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revision 1.38 by heimbach, Tue Apr 10 22:35:24 2001 UTC revision 1.839 by mlosch, Tue Jun 19 12:39:54 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     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
9     - fix bug in metric terms of u-equation in LSR solver (implicit part),
10       changes verification/lab_sea
11     - rearrange implicit part of u-equation in LSR solver to make it easier to
12       read, understand, and debug. This causes changes at the truncation level.
13     - fix (serious) bug in the boundary conditions (sign error in the implicit
14       part) of the LSR solver. Changes all LSR results.
15    o pkg/smooth: addition to model/src and pkg/ctrl so allow
16     initialization of pkg/smooth and application to control vector
17    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
18    o dependencies: pkg/profiles requires pkg/cal
19    o pkg/profiles:
20     - added option ALLOW_PROFILES_GENERICGRID
21         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
22         that interpolation information (grid points and coefficients) is provided
23         within the netcdf input files.
24         -> sample matlab scripts can be found in MITgcm_contrib/gael
25         that allow you to prepare netcdf input files.
26     - also modified: cleaner include statements, cleaner error print statements,
27       cleaner stops when error, and more tests of the netcdf input files consistency.
28    
29    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
30    o pkg/seaice:
31     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
32       requires a new routine: seaice_diagnostics_fill.F
33     - make sure that seaice does not move if not forced (pressure replacement
34       method, Hibler and Ip, 1995), changes results
35     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
36     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
37       It is turned off by default (=-1.), because it changes the results.
38     - make it possible to read AREA from a file, too.
39    
40    checkpoint59c
41    o add S/R and diagnostics for oceanic mixed-layer depth
42    o move GMRedi call after all vertical mixing schemes (including KPP)
43    o pkg/thsice:
44     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
45      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
46    o pkg/obcs:
47     - bug fix for balance code
48    o pkg/seaice:
49      - allow values of SEAICE_elasticParm > 1
50      - add new parameter SEAICE_evpTauRelax as an alternative
51        to SEAICE_elasticParm
52      - make lsr boundary conditions free slip (by default), changes result
53      - add code for no slip boundary conditions for lsr
54      - set minimum of zeta to zero (and not 4e8) (changes results)
55      - add a cap on AREA after advecting AREA if seaice_growth is not called
56    o change calculation of Visbeck K:
57      - no longer depend on tapering scheme; instead, compute slope (limited
58        by GM_maxSlope). this is equivalent to what was comuted before with
59        clipping or linear tappering.
60      - fix vertical averaging (wrong by 1/2 level)
61      - leave the old version (but will not be maintained) within
62        #ifdef OLD_VISBECK_CALC / #endif
63      - update output of exp. ideal_2D_oce
64    o change error catch in calc_r_star to improve vectorization
65    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
66      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
67    o adjoint:
68      Re-organized adjoint checkpointing according to Matt Mazloff
69      (but with modifs/completions/cleanups)
70      Storing is now bundled into large arrays to optimized I/O
71      (and second step in cleanup of the_main_loop)
72    
73    checkpoint59b
74    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
75      - export/import (between ocean & coupler) fields needed for ocean DIC.
76    o pkg/seaice:
77      - get rid of three more exchanges seaice_calc_viscosities (required
78        different loop boundaries in seaice_lsr and seaice_ocean_stress)
79      - bug fix in seaice_ocean_stress (update of lab_sea required)
80      - reduce loop boundaries to necessary minimum also in seaice_evp
81      - go back to the old way of computing deltaC/Z as the adjoint likes that
82        better
83    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
84      passive tracer to an Age Tracer) + update output.txt
85    o pkg/exf:
86      - implement A-grid / C-grid selection for wind-stress input files.
87      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
88      for now, in exf_bulk_largeyeager04.F only :
89      - change implementation for case where windspeed + 2. components wind-stress
90        are read-in. AND use rhoConstFresh to convert evap.
91    o pkg/seaice:
92      - use correct EXCH_UV for wind-forcing (on A-grid).
93      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
94        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
95    o pkg/exf:
96      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
97      EXF_INTERPOLATION:
98      - merge global_with_exf/code version of exf_interp_read.F
99        to the main code ;
100      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
101        reading the file ; Important: This options needs to be defined to recover
102        previous code.
103        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
104      - no longer loose real*8 precision along the way when using exf_iprec=64.
105    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
106      - change discretisation of evp-solver in order to avoid another exchange
107        (changes lab_sea) and clean up a little
108      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
109        help the adjoint (this also changes the results slightly)
110      - add a few "_d 0" where they had been missing in seaice_evp.F
111      - cleaning up: remove unused seaice_calc_rhs.F
112    o pkg/exf: some cleaning-up:
113      - change various "constants" into runtime parameters
114      - cleaned-up Large&Yeager04 routine which should eventually
115        replace exf_bulkformulae.F (changed names of S/R and CPP)
116        and merged various ALLOW_ATM_WIND options
117     only used with thsice pkg (in thsice_get_exf.F):
118      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
119        which are used when useStabilityFct_overIce=TRUE (= the default)
120      - change default values of ice & snow emissivity and scale downward LW
121        by ice & snow emissivity.
122    o pkg/thsice:
123     fix few little problems, in thsice_calc_thickn.F:
124      - growth vertically (and not laterally) if iceFrac == iceMaskMax
125      - melt only laterally if hIce < hThinIce (as the comments say)
126      and in thsice_extend.F:
127      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
128      - start to form ice as soon as the minimum ice-volume is reachable.
129     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
130      and cpl_aim+ocn
131    o pkg/kpp
132     - move computation of surface related input fields to KPP into a new
133       subroutine kpp_forcing_surf.F
134     - remove wrong (within bi,bj loops) EXCH calls.
135     - little cleaning (add argument myThid in last position, cvs header ...)
136     - for now, fix conservation problem by exchanging KPPviscAz (may not
137       be the best fix)
138    o pkg/seaice
139     - check for inconsistent evp parameter/cpp-flag combination
140     - remove leftover errIO flat for obsolete name list error handling
141    o OpenAD
142     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
143    
144    checkpoint59a
145    o pkg/seaice: some parameter clarifications and a little bit of clean up
146    o pkg/thsice: rename run-time parameters:
147       himin       -> hIceMin
148       himin0      -> hThinIce
149       hihig       -> hThickIce
150       i0          -> i0swFrac
151       transCoef   -> bMeltCoef
152       frac_energy -> fracMelting
153      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
154       with default values (for now) that do not change the results.
155      remove old version of thsice vars advection in pkg/seaice.
156    o in FFIELDS.h:
157      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
158      - make pLoad & sIceLoad always available (but still only used if
159         ATMOSPHERIC_LOADING is #define).
160    o pkg/kpp: replaced _KPP_RL with _RL
161    o bug fixes for vertical diffusivity computations when both KPP and
162        3D diffusivity arrays are used.
163    o pkg/seaice: fix bug in evp solver, while doing that
164      - change (improve?) discretization of stress computations for both
165        cgrid-lsr and evp solver
166      - add a new routine to compute strain rates
167      - the above changes lab_sea results
168      - add no slip conditions for evp solver (off by default), lsr-version
169        may follow
170      - fix exchange for shear at Z-points (does not change lab_sea)
171      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
172        (to force the user to pick a time step since there is not "safe" way
173        of choosing it)
174      - add principal stress diagnostics
175      - rearrange fields for evp a little to avoid having to call a: too many
176        exchanges and b: exchanges for stress trensor components which we do
177        not have.
178      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
179        of evp, complete rewrite for lsr case (latter is does not yet work
180        in all cases)
181    o pkg/kpp: add code to have mixing in shelf ice caverns
182      - add myThid to all kpp routines (long overdue)
183    
184    checkpoint59
185    o pkg/exf:
186      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
187        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
188      - move exf header files from lower_case.h to UPPER_CASE.h ;
189        add missing cvs Header & Name
190      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
191      - add namelist param. selectStressGridPosition, exf_monFreq
192      - retire many _CLIM routines, and remove data.exf_clim
193        + params moved to data.exf
194        + climsst, climsss now handled by exf_set_gen, i.e.
195          climss?period=0 refers to constant field,
196          climss?period=-12 to monthly forcing
197      - split up namelists in data.exf
198    o pkg/seaice:
199      - remove seaice_exch and seaice_exch_uv
200      - remove superfluous exchange of theta
201      - add myThid to seaice_budget_ocean/ice
202      - add new interface for atmospheric wind forcing (C-grid only)
203        + new routine
204        + two new field (taux, tauy for stress over ice)
205        + removed one global field (DAIRN) for C-grid case only
206    o pkg/thsise
207      - 2nd set of modifs for thsice adjoint in conjunction with exf
208    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
209    
210    checkpoint58y_post
211    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
212      vertical diffusivity, similar to that in MOM4; turned on using
213      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
214      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
215    o Added capability for 3D specification of background vertical diffusion
216      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
217      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
218      "data" file that contains the 3D vertical diffusivity coefficients.
219    o ice dynamics (pkg/seaice) with thsice thermodynamics:
220      - add code within pkg thsice to advect & diffuse sea-ice fields
221      similar to (and will replace) what has been added in  seaice_advdiff.F,
222      but: - conserving Mass, Heat & Salt.
223           - better when using non-linear advection scheme (not yet fully tested)
224           - can also be used in atmospheric set-up (for now, only the diffusion).
225    
226    checkpoint58x_post
227    o IO option for global-file compact format:
228      - add options when generating topology (utils/exch2/matlab-topology-generator)
229      - add I/O capability (pkg/mdsio).
230      - adapt utils/matlab/rdmds.m to read this format.
231      for now long-line format not yet supported by pkg/mdsio (& exch2).
232    o shelfice: add a few diagnostics
233    
234    checkpoint58w_post
235    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
236      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
237      (and replace horiVertRatio in NH code).
238      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
239                         and tutorial_plume_on_slope (sensitive to truncation)
240    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
241      directly to drive seaice model (C-grid only)
242    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
243     - reintroduce computation of wind from stress,
244     - compute tau (in exf_bulkformulae.F) from windstress averaged to
245       mass points to avoid tau = 0
246     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
247    o rdmnc.m: make it work with "global" files created with gluemnc
248    o rdmnc.m : some improvements in dealing with singleton dimension
249      (tested on all testreport mnc output files).
250    o genmake2: disable pkg/profiles if netcdf test fails.
251    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
252    o move call to cal_readparms up to make calendar parameters/variable available
253      to all packages
254    
255    checkpoint58v_post
256    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
257      useDynP_inEos_Zc tested.
258    o pkg/exf: changes to properly interpolate/mask/scale initial fields
259    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
260      and portions thereof.  See read_cs.txt for description and examples.
261    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
262      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
263      following the great-circle arc between those 2 points.
264    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
265      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
266    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
267     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
268     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
269     - still needs work (not working with some options ; efficiency to improve)
270       and serious testing.
271     - use this scheme for temperature & salinity in 2 advection test exp.:
272       advect_xy & advect_xz, respectively.
273    
274    checkpoint58u_post
275    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
276    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
277    o testreport: add option "-skipdir" to skip some test.
278    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
279      momentum calculation.
280    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
281    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
282      remove checkpoint.F and the_correction_step.F (no longer used);
283      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
284    o add option (linFSConserveTr) to correct for tracer source/sink due to
285      Linear Free surface
286    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
287    o pkg/thsice: fix reading mnc-pickups
288    
289    checkpoint58t_post
290    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
291    o pkg/mdsio:
292     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
293       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
294       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
295     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
296     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
297       either MDS_READ_FIELD or MDS_WRITE_FIELD )
298     - new S/R (to replace MDSWRITEMETA), which allows to write more
299       informations (variable names, time ...) to meta files.
300     - modify rdmds.m to give back the meta file content.
301    o pkg/diagnostics: change vertical interpolation to be safer, and more
302       flexible (define p-levels to interpolate to in data.diagnostics);
303      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
304       diagnostic pointer.
305    o pkg/seaice: more cleaning up of seaice_growth, added many comments
306    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
307    o fix multi-category seaice:
308     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
309       SEAICE_MULTICATEGORY
310     - fix short wave heat flux
311    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
312       and allow to use EVP solver. Change forward lab_sea: test both EVP
313       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
314    o Initial check-in of lab_sea adjoint
315      (very similar to natl_box_adjoint/code_seaice)
316      * used C-grid and EVP solver
317      * used KPP, GM/Redi
318      * uses inAdExact=.TRUE.
319      * gradient checks fail for both ADM and TLM
320        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
321        f.d. gradients actually seem more problematic than ADM, TLM gradients;
322        issue is related to forward mismatch between g77 an ifort
323    o pkg/seaice: overhaul of thermodynamics
324     - growth.F and groatb.F are replaced by new routine seaice_growth.F
325     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
326     - move a few global fields out of SEAICE.h into seaice_growth.F and
327       make them 2D (FICE/QNETO/ ...)
328     - remove FO (it is the same as QNETO)
329     - introduce a few local fields to avoid modifying external fields such
330       as atemp, etc.
331    
332    checkpoint58s_post
333    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
334      changed exf_set_gen.F so that
335        genperiod=0 means input file is one time-constant field and
336        genperiod=-12 means input file contains 12 monthly means
337    o CG2D: use pre-computed solver main-diagonal (stored in common block);
338      this affects truncation error ; generate new output file for exp. which
339      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
340        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
341        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
342        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
343        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
344        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
345    o start implementation of deep-atmosphere and anelastic formulation
346    o verification: remove 2nd copy of input files and use script "prepare_run"
347      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
348    o mom_common/vecinv/fluxform: fix a few initialisation isssues
349    o profiles: fix for multithreaded case
350    
351    o diagnostics: rename few diags:
352      s/'PRESSURE'/'RCENTER '/g
353      s/'TICE    '/'oceFreez'/g
354      s/'TAUX    '/'oceTAUX '/g
355      s/'TAUY    '/'oceTAUY '/g
356      s/'SWFLUX  '/'oceQsw  '/g
357      s/DIFx/DFxE/g
358      s/DIFy/DFyE/g
359      and add few ocean-forcing diagnostics:
360      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
361    o modifications to pkg/seaice/growth.F and budget.F, which change results of
362      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
363      as actual snow thickness.  It now refers everywhere to effective snow
364      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
365    
366    checkpoint58r_post
367    o modifications to pkg/seaice/growth.F, which change results of
368      lab_sea experiment: fixes pertain to melting snow over open water, to
369      masking EVAP under sea ice, and to using the correct AREA variable for
370      computations of EVAP, PRECIP, HSNOW, and GHEFF
371    o add ability to read bathy, salt, and theta using MNC (off by def)
372    o add flooding algorithm and advection of HSNOW for pkg/seaice;
373      both are turned off by default and do no change any results
374    o seaice advection with pkg/thsice: a step toward the use of non-linear
375      advection scheme, but #ifdef or commented out for now (requires more EXCH).
376    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
377      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
378      in natl_box (affects results @ truncation level: update output.txt)
379    o multi-threading and IO:
380      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
381      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
382        (needed to work with SingleCpuIO): tested in all verif. exp.
383    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
384      affects the results (but none of the verification test uses this scheme).
385    o Adding some pkg/diagnostics capability to pkg/seaice
386      (will certainly be subject to changes)
387    o ctrl: adding new control variables:
388      lwflux, lwdown, evap, snowprecip, apressure, runoff
389    
390    checkpoint58q_post
391    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
392      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
393      high_res_cube configuration by 4% on Columbia.
394    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
395      add (in global_with_exf/code) a version of EXF_INTERP_READ without
396      dynamical allocation (seems to work in multi-threaded).
397    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
398      single CPU io) so that TAF does not have to see EESUPPORT.h
399    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
400    
401    checkpoint58p_post
402    o obcs: stop if obcs is used with useCDscheme = .true.
403    o shelfice:
404     - fix a sign error so that no slip at shelfice interface works
405     - remove stop for combination non-hydrostatic code and shelfice. That does
406       not mean, that the results are correct, but at least they are numerically
407       stable
408    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
409    o added adjoint exch routined for all exch*3d* routines
410      and updated flow directives
411    
412    checkpoint58o_post
413    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
414      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
415    o change controling S/R for writing pickup file (new S/R do_write_pickup)
416      and clean-up reading/writing of pickup files.
417    o fix local version of read/write pickup (NH part) in rotating_tank/code
418    o simplify EXCH interface:
419     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
420     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
421    o added the regrid package
422    o shelfice:
423     - add a simple boundary layer scheme to reduce noise
424     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
425    
426    checkpoint58n_post
427    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
428       local variable (not in common block).
429    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
430      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
431      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
432        to work with SingleCpuIO.
433    o add "_d 0" to real constant of pkg/cfc subroutines ;
434       update exp. cfc_exemple & tutorial_cfc_offline output files.
435    o multi-threading and IO:
436      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
437        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
438      - barrier before and after reading.
439      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
440      - avoid using MDS_WRITELOCAL for LAND pkg output.
441      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
442        common-block variables ; Allows multi-threading with master-thread IO.
443    o change default MAX_NO_THREADS from 32 to 4 ;
444      and stop cleanly when MAX_NO_THREADS is too small.
445    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
446    
447    checkpoint58m_post
448    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
449       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
450    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
451       keep global_ocean.90x40x15 (for AD testing) with former secondary test
452       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
453    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
454        add MITgcm_tutorials (= code + all the tutorials)
455    o ecco, option to compute cost for total ssh (mean+anom)
456    o consistent with addition of ptracer and ssh in pkg/profiles
457    o profiles: adding ptracer and ssh
458    o testreport: change multi-test output-file name
459      (from output.txt.{name} to output.{name}.txt)
460    o profiles: now ok for mutli-tiles case
461    o seaice: add 4 parameters for different advection schemes for area,
462      (effective) seaice thickness, enthalphy, and snow height. Their default
463      is the standard parameter SEAICEadvScheme
464    o calc_gw:
465     - add cosFacU in zonal viscous flux (harmonic.visc.).
466     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
467       of tutorial_plume_on_slope.
468    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
469    o calc_gw: true flux-form, account for horizontal grid spacing.
470      update rotating_tank results, but not plume_on_slope (affected at
471      truncation level, 11 digits).
472    
473    checkpoint58l_post
474    o calc_gw:
475     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
476     - remove side-drag for now (need to fix it); update plume_on_slope results.
477     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
478    o commit code to make SST/SSS weights spatially variable
479      (based on either variable in-situ or variable initial T/S weights)
480    o pkg/ecco:
481      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
482        now based on horizontally varying weights wthetaLev, wsaltLev
483      * cost_averagesflags now returns year indices in addition to day, month
484      * sflux balance is performed on annual basis
485        (sflxumm, sfluxmm2, bal_sfluxmm)
486      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
487        including separate counting and multipliers
488    o pkg/rbcs
489      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
490    
491    checkpoint58k_post
492    o testreport:
493     - always build in dir. "build" (if not there, mkdir build instead of building
494       & running in input)
495     - run in dir run (if it exists), in build otherwise.
496     - call prepare_run (if input/prepare_run exists)
497     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
498    o pkg/exf modifications to interpolation and rotation routines for more
499       reasonable treatment of North Pole singularity: for tracers North Pole
500       value is set to northernmost zonal-mean value, for zonal velocity it is
501       set to zero, and for meridional velocity it is set to northernmost value.
502    o pkg/exf/exf_check_range.F
503     - add tile index to diagnostics and move stop statement to the very
504       end of the routine.
505    o pkg/diagnostics: (diagnostics_main_init.F)
506      define title of isomorphic variables according to the current config.
507    o pkg/thsice with pkg/seaice dynamics:
508    - fix domain of computation (interior only, required for exf) and do exchanges
509    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
510    o towards a standard way of dealing with multi-threading in MONITOR
511      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
512    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
513       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
514    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
515    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
516    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
517       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
518    o tracer advection:
519     - clean-up and simplify calc_common_factors.F
520     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
521       advection subroutine (but still not used within DST advection S/R)
522    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
523    
524    checkpoint58j_post
525    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
526      from file (collects calls previously in FORWARD_STEP)
527    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
528    o adjoint store dir. adjusted accordingly
529    o genmake2
530      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
531    
532    checkpoint58i_post
533    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
534      on wind stress (SEAICEstressFactor defaults to 1.)
535    o Total number of Timers is finite (<=40): comment out 2 non-essential one
536      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
537    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
538      on CS-grid: no longer loosing mass.
539    o exf & curvilinear-grid: no longer modify longitude xC & xG.
540    o pkg/ggl90: fix sloppy output and fix a bug
541    o pkg/seaice: added SEAICEuseEVPpickup parameter
542      - Set to false in order to start EVP solver with
543        non-EVP pickup files when using SEAICEuseEVP
544      - fix sign error in diffusion in seaice_calc_rhs
545    
546    checkpoint58h_post
547    * Modifications for bottom topography control
548      o replace hFacC by _hFacC at various places
549      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
550      o add non-self-adjoint cg2d_nsa
551      o update autodiff support routines
552      o re-initialise hfac after ctrl_depth_ini
553      o works for 5x5 box, doesnt work for global_ocean.90x40x15
554    * Adding verification for 5x5 box (4-layer) bottom topography control
555    
556    checkpoint58g_post
557    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
558       used for mean seasonal cycle, mean diurnal cycle); add an example
559       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
560    o pkg/ggl90:
561      - add parameter (minimum surface kinetic energy)
562      - fix bug (avoiding division by zero)
563    o couple pkg/thsice to pkg/seaice:
564      - modify advection in seaice to accomodate new scalar fields to be advected
565      - only muliDimAdection scheme work with seaice/thsice
566      - mapping of thsice-variables to seaice-variables, back and forth
567      - does not break the verification experiments, but does not give the
568        desired results either
569    o pkg/seaice
570      - make (default) second order advection a bit less confusing?
571    
572    checkpoint58f_post
573    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
574      to pkg/seaice):
575      - new routines thsice_map_exf and thsice_get_exf provide the interface
576      - add an additional formal parameter to thsice_solve4temp
577    o pkg/exf:
578      - add new fields wspeed, snowprecip (to be able to couple to thsice)
579      - correct Stefan-Boltzmann constant
580      - new parameter for longwave surface emittance
581      - separate some stuff from exf_bulkformulae into new routines  
582        exf_radiation, exf_wind
583      - add new parameters and constants: longwave emissivity for ocean, ice
584        and snow, evaporation parameters over ice
585      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
586        either wind from stress or stress from wind
587    o pkg/thSIce:
588    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
589    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
590       and THSICE_CALC_THICKN
591    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
592    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
593      to make debugging easier.
594    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
595    o pkg/bulk_force:
596      - clean-up comments and parameters ;
597      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
598    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
599      generate new output for test-experiment: aim.5l_cs.thSI
600    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
601      testreport accordingly
602    
603    checkpoint58e_post
604    o SEAICE_CGRID adjoint done
605    o R_STAR adjoint implemented.
606      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
607      * need to sort out init. of h0facc, etc.
608    o Make pkg/profile fully independent of ecco,cost, etc. stuff
609      to be able to use it in pure forward.
610    
611    checkpoint58d_post
612    o upgrade simple test-experiment to tutorial example:
613     step.1: duplicate the experiment and (step.2) will remove the old copy.
614      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
615      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
616      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
617      tutorial_global_oce_biogeo    <- copy of dic_example
618      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
619      tutorial_plume_on_slope       <- copy of plume_on_slope
620      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
621      tutorial_global_oce_optim     <- empty for now (David ?)
622      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
623     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
624    o correct a sign problem in cost_scat.F
625    o obcs and ptracers: fix boundary conditions for advections schemes
626      with larger stencil
627    o thsice adjoint: start
628    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
629      completeness
630    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
631      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
632    o ptracers adjoint:
633      * avoid extensive recomputatations
634      * fix missing re-init. of gptr (missed by TAF)
635    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
636      me to turn off the excessive output to STDOUT that this package produces
637    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
638      and add those terms in Vector-Invariant formulation.
639    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
640      if the control period (xx_hfluxperiod etc) is 0
641    o in profiles pkg, clean routines and fix details
642    o in ecco pkg, reading ssh data:
643      fix problem in case the model does not start at iter0=0
644    o fix mnc-pickup/restart for ptracers
645    o new package prifiles:
646      code to compute profile-based cost by Gael Forget
647      (modifs in ecco, ctrl, autodiff)
648    o Benign bug fix in initialization (spotted by M. Mazloff) of
649      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
650    
651    checkpoint58c_post
652    o adjoint: finish NLFS adjoint and provide reference output in
653      verification/global_ocean.90x40x15/results_ad_nlfs
654    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
655      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
656      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
657      with SEAICE_CGRID defined.
658    o move calendarDumps from "data" to "data.cal" and clean-up the code
659      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
660    o add useEXF & useCAL flags (for now, set in hard-coded way)
661    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
662      (were missing in NH mode, and wrong in quasihydrostatic mode).
663      waiting for Chris updated version of calc_gw to add those CALLs.
664    o fix bug in quasihydrostatic S/R ;
665      add a test for this option: global_ocean.90x40x15.qshyd
666    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
667      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
668    o add on/off flag useOffLine for package OFFLINE
669    o seaice:
670      - modify advection so that it works also on the C-grid
671      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
672        problem in multi-tile runs with C-grid
673      - add flags for clipping ice velocities and/or masking solver forcing
674      - fix drag (ocean on ice) formulation and a bug that caused noise in the
675        C-grid solver
676      - added a few comments to seaice_diffusion.F
677      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
678        are now exclusive)
679      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
680        required re-ordering the code a little:
681       + make DAIRN global variable (defined in SEAICE)
682       + move computation of the viscosities eta and zeta into a new separate
683         routine (because I need to recompute them in seaice_ocean_stress.F)
684    
685    checkpoint58b_post
686    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
687      update output.txt of exp. aim.5l_cs.thSI
688    o various mnc cleanups and improvements:
689      + shrink lookup tables by factor of ~4
690      + better error reporting when running out of lookup space
691      + able to handle longer path/file names (up to 500 chars)
692    o adjoint:
693      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
694      - TBD: "hidden" mom_vecinv recomp. in dynamics
695    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
696     (allow to differentiate between forcing components using new integer flags:
697      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
698     and add new flag to put Dissipation tendency out of Adams-Bashforth.
699    o ecco
700      - enable trend removal from SSH anomaly obs.
701    o adjoint
702      - a fix for PmEpR when #undef EXACT_CONSERV
703      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
704      - try to fix "hidden" recomp. in forward_step for NLFS
705        (NLFS seems broken sometimes after I checked it in)
706    o seaice:
707     - add c-grid version of the dynamic solver:
708       + three new routines that are the c-grid substitute lsr, dynsolver
709         and ostres
710       + put a few fields that were local to dynsolver into global common
711         blocks, so that I can move the computation of stresses etc into
712         seaice_lsr (saves coding but may break the adjoint).
713     - replace more hardwired parameters by runtime parameters
714     - add ice masks that mask the rhs of the implicit solvers where there
715       is no ice (commented out in seaice_dynsolver, because i am not sure
716       if this works properly), eventually this should replace the clipping
717       of ice velocities in seaice_dynsolver to +/-40cm/s.
718    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
719      include it only where its needed
720    o move balancing of fluxes before the call of external_forcing_surf
721    o seaice:
722      - correct units of turning angles (now they are really in degrees)
723      - move computation of GWATX/Y out of main routine into dynsolver
724      - initialize GWATX/Y in seaice_init
725    o Apply mask on Fresh-Water flux (needed for SSH forcing).
726      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
727    o seaice: add runtime flags for turning angles (default to zero)
728    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
729      and trend from exf forcing and ctrl control adjustments
730    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
731      (since checkpoint57x_post)
732    o change the default rotation period to 86164.s = the Earth rotation
733    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
734      and based on a reference stratification. Tested within hs94.cs-32x32x5.
735    o seaice advection: add code for choosing between the default (2nd order
736      central differences) and multiDim advection schemes provided by
737      pkg/generic_advdiff
738    o seaice:
739      - removed all references to SEAICE_GRID.h fields from
740        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
741        (cubed-sphere configuration will change a little)
742      - grid computations in seaice_init are obsolete now.
743      - cleaned up code a little so that is easier to read (hopefully).
744      - added new (better?) discretizations of default advection and diffusion
745        (turn on with SEAICEuseFluxForm)
746      - replace 1 in 3d global fields by kSurface in growth.F
747      
748    checkpoint58a_post
749    o seaice:
750      - bug fix in advect.F
751    o shelfice:
752      - separate shelfice load anomaly from pload (breaks with time
753        dependent forcing), => introduce constant field shelficeLoadAnomaly.
754        Its default is 0., but it may be computed more cleverly from (unknown)
755        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
756        done offline. A good approximation of the pressure load anomaly is
757        necessary to avoid large initial adjustment processes underneath
758        deep-reaching shelfice.
759      - small fix in ISOMIP shelfice_thermodynamics
760      - add more sophisticated thermodynamics of Hellmer (1989), this is
761        now the default
762      - give a few constants more intuitive names
763    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
764      if bulk formulae are used in long integration (especially EmPmR). Turn
765      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
766      if balancePrintMean, the imbalance that is substracted is printed to
767      STDOUT.
768    o fix bug (typo) in obcs_apply_eta.F
769    o add a new package shelfice which enables us to model the circulation
770      underneath shelf-ice with draughts of hundreds of meters.
771     - works
772     - to do: + include improved thermodynamics
773              + check whether kSurfC (from model/inc/SURFACE.h) can be used
774                instead of new field kTopC
775              + can we use topoFile, Ro_surf and existing code in ini_depth.F
776                instead of new field R_shelfIce and new code in ini_depth.F
777                and ini_mask_etc.F?
778              + adjust vertical mixing schemes?
779    o seaice pkg:
780     - add a cpp-flag to include a simple formula for a salinity dependent
781       freezing point of sea water at the surface
782     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
783       meridional stresses are now different (and hopefully correct)
784    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
785       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
786       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
787    o pkg/diagnostics: add options and parameters for regional-statistics
788       diagnostics ; define regions by reading a region-mask from a file
789       (might add other options later)
790    o pkg/bulk_force:
791     - add option and parameters to use AIM surface-flux formulae.
792     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
793       others forcing fields (defined in PARM05, parameter file "data") are loaded
794       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
795     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
796     - use the right EXCH call for uwind,vwind (to work on CS-grid).
797     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
798       and parameters (note: calcWindStress replaces .NOT.readwindstress).
799     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
800    
801    checkpoint58
802    o add "--embed-source" option to genmake2 which, when the supporting
803      tools can be compiled (as determined by genmake2) will turn on the
804      embed_files package which then embeds the entire MITgcm source code
805      (*.[fFhc] + Makefile) used for the build within the executable
806      - requested by CNH but off by default
807      - adds a paltry <9MB to the mitgcmuv executable in most cases
808      - only writes the output when useEMBEDSRC in eedata is true
809    o clean up 3-dim. relaxation codes:
810      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
811      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
812      * Thanks to Tom Haine for testing!
813    
814    checkpoint57z_post
815    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
816      affects output (@ truncation level) of exp. plume_on_slope ; updated.
817    o fix the pickup behavior for obcs in combination with ptracers
818    o fix a bug in ptracers_external_fields_load
819    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
820      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
821    o transfered surface NH pressure to eta field (if exactConserv).
822    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
823         and update lab_sea output.txt file.
824    o completing 3-dim. relaxation code: additional term
825         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
826      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
827      * At compile time, in "EXF_OPTIONS.h" set
828          #define  ALLOW_CLIMTEMP_RELAXATION
829          #define  ALLOW_CLIMSALT_RELAXATION
830      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
831          tauThetaClimRelax3Dim = 15552000.0,
832          tauSaltClimRelax3Dim  = 15552000.0,
833      * 3 cases:
834          1) Use a constant-in-time 3-dim. field
835          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
836          3) Real-time relax. to time-evolving prescribed field
837    o Adding Laplacian-type smoothness constraint on
838      initial and boundary (forcing) controls (ic, bc)
839      * enable at compile-time via
840        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
841      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
842      * Absolute scale somewhat unclear so far
843      * no area weighting was included since no other cost term does so far
844    
845    checkpoint57y_post
846    First step for a NLFS adjoint
847    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
848    o new init. routines for calc_r_star, calc_surf_dr
849    o still need to deal with ini_masks_etc
850    o testreport seemed happy
851    checkpoint57y_pre
852    
853    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
854    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
855    o add new offset feature to offline pkg (plus minor cleanup)
856    o cfc fixes for final year of integration
857    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
858      be in GCHEM_OPTIONS).
859    
860    checkpoint57x_post
861    o fix testreport Pb in multiple test experiment.
862    o cleanup our namelist syntax in verification:
863      - make it more F95 standards compliant (some work still needed)
864      - allows the vast majority of our tests to work with gfortran
865    o Non-Hydrostatic:
866     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
867     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
868    o Allow to apply AB on T,S rather than on AB(gT,gS):
869     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
870     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
871       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
872     - need a "clever" read_pickup to restart from the other AB formulation
873    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
874    o remove some unused variables (reduces number of compiler warnings)
875    o adjoint
876      * Disable useVariableViscosity for adjoint for time being
877        (there are a number of extensive recomputations)
878      * Initialize certain variables needed for adjoint
879    
880    checkpoint57w_post
881    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
882                 fix the singleCpuIO RS version of MDSWRITEFIELD
883       and add a WARNING if using globalFiles=T with multi-processors.
884    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
885      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
886    o tracer advection scheme:
887      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
888       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
889       was not very convenient).
890      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
891       (further tests needed for the implicit DST & Flux-Limiter schemes).
892    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
893      and sRef for convenience, handy, when you want to initialize
894      ptracers in a large domain with a constant non-zero value. Also,
895      untangle ptracers_init.F a little.
896    
897    checkpoint57v_post
898    o change dome exp. to use variable viscosity in side-drag terms.
899    o remove all the files from the cfc_offline test since they are now
900      incorporated into tutorial_cfc_offline which has been producing
901      identical results for a few days of testing
902    o add new parameter: sideDragFactor to enable half-slip-side BC
903      and change side-drag S/R to use viscosity from mom_calc_visc
904      (can switch back by setting sideDragFactor=0.); affects results at
905      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
906       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
907    o vorticity & strain are now computed without masking, to account for
908      no-slip-side BC in variable viscosity calculation ; mask is applied
909      anyway later on, before computing advection/coriolis terms.
910    o modify exp4 to test new obcs support for reading from external files
911      and for passive tracers
912    o fix behavior of ptracers_monitor when monitor output is written to a
913      netcdf-file; still not independent of monitor.F (writes in the same
914      file).
915    o change default value of tRef (put a uniform, meaningful value for ocean
916      & atmos) and initialize sRef (was missing, as Martin mentioned).
917    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
918      to be proportional to enstrophy dissipation length.  Thus,
919       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
920      This is now consistent with Smagorinsky and with the manual.
921    
922    checkpoint57u_post
923    o OBCS and PTRACERS: add open boundary support for passive tracers
924      - either use homogenous (pseudo) v.Neumann conditions or prescribe
925        OB-values from file; this is not different from the way theta and salinity
926        are treated
927      - however, Orlanski-radiation conditions are not supported, and the model
928        will stop if you use pTracers and Orlanski at the same time.
929      - beefed up the rountine obcs_external_fields_load: now only those open
930        boundary values are overwritten with values from files for which there
931        are really files, otherwise the OB-fields remain untouched. This makes
932        it possible to use different OBs at different ends of the domain (as
933        with EXF)
934    o reduce number of exch calls in shap_filt (s2).
935    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
936      truncation level) 4/5 MLAdjust test results (11&12 digits match).
937    
938    checkpoint57t_post
939    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
940    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
941      same truncation, independent of the face number: affects affects several
942      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
943    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
944      note that biharmonic viscosity + no-slip was not tested in any experiment.
945    o fix bug in non-linear free-surf side-drag ; generate new output for
946      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
947    o make mnc honor the writeBinaryPrec flag for most kinds of output
948    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
949    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
950      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
951    o add brackets in multi-terms sum to get same truncation, independent of
952      the face number (manage to get exactly same value of gU,gV at the cs-edge)
953      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
954    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
955      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
956      a maximum grid-scale Reynolds number.  Also, changes all length calculations
957      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
958      Suggested values of viscosity parameters found in mom_calc_visc.
959      Many new viscosity diagnostics available.
960    
961    checkpoint57s_post
962    o Add clearing-house for viscosity calculations, mom_calc_visc and
963      correct numerous bugs in LeithD and Smagorinsky discretizations.  
964      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
965      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
966      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
967      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
968      The Strain-Tension form is now called with useStrainTensonVisc=.true.
969      ViscAhStrain and viscAhTension are now retired.
970    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
971    o In response to JMC's bug report, genmake2 now ignores any soft-links
972      that it finds in the *current* directory when searching for files.
973      Soft-links found in any other source directories will still work as
974      they did before.
975    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
976      a C routine to unlimit the stack size
977    o mnc-ify pkg/aim snapshot vars
978    o mnc-ify pkg/land as requested by Daniel
979    o various changes to mnc including:
980      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
981      - output can now be grouped so that all files within a group
982          change the ITER portion of their names in lock-step together
983      - can now read ("global") PER-FACE (in addition to PER-TILE) files
984          and works with both EXCH1 and EXCH2 (but needs more testing)
985      - writing works for all verification test cases w/ g77 on Linux
986    
987    checkpoint57r_post
988    o make MNC variable initialization happen earlier
989    o add diagnostics for (almost) each term of the momentum Eq.
990    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
991    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
992    o remove MINIMAL_TAVE_OUTPUT option ;
993      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
994    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
995      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
996    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
997    o add time-dependent SST, SSS control
998    o cost terms in ecco/ modularized (new cost_generic.F)
999    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1000    o new infrastructure for seaice model vs. obs misfits in seaice/
1001      * driver from the_main_loop.F is seaice_cost_driver.F
1002      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1003      * gradient check in Exp. 6a of natl_box_adjoint/
1004    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1005      (see README file)
1006    
1007    checkpoint57q_post
1008    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1009    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1010      - bug was reported by Jean-Michel and Ian Fenty
1011    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1012      update exp. cpl_aim+ocn output.
1013    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1014      Needed for high-res. runs with large global files
1015      to be able to limit tapelev size
1016    o Changed some tests for adjoint:
1017      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1018      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1019      * global_ocean.90x40x15/ back to default 3-level checkpointing
1020    o Modifications to enable scripted COMMON to MODULE conversion
1021      * verification/OpenAD/code/ has necessary scripts and description;
1022      * converts, compiles and runs successfully;
1023    
1024    checkpoint57p_post
1025    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1026    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1027      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1028    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1029    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1030      (was already the case for dissipation with mom_vecinv,
1031       and also the case for grad.PhiHyd when staggered-timeStep)
1032      This will allow to put dissipation out-off the AB time-stepping.
1033     Unfortunately, affects truncation error. Update output of exp. that "fails"
1034      (cg2d matching number) and leave the others for later: front_relax(10),
1035      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1036      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1037    
1038    checkpoint57o_post
1039    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1040      (2) its ready to be documented during the 20050801 DocFest
1041    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1042      for ideal_2D_oce and lab_sea on linux_ia32_g77
1043    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1044      in global1x1_tot/code_seaice_adj to access indices 32, 33
1045      (worth another tag)
1046    
1047    checkpoint57n_post
1048    o adding precip control xx_precip 32
1049    o adding swflux control xx_swflux 33
1050    o Replacing 10 forcing penalty cost routines by 1 generic.
1051    o Implementing partitioning in time-mean and variable adjustment
1052      for atmos. state.
1053    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1054    o in natl_box_adjoint:
1055      * updated exp 1 to 10
1056        (but does not have time-mean vs. variable split results yet)
1057    o updated global1x1/*_seaice_adj/
1058      to incorporate latest changes
1059    o enable useSingleCpuIO for mdsio vector routines
1060      (applies in particular to tapelev I/O)
1061    o removed inefficient K-loop in all active_file*control*.F
1062    
1063    checkpoint57m_post
1064    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1065      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1066    o pkg/exch2: filling of face-corner halo regions is optional
1067      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1068    
1069    checkpoint57l_post
1070     tag before updating tutorials (pre-release-2)
1071    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1072       for output and interpolation of input fields onto model grid)
1073    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1074       Affects results of exp. rotating_tank ; update output.txt.
1075    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1076          and taking the square quantity and/or using a fraction-weight field.
1077    o fix aim_diagnostics_init.F mate numbers.
1078    o add mnc output capability to diagnostics/diagstat and update
1079      our cvsignore files for the ACSII output generated
1080    
1081    checkpoint57k_post
1082    o lab_sea now uses diagnostics package and provides a suite of
1083      new EXF diagnostics output.
1084    
1085    checkpoint57j_post
1086    o exf
1087      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1088        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1089        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1090      * extended diagnostics output
1091        - now includes all EXF variables
1092        - hs, hl moved to common block
1093        - separate S/R for diagnostics, called after ctrl vector is added
1094        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1095        - EXFqnet contains true Qnet (i.e. includes qsw)
1096      * updated verif. lab_sea, global_with_exf
1097      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1098        to ensure that diagnostics sees a true EXFqnet
1099    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1100    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1101      several times with different frequencies.
1102    o mnc-ify the thsice package as requested by Daniel Enderton
1103      - the monitor--MNC output needs work
1104      - many attributes need to be added (most are currently blank)
1105    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1106      - many attributes need to be added (most are currently blank)
1107    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1108    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1109    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1110      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1111         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1112    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1113     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1114    
1115    checkpoint57i_post
1116    o Diagnostics package was changed: diagnostic allocation is now deactivated
1117      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1118    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1119      add 1rst Order upwind vertical Shear.
1120    o add a quick fix for A/B checkpointing in OFFLINE mode
1121    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1122      end-run around the C/Fortran linking horror in eesup/src/timers.F
1123    o added pkg/runclock: allows user to terminate run based on wall clock
1124    o added non-hydrostatic scaling parameter: nh_am2
1125    o pkg/my82: futile attempt to make results compiler-independent by adding
1126      some "_d 0", etc. no effect.
1127    o for mnc output, fill the 'T' coordinate var with myTime and create a
1128      separate 'iter' variable for iteration count
1129    o pkg/diagnostics:
1130      add new capability: output of Global/Regional & per-level statistics ;
1131      tested against monitor output (including land & thSIce) on various exp.
1132    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1133    
1134    checkpoint57h_done
1135      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1136      data.diagnostics, data.gchem, data.ptracers) is done.
1137    
1138    o pkg/diagnostics: prepare for Global/Regional statistics.
1139      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1140    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1141      and rename it: DIFFERENT_MULTIPLE
1142    
1143    checkpoint57h_post
1144    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1145    o pkg/diagnostics: change output frequency, now in seconds (instead
1146      of Nb of iterations). This requires to change data.diagnostics.
1147    checkpoint57h_pre
1148    
1149    o in mnc, let the user create the output dir if both mnc_outdir_date
1150      and mnc_outdir_num are false
1151    o add fflags() to pkg/diagnostics which allows one to specify, on a
1152      per-file basis, the file precision [default behavior is unchanged]
1153    o added diagnostics to pkg/kpp, including computation of mixed layer
1154      depth based on a temperature/density criterion
1155    o updated verification/natl_box to test the new pkg/kpp diagnostics
1156    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1157    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1158    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1159      not mnc -- this mistake was found by JMC and is now corrected
1160    
1161    checkpoint57g_post
1162    o add Adams-Bashforth 3rd Order time stepping:
1163      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1164      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1165    checkpoint57g_pre
1166    
1167    o make lambda[Theta,Salt]ClimRelax spatially varying
1168      (default remains spatially uniform constant based on tau)
1169    o added new control variables
1170      * init. uVel, vVel, etanN
1171      * lambda[Theta,Salt]ClimRelax
1172    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1173      (suggested by G. Forget)
1174    
1175    checkpoint57f_post
1176    o add parameter "baseTime" = model base time = time at iteration zero
1177      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1178      account for baseTime shift
1179    o move Coriolis arrays from PARAMS.h to GRID.h
1180    checkpoint57f_pre
1181    
1182    o mnc-ifying the seaice package
1183    o introduced an alternative length scale calculation for use in the limiting
1184      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1185    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1186    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1187      as well as grad(vort3).  Made it compatible with both approximate form
1188      for the cubed sphere and full form of these gradients.  Added flag
1189      useFullLeith to select between approximate and full form.  
1190    o add "d0" in getcon.F to reduce differences between compilers/platforms
1191      update output.txt of exp. fizhi-gridalt-hs
1192    o change port_rand funtion to allow to set the seed.
1193    o fix obscure MNC bug involving conversion between reals and integers
1194      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1195        new version is now more standards-compliant
1196    o adjoint-related modifications
1197      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1198      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1199      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1200    
1201    checkpoint57e_post
1202    o Adding eddy stress controls a la Ferreira et al.
1203    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1204    
1205    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1206      update output.txt of exp. fizhi-gridalt-hs
1207    o add more "Z" dimensions and associated coordinate vars to MNC
1208    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1209    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1210      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1211      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1212      months and years.  Requires pkg/cal.
1213    o diagnostics: add pickup functionality
1214      - off by default for backwards compatibility
1215      - current version only uses MDSIO -- MNC will be added
1216    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1217    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1218    
1219    checkpoint57d_post
1220    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1221    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1222      output from the diagnostics package
1223    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1224    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1225      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1226    o add coordinate variables to the MNC output from the diagnostics package
1227    o change MNC-flags default value: true when useMNC=TRUE
1228    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1229      the ability (off by default) to read the grid information using MNC
1230    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1231    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1232    o do snap-shot diagnostics at the middle of the time-interval (instead of
1233      at the end).
1234    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1235      new test for AIM with thSIce + slab-ocean
1236    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1237    o move state variable diagnostics to the beginning of the time step ;
1238      (note: still needs some work specially for snap-shot diagnostics)
1239      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1240    
1241    checkpoint57c_post
1242    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1243    o generate new output.txt files on faulks with g77 & the new -ieee option
1244    checkpoint57c_pre
1245    
1246    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1247      update output.txt of exp. global_ocean.90x40x15
1248    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1249      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1250    o add saltFlux(+File) forcing capability with periodicExternalForcing
1251    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1252    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1253    o improvements for the MNC output from DIAGNOSTICS:
1254      - correct handling of the unlimitied dimension
1255      - all dims now have associated coordinate variables
1256      - variables located at U, V, and Corner ("Z") points are now written
1257        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1258        *all* data points are output
1259    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1260    o added pkg/seaice/seaice_monitor.F
1261    o mdsio_readfield.F can now read files visible only to master MPI process.
1262    o pkg/seaice: some test code for ice-modified ocean stress
1263    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1264      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1265      spurious negative numbers for precipitation and humidity.  Will cause
1266      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1267    o pkg/ctrl/
1268      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1269        May be enabled via doPackDiag
1270      *  introduce z-scaling of
1271         + gradient (doZscalePack) and
1272         + control (doZscaleUnpack)
1273    o pkg/mdsio/
1274      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1275      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1276    
1277    checkpoint57b_post
1278    o simplify options in diagnostics_fill arguments (remove weird combinations)
1279    o fix MNC coordinate variables so that they now contain per-face index
1280      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1281      general, EXCH2 grids are only aligned to a "local" coordinate system
1282    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1283    o Implement instantaneous output within pkg diagnostics:
1284      setting a negative frequency in data.diagnostics produces
1285     "snap-shot" output (as opposed to time-average if freq > 0)
1286    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1287      NOTE: change ptracer diagnostics name: use 2 characters to work with
1288            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1289    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1290      becomes the coordinate variable for the 'T' dimension
1291    o add CF-style coordinate variables to MNC
1292      - just a first cut:  numbers are meaningless on the cubesphere and
1293        missing along the T axis but otherwise it works!
1294    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1295    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1296    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1297      this is based directly on what the model compute, so that the content of
1298      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1299    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1300    o clean up build options files for SunOS, in particular
1301      - remove -traditional from xmakedepend
1302      - change -xarch=v9 to -xarch=native for f77
1303      - restore use of make (not gmake)
1304      - add CC=gcc if using g77
1305    o changes per discussion of AM, JMC, & EH3 today:
1306      - move redundant "grid" variables out of "state" -- in preparation of
1307        creating proper CF-style coordinate variables and in recognition
1308        that any/all grid variables can be easily copied (eg. w/NCO) from
1309        the grid files into any of the other NetCDF files
1310      - *always* output grid variables with MDSIO (this will eventually be
1311        changed)
1312      - output MNC grid file if useMNC is true
1313    o every instance of _END_MASTER() has been found and replaced with
1314      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1315      preprocessors
1316    o re-arrange diagnostics pkg initialisation:
1317     - allow each package to extend the available diagnostics list
1318     - add some checking and fix small problems (multi-threaded, ...)
1319     - new S/R diagnostics_fill (replace fill_diagnostics):
1320       look through the short list of active diag. (instead of the long list)
1321       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1322    
1323    checkpoint57a_post
1324    o this set of changes restores TAMC compatibility
1325      tested for global_ocean.90x40x15 adjoint on trough
1326      (what a pain)
1327    
1328    checkpoint57a_pre
1329    o some modifs in tools/build_options for sunos
1330    o call ctrl_pack for ctrl at end for optimcycle=0
1331    
1332    checkpoint57
1333    o add horizontal bi-harmonic viscosity for vertical velocity
1334      - new parameter viscA4W (defaults to viscA4)
1335      - affects only non-hydrostatic code
1336      - to be done: no-slip lateral boundary conditions
1337    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1338    o implement Implicit Vertical advection for pTracers
1339    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1340      (implemented also for implicit vertical diffusion & advection)
1341    o OBCS: extend application of tracer open boundary conditions
1342      to a strip beyond the boundary of width Olx/Oly
1343    o add call monitor to TAF set of required calls (flow directives)
1344      and include in natl_box_adjoint
1345    o untangle a few ifdefs related to cost, ctrl, autodiff
1346      untangel a few ALLOW_ECCO_OPTIMIZATION
1347    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1348      (theta2, salt2 in ecco_cost_weights)
1349    
1350    checkpoint56c_post
1351    o OBCS as control variables
1352      - update ctrl_ad_diff.list, obcs_ad_diff.list
1353      - remove balance of obcs controls from default
1354      - fix index bug nobcs in ctrl_init
1355      - fix dummy fields filen in ctrl_pack
1356      - add dummy weights for obcs
1357    o lsopt: comment out fort.94 output
1358    o optim:
1359      - remove unnecessary header files
1360      - adjusted namelists
1361      - add xerbla.F to Makefile
1362    o exf:
1363      - multiple modifications of exf_check_range
1364      - unit change in exf_init_runoff from [m/year] to [m/s]
1365    o mdsio:
1366      - i/o-vector change debugLevel from debLevA to debLevB
1367    
1368    checkpoint56b_post
1369    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1370      is called from DO_THE_MODEL_IO
1371      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1372      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1373      - clean up PTRACERS_WRITE_TIMEAVE a little
1374    o add another verification experiment that tests both the cfc-pkg and
1375      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1376      reactive tendencies treated inline with regular timestepping
1377    o testreport previously did a lousy job of comparing small numbers, so
1378      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1379      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1380      testreport.
1381    o ptracers_monitor: bug fix for MPI
1382    
1383    checkpoint56a_post
1384    o GCHEM: finish reorganizating the package
1385      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1386        (introduces another 3D-array for each passive tracer, but only if
1387        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1388        gchemTendency is not needed because the timestep is done separately)
1389      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1390      - GCHEM is now---more or less cleanly---separate from PTRACERS
1391      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1392        so clear to me how that should be done in a general way.
1393    o CFC: improve formatting of output in CFC_ATMOS
1394    o PTRACERS:
1395      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1396        that ALL experiments with ptracers enable can be checked. This makes
1397        GCHEM_MONITOR obsolete.
1398      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1399        monitorFreq
1400      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1401    o add PTRACERS (PTR0[1-5]) to testreport output
1402    o exf_check_range:
1403      * default changed to .TRUE.
1404      * will check values for niter0 if debLevA, every timestep if debLevB
1405      * STOP in exf_check_range if 'out of range'
1406      * range chosen generous to allow for potential extema
1407      TBD: a version with stricter range
1408           permitted range would be runtime parameters
1409    o GMredi:
1410      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1411      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1412      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1413    o GCHEM:
1414      - move call to GCHEM_FORCING_SEP, so that it is now called before
1415        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1416      - introduced a useGCHEM runtime flag and applied it everywhere.
1417      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1418        this flag is now only visible within GCHEM-pkg routines.
1419      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1420        be replaced by a 3D array that is computed before thermodynamics; for
1421        this, the tracer ID iTracer had to be included into the parameter list
1422        of ptracers_forcing
1423      - set up forward_step to call gchem_forcing, that will replace
1424        gchem_forcing_int in ptracers_forcing
1425      - cleaning up
1426    o small cleaning of exch2: remove files that are also in eesupp/src
1427    
1428    checkpoint56
1429    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1430    o mnc: cleanup "full" files--fixes out-of-memory problem
1431    o ECCO-GODAE
1432      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1433      * fully merged and updated from SIO code
1434        windstress sign change affects
1435        - exf_inscal_[u/v]stress
1436        - sign of xx_tau[u/v] adjustments
1437        - signs in cost_scat
1438      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1439      * natl_box_adjoint updated and compressed
1440      * 2-level checkpoint switch added
1441        (tested in EXP. 1 of natl_box_adjoint)
1442      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1443    o SVD
1444      * first complete, non-hacked version for SVD calculations
1445      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1446        performed via direct access files admtlm_vector.it????
1447        (via ctrl_[un]pack)
1448      * optimcycle is used for ARPACK iteration counter
1449        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1450      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1451        and add linear transforms where necessary
1452      * controls are initial/final SST, SSS (can be extended; need to check
1453        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1454    o mdsio: filename info to both stderr, stdout
1455    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1456      from sign change
1457    
1458    checkpoint55j_post
1459    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1460      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1461    o add consistent build directories and .cvsignore files to verification
1462    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1463    o make all subroutines 30 or less characters in length for certain older
1464      compilers to work (a thorough search only turns up two routines in
1465      pkg/ptracers)
1466    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1467      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1468    
1469    checkpoint55i_post
1470    o change arrays for total vertical diffusivity (2.D if explicit,
1471      3.D if implicit) ; each ptracer uses its own background value.
1472    o added mnc/NetCDF output capability to ocn_compon_interf
1473      - added bits to verification/cpl_aim+ocn so that it can run on
1474        ITRDA and other clusters without the mpirun "-wd" option
1475    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1476      configuration
1477    o give MNC the ability to create additional files rather than
1478      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1479      - the default is just less than 2GB which is a practical limit
1480        on many systems
1481    o Compute the non-local term using either KPP vertical diffusivity (=default)
1482       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1483    
1484    checkpoint55h_post
1485    o add verification test "vermix"
1486    o remove all the *_ioinc flags and replace with the single global
1487      outputTypesInclusive flag
1488    o allow to set a vertical profile of vertical diffusivity for T & S
1489    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1490    o useMNC moved from data.mnc to data.pkg
1491    
1492    checkpoint55g_post
1493    o Renaming carbon AD experiments to comply with testreport conventions
1494    o Updating adjoint of Held-Suarez hs94.1x64x5
1495    o Fixing directives for non-ECCO forward_step, after ECCO directives
1496      have been fixed to avoid recomp. of do_oceanic_phys
1497      Works well for global_ocean.90x40x15,
1498      but recomp. issue remains for carbon
1499    o Updating adjoint output for natl_box_adjoint after
1500      pkg/ecco has been modified (see taga c55d_post)
1501    
1502    checkpoint55f_post
1503    o rename to timeave_init_fixed
1504    
1505    checkpoint55e_post
1506    o some delicate re-shuffle of store directives to avoid one
1507      extra call of do_oceanic_physics
1508      affects ecco_the_main_loop.F, do_oceanic_physics.F
1509      checkpoint_lev1_directives.h
1510    o NB: this may break global_ocean adjoint temporarily,
1511      but it is clear how to fix it. Will do later, need this now.
1512    
1513    checkpoint55d_post
1514    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1515    o ecco_cost_weights is modified to 1x1 runs
1516    o modifs to allow observations to be read in as
1517      single file or yearly files
1518    o enable to read exf forcing fields as either
1519      single file or yearly files (flag useExfYearlyFields)
1520    checkpoint55d_pre
1521    
1522    o switch between 2-level and 3-level checkpointing
1523    o add ability of MNC to write local and "partial" (eg. 2D slices where
1524      the full 3D field is never actually stored) arrays to NetCDF files
1525      with the correct (that is, the complete multi-dimensional) set of
1526      array indicies
1527      - used in mom_vecinv() to write the diagFreq output
1528      - tested (demonstrated) in verification/aim.5l_cs
1529    o further mnc-ification
1530      - add verification/lab_sea to the list with mnc setups
1531      - fix undefined mnc v-names in cd_code
1532      - add kpp to mnc output (both snapshot and timeave)
1533    o non-hydrostatic code
1534      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1535        in calc_gw.F
1536      - defaults to viscAh
1537      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1538        friction or Leith) in non-hydrostatic mode, as long as there is
1539        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1540    o pkg/cost
1541      extend simple cost functions to treat time mean quantities
1542      (T,U,V) via cost_accumulate_state from cost_tile
1543    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1544        be 2 times larger than the minimum size the advection scheme requires.
1545        now get a perfect conservation of salt in advect_cs test-exp (updated)
1546    o GGL90 (Gaspar's TKE mixed layer)
1547      - add horizontal diffusion of TKE, requires exchanges in
1548        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1549        default. In OPA there is no horizontal diffusion of TKE but the
1550        mixing coefficients are computed from a horizontal average of TKE of
1551        6 points or so. I think that diffusion has a little more physical
1552        justification.
1553      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1554        was in vain)
1555      - mask tke-variable in ggl90_init
1556    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1557    o fix biharmonic diffusion on CS-grid.
1558    o more obcs stuff
1559      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1560        for reading boundary values. This routine is called from
1561        obcs_prescribe_read
1562      - updated obcs_check
1563      - changed sponge layer relaxation parameter units for days to seconds
1564      - turned off sponge layer by default
1565      - changed argument list of OBCS_CALC to myTime+deltaTclock
1566      - fixed about 35 bugs in obcs_external_fields_load
1567    
1568    checkpoint55c_post
1569    o obcs stuff
1570      - new runtime flags useOBCSprescribe, useOBCSbalance
1571      - re-arranged obcs_calc
1572      - moved exf_getobcs to obcs_prescibe_read
1573        obcs_prescibe_read is called after ORLANSKI stuff
1574        and independent of it (executable can contain all).
1575      - updated obcs_check
1576      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1577        These may be necessary only if tangential velocities are
1578        prescribed at OB, not sure, needs testing.
1579    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1580      which simplifies the calls and passes the ifc check-bounds test
1581    
1582    checkpoint55b_post
1583    o add a 2D scalar, Z location, exchange_2 routine.
1584    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1585      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1586      affects advect_cs results (for the wrong reason): update output.txt
1587    o use a more standard discretization for biharmonic viscosity ;
1588     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1589      affects results of dome set-up: update output.txt
1590    o fix gad_advection.F (CubedSphere part), back to version 1.23
1591    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1592    
1593    checkpoint55a_post
1594    o merged code to
1595      * prescribe/read time-dependent open boundaries
1596        (works in conjunction with exf, cal)
1597      * sponge layer code for open boundaries
1598      * each boundary N/S/E/W now has its own CPP option
1599        (healthy for the adjoint)
1600    
1601    checkpoint55
1602    o up-to-date adjoint of previous breaks
1603      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1604      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1605      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1606      - carbon: * remove tr1-related adjoint verification
1607                * add ptracer as control variable
1608    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1609      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1610    
1611    checkpoint54f_post
1612    o in verification/carbin/ remove experiment related to
1613      ALLOW_PASSIVE_TRACER (array tr1 etc)
1614      code_ad/ input_ad/ results_ad
1615    
1616    o add two new packages
1617      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1618        + subject to optimization (memory)
1619      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1620        + subject to reordering (many GOTOs in the original code)
1621        + so far opps is called for every (i,j) point, and then operates in
1622          the vertical; one may want to reorder the scheme in order operate in
1623          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1624          fields)
1625    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1626      - all verification tests compile and run with linux_ia32_g77
1627      - defaults are compatible with current input files--nothing
1628        should change if you were not previously using MNC
1629      - MNC output has been added in numerous places (eg. timeave)
1630        but there are still a few writes not yet do-able with MNC
1631        (this is in progress)
1632      - flags now allow for either/or/both use of MDSIO and MNC and
1633        documentation will soon follow
1634      - numerous small formatting cleanups for ProTeX
1635    o add version info (via BUILD_INFO.h) to MNC and stdout
1636    
1637    checkpoint54e_post
1638    o add two new packages
1639      - pp81 (Packanowski and Philander, 1981), Richardson number and
1640        stratification dependent mixing
1641      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1642      - these scheme operate in a similar manner as KPP (without ghat, of
1643        course), however there is only one diffusivity that is used for both
1644        temperature and salinity (and passive tracers)ç
1645    o add offline package
1646    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1647      provided by Stephanie Dutkiewicz
1648    o genmake2: add ability to search for C compilers and cleanup test output
1649      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1650    
1651    checkpoint54d_post
1652    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1653    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1654      leading to additional shift by 5 days each year of integration
1655       (i.e. leading to considerable offset over the years)
1656    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1657    o start with no AB and no initial filtering (staggerTimeStep):
1658      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1659    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1660      (external loading & cpl import/export stay in forward_step.F)
1661    o update coupling interface to work with new staggerTimeStep
1662    o change MDSIO ptracers_pickup.
1663    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1664    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1665    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1666    
1667    checkpoint54c_post
1668    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1669      this affects (truncation error) output.txt of test-exp:
1670       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1671    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1672    o change Qnet to always be the net heat flux, (+upward).
1673      affects (truncation error) output of natl_box exp.: updated
1674    o define the max number of passive tracers in PTRACERS_SIZE.h
1675    o start to test mnc routinely in exp0
1676    o add sea-ice loading (sIceLoad) as a new forcing field.
1677    
1678    checkpoint54b_post
1679    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1680       impressive on Altix and Opteron systems)
1681    o diagnostics can now write NetCDF files through the mnc package
1682    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1683    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1684    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1685      affects (truncation error) output of lab_sea & natl_box exp.: updated
1686    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1687    
1688    checkpoint54a_post
1689    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1690    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1691    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1692    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1693      + internal_wave (shift in writing cg2d_ini_res)
1694    checkpoint54a_pre
1695    
1696    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1697      - modified verification/lab_sea and natl_box_adjoint accordingly
1698    
1699    checkpoint54
1700    checkpoint53g_post
1701    o prepare splitting of thermodynamics: store convect.counter in common block
1702    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1703      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1704    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1705    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1706    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1707    o restore adjointability
1708    
1709    checkpoint53f_post
1710    o modifications that affect AIM experiment results (update output.txt):
1711      - no advection of S at top interface Nr (pkg/generic_advdiff)
1712      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1713    o AIM pkg:
1714      - include stability function into surf.Flux derivative relative to Tsurf
1715      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1716    
1717    checkpoint53e_post
1718    o merged cylindrical coord configuration
1719    o added rotating_tank experiment
1720    checkpoint53e_pre
1721    
1722    checkpoint53d_post
1723    o faulks upgraded: re-generate output.txt that have changed:
1724       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1725    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1726    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1727    o added Sadourny discretization of Coriolis
1728      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1729      - re-enabled use of omega3 (useAbsVorticity)
1730    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1731      vector-invariant equations
1732      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1733    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1734      hopefully without new bugs
1735      - still to do: biharmonic friction for non-hydrostatic w
1736    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1737    o regenerated output for global_ocean_ebm (using -ieee)
1738    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1739      of mom_common/
1740      - simple re-arrangement of instructions within computing loop
1741    checkpoint53d_pre
1742    
1743    checkpoint53c_post
1744    o new version of coupler for AIM+thSIce and Ocean models
1745     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1746     - land: change Evaporation of snow
1747     - aim with thSIce: fix bug in snow-precip.
1748    o changes to calc_gw.F
1749     - bug fix for w^2 term near the bottom boundary
1750     - (hopefully) improve the lateral slip boundary condtions for use with
1751        partial/looped cells
1752      - because the bug fix changes two verification experiments anyway (exp5
1753        and plume on slope), change the lateral boundary condition from half slip
1754        to the value of no_slip_sides
1755    o ebm package wasnt quite up to the parallel task. Fixed that.
1756    o Adjoint of EBM package + verification
1757      * TLM OK
1758      * ADM not sufficient accuracy yet (needs further testing)
1759    
1760    checkpoint53b_post
1761    o Commiting new energy balance model to repository
1762      * package is pkg/ebm
1763      * verif. is verification/global_ocean_ebm
1764      * references are in ebm_driver.F
1765    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1766    C        Global thermohaline circulation. Part I:
1767    C        Sensitivity to atmospheric moisture transport.
1768    C        J. Climate 12(1), 71-82
1769    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1770    C        Global thermohaline circulation. Part II:
1771    C        Sensitivity with interactive transport.
1772    C        J. Climate 12(1), 83-91
1773    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1774    C        Destabilization of the thermohaline circulation
1775    C        by atmospheric eddy transports.
1776    C        J. Climate 7(12), 1870-1882
1777    o Will need long integration testing.
1778    checkpoint53b_pre
1779    
1780    o created pkg/mom_common in preparation for variable viscosity code
1781    o renamed and split ini_mnc_io
1782    o pkg/land: only liquid water can diffuse or run-off
1783    o AIM using land: soil wetness availability account for snow
1784    o added printMapIncludesZeros to EEPARMS namelist
1785    
1786    checkpoint53a_post
1787    o restore TAMC compatiility for exf_constants.h
1788      (no usage of _d in .h)
1789    o Additional storing in KPP in an attempt to fix
1790      TAMC problem with adjoint of KPP code.
1791      (no success...)
1792      Identical code works fine with TAF.
1793    o Fixed verification/natl_box_adjoint experiments.
1794      Initial conditions for Experiments 4 and 5 are now
1795      set to "SEAICE_initialHEFF=0", which is more reasonable,
1796      and hence gives results closer to that of Experiment 2.
1797      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1798    
1799    checkpoint53
1800    o stable checkpoint with up to date adjoint
1801      TLM tests only run for 1st grdchk at the moment. Its unclear if
1802      this is a code problem or a problem with resetting code for g_
1803      variables that is being autogenerated wrong.
1804      Otherwise:
1805       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1806       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1807         are both still in chaos following their security messes.
1808    
1809    checkpoint52n_post
1810    o various build (mostly genmake2) changes including:
1811      - ability to build/run more easily within Cygwin and MacOS X
1812      - more complicated Makefiles with a stronger dependence on Gnu Make
1813    o pkg/seaice modifications
1814      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1815        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1816        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1817      - changed proxy for geostrophic velocity and updated
1818        verification/lab_sea/results/* accordingly
1819      - removed ADI dynamic solver from pkg/seaice
1820      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1821        they caused a segmentation fault under certain circumstances
1822      - removed unused field WATR
1823    o bug fix in exf-package:
1824      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1825         now reflect that.
1826    o small fixes in the cal-package:
1827      - set reference date to first of January for the 'model'-calendar
1828      - failing of cal_CheckDate in cal_FullDate now actually results in a
1829        warning
1830    o small modifications in exf-package to increase flexibility:
1831      - change climtempfreeze from a constant to a runtime parameter that
1832        is specified in data.exf_clim (default = -1.9)
1833      - introduce runtime parameter windstressmax (default = 2.0) that is
1834        specified in data.exf
1835    o fix in pkg/thsice:
1836      - update Evap (Tsf changes) to be consistent with Latent heat flux
1837      - maintain snow precipitation unchanged (even if Tsf >=0).
1838     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1839    
1840    checkpoint52m_post
1841    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1842      this does not change any of the results, because myIter=0 in swfrac always
1843      lead to jwtype=2 (the default anyway), but the call makes little sense
1844      as a default
1845    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1846    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1847      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1848    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1849    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1850    o extending useSingleCpuIO option to work with new exch2 I/O format
1851      - old-style, missing-tile I/O is still accessible by defining CPP
1852        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1853    o monitor package can write to NetCDF files and/or STDOUT
1854    o fix re-definition bug in MNC_GRID_INIT_ALL()
1855    o doc/api_reference added
1856      - a framework for building an API Reference Manual using all
1857        the "protex" comments embedded in the code
1858      - see pkg/generic_advdiff, pkg/mnc for examples
1859    o MNC:
1860      - make myThid the last argument for all subroutines
1861      - new default for the grid files: NO halos
1862      - add useMNC and other run-time flags
1863      - separate per-file-group handling of the unlimited dimension
1864      - early initialization of MNC w/ flags read at the eeboot stage
1865        and lookup tables set in initialize_fixed
1866      - write all MNC output to a freshly-created directory
1867    o thermodynamics sea-ice (thsice) is now tested with testreport.
1868    o test exp. advect_cs: use the standard cs32 grid ; update output.
1869    o Added functionality to grdchk:
1870      pick global i,j,k position (or nearest wet) where to perform check.
1871    
1872    checkpoint52l_post
1873    o new land formulation:
1874      a) use ground enthalpy as prognostic variable to ensure exact
1875         energy conservation.
1876      b) account for water temperature and for latent heat of freezing
1877         in all processes (rain, run-off, ground storage)
1878      c) compute surface and ground temperature implicitly.
1879    o aim_v23 modification for new land model:
1880      a) Treat separately land / ocean / sea-ice surface fluxes
1881         to allow implicit computation of land & sea-ice surface temp.
1882      b) add snow precipitation.
1883    checkpoint52l_pre
1884    
1885    o fix problem (when 1 tile is empty) in min/max monitor.
1886    o fix bug in timeAve (u,vZetatave in common block)
1887    o no restoring terms under ice for pkg/seaice
1888    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1889    o bug fix for pkg/seaice pickups
1890    o change MNC call locations and add coordinate attributes
1891    o mask vorticity at the corner ; affects global_ocean.cs output
1892    o fix ini_curvilinear_grid ; test CS experiments with mpi
1893    o aim.5l_cs: modify sea-ice fraction input file ; update output
1894    o exf: Adding simple range check routine for exf fields after read
1895    
1896    checkpoint52k_post
1897    o removed top-level directory "diags"
1898      - we migrated these functions to pkg/timeave a long time ago
1899    o fixed bug introduced in pkg/monitor
1900    o accuracy ctrlprec = 32 insuffient for gradient checks using
1901      averaged fields (I/O via cost_averages)
1902      -> use ctrl.h in active_file*.F to control I/O precision.
1903    o paramter list of CALL ADTHE_MAIN_LOOP
1904    o added initial do_the_model_io to ecco
1905    o set all ...Freq to zero after cost_final
1906      taveFreq, dumpFreq, pChkptFreq
1907    o MAIN and ECCO differentiability restored
1908    
1909    checkpoint52j_post
1910    o fix nchklev in tamc.h for global_ocean...
1911    o Bringing flow and store directives up-to-date
1912    o Really weird thing!
1913      call do_the_model_io from the_main_loop with parameters
1914      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1915      TAF places a faulty re-call of initialise_varia
1916      after cost_final call which should not be there!
1917    checkpoint52j_pre
1918    
1919    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1920      error messages
1921    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1922    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1923      debug output
1924    o modfied mdsio_writefield.F to handle non-global files under exch2
1925    o update AIM Cubed-Sphere exp (aim.5l_cs):
1926      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1927    o update AIM Equatorial Channel exp:
1928      use standard aim_v23 pkg and change the SST fields to be more realistic.
1929    o globalFile now works with exch2
1930    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1931      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1932    o limit timeave output for hi-res integrations
1933    
1934    checkpoint52i_post
1935    o removed CPP_EEOPTIONS.h from verification/*/code
1936    o updated the tiling for global_ocean_pressure
1937    checkpoint52i_pre
1938    
1939    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1940      the old pkg/aim).
1941    
1942    checkpoint52h_pre
1943    o shortened offending lines in exch2_send_rx?.template
1944    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1945    o genmake2: add build & execute test for NetCDF code
1946    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1947      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1948    o added useSingleCPUIO flag to monitor.F and mon_out.F
1949    o added temporary hack for sea-ice dynamics on the cube:
1950      metric terms are ignored and it is assumed that
1951      there is no sea-ice on cube faces 1, 2, 4, and 5.
1952    
1953    checkpoint52f_post
1954    o added exch2 cube routines to pkg/exch2
1955    o modified hs94.cs-32x32x5 to use it
1956    o added new grid files to hs94.cs-32x32x5
1957    checkpoint52f_pre
1958    
1959    checkpoint52e_post
1960    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1961      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1962    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1963      to work with implicit vertical advection and AB ;
1964    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1965    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1966     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1967    checkpoint52e_pre
1968    
1969    o fix bug in impldiff when Nr=1 or Nr=2.
1970    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1971    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1972    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1973      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1974    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1975    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1976    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1977    
1978    checkpoint52d_post
1979    o re-tiled many expts to allow comparison in multi-processor mode
1980      - updated output accordingly
1981      - changed hs94.128x64x5 to use intial T from file rather than use the
1982        random number generator
1983    o add infrastructure in model routines for fizhi and gridalt packages
1984    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1985    o changes to permit hi-res, cubed-sphere, configuration
1986      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1987      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1988      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1989        of surface winds for the cube
1990      (A verification experiment, based on global_ocean.cs32x15, but with
1991       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1992       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1993       complete with example surface forcing files and matlab scripts to look
1994       at the output and compare it with that of global_ocean.cs32x15.)
1995    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1996       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1997       to conform to the common rule.
1998    o check-in the first version of the coupler + interfaces for multi-components
1999       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2000       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2001       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2002       - ocean and atmos. share the same horizontal grid (no interpolation).
2003       - exchanges between component and coupler is done in forward_step
2004    o new verification experiment, cpl_aim+ocn:
2005       coupled ocean - AIM atmosphere on cs32 grid.
2006    
2007    checkpoint52d_pre
2008    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2009    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2010    
2011    checkpoint52c_post
2012    o Fixing OPTIONS files for use of exf:
2013      - ALLOW_ECCO not needed
2014      - ECCO_CPPOPTIONS.h should not be included from
2015        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2016        as has been the case in the past
2017      - All cal/exf related options are currently set in
2018        single header file. Should remain so until we
2019        agree on a consistent new policy.
2020    o Removed all CPP options for cal package.
2021      cal has no more CPP options.
2022    o modified STOREs in GAD_ADVECTION
2023    o corrected key comp. for passkey
2024    
2025    checkpoint52b_post
2026    o new version: "thsice" of thermodynamic sea-ice pkg:
2027     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2028     - modify fluxes but do not change theta directly;
2029     - light cleaning of bulk_force pkg (still needed with thsice).
2030     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2031       + output_thsice.txt to test thsice & bulk_force pkgs.
2032    o put back grid & coriolis monitor output.
2033    checkpoint52b_pre
2034    
2035    o call "do_the_model_io" at the beginning (=> dump initial state)
2036    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2037    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2038      (need info on NUMBER_OF_PTRACERS)
2039    o missing PTRACERS headers in some routines
2040    o default tamc.h in pkg/autodiff supposed to crash
2041      to ensure proper customization
2042    
2043    checkpoint52a_post
2044    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2045      - moved surfaceTendencyTice from pkg/seaice to main code
2046      - subroutine FREEZE_SURFACE now limits only surface temperature
2047        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2048        => new output.txt for global_ocean.cs32x15 & global_with_exf
2049      - keep the old version of FREEZE for backward compatibility;
2050        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2051      - corresponding modifs for TAF directives
2052    o added surface flux output variables to TIMEAVE_STATVARS
2053    o time-averaged output for pkg/ptracers
2054    o fix problem with ECCO-related divided adjoint
2055      snapshot file was missing some ad-variables,
2056      but no warning issued by TAF
2057    
2058    checkpoint52a_pre
2059    o some bug fixes for #undef REAL4_IS_SLOW
2060    
2061    checkpoint52 = ecco_c52_e35
2062    o after testing adjoints of checkpoint51u_post
2063    
2064    checkpoint51u_post
2065    o this is the post-merge tag of the ecco-branch
2066      (needs another clean checkout and re-testing)
2067    o various natl_box_adjoint configs and results
2068      but no input fields
2069    o obcs adjoint not yet merged!
2070    o adding ECCO global 1x1 and 2x2 degree configs
2071    o updated/extended some store directives for seaice
2072    o pkg/ecco now containes ecco-specific part of cost function
2073    o top level routines the_main_loop, forward_step
2074      supersede those in model/src/
2075      previous input data.cost now in data.ecco
2076      (new namelist ecco_cost_nml)
2077    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2078    
2079    checkpoint51t_post
2080    o this is the pre-merge tag of the ecco-branch
2081    
2082    checkpoint51s_post
2083    o cleanup: removed various obsolete #define-s
2084    o pkg/grdchk
2085      - renamed 'ph-grd 3' to 'grad-res'
2086      - merged from ecco-branch
2087        (remaining bug fixes for obcs gradient checks)
2088      - additional high-precision output for testreport
2089        (grep for 'precision_grdchk_result')
2090    
2091    checkpoint51r_post
2092    o cleaned up or removed CPP_OPTIONS.h files
2093    o updated results for some of the tests to reflect the new
2094      optfiles (-ieee: -O0 instead of -O3)
2095    
2096    checkpoint51q_post
2097    o cd_code:
2098      - moved cd_scheme.F -> cd_code_scheme.F
2099      - separate read_checkpoint from cd_code_ini_vars.F
2100      - separated cd_code part from write_checkpoint
2101      - updated AD_SOURCE, generated .flow
2102      - added CD_CODE_VARS.h to the_main_loop
2103      - Moving cd_code specific store dir.s to pkg/cd_code
2104    o ctrl package totally restructured
2105      - pack/unpack now optional and decoupled from
2106        xx_/adxx_ I/O
2107      - ctrl_pack/unpack cleaned
2108        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2109      - confined inclusion of AD_CONFIG.h to where necessary.
2110    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2111    
2112    checkpoint51p_post
2113    o create initial cd_code package
2114      - WARNING: the initialization of fields within packages
2115        is broken because INI_FIELDS (where READ_CHECKPOINT is
2116        called) is called *before* PACKAGES_INIT_VARIABLES.
2117        This seems to be backwards since
2118        1) its important to initially zero the entire field including
2119           the "halo" region
2120        2) zeroing needs to be done *before* reading pickup info
2121           and the pickup call might or might not happen in any
2122           particular run
2123      - this needs an overhaul for R2
2124    o cleanup verification/*/code/GMREDI_OPTIONS.h
2125    o cleanup testreport
2126    
2127    checkpoint51o_post
2128    o bringing AD-related verif's up to date with genmake2
2129      - carbon/
2130      - global_ocean.90x40x15/
2131      - hs.94.1x64x5/
2132      - (front_relax/ )
2133    o (more) consistent directory structure for AD-related verif.'s
2134    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2135    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2136    o bug fix in find_alpha.F for MDJWF:
2137      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2138        change rho -> rho-rhoConst
2139      - replace call find_rho to find_rhonum
2140    o initialisation of rFlx extended to full array (required by TAF)
2141      and shifted to thermodynamics
2142    o removed PTRACERS.h in ptracers routine
2143    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2144    o Correcting initialisations for fVerU, fVerV.
2145    o helping TAF to recognize dependency on kUp for
2146      fVerU, fVerV
2147    o Replacing delZ by delR in pkg/ctrl/
2148    checkpoint51o_pre
2149    
2150    o undid all of cp51 pending some cleanups and discussion
2151    o added the [#include "AD_CONFIG.h"] statement to all files that need
2152       it for adjoint/tl #defines
2153     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2154     o removed tools/genmake since it no longer works
2155    
2156    checkpoint51n_post
2157    o modifications to make FREEZE flux visible to pkg/kpp
2158      - moved surfaceTendencyTice from pkg/seaice to main code
2159      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2160      - subroutine FREEZE now limits only surface temperature
2161        (this means new output.txt for global_ocean.90x40x15,
2162         global_ocean.cs32x15, and global_with_exf)
2163    o added surface flux output variables to TIMEAVE_STATVARS
2164    
2165    checkpoint51n_pre
2166    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2167    o added [#include "AD_CONFIG.h"] to all files that use the following
2168      defines:
2169      - ALLOW_ADJOINT_RUN
2170      - ALLOW_TANGENTLINEAR_RUN
2171      - ALLOW_ECCO_OPTIMIZATION
2172    
2173    checkpoint51m_post
2174    o incorporating changes to get TAMC/TAF working in genmake2
2175      - added new TAMC/TAF targets to the Makefile
2176      - various cleanups related to package handling
2177      - these changes should have no impact on the forward model
2178    
2179    checkpoint51l_post
2180    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2181     - faster algorithm for cal_addtime.F
2182     - higher precision arithmetic, where needed
2183     - pkg/exf *startdate variables changed from calendar date to
2184       model integration time
2185    
2186    checkpoint51l_pre
2187    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2188    o enable to apply restoring on S & T only in a latitude band.
2189    o update output (external_forcing_surf modif. change truncation errors)
2190       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2191    
2192    checkpoint51k_post
2193    o change default to: useNHMTerms=.FALSE.
2194     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2195       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2196     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2197        exp1, ideal_2D_oce
2198     - change data file of oceanic exp (leave the results unchanged for now)
2199       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2200    o set gravitySign automatically according to the vertical coordinate used
2201      (and change sign: back to "logical" value: +1 when R increases downward)
2202    o added an include barrier to the default CPP_OPTIONS.h and
2203      removed the #include "PACKAGES_CONFIG.h" from it
2204    o fix a bug in mom_fluxform (from chk51j_post)
2205    
2206    checkpoint51j_post
2207    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2208    o adjusted some flow directives (dynamics, thermodynamics)
2209    o added cubed-sphere case to test cost function
2210    o heckpoint_lev?_directives.h now include
2211      pkg-specific directives, whenever those are enabled.
2212    o Moving pkg-specific flow directives to corresponding pkg
2213      Moving pkg-specific differentiation list to corresponding pkg
2214      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2215      ---> conventions are
2216           - pkg_ad.flow
2217           - pkg_ad_diff.list
2218           - pkg_ad_check_lev?_dir.h
2219    
2220    checkpoint51i_post
2221    o merge of the branch-genmake2
2222      - knowingly breaks the older genmake
2223      - automatic generation of all ALLOW_${PKG_NAME} defines
2224      - new testreport supersedes older testscript
2225    o large number of package inclusion and header cleanups
2226    checkpoint51i_pre
2227    
2228    o new output for adjoin of global ocean vector invariant
2229    o fix for checkpoint of thermodynamic seaice and bulk_force
2230    o Steph gchem various cleanups
2231    
2232    checkpoint 51h_pre
2233    o fixed some single quotes
2234    o modify gchem pkg to be more versatile
2235    o modifications to clean up dic pkg
2236    o add pkg/cfc
2237    
2238    checkpoint51g_post
2239    o provide links for ARPACK and ADM*TLM
2240    o start removing verification/vero/
2241    o update AD-related stuff
2242      (in particular some IF-statements in model/src/ routines)
2243    o adding to verification/global_ocean.90x40x15/ adjoint of
2244      vector invariant setup
2245    
2246    checkpoint51f_post
2247    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2248    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2249      of tracer Green's fucntions for ocean inversion project.
2250    
2251    checkpoint51f_pre
2252    o Added on-the-fly spatial interpolation capability
2253        "USE_EXF_INTERPOLATION" to pkg/exf.
2254      - This is a temporary Cartesian-grid hack until
2255        the super-duper ESMF coupler becomes available.
2256      - See verification/global_with_exf/README for usage example.
2257      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2258        flags and modified pkg/seaice accordingly.
2259    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2260        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2261        non-local transport term.
2262    
2263    checkpoint51e_post
2264    o pkg/mom_vecinv:
2265      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2266      - add time-ave diagnostic of vorticity advection.
2267    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2268    o atmospheric geopotential: - include water vapor effect;
2269                                - use p^kappa in p* scaling.
2270    o land pkg: read initial state from files.
2271    o AIM : add stratospheric drag in the upper level
2272    
2273    checkpoint51d_post
2274    o change function ILNBLNK (=> last non-blank char.) to return zero
2275      (instead of the string length) when the string. char is empty
2276    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2277    o modif's to restore TAMC compatibility
2278      - avoid "_d" constructs in PARAMETER declarations
2279      - avoid interrupting lines by comment lines
2280    o Use cluster local disks for purely local I/O
2281      vs. globally visible disks needed for ctrl stuff
2282      (merged from ecco-branch)
2283      - new active_file_loc... and mdsio_..._loc routines
2284      - affected packages: autodiff, ctrl, grdchk, mdsio
2285    
2286    checkpoint51c_post
2287    o introducing integer flag debugLevel
2288      - debLevZero: suppress all output
2289      - debLevA: standard
2290      - debLevB: equivalent to current debugMode=.TRUE.
2291    o introducing pathname variable mdsioLocalDir for mdsio
2292      that can be specified at runtime
2293      (relevant for cluster I/O to local disk)
2294    `
2295    >>>checkpoint51b_post
2296    adjoint of ptracers
2297    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2298    o extended state in checkpoint_lev?, etc.
2299    o alternative ctrl/cost with tr1 or ptracer
2300    o new comlev1_bibj_ptracers
2301    o new ptracers.flow
2302    o made ptracers_forcing same as external_forcing_s
2303    o added verification for adjoint with ptracers
2304      - adm. grdchk fail so far
2305      - tlm. grdchk OK
2306      - checked tapelev/comlev recomputations: OK
2307    <<<checkpoint51b_pre
2308    
2309    checkpoint51a_post
2310    o added code for biogeochemistry package
2311      - new pkgs: dic, gchem
2312      - new subroutine in ptracers
2313    o modify code for biogeo packages
2314      - in model/src and pkg/ptracers
2315    
2316    checkpoint51
2317    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2318      - autodiff, ctrl, exf, grdchk, seaice
2319      kept separate packages
2320      - cost, ecco, obcs
2321    o updating verification/internal_wave, verification/lab_sea
2322      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2323    
2324    checkpoint50i_post
2325    o Preparing next differentiable checkpoint and sync
2326      of MAIN vs. ecco-branch
2327      - 1st step: this one is differentiable
2328      - 2nd step: next(! not this) checkpoint will have updated packages
2329                  from ecco-branch)
2330    
2331    checkpoint50h_post
2332    o new package "land": provide surface BC for AIM.
2333    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2334    o AIM: use true log-P extrapolation for near surface temp (= as in
2335        F.Molteni paper) ; update aim.5l_cs output.
2336    o New variable in PARM03 for more flexible pickups
2337    o somewhat cleaned package initialisation sequence for
2338      ctrl/ cost/ ecco/ in packages_... routines
2339    
2340    checkpoint50g_post
2341    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2342      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2343      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2344        made the default because of faster convergence than ADI
2345    
2346    checkpoint50f_post
2347    o exf totally restructured
2348      - replaced all exf_set_ routines by one generic exf_set_gen.F
2349        and made sure it's still differentiable
2350      - split exf_getffields.F into new exf_bulkformulae.F
2351      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2352      - updated adjoint/makefile and relevant verif. accordingly
2353    
2354    checkpoint50f_pre
2355     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2356          + change Evap over land. (update aim.5l_cs output)
2357     o added missing .cvsignores and made uniform across expts
2358     o changed configuration of tidal_basin_2d expt
2359     o added pkg/debug functions for tracing code in fatal crashes
2360     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2361     o new fn in pkg/monitor to stop model if solution grows too big
2362     o removed lots of single quotes from comments
2363    
2364    checkpoint50e_post
2365    o make KPP work with PTRACERS
2366     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2367       nearly a copy of kpp_transport_s
2368     - there is no analogue to SurfaceTendencyS, so I have to use
2369       gPtr(of the surface layer) instead
2370    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2371    checkpoint50e_pre
2372    
2373    checkpoint50d_post
2374    o change kpp output from multiple-record state files to single-record state
2375      files analogous to write_state.F
2376    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2377      analogous to the cg2d-related output.
2378    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2379      so that writing to internal file fn (with length 512) fails.
2380    checkpoint50d_pre
2381    
2382    checkpoint50c_post
2383    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2384    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2385    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2386    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2387    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2388    
2389    checkpoint50c_pre
2390    Merging from release1_p13:
2391    o bug fix for pkg/seaice dynamic solver
2392    o Added SEAICE_initialHEFF to pkg/seaice
2393    
2394    checkpoint50b_post
2395    o store u*,v* in gU,V instead of in guNm1,gvNm1
2396    o in order to put the momForcing out of the Adams-Bashforth:
2397      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2398      to timestep.F
2399    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2400    o re-generate output for highly sensitive test-exp:
2401       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2402    
2403    checkpoint50b_pre
2404    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2405    o corrected CPP option mismatch in exf_Bulk... functions for case
2406      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2407    
2408    checkpoint50a_post
2409    o Bug fix for merging between c50 and KPP.
2410      ikey was passed from thermodynamics to kpp_calc via
2411      common block rather than being recomputed in kpp_calc,
2412      in contradiction with new key itdkey.
2413      New key ikppkey created, and tamc.h headers updated.
2414    
2415    checkpoint50
2416    - 2nd step of merge with ecco-branch:
2417      merge changes in ecco-branch back into main trunk
2418    - bug fix in find_alpha
2419    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2420    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2421    - merged some sliced AD support routines
2422    
2423    checkpoint49
2424    merged from ecco-branch:
2425    o exf:
2426      - Enable initialisation of forcing fields to constant
2427        (runtime) values.
2428      - in exf_getffields.F
2429        Reduce i-/j-loop to interior domain, discarding overlaps.
2430        That also fixes wrong TAF-key computations for key_1, key_2
2431        with bulf formulae.
2432      - exf_init.F modify #ifdef for exf_init_evap
2433      - exf_getffieldrec.F, ctrl_getrec.F
2434        The following INT-usages are not safe:
2435          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2436          fldcount = int(fldsecs/fldperiod) + 1
2437        and were modified.
2438    o autodiff: checkpoint_lev...
2439      - updated storing for bulk formulae (some arrays were missing)
2440      - added state for seaice package
2441      - synchronized with main branch
2442    o DIVA:
2443      Modif.s in
2444      - the_main_loop.F
2445      - the_model_main.F
2446      and added cost_final_restore.F cost_final_store.F
2447      o With these changes, it is possible to fully separate
2448        the first forward run to compute the cost function (mdthe_main_loop)
2449        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2450        into separate model executions.
2451        This enables better tuning of DIVA to given queue sizes.
2452      o Loss of cost function value in consecutive DIVA runs is
2453        fixed by storing to 'costfinal' file.
2454      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2455        beginning/end of adjoint integration is accounted for.
2456      The current changes apply to TAF-1.4.26.
2457      TAF has one remaining bug, requiring one manual change
2458      (see MITgcm manual).
2459    o cal: synchronized between MAIN and ecco-branch
2460    
2461    checkpoint48i_post
2462    o Changes to restore differentiability of code w.r.t. previous tag
2463      (mostly adding new routines to make list and replacing
2464      pressure by totPhiHyd).
2465    o Updated and merged grdchk package
2466      - has both ADM and TLM checks
2467      - works for single- and multi-proc.
2468      - output cleaned
2469      - worked successfully for parallel DIVA
2470    o genmake:
2471      - Adding -platform=SP4
2472      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2473    o Modif. for DIVA:
2474      ctrl_unpack should not be called in intermediate DIVA interval.
2475      (similar thing would apply for active files such as
2476      tbar, sbar, psbar, which should not be reinitialised;
2477      only relevant for ecco-branch)
2478    
2479    checkpoint48h_post
2480    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2481    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2482    o Added SEAICE_initialHEFF to pkg/seaice
2483    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2484    
2485    checkpoint48g_post
2486    --- EOS:
2487    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2488      store total Potential in totPhyHyd for diagnostics & EOS.
2489    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2490    --- Pressure/geopotential gradient:
2491    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2492    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2493      ( changes results of global_ocean_pressure )
2494    o NLFS + z-coord.: add eta*Rho' contribution.
2495    o accurate phiHyd when using interface-W at the middle between 2 centers
2496     ( changes results of ideal_2D_oce )
2497    o includes r* 2nd term in potential gradient.
2498    
2499    checkpoint48f_post
2500    Merging from release1_p12:
2501    o Modifications for using pkg/exf with pkg/seaice
2502      - improved description of the various forcing configurations
2503      - added basic radiation bulk formulae to pkg/exf
2504      - units/sign fix for evap computation in exf_getffields.F
2505      - updated verification/global_with_exf/results/output.txt
2506    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2507      (SBO) core products, including oceanic mass, center-of-mass,
2508      angular, and bottom pressure (see pkg/sbo/README.sbo).
2509    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2510      to avoid negative values in shallow regions.
2511      - updated verification/natl_box/results/output.txt
2512      - updated verification/lab_sea/results/output.txt
2513    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2514    o Added useSingleCpuIO option (see PARAMS.h).
2515    o Updated useSingleCpuIO option in mdsio_writefield.F to
2516      work with multi-field files, e.g., for single-file pickup.
2517    o pkg/seaice:
2518      - bug fix in growth.F: QNET for no shortwave case
2519      - added HeffFile for specifying initial sea-ice thickness
2520      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2521    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2522      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2523    o pkg/seaice:
2524      - adjoint-friendly modifications
2525      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2526    
2527    checkpoint48e_post
2528    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2529    o dynamics: change definition of computational domain & adapt mom_fluxform
2530      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2531    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2532        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2533        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2534        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2535        inverted_barometer solid-body.cs-32x32x1
2536      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2537    
2538    checkpoint48d_post
2539    o in preparation for r*:
2540     a) use pre-computed gradient of hydrostatic potential:
2541        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2542     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2543        => affects results of glob_oce_pressure (different truncation error)  
2544      update output.txt of ideal_2D_oce & global_ocean_pressure
2545    
2546    checkpoint48d_pre
2547    o in preparation for r*:
2548      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2549      pass the 2 comp. of the grad. as arguments to momentum S/R.
2550      but for the moment, only used if it does not change the results.
2551    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2552    
2553    checkpoint48c_post
2554    Modifications in treatment of initial flux forcing controls
2555    to avoid extra storing of flux fields.
2556    
2557    checkpoint48c_pre
2558    o Added tidal_basin_2d experiment (currently 1D!)
2559    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2560    
2561    checkpoint48b_post
2562    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2563     (modification to pressure gradient not yet implemented)
2564    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2565      (for U & V) that are used for vertical advection of momentum.
2566    
2567    checkpoint48a_post
2568    o In preparation for r*, use temp. array to compute vertical transport
2569       in flux-form momentum pkg. => change results of few test-exp.
2570      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2571                        lab_sea, natl_box & plume_on_slope
2572    
2573    checkpoint48
2574    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2575    
2576    checkpoint47j_post
2577    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2578    o moved adexch from forward_step to addummy_in_stepping
2579    o added exch in ctrl_map_...
2580    o aveFreq.=0. at end of cost_final to avoid overwrite in
2581      reverse checkpointing loop
2582    o Yet more changes in gmredi:
2583      * adgmredi_calc_tensor
2584        avoiding all recomputation of gmredi_slope_limit
2585      * adgmredi_x/y/rtransport
2586        added flag for excessive storing to avoid recomp. of
2587        u/v/rtans, dTdx/y/z
2588        -> this is not really necessary and very memory-consuming
2589      * adgmredi_slope_psi:
2590        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2591      * gmredi_slope_limit
2592        re-activated full calculation of taperfct for case 'ac02'
2593    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2594    
2595    checkpoint47i_post
2596    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2597    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2598      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2599    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2600    o gmredi: fix few bugs.
2601    
2602    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2603    This will be a good checkpoint to plug into the ecco-branch.
2604    o few modif.'s to get latest version adjointed
2605      (mainly kick out code in ini_linear_phisurf)
2606    o modif's to run adjoint with exactConserv
2607    o case GM_BOLUS_ADVEC should be cleaned
2608      S/R gmredi_slope_psi should be cleaned
2609    o verification/carbon now has exactConserv=.TRUE.
2610    
2611    checkpoint47g_post
2612    o time-average AIM output: becomes independent from statvars time-average
2613      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2614    o After TAF bug fix:
2615      Tested adjoint of gmredi package.
2616      Tests were done with checkpoint47 rather than with latest
2617      checkpoint47f_post since the latter is broken for the adjoint
2618      verification/carbon/ contains both ADM and TLM gradient checks.
2619    Here they are, before they get changed/lost/stolen.
2620    Mostly modif.'s to fix numerical sensitivities.
2621    Gradient checks OK for
2622    - GM_taper_scheme:
2623      * clipping
2624      * ac02
2625      * linear
2626      * glw91
2627      * dm95
2628      * ldd97
2629    - GMREDI_OPTIONS:
2630      * GM_VISBECK_VARIABLE_K
2631      * GM_NON_UNITY_DIAGONAL
2632      * GM_EXTRA_DIAGONAL
2633      * GM_BOLUS_ADVEC
2634    in conjunction with data.gmredi parameters to be checked in
2635    in a few minutes under verification/carbon/code/
2636    
2637    checkpoint47f_post
2638    Merging from release1_p10:
2639    o modifications for using pkg/exf with pkg/seaice
2640      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2641        and SEAICE_EXTERNAL_FLUXES
2642      - pkg/exf CPP options EXF_READ_EVAP and
2643        EXF_NO_BULK_COMPUTATIONS
2644      - usage examples are Experiments 8 and 9 in
2645        verification/lab_sea/README
2646      - verification/lab_sea default experiment now uses
2647        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2648    
2649    checkpoint47e_post
2650    o created a tag prior to creating a branch
2651    
2652    checkpoint47d_post
2653    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2654      at the bottom boundary had an erroneous half slip boundary condition
2655    o added bottom drag and no slip boundary condition capabilities to
2656      oceanic pressure coordinates code
2657    o added new verification experiment global_ocean_pressure, this experiment is
2658      also described in the tutorial section of the manual
2659    checkpoint47d_pre
2660    
2661    checkpoint47c_post
2662    o Added a verification experiment for a global cubed-sphere ocean run
2663      -  verification/global_ocean.cubed32x32x30
2664      -  uses pkg/therm_seaice and pkg/bulk_forcing
2665    
2666    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2667    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2668      when using P-coordinate; only implemented for atmospheric config.
2669    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2670      NOTES: requires option NONLIN_FRSURF to be "#define".
2671    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2672    
2673    checkpoint47b_post
2674    Merging from release1_p9:
2675    o pkg/seaice
2676      - removed GOTO's and added taf directives
2677      - double precision constants to reduce the g77 (Linux)
2678        to F77 (SGI) differences reported in release1_p8
2679    o tools/genmake
2680      - added SGI options
2681    o verification/testscript
2682      - updated to that of checkpoint47a_post
2683    o verification/global_ocean.90x40x15/input/eedata
2684      - modified for SGI f77 compatibility
2685    o verification/lab_sea
2686      - added description of sea-ice model
2687      - added missing matlab routines
2688      - added test of thermodynamics parallelization
2689    
2690    checkpoint47a_post
2691    o new pkg: aim_v23
2692     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2693       for now, keep the same surface forcing as before.
2694     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2695     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2696     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2697    o add diagnostic of surface correction term in monitor output
2698    
2699    o bulk_force and therm_seaice
2700    - Two packages:  bulk_force (Bulk forcing)
2701      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2702    - Earlier integration from Stephaine Dutkiewicz
2703      and Patrick Heimbach.
2704    - Two ifdef statements for compile time,
2705       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2706    
2707    checkpoint47
2708    differentiable version of checkpoint46n_post
2709    o bug fix in quasihydrostaticterms
2710    o * "clean" adjoint code (in terms of extensive recomputations)
2711        can now be obtained for all GMREDI options (i.e. for
2712        - GM_VISBECK_VARIABLE_K
2713        - GM_NON_UNITY_DIAGONAL
2714        - GM_EXTRA_DIAGONAL
2715        - GM_BOLUS_ADVEC )
2716      * However, wrong gradient check problem remains unsolved.
2717      * New CPP options have been introduced for different
2718        tapering schemes
2719    o external_fields_load now part of differentiation list
2720    o pressure needs multiple storing;
2721      would be nice to have store_pressure at beginning or
2722      end of forward_step, e.g. by having phiHyd global (5-dim.)
2723      (NB: pressure is needed for certain cases in find_rho,
2724      which is also invoked through convective_adjustment).
2725    o recomputations in find_rho for cases
2726     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2727    o #define ATMOSPHERIC_LOADING should be differentiable
2728    o ini_forcing shifted to begining of initialise_varia
2729    o Incorporating QNVS line search routines into MITgcm
2730      (this is separate code, and therefore not under pkg)
2731      lsopt/, optim/
2732    o Updated verification/carbon/
2733      - #define GM_VISBECK_VARIABLE_K
2734      - GM_taper_scheme    = 'ldd97'    
2735    
2736    checkpoint46n_post
2737    Merging from release1_p8:
2738    o verification/natl_box:
2739      updating new external_fields_load routine
2740    o New package: pkg/seaice
2741      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2742      The sea-ice code is based on Hibler (1979-1980).
2743      Two sea-ice dynamic solvers, ADI and LSR, are included.
2744      In addition to computing prognostic sea-ice variables and diagnosing
2745      the forcing/external data fields that drive the ocean model,
2746      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2747      The implied surface heat flux is then stored in variable
2748      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2749      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2750      non-local transport term.  Because this call precedes model
2751      thermodynamics, temperature under sea-ice may not be "exactly" at
2752      the freezing point by the time theta is dumped or time-averaged.
2753      N.B.: fairly large differences in accuracy occur across
2754            different platforms/compilers; comparison between
2755            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2756            generated output gives:
2757       T           S           U           V
2758      C D M    c        m  s        m  s        m  s        m  s
2759      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2760      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2761      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2762    
2763      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2764    o GAD:
2765      - generated new common blocks to account for call of
2766        same gad routines with differing traceridentities
2767        (needed to modify tracerIdentity indices in GAD.h)
2768      - generated separate common blocks for case useCubedSphereExchange
2769        (Department of Futurology)
2770      - parameter lists to gmredi_?transport: added tracerIdentity
2771      - added new key indices to tamc.h
2772    o external_fields_load:
2773      - added this routine to TAF list
2774      - needed to make some common blocks global and additional storing
2775        along the same lines as exf package (checkpoint_lev?_directives.h)
2776    o exf:
2777      updated external forcing package
2778      - bug fixes carried over from ecco-branch
2779        (missing OBCS_OPTIONS.h in two routines)
2780      - enable easy to use "no forcing".
2781      - added exf I/O for atmospheric loading
2782      - added exf I/O for runoff data
2783      - transfered scaling between exf <-> MITgcm to exf namelist
2784    o Adding new verification experiment global_with_exf.
2785      This verification experiment is almost identical to the
2786      global_ocean.90x40x15 experiment, except that it uses
2787      the exf (and cal) package instead of the
2788      external_fields_load routine (cf README file).
2789    
2790    checkpoint46m_post
2791    o modified testscript to return -- when there are no lines of "%MON" output
2792    o added new flag "quasiHydrostatic" for QH mode
2793      and new routine quasihydrostaticterms()
2794    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2795      New routine: mom_u_coriolis_nh()
2796    o fixed sign of non-hydrostatic metric terms in u and v equations.
2797      Depend on correct sign of gravitySign.
2798    o added work.pc* to .cvsignore in aim directories using ifc
2799    o introduced flag for controllin non-hydrostatic metric terms
2800    o removed gravitySign from PARM04
2801    o switched to g77/ifc from pgf77 in aim experiments
2802    
2803    checkpoint46l_post
2804    o made convective adjustment work with pressure coordinates:
2805     - changed the direction of k-loop in convective_adjustment.F for the
2806       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
2807     - adjusted the reference pressure k-index in convective_adjustment.F
2808     - adjusted the convection condition in convect.F (in analogy to
2809       calc_ivdc.F)
2810     - convective_adjustment no longer computes anything on the halos
2811     - removed the warnings about negative salinity from find_rho.F and
2812       find_alpha.F; instead the new routine look_for_neg_salinity, called
2813       at the beginning of find_rho, find_alpha, and find_beta, does a
2814       check of the entire slice, if CPP-option
2815       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
2816    checkpoint46l_pre
2817    
2818    checkpoint46k_post
2819    o fixed the verification/global_ocean.90x40x15 experiment:
2820     - new bathymetry (the world according to A., JMC, and M.)
2821     - new initial fields and forcing fields (*.bin files)
2822     - new POLY3.COEFFS (for the next release one should switch to a full
2823       equation of state: JMD95P or MDJWF)
2824     - fixed several errors and redundancies in the data file
2825     - experiment uses looped cells
2826     - added matlab directory with diagnostic scripts for plotting of output
2827    
2828    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
2829     - read AIM physics parameters from a file (data.aimphys)
2830     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
2831    
2832    checkpoint46j_post
2833    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
2834    o move wVel computation at the end of the time step, in S/R integr_continuity
2835    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
2836    o update timeave pkg for wVel diagnostic.
2837    checkpoint46j_pre
2838    
2839    checkpoint46i_post
2840    o Clean up AIM package (and keep the results unchanged):
2841      include CPP_OPTION and use IMPLICT NONE in all routines ;
2842      declare all the variables _RL ; use _d 0 for all numerical constants.
2843      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
2844    
2845    checkpoint46h_post
2846    o cleaned up the use of rhoNil and rhoConst.
2847      - rhoNil should only appear in the LINEAR equation of state, everywhere
2848        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
2849        and the dynamical equations are all divided by rhoConst
2850    o introduced new parameter rhoConstFresh, a reference density of fresh
2851      water, to remove the fresh water flux's dependence on rhoNil. The default
2852      value is 999.8 kg/m^3
2853    o cleanup up external_forcing.F and external_forcing_surf.F
2854      - can now be used by both OCEANIC and OCEANICP
2855    checkpoint46h_pre
2856    
2857     Added code to convert surface volume flux (fresh water) into
2858     a mass flux when using P coordinates in the ocean (OCEANICP).
2859     Note: It assumes you have set rho0=rhoConst=density of fresh water.
2860    
2861    checkpoint46g_post
2862    o Include a new diagnostic variable phiHydLow for the ocean model
2863      - in z-coordinates, it is the bottom pressure anomaly
2864      - in p-coordinates, it is the sea surface elevation
2865      - in both cases, these variable have global drift, reflecting the mass
2866        drift in z-coordinates and the volume drift in p-coordinates
2867      - included time averaging for phiHydLow, be aware of the drift!
2868    o depth-dependent computation of Bo_surf for pressure coordinates
2869      in the ocean (buoyancyRelation='OCEANICP')
2870      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
2871        Theta, Salinity, and Pressure in the parameter list. This routine is
2872        presently contained in find_rho.F. This routine does not give the
2873        correct density for 'POLY3', which would be a z-dependent reference
2874        density.
2875    o cleaned up find_rho
2876      - removed obsolete 'eqn' from the parameter list.
2877    o added two new verification experiments: gop and goz
2878      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
2879    checkpoint46g_pre
2880    
2881    checkpoint46f_post
2882    o Enable tangent linear (forward mode) gradient checks:
2883      - extended active file handling to g_... files
2884      - added TANGENT_SIMULATION to theSimulationMode
2885      - extended grdchk package accordingly
2886    o added tangent linear setup in verification/carbon/code_ftl
2887    o added adjoint setup in verification/front_relax/code_ad
2888    
2889    checkpoint46e_post
2890    o Added new equation of state -> MDJWF
2891      - EOS of McDougall et al., 2002, JAOT, submitted
2892      - caveat: the equation of state is only valid for a smaller (more
2893        realistic?) range of values than JMD95P/Z and UNESCO
2894      - added masks to the calculation of pressure in store_pressure
2895      - added more check values for density in check_eos (ini_eos.F), some of
2896        the old check values are out of the range of the MDJWF-eos, so don't
2897        expect perfect matches for those
2898    checkpoint46e_pre
2899    
2900    checkpoint46d_post
2901    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
2902      'OCEANICP', also initialised field pressure correctly in ini_eos in the
2903      case of pressure coordinates. eosType='JMD95Z' in
2904      combination with buoyancyRelation='OCEANICP' now causes an error.
2905    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2906      in find_alpha/beta.
2907    checkpoint46d_pre
2908    
2909    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2910      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
2911    
2912    checkpoint46c_post
2913    o Changes necessary for ocean in p-coordinates
2914     -  Added new buoyancy relation = 'OCEANICP'
2915     -  Added new parameters = gravitySign (this used to be contained inside
2916        the factor dRdZ which I added when we first switched to R coordinates).
2917     X GM/Redi is not compatible (yet)
2918     X bottom drag and no-slip need to be debugged.
2919    checkpoint46c_pre
2920    
2921    checkpoint46b_post
2922    o Added new equation of state -> JMD95Z and JMD95P
2923      - EOS of Jackett and McDougall, 1995, JAOT
2924      - moved all EOS parameters into EOS.h
2925      - new routines ini_eos.F, store_pressure.F
2926    o Added UNESCO EOS, but not recommended because it requires
2927      in-situ temperature (see JMD95)
2928    o Modified formatting for knudsen2.f in utils/knudsen2 and added
2929      unesco.f to be used with POLY3
2930    checkpoint46b_pre
2931    
2932    checkpoint46a_post
2933    o Added (atmospheric) pressure loading
2934      - new field in FFIELDS.h, etc...
2935      - new cpp flag ATMOSPHERIC_LOADING
2936    o Changed hFacC to _hFacC in calc_phi_hyd.F
2937    o Added SHORTWAVE_HEATING to some files for consistency
2938    checkpoint46a_pre
2939    
2940    checkpoint46
2941    further merges from release1_p5
2942    o new ctrl package
2943      - adopted from ECCO environment to enable optimization
2944      - added Eliassen Palm fluxes to controls
2945    o added Eliassen Palm flux controls to gradient check package
2946    o cost package
2947      - Compatible with new ctrl package
2948      - added Eliassen Palm cost hooks
2949      - modif's of existing cost functions
2950    o Adjoint-related bug fixes in kpp:
2951      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
2952      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
2953    o autodiff package
2954      - flow directives:
2955        + new for S/R do_the_model_io
2956        + enhanced for S/R checkpoint
2957        + new gmredi.flow
2958      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
2959        disable adcommon.h/g_common.h by default.
2960      - fixed problem for adjoint of global_max
2961    o modified verification/carbon/
2962    o New setup for adjoint of global_ocean
2963    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
2964    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
2965    o incorporated hooks for sponge layer code (external_forcing.F)
2966    
2967    checkpoint45d_post
2968    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
2969    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
2970      (affects plume_on_slope "cg2d" output)
2971    o add new parameter deltaTfreesurf for free-surface time stepping
2972    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
2973    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
2974    o change phiMin in exp1 (to agree with documentation)
2975    o add new flags:
2976     - T,S forcing inside/outside Adams-Bashforth
2977     - turn off temp,salt advection and/or forcing
2978     - for each tracer, define internal flag for multiDimAdvection & A-B
2979    o monitor: change definition of KE to check conservation of Energy
2980    
2981    checkpoint45c_post
2982    o Removed f90 comments ("!")
2983    o Modified initialisations to enable exf package for MITgcm
2984      (without invoking ECCO_PACKAGE).
2985    o modifications to gradient check package (Martin Losch)
2986      - enable centered differences
2987      - modified format of standard output
2988    
2989    checkpoint45b_post
2990    o cleaned exchange calls in cg2d
2991    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
2992    o included CPP option SINGLE_LAYER_MODE in thermodynamics
2993      to configure barotropic setup (Martin Losch)
2994    o moved some initialisations within bi,bj loop in dynamics
2995      (TAF flow dependency)
2996    o in initialise_varia, moved call packages_init_variables
2997      before convective_adjustment_init
2998      (corresponding adjustment of TAF tape initialisation).
2999    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
3000    
3001    checkpoint45a_post
3002    o compute Rho over the whole domain (extend iMin,jMin indices)
3003    o specific exchange for X-slice domain (case Ny=1)
3004    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
3005    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
3006    
3007    checkpoint44h_post = checkpoint45
3008    o Fix to restore differentiability:
3009      place at which packages_init_variables is called in
3010      initialise_varia is crucial for reverse control flow.
3011    o modifications in GMRedi to enable stable adjoint
3012      (corresponding modif's in thermodynamics, dynamics)
3013    o added missing hook for sponge layer code in external_forcing
3014    o modified test cost functions
3015    o storing in gad_advection (plus removal of write(0,*)!
3016    o missing headers TR1.h added in convective_adjustment routines
3017    o errorMessageUnit set non-equal zero in eeboot
3018      (conflict on some platforms, e.g. IBM SP3)
3019    o modified carbon verif.
3020    
3021    checkpoint44h_pre
3022    o vertical grid option: allow to put the Interface at the middle between
3023      2 cell-centers ; replace delZ in pkg/kpp by drF.
3024    o GM Advective form: Tracers are advected using the residual transport (=
3025      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
3026    
3027    checkpoint44g_post
3028    o fix surface correction term in multiDimAdvection (affects plume_on_slope
3029      results) ; ifdef missing in thermodynamics.F
3030    
3031    checkpoint44f_pre,checkpoint44f_post
3032    o added PTRACERS package
3033      This allows an arbitrary number of passive tracers to be integrated
3034      forward simultaneously with the dynamicaly model.
3035      + Implemented so far:
3036        - basic forward algorithm (time-stepping, advection, diffusion, convection)
3037        - I/O and checkpointing
3038        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
3039      + Not implemented so far:
3040        - KPP
3041        - OBCS
3042      + No specific example supplied (yet) but global_ocean.90x40x15 has the
3043        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
3044        line in data.pkg.
3045      + This package is disabled by default since it increases storage.
3046    
3047    
3048    o testscript: added -cleanup option
3049    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
3050                 b) enable to filter 2D fields.
3051    
3052    checkpoint44e_pre,post
3053    o re-wrote convective adjustment to use pre-calculated weights
3054      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
3055      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
3056      Original calls to convect() still in place.
3057    
3058    chkpt44d_pre,post
3059    o added missing EXCLUDE_MONITOR flags
3060    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
3061      (incompatible typ in MIN/MAX expressions caused problems
3062      on IBM SP3)
3063    o in genmake added variable MAKEDEPEND
3064      plus resetting for case SunOS
3065    o added timer_stats.c routine for IBM SP3
3066    o removed variables in dynamics
3067    !!! I forgot to create tag chkpt44d_pre !!!
3068    !!! But chkpt44d_pre = chkpt44c_post    !!!
3069    
3070    o real fresh water flux implemented with non-linear free-surface.
3071    
3072    chkpt44c_pre,post
3073    o few fix (mask in shap_s2, EmPmR in external_field_load,
3074      USE_NATURAL_BCS in solve_for_P);
3075    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
3076    
3077    checkpoint44b_pre/_post
3078    o merge of relevant stuff from the ecco-branch:
3079      - genmake: removed $S64 overwrite for case SunOS
3080      - pkg/exf: update and corrections for field swapping and obcs
3081      - pkg/ecco: parameter lists for the_model_main, the_main_loop
3082                  harmonized between ECCO and MITgcm
3083      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
3084                      updated checkpointing_lev... lists for obcs
3085      - model/src: minor changes in forward_step, plot_field
3086                   added directive for divided adjoint in the_main_loop
3087      - pkg/mdsio: added mdsio_gl_slice
3088    
3089    o check parameters & config (chkpt44a_pre,post)
3090    o OBC and NonLin_FrSurf.
3091    
3092    checkpoint44
3093    o fix bug in mom_vi_del2uv
3094    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
3095    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
3096    o update AIM experiments (NCEP input files)
3097    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
3098    o added some stuff for AD
3099    
3100    checkpoint43
3101    o added two new advection tests
3102    o added global 4x4 degree ocean test
3103    o added test of H&S94 with free surface on cube
3104    o some final mods for gradient check, adjoint,...
3105    
3106    checkpoint42
3107      Fixed AD-related problems:
3108    o Store directives up-to-date with re-arranged Adams-Bashforth
3109      (mainly thermodynamics.F)
3110    o New store directives for multi-dim. advection schemes
3111      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
3112      * new common block and key passkey
3113      (mainly gad_advection.F)
3114    o Modified store directives for split of dynamics/thermodynamics
3115      for the case ALLOW_KPP
3116    o Cleaned argument list for timestep_tracer.F
3117    
3118    checkpoint41
3119    o re-formatted/added comments in prologues of key subroutines
3120      to work with protex
3121    
3122    checkpoint40
3123    o moved calc_gs, calc_gt and calc_tr1 back to model/src
3124    o added FLT (floats) package from Arne along with demo. experiment
3125    o re-arranged Adams-Bashforth scheme for tracers to allow easier
3126      implementation of forward-in-time forcing terms
3127    o more mods for non-linear free-surface including new variable
3128    o modified multi-dim method to work on cube
3129    o bug fix in KPP (from DM)
3130    
3131    checkpoint40pre9
3132    o added DST advection schemes
3133    o fix MPI bug on SGI's
3134    o modifications for non-linear free-surface
3135    o fixed conditionals for fixed flow/passive tracer only mode
3136    o added tension/strain form of stress tensor
3137    o changes to commenting of arguments for TAF/TAMC
3138    o added/updated many matlab scripts
3139    o added multi-dimensional advection method for tracers
3140      
3141    checkpoint40pre8
3142    o new package rw/
3143      Added method for dumping intermediate local arrays:
3144      mdsio_writetile - same as mdsio_writefield except works from inside
3145                        bi,bj loop
3146      mdsio_writelocal - same as mdsio_writetile except works for local
3147                         arrays
3148      write_local_r? - higher-level wrapper for mdsio_writelocal
3149      Controlled by diagFreq. Defaults to zero (ie. no dumps)
3150      Example given at end of mom_vecinv.F that dumps some local arrays.
3151    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
3152      control flux-form versus vector invariant code.
3153      Switch is runtime flag vectorInvariantMomentum (defaults to false)
3154      or genmake -DISABLE ...
3155    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
3156      (additional storing is now needed for case vecinv;
3157      currently nothing implemented to switch this storing off
3158      in case fluxform is used since no CPP flag available).
3159    
3160    checkpoint40pre7
3161    o bug fix in dynamics.F
3162      calc_viscosity called before k=1,Nr loop.
3163    o added some #ifdef's ALLOW_PASSIVE_TRACER
3164    o cleaned initialisations in ctrl_map_ini
3165      related to TAF
3166    
3167    checkpoint40pre6
3168    o split dynamics into thermodynamics & dynamics
3169    o corresponding split of calc_diffusivity into
3170      calc_diffusivity, calc_viscosity
3171      (kpp_calc_diff, kpp_calc_visc).
3172    o Added diffkr, kapgm to control variables
3173    o bug fix in gmredi_slope_limit for ldd97
3174    
3175    checkpoint40pre5
3176    o proper initialization of Adams-Bashforth time stepping
3177      + uses forward step for very first step of model (iter=0)
3178    o re-generated *all* output since almost all output is modified by this
3179      change (sorry but we've been putting this one off for about 2 years)
3180      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
3181        *not* regenerated since they are already out of date and I don't
3182        want to create the impression that they are suddenly working.
3183    o removed KAP stuff for DEC's
3184    o modified/added many .cvsignore files in */code and */input
3185    o added new expt "solid-body.cs-32x32x1"
3186      + this uses an alternative form of ini_curvilinear_grid.F which
3187        is not necessarily any better than the current one...
3188    
3189    checkpoint40pre4
3190    o added re-initialisations of utrans,vtrans,rtrans in
3191      calc_common_factors which are crucial for TAF.
3192    o extended iMin,jMin range for calc_common_factors,
3193      calc_diffusivity
3194    o added option ALLOW_PASSIVE_TRACER
3195    o a few minor updates and fixes
3196    
3197    checkpoint40pre3
3198    o created calc_gtr1.F for gad package
3199    o split the_main_loop and re-introduced forward_step
3200    o some recomputations of nIter0 for TAMC
3201    
3202    checkpoint40pre2
3203    o Updated to latest branch of AJA, JMC
3204    o Added gradient check package
3205    o Added routines for passive tracer handling
3206    o Added carbon sequestration sensitivity experiment
3207    
3208    checkpoint39
3209     o Modifications and fixes to support TAMC
3210       (mainly missing or wrong directives)
3211     o Corrected common blocks when fooling TAMC to produce adjoint I/O
3212       in addummy_in_stepping
3213     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
3214     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
3215     o Included following packages:
3216       cal: calendar
3217       exf: external forcing
3218       ecco: essential routines to control use of cal, exf
3219             (NB: this is not the full ECCO environment)
3220     o disabled some packages by default in genmake
3221    
3222  checkpoint38  checkpoint38
3223   o see notes_c37_adj.txt   o see notes_c37_adj.txt
3224   o corrected wrong layer index in external_forcing_t   o corrected wrong layer index in external_forcing_t

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