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revision 1.95 by adcroft, Tue Nov 5 19:14:26 2002 UTC revision 1.840 by dimitri, Wed Jun 20 14:08:22 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     - fixed problem with HSNOW initialization to avoid thick snow when AREA
16       is initilized with small values - does not change lab_sea results.
17     - added HsnowFile initialization capability
18    o pkg/smooth: addition to model/src and pkg/ctrl so allow
19     initialization of pkg/smooth and application to control vector
20    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
21    o dependencies: pkg/profiles requires pkg/cal
22    o pkg/profiles:
23     - added option ALLOW_PROFILES_GENERICGRID
24         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
25         that interpolation information (grid points and coefficients) is provided
26         within the netcdf input files.
27         -> sample matlab scripts can be found in MITgcm_contrib/gael
28         that allow you to prepare netcdf input files.
29     - also modified: cleaner include statements, cleaner error print statements,
30       cleaner stops when error, and more tests of the netcdf input files consistency.
31    
32    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
33    o pkg/seaice:
34     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
35       requires a new routine: seaice_diagnostics_fill.F
36     - make sure that seaice does not move if not forced (pressure replacement
37       method, Hibler and Ip, 1995), changes results
38     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
39     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
40       It is turned off by default (=-1.), because it changes the results.
41     - make it possible to read AREA from a file, too.
42    
43    checkpoint59c
44    o add S/R and diagnostics for oceanic mixed-layer depth
45    o move GMRedi call after all vertical mixing schemes (including KPP)
46    o pkg/thsice:
47     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
48      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
49    o pkg/obcs:
50     - bug fix for balance code
51    o pkg/seaice:
52      - allow values of SEAICE_elasticParm > 1
53      - add new parameter SEAICE_evpTauRelax as an alternative
54        to SEAICE_elasticParm
55      - make lsr boundary conditions free slip (by default), changes result
56      - add code for no slip boundary conditions for lsr
57      - set minimum of zeta to zero (and not 4e8) (changes results)
58      - add a cap on AREA after advecting AREA if seaice_growth is not called
59    o change calculation of Visbeck K:
60      - no longer depend on tapering scheme; instead, compute slope (limited
61        by GM_maxSlope). this is equivalent to what was comuted before with
62        clipping or linear tappering.
63      - fix vertical averaging (wrong by 1/2 level)
64      - leave the old version (but will not be maintained) within
65        #ifdef OLD_VISBECK_CALC / #endif
66      - update output of exp. ideal_2D_oce
67    o change error catch in calc_r_star to improve vectorization
68    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
69      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
70    o adjoint:
71      Re-organized adjoint checkpointing according to Matt Mazloff
72      (but with modifs/completions/cleanups)
73      Storing is now bundled into large arrays to optimized I/O
74      (and second step in cleanup of the_main_loop)
75    
76    checkpoint59b
77    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
78      - export/import (between ocean & coupler) fields needed for ocean DIC.
79    o pkg/seaice:
80      - get rid of three more exchanges seaice_calc_viscosities (required
81        different loop boundaries in seaice_lsr and seaice_ocean_stress)
82      - bug fix in seaice_ocean_stress (update of lab_sea required)
83      - reduce loop boundaries to necessary minimum also in seaice_evp
84      - go back to the old way of computing deltaC/Z as the adjoint likes that
85        better
86    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
87      passive tracer to an Age Tracer) + update output.txt
88    o pkg/exf:
89      - implement A-grid / C-grid selection for wind-stress input files.
90      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
91      for now, in exf_bulk_largeyeager04.F only :
92      - change implementation for case where windspeed + 2. components wind-stress
93        are read-in. AND use rhoConstFresh to convert evap.
94    o pkg/seaice:
95      - use correct EXCH_UV for wind-forcing (on A-grid).
96      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
97        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
98    o pkg/exf:
99      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
100      EXF_INTERPOLATION:
101      - merge global_with_exf/code version of exf_interp_read.F
102        to the main code ;
103      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
104        reading the file ; Important: This options needs to be defined to recover
105        previous code.
106        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
107      - no longer loose real*8 precision along the way when using exf_iprec=64.
108    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
109      - change discretisation of evp-solver in order to avoid another exchange
110        (changes lab_sea) and clean up a little
111      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
112        help the adjoint (this also changes the results slightly)
113      - add a few "_d 0" where they had been missing in seaice_evp.F
114      - cleaning up: remove unused seaice_calc_rhs.F
115    o pkg/exf: some cleaning-up:
116      - change various "constants" into runtime parameters
117      - cleaned-up Large&Yeager04 routine which should eventually
118        replace exf_bulkformulae.F (changed names of S/R and CPP)
119        and merged various ALLOW_ATM_WIND options
120     only used with thsice pkg (in thsice_get_exf.F):
121      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
122        which are used when useStabilityFct_overIce=TRUE (= the default)
123      - change default values of ice & snow emissivity and scale downward LW
124        by ice & snow emissivity.
125    o pkg/thsice:
126     fix few little problems, in thsice_calc_thickn.F:
127      - growth vertically (and not laterally) if iceFrac == iceMaskMax
128      - melt only laterally if hIce < hThinIce (as the comments say)
129      and in thsice_extend.F:
130      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
131      - start to form ice as soon as the minimum ice-volume is reachable.
132     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
133      and cpl_aim+ocn
134    o pkg/kpp
135     - move computation of surface related input fields to KPP into a new
136       subroutine kpp_forcing_surf.F
137     - remove wrong (within bi,bj loops) EXCH calls.
138     - little cleaning (add argument myThid in last position, cvs header ...)
139     - for now, fix conservation problem by exchanging KPPviscAz (may not
140       be the best fix)
141    o pkg/seaice
142     - check for inconsistent evp parameter/cpp-flag combination
143     - remove leftover errIO flat for obsolete name list error handling
144    o OpenAD
145     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
146    
147    checkpoint59a
148    o pkg/seaice: some parameter clarifications and a little bit of clean up
149    o pkg/thsice: rename run-time parameters:
150       himin       -> hIceMin
151       himin0      -> hThinIce
152       hihig       -> hThickIce
153       i0          -> i0swFrac
154       transCoef   -> bMeltCoef
155       frac_energy -> fracMelting
156      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
157       with default values (for now) that do not change the results.
158      remove old version of thsice vars advection in pkg/seaice.
159    o in FFIELDS.h:
160      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
161      - make pLoad & sIceLoad always available (but still only used if
162         ATMOSPHERIC_LOADING is #define).
163    o pkg/kpp: replaced _KPP_RL with _RL
164    o bug fixes for vertical diffusivity computations when both KPP and
165        3D diffusivity arrays are used.
166    o pkg/seaice: fix bug in evp solver, while doing that
167      - change (improve?) discretization of stress computations for both
168        cgrid-lsr and evp solver
169      - add a new routine to compute strain rates
170      - the above changes lab_sea results
171      - add no slip conditions for evp solver (off by default), lsr-version
172        may follow
173      - fix exchange for shear at Z-points (does not change lab_sea)
174      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
175        (to force the user to pick a time step since there is not "safe" way
176        of choosing it)
177      - add principal stress diagnostics
178      - rearrange fields for evp a little to avoid having to call a: too many
179        exchanges and b: exchanges for stress trensor components which we do
180        not have.
181      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
182        of evp, complete rewrite for lsr case (latter is does not yet work
183        in all cases)
184    o pkg/kpp: add code to have mixing in shelf ice caverns
185      - add myThid to all kpp routines (long overdue)
186    
187    checkpoint59
188    o pkg/exf:
189      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
190        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
191      - move exf header files from lower_case.h to UPPER_CASE.h ;
192        add missing cvs Header & Name
193      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
194      - add namelist param. selectStressGridPosition, exf_monFreq
195      - retire many _CLIM routines, and remove data.exf_clim
196        + params moved to data.exf
197        + climsst, climsss now handled by exf_set_gen, i.e.
198          climss?period=0 refers to constant field,
199          climss?period=-12 to monthly forcing
200      - split up namelists in data.exf
201    o pkg/seaice:
202      - remove seaice_exch and seaice_exch_uv
203      - remove superfluous exchange of theta
204      - add myThid to seaice_budget_ocean/ice
205      - add new interface for atmospheric wind forcing (C-grid only)
206        + new routine
207        + two new field (taux, tauy for stress over ice)
208        + removed one global field (DAIRN) for C-grid case only
209    o pkg/thsise
210      - 2nd set of modifs for thsice adjoint in conjunction with exf
211    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
212    
213    checkpoint58y_post
214    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
215      vertical diffusivity, similar to that in MOM4; turned on using
216      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
217      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
218    o Added capability for 3D specification of background vertical diffusion
219      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
220      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
221      "data" file that contains the 3D vertical diffusivity coefficients.
222    o ice dynamics (pkg/seaice) with thsice thermodynamics:
223      - add code within pkg thsice to advect & diffuse sea-ice fields
224      similar to (and will replace) what has been added in  seaice_advdiff.F,
225      but: - conserving Mass, Heat & Salt.
226           - better when using non-linear advection scheme (not yet fully tested)
227           - can also be used in atmospheric set-up (for now, only the diffusion).
228    
229    checkpoint58x_post
230    o IO option for global-file compact format:
231      - add options when generating topology (utils/exch2/matlab-topology-generator)
232      - add I/O capability (pkg/mdsio).
233      - adapt utils/matlab/rdmds.m to read this format.
234      for now long-line format not yet supported by pkg/mdsio (& exch2).
235    o shelfice: add a few diagnostics
236    
237    checkpoint58w_post
238    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
239      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
240      (and replace horiVertRatio in NH code).
241      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
242                         and tutorial_plume_on_slope (sensitive to truncation)
243    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
244      directly to drive seaice model (C-grid only)
245    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
246     - reintroduce computation of wind from stress,
247     - compute tau (in exf_bulkformulae.F) from windstress averaged to
248       mass points to avoid tau = 0
249     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
250    o rdmnc.m: make it work with "global" files created with gluemnc
251    o rdmnc.m : some improvements in dealing with singleton dimension
252      (tested on all testreport mnc output files).
253    o genmake2: disable pkg/profiles if netcdf test fails.
254    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
255    o move call to cal_readparms up to make calendar parameters/variable available
256      to all packages
257    
258    checkpoint58v_post
259    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
260      useDynP_inEos_Zc tested.
261    o pkg/exf: changes to properly interpolate/mask/scale initial fields
262    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
263      and portions thereof.  See read_cs.txt for description and examples.
264    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
265      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
266      following the great-circle arc between those 2 points.
267    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
268      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
269    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
270     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
271     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
272     - still needs work (not working with some options ; efficiency to improve)
273       and serious testing.
274     - use this scheme for temperature & salinity in 2 advection test exp.:
275       advect_xy & advect_xz, respectively.
276    
277    checkpoint58u_post
278    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
279    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
280    o testreport: add option "-skipdir" to skip some test.
281    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
282      momentum calculation.
283    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
284    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
285      remove checkpoint.F and the_correction_step.F (no longer used);
286      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
287    o add option (linFSConserveTr) to correct for tracer source/sink due to
288      Linear Free surface
289    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
290    o pkg/thsice: fix reading mnc-pickups
291    
292    checkpoint58t_post
293    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
294    o pkg/mdsio:
295     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
296       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
297       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
298     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
299     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
300       either MDS_READ_FIELD or MDS_WRITE_FIELD )
301     - new S/R (to replace MDSWRITEMETA), which allows to write more
302       informations (variable names, time ...) to meta files.
303     - modify rdmds.m to give back the meta file content.
304    o pkg/diagnostics: change vertical interpolation to be safer, and more
305       flexible (define p-levels to interpolate to in data.diagnostics);
306      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
307       diagnostic pointer.
308    o pkg/seaice: more cleaning up of seaice_growth, added many comments
309    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
310    o fix multi-category seaice:
311     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
312       SEAICE_MULTICATEGORY
313     - fix short wave heat flux
314    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
315       and allow to use EVP solver. Change forward lab_sea: test both EVP
316       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
317    o Initial check-in of lab_sea adjoint
318      (very similar to natl_box_adjoint/code_seaice)
319      * used C-grid and EVP solver
320      * used KPP, GM/Redi
321      * uses inAdExact=.TRUE.
322      * gradient checks fail for both ADM and TLM
323        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
324        f.d. gradients actually seem more problematic than ADM, TLM gradients;
325        issue is related to forward mismatch between g77 an ifort
326    o pkg/seaice: overhaul of thermodynamics
327     - growth.F and groatb.F are replaced by new routine seaice_growth.F
328     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
329     - move a few global fields out of SEAICE.h into seaice_growth.F and
330       make them 2D (FICE/QNETO/ ...)
331     - remove FO (it is the same as QNETO)
332     - introduce a few local fields to avoid modifying external fields such
333       as atemp, etc.
334    
335    checkpoint58s_post
336    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
337      changed exf_set_gen.F so that
338        genperiod=0 means input file is one time-constant field and
339        genperiod=-12 means input file contains 12 monthly means
340    o CG2D: use pre-computed solver main-diagonal (stored in common block);
341      this affects truncation error ; generate new output file for exp. which
342      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
343        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
344        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
345        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
346        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
347        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
348    o start implementation of deep-atmosphere and anelastic formulation
349    o verification: remove 2nd copy of input files and use script "prepare_run"
350      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
351    o mom_common/vecinv/fluxform: fix a few initialisation isssues
352    o profiles: fix for multithreaded case
353    
354    o diagnostics: rename few diags:
355      s/'PRESSURE'/'RCENTER '/g
356      s/'TICE    '/'oceFreez'/g
357      s/'TAUX    '/'oceTAUX '/g
358      s/'TAUY    '/'oceTAUY '/g
359      s/'SWFLUX  '/'oceQsw  '/g
360      s/DIFx/DFxE/g
361      s/DIFy/DFyE/g
362      and add few ocean-forcing diagnostics:
363      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
364    o modifications to pkg/seaice/growth.F and budget.F, which change results of
365      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
366      as actual snow thickness.  It now refers everywhere to effective snow
367      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
368    
369    checkpoint58r_post
370    o modifications to pkg/seaice/growth.F, which change results of
371      lab_sea experiment: fixes pertain to melting snow over open water, to
372      masking EVAP under sea ice, and to using the correct AREA variable for
373      computations of EVAP, PRECIP, HSNOW, and GHEFF
374    o add ability to read bathy, salt, and theta using MNC (off by def)
375    o add flooding algorithm and advection of HSNOW for pkg/seaice;
376      both are turned off by default and do no change any results
377    o seaice advection with pkg/thsice: a step toward the use of non-linear
378      advection scheme, but #ifdef or commented out for now (requires more EXCH).
379    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
380      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
381      in natl_box (affects results @ truncation level: update output.txt)
382    o multi-threading and IO:
383      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
384      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
385        (needed to work with SingleCpuIO): tested in all verif. exp.
386    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
387      affects the results (but none of the verification test uses this scheme).
388    o Adding some pkg/diagnostics capability to pkg/seaice
389      (will certainly be subject to changes)
390    o ctrl: adding new control variables:
391      lwflux, lwdown, evap, snowprecip, apressure, runoff
392    
393    checkpoint58q_post
394    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
395      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
396      high_res_cube configuration by 4% on Columbia.
397    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
398      add (in global_with_exf/code) a version of EXF_INTERP_READ without
399      dynamical allocation (seems to work in multi-threaded).
400    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
401      single CPU io) so that TAF does not have to see EESUPPORT.h
402    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
403    
404    checkpoint58p_post
405    o obcs: stop if obcs is used with useCDscheme = .true.
406    o shelfice:
407     - fix a sign error so that no slip at shelfice interface works
408     - remove stop for combination non-hydrostatic code and shelfice. That does
409       not mean, that the results are correct, but at least they are numerically
410       stable
411    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
412    o added adjoint exch routined for all exch*3d* routines
413      and updated flow directives
414    
415    checkpoint58o_post
416    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
417      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
418    o change controling S/R for writing pickup file (new S/R do_write_pickup)
419      and clean-up reading/writing of pickup files.
420    o fix local version of read/write pickup (NH part) in rotating_tank/code
421    o simplify EXCH interface:
422     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
423     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
424    o added the regrid package
425    o shelfice:
426     - add a simple boundary layer scheme to reduce noise
427     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
428    
429    checkpoint58n_post
430    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
431       local variable (not in common block).
432    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
433      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
434      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
435        to work with SingleCpuIO.
436    o add "_d 0" to real constant of pkg/cfc subroutines ;
437       update exp. cfc_exemple & tutorial_cfc_offline output files.
438    o multi-threading and IO:
439      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
440        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
441      - barrier before and after reading.
442      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
443      - avoid using MDS_WRITELOCAL for LAND pkg output.
444      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
445        common-block variables ; Allows multi-threading with master-thread IO.
446    o change default MAX_NO_THREADS from 32 to 4 ;
447      and stop cleanly when MAX_NO_THREADS is too small.
448    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
449    
450    checkpoint58m_post
451    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
452       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
453    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
454       keep global_ocean.90x40x15 (for AD testing) with former secondary test
455       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
456    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
457        add MITgcm_tutorials (= code + all the tutorials)
458    o ecco, option to compute cost for total ssh (mean+anom)
459    o consistent with addition of ptracer and ssh in pkg/profiles
460    o profiles: adding ptracer and ssh
461    o testreport: change multi-test output-file name
462      (from output.txt.{name} to output.{name}.txt)
463    o profiles: now ok for mutli-tiles case
464    o seaice: add 4 parameters for different advection schemes for area,
465      (effective) seaice thickness, enthalphy, and snow height. Their default
466      is the standard parameter SEAICEadvScheme
467    o calc_gw:
468     - add cosFacU in zonal viscous flux (harmonic.visc.).
469     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
470       of tutorial_plume_on_slope.
471    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
472    o calc_gw: true flux-form, account for horizontal grid spacing.
473      update rotating_tank results, but not plume_on_slope (affected at
474      truncation level, 11 digits).
475    
476    checkpoint58l_post
477    o calc_gw:
478     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
479     - remove side-drag for now (need to fix it); update plume_on_slope results.
480     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
481    o commit code to make SST/SSS weights spatially variable
482      (based on either variable in-situ or variable initial T/S weights)
483    o pkg/ecco:
484      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
485        now based on horizontally varying weights wthetaLev, wsaltLev
486      * cost_averagesflags now returns year indices in addition to day, month
487      * sflux balance is performed on annual basis
488        (sflxumm, sfluxmm2, bal_sfluxmm)
489      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
490        including separate counting and multipliers
491    o pkg/rbcs
492      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
493    
494    checkpoint58k_post
495    o testreport:
496     - always build in dir. "build" (if not there, mkdir build instead of building
497       & running in input)
498     - run in dir run (if it exists), in build otherwise.
499     - call prepare_run (if input/prepare_run exists)
500     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
501    o pkg/exf modifications to interpolation and rotation routines for more
502       reasonable treatment of North Pole singularity: for tracers North Pole
503       value is set to northernmost zonal-mean value, for zonal velocity it is
504       set to zero, and for meridional velocity it is set to northernmost value.
505    o pkg/exf/exf_check_range.F
506     - add tile index to diagnostics and move stop statement to the very
507       end of the routine.
508    o pkg/diagnostics: (diagnostics_main_init.F)
509      define title of isomorphic variables according to the current config.
510    o pkg/thsice with pkg/seaice dynamics:
511    - fix domain of computation (interior only, required for exf) and do exchanges
512    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
513    o towards a standard way of dealing with multi-threading in MONITOR
514      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
515    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
516       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
517    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
518    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
519    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
520       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
521    o tracer advection:
522     - clean-up and simplify calc_common_factors.F
523     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
524       advection subroutine (but still not used within DST advection S/R)
525    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
526    
527    checkpoint58j_post
528    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
529      from file (collects calls previously in FORWARD_STEP)
530    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
531    o adjoint store dir. adjusted accordingly
532    o genmake2
533      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
534    
535    checkpoint58i_post
536    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
537      on wind stress (SEAICEstressFactor defaults to 1.)
538    o Total number of Timers is finite (<=40): comment out 2 non-essential one
539      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
540    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
541      on CS-grid: no longer loosing mass.
542    o exf & curvilinear-grid: no longer modify longitude xC & xG.
543    o pkg/ggl90: fix sloppy output and fix a bug
544    o pkg/seaice: added SEAICEuseEVPpickup parameter
545      - Set to false in order to start EVP solver with
546        non-EVP pickup files when using SEAICEuseEVP
547      - fix sign error in diffusion in seaice_calc_rhs
548    
549    checkpoint58h_post
550    * Modifications for bottom topography control
551      o replace hFacC by _hFacC at various places
552      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
553      o add non-self-adjoint cg2d_nsa
554      o update autodiff support routines
555      o re-initialise hfac after ctrl_depth_ini
556      o works for 5x5 box, doesnt work for global_ocean.90x40x15
557    * Adding verification for 5x5 box (4-layer) bottom topography control
558    
559    checkpoint58g_post
560    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
561       used for mean seasonal cycle, mean diurnal cycle); add an example
562       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
563    o pkg/ggl90:
564      - add parameter (minimum surface kinetic energy)
565      - fix bug (avoiding division by zero)
566    o couple pkg/thsice to pkg/seaice:
567      - modify advection in seaice to accomodate new scalar fields to be advected
568      - only muliDimAdection scheme work with seaice/thsice
569      - mapping of thsice-variables to seaice-variables, back and forth
570      - does not break the verification experiments, but does not give the
571        desired results either
572    o pkg/seaice
573      - make (default) second order advection a bit less confusing?
574    
575    checkpoint58f_post
576    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
577      to pkg/seaice):
578      - new routines thsice_map_exf and thsice_get_exf provide the interface
579      - add an additional formal parameter to thsice_solve4temp
580    o pkg/exf:
581      - add new fields wspeed, snowprecip (to be able to couple to thsice)
582      - correct Stefan-Boltzmann constant
583      - new parameter for longwave surface emittance
584      - separate some stuff from exf_bulkformulae into new routines  
585        exf_radiation, exf_wind
586      - add new parameters and constants: longwave emissivity for ocean, ice
587        and snow, evaporation parameters over ice
588      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
589        either wind from stress or stress from wind
590    o pkg/thSIce:
591    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
592    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
593       and THSICE_CALC_THICKN
594    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
595    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
596      to make debugging easier.
597    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
598    o pkg/bulk_force:
599      - clean-up comments and parameters ;
600      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
601    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
602      generate new output for test-experiment: aim.5l_cs.thSI
603    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
604      testreport accordingly
605    
606    checkpoint58e_post
607    o SEAICE_CGRID adjoint done
608    o R_STAR adjoint implemented.
609      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
610      * need to sort out init. of h0facc, etc.
611    o Make pkg/profile fully independent of ecco,cost, etc. stuff
612      to be able to use it in pure forward.
613    
614    checkpoint58d_post
615    o upgrade simple test-experiment to tutorial example:
616     step.1: duplicate the experiment and (step.2) will remove the old copy.
617      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
618      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
619      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
620      tutorial_global_oce_biogeo    <- copy of dic_example
621      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
622      tutorial_plume_on_slope       <- copy of plume_on_slope
623      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
624      tutorial_global_oce_optim     <- empty for now (David ?)
625      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
626     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
627    o correct a sign problem in cost_scat.F
628    o obcs and ptracers: fix boundary conditions for advections schemes
629      with larger stencil
630    o thsice adjoint: start
631    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
632      completeness
633    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
634      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
635    o ptracers adjoint:
636      * avoid extensive recomputatations
637      * fix missing re-init. of gptr (missed by TAF)
638    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
639      me to turn off the excessive output to STDOUT that this package produces
640    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
641      and add those terms in Vector-Invariant formulation.
642    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
643      if the control period (xx_hfluxperiod etc) is 0
644    o in profiles pkg, clean routines and fix details
645    o in ecco pkg, reading ssh data:
646      fix problem in case the model does not start at iter0=0
647    o fix mnc-pickup/restart for ptracers
648    o new package prifiles:
649      code to compute profile-based cost by Gael Forget
650      (modifs in ecco, ctrl, autodiff)
651    o Benign bug fix in initialization (spotted by M. Mazloff) of
652      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
653    
654    checkpoint58c_post
655    o adjoint: finish NLFS adjoint and provide reference output in
656      verification/global_ocean.90x40x15/results_ad_nlfs
657    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
658      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
659      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
660      with SEAICE_CGRID defined.
661    o move calendarDumps from "data" to "data.cal" and clean-up the code
662      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
663    o add useEXF & useCAL flags (for now, set in hard-coded way)
664    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
665      (were missing in NH mode, and wrong in quasihydrostatic mode).
666      waiting for Chris updated version of calc_gw to add those CALLs.
667    o fix bug in quasihydrostatic S/R ;
668      add a test for this option: global_ocean.90x40x15.qshyd
669    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
670      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
671    o add on/off flag useOffLine for package OFFLINE
672    o seaice:
673      - modify advection so that it works also on the C-grid
674      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
675        problem in multi-tile runs with C-grid
676      - add flags for clipping ice velocities and/or masking solver forcing
677      - fix drag (ocean on ice) formulation and a bug that caused noise in the
678        C-grid solver
679      - added a few comments to seaice_diffusion.F
680      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
681        are now exclusive)
682      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
683        required re-ordering the code a little:
684       + make DAIRN global variable (defined in SEAICE)
685       + move computation of the viscosities eta and zeta into a new separate
686         routine (because I need to recompute them in seaice_ocean_stress.F)
687    
688    checkpoint58b_post
689    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
690      update output.txt of exp. aim.5l_cs.thSI
691    o various mnc cleanups and improvements:
692      + shrink lookup tables by factor of ~4
693      + better error reporting when running out of lookup space
694      + able to handle longer path/file names (up to 500 chars)
695    o adjoint:
696      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
697      - TBD: "hidden" mom_vecinv recomp. in dynamics
698    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
699     (allow to differentiate between forcing components using new integer flags:
700      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
701     and add new flag to put Dissipation tendency out of Adams-Bashforth.
702    o ecco
703      - enable trend removal from SSH anomaly obs.
704    o adjoint
705      - a fix for PmEpR when #undef EXACT_CONSERV
706      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
707      - try to fix "hidden" recomp. in forward_step for NLFS
708        (NLFS seems broken sometimes after I checked it in)
709    o seaice:
710     - add c-grid version of the dynamic solver:
711       + three new routines that are the c-grid substitute lsr, dynsolver
712         and ostres
713       + put a few fields that were local to dynsolver into global common
714         blocks, so that I can move the computation of stresses etc into
715         seaice_lsr (saves coding but may break the adjoint).
716     - replace more hardwired parameters by runtime parameters
717     - add ice masks that mask the rhs of the implicit solvers where there
718       is no ice (commented out in seaice_dynsolver, because i am not sure
719       if this works properly), eventually this should replace the clipping
720       of ice velocities in seaice_dynsolver to +/-40cm/s.
721    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
722      include it only where its needed
723    o move balancing of fluxes before the call of external_forcing_surf
724    o seaice:
725      - correct units of turning angles (now they are really in degrees)
726      - move computation of GWATX/Y out of main routine into dynsolver
727      - initialize GWATX/Y in seaice_init
728    o Apply mask on Fresh-Water flux (needed for SSH forcing).
729      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
730    o seaice: add runtime flags for turning angles (default to zero)
731    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
732      and trend from exf forcing and ctrl control adjustments
733    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
734      (since checkpoint57x_post)
735    o change the default rotation period to 86164.s = the Earth rotation
736    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
737      and based on a reference stratification. Tested within hs94.cs-32x32x5.
738    o seaice advection: add code for choosing between the default (2nd order
739      central differences) and multiDim advection schemes provided by
740      pkg/generic_advdiff
741    o seaice:
742      - removed all references to SEAICE_GRID.h fields from
743        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
744        (cubed-sphere configuration will change a little)
745      - grid computations in seaice_init are obsolete now.
746      - cleaned up code a little so that is easier to read (hopefully).
747      - added new (better?) discretizations of default advection and diffusion
748        (turn on with SEAICEuseFluxForm)
749      - replace 1 in 3d global fields by kSurface in growth.F
750      
751    checkpoint58a_post
752    o seaice:
753      - bug fix in advect.F
754    o shelfice:
755      - separate shelfice load anomaly from pload (breaks with time
756        dependent forcing), => introduce constant field shelficeLoadAnomaly.
757        Its default is 0., but it may be computed more cleverly from (unknown)
758        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
759        done offline. A good approximation of the pressure load anomaly is
760        necessary to avoid large initial adjustment processes underneath
761        deep-reaching shelfice.
762      - small fix in ISOMIP shelfice_thermodynamics
763      - add more sophisticated thermodynamics of Hellmer (1989), this is
764        now the default
765      - give a few constants more intuitive names
766    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
767      if bulk formulae are used in long integration (especially EmPmR). Turn
768      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
769      if balancePrintMean, the imbalance that is substracted is printed to
770      STDOUT.
771    o fix bug (typo) in obcs_apply_eta.F
772    o add a new package shelfice which enables us to model the circulation
773      underneath shelf-ice with draughts of hundreds of meters.
774     - works
775     - to do: + include improved thermodynamics
776              + check whether kSurfC (from model/inc/SURFACE.h) can be used
777                instead of new field kTopC
778              + can we use topoFile, Ro_surf and existing code in ini_depth.F
779                instead of new field R_shelfIce and new code in ini_depth.F
780                and ini_mask_etc.F?
781              + adjust vertical mixing schemes?
782    o seaice pkg:
783     - add a cpp-flag to include a simple formula for a salinity dependent
784       freezing point of sea water at the surface
785     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
786       meridional stresses are now different (and hopefully correct)
787    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
788       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
789       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
790    o pkg/diagnostics: add options and parameters for regional-statistics
791       diagnostics ; define regions by reading a region-mask from a file
792       (might add other options later)
793    o pkg/bulk_force:
794     - add option and parameters to use AIM surface-flux formulae.
795     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
796       others forcing fields (defined in PARM05, parameter file "data") are loaded
797       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
798     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
799     - use the right EXCH call for uwind,vwind (to work on CS-grid).
800     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
801       and parameters (note: calcWindStress replaces .NOT.readwindstress).
802     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
803    
804    checkpoint58
805    o add "--embed-source" option to genmake2 which, when the supporting
806      tools can be compiled (as determined by genmake2) will turn on the
807      embed_files package which then embeds the entire MITgcm source code
808      (*.[fFhc] + Makefile) used for the build within the executable
809      - requested by CNH but off by default
810      - adds a paltry <9MB to the mitgcmuv executable in most cases
811      - only writes the output when useEMBEDSRC in eedata is true
812    o clean up 3-dim. relaxation codes:
813      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
814      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
815      * Thanks to Tom Haine for testing!
816    
817    checkpoint57z_post
818    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
819      affects output (@ truncation level) of exp. plume_on_slope ; updated.
820    o fix the pickup behavior for obcs in combination with ptracers
821    o fix a bug in ptracers_external_fields_load
822    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
823      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
824    o transfered surface NH pressure to eta field (if exactConserv).
825    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
826         and update lab_sea output.txt file.
827    o completing 3-dim. relaxation code: additional term
828         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
829      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
830      * At compile time, in "EXF_OPTIONS.h" set
831          #define  ALLOW_CLIMTEMP_RELAXATION
832          #define  ALLOW_CLIMSALT_RELAXATION
833      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
834          tauThetaClimRelax3Dim = 15552000.0,
835          tauSaltClimRelax3Dim  = 15552000.0,
836      * 3 cases:
837          1) Use a constant-in-time 3-dim. field
838          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
839          3) Real-time relax. to time-evolving prescribed field
840    o Adding Laplacian-type smoothness constraint on
841      initial and boundary (forcing) controls (ic, bc)
842      * enable at compile-time via
843        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
844      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
845      * Absolute scale somewhat unclear so far
846      * no area weighting was included since no other cost term does so far
847    
848    checkpoint57y_post
849    First step for a NLFS adjoint
850    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
851    o new init. routines for calc_r_star, calc_surf_dr
852    o still need to deal with ini_masks_etc
853    o testreport seemed happy
854    checkpoint57y_pre
855    
856    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
857    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
858    o add new offset feature to offline pkg (plus minor cleanup)
859    o cfc fixes for final year of integration
860    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
861      be in GCHEM_OPTIONS).
862    
863    checkpoint57x_post
864    o fix testreport Pb in multiple test experiment.
865    o cleanup our namelist syntax in verification:
866      - make it more F95 standards compliant (some work still needed)
867      - allows the vast majority of our tests to work with gfortran
868    o Non-Hydrostatic:
869     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
870     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
871    o Allow to apply AB on T,S rather than on AB(gT,gS):
872     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
873     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
874       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
875     - need a "clever" read_pickup to restart from the other AB formulation
876    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
877    o remove some unused variables (reduces number of compiler warnings)
878    o adjoint
879      * Disable useVariableViscosity for adjoint for time being
880        (there are a number of extensive recomputations)
881      * Initialize certain variables needed for adjoint
882    
883    checkpoint57w_post
884    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
885                 fix the singleCpuIO RS version of MDSWRITEFIELD
886       and add a WARNING if using globalFiles=T with multi-processors.
887    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
888      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
889    o tracer advection scheme:
890      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
891       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
892       was not very convenient).
893      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
894       (further tests needed for the implicit DST & Flux-Limiter schemes).
895    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
896      and sRef for convenience, handy, when you want to initialize
897      ptracers in a large domain with a constant non-zero value. Also,
898      untangle ptracers_init.F a little.
899    
900    checkpoint57v_post
901    o change dome exp. to use variable viscosity in side-drag terms.
902    o remove all the files from the cfc_offline test since they are now
903      incorporated into tutorial_cfc_offline which has been producing
904      identical results for a few days of testing
905    o add new parameter: sideDragFactor to enable half-slip-side BC
906      and change side-drag S/R to use viscosity from mom_calc_visc
907      (can switch back by setting sideDragFactor=0.); affects results at
908      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
909       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
910    o vorticity & strain are now computed without masking, to account for
911      no-slip-side BC in variable viscosity calculation ; mask is applied
912      anyway later on, before computing advection/coriolis terms.
913    o modify exp4 to test new obcs support for reading from external files
914      and for passive tracers
915    o fix behavior of ptracers_monitor when monitor output is written to a
916      netcdf-file; still not independent of monitor.F (writes in the same
917      file).
918    o change default value of tRef (put a uniform, meaningful value for ocean
919      & atmos) and initialize sRef (was missing, as Martin mentioned).
920    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
921      to be proportional to enstrophy dissipation length.  Thus,
922       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
923      This is now consistent with Smagorinsky and with the manual.
924    
925    checkpoint57u_post
926    o OBCS and PTRACERS: add open boundary support for passive tracers
927      - either use homogenous (pseudo) v.Neumann conditions or prescribe
928        OB-values from file; this is not different from the way theta and salinity
929        are treated
930      - however, Orlanski-radiation conditions are not supported, and the model
931        will stop if you use pTracers and Orlanski at the same time.
932      - beefed up the rountine obcs_external_fields_load: now only those open
933        boundary values are overwritten with values from files for which there
934        are really files, otherwise the OB-fields remain untouched. This makes
935        it possible to use different OBs at different ends of the domain (as
936        with EXF)
937    o reduce number of exch calls in shap_filt (s2).
938    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
939      truncation level) 4/5 MLAdjust test results (11&12 digits match).
940    
941    checkpoint57t_post
942    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
943    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
944      same truncation, independent of the face number: affects affects several
945      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
946    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
947      note that biharmonic viscosity + no-slip was not tested in any experiment.
948    o fix bug in non-linear free-surf side-drag ; generate new output for
949      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
950    o make mnc honor the writeBinaryPrec flag for most kinds of output
951    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
952    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
953      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
954    o add brackets in multi-terms sum to get same truncation, independent of
955      the face number (manage to get exactly same value of gU,gV at the cs-edge)
956      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
957    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
958      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
959      a maximum grid-scale Reynolds number.  Also, changes all length calculations
960      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
961      Suggested values of viscosity parameters found in mom_calc_visc.
962      Many new viscosity diagnostics available.
963    
964    checkpoint57s_post
965    o Add clearing-house for viscosity calculations, mom_calc_visc and
966      correct numerous bugs in LeithD and Smagorinsky discretizations.  
967      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
968      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
969      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
970      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
971      The Strain-Tension form is now called with useStrainTensonVisc=.true.
972      ViscAhStrain and viscAhTension are now retired.
973    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
974    o In response to JMC's bug report, genmake2 now ignores any soft-links
975      that it finds in the *current* directory when searching for files.
976      Soft-links found in any other source directories will still work as
977      they did before.
978    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
979      a C routine to unlimit the stack size
980    o mnc-ify pkg/aim snapshot vars
981    o mnc-ify pkg/land as requested by Daniel
982    o various changes to mnc including:
983      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
984      - output can now be grouped so that all files within a group
985          change the ITER portion of their names in lock-step together
986      - can now read ("global") PER-FACE (in addition to PER-TILE) files
987          and works with both EXCH1 and EXCH2 (but needs more testing)
988      - writing works for all verification test cases w/ g77 on Linux
989    
990    checkpoint57r_post
991    o make MNC variable initialization happen earlier
992    o add diagnostics for (almost) each term of the momentum Eq.
993    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
994    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
995    o remove MINIMAL_TAVE_OUTPUT option ;
996      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
997    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
998      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
999    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1000    o add time-dependent SST, SSS control
1001    o cost terms in ecco/ modularized (new cost_generic.F)
1002    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1003    o new infrastructure for seaice model vs. obs misfits in seaice/
1004      * driver from the_main_loop.F is seaice_cost_driver.F
1005      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1006      * gradient check in Exp. 6a of natl_box_adjoint/
1007    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1008      (see README file)
1009    
1010    checkpoint57q_post
1011    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1012    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1013      - bug was reported by Jean-Michel and Ian Fenty
1014    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1015      update exp. cpl_aim+ocn output.
1016    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1017      Needed for high-res. runs with large global files
1018      to be able to limit tapelev size
1019    o Changed some tests for adjoint:
1020      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1021      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1022      * global_ocean.90x40x15/ back to default 3-level checkpointing
1023    o Modifications to enable scripted COMMON to MODULE conversion
1024      * verification/OpenAD/code/ has necessary scripts and description;
1025      * converts, compiles and runs successfully;
1026    
1027    checkpoint57p_post
1028    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1029    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1030      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1031    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1032    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1033      (was already the case for dissipation with mom_vecinv,
1034       and also the case for grad.PhiHyd when staggered-timeStep)
1035      This will allow to put dissipation out-off the AB time-stepping.
1036     Unfortunately, affects truncation error. Update output of exp. that "fails"
1037      (cg2d matching number) and leave the others for later: front_relax(10),
1038      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1039      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1040    
1041    checkpoint57o_post
1042    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1043      (2) its ready to be documented during the 20050801 DocFest
1044    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1045      for ideal_2D_oce and lab_sea on linux_ia32_g77
1046    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1047      in global1x1_tot/code_seaice_adj to access indices 32, 33
1048      (worth another tag)
1049    
1050    checkpoint57n_post
1051    o adding precip control xx_precip 32
1052    o adding swflux control xx_swflux 33
1053    o Replacing 10 forcing penalty cost routines by 1 generic.
1054    o Implementing partitioning in time-mean and variable adjustment
1055      for atmos. state.
1056    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1057    o in natl_box_adjoint:
1058      * updated exp 1 to 10
1059        (but does not have time-mean vs. variable split results yet)
1060    o updated global1x1/*_seaice_adj/
1061      to incorporate latest changes
1062    o enable useSingleCpuIO for mdsio vector routines
1063      (applies in particular to tapelev I/O)
1064    o removed inefficient K-loop in all active_file*control*.F
1065    
1066    checkpoint57m_post
1067    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1068      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1069    o pkg/exch2: filling of face-corner halo regions is optional
1070      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1071    
1072    checkpoint57l_post
1073     tag before updating tutorials (pre-release-2)
1074    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1075       for output and interpolation of input fields onto model grid)
1076    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1077       Affects results of exp. rotating_tank ; update output.txt.
1078    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1079          and taking the square quantity and/or using a fraction-weight field.
1080    o fix aim_diagnostics_init.F mate numbers.
1081    o add mnc output capability to diagnostics/diagstat and update
1082      our cvsignore files for the ACSII output generated
1083    
1084    checkpoint57k_post
1085    o lab_sea now uses diagnostics package and provides a suite of
1086      new EXF diagnostics output.
1087    
1088    checkpoint57j_post
1089    o exf
1090      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1091        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1092        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1093      * extended diagnostics output
1094        - now includes all EXF variables
1095        - hs, hl moved to common block
1096        - separate S/R for diagnostics, called after ctrl vector is added
1097        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1098        - EXFqnet contains true Qnet (i.e. includes qsw)
1099      * updated verif. lab_sea, global_with_exf
1100      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1101        to ensure that diagnostics sees a true EXFqnet
1102    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1103    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1104      several times with different frequencies.
1105    o mnc-ify the thsice package as requested by Daniel Enderton
1106      - the monitor--MNC output needs work
1107      - many attributes need to be added (most are currently blank)
1108    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1109      - many attributes need to be added (most are currently blank)
1110    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1111    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1112    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1113      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1114         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1115    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1116     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1117    
1118    checkpoint57i_post
1119    o Diagnostics package was changed: diagnostic allocation is now deactivated
1120      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1121    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1122      add 1rst Order upwind vertical Shear.
1123    o add a quick fix for A/B checkpointing in OFFLINE mode
1124    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1125      end-run around the C/Fortran linking horror in eesup/src/timers.F
1126    o added pkg/runclock: allows user to terminate run based on wall clock
1127    o added non-hydrostatic scaling parameter: nh_am2
1128    o pkg/my82: futile attempt to make results compiler-independent by adding
1129      some "_d 0", etc. no effect.
1130    o for mnc output, fill the 'T' coordinate var with myTime and create a
1131      separate 'iter' variable for iteration count
1132    o pkg/diagnostics:
1133      add new capability: output of Global/Regional & per-level statistics ;
1134      tested against monitor output (including land & thSIce) on various exp.
1135    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1136    
1137    checkpoint57h_done
1138      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1139      data.diagnostics, data.gchem, data.ptracers) is done.
1140    
1141    o pkg/diagnostics: prepare for Global/Regional statistics.
1142      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1143    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1144      and rename it: DIFFERENT_MULTIPLE
1145    
1146    checkpoint57h_post
1147    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1148    o pkg/diagnostics: change output frequency, now in seconds (instead
1149      of Nb of iterations). This requires to change data.diagnostics.
1150    checkpoint57h_pre
1151    
1152    o in mnc, let the user create the output dir if both mnc_outdir_date
1153      and mnc_outdir_num are false
1154    o add fflags() to pkg/diagnostics which allows one to specify, on a
1155      per-file basis, the file precision [default behavior is unchanged]
1156    o added diagnostics to pkg/kpp, including computation of mixed layer
1157      depth based on a temperature/density criterion
1158    o updated verification/natl_box to test the new pkg/kpp diagnostics
1159    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1160    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1161    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1162      not mnc -- this mistake was found by JMC and is now corrected
1163    
1164    checkpoint57g_post
1165    o add Adams-Bashforth 3rd Order time stepping:
1166      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1167      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1168    checkpoint57g_pre
1169    
1170    o make lambda[Theta,Salt]ClimRelax spatially varying
1171      (default remains spatially uniform constant based on tau)
1172    o added new control variables
1173      * init. uVel, vVel, etanN
1174      * lambda[Theta,Salt]ClimRelax
1175    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1176      (suggested by G. Forget)
1177    
1178    checkpoint57f_post
1179    o add parameter "baseTime" = model base time = time at iteration zero
1180      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1181      account for baseTime shift
1182    o move Coriolis arrays from PARAMS.h to GRID.h
1183    checkpoint57f_pre
1184    
1185    o mnc-ifying the seaice package
1186    o introduced an alternative length scale calculation for use in the limiting
1187      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1188    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1189    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1190      as well as grad(vort3).  Made it compatible with both approximate form
1191      for the cubed sphere and full form of these gradients.  Added flag
1192      useFullLeith to select between approximate and full form.  
1193    o add "d0" in getcon.F to reduce differences between compilers/platforms
1194      update output.txt of exp. fizhi-gridalt-hs
1195    o change port_rand funtion to allow to set the seed.
1196    o fix obscure MNC bug involving conversion between reals and integers
1197      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1198        new version is now more standards-compliant
1199    o adjoint-related modifications
1200      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1201      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1202      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1203    
1204    checkpoint57e_post
1205    o Adding eddy stress controls a la Ferreira et al.
1206    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1207    
1208    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1209      update output.txt of exp. fizhi-gridalt-hs
1210    o add more "Z" dimensions and associated coordinate vars to MNC
1211    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1212    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1213      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1214      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1215      months and years.  Requires pkg/cal.
1216    o diagnostics: add pickup functionality
1217      - off by default for backwards compatibility
1218      - current version only uses MDSIO -- MNC will be added
1219    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1220    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1221    
1222    checkpoint57d_post
1223    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1224    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1225      output from the diagnostics package
1226    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1227    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1228      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1229    o add coordinate variables to the MNC output from the diagnostics package
1230    o change MNC-flags default value: true when useMNC=TRUE
1231    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1232      the ability (off by default) to read the grid information using MNC
1233    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1234    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1235    o do snap-shot diagnostics at the middle of the time-interval (instead of
1236      at the end).
1237    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1238      new test for AIM with thSIce + slab-ocean
1239    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1240    o move state variable diagnostics to the beginning of the time step ;
1241      (note: still needs some work specially for snap-shot diagnostics)
1242      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1243    
1244    checkpoint57c_post
1245    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1246    o generate new output.txt files on faulks with g77 & the new -ieee option
1247    checkpoint57c_pre
1248    
1249    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1250      update output.txt of exp. global_ocean.90x40x15
1251    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1252      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1253    o add saltFlux(+File) forcing capability with periodicExternalForcing
1254    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1255    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1256    o improvements for the MNC output from DIAGNOSTICS:
1257      - correct handling of the unlimitied dimension
1258      - all dims now have associated coordinate variables
1259      - variables located at U, V, and Corner ("Z") points are now written
1260        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1261        *all* data points are output
1262    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1263    o added pkg/seaice/seaice_monitor.F
1264    o mdsio_readfield.F can now read files visible only to master MPI process.
1265    o pkg/seaice: some test code for ice-modified ocean stress
1266    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1267      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1268      spurious negative numbers for precipitation and humidity.  Will cause
1269      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1270    o pkg/ctrl/
1271      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1272        May be enabled via doPackDiag
1273      *  introduce z-scaling of
1274         + gradient (doZscalePack) and
1275         + control (doZscaleUnpack)
1276    o pkg/mdsio/
1277      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1278      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1279    
1280    checkpoint57b_post
1281    o simplify options in diagnostics_fill arguments (remove weird combinations)
1282    o fix MNC coordinate variables so that they now contain per-face index
1283      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1284      general, EXCH2 grids are only aligned to a "local" coordinate system
1285    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1286    o Implement instantaneous output within pkg diagnostics:
1287      setting a negative frequency in data.diagnostics produces
1288     "snap-shot" output (as opposed to time-average if freq > 0)
1289    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1290      NOTE: change ptracer diagnostics name: use 2 characters to work with
1291            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1292    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1293      becomes the coordinate variable for the 'T' dimension
1294    o add CF-style coordinate variables to MNC
1295      - just a first cut:  numbers are meaningless on the cubesphere and
1296        missing along the T axis but otherwise it works!
1297    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1298    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1299    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1300      this is based directly on what the model compute, so that the content of
1301      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1302    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1303    o clean up build options files for SunOS, in particular
1304      - remove -traditional from xmakedepend
1305      - change -xarch=v9 to -xarch=native for f77
1306      - restore use of make (not gmake)
1307      - add CC=gcc if using g77
1308    o changes per discussion of AM, JMC, & EH3 today:
1309      - move redundant "grid" variables out of "state" -- in preparation of
1310        creating proper CF-style coordinate variables and in recognition
1311        that any/all grid variables can be easily copied (eg. w/NCO) from
1312        the grid files into any of the other NetCDF files
1313      - *always* output grid variables with MDSIO (this will eventually be
1314        changed)
1315      - output MNC grid file if useMNC is true
1316    o every instance of _END_MASTER() has been found and replaced with
1317      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1318      preprocessors
1319    o re-arrange diagnostics pkg initialisation:
1320     - allow each package to extend the available diagnostics list
1321     - add some checking and fix small problems (multi-threaded, ...)
1322     - new S/R diagnostics_fill (replace fill_diagnostics):
1323       look through the short list of active diag. (instead of the long list)
1324       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1325    
1326    checkpoint57a_post
1327    o this set of changes restores TAMC compatibility
1328      tested for global_ocean.90x40x15 adjoint on trough
1329      (what a pain)
1330    
1331    checkpoint57a_pre
1332    o some modifs in tools/build_options for sunos
1333    o call ctrl_pack for ctrl at end for optimcycle=0
1334    
1335    checkpoint57
1336    o add horizontal bi-harmonic viscosity for vertical velocity
1337      - new parameter viscA4W (defaults to viscA4)
1338      - affects only non-hydrostatic code
1339      - to be done: no-slip lateral boundary conditions
1340    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1341    o implement Implicit Vertical advection for pTracers
1342    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1343      (implemented also for implicit vertical diffusion & advection)
1344    o OBCS: extend application of tracer open boundary conditions
1345      to a strip beyond the boundary of width Olx/Oly
1346    o add call monitor to TAF set of required calls (flow directives)
1347      and include in natl_box_adjoint
1348    o untangle a few ifdefs related to cost, ctrl, autodiff
1349      untangel a few ALLOW_ECCO_OPTIMIZATION
1350    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1351      (theta2, salt2 in ecco_cost_weights)
1352    
1353    checkpoint56c_post
1354    o OBCS as control variables
1355      - update ctrl_ad_diff.list, obcs_ad_diff.list
1356      - remove balance of obcs controls from default
1357      - fix index bug nobcs in ctrl_init
1358      - fix dummy fields filen in ctrl_pack
1359      - add dummy weights for obcs
1360    o lsopt: comment out fort.94 output
1361    o optim:
1362      - remove unnecessary header files
1363      - adjusted namelists
1364      - add xerbla.F to Makefile
1365    o exf:
1366      - multiple modifications of exf_check_range
1367      - unit change in exf_init_runoff from [m/year] to [m/s]
1368    o mdsio:
1369      - i/o-vector change debugLevel from debLevA to debLevB
1370    
1371    checkpoint56b_post
1372    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1373      is called from DO_THE_MODEL_IO
1374      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1375      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1376      - clean up PTRACERS_WRITE_TIMEAVE a little
1377    o add another verification experiment that tests both the cfc-pkg and
1378      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1379      reactive tendencies treated inline with regular timestepping
1380    o testreport previously did a lousy job of comparing small numbers, so
1381      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1382      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1383      testreport.
1384    o ptracers_monitor: bug fix for MPI
1385    
1386    checkpoint56a_post
1387    o GCHEM: finish reorganizating the package
1388      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1389        (introduces another 3D-array for each passive tracer, but only if
1390        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1391        gchemTendency is not needed because the timestep is done separately)
1392      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1393      - GCHEM is now---more or less cleanly---separate from PTRACERS
1394      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1395        so clear to me how that should be done in a general way.
1396    o CFC: improve formatting of output in CFC_ATMOS
1397    o PTRACERS:
1398      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1399        that ALL experiments with ptracers enable can be checked. This makes
1400        GCHEM_MONITOR obsolete.
1401      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1402        monitorFreq
1403      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1404    o add PTRACERS (PTR0[1-5]) to testreport output
1405    o exf_check_range:
1406      * default changed to .TRUE.
1407      * will check values for niter0 if debLevA, every timestep if debLevB
1408      * STOP in exf_check_range if 'out of range'
1409      * range chosen generous to allow for potential extema
1410      TBD: a version with stricter range
1411           permitted range would be runtime parameters
1412    o GMredi:
1413      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1414      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1415      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1416    o GCHEM:
1417      - move call to GCHEM_FORCING_SEP, so that it is now called before
1418        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1419      - introduced a useGCHEM runtime flag and applied it everywhere.
1420      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1421        this flag is now only visible within GCHEM-pkg routines.
1422      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1423        be replaced by a 3D array that is computed before thermodynamics; for
1424        this, the tracer ID iTracer had to be included into the parameter list
1425        of ptracers_forcing
1426      - set up forward_step to call gchem_forcing, that will replace
1427        gchem_forcing_int in ptracers_forcing
1428      - cleaning up
1429    o small cleaning of exch2: remove files that are also in eesupp/src
1430    
1431    checkpoint56
1432    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1433    o mnc: cleanup "full" files--fixes out-of-memory problem
1434    o ECCO-GODAE
1435      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1436      * fully merged and updated from SIO code
1437        windstress sign change affects
1438        - exf_inscal_[u/v]stress
1439        - sign of xx_tau[u/v] adjustments
1440        - signs in cost_scat
1441      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1442      * natl_box_adjoint updated and compressed
1443      * 2-level checkpoint switch added
1444        (tested in EXP. 1 of natl_box_adjoint)
1445      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1446    o SVD
1447      * first complete, non-hacked version for SVD calculations
1448      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1449        performed via direct access files admtlm_vector.it????
1450        (via ctrl_[un]pack)
1451      * optimcycle is used for ARPACK iteration counter
1452        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1453      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1454        and add linear transforms where necessary
1455      * controls are initial/final SST, SSS (can be extended; need to check
1456        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1457    o mdsio: filename info to both stderr, stdout
1458    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1459      from sign change
1460    
1461    checkpoint55j_post
1462    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1463      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1464    o add consistent build directories and .cvsignore files to verification
1465    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1466    o make all subroutines 30 or less characters in length for certain older
1467      compilers to work (a thorough search only turns up two routines in
1468      pkg/ptracers)
1469    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1470      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1471    
1472    checkpoint55i_post
1473    o change arrays for total vertical diffusivity (2.D if explicit,
1474      3.D if implicit) ; each ptracer uses its own background value.
1475    o added mnc/NetCDF output capability to ocn_compon_interf
1476      - added bits to verification/cpl_aim+ocn so that it can run on
1477        ITRDA and other clusters without the mpirun "-wd" option
1478    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1479      configuration
1480    o give MNC the ability to create additional files rather than
1481      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1482      - the default is just less than 2GB which is a practical limit
1483        on many systems
1484    o Compute the non-local term using either KPP vertical diffusivity (=default)
1485       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1486    
1487    checkpoint55h_post
1488    o add verification test "vermix"
1489    o remove all the *_ioinc flags and replace with the single global
1490      outputTypesInclusive flag
1491    o allow to set a vertical profile of vertical diffusivity for T & S
1492    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1493    o useMNC moved from data.mnc to data.pkg
1494    
1495    checkpoint55g_post
1496    o Renaming carbon AD experiments to comply with testreport conventions
1497    o Updating adjoint of Held-Suarez hs94.1x64x5
1498    o Fixing directives for non-ECCO forward_step, after ECCO directives
1499      have been fixed to avoid recomp. of do_oceanic_phys
1500      Works well for global_ocean.90x40x15,
1501      but recomp. issue remains for carbon
1502    o Updating adjoint output for natl_box_adjoint after
1503      pkg/ecco has been modified (see taga c55d_post)
1504    
1505    checkpoint55f_post
1506    o rename to timeave_init_fixed
1507    
1508    checkpoint55e_post
1509    o some delicate re-shuffle of store directives to avoid one
1510      extra call of do_oceanic_physics
1511      affects ecco_the_main_loop.F, do_oceanic_physics.F
1512      checkpoint_lev1_directives.h
1513    o NB: this may break global_ocean adjoint temporarily,
1514      but it is clear how to fix it. Will do later, need this now.
1515    
1516    checkpoint55d_post
1517    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1518    o ecco_cost_weights is modified to 1x1 runs
1519    o modifs to allow observations to be read in as
1520      single file or yearly files
1521    o enable to read exf forcing fields as either
1522      single file or yearly files (flag useExfYearlyFields)
1523    checkpoint55d_pre
1524    
1525    o switch between 2-level and 3-level checkpointing
1526    o add ability of MNC to write local and "partial" (eg. 2D slices where
1527      the full 3D field is never actually stored) arrays to NetCDF files
1528      with the correct (that is, the complete multi-dimensional) set of
1529      array indicies
1530      - used in mom_vecinv() to write the diagFreq output
1531      - tested (demonstrated) in verification/aim.5l_cs
1532    o further mnc-ification
1533      - add verification/lab_sea to the list with mnc setups
1534      - fix undefined mnc v-names in cd_code
1535      - add kpp to mnc output (both snapshot and timeave)
1536    o non-hydrostatic code
1537      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1538        in calc_gw.F
1539      - defaults to viscAh
1540      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1541        friction or Leith) in non-hydrostatic mode, as long as there is
1542        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1543    o pkg/cost
1544      extend simple cost functions to treat time mean quantities
1545      (T,U,V) via cost_accumulate_state from cost_tile
1546    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1547        be 2 times larger than the minimum size the advection scheme requires.
1548        now get a perfect conservation of salt in advect_cs test-exp (updated)
1549    o GGL90 (Gaspar's TKE mixed layer)
1550      - add horizontal diffusion of TKE, requires exchanges in
1551        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1552        default. In OPA there is no horizontal diffusion of TKE but the
1553        mixing coefficients are computed from a horizontal average of TKE of
1554        6 points or so. I think that diffusion has a little more physical
1555        justification.
1556      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1557        was in vain)
1558      - mask tke-variable in ggl90_init
1559    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1560    o fix biharmonic diffusion on CS-grid.
1561    o more obcs stuff
1562      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1563        for reading boundary values. This routine is called from
1564        obcs_prescribe_read
1565      - updated obcs_check
1566      - changed sponge layer relaxation parameter units for days to seconds
1567      - turned off sponge layer by default
1568      - changed argument list of OBCS_CALC to myTime+deltaTclock
1569      - fixed about 35 bugs in obcs_external_fields_load
1570    
1571    checkpoint55c_post
1572    o obcs stuff
1573      - new runtime flags useOBCSprescribe, useOBCSbalance
1574      - re-arranged obcs_calc
1575      - moved exf_getobcs to obcs_prescibe_read
1576        obcs_prescibe_read is called after ORLANSKI stuff
1577        and independent of it (executable can contain all).
1578      - updated obcs_check
1579      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1580        These may be necessary only if tangential velocities are
1581        prescribed at OB, not sure, needs testing.
1582    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1583      which simplifies the calls and passes the ifc check-bounds test
1584    
1585    checkpoint55b_post
1586    o add a 2D scalar, Z location, exchange_2 routine.
1587    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1588      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1589      affects advect_cs results (for the wrong reason): update output.txt
1590    o use a more standard discretization for biharmonic viscosity ;
1591     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1592      affects results of dome set-up: update output.txt
1593    o fix gad_advection.F (CubedSphere part), back to version 1.23
1594    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1595    
1596    checkpoint55a_post
1597    o merged code to
1598      * prescribe/read time-dependent open boundaries
1599        (works in conjunction with exf, cal)
1600      * sponge layer code for open boundaries
1601      * each boundary N/S/E/W now has its own CPP option
1602        (healthy for the adjoint)
1603    
1604    checkpoint55
1605    o up-to-date adjoint of previous breaks
1606      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1607      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1608      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1609      - carbon: * remove tr1-related adjoint verification
1610                * add ptracer as control variable
1611    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1612      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1613    
1614    checkpoint54f_post
1615    o in verification/carbin/ remove experiment related to
1616      ALLOW_PASSIVE_TRACER (array tr1 etc)
1617      code_ad/ input_ad/ results_ad
1618    
1619    o add two new packages
1620      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1621        + subject to optimization (memory)
1622      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1623        + subject to reordering (many GOTOs in the original code)
1624        + so far opps is called for every (i,j) point, and then operates in
1625          the vertical; one may want to reorder the scheme in order operate in
1626          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1627          fields)
1628    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1629      - all verification tests compile and run with linux_ia32_g77
1630      - defaults are compatible with current input files--nothing
1631        should change if you were not previously using MNC
1632      - MNC output has been added in numerous places (eg. timeave)
1633        but there are still a few writes not yet do-able with MNC
1634        (this is in progress)
1635      - flags now allow for either/or/both use of MDSIO and MNC and
1636        documentation will soon follow
1637      - numerous small formatting cleanups for ProTeX
1638    o add version info (via BUILD_INFO.h) to MNC and stdout
1639    
1640    checkpoint54e_post
1641    o add two new packages
1642      - pp81 (Packanowski and Philander, 1981), Richardson number and
1643        stratification dependent mixing
1644      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1645      - these scheme operate in a similar manner as KPP (without ghat, of
1646        course), however there is only one diffusivity that is used for both
1647        temperature and salinity (and passive tracers)ç
1648    o add offline package
1649    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1650      provided by Stephanie Dutkiewicz
1651    o genmake2: add ability to search for C compilers and cleanup test output
1652      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1653    
1654    checkpoint54d_post
1655    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1656    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1657      leading to additional shift by 5 days each year of integration
1658       (i.e. leading to considerable offset over the years)
1659    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1660    o start with no AB and no initial filtering (staggerTimeStep):
1661      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1662    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1663      (external loading & cpl import/export stay in forward_step.F)
1664    o update coupling interface to work with new staggerTimeStep
1665    o change MDSIO ptracers_pickup.
1666    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1667    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1668    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1669    
1670    checkpoint54c_post
1671    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1672      this affects (truncation error) output.txt of test-exp:
1673       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1674    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1675    o change Qnet to always be the net heat flux, (+upward).
1676      affects (truncation error) output of natl_box exp.: updated
1677    o define the max number of passive tracers in PTRACERS_SIZE.h
1678    o start to test mnc routinely in exp0
1679    o add sea-ice loading (sIceLoad) as a new forcing field.
1680    
1681    checkpoint54b_post
1682    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1683       impressive on Altix and Opteron systems)
1684    o diagnostics can now write NetCDF files through the mnc package
1685    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1686    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1687    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1688      affects (truncation error) output of lab_sea & natl_box exp.: updated
1689    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1690    
1691    checkpoint54a_post
1692    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1693    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1694    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1695    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1696      + internal_wave (shift in writing cg2d_ini_res)
1697    checkpoint54a_pre
1698    
1699    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1700      - modified verification/lab_sea and natl_box_adjoint accordingly
1701    
1702    checkpoint54
1703    checkpoint53g_post
1704    o prepare splitting of thermodynamics: store convect.counter in common block
1705    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1706      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1707    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1708    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1709    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1710    o restore adjointability
1711    
1712    checkpoint53f_post
1713    o modifications that affect AIM experiment results (update output.txt):
1714      - no advection of S at top interface Nr (pkg/generic_advdiff)
1715      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1716    o AIM pkg:
1717      - include stability function into surf.Flux derivative relative to Tsurf
1718      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1719    
1720    checkpoint53e_post
1721    o merged cylindrical coord configuration
1722    o added rotating_tank experiment
1723    checkpoint53e_pre
1724    
1725    checkpoint53d_post
1726    o faulks upgraded: re-generate output.txt that have changed:
1727       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1728    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1729    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1730    o added Sadourny discretization of Coriolis
1731      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1732      - re-enabled use of omega3 (useAbsVorticity)
1733    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1734      vector-invariant equations
1735      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1736    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1737      hopefully without new bugs
1738      - still to do: biharmonic friction for non-hydrostatic w
1739    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1740    o regenerated output for global_ocean_ebm (using -ieee)
1741    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1742      of mom_common/
1743      - simple re-arrangement of instructions within computing loop
1744    checkpoint53d_pre
1745    
1746    checkpoint53c_post
1747    o new version of coupler for AIM+thSIce and Ocean models
1748     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1749     - land: change Evaporation of snow
1750     - aim with thSIce: fix bug in snow-precip.
1751    o changes to calc_gw.F
1752     - bug fix for w^2 term near the bottom boundary
1753     - (hopefully) improve the lateral slip boundary condtions for use with
1754        partial/looped cells
1755      - because the bug fix changes two verification experiments anyway (exp5
1756        and plume on slope), change the lateral boundary condition from half slip
1757        to the value of no_slip_sides
1758    o ebm package wasnt quite up to the parallel task. Fixed that.
1759    o Adjoint of EBM package + verification
1760      * TLM OK
1761      * ADM not sufficient accuracy yet (needs further testing)
1762    
1763    checkpoint53b_post
1764    o Commiting new energy balance model to repository
1765      * package is pkg/ebm
1766      * verif. is verification/global_ocean_ebm
1767      * references are in ebm_driver.F
1768    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1769    C        Global thermohaline circulation. Part I:
1770    C        Sensitivity to atmospheric moisture transport.
1771    C        J. Climate 12(1), 71-82
1772    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1773    C        Global thermohaline circulation. Part II:
1774    C        Sensitivity with interactive transport.
1775    C        J. Climate 12(1), 83-91
1776    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1777    C        Destabilization of the thermohaline circulation
1778    C        by atmospheric eddy transports.
1779    C        J. Climate 7(12), 1870-1882
1780    o Will need long integration testing.
1781    checkpoint53b_pre
1782    
1783    o created pkg/mom_common in preparation for variable viscosity code
1784    o renamed and split ini_mnc_io
1785    o pkg/land: only liquid water can diffuse or run-off
1786    o AIM using land: soil wetness availability account for snow
1787    o added printMapIncludesZeros to EEPARMS namelist
1788    
1789    checkpoint53a_post
1790    o restore TAMC compatiility for exf_constants.h
1791      (no usage of _d in .h)
1792    o Additional storing in KPP in an attempt to fix
1793      TAMC problem with adjoint of KPP code.
1794      (no success...)
1795      Identical code works fine with TAF.
1796    o Fixed verification/natl_box_adjoint experiments.
1797      Initial conditions for Experiments 4 and 5 are now
1798      set to "SEAICE_initialHEFF=0", which is more reasonable,
1799      and hence gives results closer to that of Experiment 2.
1800      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1801    
1802    checkpoint53
1803    o stable checkpoint with up to date adjoint
1804      TLM tests only run for 1st grdchk at the moment. Its unclear if
1805      this is a code problem or a problem with resetting code for g_
1806      variables that is being autogenerated wrong.
1807      Otherwise:
1808       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1809       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1810         are both still in chaos following their security messes.
1811    
1812    checkpoint52n_post
1813    o various build (mostly genmake2) changes including:
1814      - ability to build/run more easily within Cygwin and MacOS X
1815      - more complicated Makefiles with a stronger dependence on Gnu Make
1816    o pkg/seaice modifications
1817      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1818        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1819        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1820      - changed proxy for geostrophic velocity and updated
1821        verification/lab_sea/results/* accordingly
1822      - removed ADI dynamic solver from pkg/seaice
1823      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1824        they caused a segmentation fault under certain circumstances
1825      - removed unused field WATR
1826    o bug fix in exf-package:
1827      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1828         now reflect that.
1829    o small fixes in the cal-package:
1830      - set reference date to first of January for the 'model'-calendar
1831      - failing of cal_CheckDate in cal_FullDate now actually results in a
1832        warning
1833    o small modifications in exf-package to increase flexibility:
1834      - change climtempfreeze from a constant to a runtime parameter that
1835        is specified in data.exf_clim (default = -1.9)
1836      - introduce runtime parameter windstressmax (default = 2.0) that is
1837        specified in data.exf
1838    o fix in pkg/thsice:
1839      - update Evap (Tsf changes) to be consistent with Latent heat flux
1840      - maintain snow precipitation unchanged (even if Tsf >=0).
1841     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1842    
1843    checkpoint52m_post
1844    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1845      this does not change any of the results, because myIter=0 in swfrac always
1846      lead to jwtype=2 (the default anyway), but the call makes little sense
1847      as a default
1848    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1849    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1850      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1851    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1852    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1853    o extending useSingleCpuIO option to work with new exch2 I/O format
1854      - old-style, missing-tile I/O is still accessible by defining CPP
1855        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1856    o monitor package can write to NetCDF files and/or STDOUT
1857    o fix re-definition bug in MNC_GRID_INIT_ALL()
1858    o doc/api_reference added
1859      - a framework for building an API Reference Manual using all
1860        the "protex" comments embedded in the code
1861      - see pkg/generic_advdiff, pkg/mnc for examples
1862    o MNC:
1863      - make myThid the last argument for all subroutines
1864      - new default for the grid files: NO halos
1865      - add useMNC and other run-time flags
1866      - separate per-file-group handling of the unlimited dimension
1867      - early initialization of MNC w/ flags read at the eeboot stage
1868        and lookup tables set in initialize_fixed
1869      - write all MNC output to a freshly-created directory
1870    o thermodynamics sea-ice (thsice) is now tested with testreport.
1871    o test exp. advect_cs: use the standard cs32 grid ; update output.
1872    o Added functionality to grdchk:
1873      pick global i,j,k position (or nearest wet) where to perform check.
1874    
1875    checkpoint52l_post
1876    o new land formulation:
1877      a) use ground enthalpy as prognostic variable to ensure exact
1878         energy conservation.
1879      b) account for water temperature and for latent heat of freezing
1880         in all processes (rain, run-off, ground storage)
1881      c) compute surface and ground temperature implicitly.
1882    o aim_v23 modification for new land model:
1883      a) Treat separately land / ocean / sea-ice surface fluxes
1884         to allow implicit computation of land & sea-ice surface temp.
1885      b) add snow precipitation.
1886    checkpoint52l_pre
1887    
1888    o fix problem (when 1 tile is empty) in min/max monitor.
1889    o fix bug in timeAve (u,vZetatave in common block)
1890    o no restoring terms under ice for pkg/seaice
1891    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1892    o bug fix for pkg/seaice pickups
1893    o change MNC call locations and add coordinate attributes
1894    o mask vorticity at the corner ; affects global_ocean.cs output
1895    o fix ini_curvilinear_grid ; test CS experiments with mpi
1896    o aim.5l_cs: modify sea-ice fraction input file ; update output
1897    o exf: Adding simple range check routine for exf fields after read
1898    
1899    checkpoint52k_post
1900    o removed top-level directory "diags"
1901      - we migrated these functions to pkg/timeave a long time ago
1902    o fixed bug introduced in pkg/monitor
1903    o accuracy ctrlprec = 32 insuffient for gradient checks using
1904      averaged fields (I/O via cost_averages)
1905      -> use ctrl.h in active_file*.F to control I/O precision.
1906    o paramter list of CALL ADTHE_MAIN_LOOP
1907    o added initial do_the_model_io to ecco
1908    o set all ...Freq to zero after cost_final
1909      taveFreq, dumpFreq, pChkptFreq
1910    o MAIN and ECCO differentiability restored
1911    
1912    checkpoint52j_post
1913    o fix nchklev in tamc.h for global_ocean...
1914    o Bringing flow and store directives up-to-date
1915    o Really weird thing!
1916      call do_the_model_io from the_main_loop with parameters
1917      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1918      TAF places a faulty re-call of initialise_varia
1919      after cost_final call which should not be there!
1920    checkpoint52j_pre
1921    
1922    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1923      error messages
1924    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1925    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1926      debug output
1927    o modfied mdsio_writefield.F to handle non-global files under exch2
1928    o update AIM Cubed-Sphere exp (aim.5l_cs):
1929      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1930    o update AIM Equatorial Channel exp:
1931      use standard aim_v23 pkg and change the SST fields to be more realistic.
1932    o globalFile now works with exch2
1933    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1934      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1935    o limit timeave output for hi-res integrations
1936    
1937    checkpoint52i_post
1938    o removed CPP_EEOPTIONS.h from verification/*/code
1939    o updated the tiling for global_ocean_pressure
1940    checkpoint52i_pre
1941    
1942    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1943      the old pkg/aim).
1944    
1945    checkpoint52h_pre
1946    o shortened offending lines in exch2_send_rx?.template
1947    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1948    o genmake2: add build & execute test for NetCDF code
1949    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1950      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1951    o added useSingleCPUIO flag to monitor.F and mon_out.F
1952    o added temporary hack for sea-ice dynamics on the cube:
1953      metric terms are ignored and it is assumed that
1954      there is no sea-ice on cube faces 1, 2, 4, and 5.
1955    
1956    checkpoint52f_post
1957    o added exch2 cube routines to pkg/exch2
1958    o modified hs94.cs-32x32x5 to use it
1959    o added new grid files to hs94.cs-32x32x5
1960    checkpoint52f_pre
1961    
1962    checkpoint52e_post
1963    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1964      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1965    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1966      to work with implicit vertical advection and AB ;
1967    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1968    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1969     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1970    checkpoint52e_pre
1971    
1972    o fix bug in impldiff when Nr=1 or Nr=2.
1973    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1974    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1975    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1976      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1977    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1978    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1979    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1980    
1981    checkpoint52d_post
1982    o re-tiled many expts to allow comparison in multi-processor mode
1983      - updated output accordingly
1984      - changed hs94.128x64x5 to use intial T from file rather than use the
1985        random number generator
1986    o add infrastructure in model routines for fizhi and gridalt packages
1987    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1988    o changes to permit hi-res, cubed-sphere, configuration
1989      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1990      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1991      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1992        of surface winds for the cube
1993      (A verification experiment, based on global_ocean.cs32x15, but with
1994       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1995       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1996       complete with example surface forcing files and matlab scripts to look
1997       at the output and compare it with that of global_ocean.cs32x15.)
1998    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1999       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2000       to conform to the common rule.
2001    o check-in the first version of the coupler + interfaces for multi-components
2002       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2003       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2004       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2005       - ocean and atmos. share the same horizontal grid (no interpolation).
2006       - exchanges between component and coupler is done in forward_step
2007    o new verification experiment, cpl_aim+ocn:
2008       coupled ocean - AIM atmosphere on cs32 grid.
2009    
2010    checkpoint52d_pre
2011    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2012    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2013    
2014    checkpoint52c_post
2015    o Fixing OPTIONS files for use of exf:
2016      - ALLOW_ECCO not needed
2017      - ECCO_CPPOPTIONS.h should not be included from
2018        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2019        as has been the case in the past
2020      - All cal/exf related options are currently set in
2021        single header file. Should remain so until we
2022        agree on a consistent new policy.
2023    o Removed all CPP options for cal package.
2024      cal has no more CPP options.
2025    o modified STOREs in GAD_ADVECTION
2026    o corrected key comp. for passkey
2027    
2028    checkpoint52b_post
2029    o new version: "thsice" of thermodynamic sea-ice pkg:
2030     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2031     - modify fluxes but do not change theta directly;
2032     - light cleaning of bulk_force pkg (still needed with thsice).
2033     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2034       + output_thsice.txt to test thsice & bulk_force pkgs.
2035    o put back grid & coriolis monitor output.
2036    checkpoint52b_pre
2037    
2038    o call "do_the_model_io" at the beginning (=> dump initial state)
2039    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2040    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2041      (need info on NUMBER_OF_PTRACERS)
2042    o missing PTRACERS headers in some routines
2043    o default tamc.h in pkg/autodiff supposed to crash
2044      to ensure proper customization
2045    
2046    checkpoint52a_post
2047    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2048      - moved surfaceTendencyTice from pkg/seaice to main code
2049      - subroutine FREEZE_SURFACE now limits only surface temperature
2050        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2051        => new output.txt for global_ocean.cs32x15 & global_with_exf
2052      - keep the old version of FREEZE for backward compatibility;
2053        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2054      - corresponding modifs for TAF directives
2055    o added surface flux output variables to TIMEAVE_STATVARS
2056    o time-averaged output for pkg/ptracers
2057    o fix problem with ECCO-related divided adjoint
2058      snapshot file was missing some ad-variables,
2059      but no warning issued by TAF
2060    
2061    checkpoint52a_pre
2062    o some bug fixes for #undef REAL4_IS_SLOW
2063    
2064    checkpoint52 = ecco_c52_e35
2065    o after testing adjoints of checkpoint51u_post
2066    
2067    checkpoint51u_post
2068    o this is the post-merge tag of the ecco-branch
2069      (needs another clean checkout and re-testing)
2070    o various natl_box_adjoint configs and results
2071      but no input fields
2072    o obcs adjoint not yet merged!
2073    o adding ECCO global 1x1 and 2x2 degree configs
2074    o updated/extended some store directives for seaice
2075    o pkg/ecco now containes ecco-specific part of cost function
2076    o top level routines the_main_loop, forward_step
2077      supersede those in model/src/
2078      previous input data.cost now in data.ecco
2079      (new namelist ecco_cost_nml)
2080    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2081    
2082    checkpoint51t_post
2083    o this is the pre-merge tag of the ecco-branch
2084    
2085    checkpoint51s_post
2086    o cleanup: removed various obsolete #define-s
2087    o pkg/grdchk
2088      - renamed 'ph-grd 3' to 'grad-res'
2089      - merged from ecco-branch
2090        (remaining bug fixes for obcs gradient checks)
2091      - additional high-precision output for testreport
2092        (grep for 'precision_grdchk_result')
2093    
2094    checkpoint51r_post
2095    o cleaned up or removed CPP_OPTIONS.h files
2096    o updated results for some of the tests to reflect the new
2097      optfiles (-ieee: -O0 instead of -O3)
2098    
2099    checkpoint51q_post
2100    o cd_code:
2101      - moved cd_scheme.F -> cd_code_scheme.F
2102      - separate read_checkpoint from cd_code_ini_vars.F
2103      - separated cd_code part from write_checkpoint
2104      - updated AD_SOURCE, generated .flow
2105      - added CD_CODE_VARS.h to the_main_loop
2106      - Moving cd_code specific store dir.s to pkg/cd_code
2107    o ctrl package totally restructured
2108      - pack/unpack now optional and decoupled from
2109        xx_/adxx_ I/O
2110      - ctrl_pack/unpack cleaned
2111        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2112      - confined inclusion of AD_CONFIG.h to where necessary.
2113    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2114    
2115    checkpoint51p_post
2116    o create initial cd_code package
2117      - WARNING: the initialization of fields within packages
2118        is broken because INI_FIELDS (where READ_CHECKPOINT is
2119        called) is called *before* PACKAGES_INIT_VARIABLES.
2120        This seems to be backwards since
2121        1) its important to initially zero the entire field including
2122           the "halo" region
2123        2) zeroing needs to be done *before* reading pickup info
2124           and the pickup call might or might not happen in any
2125           particular run
2126      - this needs an overhaul for R2
2127    o cleanup verification/*/code/GMREDI_OPTIONS.h
2128    o cleanup testreport
2129    
2130    checkpoint51o_post
2131    o bringing AD-related verif's up to date with genmake2
2132      - carbon/
2133      - global_ocean.90x40x15/
2134      - hs.94.1x64x5/
2135      - (front_relax/ )
2136    o (more) consistent directory structure for AD-related verif.'s
2137    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2138    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2139    o bug fix in find_alpha.F for MDJWF:
2140      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2141        change rho -> rho-rhoConst
2142      - replace call find_rho to find_rhonum
2143    o initialisation of rFlx extended to full array (required by TAF)
2144      and shifted to thermodynamics
2145    o removed PTRACERS.h in ptracers routine
2146    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2147    o Correcting initialisations for fVerU, fVerV.
2148    o helping TAF to recognize dependency on kUp for
2149      fVerU, fVerV
2150    o Replacing delZ by delR in pkg/ctrl/
2151    checkpoint51o_pre
2152    
2153    o undid all of cp51 pending some cleanups and discussion
2154    o added the [#include "AD_CONFIG.h"] statement to all files that need
2155       it for adjoint/tl #defines
2156     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2157     o removed tools/genmake since it no longer works
2158    
2159    checkpoint51n_post
2160    o modifications to make FREEZE flux visible to pkg/kpp
2161      - moved surfaceTendencyTice from pkg/seaice to main code
2162      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2163      - subroutine FREEZE now limits only surface temperature
2164        (this means new output.txt for global_ocean.90x40x15,
2165         global_ocean.cs32x15, and global_with_exf)
2166    o added surface flux output variables to TIMEAVE_STATVARS
2167    
2168    checkpoint51n_pre
2169    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2170    o added [#include "AD_CONFIG.h"] to all files that use the following
2171      defines:
2172      - ALLOW_ADJOINT_RUN
2173      - ALLOW_TANGENTLINEAR_RUN
2174      - ALLOW_ECCO_OPTIMIZATION
2175    
2176    checkpoint51m_post
2177    o incorporating changes to get TAMC/TAF working in genmake2
2178      - added new TAMC/TAF targets to the Makefile
2179      - various cleanups related to package handling
2180      - these changes should have no impact on the forward model
2181    
2182    checkpoint51l_post
2183    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2184     - faster algorithm for cal_addtime.F
2185     - higher precision arithmetic, where needed
2186     - pkg/exf *startdate variables changed from calendar date to
2187       model integration time
2188    
2189    checkpoint51l_pre
2190    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2191    o enable to apply restoring on S & T only in a latitude band.
2192    o update output (external_forcing_surf modif. change truncation errors)
2193       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2194    
2195    checkpoint51k_post
2196    o change default to: useNHMTerms=.FALSE.
2197     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2198       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2199     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2200        exp1, ideal_2D_oce
2201     - change data file of oceanic exp (leave the results unchanged for now)
2202       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2203    o set gravitySign automatically according to the vertical coordinate used
2204      (and change sign: back to "logical" value: +1 when R increases downward)
2205    o added an include barrier to the default CPP_OPTIONS.h and
2206      removed the #include "PACKAGES_CONFIG.h" from it
2207    o fix a bug in mom_fluxform (from chk51j_post)
2208    
2209    checkpoint51j_post
2210    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2211    o adjusted some flow directives (dynamics, thermodynamics)
2212    o added cubed-sphere case to test cost function
2213    o heckpoint_lev?_directives.h now include
2214      pkg-specific directives, whenever those are enabled.
2215    o Moving pkg-specific flow directives to corresponding pkg
2216      Moving pkg-specific differentiation list to corresponding pkg
2217      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2218      ---> conventions are
2219           - pkg_ad.flow
2220           - pkg_ad_diff.list
2221           - pkg_ad_check_lev?_dir.h
2222    
2223    checkpoint51i_post
2224    o merge of the branch-genmake2
2225      - knowingly breaks the older genmake
2226      - automatic generation of all ALLOW_${PKG_NAME} defines
2227      - new testreport supersedes older testscript
2228    o large number of package inclusion and header cleanups
2229    checkpoint51i_pre
2230    
2231    o new output for adjoin of global ocean vector invariant
2232    o fix for checkpoint of thermodynamic seaice and bulk_force
2233    o Steph gchem various cleanups
2234    
2235    checkpoint 51h_pre
2236    o fixed some single quotes
2237    o modify gchem pkg to be more versatile
2238    o modifications to clean up dic pkg
2239    o add pkg/cfc
2240    
2241    checkpoint51g_post
2242    o provide links for ARPACK and ADM*TLM
2243    o start removing verification/vero/
2244    o update AD-related stuff
2245      (in particular some IF-statements in model/src/ routines)
2246    o adding to verification/global_ocean.90x40x15/ adjoint of
2247      vector invariant setup
2248    
2249    checkpoint51f_post
2250    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2251    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2252      of tracer Green's fucntions for ocean inversion project.
2253    
2254    checkpoint51f_pre
2255    o Added on-the-fly spatial interpolation capability
2256        "USE_EXF_INTERPOLATION" to pkg/exf.
2257      - This is a temporary Cartesian-grid hack until
2258        the super-duper ESMF coupler becomes available.
2259      - See verification/global_with_exf/README for usage example.
2260      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2261        flags and modified pkg/seaice accordingly.
2262    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2263        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2264        non-local transport term.
2265    
2266    checkpoint51e_post
2267    o pkg/mom_vecinv:
2268      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2269      - add time-ave diagnostic of vorticity advection.
2270    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2271    o atmospheric geopotential: - include water vapor effect;
2272                                - use p^kappa in p* scaling.
2273    o land pkg: read initial state from files.
2274    o AIM : add stratospheric drag in the upper level
2275    
2276    checkpoint51d_post
2277    o change function ILNBLNK (=> last non-blank char.) to return zero
2278      (instead of the string length) when the string. char is empty
2279    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2280    o modif's to restore TAMC compatibility
2281      - avoid "_d" constructs in PARAMETER declarations
2282      - avoid interrupting lines by comment lines
2283    o Use cluster local disks for purely local I/O
2284      vs. globally visible disks needed for ctrl stuff
2285      (merged from ecco-branch)
2286      - new active_file_loc... and mdsio_..._loc routines
2287      - affected packages: autodiff, ctrl, grdchk, mdsio
2288    
2289    checkpoint51c_post
2290    o introducing integer flag debugLevel
2291      - debLevZero: suppress all output
2292      - debLevA: standard
2293      - debLevB: equivalent to current debugMode=.TRUE.
2294    o introducing pathname variable mdsioLocalDir for mdsio
2295      that can be specified at runtime
2296      (relevant for cluster I/O to local disk)
2297    `
2298    >>>checkpoint51b_post
2299    adjoint of ptracers
2300    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2301    o extended state in checkpoint_lev?, etc.
2302    o alternative ctrl/cost with tr1 or ptracer
2303    o new comlev1_bibj_ptracers
2304    o new ptracers.flow
2305    o made ptracers_forcing same as external_forcing_s
2306    o added verification for adjoint with ptracers
2307      - adm. grdchk fail so far
2308      - tlm. grdchk OK
2309      - checked tapelev/comlev recomputations: OK
2310    <<<checkpoint51b_pre
2311    
2312    checkpoint51a_post
2313    o added code for biogeochemistry package
2314      - new pkgs: dic, gchem
2315      - new subroutine in ptracers
2316    o modify code for biogeo packages
2317      - in model/src and pkg/ptracers
2318    
2319    checkpoint51
2320    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2321      - autodiff, ctrl, exf, grdchk, seaice
2322      kept separate packages
2323      - cost, ecco, obcs
2324    o updating verification/internal_wave, verification/lab_sea
2325      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2326    
2327    checkpoint50i_post
2328    o Preparing next differentiable checkpoint and sync
2329      of MAIN vs. ecco-branch
2330      - 1st step: this one is differentiable
2331      - 2nd step: next(! not this) checkpoint will have updated packages
2332                  from ecco-branch)
2333    
2334    checkpoint50h_post
2335    o new package "land": provide surface BC for AIM.
2336    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2337    o AIM: use true log-P extrapolation for near surface temp (= as in
2338        F.Molteni paper) ; update aim.5l_cs output.
2339    o New variable in PARM03 for more flexible pickups
2340    o somewhat cleaned package initialisation sequence for
2341      ctrl/ cost/ ecco/ in packages_... routines
2342    
2343    checkpoint50g_post
2344    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2345      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2346      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2347        made the default because of faster convergence than ADI
2348    
2349    checkpoint50f_post
2350    o exf totally restructured
2351      - replaced all exf_set_ routines by one generic exf_set_gen.F
2352        and made sure it's still differentiable
2353      - split exf_getffields.F into new exf_bulkformulae.F
2354      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2355      - updated adjoint/makefile and relevant verif. accordingly
2356    
2357    checkpoint50f_pre
2358     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2359          + change Evap over land. (update aim.5l_cs output)
2360     o added missing .cvsignores and made uniform across expts
2361     o changed configuration of tidal_basin_2d expt
2362     o added pkg/debug functions for tracing code in fatal crashes
2363     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2364     o new fn in pkg/monitor to stop model if solution grows too big
2365     o removed lots of single quotes from comments
2366    
2367    checkpoint50e_post
2368    o make KPP work with PTRACERS
2369     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2370       nearly a copy of kpp_transport_s
2371     - there is no analogue to SurfaceTendencyS, so I have to use
2372       gPtr(of the surface layer) instead
2373    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2374    checkpoint50e_pre
2375    
2376    checkpoint50d_post
2377    o change kpp output from multiple-record state files to single-record state
2378      files analogous to write_state.F
2379    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2380      analogous to the cg2d-related output.
2381    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2382      so that writing to internal file fn (with length 512) fails.
2383    checkpoint50d_pre
2384    
2385    checkpoint50c_post
2386    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2387    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2388    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2389    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2390    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2391    
2392    checkpoint50c_pre
2393    Merging from release1_p13:
2394    o bug fix for pkg/seaice dynamic solver
2395    o Added SEAICE_initialHEFF to pkg/seaice
2396    
2397    checkpoint50b_post
2398    o store u*,v* in gU,V instead of in guNm1,gvNm1
2399    o in order to put the momForcing out of the Adams-Bashforth:
2400      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2401      to timestep.F
2402    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2403    o re-generate output for highly sensitive test-exp:
2404       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2405    
2406    checkpoint50b_pre
2407    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2408    o corrected CPP option mismatch in exf_Bulk... functions for case
2409      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2410    
2411    checkpoint50a_post
2412    o Bug fix for merging between c50 and KPP.
2413      ikey was passed from thermodynamics to kpp_calc via
2414      common block rather than being recomputed in kpp_calc,
2415      in contradiction with new key itdkey.
2416      New key ikppkey created, and tamc.h headers updated.
2417    
2418    checkpoint50
2419    - 2nd step of merge with ecco-branch:
2420      merge changes in ecco-branch back into main trunk
2421    - bug fix in find_alpha
2422    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2423    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2424    - merged some sliced AD support routines
2425    
2426    checkpoint49
2427    merged from ecco-branch:
2428    o exf:
2429      - Enable initialisation of forcing fields to constant
2430        (runtime) values.
2431      - in exf_getffields.F
2432        Reduce i-/j-loop to interior domain, discarding overlaps.
2433        That also fixes wrong TAF-key computations for key_1, key_2
2434        with bulf formulae.
2435      - exf_init.F modify #ifdef for exf_init_evap
2436      - exf_getffieldrec.F, ctrl_getrec.F
2437        The following INT-usages are not safe:
2438          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2439          fldcount = int(fldsecs/fldperiod) + 1
2440        and were modified.
2441    o autodiff: checkpoint_lev...
2442      - updated storing for bulk formulae (some arrays were missing)
2443      - added state for seaice package
2444      - synchronized with main branch
2445    o DIVA:
2446      Modif.s in
2447      - the_main_loop.F
2448      - the_model_main.F
2449      and added cost_final_restore.F cost_final_store.F
2450      o With these changes, it is possible to fully separate
2451        the first forward run to compute the cost function (mdthe_main_loop)
2452        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2453        into separate model executions.
2454        This enables better tuning of DIVA to given queue sizes.
2455      o Loss of cost function value in consecutive DIVA runs is
2456        fixed by storing to 'costfinal' file.
2457      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2458        beginning/end of adjoint integration is accounted for.
2459      The current changes apply to TAF-1.4.26.
2460      TAF has one remaining bug, requiring one manual change
2461      (see MITgcm manual).
2462    o cal: synchronized between MAIN and ecco-branch
2463    
2464    checkpoint48i_post
2465    o Changes to restore differentiability of code w.r.t. previous tag
2466      (mostly adding new routines to make list and replacing
2467      pressure by totPhiHyd).
2468    o Updated and merged grdchk package
2469      - has both ADM and TLM checks
2470      - works for single- and multi-proc.
2471      - output cleaned
2472      - worked successfully for parallel DIVA
2473    o genmake:
2474      - Adding -platform=SP4
2475      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2476    o Modif. for DIVA:
2477      ctrl_unpack should not be called in intermediate DIVA interval.
2478      (similar thing would apply for active files such as
2479      tbar, sbar, psbar, which should not be reinitialised;
2480      only relevant for ecco-branch)
2481    
2482    checkpoint48h_post
2483    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2484    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2485    o Added SEAICE_initialHEFF to pkg/seaice
2486    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2487    
2488    checkpoint48g_post
2489    --- EOS:
2490    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2491      store total Potential in totPhyHyd for diagnostics & EOS.
2492    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2493    --- Pressure/geopotential gradient:
2494    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2495    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2496      ( changes results of global_ocean_pressure )
2497    o NLFS + z-coord.: add eta*Rho' contribution.
2498    o accurate phiHyd when using interface-W at the middle between 2 centers
2499     ( changes results of ideal_2D_oce )
2500    o includes r* 2nd term in potential gradient.
2501    
2502    checkpoint48f_post
2503    Merging from release1_p12:
2504    o Modifications for using pkg/exf with pkg/seaice
2505      - improved description of the various forcing configurations
2506      - added basic radiation bulk formulae to pkg/exf
2507      - units/sign fix for evap computation in exf_getffields.F
2508      - updated verification/global_with_exf/results/output.txt
2509    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2510      (SBO) core products, including oceanic mass, center-of-mass,
2511      angular, and bottom pressure (see pkg/sbo/README.sbo).
2512    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2513      to avoid negative values in shallow regions.
2514      - updated verification/natl_box/results/output.txt
2515      - updated verification/lab_sea/results/output.txt
2516    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2517    o Added useSingleCpuIO option (see PARAMS.h).
2518    o Updated useSingleCpuIO option in mdsio_writefield.F to
2519      work with multi-field files, e.g., for single-file pickup.
2520    o pkg/seaice:
2521      - bug fix in growth.F: QNET for no shortwave case
2522      - added HeffFile for specifying initial sea-ice thickness
2523      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2524    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2525      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2526    o pkg/seaice:
2527      - adjoint-friendly modifications
2528      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2529    
2530    checkpoint48e_post
2531    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2532    o dynamics: change definition of computational domain & adapt mom_fluxform
2533      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2534    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2535        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2536        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2537        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2538        inverted_barometer solid-body.cs-32x32x1
2539      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2540    
2541    checkpoint48d_post
2542    o in preparation for r*:
2543     a) use pre-computed gradient of hydrostatic potential:
2544        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2545     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2546        => affects results of glob_oce_pressure (different truncation error)  
2547      update output.txt of ideal_2D_oce & global_ocean_pressure
2548    
2549    checkpoint48d_pre
2550    o in preparation for r*:
2551      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2552      pass the 2 comp. of the grad. as arguments to momentum S/R.
2553      but for the moment, only used if it does not change the results.
2554    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2555    
2556    checkpoint48c_post
2557    Modifications in treatment of initial flux forcing controls
2558    to avoid extra storing of flux fields.
2559    
2560    checkpoint48c_pre
2561    o Added tidal_basin_2d experiment (currently 1D!)
2562    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2563    
2564    checkpoint48b_post
2565    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2566     (modification to pressure gradient not yet implemented)
2567    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2568      (for U & V) that are used for vertical advection of momentum.
2569    
2570    checkpoint48a_post
2571    o In preparation for r*, use temp. array to compute vertical transport
2572       in flux-form momentum pkg. => change results of few test-exp.
2573      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2574                        lab_sea, natl_box & plume_on_slope
2575    
2576    checkpoint48
2577    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2578    
2579    checkpoint47j_post
2580    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2581    o moved adexch from forward_step to addummy_in_stepping
2582    o added exch in ctrl_map_...
2583    o aveFreq.=0. at end of cost_final to avoid overwrite in
2584      reverse checkpointing loop
2585    o Yet more changes in gmredi:
2586      * adgmredi_calc_tensor
2587        avoiding all recomputation of gmredi_slope_limit
2588      * adgmredi_x/y/rtransport
2589        added flag for excessive storing to avoid recomp. of
2590        u/v/rtans, dTdx/y/z
2591        -> this is not really necessary and very memory-consuming
2592      * adgmredi_slope_psi:
2593        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2594      * gmredi_slope_limit
2595        re-activated full calculation of taperfct for case 'ac02'
2596    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2597    
2598    checkpoint47i_post
2599    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2600    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2601      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2602    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2603    o gmredi: fix few bugs.
2604    
2605    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2606    This will be a good checkpoint to plug into the ecco-branch.
2607    o few modif.'s to get latest version adjointed
2608      (mainly kick out code in ini_linear_phisurf)
2609    o modif's to run adjoint with exactConserv
2610    o case GM_BOLUS_ADVEC should be cleaned
2611      S/R gmredi_slope_psi should be cleaned
2612    o verification/carbon now has exactConserv=.TRUE.
2613    
2614    checkpoint47g_post
2615    o time-average AIM output: becomes independent from statvars time-average
2616      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2617    o After TAF bug fix:
2618      Tested adjoint of gmredi package.
2619      Tests were done with checkpoint47 rather than with latest
2620      checkpoint47f_post since the latter is broken for the adjoint
2621      verification/carbon/ contains both ADM and TLM gradient checks.
2622    Here they are, before they get changed/lost/stolen.
2623    Mostly modif.'s to fix numerical sensitivities.
2624    Gradient checks OK for
2625    - GM_taper_scheme:
2626      * clipping
2627      * ac02
2628      * linear
2629      * glw91
2630      * dm95
2631      * ldd97
2632    - GMREDI_OPTIONS:
2633      * GM_VISBECK_VARIABLE_K
2634      * GM_NON_UNITY_DIAGONAL
2635      * GM_EXTRA_DIAGONAL
2636      * GM_BOLUS_ADVEC
2637    in conjunction with data.gmredi parameters to be checked in
2638    in a few minutes under verification/carbon/code/
2639    
2640    checkpoint47f_post
2641    Merging from release1_p10:
2642    o modifications for using pkg/exf with pkg/seaice
2643      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2644        and SEAICE_EXTERNAL_FLUXES
2645      - pkg/exf CPP options EXF_READ_EVAP and
2646        EXF_NO_BULK_COMPUTATIONS
2647      - usage examples are Experiments 8 and 9 in
2648        verification/lab_sea/README
2649      - verification/lab_sea default experiment now uses
2650        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2651    
2652    checkpoint47e_post
2653    o created a tag prior to creating a branch
2654    
2655    checkpoint47d_post
2656    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2657      at the bottom boundary had an erroneous half slip boundary condition
2658    o added bottom drag and no slip boundary condition capabilities to
2659      oceanic pressure coordinates code
2660    o added new verification experiment global_ocean_pressure, this experiment is
2661      also described in the tutorial section of the manual
2662    checkpoint47d_pre
2663    
2664    checkpoint47c_post
2665    o Added a verification experiment for a global cubed-sphere ocean run
2666      -  verification/global_ocean.cubed32x32x30
2667      -  uses pkg/therm_seaice and pkg/bulk_forcing
2668    
2669    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2670    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2671      when using P-coordinate; only implemented for atmospheric config.
2672    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2673      NOTES: requires option NONLIN_FRSURF to be "#define".
2674    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2675    
2676    checkpoint47b_post
2677    Merging from release1_p9:
2678    o pkg/seaice
2679      - removed GOTO's and added taf directives
2680      - double precision constants to reduce the g77 (Linux)
2681        to F77 (SGI) differences reported in release1_p8
2682    o tools/genmake
2683      - added SGI options
2684    o verification/testscript
2685      - updated to that of checkpoint47a_post
2686    o verification/global_ocean.90x40x15/input/eedata
2687      - modified for SGI f77 compatibility
2688    o verification/lab_sea
2689      - added description of sea-ice model
2690      - added missing matlab routines
2691      - added test of thermodynamics parallelization
2692    
2693    checkpoint47a_post
2694    o new pkg: aim_v23
2695     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2696       for now, keep the same surface forcing as before.
2697     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2698     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2699     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2700    o add diagnostic of surface correction term in monitor output
2701    
2702    o bulk_force and therm_seaice
2703    - Two packages:  bulk_force (Bulk forcing)
2704      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2705    - Earlier integration from Stephaine Dutkiewicz
2706      and Patrick Heimbach.
2707    - Two ifdef statements for compile time,
2708       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2709    
2710    checkpoint47
2711    differentiable version of checkpoint46n_post
2712    o bug fix in quasihydrostaticterms
2713    o * "clean" adjoint code (in terms of extensive recomputations)
2714        can now be obtained for all GMREDI options (i.e. for
2715        - GM_VISBECK_VARIABLE_K
2716        - GM_NON_UNITY_DIAGONAL
2717        - GM_EXTRA_DIAGONAL
2718        - GM_BOLUS_ADVEC )
2719      * However, wrong gradient check problem remains unsolved.
2720      * New CPP options have been introduced for different
2721        tapering schemes
2722    o external_fields_load now part of differentiation list
2723    o pressure needs multiple storing;
2724      would be nice to have store_pressure at beginning or
2725      end of forward_step, e.g. by having phiHyd global (5-dim.)
2726      (NB: pressure is needed for certain cases in find_rho,
2727      which is also invoked through convective_adjustment).
2728    o recomputations in find_rho for cases
2729     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2730    o #define ATMOSPHERIC_LOADING should be differentiable
2731    o ini_forcing shifted to begining of initialise_varia
2732    o Incorporating QNVS line search routines into MITgcm
2733      (this is separate code, and therefore not under pkg)
2734      lsopt/, optim/
2735    o Updated verification/carbon/
2736      - #define GM_VISBECK_VARIABLE_K
2737      - GM_taper_scheme    = 'ldd97'    
2738    
2739    checkpoint46n_post
2740    Merging from release1_p8:
2741    o verification/natl_box:
2742      updating new external_fields_load routine
2743    o New package: pkg/seaice
2744      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2745      The sea-ice code is based on Hibler (1979-1980).
2746      Two sea-ice dynamic solvers, ADI and LSR, are included.
2747      In addition to computing prognostic sea-ice variables and diagnosing
2748      the forcing/external data fields that drive the ocean model,
2749      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2750      The implied surface heat flux is then stored in variable
2751      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2752      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2753      non-local transport term.  Because this call precedes model
2754      thermodynamics, temperature under sea-ice may not be "exactly" at
2755      the freezing point by the time theta is dumped or time-averaged.
2756      N.B.: fairly large differences in accuracy occur across
2757            different platforms/compilers; comparison between
2758            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2759            generated output gives:
2760       T           S           U           V
2761      C D M    c        m  s        m  s        m  s        m  s
2762      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2763      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2764      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2765    
2766      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2767    o GAD:
2768      - generated new common blocks to account for call of
2769        same gad routines with differing traceridentities
2770        (needed to modify tracerIdentity indices in GAD.h)
2771      - generated separate common blocks for case useCubedSphereExchange
2772        (Department of Futurology)
2773      - parameter lists to gmredi_?transport: added tracerIdentity
2774      - added new key indices to tamc.h
2775    o external_fields_load:
2776      - added this routine to TAF list
2777      - needed to make some common blocks global and additional storing
2778        along the same lines as exf package (checkpoint_lev?_directives.h)
2779    o exf:
2780      updated external forcing package
2781      - bug fixes carried over from ecco-branch
2782        (missing OBCS_OPTIONS.h in two routines)
2783      - enable easy to use "no forcing".
2784      - added exf I/O for atmospheric loading
2785      - added exf I/O for runoff data
2786      - transfered scaling between exf <-> MITgcm to exf namelist
2787    o Adding new verification experiment global_with_exf.
2788      This verification experiment is almost identical to the
2789      global_ocean.90x40x15 experiment, except that it uses
2790      the exf (and cal) package instead of the
2791      external_fields_load routine (cf README file).
2792    
2793    checkpoint46m_post
2794    o modified testscript to return -- when there are no lines of "%MON" output
2795    o added new flag "quasiHydrostatic" for QH mode
2796      and new routine quasihydrostaticterms()
2797    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2798      New routine: mom_u_coriolis_nh()
2799    o fixed sign of non-hydrostatic metric terms in u and v equations.
2800      Depend on correct sign of gravitySign.
2801    o added work.pc* to .cvsignore in aim directories using ifc
2802    o introduced flag for controllin non-hydrostatic metric terms
2803  o removed gravitySign from PARM04  o removed gravitySign from PARM04
2804  o switched to g77/ifc from pgf77 in aim experiments  o switched to g77/ifc from pgf77 in aim experiments
2805    

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