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revision 1.32 by adcroft, Thu Nov 30 16:51:40 2000 UTC revision 1.823 by mlosch, Fri May 25 14:52:27 2007 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/seaice:
8      - allow values of SEAICE_elaticParm > 1
9      - make lsr boundary conditions free slip (by default)
10      - add code for no slip boundary conditions for lsr
11      - set minimum of zeta to zero (and not 4e8) (changes results)
12    o change calculation of Visbeck K:
13      - no longer depend on tapering scheme; instead, compute slope (limited
14        by GM_maxSlope). this is equivalent to what was comuted before with
15        clipping or linear tappering.
16      - fix vertical averaging (wrong by 1 level)
17      - leave the old version (but will not be maintained) within
18        #ifdef OLD_VISBECK_CALC / #endif
19    o change error catch in calc_r_star to improve vectorization
20    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
21      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
22    
23    checkpoint59b
24    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
25      - export/import (between ocean & coupler) fields needed for ocean DIC.
26    o pkg/seaice:
27      - get rid of three more exchanges seaice_calc_viscosities (required
28        different loop boundaries in seaice_lsr and seaice_ocean_stress)
29      - bug fix in seaice_ocean_stress (update of lab_sea required)
30      - reduce loop boundaries to necessary minimum also in seaice_evp
31      - go back to the old way of computing deltaC/Z as the adjoint likes that
32        better
33    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
34      passive tracer to an Age Tracer) + update output.txt
35    o pkg/exf:
36      - implement A-grid / C-grid selection for wind-stress input files.
37      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
38      for now, in exf_bulk_largeyeager04.F only :
39      - change implementation for case where windspeed + 2. components wind-stress
40        are read-in. AND use rhoConstFresh to convert evap.
41    o pkg/seaice:
42      - use correct EXCH_UV for wind-forcing (on A-grid).
43      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
44        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
45    o pkg/exf:
46      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
47      EXF_INTERPOLATION:
48      - merge global_with_exf/code version of exf_interp_read.F
49        to the main code ;
50      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
51        reading the file ; Important: This options needs to be defined to recover
52        previous code.
53        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
54      - no longer loose real*8 precision along the way when using exf_iprec=64.
55    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
56      - change discretisation of evp-solver in order to avoid another exchange
57        (changes lab_sea) and clean up a little
58      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
59        help the adjoint (this also changes the results slightly)
60      - add a few "_d 0" where they had been missing in seaice_evp.F
61      - cleaning up: remove unused seaice_calc_rhs.F
62    o pkg/exf: some cleaning-up:
63      - change various "constants" into runtime parameters
64      - cleaned-up Large&Yeager04 routine which should eventually
65        replace exf_bulkformulae.F (changed names of S/R and CPP)
66        and merged various ALLOW_ATM_WIND options
67     only used with thsice pkg (in thsice_get_exf.F):
68      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
69        which are used when useStabilityFct_overIce=TRUE (= the default)
70      - change default values of ice & snow emissivity and scale downward LW
71        by ice & snow emissivity.
72    o pkg/thsice:
73     fix few little problems, in thsice_calc_thickn.F:
74      - growth vertically (and not laterally) if iceFrac == iceMaskMax
75      - melt laterally only if hIce < hThinIce (as the comments say)
76      and in thsice_extend.F:
77      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
78      - start to form ice as soon as the minimum ice-volume is reachable.
79     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
80      and cpl_aim+ocn
81    o pkg/kpp
82     - move computation of surface related input fields to KPP into a new
83       subroutine kpp_forcing_surf.F
84     - remove wrong (within bi,bj loops) EXCH calls.
85     - little cleaning (add argument myThid in last position, cvs header ...)
86     - for now, fix conservation problem by exchanging KPPviscAz (may not
87       be the best fix)
88    o pkg/seaice
89     - check for inconsistent evp parameter/cpp-flag combination
90     - remove leftover errIO flat for obsolete name list error handling
91    o OpenAD
92     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
93    
94    checkpoint59a
95    o pkg/seaice: some parameter clarifications and a little bit of clean up
96    o pkg/thsice: rename run-time parameters:
97       himin       -> hIceMin
98       himin0      -> hThinIce
99       hihig       -> hThickIce
100       i0          -> i0swFrac
101       transCoef   -> bMeltCoef
102       frac_energy -> fracMelting
103      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
104       with default values (for now) that do not change the results.
105      remove old version of thsice vars advection in pkg/seaice.
106    o in FFIELDS.h:
107      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
108      - make pLoad & sIceLoad always available (but still only used if
109         ATMOSPHERIC_LOADING is #define).
110    o pkg/kpp: replaced _KPP_RL with _RL
111    o bug fixes for vertical diffusivity computations when both KPP and
112        3D diffusivity arrays are used.
113    o pkg/seaice: fix bug in evp solver, while doing that
114      - change (improve?) discretization of stress computations for both
115        cgrid-lsr and evp solver
116      - add a new routine to compute strain rates
117      - the above changes lab_sea results
118      - add no slip conditions for evp solver (off by default), lsr-version
119        may follow
120      - fix exchange for shear at Z-points (does not change lab_sea)
121      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
122        (to force the user to pick a time step since there is not "safe" way
123        of choosing it)
124      - add principal stress diagnostics
125      - rearrange fields for evp a little to avoid having to call a: too many
126        exchanges and b: exchanges for stress trensor components which we do
127        not have.
128      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
129        of evp, complete rewrite for lsr case (latter is does not yet work
130        in all cases)
131    o pkg/kpp: add code to have mixing in shelf ice caverns
132      - add myThid to all kpp routines (long overdue)
133    
134    checkpoint59
135    o pkg/exf:
136      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
137        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
138      - move exf header files from lower_case.h to UPPER_CASE.h ;
139        add missing cvs Header & Name
140      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
141      - add namelist param. selectStressGridPosition, exf_monFreq
142      - retire many _CLIM routines, and remove data.exf_clim
143        + params moved to data.exf
144        + climsst, climsss now handled by exf_set_gen, i.e.
145          climss?period=0 refers to constant field,
146          climss?period=-12 to monthly forcing
147      - split up namelists in data.exf
148    o pkg/seaice:
149      - remove seaice_exch and seaice_exch_uv
150      - remove superfluous exchange of theta
151      - add myThid to seaice_budget_ocean/ice
152      - add new interface for atmospheric wind forcing (C-grid only)
153        + new routine
154        + two new field (taux, tauy for stress over ice)
155        + removed one global field (DAIRN) for C-grid case only
156    o pkg/thsise
157      - 2nd set of modifs for thsice adjoint in conjunction with exf
158    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
159    
160    checkpoint58y_post
161    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
162      vertical diffusivity, similar to that in MOM4; turned on using
163      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
164      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
165    o Added capability for 3D specification of background vertical diffusion
166      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
167      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
168      "data" file that contains the 3D vertical diffusivity coefficients.
169    o ice dynamics (pkg/seaice) with thsice thermodynamics:
170      - add code within pkg thsice to advect & diffuse sea-ice fields
171      similar to (and will replace) what has been added in  seaice_advdiff.F,
172      but: - conserving Mass, Heat & Salt.
173           - better when using non-linear advection scheme (not yet fully tested)
174           - can also be used in atmospheric set-up (for now, only the diffusion).
175    
176    checkpoint58x_post
177    o IO option for global-file compact format:
178      - add options when generating topology (utils/exch2/matlab-topology-generator)
179      - add I/O capability (pkg/mdsio).
180      - adapt utils/matlab/rdmds.m to read this format.
181      for now long-line format not yet supported by pkg/mdsio (& exch2).
182    o shelfice: add a few diagnostics
183    
184    checkpoint58w_post
185    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
186      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
187      (and replace horiVertRatio in NH code).
188      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
189                         and tutorial_plume_on_slope (sensitive to truncation)
190    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
191      directly to drive seaice model (C-grid only)
192    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
193     - reintroduce computation of wind from stress,
194     - compute tau (in exf_bulkformulae.F) from windstress averaged to
195       mass points to avoid tau = 0
196     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
197    o rdmnc.m: make it work with "global" files created with gluemnc
198    o rdmnc.m : some improvements in dealing with singleton dimension
199      (tested on all testreport mnc output files).
200    o genmake2: disable pkg/profiles if netcdf test fails.
201    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
202    o move call to cal_readparms up to make calendar parameters/variable available
203      to all packages
204    
205    checkpoint58v_post
206    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
207      useDynP_inEos_Zc tested.
208    o pkg/exf: changes to properly interpolate/mask/scale initial fields
209    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
210      and portions thereof.  See read_cs.txt for description and examples.
211    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
212      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
213      following the great-circle arc between those 2 points.
214    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
215      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
216    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
217     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
218     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
219     - still needs work (not working with some options ; efficiency to improve)
220       and serious testing.
221     - use this scheme for temperature & salinity in 2 advection test exp.:
222       advect_xy & advect_xz, respectively.
223    
224    checkpoint58u_post
225    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
226    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
227    o testreport: add option "-skipdir" to skip some test.
228    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
229      momentum calculation.
230    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
231    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
232      remove checkpoint.F and the_correction_step.F (no longer used);
233      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
234    o add option (linFSConserveTr) to correct for tracer source/sink due to
235      Linear Free surface
236    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
237    o pkg/thsice: fix reading mnc-pickups
238    
239    checkpoint58t_post
240    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
241    o pkg/mdsio:
242     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
243       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
244       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
245     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
246     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
247       either MDS_READ_FIELD or MDS_WRITE_FIELD )
248     - new S/R (to replace MDSWRITEMETA), which allows to write more
249       informations (variable names, time ...) to meta files.
250     - modify rdmds.m to give back the meta file content.
251    o pkg/diagnostics: change vertical interpolation to be safer, and more
252       flexible (define p-levels to interpolate to in data.diagnostics);
253      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
254       diagnostic pointer.
255    o pkg/seaice: more cleaning up of seaice_growth, added many comments
256    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
257    o fix multi-category seaice:
258     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
259       SEAICE_MULTICATEGORY
260     - fix short wave heat flux
261    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
262       and allow to use EVP solver. Change forward lab_sea: test both EVP
263       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
264    o Initial check-in of lab_sea adjoint
265      (very similar to natl_box_adjoint/code_seaice)
266      * used C-grid and EVP solver
267      * used KPP, GM/Redi
268      * uses inAdExact=.TRUE.
269      * gradient checks fail for both ADM and TLM
270        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
271        f.d. gradients actually seem more problematic than ADM, TLM gradients;
272        issue is related to forward mismatch between g77 an ifort
273    o pkg/seaice: overhaul of thermodynamics
274     - growth.F and groatb.F are replaced by new routine seaice_growth.F
275     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
276     - move a few global fields out of SEAICE.h into seaice_growth.F and
277       make them 2D (FICE/QNETO/ ...)
278     - remove FO (it is the same as QNETO)
279     - introduce a few local fields to avoid modifying external fields such
280       as atemp, etc.
281    
282    checkpoint58s_post
283    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
284      changed exf_set_gen.F so that
285        genperiod=0 means input file is one time-constant field and
286        genperiod=-12 means input file contains 12 monthly means
287    o CG2D: use pre-computed solver main-diagonal (stored in common block);
288      this affects truncation error ; generate new output file for exp. which
289      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
290        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
291        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
292        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
293        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
294        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
295    o start implementation of deep-atmosphere and anelastic formulation
296    o verification: remove 2nd copy of input files and use script "prepare_run"
297      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
298    o mom_common/vecinv/fluxform: fix a few initialisation isssues
299    o profiles: fix for multithreaded case
300    
301    o diagnostics: rename few diags:
302      s/'PRESSURE'/'RCENTER '/g
303      s/'TICE    '/'oceFreez'/g
304      s/'TAUX    '/'oceTAUX '/g
305      s/'TAUY    '/'oceTAUY '/g
306      s/'SWFLUX  '/'oceQsw  '/g
307      s/DIFx/DFxE/g
308      s/DIFy/DFyE/g
309      and add few ocean-forcing diagnostics:
310      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
311    o modifications to pkg/seaice/growth.F and budget.F, which change results of
312      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
313      as actual snow thickness.  It now refers everywhere to effective snow
314      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
315    
316    checkpoint58r_post
317    o modifications to pkg/seaice/growth.F, which change results of
318      lab_sea experiment: fixes pertain to melting snow over open water, to
319      masking EVAP under sea ice, and to using the correct AREA variable for
320      computations of EVAP, PRECIP, HSNOW, and GHEFF
321    o add ability to read bathy, salt, and theta using MNC (off by def)
322    o add flooding algorithm and advection of HSNOW for pkg/seaice;
323      both are turned off by default and do no change any results
324    o seaice advection with pkg/thsice: a step toward the use of non-linear
325      advection scheme, but #ifdef or commented out for now (requires more EXCH).
326    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
327      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
328      in natl_box (affects results @ truncation level: update output.txt)
329    o multi-threading and IO:
330      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
331      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
332        (needed to work with SingleCpuIO): tested in all verif. exp.
333    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
334      affects the results (but none of the verification test uses this scheme).
335    o Adding some pkg/diagnostics capability to pkg/seaice
336      (will certainly be subject to changes)
337    o ctrl: adding new control variables:
338      lwflux, lwdown, evap, snowprecip, apressure, runoff
339    
340    checkpoint58q_post
341    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
342      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
343      high_res_cube configuration by 4% on Columbia.
344    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
345      add (in global_with_exf/code) a version of EXF_INTERP_READ without
346      dynamical allocation (seems to work in multi-threaded).
347    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
348      single CPU io) so that TAF does not have to see EESUPPORT.h
349    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
350    
351    checkpoint58p_post
352    o obcs: stop if obcs is used with useCDscheme = .true.
353    o shelfice:
354     - fix a sign error so that no slip at shelfice interface works
355     - remove stop for combination non-hydrostatic code and shelfice. That does
356       not mean, that the results are correct, but at least they are numerically
357       stable
358    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
359    o added adjoint exch routined for all exch*3d* routines
360      and updated flow directives
361    
362    checkpoint58o_post
363    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
364      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
365    o change controling S/R for writing pickup file (new S/R do_write_pickup)
366      and clean-up reading/writing of pickup files.
367    o fix local version of read/write pickup (NH part) in rotating_tank/code
368    o simplify EXCH interface:
369     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
370     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
371    o added the regrid package
372    o shelfice:
373     - add a simple boundary layer scheme to reduce noise
374     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
375    
376    checkpoint58n_post
377    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
378       local variable (not in common block).
379    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
380      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
381      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
382        to work with SingleCpuIO.
383    o add "_d 0" to real constant of pkg/cfc subroutines ;
384       update exp. cfc_exemple & tutorial_cfc_offline output files.
385    o multi-threading and IO:
386      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
387        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
388      - barrier before and after reading.
389      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
390      - avoid using MDS_WRITELOCAL for LAND pkg output.
391      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
392        common-block variables ; Allows multi-threading with master-thread IO.
393    o change default MAX_NO_THREADS from 32 to 4 ;
394      and stop cleanly when MAX_NO_THREADS is too small.
395    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
396    
397    checkpoint58m_post
398    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
399       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
400    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
401       keep global_ocean.90x40x15 (for AD testing) with former secondary test
402       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
403    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
404        add MITgcm_tutorials (= code + all the tutorials)
405    o ecco, option to compute cost for total ssh (mean+anom)
406    o consistent with addition of ptracer and ssh in pkg/profiles
407    o profiles: adding ptracer and ssh
408    o testreport: change multi-test output-file name
409      (from output.txt.{name} to output.{name}.txt)
410    o profiles: now ok for mutli-tiles case
411    o seaice: add 4 parameters for different advection schemes for area,
412      (effective) seaice thickness, enthalphy, and snow height. Their default
413      is the standard parameter SEAICEadvScheme
414    o calc_gw:
415     - add cosFacU in zonal viscous flux (harmonic.visc.).
416     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
417       of tutorial_plume_on_slope.
418    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
419    o calc_gw: true flux-form, account for horizontal grid spacing.
420      update rotating_tank results, but not plume_on_slope (affected at
421      truncation level, 11 digits).
422    
423    checkpoint58l_post
424    o calc_gw:
425     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
426     - remove side-drag for now (need to fix it); update plume_on_slope results.
427     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
428    o commit code to make SST/SSS weights spatially variable
429      (based on either variable in-situ or variable initial T/S weights)
430    o pkg/ecco:
431      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
432        now based on horizontally varying weights wthetaLev, wsaltLev
433      * cost_averagesflags now returns year indices in addition to day, month
434      * sflux balance is performed on annual basis
435        (sflxumm, sfluxmm2, bal_sfluxmm)
436      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
437        including separate counting and multipliers
438    o pkg/rbcs
439      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
440    
441    checkpoint58k_post
442    o testreport:
443     - always build in dir. "build" (if not there, mkdir build instead of building
444       & running in input)
445     - run in dir run (if it exists), in build otherwise.
446     - call prepare_run (if input/prepare_run exists)
447     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
448    o pkg/exf modifications to interpolation and rotation routines for more
449       reasonable treatment of North Pole singularity: for tracers North Pole
450       value is set to northernmost zonal-mean value, for zonal velocity it is
451       set to zero, and for meridional velocity it is set to northernmost value.
452    o pkg/exf/exf_check_range.F
453     - add tile index to diagnostics and move stop statement to the very
454       end of the routine.
455    o pkg/diagnostics: (diagnostics_main_init.F)
456      define title of isomorphic variables according to the current config.
457    o pkg/thsice with pkg/seaice dynamics:
458    - fix domain of computation (interior only, required for exf) and do exchanges
459    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
460    o towards a standard way of dealing with multi-threading in MONITOR
461      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
462    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
463       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
464    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
465    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
466    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
467       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
468    o tracer advection:
469     - clean-up and simplify calc_common_factors.F
470     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
471       advection subroutine (but still not used within DST advection S/R)
472    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
473    
474    checkpoint58j_post
475    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
476      from file (collects calls previously in FORWARD_STEP)
477    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
478    o adjoint store dir. adjusted accordingly
479    o genmake2
480      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
481    
482    checkpoint58i_post
483    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
484      on wind stress (SEAICEstressFactor defaults to 1.)
485    o Total number of Timers is finite (<=40): comment out 2 non-essential one
486      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
487    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
488      on CS-grid: no longer loosing mass.
489    o exf & curvilinear-grid: no longer modify longitude xC & xG.
490    o pkg/ggl90: fix sloppy output and fix a bug
491    o pkg/seaice: added SEAICEuseEVPpickup parameter
492      - Set to false in order to start EVP solver with
493        non-EVP pickup files when using SEAICEuseEVP
494      - fix sign error in diffusion in seaice_calc_rhs
495    
496    checkpoint58h_post
497    * Modifications for bottom topography control
498      o replace hFacC by _hFacC at various places
499      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
500      o add non-self-adjoint cg2d_nsa
501      o update autodiff support routines
502      o re-initialise hfac after ctrl_depth_ini
503      o works for 5x5 box, doesnt work for global_ocean.90x40x15
504    * Adding verification for 5x5 box (4-layer) bottom topography control
505    
506    checkpoint58g_post
507    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
508       used for mean seasonal cycle, mean diurnal cycle); add an example
509       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
510    o pkg/ggl90:
511      - add parameter (minimum surface kinetic energy)
512      - fix bug (avoiding division by zero)
513    o couple pkg/thsice to pkg/seaice:
514      - modify advection in seaice to accomodate new scalar fields to be advected
515      - only muliDimAdection scheme work with seaice/thsice
516      - mapping of thsice-variables to seaice-variables, back and forth
517      - does not break the verification experiments, but does not give the
518        desired results either
519    o pkg/seaice
520      - make (default) second order advection a bit less confusing?
521    
522    checkpoint58f_post
523    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
524      to pkg/seaice):
525      - new routines thsice_map_exf and thsice_get_exf provide the interface
526      - add an additional formal parameter to thsice_solve4temp
527    o pkg/exf:
528      - add new fields wspeed, snowprecip (to be able to couple to thsice)
529      - correct Stefan-Boltzmann constant
530      - new parameter for longwave surface emittance
531      - separate some stuff from exf_bulkformulae into new routines  
532        exf_radiation, exf_wind
533      - add new parameters and constants: longwave emissivity for ocean, ice
534        and snow, evaporation parameters over ice
535      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
536        either wind from stress or stress from wind
537    o pkg/thSIce:
538    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
539    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
540       and THSICE_CALC_THICKN
541    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
542    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
543      to make debugging easier.
544    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
545    o pkg/bulk_force:
546      - clean-up comments and parameters ;
547      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
548    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
549      generate new output for test-experiment: aim.5l_cs.thSI
550    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
551      testreport accordingly
552    
553    checkpoint58e_post
554    o SEAICE_CGRID adjoint done
555    o R_STAR adjoint implemented.
556      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
557      * need to sort out init. of h0facc, etc.
558    o Make pkg/profile fully independent of ecco,cost, etc. stuff
559      to be able to use it in pure forward.
560    
561    checkpoint58d_post
562    o upgrade simple test-experiment to tutorial example:
563     step.1: duplicate the experiment and (step.2) will remove the old copy.
564      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
565      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
566      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
567      tutorial_global_oce_biogeo    <- copy of dic_example
568      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
569      tutorial_plume_on_slope       <- copy of plume_on_slope
570      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
571      tutorial_global_oce_optim     <- empty for now (David ?)
572      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
573     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
574    o correct a sign problem in cost_scat.F
575    o obcs and ptracers: fix boundary conditions for advections schemes
576      with larger stencil
577    o thsice adjoint: start
578    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
579      completeness
580    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
581      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
582    o ptracers adjoint:
583      * avoid extensive recomputatations
584      * fix missing re-init. of gptr (missed by TAF)
585    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
586      me to turn off the excessive output to STDOUT that this package produces
587    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
588      and add those terms in Vector-Invariant formulation.
589    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
590      if the control period (xx_hfluxperiod etc) is 0
591    o in profiles pkg, clean routines and fix details
592    o in ecco pkg, reading ssh data:
593      fix problem in case the model does not start at iter0=0
594    o fix mnc-pickup/restart for ptracers
595    o new package prifiles:
596      code to compute profile-based cost by Gael Forget
597      (modifs in ecco, ctrl, autodiff)
598    o Benign bug fix in initialization (spotted by M. Mazloff) of
599      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
600    
601    checkpoint58c_post
602    o adjoint: finish NLFS adjoint and provide reference output in
603      verification/global_ocean.90x40x15/results_ad_nlfs
604    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
605      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
606      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
607      with SEAICE_CGRID defined.
608    o move calendarDumps from "data" to "data.cal" and clean-up the code
609      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
610    o add useEXF & useCAL flags (for now, set in hard-coded way)
611    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
612      (were missing in NH mode, and wrong in quasihydrostatic mode).
613      waiting for Chris updated version of calc_gw to add those CALLs.
614    o fix bug in quasihydrostatic S/R ;
615      add a test for this option: global_ocean.90x40x15.qshyd
616    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
617      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
618    o add on/off flag useOffLine for package OFFLINE
619    o seaice:
620      - modify advection so that it works also on the C-grid
621      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
622        problem in multi-tile runs with C-grid
623      - add flags for clipping ice velocities and/or masking solver forcing
624      - fix drag (ocean on ice) formulation and a bug that caused noise in the
625        C-grid solver
626      - added a few comments to seaice_diffusion.F
627      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
628        are now exclusive)
629      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
630        required re-ordering the code a little:
631       + make DAIRN global variable (defined in SEAICE)
632       + move computation of the viscosities eta and zeta into a new separate
633         routine (because I need to recompute them in seaice_ocean_stress.F)
634    
635    checkpoint58b_post
636    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
637      update output.txt of exp. aim.5l_cs.thSI
638    o various mnc cleanups and improvements:
639      + shrink lookup tables by factor of ~4
640      + better error reporting when running out of lookup space
641      + able to handle longer path/file names (up to 500 chars)
642    o adjoint:
643      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
644      - TBD: "hidden" mom_vecinv recomp. in dynamics
645    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
646     (allow to differentiate between forcing components using new integer flags:
647      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
648     and add new flag to put Dissipation tendency out of Adams-Bashforth.
649    o ecco
650      - enable trend removal from SSH anomaly obs.
651    o adjoint
652      - a fix for PmEpR when #undef EXACT_CONSERV
653      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
654      - try to fix "hidden" recomp. in forward_step for NLFS
655        (NLFS seems broken sometimes after I checked it in)
656    o seaice:
657     - add c-grid version of the dynamic solver:
658       + three new routines that are the c-grid substitute lsr, dynsolver
659         and ostres
660       + put a few fields that were local to dynsolver into global common
661         blocks, so that I can move the computation of stresses etc into
662         seaice_lsr (saves coding but may break the adjoint).
663     - replace more hardwired parameters by runtime parameters
664     - add ice masks that mask the rhs of the implicit solvers where there
665       is no ice (commented out in seaice_dynsolver, because i am not sure
666       if this works properly), eventually this should replace the clipping
667       of ice velocities in seaice_dynsolver to +/-40cm/s.
668    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
669      include it only where its needed
670    o move balancing of fluxes before the call of external_forcing_surf
671    o seaice:
672      - correct units of turning angles (now they are really in degrees)
673      - move computation of GWATX/Y out of main routine into dynsolver
674      - initialize GWATX/Y in seaice_init
675    o Apply mask on Fresh-Water flux (needed for SSH forcing).
676      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
677    o seaice: add runtime flags for turning angles (default to zero)
678    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
679      and trend from exf forcing and ctrl control adjustments
680    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
681      (since checkpoint57x_post)
682    o change the default rotation period to 86164.s = the Earth rotation
683    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
684      and based on a reference stratification. Tested within hs94.cs-32x32x5.
685    o seaice advection: add code for choosing between the default (2nd order
686      central differences) and multiDim advection schemes provided by
687      pkg/generic_advdiff
688    o seaice:
689      - removed all references to SEAICE_GRID.h fields from
690        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
691        (cubed-sphere configuration will change a little)
692      - grid computations in seaice_init are obsolete now.
693      - cleaned up code a little so that is easier to read (hopefully).
694      - added new (better?) discretizations of default advection and diffusion
695        (turn on with SEAICEuseFluxForm)
696      - replace 1 in 3d global fields by kSurface in growth.F
697      
698    checkpoint58a_post
699    o seaice:
700      - bug fix in advect.F
701    o shelfice:
702      - separate shelfice load anomaly from pload (breaks with time
703        dependent forcing), => introduce constant field shelficeLoadAnomaly.
704        Its default is 0., but it may be computed more cleverly from (unknown)
705        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
706        done offline. A good approximation of the pressure load anomaly is
707        necessary to avoid large initial adjustment processes underneath
708        deep-reaching shelfice.
709      - small fix in ISOMIP shelfice_thermodynamics
710      - add more sophisticated thermodynamics of Hellmer (1989), this is
711        now the default
712      - give a few constants more intuitive names
713    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
714      if bulk formulae are used in long integration (especially EmPmR). Turn
715      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
716      if balancePrintMean, the imbalance that is substracted is printed to
717      STDOUT.
718    o fix bug (typo) in obcs_apply_eta.F
719    o add a new package shelfice which enables us to model the circulation
720      underneath shelf-ice with draughts of hundreds of meters.
721     - works
722     - to do: + include improved thermodynamics
723              + check whether kSurfC (from model/inc/SURFACE.h) can be used
724                instead of new field kTopC
725              + can we use topoFile, Ro_surf and existing code in ini_depth.F
726                instead of new field R_shelfIce and new code in ini_depth.F
727                and ini_mask_etc.F?
728              + adjust vertical mixing schemes?
729    o seaice pkg:
730     - add a cpp-flag to include a simple formula for a salinity dependent
731       freezing point of sea water at the surface
732     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
733       meridional stresses are now different (and hopefully correct)
734    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
735       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
736       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
737    o pkg/diagnostics: add options and parameters for regional-statistics
738       diagnostics ; define regions by reading a region-mask from a file
739       (might add other options later)
740    o pkg/bulk_force:
741     - add option and parameters to use AIM surface-flux formulae.
742     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
743       others forcing fields (defined in PARM05, parameter file "data") are loaded
744       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
745     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
746     - use the right EXCH call for uwind,vwind (to work on CS-grid).
747     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
748       and parameters (note: calcWindStress replaces .NOT.readwindstress).
749     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
750    
751    checkpoint58
752    o add "--embed-source" option to genmake2 which, when the supporting
753      tools can be compiled (as determined by genmake2) will turn on the
754      embed_files package which then embeds the entire MITgcm source code
755      (*.[fFhc] + Makefile) used for the build within the executable
756      - requested by CNH but off by default
757      - adds a paltry <9MB to the mitgcmuv executable in most cases
758      - only writes the output when useEMBEDSRC in eedata is true
759    o clean up 3-dim. relaxation codes:
760      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
761      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
762      * Thanks to Tom Haine for testing!
763    
764    checkpoint57z_post
765    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
766      affects output (@ truncation level) of exp. plume_on_slope ; updated.
767    o fix the pickup behavior for obcs in combination with ptracers
768    o fix a bug in ptracers_external_fields_load
769    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
770      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
771    o transfered surface NH pressure to eta field (if exactConserv).
772    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
773         and update lab_sea output.txt file.
774    o completing 3-dim. relaxation code: additional term
775         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
776      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
777      * At compile time, in "EXF_OPTIONS.h" set
778          #define  ALLOW_CLIMTEMP_RELAXATION
779          #define  ALLOW_CLIMSALT_RELAXATION
780      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
781          tauThetaClimRelax3Dim = 15552000.0,
782          tauSaltClimRelax3Dim  = 15552000.0,
783      * 3 cases:
784          1) Use a constant-in-time 3-dim. field
785          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
786          3) Real-time relax. to time-evolving prescribed field
787    o Adding Laplacian-type smoothness constraint on
788      initial and boundary (forcing) controls (ic, bc)
789      * enable at compile-time via
790        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
791      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
792      * Absolute scale somewhat unclear so far
793      * no area weighting was included since no other cost term does so far
794    
795    checkpoint57y_post
796    First step for a NLFS adjoint
797    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
798    o new init. routines for calc_r_star, calc_surf_dr
799    o still need to deal with ini_masks_etc
800    o testreport seemed happy
801    checkpoint57y_pre
802    
803    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
804    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
805    o add new offset feature to offline pkg (plus minor cleanup)
806    o cfc fixes for final year of integration
807    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
808      be in GCHEM_OPTIONS).
809    
810    checkpoint57x_post
811    o fix testreport Pb in multiple test experiment.
812    o cleanup our namelist syntax in verification:
813      - make it more F95 standards compliant (some work still needed)
814      - allows the vast majority of our tests to work with gfortran
815    o Non-Hydrostatic:
816     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
817     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
818    o Allow to apply AB on T,S rather than on AB(gT,gS):
819     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
820     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
821       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
822     - need a "clever" read_pickup to restart from the other AB formulation
823    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
824    o remove some unused variables (reduces number of compiler warnings)
825    o adjoint
826      * Disable useVariableViscosity for adjoint for time being
827        (there are a number of extensive recomputations)
828      * Initialize certain variables needed for adjoint
829    
830    checkpoint57w_post
831    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
832                 fix the singleCpuIO RS version of MDSWRITEFIELD
833       and add a WARNING if using globalFiles=T with multi-processors.
834    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
835      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
836    o tracer advection scheme:
837      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
838       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
839       was not very convenient).
840      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
841       (further tests needed for the implicit DST & Flux-Limiter schemes).
842    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
843      and sRef for convenience, handy, when you want to initialize
844      ptracers in a large domain with a constant non-zero value. Also,
845      untangle ptracers_init.F a little.
846    
847    checkpoint57v_post
848    o change dome exp. to use variable viscosity in side-drag terms.
849    o remove all the files from the cfc_offline test since they are now
850      incorporated into tutorial_cfc_offline which has been producing
851      identical results for a few days of testing
852    o add new parameter: sideDragFactor to enable half-slip-side BC
853      and change side-drag S/R to use viscosity from mom_calc_visc
854      (can switch back by setting sideDragFactor=0.); affects results at
855      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
856       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
857    o vorticity & strain are now computed without masking, to account for
858      no-slip-side BC in variable viscosity calculation ; mask is applied
859      anyway later on, before computing advection/coriolis terms.
860    o modify exp4 to test new obcs support for reading from external files
861      and for passive tracers
862    o fix behavior of ptracers_monitor when monitor output is written to a
863      netcdf-file; still not independent of monitor.F (writes in the same
864      file).
865    o change default value of tRef (put a uniform, meaningful value for ocean
866      & atmos) and initialize sRef (was missing, as Martin mentioned).
867    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
868      to be proportional to enstrophy dissipation length.  Thus,
869       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
870      This is now consistent with Smagorinsky and with the manual.
871    
872    checkpoint57u_post
873    o OBCS and PTRACERS: add open boundary support for passive tracers
874      - either use homogenous (pseudo) v.Neumann conditions or prescribe
875        OB-values from file; this is not different from the way theta and salinity
876        are treated
877      - however, Orlanski-radiation conditions are not supported, and the model
878        will stop if you use pTracers and Orlanski at the same time.
879      - beefed up the rountine obcs_external_fields_load: now only those open
880        boundary values are overwritten with values from files for which there
881        are really files, otherwise the OB-fields remain untouched. This makes
882        it possible to use different OBs at different ends of the domain (as
883        with EXF)
884    o reduce number of exch calls in shap_filt (s2).
885    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
886      truncation level) 4/5 MLAdjust test results (11&12 digits match).
887    
888    checkpoint57t_post
889    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
890    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
891      same truncation, independent of the face number: affects affects several
892      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
893    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
894      note that biharmonic viscosity + no-slip was not tested in any experiment.
895    o fix bug in non-linear free-surf side-drag ; generate new output for
896      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
897    o make mnc honor the writeBinaryPrec flag for most kinds of output
898    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
899    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
900      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
901    o add brackets in multi-terms sum to get same truncation, independent of
902      the face number (manage to get exactly same value of gU,gV at the cs-edge)
903      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
904    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
905      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
906      a maximum grid-scale Reynolds number.  Also, changes all length calculations
907      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
908      Suggested values of viscosity parameters found in mom_calc_visc.
909      Many new viscosity diagnostics available.
910    
911    checkpoint57s_post
912    o Add clearing-house for viscosity calculations, mom_calc_visc and
913      correct numerous bugs in LeithD and Smagorinsky discretizations.  
914      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
915      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
916      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
917      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
918      The Strain-Tension form is now called with useStrainTensonVisc=.true.
919      ViscAhStrain and viscAhTension are now retired.
920    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
921    o In response to JMC's bug report, genmake2 now ignores any soft-links
922      that it finds in the *current* directory when searching for files.
923      Soft-links found in any other source directories will still work as
924      they did before.
925    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
926      a C routine to unlimit the stack size
927    o mnc-ify pkg/aim snapshot vars
928    o mnc-ify pkg/land as requested by Daniel
929    o various changes to mnc including:
930      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
931      - output can now be grouped so that all files within a group
932          change the ITER portion of their names in lock-step together
933      - can now read ("global") PER-FACE (in addition to PER-TILE) files
934          and works with both EXCH1 and EXCH2 (but needs more testing)
935      - writing works for all verification test cases w/ g77 on Linux
936    
937    checkpoint57r_post
938    o make MNC variable initialization happen earlier
939    o add diagnostics for (almost) each term of the momentum Eq.
940    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
941    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
942    o remove MINIMAL_TAVE_OUTPUT option ;
943      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
944    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
945      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
946    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
947    o add time-dependent SST, SSS control
948    o cost terms in ecco/ modularized (new cost_generic.F)
949    o cost_averages routines are modularized (new cost_averagesgeneric.F)
950    o new infrastructure for seaice model vs. obs misfits in seaice/
951      * driver from the_main_loop.F is seaice_cost_driver.F
952      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
953      * gradient check in Exp. 6a of natl_box_adjoint/
954    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
955      (see README file)
956    
957    checkpoint57q_post
958    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
959    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
960      - bug was reported by Jean-Michel and Ian Fenty
961    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
962      update exp. cpl_aim+ocn output.
963    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
964      Needed for high-res. runs with large global files
965      to be able to limit tapelev size
966    o Changed some tests for adjoint:
967      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
968      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
969      * global_ocean.90x40x15/ back to default 3-level checkpointing
970    o Modifications to enable scripted COMMON to MODULE conversion
971      * verification/OpenAD/code/ has necessary scripts and description;
972      * converts, compiles and runs successfully;
973    
974    checkpoint57p_post
975    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
976    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
977      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
978    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
979    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
980      (was already the case for dissipation with mom_vecinv,
981       and also the case for grad.PhiHyd when staggered-timeStep)
982      This will allow to put dissipation out-off the AB time-stepping.
983     Unfortunately, affects truncation error. Update output of exp. that "fails"
984      (cg2d matching number) and leave the others for later: front_relax(10),
985      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
986      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
987    
988    checkpoint57o_post
989    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
990      (2) its ready to be documented during the 20050801 DocFest
991    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
992      for ideal_2D_oce and lab_sea on linux_ia32_g77
993    o set to #undef CTRL_SET_OLD_MAXCVARS_30
994      in global1x1_tot/code_seaice_adj to access indices 32, 33
995      (worth another tag)
996    
997    checkpoint57n_post
998    o adding precip control xx_precip 32
999    o adding swflux control xx_swflux 33
1000    o Replacing 10 forcing penalty cost routines by 1 generic.
1001    o Implementing partitioning in time-mean and variable adjustment
1002      for atmos. state.
1003    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1004    o in natl_box_adjoint:
1005      * updated exp 1 to 10
1006        (but does not have time-mean vs. variable split results yet)
1007    o updated global1x1/*_seaice_adj/
1008      to incorporate latest changes
1009    o enable useSingleCpuIO for mdsio vector routines
1010      (applies in particular to tapelev I/O)
1011    o removed inefficient K-loop in all active_file*control*.F
1012    
1013    checkpoint57m_post
1014    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1015      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1016    o pkg/exch2: filling of face-corner halo regions is optional
1017      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1018    
1019    checkpoint57l_post
1020     tag before updating tutorials (pre-release-2)
1021    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1022       for output and interpolation of input fields onto model grid)
1023    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1024       Affects results of exp. rotating_tank ; update output.txt.
1025    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1026          and taking the square quantity and/or using a fraction-weight field.
1027    o fix aim_diagnostics_init.F mate numbers.
1028    o add mnc output capability to diagnostics/diagstat and update
1029      our cvsignore files for the ACSII output generated
1030    
1031    checkpoint57k_post
1032    o lab_sea now uses diagnostics package and provides a suite of
1033      new EXF diagnostics output.
1034    
1035    checkpoint57j_post
1036    o exf
1037      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1038        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1039        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1040      * extended diagnostics output
1041        - now includes all EXF variables
1042        - hs, hl moved to common block
1043        - separate S/R for diagnostics, called after ctrl vector is added
1044        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1045        - EXFqnet contains true Qnet (i.e. includes qsw)
1046      * updated verif. lab_sea, global_with_exf
1047      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1048        to ensure that diagnostics sees a true EXFqnet
1049    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1050    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1051      several times with different frequencies.
1052    o mnc-ify the thsice package as requested by Daniel Enderton
1053      - the monitor--MNC output needs work
1054      - many attributes need to be added (most are currently blank)
1055    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1056      - many attributes need to be added (most are currently blank)
1057    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1058    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1059    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1060      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1061         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1062    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1063     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1064    
1065    checkpoint57i_post
1066    o Diagnostics package was changed: diagnostic allocation is now deactivated
1067      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1068    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1069      add 1rst Order upwind vertical Shear.
1070    o add a quick fix for A/B checkpointing in OFFLINE mode
1071    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1072      end-run around the C/Fortran linking horror in eesup/src/timers.F
1073    o added pkg/runclock: allows user to terminate run based on wall clock
1074    o added non-hydrostatic scaling parameter: nh_am2
1075    o pkg/my82: futile attempt to make results compiler-independent by adding
1076      some "_d 0", etc. no effect.
1077    o for mnc output, fill the 'T' coordinate var with myTime and create a
1078      separate 'iter' variable for iteration count
1079    o pkg/diagnostics:
1080      add new capability: output of Global/Regional & per-level statistics ;
1081      tested against monitor output (including land & thSIce) on various exp.
1082    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1083    
1084    checkpoint57h_done
1085      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1086      data.diagnostics, data.gchem, data.ptracers) is done.
1087    
1088    o pkg/diagnostics: prepare for Global/Regional statistics.
1089      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1090    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1091      and rename it: DIFFERENT_MULTIPLE
1092    
1093    checkpoint57h_post
1094    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1095    o pkg/diagnostics: change output frequency, now in seconds (instead
1096      of Nb of iterations). This requires to change data.diagnostics.
1097    checkpoint57h_pre
1098    
1099    o in mnc, let the user create the output dir if both mnc_outdir_date
1100      and mnc_outdir_num are false
1101    o add fflags() to pkg/diagnostics which allows one to specify, on a
1102      per-file basis, the file precision [default behavior is unchanged]
1103    o added diagnostics to pkg/kpp, including computation of mixed layer
1104      depth based on a temperature/density criterion
1105    o updated verification/natl_box to test the new pkg/kpp diagnostics
1106    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1107    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1108    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1109      not mnc -- this mistake was found by JMC and is now corrected
1110    
1111    checkpoint57g_post
1112    o add Adams-Bashforth 3rd Order time stepping:
1113      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1114      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1115    checkpoint57g_pre
1116    
1117    o make lambda[Theta,Salt]ClimRelax spatially varying
1118      (default remains spatially uniform constant based on tau)
1119    o added new control variables
1120      * init. uVel, vVel, etanN
1121      * lambda[Theta,Salt]ClimRelax
1122    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1123      (suggested by G. Forget)
1124    
1125    checkpoint57f_post
1126    o add parameter "baseTime" = model base time = time at iteration zero
1127      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1128      account for baseTime shift
1129    o move Coriolis arrays from PARAMS.h to GRID.h
1130    checkpoint57f_pre
1131    
1132    o mnc-ifying the seaice package
1133    o introduced an alternative length scale calculation for use in the limiting
1134      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1135    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1136    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1137      as well as grad(vort3).  Made it compatible with both approximate form
1138      for the cubed sphere and full form of these gradients.  Added flag
1139      useFullLeith to select between approximate and full form.  
1140    o add "d0" in getcon.F to reduce differences between compilers/platforms
1141      update output.txt of exp. fizhi-gridalt-hs
1142    o change port_rand funtion to allow to set the seed.
1143    o fix obscure MNC bug involving conversion between reals and integers
1144      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1145        new version is now more standards-compliant
1146    o adjoint-related modifications
1147      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1148      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1149      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1150    
1151    checkpoint57e_post
1152    o Adding eddy stress controls a la Ferreira et al.
1153    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1154    
1155    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1156      update output.txt of exp. fizhi-gridalt-hs
1157    o add more "Z" dimensions and associated coordinate vars to MNC
1158    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1159    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1160      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1161      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1162      months and years.  Requires pkg/cal.
1163    o diagnostics: add pickup functionality
1164      - off by default for backwards compatibility
1165      - current version only uses MDSIO -- MNC will be added
1166    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1167    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1168    
1169    checkpoint57d_post
1170    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1171    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1172      output from the diagnostics package
1173    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1174    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1175      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1176    o add coordinate variables to the MNC output from the diagnostics package
1177    o change MNC-flags default value: true when useMNC=TRUE
1178    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1179      the ability (off by default) to read the grid information using MNC
1180    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1181    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1182    o do snap-shot diagnostics at the middle of the time-interval (instead of
1183      at the end).
1184    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1185      new test for AIM with thSIce + slab-ocean
1186    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1187    o move state variable diagnostics to the beginning of the time step ;
1188      (note: still needs some work specially for snap-shot diagnostics)
1189      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1190    
1191    checkpoint57c_post
1192    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1193    o generate new output.txt files on faulks with g77 & the new -ieee option
1194    checkpoint57c_pre
1195    
1196    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1197      update output.txt of exp. global_ocean.90x40x15
1198    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1199      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1200    o add saltFlux(+File) forcing capability with periodicExternalForcing
1201    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1202    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1203    o improvements for the MNC output from DIAGNOSTICS:
1204      - correct handling of the unlimitied dimension
1205      - all dims now have associated coordinate variables
1206      - variables located at U, V, and Corner ("Z") points are now written
1207        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1208        *all* data points are output
1209    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1210    o added pkg/seaice/seaice_monitor.F
1211    o mdsio_readfield.F can now read files visible only to master MPI process.
1212    o pkg/seaice: some test code for ice-modified ocean stress
1213    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1214      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1215      spurious negative numbers for precipitation and humidity.  Will cause
1216      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1217    o pkg/ctrl/
1218      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1219        May be enabled via doPackDiag
1220      *  introduce z-scaling of
1221         + gradient (doZscalePack) and
1222         + control (doZscaleUnpack)
1223    o pkg/mdsio/
1224      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1225      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1226    
1227    checkpoint57b_post
1228    o simplify options in diagnostics_fill arguments (remove weird combinations)
1229    o fix MNC coordinate variables so that they now contain per-face index
1230      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1231      general, EXCH2 grids are only aligned to a "local" coordinate system
1232    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1233    o Implement instantaneous output within pkg diagnostics:
1234      setting a negative frequency in data.diagnostics produces
1235     "snap-shot" output (as opposed to time-average if freq > 0)
1236    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1237      NOTE: change ptracer diagnostics name: use 2 characters to work with
1238            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1239    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1240      becomes the coordinate variable for the 'T' dimension
1241    o add CF-style coordinate variables to MNC
1242      - just a first cut:  numbers are meaningless on the cubesphere and
1243        missing along the T axis but otherwise it works!
1244    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1245    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1246    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1247      this is based directly on what the model compute, so that the content of
1248      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1249    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1250    o clean up build options files for SunOS, in particular
1251      - remove -traditional from xmakedepend
1252      - change -xarch=v9 to -xarch=native for f77
1253      - restore use of make (not gmake)
1254      - add CC=gcc if using g77
1255    o changes per discussion of AM, JMC, & EH3 today:
1256      - move redundant "grid" variables out of "state" -- in preparation of
1257        creating proper CF-style coordinate variables and in recognition
1258        that any/all grid variables can be easily copied (eg. w/NCO) from
1259        the grid files into any of the other NetCDF files
1260      - *always* output grid variables with MDSIO (this will eventually be
1261        changed)
1262      - output MNC grid file if useMNC is true
1263    o every instance of _END_MASTER() has been found and replaced with
1264      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1265      preprocessors
1266    o re-arrange diagnostics pkg initialisation:
1267     - allow each package to extend the available diagnostics list
1268     - add some checking and fix small problems (multi-threaded, ...)
1269     - new S/R diagnostics_fill (replace fill_diagnostics):
1270       look through the short list of active diag. (instead of the long list)
1271       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1272    
1273    checkpoint57a_post
1274    o this set of changes restores TAMC compatibility
1275      tested for global_ocean.90x40x15 adjoint on trough
1276      (what a pain)
1277    
1278    checkpoint57a_pre
1279    o some modifs in tools/build_options for sunos
1280    o call ctrl_pack for ctrl at end for optimcycle=0
1281    
1282    checkpoint57
1283    o add horizontal bi-harmonic viscosity for vertical velocity
1284      - new parameter viscA4W (defaults to viscA4)
1285      - affects only non-hydrostatic code
1286      - to be done: no-slip lateral boundary conditions
1287    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1288    o implement Implicit Vertical advection for pTracers
1289    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1290      (implemented also for implicit vertical diffusion & advection)
1291    o OBCS: extend application of tracer open boundary conditions
1292      to a strip beyond the boundary of width Olx/Oly
1293    o add call monitor to TAF set of required calls (flow directives)
1294      and include in natl_box_adjoint
1295    o untangle a few ifdefs related to cost, ctrl, autodiff
1296      untangel a few ALLOW_ECCO_OPTIMIZATION
1297    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1298      (theta2, salt2 in ecco_cost_weights)
1299    
1300    checkpoint56c_post
1301    o OBCS as control variables
1302      - update ctrl_ad_diff.list, obcs_ad_diff.list
1303      - remove balance of obcs controls from default
1304      - fix index bug nobcs in ctrl_init
1305      - fix dummy fields filen in ctrl_pack
1306      - add dummy weights for obcs
1307    o lsopt: comment out fort.94 output
1308    o optim:
1309      - remove unnecessary header files
1310      - adjusted namelists
1311      - add xerbla.F to Makefile
1312    o exf:
1313      - multiple modifications of exf_check_range
1314      - unit change in exf_init_runoff from [m/year] to [m/s]
1315    o mdsio:
1316      - i/o-vector change debugLevel from debLevA to debLevB
1317    
1318    checkpoint56b_post
1319    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1320      is called from DO_THE_MODEL_IO
1321      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1322      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1323      - clean up PTRACERS_WRITE_TIMEAVE a little
1324    o add another verification experiment that tests both the cfc-pkg and
1325      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1326      reactive tendencies treated inline with regular timestepping
1327    o testreport previously did a lousy job of comparing small numbers, so
1328      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1329      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1330      testreport.
1331    o ptracers_monitor: bug fix for MPI
1332    
1333    checkpoint56a_post
1334    o GCHEM: finish reorganizating the package
1335      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1336        (introduces another 3D-array for each passive tracer, but only if
1337        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1338        gchemTendency is not needed because the timestep is done separately)
1339      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1340      - GCHEM is now---more or less cleanly---separate from PTRACERS
1341      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1342        so clear to me how that should be done in a general way.
1343    o CFC: improve formatting of output in CFC_ATMOS
1344    o PTRACERS:
1345      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1346        that ALL experiments with ptracers enable can be checked. This makes
1347        GCHEM_MONITOR obsolete.
1348      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1349        monitorFreq
1350      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1351    o add PTRACERS (PTR0[1-5]) to testreport output
1352    o exf_check_range:
1353      * default changed to .TRUE.
1354      * will check values for niter0 if debLevA, every timestep if debLevB
1355      * STOP in exf_check_range if 'out of range'
1356      * range chosen generous to allow for potential extema
1357      TBD: a version with stricter range
1358           permitted range would be runtime parameters
1359    o GMredi:
1360      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1361      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1362      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1363    o GCHEM:
1364      - move call to GCHEM_FORCING_SEP, so that it is now called before
1365        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1366      - introduced a useGCHEM runtime flag and applied it everywhere.
1367      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1368        this flag is now only visible within GCHEM-pkg routines.
1369      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1370        be replaced by a 3D array that is computed before thermodynamics; for
1371        this, the tracer ID iTracer had to be included into the parameter list
1372        of ptracers_forcing
1373      - set up forward_step to call gchem_forcing, that will replace
1374        gchem_forcing_int in ptracers_forcing
1375      - cleaning up
1376    o small cleaning of exch2: remove files that are also in eesupp/src
1377    
1378    checkpoint56
1379    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1380    o mnc: cleanup "full" files--fixes out-of-memory problem
1381    o ECCO-GODAE
1382      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1383      * fully merged and updated from SIO code
1384        windstress sign change affects
1385        - exf_inscal_[u/v]stress
1386        - sign of xx_tau[u/v] adjustments
1387        - signs in cost_scat
1388      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1389      * natl_box_adjoint updated and compressed
1390      * 2-level checkpoint switch added
1391        (tested in EXP. 1 of natl_box_adjoint)
1392      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1393    o SVD
1394      * first complete, non-hacked version for SVD calculations
1395      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1396        performed via direct access files admtlm_vector.it????
1397        (via ctrl_[un]pack)
1398      * optimcycle is used for ARPACK iteration counter
1399        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1400      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1401        and add linear transforms where necessary
1402      * controls are initial/final SST, SSS (can be extended; need to check
1403        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1404    o mdsio: filename info to both stderr, stdout
1405    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1406      from sign change
1407    
1408    checkpoint55j_post
1409    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1410      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1411    o add consistent build directories and .cvsignore files to verification
1412    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1413    o make all subroutines 30 or less characters in length for certain older
1414      compilers to work (a thorough search only turns up two routines in
1415      pkg/ptracers)
1416    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1417      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1418    
1419    checkpoint55i_post
1420    o change arrays for total vertical diffusivity (2.D if explicit,
1421      3.D if implicit) ; each ptracer uses its own background value.
1422    o added mnc/NetCDF output capability to ocn_compon_interf
1423      - added bits to verification/cpl_aim+ocn so that it can run on
1424        ITRDA and other clusters without the mpirun "-wd" option
1425    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1426      configuration
1427    o give MNC the ability to create additional files rather than
1428      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1429      - the default is just less than 2GB which is a practical limit
1430        on many systems
1431    o Compute the non-local term using either KPP vertical diffusivity (=default)
1432       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1433    
1434    checkpoint55h_post
1435    o add verification test "vermix"
1436    o remove all the *_ioinc flags and replace with the single global
1437      outputTypesInclusive flag
1438    o allow to set a vertical profile of vertical diffusivity for T & S
1439    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1440    o useMNC moved from data.mnc to data.pkg
1441    
1442    checkpoint55g_post
1443    o Renaming carbon AD experiments to comply with testreport conventions
1444    o Updating adjoint of Held-Suarez hs94.1x64x5
1445    o Fixing directives for non-ECCO forward_step, after ECCO directives
1446      have been fixed to avoid recomp. of do_oceanic_phys
1447      Works well for global_ocean.90x40x15,
1448      but recomp. issue remains for carbon
1449    o Updating adjoint output for natl_box_adjoint after
1450      pkg/ecco has been modified (see taga c55d_post)
1451    
1452    checkpoint55f_post
1453    o rename to timeave_init_fixed
1454    
1455    checkpoint55e_post
1456    o some delicate re-shuffle of store directives to avoid one
1457      extra call of do_oceanic_physics
1458      affects ecco_the_main_loop.F, do_oceanic_physics.F
1459      checkpoint_lev1_directives.h
1460    o NB: this may break global_ocean adjoint temporarily,
1461      but it is clear how to fix it. Will do later, need this now.
1462    
1463    checkpoint55d_post
1464    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1465    o ecco_cost_weights is modified to 1x1 runs
1466    o modifs to allow observations to be read in as
1467      single file or yearly files
1468    o enable to read exf forcing fields as either
1469      single file or yearly files (flag useExfYearlyFields)
1470    checkpoint55d_pre
1471    
1472    o switch between 2-level and 3-level checkpointing
1473    o add ability of MNC to write local and "partial" (eg. 2D slices where
1474      the full 3D field is never actually stored) arrays to NetCDF files
1475      with the correct (that is, the complete multi-dimensional) set of
1476      array indicies
1477      - used in mom_vecinv() to write the diagFreq output
1478      - tested (demonstrated) in verification/aim.5l_cs
1479    o further mnc-ification
1480      - add verification/lab_sea to the list with mnc setups
1481      - fix undefined mnc v-names in cd_code
1482      - add kpp to mnc output (both snapshot and timeave)
1483    o non-hydrostatic code
1484      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1485        in calc_gw.F
1486      - defaults to viscAh
1487      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1488        friction or Leith) in non-hydrostatic mode, as long as there is
1489        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1490    o pkg/cost
1491      extend simple cost functions to treat time mean quantities
1492      (T,U,V) via cost_accumulate_state from cost_tile
1493    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1494        be 2 times larger than the minimum size the advection scheme requires.
1495        now get a perfect conservation of salt in advect_cs test-exp (updated)
1496    o GGL90 (Gaspar's TKE mixed layer)
1497      - add horizontal diffusion of TKE, requires exchanges in
1498        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1499        default. In OPA there is no horizontal diffusion of TKE but the
1500        mixing coefficients are computed from a horizontal average of TKE of
1501        6 points or so. I think that diffusion has a little more physical
1502        justification.
1503      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1504        was in vain)
1505      - mask tke-variable in ggl90_init
1506    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1507    o fix biharmonic diffusion on CS-grid.
1508    o more obcs stuff
1509      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1510        for reading boundary values. This routine is called from
1511        obcs_prescribe_read
1512      - updated obcs_check
1513      - changed sponge layer relaxation parameter units for days to seconds
1514      - turned off sponge layer by default
1515      - changed argument list of OBCS_CALC to myTime+deltaTclock
1516      - fixed about 35 bugs in obcs_external_fields_load
1517    
1518    checkpoint55c_post
1519    o obcs stuff
1520      - new runtime flags useOBCSprescribe, useOBCSbalance
1521      - re-arranged obcs_calc
1522      - moved exf_getobcs to obcs_prescibe_read
1523        obcs_prescibe_read is called after ORLANSKI stuff
1524        and independent of it (executable can contain all).
1525      - updated obcs_check
1526      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1527        These may be necessary only if tangential velocities are
1528        prescribed at OB, not sure, needs testing.
1529    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1530      which simplifies the calls and passes the ifc check-bounds test
1531    
1532    checkpoint55b_post
1533    o add a 2D scalar, Z location, exchange_2 routine.
1534    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1535      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1536      affects advect_cs results (for the wrong reason): update output.txt
1537    o use a more standard discretization for biharmonic viscosity ;
1538     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1539      affects results of dome set-up: update output.txt
1540    o fix gad_advection.F (CubedSphere part), back to version 1.23
1541    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1542    
1543    checkpoint55a_post
1544    o merged code to
1545      * prescribe/read time-dependent open boundaries
1546        (works in conjunction with exf, cal)
1547      * sponge layer code for open boundaries
1548      * each boundary N/S/E/W now has its own CPP option
1549        (healthy for the adjoint)
1550    
1551    checkpoint55
1552    o up-to-date adjoint of previous breaks
1553      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1554      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1555      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1556      - carbon: * remove tr1-related adjoint verification
1557                * add ptracer as control variable
1558    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1559      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1560    
1561    checkpoint54f_post
1562    o in verification/carbin/ remove experiment related to
1563      ALLOW_PASSIVE_TRACER (array tr1 etc)
1564      code_ad/ input_ad/ results_ad
1565    
1566    o add two new packages
1567      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1568        + subject to optimization (memory)
1569      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1570        + subject to reordering (many GOTOs in the original code)
1571        + so far opps is called for every (i,j) point, and then operates in
1572          the vertical; one may want to reorder the scheme in order operate in
1573          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1574          fields)
1575    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1576      - all verification tests compile and run with linux_ia32_g77
1577      - defaults are compatible with current input files--nothing
1578        should change if you were not previously using MNC
1579      - MNC output has been added in numerous places (eg. timeave)
1580        but there are still a few writes not yet do-able with MNC
1581        (this is in progress)
1582      - flags now allow for either/or/both use of MDSIO and MNC and
1583        documentation will soon follow
1584      - numerous small formatting cleanups for ProTeX
1585    o add version info (via BUILD_INFO.h) to MNC and stdout
1586    
1587    checkpoint54e_post
1588    o add two new packages
1589      - pp81 (Packanowski and Philander, 1981), Richardson number and
1590        stratification dependent mixing
1591      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1592      - these scheme operate in a similar manner as KPP (without ghat, of
1593        course), however there is only one diffusivity that is used for both
1594        temperature and salinity (and passive tracers)ç
1595    o add offline package
1596    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1597      provided by Stephanie Dutkiewicz
1598    o genmake2: add ability to search for C compilers and cleanup test output
1599      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1600    
1601    checkpoint54d_post
1602    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1603    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1604      leading to additional shift by 5 days each year of integration
1605       (i.e. leading to considerable offset over the years)
1606    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1607    o start with no AB and no initial filtering (staggerTimeStep):
1608      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1609    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1610      (external loading & cpl import/export stay in forward_step.F)
1611    o update coupling interface to work with new staggerTimeStep
1612    o change MDSIO ptracers_pickup.
1613    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1614    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1615    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1616    
1617    checkpoint54c_post
1618    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1619      this affects (truncation error) output.txt of test-exp:
1620       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1621    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1622    o change Qnet to always be the net heat flux, (+upward).
1623      affects (truncation error) output of natl_box exp.: updated
1624    o define the max number of passive tracers in PTRACERS_SIZE.h
1625    o start to test mnc routinely in exp0
1626    o add sea-ice loading (sIceLoad) as a new forcing field.
1627    
1628    checkpoint54b_post
1629    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1630       impressive on Altix and Opteron systems)
1631    o diagnostics can now write NetCDF files through the mnc package
1632    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1633    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1634    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1635      affects (truncation error) output of lab_sea & natl_box exp.: updated
1636    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1637    
1638    checkpoint54a_post
1639    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1640    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1641    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1642    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1643      + internal_wave (shift in writing cg2d_ini_res)
1644    checkpoint54a_pre
1645    
1646    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1647      - modified verification/lab_sea and natl_box_adjoint accordingly
1648    
1649    checkpoint54
1650    checkpoint53g_post
1651    o prepare splitting of thermodynamics: store convect.counter in common block
1652    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1653      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1654    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1655    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1656    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1657    o restore adjointability
1658    
1659    checkpoint53f_post
1660    o modifications that affect AIM experiment results (update output.txt):
1661      - no advection of S at top interface Nr (pkg/generic_advdiff)
1662      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1663    o AIM pkg:
1664      - include stability function into surf.Flux derivative relative to Tsurf
1665      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1666    
1667    checkpoint53e_post
1668    o merged cylindrical coord configuration
1669    o added rotating_tank experiment
1670    checkpoint53e_pre
1671    
1672    checkpoint53d_post
1673    o faulks upgraded: re-generate output.txt that have changed:
1674       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1675    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1676    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1677    o added Sadourny discretization of Coriolis
1678      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1679      - re-enabled use of omega3 (useAbsVorticity)
1680    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1681      vector-invariant equations
1682      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1683    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1684      hopefully without new bugs
1685      - still to do: biharmonic friction for non-hydrostatic w
1686    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1687    o regenerated output for global_ocean_ebm (using -ieee)
1688    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1689      of mom_common/
1690      - simple re-arrangement of instructions within computing loop
1691    checkpoint53d_pre
1692    
1693    checkpoint53c_post
1694    o new version of coupler for AIM+thSIce and Ocean models
1695     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1696     - land: change Evaporation of snow
1697     - aim with thSIce: fix bug in snow-precip.
1698    o changes to calc_gw.F
1699     - bug fix for w^2 term near the bottom boundary
1700     - (hopefully) improve the lateral slip boundary condtions for use with
1701        partial/looped cells
1702      - because the bug fix changes two verification experiments anyway (exp5
1703        and plume on slope), change the lateral boundary condition from half slip
1704        to the value of no_slip_sides
1705    o ebm package wasnt quite up to the parallel task. Fixed that.
1706    o Adjoint of EBM package + verification
1707      * TLM OK
1708      * ADM not sufficient accuracy yet (needs further testing)
1709    
1710    checkpoint53b_post
1711    o Commiting new energy balance model to repository
1712      * package is pkg/ebm
1713      * verif. is verification/global_ocean_ebm
1714      * references are in ebm_driver.F
1715    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1716    C        Global thermohaline circulation. Part I:
1717    C        Sensitivity to atmospheric moisture transport.
1718    C        J. Climate 12(1), 71-82
1719    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1720    C        Global thermohaline circulation. Part II:
1721    C        Sensitivity with interactive transport.
1722    C        J. Climate 12(1), 83-91
1723    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1724    C        Destabilization of the thermohaline circulation
1725    C        by atmospheric eddy transports.
1726    C        J. Climate 7(12), 1870-1882
1727    o Will need long integration testing.
1728    checkpoint53b_pre
1729    
1730    o created pkg/mom_common in preparation for variable viscosity code
1731    o renamed and split ini_mnc_io
1732    o pkg/land: only liquid water can diffuse or run-off
1733    o AIM using land: soil wetness availability account for snow
1734    o added printMapIncludesZeros to EEPARMS namelist
1735    
1736    checkpoint53a_post
1737    o restore TAMC compatiility for exf_constants.h
1738      (no usage of _d in .h)
1739    o Additional storing in KPP in an attempt to fix
1740      TAMC problem with adjoint of KPP code.
1741      (no success...)
1742      Identical code works fine with TAF.
1743    o Fixed verification/natl_box_adjoint experiments.
1744      Initial conditions for Experiments 4 and 5 are now
1745      set to "SEAICE_initialHEFF=0", which is more reasonable,
1746      and hence gives results closer to that of Experiment 2.
1747      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1748    
1749    checkpoint53
1750    o stable checkpoint with up to date adjoint
1751      TLM tests only run for 1st grdchk at the moment. Its unclear if
1752      this is a code problem or a problem with resetting code for g_
1753      variables that is being autogenerated wrong.
1754      Otherwise:
1755       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1756       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1757         are both still in chaos following their security messes.
1758    
1759    checkpoint52n_post
1760    o various build (mostly genmake2) changes including:
1761      - ability to build/run more easily within Cygwin and MacOS X
1762      - more complicated Makefiles with a stronger dependence on Gnu Make
1763    o pkg/seaice modifications
1764      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1765        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1766        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1767      - changed proxy for geostrophic velocity and updated
1768        verification/lab_sea/results/* accordingly
1769      - removed ADI dynamic solver from pkg/seaice
1770      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1771        they caused a segmentation fault under certain circumstances
1772      - removed unused field WATR
1773    o bug fix in exf-package:
1774      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1775         now reflect that.
1776    o small fixes in the cal-package:
1777      - set reference date to first of January for the 'model'-calendar
1778      - failing of cal_CheckDate in cal_FullDate now actually results in a
1779        warning
1780    o small modifications in exf-package to increase flexibility:
1781      - change climtempfreeze from a constant to a runtime parameter that
1782        is specified in data.exf_clim (default = -1.9)
1783      - introduce runtime parameter windstressmax (default = 2.0) that is
1784        specified in data.exf
1785    o fix in pkg/thsice:
1786      - update Evap (Tsf changes) to be consistent with Latent heat flux
1787      - maintain snow precipitation unchanged (even if Tsf >=0).
1788     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1789    
1790    checkpoint52m_post
1791    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1792      this does not change any of the results, because myIter=0 in swfrac always
1793      lead to jwtype=2 (the default anyway), but the call makes little sense
1794      as a default
1795    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1796    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1797      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1798    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1799    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1800    o extending useSingleCpuIO option to work with new exch2 I/O format
1801      - old-style, missing-tile I/O is still accessible by defining CPP
1802        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1803    o monitor package can write to NetCDF files and/or STDOUT
1804    o fix re-definition bug in MNC_GRID_INIT_ALL()
1805    o doc/api_reference added
1806      - a framework for building an API Reference Manual using all
1807        the "protex" comments embedded in the code
1808      - see pkg/generic_advdiff, pkg/mnc for examples
1809    o MNC:
1810      - make myThid the last argument for all subroutines
1811      - new default for the grid files: NO halos
1812      - add useMNC and other run-time flags
1813      - separate per-file-group handling of the unlimited dimension
1814      - early initialization of MNC w/ flags read at the eeboot stage
1815        and lookup tables set in initialize_fixed
1816      - write all MNC output to a freshly-created directory
1817    o thermodynamics sea-ice (thsice) is now tested with testreport.
1818    o test exp. advect_cs: use the standard cs32 grid ; update output.
1819    o Added functionality to grdchk:
1820      pick global i,j,k position (or nearest wet) where to perform check.
1821    
1822    checkpoint52l_post
1823    o new land formulation:
1824      a) use ground enthalpy as prognostic variable to ensure exact
1825         energy conservation.
1826      b) account for water temperature and for latent heat of freezing
1827         in all processes (rain, run-off, ground storage)
1828      c) compute surface and ground temperature implicitly.
1829    o aim_v23 modification for new land model:
1830      a) Treat separately land / ocean / sea-ice surface fluxes
1831         to allow implicit computation of land & sea-ice surface temp.
1832      b) add snow precipitation.
1833    checkpoint52l_pre
1834    
1835    o fix problem (when 1 tile is empty) in min/max monitor.
1836    o fix bug in timeAve (u,vZetatave in common block)
1837    o no restoring terms under ice for pkg/seaice
1838    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1839    o bug fix for pkg/seaice pickups
1840    o change MNC call locations and add coordinate attributes
1841    o mask vorticity at the corner ; affects global_ocean.cs output
1842    o fix ini_curvilinear_grid ; test CS experiments with mpi
1843    o aim.5l_cs: modify sea-ice fraction input file ; update output
1844    o exf: Adding simple range check routine for exf fields after read
1845    
1846    checkpoint52k_post
1847    o removed top-level directory "diags"
1848      - we migrated these functions to pkg/timeave a long time ago
1849    o fixed bug introduced in pkg/monitor
1850    o accuracy ctrlprec = 32 insuffient for gradient checks using
1851      averaged fields (I/O via cost_averages)
1852      -> use ctrl.h in active_file*.F to control I/O precision.
1853    o paramter list of CALL ADTHE_MAIN_LOOP
1854    o added initial do_the_model_io to ecco
1855    o set all ...Freq to zero after cost_final
1856      taveFreq, dumpFreq, pChkptFreq
1857    o MAIN and ECCO differentiability restored
1858    
1859    checkpoint52j_post
1860    o fix nchklev in tamc.h for global_ocean...
1861    o Bringing flow and store directives up-to-date
1862    o Really weird thing!
1863      call do_the_model_io from the_main_loop with parameters
1864      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1865      TAF places a faulty re-call of initialise_varia
1866      after cost_final call which should not be there!
1867    checkpoint52j_pre
1868    
1869    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1870      error messages
1871    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1872    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1873      debug output
1874    o modfied mdsio_writefield.F to handle non-global files under exch2
1875    o update AIM Cubed-Sphere exp (aim.5l_cs):
1876      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1877    o update AIM Equatorial Channel exp:
1878      use standard aim_v23 pkg and change the SST fields to be more realistic.
1879    o globalFile now works with exch2
1880    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1881      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1882    o limit timeave output for hi-res integrations
1883    
1884    checkpoint52i_post
1885    o removed CPP_EEOPTIONS.h from verification/*/code
1886    o updated the tiling for global_ocean_pressure
1887    checkpoint52i_pre
1888    
1889    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1890      the old pkg/aim).
1891    
1892    checkpoint52h_pre
1893    o shortened offending lines in exch2_send_rx?.template
1894    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1895    o genmake2: add build & execute test for NetCDF code
1896    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1897      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1898    o added useSingleCPUIO flag to monitor.F and mon_out.F
1899    o added temporary hack for sea-ice dynamics on the cube:
1900      metric terms are ignored and it is assumed that
1901      there is no sea-ice on cube faces 1, 2, 4, and 5.
1902    
1903    checkpoint52f_post
1904    o added exch2 cube routines to pkg/exch2
1905    o modified hs94.cs-32x32x5 to use it
1906    o added new grid files to hs94.cs-32x32x5
1907    checkpoint52f_pre
1908    
1909    checkpoint52e_post
1910    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1911      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1912    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1913      to work with implicit vertical advection and AB ;
1914    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1915    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1916     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1917    checkpoint52e_pre
1918    
1919    o fix bug in impldiff when Nr=1 or Nr=2.
1920    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1921    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1922    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1923      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1924    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1925    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1926    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1927    
1928    checkpoint52d_post
1929    o re-tiled many expts to allow comparison in multi-processor mode
1930      - updated output accordingly
1931      - changed hs94.128x64x5 to use intial T from file rather than use the
1932        random number generator
1933    o add infrastructure in model routines for fizhi and gridalt packages
1934    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1935    o changes to permit hi-res, cubed-sphere, configuration
1936      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1937      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1938      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1939        of surface winds for the cube
1940      (A verification experiment, based on global_ocean.cs32x15, but with
1941       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1942       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1943       complete with example surface forcing files and matlab scripts to look
1944       at the output and compare it with that of global_ocean.cs32x15.)
1945    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1946       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1947       to conform to the common rule.
1948    o check-in the first version of the coupler + interfaces for multi-components
1949       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1950       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1951       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1952       - ocean and atmos. share the same horizontal grid (no interpolation).
1953       - exchanges between component and coupler is done in forward_step
1954    o new verification experiment, cpl_aim+ocn:
1955       coupled ocean - AIM atmosphere on cs32 grid.
1956    
1957    checkpoint52d_pre
1958    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1959    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1960    
1961    checkpoint52c_post
1962    o Fixing OPTIONS files for use of exf:
1963      - ALLOW_ECCO not needed
1964      - ECCO_CPPOPTIONS.h should not be included from
1965        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1966        as has been the case in the past
1967      - All cal/exf related options are currently set in
1968        single header file. Should remain so until we
1969        agree on a consistent new policy.
1970    o Removed all CPP options for cal package.
1971      cal has no more CPP options.
1972    o modified STOREs in GAD_ADVECTION
1973    o corrected key comp. for passkey
1974    
1975    checkpoint52b_post
1976    o new version: "thsice" of thermodynamic sea-ice pkg:
1977     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1978     - modify fluxes but do not change theta directly;
1979     - light cleaning of bulk_force pkg (still needed with thsice).
1980     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1981       + output_thsice.txt to test thsice & bulk_force pkgs.
1982    o put back grid & coriolis monitor output.
1983    checkpoint52b_pre
1984    
1985    o call "do_the_model_io" at the beginning (=> dump initial state)
1986    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1987    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1988      (need info on NUMBER_OF_PTRACERS)
1989    o missing PTRACERS headers in some routines
1990    o default tamc.h in pkg/autodiff supposed to crash
1991      to ensure proper customization
1992    
1993    checkpoint52a_post
1994    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1995      - moved surfaceTendencyTice from pkg/seaice to main code
1996      - subroutine FREEZE_SURFACE now limits only surface temperature
1997        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1998        => new output.txt for global_ocean.cs32x15 & global_with_exf
1999      - keep the old version of FREEZE for backward compatibility;
2000        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2001      - corresponding modifs for TAF directives
2002    o added surface flux output variables to TIMEAVE_STATVARS
2003    o time-averaged output for pkg/ptracers
2004    o fix problem with ECCO-related divided adjoint
2005      snapshot file was missing some ad-variables,
2006      but no warning issued by TAF
2007    
2008    checkpoint52a_pre
2009    o some bug fixes for #undef REAL4_IS_SLOW
2010    
2011    checkpoint52 = ecco_c52_e35
2012    o after testing adjoints of checkpoint51u_post
2013    
2014    checkpoint51u_post
2015    o this is the post-merge tag of the ecco-branch
2016      (needs another clean checkout and re-testing)
2017    o various natl_box_adjoint configs and results
2018      but no input fields
2019    o obcs adjoint not yet merged!
2020    o adding ECCO global 1x1 and 2x2 degree configs
2021    o updated/extended some store directives for seaice
2022    o pkg/ecco now containes ecco-specific part of cost function
2023    o top level routines the_main_loop, forward_step
2024      supersede those in model/src/
2025      previous input data.cost now in data.ecco
2026      (new namelist ecco_cost_nml)
2027    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2028    
2029    checkpoint51t_post
2030    o this is the pre-merge tag of the ecco-branch
2031    
2032    checkpoint51s_post
2033    o cleanup: removed various obsolete #define-s
2034    o pkg/grdchk
2035      - renamed 'ph-grd 3' to 'grad-res'
2036      - merged from ecco-branch
2037        (remaining bug fixes for obcs gradient checks)
2038      - additional high-precision output for testreport
2039        (grep for 'precision_grdchk_result')
2040    
2041    checkpoint51r_post
2042    o cleaned up or removed CPP_OPTIONS.h files
2043    o updated results for some of the tests to reflect the new
2044      optfiles (-ieee: -O0 instead of -O3)
2045    
2046    checkpoint51q_post
2047    o cd_code:
2048      - moved cd_scheme.F -> cd_code_scheme.F
2049      - separate read_checkpoint from cd_code_ini_vars.F
2050      - separated cd_code part from write_checkpoint
2051      - updated AD_SOURCE, generated .flow
2052      - added CD_CODE_VARS.h to the_main_loop
2053      - Moving cd_code specific store dir.s to pkg/cd_code
2054    o ctrl package totally restructured
2055      - pack/unpack now optional and decoupled from
2056        xx_/adxx_ I/O
2057      - ctrl_pack/unpack cleaned
2058        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2059      - confined inclusion of AD_CONFIG.h to where necessary.
2060    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2061    
2062    checkpoint51p_post
2063    o create initial cd_code package
2064      - WARNING: the initialization of fields within packages
2065        is broken because INI_FIELDS (where READ_CHECKPOINT is
2066        called) is called *before* PACKAGES_INIT_VARIABLES.
2067        This seems to be backwards since
2068        1) its important to initially zero the entire field including
2069           the "halo" region
2070        2) zeroing needs to be done *before* reading pickup info
2071           and the pickup call might or might not happen in any
2072           particular run
2073      - this needs an overhaul for R2
2074    o cleanup verification/*/code/GMREDI_OPTIONS.h
2075    o cleanup testreport
2076    
2077    checkpoint51o_post
2078    o bringing AD-related verif's up to date with genmake2
2079      - carbon/
2080      - global_ocean.90x40x15/
2081      - hs.94.1x64x5/
2082      - (front_relax/ )
2083    o (more) consistent directory structure for AD-related verif.'s
2084    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2085    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2086    o bug fix in find_alpha.F for MDJWF:
2087      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2088        change rho -> rho-rhoConst
2089      - replace call find_rho to find_rhonum
2090    o initialisation of rFlx extended to full array (required by TAF)
2091      and shifted to thermodynamics
2092    o removed PTRACERS.h in ptracers routine
2093    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2094    o Correcting initialisations for fVerU, fVerV.
2095    o helping TAF to recognize dependency on kUp for
2096      fVerU, fVerV
2097    o Replacing delZ by delR in pkg/ctrl/
2098    checkpoint51o_pre
2099    
2100    o undid all of cp51 pending some cleanups and discussion
2101    o added the [#include "AD_CONFIG.h"] statement to all files that need
2102       it for adjoint/tl #defines
2103     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2104     o removed tools/genmake since it no longer works
2105    
2106    checkpoint51n_post
2107    o modifications to make FREEZE flux visible to pkg/kpp
2108      - moved surfaceTendencyTice from pkg/seaice to main code
2109      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2110      - subroutine FREEZE now limits only surface temperature
2111        (this means new output.txt for global_ocean.90x40x15,
2112         global_ocean.cs32x15, and global_with_exf)
2113    o added surface flux output variables to TIMEAVE_STATVARS
2114    
2115    checkpoint51n_pre
2116    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2117    o added [#include "AD_CONFIG.h"] to all files that use the following
2118      defines:
2119      - ALLOW_ADJOINT_RUN
2120      - ALLOW_TANGENTLINEAR_RUN
2121      - ALLOW_ECCO_OPTIMIZATION
2122    
2123    checkpoint51m_post
2124    o incorporating changes to get TAMC/TAF working in genmake2
2125      - added new TAMC/TAF targets to the Makefile
2126      - various cleanups related to package handling
2127      - these changes should have no impact on the forward model
2128    
2129    checkpoint51l_post
2130    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2131     - faster algorithm for cal_addtime.F
2132     - higher precision arithmetic, where needed
2133     - pkg/exf *startdate variables changed from calendar date to
2134       model integration time
2135    
2136    checkpoint51l_pre
2137    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2138    o enable to apply restoring on S & T only in a latitude band.
2139    o update output (external_forcing_surf modif. change truncation errors)
2140       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2141    
2142    checkpoint51k_post
2143    o change default to: useNHMTerms=.FALSE.
2144     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2145       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2146     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2147        exp1, ideal_2D_oce
2148     - change data file of oceanic exp (leave the results unchanged for now)
2149       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2150    o set gravitySign automatically according to the vertical coordinate used
2151      (and change sign: back to "logical" value: +1 when R increases downward)
2152    o added an include barrier to the default CPP_OPTIONS.h and
2153      removed the #include "PACKAGES_CONFIG.h" from it
2154    o fix a bug in mom_fluxform (from chk51j_post)
2155    
2156    checkpoint51j_post
2157    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2158    o adjusted some flow directives (dynamics, thermodynamics)
2159    o added cubed-sphere case to test cost function
2160    o heckpoint_lev?_directives.h now include
2161      pkg-specific directives, whenever those are enabled.
2162    o Moving pkg-specific flow directives to corresponding pkg
2163      Moving pkg-specific differentiation list to corresponding pkg
2164      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2165      ---> conventions are
2166           - pkg_ad.flow
2167           - pkg_ad_diff.list
2168           - pkg_ad_check_lev?_dir.h
2169    
2170    checkpoint51i_post
2171    o merge of the branch-genmake2
2172      - knowingly breaks the older genmake
2173      - automatic generation of all ALLOW_${PKG_NAME} defines
2174      - new testreport supersedes older testscript
2175    o large number of package inclusion and header cleanups
2176    checkpoint51i_pre
2177    
2178    o new output for adjoin of global ocean vector invariant
2179    o fix for checkpoint of thermodynamic seaice and bulk_force
2180    o Steph gchem various cleanups
2181    
2182    checkpoint 51h_pre
2183    o fixed some single quotes
2184    o modify gchem pkg to be more versatile
2185    o modifications to clean up dic pkg
2186    o add pkg/cfc
2187    
2188    checkpoint51g_post
2189    o provide links for ARPACK and ADM*TLM
2190    o start removing verification/vero/
2191    o update AD-related stuff
2192      (in particular some IF-statements in model/src/ routines)
2193    o adding to verification/global_ocean.90x40x15/ adjoint of
2194      vector invariant setup
2195    
2196    checkpoint51f_post
2197    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2198    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2199      of tracer Green's fucntions for ocean inversion project.
2200    
2201    checkpoint51f_pre
2202    o Added on-the-fly spatial interpolation capability
2203        "USE_EXF_INTERPOLATION" to pkg/exf.
2204      - This is a temporary Cartesian-grid hack until
2205        the super-duper ESMF coupler becomes available.
2206      - See verification/global_with_exf/README for usage example.
2207      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2208        flags and modified pkg/seaice accordingly.
2209    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2210        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2211        non-local transport term.
2212    
2213    checkpoint51e_post
2214    o pkg/mom_vecinv:
2215      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2216      - add time-ave diagnostic of vorticity advection.
2217    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2218    o atmospheric geopotential: - include water vapor effect;
2219                                - use p^kappa in p* scaling.
2220    o land pkg: read initial state from files.
2221    o AIM : add stratospheric drag in the upper level
2222    
2223    checkpoint51d_post
2224    o change function ILNBLNK (=> last non-blank char.) to return zero
2225      (instead of the string length) when the string. char is empty
2226    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2227    o modif's to restore TAMC compatibility
2228      - avoid "_d" constructs in PARAMETER declarations
2229      - avoid interrupting lines by comment lines
2230    o Use cluster local disks for purely local I/O
2231      vs. globally visible disks needed for ctrl stuff
2232      (merged from ecco-branch)
2233      - new active_file_loc... and mdsio_..._loc routines
2234      - affected packages: autodiff, ctrl, grdchk, mdsio
2235    
2236    checkpoint51c_post
2237    o introducing integer flag debugLevel
2238      - debLevZero: suppress all output
2239      - debLevA: standard
2240      - debLevB: equivalent to current debugMode=.TRUE.
2241    o introducing pathname variable mdsioLocalDir for mdsio
2242      that can be specified at runtime
2243      (relevant for cluster I/O to local disk)
2244    `
2245    >>>checkpoint51b_post
2246    adjoint of ptracers
2247    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2248    o extended state in checkpoint_lev?, etc.
2249    o alternative ctrl/cost with tr1 or ptracer
2250    o new comlev1_bibj_ptracers
2251    o new ptracers.flow
2252    o made ptracers_forcing same as external_forcing_s
2253    o added verification for adjoint with ptracers
2254      - adm. grdchk fail so far
2255      - tlm. grdchk OK
2256      - checked tapelev/comlev recomputations: OK
2257    <<<checkpoint51b_pre
2258    
2259    checkpoint51a_post
2260    o added code for biogeochemistry package
2261      - new pkgs: dic, gchem
2262      - new subroutine in ptracers
2263    o modify code for biogeo packages
2264      - in model/src and pkg/ptracers
2265    
2266    checkpoint51
2267    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2268      - autodiff, ctrl, exf, grdchk, seaice
2269      kept separate packages
2270      - cost, ecco, obcs
2271    o updating verification/internal_wave, verification/lab_sea
2272      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2273    
2274    checkpoint50i_post
2275    o Preparing next differentiable checkpoint and sync
2276      of MAIN vs. ecco-branch
2277      - 1st step: this one is differentiable
2278      - 2nd step: next(! not this) checkpoint will have updated packages
2279                  from ecco-branch)
2280    
2281    checkpoint50h_post
2282    o new package "land": provide surface BC for AIM.
2283    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2284    o AIM: use true log-P extrapolation for near surface temp (= as in
2285        F.Molteni paper) ; update aim.5l_cs output.
2286    o New variable in PARM03 for more flexible pickups
2287    o somewhat cleaned package initialisation sequence for
2288      ctrl/ cost/ ecco/ in packages_... routines
2289    
2290    checkpoint50g_post
2291    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2292      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2293      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2294        made the default because of faster convergence than ADI
2295    
2296    checkpoint50f_post
2297    o exf totally restructured
2298      - replaced all exf_set_ routines by one generic exf_set_gen.F
2299        and made sure it's still differentiable
2300      - split exf_getffields.F into new exf_bulkformulae.F
2301      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2302      - updated adjoint/makefile and relevant verif. accordingly
2303    
2304    checkpoint50f_pre
2305     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2306          + change Evap over land. (update aim.5l_cs output)
2307     o added missing .cvsignores and made uniform across expts
2308     o changed configuration of tidal_basin_2d expt
2309     o added pkg/debug functions for tracing code in fatal crashes
2310     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2311     o new fn in pkg/monitor to stop model if solution grows too big
2312     o removed lots of single quotes from comments
2313    
2314    checkpoint50e_post
2315    o make KPP work with PTRACERS
2316     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2317       nearly a copy of kpp_transport_s
2318     - there is no analogue to SurfaceTendencyS, so I have to use
2319       gPtr(of the surface layer) instead
2320    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2321    checkpoint50e_pre
2322    
2323    checkpoint50d_post
2324    o change kpp output from multiple-record state files to single-record state
2325      files analogous to write_state.F
2326    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2327      analogous to the cg2d-related output.
2328    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2329      so that writing to internal file fn (with length 512) fails.
2330    checkpoint50d_pre
2331    
2332    checkpoint50c_post
2333    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2334    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2335    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2336    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2337    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2338    
2339    checkpoint50c_pre
2340    Merging from release1_p13:
2341    o bug fix for pkg/seaice dynamic solver
2342    o Added SEAICE_initialHEFF to pkg/seaice
2343    
2344    checkpoint50b_post
2345    o store u*,v* in gU,V instead of in guNm1,gvNm1
2346    o in order to put the momForcing out of the Adams-Bashforth:
2347      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2348      to timestep.F
2349    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2350    o re-generate output for highly sensitive test-exp:
2351       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2352    
2353    checkpoint50b_pre
2354    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2355    o corrected CPP option mismatch in exf_Bulk... functions for case
2356      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2357    
2358    checkpoint50a_post
2359    o Bug fix for merging between c50 and KPP.
2360      ikey was passed from thermodynamics to kpp_calc via
2361      common block rather than being recomputed in kpp_calc,
2362      in contradiction with new key itdkey.
2363      New key ikppkey created, and tamc.h headers updated.
2364    
2365    checkpoint50
2366    - 2nd step of merge with ecco-branch:
2367      merge changes in ecco-branch back into main trunk
2368    - bug fix in find_alpha
2369    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2370    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2371    - merged some sliced AD support routines
2372    
2373    checkpoint49
2374    merged from ecco-branch:
2375    o exf:
2376      - Enable initialisation of forcing fields to constant
2377        (runtime) values.
2378      - in exf_getffields.F
2379        Reduce i-/j-loop to interior domain, discarding overlaps.
2380        That also fixes wrong TAF-key computations for key_1, key_2
2381        with bulf formulae.
2382      - exf_init.F modify #ifdef for exf_init_evap
2383      - exf_getffieldrec.F, ctrl_getrec.F
2384        The following INT-usages are not safe:
2385          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2386          fldcount = int(fldsecs/fldperiod) + 1
2387        and were modified.
2388    o autodiff: checkpoint_lev...
2389      - updated storing for bulk formulae (some arrays were missing)
2390      - added state for seaice package
2391      - synchronized with main branch
2392    o DIVA:
2393      Modif.s in
2394      - the_main_loop.F
2395      - the_model_main.F
2396      and added cost_final_restore.F cost_final_store.F
2397      o With these changes, it is possible to fully separate
2398        the first forward run to compute the cost function (mdthe_main_loop)
2399        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2400        into separate model executions.
2401        This enables better tuning of DIVA to given queue sizes.
2402      o Loss of cost function value in consecutive DIVA runs is
2403        fixed by storing to 'costfinal' file.
2404      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2405        beginning/end of adjoint integration is accounted for.
2406      The current changes apply to TAF-1.4.26.
2407      TAF has one remaining bug, requiring one manual change
2408      (see MITgcm manual).
2409    o cal: synchronized between MAIN and ecco-branch
2410    
2411    checkpoint48i_post
2412    o Changes to restore differentiability of code w.r.t. previous tag
2413      (mostly adding new routines to make list and replacing
2414      pressure by totPhiHyd).
2415    o Updated and merged grdchk package
2416      - has both ADM and TLM checks
2417      - works for single- and multi-proc.
2418      - output cleaned
2419      - worked successfully for parallel DIVA
2420    o genmake:
2421      - Adding -platform=SP4
2422      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2423    o Modif. for DIVA:
2424      ctrl_unpack should not be called in intermediate DIVA interval.
2425      (similar thing would apply for active files such as
2426      tbar, sbar, psbar, which should not be reinitialised;
2427      only relevant for ecco-branch)
2428    
2429    checkpoint48h_post
2430    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2431    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2432    o Added SEAICE_initialHEFF to pkg/seaice
2433    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2434    
2435    checkpoint48g_post
2436    --- EOS:
2437    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2438      store total Potential in totPhyHyd for diagnostics & EOS.
2439    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2440    --- Pressure/geopotential gradient:
2441    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2442    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2443      ( changes results of global_ocean_pressure )
2444    o NLFS + z-coord.: add eta*Rho' contribution.
2445    o accurate phiHyd when using interface-W at the middle between 2 centers
2446     ( changes results of ideal_2D_oce )
2447    o includes r* 2nd term in potential gradient.
2448    
2449    checkpoint48f_post
2450    Merging from release1_p12:
2451    o Modifications for using pkg/exf with pkg/seaice
2452      - improved description of the various forcing configurations
2453      - added basic radiation bulk formulae to pkg/exf
2454      - units/sign fix for evap computation in exf_getffields.F
2455      - updated verification/global_with_exf/results/output.txt
2456    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2457      (SBO) core products, including oceanic mass, center-of-mass,
2458      angular, and bottom pressure (see pkg/sbo/README.sbo).
2459    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2460      to avoid negative values in shallow regions.
2461      - updated verification/natl_box/results/output.txt
2462      - updated verification/lab_sea/results/output.txt
2463    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2464    o Added useSingleCpuIO option (see PARAMS.h).
2465    o Updated useSingleCpuIO option in mdsio_writefield.F to
2466      work with multi-field files, e.g., for single-file pickup.
2467    o pkg/seaice:
2468      - bug fix in growth.F: QNET for no shortwave case
2469      - added HeffFile for specifying initial sea-ice thickness
2470      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2471    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2472      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2473    o pkg/seaice:
2474      - adjoint-friendly modifications
2475      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2476    
2477    checkpoint48e_post
2478    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2479    o dynamics: change definition of computational domain & adapt mom_fluxform
2480      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2481    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2482        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2483        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2484        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2485        inverted_barometer solid-body.cs-32x32x1
2486      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2487    
2488    checkpoint48d_post
2489    o in preparation for r*:
2490     a) use pre-computed gradient of hydrostatic potential:
2491        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2492     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2493        => affects results of glob_oce_pressure (different truncation error)  
2494      update output.txt of ideal_2D_oce & global_ocean_pressure
2495    
2496    checkpoint48d_pre
2497    o in preparation for r*:
2498      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2499      pass the 2 comp. of the grad. as arguments to momentum S/R.
2500      but for the moment, only used if it does not change the results.
2501    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2502    
2503    checkpoint48c_post
2504    Modifications in treatment of initial flux forcing controls
2505    to avoid extra storing of flux fields.
2506    
2507    checkpoint48c_pre
2508    o Added tidal_basin_2d experiment (currently 1D!)
2509    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2510    
2511    checkpoint48b_post
2512    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2513     (modification to pressure gradient not yet implemented)
2514    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2515      (for U & V) that are used for vertical advection of momentum.
2516    
2517    checkpoint48a_post
2518    o In preparation for r*, use temp. array to compute vertical transport
2519       in flux-form momentum pkg. => change results of few test-exp.
2520      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2521                        lab_sea, natl_box & plume_on_slope
2522    
2523    checkpoint48
2524    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2525    
2526    checkpoint47j_post
2527    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2528    o moved adexch from forward_step to addummy_in_stepping
2529    o added exch in ctrl_map_...
2530    o aveFreq.=0. at end of cost_final to avoid overwrite in
2531      reverse checkpointing loop
2532    o Yet more changes in gmredi:
2533      * adgmredi_calc_tensor
2534        avoiding all recomputation of gmredi_slope_limit
2535      * adgmredi_x/y/rtransport
2536        added flag for excessive storing to avoid recomp. of
2537        u/v/rtans, dTdx/y/z
2538        -> this is not really necessary and very memory-consuming
2539      * adgmredi_slope_psi:
2540        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2541      * gmredi_slope_limit
2542        re-activated full calculation of taperfct for case 'ac02'
2543    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2544    
2545    checkpoint47i_post
2546    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2547    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2548      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2549    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2550    o gmredi: fix few bugs.
2551    
2552    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2553    This will be a good checkpoint to plug into the ecco-branch.
2554    o few modif.'s to get latest version adjointed
2555      (mainly kick out code in ini_linear_phisurf)
2556    o modif's to run adjoint with exactConserv
2557    o case GM_BOLUS_ADVEC should be cleaned
2558      S/R gmredi_slope_psi should be cleaned
2559    o verification/carbon now has exactConserv=.TRUE.
2560    
2561    checkpoint47g_post
2562    o time-average AIM output: becomes independent from statvars time-average
2563      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2564    o After TAF bug fix:
2565      Tested adjoint of gmredi package.
2566      Tests were done with checkpoint47 rather than with latest
2567      checkpoint47f_post since the latter is broken for the adjoint
2568      verification/carbon/ contains both ADM and TLM gradient checks.
2569    Here they are, before they get changed/lost/stolen.
2570    Mostly modif.'s to fix numerical sensitivities.
2571    Gradient checks OK for
2572    - GM_taper_scheme:
2573      * clipping
2574      * ac02
2575      * linear
2576      * glw91
2577      * dm95
2578      * ldd97
2579    - GMREDI_OPTIONS:
2580      * GM_VISBECK_VARIABLE_K
2581      * GM_NON_UNITY_DIAGONAL
2582      * GM_EXTRA_DIAGONAL
2583      * GM_BOLUS_ADVEC
2584    in conjunction with data.gmredi parameters to be checked in
2585    in a few minutes under verification/carbon/code/
2586    
2587    checkpoint47f_post
2588    Merging from release1_p10:
2589    o modifications for using pkg/exf with pkg/seaice
2590      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2591        and SEAICE_EXTERNAL_FLUXES
2592      - pkg/exf CPP options EXF_READ_EVAP and
2593        EXF_NO_BULK_COMPUTATIONS
2594      - usage examples are Experiments 8 and 9 in
2595        verification/lab_sea/README
2596      - verification/lab_sea default experiment now uses
2597        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2598    
2599    checkpoint47e_post
2600    o created a tag prior to creating a branch
2601    
2602    checkpoint47d_post
2603    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2604      at the bottom boundary had an erroneous half slip boundary condition
2605    o added bottom drag and no slip boundary condition capabilities to
2606      oceanic pressure coordinates code
2607    o added new verification experiment global_ocean_pressure, this experiment is
2608      also described in the tutorial section of the manual
2609    checkpoint47d_pre
2610    
2611    checkpoint47c_post
2612    o Added a verification experiment for a global cubed-sphere ocean run
2613      -  verification/global_ocean.cubed32x32x30
2614      -  uses pkg/therm_seaice and pkg/bulk_forcing
2615    
2616    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2617    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2618      when using P-coordinate; only implemented for atmospheric config.
2619    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2620      NOTES: requires option NONLIN_FRSURF to be "#define".
2621    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2622    
2623    checkpoint47b_post
2624    Merging from release1_p9:
2625    o pkg/seaice
2626      - removed GOTO's and added taf directives
2627      - double precision constants to reduce the g77 (Linux)
2628        to F77 (SGI) differences reported in release1_p8
2629    o tools/genmake
2630      - added SGI options
2631    o verification/testscript
2632      - updated to that of checkpoint47a_post
2633    o verification/global_ocean.90x40x15/input/eedata
2634      - modified for SGI f77 compatibility
2635    o verification/lab_sea
2636      - added description of sea-ice model
2637      - added missing matlab routines
2638      - added test of thermodynamics parallelization
2639    
2640    checkpoint47a_post
2641    o new pkg: aim_v23
2642     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2643       for now, keep the same surface forcing as before.
2644     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2645     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2646     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2647    o add diagnostic of surface correction term in monitor output
2648    
2649    o bulk_force and therm_seaice
2650    - Two packages:  bulk_force (Bulk forcing)
2651      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2652    - Earlier integration from Stephaine Dutkiewicz
2653      and Patrick Heimbach.
2654    - Two ifdef statements for compile time,
2655       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2656    
2657    checkpoint47
2658    differentiable version of checkpoint46n_post
2659    o bug fix in quasihydrostaticterms
2660    o * "clean" adjoint code (in terms of extensive recomputations)
2661        can now be obtained for all GMREDI options (i.e. for
2662        - GM_VISBECK_VARIABLE_K
2663        - GM_NON_UNITY_DIAGONAL
2664        - GM_EXTRA_DIAGONAL
2665        - GM_BOLUS_ADVEC )
2666      * However, wrong gradient check problem remains unsolved.
2667      * New CPP options have been introduced for different
2668        tapering schemes
2669    o external_fields_load now part of differentiation list
2670    o pressure needs multiple storing;
2671      would be nice to have store_pressure at beginning or
2672      end of forward_step, e.g. by having phiHyd global (5-dim.)
2673      (NB: pressure is needed for certain cases in find_rho,
2674      which is also invoked through convective_adjustment).
2675    o recomputations in find_rho for cases
2676     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2677    o #define ATMOSPHERIC_LOADING should be differentiable
2678    o ini_forcing shifted to begining of initialise_varia
2679    o Incorporating QNVS line search routines into MITgcm
2680      (this is separate code, and therefore not under pkg)
2681      lsopt/, optim/
2682    o Updated verification/carbon/
2683      - #define GM_VISBECK_VARIABLE_K
2684      - GM_taper_scheme    = 'ldd97'    
2685    
2686    checkpoint46n_post
2687    Merging from release1_p8:
2688    o verification/natl_box:
2689      updating new external_fields_load routine
2690    o New package: pkg/seaice
2691      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2692      The sea-ice code is based on Hibler (1979-1980).
2693      Two sea-ice dynamic solvers, ADI and LSR, are included.
2694      In addition to computing prognostic sea-ice variables and diagnosing
2695      the forcing/external data fields that drive the ocean model,
2696      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2697      The implied surface heat flux is then stored in variable
2698      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2699      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2700      non-local transport term.  Because this call precedes model
2701      thermodynamics, temperature under sea-ice may not be "exactly" at
2702      the freezing point by the time theta is dumped or time-averaged.
2703      N.B.: fairly large differences in accuracy occur across
2704            different platforms/compilers; comparison between
2705            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2706            generated output gives:
2707       T           S           U           V
2708      C D M    c        m  s        m  s        m  s        m  s
2709      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2710      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2711      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2712    
2713      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2714    o GAD:
2715      - generated new common blocks to account for call of
2716        same gad routines with differing traceridentities
2717        (needed to modify tracerIdentity indices in GAD.h)
2718      - generated separate common blocks for case useCubedSphereExchange
2719        (Department of Futurology)
2720      - parameter lists to gmredi_?transport: added tracerIdentity
2721      - added new key indices to tamc.h
2722    o external_fields_load:
2723      - added this routine to TAF list
2724      - needed to make some common blocks global and additional storing
2725        along the same lines as exf package (checkpoint_lev?_directives.h)
2726    o exf:
2727      updated external forcing package
2728      - bug fixes carried over from ecco-branch
2729        (missing OBCS_OPTIONS.h in two routines)
2730      - enable easy to use "no forcing".
2731      - added exf I/O for atmospheric loading
2732      - added exf I/O for runoff data
2733      - transfered scaling between exf <-> MITgcm to exf namelist
2734    o Adding new verification experiment global_with_exf.
2735      This verification experiment is almost identical to the
2736      global_ocean.90x40x15 experiment, except that it uses
2737      the exf (and cal) package instead of the
2738      external_fields_load routine (cf README file).
2739    
2740    checkpoint46m_post
2741    o modified testscript to return -- when there are no lines of "%MON" output
2742    o added new flag "quasiHydrostatic" for QH mode
2743      and new routine quasihydrostaticterms()
2744    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2745      New routine: mom_u_coriolis_nh()
2746    o fixed sign of non-hydrostatic metric terms in u and v equations.
2747      Depend on correct sign of gravitySign.
2748    o added work.pc* to .cvsignore in aim directories using ifc
2749    o introduced flag for controllin non-hydrostatic metric terms
2750    o removed gravitySign from PARM04
2751    o switched to g77/ifc from pgf77 in aim experiments
2752    
2753    checkpoint46l_post
2754    o made convective adjustment work with pressure coordinates:
2755     - changed the direction of k-loop in convective_adjustment.F for the
2756       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
2757     - adjusted the reference pressure k-index in convective_adjustment.F
2758     - adjusted the convection condition in convect.F (in analogy to
2759       calc_ivdc.F)
2760     - convective_adjustment no longer computes anything on the halos
2761     - removed the warnings about negative salinity from find_rho.F and
2762       find_alpha.F; instead the new routine look_for_neg_salinity, called
2763       at the beginning of find_rho, find_alpha, and find_beta, does a
2764       check of the entire slice, if CPP-option
2765       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
2766    checkpoint46l_pre
2767    
2768    checkpoint46k_post
2769    o fixed the verification/global_ocean.90x40x15 experiment:
2770     - new bathymetry (the world according to A., JMC, and M.)
2771     - new initial fields and forcing fields (*.bin files)
2772     - new POLY3.COEFFS (for the next release one should switch to a full
2773       equation of state: JMD95P or MDJWF)
2774     - fixed several errors and redundancies in the data file
2775     - experiment uses looped cells
2776     - added matlab directory with diagnostic scripts for plotting of output
2777    
2778    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
2779     - read AIM physics parameters from a file (data.aimphys)
2780     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
2781    
2782    checkpoint46j_post
2783    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
2784    o move wVel computation at the end of the time step, in S/R integr_continuity
2785    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
2786    o update timeave pkg for wVel diagnostic.
2787    checkpoint46j_pre
2788    
2789    checkpoint46i_post
2790    o Clean up AIM package (and keep the results unchanged):
2791      include CPP_OPTION and use IMPLICT NONE in all routines ;
2792      declare all the variables _RL ; use _d 0 for all numerical constants.
2793      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
2794    
2795    checkpoint46h_post
2796    o cleaned up the use of rhoNil and rhoConst.
2797      - rhoNil should only appear in the LINEAR equation of state, everywhere
2798        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
2799        and the dynamical equations are all divided by rhoConst
2800    o introduced new parameter rhoConstFresh, a reference density of fresh
2801      water, to remove the fresh water flux's dependence on rhoNil. The default
2802      value is 999.8 kg/m^3
2803    o cleanup up external_forcing.F and external_forcing_surf.F
2804      - can now be used by both OCEANIC and OCEANICP
2805    checkpoint46h_pre
2806    
2807     Added code to convert surface volume flux (fresh water) into
2808     a mass flux when using P coordinates in the ocean (OCEANICP).
2809     Note: It assumes you have set rho0=rhoConst=density of fresh water.
2810    
2811    checkpoint46g_post
2812    o Include a new diagnostic variable phiHydLow for the ocean model
2813      - in z-coordinates, it is the bottom pressure anomaly
2814      - in p-coordinates, it is the sea surface elevation
2815      - in both cases, these variable have global drift, reflecting the mass
2816        drift in z-coordinates and the volume drift in p-coordinates
2817      - included time averaging for phiHydLow, be aware of the drift!
2818    o depth-dependent computation of Bo_surf for pressure coordinates
2819      in the ocean (buoyancyRelation='OCEANICP')
2820      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
2821        Theta, Salinity, and Pressure in the parameter list. This routine is
2822        presently contained in find_rho.F. This routine does not give the
2823        correct density for 'POLY3', which would be a z-dependent reference
2824        density.
2825    o cleaned up find_rho
2826      - removed obsolete 'eqn' from the parameter list.
2827    o added two new verification experiments: gop and goz
2828      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
2829    checkpoint46g_pre
2830    
2831    checkpoint46f_post
2832    o Enable tangent linear (forward mode) gradient checks:
2833      - extended active file handling to g_... files
2834      - added TANGENT_SIMULATION to theSimulationMode
2835      - extended grdchk package accordingly
2836    o added tangent linear setup in verification/carbon/code_ftl
2837    o added adjoint setup in verification/front_relax/code_ad
2838    
2839    checkpoint46e_post
2840    o Added new equation of state -> MDJWF
2841      - EOS of McDougall et al., 2002, JAOT, submitted
2842      - caveat: the equation of state is only valid for a smaller (more
2843        realistic?) range of values than JMD95P/Z and UNESCO
2844      - added masks to the calculation of pressure in store_pressure
2845      - added more check values for density in check_eos (ini_eos.F), some of
2846        the old check values are out of the range of the MDJWF-eos, so don't
2847        expect perfect matches for those
2848    checkpoint46e_pre
2849    
2850    checkpoint46d_post
2851    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
2852      'OCEANICP', also initialised field pressure correctly in ini_eos in the
2853      case of pressure coordinates. eosType='JMD95Z' in
2854      combination with buoyancyRelation='OCEANICP' now causes an error.
2855    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2856      in find_alpha/beta.
2857    checkpoint46d_pre
2858    
2859    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2860      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
2861    
2862    checkpoint46c_post
2863    o Changes necessary for ocean in p-coordinates
2864     -  Added new buoyancy relation = 'OCEANICP'
2865     -  Added new parameters = gravitySign (this used to be contained inside
2866        the factor dRdZ which I added when we first switched to R coordinates).
2867     X GM/Redi is not compatible (yet)
2868     X bottom drag and no-slip need to be debugged.
2869    checkpoint46c_pre
2870    
2871    checkpoint46b_post
2872    o Added new equation of state -> JMD95Z and JMD95P
2873      - EOS of Jackett and McDougall, 1995, JAOT
2874      - moved all EOS parameters into EOS.h
2875      - new routines ini_eos.F, store_pressure.F
2876    o Added UNESCO EOS, but not recommended because it requires
2877      in-situ temperature (see JMD95)
2878    o Modified formatting for knudsen2.f in utils/knudsen2 and added
2879      unesco.f to be used with POLY3
2880    checkpoint46b_pre
2881    
2882    checkpoint46a_post
2883    o Added (atmospheric) pressure loading
2884      - new field in FFIELDS.h, etc...
2885      - new cpp flag ATMOSPHERIC_LOADING
2886    o Changed hFacC to _hFacC in calc_phi_hyd.F
2887    o Added SHORTWAVE_HEATING to some files for consistency
2888    checkpoint46a_pre
2889    
2890    checkpoint46
2891    further merges from release1_p5
2892    o new ctrl package
2893      - adopted from ECCO environment to enable optimization
2894      - added Eliassen Palm fluxes to controls
2895    o added Eliassen Palm flux controls to gradient check package
2896    o cost package
2897      - Compatible with new ctrl package
2898      - added Eliassen Palm cost hooks
2899      - modif's of existing cost functions
2900    o Adjoint-related bug fixes in kpp:
2901      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
2902      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
2903    o autodiff package
2904      - flow directives:
2905        + new for S/R do_the_model_io
2906        + enhanced for S/R checkpoint
2907        + new gmredi.flow
2908      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
2909        disable adcommon.h/g_common.h by default.
2910      - fixed problem for adjoint of global_max
2911    o modified verification/carbon/
2912    o New setup for adjoint of global_ocean
2913    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
2914    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
2915    o incorporated hooks for sponge layer code (external_forcing.F)
2916    
2917    checkpoint45d_post
2918    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
2919    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
2920      (affects plume_on_slope "cg2d" output)
2921    o add new parameter deltaTfreesurf for free-surface time stepping
2922    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
2923    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
2924    o change phiMin in exp1 (to agree with documentation)
2925    o add new flags:
2926     - T,S forcing inside/outside Adams-Bashforth
2927     - turn off temp,salt advection and/or forcing
2928     - for each tracer, define internal flag for multiDimAdvection & A-B
2929    o monitor: change definition of KE to check conservation of Energy
2930    
2931    checkpoint45c_post
2932    o Removed f90 comments ("!")
2933    o Modified initialisations to enable exf package for MITgcm
2934      (without invoking ECCO_PACKAGE).
2935    o modifications to gradient check package (Martin Losch)
2936      - enable centered differences
2937      - modified format of standard output
2938    
2939    checkpoint45b_post
2940    o cleaned exchange calls in cg2d
2941    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
2942    o included CPP option SINGLE_LAYER_MODE in thermodynamics
2943      to configure barotropic setup (Martin Losch)
2944    o moved some initialisations within bi,bj loop in dynamics
2945      (TAF flow dependency)
2946    o in initialise_varia, moved call packages_init_variables
2947      before convective_adjustment_init
2948      (corresponding adjustment of TAF tape initialisation).
2949    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
2950    
2951    checkpoint45a_post
2952    o compute Rho over the whole domain (extend iMin,jMin indices)
2953    o specific exchange for X-slice domain (case Ny=1)
2954    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
2955    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
2956    
2957    checkpoint44h_post = checkpoint45
2958    o Fix to restore differentiability:
2959      place at which packages_init_variables is called in
2960      initialise_varia is crucial for reverse control flow.
2961    o modifications in GMRedi to enable stable adjoint
2962      (corresponding modif's in thermodynamics, dynamics)
2963    o added missing hook for sponge layer code in external_forcing
2964    o modified test cost functions
2965    o storing in gad_advection (plus removal of write(0,*)!
2966    o missing headers TR1.h added in convective_adjustment routines
2967    o errorMessageUnit set non-equal zero in eeboot
2968      (conflict on some platforms, e.g. IBM SP3)
2969    o modified carbon verif.
2970    
2971    checkpoint44h_pre
2972    o vertical grid option: allow to put the Interface at the middle between
2973      2 cell-centers ; replace delZ in pkg/kpp by drF.
2974    o GM Advective form: Tracers are advected using the residual transport (=
2975      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
2976    
2977    checkpoint44g_post
2978    o fix surface correction term in multiDimAdvection (affects plume_on_slope
2979      results) ; ifdef missing in thermodynamics.F
2980    
2981    checkpoint44f_pre,checkpoint44f_post
2982    o added PTRACERS package
2983      This allows an arbitrary number of passive tracers to be integrated
2984      forward simultaneously with the dynamicaly model.
2985      + Implemented so far:
2986        - basic forward algorithm (time-stepping, advection, diffusion, convection)
2987        - I/O and checkpointing
2988        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
2989      + Not implemented so far:
2990        - KPP
2991        - OBCS
2992      + No specific example supplied (yet) but global_ocean.90x40x15 has the
2993        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
2994        line in data.pkg.
2995      + This package is disabled by default since it increases storage.
2996    
2997    
2998    o testscript: added -cleanup option
2999    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
3000                 b) enable to filter 2D fields.
3001    
3002    checkpoint44e_pre,post
3003    o re-wrote convective adjustment to use pre-calculated weights
3004      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
3005      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
3006      Original calls to convect() still in place.
3007    
3008    chkpt44d_pre,post
3009    o added missing EXCLUDE_MONITOR flags
3010    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
3011      (incompatible typ in MIN/MAX expressions caused problems
3012      on IBM SP3)
3013    o in genmake added variable MAKEDEPEND
3014      plus resetting for case SunOS
3015    o added timer_stats.c routine for IBM SP3
3016    o removed variables in dynamics
3017    !!! I forgot to create tag chkpt44d_pre !!!
3018    !!! But chkpt44d_pre = chkpt44c_post    !!!
3019    
3020    o real fresh water flux implemented with non-linear free-surface.
3021    
3022    chkpt44c_pre,post
3023    o few fix (mask in shap_s2, EmPmR in external_field_load,
3024      USE_NATURAL_BCS in solve_for_P);
3025    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
3026    
3027    checkpoint44b_pre/_post
3028    o merge of relevant stuff from the ecco-branch:
3029      - genmake: removed $S64 overwrite for case SunOS
3030      - pkg/exf: update and corrections for field swapping and obcs
3031      - pkg/ecco: parameter lists for the_model_main, the_main_loop
3032                  harmonized between ECCO and MITgcm
3033      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
3034                      updated checkpointing_lev... lists for obcs
3035      - model/src: minor changes in forward_step, plot_field
3036                   added directive for divided adjoint in the_main_loop
3037      - pkg/mdsio: added mdsio_gl_slice
3038    
3039    o check parameters & config (chkpt44a_pre,post)
3040    o OBC and NonLin_FrSurf.
3041    
3042    checkpoint44
3043    o fix bug in mom_vi_del2uv
3044    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
3045    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
3046    o update AIM experiments (NCEP input files)
3047    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
3048    o added some stuff for AD
3049    
3050    checkpoint43
3051    o added two new advection tests
3052    o added global 4x4 degree ocean test
3053    o added test of H&S94 with free surface on cube
3054    o some final mods for gradient check, adjoint,...
3055    
3056    checkpoint42
3057      Fixed AD-related problems:
3058    o Store directives up-to-date with re-arranged Adams-Bashforth
3059      (mainly thermodynamics.F)
3060    o New store directives for multi-dim. advection schemes
3061      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
3062      * new common block and key passkey
3063      (mainly gad_advection.F)
3064    o Modified store directives for split of dynamics/thermodynamics
3065      for the case ALLOW_KPP
3066    o Cleaned argument list for timestep_tracer.F
3067    
3068    checkpoint41
3069    o re-formatted/added comments in prologues of key subroutines
3070      to work with protex
3071    
3072    checkpoint40
3073    o moved calc_gs, calc_gt and calc_tr1 back to model/src
3074    o added FLT (floats) package from Arne along with demo. experiment
3075    o re-arranged Adams-Bashforth scheme for tracers to allow easier
3076      implementation of forward-in-time forcing terms
3077    o more mods for non-linear free-surface including new variable
3078    o modified multi-dim method to work on cube
3079    o bug fix in KPP (from DM)
3080    
3081    checkpoint40pre9
3082    o added DST advection schemes
3083    o fix MPI bug on SGI's
3084    o modifications for non-linear free-surface
3085    o fixed conditionals for fixed flow/passive tracer only mode
3086    o added tension/strain form of stress tensor
3087    o changes to commenting of arguments for TAF/TAMC
3088    o added/updated many matlab scripts
3089    o added multi-dimensional advection method for tracers
3090      
3091    checkpoint40pre8
3092    o new package rw/
3093      Added method for dumping intermediate local arrays:
3094      mdsio_writetile - same as mdsio_writefield except works from inside
3095                        bi,bj loop
3096      mdsio_writelocal - same as mdsio_writetile except works for local
3097                         arrays
3098      write_local_r? - higher-level wrapper for mdsio_writelocal
3099      Controlled by diagFreq. Defaults to zero (ie. no dumps)
3100      Example given at end of mom_vecinv.F that dumps some local arrays.
3101    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
3102      control flux-form versus vector invariant code.
3103      Switch is runtime flag vectorInvariantMomentum (defaults to false)
3104      or genmake -DISABLE ...
3105    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
3106      (additional storing is now needed for case vecinv;
3107      currently nothing implemented to switch this storing off
3108      in case fluxform is used since no CPP flag available).
3109    
3110    checkpoint40pre7
3111    o bug fix in dynamics.F
3112      calc_viscosity called before k=1,Nr loop.
3113    o added some #ifdef's ALLOW_PASSIVE_TRACER
3114    o cleaned initialisations in ctrl_map_ini
3115      related to TAF
3116    
3117    checkpoint40pre6
3118    o split dynamics into thermodynamics & dynamics
3119    o corresponding split of calc_diffusivity into
3120      calc_diffusivity, calc_viscosity
3121      (kpp_calc_diff, kpp_calc_visc).
3122    o Added diffkr, kapgm to control variables
3123    o bug fix in gmredi_slope_limit for ldd97
3124    
3125    checkpoint40pre5
3126    o proper initialization of Adams-Bashforth time stepping
3127      + uses forward step for very first step of model (iter=0)
3128    o re-generated *all* output since almost all output is modified by this
3129      change (sorry but we've been putting this one off for about 2 years)
3130      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
3131        *not* regenerated since they are already out of date and I don't
3132        want to create the impression that they are suddenly working.
3133    o removed KAP stuff for DEC's
3134    o modified/added many .cvsignore files in */code and */input
3135    o added new expt "solid-body.cs-32x32x1"
3136      + this uses an alternative form of ini_curvilinear_grid.F which
3137        is not necessarily any better than the current one...
3138    
3139    checkpoint40pre4
3140    o added re-initialisations of utrans,vtrans,rtrans in
3141      calc_common_factors which are crucial for TAF.
3142    o extended iMin,jMin range for calc_common_factors,
3143      calc_diffusivity
3144    o added option ALLOW_PASSIVE_TRACER
3145    o a few minor updates and fixes
3146    
3147    checkpoint40pre3
3148    o created calc_gtr1.F for gad package
3149    o split the_main_loop and re-introduced forward_step
3150    o some recomputations of nIter0 for TAMC
3151    
3152    checkpoint40pre2
3153    o Updated to latest branch of AJA, JMC
3154    o Added gradient check package
3155    o Added routines for passive tracer handling
3156    o Added carbon sequestration sensitivity experiment
3157    
3158    checkpoint39
3159     o Modifications and fixes to support TAMC
3160       (mainly missing or wrong directives)
3161     o Corrected common blocks when fooling TAMC to produce adjoint I/O
3162       in addummy_in_stepping
3163     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
3164     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
3165     o Included following packages:
3166       cal: calendar
3167       exf: external forcing
3168       ecco: essential routines to control use of cal, exf
3169             (NB: this is not the full ECCO environment)
3170     o disabled some packages by default in genmake
3171    
3172    checkpoint38
3173     o see notes_c37_adj.txt
3174     o corrected wrong layer index in external_forcing_t
3175     o replaced the_main_loop/forward_step by the_main_loop
3176     o removed forceoutput from write_state
3177       (replaced criteria for initial/final state)
3178     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
3179    
3180    checkpoint37
3181     o mdsio.F routine split and packaged in pkg/mdsio
3182       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
3183        used unless genmake -disable=mdsio)
3184     o allow a more precise surface-geopotential gradient for the atmosphere
3185       taking into account the change in space of Alpha (=1/rho) at the surface.
3186     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
3187       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
3188     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
3189       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
3190       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
3191     o Time-Average diagnostics defined as a pseudo package "timeave".
3192     o pickup files : old pickup (before c35) did not work with new code (c35
3193       and after) unless activating 2 commented lines in initialise-varia.
3194     o Non-Hydrostatic pickup file Pb fixed.
3195     o bug with Rigid-lid version (since c35) fixed.  
3196    
3197    checkpoint36
3198     o implement Crank-Nickelson barotropic time-stepping
3199     o recover Time-Average diagnostics
3200     o fix Pb in checkpoint (PR#19)
3201     o AIM become a standard package ; clean unused CPP_kees
3202    
3203    checkpoint35
3204     o subtantial rewrite of dynamics.f
3205     o allows staggered time-stepping
3206     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
3207     o added bottom drag (linear + quadratic)
3208    
3209    checkpoint34
3210     o Modified exchange routines for correct reverse simulation.
3211     o Added verification output to comply with bug fix in impldiff.F
3212       as of c33 (exp2, natl_box).
3213     o Corrected store directives in dynamics.F
3214     o Corrected array boundaries in impldiff.F
3215     o Corrected array dimensions in gmredi.
3216       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
3217     o Added routine GLOBAL_SUM_INT to global_sum.F
3218     o Added mdsio_gl.F for ECCO purposes.
3219    
3220  checkpoint33  checkpoint33
3221   o Fixed bug in lower BC in impldiff.F   o Fixed bug in lower BC in impldiff.F
3222   o Fixed confusion about units of forcing arrays in FFIELDS.h   o Fixed confusion about units of forcing arrays in FFIELDS.h

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