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revision 1.232 by jmc, Wed Dec 31 20:29:54 2003 UTC revision 1.1100 by jmc, Tue May 19 22:57:55 2009 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/seaice:
8       put exchanged variable in (local) common block for MPI+Multi-Threads
9       to work (necessary with exch1, and for now with exch2 too).
10    o verification: to get more experiments tested with mpi, mth and mpi+mth,
11      change tiling of:
12       aim.5l_Equatorial_Channel, aim.5l_LatLon, dome, exp4, global_ocean.90x40x15,
13       hs94.cs-32x32x5, MLAdjust, offline_exf_seaice & tutorial_plume_on_slope
14      update output of exp:
15       exp4, global_ocean.90x40x15(+.dwslp), MLAdjust(all 5),
16       tutorial_plume_on_slope and hs94.cs-32x32x5 (use default rotationPeriod)
17      + ideal_2D_ocean: use default rotation period + test Global_Sum_SINGLECPU
18                       (note: output.txt generated on faulks using only 1 tile)
19    o eesupp & mdsio (SingleCpuIO):
20     - remove MISSING_TILE_IO (from MDSIO_OPTIONS.h), replaced by run-time
21       parameter "W2_useE2ioLayOut" (read from file "data.exch2").
22       Note: was not effective for globalFile & useSingleCpuIO=F; now fixed.
23     - move MDSIO_SCPU.h (pkg/mdsio) to EEBUFF_SCPU.h (eesupp/inc).
24     - fix GLOBAL_SUM_SINGLECPU when using Exch2; re-use same buffers and same
25       gather/scatter S/R as with SingleCpuIO (=> 1 less 2D global RL array).
26    o pkg/exch2:
27     - new code to set-up W2-Exch2 topology (replace matlab-topology-generator):
28       read parameter file "data.exch2" if it exists; otherwise try default regular
29       cube without blank-tile; new header file "W2_EXCH2_SIZE.h";
30     - update matlab-topology-generator (exch2_setup_cs6_print.m) to be compatible
31       with new code (not to be used, just as a backup solution).
32     - add examples (e.g., for lat-lon-cap_120) of parameter file "data.exch2"
33       in utils/exch2/input.
34    
35    checkpoint61n
36    o eesupp & mdsio (SingleCpuIO):
37      - move mapping to global io-buffer inside gather_2d/scater_2d: this save
38        memory (1 less 2D global RL array); skip 1 buffer copy; and only send/
39        receive real*4 array (instead of real*8) to read/write 32.bit files.
40        (new template for gather_2d/scater_2d, new set of S/R MDS_PASS_R4,8toRL,S
41         and remove new mapping S/R)
42    o pkg/mdsio: in preparation for topology-generator within pkg/exch2:
43      - Change declaration of SingleCpuIO buffer, reduced to only 1 dim.:
44        xyBuffer_size, which is set to W2_ioBufferSize from W2_EXCH2_PARAMS.h
45        when using exch2. Add S/R to map global io-buffer to global model array.
46      - uses exch2_global_Nx,y instead of exch2_domain_nxt,nyt.
47    
48    checkpoint61m
49    o write_utils : change WRITE_1D_R8 to WRITE_1D_RL
50      and add 3 other S/R for other types (R4,R8,RS).
51      Change calls to WRITE_0D/1D_R[4,8,S,L] to match the type of argument.
52    o eesupp/inc/CPP_EEMACROS.h (EXCH & GLOBAL_SUM/MAX macros):
53     - ensure suffix (_R4,_R8,_RS,_RL) correspondance between macro and S/R ;
54     - reduce number of macro definitions (keep only those which are used);
55       can always call directly the corrresponding S/R if needed.
56     - everywhere in the code: change macros (EXCH & GLOBAL_SUM/MAX) suffix
57       _R4/_R8 to _RS/_RL when applied to _RS/_RL variable.
58     Fixed wrong type of arg in:
59       atm2d/put_ocnvars.F cheapaml/cheapaml.F ocn_compon_interf/ocn_apply_import.F
60       ctrl/ctrl_map_ini_ecco.F seaice/seaice_do_diags.F seaice/seaice_model.F
61     To fix: global_sum of var in common block is wrong (multi-threaded) in:
62       dic/dic_atmos.F ebm/ebm_area_t.F ebm/ebm_zonalmean.F sbo/sbo_calc.F
63     To fix: aim_v23/aim_do_co2.F (BARRIER & GLOBAL_SUM within bi,bj loops)
64    o adjustment.cs-32x32x1: test "blank tiles" when compiling with mpi; 2nd
65      "nlfs" mpi test is going to stop when checking for unconnected tile egdes.
66    o eesupp/src: new S/R to stop everyone when 1 (or more) Proc. find an error
67    o pkg/exch2: new S/R EXCH2_CHECK_DEPTHS to check that unconnected tile
68      edges are closed (zero depth); might happen with "blank tiles";
69      for now, disabled if using OBCS.
70    o tools/gemake2: delete modifs from March 27-29 2009 (with option "-mpi":
71      link *_mpi files from "MODS" dir) to return to a strait-forward behavior.
72    o move read_write.F to write_utils.F ; new parameter (maxLengthPrt1D)
73      to reduce length of 1.D array print in STDOUT.
74    o adjustment.cs-32x32x1: changed to oceanic test with 1 continent
75      + use 48 tiles (16x8): this will allow to test "blank tiles".
76    o start to test MPI + multi-threaded (change testreport to skip tests
77      where number of tiles do not match).
78    o genmake2: add option "-omp" to turn on Open-MP ;
79      passed to testreport (if using -mth) ; merge few (*+mth) optfiles.
80    o pkg/exch2 (+ utils/exch2): ignore blank tiles (instead of removing them)
81      and keep the original tile numbering. Note: compatible with old
82      W2_EXCH2_TOPOLOGY.h & w2_e2setup.F topology files.
83    
84    checkpoint61l
85    o Overlaps had been forgotten in calculating ijk keys : fixed
86    o fix cyrus makedepend for gcc 4.4
87    o experiment fizhi-cs-aqualev20:
88      switching to new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE)
89      and generate new output. Note: new output is much closer to the old
90      one (v1.8) generated with pgf77 -O2 on Mar 14 2007 than it is from
91      the previous one (v1.9) generated with pgf77 -O0 on Jun 13 2007.
92    o pkg/fizhi:
93     - change to avoid indices going deliberately over array-bounds
94     - remove unnecessary MPI stuff
95     - perpetual spring equinox with "#define FIZHI_USE_FIXED_DAY"
96     - new version of S/R GETPWHERE available with #define TRY_NEW_GETPWHERE:
97       does not go over array-bounds and therefore returns reliable output.
98     - in fizhi_driver.F & fizhi_turb.F, fix "get_alarm" calls:
99       this S/R has 4 output arguments, which are used inside "get_alarm";
100       when it is called with the same variable "ndum" in place of several
101       output arguments, this produces weird side effect inside "get_alarm"
102      (e.g., datein=dates(n) is overwritten by timein=times(n) since both
103       datein & timein, resp. 2nd and 3rd arg., are pointed to the same "ndum"
104       address) and produces error.
105    o tools/gemake2: (March 27-29 2009)
106      with option "-mpi": link *_mpi files from "MODS" dir (this is what
107      testreport does).
108    o lab_sea experiment: change from 2x1 tiles to 2x2 tiles and regenerate output
109    o pkg/seaice: fix bug in new version of S/R SEAICE_LSR.F:
110       update lab_sea.lsr & lab_sea.salt_plume results
111    o pkg/seaice:
112      Major overhaul of the LSOR solver: change discretization from original
113      finite differences to finite volume. The old routine is still in the
114      file seaice_lsr.F and can be turned on with the CPP-flag
115      SEAICE_OLD_AND_BAD_DISCRETIZATION
116      Along with this change, the discretization of the strain rates is changed.
117      The same flag turns on the old discretization in seaice_calc_strainrates.F
118      All verification experiments with seaice are affected (except for
119      seaice_exf_offline); global_ocean.cs32x15/input.icedyn recovers the old
120      results by setting the above flag.
121      Further changes involve changes in defaults:
122      - ALLOW_FLOODING is defined and turned on by default
123      - SEAICEadvSnow = .true. is now the default
124      - SEAICEadvSalt = .true. is now the default
125      - SEAICEadvAge  = .true. is now the default
126      - SEAICE_clipVelocities  = .false. is now the default
127                                         (as per J. Zhang's recommendation)
128      - B-grid, and thus not tested: SEAICE_TEST_ICE_STRESS_1/EXPLICIT_SSH_SLOPE
129        is defined, SEAICE_TEST_ICE_STRESS_1 is renamed into SEAICE_BICE_STRESS
130      - seaice_growth: replace computation of UG by a simple copy from wspeed
131    
132    checkpoint61k
133    o pkg/seaice: a few bug fixes mostly concerning the metric terms:
134      seaice_lsr: fixed a few metric terms,
135                  affects lab_sea.lsr, lab_sea.salt_plume, seaice_obcs
136                  add more debugging diagnostics
137      seaice_evp: removed superfluous many metric terms of FV discretization
138                  of stress divergence
139                  affects lab_sea, lab_sea.hb87
140      seaice_ocean_stress: removed superfluous many metric terms of FV discretization
141                  of stress divergence for non-evp solver
142                  (this part is not tested anywhere)
143      seaice_calc_strainrates: fixed a bug in no-slip boundary conditions,
144                  they were effectively only half slip
145                  affects lab_sea.hb87
146      updated all relevant verification experiments (except lab_sea//output_adm.txt
147        which was left over, but fails at level 7 & 6)
148    
149    checkpoint61j
150    o pkg/seaice: turn a few hard wired parameters into run time parameters
151    o pkg/seaice/exf/monitor: turn netcdf coordinate variable T into model
152      time in seconds as promised by the usints in seaice_monitor and exf_monitor
153    o pkg/mnc: fix the coordinate variables for multi-tile curvi-linear grids
154      that are not cubed-sphere grids
155    o pkg/seaice: fix a bug for the rare case of SEAICE_VECTORIZE_LSR
156    o pkg/ctrl:
157      fix bug in ctrl_depth_ini.F (EXCH_XYZ was applied to 2-D field xx_r_low)
158    o non-hydrostatic (calc_gw.F):
159      fix viscA4 on CS-grid + fix diagnostics: Wm_Diss & Wm_Advec
160      update output of exp. global_ocean.cs32x15.viscA4
161    o remove backward compatibility for thetaMin,phiMin
162      (replaced by xgOrigin,ygOrigin on Jan 27, 2009)
163    o pkg/exf: fix a serious bug in exf_set_uv.F: do a rotation of the
164      interpolated wind field not only for curvilineargrid=.true., but also
165      for a rotated grid (rotateGrid=.true.)
166    o pkg/exf: add capability to bypass interpolation for runoff
167      by setting yet another CPP-flag
168    o eesupp/src, B-grid exchange:
169      add simple (6 tiles, non MPI) CS exch + standard interface S/R.
170    o autodiff
171      new CPP option ALLOW_TAMC_SINGLEPREC_COMLEV
172      allows to switch to single-prec common blocks;
173      corresponding switch occurs in tamc.h, integer isbyte
174      TAF store directivs "byte" and "kind" seem equivalent;
175      Most tamc.h have been updated correspondingly.
176    
177    checkpoint61i
178    o autodiff:
179      fix autodiff_sore/_restore indices for obcs
180      (spotted by I. Hoteit, M. Mazloff)
181    o pkg/autodiff, pkg/ctrl:
182      Add flag to reduce all tapelev I/O to single-prec.
183      In data.ctrl set
184        doSinglePrecTapelev = .TRUE.
185    o model/src/ini_curvilinear_grid.F, new grid-file format without EXCH2:
186      check in hack for SX8 compiler (for dxV, dyU); remove it afterwards.
187    o pkg/shelfice: fix bug with SHELFICEconserve flag, prepare for
188      real fresh water flux (not yet)
189    o pkg/mdsio & rw:
190     - add argument & option to S/R MDS_WRITEVEC_LOC (avoid Open/Close & write-meta)
191     - add simple interface S/R to MDS_WRITEVEC_LOC in pkg/rw: WRITE_GLVEC_RX.
192    o pkg/flt:
193     - replace FLT_INIT by 3-steps standard initialization S/R: readparms,
194       init_fixed & ini_varia.
195     - clean-up & simplify linear interpolation S/R:
196       move flt_bilinear.F -> flt_interp_linear.F ; add arg. myThid.
197     - fix some indices (mainly vertical index) ; add IMPLICIT NONE.
198     - more efficient I/O, using new options of MDS_WRITEVEC_LOC S/R.
199     - add vert. coordinate & horiz. indices to output files.
200     - change vertical position in initial condition, from index to depth [m].
201     - store horizontal (decimal) indices i,j in common block (instead of coord. x,y)
202       (easier to get to a curvilinear grid) ; delX,delY no longer used.
203    o pkg/ggl90: a few modifications:
204     - fix bottom boundary condition, and interpolation of KappaE
205       near top and bottom
206     - use same set of viscosity/diffusivity for TKE/momnetum/tracer
207     - add smoothing option as in Blanke and Delecluse (1993) (--> ALLOW_GGL90_SMOOTH)
208     - add a few options for mixing-length upper limit (--> mxlMaxFlag)  
209    o rename thetaMin,phiMin -> xgOrigin,ygOrigin
210      (maintain temporary backward compatibility, until next checkpoint)
211    
212    checkpoint61h
213    o pkg/diagnostics with "periodic averaging diagnostics":
214      fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
215    o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
216    o pkg/obcs: fix loop ranges for balancing code
217    o pkg/flt:
218     - improve criteria for finding which tile owns a float.
219     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
220    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
221      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
222      with ocean biogeo)
223    o pkg/flt:
224     - do some cleaning and fix the restart ;
225     - add output.txt in flt_example/results to get this pkg tested.
226    o genmake2: add an EXTENDED_SRC option and flag.
227       for now, cannot be turned on on command line (only through genmake_local)
228    o pkg/mdsio: read/write vector:
229     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
230     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
231       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
232     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
233      (drop to 4 digits matching for grad). But this test does not look very
234      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
235    
236    checkpoint61g
237    o pkg/flt:
238      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
239       + make OPTIONS file more standard.
240      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
241      - fix _BYTESWAPIO CPP-Flag
242      - standard reading of file-parameter "data.flt"
243      - fix argument list of S/R FLT_RESTART
244      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
245    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
246    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
247      a still unfixed compiler/optimization bug
248    
249    checkpoint61f
250    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
251      update results of global_ocean.cs32x15.icedyn test.
252    o move getcon.F from model/src to pkg/fizhi.
253    o pkg/exf: add parameter for extrapolation of temp up to the surface
254       and option to prevent negative evap (in bulk_largeyeager04 only).
255    o Prather Advection scheme: fix tracer conservation for divergent flow
256      (e.g., when using NonLin Free-Surface).
257    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
258    o gmredi (Visbeck-variable-K):
259     - add more parameters to Visbeck-variable-K.
260     - use a 5 points average for dSigmaR in Visbeck-K calculation
261       (more "homogenous": same stencil and same weights as in dSigmaH)
262     - update output of ideal_2D_oce experiment.
263    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
264      (#undef REAL4_IS_SLOW)
265     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
266       coordinate variable
267     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
268       (surface forcing fields), removes some of the functionality
269     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
270     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
271       probably not all: copy _RS surface flux fields to RL field before
272       calling DIAGNOSTICS_FILL
273     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
274       real*4 (CALL EXCH_*_RS) versions.
275     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
276       (generate new output).
277    
278    checkpoint61e
279    o gmredi (Visbeck-variable-K):
280      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
281      - change computation of Visbeck-K where Slope > Smax :        
282        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
283        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
284    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
285      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
286    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
287    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
288      does not become too large (to avoid precision problems in implicit-diffusion
289      solver); update ideal_2D_oce output.
290    o pkg ggl90:
291      - in ggl90_cal.F: compute only one set of visc/diff, used to
292        step forward TKE/T/S/momentum
293      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
294        have Prandlt =1)
295    o gmredi (fm07):
296      - add lower limit on Transition layer thickness + lower limit on 1/lambda
297      - allow to set few more params from data.gmredi
298    o pkg ggl90:
299          - add missing sqrt(2) factor in computation of mixing length
300            scale in ggl90_calc.F
301            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
302    
303    checkpoint61d
304    o adjoint modifs
305      - adapt to new field rhoInSitu
306      - allow to revert from StoreDynVars2D, StoreDynVars3D
307        to individual fields
308        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
309    o store 3-D (in-situ) density in commom block (DYNVARS.h)
310     - save 1 rho computation.
311     - no longer modify T & S inland when using down_slope pkg.
312    o gad_som : allow to switch to SOM advection for T & S without corresponding
313      pickup files (using new S/R: MDS_CHECK4FILE).
314    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
315      (for useSingleCpuIO to work in multi-threaded)
316    o pkg/shelfice:
317     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
318       with SHELFICEtopoFile in data.shelfice
319     - move code for reading ice shelf topography and modifying hFacC into separate
320       subroutines of the shelfice package
321     - separate initialisation of "fixed" and "variable" variables
322     - kTopC is not (yet) replaced by kSurfC, although this is possible
323    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
324    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
325      and rename:
326      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
327      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
328    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
329    
330    checkpoint61c
331    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
332      to add mass source/sink of fluid in the interior (3-D generalisation
333      of oceanic real-fresh water flux).
334    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
335    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
336    o new pkg: down_slope
337      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
338      - presently, modify T & S inland (dwnslp_calc_rho.F).
339        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
340      - implementation for ocean in P-coords not tested.
341      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
342    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
343      (to facilitate conversion of oceanic pkg to p-coordinate).
344    o change FIND_RHO to FIND_RHO_2D :
345      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
346    o new pkg: cheapaml
347    
348    checkpoint61b
349    o exch2:
350      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
351      - no longer depend on the order sequence (N,S,E,W).
352      - 3rd exchange no longer needed (tested with 24 tiles).
353      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
354      - exch_UV_A-grid readily available (but not yet tested).
355      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
356      (both are no longer needed) in exch_uv: no effect in forward run; but
357       get truncation error differences with adjoint exch.
358    o exch2:
359     - change index-bounds storage (moved from target to local tile,
360       more intuitive this way) ; rename/remove some variables.
361     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
362    
363    checkpoint61a
364    o exch2/matlab-topology-generator:
365      fix bug in index bounds for N-S internal exchange (hard to tell if this
366      had any effect on the solution).
367    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
368      is exceeded
369    o testreport: modify syntax of awk, so that it works also with
370      awk, and not only with nawk and gawk
371    
372    checkpoint61
373    o autodiff
374      Change default for TAF usage by removing argument '-nonew_arg'
375      This changes TAF subroutine argument list (ordering of active var.)
376      Omission of this flag leads to incompatibility w.r.t. TAMC
377      To restore TAMC-compatibility, need following modifs:
378      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
379      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
380      Tested TAF version is 1.9.22
381      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
382    
383    checkpoint60
384    --->>> This is the last checkpoint for which generating the adjoint
385    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
386    --->>> by default.
387    --->>> Future checkpoints will ommit this flag by default.
388    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
389    o pkg/grdchk: Add gradient check to etan0 perturbations.
390    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
391    o pkg/autodiff: more flexibility in zeroadj.
392      model/src: modifying do_oceanic_phys.F accordingly.
393    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
394    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
395      special setup of gmredi for which the adjoint is stable
396      enough for parameter optimization.
397    o bridging the gap between eddy stress and GM.
398      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
399          along with a change in CPP option (now ALLOW_EDDYPSI).
400      -> when using GM w/ GM_AdvForm:
401          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
402          is applied either in the tracer Eq. or in momentum Eq.
403          depending on data.gmredi (intro. GM_InMomAsStress).
404      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
405      The key modifications are in model/src/taueddy_external_forcing.F
406      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
407    
408    checkpoint59r
409    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
410      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
411      fix option to read coriolis(@ cell-corner) from files with CS-grid.
412    o pkg/mnc: add some attributes to standard 1D-coordinate variables
413    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
414      mass points, when using mnc for output
415      - add runtime parameter (missing_value, missing_value_int) to override
416        default (which is the value of getcon('UNDEF'))
417    o pkg/mnc: prepare mnc for the actual use of missing values with the
418      diagnostics package: small fix in mnc_cw_readwrite.template and more
419      initialisation of never used fields
420      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
421      versions
422    o pkg/thsice/thsice_ini_vars.F added default initial values so that
423      thermodynamics sea ice solver does not blow up when some initial fields
424      are missing.
425    o move from external_forcing_surf.F to ini_forcing.F
426      the p-coord. hack consisting in using pLoad to set phi0surf ;
427      update output of tutorial_global_oce_in_p (affected @ truncation level).
428    o Freshen up a bit hs94.1x64x5, notably:
429      remove rotationPeriod and tRef=5*0. (adjoint only), and add
430      exactConserv=.TRUE.
431    o pkg/generic_advdiff:
432      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
433      applies to files where Temperature & Salinity 2nd Order moments are used.
434    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
435      this uses a dynamically allocated internal state data structure
436      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
437      and requires a fortran 90 compiler
438    
439    checkpoint59q
440    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
441       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
442    o Refresh tutorial_global_oce_biogeo, notably:
443      - change bathymetry (put back seamounts in ACC, use hFacs)
444      - change EOS (POLY3 --> JMD95Z)
445      - use Bryan-Lewis vertical diffusivity
446      - use multidimensional advection
447      - remove old virtual virtual in dic pkg, now done through ptracer pkg
448      - change a couple of parameters in dic pkg
449    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
450    o pkg/obcs: change default to OBCSfixTopo = .true.,
451      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
452      - replace "debugMode" with "debugLevel .GE. debLevB"
453    o implementation of TAF directives for gchem,cfc,dic
454    o remove "exp5" (replaced by tutorial_deep_convection).
455    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
456      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
457      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
458      --> changes results in exp4, seaice_obcs
459    o tutorial_deep_convection :
460      update the set-up and increase resolution and domain size ; start
461      from pseudo initial conditions = output at t=120mn in order to see
462      something happening when running testreport.
463    o pkg/seaice: add os7mp as an advection scheme
464                  add check for advection schemes
465                  add a flag for restoring T and S underneath sea ice
466    o pkg/my82: add netcdf-support and diagnostics
467    o thsice pkg:
468      - Now hsMax limits snow height by turning it into ice following
469        flooding scheme (and now conserving energy)
470      - Slight rewriting of the formula in thsice_calc_thick.F
471      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
472      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
473    
474    checkpoint59p
475    o gchem / dic / cfc :
476      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
477      - add new parameter files: "data.dic" & "data.cfc" ;
478      - various re-arrangement in initialisation & header file ;
479      - fix tutorial_global_oce_biogeo for multi-threaded test.
480    o pkg/dic: test for "pickup_dic" file when restarting ;
481      if no pickup-file, can restart with a re-initialised pH (same as it did
482      before) providing pickupStrictlyMatch is set to False.
483    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
484      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
485    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
486      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
487    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
488     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
489       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
490    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
491       scheme to use for vorticty-term ;
492     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
493       (with default selectVortScheme, return to original discretisation)
494     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
495    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
496    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
497      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
498      also fix diagnostics VISCAHW & VISCA4W.
499    
500    checkpoint59o
501    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
502    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
503      move a few statemens out the main loop into separate loops
504    o pkg/shelfice:
505      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
506        (kg/m^2/s), does not break tests, because in verification/isomip,
507        rhoConstFresh=rhoConst (by accident)
508      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
509      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
510        new file model/src/seawater.F, so that they are available for all pkgs.
511      - convert potential temperature into in-situ temperature. This changes the
512        isomip tests => update tests
513    o add a flag writePickupAtEnd (default=true) to be able to suppress
514      writing a pickup at the last timestep
515    o tools/mpack-1.6 :
516      - disable automake (not working) and autoconf (not needed).
517      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
518        also cleaner with much less compilation warnings.
519    o pkg/profiles:
520      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
521      (for "less than 32 characters name" compiler requirement)
522    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
523      conditions that have a different sampling frequency than S/T/U/V obcs
524    o pkg/diagnostics (stats-diags):
525      - fix global Min/Max in case 1 processor get only empty tiles
526    o genmake2: replace (4 times)
527         make genmake_tc_1.o >> genmake_warnings 2>&1
528      with
529         COMM="$CC $CFLAGS -c genmake_tc_1.c"
530         echo $COMM >> genmake_warnings
531         $COMM >> genmake_warnings 2>&1
532      to make genmake2 always see the value of CC as specified in the optfile.
533    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
534      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
535      - modify verification advect_cs test to test SOM-advection on CS-grid.
536    o pkg/ctrl:
537      - Rewrite of ctrl_map_ini_ecco.F,
538        introducing a generic routine (ctrl_map_ini_gen.F).
539      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
540    
541    checkpoint59n
542    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
543      number in dedicate array "hdiag":
544      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
545        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
546      - many small changes (integer format) for large number of diagnostics
547      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
548        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
549    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
550      usingSphericalGrid, this allows to define the rotated grid coordinates
551      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
552      geographical coordinates according to the inverse of the rotation defined
553      by the Euler angles, so that Coriolis parameter and online-interpolation by
554      exf works with the geographical coordinates on XC/YC/XG/YG.
555      Naturally, this feature does not work with all packages, so some
556      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
557      profiles), because there the coordinates are assumed to be regular
558      spherical grid coordinates.
559    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
560      - introduce isopycnal diffusion coefficient control.
561    o tools/adjoint_options:
562      - additional control vector components.
563    o pkg/mnc: have mnc create marginally meaning full coordinate variables
564      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
565    o pkg/mypackage:
566      - add example of read/write pickup for state-var ;
567      - add entry points to the main code for state-vars diags & write-pickup.
568    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
569      transitions for useExfYearlyFields
570      - add new subroutine that determines the file to read from for
571        use*YearlyFields = .TRUE. and .FALSE.
572      - add a verification experiment to global_with_exf that tests
573        useExfYearlyFields with USE_EXF_INTERPOLATION defined
574    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
575      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
576      subroutines (which could be generated from a template, because they are
577      almost identical), for now they are included in obcs_prescribe_read.F for
578      simplicity
579    o pkg/exf:
580      - add a little more diagnostic to exf_interp_read (in analogy to
581        mds_read_field, can be turned off with debugLevel < debugLevA=1)
582      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
583        ugly but fast by unrolling short inner loops, inserting a unroll=8
584        directive in routine lagran, and splitting a loop and making do while the
585        outermost loop (the latter requires the intoduction of index arrays)
586    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
587    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
588      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
589    o verification/seaice_obcs: updated for restart test and latest options
590    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
591      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
592      for now this is only available for the C-grid code and also within
593      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
594    
595    checkpoint59m
596    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
597      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
598    o gad_som : fix flux output (& diagnostics) to have same units as other  
599      advection scheme fluxes (was previously multiplied by deltaT).  
600    o added verification/seaice_obcs both to test seaice open boundaries
601      and to provide an example matlab scrpt for generating them
602    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
603    o pkg/salt_plume: clean up salt_plume_frac.F to
604      remove redundancy in PlumeMethod 1 and 4
605    o pkg/kpp: added saltplume diagnostics
606    o pkg/obcs and pkg/seaice:
607      - do not set uice and vice to zero when OB*icefile are unspecified
608      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
609      - moved seaice tracer obcs after call to seaice_growth
610    o pkg/salt_plume: added various options for salt plume depth
611      criterion and for vertical distribution of the salt
612    
613    checkpoint59l
614    o pkg/ptracers: new version of ptracers pickup:
615      read meta file and write only fields which are needed to restart.
616      ( same logic as main pickup file ; also using pickupStrictlyMatch )
617    o pkg/seaice:
618      - add timescale for melting due to warm mixed layer as a means of
619        setting SEAICE_availHeatFrac more conveniently
620      - add a CPP-flag/runtime parameter check for flooding algorithm
621      - reformulated availHeat in seaice_growth.F to be independent of AREA
622    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
623      unit changes
624    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
625    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
626      SX vector computer.
627    o pkg/seaice:
628      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
629        seaice forcing fields can now be read only through pkg/exf
630      - removed some unused halos
631    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
632    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
633      or U/VICE from U/VWIND before computing U/VSTRESS
634    
635    checkpoint59k
636    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
637      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
638    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
639      all experiments pass when compile with un-initialised var. checking option.
640    o added pkg/salt_plume
641    o script to test restart (for now, in MITgcm_contrib/jmc_script)
642    o pkg/seaice: new read/write pickup version.
643      read meta file and write only fields which are needed to restart.
644      ( same logic as main pickup file ; also using pickupStrictlyMatch )
645    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
646    o lab_sea.hb87: modify the domain & update output.hb87.txt :
647      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
648      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
649      process. Fixed here by closing the domain at the Northern boundary.
650    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
651    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
652      a set of consecutive levels in/from a 3-D array.
653    o pkg/ptracers:
654      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
655      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
656    
657    checkpoint59j
658    o in pkgs: dic, obcs, offline, rbcs:
659      standard way to compute coeff. for time interpolation between 2 time reccords
660      which retains full precision (& make results less dependent on compiler).
661      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
662    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
663      packages instead of reading ice cover and wind speed separately
664    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
665     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
666      to allow to compile customized code before the update)
667    o cleaning-up:
668      - fix CPP instruction syntax in pkg/obcs
669      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
670        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
671      - fix some threads issue in IO parts.
672    o pkg/dic:
673      - add tons of "_d 0" (--> much better testreports !)
674       and then update outputs of tutorial_global_oce_biogeo
675    o pkg/mom_fluxform:
676      add a special version of momentum advection intended to conserve momentum
677      next to a bathymetry step or a coastline edge. (default = off = #undef)
678    o new read/write pickup version:
679      - for now, only implemented for main (mdsio) pickup file.
680      - write out only what is needed to restart; merge pickup_nh , pickup_ph
681        and main pickup together.
682      - read meta file; read only what is needed to restart; stop if a field
683        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
684        if it make sense (even if the restart is not perfect).
685      - if no meta file, assume that pickup to read corresponds exactly to
686        a pickup that would currently be written.
687      - read pickup written in the old format (until checkpoint59i) if it
688        recognizes an old meta file (no field-list).
689      - add a meta file in exp. which starts from a pickup: 2 cases:
690        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
691         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
692        b) a meta file describing the content of the associated pickup file
693         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
694    o pkg/mdsio & pkg/rw:
695      - new routine to read a meta file ; new set of routine to read
696        Multiple-fields file (with meta file).
697    o added open boundary conditions capability for seaice
698        HSNOW, HSALT, UICE, and VICE
699    
700    checkpoint59i
701    o adjoint:
702      * fix multiDimAdvection adjoint
703        (partial recomputation problem by TAF for fVerT(:,:,kDown)
704        and comlev1 size definition (maxpass vs. max. number of tracers)
705      * verification/global_ocean.90x45x15 adjoint now tests
706        NLFS and multiDimAdvection using DST3 (=30)
707      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
708    o pkg/kpp: add "_d 0" to real constant (if missing);
709      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
710      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
711    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
712      for internal parameters related to restart process (formerly from PARAMS.h)
713      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
714    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
715      as argument. (only atm2d & obcs write_pickup have not yet been updated)
716    o pkg/monitor:
717      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
718      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
719      - account for deep Atmosphere factor and density factor (anelastic)
720    o added open boundary conditions capability for seaice HEFF and AREA
721    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
722      thermodynamics
723      - requires a little reorganization, which affects the testreport results
724        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
725        so that now the conservative form is tested
726      - add a few comments
727    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
728    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
729    o add new diagnostics to seaice: advective, diffusive fluxes (only for
730      multidim-advection, for scheme 2 they are not filled) and transports,
731      thermodynamic growth rates
732    o change units of EmPmR (inside the code, + within coupling interface)
733      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
734      Affects results @ truncation level (cg2d match) and update output of
735       experiments: lab_sea(6), global_ocean.90x40x15(10),
736      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
737      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
738      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
739      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
740    
741    checkpoint59h
742    o pkg/exf:
743      - improve vectorization by moving if-statement out of loops in
744        exf_mapfields, exf_radiation
745      - exf_bulkformulae.F: introduce 2D fields and vectorize code
746    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
747    o testreport:
748      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
749        monitor & update offline_exf_seaice exp. output.
750      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
751    o pkg/seaice:
752      - bug fix in the evp solver: boundary conditions were affected be
753        masking of zMax/zMin (changes results)
754      - minor bug fix in boundary conditions in seaice_calc_strainrates
755        (changes results for no_slip)
756      - seaice_lsr.F: make interpolation of eta dependent on boundaries
757      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
758      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
759        stress formulation and no-slip boundary conditions
760    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
761      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
762    o pkg/seaice: a first HSALT time stepping equation has been checked in
763    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
764      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
765      without requiring DO-IF statements
766    o pkg/thsice:
767      use continuous power-law function for partition of energy between lateral
768      melting/freezing and thinning/thickening ; old code using step function
769      still available with #undef THSICE_FRACEN_POWERLAW
770      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
771    o testreport: change AD testing : check against results/output_adm.txt
772      using same scripts as for forward test.
773    
774    checkpoint59g
775    o adjoint testing: in preparation for changing testreport:
776      - output format: cost and grad written on separated lines
777      - ad output results in directory "results" (instead of "results_ad")
778    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
779    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
780    o pkg/ecco: allow user defined cost function contributions
781    o testreport:
782      Allow to choose (per experiment) the list of tested output variables
783       and the main variable (used to issue a pass/FAIL ) ;
784      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
785      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
786      Also modify printing of summary:
787       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
788       b) echo the list of tested variables in the individual summary.txt of
789          each experiment.
790    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
791      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
792      (but still depend on the tile decompostion of the domain).
793    o pkg/seaice: change a discretization detail to make the B-grid code
794      "more symmetric". This change is likely to remove all "ridges/leads" that
795      where quasi-aligned with the grid in B-grid solutions. It may also be
796      the solution to the stress coupling issues with the B-grid.
797    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
798      remove .cvsignore from input dir. (since testreport no longer run here).
799    o pkg/thsice:
800     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
801     - fix reshaping of sea-ice just after advection:
802       melt all the ice only if ice-volume is too small.
803     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
804       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
805     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
806    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
807      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
808    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
809      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
810      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
811      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
812      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
813      -> update output.txt
814    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
815     this affects truncation error: -> update output.txt of exp:
816      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
817      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
818    
819    checkpoint59f
820    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
821    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
822      a bounded range (in forward mode)
823    o pkg/ecco, ctrl, autodiff and mom_common:
824     internal parameter controls, completements of implementations
825    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
826    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
827      (not seem any difference in testing results).
828    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
829       at face corners.
830    o pkg/generic_advdiff:
831     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
832      loop range indices for computing vertical advection tendency
833      and do the calculation in the interior only (no overlap) ;
834      for now, only implemented for SOM advection (to save CPU time).
835     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
836    o exch2 adjoint
837      First set of changes:
838      - add exch2 hand-written adjoint templates
839      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
840        This will require cleanup in pkg/autodiff/*.F
841        (changed routines currently kept separate in verif. code/)
842      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
843        that used to hide exch2 or cubed-sphere specific code
844        (commented via 'cph-exch2')
845    o pkg/seaice
846      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
847    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
848       output of global_ocean.cs32x15.thsice .
849    
850    checkpoint59e
851    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
852      for B-grid vector (not yet tested) and C-grid vector (<- only used
853      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
854    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
855      (#ifdef ALLOW_SALT_PLUME)
856    o gather_2d/scatter_2d: removed halo regions
857    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
858      scheme and the corresponding test case (under front_relax dir). For now,
859      only available with Skew-flux form and not yet tested in realistic set-up.
860      adjoint: store directives updated, but gradient checks deteriorated,
861      so maybe GM/Redi adjoint is now broken.
862    o seaice adjoint
863      * add AREA, HEFF, HSNOW as control variable
864        (should not change lab_sea results)
865      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
866    o pkg/seaice:
867      * added computation of saltFlux in seaice_growth;
868        For time being, sea ice salinity is assumed constant
869        contribution of snow flooding to freshening of sea ice is neglected.
870        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
871        defaults to 0.0 in order to maintain backward compatibility.
872        Typical values for SEAICE_salinity are 4 to 10 g/kg.
873      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
874      * added SEAICE_availHeatFrac, which specifies fraction of surface level
875        heat content used to melt or grow ice
876      * commented out cap of HICE: it helps keep ice thinner
877      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
878      * applied OBCS T/S mask to HEFFM sea ice mask
879    
880    checkpoint59d
881    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
882     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
883     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
884    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
885     and change default value of parameter "GM_Small_Number";
886     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
887       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
888       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
889    o pkg/ecco: cost function when applying pkg/smooth to controls
890    o pkg/ctrl: add forcingPrecond run time parameter
891    o pkg/seaice:
892     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
893     - fix bug in metric terms of u-equation in LSR solver (implicit part),
894       changes verification/lab_sea
895     - rearrange implicit part of u-equation in LSR solver to make it easier to
896       read, understand, and debug. This causes changes at the truncation level.
897     - fix (serious) bug in the boundary conditions (sign error in the implicit
898       part) of the LSR solver. Changes all LSR results.
899     - fixed problem with HSNOW initialization to avoid thick snow when AREA
900       is initilized with small values - does not change lab_sea results.
901     - added HsnowFile initialization capability
902    o pkg/smooth: addition to model/src and pkg/ctrl so allow
903     initialization of pkg/smooth and application to control vector
904    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
905    o dependencies: pkg/profiles requires pkg/cal
906    o pkg/profiles:
907     - added option ALLOW_PROFILES_GENERICGRID
908         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
909         that interpolation information (grid points and coefficients) is provided
910         within the netcdf input files.
911         -> sample matlab scripts can be found in MITgcm_contrib/gael
912         that allow you to prepare netcdf input files.
913     - also modified: cleaner include statements, cleaner error print statements,
914       cleaner stops when error, and more tests of the netcdf input files consistency.
915    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
916    o pkg/seaice:
917     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
918       requires a new routine: seaice_diagnostics_fill.F
919     - make sure that seaice does not move if not forced (pressure replacement
920       method, Hibler and Ip, 1995), changes results
921     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
922     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
923       It is turned off by default (=-1.), because it changes the results.
924     - make it possible to read AREA from a file, too.
925    
926    checkpoint59c
927    o add S/R and diagnostics for oceanic mixed-layer depth
928    o move GMRedi call after all vertical mixing schemes (including KPP)
929    o pkg/thsice:
930     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
931      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
932    o pkg/obcs:
933     - bug fix for balance code
934    o pkg/seaice:
935      - allow values of SEAICE_elasticParm > 1
936      - add new parameter SEAICE_evpTauRelax as an alternative
937        to SEAICE_elasticParm
938      - make lsr boundary conditions free slip (by default), changes result
939      - add code for no slip boundary conditions for lsr
940      - set minimum of zeta to zero (and not 4e8) (changes results)
941      - add a cap on AREA after advecting AREA if seaice_growth is not called
942    o change calculation of Visbeck K:
943      - no longer depend on tapering scheme; instead, compute slope (limited
944        by GM_maxSlope). this is equivalent to what was comuted before with
945        clipping or linear tappering.
946      - fix vertical averaging (wrong by 1/2 level)
947      - leave the old version (but will not be maintained) within
948        #ifdef OLD_VISBECK_CALC / #endif
949      - update output of exp. ideal_2D_oce
950    o change error catch in calc_r_star to improve vectorization
951    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
952      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
953    o adjoint:
954      Re-organized adjoint checkpointing according to Matt Mazloff
955      (but with modifs/completions/cleanups)
956      Storing is now bundled into large arrays to optimized I/O
957      (and second step in cleanup of the_main_loop)
958    
959    checkpoint59b
960    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
961      - export/import (between ocean & coupler) fields needed for ocean DIC.
962    o pkg/seaice:
963      - get rid of three more exchanges seaice_calc_viscosities (required
964        different loop boundaries in seaice_lsr and seaice_ocean_stress)
965      - bug fix in seaice_ocean_stress (update of lab_sea required)
966      - reduce loop boundaries to necessary minimum also in seaice_evp
967      - go back to the old way of computing deltaC/Z as the adjoint likes that
968        better
969    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
970      passive tracer to an Age Tracer) + update output.txt
971    o pkg/exf:
972      - implement A-grid / C-grid selection for wind-stress input files.
973      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
974      for now, in exf_bulk_largeyeager04.F only :
975      - change implementation for case where windspeed + 2. components wind-stress
976        are read-in. AND use rhoConstFresh to convert evap.
977    o pkg/seaice:
978      - use correct EXCH_UV for wind-forcing (on A-grid).
979      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
980        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
981    o pkg/exf:
982      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
983      EXF_INTERPOLATION:
984      - merge global_with_exf/code version of exf_interp_read.F
985        to the main code ;
986      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
987        reading the file ; Important: This options needs to be defined to recover
988        previous code.
989        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
990      - no longer loose real*8 precision along the way when using exf_iprec=64.
991    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
992      - change discretisation of evp-solver in order to avoid another exchange
993        (changes lab_sea) and clean up a little
994      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
995        help the adjoint (this also changes the results slightly)
996      - add a few "_d 0" where they had been missing in seaice_evp.F
997      - cleaning up: remove unused seaice_calc_rhs.F
998    o pkg/exf: some cleaning-up:
999      - change various "constants" into runtime parameters
1000      - cleaned-up Large&Yeager04 routine which should eventually
1001        replace exf_bulkformulae.F (changed names of S/R and CPP)
1002        and merged various ALLOW_ATM_WIND options
1003     only used with thsice pkg (in thsice_get_exf.F):
1004      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
1005        which are used when useStabilityFct_overIce=TRUE (= the default)
1006      - change default values of ice & snow emissivity and scale downward LW
1007        by ice & snow emissivity.
1008    o pkg/thsice:
1009     fix few little problems, in thsice_calc_thickn.F:
1010      - growth vertically (and not laterally) if iceFrac == iceMaskMax
1011      - melt only laterally if hIce < hThinIce (as the comments say)
1012      and in thsice_extend.F:
1013      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
1014      - start to form ice as soon as the minimum ice-volume is reachable.
1015     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
1016      and cpl_aim+ocn
1017    o pkg/kpp
1018     - move computation of surface related input fields to KPP into a new
1019       subroutine kpp_forcing_surf.F
1020     - remove wrong (within bi,bj loops) EXCH calls.
1021     - little cleaning (add argument myThid in last position, cvs header ...)
1022     - for now, fix conservation problem by exchanging KPPviscAz (may not
1023       be the best fix)
1024    o pkg/seaice
1025     - check for inconsistent evp parameter/cpp-flag combination
1026     - remove leftover errIO flat for obsolete name list error handling
1027    o OpenAD
1028     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
1029    
1030    checkpoint59a
1031    o pkg/seaice: some parameter clarifications and a little bit of clean up
1032    o pkg/thsice: rename run-time parameters:
1033       himin       -> hIceMin
1034       himin0      -> hThinIce
1035       hihig       -> hThickIce
1036       i0          -> i0swFrac
1037       transCoef   -> bMeltCoef
1038       frac_energy -> fracMelting
1039      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
1040       with default values (for now) that do not change the results.
1041      remove old version of thsice vars advection in pkg/seaice.
1042    o in FFIELDS.h:
1043      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
1044      - make pLoad & sIceLoad always available (but still only used if
1045         ATMOSPHERIC_LOADING is #define).
1046    o pkg/kpp: replaced _KPP_RL with _RL
1047    o bug fixes for vertical diffusivity computations when both KPP and
1048        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
1049        are no longer updating the vertical diffusivity array
1050        (passed as argument) but are (re-) setting those arrays.
1051    o pkg/seaice: fix bug in evp solver, while doing that
1052      - change (improve?) discretization of stress computations for both
1053        cgrid-lsr and evp solver
1054      - add a new routine to compute strain rates
1055      - the above changes lab_sea results
1056      - add no slip conditions for evp solver (off by default), lsr-version
1057        may follow
1058      - fix exchange for shear at Z-points (does not change lab_sea)
1059      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
1060        (to force the user to pick a time step since there is not "safe" way
1061        of choosing it)
1062      - add principal stress diagnostics
1063      - rearrange fields for evp a little to avoid having to call a: too many
1064        exchanges and b: exchanges for stress trensor components which we do
1065        not have.
1066      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
1067        of evp, complete rewrite for lsr case (latter is does not yet work
1068        in all cases)
1069    o pkg/kpp: add code to have mixing in shelf ice caverns
1070      - add myThid to all kpp routines (long overdue)
1071    
1072    checkpoint59
1073    o pkg/exf:
1074      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
1075        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
1076      - move exf header files from lower_case.h to UPPER_CASE.h ;
1077        add missing cvs Header & Name
1078      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
1079      - add namelist param. selectStressGridPosition, exf_monFreq
1080      - retire many _CLIM routines, and remove data.exf_clim
1081        + params moved to data.exf
1082        + climsst, climsss now handled by exf_set_gen, i.e.
1083          climss?period=0 refers to constant field,
1084          climss?period=-12 to monthly forcing
1085      - split up namelists in data.exf
1086    o pkg/seaice:
1087      - remove seaice_exch and seaice_exch_uv
1088      - remove superfluous exchange of theta
1089      - add myThid to seaice_budget_ocean/ice
1090      - add new interface for atmospheric wind forcing (C-grid only)
1091        + new routine
1092        + two new field (taux, tauy for stress over ice)
1093        + removed one global field (DAIRN) for C-grid case only
1094    o pkg/thsise
1095      - 2nd set of modifs for thsice adjoint in conjunction with exf
1096    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
1097    
1098    checkpoint58y_post
1099    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
1100      vertical diffusivity, similar to that in MOM4; turned on using
1101      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
1102      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
1103    o Added capability for 3D specification of background vertical diffusion
1104      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
1105      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
1106      "data" file that contains the 3D vertical diffusivity coefficients.
1107    o ice dynamics (pkg/seaice) with thsice thermodynamics:
1108      - add code within pkg thsice to advect & diffuse sea-ice fields
1109      similar to (and will replace) what has been added in  seaice_advdiff.F,
1110      but: - conserving Mass, Heat & Salt.
1111           - better when using non-linear advection scheme (not yet fully tested)
1112           - can also be used in atmospheric set-up (for now, only the diffusion).
1113    
1114    checkpoint58x_post
1115    o IO option for global-file compact format:
1116      - add options when generating topology (utils/exch2/matlab-topology-generator)
1117      - add I/O capability (pkg/mdsio).
1118      - adapt utils/matlab/rdmds.m to read this format.
1119      for now long-line format not yet supported by pkg/mdsio (& exch2).
1120    o shelfice: add a few diagnostics
1121    
1122    checkpoint58w_post
1123    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
1124      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
1125      (and replace horiVertRatio in NH code).
1126      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
1127                         and tutorial_plume_on_slope (sensitive to truncation)
1128    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
1129      directly to drive seaice model (C-grid only)
1130    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
1131     - reintroduce computation of wind from stress,
1132     - compute tau (in exf_bulkformulae.F) from windstress averaged to
1133       mass points to avoid tau = 0
1134     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
1135    o rdmnc.m: make it work with "global" files created with gluemnc
1136    o rdmnc.m : some improvements in dealing with singleton dimension
1137      (tested on all testreport mnc output files).
1138    o genmake2: disable pkg/profiles if netcdf test fails.
1139    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
1140    o move call to cal_readparms up to make calendar parameters/variable available
1141      to all packages
1142    
1143    checkpoint58v_post
1144    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
1145      useDynP_inEos_Zc tested.
1146    o pkg/exf: changes to properly interpolate/mask/scale initial fields
1147    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
1148      and portions thereof.  See read_cs.txt for description and examples.
1149    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
1150      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
1151      following the great-circle arc between those 2 points.
1152    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
1153      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
1154    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
1155     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
1156     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
1157     - still needs work (not working with some options ; efficiency to improve)
1158       and serious testing.
1159     - use this scheme for temperature & salinity in 2 advection test exp.:
1160       advect_xy & advect_xz, respectively.
1161    
1162    checkpoint58u_post
1163    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
1164    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
1165    o testreport: add option "-skipdir" to skip some test.
1166    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
1167      momentum calculation.
1168    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
1169    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
1170      remove checkpoint.F and the_correction_step.F (no longer used);
1171      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
1172    o add option (linFSConserveTr) to correct for tracer source/sink due to
1173      Linear Free surface
1174    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
1175    o pkg/thsice: fix reading mnc-pickups
1176    
1177    checkpoint58t_post
1178    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
1179    o pkg/mdsio:
1180     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
1181       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
1182       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
1183     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
1184     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
1185       either MDS_READ_FIELD or MDS_WRITE_FIELD )
1186     - new S/R (to replace MDSWRITEMETA), which allows to write more
1187       informations (variable names, time ...) to meta files.
1188     - modify rdmds.m to give back the meta file content.
1189    o pkg/diagnostics: change vertical interpolation to be safer, and more
1190       flexible (define p-levels to interpolate to in data.diagnostics);
1191      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
1192       diagnostic pointer.
1193    o pkg/seaice: more cleaning up of seaice_growth, added many comments
1194    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
1195    o fix multi-category seaice:
1196     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
1197       SEAICE_MULTICATEGORY
1198     - fix short wave heat flux
1199    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
1200       and allow to use EVP solver. Change forward lab_sea: test both EVP
1201       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
1202    o Initial check-in of lab_sea adjoint
1203      (very similar to natl_box_adjoint/code_seaice)
1204      * used C-grid and EVP solver
1205      * used KPP, GM/Redi
1206      * uses inAdExact=.TRUE.
1207      * gradient checks fail for both ADM and TLM
1208        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
1209        f.d. gradients actually seem more problematic than ADM, TLM gradients;
1210        issue is related to forward mismatch between g77 an ifort
1211    o pkg/seaice: overhaul of thermodynamics
1212     - growth.F and groatb.F are replaced by new routine seaice_growth.F
1213     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
1214     - move a few global fields out of SEAICE.h into seaice_growth.F and
1215       make them 2D (FICE/QNETO/ ...)
1216     - remove FO (it is the same as QNETO)
1217     - introduce a few local fields to avoid modifying external fields such
1218       as atemp, etc.
1219    
1220    checkpoint58s_post
1221    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
1222      changed exf_set_gen.F so that
1223        genperiod=0 means input file is one time-constant field and
1224        genperiod=-12 means input file contains 12 monthly means
1225    o CG2D: use pre-computed solver main-diagonal (stored in common block);
1226      this affects truncation error ; generate new output file for exp. which
1227      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
1228        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
1229        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
1230        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
1231        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
1232        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
1233    o start implementation of deep-atmosphere and anelastic formulation
1234    o verification: remove 2nd copy of input files and use script "prepare_run"
1235      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
1236    o mom_common/vecinv/fluxform: fix a few initialisation isssues
1237    o profiles: fix for multithreaded case
1238    
1239    o diagnostics: rename few diags:
1240      s/'PRESSURE'/'RCENTER '/g
1241      s/'TICE    '/'oceFreez'/g
1242      s/'TAUX    '/'oceTAUX '/g
1243      s/'TAUY    '/'oceTAUY '/g
1244      s/'SWFLUX  '/'oceQsw  '/g
1245      s/DIFx/DFxE/g
1246      s/DIFy/DFyE/g
1247      and add few ocean-forcing diagnostics:
1248      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
1249    o modifications to pkg/seaice/growth.F and budget.F, which change results of
1250      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
1251      as actual snow thickness.  It now refers everywhere to effective snow
1252      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
1253    
1254    checkpoint58r_post
1255    o modifications to pkg/seaice/growth.F, which change results of
1256      lab_sea experiment: fixes pertain to melting snow over open water, to
1257      masking EVAP under sea ice, and to using the correct AREA variable for
1258      computations of EVAP, PRECIP, HSNOW, and GHEFF
1259    o add ability to read bathy, salt, and theta using MNC (off by def)
1260    o add flooding algorithm and advection of HSNOW for pkg/seaice;
1261      both are turned off by default and do no change any results
1262    o seaice advection with pkg/thsice: a step toward the use of non-linear
1263      advection scheme, but #ifdef or commented out for now (requires more EXCH).
1264    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
1265      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
1266      in natl_box (affects results @ truncation level: update output.txt)
1267    o multi-threading and IO:
1268      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
1269      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
1270        (needed to work with SingleCpuIO): tested in all verif. exp.
1271    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
1272      affects the results (but none of the verification test uses this scheme).
1273    o Adding some pkg/diagnostics capability to pkg/seaice
1274      (will certainly be subject to changes)
1275    o ctrl: adding new control variables:
1276      lwflux, lwdown, evap, snowprecip, apressure, runoff
1277    
1278    checkpoint58q_post
1279    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
1280      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
1281      high_res_cube configuration by 4% on Columbia.
1282    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
1283      add (in global_with_exf/code) a version of EXF_INTERP_READ without
1284      dynamical allocation (seems to work in multi-threaded).
1285    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
1286      single CPU io) so that TAF does not have to see EESUPPORT.h
1287    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
1288    
1289    checkpoint58p_post
1290    o obcs: stop if obcs is used with useCDscheme = .true.
1291    o shelfice:
1292     - fix a sign error so that no slip at shelfice interface works
1293     - remove stop for combination non-hydrostatic code and shelfice. That does
1294       not mean, that the results are correct, but at least they are numerically
1295       stable
1296    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
1297    o added adjoint exch routined for all exch*3d* routines
1298      and updated flow directives
1299    
1300    checkpoint58o_post
1301    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
1302      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
1303    o change controling S/R for writing pickup file (new S/R do_write_pickup)
1304      and clean-up reading/writing of pickup files.
1305    o fix local version of read/write pickup (NH part) in rotating_tank/code
1306    o simplify EXCH interface:
1307     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
1308     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
1309    o added the regrid package
1310    o shelfice:
1311     - add a simple boundary layer scheme to reduce noise
1312     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
1313    
1314    checkpoint58n_post
1315    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
1316       local variable (not in common block).
1317    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
1318      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
1319      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
1320        to work with SingleCpuIO.
1321    o add "_d 0" to real constant of pkg/cfc subroutines ;
1322       update exp. cfc_exemple & tutorial_cfc_offline output files.
1323    o multi-threading and IO:
1324      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
1325        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
1326      - barrier before and after reading.
1327      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
1328      - avoid using MDS_WRITELOCAL for LAND pkg output.
1329      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
1330        common-block variables ; Allows multi-threading with master-thread IO.
1331    o change default MAX_NO_THREADS from 32 to 4 ;
1332      and stop cleanly when MAX_NO_THREADS is too small.
1333    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
1334    
1335    checkpoint58m_post
1336    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1337       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1338    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1339       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1340       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1341    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1342        add MITgcm_tutorials (= code + all the tutorials)
1343    o ecco, option to compute cost for total ssh (mean+anom)
1344    o consistent with addition of ptracer and ssh in pkg/profiles
1345    o profiles: adding ptracer and ssh
1346    o testreport: change multi-test output-file name
1347      (from output.txt.{name} to output.{name}.txt)
1348    o profiles: now ok for mutli-tiles case
1349    o seaice: add 4 parameters for different advection schemes for area,
1350      (effective) seaice thickness, enthalphy, and snow height. Their default
1351      is the standard parameter SEAICEadvScheme
1352    o calc_gw:
1353     - add cosFacU in zonal viscous flux (harmonic.visc.).
1354     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1355       of tutorial_plume_on_slope.
1356    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1357    o calc_gw: true flux-form, account for horizontal grid spacing.
1358      update rotating_tank results, but not plume_on_slope (affected at
1359      truncation level, 11 digits).
1360    
1361    checkpoint58l_post
1362    o calc_gw:
1363     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1364     - remove side-drag for now (need to fix it); update plume_on_slope results.
1365     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1366    o commit code to make SST/SSS weights spatially variable
1367      (based on either variable in-situ or variable initial T/S weights)
1368    o pkg/ecco:
1369      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1370        now based on horizontally varying weights wthetaLev, wsaltLev
1371      * cost_averagesflags now returns year indices in addition to day, month
1372      * sflux balance is performed on annual basis
1373        (sflxumm, sfluxmm2, bal_sfluxmm)
1374      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1375        including separate counting and multipliers
1376    o pkg/rbcs
1377      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1378    
1379    checkpoint58k_post
1380    o testreport:
1381     - always build in dir. "build" (if not there, mkdir build instead of building
1382       & running in input)
1383     - run in dir run (if it exists), in build otherwise.
1384     - call prepare_run (if input/prepare_run exists)
1385     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1386    o pkg/exf modifications to interpolation and rotation routines for more
1387       reasonable treatment of North Pole singularity: for tracers North Pole
1388       value is set to northernmost zonal-mean value, for zonal velocity it is
1389       set to zero, and for meridional velocity it is set to northernmost value.
1390    o pkg/exf/exf_check_range.F
1391     - add tile index to diagnostics and move stop statement to the very
1392       end of the routine.
1393    o pkg/diagnostics: (diagnostics_main_init.F)
1394      define title of isomorphic variables according to the current config.
1395    o pkg/thsice with pkg/seaice dynamics:
1396    - fix domain of computation (interior only, required for exf) and do exchanges
1397    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1398    o towards a standard way of dealing with multi-threading in MONITOR
1399      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1400    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1401       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1402    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1403    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1404    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1405       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1406    o tracer advection:
1407     - clean-up and simplify calc_common_factors.F
1408     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1409       advection subroutine (but still not used within DST advection S/R)
1410    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1411    
1412    checkpoint58j_post
1413    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1414      from file (collects calls previously in FORWARD_STEP)
1415    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1416    o adjoint store dir. adjusted accordingly
1417    o genmake2
1418      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1419    
1420    checkpoint58i_post
1421    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1422      on wind stress (SEAICEstressFactor defaults to 1.)
1423    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1424      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1425    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1426      on CS-grid: no longer loosing mass.
1427    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1428    o pkg/ggl90: fix sloppy output and fix a bug
1429    o pkg/seaice: added SEAICEuseEVPpickup parameter
1430      - Set to false in order to start EVP solver with
1431        non-EVP pickup files when using SEAICEuseEVP
1432      - fix sign error in diffusion in seaice_calc_rhs
1433    
1434    checkpoint58h_post
1435    * Modifications for bottom topography control
1436      o replace hFacC by _hFacC at various places
1437      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1438      o add non-self-adjoint cg2d_nsa
1439      o update autodiff support routines
1440      o re-initialise hfac after ctrl_depth_ini
1441      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1442    * Adding verification for 5x5 box (4-layer) bottom topography control
1443    
1444    checkpoint58g_post
1445    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1446       used for mean seasonal cycle, mean diurnal cycle); add an example
1447       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1448    o pkg/ggl90:
1449      - add parameter (minimum surface kinetic energy)
1450      - fix bug (avoiding division by zero)
1451    o couple pkg/thsice to pkg/seaice:
1452      - modify advection in seaice to accomodate new scalar fields to be advected
1453      - only muliDimAdection scheme work with seaice/thsice
1454      - mapping of thsice-variables to seaice-variables, back and forth
1455      - does not break the verification experiments, but does not give the
1456        desired results either
1457    o pkg/seaice
1458      - make (default) second order advection a bit less confusing?
1459    
1460    checkpoint58f_post
1461    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1462      to pkg/seaice):
1463      - new routines thsice_map_exf and thsice_get_exf provide the interface
1464      - add an additional formal parameter to thsice_solve4temp
1465    o pkg/exf:
1466      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1467      - correct Stefan-Boltzmann constant
1468      - new parameter for longwave surface emittance
1469      - separate some stuff from exf_bulkformulae into new routines  
1470        exf_radiation, exf_wind
1471      - add new parameters and constants: longwave emissivity for ocean, ice
1472        and snow, evaporation parameters over ice
1473      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1474        either wind from stress or stress from wind
1475    o pkg/thSIce:
1476    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1477    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1478       and THSICE_CALC_THICKN
1479    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1480    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1481      to make debugging easier.
1482    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1483    o pkg/bulk_force:
1484      - clean-up comments and parameters ;
1485      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1486    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1487      generate new output for test-experiment: aim.5l_cs.thSI
1488    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1489      testreport accordingly
1490    
1491    checkpoint58e_post
1492    o SEAICE_CGRID adjoint done
1493    o R_STAR adjoint implemented.
1494      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1495      * need to sort out init. of h0facc, etc.
1496    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1497      to be able to use it in pure forward.
1498    
1499    checkpoint58d_post
1500    o upgrade simple test-experiment to tutorial example:
1501     step.1: duplicate the experiment and (step.2) will remove the old copy.
1502      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1503      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1504      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1505      tutorial_global_oce_biogeo    <- copy of dic_example
1506      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1507      tutorial_plume_on_slope       <- copy of plume_on_slope
1508      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1509      tutorial_global_oce_optim     <- empty for now (David ?)
1510      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1511     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1512    o correct a sign problem in cost_scat.F
1513    o obcs and ptracers: fix boundary conditions for advections schemes
1514      with larger stencil
1515    o thsice adjoint: start
1516    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1517      completeness
1518    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1519      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1520    o ptracers adjoint:
1521      * avoid extensive recomputatations
1522      * fix missing re-init. of gptr (missed by TAF)
1523    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1524      me to turn off the excessive output to STDOUT that this package produces
1525    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1526      and add those terms in Vector-Invariant formulation.
1527    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1528      if the control period (xx_hfluxperiod etc) is 0
1529    o in profiles pkg, clean routines and fix details
1530    o in ecco pkg, reading ssh data:
1531      fix problem in case the model does not start at iter0=0
1532    o fix mnc-pickup/restart for ptracers
1533    o new package prifiles:
1534      code to compute profile-based cost by Gael Forget
1535      (modifs in ecco, ctrl, autodiff)
1536    o Benign bug fix in initialization (spotted by M. Mazloff) of
1537      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1538    
1539    checkpoint58c_post
1540    o adjoint: finish NLFS adjoint and provide reference output in
1541      verification/global_ocean.90x40x15/results_ad_nlfs
1542    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1543      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1544      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1545      with SEAICE_CGRID defined.
1546    o move calendarDumps from "data" to "data.cal" and clean-up the code
1547      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1548    o add useEXF & useCAL flags (for now, set in hard-coded way)
1549    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1550      (were missing in NH mode, and wrong in quasihydrostatic mode).
1551      waiting for Chris updated version of calc_gw to add those CALLs.
1552    o fix bug in quasihydrostatic S/R ;
1553      add a test for this option: global_ocean.90x40x15.qshyd
1554    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1555      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1556    o add on/off flag useOffLine for package OFFLINE
1557    o seaice:
1558      - modify advection so that it works also on the C-grid
1559      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1560        problem in multi-tile runs with C-grid
1561      - add flags for clipping ice velocities and/or masking solver forcing
1562      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1563        C-grid solver
1564      - added a few comments to seaice_diffusion.F
1565      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1566        are now exclusive)
1567      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1568        required re-ordering the code a little:
1569       + make DAIRN global variable (defined in SEAICE)
1570       + move computation of the viscosities eta and zeta into a new separate
1571         routine (because I need to recompute them in seaice_ocean_stress.F)
1572    
1573    checkpoint58b_post
1574    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1575      update output.txt of exp. aim.5l_cs.thSI
1576    o various mnc cleanups and improvements:
1577      + shrink lookup tables by factor of ~4
1578      + better error reporting when running out of lookup space
1579      + able to handle longer path/file names (up to 500 chars)
1580    o adjoint:
1581      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1582      - TBD: "hidden" mom_vecinv recomp. in dynamics
1583    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1584     (allow to differentiate between forcing components using new integer flags:
1585      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1586     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1587    o ecco
1588      - enable trend removal from SSH anomaly obs.
1589    o adjoint
1590      - a fix for PmEpR when #undef EXACT_CONSERV
1591      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1592      - try to fix "hidden" recomp. in forward_step for NLFS
1593        (NLFS seems broken sometimes after I checked it in)
1594    o seaice:
1595     - add c-grid version of the dynamic solver:
1596       + three new routines that are the c-grid substitute lsr, dynsolver
1597         and ostres
1598       + put a few fields that were local to dynsolver into global common
1599         blocks, so that I can move the computation of stresses etc into
1600         seaice_lsr (saves coding but may break the adjoint).
1601     - replace more hardwired parameters by runtime parameters
1602     - add ice masks that mask the rhs of the implicit solvers where there
1603       is no ice (commented out in seaice_dynsolver, because i am not sure
1604       if this works properly), eventually this should replace the clipping
1605       of ice velocities in seaice_dynsolver to +/-40cm/s.
1606    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1607      include it only where its needed
1608    o move balancing of fluxes before the call of external_forcing_surf
1609    o seaice:
1610      - correct units of turning angles (now they are really in degrees)
1611      - move computation of GWATX/Y out of main routine into dynsolver
1612      - initialize GWATX/Y in seaice_init
1613    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1614      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1615    o seaice: add runtime flags for turning angles (default to zero)
1616    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1617      and trend from exf forcing and ctrl control adjustments
1618    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1619      (since checkpoint57x_post)
1620    o change the default rotation period to 86164.s = the Earth rotation
1621    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1622      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1623    o seaice advection: add code for choosing between the default (2nd order
1624      central differences) and multiDim advection schemes provided by
1625      pkg/generic_advdiff
1626    o seaice:
1627      - removed all references to SEAICE_GRID.h fields from
1628        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1629        (cubed-sphere configuration will change a little)
1630      - grid computations in seaice_init are obsolete now.
1631      - cleaned up code a little so that is easier to read (hopefully).
1632      - added new (better?) discretizations of default advection and diffusion
1633        (turn on with SEAICEuseFluxForm)
1634      - replace 1 in 3d global fields by kSurface in growth.F
1635      
1636    checkpoint58a_post
1637    o seaice:
1638      - bug fix in advect.F
1639    o shelfice:
1640      - separate shelfice load anomaly from pload (breaks with time
1641        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1642        Its default is 0., but it may be computed more cleverly from (unknown)
1643        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1644        done offline. A good approximation of the pressure load anomaly is
1645        necessary to avoid large initial adjustment processes underneath
1646        deep-reaching shelfice.
1647      - small fix in ISOMIP shelfice_thermodynamics
1648      - add more sophisticated thermodynamics of Hellmer (1989), this is
1649        now the default
1650      - give a few constants more intuitive names
1651    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1652      if bulk formulae are used in long integration (especially EmPmR). Turn
1653      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1654      if balancePrintMean, the imbalance that is substracted is printed to
1655      STDOUT.
1656    o fix bug (typo) in obcs_apply_eta.F
1657    o add a new package shelfice which enables us to model the circulation
1658      underneath shelf-ice with draughts of hundreds of meters.
1659     - works
1660     - to do: + include improved thermodynamics
1661              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1662                instead of new field kTopC
1663              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1664                instead of new field R_shelfIce and new code in ini_depth.F
1665                and ini_mask_etc.F?
1666              + adjust vertical mixing schemes?
1667    o seaice pkg:
1668     - add a cpp-flag to include a simple formula for a salinity dependent
1669       freezing point of sea water at the surface
1670     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1671       meridional stresses are now different (and hopefully correct)
1672    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1673       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1674       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1675    o pkg/diagnostics: add options and parameters for regional-statistics
1676       diagnostics ; define regions by reading a region-mask from a file
1677       (might add other options later)
1678    o pkg/bulk_force:
1679     - add option and parameters to use AIM surface-flux formulae.
1680     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1681       others forcing fields (defined in PARM05, parameter file "data") are loaded
1682       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1683     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1684     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1685     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1686       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1687     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1688    
1689    checkpoint58
1690    o add "--embed-source" option to genmake2 which, when the supporting
1691      tools can be compiled (as determined by genmake2) will turn on the
1692      embed_files package which then embeds the entire MITgcm source code
1693      (*.[fFhc] + Makefile) used for the build within the executable
1694      - requested by CNH but off by default
1695      - adds a paltry <9MB to the mitgcmuv executable in most cases
1696      - only writes the output when useEMBEDSRC in eedata is true
1697    o clean up 3-dim. relaxation codes:
1698      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1699      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1700      * Thanks to Tom Haine for testing!
1701    
1702    checkpoint57z_post
1703    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1704      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1705    o fix the pickup behavior for obcs in combination with ptracers
1706    o fix a bug in ptracers_external_fields_load
1707    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1708      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1709    o transfered surface NH pressure to eta field (if exactConserv).
1710    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1711         and update lab_sea output.txt file.
1712    o completing 3-dim. relaxation code: additional term
1713         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1714      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1715      * At compile time, in "EXF_OPTIONS.h" set
1716          #define  ALLOW_CLIMTEMP_RELAXATION
1717          #define  ALLOW_CLIMSALT_RELAXATION
1718      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1719          tauThetaClimRelax3Dim = 15552000.0,
1720          tauSaltClimRelax3Dim  = 15552000.0,
1721      * 3 cases:
1722          1) Use a constant-in-time 3-dim. field
1723          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1724          3) Real-time relax. to time-evolving prescribed field
1725    o Adding Laplacian-type smoothness constraint on
1726      initial and boundary (forcing) controls (ic, bc)
1727      * enable at compile-time via
1728        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1729      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1730      * Absolute scale somewhat unclear so far
1731      * no area weighting was included since no other cost term does so far
1732    
1733    checkpoint57y_post
1734    First step for a NLFS adjoint
1735    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1736    o new init. routines for calc_r_star, calc_surf_dr
1737    o still need to deal with ini_masks_etc
1738    o testreport seemed happy
1739    checkpoint57y_pre
1740    
1741    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1742    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1743    o add new offset feature to offline pkg (plus minor cleanup)
1744    o cfc fixes for final year of integration
1745    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1746      be in GCHEM_OPTIONS).
1747    
1748    checkpoint57x_post
1749    o fix testreport Pb in multiple test experiment.
1750    o cleanup our namelist syntax in verification:
1751      - make it more F95 standards compliant (some work still needed)
1752      - allows the vast majority of our tests to work with gfortran
1753    o Non-Hydrostatic:
1754     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1755     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1756    o Allow to apply AB on T,S rather than on AB(gT,gS):
1757     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1758     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1759       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1760     - need a "clever" read_pickup to restart from the other AB formulation
1761    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1762    o remove some unused variables (reduces number of compiler warnings)
1763    o adjoint
1764      * Disable useVariableViscosity for adjoint for time being
1765        (there are a number of extensive recomputations)
1766      * Initialize certain variables needed for adjoint
1767    
1768    checkpoint57w_post
1769    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1770                 fix the singleCpuIO RS version of MDSWRITEFIELD
1771       and add a WARNING if using globalFiles=T with multi-processors.
1772    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1773      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1774    o tracer advection scheme:
1775      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1776       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1777       was not very convenient).
1778      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1779       (further tests needed for the implicit DST & Flux-Limiter schemes).
1780    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1781      and sRef for convenience, handy, when you want to initialize
1782      ptracers in a large domain with a constant non-zero value. Also,
1783      untangle ptracers_init.F a little.
1784    
1785    checkpoint57v_post
1786    o change dome exp. to use variable viscosity in side-drag terms.
1787    o remove all the files from the cfc_offline test since they are now
1788      incorporated into tutorial_cfc_offline which has been producing
1789      identical results for a few days of testing
1790    o add new parameter: sideDragFactor to enable half-slip-side BC
1791      and change side-drag S/R to use viscosity from mom_calc_visc
1792      (can switch back by setting sideDragFactor=0.); affects results at
1793      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1794       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1795    o vorticity & strain are now computed without masking, to account for
1796      no-slip-side BC in variable viscosity calculation ; mask is applied
1797      anyway later on, before computing advection/coriolis terms.
1798    o modify exp4 to test new obcs support for reading from external files
1799      and for passive tracers
1800    o fix behavior of ptracers_monitor when monitor output is written to a
1801      netcdf-file; still not independent of monitor.F (writes in the same
1802      file).
1803    o change default value of tRef (put a uniform, meaningful value for ocean
1804      & atmos) and initialize sRef (was missing, as Martin mentioned).
1805    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1806      to be proportional to enstrophy dissipation length.  Thus,
1807       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1808      This is now consistent with Smagorinsky and with the manual.
1809    
1810    checkpoint57u_post
1811    o OBCS and PTRACERS: add open boundary support for passive tracers
1812      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1813        OB-values from file; this is not different from the way theta and salinity
1814        are treated
1815      - however, Orlanski-radiation conditions are not supported, and the model
1816        will stop if you use pTracers and Orlanski at the same time.
1817      - beefed up the rountine obcs_external_fields_load: now only those open
1818        boundary values are overwritten with values from files for which there
1819        are really files, otherwise the OB-fields remain untouched. This makes
1820        it possible to use different OBs at different ends of the domain (as
1821        with EXF)
1822    o reduce number of exch calls in shap_filt (s2).
1823    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1824      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1825    
1826    checkpoint57t_post
1827    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1828    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1829      same truncation, independent of the face number: affects affects several
1830      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1831    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1832      note that biharmonic viscosity + no-slip was not tested in any experiment.
1833    o fix bug in non-linear free-surf side-drag ; generate new output for
1834      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1835    o make mnc honor the writeBinaryPrec flag for most kinds of output
1836    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1837    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1838      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1839    o add brackets in multi-terms sum to get same truncation, independent of
1840      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1841      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1842    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1843      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1844      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1845      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1846      Suggested values of viscosity parameters found in mom_calc_visc.
1847      Many new viscosity diagnostics available.
1848    
1849    checkpoint57s_post
1850    o Add clearing-house for viscosity calculations, mom_calc_visc and
1851      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1852      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1853      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1854      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1855      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1856      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1857      ViscAhStrain and viscAhTension are now retired.
1858    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1859    o In response to JMC's bug report, genmake2 now ignores any soft-links
1860      that it finds in the *current* directory when searching for files.
1861      Soft-links found in any other source directories will still work as
1862      they did before.
1863    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1864      a C routine to unlimit the stack size
1865    o mnc-ify pkg/aim snapshot vars
1866    o mnc-ify pkg/land as requested by Daniel
1867    o various changes to mnc including:
1868      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1869      - output can now be grouped so that all files within a group
1870          change the ITER portion of their names in lock-step together
1871      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1872          and works with both EXCH1 and EXCH2 (but needs more testing)
1873      - writing works for all verification test cases w/ g77 on Linux
1874    
1875    checkpoint57r_post
1876    o make MNC variable initialization happen earlier
1877    o add diagnostics for (almost) each term of the momentum Eq.
1878    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1879    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1880    o remove MINIMAL_TAVE_OUTPUT option ;
1881      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1882    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1883      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1884    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1885    o add time-dependent SST, SSS control
1886    o cost terms in ecco/ modularized (new cost_generic.F)
1887    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1888    o new infrastructure for seaice model vs. obs misfits in seaice/
1889      * driver from the_main_loop.F is seaice_cost_driver.F
1890      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1891      * gradient check in Exp. 6a of natl_box_adjoint/
1892    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1893      (see README file)
1894    
1895    checkpoint57q_post
1896    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1897    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1898      - bug was reported by Jean-Michel and Ian Fenty
1899    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1900      update exp. cpl_aim+ocn output.
1901    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1902      Needed for high-res. runs with large global files
1903      to be able to limit tapelev size
1904    o Changed some tests for adjoint:
1905      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1906      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1907      * global_ocean.90x40x15/ back to default 3-level checkpointing
1908    o Modifications to enable scripted COMMON to MODULE conversion
1909      * verification/OpenAD/code/ has necessary scripts and description;
1910      * converts, compiles and runs successfully;
1911    
1912    checkpoint57p_post
1913    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1914    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1915      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1916    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1917    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1918      (was already the case for dissipation with mom_vecinv,
1919       and also the case for grad.PhiHyd when staggered-timeStep)
1920      This will allow to put dissipation out-off the AB time-stepping.
1921     Unfortunately, affects truncation error. Update output of exp. that "fails"
1922      (cg2d matching number) and leave the others for later: front_relax(10),
1923      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1924      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1925    
1926    checkpoint57o_post
1927    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1928      (2) its ready to be documented during the 20050801 DocFest
1929    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1930      for ideal_2D_oce and lab_sea on linux_ia32_g77
1931    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1932      in global1x1_tot/code_seaice_adj to access indices 32, 33
1933      (worth another tag)
1934    
1935    checkpoint57n_post
1936    o adding precip control xx_precip 32
1937    o adding swflux control xx_swflux 33
1938    o Replacing 10 forcing penalty cost routines by 1 generic.
1939    o Implementing partitioning in time-mean and variable adjustment
1940      for atmos. state.
1941    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1942    o in natl_box_adjoint:
1943      * updated exp 1 to 10
1944        (but does not have time-mean vs. variable split results yet)
1945    o updated global1x1/*_seaice_adj/
1946      to incorporate latest changes
1947    o enable useSingleCpuIO for mdsio vector routines
1948      (applies in particular to tapelev I/O)
1949    o removed inefficient K-loop in all active_file*control*.F
1950    
1951    checkpoint57m_post
1952    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1953      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1954    o pkg/exch2: filling of face-corner halo regions is optional
1955      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1956    
1957    checkpoint57l_post
1958     tag before updating tutorials (pre-release-2)
1959    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1960       for output and interpolation of input fields onto model grid)
1961    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1962       Affects results of exp. rotating_tank ; update output.txt.
1963    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1964          and taking the square quantity and/or using a fraction-weight field.
1965    o fix aim_diagnostics_init.F mate numbers.
1966    o add mnc output capability to diagnostics/diagstat and update
1967      our cvsignore files for the ACSII output generated
1968    
1969    checkpoint57k_post
1970    o lab_sea now uses diagnostics package and provides a suite of
1971      new EXF diagnostics output.
1972    
1973    checkpoint57j_post
1974    o exf
1975      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1976        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1977        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1978      * extended diagnostics output
1979        - now includes all EXF variables
1980        - hs, hl moved to common block
1981        - separate S/R for diagnostics, called after ctrl vector is added
1982        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1983        - EXFqnet contains true Qnet (i.e. includes qsw)
1984      * updated verif. lab_sea, global_with_exf
1985      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1986        to ensure that diagnostics sees a true EXFqnet
1987    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1988    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1989      several times with different frequencies.
1990    o mnc-ify the thsice package as requested by Daniel Enderton
1991      - the monitor--MNC output needs work
1992      - many attributes need to be added (most are currently blank)
1993    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1994      - many attributes need to be added (most are currently blank)
1995    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1996    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1997    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1998      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1999         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
2000    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
2001     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
2002    
2003    checkpoint57i_post
2004    o Diagnostics package was changed: diagnostic allocation is now deactivated
2005      by setting an empty file name in the namelist (used to be by setting 0 frequency)
2006    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
2007      add 1rst Order upwind vertical Shear.
2008    o add a quick fix for A/B checkpointing in OFFLINE mode
2009    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
2010      end-run around the C/Fortran linking horror in eesup/src/timers.F
2011    o added pkg/runclock: allows user to terminate run based on wall clock
2012    o added non-hydrostatic scaling parameter: nh_am2
2013    o pkg/my82: futile attempt to make results compiler-independent by adding
2014      some "_d 0", etc. no effect.
2015    o for mnc output, fill the 'T' coordinate var with myTime and create a
2016      separate 'iter' variable for iteration count
2017    o pkg/diagnostics:
2018      add new capability: output of Global/Regional & per-level statistics ;
2019      tested against monitor output (including land & thSIce) on various exp.
2020    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
2021    
2022    checkpoint57h_done
2023      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
2024      data.diagnostics, data.gchem, data.ptracers) is done.
2025    
2026    o pkg/diagnostics: prepare for Global/Regional statistics.
2027      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
2028    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
2029      and rename it: DIFFERENT_MULTIPLE
2030    
2031    checkpoint57h_post
2032    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
2033    o pkg/diagnostics: change output frequency, now in seconds (instead
2034      of Nb of iterations). This requires to change data.diagnostics.
2035    checkpoint57h_pre
2036    
2037    o in mnc, let the user create the output dir if both mnc_outdir_date
2038      and mnc_outdir_num are false
2039    o add fflags() to pkg/diagnostics which allows one to specify, on a
2040      per-file basis, the file precision [default behavior is unchanged]
2041    o added diagnostics to pkg/kpp, including computation of mixed layer
2042      depth based on a temperature/density criterion
2043    o updated verification/natl_box to test the new pkg/kpp diagnostics
2044    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
2045    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
2046    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
2047      not mnc -- this mistake was found by JMC and is now corrected
2048    
2049    checkpoint57g_post
2050    o add Adams-Bashforth 3rd Order time stepping:
2051      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
2052      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
2053    checkpoint57g_pre
2054    
2055    o make lambda[Theta,Salt]ClimRelax spatially varying
2056      (default remains spatially uniform constant based on tau)
2057    o added new control variables
2058      * init. uVel, vVel, etanN
2059      * lambda[Theta,Salt]ClimRelax
2060    o separate masks used for ctrl_pack/unpack 'from write_grid' output
2061      (suggested by G. Forget)
2062    
2063    checkpoint57f_post
2064    o add parameter "baseTime" = model base time = time at iteration zero
2065      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
2066      account for baseTime shift
2067    o move Coriolis arrays from PARAMS.h to GRID.h
2068    checkpoint57f_pre
2069    
2070    o mnc-ifying the seaice package
2071    o introduced an alternative length scale calculation for use in the limiting
2072      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
2073    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
2074    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
2075      as well as grad(vort3).  Made it compatible with both approximate form
2076      for the cubed sphere and full form of these gradients.  Added flag
2077      useFullLeith to select between approximate and full form.  
2078    o add "d0" in getcon.F to reduce differences between compilers/platforms
2079      update output.txt of exp. fizhi-gridalt-hs
2080    o change port_rand funtion to allow to set the seed.
2081    o fix obscure MNC bug involving conversion between reals and integers
2082      - it caused no problems with certain (eg. gcc, ifc) compilers but the
2083        new version is now more standards-compliant
2084    o adjoint-related modifications
2085      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
2086      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
2087      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
2088    
2089    checkpoint57e_post
2090    o Adding eddy stress controls a la Ferreira et al.
2091    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
2092    
2093    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
2094      update output.txt of exp. fizhi-gridalt-hs
2095    o add more "Z" dimensions and associated coordinate vars to MNC
2096    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
2097    o parameter calendarDumps: when set, approximate months (30-31 days) and years
2098      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
2099      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
2100      months and years.  Requires pkg/cal.
2101    o diagnostics: add pickup functionality
2102      - off by default for backwards compatibility
2103      - current version only uses MDSIO -- MNC will be added
2104    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
2105    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
2106    
2107    checkpoint57d_post
2108    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
2109    o modify verification/ideal_2D_oce so that it tests the creation of mnc
2110      output from the diagnostics package
2111    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
2112    o make genmake2 more portable by using ".$FS" instead of ".f" for more
2113      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
2114    o add coordinate variables to the MNC output from the diagnostics package
2115    o change MNC-flags default value: true when useMNC=TRUE
2116    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
2117      the ability (off by default) to read the grid information using MNC
2118    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
2119    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
2120    o do snap-shot diagnostics at the middle of the time-interval (instead of
2121      at the end).
2122    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
2123      new test for AIM with thSIce + slab-ocean
2124    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
2125    o move state variable diagnostics to the beginning of the time step ;
2126      (note: still needs some work specially for snap-shot diagnostics)
2127      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
2128    
2129    checkpoint57c_post
2130    o Change testing option (-ieee) to get closer agreement between g77 & ifort
2131    o generate new output.txt files on faulks with g77 & the new -ieee option
2132    checkpoint57c_pre
2133    
2134    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
2135      update output.txt of exp. global_ocean.90x40x15
2136    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
2137      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
2138    o add saltFlux(+File) forcing capability with periodicExternalForcing
2139    o allow to use pkg diagnostics for GM-Redi & ThSIce output
2140    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
2141    o improvements for the MNC output from DIAGNOSTICS:
2142      - correct handling of the unlimitied dimension
2143      - all dims now have associated coordinate variables
2144      - variables located at U, V, and Corner ("Z") points are now written
2145        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
2146        *all* data points are output
2147    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
2148    o added pkg/seaice/seaice_monitor.F
2149    o mdsio_readfield.F can now read files visible only to master MPI process.
2150    o pkg/seaice: some test code for ice-modified ocean stress
2151    o exf_getffields interpolation defaults to bilinear for all scalar forcing
2152      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
2153      spurious negative numbers for precipitation and humidity.  Will cause
2154      some small numerical differences for integrations using pkg/exf/exf_interp.F.
2155    o pkg/ctrl/
2156      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
2157        May be enabled via doPackDiag
2158      *  introduce z-scaling of
2159         + gradient (doZscalePack) and
2160         + control (doZscaleUnpack)
2161    o pkg/mdsio/
2162      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
2163      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
2164    
2165    checkpoint57b_post
2166    o simplify options in diagnostics_fill arguments (remove weird combinations)
2167    o fix MNC coordinate variables so that they now contain per-face index
2168      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
2169      general, EXCH2 grids are only aligned to a "local" coordinate system
2170    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
2171    o Implement instantaneous output within pkg diagnostics:
2172      setting a negative frequency in data.diagnostics produces
2173     "snap-shot" output (as opposed to time-average if freq > 0)
2174    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
2175      NOTE: change ptracer diagnostics name: use 2 characters to work with
2176            more than 9 tracers. Add also diagnostics of advect & diffus flux.
2177    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
2178      becomes the coordinate variable for the 'T' dimension
2179    o add CF-style coordinate variables to MNC
2180      - just a first cut:  numbers are meaningless on the cubesphere and
2181        missing along the T axis but otherwise it works!
2182    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
2183    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
2184    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
2185      this is based directly on what the model compute, so that the content of
2186      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
2187    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
2188    o clean up build options files for SunOS, in particular
2189      - remove -traditional from xmakedepend
2190      - change -xarch=v9 to -xarch=native for f77
2191      - restore use of make (not gmake)
2192      - add CC=gcc if using g77
2193    o changes per discussion of AM, JMC, & EH3 today:
2194      - move redundant "grid" variables out of "state" -- in preparation of
2195        creating proper CF-style coordinate variables and in recognition
2196        that any/all grid variables can be easily copied (eg. w/NCO) from
2197        the grid files into any of the other NetCDF files
2198      - *always* output grid variables with MDSIO (this will eventually be
2199        changed)
2200      - output MNC grid file if useMNC is true
2201    o every instance of _END_MASTER() has been found and replaced with
2202      _END_MASTER( myThid ) in order to satisfy certain picky Sun
2203      preprocessors
2204    o re-arrange diagnostics pkg initialisation:
2205     - allow each package to extend the available diagnostics list
2206     - add some checking and fix small problems (multi-threaded, ...)
2207     - new S/R diagnostics_fill (replace fill_diagnostics):
2208       look through the short list of active diag. (instead of the long list)
2209       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
2210    
2211    checkpoint57a_post
2212    o this set of changes restores TAMC compatibility
2213      tested for global_ocean.90x40x15 adjoint on trough
2214      (what a pain)
2215    
2216    checkpoint57a_pre
2217    o some modifs in tools/build_options for sunos
2218    o call ctrl_pack for ctrl at end for optimcycle=0
2219    
2220    checkpoint57
2221    o add horizontal bi-harmonic viscosity for vertical velocity
2222      - new parameter viscA4W (defaults to viscA4)
2223      - affects only non-hydrostatic code
2224      - to be done: no-slip lateral boundary conditions
2225    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
2226    o implement Implicit Vertical advection for pTracers
2227    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
2228      (implemented also for implicit vertical diffusion & advection)
2229    o OBCS: extend application of tracer open boundary conditions
2230      to a strip beyond the boundary of width Olx/Oly
2231    o add call monitor to TAF set of required calls (flow directives)
2232      and include in natl_box_adjoint
2233    o untangle a few ifdefs related to cost, ctrl, autodiff
2234      untangel a few ALLOW_ECCO_OPTIMIZATION
2235    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
2236      (theta2, salt2 in ecco_cost_weights)
2237    
2238    checkpoint56c_post
2239    o OBCS as control variables
2240      - update ctrl_ad_diff.list, obcs_ad_diff.list
2241      - remove balance of obcs controls from default
2242      - fix index bug nobcs in ctrl_init
2243      - fix dummy fields filen in ctrl_pack
2244      - add dummy weights for obcs
2245    o lsopt: comment out fort.94 output
2246    o optim:
2247      - remove unnecessary header files
2248      - adjusted namelists
2249      - add xerbla.F to Makefile
2250    o exf:
2251      - multiple modifications of exf_check_range
2252      - unit change in exf_init_runoff from [m/year] to [m/s]
2253    o mdsio:
2254      - i/o-vector change debugLevel from debLevA to debLevB
2255    
2256    checkpoint56b_post
2257    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
2258      is called from DO_THE_MODEL_IO
2259      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
2260      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
2261      - clean up PTRACERS_WRITE_TIMEAVE a little
2262    o add another verification experiment that tests both the cfc-pkg and
2263      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
2264      reactive tendencies treated inline with regular timestepping
2265    o testreport previously did a lousy job of comparing small numbers, so
2266      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
2267      implemented in the little c-progam tmp_cmpnum.c which is embedded in
2268      testreport.
2269    o ptracers_monitor: bug fix for MPI
2270    
2271    checkpoint56a_post
2272    o GCHEM: finish reorganizating the package
2273      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
2274        (introduces another 3D-array for each passive tracer, but only if
2275        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
2276        gchemTendency is not needed because the timestep is done separately)
2277      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
2278      - GCHEM is now---more or less cleanly---separate from PTRACERS
2279      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
2280        so clear to me how that should be done in a general way.
2281    o CFC: improve formatting of output in CFC_ATMOS
2282    o PTRACERS:
2283      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
2284        that ALL experiments with ptracers enable can be checked. This makes
2285        GCHEM_MONITOR obsolete.
2286      - include a runtime parameter PTRACERS_monitorFreq that defaults to
2287        monitorFreq
2288      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
2289    o add PTRACERS (PTR0[1-5]) to testreport output
2290    o exf_check_range:
2291      * default changed to .TRUE.
2292      * will check values for niter0 if debLevA, every timestep if debLevB
2293      * STOP in exf_check_range if 'out of range'
2294      * range chosen generous to allow for potential extema
2295      TBD: a version with stricter range
2296           permitted range would be runtime parameters
2297    o GMredi:
2298      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
2299      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
2300      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
2301    o GCHEM:
2302      - move call to GCHEM_FORCING_SEP, so that it is now called before
2303        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
2304      - introduced a useGCHEM runtime flag and applied it everywhere.
2305      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
2306        this flag is now only visible within GCHEM-pkg routines.
2307      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
2308        be replaced by a 3D array that is computed before thermodynamics; for
2309        this, the tracer ID iTracer had to be included into the parameter list
2310        of ptracers_forcing
2311      - set up forward_step to call gchem_forcing, that will replace
2312        gchem_forcing_int in ptracers_forcing
2313      - cleaning up
2314    o small cleaning of exch2: remove files that are also in eesupp/src
2315    
2316    checkpoint56
2317    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
2318    o mnc: cleanup "full" files--fixes out-of-memory problem
2319    o ECCO-GODAE
2320      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
2321      * fully merged and updated from SIO code
2322        windstress sign change affects
2323        - exf_inscal_[u/v]stress
2324        - sign of xx_tau[u/v] adjustments
2325        - signs in cost_scat
2326      * ctrl_get_gen: avoid update of tau[u/v] for first few days
2327      * natl_box_adjoint updated and compressed
2328      * 2-level checkpoint switch added
2329        (tested in EXP. 1 of natl_box_adjoint)
2330      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
2331    o SVD
2332      * first complete, non-hacked version for SVD calculations
2333      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
2334        performed via direct access files admtlm_vector.it????
2335        (via ctrl_[un]pack)
2336      * optimcycle is used for ARPACK iteration counter
2337        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
2338      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
2339        and add linear transforms where necessary
2340      * controls are initial/final SST, SSS (can be extended; need to check
2341        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
2342    o mdsio: filename info to both stderr, stdout
2343    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
2344      from sign change
2345    
2346    checkpoint55j_post
2347    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
2348      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2349    o add consistent build directories and .cvsignore files to verification
2350    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
2351    o make all subroutines 30 or less characters in length for certain older
2352      compilers to work (a thorough search only turns up two routines in
2353      pkg/ptracers)
2354    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
2355      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2356    
2357    checkpoint55i_post
2358    o change arrays for total vertical diffusivity (2.D if explicit,
2359      3.D if implicit) ; each ptracer uses its own background value.
2360    o added mnc/NetCDF output capability to ocn_compon_interf
2361      - added bits to verification/cpl_aim+ocn so that it can run on
2362        ITRDA and other clusters without the mpirun "-wd" option
2363    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
2364      configuration
2365    o give MNC the ability to create additional files rather than
2366      exceeding a specified file size limit "MNC_MAX_FILESIZE"
2367      - the default is just less than 2GB which is a practical limit
2368        on many systems
2369    o Compute the non-local term using either KPP vertical diffusivity (=default)
2370       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
2371    
2372    checkpoint55h_post
2373    o add verification test "vermix"
2374    o remove all the *_ioinc flags and replace with the single global
2375      outputTypesInclusive flag
2376    o allow to set a vertical profile of vertical diffusivity for T & S
2377    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
2378    o useMNC moved from data.mnc to data.pkg
2379    
2380    checkpoint55g_post
2381    o Renaming carbon AD experiments to comply with testreport conventions
2382    o Updating adjoint of Held-Suarez hs94.1x64x5
2383    o Fixing directives for non-ECCO forward_step, after ECCO directives
2384      have been fixed to avoid recomp. of do_oceanic_phys
2385      Works well for global_ocean.90x40x15,
2386      but recomp. issue remains for carbon
2387    o Updating adjoint output for natl_box_adjoint after
2388      pkg/ecco has been modified (see taga c55d_post)
2389    
2390    checkpoint55f_post
2391    o rename to timeave_init_fixed
2392    
2393    checkpoint55e_post
2394    o some delicate re-shuffle of store directives to avoid one
2395      extra call of do_oceanic_physics
2396      affects ecco_the_main_loop.F, do_oceanic_physics.F
2397      checkpoint_lev1_directives.h
2398    o NB: this may break global_ocean adjoint temporarily,
2399      but it is clear how to fix it. Will do later, need this now.
2400    
2401    checkpoint55d_post
2402    o ECCO specific cost function terms (up-to-date with 1x1 runs)
2403    o ecco_cost_weights is modified to 1x1 runs
2404    o modifs to allow observations to be read in as
2405      single file or yearly files
2406    o enable to read exf forcing fields as either
2407      single file or yearly files (flag useExfYearlyFields)
2408    checkpoint55d_pre
2409    
2410    o switch between 2-level and 3-level checkpointing
2411    o add ability of MNC to write local and "partial" (eg. 2D slices where
2412      the full 3D field is never actually stored) arrays to NetCDF files
2413      with the correct (that is, the complete multi-dimensional) set of
2414      array indicies
2415      - used in mom_vecinv() to write the diagFreq output
2416      - tested (demonstrated) in verification/aim.5l_cs
2417    o further mnc-ification
2418      - add verification/lab_sea to the list with mnc setups
2419      - fix undefined mnc v-names in cd_code
2420      - add kpp to mnc output (both snapshot and timeave)
2421    o non-hydrostatic code
2422      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
2423        in calc_gw.F
2424      - defaults to viscAh
2425      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
2426        friction or Leith) in non-hydrostatic mode, as long as there is
2427        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
2428    o pkg/cost
2429      extend simple cost functions to treat time mean quantities
2430      (T,U,V) via cost_accumulate_state from cost_tile
2431    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
2432        be 2 times larger than the minimum size the advection scheme requires.
2433        now get a perfect conservation of salt in advect_cs test-exp (updated)
2434    o GGL90 (Gaspar's TKE mixed layer)
2435      - add horizontal diffusion of TKE, requires exchanges in
2436        do_fields_blocking_exchanges, horizontal diffusivity is zero by
2437        default. In OPA there is no horizontal diffusion of TKE but the
2438        mixing coefficients are computed from a horizontal average of TKE of
2439        6 points or so. I think that diffusion has a little more physical
2440        justification.
2441      - clean up ggl90_calc in the hope of reducing memory usage (this hope
2442        was in vain)
2443      - mask tke-variable in ggl90_init
2444    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
2445    o fix biharmonic diffusion on CS-grid.
2446    o more obcs stuff
2447      - added obcs_external_fields_load as an alternative to the EXF-pkg option
2448        for reading boundary values. This routine is called from
2449        obcs_prescribe_read
2450      - updated obcs_check
2451      - changed sponge layer relaxation parameter units for days to seconds
2452      - turned off sponge layer by default
2453      - changed argument list of OBCS_CALC to myTime+deltaTclock
2454      - fixed about 35 bugs in obcs_external_fields_load
2455    
2456    checkpoint55c_post
2457    o obcs stuff
2458      - new runtime flags useOBCSprescribe, useOBCSbalance
2459      - re-arranged obcs_calc
2460      - moved exf_getobcs to obcs_prescibe_read
2461        obcs_prescibe_read is called after ORLANSKI stuff
2462        and independent of it (executable can contain all).
2463      - updated obcs_check
2464      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
2465        These may be necessary only if tangential velocities are
2466        prescribed at OB, not sure, needs testing.
2467    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
2468      which simplifies the calls and passes the ifc check-bounds test
2469    
2470    checkpoint55b_post
2471    o add a 2D scalar, Z location, exchange_2 routine.
2472    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
2473      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
2474      affects advect_cs results (for the wrong reason): update output.txt
2475    o use a more standard discretization for biharmonic viscosity ;
2476     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
2477      affects results of dome set-up: update output.txt
2478    o fix gad_advection.F (CubedSphere part), back to version 1.23
2479    o fix bug in mom_vi_del2uv.F (CubedSphere part).
2480    
2481    checkpoint55a_post
2482    o merged code to
2483      * prescribe/read time-dependent open boundaries
2484        (works in conjunction with exf, cal)
2485      * sponge layer code for open boundaries
2486      * each boundary N/S/E/W now has its own CPP option
2487        (healthy for the adjoint)
2488    
2489    checkpoint55
2490    o up-to-date adjoint of previous breaks
2491      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
2492      - global_ocean_ebm: adjoint still needs fix (TLM ok)
2493      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
2494      - carbon: * remove tr1-related adjoint verification
2495                * add ptracer as control variable
2496    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
2497      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
2498    
2499    checkpoint54f_post
2500    o in verification/carbin/ remove experiment related to
2501      ALLOW_PASSIVE_TRACER (array tr1 etc)
2502      code_ad/ input_ad/ results_ad
2503    
2504    o add two new packages
2505      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
2506        + subject to optimization (memory)
2507      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
2508        + subject to reordering (many GOTOs in the original code)
2509        + so far opps is called for every (i,j) point, and then operates in
2510          the vertical; one may want to reorder the scheme in order operate in
2511          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
2512          fields)
2513    o overhaul of IO so that we now have flags for MDSIO and/or MNC
2514      - all verification tests compile and run with linux_ia32_g77
2515      - defaults are compatible with current input files--nothing
2516        should change if you were not previously using MNC
2517      - MNC output has been added in numerous places (eg. timeave)
2518        but there are still a few writes not yet do-able with MNC
2519        (this is in progress)
2520      - flags now allow for either/or/both use of MDSIO and MNC and
2521        documentation will soon follow
2522      - numerous small formatting cleanups for ProTeX
2523    o add version info (via BUILD_INFO.h) to MNC and stdout
2524    
2525    checkpoint54e_post
2526    o add two new packages
2527      - pp81 (Packanowski and Philander, 1981), Richardson number and
2528        stratification dependent mixing
2529      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2530      - these scheme operate in a similar manner as KPP (without ghat, of
2531        course), however there is only one diffusivity that is used for both
2532        temperature and salinity (and passive tracers)
2533    o add offline package
2534    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2535      provided by Stephanie Dutkiewicz
2536    o genmake2: add ability to search for C compilers and cleanup test output
2537      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
2538    
2539    checkpoint54d_post
2540    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
2541    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
2542      leading to additional shift by 5 days each year of integration
2543       (i.e. leading to considerable offset over the years)
2544    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
2545    o start with no AB and no initial filtering (staggerTimeStep):
2546      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
2547    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
2548      (external loading & cpl import/export stay in forward_step.F)
2549    o update coupling interface to work with new staggerTimeStep
2550    o change MDSIO ptracers_pickup.
2551    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2552    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2553    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2554    
2555    checkpoint54c_post
2556    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2557      this affects (truncation error) output.txt of test-exp:
2558       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2559    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2560    o change Qnet to always be the net heat flux, (+upward).
2561      affects (truncation error) output of natl_box exp.: updated
2562    o define the max number of passive tracers in PTRACERS_SIZE.h
2563    o start to test mnc routinely in exp0
2564    o add sea-ice loading (sIceLoad) as a new forcing field.
2565    
2566    checkpoint54b_post
2567    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2568       impressive on Altix and Opteron systems)
2569    o diagnostics can now write NetCDF files through the mnc package
2570    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2571    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2572    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2573      affects (truncation error) output of lab_sea & natl_box exp.: updated
2574    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2575    
2576    checkpoint54a_post
2577    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2578    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2579    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2580    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2581      + internal_wave (shift in writing cg2d_ini_res)
2582    checkpoint54a_pre
2583    
2584    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2585      - modified verification/lab_sea and natl_box_adjoint accordingly
2586    
2587    checkpoint54
2588    checkpoint53g_post
2589    o prepare splitting of thermodynamics: store convect.counter in common block
2590    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2591      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2592    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2593    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2594    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2595    o restore adjointability
2596    
2597    checkpoint53f_post
2598    o modifications that affect AIM experiment results (update output.txt):
2599      - no advection of S at top interface Nr (pkg/generic_advdiff)
2600      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2601    o AIM pkg:
2602      - include stability function into surf.Flux derivative relative to Tsurf
2603      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2604    
2605    checkpoint53e_post
2606    o merged cylindrical coord configuration
2607    o added rotating_tank experiment
2608    checkpoint53e_pre
2609    
2610    checkpoint53d_post
2611    o faulks upgraded: re-generate output.txt that have changed:
2612       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2613    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2614    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2615    o added Sadourny discretization of Coriolis
2616      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2617      - re-enabled use of omega3 (useAbsVorticity)
2618    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2619      vector-invariant equations
2620      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2621    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2622      hopefully without new bugs
2623      - still to do: biharmonic friction for non-hydrostatic w
2624    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2625    o regenerated output for global_ocean_ebm (using -ieee)
2626    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2627      of mom_common/
2628      - simple re-arrangement of instructions within computing loop
2629    checkpoint53d_pre
2630    
2631    checkpoint53c_post
2632    o new version of coupler for AIM+thSIce and Ocean models
2633     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2634     - land: change Evaporation of snow
2635     - aim with thSIce: fix bug in snow-precip.
2636    o changes to calc_gw.F
2637     - bug fix for w^2 term near the bottom boundary
2638     - (hopefully) improve the lateral slip boundary condtions for use with
2639        partial/looped cells
2640      - because the bug fix changes two verification experiments anyway (exp5
2641        and plume on slope), change the lateral boundary condition from half slip
2642        to the value of no_slip_sides
2643    o ebm package wasnt quite up to the parallel task. Fixed that.
2644    o Adjoint of EBM package + verification
2645      * TLM OK
2646      * ADM not sufficient accuracy yet (needs further testing)
2647    
2648    checkpoint53b_post
2649    o Commiting new energy balance model to repository
2650      * package is pkg/ebm
2651      * verif. is verification/global_ocean_ebm
2652      * references are in ebm_driver.F
2653    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2654    C        Global thermohaline circulation. Part I:
2655    C        Sensitivity to atmospheric moisture transport.
2656    C        J. Climate 12(1), 71-82
2657    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2658    C        Global thermohaline circulation. Part II:
2659    C        Sensitivity with interactive transport.
2660    C        J. Climate 12(1), 83-91
2661    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2662    C        Destabilization of the thermohaline circulation
2663    C        by atmospheric eddy transports.
2664    C        J. Climate 7(12), 1870-1882
2665    o Will need long integration testing.
2666    checkpoint53b_pre
2667    
2668    o created pkg/mom_common in preparation for variable viscosity code
2669    o renamed and split ini_mnc_io
2670    o pkg/land: only liquid water can diffuse or run-off
2671    o AIM using land: soil wetness availability account for snow
2672    o added printMapIncludesZeros to EEPARMS namelist
2673    
2674    checkpoint53a_post
2675    o restore TAMC compatiility for exf_constants.h
2676      (no usage of _d in .h)
2677    o Additional storing in KPP in an attempt to fix
2678      TAMC problem with adjoint of KPP code.
2679      (no success...)
2680      Identical code works fine with TAF.
2681    o Fixed verification/natl_box_adjoint experiments.
2682      Initial conditions for Experiments 4 and 5 are now
2683      set to "SEAICE_initialHEFF=0", which is more reasonable,
2684      and hence gives results closer to that of Experiment 2.
2685      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2686    
2687    checkpoint53
2688    o stable checkpoint with up to date adjoint
2689      TLM tests only run for 1st grdchk at the moment. Its unclear if
2690      this is a code problem or a problem with resetting code for g_
2691      variables that is being autogenerated wrong.
2692      Otherwise:
2693       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2694       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2695         are both still in chaos following their security messes.
2696    
2697    checkpoint52n_post
2698    o various build (mostly genmake2) changes including:
2699      - ability to build/run more easily within Cygwin and MacOS X
2700      - more complicated Makefiles with a stronger dependence on Gnu Make
2701    o pkg/seaice modifications
2702      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2703        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2704        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2705      - changed proxy for geostrophic velocity and updated
2706        verification/lab_sea/results/* accordingly
2707      - removed ADI dynamic solver from pkg/seaice
2708      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2709        they caused a segmentation fault under certain circumstances
2710      - removed unused field WATR
2711    o bug fix in exf-package:
2712      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2713         now reflect that.
2714    o small fixes in the cal-package:
2715      - set reference date to first of January for the 'model'-calendar
2716      - failing of cal_CheckDate in cal_FullDate now actually results in a
2717        warning
2718    o small modifications in exf-package to increase flexibility:
2719      - change climtempfreeze from a constant to a runtime parameter that
2720        is specified in data.exf_clim (default = -1.9)
2721      - introduce runtime parameter windstressmax (default = 2.0) that is
2722        specified in data.exf
2723    o fix in pkg/thsice:
2724      - update Evap (Tsf changes) to be consistent with Latent heat flux
2725      - maintain snow precipitation unchanged (even if Tsf >=0).
2726     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2727    
2728    checkpoint52m_post
2729    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2730      this does not change any of the results, because myIter=0 in swfrac always
2731      lead to jwtype=2 (the default anyway), but the call makes little sense
2732      as a default
2733    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2734    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2735      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2736    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2737    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2738    o extending useSingleCpuIO option to work with new exch2 I/O format
2739      - old-style, missing-tile I/O is still accessible by defining CPP
2740        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2741    o monitor package can write to NetCDF files and/or STDOUT
2742    o fix re-definition bug in MNC_GRID_INIT_ALL()
2743    o doc/api_reference added
2744      - a framework for building an API Reference Manual using all
2745        the "protex" comments embedded in the code
2746      - see pkg/generic_advdiff, pkg/mnc for examples
2747    o MNC:
2748      - make myThid the last argument for all subroutines
2749      - new default for the grid files: NO halos
2750      - add useMNC and other run-time flags
2751      - separate per-file-group handling of the unlimited dimension
2752      - early initialization of MNC w/ flags read at the eeboot stage
2753        and lookup tables set in initialize_fixed
2754      - write all MNC output to a freshly-created directory
2755    o thermodynamics sea-ice (thsice) is now tested with testreport.
2756    o test exp. advect_cs: use the standard cs32 grid ; update output.
2757    o Added functionality to grdchk:
2758      pick global i,j,k position (or nearest wet) where to perform check.
2759    
2760    checkpoint52l_post
2761    o new land formulation:
2762      a) use ground enthalpy as prognostic variable to ensure exact
2763         energy conservation.
2764      b) account for water temperature and for latent heat of freezing
2765         in all processes (rain, run-off, ground storage)
2766      c) compute surface and ground temperature implicitly.
2767    o aim_v23 modification for new land model:
2768      a) Treat separately land / ocean / sea-ice surface fluxes
2769         to allow implicit computation of land & sea-ice surface temp.
2770      b) add snow precipitation.
2771    checkpoint52l_pre
2772    
2773    o fix problem (when 1 tile is empty) in min/max monitor.
2774    o fix bug in timeAve (u,vZetatave in common block)
2775    o no restoring terms under ice for pkg/seaice
2776    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2777    o bug fix for pkg/seaice pickups
2778    o change MNC call locations and add coordinate attributes
2779    o mask vorticity at the corner ; affects global_ocean.cs output
2780    o fix ini_curvilinear_grid ; test CS experiments with mpi
2781    o aim.5l_cs: modify sea-ice fraction input file ; update output
2782    o exf: Adding simple range check routine for exf fields after read
2783    
2784    checkpoint52k_post
2785    o removed top-level directory "diags"
2786      - we migrated these functions to pkg/timeave a long time ago
2787    o fixed bug introduced in pkg/monitor
2788    o accuracy ctrlprec = 32 insuffient for gradient checks using
2789      averaged fields (I/O via cost_averages)
2790      -> use ctrl.h in active_file*.F to control I/O precision.
2791    o paramter list of CALL ADTHE_MAIN_LOOP
2792    o added initial do_the_model_io to ecco
2793    o set all ...Freq to zero after cost_final
2794      taveFreq, dumpFreq, pChkptFreq
2795    o MAIN and ECCO differentiability restored
2796    
2797    checkpoint52j_post
2798    o fix nchklev in tamc.h for global_ocean...
2799    o Bringing flow and store directives up-to-date
2800    o Really weird thing!
2801      call do_the_model_io from the_main_loop with parameters
2802      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2803      TAF places a faulty re-call of initialise_varia
2804      after cost_final call which should not be there!
2805    checkpoint52j_pre
2806    
2807    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2808      error messages
2809    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2810    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2811      debug output
2812    o modfied mdsio_writefield.F to handle non-global files under exch2
2813    o update AIM Cubed-Sphere exp (aim.5l_cs):
2814      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2815    o update AIM Equatorial Channel exp:
2816      use standard aim_v23 pkg and change the SST fields to be more realistic.
2817    o globalFile now works with exch2
2818    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2819      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2820    o limit timeave output for hi-res integrations
2821    
2822    checkpoint52i_post
2823    o removed CPP_EEOPTIONS.h from verification/*/code
2824    o updated the tiling for global_ocean_pressure
2825    checkpoint52i_pre
2826    
2827    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2828      the old pkg/aim).
2829    
2830    checkpoint52h_pre
2831    o shortened offending lines in exch2_send_rx?.template
2832    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2833    o genmake2: add build & execute test for NetCDF code
2834    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2835      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2836    o added useSingleCPUIO flag to monitor.F and mon_out.F
2837    o added temporary hack for sea-ice dynamics on the cube:
2838      metric terms are ignored and it is assumed that
2839      there is no sea-ice on cube faces 1, 2, 4, and 5.
2840    
2841    checkpoint52f_post
2842    o added exch2 cube routines to pkg/exch2
2843    o modified hs94.cs-32x32x5 to use it
2844    o added new grid files to hs94.cs-32x32x5
2845    checkpoint52f_pre
2846    
2847    checkpoint52e_post
2848    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2849      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2850    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2851      to work with implicit vertical advection and AB ;
2852    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2853    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2854     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2855    checkpoint52e_pre
2856    
2857    o fix bug in impldiff when Nr=1 or Nr=2.
2858  o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt  o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2859  o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.  o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2860  o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2  o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2

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