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revision 1.268 by jmc, Fri Mar 12 20:57:21 2004 UTC revision 1.1108 by dfer, Wed May 27 03:12:04 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 Fix computations of L4rdt in mom_calc_visc.F
8    o eesupp:
9      new S/R ALL_PROC_DIE (like EEDIE, without irrelevant threads err msg):
10      should be called before a "stop" if we know that all process are going
11      to stop; if one Proc does call this S/R, will hang in MPI_FINALISE.
12    
13    checkpoint61o
14    o pkg/exch2: change check_depths to issue just a warning (instead of error+stop)
15    o model/src/ini_curvilinear_grid.F:
16       compute angleSin/CosC when they are not read from a file
17    o pkg/seaice:
18       add pseudo time stepping for LSOR
19    o pkg/exch2:
20       temporary fix for exch2_s3d_rx; update results of exp. hs94.cs-32x32x5.impIGW
21    o pkg/seaice:
22       Adding separate sea ice albedo, drag coefficients, and HO in Southern
23       Ocean from those in Arctic Ocean.  See *_south in SEAICE_PARAMS.h
24    o SingleCpuIO:
25       fix bug put before chkp61n (May 11), when more than 2 MPI cpu are used.
26    o pkg/seaice:
27       put exchanged variable in (local) common block for MPI+Multi-Threads
28       to work (necessary with exch1, and for now with exch2 too).
29    o verification: to get more experiments tested with mpi, mth and mpi+mth,
30      change tiling of:
31       aim.5l_Equatorial_Channel, aim.5l_LatLon, dome, exp4, global_ocean.90x40x15,
32       hs94.cs-32x32x5, MLAdjust, offline_exf_seaice & tutorial_plume_on_slope
33      update output of exp:
34       exp4, global_ocean.90x40x15(+.dwslp), MLAdjust(all 5),
35       tutorial_plume_on_slope and hs94.cs-32x32x5 (use default rotationPeriod)
36      + ideal_2D_ocean: use default rotation period + test Global_Sum_SINGLECPU
37                       (note: output.txt generated on faulks using only 1 tile)
38    o eesupp & mdsio (SingleCpuIO):
39     - remove MISSING_TILE_IO (from MDSIO_OPTIONS.h), replaced by run-time
40       parameter "W2_useE2ioLayOut" (read from file "data.exch2").
41       Note: was not effective for globalFile & useSingleCpuIO=F; now fixed.
42     - move MDSIO_SCPU.h (pkg/mdsio) to EEBUFF_SCPU.h (eesupp/inc).
43     - fix GLOBAL_SUM_SINGLECPU when using Exch2; re-use same buffers and same
44       gather/scatter S/R as with SingleCpuIO (=> 1 less 2D global RL array).
45    o pkg/exch2:
46     - new code to set-up W2-Exch2 topology (replace matlab-topology-generator):
47       read parameter file "data.exch2" if it exists; otherwise try default regular
48       cube without blank-tile; new header file "W2_EXCH2_SIZE.h";
49     - update matlab-topology-generator (exch2_setup_cs6_print.m) to be compatible
50       with new code (not to be used, just as a backup solution).
51     - add examples (e.g., for lat-lon-cap_120) of parameter file "data.exch2"
52       in utils/exch2/input.
53    
54    checkpoint61n
55    o eesupp & mdsio (SingleCpuIO):
56      - move mapping to global io-buffer inside gather_2d/scater_2d: this save
57        memory (1 less 2D global RL array); skip 1 buffer copy; and only send/
58        receive real*4 array (instead of real*8) to read/write 32.bit files.
59        (new template for gather_2d/scater_2d, new set of S/R MDS_PASS_R4,8toRL,S
60         and remove new mapping S/R)
61    o pkg/mdsio: in preparation for topology-generator within pkg/exch2:
62      - Change declaration of SingleCpuIO buffer, reduced to only 1 dim.:
63        xyBuffer_size, which is set to W2_ioBufferSize from W2_EXCH2_PARAMS.h
64        when using exch2. Add S/R to map global io-buffer to global model array.
65      - uses exch2_global_Nx,y instead of exch2_domain_nxt,nyt.
66    
67    checkpoint61m
68    o write_utils : change WRITE_1D_R8 to WRITE_1D_RL
69      and add 3 other S/R for other types (R4,R8,RS).
70      Change calls to WRITE_0D/1D_R[4,8,S,L] to match the type of argument.
71    o eesupp/inc/CPP_EEMACROS.h (EXCH & GLOBAL_SUM/MAX macros):
72     - ensure suffix (_R4,_R8,_RS,_RL) correspondance between macro and S/R ;
73     - reduce number of macro definitions (keep only those which are used);
74       can always call directly the corrresponding S/R if needed.
75     - everywhere in the code: change macros (EXCH & GLOBAL_SUM/MAX) suffix
76       _R4/_R8 to _RS/_RL when applied to _RS/_RL variable.
77     Fixed wrong type of arg in:
78       atm2d/put_ocnvars.F cheapaml/cheapaml.F ocn_compon_interf/ocn_apply_import.F
79       ctrl/ctrl_map_ini_ecco.F seaice/seaice_do_diags.F seaice/seaice_model.F
80     To fix: global_sum of var in common block is wrong (multi-threaded) in:
81       dic/dic_atmos.F ebm/ebm_area_t.F ebm/ebm_zonalmean.F sbo/sbo_calc.F
82     To fix: aim_v23/aim_do_co2.F (BARRIER & GLOBAL_SUM within bi,bj loops)
83    o adjustment.cs-32x32x1: test "blank tiles" when compiling with mpi; 2nd
84      "nlfs" mpi test is going to stop when checking for unconnected tile egdes.
85    o eesupp/src: new S/R to stop everyone when 1 (or more) Proc. find an error
86    o pkg/exch2: new S/R EXCH2_CHECK_DEPTHS to check that unconnected tile
87      edges are closed (zero depth); might happen with "blank tiles";
88      for now, disabled if using OBCS.
89    o tools/gemake2: delete modifs from March 27-29 2009 (with option "-mpi":
90      link *_mpi files from "MODS" dir) to return to a strait-forward behavior.
91    o move read_write.F to write_utils.F ; new parameter (maxLengthPrt1D)
92      to reduce length of 1.D array print in STDOUT.
93    o adjustment.cs-32x32x1: changed to oceanic test with 1 continent
94      + use 48 tiles (16x8): this will allow to test "blank tiles".
95    o start to test MPI + multi-threaded (change testreport to skip tests
96      where number of tiles do not match).
97    o genmake2: add option "-omp" to turn on Open-MP ;
98      passed to testreport (if using -mth) ; merge few (*+mth) optfiles.
99    o pkg/exch2 (+ utils/exch2): ignore blank tiles (instead of removing them)
100      and keep the original tile numbering. Note: compatible with old
101      W2_EXCH2_TOPOLOGY.h & w2_e2setup.F topology files.
102    
103    checkpoint61l
104    o Overlaps had been forgotten in calculating ijk keys : fixed
105    o fix cyrus makedepend for gcc 4.4
106    o experiment fizhi-cs-aqualev20:
107      switching to new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE)
108      and generate new output. Note: new output is much closer to the old
109      one (v1.8) generated with pgf77 -O2 on Mar 14 2007 than it is from
110      the previous one (v1.9) generated with pgf77 -O0 on Jun 13 2007.
111    o pkg/fizhi:
112     - change to avoid indices going deliberately over array-bounds
113     - remove unnecessary MPI stuff
114     - perpetual spring equinox with "#define FIZHI_USE_FIXED_DAY"
115     - new version of S/R GETPWHERE available with #define TRY_NEW_GETPWHERE:
116       does not go over array-bounds and therefore returns reliable output.
117     - in fizhi_driver.F & fizhi_turb.F, fix "get_alarm" calls:
118       this S/R has 4 output arguments, which are used inside "get_alarm";
119       when it is called with the same variable "ndum" in place of several
120       output arguments, this produces weird side effect inside "get_alarm"
121      (e.g., datein=dates(n) is overwritten by timein=times(n) since both
122       datein & timein, resp. 2nd and 3rd arg., are pointed to the same "ndum"
123       address) and produces error.
124    o tools/gemake2: (March 27-29 2009)
125      with option "-mpi": link *_mpi files from "MODS" dir (this is what
126      testreport does).
127    o lab_sea experiment: change from 2x1 tiles to 2x2 tiles and regenerate output
128    o pkg/seaice: fix bug in new version of S/R SEAICE_LSR.F:
129       update lab_sea.lsr & lab_sea.salt_plume results
130    o pkg/seaice:
131      Major overhaul of the LSOR solver: change discretization from original
132      finite differences to finite volume. The old routine is still in the
133      file seaice_lsr.F and can be turned on with the CPP-flag
134      SEAICE_OLD_AND_BAD_DISCRETIZATION
135      Along with this change, the discretization of the strain rates is changed.
136      The same flag turns on the old discretization in seaice_calc_strainrates.F
137      All verification experiments with seaice are affected (except for
138      seaice_exf_offline); global_ocean.cs32x15/input.icedyn recovers the old
139      results by setting the above flag.
140      Further changes involve changes in defaults:
141      - ALLOW_FLOODING is defined and turned on by default
142      - SEAICEadvSnow = .true. is now the default
143      - SEAICEadvSalt = .true. is now the default
144      - SEAICEadvAge  = .true. is now the default
145      - SEAICE_clipVelocities  = .false. is now the default
146                                         (as per J. Zhang's recommendation)
147      - B-grid, and thus not tested: SEAICE_TEST_ICE_STRESS_1/EXPLICIT_SSH_SLOPE
148        is defined, SEAICE_TEST_ICE_STRESS_1 is renamed into SEAICE_BICE_STRESS
149      - seaice_growth: replace computation of UG by a simple copy from wspeed
150    
151    checkpoint61k
152    o pkg/seaice: a few bug fixes mostly concerning the metric terms:
153      seaice_lsr: fixed a few metric terms,
154                  affects lab_sea.lsr, lab_sea.salt_plume, seaice_obcs
155                  add more debugging diagnostics
156      seaice_evp: removed superfluous many metric terms of FV discretization
157                  of stress divergence
158                  affects lab_sea, lab_sea.hb87
159      seaice_ocean_stress: removed superfluous many metric terms of FV discretization
160                  of stress divergence for non-evp solver
161                  (this part is not tested anywhere)
162      seaice_calc_strainrates: fixed a bug in no-slip boundary conditions,
163                  they were effectively only half slip
164                  affects lab_sea.hb87
165      updated all relevant verification experiments (except lab_sea//output_adm.txt
166        which was left over, but fails at level 7 & 6)
167    
168    checkpoint61j
169    o pkg/seaice: turn a few hard wired parameters into run time parameters
170    o pkg/seaice/exf/monitor: turn netcdf coordinate variable T into model
171      time in seconds as promised by the usints in seaice_monitor and exf_monitor
172    o pkg/mnc: fix the coordinate variables for multi-tile curvi-linear grids
173      that are not cubed-sphere grids
174    o pkg/seaice: fix a bug for the rare case of SEAICE_VECTORIZE_LSR
175    o pkg/ctrl:
176      fix bug in ctrl_depth_ini.F (EXCH_XYZ was applied to 2-D field xx_r_low)
177    o non-hydrostatic (calc_gw.F):
178      fix viscA4 on CS-grid + fix diagnostics: Wm_Diss & Wm_Advec
179      update output of exp. global_ocean.cs32x15.viscA4
180    o remove backward compatibility for thetaMin,phiMin
181      (replaced by xgOrigin,ygOrigin on Jan 27, 2009)
182    o pkg/exf: fix a serious bug in exf_set_uv.F: do a rotation of the
183      interpolated wind field not only for curvilineargrid=.true., but also
184      for a rotated grid (rotateGrid=.true.)
185    o pkg/exf: add capability to bypass interpolation for runoff
186      by setting yet another CPP-flag
187    o eesupp/src, B-grid exchange:
188      add simple (6 tiles, non MPI) CS exch + standard interface S/R.
189    o autodiff
190      new CPP option ALLOW_TAMC_SINGLEPREC_COMLEV
191      allows to switch to single-prec common blocks;
192      corresponding switch occurs in tamc.h, integer isbyte
193      TAF store directivs "byte" and "kind" seem equivalent;
194      Most tamc.h have been updated correspondingly.
195    
196    checkpoint61i
197    o autodiff:
198      fix autodiff_sore/_restore indices for obcs
199      (spotted by I. Hoteit, M. Mazloff)
200    o pkg/autodiff, pkg/ctrl:
201      Add flag to reduce all tapelev I/O to single-prec.
202      In data.ctrl set
203        doSinglePrecTapelev = .TRUE.
204    o model/src/ini_curvilinear_grid.F, new grid-file format without EXCH2:
205      check in hack for SX8 compiler (for dxV, dyU); remove it afterwards.
206    o pkg/shelfice: fix bug with SHELFICEconserve flag, prepare for
207      real fresh water flux (not yet)
208    o pkg/mdsio & rw:
209     - add argument & option to S/R MDS_WRITEVEC_LOC (avoid Open/Close & write-meta)
210     - add simple interface S/R to MDS_WRITEVEC_LOC in pkg/rw: WRITE_GLVEC_RX.
211    o pkg/flt:
212     - replace FLT_INIT by 3-steps standard initialization S/R: readparms,
213       init_fixed & ini_varia.
214     - clean-up & simplify linear interpolation S/R:
215       move flt_bilinear.F -> flt_interp_linear.F ; add arg. myThid.
216     - fix some indices (mainly vertical index) ; add IMPLICIT NONE.
217     - more efficient I/O, using new options of MDS_WRITEVEC_LOC S/R.
218     - add vert. coordinate & horiz. indices to output files.
219     - change vertical position in initial condition, from index to depth [m].
220     - store horizontal (decimal) indices i,j in common block (instead of coord. x,y)
221       (easier to get to a curvilinear grid) ; delX,delY no longer used.
222    o pkg/ggl90: a few modifications:
223     - fix bottom boundary condition, and interpolation of KappaE
224       near top and bottom
225     - use same set of viscosity/diffusivity for TKE/momnetum/tracer
226     - add smoothing option as in Blanke and Delecluse (1993) (--> ALLOW_GGL90_SMOOTH)
227     - add a few options for mixing-length upper limit (--> mxlMaxFlag)  
228    o rename thetaMin,phiMin -> xgOrigin,ygOrigin
229      (maintain temporary backward compatibility, until next checkpoint)
230    
231    checkpoint61h
232    o pkg/diagnostics with "periodic averaging diagnostics":
233      fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
234    o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
235    o pkg/obcs: fix loop ranges for balancing code
236    o pkg/flt:
237     - improve criteria for finding which tile owns a float.
238     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
239    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
240      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
241      with ocean biogeo)
242    o pkg/flt:
243     - do some cleaning and fix the restart ;
244     - add output.txt in flt_example/results to get this pkg tested.
245    o genmake2: add an EXTENDED_SRC option and flag.
246       for now, cannot be turned on on command line (only through genmake_local)
247    o pkg/mdsio: read/write vector:
248     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
249     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
250       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
251     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
252      (drop to 4 digits matching for grad). But this test does not look very
253      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
254    
255    checkpoint61g
256    o pkg/flt:
257      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
258       + make OPTIONS file more standard.
259      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
260      - fix _BYTESWAPIO CPP-Flag
261      - standard reading of file-parameter "data.flt"
262      - fix argument list of S/R FLT_RESTART
263      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
264    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
265    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
266      a still unfixed compiler/optimization bug
267    
268    checkpoint61f
269    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
270      update results of global_ocean.cs32x15.icedyn test.
271    o move getcon.F from model/src to pkg/fizhi.
272    o pkg/exf: add parameter for extrapolation of temp up to the surface
273       and option to prevent negative evap (in bulk_largeyeager04 only).
274    o Prather Advection scheme: fix tracer conservation for divergent flow
275      (e.g., when using NonLin Free-Surface).
276    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
277    o gmredi (Visbeck-variable-K):
278     - add more parameters to Visbeck-variable-K.
279     - use a 5 points average for dSigmaR in Visbeck-K calculation
280       (more "homogenous": same stencil and same weights as in dSigmaH)
281     - update output of ideal_2D_oce experiment.
282    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
283      (#undef REAL4_IS_SLOW)
284     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
285       coordinate variable
286     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
287       (surface forcing fields), removes some of the functionality
288     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
289     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
290       probably not all: copy _RS surface flux fields to RL field before
291       calling DIAGNOSTICS_FILL
292     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
293       real*4 (CALL EXCH_*_RS) versions.
294     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
295       (generate new output).
296    
297    checkpoint61e
298    o gmredi (Visbeck-variable-K):
299      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
300      - change computation of Visbeck-K where Slope > Smax :        
301        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
302        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
303    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
304      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
305    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
306    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
307      does not become too large (to avoid precision problems in implicit-diffusion
308      solver); update ideal_2D_oce output.
309    o pkg ggl90:
310      - in ggl90_cal.F: compute only one set of visc/diff, used to
311        step forward TKE/T/S/momentum
312      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
313        have Prandlt =1)
314    o gmredi (fm07):
315      - add lower limit on Transition layer thickness + lower limit on 1/lambda
316      - allow to set few more params from data.gmredi
317    o pkg ggl90:
318          - add missing sqrt(2) factor in computation of mixing length
319            scale in ggl90_calc.F
320            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
321    
322    checkpoint61d
323    o adjoint modifs
324      - adapt to new field rhoInSitu
325      - allow to revert from StoreDynVars2D, StoreDynVars3D
326        to individual fields
327        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
328    o store 3-D (in-situ) density in commom block (DYNVARS.h)
329     - save 1 rho computation.
330     - no longer modify T & S inland when using down_slope pkg.
331    o gad_som : allow to switch to SOM advection for T & S without corresponding
332      pickup files (using new S/R: MDS_CHECK4FILE).
333    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
334      (for useSingleCpuIO to work in multi-threaded)
335    o pkg/shelfice:
336     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
337       with SHELFICEtopoFile in data.shelfice
338     - move code for reading ice shelf topography and modifying hFacC into separate
339       subroutines of the shelfice package
340     - separate initialisation of "fixed" and "variable" variables
341     - kTopC is not (yet) replaced by kSurfC, although this is possible
342    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
343    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
344      and rename:
345      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
346      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
347    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
348    
349    checkpoint61c
350    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
351      to add mass source/sink of fluid in the interior (3-D generalisation
352      of oceanic real-fresh water flux).
353    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
354    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
355    o new pkg: down_slope
356      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
357      - presently, modify T & S inland (dwnslp_calc_rho.F).
358        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
359      - implementation for ocean in P-coords not tested.
360      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
361    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
362      (to facilitate conversion of oceanic pkg to p-coordinate).
363    o change FIND_RHO to FIND_RHO_2D :
364      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
365    o new pkg: cheapaml
366    
367    checkpoint61b
368    o exch2:
369      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
370      - no longer depend on the order sequence (N,S,E,W).
371      - 3rd exchange no longer needed (tested with 24 tiles).
372      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
373      - exch_UV_A-grid readily available (but not yet tested).
374      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
375      (both are no longer needed) in exch_uv: no effect in forward run; but
376       get truncation error differences with adjoint exch.
377    o exch2:
378     - change index-bounds storage (moved from target to local tile,
379       more intuitive this way) ; rename/remove some variables.
380     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
381    
382    checkpoint61a
383    o exch2/matlab-topology-generator:
384      fix bug in index bounds for N-S internal exchange (hard to tell if this
385      had any effect on the solution).
386    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
387      is exceeded
388    o testreport: modify syntax of awk, so that it works also with
389      awk, and not only with nawk and gawk
390    
391    checkpoint61
392    o autodiff
393      Change default for TAF usage by removing argument '-nonew_arg'
394      This changes TAF subroutine argument list (ordering of active var.)
395      Omission of this flag leads to incompatibility w.r.t. TAMC
396      To restore TAMC-compatibility, need following modifs:
397      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
398      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
399      Tested TAF version is 1.9.22
400      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
401    
402    checkpoint60
403    --->>> This is the last checkpoint for which generating the adjoint
404    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
405    --->>> by default.
406    --->>> Future checkpoints will ommit this flag by default.
407    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
408    o pkg/grdchk: Add gradient check to etan0 perturbations.
409    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
410    o pkg/autodiff: more flexibility in zeroadj.
411      model/src: modifying do_oceanic_phys.F accordingly.
412    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
413    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
414      special setup of gmredi for which the adjoint is stable
415      enough for parameter optimization.
416    o bridging the gap between eddy stress and GM.
417      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
418          along with a change in CPP option (now ALLOW_EDDYPSI).
419      -> when using GM w/ GM_AdvForm:
420          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
421          is applied either in the tracer Eq. or in momentum Eq.
422          depending on data.gmredi (intro. GM_InMomAsStress).
423      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
424      The key modifications are in model/src/taueddy_external_forcing.F
425      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
426    
427    checkpoint59r
428    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
429      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
430      fix option to read coriolis(@ cell-corner) from files with CS-grid.
431    o pkg/mnc: add some attributes to standard 1D-coordinate variables
432    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
433      mass points, when using mnc for output
434      - add runtime parameter (missing_value, missing_value_int) to override
435        default (which is the value of getcon('UNDEF'))
436    o pkg/mnc: prepare mnc for the actual use of missing values with the
437      diagnostics package: small fix in mnc_cw_readwrite.template and more
438      initialisation of never used fields
439      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
440      versions
441    o pkg/thsice/thsice_ini_vars.F added default initial values so that
442      thermodynamics sea ice solver does not blow up when some initial fields
443      are missing.
444    o move from external_forcing_surf.F to ini_forcing.F
445      the p-coord. hack consisting in using pLoad to set phi0surf ;
446      update output of tutorial_global_oce_in_p (affected @ truncation level).
447    o Freshen up a bit hs94.1x64x5, notably:
448      remove rotationPeriod and tRef=5*0. (adjoint only), and add
449      exactConserv=.TRUE.
450    o pkg/generic_advdiff:
451      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
452      applies to files where Temperature & Salinity 2nd Order moments are used.
453    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
454      this uses a dynamically allocated internal state data structure
455      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
456      and requires a fortran 90 compiler
457    
458    checkpoint59q
459    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
460       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
461    o Refresh tutorial_global_oce_biogeo, notably:
462      - change bathymetry (put back seamounts in ACC, use hFacs)
463      - change EOS (POLY3 --> JMD95Z)
464      - use Bryan-Lewis vertical diffusivity
465      - use multidimensional advection
466      - remove old virtual virtual in dic pkg, now done through ptracer pkg
467      - change a couple of parameters in dic pkg
468    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
469    o pkg/obcs: change default to OBCSfixTopo = .true.,
470      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
471      - replace "debugMode" with "debugLevel .GE. debLevB"
472    o implementation of TAF directives for gchem,cfc,dic
473    o remove "exp5" (replaced by tutorial_deep_convection).
474    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
475      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
476      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
477      --> changes results in exp4, seaice_obcs
478    o tutorial_deep_convection :
479      update the set-up and increase resolution and domain size ; start
480      from pseudo initial conditions = output at t=120mn in order to see
481      something happening when running testreport.
482    o pkg/seaice: add os7mp as an advection scheme
483                  add check for advection schemes
484                  add a flag for restoring T and S underneath sea ice
485    o pkg/my82: add netcdf-support and diagnostics
486    o thsice pkg:
487      - Now hsMax limits snow height by turning it into ice following
488        flooding scheme (and now conserving energy)
489      - Slight rewriting of the formula in thsice_calc_thick.F
490      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
491      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
492    
493    checkpoint59p
494    o gchem / dic / cfc :
495      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
496      - add new parameter files: "data.dic" & "data.cfc" ;
497      - various re-arrangement in initialisation & header file ;
498      - fix tutorial_global_oce_biogeo for multi-threaded test.
499    o pkg/dic: test for "pickup_dic" file when restarting ;
500      if no pickup-file, can restart with a re-initialised pH (same as it did
501      before) providing pickupStrictlyMatch is set to False.
502    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
503      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
504    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
505      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
506    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
507     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
508       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
509    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
510       scheme to use for vorticty-term ;
511     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
512       (with default selectVortScheme, return to original discretisation)
513     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
514    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
515    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
516      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
517      also fix diagnostics VISCAHW & VISCA4W.
518    
519    checkpoint59o
520    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
521    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
522      move a few statemens out the main loop into separate loops
523    o pkg/shelfice:
524      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
525        (kg/m^2/s), does not break tests, because in verification/isomip,
526        rhoConstFresh=rhoConst (by accident)
527      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
528      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
529        new file model/src/seawater.F, so that they are available for all pkgs.
530      - convert potential temperature into in-situ temperature. This changes the
531        isomip tests => update tests
532    o add a flag writePickupAtEnd (default=true) to be able to suppress
533      writing a pickup at the last timestep
534    o tools/mpack-1.6 :
535      - disable automake (not working) and autoconf (not needed).
536      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
537        also cleaner with much less compilation warnings.
538    o pkg/profiles:
539      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
540      (for "less than 32 characters name" compiler requirement)
541    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
542      conditions that have a different sampling frequency than S/T/U/V obcs
543    o pkg/diagnostics (stats-diags):
544      - fix global Min/Max in case 1 processor get only empty tiles
545    o genmake2: replace (4 times)
546         make genmake_tc_1.o >> genmake_warnings 2>&1
547      with
548         COMM="$CC $CFLAGS -c genmake_tc_1.c"
549         echo $COMM >> genmake_warnings
550         $COMM >> genmake_warnings 2>&1
551      to make genmake2 always see the value of CC as specified in the optfile.
552    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
553      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
554      - modify verification advect_cs test to test SOM-advection on CS-grid.
555    o pkg/ctrl:
556      - Rewrite of ctrl_map_ini_ecco.F,
557        introducing a generic routine (ctrl_map_ini_gen.F).
558      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
559    
560    checkpoint59n
561    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
562      number in dedicate array "hdiag":
563      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
564        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
565      - many small changes (integer format) for large number of diagnostics
566      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
567        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
568    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
569      usingSphericalGrid, this allows to define the rotated grid coordinates
570      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
571      geographical coordinates according to the inverse of the rotation defined
572      by the Euler angles, so that Coriolis parameter and online-interpolation by
573      exf works with the geographical coordinates on XC/YC/XG/YG.
574      Naturally, this feature does not work with all packages, so some
575      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
576      profiles), because there the coordinates are assumed to be regular
577      spherical grid coordinates.
578    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
579      - introduce isopycnal diffusion coefficient control.
580    o tools/adjoint_options:
581      - additional control vector components.
582    o pkg/mnc: have mnc create marginally meaning full coordinate variables
583      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
584    o pkg/mypackage:
585      - add example of read/write pickup for state-var ;
586      - add entry points to the main code for state-vars diags & write-pickup.
587    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
588      transitions for useExfYearlyFields
589      - add new subroutine that determines the file to read from for
590        use*YearlyFields = .TRUE. and .FALSE.
591      - add a verification experiment to global_with_exf that tests
592        useExfYearlyFields with USE_EXF_INTERPOLATION defined
593    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
594      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
595      subroutines (which could be generated from a template, because they are
596      almost identical), for now they are included in obcs_prescribe_read.F for
597      simplicity
598    o pkg/exf:
599      - add a little more diagnostic to exf_interp_read (in analogy to
600        mds_read_field, can be turned off with debugLevel < debugLevA=1)
601      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
602        ugly but fast by unrolling short inner loops, inserting a unroll=8
603        directive in routine lagran, and splitting a loop and making do while the
604        outermost loop (the latter requires the intoduction of index arrays)
605    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
606    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
607      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
608    o verification/seaice_obcs: updated for restart test and latest options
609    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
610      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
611      for now this is only available for the C-grid code and also within
612      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
613    
614    checkpoint59m
615    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
616      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
617    o gad_som : fix flux output (& diagnostics) to have same units as other  
618      advection scheme fluxes (was previously multiplied by deltaT).  
619    o added verification/seaice_obcs both to test seaice open boundaries
620      and to provide an example matlab scrpt for generating them
621    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
622    o pkg/salt_plume: clean up salt_plume_frac.F to
623      remove redundancy in PlumeMethod 1 and 4
624    o pkg/kpp: added saltplume diagnostics
625    o pkg/obcs and pkg/seaice:
626      - do not set uice and vice to zero when OB*icefile are unspecified
627      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
628      - moved seaice tracer obcs after call to seaice_growth
629    o pkg/salt_plume: added various options for salt plume depth
630      criterion and for vertical distribution of the salt
631    
632    checkpoint59l
633    o pkg/ptracers: new version of ptracers pickup:
634      read meta file and write only fields which are needed to restart.
635      ( same logic as main pickup file ; also using pickupStrictlyMatch )
636    o pkg/seaice:
637      - add timescale for melting due to warm mixed layer as a means of
638        setting SEAICE_availHeatFrac more conveniently
639      - add a CPP-flag/runtime parameter check for flooding algorithm
640      - reformulated availHeat in seaice_growth.F to be independent of AREA
641    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
642      unit changes
643    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
644    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
645      SX vector computer.
646    o pkg/seaice:
647      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
648        seaice forcing fields can now be read only through pkg/exf
649      - removed some unused halos
650    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
651    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
652      or U/VICE from U/VWIND before computing U/VSTRESS
653    
654    checkpoint59k
655    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
656      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
657    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
658      all experiments pass when compile with un-initialised var. checking option.
659    o added pkg/salt_plume
660    o script to test restart (for now, in MITgcm_contrib/jmc_script)
661    o pkg/seaice: new read/write pickup version.
662      read meta file and write only fields which are needed to restart.
663      ( same logic as main pickup file ; also using pickupStrictlyMatch )
664    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
665    o lab_sea.hb87: modify the domain & update output.hb87.txt :
666      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
667      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
668      process. Fixed here by closing the domain at the Northern boundary.
669    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
670    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
671      a set of consecutive levels in/from a 3-D array.
672    o pkg/ptracers:
673      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
674      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
675    
676    checkpoint59j
677    o in pkgs: dic, obcs, offline, rbcs:
678      standard way to compute coeff. for time interpolation between 2 time reccords
679      which retains full precision (& make results less dependent on compiler).
680      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
681    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
682      packages instead of reading ice cover and wind speed separately
683    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
684     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
685      to allow to compile customized code before the update)
686    o cleaning-up:
687      - fix CPP instruction syntax in pkg/obcs
688      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
689        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
690      - fix some threads issue in IO parts.
691    o pkg/dic:
692      - add tons of "_d 0" (--> much better testreports !)
693       and then update outputs of tutorial_global_oce_biogeo
694    o pkg/mom_fluxform:
695      add a special version of momentum advection intended to conserve momentum
696      next to a bathymetry step or a coastline edge. (default = off = #undef)
697    o new read/write pickup version:
698      - for now, only implemented for main (mdsio) pickup file.
699      - write out only what is needed to restart; merge pickup_nh , pickup_ph
700        and main pickup together.
701      - read meta file; read only what is needed to restart; stop if a field
702        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
703        if it make sense (even if the restart is not perfect).
704      - if no meta file, assume that pickup to read corresponds exactly to
705        a pickup that would currently be written.
706      - read pickup written in the old format (until checkpoint59i) if it
707        recognizes an old meta file (no field-list).
708      - add a meta file in exp. which starts from a pickup: 2 cases:
709        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
710         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
711        b) a meta file describing the content of the associated pickup file
712         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
713    o pkg/mdsio & pkg/rw:
714      - new routine to read a meta file ; new set of routine to read
715        Multiple-fields file (with meta file).
716    o added open boundary conditions capability for seaice
717        HSNOW, HSALT, UICE, and VICE
718    
719    checkpoint59i
720    o adjoint:
721      * fix multiDimAdvection adjoint
722        (partial recomputation problem by TAF for fVerT(:,:,kDown)
723        and comlev1 size definition (maxpass vs. max. number of tracers)
724      * verification/global_ocean.90x45x15 adjoint now tests
725        NLFS and multiDimAdvection using DST3 (=30)
726      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
727    o pkg/kpp: add "_d 0" to real constant (if missing);
728      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
729      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
730    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
731      for internal parameters related to restart process (formerly from PARAMS.h)
732      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
733    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
734      as argument. (only atm2d & obcs write_pickup have not yet been updated)
735    o pkg/monitor:
736      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
737      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
738      - account for deep Atmosphere factor and density factor (anelastic)
739    o added open boundary conditions capability for seaice HEFF and AREA
740    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
741      thermodynamics
742      - requires a little reorganization, which affects the testreport results
743        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
744        so that now the conservative form is tested
745      - add a few comments
746    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
747    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
748    o add new diagnostics to seaice: advective, diffusive fluxes (only for
749      multidim-advection, for scheme 2 they are not filled) and transports,
750      thermodynamic growth rates
751    o change units of EmPmR (inside the code, + within coupling interface)
752      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
753      Affects results @ truncation level (cg2d match) and update output of
754       experiments: lab_sea(6), global_ocean.90x40x15(10),
755      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
756      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
757      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
758      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
759    
760    checkpoint59h
761    o pkg/exf:
762      - improve vectorization by moving if-statement out of loops in
763        exf_mapfields, exf_radiation
764      - exf_bulkformulae.F: introduce 2D fields and vectorize code
765    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
766    o testreport:
767      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
768        monitor & update offline_exf_seaice exp. output.
769      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
770    o pkg/seaice:
771      - bug fix in the evp solver: boundary conditions were affected be
772        masking of zMax/zMin (changes results)
773      - minor bug fix in boundary conditions in seaice_calc_strainrates
774        (changes results for no_slip)
775      - seaice_lsr.F: make interpolation of eta dependent on boundaries
776      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
777      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
778        stress formulation and no-slip boundary conditions
779    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
780      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
781    o pkg/seaice: a first HSALT time stepping equation has been checked in
782    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
783      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
784      without requiring DO-IF statements
785    o pkg/thsice:
786      use continuous power-law function for partition of energy between lateral
787      melting/freezing and thinning/thickening ; old code using step function
788      still available with #undef THSICE_FRACEN_POWERLAW
789      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
790    o testreport: change AD testing : check against results/output_adm.txt
791      using same scripts as for forward test.
792    
793    checkpoint59g
794    o adjoint testing: in preparation for changing testreport:
795      - output format: cost and grad written on separated lines
796      - ad output results in directory "results" (instead of "results_ad")
797    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
798    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
799    o pkg/ecco: allow user defined cost function contributions
800    o testreport:
801      Allow to choose (per experiment) the list of tested output variables
802       and the main variable (used to issue a pass/FAIL ) ;
803      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
804      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
805      Also modify printing of summary:
806       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
807       b) echo the list of tested variables in the individual summary.txt of
808          each experiment.
809    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
810      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
811      (but still depend on the tile decompostion of the domain).
812    o pkg/seaice: change a discretization detail to make the B-grid code
813      "more symmetric". This change is likely to remove all "ridges/leads" that
814      where quasi-aligned with the grid in B-grid solutions. It may also be
815      the solution to the stress coupling issues with the B-grid.
816    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
817      remove .cvsignore from input dir. (since testreport no longer run here).
818    o pkg/thsice:
819     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
820     - fix reshaping of sea-ice just after advection:
821       melt all the ice only if ice-volume is too small.
822     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
823       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
824     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
825    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
826      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
827    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
828      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
829      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
830      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
831      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
832      -> update output.txt
833    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
834     this affects truncation error: -> update output.txt of exp:
835      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
836      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
837    
838    checkpoint59f
839    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
840    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
841      a bounded range (in forward mode)
842    o pkg/ecco, ctrl, autodiff and mom_common:
843     internal parameter controls, completements of implementations
844    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
845    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
846      (not seem any difference in testing results).
847    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
848       at face corners.
849    o pkg/generic_advdiff:
850     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
851      loop range indices for computing vertical advection tendency
852      and do the calculation in the interior only (no overlap) ;
853      for now, only implemented for SOM advection (to save CPU time).
854     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
855    o exch2 adjoint
856      First set of changes:
857      - add exch2 hand-written adjoint templates
858      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
859        This will require cleanup in pkg/autodiff/*.F
860        (changed routines currently kept separate in verif. code/)
861      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
862        that used to hide exch2 or cubed-sphere specific code
863        (commented via 'cph-exch2')
864    o pkg/seaice
865      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
866    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
867       output of global_ocean.cs32x15.thsice .
868    
869    checkpoint59e
870    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
871      for B-grid vector (not yet tested) and C-grid vector (<- only used
872      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
873    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
874      (#ifdef ALLOW_SALT_PLUME)
875    o gather_2d/scatter_2d: removed halo regions
876    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
877      scheme and the corresponding test case (under front_relax dir). For now,
878      only available with Skew-flux form and not yet tested in realistic set-up.
879      adjoint: store directives updated, but gradient checks deteriorated,
880      so maybe GM/Redi adjoint is now broken.
881    o seaice adjoint
882      * add AREA, HEFF, HSNOW as control variable
883        (should not change lab_sea results)
884      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
885    o pkg/seaice:
886      * added computation of saltFlux in seaice_growth;
887        For time being, sea ice salinity is assumed constant
888        contribution of snow flooding to freshening of sea ice is neglected.
889        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
890        defaults to 0.0 in order to maintain backward compatibility.
891        Typical values for SEAICE_salinity are 4 to 10 g/kg.
892      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
893      * added SEAICE_availHeatFrac, which specifies fraction of surface level
894        heat content used to melt or grow ice
895      * commented out cap of HICE: it helps keep ice thinner
896      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
897      * applied OBCS T/S mask to HEFFM sea ice mask
898    
899    checkpoint59d
900    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
901     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
902     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
903    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
904     and change default value of parameter "GM_Small_Number";
905     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
906       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
907       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
908    o pkg/ecco: cost function when applying pkg/smooth to controls
909    o pkg/ctrl: add forcingPrecond run time parameter
910    o pkg/seaice:
911     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
912     - fix bug in metric terms of u-equation in LSR solver (implicit part),
913       changes verification/lab_sea
914     - rearrange implicit part of u-equation in LSR solver to make it easier to
915       read, understand, and debug. This causes changes at the truncation level.
916     - fix (serious) bug in the boundary conditions (sign error in the implicit
917       part) of the LSR solver. Changes all LSR results.
918     - fixed problem with HSNOW initialization to avoid thick snow when AREA
919       is initilized with small values - does not change lab_sea results.
920     - added HsnowFile initialization capability
921    o pkg/smooth: addition to model/src and pkg/ctrl so allow
922     initialization of pkg/smooth and application to control vector
923    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
924    o dependencies: pkg/profiles requires pkg/cal
925    o pkg/profiles:
926     - added option ALLOW_PROFILES_GENERICGRID
927         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
928         that interpolation information (grid points and coefficients) is provided
929         within the netcdf input files.
930         -> sample matlab scripts can be found in MITgcm_contrib/gael
931         that allow you to prepare netcdf input files.
932     - also modified: cleaner include statements, cleaner error print statements,
933       cleaner stops when error, and more tests of the netcdf input files consistency.
934    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
935    o pkg/seaice:
936     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
937       requires a new routine: seaice_diagnostics_fill.F
938     - make sure that seaice does not move if not forced (pressure replacement
939       method, Hibler and Ip, 1995), changes results
940     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
941     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
942       It is turned off by default (=-1.), because it changes the results.
943     - make it possible to read AREA from a file, too.
944    
945    checkpoint59c
946    o add S/R and diagnostics for oceanic mixed-layer depth
947    o move GMRedi call after all vertical mixing schemes (including KPP)
948    o pkg/thsice:
949     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
950      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
951    o pkg/obcs:
952     - bug fix for balance code
953    o pkg/seaice:
954      - allow values of SEAICE_elasticParm > 1
955      - add new parameter SEAICE_evpTauRelax as an alternative
956        to SEAICE_elasticParm
957      - make lsr boundary conditions free slip (by default), changes result
958      - add code for no slip boundary conditions for lsr
959      - set minimum of zeta to zero (and not 4e8) (changes results)
960      - add a cap on AREA after advecting AREA if seaice_growth is not called
961    o change calculation of Visbeck K:
962      - no longer depend on tapering scheme; instead, compute slope (limited
963        by GM_maxSlope). this is equivalent to what was comuted before with
964        clipping or linear tappering.
965      - fix vertical averaging (wrong by 1/2 level)
966      - leave the old version (but will not be maintained) within
967        #ifdef OLD_VISBECK_CALC / #endif
968      - update output of exp. ideal_2D_oce
969    o change error catch in calc_r_star to improve vectorization
970    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
971      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
972    o adjoint:
973      Re-organized adjoint checkpointing according to Matt Mazloff
974      (but with modifs/completions/cleanups)
975      Storing is now bundled into large arrays to optimized I/O
976      (and second step in cleanup of the_main_loop)
977    
978    checkpoint59b
979    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
980      - export/import (between ocean & coupler) fields needed for ocean DIC.
981    o pkg/seaice:
982      - get rid of three more exchanges seaice_calc_viscosities (required
983        different loop boundaries in seaice_lsr and seaice_ocean_stress)
984      - bug fix in seaice_ocean_stress (update of lab_sea required)
985      - reduce loop boundaries to necessary minimum also in seaice_evp
986      - go back to the old way of computing deltaC/Z as the adjoint likes that
987        better
988    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
989      passive tracer to an Age Tracer) + update output.txt
990    o pkg/exf:
991      - implement A-grid / C-grid selection for wind-stress input files.
992      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
993      for now, in exf_bulk_largeyeager04.F only :
994      - change implementation for case where windspeed + 2. components wind-stress
995        are read-in. AND use rhoConstFresh to convert evap.
996    o pkg/seaice:
997      - use correct EXCH_UV for wind-forcing (on A-grid).
998      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
999        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
1000    o pkg/exf:
1001      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
1002      EXF_INTERPOLATION:
1003      - merge global_with_exf/code version of exf_interp_read.F
1004        to the main code ;
1005      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
1006        reading the file ; Important: This options needs to be defined to recover
1007        previous code.
1008        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
1009      - no longer loose real*8 precision along the way when using exf_iprec=64.
1010    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
1011      - change discretisation of evp-solver in order to avoid another exchange
1012        (changes lab_sea) and clean up a little
1013      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
1014        help the adjoint (this also changes the results slightly)
1015      - add a few "_d 0" where they had been missing in seaice_evp.F
1016      - cleaning up: remove unused seaice_calc_rhs.F
1017    o pkg/exf: some cleaning-up:
1018      - change various "constants" into runtime parameters
1019      - cleaned-up Large&Yeager04 routine which should eventually
1020        replace exf_bulkformulae.F (changed names of S/R and CPP)
1021        and merged various ALLOW_ATM_WIND options
1022     only used with thsice pkg (in thsice_get_exf.F):
1023      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
1024        which are used when useStabilityFct_overIce=TRUE (= the default)
1025      - change default values of ice & snow emissivity and scale downward LW
1026        by ice & snow emissivity.
1027    o pkg/thsice:
1028     fix few little problems, in thsice_calc_thickn.F:
1029      - growth vertically (and not laterally) if iceFrac == iceMaskMax
1030      - melt only laterally if hIce < hThinIce (as the comments say)
1031      and in thsice_extend.F:
1032      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
1033      - start to form ice as soon as the minimum ice-volume is reachable.
1034     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
1035      and cpl_aim+ocn
1036    o pkg/kpp
1037     - move computation of surface related input fields to KPP into a new
1038       subroutine kpp_forcing_surf.F
1039     - remove wrong (within bi,bj loops) EXCH calls.
1040     - little cleaning (add argument myThid in last position, cvs header ...)
1041     - for now, fix conservation problem by exchanging KPPviscAz (may not
1042       be the best fix)
1043    o pkg/seaice
1044     - check for inconsistent evp parameter/cpp-flag combination
1045     - remove leftover errIO flat for obsolete name list error handling
1046    o OpenAD
1047     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
1048    
1049    checkpoint59a
1050    o pkg/seaice: some parameter clarifications and a little bit of clean up
1051    o pkg/thsice: rename run-time parameters:
1052       himin       -> hIceMin
1053       himin0      -> hThinIce
1054       hihig       -> hThickIce
1055       i0          -> i0swFrac
1056       transCoef   -> bMeltCoef
1057       frac_energy -> fracMelting
1058      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
1059       with default values (for now) that do not change the results.
1060      remove old version of thsice vars advection in pkg/seaice.
1061    o in FFIELDS.h:
1062      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
1063      - make pLoad & sIceLoad always available (but still only used if
1064         ATMOSPHERIC_LOADING is #define).
1065    o pkg/kpp: replaced _KPP_RL with _RL
1066    o bug fixes for vertical diffusivity computations when both KPP and
1067        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
1068        are no longer updating the vertical diffusivity array
1069        (passed as argument) but are (re-) setting those arrays.
1070    o pkg/seaice: fix bug in evp solver, while doing that
1071      - change (improve?) discretization of stress computations for both
1072        cgrid-lsr and evp solver
1073      - add a new routine to compute strain rates
1074      - the above changes lab_sea results
1075      - add no slip conditions for evp solver (off by default), lsr-version
1076        may follow
1077      - fix exchange for shear at Z-points (does not change lab_sea)
1078      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
1079        (to force the user to pick a time step since there is not "safe" way
1080        of choosing it)
1081      - add principal stress diagnostics
1082      - rearrange fields for evp a little to avoid having to call a: too many
1083        exchanges and b: exchanges for stress trensor components which we do
1084        not have.
1085      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
1086        of evp, complete rewrite for lsr case (latter is does not yet work
1087        in all cases)
1088    o pkg/kpp: add code to have mixing in shelf ice caverns
1089      - add myThid to all kpp routines (long overdue)
1090    
1091    checkpoint59
1092    o pkg/exf:
1093      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
1094        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
1095      - move exf header files from lower_case.h to UPPER_CASE.h ;
1096        add missing cvs Header & Name
1097      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
1098      - add namelist param. selectStressGridPosition, exf_monFreq
1099      - retire many _CLIM routines, and remove data.exf_clim
1100        + params moved to data.exf
1101        + climsst, climsss now handled by exf_set_gen, i.e.
1102          climss?period=0 refers to constant field,
1103          climss?period=-12 to monthly forcing
1104      - split up namelists in data.exf
1105    o pkg/seaice:
1106      - remove seaice_exch and seaice_exch_uv
1107      - remove superfluous exchange of theta
1108      - add myThid to seaice_budget_ocean/ice
1109      - add new interface for atmospheric wind forcing (C-grid only)
1110        + new routine
1111        + two new field (taux, tauy for stress over ice)
1112        + removed one global field (DAIRN) for C-grid case only
1113    o pkg/thsise
1114      - 2nd set of modifs for thsice adjoint in conjunction with exf
1115    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
1116    
1117    checkpoint58y_post
1118    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
1119      vertical diffusivity, similar to that in MOM4; turned on using
1120      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
1121      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
1122    o Added capability for 3D specification of background vertical diffusion
1123      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
1124      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
1125      "data" file that contains the 3D vertical diffusivity coefficients.
1126    o ice dynamics (pkg/seaice) with thsice thermodynamics:
1127      - add code within pkg thsice to advect & diffuse sea-ice fields
1128      similar to (and will replace) what has been added in  seaice_advdiff.F,
1129      but: - conserving Mass, Heat & Salt.
1130           - better when using non-linear advection scheme (not yet fully tested)
1131           - can also be used in atmospheric set-up (for now, only the diffusion).
1132    
1133    checkpoint58x_post
1134    o IO option for global-file compact format:
1135      - add options when generating topology (utils/exch2/matlab-topology-generator)
1136      - add I/O capability (pkg/mdsio).
1137      - adapt utils/matlab/rdmds.m to read this format.
1138      for now long-line format not yet supported by pkg/mdsio (& exch2).
1139    o shelfice: add a few diagnostics
1140    
1141    checkpoint58w_post
1142    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
1143      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
1144      (and replace horiVertRatio in NH code).
1145      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
1146                         and tutorial_plume_on_slope (sensitive to truncation)
1147    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
1148      directly to drive seaice model (C-grid only)
1149    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
1150     - reintroduce computation of wind from stress,
1151     - compute tau (in exf_bulkformulae.F) from windstress averaged to
1152       mass points to avoid tau = 0
1153     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
1154    o rdmnc.m: make it work with "global" files created with gluemnc
1155    o rdmnc.m : some improvements in dealing with singleton dimension
1156      (tested on all testreport mnc output files).
1157    o genmake2: disable pkg/profiles if netcdf test fails.
1158    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
1159    o move call to cal_readparms up to make calendar parameters/variable available
1160      to all packages
1161    
1162    checkpoint58v_post
1163    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
1164      useDynP_inEos_Zc tested.
1165    o pkg/exf: changes to properly interpolate/mask/scale initial fields
1166    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
1167      and portions thereof.  See read_cs.txt for description and examples.
1168    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
1169      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
1170      following the great-circle arc between those 2 points.
1171    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
1172      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
1173    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
1174     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
1175     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
1176     - still needs work (not working with some options ; efficiency to improve)
1177       and serious testing.
1178     - use this scheme for temperature & salinity in 2 advection test exp.:
1179       advect_xy & advect_xz, respectively.
1180    
1181    checkpoint58u_post
1182    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
1183    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
1184    o testreport: add option "-skipdir" to skip some test.
1185    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
1186      momentum calculation.
1187    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
1188    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
1189      remove checkpoint.F and the_correction_step.F (no longer used);
1190      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
1191    o add option (linFSConserveTr) to correct for tracer source/sink due to
1192      Linear Free surface
1193    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
1194    o pkg/thsice: fix reading mnc-pickups
1195    
1196    checkpoint58t_post
1197    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
1198    o pkg/mdsio:
1199     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
1200       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
1201       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
1202     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
1203     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
1204       either MDS_READ_FIELD or MDS_WRITE_FIELD )
1205     - new S/R (to replace MDSWRITEMETA), which allows to write more
1206       informations (variable names, time ...) to meta files.
1207     - modify rdmds.m to give back the meta file content.
1208    o pkg/diagnostics: change vertical interpolation to be safer, and more
1209       flexible (define p-levels to interpolate to in data.diagnostics);
1210      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
1211       diagnostic pointer.
1212    o pkg/seaice: more cleaning up of seaice_growth, added many comments
1213    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
1214    o fix multi-category seaice:
1215     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
1216       SEAICE_MULTICATEGORY
1217     - fix short wave heat flux
1218    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
1219       and allow to use EVP solver. Change forward lab_sea: test both EVP
1220       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
1221    o Initial check-in of lab_sea adjoint
1222      (very similar to natl_box_adjoint/code_seaice)
1223      * used C-grid and EVP solver
1224      * used KPP, GM/Redi
1225      * uses inAdExact=.TRUE.
1226      * gradient checks fail for both ADM and TLM
1227        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
1228        f.d. gradients actually seem more problematic than ADM, TLM gradients;
1229        issue is related to forward mismatch between g77 an ifort
1230    o pkg/seaice: overhaul of thermodynamics
1231     - growth.F and groatb.F are replaced by new routine seaice_growth.F
1232     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
1233     - move a few global fields out of SEAICE.h into seaice_growth.F and
1234       make them 2D (FICE/QNETO/ ...)
1235     - remove FO (it is the same as QNETO)
1236     - introduce a few local fields to avoid modifying external fields such
1237       as atemp, etc.
1238    
1239    checkpoint58s_post
1240    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
1241      changed exf_set_gen.F so that
1242        genperiod=0 means input file is one time-constant field and
1243        genperiod=-12 means input file contains 12 monthly means
1244    o CG2D: use pre-computed solver main-diagonal (stored in common block);
1245      this affects truncation error ; generate new output file for exp. which
1246      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
1247        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
1248        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
1249        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
1250        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
1251        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
1252    o start implementation of deep-atmosphere and anelastic formulation
1253    o verification: remove 2nd copy of input files and use script "prepare_run"
1254      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
1255    o mom_common/vecinv/fluxform: fix a few initialisation isssues
1256    o profiles: fix for multithreaded case
1257    
1258    o diagnostics: rename few diags:
1259      s/'PRESSURE'/'RCENTER '/g
1260      s/'TICE    '/'oceFreez'/g
1261      s/'TAUX    '/'oceTAUX '/g
1262      s/'TAUY    '/'oceTAUY '/g
1263      s/'SWFLUX  '/'oceQsw  '/g
1264      s/DIFx/DFxE/g
1265      s/DIFy/DFyE/g
1266      and add few ocean-forcing diagnostics:
1267      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
1268    o modifications to pkg/seaice/growth.F and budget.F, which change results of
1269      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
1270      as actual snow thickness.  It now refers everywhere to effective snow
1271      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
1272    
1273    checkpoint58r_post
1274    o modifications to pkg/seaice/growth.F, which change results of
1275      lab_sea experiment: fixes pertain to melting snow over open water, to
1276      masking EVAP under sea ice, and to using the correct AREA variable for
1277      computations of EVAP, PRECIP, HSNOW, and GHEFF
1278    o add ability to read bathy, salt, and theta using MNC (off by def)
1279    o add flooding algorithm and advection of HSNOW for pkg/seaice;
1280      both are turned off by default and do no change any results
1281    o seaice advection with pkg/thsice: a step toward the use of non-linear
1282      advection scheme, but #ifdef or commented out for now (requires more EXCH).
1283    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
1284      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
1285      in natl_box (affects results @ truncation level: update output.txt)
1286    o multi-threading and IO:
1287      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
1288      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
1289        (needed to work with SingleCpuIO): tested in all verif. exp.
1290    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
1291      affects the results (but none of the verification test uses this scheme).
1292    o Adding some pkg/diagnostics capability to pkg/seaice
1293      (will certainly be subject to changes)
1294    o ctrl: adding new control variables:
1295      lwflux, lwdown, evap, snowprecip, apressure, runoff
1296    
1297    checkpoint58q_post
1298    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
1299      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
1300      high_res_cube configuration by 4% on Columbia.
1301    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
1302      add (in global_with_exf/code) a version of EXF_INTERP_READ without
1303      dynamical allocation (seems to work in multi-threaded).
1304    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
1305      single CPU io) so that TAF does not have to see EESUPPORT.h
1306    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
1307    
1308    checkpoint58p_post
1309    o obcs: stop if obcs is used with useCDscheme = .true.
1310    o shelfice:
1311     - fix a sign error so that no slip at shelfice interface works
1312     - remove stop for combination non-hydrostatic code and shelfice. That does
1313       not mean, that the results are correct, but at least they are numerically
1314       stable
1315    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
1316    o added adjoint exch routined for all exch*3d* routines
1317      and updated flow directives
1318    
1319    checkpoint58o_post
1320    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
1321      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
1322    o change controling S/R for writing pickup file (new S/R do_write_pickup)
1323      and clean-up reading/writing of pickup files.
1324    o fix local version of read/write pickup (NH part) in rotating_tank/code
1325    o simplify EXCH interface:
1326     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
1327     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
1328    o added the regrid package
1329    o shelfice:
1330     - add a simple boundary layer scheme to reduce noise
1331     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
1332    
1333    checkpoint58n_post
1334    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
1335       local variable (not in common block).
1336    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
1337      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
1338      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
1339        to work with SingleCpuIO.
1340    o add "_d 0" to real constant of pkg/cfc subroutines ;
1341       update exp. cfc_exemple & tutorial_cfc_offline output files.
1342    o multi-threading and IO:
1343      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
1344        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
1345      - barrier before and after reading.
1346      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
1347      - avoid using MDS_WRITELOCAL for LAND pkg output.
1348      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
1349        common-block variables ; Allows multi-threading with master-thread IO.
1350    o change default MAX_NO_THREADS from 32 to 4 ;
1351      and stop cleanly when MAX_NO_THREADS is too small.
1352    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
1353    
1354    checkpoint58m_post
1355    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1356       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1357    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1358       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1359       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1360    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1361        add MITgcm_tutorials (= code + all the tutorials)
1362    o ecco, option to compute cost for total ssh (mean+anom)
1363    o consistent with addition of ptracer and ssh in pkg/profiles
1364    o profiles: adding ptracer and ssh
1365    o testreport: change multi-test output-file name
1366      (from output.txt.{name} to output.{name}.txt)
1367    o profiles: now ok for mutli-tiles case
1368    o seaice: add 4 parameters for different advection schemes for area,
1369      (effective) seaice thickness, enthalphy, and snow height. Their default
1370      is the standard parameter SEAICEadvScheme
1371    o calc_gw:
1372     - add cosFacU in zonal viscous flux (harmonic.visc.).
1373     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1374       of tutorial_plume_on_slope.
1375    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1376    o calc_gw: true flux-form, account for horizontal grid spacing.
1377      update rotating_tank results, but not plume_on_slope (affected at
1378      truncation level, 11 digits).
1379    
1380    checkpoint58l_post
1381    o calc_gw:
1382     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1383     - remove side-drag for now (need to fix it); update plume_on_slope results.
1384     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1385    o commit code to make SST/SSS weights spatially variable
1386      (based on either variable in-situ or variable initial T/S weights)
1387    o pkg/ecco:
1388      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1389        now based on horizontally varying weights wthetaLev, wsaltLev
1390      * cost_averagesflags now returns year indices in addition to day, month
1391      * sflux balance is performed on annual basis
1392        (sflxumm, sfluxmm2, bal_sfluxmm)
1393      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1394        including separate counting and multipliers
1395    o pkg/rbcs
1396      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1397    
1398    checkpoint58k_post
1399    o testreport:
1400     - always build in dir. "build" (if not there, mkdir build instead of building
1401       & running in input)
1402     - run in dir run (if it exists), in build otherwise.
1403     - call prepare_run (if input/prepare_run exists)
1404     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1405    o pkg/exf modifications to interpolation and rotation routines for more
1406       reasonable treatment of North Pole singularity: for tracers North Pole
1407       value is set to northernmost zonal-mean value, for zonal velocity it is
1408       set to zero, and for meridional velocity it is set to northernmost value.
1409    o pkg/exf/exf_check_range.F
1410     - add tile index to diagnostics and move stop statement to the very
1411       end of the routine.
1412    o pkg/diagnostics: (diagnostics_main_init.F)
1413      define title of isomorphic variables according to the current config.
1414    o pkg/thsice with pkg/seaice dynamics:
1415    - fix domain of computation (interior only, required for exf) and do exchanges
1416    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1417    o towards a standard way of dealing with multi-threading in MONITOR
1418      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1419    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1420       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1421    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1422    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1423    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1424       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1425    o tracer advection:
1426     - clean-up and simplify calc_common_factors.F
1427     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1428       advection subroutine (but still not used within DST advection S/R)
1429    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1430    
1431    checkpoint58j_post
1432    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1433      from file (collects calls previously in FORWARD_STEP)
1434    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1435    o adjoint store dir. adjusted accordingly
1436    o genmake2
1437      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1438    
1439    checkpoint58i_post
1440    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1441      on wind stress (SEAICEstressFactor defaults to 1.)
1442    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1443      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1444    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1445      on CS-grid: no longer loosing mass.
1446    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1447    o pkg/ggl90: fix sloppy output and fix a bug
1448    o pkg/seaice: added SEAICEuseEVPpickup parameter
1449      - Set to false in order to start EVP solver with
1450        non-EVP pickup files when using SEAICEuseEVP
1451      - fix sign error in diffusion in seaice_calc_rhs
1452    
1453    checkpoint58h_post
1454    * Modifications for bottom topography control
1455      o replace hFacC by _hFacC at various places
1456      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1457      o add non-self-adjoint cg2d_nsa
1458      o update autodiff support routines
1459      o re-initialise hfac after ctrl_depth_ini
1460      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1461    * Adding verification for 5x5 box (4-layer) bottom topography control
1462    
1463    checkpoint58g_post
1464    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1465       used for mean seasonal cycle, mean diurnal cycle); add an example
1466       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1467    o pkg/ggl90:
1468      - add parameter (minimum surface kinetic energy)
1469      - fix bug (avoiding division by zero)
1470    o couple pkg/thsice to pkg/seaice:
1471      - modify advection in seaice to accomodate new scalar fields to be advected
1472      - only muliDimAdection scheme work with seaice/thsice
1473      - mapping of thsice-variables to seaice-variables, back and forth
1474      - does not break the verification experiments, but does not give the
1475        desired results either
1476    o pkg/seaice
1477      - make (default) second order advection a bit less confusing?
1478    
1479    checkpoint58f_post
1480    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1481      to pkg/seaice):
1482      - new routines thsice_map_exf and thsice_get_exf provide the interface
1483      - add an additional formal parameter to thsice_solve4temp
1484    o pkg/exf:
1485      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1486      - correct Stefan-Boltzmann constant
1487      - new parameter for longwave surface emittance
1488      - separate some stuff from exf_bulkformulae into new routines  
1489        exf_radiation, exf_wind
1490      - add new parameters and constants: longwave emissivity for ocean, ice
1491        and snow, evaporation parameters over ice
1492      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1493        either wind from stress or stress from wind
1494    o pkg/thSIce:
1495    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1496    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1497       and THSICE_CALC_THICKN
1498    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1499    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1500      to make debugging easier.
1501    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1502    o pkg/bulk_force:
1503      - clean-up comments and parameters ;
1504      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1505    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1506      generate new output for test-experiment: aim.5l_cs.thSI
1507    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1508      testreport accordingly
1509    
1510    checkpoint58e_post
1511    o SEAICE_CGRID adjoint done
1512    o R_STAR adjoint implemented.
1513      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1514      * need to sort out init. of h0facc, etc.
1515    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1516      to be able to use it in pure forward.
1517    
1518    checkpoint58d_post
1519    o upgrade simple test-experiment to tutorial example:
1520     step.1: duplicate the experiment and (step.2) will remove the old copy.
1521      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1522      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1523      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1524      tutorial_global_oce_biogeo    <- copy of dic_example
1525      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1526      tutorial_plume_on_slope       <- copy of plume_on_slope
1527      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1528      tutorial_global_oce_optim     <- empty for now (David ?)
1529      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1530     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1531    o correct a sign problem in cost_scat.F
1532    o obcs and ptracers: fix boundary conditions for advections schemes
1533      with larger stencil
1534    o thsice adjoint: start
1535    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1536      completeness
1537    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1538      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1539    o ptracers adjoint:
1540      * avoid extensive recomputatations
1541      * fix missing re-init. of gptr (missed by TAF)
1542    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1543      me to turn off the excessive output to STDOUT that this package produces
1544    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1545      and add those terms in Vector-Invariant formulation.
1546    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1547      if the control period (xx_hfluxperiod etc) is 0
1548    o in profiles pkg, clean routines and fix details
1549    o in ecco pkg, reading ssh data:
1550      fix problem in case the model does not start at iter0=0
1551    o fix mnc-pickup/restart for ptracers
1552    o new package prifiles:
1553      code to compute profile-based cost by Gael Forget
1554      (modifs in ecco, ctrl, autodiff)
1555    o Benign bug fix in initialization (spotted by M. Mazloff) of
1556      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1557    
1558    checkpoint58c_post
1559    o adjoint: finish NLFS adjoint and provide reference output in
1560      verification/global_ocean.90x40x15/results_ad_nlfs
1561    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1562      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1563      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1564      with SEAICE_CGRID defined.
1565    o move calendarDumps from "data" to "data.cal" and clean-up the code
1566      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1567    o add useEXF & useCAL flags (for now, set in hard-coded way)
1568    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1569      (were missing in NH mode, and wrong in quasihydrostatic mode).
1570      waiting for Chris updated version of calc_gw to add those CALLs.
1571    o fix bug in quasihydrostatic S/R ;
1572      add a test for this option: global_ocean.90x40x15.qshyd
1573    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1574      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1575    o add on/off flag useOffLine for package OFFLINE
1576    o seaice:
1577      - modify advection so that it works also on the C-grid
1578      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1579        problem in multi-tile runs with C-grid
1580      - add flags for clipping ice velocities and/or masking solver forcing
1581      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1582        C-grid solver
1583      - added a few comments to seaice_diffusion.F
1584      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1585        are now exclusive)
1586      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1587        required re-ordering the code a little:
1588       + make DAIRN global variable (defined in SEAICE)
1589       + move computation of the viscosities eta and zeta into a new separate
1590         routine (because I need to recompute them in seaice_ocean_stress.F)
1591    
1592    checkpoint58b_post
1593    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1594      update output.txt of exp. aim.5l_cs.thSI
1595    o various mnc cleanups and improvements:
1596      + shrink lookup tables by factor of ~4
1597      + better error reporting when running out of lookup space
1598      + able to handle longer path/file names (up to 500 chars)
1599    o adjoint:
1600      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1601      - TBD: "hidden" mom_vecinv recomp. in dynamics
1602    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1603     (allow to differentiate between forcing components using new integer flags:
1604      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1605     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1606    o ecco
1607      - enable trend removal from SSH anomaly obs.
1608    o adjoint
1609      - a fix for PmEpR when #undef EXACT_CONSERV
1610      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1611      - try to fix "hidden" recomp. in forward_step for NLFS
1612        (NLFS seems broken sometimes after I checked it in)
1613    o seaice:
1614     - add c-grid version of the dynamic solver:
1615       + three new routines that are the c-grid substitute lsr, dynsolver
1616         and ostres
1617       + put a few fields that were local to dynsolver into global common
1618         blocks, so that I can move the computation of stresses etc into
1619         seaice_lsr (saves coding but may break the adjoint).
1620     - replace more hardwired parameters by runtime parameters
1621     - add ice masks that mask the rhs of the implicit solvers where there
1622       is no ice (commented out in seaice_dynsolver, because i am not sure
1623       if this works properly), eventually this should replace the clipping
1624       of ice velocities in seaice_dynsolver to +/-40cm/s.
1625    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1626      include it only where its needed
1627    o move balancing of fluxes before the call of external_forcing_surf
1628    o seaice:
1629      - correct units of turning angles (now they are really in degrees)
1630      - move computation of GWATX/Y out of main routine into dynsolver
1631      - initialize GWATX/Y in seaice_init
1632    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1633      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1634    o seaice: add runtime flags for turning angles (default to zero)
1635    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1636      and trend from exf forcing and ctrl control adjustments
1637    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1638      (since checkpoint57x_post)
1639    o change the default rotation period to 86164.s = the Earth rotation
1640    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1641      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1642    o seaice advection: add code for choosing between the default (2nd order
1643      central differences) and multiDim advection schemes provided by
1644      pkg/generic_advdiff
1645    o seaice:
1646      - removed all references to SEAICE_GRID.h fields from
1647        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1648        (cubed-sphere configuration will change a little)
1649      - grid computations in seaice_init are obsolete now.
1650      - cleaned up code a little so that is easier to read (hopefully).
1651      - added new (better?) discretizations of default advection and diffusion
1652        (turn on with SEAICEuseFluxForm)
1653      - replace 1 in 3d global fields by kSurface in growth.F
1654      
1655    checkpoint58a_post
1656    o seaice:
1657      - bug fix in advect.F
1658    o shelfice:
1659      - separate shelfice load anomaly from pload (breaks with time
1660        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1661        Its default is 0., but it may be computed more cleverly from (unknown)
1662        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1663        done offline. A good approximation of the pressure load anomaly is
1664        necessary to avoid large initial adjustment processes underneath
1665        deep-reaching shelfice.
1666      - small fix in ISOMIP shelfice_thermodynamics
1667      - add more sophisticated thermodynamics of Hellmer (1989), this is
1668        now the default
1669      - give a few constants more intuitive names
1670    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1671      if bulk formulae are used in long integration (especially EmPmR). Turn
1672      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1673      if balancePrintMean, the imbalance that is substracted is printed to
1674      STDOUT.
1675    o fix bug (typo) in obcs_apply_eta.F
1676    o add a new package shelfice which enables us to model the circulation
1677      underneath shelf-ice with draughts of hundreds of meters.
1678     - works
1679     - to do: + include improved thermodynamics
1680              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1681                instead of new field kTopC
1682              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1683                instead of new field R_shelfIce and new code in ini_depth.F
1684                and ini_mask_etc.F?
1685              + adjust vertical mixing schemes?
1686    o seaice pkg:
1687     - add a cpp-flag to include a simple formula for a salinity dependent
1688       freezing point of sea water at the surface
1689     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1690       meridional stresses are now different (and hopefully correct)
1691    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1692       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1693       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1694    o pkg/diagnostics: add options and parameters for regional-statistics
1695       diagnostics ; define regions by reading a region-mask from a file
1696       (might add other options later)
1697    o pkg/bulk_force:
1698     - add option and parameters to use AIM surface-flux formulae.
1699     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1700       others forcing fields (defined in PARM05, parameter file "data") are loaded
1701       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1702     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1703     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1704     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1705       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1706     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1707    
1708    checkpoint58
1709    o add "--embed-source" option to genmake2 which, when the supporting
1710      tools can be compiled (as determined by genmake2) will turn on the
1711      embed_files package which then embeds the entire MITgcm source code
1712      (*.[fFhc] + Makefile) used for the build within the executable
1713      - requested by CNH but off by default
1714      - adds a paltry <9MB to the mitgcmuv executable in most cases
1715      - only writes the output when useEMBEDSRC in eedata is true
1716    o clean up 3-dim. relaxation codes:
1717      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1718      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1719      * Thanks to Tom Haine for testing!
1720    
1721    checkpoint57z_post
1722    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1723      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1724    o fix the pickup behavior for obcs in combination with ptracers
1725    o fix a bug in ptracers_external_fields_load
1726    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1727      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1728    o transfered surface NH pressure to eta field (if exactConserv).
1729    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1730         and update lab_sea output.txt file.
1731    o completing 3-dim. relaxation code: additional term
1732         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1733      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1734      * At compile time, in "EXF_OPTIONS.h" set
1735          #define  ALLOW_CLIMTEMP_RELAXATION
1736          #define  ALLOW_CLIMSALT_RELAXATION
1737      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1738          tauThetaClimRelax3Dim = 15552000.0,
1739          tauSaltClimRelax3Dim  = 15552000.0,
1740      * 3 cases:
1741          1) Use a constant-in-time 3-dim. field
1742          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1743          3) Real-time relax. to time-evolving prescribed field
1744    o Adding Laplacian-type smoothness constraint on
1745      initial and boundary (forcing) controls (ic, bc)
1746      * enable at compile-time via
1747        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1748      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1749      * Absolute scale somewhat unclear so far
1750      * no area weighting was included since no other cost term does so far
1751    
1752    checkpoint57y_post
1753    First step for a NLFS adjoint
1754    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1755    o new init. routines for calc_r_star, calc_surf_dr
1756    o still need to deal with ini_masks_etc
1757    o testreport seemed happy
1758    checkpoint57y_pre
1759    
1760    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1761    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1762    o add new offset feature to offline pkg (plus minor cleanup)
1763    o cfc fixes for final year of integration
1764    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1765      be in GCHEM_OPTIONS).
1766    
1767    checkpoint57x_post
1768    o fix testreport Pb in multiple test experiment.
1769    o cleanup our namelist syntax in verification:
1770      - make it more F95 standards compliant (some work still needed)
1771      - allows the vast majority of our tests to work with gfortran
1772    o Non-Hydrostatic:
1773     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1774     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1775    o Allow to apply AB on T,S rather than on AB(gT,gS):
1776     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1777     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1778       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1779     - need a "clever" read_pickup to restart from the other AB formulation
1780    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1781    o remove some unused variables (reduces number of compiler warnings)
1782    o adjoint
1783      * Disable useVariableViscosity for adjoint for time being
1784        (there are a number of extensive recomputations)
1785      * Initialize certain variables needed for adjoint
1786    
1787    checkpoint57w_post
1788    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1789                 fix the singleCpuIO RS version of MDSWRITEFIELD
1790       and add a WARNING if using globalFiles=T with multi-processors.
1791    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1792      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1793    o tracer advection scheme:
1794      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1795       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1796       was not very convenient).
1797      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1798       (further tests needed for the implicit DST & Flux-Limiter schemes).
1799    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1800      and sRef for convenience, handy, when you want to initialize
1801      ptracers in a large domain with a constant non-zero value. Also,
1802      untangle ptracers_init.F a little.
1803    
1804    checkpoint57v_post
1805    o change dome exp. to use variable viscosity in side-drag terms.
1806    o remove all the files from the cfc_offline test since they are now
1807      incorporated into tutorial_cfc_offline which has been producing
1808      identical results for a few days of testing
1809    o add new parameter: sideDragFactor to enable half-slip-side BC
1810      and change side-drag S/R to use viscosity from mom_calc_visc
1811      (can switch back by setting sideDragFactor=0.); affects results at
1812      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1813       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1814    o vorticity & strain are now computed without masking, to account for
1815      no-slip-side BC in variable viscosity calculation ; mask is applied
1816      anyway later on, before computing advection/coriolis terms.
1817    o modify exp4 to test new obcs support for reading from external files
1818      and for passive tracers
1819    o fix behavior of ptracers_monitor when monitor output is written to a
1820      netcdf-file; still not independent of monitor.F (writes in the same
1821      file).
1822    o change default value of tRef (put a uniform, meaningful value for ocean
1823      & atmos) and initialize sRef (was missing, as Martin mentioned).
1824    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1825      to be proportional to enstrophy dissipation length.  Thus,
1826       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1827      This is now consistent with Smagorinsky and with the manual.
1828    
1829    checkpoint57u_post
1830    o OBCS and PTRACERS: add open boundary support for passive tracers
1831      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1832        OB-values from file; this is not different from the way theta and salinity
1833        are treated
1834      - however, Orlanski-radiation conditions are not supported, and the model
1835        will stop if you use pTracers and Orlanski at the same time.
1836      - beefed up the rountine obcs_external_fields_load: now only those open
1837        boundary values are overwritten with values from files for which there
1838        are really files, otherwise the OB-fields remain untouched. This makes
1839        it possible to use different OBs at different ends of the domain (as
1840        with EXF)
1841    o reduce number of exch calls in shap_filt (s2).
1842    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1843      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1844    
1845    checkpoint57t_post
1846    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1847    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1848      same truncation, independent of the face number: affects affects several
1849      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1850    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1851      note that biharmonic viscosity + no-slip was not tested in any experiment.
1852    o fix bug in non-linear free-surf side-drag ; generate new output for
1853      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1854    o make mnc honor the writeBinaryPrec flag for most kinds of output
1855    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1856    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1857      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1858    o add brackets in multi-terms sum to get same truncation, independent of
1859      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1860      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1861    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1862      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1863      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1864      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1865      Suggested values of viscosity parameters found in mom_calc_visc.
1866      Many new viscosity diagnostics available.
1867    
1868    checkpoint57s_post
1869    o Add clearing-house for viscosity calculations, mom_calc_visc and
1870      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1871      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1872      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1873      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1874      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1875      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1876      ViscAhStrain and viscAhTension are now retired.
1877    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1878    o In response to JMC's bug report, genmake2 now ignores any soft-links
1879      that it finds in the *current* directory when searching for files.
1880      Soft-links found in any other source directories will still work as
1881      they did before.
1882    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1883      a C routine to unlimit the stack size
1884    o mnc-ify pkg/aim snapshot vars
1885    o mnc-ify pkg/land as requested by Daniel
1886    o various changes to mnc including:
1887      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1888      - output can now be grouped so that all files within a group
1889          change the ITER portion of their names in lock-step together
1890      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1891          and works with both EXCH1 and EXCH2 (but needs more testing)
1892      - writing works for all verification test cases w/ g77 on Linux
1893    
1894    checkpoint57r_post
1895    o make MNC variable initialization happen earlier
1896    o add diagnostics for (almost) each term of the momentum Eq.
1897    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1898    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1899    o remove MINIMAL_TAVE_OUTPUT option ;
1900      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1901    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1902      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1903    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1904    o add time-dependent SST, SSS control
1905    o cost terms in ecco/ modularized (new cost_generic.F)
1906    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1907    o new infrastructure for seaice model vs. obs misfits in seaice/
1908      * driver from the_main_loop.F is seaice_cost_driver.F
1909      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1910      * gradient check in Exp. 6a of natl_box_adjoint/
1911    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1912      (see README file)
1913    
1914    checkpoint57q_post
1915    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1916    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1917      - bug was reported by Jean-Michel and Ian Fenty
1918    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1919      update exp. cpl_aim+ocn output.
1920    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1921      Needed for high-res. runs with large global files
1922      to be able to limit tapelev size
1923    o Changed some tests for adjoint:
1924      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1925      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1926      * global_ocean.90x40x15/ back to default 3-level checkpointing
1927    o Modifications to enable scripted COMMON to MODULE conversion
1928      * verification/OpenAD/code/ has necessary scripts and description;
1929      * converts, compiles and runs successfully;
1930    
1931    checkpoint57p_post
1932    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1933    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1934      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1935    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1936    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1937      (was already the case for dissipation with mom_vecinv,
1938       and also the case for grad.PhiHyd when staggered-timeStep)
1939      This will allow to put dissipation out-off the AB time-stepping.
1940     Unfortunately, affects truncation error. Update output of exp. that "fails"
1941      (cg2d matching number) and leave the others for later: front_relax(10),
1942      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1943      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1944    
1945    checkpoint57o_post
1946    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1947      (2) its ready to be documented during the 20050801 DocFest
1948    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1949      for ideal_2D_oce and lab_sea on linux_ia32_g77
1950    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1951      in global1x1_tot/code_seaice_adj to access indices 32, 33
1952      (worth another tag)
1953    
1954    checkpoint57n_post
1955    o adding precip control xx_precip 32
1956    o adding swflux control xx_swflux 33
1957    o Replacing 10 forcing penalty cost routines by 1 generic.
1958    o Implementing partitioning in time-mean and variable adjustment
1959      for atmos. state.
1960    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1961    o in natl_box_adjoint:
1962      * updated exp 1 to 10
1963        (but does not have time-mean vs. variable split results yet)
1964    o updated global1x1/*_seaice_adj/
1965      to incorporate latest changes
1966    o enable useSingleCpuIO for mdsio vector routines
1967      (applies in particular to tapelev I/O)
1968    o removed inefficient K-loop in all active_file*control*.F
1969    
1970    checkpoint57m_post
1971    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1972      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1973    o pkg/exch2: filling of face-corner halo regions is optional
1974      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1975    
1976    checkpoint57l_post
1977     tag before updating tutorials (pre-release-2)
1978    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1979       for output and interpolation of input fields onto model grid)
1980    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1981       Affects results of exp. rotating_tank ; update output.txt.
1982    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1983          and taking the square quantity and/or using a fraction-weight field.
1984    o fix aim_diagnostics_init.F mate numbers.
1985    o add mnc output capability to diagnostics/diagstat and update
1986      our cvsignore files for the ACSII output generated
1987    
1988    checkpoint57k_post
1989    o lab_sea now uses diagnostics package and provides a suite of
1990      new EXF diagnostics output.
1991    
1992    checkpoint57j_post
1993    o exf
1994      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1995        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1996        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1997      * extended diagnostics output
1998        - now includes all EXF variables
1999        - hs, hl moved to common block
2000        - separate S/R for diagnostics, called after ctrl vector is added
2001        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
2002        - EXFqnet contains true Qnet (i.e. includes qsw)
2003      * updated verif. lab_sea, global_with_exf
2004      * Rearranging hflux (exf_mapfields -> exf_getforcing)
2005        to ensure that diagnostics sees a true EXFqnet
2006    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
2007    o diagnostics pkg: change pointers so that 1 diagnostic can be used
2008      several times with different frequencies.
2009    o mnc-ify the thsice package as requested by Daniel Enderton
2010      - the monitor--MNC output needs work
2011      - many attributes need to be added (most are currently blank)
2012    o mnc-ify theaim_v23 package as requested by Daniel Enderton
2013      - many attributes need to be added (most are currently blank)
2014    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
2015    o add Sadourny like discretization to the 4th.O vorticity advection scheme
2016    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
2017      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
2018         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
2019    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
2020     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
2021    
2022    checkpoint57i_post
2023    o Diagnostics package was changed: diagnostic allocation is now deactivated
2024      by setting an empty file name in the namelist (used to be by setting 0 frequency)
2025    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
2026      add 1rst Order upwind vertical Shear.
2027    o add a quick fix for A/B checkpointing in OFFLINE mode
2028    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
2029      end-run around the C/Fortran linking horror in eesup/src/timers.F
2030    o added pkg/runclock: allows user to terminate run based on wall clock
2031    o added non-hydrostatic scaling parameter: nh_am2
2032    o pkg/my82: futile attempt to make results compiler-independent by adding
2033      some "_d 0", etc. no effect.
2034    o for mnc output, fill the 'T' coordinate var with myTime and create a
2035      separate 'iter' variable for iteration count
2036    o pkg/diagnostics:
2037      add new capability: output of Global/Regional & per-level statistics ;
2038      tested against monitor output (including land & thSIce) on various exp.
2039    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
2040    
2041    checkpoint57h_done
2042      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
2043      data.diagnostics, data.gchem, data.ptracers) is done.
2044    
2045    o pkg/diagnostics: prepare for Global/Regional statistics.
2046      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
2047    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
2048      and rename it: DIFFERENT_MULTIPLE
2049    
2050    checkpoint57h_post
2051    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
2052    o pkg/diagnostics: change output frequency, now in seconds (instead
2053      of Nb of iterations). This requires to change data.diagnostics.
2054    checkpoint57h_pre
2055    
2056    o in mnc, let the user create the output dir if both mnc_outdir_date
2057      and mnc_outdir_num are false
2058    o add fflags() to pkg/diagnostics which allows one to specify, on a
2059      per-file basis, the file precision [default behavior is unchanged]
2060    o added diagnostics to pkg/kpp, including computation of mixed layer
2061      depth based on a temperature/density criterion
2062    o updated verification/natl_box to test the new pkg/kpp diagnostics
2063    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
2064    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
2065    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
2066      not mnc -- this mistake was found by JMC and is now corrected
2067    
2068    checkpoint57g_post
2069    o add Adams-Bashforth 3rd Order time stepping:
2070      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
2071      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
2072    checkpoint57g_pre
2073    
2074    o make lambda[Theta,Salt]ClimRelax spatially varying
2075      (default remains spatially uniform constant based on tau)
2076    o added new control variables
2077      * init. uVel, vVel, etanN
2078      * lambda[Theta,Salt]ClimRelax
2079    o separate masks used for ctrl_pack/unpack 'from write_grid' output
2080      (suggested by G. Forget)
2081    
2082    checkpoint57f_post
2083    o add parameter "baseTime" = model base time = time at iteration zero
2084      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
2085      account for baseTime shift
2086    o move Coriolis arrays from PARAMS.h to GRID.h
2087    checkpoint57f_pre
2088    
2089    o mnc-ifying the seaice package
2090    o introduced an alternative length scale calculation for use in the limiting
2091      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
2092    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
2093    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
2094      as well as grad(vort3).  Made it compatible with both approximate form
2095      for the cubed sphere and full form of these gradients.  Added flag
2096      useFullLeith to select between approximate and full form.  
2097    o add "d0" in getcon.F to reduce differences between compilers/platforms
2098      update output.txt of exp. fizhi-gridalt-hs
2099    o change port_rand funtion to allow to set the seed.
2100    o fix obscure MNC bug involving conversion between reals and integers
2101      - it caused no problems with certain (eg. gcc, ifc) compilers but the
2102        new version is now more standards-compliant
2103    o adjoint-related modifications
2104      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
2105      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
2106      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
2107    
2108    checkpoint57e_post
2109    o Adding eddy stress controls a la Ferreira et al.
2110    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
2111    
2112    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
2113      update output.txt of exp. fizhi-gridalt-hs
2114    o add more "Z" dimensions and associated coordinate vars to MNC
2115    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
2116    o parameter calendarDumps: when set, approximate months (30-31 days) and years
2117      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
2118      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
2119      months and years.  Requires pkg/cal.
2120    o diagnostics: add pickup functionality
2121      - off by default for backwards compatibility
2122      - current version only uses MDSIO -- MNC will be added
2123    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
2124    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
2125    
2126    checkpoint57d_post
2127    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
2128    o modify verification/ideal_2D_oce so that it tests the creation of mnc
2129      output from the diagnostics package
2130    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
2131    o make genmake2 more portable by using ".$FS" instead of ".f" for more
2132      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
2133    o add coordinate variables to the MNC output from the diagnostics package
2134    o change MNC-flags default value: true when useMNC=TRUE
2135    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
2136      the ability (off by default) to read the grid information using MNC
2137    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
2138    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
2139    o do snap-shot diagnostics at the middle of the time-interval (instead of
2140      at the end).
2141    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
2142      new test for AIM with thSIce + slab-ocean
2143    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
2144    o move state variable diagnostics to the beginning of the time step ;
2145      (note: still needs some work specially for snap-shot diagnostics)
2146      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
2147    
2148    checkpoint57c_post
2149    o Change testing option (-ieee) to get closer agreement between g77 & ifort
2150    o generate new output.txt files on faulks with g77 & the new -ieee option
2151    checkpoint57c_pre
2152    
2153    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
2154      update output.txt of exp. global_ocean.90x40x15
2155    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
2156      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
2157    o add saltFlux(+File) forcing capability with periodicExternalForcing
2158    o allow to use pkg diagnostics for GM-Redi & ThSIce output
2159    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
2160    o improvements for the MNC output from DIAGNOSTICS:
2161      - correct handling of the unlimitied dimension
2162      - all dims now have associated coordinate variables
2163      - variables located at U, V, and Corner ("Z") points are now written
2164        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
2165        *all* data points are output
2166    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
2167    o added pkg/seaice/seaice_monitor.F
2168    o mdsio_readfield.F can now read files visible only to master MPI process.
2169    o pkg/seaice: some test code for ice-modified ocean stress
2170    o exf_getffields interpolation defaults to bilinear for all scalar forcing
2171      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
2172      spurious negative numbers for precipitation and humidity.  Will cause
2173      some small numerical differences for integrations using pkg/exf/exf_interp.F.
2174    o pkg/ctrl/
2175      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
2176        May be enabled via doPackDiag
2177      *  introduce z-scaling of
2178         + gradient (doZscalePack) and
2179         + control (doZscaleUnpack)
2180    o pkg/mdsio/
2181      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
2182      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
2183    
2184    checkpoint57b_post
2185    o simplify options in diagnostics_fill arguments (remove weird combinations)
2186    o fix MNC coordinate variables so that they now contain per-face index
2187      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
2188      general, EXCH2 grids are only aligned to a "local" coordinate system
2189    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
2190    o Implement instantaneous output within pkg diagnostics:
2191      setting a negative frequency in data.diagnostics produces
2192     "snap-shot" output (as opposed to time-average if freq > 0)
2193    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
2194      NOTE: change ptracer diagnostics name: use 2 characters to work with
2195            more than 9 tracers. Add also diagnostics of advect & diffus flux.
2196    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
2197      becomes the coordinate variable for the 'T' dimension
2198    o add CF-style coordinate variables to MNC
2199      - just a first cut:  numbers are meaningless on the cubesphere and
2200        missing along the T axis but otherwise it works!
2201    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
2202    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
2203    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
2204      this is based directly on what the model compute, so that the content of
2205      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
2206    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
2207    o clean up build options files for SunOS, in particular
2208      - remove -traditional from xmakedepend
2209      - change -xarch=v9 to -xarch=native for f77
2210      - restore use of make (not gmake)
2211      - add CC=gcc if using g77
2212    o changes per discussion of AM, JMC, & EH3 today:
2213      - move redundant "grid" variables out of "state" -- in preparation of
2214        creating proper CF-style coordinate variables and in recognition
2215        that any/all grid variables can be easily copied (eg. w/NCO) from
2216        the grid files into any of the other NetCDF files
2217      - *always* output grid variables with MDSIO (this will eventually be
2218        changed)
2219      - output MNC grid file if useMNC is true
2220    o every instance of _END_MASTER() has been found and replaced with
2221      _END_MASTER( myThid ) in order to satisfy certain picky Sun
2222      preprocessors
2223    o re-arrange diagnostics pkg initialisation:
2224     - allow each package to extend the available diagnostics list
2225     - add some checking and fix small problems (multi-threaded, ...)
2226     - new S/R diagnostics_fill (replace fill_diagnostics):
2227       look through the short list of active diag. (instead of the long list)
2228       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
2229    
2230    checkpoint57a_post
2231    o this set of changes restores TAMC compatibility
2232      tested for global_ocean.90x40x15 adjoint on trough
2233      (what a pain)
2234    
2235    checkpoint57a_pre
2236    o some modifs in tools/build_options for sunos
2237    o call ctrl_pack for ctrl at end for optimcycle=0
2238    
2239    checkpoint57
2240    o add horizontal bi-harmonic viscosity for vertical velocity
2241      - new parameter viscA4W (defaults to viscA4)
2242      - affects only non-hydrostatic code
2243      - to be done: no-slip lateral boundary conditions
2244    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
2245    o implement Implicit Vertical advection for pTracers
2246    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
2247      (implemented also for implicit vertical diffusion & advection)
2248    o OBCS: extend application of tracer open boundary conditions
2249      to a strip beyond the boundary of width Olx/Oly
2250    o add call monitor to TAF set of required calls (flow directives)
2251      and include in natl_box_adjoint
2252    o untangle a few ifdefs related to cost, ctrl, autodiff
2253      untangel a few ALLOW_ECCO_OPTIMIZATION
2254    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
2255      (theta2, salt2 in ecco_cost_weights)
2256    
2257    checkpoint56c_post
2258    o OBCS as control variables
2259      - update ctrl_ad_diff.list, obcs_ad_diff.list
2260      - remove balance of obcs controls from default
2261      - fix index bug nobcs in ctrl_init
2262      - fix dummy fields filen in ctrl_pack
2263      - add dummy weights for obcs
2264    o lsopt: comment out fort.94 output
2265    o optim:
2266      - remove unnecessary header files
2267      - adjusted namelists
2268      - add xerbla.F to Makefile
2269    o exf:
2270      - multiple modifications of exf_check_range
2271      - unit change in exf_init_runoff from [m/year] to [m/s]
2272    o mdsio:
2273      - i/o-vector change debugLevel from debLevA to debLevB
2274    
2275    checkpoint56b_post
2276    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
2277      is called from DO_THE_MODEL_IO
2278      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
2279      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
2280      - clean up PTRACERS_WRITE_TIMEAVE a little
2281    o add another verification experiment that tests both the cfc-pkg and
2282      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
2283      reactive tendencies treated inline with regular timestepping
2284    o testreport previously did a lousy job of comparing small numbers, so
2285      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
2286      implemented in the little c-progam tmp_cmpnum.c which is embedded in
2287      testreport.
2288    o ptracers_monitor: bug fix for MPI
2289    
2290    checkpoint56a_post
2291    o GCHEM: finish reorganizating the package
2292      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
2293        (introduces another 3D-array for each passive tracer, but only if
2294        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
2295        gchemTendency is not needed because the timestep is done separately)
2296      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
2297      - GCHEM is now---more or less cleanly---separate from PTRACERS
2298      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
2299        so clear to me how that should be done in a general way.
2300    o CFC: improve formatting of output in CFC_ATMOS
2301    o PTRACERS:
2302      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
2303        that ALL experiments with ptracers enable can be checked. This makes
2304        GCHEM_MONITOR obsolete.
2305      - include a runtime parameter PTRACERS_monitorFreq that defaults to
2306        monitorFreq
2307      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
2308    o add PTRACERS (PTR0[1-5]) to testreport output
2309    o exf_check_range:
2310      * default changed to .TRUE.
2311      * will check values for niter0 if debLevA, every timestep if debLevB
2312      * STOP in exf_check_range if 'out of range'
2313      * range chosen generous to allow for potential extema
2314      TBD: a version with stricter range
2315           permitted range would be runtime parameters
2316    o GMredi:
2317      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
2318      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
2319      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
2320    o GCHEM:
2321      - move call to GCHEM_FORCING_SEP, so that it is now called before
2322        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
2323      - introduced a useGCHEM runtime flag and applied it everywhere.
2324      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
2325        this flag is now only visible within GCHEM-pkg routines.
2326      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
2327        be replaced by a 3D array that is computed before thermodynamics; for
2328        this, the tracer ID iTracer had to be included into the parameter list
2329        of ptracers_forcing
2330      - set up forward_step to call gchem_forcing, that will replace
2331        gchem_forcing_int in ptracers_forcing
2332      - cleaning up
2333    o small cleaning of exch2: remove files that are also in eesupp/src
2334    
2335    checkpoint56
2336    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
2337    o mnc: cleanup "full" files--fixes out-of-memory problem
2338    o ECCO-GODAE
2339      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
2340      * fully merged and updated from SIO code
2341        windstress sign change affects
2342        - exf_inscal_[u/v]stress
2343        - sign of xx_tau[u/v] adjustments
2344        - signs in cost_scat
2345      * ctrl_get_gen: avoid update of tau[u/v] for first few days
2346      * natl_box_adjoint updated and compressed
2347      * 2-level checkpoint switch added
2348        (tested in EXP. 1 of natl_box_adjoint)
2349      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
2350    o SVD
2351      * first complete, non-hacked version for SVD calculations
2352      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
2353        performed via direct access files admtlm_vector.it????
2354        (via ctrl_[un]pack)
2355      * optimcycle is used for ARPACK iteration counter
2356        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
2357      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
2358        and add linear transforms where necessary
2359      * controls are initial/final SST, SSS (can be extended; need to check
2360        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
2361    o mdsio: filename info to both stderr, stdout
2362    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
2363      from sign change
2364    
2365    checkpoint55j_post
2366    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
2367      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2368    o add consistent build directories and .cvsignore files to verification
2369    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
2370    o make all subroutines 30 or less characters in length for certain older
2371      compilers to work (a thorough search only turns up two routines in
2372      pkg/ptracers)
2373    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
2374      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2375    
2376    checkpoint55i_post
2377    o change arrays for total vertical diffusivity (2.D if explicit,
2378      3.D if implicit) ; each ptracer uses its own background value.
2379    o added mnc/NetCDF output capability to ocn_compon_interf
2380      - added bits to verification/cpl_aim+ocn so that it can run on
2381        ITRDA and other clusters without the mpirun "-wd" option
2382    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
2383      configuration
2384    o give MNC the ability to create additional files rather than
2385      exceeding a specified file size limit "MNC_MAX_FILESIZE"
2386      - the default is just less than 2GB which is a practical limit
2387        on many systems
2388    o Compute the non-local term using either KPP vertical diffusivity (=default)
2389       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
2390    
2391    checkpoint55h_post
2392    o add verification test "vermix"
2393    o remove all the *_ioinc flags and replace with the single global
2394      outputTypesInclusive flag
2395    o allow to set a vertical profile of vertical diffusivity for T & S
2396    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
2397    o useMNC moved from data.mnc to data.pkg
2398    
2399    checkpoint55g_post
2400    o Renaming carbon AD experiments to comply with testreport conventions
2401    o Updating adjoint of Held-Suarez hs94.1x64x5
2402    o Fixing directives for non-ECCO forward_step, after ECCO directives
2403      have been fixed to avoid recomp. of do_oceanic_phys
2404      Works well for global_ocean.90x40x15,
2405      but recomp. issue remains for carbon
2406    o Updating adjoint output for natl_box_adjoint after
2407      pkg/ecco has been modified (see taga c55d_post)
2408    
2409    checkpoint55f_post
2410    o rename to timeave_init_fixed
2411    
2412    checkpoint55e_post
2413    o some delicate re-shuffle of store directives to avoid one
2414      extra call of do_oceanic_physics
2415      affects ecco_the_main_loop.F, do_oceanic_physics.F
2416      checkpoint_lev1_directives.h
2417    o NB: this may break global_ocean adjoint temporarily,
2418      but it is clear how to fix it. Will do later, need this now.
2419    
2420    checkpoint55d_post
2421    o ECCO specific cost function terms (up-to-date with 1x1 runs)
2422    o ecco_cost_weights is modified to 1x1 runs
2423    o modifs to allow observations to be read in as
2424      single file or yearly files
2425    o enable to read exf forcing fields as either
2426      single file or yearly files (flag useExfYearlyFields)
2427    checkpoint55d_pre
2428    
2429    o switch between 2-level and 3-level checkpointing
2430    o add ability of MNC to write local and "partial" (eg. 2D slices where
2431      the full 3D field is never actually stored) arrays to NetCDF files
2432      with the correct (that is, the complete multi-dimensional) set of
2433      array indicies
2434      - used in mom_vecinv() to write the diagFreq output
2435      - tested (demonstrated) in verification/aim.5l_cs
2436    o further mnc-ification
2437      - add verification/lab_sea to the list with mnc setups
2438      - fix undefined mnc v-names in cd_code
2439      - add kpp to mnc output (both snapshot and timeave)
2440    o non-hydrostatic code
2441      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
2442        in calc_gw.F
2443      - defaults to viscAh
2444      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
2445        friction or Leith) in non-hydrostatic mode, as long as there is
2446        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
2447    o pkg/cost
2448      extend simple cost functions to treat time mean quantities
2449      (T,U,V) via cost_accumulate_state from cost_tile
2450    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
2451        be 2 times larger than the minimum size the advection scheme requires.
2452        now get a perfect conservation of salt in advect_cs test-exp (updated)
2453    o GGL90 (Gaspar's TKE mixed layer)
2454      - add horizontal diffusion of TKE, requires exchanges in
2455        do_fields_blocking_exchanges, horizontal diffusivity is zero by
2456        default. In OPA there is no horizontal diffusion of TKE but the
2457        mixing coefficients are computed from a horizontal average of TKE of
2458        6 points or so. I think that diffusion has a little more physical
2459        justification.
2460      - clean up ggl90_calc in the hope of reducing memory usage (this hope
2461        was in vain)
2462      - mask tke-variable in ggl90_init
2463    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
2464    o fix biharmonic diffusion on CS-grid.
2465    o more obcs stuff
2466      - added obcs_external_fields_load as an alternative to the EXF-pkg option
2467        for reading boundary values. This routine is called from
2468        obcs_prescribe_read
2469      - updated obcs_check
2470      - changed sponge layer relaxation parameter units for days to seconds
2471      - turned off sponge layer by default
2472      - changed argument list of OBCS_CALC to myTime+deltaTclock
2473      - fixed about 35 bugs in obcs_external_fields_load
2474    
2475    checkpoint55c_post
2476    o obcs stuff
2477      - new runtime flags useOBCSprescribe, useOBCSbalance
2478      - re-arranged obcs_calc
2479      - moved exf_getobcs to obcs_prescibe_read
2480        obcs_prescibe_read is called after ORLANSKI stuff
2481        and independent of it (executable can contain all).
2482      - updated obcs_check
2483      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
2484        These may be necessary only if tangential velocities are
2485        prescribed at OB, not sure, needs testing.
2486    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
2487      which simplifies the calls and passes the ifc check-bounds test
2488    
2489    checkpoint55b_post
2490    o add a 2D scalar, Z location, exchange_2 routine.
2491    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
2492      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
2493      affects advect_cs results (for the wrong reason): update output.txt
2494    o use a more standard discretization for biharmonic viscosity ;
2495     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
2496      affects results of dome set-up: update output.txt
2497    o fix gad_advection.F (CubedSphere part), back to version 1.23
2498    o fix bug in mom_vi_del2uv.F (CubedSphere part).
2499    
2500    checkpoint55a_post
2501    o merged code to
2502      * prescribe/read time-dependent open boundaries
2503        (works in conjunction with exf, cal)
2504      * sponge layer code for open boundaries
2505      * each boundary N/S/E/W now has its own CPP option
2506        (healthy for the adjoint)
2507    
2508    checkpoint55
2509    o up-to-date adjoint of previous breaks
2510      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
2511      - global_ocean_ebm: adjoint still needs fix (TLM ok)
2512      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
2513      - carbon: * remove tr1-related adjoint verification
2514                * add ptracer as control variable
2515    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
2516      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
2517    
2518    checkpoint54f_post
2519    o in verification/carbin/ remove experiment related to
2520      ALLOW_PASSIVE_TRACER (array tr1 etc)
2521      code_ad/ input_ad/ results_ad
2522    
2523    o add two new packages
2524      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
2525        + subject to optimization (memory)
2526      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
2527        + subject to reordering (many GOTOs in the original code)
2528        + so far opps is called for every (i,j) point, and then operates in
2529          the vertical; one may want to reorder the scheme in order operate in
2530          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
2531          fields)
2532    o overhaul of IO so that we now have flags for MDSIO and/or MNC
2533      - all verification tests compile and run with linux_ia32_g77
2534      - defaults are compatible with current input files--nothing
2535        should change if you were not previously using MNC
2536      - MNC output has been added in numerous places (eg. timeave)
2537        but there are still a few writes not yet do-able with MNC
2538        (this is in progress)
2539      - flags now allow for either/or/both use of MDSIO and MNC and
2540        documentation will soon follow
2541      - numerous small formatting cleanups for ProTeX
2542    o add version info (via BUILD_INFO.h) to MNC and stdout
2543    
2544    checkpoint54e_post
2545    o add two new packages
2546      - pp81 (Packanowski and Philander, 1981), Richardson number and
2547        stratification dependent mixing
2548      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2549      - these scheme operate in a similar manner as KPP (without ghat, of
2550        course), however there is only one diffusivity that is used for both
2551        temperature and salinity (and passive tracers)
2552    o add offline package
2553    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2554      provided by Stephanie Dutkiewicz
2555    o genmake2: add ability to search for C compilers and cleanup test output
2556      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
2557    
2558    checkpoint54d_post
2559    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
2560    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
2561      leading to additional shift by 5 days each year of integration
2562       (i.e. leading to considerable offset over the years)
2563    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
2564    o start with no AB and no initial filtering (staggerTimeStep):
2565      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
2566    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
2567      (external loading & cpl import/export stay in forward_step.F)
2568    o update coupling interface to work with new staggerTimeStep
2569    o change MDSIO ptracers_pickup.
2570    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2571    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2572    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2573    
2574    checkpoint54c_post
2575    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2576      this affects (truncation error) output.txt of test-exp:
2577       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2578    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2579    o change Qnet to always be the net heat flux, (+upward).
2580      affects (truncation error) output of natl_box exp.: updated
2581    o define the max number of passive tracers in PTRACERS_SIZE.h
2582    o start to test mnc routinely in exp0
2583    o add sea-ice loading (sIceLoad) as a new forcing field.
2584    
2585    checkpoint54b_post
2586    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2587       impressive on Altix and Opteron systems)
2588    o diagnostics can now write NetCDF files through the mnc package
2589    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2590    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2591    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2592      affects (truncation error) output of lab_sea & natl_box exp.: updated
2593    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2594    
2595    checkpoint54a_post
2596    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2597    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2598    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2599    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2600      + internal_wave (shift in writing cg2d_ini_res)
2601    checkpoint54a_pre
2602    
2603    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2604      - modified verification/lab_sea and natl_box_adjoint accordingly
2605    
2606    checkpoint54
2607    checkpoint53g_post
2608    o prepare splitting of thermodynamics: store convect.counter in common block
2609    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2610      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2611    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2612    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2613    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2614    o restore adjointability
2615    
2616    checkpoint53f_post
2617    o modifications that affect AIM experiment results (update output.txt):
2618      - no advection of S at top interface Nr (pkg/generic_advdiff)
2619      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2620    o AIM pkg:
2621      - include stability function into surf.Flux derivative relative to Tsurf
2622      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2623    
2624    checkpoint53e_post
2625    o merged cylindrical coord configuration
2626    o added rotating_tank experiment
2627    checkpoint53e_pre
2628    
2629    checkpoint53d_post
2630    o faulks upgraded: re-generate output.txt that have changed:
2631       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2632    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2633    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2634    o added Sadourny discretization of Coriolis
2635      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2636      - re-enabled use of omega3 (useAbsVorticity)
2637    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2638      vector-invariant equations
2639      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2640    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2641      hopefully without new bugs
2642      - still to do: biharmonic friction for non-hydrostatic w
2643    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2644    o regenerated output for global_ocean_ebm (using -ieee)
2645    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2646      of mom_common/
2647      - simple re-arrangement of instructions within computing loop
2648    checkpoint53d_pre
2649    
2650    checkpoint53c_post
2651    o new version of coupler for AIM+thSIce and Ocean models
2652     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2653     - land: change Evaporation of snow
2654     - aim with thSIce: fix bug in snow-precip.
2655    o changes to calc_gw.F
2656     - bug fix for w^2 term near the bottom boundary
2657     - (hopefully) improve the lateral slip boundary condtions for use with
2658        partial/looped cells
2659      - because the bug fix changes two verification experiments anyway (exp5
2660        and plume on slope), change the lateral boundary condition from half slip
2661        to the value of no_slip_sides
2662    o ebm package wasnt quite up to the parallel task. Fixed that.
2663    o Adjoint of EBM package + verification
2664      * TLM OK
2665      * ADM not sufficient accuracy yet (needs further testing)
2666    
2667    checkpoint53b_post
2668    o Commiting new energy balance model to repository
2669      * package is pkg/ebm
2670      * verif. is verification/global_ocean_ebm
2671      * references are in ebm_driver.F
2672    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2673    C        Global thermohaline circulation. Part I:
2674    C        Sensitivity to atmospheric moisture transport.
2675    C        J. Climate 12(1), 71-82
2676    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2677    C        Global thermohaline circulation. Part II:
2678    C        Sensitivity with interactive transport.
2679    C        J. Climate 12(1), 83-91
2680    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2681    C        Destabilization of the thermohaline circulation
2682    C        by atmospheric eddy transports.
2683    C        J. Climate 7(12), 1870-1882
2684    o Will need long integration testing.
2685    checkpoint53b_pre
2686    
2687    o created pkg/mom_common in preparation for variable viscosity code
2688    o renamed and split ini_mnc_io
2689    o pkg/land: only liquid water can diffuse or run-off
2690    o AIM using land: soil wetness availability account for snow
2691    o added printMapIncludesZeros to EEPARMS namelist
2692    
2693    checkpoint53a_post
2694    o restore TAMC compatiility for exf_constants.h
2695      (no usage of _d in .h)
2696    o Additional storing in KPP in an attempt to fix
2697      TAMC problem with adjoint of KPP code.
2698      (no success...)
2699      Identical code works fine with TAF.
2700    o Fixed verification/natl_box_adjoint experiments.
2701      Initial conditions for Experiments 4 and 5 are now
2702      set to "SEAICE_initialHEFF=0", which is more reasonable,
2703      and hence gives results closer to that of Experiment 2.
2704      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2705    
2706    checkpoint53
2707    o stable checkpoint with up to date adjoint
2708      TLM tests only run for 1st grdchk at the moment. Its unclear if
2709      this is a code problem or a problem with resetting code for g_
2710      variables that is being autogenerated wrong.
2711      Otherwise:
2712       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2713       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2714         are both still in chaos following their security messes.
2715    
2716    checkpoint52n_post
2717    o various build (mostly genmake2) changes including:
2718      - ability to build/run more easily within Cygwin and MacOS X
2719      - more complicated Makefiles with a stronger dependence on Gnu Make
2720    o pkg/seaice modifications
2721      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2722        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2723        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2724      - changed proxy for geostrophic velocity and updated
2725        verification/lab_sea/results/* accordingly
2726      - removed ADI dynamic solver from pkg/seaice
2727      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2728        they caused a segmentation fault under certain circumstances
2729      - removed unused field WATR
2730    o bug fix in exf-package:
2731      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2732         now reflect that.
2733    o small fixes in the cal-package:
2734      - set reference date to first of January for the 'model'-calendar
2735      - failing of cal_CheckDate in cal_FullDate now actually results in a
2736        warning
2737    o small modifications in exf-package to increase flexibility:
2738      - change climtempfreeze from a constant to a runtime parameter that
2739        is specified in data.exf_clim (default = -1.9)
2740      - introduce runtime parameter windstressmax (default = 2.0) that is
2741        specified in data.exf
2742    o fix in pkg/thsice:
2743      - update Evap (Tsf changes) to be consistent with Latent heat flux
2744      - maintain snow precipitation unchanged (even if Tsf >=0).
2745     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2746    
2747    checkpoint52m_post
2748    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2749      this does not change any of the results, because myIter=0 in swfrac always
2750      lead to jwtype=2 (the default anyway), but the call makes little sense
2751      as a default
2752    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2753    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2754      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2755    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2756    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2757    o extending useSingleCpuIO option to work with new exch2 I/O format
2758      - old-style, missing-tile I/O is still accessible by defining CPP
2759        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2760    o monitor package can write to NetCDF files and/or STDOUT
2761    o fix re-definition bug in MNC_GRID_INIT_ALL()
2762    o doc/api_reference added
2763      - a framework for building an API Reference Manual using all
2764        the "protex" comments embedded in the code
2765      - see pkg/generic_advdiff, pkg/mnc for examples
2766    o MNC:
2767      - make myThid the last argument for all subroutines
2768      - new default for the grid files: NO halos
2769      - add useMNC and other run-time flags
2770      - separate per-file-group handling of the unlimited dimension
2771      - early initialization of MNC w/ flags read at the eeboot stage
2772        and lookup tables set in initialize_fixed
2773      - write all MNC output to a freshly-created directory
2774  o thermodynamics sea-ice (thsice) is now tested with testreport.  o thermodynamics sea-ice (thsice) is now tested with testreport.
2775  o test exp. advect_cs: use the standard cs32 grid ; update output.  o test exp. advect_cs: use the standard cs32 grid ; update output.
2776    o Added functionality to grdchk:
2777      pick global i,j,k position (or nearest wet) where to perform check.
2778    
2779  checkpoint52l_post  checkpoint52l_post
2780  o new land formulation:  o new land formulation:

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