrong.
1776      Otherwise:
1777       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1778       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1779         are both still in chaos following their security messes.
1780    
1781    checkpoint52n_post
1782    o various build (mostly genmake2) changes including:
1783      - ability to build/run more easily within Cygwin and MacOS X
1784      - more complicated Makefiles with a stronger dependence on Gnu Make
1785    o pkg/seaice modifications
1786      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1787        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1788        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1789      - changed proxy for geostrophic velocity and updated
1790        verification/lab_sea/results/* accordingly
1791      - removed ADI dynamic solver from pkg/seaice
1792      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1793        they caused a segmentation fault under certain circumstances
1794      - removed unused field WATR
1795    o bug fix in exf-package:
1796      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1797         now reflect that.
1798    o small fixes in the cal-package:
1799      - set reference date to first of January for the 'model'-calendar
1800      - failing of cal_CheckDate in cal_FullDate now actually results in a
1801        warning
1802    o small modifications in exf-package to increase flexibility:
1803      - change climtempfreeze from a constant to a runtime parameter that
1804        is specified in data.exf_clim (default = -1.9)
1805      - introduce runtime parameter windstressmax (default = 2.0) that is
1806        specified in data.exf
1807    o fix in pkg/thsice:
1808      - update Evap (Tsf changes) to be consistent with Latent heat flux
1809      - maintain snow precipitation unchanged (even if Tsf >=0).
1810     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1811    
1812    checkpoint52m_post
1813    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1814      this does not change any of the results, because myIter=0 in swfrac always
1815      lead to jwtype=2 (the default anyway), but the call makes little sense
1816      as a default
1817    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1818    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1819      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1820    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1821    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1822    o extending useSingleCpuIO option to work with new exch2 I/O format
1823      - old-style, missing-tile I/O is still accessible by defining CPP
1824        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1825    o monitor package can write to NetCDF files and/or STDOUT
1826    o fix re-definition bug in MNC_GRID_INIT_ALL()
1827    o doc/api_reference added
1828      - a framework for building an API Reference Manual using all
1829        the "protex" comments embedded in the code
1830      - see pkg/generic_advdiff, pkg/mnc for examples
1831    o MNC:
1832      - make myThid the last argument for all subroutines
1833      - new default for the grid files: NO halos
1834      - add useMNC and other run-time flags
1835      - separate per-file-group handling of the unlimited dimension
1836      - early initialization of MNC w/ flags read at the eeboot stage
1837        and lookup tables set in initialize_fixed
1838      - write all MNC output to a freshly-created directory
1839    o thermodynamics sea-ice (thsice) is now tested with testreport.
1840    o test exp. advect_cs: use the standard cs32 grid ; update output.
1841    o Added functionality to grdchk:
1842      pick global i,j,k position (or nearest wet) where to perform check.
1843    
1844    checkpoint52l_post
1845    o new land formulation:
1846      a) use ground enthalpy as prognostic variable to ensure exact
1847         energy conservation.
1848      b) account for water temperature and for latent heat of freezing
1849         in all processes (rain, run-off, ground storage)
1850      c) compute surface and ground temperature implicitly.
1851    o aim_v23 modification for new land model:
1852      a) Treat separately land / ocean / sea-ice surface fluxes
1853         to allow implicit computation of land & sea-ice surface temp.
1854      b) add snow precipitation.
1855    checkpoint52l_pre
1856    
1857    o fix problem (when 1 tile is empty) in min/max monitor.
1858    o fix bug in timeAve (u,vZetatave in common block)
1859    o no restoring terms under ice for pkg/seaice
1860    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1861    o bug fix for pkg/seaice pickups
1862    o change MNC call locations and add coordinate attributes
1863    o mask vorticity at the corner ; affects global_ocean.cs output
1864    o fix ini_curvilinear_grid ; test CS experiments with mpi
1865    o aim.5l_cs: modify sea-ice fraction input file ; update output
1866    o exf: Adding simple range check routine for exf fields after read
1867    
1868    checkpoint52k_post
1869    o removed top-level directory "diags"
1870      - we migrated these functions to pkg/timeave a long time ago
1871    o fixed bug introduced in pkg/monitor
1872    o accuracy ctrlprec = 32 insuffient for gradient checks using
1873      averaged fields (I/O via cost_averages)
1874      -> use ctrl.h in active_file*.F to control I/O precision.
1875    o paramter list of CALL ADTHE_MAIN_LOOP
1876    o added initial do_the_model_io to ecco
1877    o set all ...Freq to zero after cost_final
1878      taveFreq, dumpFreq, pChkptFreq
1879    o MAIN and ECCO differentiability restored
1880    
1881    checkpoint52j_post
1882    o fix nchklev in tamc.h for global_ocean...
1883    o Bringing flow and store directives up-to-date
1884    o Really weird thing!
1885      call do_the_model_io from the_main_loop with parameters
1886      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1887      TAF places a faulty re-call of initialise_varia
1888      after cost_final call which should not be there!
1889    checkpoint52j_pre
1890    
1891    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1892      error messages
1893    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1894    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1895      debug output
1896    o modfied mdsio_writefield.F to handle non-global files under exch2
1897    o update AIM Cubed-Sphere exp (aim.5l_cs):
1898      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1899    o update AIM Equatorial Channel exp:
1900      use standard aim_v23 pkg and change the SST fields to be more realistic.
1901    o globalFile now works with exch2
1902    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1903      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1904    o limit timeave output for hi-res integrations
1905    
1906    checkpoint52i_post
1907    o removed CPP_EEOPTIONS.h from verification/*/code
1908    o updated the tiling for global_ocean_pressure
1909    checkpoint52i_pre
1910    
1911    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1912      the old pkg/aim).
1913    
1914    checkpoint52h_pre
1915    o shortened offending lines in exch2_send_rx?.template
1916    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1917    o genmake2: add build & execute test for NetCDF code
1918    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1919      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1920    o added useSingleCPUIO flag to monitor.F and mon_out.F
1921    o added temporary hack for sea-ice dynamics on the cube:
1922      metric terms are ignored and it is assumed that
1923      there is no sea-ice on cube faces 1, 2, 4, and 5.
1924    
1925    checkpoint52f_post
1926    o added exch2 cube routines to pkg/exch2
1927    o modified hs94.cs-32x32x5 to use it
1928    o added new grid files to hs94.cs-32x32x5
1929    checkpoint52f_pre
1930    
1931    checkpoint52e_post
1932    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1933      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1934    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1935      to work with implicit vertical advection and AB ;
1936    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1937    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1938     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1939    checkpoint52e_pre
1940    
1941    o fix bug in impldiff when Nr=1 or Nr=2.
1942    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1943    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1944    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1945      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1946    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1947    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1948    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1949    
1950    checkpoint52d_post
1951    o re-tiled many expts to allow comparison in multi-processor mode
1952      - updated output accordingly
1953      - changed hs94.128x64x5 to use intial T from file rather than use the
1954        random number generator
1955    o add infrastructure in model routines for fizhi and gridalt packages
1956    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1957    o changes to permit hi-res, cubed-sphere, configuration
1958      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1959      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1960      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1961        of surface winds for the cube
1962      (A verification experiment, based on global_ocean.cs32x15, but with
1963       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1964       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1965       complete with example surface forcing files and matlab scripts to look
1966       at the output and compare it with that of global_ocean.cs32x15.)
1967    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1968       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1969       to conform to the common rule.
1970    o check-in the first version of the coupler + interfaces for multi-components
1971       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1972       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1973       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1974       - ocean and atmos. share the same horizontal grid (no interpolation).
1975       - exchanges between component and coupler is done in forward_step
1976    o new verification experiment, cpl_aim+ocn:
1977       coupled ocean - AIM atmosphere on cs32 grid.
1978    
1979    checkpoint52d_pre
1980    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1981    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1982    
1983    checkpoint52c_post
1984    o Fixing OPTIONS files for use of exf:
1985      - ALLOW_ECCO not needed
1986      - ECCO_CPPOPTIONS.h should not be included from
1987        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1988        as has been the case in the past
1989      - All cal/exf related options are currently set in
1990        single header file. Should remain so until we
1991        agree on a consistent new policy.
1992    o Removed all CPP options for cal package.
1993      cal has no more CPP options.
1994    o modified STOREs in GAD_ADVECTION
1995    o corrected key comp. for passkey
1996    
1997    checkpoint52b_post
1998    o new version: "thsice" of thermodynamic sea-ice pkg:
1999     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2000     - modify fluxes but do not change theta directly;
2001     - light cleaning of bulk_force pkg (still needed with thsice).
2002     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2003       + output_thsice.txt to test thsice & bulk_force pkgs.
2004    o put back grid & coriolis monitor output.
2005    checkpoint52b_pre
2006    
2007    o call "do_the_model_io" at the beginning (=> dump initial state)
2008    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2009    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2010      (need info on NUMBER_OF_PTRACERS)
2011    o missing PTRACERS headers in some routines
2012    o default tamc.h in pkg/autodiff supposed to crash
2013      to ensure proper customization
2014    
2015    checkpoint52a_post
2016    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2017      - moved surfaceTendencyTice from pkg/seaice to main code
2018      - subroutine FREEZE_SURFACE now limits only surface temperature
2019        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2020        => new output.txt for global_ocean.cs32x15 & global_with_exf
2021      - keep the old version of FREEZE for backward compatibility;
2022        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2023      - corresponding modifs for TAF directives
2024    o added surface flux output variables to TIMEAVE_STATVARS
2025    o time-averaged output for pkg/ptracers
2026    o fix problem with ECCO-related divided adjoint
2027      snapshot file was missing some ad-variables,
2028      but no warning issued by TAF
2029    
2030    checkpoint52a_pre
2031    o some bug fixes for #undef REAL4_IS_SLOW
2032    
2033    checkpoint52 = ecco_c52_e35
2034    o after testing adjoints of checkpoint51u_post
2035    
2036    checkpoint51u_post
2037    o this is the post-merge tag of the ecco-branch
2038      (needs another clean checkout and re-testing)
2039    o various natl_box_adjoint configs and results
2040      but no input fields
2041    o obcs adjoint not yet merged!
2042    o adding ECCO global 1x1 and 2x2 degree configs
2043    o updated/extended some store directives for seaice
2044    o pkg/ecco now containes ecco-specific part of cost function
2045    o top level routines the_main_loop, forward_step
2046      supersede those in model/src/
2047      previous input data.cost now in data.ecco
2048      (new namelist ecco_cost_nml)
2049    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2050    
2051    checkpoint51t_post
2052    o this is the pre-merge tag of the ecco-branch
2053    
2054    checkpoint51s_post
2055    o cleanup: removed various obsolete #define-s
2056    o pkg/grdchk
2057      - renamed 'ph-grd 3' to 'grad-res'
2058      - merged from ecco-branch
2059        (remaining bug fixes for obcs gradient checks)
2060      - additional high-precision output for testreport
2061        (grep for 'precision_grdchk_result')
2062    
2063    checkpoint51r_post
2064    o cleaned up or removed CPP_OPTIONS.h files
2065    o updated results for some of the tests to reflect the new
2066      optfiles (-ieee: -O0 instead of -O3)
2067    
2068    checkpoint51q_post
2069    o cd_code:
2070      - moved cd_scheme.F -> cd_code_scheme.F
2071      - separate read_checkpoint from cd_code_ini_vars.F
2072      - separated cd_code part from write_checkpoint
2073      - updated AD_SOURCE, generated .flow
2074      - added CD_CODE_VARS.h to the_main_loop
2075      - Moving cd_code specific store dir.s to pkg/cd_code
2076    o ctrl package totally restructured
2077      - pack/unpack now optional and decoupled from
2078        xx_/adxx_ I/O
2079      - ctrl_pack/unpack cleaned
2080        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2081      - confined inclusion of AD_CONFIG.h to where necessary.
2082    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2083    
2084    checkpoint51p_post
2085    o create initial cd_code package
2086      - WARNING: the initialization of fields within packages
2087        is broken because INI_FIELDS (where READ_CHECKPOINT is
2088        called) is called *before* PACKAGES_INIT_VARIABLES.
2089        This seems to be backwards since
2090        1) its important to initially zero the entire field including
2091           the "halo" region
2092        2) zeroing needs to be done *before* reading pickup info
2093           and the pickup call might or might not happen in any
2094           particular run
2095      - this needs an overhaul for R2
2096    o cleanup verification/*/code/GMREDI_OPTIONS.h
2097    o cleanup testreport
2098    
2099    checkpoint51o_post
2100    o bringing AD-related verif's up to date with genmake2
2101      - carbon/
2102      - global_ocean.90x40x15/
2103      - hs.94.1x64x5/
2104      - (front_relax/ )
2105    o (more) consistent directory structure for AD-related verif.'s
2106    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2107    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2108    o bug fix in find_alpha.F for MDJWF:
2109      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2110        change rho -> rho-rhoConst
2111      - replace call find_rho to find_rhonum
2112    o initialisation of rFlx extended to full array (required by TAF)
2113      and shifted to thermodynamics
2114    o removed PTRACERS.h in ptracers routine
2115    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2116    o Correcting initialisations for fVerU, fVerV.
2117    o helping TAF to recognize dependency on kUp for
2118      fVerU, fVerV
2119    o Replacing delZ by delR in pkg/ctrl/
2120    checkpoint51o_pre
2121    
2122    o undid all of cp51 pending some cleanups and discussion
2123    o added the [#include "AD_CONFIG.h"] statement to all files that need
2124       it for adjoint/tl #defines
2125     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2126     o removed tools/genmake since it no longer works
2127    
2128    checkpoint51n_post
2129    o modifications to make FREEZE flux visible to pkg/kpp
2130      - moved surfaceTendencyTice from pkg/seaice to main code
2131      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2132      - subroutine FREEZE now limits only surface temperature
2133        (this means new output.txt for global_ocean.90x40x15,
2134         global_ocean.cs32x15, and global_with_exf)
2135    o added surface flux output variables to TIMEAVE_STATVARS
2136    
2137    checkpoint51n_pre
2138    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2139    o added [#include "AD_CONFIG.h"] to all files that use the following
2140      defines:
2141      - ALLOW_ADJOINT_RUN
2142      - ALLOW_TANGENTLINEAR_RUN
2143      - ALLOW_ECCO_OPTIMIZATION
2144    
2145    checkpoint51m_post
2146    o incorporating changes to get TAMC/TAF working in genmake2
2147      - added new TAMC/TAF targets to the Makefile
2148      - various cleanups related to package handling
2149      - these changes should have no impact on the forward model
2150    
2151    checkpoint51l_post
2152    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2153     - faster algorithm for cal_addtime.F
2154     - higher precision arithmetic, where needed
2155     - pkg/exf *startdate variables changed from calendar date to
2156       model integration time
2157    
2158    checkpoint51l_pre
2159    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2160    o enable to apply restoring on S & T only in a latitude band.
2161    o update output (external_forcing_surf modif. change truncation errors)
2162       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2163    
2164    checkpoint51k_post
2165    o change default to: useNHMTerms=.FALSE.
2166     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2167       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2168     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2169        exp1, ideal_2D_oce
2170     - change data file of oceanic exp (leave the results unchanged for now)
2171       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2172    o set gravitySign automatically according to the vertical coordinate used
2173      (and change sign: back to "logical" value: +1 when R increases downward)
2174    o added an include barrier to the default CPP_OPTIONS.h and
2175      removed the #include "PACKAGES_CONFIG.h" from it
2176    o fix a bug in mom_fluxform (from chk51j_post)
2177    
2178    checkpoint51j_post
2179    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2180    o adjusted some flow directives (dynamics, thermodynamics)
2181    o added cubed-sphere case to test cost function
2182    o heckpoint_lev?_directives.h now include
2183      pkg-specific directives, whenever those are enabled.
2184    o Moving pkg-specific flow directives to corresponding pkg
2185      Moving pkg-specific differentiation list to corresponding pkg
2186      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2187      ---> conventions are
2188           - pkg_ad.flow
2189           - pkg_ad_diff.list
2190           - pkg_ad_check_lev?_dir.h
2191    
2192    checkpoint51i_post
2193    o merge of the branch-genmake2
2194      - knowingly breaks the older genmake
2195      - automatic generation of all ALLOW_${PKG_NAME} defines
2196      - new testreport supersedes older testscript
2197    o large number of package inclusion and header cleanups
2198    checkpoint51i_pre
2199    
2200    o new output for adjoin of global ocean vector invariant
2201    o fix for checkpoint of thermodynamic seaice and bulk_force
2202    o Steph gchem various cleanups
2203    
2204    checkpoint 51h_pre
2205    o fixed some single quotes
2206    o modify gchem pkg to be more versatile
2207    o modifications to clean up dic pkg
2208    o add pkg/cfc
2209    
2210    checkpoint51g_post
2211    o provide links for ARPACK and ADM*TLM
2212    o start removing verification/vero/
2213    o update AD-related stuff
2214      (in particular some IF-statements in model/src/ routines)
2215    o adding to verification/global_ocean.90x40x15/ adjoint of
2216      vector invariant setup
2217    
2218    checkpoint51f_post
2219    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2220    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2221      of tracer Green's fucntions for ocean inversion project.
2222    
2223    checkpoint51f_pre
2224    o Added on-the-fly spatial interpolation capability
2225        "USE_EXF_INTERPOLATION" to pkg/exf.
2226      - This is a temporary Cartesian-grid hack until
2227        the super-duper ESMF coupler becomes available.
2228      - See verification/global_with_exf/README for usage example.
2229      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2230        flags and modified pkg/seaice accordingly.
2231    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2232        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2233        non-local transport term.
2234    
2235    checkpoint51e_post
2236    o pkg/mom_vecinv:
2237      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2238      - add time-ave diagnostic of vorticity advection.
2239    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2240    o atmospheric geopotential: - include water vapor effect;
2241                                - use p^kappa in p* scaling.
2242    o land pkg: read initial state from files.
2243    o AIM : add stratospheric drag in the upper level
2244    
2245    checkpoint51d_post
2246    o change function ILNBLNK (=> last non-blank char.) to return zero
2247      (instead of the string length) when the string. char is empty
2248    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2249    o modif's to restore TAMC compatibility
2250      - avoid "_d" constructs in PARAMETER declarations
2251      - avoid interrupting lines by comment lines
2252    o Use cluster local disks for purely local I/O
2253      vs. globally visible disks needed for ctrl stuff
2254      (merged from ecco-branch)
2255      - new active_file_loc... and mdsio_..._loc routines
2256      - affected packages: autodiff, ctrl, grdchk, mdsio
2257    
2258    checkpoint51c_post
2259    o introducing integer flag debugLevel
2260      - debLevZero: suppress all output
2261      - debLevA: standard
2262      - debLevB: equivalent to current debugMode=.TRUE.
2263    o introducing pathname variable mdsioLocalDir for mdsio
2264      that can be specified at runtime
2265      (relevant for cluster I/O to local disk)
2266    `
2267    >>>checkpoint51b_post
2268    adjoint of ptracers
2269    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2270    o extended state in checkpoint_lev?, etc.
2271    o alternative ctrl/cost with tr1 or ptracer
2272    o new comlev1_bibj_ptracers
2273    o new ptracers.flow
2274    o made ptracers_forcing same as external_forcing_s
2275    o added verification for adjoint with ptracers
2276      - adm. grdchk fail so far
2277      - tlm. grdchk OK
2278      - checked tapelev/comlev recomputations: OK
2279    <<<checkpoint51b_pre
2280    
2281    checkpoint51a_post
2282    o added code for biogeochemistry package
2283      - new pkgs: dic, gchem
2284      - new subroutine in ptracers
2285    o modify code for biogeo packages
2286      - in model/src and pkg/ptracers
2287    
2288    checkpoint51
2289    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2290      - autodiff, ctrl, exf, grdchk, seaice
2291      kept separate packages
2292      - cost, ecco, obcs
2293    o updating verification/internal_wave, verification/lab_sea
2294      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2295    
2296    checkpoint50i_post
2297    o Preparing next differentiable checkpoint and sync
2298      of MAIN vs. ecco-branch
2299      - 1st step: this one is differentiable
2300      - 2nd step: next(! not this) checkpoint will have updated packages
2301                  from ecco-branch)
2302    
2303    checkpoint50h_post
2304    o new package "land": provide surface BC for AIM.
2305    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2306    o AIM: use true log-P extrapolation for near surface temp (= as in
2307        F.Molteni paper) ; update aim.5l_cs output.
2308    o New variable in PARM03 for more flexible pickups
2309    o somewhat cleaned package initialisation sequence for
2310      ctrl/ cost/ ecco/ in packages_... routines
2311    
2312    checkpoint50g_post
2313    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2314      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2315      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2316        made the default because of faster convergence than ADI
2317    
2318    checkpoint50f_post
2319    o exf totally restructured
2320      - replaced all exf_set_ routines by one generic exf_set_gen.F
2321        and made sure it's still differentiable
2322      - split exf_getffields.F into new exf_bulkformulae.F
2323      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2324      - updated adjoint/makefile and relevant verif. accordingly
2325    
2326    checkpoint50f_pre
2327     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2328          + change Evap over land. (update aim.5l_cs output)
2329     o added missing .cvsignores and made uniform across expts
2330     o changed configuration of tidal_basin_2d expt
2331     o added pkg/debug functions for tracing code in fatal crashes
2332     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2333     o new fn in pkg/monitor to stop model if solution grows too big
2334     o removed lots of single quotes from comments
2335    
2336    checkpoint50e_post
2337    o make KPP work with PTRACERS
2338     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2339       nearly a copy of kpp_transport_s
2340     - there is no analogue to SurfaceTendencyS, so I have to use
2341       gPtr(of the surface layer) instead
2342    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2343    checkpoint50e_pre
2344    
2345    checkpoint50d_post
2346    o change kpp output from multiple-record state files to single-record state
2347      files analogous to write_state.F
2348    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2349      analogous to the cg2d-related output.
2350    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2351      so that writing to internal file fn (with length 512) fails.
2352    checkpoint50d_pre
2353    
2354    checkpoint50c_post
2355    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2356    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2357    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2358    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2359    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2360    
2361    checkpoint50c_pre
2362    Merging from release1_p13:
2363    o bug fix for pkg/seaice dynamic solver
2364    o Added SEAICE_initialHEFF to pkg/seaice
2365    
2366    checkpoint50b_post
2367    o store u*,v* in gU,V instead of in guNm1,gvNm1
2368    o in order to put the momForcing out of the Adams-Bashforth:
2369      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2370      to timestep.F
2371    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2372    o re-generate output for highly sensitive test-exp:
2373       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2374    
2375    checkpoint50b_pre
2376    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2377    o corrected CPP option mismatch in exf_Bulk... functions for case
2378      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2379    
2380    checkpoint50a_post
2381    o Bug fix for merging between c50 and KPP.
2382      ikey was passed from thermodynamics to kpp_calc via
2383      common block rather than being recomputed in kpp_calc,
2384      in contradiction with new key itdkey.
2385      New key ikppkey created, and tamc.h headers updated.
2386    
2387    checkpoint50
2388    - 2nd step of merge with ecco-branch:
2389      merge changes in ecco-branch back into main trunk
2390    - bug fix in find_alpha
2391    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2392    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2393    - merged some sliced AD support routines
2394    
2395    checkpoint49
2396    merged from ecco-branch:
2397    o exf:
2398      - Enable initialisation of forcing fields to constant
2399        (runtime) values.
2400      - in exf_getffields.F
2401        Reduce i-/j-loop to interior domain, discarding overlaps.
2402        That also fixes wrong TAF-key computations for key_1, key_2
2403        with bulf formulae.
2404      - exf_init.F modify #ifdef for exf_init_evap
2405      - exf_getffieldrec.F, ctrl_getrec.F
2406        The following INT-usages are not safe:
2407          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2408          fldcount = int(fldsecs/fldperiod) + 1
2409        and were modified.
2410    o autodiff: checkpoint_lev...
2411      - updated storing for bulk formulae (some arrays were missing)
2412      - added state for seaice package
2413      - synchronized with main branch
2414    o DIVA:
2415      Modif.s in
2416      - the_main_loop.F
2417      - the_model_main.F
2418      and added cost_final_restore.F cost_final_store.F
2419      o With these changes, it is possible to fully separate
2420        the first forward run to compute the cost function (mdthe_main_loop)
2421        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2422        into separate model executions.
2423        This enables better tuning of DIVA to given queue sizes.
2424      o Loss of cost function value in consecutive DIVA runs is
2425        fixed by storing to 'costfinal' file.
2426      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2427        beginning/end of adjoint integration is accounted for.
2428      The current changes apply to TAF-1.4.26.
2429      TAF has one remaining bug, requiring one manual change
2430      (see MITgcm manual).
2431    o cal: synchronized between MAIN and ecco-branch
2432    
2433    checkpoint48i_post
2434    o Changes to restore differentiability of code w.r.t. previous tag
2435      (mostly adding new routines to make list and replacing
2436      pressure by totPhiHyd).
2437    o Updated and merged grdchk package
2438      - has both ADM and TLM checks
2439      - works for single- and multi-proc.
2440      - output cleaned
2441      - worked successfully for parallel DIVA
2442    o genmake:
2443      - Adding -platform=SP4
2444      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2445    o Modif. for DIVA:
2446      ctrl_unpack should not be called in intermediate DIVA interval.
2447      (similar thing would apply for active files such as
2448      tbar, sbar, psbar, which should not be reinitialised;
2449      only relevant for ecco-branch)
2450    
2451    checkpoint48h_post
2452    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2453    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2454    o Added SEAICE_initialHEFF to pkg/seaice
2455    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2456    
2457    checkpoint48g_post
2458    --- EOS:
2459    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2460      store total Potential in totPhyHyd for diagnostics & EOS.
2461    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2462    --- Pressure/geopotential gradient:
2463    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2464    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2465      ( changes results of global_ocean_pressure )
2466    o NLFS + z-coord.: add eta*Rho' contribution.
2467    o accurate phiHyd when using interface-W at the middle between 2 centers
2468     ( changes results of ideal_2D_oce )
2469    o includes r* 2nd term in potential gradient.
2470    
2471    checkpoint48f_post
2472    Merging from release1_p12:
2473    o Modifications for using pkg/exf with pkg/seaice
2474      - improved description of the various forcing configurations
2475      - added basic radiation bulk formulae to pkg/exf
2476      - units/sign fix for evap computation in exf_getffields.F
2477      - updated verification/global_with_exf/results/output.txt
2478    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2479      (SBO) core products, including oceanic mass, center-of-mass,
2480      angular, and bottom pressure (see pkg/sbo/README.sbo).
2481    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2482      to avoid negative values in shallow regions.
2483      - updated verification/natl_box/results/output.txt
2484      - updated verification/lab_sea/results/output.txt
2485    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2486    o Added useSingleCpuIO option (see PARAMS.h).
2487    o Updated useSingleCpuIO option in mdsio_writefield.F to
2488      work with multi-field files, e.g., for single-file pickup.
2489    o pkg/seaice:
2490      - bug fix in growth.F: QNET for no shortwave case
2491      - added HeffFile for specifying initial sea-ice thickness
2492      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2493    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2494      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2495    o pkg/seaice:
2496      - adjoint-friendly modifications
2497      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2498    
2499    checkpoint48e_post
2500    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2501    o dynamics: change definition of computational domain & adapt mom_fluxform
2502      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2503    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2504        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2505        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2506        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2507        inverted_barometer solid-body.cs-32x32x1
2508      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2509    
2510    checkpoint48d_post
2511    o in preparation for r*:
2512     a) use pre-computed gradient of hydrostatic potential:
2513        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2514     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2515        => affects results of glob_oce_pressure (different truncation error)  
2516      update output.txt of ideal_2D_oce & global_ocean_pressure
2517    
2518    checkpoint48d_pre
2519    o in preparation for r*:
2520      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2521      pass the 2 comp. of the grad. as arguments to momentum S/R.
2522      but for the moment, only used if it does not change the results.
2523    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2524    
2525    checkpoint48c_post
2526    Modifications in treatment of initial flux forcing controls
2527    to avoid extra storing of flux fields.
2528    
2529    checkpoint48c_pre
2530    o Added tidal_basin_2d experiment (currently 1D!)
2531    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2532    
2533  checkpoint48b_post  checkpoint48b_post
2534  o r* coordinate added in #ifdef NONLIN_FRSURF block.  o r* coordinate added in #ifdef NONLIN_FRSURF block.
2535   (modification to pressure gradient not yet implemented)   (modification to pressure gradient not yet implemented)

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