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revision 1.16 by cnh, Tue Nov 3 15:31:08 1998 UTC revision 1.818 by jmc, Wed May 16 13:39:57 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    checkpoint59b
8    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
9      - export/import (between ocean & coupler) fields needed for ocean DIC.
10    o pkg/seaice:
11      - get rid of three more exchanges seaice_calc_viscosities (required
12        different loop boundaries in seaice_lsr and seaice_ocean_stress)
13      - bug fix in seaice_ocean_stress (update of lab_sea required)
14      - reduce loop boundaries to necessary minimum also in seaice_evp
15      - go back to the old way of computing deltaC/Z as the adjoint likes that
16        better
17    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
18      passive tracer to an Age Tracer) + update output.txt
19    o pkg/exf:
20      - implement A-grid / C-grid selection for wind-stress input files.
21      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
22      for now, in exf_bulk_largeyeager04.F only :
23      - change implementation for case where windspeed + 2. components wind-stress
24        are read-in. AND use rhoConstFresh to convert evap.
25    o pkg/seaice:
26      - use correct EXCH_UV for wind-forcing (on A-grid).
27      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
28        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
29    o pkg/exf:
30      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
31      EXF_INTERPOLATION:
32      - merge global_with_exf/code version of exf_interp_read.F
33        to the main code ;
34      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
35        reading the file ; Important: This options needs to be defined to recover
36        previous code.
37        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
38      - no longer loose real*8 precision along the way when using exf_iprec=64.
39    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
40      - change discretisation of evp-solver in order to avoid another exchange
41        (changes lab_sea) and clean up a little
42      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
43        help the adjoint (this also changes the results slightly)
44      - add a few "_d 0" where they had been missing in seaice_evp.F
45      - cleaning up: remove unused seaice_calc_rhs.F
46    o pkg/exf: some cleaning-up:
47      - change various "constants" into runtime parameters
48      - cleaned-up Large&Yeager04 routine which should eventually
49        replace exf_bulkformulae.F (changed names of S/R and CPP)
50        and merged various ALLOW_ATM_WIND options
51     only used with thsice pkg (in thsice_get_exf.F):
52      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
53        which are used when useStabilityFct_overIce=TRUE (= the default)
54      - change default values of ice & snow emissivity and scale downward LW
55        by ice & snow emissivity.
56    o pkg/thsice:
57     fix few little problems, in thsice_calc_thickn.F:
58      - growth vertically (and not laterally) if iceFrac == iceMaskMax
59      - melt laterally only if hIce < hThinIce (as the comments say)
60      and in thsice_extend.F:
61      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
62      - start to form ice as soon as the minimum ice-volume is reachable.
63     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
64      and cpl_aim+ocn
65    o pkg/kpp
66     - move computation of surface related input fields to KPP into a new
67       subroutine kpp_forcing_surf.F
68     - remove wrong (within bi,bj loops) EXCH calls.
69     - little cleaning (add argument myThid in last position, cvs header ...)
70     - for now, fix conservation problem by exchanging KPPviscAz (may not
71       be the best fix)
72    o pkg/seaice
73     - check for inconsistent evp parameter/cpp-flag combination
74     - remove leftover errIO flat for obsolete name list error handling
75    o OpenAD
76     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
77    
78    checkpoint59a
79    o pkg/seaice: some parameter clarifications and a little bit of clean up
80    o pkg/thsice: rename run-time parameters:
81       himin       -> hIceMin
82       himin0      -> hThinIce
83       hihig       -> hThickIce
84       i0          -> i0swFrac
85       transCoef   -> bMeltCoef
86       frac_energy -> fracMelting
87      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
88       with default values (for now) that do not change the results.
89      remove old version of thsice vars advection in pkg/seaice.
90    o in FFIELDS.h:
91      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
92      - make pLoad & sIceLoad always available (but still only used if
93         ATMOSPHERIC_LOADING is #define).
94    o pkg/kpp: replaced _KPP_RL with _RL
95    o bug fixes for vertical diffusivity computations when both KPP and
96        3D diffusivity arrays are used.
97    o pkg/seaice: fix bug in evp solver, while doing that
98      - change (improve?) discretization of stress computations for both
99        cgrid-lsr and evp solver
100      - add a new routine to compute strain rates
101      - the above changes lab_sea results
102      - add no slip conditions for evp solver (off by default), lsr-version
103        may follow
104      - fix exchange for shear at Z-points (does not change lab_sea)
105      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
106        (to force the user to pick a time step since there is not "safe" way
107        of choosing it)
108      - add principal stress diagnostics
109      - rearrange fields for evp a little to avoid having to call a: too many
110        exchanges and b: exchanges for stress trensor components which we do
111        not have.
112      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
113        of evp, complete rewrite for lsr case (latter is does not yet work
114        in all cases)
115    o pkg/kpp: add code to have mixing in shelf ice caverns
116      - add myThid to all kpp routines (long overdue)
117    
118    checkpoint59
119    o pkg/exf:
120      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
121        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
122      - move exf header files from lower_case.h to UPPER_CASE.h ;
123        add missing cvs Header & Name
124      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
125      - add namelist param. selectStressGridPosition, exf_monFreq
126      - retire many _CLIM routines, and remove data.exf_clim
127        + params moved to data.exf
128        + climsst, climsss now handled by exf_set_gen, i.e.
129          climss?period=0 refers to constant field,
130          climss?period=-12 to monthly forcing
131      - split up namelists in data.exf
132    o pkg/seaice:
133      - remove seaice_exch and seaice_exch_uv
134      - remove superfluous exchange of theta
135      - add myThid to seaice_budget_ocean/ice
136      - add new interface for atmospheric wind forcing (C-grid only)
137        + new routine
138        + two new field (taux, tauy for stress over ice)
139        + removed one global field (DAIRN) for C-grid case only
140    o pkg/thsise
141      - 2nd set of modifs for thsice adjoint in conjunction with exf
142    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
143    
144    checkpoint58y_post
145    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
146      vertical diffusivity, similar to that in MOM4; turned on using
147      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
148      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
149    o Added capability for 3D specification of background vertical diffusion
150      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
151      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
152      "data" file that contains the 3D vertical diffusivity coefficients.
153    o ice dynamics (pkg/seaice) with thsice thermodynamics:
154      - add code within pkg thsice to advect & diffuse sea-ice fields
155      similar to (and will replace) what has been added in  seaice_advdiff.F,
156      but: - conserving Mass, Heat & Salt.
157           - better when using non-linear advection scheme (not yet fully tested)
158           - can also be used in atmospheric set-up (for now, only the diffusion).
159    
160    checkpoint58x_post
161    o IO option for global-file compact format:
162      - add options when generating topology (utils/exch2/matlab-topology-generator)
163      - add I/O capability (pkg/mdsio).
164      - adapt utils/matlab/rdmds.m to read this format.
165      for now long-line format not yet supported by pkg/mdsio (& exch2).
166    o shelfice: add a few diagnostics
167    
168    checkpoint58w_post
169    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
170      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
171      (and replace horiVertRatio in NH code).
172      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
173                         and tutorial_plume_on_slope (sensitive to truncation)
174    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
175      directly to drive seaice model (C-grid only)
176    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
177     - reintroduce computation of wind from stress,
178     - compute tau (in exf_bulkformulae.F) from windstress averaged to
179       mass points to avoid tau = 0
180     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
181    o rdmnc.m: make it work with "global" files created with gluemnc
182    o rdmnc.m : some improvements in dealing with singleton dimension
183      (tested on all testreport mnc output files).
184    o genmake2: disable pkg/profiles if netcdf test fails.
185    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
186    o move call to cal_readparms up to make calendar parameters/variable available
187      to all packages
188    
189    checkpoint58v_post
190    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
191      useDynP_inEos_Zc tested.
192    o pkg/exf: changes to properly interpolate/mask/scale initial fields
193    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
194      and portions thereof.  See read_cs.txt for description and examples.
195    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
196      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
197      following the great-circle arc between those 2 points.
198    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
199      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
200    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
201     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
202     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
203     - still needs work (not working with some options ; efficiency to improve)
204       and serious testing.
205     - use this scheme for temperature & salinity in 2 advection test exp.:
206       advect_xy & advect_xz, respectively.
207    
208    checkpoint58u_post
209    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
210    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
211    o testreport: add option "-skipdir" to skip some test.
212    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
213      momentum calculation.
214    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
215    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
216      remove checkpoint.F and the_correction_step.F (no longer used);
217      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
218    o add option (linFSConserveTr) to correct for tracer source/sink due to
219      Linear Free surface
220    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
221    o pkg/thsice: fix reading mnc-pickups
222    
223    checkpoint58t_post
224    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
225    o pkg/mdsio:
226     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
227       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
228       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
229     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
230     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
231       either MDS_READ_FIELD or MDS_WRITE_FIELD )
232     - new S/R (to replace MDSWRITEMETA), which allows to write more
233       informations (variable names, time ...) to meta files.
234     - modify rdmds.m to give back the meta file content.
235    o pkg/diagnostics: change vertical interpolation to be safer, and more
236       flexible (define p-levels to interpolate to in data.diagnostics);
237      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
238       diagnostic pointer.
239    o pkg/seaice: more cleaning up of seaice_growth, added many comments
240    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
241    o fix multi-category seaice:
242     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
243       SEAICE_MULTICATEGORY
244     - fix short wave heat flux
245    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
246       and allow to use EVP solver. Change forward lab_sea: test both EVP
247       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
248    o Initial check-in of lab_sea adjoint
249      (very similar to natl_box_adjoint/code_seaice)
250      * used C-grid and EVP solver
251      * used KPP, GM/Redi
252      * uses inAdExact=.TRUE.
253      * gradient checks fail for both ADM and TLM
254        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
255        f.d. gradients actually seem more problematic than ADM, TLM gradients;
256        issue is related to forward mismatch between g77 an ifort
257    o pkg/seaice: overhaul of thermodynamics
258     - growth.F and groatb.F are replaced by new routine seaice_growth.F
259     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
260     - move a few global fields out of SEAICE.h into seaice_growth.F and
261       make them 2D (FICE/QNETO/ ...)
262     - remove FO (it is the same as QNETO)
263     - introduce a few local fields to avoid modifying external fields such
264       as atemp, etc.
265    
266    checkpoint58s_post
267    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
268      changed exf_set_gen.F so that
269        genperiod=0 means input file is one time-constant field and
270        genperiod=-12 means input file contains 12 monthly means
271    o CG2D: use pre-computed solver main-diagonal (stored in common block);
272      this affects truncation error ; generate new output file for exp. which
273      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
274        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
275        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
276        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
277        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
278        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
279    o start implementation of deep-atmosphere and anelastic formulation
280    o verification: remove 2nd copy of input files and use script "prepare_run"
281      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
282    o mom_common/vecinv/fluxform: fix a few initialisation isssues
283    o profiles: fix for multithreaded case
284    
285    o diagnostics: rename few diags:
286      s/'PRESSURE'/'RCENTER '/g
287      s/'TICE    '/'oceFreez'/g
288      s/'TAUX    '/'oceTAUX '/g
289      s/'TAUY    '/'oceTAUY '/g
290      s/'SWFLUX  '/'oceQsw  '/g
291      s/DIFx/DFxE/g
292      s/DIFy/DFyE/g
293      and add few ocean-forcing diagnostics:
294      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
295    o modifications to pkg/seaice/growth.F and budget.F, which change results of
296      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
297      as actual snow thickness.  It now refers everywhere to effective snow
298      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
299    
300    checkpoint58r_post
301    o modifications to pkg/seaice/growth.F, which change results of
302      lab_sea experiment: fixes pertain to melting snow over open water, to
303      masking EVAP under sea ice, and to using the correct AREA variable for
304      computations of EVAP, PRECIP, HSNOW, and GHEFF
305    o add ability to read bathy, salt, and theta using MNC (off by def)
306    o add flooding algorithm and advection of HSNOW for pkg/seaice;
307      both are turned off by default and do no change any results
308    o seaice advection with pkg/thsice: a step toward the use of non-linear
309      advection scheme, but #ifdef or commented out for now (requires more EXCH).
310    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
311      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
312      in natl_box (affects results @ truncation level: update output.txt)
313    o multi-threading and IO:
314      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
315      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
316        (needed to work with SingleCpuIO): tested in all verif. exp.
317    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
318      affects the results (but none of the verification test uses this scheme).
319    o Adding some pkg/diagnostics capability to pkg/seaice
320      (will certainly be subject to changes)
321    o ctrl: adding new control variables:
322      lwflux, lwdown, evap, snowprecip, apressure, runoff
323    
324    checkpoint58q_post
325    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
326      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
327      high_res_cube configuration by 4% on Columbia.
328    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
329      add (in global_with_exf/code) a version of EXF_INTERP_READ without
330      dynamical allocation (seems to work in multi-threaded).
331    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
332      single CPU io) so that TAF does not have to see EESUPPORT.h
333    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
334    
335    checkpoint58p_post
336    o obcs: stop if obcs is used with useCDscheme = .true.
337    o shelfice:
338     - fix a sign error so that no slip at shelfice interface works
339     - remove stop for combination non-hydrostatic code and shelfice. That does
340       not mean, that the results are correct, but at least they are numerically
341       stable
342    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
343    o added adjoint exch routined for all exch*3d* routines
344      and updated flow directives
345    
346    checkpoint58o_post
347    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
348      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
349    o change controling S/R for writing pickup file (new S/R do_write_pickup)
350      and clean-up reading/writing of pickup files.
351    o fix local version of read/write pickup (NH part) in rotating_tank/code
352    o simplify EXCH interface:
353     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
354     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
355    o added the regrid package
356    o shelfice:
357     - add a simple boundary layer scheme to reduce noise
358     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
359    
360    checkpoint58n_post
361    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
362       local variable (not in common block).
363    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
364      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
365      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
366        to work with SingleCpuIO.
367    o add "_d 0" to real constant of pkg/cfc subroutines ;
368       update exp. cfc_exemple & tutorial_cfc_offline output files.
369    o multi-threading and IO:
370      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
371        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
372      - barrier before and after reading.
373      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
374      - avoid using MDS_WRITELOCAL for LAND pkg output.
375      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
376        common-block variables ; Allows multi-threading with master-thread IO.
377    o change default MAX_NO_THREADS from 32 to 4 ;
378      and stop cleanly when MAX_NO_THREADS is too small.
379    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
380    
381    checkpoint58m_post
382    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
383       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
384    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
385       keep global_ocean.90x40x15 (for AD testing) with former secondary test
386       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
387    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
388        add MITgcm_tutorials (= code + all the tutorials)
389    o ecco, option to compute cost for total ssh (mean+anom)
390    o consistent with addition of ptracer and ssh in pkg/profiles
391    o profiles: adding ptracer and ssh
392    o testreport: change multi-test output-file name
393      (from output.txt.{name} to output.{name}.txt)
394    o profiles: now ok for mutli-tiles case
395    o seaice: add 4 parameters for different advection schemes for area,
396      (effective) seaice thickness, enthalphy, and snow height. Their default
397      is the standard parameter SEAICEadvScheme
398    o calc_gw:
399     - add cosFacU in zonal viscous flux (harmonic.visc.).
400     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
401       of tutorial_plume_on_slope.
402    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
403    o calc_gw: true flux-form, account for horizontal grid spacing.
404      update rotating_tank results, but not plume_on_slope (affected at
405      truncation level, 11 digits).
406    
407    checkpoint58l_post
408    o calc_gw:
409     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
410     - remove side-drag for now (need to fix it); update plume_on_slope results.
411     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
412    o commit code to make SST/SSS weights spatially variable
413      (based on either variable in-situ or variable initial T/S weights)
414    o pkg/ecco:
415      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
416        now based on horizontally varying weights wthetaLev, wsaltLev
417      * cost_averagesflags now returns year indices in addition to day, month
418      * sflux balance is performed on annual basis
419        (sflxumm, sfluxmm2, bal_sfluxmm)
420      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
421        including separate counting and multipliers
422    o pkg/rbcs
423      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
424    
425    checkpoint58k_post
426    o testreport:
427     - always build in dir. "build" (if not there, mkdir build instead of building
428       & running in input)
429     - run in dir run (if it exists), in build otherwise.
430     - call prepare_run (if input/prepare_run exists)
431     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
432    o pkg/exf modifications to interpolation and rotation routines for more
433       reasonable treatment of North Pole singularity: for tracers North Pole
434       value is set to northernmost zonal-mean value, for zonal velocity it is
435       set to zero, and for meridional velocity it is set to northernmost value.
436    o pkg/exf/exf_check_range.F
437     - add tile index to diagnostics and move stop statement to the very
438       end of the routine.
439    o pkg/diagnostics: (diagnostics_main_init.F)
440      define title of isomorphic variables according to the current config.
441    o pkg/thsice with pkg/seaice dynamics:
442    - fix domain of computation (interior only, required for exf) and do exchanges
443    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
444    o towards a standard way of dealing with multi-threading in MONITOR
445      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
446    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
447       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
448    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
449    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
450    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
451       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
452    o tracer advection:
453     - clean-up and simplify calc_common_factors.F
454     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
455       advection subroutine (but still not used within DST advection S/R)
456    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
457    
458    checkpoint58j_post
459    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
460      from file (collects calls previously in FORWARD_STEP)
461    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
462    o adjoint store dir. adjusted accordingly
463    o genmake2
464      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
465    
466    checkpoint58i_post
467    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
468      on wind stress (SEAICEstressFactor defaults to 1.)
469    o Total number of Timers is finite (<=40): comment out 2 non-essential one
470      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
471    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
472      on CS-grid: no longer loosing mass.
473    o exf & curvilinear-grid: no longer modify longitude xC & xG.
474    o pkg/ggl90: fix sloppy output and fix a bug
475    o pkg/seaice: added SEAICEuseEVPpickup parameter
476      - Set to false in order to start EVP solver with
477        non-EVP pickup files when using SEAICEuseEVP
478      - fix sign error in diffusion in seaice_calc_rhs
479    
480    checkpoint58h_post
481    * Modifications for bottom topography control
482      o replace hFacC by _hFacC at various places
483      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
484      o add non-self-adjoint cg2d_nsa
485      o update autodiff support routines
486      o re-initialise hfac after ctrl_depth_ini
487      o works for 5x5 box, doesnt work for global_ocean.90x40x15
488    * Adding verification for 5x5 box (4-layer) bottom topography control
489    
490    checkpoint58g_post
491    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
492       used for mean seasonal cycle, mean diurnal cycle); add an example
493       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
494    o pkg/ggl90:
495      - add parameter (minimum surface kinetic energy)
496      - fix bug (avoiding division by zero)
497    o couple pkg/thsice to pkg/seaice:
498      - modify advection in seaice to accomodate new scalar fields to be advected
499      - only muliDimAdection scheme work with seaice/thsice
500      - mapping of thsice-variables to seaice-variables, back and forth
501      - does not break the verification experiments, but does not give the
502        desired results either
503    o pkg/seaice
504      - make (default) second order advection a bit less confusing?
505    
506    checkpoint58f_post
507    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
508      to pkg/seaice):
509      - new routines thsice_map_exf and thsice_get_exf provide the interface
510      - add an additional formal parameter to thsice_solve4temp
511    o pkg/exf:
512      - add new fields wspeed, snowprecip (to be able to couple to thsice)
513      - correct Stefan-Boltzmann constant
514      - new parameter for longwave surface emittance
515      - separate some stuff from exf_bulkformulae into new routines  
516        exf_radiation, exf_wind
517      - add new parameters and constants: longwave emissivity for ocean, ice
518        and snow, evaporation parameters over ice
519      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
520        either wind from stress or stress from wind
521    o pkg/thSIce:
522    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
523    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
524       and THSICE_CALC_THICKN
525    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
526    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
527      to make debugging easier.
528    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
529    o pkg/bulk_force:
530      - clean-up comments and parameters ;
531      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
532    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
533      generate new output for test-experiment: aim.5l_cs.thSI
534    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
535      testreport accordingly
536    
537    checkpoint58e_post
538    o SEAICE_CGRID adjoint done
539    o R_STAR adjoint implemented.
540      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
541      * need to sort out init. of h0facc, etc.
542    o Make pkg/profile fully independent of ecco,cost, etc. stuff
543      to be able to use it in pure forward.
544    
545    checkpoint58d_post
546    o upgrade simple test-experiment to tutorial example:
547     step.1: duplicate the experiment and (step.2) will remove the old copy.
548      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
549      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
550      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
551      tutorial_global_oce_biogeo    <- copy of dic_example
552      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
553      tutorial_plume_on_slope       <- copy of plume_on_slope
554      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
555      tutorial_global_oce_optim     <- empty for now (David ?)
556      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
557     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
558    o correct a sign problem in cost_scat.F
559    o obcs and ptracers: fix boundary conditions for advections schemes
560      with larger stencil
561    o thsice adjoint: start
562    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
563      completeness
564    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
565      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
566    o ptracers adjoint:
567      * avoid extensive recomputatations
568      * fix missing re-init. of gptr (missed by TAF)
569    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
570      me to turn off the excessive output to STDOUT that this package produces
571    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
572      and add those terms in Vector-Invariant formulation.
573    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
574      if the control period (xx_hfluxperiod etc) is 0
575    o in profiles pkg, clean routines and fix details
576    o in ecco pkg, reading ssh data:
577      fix problem in case the model does not start at iter0=0
578    o fix mnc-pickup/restart for ptracers
579    o new package prifiles:
580      code to compute profile-based cost by Gael Forget
581      (modifs in ecco, ctrl, autodiff)
582    o Benign bug fix in initialization (spotted by M. Mazloff) of
583      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
584    
585    checkpoint58c_post
586    o adjoint: finish NLFS adjoint and provide reference output in
587      verification/global_ocean.90x40x15/results_ad_nlfs
588    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
589      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
590      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
591      with SEAICE_CGRID defined.
592    o move calendarDumps from "data" to "data.cal" and clean-up the code
593      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
594    o add useEXF & useCAL flags (for now, set in hard-coded way)
595    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
596      (were missing in NH mode, and wrong in quasihydrostatic mode).
597      waiting for Chris updated version of calc_gw to add those CALLs.
598    o fix bug in quasihydrostatic S/R ;
599      add a test for this option: global_ocean.90x40x15.qshyd
600    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
601      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
602    o add on/off flag useOffLine for package OFFLINE
603    o seaice:
604      - modify advection so that it works also on the C-grid
605      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
606        problem in multi-tile runs with C-grid
607      - add flags for clipping ice velocities and/or masking solver forcing
608      - fix drag (ocean on ice) formulation and a bug that caused noise in the
609        C-grid solver
610      - added a few comments to seaice_diffusion.F
611      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
612        are now exclusive)
613      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
614        required re-ordering the code a little:
615       + make DAIRN global variable (defined in SEAICE)
616       + move computation of the viscosities eta and zeta into a new separate
617         routine (because I need to recompute them in seaice_ocean_stress.F)
618    
619    checkpoint58b_post
620    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
621      update output.txt of exp. aim.5l_cs.thSI
622    o various mnc cleanups and improvements:
623      + shrink lookup tables by factor of ~4
624      + better error reporting when running out of lookup space
625      + able to handle longer path/file names (up to 500 chars)
626    o adjoint:
627      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
628      - TBD: "hidden" mom_vecinv recomp. in dynamics
629    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
630     (allow to differentiate between forcing components using new integer flags:
631      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
632     and add new flag to put Dissipation tendency out of Adams-Bashforth.
633    o ecco
634      - enable trend removal from SSH anomaly obs.
635    o adjoint
636      - a fix for PmEpR when #undef EXACT_CONSERV
637      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
638      - try to fix "hidden" recomp. in forward_step for NLFS
639        (NLFS seems broken sometimes after I checked it in)
640    o seaice:
641     - add c-grid version of the dynamic solver:
642       + three new routines that are the c-grid substitute lsr, dynsolver
643         and ostres
644       + put a few fields that were local to dynsolver into global common
645         blocks, so that I can move the computation of stresses etc into
646         seaice_lsr (saves coding but may break the adjoint).
647     - replace more hardwired parameters by runtime parameters
648     - add ice masks that mask the rhs of the implicit solvers where there
649       is no ice (commented out in seaice_dynsolver, because i am not sure
650       if this works properly), eventually this should replace the clipping
651       of ice velocities in seaice_dynsolver to +/-40cm/s.
652    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
653      include it only where its needed
654    o move balancing of fluxes before the call of external_forcing_surf
655    o seaice:
656      - correct units of turning angles (now they are really in degrees)
657      - move computation of GWATX/Y out of main routine into dynsolver
658      - initialize GWATX/Y in seaice_init
659    o Apply mask on Fresh-Water flux (needed for SSH forcing).
660      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
661    o seaice: add runtime flags for turning angles (default to zero)
662    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
663      and trend from exf forcing and ctrl control adjustments
664    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
665      (since checkpoint57x_post)
666    o change the default rotation period to 86164.s = the Earth rotation
667    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
668      and based on a reference stratification. Tested within hs94.cs-32x32x5.
669    o seaice advection: add code for choosing between the default (2nd order
670      central differences) and multiDim advection schemes provided by
671      pkg/generic_advdiff
672    o seaice:
673      - removed all references to SEAICE_GRID.h fields from
674        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
675        (cubed-sphere configuration will change a little)
676      - grid computations in seaice_init are obsolete now.
677      - cleaned up code a little so that is easier to read (hopefully).
678      - added new (better?) discretizations of default advection and diffusion
679        (turn on with SEAICEuseFluxForm)
680      - replace 1 in 3d global fields by kSurface in growth.F
681      
682    checkpoint58a_post
683    o seaice:
684      - bug fix in advect.F
685    o shelfice:
686      - separate shelfice load anomaly from pload (breaks with time
687        dependent forcing), => introduce constant field shelficeLoadAnomaly.
688        Its default is 0., but it may be computed more cleverly from (unknown)
689        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
690        done offline. A good approximation of the pressure load anomaly is
691        necessary to avoid large initial adjustment processes underneath
692        deep-reaching shelfice.
693      - small fix in ISOMIP shelfice_thermodynamics
694      - add more sophisticated thermodynamics of Hellmer (1989), this is
695        now the default
696      - give a few constants more intuitive names
697    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
698      if bulk formulae are used in long integration (especially EmPmR). Turn
699      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
700      if balancePrintMean, the imbalance that is substracted is printed to
701      STDOUT.
702    o fix bug (typo) in obcs_apply_eta.F
703    o add a new package shelfice which enables us to model the circulation
704      underneath shelf-ice with draughts of hundreds of meters.
705     - works
706     - to do: + include improved thermodynamics
707              + check whether kSurfC (from model/inc/SURFACE.h) can be used
708                instead of new field kTopC
709              + can we use topoFile, Ro_surf and existing code in ini_depth.F
710                instead of new field R_shelfIce and new code in ini_depth.F
711                and ini_mask_etc.F?
712              + adjust vertical mixing schemes?
713    o seaice pkg:
714     - add a cpp-flag to include a simple formula for a salinity dependent
715       freezing point of sea water at the surface
716     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
717       meridional stresses are now different (and hopefully correct)
718    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
719       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
720       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
721    o pkg/diagnostics: add options and parameters for regional-statistics
722       diagnostics ; define regions by reading a region-mask from a file
723       (might add other options later)
724    o pkg/bulk_force:
725     - add option and parameters to use AIM surface-flux formulae.
726     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
727       others forcing fields (defined in PARM05, parameter file "data") are loaded
728       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
729     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
730     - use the right EXCH call for uwind,vwind (to work on CS-grid).
731     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
732       and parameters (note: calcWindStress replaces .NOT.readwindstress).
733     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
734    
735    checkpoint58
736    o add "--embed-source" option to genmake2 which, when the supporting
737      tools can be compiled (as determined by genmake2) will turn on the
738      embed_files package which then embeds the entire MITgcm source code
739      (*.[fFhc] + Makefile) used for the build within the executable
740      - requested by CNH but off by default
741      - adds a paltry <9MB to the mitgcmuv executable in most cases
742      - only writes the output when useEMBEDSRC in eedata is true
743    o clean up 3-dim. relaxation codes:
744      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
745      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
746      * Thanks to Tom Haine for testing!
747    
748    checkpoint57z_post
749    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
750      affects output (@ truncation level) of exp. plume_on_slope ; updated.
751    o fix the pickup behavior for obcs in combination with ptracers
752    o fix a bug in ptracers_external_fields_load
753    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
754      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
755    o transfered surface NH pressure to eta field (if exactConserv).
756    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
757         and update lab_sea output.txt file.
758    o completing 3-dim. relaxation code: additional term
759         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
760      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
761      * At compile time, in "EXF_OPTIONS.h" set
762          #define  ALLOW_CLIMTEMP_RELAXATION
763          #define  ALLOW_CLIMSALT_RELAXATION
764      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
765          tauThetaClimRelax3Dim = 15552000.0,
766          tauSaltClimRelax3Dim  = 15552000.0,
767      * 3 cases:
768          1) Use a constant-in-time 3-dim. field
769          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
770          3) Real-time relax. to time-evolving prescribed field
771    o Adding Laplacian-type smoothness constraint on
772      initial and boundary (forcing) controls (ic, bc)
773      * enable at compile-time via
774        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
775      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
776      * Absolute scale somewhat unclear so far
777      * no area weighting was included since no other cost term does so far
778    
779    checkpoint57y_post
780    First step for a NLFS adjoint
781    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
782    o new init. routines for calc_r_star, calc_surf_dr
783    o still need to deal with ini_masks_etc
784    o testreport seemed happy
785    checkpoint57y_pre
786    
787    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
788    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
789    o add new offset feature to offline pkg (plus minor cleanup)
790    o cfc fixes for final year of integration
791    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
792      be in GCHEM_OPTIONS).
793    
794    checkpoint57x_post
795    o fix testreport Pb in multiple test experiment.
796    o cleanup our namelist syntax in verification:
797      - make it more F95 standards compliant (some work still needed)
798      - allows the vast majority of our tests to work with gfortran
799    o Non-Hydrostatic:
800     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
801     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
802    o Allow to apply AB on T,S rather than on AB(gT,gS):
803     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
804     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
805       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
806     - need a "clever" read_pickup to restart from the other AB formulation
807    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
808    o remove some unused variables (reduces number of compiler warnings)
809    o adjoint
810      * Disable useVariableViscosity for adjoint for time being
811        (there are a number of extensive recomputations)
812      * Initialize certain variables needed for adjoint
813    
814    checkpoint57w_post
815    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
816                 fix the singleCpuIO RS version of MDSWRITEFIELD
817       and add a WARNING if using globalFiles=T with multi-processors.
818    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
819      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
820    o tracer advection scheme:
821      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
822       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
823       was not very convenient).
824      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
825       (further tests needed for the implicit DST & Flux-Limiter schemes).
826    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
827      and sRef for convenience, handy, when you want to initialize
828      ptracers in a large domain with a constant non-zero value. Also,
829      untangle ptracers_init.F a little.
830    
831    checkpoint57v_post
832    o change dome exp. to use variable viscosity in side-drag terms.
833    o remove all the files from the cfc_offline test since they are now
834      incorporated into tutorial_cfc_offline which has been producing
835      identical results for a few days of testing
836    o add new parameter: sideDragFactor to enable half-slip-side BC
837      and change side-drag S/R to use viscosity from mom_calc_visc
838      (can switch back by setting sideDragFactor=0.); affects results at
839      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
840       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
841    o vorticity & strain are now computed without masking, to account for
842      no-slip-side BC in variable viscosity calculation ; mask is applied
843      anyway later on, before computing advection/coriolis terms.
844    o modify exp4 to test new obcs support for reading from external files
845      and for passive tracers
846    o fix behavior of ptracers_monitor when monitor output is written to a
847      netcdf-file; still not independent of monitor.F (writes in the same
848      file).
849    o change default value of tRef (put a uniform, meaningful value for ocean
850      & atmos) and initialize sRef (was missing, as Martin mentioned).
851    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
852      to be proportional to enstrophy dissipation length.  Thus,
853       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
854      This is now consistent with Smagorinsky and with the manual.
855    
856    checkpoint57u_post
857    o OBCS and PTRACERS: add open boundary support for passive tracers
858      - either use homogenous (pseudo) v.Neumann conditions or prescribe
859        OB-values from file; this is not different from the way theta and salinity
860        are treated
861      - however, Orlanski-radiation conditions are not supported, and the model
862        will stop if you use pTracers and Orlanski at the same time.
863      - beefed up the rountine obcs_external_fields_load: now only those open
864        boundary values are overwritten with values from files for which there
865        are really files, otherwise the OB-fields remain untouched. This makes
866        it possible to use different OBs at different ends of the domain (as
867        with EXF)
868    o reduce number of exch calls in shap_filt (s2).
869    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
870      truncation level) 4/5 MLAdjust test results (11&12 digits match).
871    
872    checkpoint57t_post
873    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
874    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
875      same truncation, independent of the face number: affects affects several
876      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
877    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
878      note that biharmonic viscosity + no-slip was not tested in any experiment.
879    o fix bug in non-linear free-surf side-drag ; generate new output for
880      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
881    o make mnc honor the writeBinaryPrec flag for most kinds of output
882    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
883    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
884      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
885    o add brackets in multi-terms sum to get same truncation, independent of
886      the face number (manage to get exactly same value of gU,gV at the cs-edge)
887      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
888    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
889      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
890      a maximum grid-scale Reynolds number.  Also, changes all length calculations
891      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
892      Suggested values of viscosity parameters found in mom_calc_visc.
893      Many new viscosity diagnostics available.
894    
895    checkpoint57s_post
896    o Add clearing-house for viscosity calculations, mom_calc_visc and
897      correct numerous bugs in LeithD and Smagorinsky discretizations.  
898      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
899      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
900      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
901      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
902      The Strain-Tension form is now called with useStrainTensonVisc=.true.
903      ViscAhStrain and viscAhTension are now retired.
904    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
905    o In response to JMC's bug report, genmake2 now ignores any soft-links
906      that it finds in the *current* directory when searching for files.
907      Soft-links found in any other source directories will still work as
908      they did before.
909    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
910      a C routine to unlimit the stack size
911    o mnc-ify pkg/aim snapshot vars
912    o mnc-ify pkg/land as requested by Daniel
913    o various changes to mnc including:
914      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
915      - output can now be grouped so that all files within a group
916          change the ITER portion of their names in lock-step together
917      - can now read ("global") PER-FACE (in addition to PER-TILE) files
918          and works with both EXCH1 and EXCH2 (but needs more testing)
919      - writing works for all verification test cases w/ g77 on Linux
920    
921    checkpoint57r_post
922    o make MNC variable initialization happen earlier
923    o add diagnostics for (almost) each term of the momentum Eq.
924    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
925    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
926    o remove MINIMAL_TAVE_OUTPUT option ;
927      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
928    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
929      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
930    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
931    o add time-dependent SST, SSS control
932    o cost terms in ecco/ modularized (new cost_generic.F)
933    o cost_averages routines are modularized (new cost_averagesgeneric.F)
934    o new infrastructure for seaice model vs. obs misfits in seaice/
935      * driver from the_main_loop.F is seaice_cost_driver.F
936      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
937      * gradient check in Exp. 6a of natl_box_adjoint/
938    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
939      (see README file)
940    
941    checkpoint57q_post
942    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
943    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
944      - bug was reported by Jean-Michel and Ian Fenty
945    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
946      update exp. cpl_aim+ocn output.
947    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
948      Needed for high-res. runs with large global files
949      to be able to limit tapelev size
950    o Changed some tests for adjoint:
951      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
952      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
953      * global_ocean.90x40x15/ back to default 3-level checkpointing
954    o Modifications to enable scripted COMMON to MODULE conversion
955      * verification/OpenAD/code/ has necessary scripts and description;
956      * converts, compiles and runs successfully;
957    
958    checkpoint57p_post
959    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
960    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
961      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
962    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
963    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
964      (was already the case for dissipation with mom_vecinv,
965       and also the case for grad.PhiHyd when staggered-timeStep)
966      This will allow to put dissipation out-off the AB time-stepping.
967     Unfortunately, affects truncation error. Update output of exp. that "fails"
968      (cg2d matching number) and leave the others for later: front_relax(10),
969      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
970      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
971    
972    checkpoint57o_post
973    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
974      (2) its ready to be documented during the 20050801 DocFest
975    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
976      for ideal_2D_oce and lab_sea on linux_ia32_g77
977    o set to #undef CTRL_SET_OLD_MAXCVARS_30
978      in global1x1_tot/code_seaice_adj to access indices 32, 33
979      (worth another tag)
980    
981    checkpoint57n_post
982    o adding precip control xx_precip 32
983    o adding swflux control xx_swflux 33
984    o Replacing 10 forcing penalty cost routines by 1 generic.
985    o Implementing partitioning in time-mean and variable adjustment
986      for atmos. state.
987    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
988    o in natl_box_adjoint:
989      * updated exp 1 to 10
990        (but does not have time-mean vs. variable split results yet)
991    o updated global1x1/*_seaice_adj/
992      to incorporate latest changes
993    o enable useSingleCpuIO for mdsio vector routines
994      (applies in particular to tapelev I/O)
995    o removed inefficient K-loop in all active_file*control*.F
996    
997    checkpoint57m_post
998    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
999      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1000    o pkg/exch2: filling of face-corner halo regions is optional
1001      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1002    
1003    checkpoint57l_post
1004     tag before updating tutorials (pre-release-2)
1005    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1006       for output and interpolation of input fields onto model grid)
1007    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1008       Affects results of exp. rotating_tank ; update output.txt.
1009    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1010          and taking the square quantity and/or using a fraction-weight field.
1011    o fix aim_diagnostics_init.F mate numbers.
1012    o add mnc output capability to diagnostics/diagstat and update
1013      our cvsignore files for the ACSII output generated
1014    
1015    checkpoint57k_post
1016    o lab_sea now uses diagnostics package and provides a suite of
1017      new EXF diagnostics output.
1018    
1019    checkpoint57j_post
1020    o exf
1021      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1022        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1023        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1024      * extended diagnostics output
1025        - now includes all EXF variables
1026        - hs, hl moved to common block
1027        - separate S/R for diagnostics, called after ctrl vector is added
1028        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1029        - EXFqnet contains true Qnet (i.e. includes qsw)
1030      * updated verif. lab_sea, global_with_exf
1031      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1032        to ensure that diagnostics sees a true EXFqnet
1033    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1034    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1035      several times with different frequencies.
1036    o mnc-ify the thsice package as requested by Daniel Enderton
1037      - the monitor--MNC output needs work
1038      - many attributes need to be added (most are currently blank)
1039    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1040      - many attributes need to be added (most are currently blank)
1041    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1042    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1043    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1044      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1045         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1046    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1047     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1048    
1049    checkpoint57i_post
1050    o Diagnostics package was changed: diagnostic allocation is now deactivated
1051      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1052    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1053      add 1rst Order upwind vertical Shear.
1054    o add a quick fix for A/B checkpointing in OFFLINE mode
1055    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1056      end-run around the C/Fortran linking horror in eesup/src/timers.F
1057    o added pkg/runclock: allows user to terminate run based on wall clock
1058    o added non-hydrostatic scaling parameter: nh_am2
1059    o pkg/my82: futile attempt to make results compiler-independent by adding
1060      some "_d 0", etc. no effect.
1061    o for mnc output, fill the 'T' coordinate var with myTime and create a
1062      separate 'iter' variable for iteration count
1063    o pkg/diagnostics:
1064      add new capability: output of Global/Regional & per-level statistics ;
1065      tested against monitor output (including land & thSIce) on various exp.
1066    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1067    
1068    checkpoint57h_done
1069      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1070      data.diagnostics, data.gchem, data.ptracers) is done.
1071    
1072    o pkg/diagnostics: prepare for Global/Regional statistics.
1073      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1074    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1075      and rename it: DIFFERENT_MULTIPLE
1076    
1077    checkpoint57h_post
1078    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1079    o pkg/diagnostics: change output frequency, now in seconds (instead
1080      of Nb of iterations). This requires to change data.diagnostics.
1081    checkpoint57h_pre
1082    
1083    o in mnc, let the user create the output dir if both mnc_outdir_date
1084      and mnc_outdir_num are false
1085    o add fflags() to pkg/diagnostics which allows one to specify, on a
1086      per-file basis, the file precision [default behavior is unchanged]
1087    o added diagnostics to pkg/kpp, including computation of mixed layer
1088      depth based on a temperature/density criterion
1089    o updated verification/natl_box to test the new pkg/kpp diagnostics
1090    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1091    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1092    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1093      not mnc -- this mistake was found by JMC and is now corrected
1094    
1095    checkpoint57g_post
1096    o add Adams-Bashforth 3rd Order time stepping:
1097      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1098      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1099    checkpoint57g_pre
1100    
1101    o make lambda[Theta,Salt]ClimRelax spatially varying
1102      (default remains spatially uniform constant based on tau)
1103    o added new control variables
1104      * init. uVel, vVel, etanN
1105      * lambda[Theta,Salt]ClimRelax
1106    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1107      (suggested by G. Forget)
1108    
1109    checkpoint57f_post
1110    o add parameter "baseTime" = model base time = time at iteration zero
1111      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1112      account for baseTime shift
1113    o move Coriolis arrays from PARAMS.h to GRID.h
1114    checkpoint57f_pre
1115    
1116    o mnc-ifying the seaice package
1117    o introduced an alternative length scale calculation for use in the limiting
1118      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1119    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1120    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1121      as well as grad(vort3).  Made it compatible with both approximate form
1122      for the cubed sphere and full form of these gradients.  Added flag
1123      useFullLeith to select between approximate and full form.  
1124    o add "d0" in getcon.F to reduce differences between compilers/platforms
1125      update output.txt of exp. fizhi-gridalt-hs
1126    o change port_rand funtion to allow to set the seed.
1127    o fix obscure MNC bug involving conversion between reals and integers
1128      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1129        new version is now more standards-compliant
1130    o adjoint-related modifications
1131      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1132      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1133      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1134    
1135    checkpoint57e_post
1136    o Adding eddy stress controls a la Ferreira et al.
1137    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1138    
1139    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1140      update output.txt of exp. fizhi-gridalt-hs
1141    o add more "Z" dimensions and associated coordinate vars to MNC
1142    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1143    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1144      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1145      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1146      months and years.  Requires pkg/cal.
1147    o diagnostics: add pickup functionality
1148      - off by default for backwards compatibility
1149      - current version only uses MDSIO -- MNC will be added
1150    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1151    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1152    
1153    checkpoint57d_post
1154    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1155    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1156      output from the diagnostics package
1157    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1158    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1159      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1160    o add coordinate variables to the MNC output from the diagnostics package
1161    o change MNC-flags default value: true when useMNC=TRUE
1162    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1163      the ability (off by default) to read the grid information using MNC
1164    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1165    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1166    o do snap-shot diagnostics at the middle of the time-interval (instead of
1167      at the end).
1168    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1169      new test for AIM with thSIce + slab-ocean
1170    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1171    o move state variable diagnostics to the beginning of the time step ;
1172      (note: still needs some work specially for snap-shot diagnostics)
1173      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1174    
1175    checkpoint57c_post
1176    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1177    o generate new output.txt files on faulks with g77 & the new -ieee option
1178    checkpoint57c_pre
1179    
1180    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1181      update output.txt of exp. global_ocean.90x40x15
1182    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1183      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1184    o add saltFlux(+File) forcing capability with periodicExternalForcing
1185    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1186    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1187    o improvements for the MNC output from DIAGNOSTICS:
1188      - correct handling of the unlimitied dimension
1189      - all dims now have associated coordinate variables
1190      - variables located at U, V, and Corner ("Z") points are now written
1191        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1192        *all* data points are output
1193    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1194    o added pkg/seaice/seaice_monitor.F
1195    o mdsio_readfield.F can now read files visible only to master MPI process.
1196    o pkg/seaice: some test code for ice-modified ocean stress
1197    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1198      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1199      spurious negative numbers for precipitation and humidity.  Will cause
1200      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1201    o pkg/ctrl/
1202      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1203        May be enabled via doPackDiag
1204      *  introduce z-scaling of
1205         + gradient (doZscalePack) and
1206         + control (doZscaleUnpack)
1207    o pkg/mdsio/
1208      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1209      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1210    
1211    checkpoint57b_post
1212    o simplify options in diagnostics_fill arguments (remove weird combinations)
1213    o fix MNC coordinate variables so that they now contain per-face index
1214      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1215      general, EXCH2 grids are only aligned to a "local" coordinate system
1216    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1217    o Implement instantaneous output within pkg diagnostics:
1218      setting a negative frequency in data.diagnostics produces
1219     "snap-shot" output (as opposed to time-average if freq > 0)
1220    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1221      NOTE: change ptracer diagnostics name: use 2 characters to work with
1222            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1223    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1224      becomes the coordinate variable for the 'T' dimension
1225    o add CF-style coordinate variables to MNC
1226      - just a first cut:  numbers are meaningless on the cubesphere and
1227        missing along the T axis but otherwise it works!
1228    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1229    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1230    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1231      this is based directly on what the model compute, so that the content of
1232      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1233    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1234    o clean up build options files for SunOS, in particular
1235      - remove -traditional from xmakedepend
1236      - change -xarch=v9 to -xarch=native for f77
1237      - restore use of make (not gmake)
1238      - add CC=gcc if using g77
1239    o changes per discussion of AM, JMC, & EH3 today:
1240      - move redundant "grid" variables out of "state" -- in preparation of
1241        creating proper CF-style coordinate variables and in recognition
1242        that any/all grid variables can be easily copied (eg. w/NCO) from
1243        the grid files into any of the other NetCDF files
1244      - *always* output grid variables with MDSIO (this will eventually be
1245        changed)
1246      - output MNC grid file if useMNC is true
1247    o every instance of _END_MASTER() has been found and replaced with
1248      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1249      preprocessors
1250    o re-arrange diagnostics pkg initialisation:
1251     - allow each package to extend the available diagnostics list
1252     - add some checking and fix small problems (multi-threaded, ...)
1253     - new S/R diagnostics_fill (replace fill_diagnostics):
1254       look through the short list of active diag. (instead of the long list)
1255       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1256    
1257    checkpoint57a_post
1258    o this set of changes restores TAMC compatibility
1259      tested for global_ocean.90x40x15 adjoint on trough
1260      (what a pain)
1261    
1262    checkpoint57a_pre
1263    o some modifs in tools/build_options for sunos
1264    o call ctrl_pack for ctrl at end for optimcycle=0
1265    
1266    checkpoint57
1267    o add horizontal bi-harmonic viscosity for vertical velocity
1268      - new parameter viscA4W (defaults to viscA4)
1269      - affects only non-hydrostatic code
1270      - to be done: no-slip lateral boundary conditions
1271    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1272    o implement Implicit Vertical advection for pTracers
1273    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1274      (implemented also for implicit vertical diffusion & advection)
1275    o OBCS: extend application of tracer open boundary conditions
1276      to a strip beyond the boundary of width Olx/Oly
1277    o add call monitor to TAF set of required calls (flow directives)
1278      and include in natl_box_adjoint
1279    o untangle a few ifdefs related to cost, ctrl, autodiff
1280      untangel a few ALLOW_ECCO_OPTIMIZATION
1281    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1282      (theta2, salt2 in ecco_cost_weights)
1283    
1284    checkpoint56c_post
1285    o OBCS as control variables
1286      - update ctrl_ad_diff.list, obcs_ad_diff.list
1287      - remove balance of obcs controls from default
1288      - fix index bug nobcs in ctrl_init
1289      - fix dummy fields filen in ctrl_pack
1290      - add dummy weights for obcs
1291    o lsopt: comment out fort.94 output
1292    o optim:
1293      - remove unnecessary header files
1294      - adjusted namelists
1295      - add xerbla.F to Makefile
1296    o exf:
1297      - multiple modifications of exf_check_range
1298      - unit change in exf_init_runoff from [m/year] to [m/s]
1299    o mdsio:
1300      - i/o-vector change debugLevel from debLevA to debLevB
1301    
1302    checkpoint56b_post
1303    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1304      is called from DO_THE_MODEL_IO
1305      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1306      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1307      - clean up PTRACERS_WRITE_TIMEAVE a little
1308    o add another verification experiment that tests both the cfc-pkg and
1309      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1310      reactive tendencies treated inline with regular timestepping
1311    o testreport previously did a lousy job of comparing small numbers, so
1312      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1313      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1314      testreport.
1315    o ptracers_monitor: bug fix for MPI
1316    
1317    checkpoint56a_post
1318    o GCHEM: finish reorganizating the package
1319      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1320        (introduces another 3D-array for each passive tracer, but only if
1321        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1322        gchemTendency is not needed because the timestep is done separately)
1323      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1324      - GCHEM is now---more or less cleanly---separate from PTRACERS
1325      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1326        so clear to me how that should be done in a general way.
1327    o CFC: improve formatting of output in CFC_ATMOS
1328    o PTRACERS:
1329      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1330        that ALL experiments with ptracers enable can be checked. This makes
1331        GCHEM_MONITOR obsolete.
1332      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1333        monitorFreq
1334      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1335    o add PTRACERS (PTR0[1-5]) to testreport output
1336    o exf_check_range:
1337      * default changed to .TRUE.
1338      * will check values for niter0 if debLevA, every timestep if debLevB
1339      * STOP in exf_check_range if 'out of range'
1340      * range chosen generous to allow for potential extema
1341      TBD: a version with stricter range
1342           permitted range would be runtime parameters
1343    o GMredi:
1344      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1345      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1346      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1347    o GCHEM:
1348      - move call to GCHEM_FORCING_SEP, so that it is now called before
1349        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1350      - introduced a useGCHEM runtime flag and applied it everywhere.
1351      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1352        this flag is now only visible within GCHEM-pkg routines.
1353      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1354        be replaced by a 3D array that is computed before thermodynamics; for
1355        this, the tracer ID iTracer had to be included into the parameter list
1356        of ptracers_forcing
1357      - set up forward_step to call gchem_forcing, that will replace
1358        gchem_forcing_int in ptracers_forcing
1359      - cleaning up
1360    o small cleaning of exch2: remove files that are also in eesupp/src
1361    
1362    checkpoint56
1363    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1364    o mnc: cleanup "full" files--fixes out-of-memory problem
1365    o ECCO-GODAE
1366      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1367      * fully merged and updated from SIO code
1368        windstress sign change affects
1369        - exf_inscal_[u/v]stress
1370        - sign of xx_tau[u/v] adjustments
1371        - signs in cost_scat
1372      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1373      * natl_box_adjoint updated and compressed
1374      * 2-level checkpoint switch added
1375        (tested in EXP. 1 of natl_box_adjoint)
1376      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1377    o SVD
1378      * first complete, non-hacked version for SVD calculations
1379      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1380        performed via direct access files admtlm_vector.it????
1381        (via ctrl_[un]pack)
1382      * optimcycle is used for ARPACK iteration counter
1383        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1384      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1385        and add linear transforms where necessary
1386      * controls are initial/final SST, SSS (can be extended; need to check
1387        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1388    o mdsio: filename info to both stderr, stdout
1389    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1390      from sign change
1391    
1392    checkpoint55j_post
1393    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1394      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1395    o add consistent build directories and .cvsignore files to verification
1396    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1397    o make all subroutines 30 or less characters in length for certain older
1398      compilers to work (a thorough search only turns up two routines in
1399      pkg/ptracers)
1400    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1401      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1402    
1403    checkpoint55i_post
1404    o change arrays for total vertical diffusivity (2.D if explicit,
1405      3.D if implicit) ; each ptracer uses its own background value.
1406    o added mnc/NetCDF output capability to ocn_compon_interf
1407      - added bits to verification/cpl_aim+ocn so that it can run on
1408        ITRDA and other clusters without the mpirun "-wd" option
1409    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1410      configuration
1411    o give MNC the ability to create additional files rather than
1412      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1413      - the default is just less than 2GB which is a practical limit
1414        on many systems
1415    o Compute the non-local term using either KPP vertical diffusivity (=default)
1416       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1417    
1418    checkpoint55h_post
1419    o add verification test "vermix"
1420    o remove all the *_ioinc flags and replace with the single global
1421      outputTypesInclusive flag
1422    o allow to set a vertical profile of vertical diffusivity for T & S
1423    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1424    o useMNC moved from data.mnc to data.pkg
1425    
1426    checkpoint55g_post
1427    o Renaming carbon AD experiments to comply with testreport conventions
1428    o Updating adjoint of Held-Suarez hs94.1x64x5
1429    o Fixing directives for non-ECCO forward_step, after ECCO directives
1430      have been fixed to avoid recomp. of do_oceanic_phys
1431      Works well for global_ocean.90x40x15,
1432      but recomp. issue remains for carbon
1433    o Updating adjoint output for natl_box_adjoint after
1434      pkg/ecco has been modified (see taga c55d_post)
1435    
1436    checkpoint55f_post
1437    o rename to timeave_init_fixed
1438    
1439    checkpoint55e_post
1440    o some delicate re-shuffle of store directives to avoid one
1441      extra call of do_oceanic_physics
1442      affects ecco_the_main_loop.F, do_oceanic_physics.F
1443      checkpoint_lev1_directives.h
1444    o NB: this may break global_ocean adjoint temporarily,
1445      but it is clear how to fix it. Will do later, need this now.
1446    
1447    checkpoint55d_post
1448    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1449    o ecco_cost_weights is modified to 1x1 runs
1450    o modifs to allow observations to be read in as
1451      single file or yearly files
1452    o enable to read exf forcing fields as either
1453      single file or yearly files (flag useExfYearlyFields)
1454    checkpoint55d_pre
1455    
1456    o switch between 2-level and 3-level checkpointing
1457    o add ability of MNC to write local and "partial" (eg. 2D slices where
1458      the full 3D field is never actually stored) arrays to NetCDF files
1459      with the correct (that is, the complete multi-dimensional) set of
1460      array indicies
1461      - used in mom_vecinv() to write the diagFreq output
1462      - tested (demonstrated) in verification/aim.5l_cs
1463    o further mnc-ification
1464      - add verification/lab_sea to the list with mnc setups
1465      - fix undefined mnc v-names in cd_code
1466      - add kpp to mnc output (both snapshot and timeave)
1467    o non-hydrostatic code
1468      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1469        in calc_gw.F
1470      - defaults to viscAh
1471      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1472        friction or Leith) in non-hydrostatic mode, as long as there is
1473        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1474    o pkg/cost
1475      extend simple cost functions to treat time mean quantities
1476      (T,U,V) via cost_accumulate_state from cost_tile
1477    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1478        be 2 times larger than the minimum size the advection scheme requires.
1479        now get a perfect conservation of salt in advect_cs test-exp (updated)
1480    o GGL90 (Gaspar's TKE mixed layer)
1481      - add horizontal diffusion of TKE, requires exchanges in
1482        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1483        default. In OPA there is no horizontal diffusion of TKE but the
1484        mixing coefficients are computed from a horizontal average of TKE of
1485        6 points or so. I think that diffusion has a little more physical
1486        justification.
1487      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1488        was in vain)
1489      - mask tke-variable in ggl90_init
1490    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1491    o fix biharmonic diffusion on CS-grid.
1492    o more obcs stuff
1493      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1494        for reading boundary values. This routine is called from
1495        obcs_prescribe_read
1496      - updated obcs_check
1497      - changed sponge layer relaxation parameter units for days to seconds
1498      - turned off sponge layer by default
1499      - changed argument list of OBCS_CALC to myTime+deltaTclock
1500      - fixed about 35 bugs in obcs_external_fields_load
1501    
1502    checkpoint55c_post
1503    o obcs stuff
1504      - new runtime flags useOBCSprescribe, useOBCSbalance
1505      - re-arranged obcs_calc
1506      - moved exf_getobcs to obcs_prescibe_read
1507        obcs_prescibe_read is called after ORLANSKI stuff
1508        and independent of it (executable can contain all).
1509      - updated obcs_check
1510      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1511        These may be necessary only if tangential velocities are
1512        prescribed at OB, not sure, needs testing.
1513    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1514      which simplifies the calls and passes the ifc check-bounds test
1515    
1516    checkpoint55b_post
1517    o add a 2D scalar, Z location, exchange_2 routine.
1518    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1519      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1520      affects advect_cs results (for the wrong reason): update output.txt
1521    o use a more standard discretization for biharmonic viscosity ;
1522     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1523      affects results of dome set-up: update output.txt
1524    o fix gad_advection.F (CubedSphere part), back to version 1.23
1525    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1526    
1527    checkpoint55a_post
1528    o merged code to
1529      * prescribe/read time-dependent open boundaries
1530        (works in conjunction with exf, cal)
1531      * sponge layer code for open boundaries
1532      * each boundary N/S/E/W now has its own CPP option
1533        (healthy for the adjoint)
1534    
1535    checkpoint55
1536    o up-to-date adjoint of previous breaks
1537      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1538      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1539      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1540      - carbon: * remove tr1-related adjoint verification
1541                * add ptracer as control variable
1542    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1543      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1544    
1545    checkpoint54f_post
1546    o in verification/carbin/ remove experiment related to
1547      ALLOW_PASSIVE_TRACER (array tr1 etc)
1548      code_ad/ input_ad/ results_ad
1549    
1550    o add two new packages
1551      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1552        + subject to optimization (memory)
1553      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1554        + subject to reordering (many GOTOs in the original code)
1555        + so far opps is called for every (i,j) point, and then operates in
1556          the vertical; one may want to reorder the scheme in order operate in
1557          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1558          fields)
1559    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1560      - all verification tests compile and run with linux_ia32_g77
1561      - defaults are compatible with current input files--nothing
1562        should change if you were not previously using MNC
1563      - MNC output has been added in numerous places (eg. timeave)
1564        but there are still a few writes not yet do-able with MNC
1565        (this is in progress)
1566      - flags now allow for either/or/both use of MDSIO and MNC and
1567        documentation will soon follow
1568      - numerous small formatting cleanups for ProTeX
1569    o add version info (via BUILD_INFO.h) to MNC and stdout
1570    
1571    checkpoint54e_post
1572    o add two new packages
1573      - pp81 (Packanowski and Philander, 1981), Richardson number and
1574        stratification dependent mixing
1575      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1576      - these scheme operate in a similar manner as KPP (without ghat, of
1577        course), however there is only one diffusivity that is used for both
1578        temperature and salinity (and passive tracers)ç
1579    o add offline package
1580    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1581      provided by Stephanie Dutkiewicz
1582    o genmake2: add ability to search for C compilers and cleanup test output
1583      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1584    
1585    checkpoint54d_post
1586    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1587    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1588      leading to additional shift by 5 days each year of integration
1589       (i.e. leading to considerable offset over the years)
1590    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1591    o start with no AB and no initial filtering (staggerTimeStep):
1592      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1593    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1594      (external loading & cpl import/export stay in forward_step.F)
1595    o update coupling interface to work with new staggerTimeStep
1596    o change MDSIO ptracers_pickup.
1597    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1598    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1599    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1600    
1601    checkpoint54c_post
1602    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1603      this affects (truncation error) output.txt of test-exp:
1604       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1605    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1606    o change Qnet to always be the net heat flux, (+upward).
1607      affects (truncation error) output of natl_box exp.: updated
1608    o define the max number of passive tracers in PTRACERS_SIZE.h
1609    o start to test mnc routinely in exp0
1610    o add sea-ice loading (sIceLoad) as a new forcing field.
1611    
1612    checkpoint54b_post
1613    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1614       impressive on Altix and Opteron systems)
1615    o diagnostics can now write NetCDF files through the mnc package
1616    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1617    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1618    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1619      affects (truncation error) output of lab_sea & natl_box exp.: updated
1620    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1621    
1622    checkpoint54a_post
1623    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1624    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1625    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1626    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1627      + internal_wave (shift in writing cg2d_ini_res)
1628    checkpoint54a_pre
1629    
1630    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1631      - modified verification/lab_sea and natl_box_adjoint accordingly
1632    
1633    checkpoint54
1634    checkpoint53g_post
1635    o prepare splitting of thermodynamics: store convect.counter in common block
1636    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1637      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1638    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1639    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1640    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1641    o restore adjointability
1642    
1643    checkpoint53f_post
1644    o modifications that affect AIM experiment results (update output.txt):
1645      - no advection of S at top interface Nr (pkg/generic_advdiff)
1646      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1647    o AIM pkg:
1648      - include stability function into surf.Flux derivative relative to Tsurf
1649      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1650    
1651    checkpoint53e_post
1652    o merged cylindrical coord configuration
1653    o added rotating_tank experiment
1654    checkpoint53e_pre
1655    
1656    checkpoint53d_post
1657    o faulks upgraded: re-generate output.txt that have changed:
1658       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1659    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1660    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1661    o added Sadourny discretization of Coriolis
1662      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1663      - re-enabled use of omega3 (useAbsVorticity)
1664    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1665      vector-invariant equations
1666      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1667    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1668      hopefully without new bugs
1669      - still to do: biharmonic friction for non-hydrostatic w
1670    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1671    o regenerated output for global_ocean_ebm (using -ieee)
1672    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1673      of mom_common/
1674      - simple re-arrangement of instructions within computing loop
1675    checkpoint53d_pre
1676    
1677    checkpoint53c_post
1678    o new version of coupler for AIM+thSIce and Ocean models
1679     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1680     - land: change Evaporation of snow
1681     - aim with thSIce: fix bug in snow-precip.
1682    o changes to calc_gw.F
1683     - bug fix for w^2 term near the bottom boundary
1684     - (hopefully) improve the lateral slip boundary condtions for use with
1685        partial/looped cells
1686      - because the bug fix changes two verification experiments anyway (exp5
1687        and plume on slope), change the lateral boundary condition from half slip
1688        to the value of no_slip_sides
1689    o ebm package wasnt quite up to the parallel task. Fixed that.
1690    o Adjoint of EBM package + verification
1691      * TLM OK
1692      * ADM not sufficient accuracy yet (needs further testing)
1693    
1694    checkpoint53b_post
1695    o Commiting new energy balance model to repository
1696      * package is pkg/ebm
1697      * verif. is verification/global_ocean_ebm
1698      * references are in ebm_driver.F
1699    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1700    C        Global thermohaline circulation. Part I:
1701    C        Sensitivity to atmospheric moisture transport.
1702    C        J. Climate 12(1), 71-82
1703    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1704    C        Global thermohaline circulation. Part II:
1705    C        Sensitivity with interactive transport.
1706    C        J. Climate 12(1), 83-91
1707    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1708    C        Destabilization of the thermohaline circulation
1709    C        by atmospheric eddy transports.
1710    C        J. Climate 7(12), 1870-1882
1711    o Will need long integration testing.
1712    checkpoint53b_pre
1713    
1714    o created pkg/mom_common in preparation for variable viscosity code
1715    o renamed and split ini_mnc_io
1716    o pkg/land: only liquid water can diffuse or run-off
1717    o AIM using land: soil wetness availability account for snow
1718    o added printMapIncludesZeros to EEPARMS namelist
1719    
1720    checkpoint53a_post
1721    o restore TAMC compatiility for exf_constants.h
1722      (no usage of _d in .h)
1723    o Additional storing in KPP in an attempt to fix
1724      TAMC problem with adjoint of KPP code.
1725      (no success...)
1726      Identical code works fine with TAF.
1727    o Fixed verification/natl_box_adjoint experiments.
1728      Initial conditions for Experiments 4 and 5 are now
1729      set to "SEAICE_initialHEFF=0", which is more reasonable,
1730      and hence gives results closer to that of Experiment 2.
1731      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1732    
1733    checkpoint53
1734    o stable checkpoint with up to date adjoint
1735      TLM tests only run for 1st grdchk at the moment. Its unclear if
1736      this is a code problem or a problem with resetting code for g_
1737      variables that is being autogenerated wrong.
1738      Otherwise:
1739       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1740       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1741         are both still in chaos following their security messes.
1742    
1743    checkpoint52n_post
1744    o various build (mostly genmake2) changes including:
1745      - ability to build/run more easily within Cygwin and MacOS X
1746      - more complicated Makefiles with a stronger dependence on Gnu Make
1747    o pkg/seaice modifications
1748      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1749        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1750        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1751      - changed proxy for geostrophic velocity and updated
1752        verification/lab_sea/results/* accordingly
1753      - removed ADI dynamic solver from pkg/seaice
1754      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1755        they caused a segmentation fault under certain circumstances
1756      - removed unused field WATR
1757    o bug fix in exf-package:
1758      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1759         now reflect that.
1760    o small fixes in the cal-package:
1761      - set reference date to first of January for the 'model'-calendar
1762      - failing of cal_CheckDate in cal_FullDate now actually results in a
1763        warning
1764    o small modifications in exf-package to increase flexibility:
1765      - change climtempfreeze from a constant to a runtime parameter that
1766        is specified in data.exf_clim (default = -1.9)
1767      - introduce runtime parameter windstressmax (default = 2.0) that is
1768        specified in data.exf
1769    o fix in pkg/thsice:
1770      - update Evap (Tsf changes) to be consistent with Latent heat flux
1771      - maintain snow precipitation unchanged (even if Tsf >=0).
1772     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1773    
1774    checkpoint52m_post
1775    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1776      this does not change any of the results, because myIter=0 in swfrac always
1777      lead to jwtype=2 (the default anyway), but the call makes little sense
1778      as a default
1779    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1780    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1781      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1782    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1783    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1784    o extending useSingleCpuIO option to work with new exch2 I/O format
1785      - old-style, missing-tile I/O is still accessible by defining CPP
1786        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1787    o monitor package can write to NetCDF files and/or STDOUT
1788    o fix re-definition bug in MNC_GRID_INIT_ALL()
1789    o doc/api_reference added
1790      - a framework for building an API Reference Manual using all
1791        the "protex" comments embedded in the code
1792      - see pkg/generic_advdiff, pkg/mnc for examples
1793    o MNC:
1794      - make myThid the last argument for all subroutines
1795      - new default for the grid files: NO halos
1796      - add useMNC and other run-time flags
1797      - separate per-file-group handling of the unlimited dimension
1798      - early initialization of MNC w/ flags read at the eeboot stage
1799        and lookup tables set in initialize_fixed
1800      - write all MNC output to a freshly-created directory
1801    o thermodynamics sea-ice (thsice) is now tested with testreport.
1802    o test exp. advect_cs: use the standard cs32 grid ; update output.
1803    o Added functionality to grdchk:
1804      pick global i,j,k position (or nearest wet) where to perform check.
1805    
1806    checkpoint52l_post
1807    o new land formulation:
1808      a) use ground enthalpy as prognostic variable to ensure exact
1809         energy conservation.
1810      b) account for water temperature and for latent heat of freezing
1811         in all processes (rain, run-off, ground storage)
1812      c) compute surface and ground temperature implicitly.
1813    o aim_v23 modification for new land model:
1814      a) Treat separately land / ocean / sea-ice surface fluxes
1815         to allow implicit computation of land & sea-ice surface temp.
1816      b) add snow precipitation.
1817    checkpoint52l_pre
1818    
1819    o fix problem (when 1 tile is empty) in min/max monitor.
1820    o fix bug in timeAve (u,vZetatave in common block)
1821    o no restoring terms under ice for pkg/seaice
1822    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1823    o bug fix for pkg/seaice pickups
1824    o change MNC call locations and add coordinate attributes
1825    o mask vorticity at the corner ; affects global_ocean.cs output
1826    o fix ini_curvilinear_grid ; test CS experiments with mpi
1827    o aim.5l_cs: modify sea-ice fraction input file ; update output
1828    o exf: Adding simple range check routine for exf fields after read
1829    
1830    checkpoint52k_post
1831    o removed top-level directory "diags"
1832      - we migrated these functions to pkg/timeave a long time ago
1833    o fixed bug introduced in pkg/monitor
1834    o accuracy ctrlprec = 32 insuffient for gradient checks using
1835      averaged fields (I/O via cost_averages)
1836      -> use ctrl.h in active_file*.F to control I/O precision.
1837    o paramter list of CALL ADTHE_MAIN_LOOP
1838    o added initial do_the_model_io to ecco
1839    o set all ...Freq to zero after cost_final
1840      taveFreq, dumpFreq, pChkptFreq
1841    o MAIN and ECCO differentiability restored
1842    
1843    checkpoint52j_post
1844    o fix nchklev in tamc.h for global_ocean...
1845    o Bringing flow and store directives up-to-date
1846    o Really weird thing!
1847      call do_the_model_io from the_main_loop with parameters
1848      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1849      TAF places a faulty re-call of initialise_varia
1850      after cost_final call which should not be there!
1851    checkpoint52j_pre
1852    
1853    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1854      error messages
1855    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1856    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1857      debug output
1858    o modfied mdsio_writefield.F to handle non-global files under exch2
1859    o update AIM Cubed-Sphere exp (aim.5l_cs):
1860      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1861    o update AIM Equatorial Channel exp:
1862      use standard aim_v23 pkg and change the SST fields to be more realistic.
1863    o globalFile now works with exch2
1864    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1865      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1866    o limit timeave output for hi-res integrations
1867    
1868    checkpoint52i_post
1869    o removed CPP_EEOPTIONS.h from verification/*/code
1870    o updated the tiling for global_ocean_pressure
1871    checkpoint52i_pre
1872    
1873    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1874      the old pkg/aim).
1875    
1876    checkpoint52h_pre
1877    o shortened offending lines in exch2_send_rx?.template
1878    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1879    o genmake2: add build & execute test for NetCDF code
1880    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1881      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1882    o added useSingleCPUIO flag to monitor.F and mon_out.F
1883    o added temporary hack for sea-ice dynamics on the cube:
1884      metric terms are ignored and it is assumed that
1885      there is no sea-ice on cube faces 1, 2, 4, and 5.
1886    
1887    checkpoint52f_post
1888    o added exch2 cube routines to pkg/exch2
1889    o modified hs94.cs-32x32x5 to use it
1890    o added new grid files to hs94.cs-32x32x5
1891    checkpoint52f_pre
1892    
1893    checkpoint52e_post
1894    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1895      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1896    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1897      to work with implicit vertical advection and AB ;
1898    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1899    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1900     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1901    checkpoint52e_pre
1902    
1903    o fix bug in impldiff when Nr=1 or Nr=2.
1904    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1905    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1906    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1907      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1908    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1909    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1910    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1911    
1912    checkpoint52d_post
1913    o re-tiled many expts to allow comparison in multi-processor mode
1914      - updated output accordingly
1915      - changed hs94.128x64x5 to use intial T from file rather than use the
1916        random number generator
1917    o add infrastructure in model routines for fizhi and gridalt packages
1918    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1919    o changes to permit hi-res, cubed-sphere, configuration
1920      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1921      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1922      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1923        of surface winds for the cube
1924      (A verification experiment, based on global_ocean.cs32x15, but with
1925       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1926       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1927       complete with example surface forcing files and matlab scripts to look
1928       at the output and compare it with that of global_ocean.cs32x15.)
1929    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1930       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1931       to conform to the common rule.
1932    o check-in the first version of the coupler + interfaces for multi-components
1933       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1934       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1935       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1936       - ocean and atmos. share the same horizontal grid (no interpolation).
1937       - exchanges between component and coupler is done in forward_step
1938    o new verification experiment, cpl_aim+ocn:
1939       coupled ocean - AIM atmosphere on cs32 grid.
1940    
1941    checkpoint52d_pre
1942    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1943    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1944    
1945    checkpoint52c_post
1946    o Fixing OPTIONS files for use of exf:
1947      - ALLOW_ECCO not needed
1948      - ECCO_CPPOPTIONS.h should not be included from
1949        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1950        as has been the case in the past
1951      - All cal/exf related options are currently set in
1952        single header file. Should remain so until we
1953        agree on a consistent new policy.
1954    o Removed all CPP options for cal package.
1955      cal has no more CPP options.
1956    o modified STOREs in GAD_ADVECTION
1957    o corrected key comp. for passkey
1958    
1959    checkpoint52b_post
1960    o new version: "thsice" of thermodynamic sea-ice pkg:
1961     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1962     - modify fluxes but do not change theta directly;
1963     - light cleaning of bulk_force pkg (still needed with thsice).
1964     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1965       + output_thsice.txt to test thsice & bulk_force pkgs.
1966    o put back grid & coriolis monitor output.
1967    checkpoint52b_pre
1968    
1969    o call "do_the_model_io" at the beginning (=> dump initial state)
1970    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1971    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1972      (need info on NUMBER_OF_PTRACERS)
1973    o missing PTRACERS headers in some routines
1974    o default tamc.h in pkg/autodiff supposed to crash
1975      to ensure proper customization
1976    
1977    checkpoint52a_post
1978    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1979      - moved surfaceTendencyTice from pkg/seaice to main code
1980      - subroutine FREEZE_SURFACE now limits only surface temperature
1981        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1982        => new output.txt for global_ocean.cs32x15 & global_with_exf
1983      - keep the old version of FREEZE for backward compatibility;
1984        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1985      - corresponding modifs for TAF directives
1986    o added surface flux output variables to TIMEAVE_STATVARS
1987    o time-averaged output for pkg/ptracers
1988    o fix problem with ECCO-related divided adjoint
1989      snapshot file was missing some ad-variables,
1990      but no warning issued by TAF
1991    
1992    checkpoint52a_pre
1993    o some bug fixes for #undef REAL4_IS_SLOW
1994    
1995    checkpoint52 = ecco_c52_e35
1996    o after testing adjoints of checkpoint51u_post
1997    
1998    checkpoint51u_post
1999    o this is the post-merge tag of the ecco-branch
2000      (needs another clean checkout and re-testing)
2001    o various natl_box_adjoint configs and results
2002      but no input fields
2003    o obcs adjoint not yet merged!
2004    o adding ECCO global 1x1 and 2x2 degree configs
2005    o updated/extended some store directives for seaice
2006    o pkg/ecco now containes ecco-specific part of cost function
2007    o top level routines the_main_loop, forward_step
2008      supersede those in model/src/
2009      previous input data.cost now in data.ecco
2010      (new namelist ecco_cost_nml)
2011    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2012    
2013    checkpoint51t_post
2014    o this is the pre-merge tag of the ecco-branch
2015    
2016    checkpoint51s_post
2017    o cleanup: removed various obsolete #define-s
2018    o pkg/grdchk
2019      - renamed 'ph-grd 3' to 'grad-res'
2020      - merged from ecco-branch
2021        (remaining bug fixes for obcs gradient checks)
2022      - additional high-precision output for testreport
2023        (grep for 'precision_grdchk_result')
2024    
2025    checkpoint51r_post
2026    o cleaned up or removed CPP_OPTIONS.h files
2027    o updated results for some of the tests to reflect the new
2028      optfiles (-ieee: -O0 instead of -O3)
2029    
2030    checkpoint51q_post
2031    o cd_code:
2032      - moved cd_scheme.F -> cd_code_scheme.F
2033      - separate read_checkpoint from cd_code_ini_vars.F
2034      - separated cd_code part from write_checkpoint
2035      - updated AD_SOURCE, generated .flow
2036      - added CD_CODE_VARS.h to the_main_loop
2037      - Moving cd_code specific store dir.s to pkg/cd_code
2038    o ctrl package totally restructured
2039      - pack/unpack now optional and decoupled from
2040        xx_/adxx_ I/O
2041      - ctrl_pack/unpack cleaned
2042        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2043      - confined inclusion of AD_CONFIG.h to where necessary.
2044    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2045    
2046    checkpoint51p_post
2047    o create initial cd_code package
2048      - WARNING: the initialization of fields within packages
2049        is broken because INI_FIELDS (where READ_CHECKPOINT is
2050        called) is called *before* PACKAGES_INIT_VARIABLES.
2051        This seems to be backwards since
2052        1) its important to initially zero the entire field including
2053           the "halo" region
2054        2) zeroing needs to be done *before* reading pickup info
2055           and the pickup call might or might not happen in any
2056           particular run
2057      - this needs an overhaul for R2
2058    o cleanup verification/*/code/GMREDI_OPTIONS.h
2059    o cleanup testreport
2060    
2061    checkpoint51o_post
2062    o bringing AD-related verif's up to date with genmake2
2063      - carbon/
2064      - global_ocean.90x40x15/
2065      - hs.94.1x64x5/
2066      - (front_relax/ )
2067    o (more) consistent directory structure for AD-related verif.'s
2068    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2069    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2070    o bug fix in find_alpha.F for MDJWF:
2071      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2072        change rho -> rho-rhoConst
2073      - replace call find_rho to find_rhonum
2074    o initialisation of rFlx extended to full array (required by TAF)
2075      and shifted to thermodynamics
2076    o removed PTRACERS.h in ptracers routine
2077    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2078    o Correcting initialisations for fVerU, fVerV.
2079    o helping TAF to recognize dependency on kUp for
2080      fVerU, fVerV
2081    o Replacing delZ by delR in pkg/ctrl/
2082    checkpoint51o_pre
2083    
2084    o undid all of cp51 pending some cleanups and discussion
2085    o added the [#include "AD_CONFIG.h"] statement to all files that need
2086       it for adjoint/tl #defines
2087     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2088     o removed tools/genmake since it no longer works
2089    
2090    checkpoint51n_post
2091    o modifications to make FREEZE flux visible to pkg/kpp
2092      - moved surfaceTendencyTice from pkg/seaice to main code
2093      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2094      - subroutine FREEZE now limits only surface temperature
2095        (this means new output.txt for global_ocean.90x40x15,
2096         global_ocean.cs32x15, and global_with_exf)
2097    o added surface flux output variables to TIMEAVE_STATVARS
2098    
2099    checkpoint51n_pre
2100    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2101    o added [#include "AD_CONFIG.h"] to all files that use the following
2102      defines:
2103      - ALLOW_ADJOINT_RUN
2104      - ALLOW_TANGENTLINEAR_RUN
2105      - ALLOW_ECCO_OPTIMIZATION
2106    
2107    checkpoint51m_post
2108    o incorporating changes to get TAMC/TAF working in genmake2
2109      - added new TAMC/TAF targets to the Makefile
2110      - various cleanups related to package handling
2111      - these changes should have no impact on the forward model
2112    
2113    checkpoint51l_post
2114    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2115     - faster algorithm for cal_addtime.F
2116     - higher precision arithmetic, where needed
2117     - pkg/exf *startdate variables changed from calendar date to
2118       model integration time
2119    
2120    checkpoint51l_pre
2121    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2122    o enable to apply restoring on S & T only in a latitude band.
2123    o update output (external_forcing_surf modif. change truncation errors)
2124       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2125    
2126    checkpoint51k_post
2127    o change default to: useNHMTerms=.FALSE.
2128     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2129       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2130     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2131        exp1, ideal_2D_oce
2132     - change data file of oceanic exp (leave the results unchanged for now)
2133       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2134    o set gravitySign automatically according to the vertical coordinate used
2135      (and change sign: back to "logical" value: +1 when R increases downward)
2136    o added an include barrier to the default CPP_OPTIONS.h and
2137      removed the #include "PACKAGES_CONFIG.h" from it
2138    o fix a bug in mom_fluxform (from chk51j_post)
2139    
2140    checkpoint51j_post
2141    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2142    o adjusted some flow directives (dynamics, thermodynamics)
2143    o added cubed-sphere case to test cost function
2144    o heckpoint_lev?_directives.h now include
2145      pkg-specific directives, whenever those are enabled.
2146    o Moving pkg-specific flow directives to corresponding pkg
2147      Moving pkg-specific differentiation list to corresponding pkg
2148      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2149      ---> conventions are
2150           - pkg_ad.flow
2151           - pkg_ad_diff.list
2152           - pkg_ad_check_lev?_dir.h
2153    
2154    checkpoint51i_post
2155    o merge of the branch-genmake2
2156      - knowingly breaks the older genmake
2157      - automatic generation of all ALLOW_${PKG_NAME} defines
2158      - new testreport supersedes older testscript
2159    o large number of package inclusion and header cleanups
2160    checkpoint51i_pre
2161    
2162    o new output for adjoin of global ocean vector invariant
2163    o fix for checkpoint of thermodynamic seaice and bulk_force
2164    o Steph gchem various cleanups
2165    
2166    checkpoint 51h_pre
2167    o fixed some single quotes
2168    o modify gchem pkg to be more versatile
2169    o modifications to clean up dic pkg
2170    o add pkg/cfc
2171    
2172    checkpoint51g_post
2173    o provide links for ARPACK and ADM*TLM
2174    o start removing verification/vero/
2175    o update AD-related stuff
2176      (in particular some IF-statements in model/src/ routines)
2177    o adding to verification/global_ocean.90x40x15/ adjoint of
2178      vector invariant setup
2179    
2180    checkpoint51f_post
2181    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2182    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2183      of tracer Green's fucntions for ocean inversion project.
2184    
2185    checkpoint51f_pre
2186    o Added on-the-fly spatial interpolation capability
2187        "USE_EXF_INTERPOLATION" to pkg/exf.
2188      - This is a temporary Cartesian-grid hack until
2189        the super-duper ESMF coupler becomes available.
2190      - See verification/global_with_exf/README for usage example.
2191      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2192        flags and modified pkg/seaice accordingly.
2193    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2194        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2195        non-local transport term.
2196    
2197    checkpoint51e_post
2198    o pkg/mom_vecinv:
2199      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2200      - add time-ave diagnostic of vorticity advection.
2201    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2202    o atmospheric geopotential: - include water vapor effect;
2203                                - use p^kappa in p* scaling.
2204    o land pkg: read initial state from files.
2205    o AIM : add stratospheric drag in the upper level
2206    
2207    checkpoint51d_post
2208    o change function ILNBLNK (=> last non-blank char.) to return zero
2209      (instead of the string length) when the string. char is empty
2210    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2211    o modif's to restore TAMC compatibility
2212      - avoid "_d" constructs in PARAMETER declarations
2213      - avoid interrupting lines by comment lines
2214    o Use cluster local disks for purely local I/O
2215      vs. globally visible disks needed for ctrl stuff
2216      (merged from ecco-branch)
2217      - new active_file_loc... and mdsio_..._loc routines
2218      - affected packages: autodiff, ctrl, grdchk, mdsio
2219    
2220    checkpoint51c_post
2221    o introducing integer flag debugLevel
2222      - debLevZero: suppress all output
2223      - debLevA: standard
2224      - debLevB: equivalent to current debugMode=.TRUE.
2225    o introducing pathname variable mdsioLocalDir for mdsio
2226      that can be specified at runtime
2227      (relevant for cluster I/O to local disk)
2228    `
2229    >>>checkpoint51b_post
2230    adjoint of ptracers
2231    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2232    o extended state in checkpoint_lev?, etc.
2233    o alternative ctrl/cost with tr1 or ptracer
2234    o new comlev1_bibj_ptracers
2235    o new ptracers.flow
2236    o made ptracers_forcing same as external_forcing_s
2237    o added verification for adjoint with ptracers
2238      - adm. grdchk fail so far
2239      - tlm. grdchk OK
2240      - checked tapelev/comlev recomputations: OK
2241    <<<checkpoint51b_pre
2242    
2243    checkpoint51a_post
2244    o added code for biogeochemistry package
2245      - new pkgs: dic, gchem
2246      - new subroutine in ptracers
2247    o modify code for biogeo packages
2248      - in model/src and pkg/ptracers
2249    
2250    checkpoint51
2251    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2252      - autodiff, ctrl, exf, grdchk, seaice
2253      kept separate packages
2254      - cost, ecco, obcs
2255    o updating verification/internal_wave, verification/lab_sea
2256      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2257    
2258    checkpoint50i_post
2259    o Preparing next differentiable checkpoint and sync
2260      of MAIN vs. ecco-branch
2261      - 1st step: this one is differentiable
2262      - 2nd step: next(! not this) checkpoint will have updated packages
2263                  from ecco-branch)
2264    
2265    checkpoint50h_post
2266    o new package "land": provide surface BC for AIM.
2267    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2268    o AIM: use true log-P extrapolation for near surface temp (= as in
2269        F.Molteni paper) ; update aim.5l_cs output.
2270    o New variable in PARM03 for more flexible pickups
2271    o somewhat cleaned package initialisation sequence for
2272      ctrl/ cost/ ecco/ in packages_... routines
2273    
2274    checkpoint50g_post
2275    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2276      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2277      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2278        made the default because of faster convergence than ADI
2279    
2280    checkpoint50f_post
2281    o exf totally restructured
2282      - replaced all exf_set_ routines by one generic exf_set_gen.F
2283        and made sure it's still differentiable
2284      - split exf_getffields.F into new exf_bulkformulae.F
2285      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2286      - updated adjoint/makefile and relevant verif. accordingly
2287    
2288    checkpoint50f_pre
2289     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2290          + change Evap over land. (update aim.5l_cs output)
2291     o added missing .cvsignores and made uniform across expts
2292     o changed configuration of tidal_basin_2d expt
2293     o added pkg/debug functions for tracing code in fatal crashes
2294     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2295     o new fn in pkg/monitor to stop model if solution grows too big
2296     o removed lots of single quotes from comments
2297    
2298    checkpoint50e_post
2299    o make KPP work with PTRACERS
2300     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2301       nearly a copy of kpp_transport_s
2302     - there is no analogue to SurfaceTendencyS, so I have to use
2303       gPtr(of the surface layer) instead
2304    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2305    checkpoint50e_pre
2306    
2307    checkpoint50d_post
2308    o change kpp output from multiple-record state files to single-record state
2309      files analogous to write_state.F
2310    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2311      analogous to the cg2d-related output.
2312    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2313      so that writing to internal file fn (with length 512) fails.
2314    checkpoint50d_pre
2315    
2316    checkpoint50c_post
2317    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2318    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2319    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2320    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2321    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2322    
2323    checkpoint50c_pre
2324    Merging from release1_p13:
2325    o bug fix for pkg/seaice dynamic solver
2326    o Added SEAICE_initialHEFF to pkg/seaice
2327    
2328    checkpoint50b_post
2329    o store u*,v* in gU,V instead of in guNm1,gvNm1
2330    o in order to put the momForcing out of the Adams-Bashforth:
2331      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2332      to timestep.F
2333    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2334    o re-generate output for highly sensitive test-exp:
2335       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2336    
2337    checkpoint50b_pre
2338    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2339    o corrected CPP option mismatch in exf_Bulk... functions for case
2340      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2341    
2342    checkpoint50a_post
2343    o Bug fix for merging between c50 and KPP.
2344      ikey was passed from thermodynamics to kpp_calc via
2345      common block rather than being recomputed in kpp_calc,
2346      in contradiction with new key itdkey.
2347      New key ikppkey created, and tamc.h headers updated.
2348    
2349    checkpoint50
2350    - 2nd step of merge with ecco-branch:
2351      merge changes in ecco-branch back into main trunk
2352    - bug fix in find_alpha
2353    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2354    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2355    - merged some sliced AD support routines
2356    
2357    checkpoint49
2358    merged from ecco-branch:
2359    o exf:
2360      - Enable initialisation of forcing fields to constant
2361        (runtime) values.
2362      - in exf_getffields.F
2363        Reduce i-/j-loop to interior domain, discarding overlaps.
2364        That also fixes wrong TAF-key computations for key_1, key_2
2365        with bulf formulae.
2366      - exf_init.F modify #ifdef for exf_init_evap
2367      - exf_getffieldrec.F, ctrl_getrec.F
2368        The following INT-usages are not safe:
2369          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2370          fldcount = int(fldsecs/fldperiod) + 1
2371        and were modified.
2372    o autodiff: checkpoint_lev...
2373      - updated storing for bulk formulae (some arrays were missing)
2374      - added state for seaice package
2375      - synchronized with main branch
2376    o DIVA:
2377      Modif.s in
2378      - the_main_loop.F
2379      - the_model_main.F
2380      and added cost_final_restore.F cost_final_store.F
2381      o With these changes, it is possible to fully separate
2382        the first forward run to compute the cost function (mdthe_main_loop)
2383        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2384        into separate model executions.
2385        This enables better tuning of DIVA to given queue sizes.
2386      o Loss of cost function value in consecutive DIVA runs is
2387        fixed by storing to 'costfinal' file.
2388      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2389        beginning/end of adjoint integration is accounted for.
2390      The current changes apply to TAF-1.4.26.
2391      TAF has one remaining bug, requiring one manual change
2392      (see MITgcm manual).
2393    o cal: synchronized between MAIN and ecco-branch
2394    
2395    checkpoint48i_post
2396    o Changes to restore differentiability of code w.r.t. previous tag
2397      (mostly adding new routines to make list and replacing
2398      pressure by totPhiHyd).
2399    o Updated and merged grdchk package
2400      - has both ADM and TLM checks
2401      - works for single- and multi-proc.
2402      - output cleaned
2403      - worked successfully for parallel DIVA
2404    o genmake:
2405      - Adding -platform=SP4
2406      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2407    o Modif. for DIVA:
2408      ctrl_unpack should not be called in intermediate DIVA interval.
2409      (similar thing would apply for active files such as
2410      tbar, sbar, psbar, which should not be reinitialised;
2411      only relevant for ecco-branch)
2412    
2413    checkpoint48h_post
2414    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2415    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2416    o Added SEAICE_initialHEFF to pkg/seaice
2417    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2418    
2419    checkpoint48g_post
2420    --- EOS:
2421    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2422      store total Potential in totPhyHyd for diagnostics & EOS.
2423    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2424    --- Pressure/geopotential gradient:
2425    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2426    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2427      ( changes results of global_ocean_pressure )
2428    o NLFS + z-coord.: add eta*Rho' contribution.
2429    o accurate phiHyd when using interface-W at the middle between 2 centers
2430     ( changes results of ideal_2D_oce )
2431    o includes r* 2nd term in potential gradient.
2432    
2433    checkpoint48f_post
2434    Merging from release1_p12:
2435    o Modifications for using pkg/exf with pkg/seaice
2436      - improved description of the various forcing configurations
2437      - added basic radiation bulk formulae to pkg/exf
2438      - units/sign fix for evap computation in exf_getffields.F
2439      - updated verification/global_with_exf/results/output.txt
2440    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2441      (SBO) core products, including oceanic mass, center-of-mass,
2442      angular, and bottom pressure (see pkg/sbo/README.sbo).
2443    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2444      to avoid negative values in shallow regions.
2445      - updated verification/natl_box/results/output.txt
2446      - updated verification/lab_sea/results/output.txt
2447    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2448    o Added useSingleCpuIO option (see PARAMS.h).
2449    o Updated useSingleCpuIO option in mdsio_writefield.F to
2450      work with multi-field files, e.g., for single-file pickup.
2451    o pkg/seaice:
2452      - bug fix in growth.F: QNET for no shortwave case
2453      - added HeffFile for specifying initial sea-ice thickness
2454      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2455    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2456      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2457    o pkg/seaice:
2458      - adjoint-friendly modifications
2459      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2460    
2461    checkpoint48e_post
2462    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2463    o dynamics: change definition of computational domain & adapt mom_fluxform
2464      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2465    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2466        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2467        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2468        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2469        inverted_barometer solid-body.cs-32x32x1
2470      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2471    
2472    checkpoint48d_post
2473    o in preparation for r*:
2474     a) use pre-computed gradient of hydrostatic potential:
2475        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2476     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2477        => affects results of glob_oce_pressure (different truncation error)  
2478      update output.txt of ideal_2D_oce & global_ocean_pressure
2479    
2480    checkpoint48d_pre
2481    o in preparation for r*:
2482      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2483      pass the 2 comp. of the grad. as arguments to momentum S/R.
2484      but for the moment, only used if it does not change the results.
2485    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2486    
2487    checkpoint48c_post
2488    Modifications in treatment of initial flux forcing controls
2489    to avoid extra storing of flux fields.
2490    
2491    checkpoint48c_pre
2492    o Added tidal_basin_2d experiment (currently 1D!)
2493    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2494    
2495    checkpoint48b_post
2496    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2497     (modification to pressure gradient not yet implemented)
2498    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2499      (for U & V) that are used for vertical advection of momentum.
2500    
2501    checkpoint48a_post
2502    o In preparation for r*, use temp. array to compute vertical transport
2503       in flux-form momentum pkg. => change results of few test-exp.
2504      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2505                        lab_sea, natl_box & plume_on_slope
2506    
2507    checkpoint48
2508    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2509    
2510    checkpoint47j_post
2511    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2512    o moved adexch from forward_step to addummy_in_stepping
2513    o added exch in ctrl_map_...
2514    o aveFreq.=0. at end of cost_final to avoid overwrite in
2515      reverse checkpointing loop
2516    o Yet more changes in gmredi:
2517      * adgmredi_calc_tensor
2518        avoiding all recomputation of gmredi_slope_limit
2519      * adgmredi_x/y/rtransport
2520        added flag for excessive storing to avoid recomp. of
2521        u/v/rtans, dTdx/y/z
2522        -> this is not really necessary and very memory-consuming
2523      * adgmredi_slope_psi:
2524        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2525      * gmredi_slope_limit
2526        re-activated full calculation of taperfct for case 'ac02'
2527    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2528    
2529    checkpoint47i_post
2530    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2531    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2532      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2533    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2534    o gmredi: fix few bugs.
2535    
2536    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2537    This will be a good checkpoint to plug into the ecco-branch.
2538    o few modif.'s to get latest version adjointed
2539      (mainly kick out code in ini_linear_phisurf)
2540    o modif's to run adjoint with exactConserv
2541    o case GM_BOLUS_ADVEC should be cleaned
2542      S/R gmredi_slope_psi should be cleaned
2543    o verification/carbon now has exactConserv=.TRUE.
2544    
2545    checkpoint47g_post
2546    o time-average AIM output: becomes independent from statvars time-average
2547      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2548    o After TAF bug fix:
2549      Tested adjoint of gmredi package.
2550      Tests were done with checkpoint47 rather than with latest
2551      checkpoint47f_post since the latter is broken for the adjoint
2552      verification/carbon/ contains both ADM and TLM gradient checks.
2553    Here they are, before they get changed/lost/stolen.
2554    Mostly modif.'s to fix numerical sensitivities.
2555    Gradient checks OK for
2556    - GM_taper_scheme:
2557      * clipping
2558      * ac02
2559      * linear
2560      * glw91
2561      * dm95
2562      * ldd97
2563    - GMREDI_OPTIONS:
2564      * GM_VISBECK_VARIABLE_K
2565      * GM_NON_UNITY_DIAGONAL
2566      * GM_EXTRA_DIAGONAL
2567      * GM_BOLUS_ADVEC
2568    in conjunction with data.gmredi parameters to be checked in
2569    in a few minutes under verification/carbon/code/
2570    
2571    checkpoint47f_post
2572    Merging from release1_p10:
2573    o modifications for using pkg/exf with pkg/seaice
2574      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2575        and SEAICE_EXTERNAL_FLUXES
2576      - pkg/exf CPP options EXF_READ_EVAP and
2577        EXF_NO_BULK_COMPUTATIONS
2578      - usage examples are Experiments 8 and 9 in
2579        verification/lab_sea/README
2580      - verification/lab_sea default experiment now uses
2581        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2582    
2583    checkpoint47e_post
2584    o created a tag prior to creating a branch
2585    
2586    checkpoint47d_post
2587    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2588      at the bottom boundary had an erroneous half slip boundary condition
2589    o added bottom drag and no slip boundary condition capabilities to
2590      oceanic pressure coordinates code
2591    o added new verification experiment global_ocean_pressure, this experiment is
2592      also described in the tutorial section of the manual
2593    checkpoint47d_pre
2594    
2595    checkpoint47c_post
2596    o Added a verification experiment for a global cubed-sphere ocean run
2597      -  verification/global_ocean.cubed32x32x30
2598      -  uses pkg/therm_seaice and pkg/bulk_forcing
2599    
2600    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2601    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2602      when using P-coordinate; only implemented for atmospheric config.
2603    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2604      NOTES: requires option NONLIN_FRSURF to be "#define".
2605    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2606    
2607    checkpoint47b_post
2608    Merging from release1_p9:
2609    o pkg/seaice
2610      - removed GOTO's and added taf directives
2611      - double precision constants to reduce the g77 (Linux)
2612        to F77 (SGI) differences reported in release1_p8
2613    o tools/genmake
2614      - added SGI options
2615    o verification/testscript
2616      - updated to that of checkpoint47a_post
2617    o verification/global_ocean.90x40x15/input/eedata
2618      - modified for SGI f77 compatibility
2619    o verification/lab_sea
2620      - added description of sea-ice model
2621      - added missing matlab routines
2622      - added test of thermodynamics parallelization
2623    
2624    checkpoint47a_post
2625    o new pkg: aim_v23
2626     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2627       for now, keep the same surface forcing as before.
2628     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2629     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2630     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2631    o add diagnostic of surface correction term in monitor output
2632    
2633    o bulk_force and therm_seaice
2634    - Two packages:  bulk_force (Bulk forcing)
2635      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2636    - Earlier integration from Stephaine Dutkiewicz
2637      and Patrick Heimbach.
2638    - Two ifdef statements for compile time,
2639       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2640    
2641    checkpoint47
2642    differentiable version of checkpoint46n_post
2643    o bug fix in quasihydrostaticterms
2644    o * "clean" adjoint code (in terms of extensive recomputations)
2645        can now be obtained for all GMREDI options (i.e. for
2646        - GM_VISBECK_VARIABLE_K
2647        - GM_NON_UNITY_DIAGONAL
2648        - GM_EXTRA_DIAGONAL
2649        - GM_BOLUS_ADVEC )
2650      * However, wrong gradient check problem remains unsolved.
2651      * New CPP options have been introduced for different
2652        tapering schemes
2653    o external_fields_load now part of differentiation list
2654    o pressure needs multiple storing;
2655      would be nice to have store_pressure at beginning or
2656      end of forward_step, e.g. by having phiHyd global (5-dim.)
2657      (NB: pressure is needed for certain cases in find_rho,
2658      which is also invoked through convective_adjustment).
2659    o recomputations in find_rho for cases
2660     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2661    o #define ATMOSPHERIC_LOADING should be differentiable
2662    o ini_forcing shifted to begining of initialise_varia
2663    o Incorporating QNVS line search routines into MITgcm
2664      (this is separate code, and therefore not under pkg)
2665      lsopt/, optim/
2666    o Updated verification/carbon/
2667      - #define GM_VISBECK_VARIABLE_K
2668      - GM_taper_scheme    = 'ldd97'    
2669    
2670    checkpoint46n_post
2671    Merging from release1_p8:
2672    o verification/natl_box:
2673      updating new external_fields_load routine
2674    o New package: pkg/seaice
2675      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2676      The sea-ice code is based on Hibler (1979-1980).
2677      Two sea-ice dynamic solvers, ADI and LSR, are included.
2678      In addition to computing prognostic sea-ice variables and diagnosing
2679      the forcing/external data fields that drive the ocean model,
2680      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2681      The implied surface heat flux is then stored in variable
2682      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2683      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2684      non-local transport term.  Because this call precedes model
2685      thermodynamics, temperature under sea-ice may not be "exactly" at
2686      the freezing point by the time theta is dumped or time-averaged.
2687      N.B.: fairly large differences in accuracy occur across
2688            different platforms/compilers; comparison between
2689            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2690            generated output gives:
2691       T           S           U           V
2692      C D M    c        m  s        m  s        m  s        m  s
2693      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2694      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2695      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2696    
2697      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2698    o GAD:
2699      - generated new common blocks to account for call of
2700        same gad routines with differing traceridentities
2701        (needed to modify tracerIdentity indices in GAD.h)
2702      - generated separate common blocks for case useCubedSphereExchange
2703        (Department of Futurology)
2704      - parameter lists to gmredi_?transport: added tracerIdentity
2705      - added new key indices to tamc.h
2706    o external_fields_load:
2707      - added this routine to TAF list
2708      - needed to make some common blocks global and additional storing
2709        along the same lines as exf package (checkpoint_lev?_directives.h)
2710    o exf:
2711      updated external forcing package
2712      - bug fixes carried over from ecco-branch
2713        (missing OBCS_OPTIONS.h in two routines)
2714      - enable easy to use "no forcing".
2715      - added exf I/O for atmospheric loading
2716      - added exf I/O for runoff data
2717      - transfered scaling between exf <-> MITgcm to exf namelist
2718    o Adding new verification experiment global_with_exf.
2719      This verification experiment is almost identical to the
2720      global_ocean.90x40x15 experiment, except that it uses
2721      the exf (and cal) package instead of the
2722      external_fields_load routine (cf README file).
2723    
2724    checkpoint46m_post
2725    o modified testscript to return -- when there are no lines of "%MON" output
2726    o added new flag "quasiHydrostatic" for QH mode
2727      and new routine quasihydrostaticterms()
2728    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2729      New routine: mom_u_coriolis_nh()
2730    o fixed sign of non-hydrostatic metric terms in u and v equations.
2731      Depend on correct sign of gravitySign.
2732    o added work.pc* to .cvsignore in aim directories using ifc
2733    o introduced flag for controllin non-hydrostatic metric terms
2734    o removed gravitySign from PARM04
2735    o switched to g77/ifc from pgf77 in aim experiments
2736    
2737    checkpoint46l_post
2738    o made convective adjustment work with pressure coordinates:
2739     - changed the direction of k-loop in convective_adjustment.F for the
2740       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
2741     - adjusted the reference pressure k-index in convective_adjustment.F
2742     - adjusted the convection condition in convect.F (in analogy to
2743       calc_ivdc.F)
2744     - convective_adjustment no longer computes anything on the halos
2745     - removed the warnings about negative salinity from find_rho.F and
2746       find_alpha.F; instead the new routine look_for_neg_salinity, called
2747       at the beginning of find_rho, find_alpha, and find_beta, does a
2748       check of the entire slice, if CPP-option
2749       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
2750    checkpoint46l_pre
2751    
2752    checkpoint46k_post
2753    o fixed the verification/global_ocean.90x40x15 experiment:
2754     - new bathymetry (the world according to A., JMC, and M.)
2755     - new initial fields and forcing fields (*.bin files)
2756     - new POLY3.COEFFS (for the next release one should switch to a full
2757       equation of state: JMD95P or MDJWF)
2758     - fixed several errors and redundancies in the data file
2759     - experiment uses looped cells
2760     - added matlab directory with diagnostic scripts for plotting of output
2761    
2762    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
2763     - read AIM physics parameters from a file (data.aimphys)
2764     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
2765    
2766    checkpoint46j_post
2767    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
2768    o move wVel computation at the end of the time step, in S/R integr_continuity
2769    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
2770    o update timeave pkg for wVel diagnostic.
2771    checkpoint46j_pre
2772    
2773    checkpoint46i_post
2774    o Clean up AIM package (and keep the results unchanged):
2775      include CPP_OPTION and use IMPLICT NONE in all routines ;
2776      declare all the variables _RL ; use _d 0 for all numerical constants.
2777      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
2778    
2779    checkpoint46h_post
2780    o cleaned up the use of rhoNil and rhoConst.
2781      - rhoNil should only appear in the LINEAR equation of state, everywhere
2782        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
2783        and the dynamical equations are all divided by rhoConst
2784    o introduced new parameter rhoConstFresh, a reference density of fresh
2785      water, to remove the fresh water flux's dependence on rhoNil. The default
2786      value is 999.8 kg/m^3
2787    o cleanup up external_forcing.F and external_forcing_surf.F
2788      - can now be used by both OCEANIC and OCEANICP
2789    checkpoint46h_pre
2790    
2791     Added code to convert surface volume flux (fresh water) into
2792     a mass flux when using P coordinates in the ocean (OCEANICP).
2793     Note: It assumes you have set rho0=rhoConst=density of fresh water.
2794    
2795    checkpoint46g_post
2796    o Include a new diagnostic variable phiHydLow for the ocean model
2797      - in z-coordinates, it is the bottom pressure anomaly
2798      - in p-coordinates, it is the sea surface elevation
2799      - in both cases, these variable have global drift, reflecting the mass
2800        drift in z-coordinates and the volume drift in p-coordinates
2801      - included time averaging for phiHydLow, be aware of the drift!
2802    o depth-dependent computation of Bo_surf for pressure coordinates
2803      in the ocean (buoyancyRelation='OCEANICP')
2804      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
2805        Theta, Salinity, and Pressure in the parameter list. This routine is
2806        presently contained in find_rho.F. This routine does not give the
2807        correct density for 'POLY3', which would be a z-dependent reference
2808        density.
2809    o cleaned up find_rho
2810      - removed obsolete 'eqn' from the parameter list.
2811    o added two new verification experiments: gop and goz
2812      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
2813    checkpoint46g_pre
2814    
2815    checkpoint46f_post
2816    o Enable tangent linear (forward mode) gradient checks:
2817      - extended active file handling to g_... files
2818      - added TANGENT_SIMULATION to theSimulationMode
2819      - extended grdchk package accordingly
2820    o added tangent linear setup in verification/carbon/code_ftl
2821    o added adjoint setup in verification/front_relax/code_ad
2822    
2823    checkpoint46e_post
2824    o Added new equation of state -> MDJWF
2825      - EOS of McDougall et al., 2002, JAOT, submitted
2826      - caveat: the equation of state is only valid for a smaller (more
2827        realistic?) range of values than JMD95P/Z and UNESCO
2828      - added masks to the calculation of pressure in store_pressure
2829      - added more check values for density in check_eos (ini_eos.F), some of
2830        the old check values are out of the range of the MDJWF-eos, so don't
2831        expect perfect matches for those
2832    checkpoint46e_pre
2833    
2834    checkpoint46d_post
2835    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
2836      'OCEANICP', also initialised field pressure correctly in ini_eos in the
2837      case of pressure coordinates. eosType='JMD95Z' in
2838      combination with buoyancyRelation='OCEANICP' now causes an error.
2839    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2840      in find_alpha/beta.
2841    checkpoint46d_pre
2842    
2843    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2844      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
2845    
2846    checkpoint46c_post
2847    o Changes necessary for ocean in p-coordinates
2848     -  Added new buoyancy relation = 'OCEANICP'
2849     -  Added new parameters = gravitySign (this used to be contained inside
2850        the factor dRdZ which I added when we first switched to R coordinates).
2851     X GM/Redi is not compatible (yet)
2852     X bottom drag and no-slip need to be debugged.
2853    checkpoint46c_pre
2854    
2855    checkpoint46b_post
2856    o Added new equation of state -> JMD95Z and JMD95P
2857      - EOS of Jackett and McDougall, 1995, JAOT
2858      - moved all EOS parameters into EOS.h
2859      - new routines ini_eos.F, store_pressure.F
2860    o Added UNESCO EOS, but not recommended because it requires
2861      in-situ temperature (see JMD95)
2862    o Modified formatting for knudsen2.f in utils/knudsen2 and added
2863      unesco.f to be used with POLY3
2864    checkpoint46b_pre
2865    
2866    checkpoint46a_post
2867    o Added (atmospheric) pressure loading
2868      - new field in FFIELDS.h, etc...
2869      - new cpp flag ATMOSPHERIC_LOADING
2870    o Changed hFacC to _hFacC in calc_phi_hyd.F
2871    o Added SHORTWAVE_HEATING to some files for consistency
2872    checkpoint46a_pre
2873    
2874    checkpoint46
2875    further merges from release1_p5
2876    o new ctrl package
2877      - adopted from ECCO environment to enable optimization
2878      - added Eliassen Palm fluxes to controls
2879    o added Eliassen Palm flux controls to gradient check package
2880    o cost package
2881      - Compatible with new ctrl package
2882      - added Eliassen Palm cost hooks
2883      - modif's of existing cost functions
2884    o Adjoint-related bug fixes in kpp:
2885      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
2886      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
2887    o autodiff package
2888      - flow directives:
2889        + new for S/R do_the_model_io
2890        + enhanced for S/R checkpoint
2891        + new gmredi.flow
2892      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
2893        disable adcommon.h/g_common.h by default.
2894      - fixed problem for adjoint of global_max
2895    o modified verification/carbon/
2896    o New setup for adjoint of global_ocean
2897    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
2898    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
2899    o incorporated hooks for sponge layer code (external_forcing.F)
2900    
2901    checkpoint45d_post
2902    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
2903    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
2904      (affects plume_on_slope "cg2d" output)
2905    o add new parameter deltaTfreesurf for free-surface time stepping
2906    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
2907    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
2908    o change phiMin in exp1 (to agree with documentation)
2909    o add new flags:
2910     - T,S forcing inside/outside Adams-Bashforth
2911     - turn off temp,salt advection and/or forcing
2912     - for each tracer, define internal flag for multiDimAdvection & A-B
2913    o monitor: change definition of KE to check conservation of Energy
2914    
2915    checkpoint45c_post
2916    o Removed f90 comments ("!")
2917    o Modified initialisations to enable exf package for MITgcm
2918      (without invoking ECCO_PACKAGE).
2919    o modifications to gradient check package (Martin Losch)
2920      - enable centered differences
2921      - modified format of standard output
2922    
2923    checkpoint45b_post
2924    o cleaned exchange calls in cg2d
2925    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
2926    o included CPP option SINGLE_LAYER_MODE in thermodynamics
2927      to configure barotropic setup (Martin Losch)
2928    o moved some initialisations within bi,bj loop in dynamics
2929      (TAF flow dependency)
2930    o in initialise_varia, moved call packages_init_variables
2931      before convective_adjustment_init
2932      (corresponding adjustment of TAF tape initialisation).
2933    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
2934    
2935    checkpoint45a_post
2936    o compute Rho over the whole domain (extend iMin,jMin indices)
2937    o specific exchange for X-slice domain (case Ny=1)
2938    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
2939    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
2940    
2941    checkpoint44h_post = checkpoint45
2942    o Fix to restore differentiability:
2943      place at which packages_init_variables is called in
2944      initialise_varia is crucial for reverse control flow.
2945    o modifications in GMRedi to enable stable adjoint
2946      (corresponding modif's in thermodynamics, dynamics)
2947    o added missing hook for sponge layer code in external_forcing
2948    o modified test cost functions
2949    o storing in gad_advection (plus removal of write(0,*)!
2950    o missing headers TR1.h added in convective_adjustment routines
2951    o errorMessageUnit set non-equal zero in eeboot
2952      (conflict on some platforms, e.g. IBM SP3)
2953    o modified carbon verif.
2954    
2955    checkpoint44h_pre
2956    o vertical grid option: allow to put the Interface at the middle between
2957      2 cell-centers ; replace delZ in pkg/kpp by drF.
2958    o GM Advective form: Tracers are advected using the residual transport (=
2959      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
2960    
2961    checkpoint44g_post
2962    o fix surface correction term in multiDimAdvection (affects plume_on_slope
2963      results) ; ifdef missing in thermodynamics.F
2964    
2965    checkpoint44f_pre,checkpoint44f_post
2966    o added PTRACERS package
2967      This allows an arbitrary number of passive tracers to be integrated
2968      forward simultaneously with the dynamicaly model.
2969      + Implemented so far:
2970        - basic forward algorithm (time-stepping, advection, diffusion, convection)
2971        - I/O and checkpointing
2972        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
2973      + Not implemented so far:
2974        - KPP
2975        - OBCS
2976      + No specific example supplied (yet) but global_ocean.90x40x15 has the
2977        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
2978        line in data.pkg.
2979      + This package is disabled by default since it increases storage.
2980    
2981    
2982    o testscript: added -cleanup option
2983    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
2984                 b) enable to filter 2D fields.
2985    
2986    checkpoint44e_pre,post
2987    o re-wrote convective adjustment to use pre-calculated weights
2988      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
2989      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
2990      Original calls to convect() still in place.
2991    
2992    chkpt44d_pre,post
2993    o added missing EXCLUDE_MONITOR flags
2994    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
2995      (incompatible typ in MIN/MAX expressions caused problems
2996      on IBM SP3)
2997    o in genmake added variable MAKEDEPEND
2998      plus resetting for case SunOS
2999    o added timer_stats.c routine for IBM SP3
3000    o removed variables in dynamics
3001    !!! I forgot to create tag chkpt44d_pre !!!
3002    !!! But chkpt44d_pre = chkpt44c_post    !!!
3003    
3004    o real fresh water flux implemented with non-linear free-surface.
3005    
3006    chkpt44c_pre,post
3007    o few fix (mask in shap_s2, EmPmR in external_field_load,
3008      USE_NATURAL_BCS in solve_for_P);
3009    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
3010    
3011    checkpoint44b_pre/_post
3012    o merge of relevant stuff from the ecco-branch:
3013      - genmake: removed $S64 overwrite for case SunOS
3014      - pkg/exf: update and corrections for field swapping and obcs
3015      - pkg/ecco: parameter lists for the_model_main, the_main_loop
3016                  harmonized between ECCO and MITgcm
3017      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
3018                      updated checkpointing_lev... lists for obcs
3019      - model/src: minor changes in forward_step, plot_field
3020                   added directive for divided adjoint in the_main_loop
3021      - pkg/mdsio: added mdsio_gl_slice
3022    
3023    o check parameters & config (chkpt44a_pre,post)
3024    o OBC and NonLin_FrSurf.
3025    
3026    checkpoint44
3027    o fix bug in mom_vi_del2uv
3028    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
3029    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
3030    o update AIM experiments (NCEP input files)
3031    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
3032    o added some stuff for AD
3033    
3034    checkpoint43
3035    o added two new advection tests
3036    o added global 4x4 degree ocean test
3037    o added test of H&S94 with free surface on cube
3038    o some final mods for gradient check, adjoint,...
3039    
3040    checkpoint42
3041      Fixed AD-related problems:
3042    o Store directives up-to-date with re-arranged Adams-Bashforth
3043      (mainly thermodynamics.F)
3044    o New store directives for multi-dim. advection schemes
3045      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
3046      * new common block and key passkey
3047      (mainly gad_advection.F)
3048    o Modified store directives for split of dynamics/thermodynamics
3049      for the case ALLOW_KPP
3050    o Cleaned argument list for timestep_tracer.F
3051    
3052    checkpoint41
3053    o re-formatted/added comments in prologues of key subroutines
3054      to work with protex
3055    
3056    checkpoint40
3057    o moved calc_gs, calc_gt and calc_tr1 back to model/src
3058    o added FLT (floats) package from Arne along with demo. experiment
3059    o re-arranged Adams-Bashforth scheme for tracers to allow easier
3060      implementation of forward-in-time forcing terms
3061    o more mods for non-linear free-surface including new variable
3062    o modified multi-dim method to work on cube
3063    o bug fix in KPP (from DM)
3064    
3065    checkpoint40pre9
3066    o added DST advection schemes
3067    o fix MPI bug on SGI's
3068    o modifications for non-linear free-surface
3069    o fixed conditionals for fixed flow/passive tracer only mode
3070    o added tension/strain form of stress tensor
3071    o changes to commenting of arguments for TAF/TAMC
3072    o added/updated many matlab scripts
3073    o added multi-dimensional advection method for tracers
3074      
3075    checkpoint40pre8
3076    o new package rw/
3077      Added method for dumping intermediate local arrays:
3078      mdsio_writetile - same as mdsio_writefield except works from inside
3079                        bi,bj loop
3080      mdsio_writelocal - same as mdsio_writetile except works for local
3081                         arrays
3082      write_local_r? - higher-level wrapper for mdsio_writelocal
3083      Controlled by diagFreq. Defaults to zero (ie. no dumps)
3084      Example given at end of mom_vecinv.F that dumps some local arrays.
3085    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
3086      control flux-form versus vector invariant code.
3087      Switch is runtime flag vectorInvariantMomentum (defaults to false)
3088      or genmake -DISABLE ...
3089    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
3090      (additional storing is now needed for case vecinv;
3091      currently nothing implemented to switch this storing off
3092      in case fluxform is used since no CPP flag available).
3093    
3094    checkpoint40pre7
3095    o bug fix in dynamics.F
3096      calc_viscosity called before k=1,Nr loop.
3097    o added some #ifdef's ALLOW_PASSIVE_TRACER
3098    o cleaned initialisations in ctrl_map_ini
3099      related to TAF
3100    
3101    checkpoint40pre6
3102    o split dynamics into thermodynamics & dynamics
3103    o corresponding split of calc_diffusivity into
3104      calc_diffusivity, calc_viscosity
3105      (kpp_calc_diff, kpp_calc_visc).
3106    o Added diffkr, kapgm to control variables
3107    o bug fix in gmredi_slope_limit for ldd97
3108    
3109    checkpoint40pre5
3110    o proper initialization of Adams-Bashforth time stepping
3111      + uses forward step for very first step of model (iter=0)
3112    o re-generated *all* output since almost all output is modified by this
3113      change (sorry but we've been putting this one off for about 2 years)
3114      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
3115        *not* regenerated since they are already out of date and I don't
3116        want to create the impression that they are suddenly working.
3117    o removed KAP stuff for DEC's
3118    o modified/added many .cvsignore files in */code and */input
3119    o added new expt "solid-body.cs-32x32x1"
3120      + this uses an alternative form of ini_curvilinear_grid.F which
3121        is not necessarily any better than the current one...
3122    
3123    checkpoint40pre4
3124    o added re-initialisations of utrans,vtrans,rtrans in
3125      calc_common_factors which are crucial for TAF.
3126    o extended iMin,jMin range for calc_common_factors,
3127      calc_diffusivity
3128    o added option ALLOW_PASSIVE_TRACER
3129    o a few minor updates and fixes
3130    
3131    checkpoint40pre3
3132    o created calc_gtr1.F for gad package
3133    o split the_main_loop and re-introduced forward_step
3134    o some recomputations of nIter0 for TAMC
3135    
3136    checkpoint40pre2
3137    o Updated to latest branch of AJA, JMC
3138    o Added gradient check package
3139    o Added routines for passive tracer handling
3140    o Added carbon sequestration sensitivity experiment
3141    
3142    checkpoint39
3143     o Modifications and fixes to support TAMC
3144       (mainly missing or wrong directives)
3145     o Corrected common blocks when fooling TAMC to produce adjoint I/O
3146       in addummy_in_stepping
3147     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
3148     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
3149     o Included following packages:
3150       cal: calendar
3151       exf: external forcing
3152       ecco: essential routines to control use of cal, exf
3153             (NB: this is not the full ECCO environment)
3154     o disabled some packages by default in genmake
3155    
3156    checkpoint38
3157     o see notes_c37_adj.txt
3158     o corrected wrong layer index in external_forcing_t
3159     o replaced the_main_loop/forward_step by the_main_loop
3160     o removed forceoutput from write_state
3161       (replaced criteria for initial/final state)
3162     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
3163    
3164    checkpoint37
3165     o mdsio.F routine split and packaged in pkg/mdsio
3166       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
3167        used unless genmake -disable=mdsio)
3168     o allow a more precise surface-geopotential gradient for the atmosphere
3169       taking into account the change in space of Alpha (=1/rho) at the surface.
3170     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
3171       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
3172     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
3173       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
3174       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
3175     o Time-Average diagnostics defined as a pseudo package "timeave".
3176     o pickup files : old pickup (before c35) did not work with new code (c35
3177       and after) unless activating 2 commented lines in initialise-varia.
3178     o Non-Hydrostatic pickup file Pb fixed.
3179     o bug with Rigid-lid version (since c35) fixed.  
3180    
3181    checkpoint36
3182     o implement Crank-Nickelson barotropic time-stepping
3183     o recover Time-Average diagnostics
3184     o fix Pb in checkpoint (PR#19)
3185     o AIM become a standard package ; clean unused CPP_kees
3186    
3187    checkpoint35
3188     o subtantial rewrite of dynamics.f
3189     o allows staggered time-stepping
3190     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
3191     o added bottom drag (linear + quadratic)
3192    
3193    checkpoint34
3194     o Modified exchange routines for correct reverse simulation.
3195     o Added verification output to comply with bug fix in impldiff.F
3196       as of c33 (exp2, natl_box).
3197     o Corrected store directives in dynamics.F
3198     o Corrected array boundaries in impldiff.F
3199     o Corrected array dimensions in gmredi.
3200       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
3201     o Added routine GLOBAL_SUM_INT to global_sum.F
3202     o Added mdsio_gl.F for ECCO purposes.
3203    
3204    checkpoint33
3205     o Fixed bug in lower BC in impldiff.F
3206     o Fixed confusion about units of forcing arrays in FFIELDS.h
3207       namely Fu,Fv,Qnet,Qsw,EmPmR:
3208       - Removed verification/natl_box/code/external_fields_scale.F
3209         (did not differ from that in model/src)
3210       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
3211         (see FFIELDS.h for description)
3212       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
3213         kpp_calc.F and kpp_transport_t.F
3214       - Removed model/src/external_fields_scale.F and calls to it
3215       - verification/natl_box uses flux data with "atmospheric" sign so
3216         a special version of external_fields_load.F is used to
3217         change the data as it's read in. This way, the arrays
3218         have the right units and signs at all times tha a user could
3219         possibly use them.
3220     o Corrected genmake to delete a temporary file during configuration
3221    
3222    checkpoint32
3223     o Scaling of forcing fields moved from external_forcing.F to
3224       external_fields_scale.F, called directly after loading fields.
3225     o Surface relaxation terms added to surface tendency fields in
3226       extra subroutine.
3227     o impldiff.F changed to avoid storing by TAMC of huge intermediate
3228       fields.
3229     o Changes in GMRedi to comply with packaging structure.
3230     o Modifications and bug fixes in KPP package.
3231     o Verification experiment for KPP added (verification/nat_box/)
3232    
3233    checkpoint31
3234     o Packages interface brought in line with defined standard
3235       -> new routines packages_...F
3236       -> changes in initialise_fixed.F, initialise_varia.F
3237       -> enables initialisation interface for ECCO package
3238     o Rescaling of external forcing fields immediately after read
3239       (removed from external_forcing.F)
3240       -> new: surface_fields_scale.F
3241       -> affects ini_foorcing.F, external_fields_load.F
3242     o Computation of surface tendencies before tendency updates.
3243       -> new: external_forcing_surf.F
3244     o Change of variable names useGMRedi, useKPP, useECCO
3245     o Further changes in dynamics.F, impldiff.F for TAMC
3246     o Tested for experiments 0, 2, 4.
3247       - not yet tested for GMRedi.
3248       - not yet tested for KPP.
3249    
3250    checkpoint30
3251     o Updates for OBCs
3252     o New experiment for test OBCs (internal_wave)
3253     o New output.txt in verification/exp4/results/
3254     o Updates for KPP: calculation of viscosity corrected, new variables
3255       kpp_dumpFreq and kpp_taveFreq
3256     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
3257       and entry for T90 in genmake
3258    
3259    checkpoint29
3260     o packaged KPP and GM/Redi
3261    
3262    checkpoint28
3263     o Corrected initialization of hFacMin for difference vertical coordinates
3264     o Modified calculation of partial cell thickness to more robust algorithm
3265     o config_summary.F: replaced write_1D_... by write_0D_...
3266       read_write.F: added subroutines write_0D_...
3267     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
3268       included some initialisations required for TAMC.
3269     o routine calc_isoslopes: modified sqrt computation to make it
3270       differentiable for zero argument.
3271     o routines dynamics, impldiff:
3272       included store directives and tape key computations required for TAMC.
3273     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
3274    
3275    checkpoint27
3276     o fixed calc_isoslopes() to so that cancellation of terms in tensor
3277       formulation works properly with variable resolution.
3278     o restructured the calling tree between the_model_main() and dynamics()
3279     o split initialise() into initialise_fixed() and initialise_varia()
3280     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
3281       in new routine ini_psurf()
3282    
3283    checkpoint26
3284     o moved some #ifdef in optional routines to encompass everything
3285       except the argument declarations. This was using up some memory.
3286     o fixed macros like _ADT to work with both versions of Linux cpp
3287     o cleaned up some unused and uninitialized variables
3288       (helps when debugging with strict compile options)
3289     o split up CPP_EEOPTIONS.h into options and macros
3290       (macros are now in eesupp/inc/CPP_EEMACROS.h)
3291     o patch for 2 processor JAM mode
3292    
3293    checkpoint25
3294     o updates for OBCs and NH
3295     o dramatically reduced memory usage
3296     o added "JAM" routines for use on Artic network
3297     o parameterization of convection by implicit vertical diffusion
3298     o added a diagnostic of convective index
3299     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
3300       (this is was partly for OBCs and NH but also in anticipation of
3301        an explicit free-surface option)
3302     o initial state input files for U and V
3303    
3304    checkpoint24
3305     o Removed some spurious "REAL"s
3306     o Updated KPP to latest version from JPL
3307     o Added a COS(latitude) in horizontal viscosity
3308    
3309    checkpoint23
3310     o Added del^4 diffusion for salt and temperature
3311     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
3312    
3313    checkpoint22
3314     o Made many small changes: implicit none, format(i5), etc...
3315     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
3316    
3317    checkpoint21
3318     o Introduced new I/O package that supports direct-access records (mdsio.F)
3319     o Split-up mid-level I/O routines
3320     o Updated input data for experiments 0,1,2,4 and 5
3321     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
3322    
3323    checkpoint20
3324     o Tidied up open-boundaries some more
3325     o Added non-hydrostatic code
3326     o Fixed some input data
3327     o Modified MPI start-up to work in "coupled" context.
3328    
3329    checkpoint19
3330     o Tidied up directory structure for verification experiments.
3331     o Added new code for open boundaries.
3332     o Corrected advective terms near boundaries.
3333     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
3334     o Implemented free-slip/no-slip BCs and del^4 dissipation.
3335     o Split default parameters out of ini_parms.F into set_defaults.F.
3336    
3337    checkpoint18
3338     o Further changes for optional code generation with
3339       CPP - ugh!
3340    
3341  checkpoint17  checkpoint17
3342   o Beginning to incorporating modularity   o Beginning to incorporating modularity
3343     for supporting atmos. and ocean configs.     for supporting atmos. and ocean configs.

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