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revision 1.240 by edhill, Wed Jan 14 03:49:57 2004 UTC revision 1.1109 by jmc, Thu May 28 23:38:58 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 change tiling of global_ocean.cs32x15 (12 tiles, 32x16) and generate
8      new output (all 4 tests) using default rotationPeriod.
9    o Fix computations of L4rdt in mom_calc_visc.F
10    o eesupp:
11      new S/R ALL_PROC_DIE (like EEDIE, without irrelevant threads err msg):
12      should be called before a "stop" if we know that all process are going
13      to stop; if one Proc does call this S/R, will hang in MPI_FINALISE.
14    
15    checkpoint61o
16    o pkg/exch2: change check_depths to issue just a warning (instead of error+stop)
17    o model/src/ini_curvilinear_grid.F:
18       compute angleSin/CosC when they are not read from a file
19    o pkg/seaice:
20       add pseudo time stepping for LSOR
21    o pkg/exch2:
22       temporary fix for exch2_s3d_rx; update results of exp. hs94.cs-32x32x5.impIGW
23    o pkg/seaice:
24       Adding separate sea ice albedo, drag coefficients, and HO in Southern
25       Ocean from those in Arctic Ocean.  See *_south in SEAICE_PARAMS.h
26    o SingleCpuIO:
27       fix bug put before chkp61n (May 11), when more than 2 MPI cpu are used.
28    o pkg/seaice:
29       put exchanged variable in (local) common block for MPI+Multi-Threads
30       to work (necessary with exch1, and for now with exch2 too).
31    o verification: to get more experiments tested with mpi, mth and mpi+mth,
32      change tiling of:
33       aim.5l_Equatorial_Channel, aim.5l_LatLon, dome, exp4, global_ocean.90x40x15,
34       hs94.cs-32x32x5, MLAdjust, offline_exf_seaice & tutorial_plume_on_slope
35      update output of exp:
36       exp4, global_ocean.90x40x15(+.dwslp), MLAdjust(all 5),
37       tutorial_plume_on_slope and hs94.cs-32x32x5 (use default rotationPeriod)
38      + ideal_2D_ocean: use default rotation period + test Global_Sum_SINGLECPU
39                       (note: output.txt generated on faulks using only 1 tile)
40    o eesupp & mdsio (SingleCpuIO):
41     - remove MISSING_TILE_IO (from MDSIO_OPTIONS.h), replaced by run-time
42       parameter "W2_useE2ioLayOut" (read from file "data.exch2").
43       Note: was not effective for globalFile & useSingleCpuIO=F; now fixed.
44     - move MDSIO_SCPU.h (pkg/mdsio) to EEBUFF_SCPU.h (eesupp/inc).
45     - fix GLOBAL_SUM_SINGLECPU when using Exch2; re-use same buffers and same
46       gather/scatter S/R as with SingleCpuIO (=> 1 less 2D global RL array).
47    o pkg/exch2:
48     - new code to set-up W2-Exch2 topology (replace matlab-topology-generator):
49       read parameter file "data.exch2" if it exists; otherwise try default regular
50       cube without blank-tile; new header file "W2_EXCH2_SIZE.h";
51     - update matlab-topology-generator (exch2_setup_cs6_print.m) to be compatible
52       with new code (not to be used, just as a backup solution).
53     - add examples (e.g., for lat-lon-cap_120) of parameter file "data.exch2"
54       in utils/exch2/input.
55    
56    checkpoint61n
57    o eesupp & mdsio (SingleCpuIO):
58      - move mapping to global io-buffer inside gather_2d/scater_2d: this save
59        memory (1 less 2D global RL array); skip 1 buffer copy; and only send/
60        receive real*4 array (instead of real*8) to read/write 32.bit files.
61        (new template for gather_2d/scater_2d, new set of S/R MDS_PASS_R4,8toRL,S
62         and remove new mapping S/R)
63    o pkg/mdsio: in preparation for topology-generator within pkg/exch2:
64      - Change declaration of SingleCpuIO buffer, reduced to only 1 dim.:
65        xyBuffer_size, which is set to W2_ioBufferSize from W2_EXCH2_PARAMS.h
66        when using exch2. Add S/R to map global io-buffer to global model array.
67      - uses exch2_global_Nx,y instead of exch2_domain_nxt,nyt.
68    
69    checkpoint61m
70    o write_utils : change WRITE_1D_R8 to WRITE_1D_RL
71      and add 3 other S/R for other types (R4,R8,RS).
72      Change calls to WRITE_0D/1D_R[4,8,S,L] to match the type of argument.
73    o eesupp/inc/CPP_EEMACROS.h (EXCH & GLOBAL_SUM/MAX macros):
74     - ensure suffix (_R4,_R8,_RS,_RL) correspondance between macro and S/R ;
75     - reduce number of macro definitions (keep only those which are used);
76       can always call directly the corrresponding S/R if needed.
77     - everywhere in the code: change macros (EXCH & GLOBAL_SUM/MAX) suffix
78       _R4/_R8 to _RS/_RL when applied to _RS/_RL variable.
79     Fixed wrong type of arg in:
80       atm2d/put_ocnvars.F cheapaml/cheapaml.F ocn_compon_interf/ocn_apply_import.F
81       ctrl/ctrl_map_ini_ecco.F seaice/seaice_do_diags.F seaice/seaice_model.F
82     To fix: global_sum of var in common block is wrong (multi-threaded) in:
83       dic/dic_atmos.F ebm/ebm_area_t.F ebm/ebm_zonalmean.F sbo/sbo_calc.F
84     To fix: aim_v23/aim_do_co2.F (BARRIER & GLOBAL_SUM within bi,bj loops)
85    o adjustment.cs-32x32x1: test "blank tiles" when compiling with mpi; 2nd
86      "nlfs" mpi test is going to stop when checking for unconnected tile egdes.
87    o eesupp/src: new S/R to stop everyone when 1 (or more) Proc. find an error
88    o pkg/exch2: new S/R EXCH2_CHECK_DEPTHS to check that unconnected tile
89      edges are closed (zero depth); might happen with "blank tiles";
90      for now, disabled if using OBCS.
91    o tools/gemake2: delete modifs from March 27-29 2009 (with option "-mpi":
92      link *_mpi files from "MODS" dir) to return to a strait-forward behavior.
93    o move read_write.F to write_utils.F ; new parameter (maxLengthPrt1D)
94      to reduce length of 1.D array print in STDOUT.
95    o adjustment.cs-32x32x1: changed to oceanic test with 1 continent
96      + use 48 tiles (16x8): this will allow to test "blank tiles".
97    o start to test MPI + multi-threaded (change testreport to skip tests
98      where number of tiles do not match).
99    o genmake2: add option "-omp" to turn on Open-MP ;
100      passed to testreport (if using -mth) ; merge few (*+mth) optfiles.
101    o pkg/exch2 (+ utils/exch2): ignore blank tiles (instead of removing them)
102      and keep the original tile numbering. Note: compatible with old
103      W2_EXCH2_TOPOLOGY.h & w2_e2setup.F topology files.
104    
105    checkpoint61l
106    o Overlaps had been forgotten in calculating ijk keys : fixed
107    o fix cyrus makedepend for gcc 4.4
108    o experiment fizhi-cs-aqualev20:
109      switching to new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE)
110      and generate new output. Note: new output is much closer to the old
111      one (v1.8) generated with pgf77 -O2 on Mar 14 2007 than it is from
112      the previous one (v1.9) generated with pgf77 -O0 on Jun 13 2007.
113    o pkg/fizhi:
114     - change to avoid indices going deliberately over array-bounds
115     - remove unnecessary MPI stuff
116     - perpetual spring equinox with "#define FIZHI_USE_FIXED_DAY"
117     - new version of S/R GETPWHERE available with #define TRY_NEW_GETPWHERE:
118       does not go over array-bounds and therefore returns reliable output.
119     - in fizhi_driver.F & fizhi_turb.F, fix "get_alarm" calls:
120       this S/R has 4 output arguments, which are used inside "get_alarm";
121       when it is called with the same variable "ndum" in place of several
122       output arguments, this produces weird side effect inside "get_alarm"
123      (e.g., datein=dates(n) is overwritten by timein=times(n) since both
124       datein & timein, resp. 2nd and 3rd arg., are pointed to the same "ndum"
125       address) and produces error.
126    o tools/gemake2: (March 27-29 2009)
127      with option "-mpi": link *_mpi files from "MODS" dir (this is what
128      testreport does).
129    o lab_sea experiment: change from 2x1 tiles to 2x2 tiles and regenerate output
130    o pkg/seaice: fix bug in new version of S/R SEAICE_LSR.F:
131       update lab_sea.lsr & lab_sea.salt_plume results
132    o pkg/seaice:
133      Major overhaul of the LSOR solver: change discretization from original
134      finite differences to finite volume. The old routine is still in the
135      file seaice_lsr.F and can be turned on with the CPP-flag
136      SEAICE_OLD_AND_BAD_DISCRETIZATION
137      Along with this change, the discretization of the strain rates is changed.
138      The same flag turns on the old discretization in seaice_calc_strainrates.F
139      All verification experiments with seaice are affected (except for
140      seaice_exf_offline); global_ocean.cs32x15/input.icedyn recovers the old
141      results by setting the above flag.
142      Further changes involve changes in defaults:
143      - ALLOW_FLOODING is defined and turned on by default
144      - SEAICEadvSnow = .true. is now the default
145      - SEAICEadvSalt = .true. is now the default
146      - SEAICEadvAge  = .true. is now the default
147      - SEAICE_clipVelocities  = .false. is now the default
148                                         (as per J. Zhang's recommendation)
149      - B-grid, and thus not tested: SEAICE_TEST_ICE_STRESS_1/EXPLICIT_SSH_SLOPE
150        is defined, SEAICE_TEST_ICE_STRESS_1 is renamed into SEAICE_BICE_STRESS
151      - seaice_growth: replace computation of UG by a simple copy from wspeed
152    
153    checkpoint61k
154    o pkg/seaice: a few bug fixes mostly concerning the metric terms:
155      seaice_lsr: fixed a few metric terms,
156                  affects lab_sea.lsr, lab_sea.salt_plume, seaice_obcs
157                  add more debugging diagnostics
158      seaice_evp: removed superfluous many metric terms of FV discretization
159                  of stress divergence
160                  affects lab_sea, lab_sea.hb87
161      seaice_ocean_stress: removed superfluous many metric terms of FV discretization
162                  of stress divergence for non-evp solver
163                  (this part is not tested anywhere)
164      seaice_calc_strainrates: fixed a bug in no-slip boundary conditions,
165                  they were effectively only half slip
166                  affects lab_sea.hb87
167      updated all relevant verification experiments (except lab_sea//output_adm.txt
168        which was left over, but fails at level 7 & 6)
169    
170    checkpoint61j
171    o pkg/seaice: turn a few hard wired parameters into run time parameters
172    o pkg/seaice/exf/monitor: turn netcdf coordinate variable T into model
173      time in seconds as promised by the usints in seaice_monitor and exf_monitor
174    o pkg/mnc: fix the coordinate variables for multi-tile curvi-linear grids
175      that are not cubed-sphere grids
176    o pkg/seaice: fix a bug for the rare case of SEAICE_VECTORIZE_LSR
177    o pkg/ctrl:
178      fix bug in ctrl_depth_ini.F (EXCH_XYZ was applied to 2-D field xx_r_low)
179    o non-hydrostatic (calc_gw.F):
180      fix viscA4 on CS-grid + fix diagnostics: Wm_Diss & Wm_Advec
181      update output of exp. global_ocean.cs32x15.viscA4
182    o remove backward compatibility for thetaMin,phiMin
183      (replaced by xgOrigin,ygOrigin on Jan 27, 2009)
184    o pkg/exf: fix a serious bug in exf_set_uv.F: do a rotation of the
185      interpolated wind field not only for curvilineargrid=.true., but also
186      for a rotated grid (rotateGrid=.true.)
187    o pkg/exf: add capability to bypass interpolation for runoff
188      by setting yet another CPP-flag
189    o eesupp/src, B-grid exchange:
190      add simple (6 tiles, non MPI) CS exch + standard interface S/R.
191    o autodiff
192      new CPP option ALLOW_TAMC_SINGLEPREC_COMLEV
193      allows to switch to single-prec common blocks;
194      corresponding switch occurs in tamc.h, integer isbyte
195      TAF store directivs "byte" and "kind" seem equivalent;
196      Most tamc.h have been updated correspondingly.
197    
198    checkpoint61i
199    o autodiff:
200      fix autodiff_sore/_restore indices for obcs
201      (spotted by I. Hoteit, M. Mazloff)
202    o pkg/autodiff, pkg/ctrl:
203      Add flag to reduce all tapelev I/O to single-prec.
204      In data.ctrl set
205        doSinglePrecTapelev = .TRUE.
206    o model/src/ini_curvilinear_grid.F, new grid-file format without EXCH2:
207      check in hack for SX8 compiler (for dxV, dyU); remove it afterwards.
208    o pkg/shelfice: fix bug with SHELFICEconserve flag, prepare for
209      real fresh water flux (not yet)
210    o pkg/mdsio & rw:
211     - add argument & option to S/R MDS_WRITEVEC_LOC (avoid Open/Close & write-meta)
212     - add simple interface S/R to MDS_WRITEVEC_LOC in pkg/rw: WRITE_GLVEC_RX.
213    o pkg/flt:
214     - replace FLT_INIT by 3-steps standard initialization S/R: readparms,
215       init_fixed & ini_varia.
216     - clean-up & simplify linear interpolation S/R:
217       move flt_bilinear.F -> flt_interp_linear.F ; add arg. myThid.
218     - fix some indices (mainly vertical index) ; add IMPLICIT NONE.
219     - more efficient I/O, using new options of MDS_WRITEVEC_LOC S/R.
220     - add vert. coordinate & horiz. indices to output files.
221     - change vertical position in initial condition, from index to depth [m].
222     - store horizontal (decimal) indices i,j in common block (instead of coord. x,y)
223       (easier to get to a curvilinear grid) ; delX,delY no longer used.
224    o pkg/ggl90: a few modifications:
225     - fix bottom boundary condition, and interpolation of KappaE
226       near top and bottom
227     - use same set of viscosity/diffusivity for TKE/momnetum/tracer
228     - add smoothing option as in Blanke and Delecluse (1993) (--> ALLOW_GGL90_SMOOTH)
229     - add a few options for mixing-length upper limit (--> mxlMaxFlag)  
230    o rename thetaMin,phiMin -> xgOrigin,ygOrigin
231      (maintain temporary backward compatibility, until next checkpoint)
232    
233    checkpoint61h
234    o pkg/diagnostics with "periodic averaging diagnostics":
235      fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
236    o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
237    o pkg/obcs: fix loop ranges for balancing code
238    o pkg/flt:
239     - improve criteria for finding which tile owns a float.
240     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
241    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
242      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
243      with ocean biogeo)
244    o pkg/flt:
245     - do some cleaning and fix the restart ;
246     - add output.txt in flt_example/results to get this pkg tested.
247    o genmake2: add an EXTENDED_SRC option and flag.
248       for now, cannot be turned on on command line (only through genmake_local)
249    o pkg/mdsio: read/write vector:
250     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
251     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
252       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
253     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
254      (drop to 4 digits matching for grad). But this test does not look very
255      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
256    
257    checkpoint61g
258    o pkg/flt:
259      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
260       + make OPTIONS file more standard.
261      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
262      - fix _BYTESWAPIO CPP-Flag
263      - standard reading of file-parameter "data.flt"
264      - fix argument list of S/R FLT_RESTART
265      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
266    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
267    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
268      a still unfixed compiler/optimization bug
269    
270    checkpoint61f
271    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
272      update results of global_ocean.cs32x15.icedyn test.
273    o move getcon.F from model/src to pkg/fizhi.
274    o pkg/exf: add parameter for extrapolation of temp up to the surface
275       and option to prevent negative evap (in bulk_largeyeager04 only).
276    o Prather Advection scheme: fix tracer conservation for divergent flow
277      (e.g., when using NonLin Free-Surface).
278    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
279    o gmredi (Visbeck-variable-K):
280     - add more parameters to Visbeck-variable-K.
281     - use a 5 points average for dSigmaR in Visbeck-K calculation
282       (more "homogenous": same stencil and same weights as in dSigmaH)
283     - update output of ideal_2D_oce experiment.
284    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
285      (#undef REAL4_IS_SLOW)
286     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
287       coordinate variable
288     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
289       (surface forcing fields), removes some of the functionality
290     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
291     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
292       probably not all: copy _RS surface flux fields to RL field before
293       calling DIAGNOSTICS_FILL
294     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
295       real*4 (CALL EXCH_*_RS) versions.
296     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
297       (generate new output).
298    
299    checkpoint61e
300    o gmredi (Visbeck-variable-K):
301      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
302      - change computation of Visbeck-K where Slope > Smax :        
303        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
304        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
305    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
306      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
307    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
308    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
309      does not become too large (to avoid precision problems in implicit-diffusion
310      solver); update ideal_2D_oce output.
311    o pkg ggl90:
312      - in ggl90_cal.F: compute only one set of visc/diff, used to
313        step forward TKE/T/S/momentum
314      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
315        have Prandlt =1)
316    o gmredi (fm07):
317      - add lower limit on Transition layer thickness + lower limit on 1/lambda
318      - allow to set few more params from data.gmredi
319    o pkg ggl90:
320          - add missing sqrt(2) factor in computation of mixing length
321            scale in ggl90_calc.F
322            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
323    
324    checkpoint61d
325    o adjoint modifs
326      - adapt to new field rhoInSitu
327      - allow to revert from StoreDynVars2D, StoreDynVars3D
328        to individual fields
329        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
330    o store 3-D (in-situ) density in commom block (DYNVARS.h)
331     - save 1 rho computation.
332     - no longer modify T & S inland when using down_slope pkg.
333    o gad_som : allow to switch to SOM advection for T & S without corresponding
334      pickup files (using new S/R: MDS_CHECK4FILE).
335    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
336      (for useSingleCpuIO to work in multi-threaded)
337    o pkg/shelfice:
338     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
339       with SHELFICEtopoFile in data.shelfice
340     - move code for reading ice shelf topography and modifying hFacC into separate
341       subroutines of the shelfice package
342     - separate initialisation of "fixed" and "variable" variables
343     - kTopC is not (yet) replaced by kSurfC, although this is possible
344    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
345    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
346      and rename:
347      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
348      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
349    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
350    
351    checkpoint61c
352    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
353      to add mass source/sink of fluid in the interior (3-D generalisation
354      of oceanic real-fresh water flux).
355    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
356    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
357    o new pkg: down_slope
358      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
359      - presently, modify T & S inland (dwnslp_calc_rho.F).
360        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
361      - implementation for ocean in P-coords not tested.
362      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
363    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
364      (to facilitate conversion of oceanic pkg to p-coordinate).
365    o change FIND_RHO to FIND_RHO_2D :
366      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
367    o new pkg: cheapaml
368    
369    checkpoint61b
370    o exch2:
371      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
372      - no longer depend on the order sequence (N,S,E,W).
373      - 3rd exchange no longer needed (tested with 24 tiles).
374      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
375      - exch_UV_A-grid readily available (but not yet tested).
376      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
377      (both are no longer needed) in exch_uv: no effect in forward run; but
378       get truncation error differences with adjoint exch.
379    o exch2:
380     - change index-bounds storage (moved from target to local tile,
381       more intuitive this way) ; rename/remove some variables.
382     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
383    
384    checkpoint61a
385    o exch2/matlab-topology-generator:
386      fix bug in index bounds for N-S internal exchange (hard to tell if this
387      had any effect on the solution).
388    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
389      is exceeded
390    o testreport: modify syntax of awk, so that it works also with
391      awk, and not only with nawk and gawk
392    
393    checkpoint61
394    o autodiff
395      Change default for TAF usage by removing argument '-nonew_arg'
396      This changes TAF subroutine argument list (ordering of active var.)
397      Omission of this flag leads to incompatibility w.r.t. TAMC
398      To restore TAMC-compatibility, need following modifs:
399      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
400      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
401      Tested TAF version is 1.9.22
402      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
403    
404    checkpoint60
405    --->>> This is the last checkpoint for which generating the adjoint
406    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
407    --->>> by default.
408    --->>> Future checkpoints will ommit this flag by default.
409    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
410    o pkg/grdchk: Add gradient check to etan0 perturbations.
411    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
412    o pkg/autodiff: more flexibility in zeroadj.
413      model/src: modifying do_oceanic_phys.F accordingly.
414    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
415    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
416      special setup of gmredi for which the adjoint is stable
417      enough for parameter optimization.
418    o bridging the gap between eddy stress and GM.
419      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
420          along with a change in CPP option (now ALLOW_EDDYPSI).
421      -> when using GM w/ GM_AdvForm:
422          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
423          is applied either in the tracer Eq. or in momentum Eq.
424          depending on data.gmredi (intro. GM_InMomAsStress).
425      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
426      The key modifications are in model/src/taueddy_external_forcing.F
427      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
428    
429    checkpoint59r
430    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
431      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
432      fix option to read coriolis(@ cell-corner) from files with CS-grid.
433    o pkg/mnc: add some attributes to standard 1D-coordinate variables
434    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
435      mass points, when using mnc for output
436      - add runtime parameter (missing_value, missing_value_int) to override
437        default (which is the value of getcon('UNDEF'))
438    o pkg/mnc: prepare mnc for the actual use of missing values with the
439      diagnostics package: small fix in mnc_cw_readwrite.template and more
440      initialisation of never used fields
441      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
442      versions
443    o pkg/thsice/thsice_ini_vars.F added default initial values so that
444      thermodynamics sea ice solver does not blow up when some initial fields
445      are missing.
446    o move from external_forcing_surf.F to ini_forcing.F
447      the p-coord. hack consisting in using pLoad to set phi0surf ;
448      update output of tutorial_global_oce_in_p (affected @ truncation level).
449    o Freshen up a bit hs94.1x64x5, notably:
450      remove rotationPeriod and tRef=5*0. (adjoint only), and add
451      exactConserv=.TRUE.
452    o pkg/generic_advdiff:
453      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
454      applies to files where Temperature & Salinity 2nd Order moments are used.
455    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
456      this uses a dynamically allocated internal state data structure
457      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
458      and requires a fortran 90 compiler
459    
460    checkpoint59q
461    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
462       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
463    o Refresh tutorial_global_oce_biogeo, notably:
464      - change bathymetry (put back seamounts in ACC, use hFacs)
465      - change EOS (POLY3 --> JMD95Z)
466      - use Bryan-Lewis vertical diffusivity
467      - use multidimensional advection
468      - remove old virtual virtual in dic pkg, now done through ptracer pkg
469      - change a couple of parameters in dic pkg
470    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
471    o pkg/obcs: change default to OBCSfixTopo = .true.,
472      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
473      - replace "debugMode" with "debugLevel .GE. debLevB"
474    o implementation of TAF directives for gchem,cfc,dic
475    o remove "exp5" (replaced by tutorial_deep_convection).
476    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
477      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
478      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
479      --> changes results in exp4, seaice_obcs
480    o tutorial_deep_convection :
481      update the set-up and increase resolution and domain size ; start
482      from pseudo initial conditions = output at t=120mn in order to see
483      something happening when running testreport.
484    o pkg/seaice: add os7mp as an advection scheme
485                  add check for advection schemes
486                  add a flag for restoring T and S underneath sea ice
487    o pkg/my82: add netcdf-support and diagnostics
488    o thsice pkg:
489      - Now hsMax limits snow height by turning it into ice following
490        flooding scheme (and now conserving energy)
491      - Slight rewriting of the formula in thsice_calc_thick.F
492      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
493      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
494    
495    checkpoint59p
496    o gchem / dic / cfc :
497      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
498      - add new parameter files: "data.dic" & "data.cfc" ;
499      - various re-arrangement in initialisation & header file ;
500      - fix tutorial_global_oce_biogeo for multi-threaded test.
501    o pkg/dic: test for "pickup_dic" file when restarting ;
502      if no pickup-file, can restart with a re-initialised pH (same as it did
503      before) providing pickupStrictlyMatch is set to False.
504    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
505      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
506    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
507      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
508    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
509     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
510       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
511    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
512       scheme to use for vorticty-term ;
513     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
514       (with default selectVortScheme, return to original discretisation)
515     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
516    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
517    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
518      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
519      also fix diagnostics VISCAHW & VISCA4W.
520    
521    checkpoint59o
522    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
523    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
524      move a few statemens out the main loop into separate loops
525    o pkg/shelfice:
526      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
527        (kg/m^2/s), does not break tests, because in verification/isomip,
528        rhoConstFresh=rhoConst (by accident)
529      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
530      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
531        new file model/src/seawater.F, so that they are available for all pkgs.
532      - convert potential temperature into in-situ temperature. This changes the
533        isomip tests => update tests
534    o add a flag writePickupAtEnd (default=true) to be able to suppress
535      writing a pickup at the last timestep
536    o tools/mpack-1.6 :
537      - disable automake (not working) and autoconf (not needed).
538      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
539        also cleaner with much less compilation warnings.
540    o pkg/profiles:
541      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
542      (for "less than 32 characters name" compiler requirement)
543    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
544      conditions that have a different sampling frequency than S/T/U/V obcs
545    o pkg/diagnostics (stats-diags):
546      - fix global Min/Max in case 1 processor get only empty tiles
547    o genmake2: replace (4 times)
548         make genmake_tc_1.o >> genmake_warnings 2>&1
549      with
550         COMM="$CC $CFLAGS -c genmake_tc_1.c"
551         echo $COMM >> genmake_warnings
552         $COMM >> genmake_warnings 2>&1
553      to make genmake2 always see the value of CC as specified in the optfile.
554    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
555      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
556      - modify verification advect_cs test to test SOM-advection on CS-grid.
557    o pkg/ctrl:
558      - Rewrite of ctrl_map_ini_ecco.F,
559        introducing a generic routine (ctrl_map_ini_gen.F).
560      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
561    
562    checkpoint59n
563    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
564      number in dedicate array "hdiag":
565      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
566        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
567      - many small changes (integer format) for large number of diagnostics
568      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
569        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
570    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
571      usingSphericalGrid, this allows to define the rotated grid coordinates
572      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
573      geographical coordinates according to the inverse of the rotation defined
574      by the Euler angles, so that Coriolis parameter and online-interpolation by
575      exf works with the geographical coordinates on XC/YC/XG/YG.
576      Naturally, this feature does not work with all packages, so some
577      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
578      profiles), because there the coordinates are assumed to be regular
579      spherical grid coordinates.
580    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
581      - introduce isopycnal diffusion coefficient control.
582    o tools/adjoint_options:
583      - additional control vector components.
584    o pkg/mnc: have mnc create marginally meaning full coordinate variables
585      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
586    o pkg/mypackage:
587      - add example of read/write pickup for state-var ;
588      - add entry points to the main code for state-vars diags & write-pickup.
589    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
590      transitions for useExfYearlyFields
591      - add new subroutine that determines the file to read from for
592        use*YearlyFields = .TRUE. and .FALSE.
593      - add a verification experiment to global_with_exf that tests
594        useExfYearlyFields with USE_EXF_INTERPOLATION defined
595    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
596      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
597      subroutines (which could be generated from a template, because they are
598      almost identical), for now they are included in obcs_prescribe_read.F for
599      simplicity
600    o pkg/exf:
601      - add a little more diagnostic to exf_interp_read (in analogy to
602        mds_read_field, can be turned off with debugLevel < debugLevA=1)
603      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
604        ugly but fast by unrolling short inner loops, inserting a unroll=8
605        directive in routine lagran, and splitting a loop and making do while the
606        outermost loop (the latter requires the intoduction of index arrays)
607    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
608    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
609      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
610    o verification/seaice_obcs: updated for restart test and latest options
611    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
612      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
613      for now this is only available for the C-grid code and also within
614      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
615    
616    checkpoint59m
617    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
618      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
619    o gad_som : fix flux output (& diagnostics) to have same units as other  
620      advection scheme fluxes (was previously multiplied by deltaT).  
621    o added verification/seaice_obcs both to test seaice open boundaries
622      and to provide an example matlab scrpt for generating them
623    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
624    o pkg/salt_plume: clean up salt_plume_frac.F to
625      remove redundancy in PlumeMethod 1 and 4
626    o pkg/kpp: added saltplume diagnostics
627    o pkg/obcs and pkg/seaice:
628      - do not set uice and vice to zero when OB*icefile are unspecified
629      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
630      - moved seaice tracer obcs after call to seaice_growth
631    o pkg/salt_plume: added various options for salt plume depth
632      criterion and for vertical distribution of the salt
633    
634    checkpoint59l
635    o pkg/ptracers: new version of ptracers pickup:
636      read meta file and write only fields which are needed to restart.
637      ( same logic as main pickup file ; also using pickupStrictlyMatch )
638    o pkg/seaice:
639      - add timescale for melting due to warm mixed layer as a means of
640        setting SEAICE_availHeatFrac more conveniently
641      - add a CPP-flag/runtime parameter check for flooding algorithm
642      - reformulated availHeat in seaice_growth.F to be independent of AREA
643    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
644      unit changes
645    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
646    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
647      SX vector computer.
648    o pkg/seaice:
649      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
650        seaice forcing fields can now be read only through pkg/exf
651      - removed some unused halos
652    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
653    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
654      or U/VICE from U/VWIND before computing U/VSTRESS
655    
656    checkpoint59k
657    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
658      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
659    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
660      all experiments pass when compile with un-initialised var. checking option.
661    o added pkg/salt_plume
662    o script to test restart (for now, in MITgcm_contrib/jmc_script)
663    o pkg/seaice: new read/write pickup version.
664      read meta file and write only fields which are needed to restart.
665      ( same logic as main pickup file ; also using pickupStrictlyMatch )
666    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
667    o lab_sea.hb87: modify the domain & update output.hb87.txt :
668      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
669      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
670      process. Fixed here by closing the domain at the Northern boundary.
671    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
672    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
673      a set of consecutive levels in/from a 3-D array.
674    o pkg/ptracers:
675      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
676      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
677    
678    checkpoint59j
679    o in pkgs: dic, obcs, offline, rbcs:
680      standard way to compute coeff. for time interpolation between 2 time reccords
681      which retains full precision (& make results less dependent on compiler).
682      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
683    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
684      packages instead of reading ice cover and wind speed separately
685    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
686     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
687      to allow to compile customized code before the update)
688    o cleaning-up:
689      - fix CPP instruction syntax in pkg/obcs
690      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
691        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
692      - fix some threads issue in IO parts.
693    o pkg/dic:
694      - add tons of "_d 0" (--> much better testreports !)
695       and then update outputs of tutorial_global_oce_biogeo
696    o pkg/mom_fluxform:
697      add a special version of momentum advection intended to conserve momentum
698      next to a bathymetry step or a coastline edge. (default = off = #undef)
699    o new read/write pickup version:
700      - for now, only implemented for main (mdsio) pickup file.
701      - write out only what is needed to restart; merge pickup_nh , pickup_ph
702        and main pickup together.
703      - read meta file; read only what is needed to restart; stop if a field
704        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
705        if it make sense (even if the restart is not perfect).
706      - if no meta file, assume that pickup to read corresponds exactly to
707        a pickup that would currently be written.
708      - read pickup written in the old format (until checkpoint59i) if it
709        recognizes an old meta file (no field-list).
710      - add a meta file in exp. which starts from a pickup: 2 cases:
711        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
712         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
713        b) a meta file describing the content of the associated pickup file
714         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
715    o pkg/mdsio & pkg/rw:
716      - new routine to read a meta file ; new set of routine to read
717        Multiple-fields file (with meta file).
718    o added open boundary conditions capability for seaice
719        HSNOW, HSALT, UICE, and VICE
720    
721    checkpoint59i
722    o adjoint:
723      * fix multiDimAdvection adjoint
724        (partial recomputation problem by TAF for fVerT(:,:,kDown)
725        and comlev1 size definition (maxpass vs. max. number of tracers)
726      * verification/global_ocean.90x45x15 adjoint now tests
727        NLFS and multiDimAdvection using DST3 (=30)
728      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
729    o pkg/kpp: add "_d 0" to real constant (if missing);
730      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
731      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
732    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
733      for internal parameters related to restart process (formerly from PARAMS.h)
734      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
735    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
736      as argument. (only atm2d & obcs write_pickup have not yet been updated)
737    o pkg/monitor:
738      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
739      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
740      - account for deep Atmosphere factor and density factor (anelastic)
741    o added open boundary conditions capability for seaice HEFF and AREA
742    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
743      thermodynamics
744      - requires a little reorganization, which affects the testreport results
745        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
746        so that now the conservative form is tested
747      - add a few comments
748    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
749    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
750    o add new diagnostics to seaice: advective, diffusive fluxes (only for
751      multidim-advection, for scheme 2 they are not filled) and transports,
752      thermodynamic growth rates
753    o change units of EmPmR (inside the code, + within coupling interface)
754      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
755      Affects results @ truncation level (cg2d match) and update output of
756       experiments: lab_sea(6), global_ocean.90x40x15(10),
757      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
758      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
759      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
760      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
761    
762    checkpoint59h
763    o pkg/exf:
764      - improve vectorization by moving if-statement out of loops in
765        exf_mapfields, exf_radiation
766      - exf_bulkformulae.F: introduce 2D fields and vectorize code
767    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
768    o testreport:
769      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
770        monitor & update offline_exf_seaice exp. output.
771      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
772    o pkg/seaice:
773      - bug fix in the evp solver: boundary conditions were affected be
774        masking of zMax/zMin (changes results)
775      - minor bug fix in boundary conditions in seaice_calc_strainrates
776        (changes results for no_slip)
777      - seaice_lsr.F: make interpolation of eta dependent on boundaries
778      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
779      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
780        stress formulation and no-slip boundary conditions
781    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
782      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
783    o pkg/seaice: a first HSALT time stepping equation has been checked in
784    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
785      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
786      without requiring DO-IF statements
787    o pkg/thsice:
788      use continuous power-law function for partition of energy between lateral
789      melting/freezing and thinning/thickening ; old code using step function
790      still available with #undef THSICE_FRACEN_POWERLAW
791      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
792    o testreport: change AD testing : check against results/output_adm.txt
793      using same scripts as for forward test.
794    
795    checkpoint59g
796    o adjoint testing: in preparation for changing testreport:
797      - output format: cost and grad written on separated lines
798      - ad output results in directory "results" (instead of "results_ad")
799    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
800    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
801    o pkg/ecco: allow user defined cost function contributions
802    o testreport:
803      Allow to choose (per experiment) the list of tested output variables
804       and the main variable (used to issue a pass/FAIL ) ;
805      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
806      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
807      Also modify printing of summary:
808       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
809       b) echo the list of tested variables in the individual summary.txt of
810          each experiment.
811    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
812      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
813      (but still depend on the tile decompostion of the domain).
814    o pkg/seaice: change a discretization detail to make the B-grid code
815      "more symmetric". This change is likely to remove all "ridges/leads" that
816      where quasi-aligned with the grid in B-grid solutions. It may also be
817      the solution to the stress coupling issues with the B-grid.
818    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
819      remove .cvsignore from input dir. (since testreport no longer run here).
820    o pkg/thsice:
821     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
822     - fix reshaping of sea-ice just after advection:
823       melt all the ice only if ice-volume is too small.
824     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
825       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
826     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
827    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
828      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
829    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
830      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
831      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
832      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
833      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
834      -> update output.txt
835    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
836     this affects truncation error: -> update output.txt of exp:
837      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
838      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
839    
840    checkpoint59f
841    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
842    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
843      a bounded range (in forward mode)
844    o pkg/ecco, ctrl, autodiff and mom_common:
845     internal parameter controls, completements of implementations
846    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
847    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
848      (not seem any difference in testing results).
849    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
850       at face corners.
851    o pkg/generic_advdiff:
852     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
853      loop range indices for computing vertical advection tendency
854      and do the calculation in the interior only (no overlap) ;
855      for now, only implemented for SOM advection (to save CPU time).
856     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
857    o exch2 adjoint
858      First set of changes:
859      - add exch2 hand-written adjoint templates
860      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
861        This will require cleanup in pkg/autodiff/*.F
862        (changed routines currently kept separate in verif. code/)
863      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
864        that used to hide exch2 or cubed-sphere specific code
865        (commented via 'cph-exch2')
866    o pkg/seaice
867      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
868    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
869       output of global_ocean.cs32x15.thsice .
870    
871    checkpoint59e
872    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
873      for B-grid vector (not yet tested) and C-grid vector (<- only used
874      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
875    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
876      (#ifdef ALLOW_SALT_PLUME)
877    o gather_2d/scatter_2d: removed halo regions
878    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
879      scheme and the corresponding test case (under front_relax dir). For now,
880      only available with Skew-flux form and not yet tested in realistic set-up.
881      adjoint: store directives updated, but gradient checks deteriorated,
882      so maybe GM/Redi adjoint is now broken.
883    o seaice adjoint
884      * add AREA, HEFF, HSNOW as control variable
885        (should not change lab_sea results)
886      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
887    o pkg/seaice:
888      * added computation of saltFlux in seaice_growth;
889        For time being, sea ice salinity is assumed constant
890        contribution of snow flooding to freshening of sea ice is neglected.
891        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
892        defaults to 0.0 in order to maintain backward compatibility.
893        Typical values for SEAICE_salinity are 4 to 10 g/kg.
894      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
895      * added SEAICE_availHeatFrac, which specifies fraction of surface level
896        heat content used to melt or grow ice
897      * commented out cap of HICE: it helps keep ice thinner
898      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
899      * applied OBCS T/S mask to HEFFM sea ice mask
900    
901    checkpoint59d
902    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
903     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
904     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
905    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
906     and change default value of parameter "GM_Small_Number";
907     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
908       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
909       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
910    o pkg/ecco: cost function when applying pkg/smooth to controls
911    o pkg/ctrl: add forcingPrecond run time parameter
912    o pkg/seaice:
913     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
914     - fix bug in metric terms of u-equation in LSR solver (implicit part),
915       changes verification/lab_sea
916     - rearrange implicit part of u-equation in LSR solver to make it easier to
917       read, understand, and debug. This causes changes at the truncation level.
918     - fix (serious) bug in the boundary conditions (sign error in the implicit
919       part) of the LSR solver. Changes all LSR results.
920     - fixed problem with HSNOW initialization to avoid thick snow when AREA
921       is initilized with small values - does not change lab_sea results.
922     - added HsnowFile initialization capability
923    o pkg/smooth: addition to model/src and pkg/ctrl so allow
924     initialization of pkg/smooth and application to control vector
925    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
926    o dependencies: pkg/profiles requires pkg/cal
927    o pkg/profiles:
928     - added option ALLOW_PROFILES_GENERICGRID
929         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
930         that interpolation information (grid points and coefficients) is provided
931         within the netcdf input files.
932         -> sample matlab scripts can be found in MITgcm_contrib/gael
933         that allow you to prepare netcdf input files.
934     - also modified: cleaner include statements, cleaner error print statements,
935       cleaner stops when error, and more tests of the netcdf input files consistency.
936    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
937    o pkg/seaice:
938     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
939       requires a new routine: seaice_diagnostics_fill.F
940     - make sure that seaice does not move if not forced (pressure replacement
941       method, Hibler and Ip, 1995), changes results
942     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
943     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
944       It is turned off by default (=-1.), because it changes the results.
945     - make it possible to read AREA from a file, too.
946    
947    checkpoint59c
948    o add S/R and diagnostics for oceanic mixed-layer depth
949    o move GMRedi call after all vertical mixing schemes (including KPP)
950    o pkg/thsice:
951     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
952      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
953    o pkg/obcs:
954     - bug fix for balance code
955    o pkg/seaice:
956      - allow values of SEAICE_elasticParm > 1
957      - add new parameter SEAICE_evpTauRelax as an alternative
958        to SEAICE_elasticParm
959      - make lsr boundary conditions free slip (by default), changes result
960      - add code for no slip boundary conditions for lsr
961      - set minimum of zeta to zero (and not 4e8) (changes results)
962      - add a cap on AREA after advecting AREA if seaice_growth is not called
963    o change calculation of Visbeck K:
964      - no longer depend on tapering scheme; instead, compute slope (limited
965        by GM_maxSlope). this is equivalent to what was comuted before with
966        clipping or linear tappering.
967      - fix vertical averaging (wrong by 1/2 level)
968      - leave the old version (but will not be maintained) within
969        #ifdef OLD_VISBECK_CALC / #endif
970      - update output of exp. ideal_2D_oce
971    o change error catch in calc_r_star to improve vectorization
972    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
973      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
974    o adjoint:
975      Re-organized adjoint checkpointing according to Matt Mazloff
976      (but with modifs/completions/cleanups)
977      Storing is now bundled into large arrays to optimized I/O
978      (and second step in cleanup of the_main_loop)
979    
980    checkpoint59b
981    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
982      - export/import (between ocean & coupler) fields needed for ocean DIC.
983    o pkg/seaice:
984      - get rid of three more exchanges seaice_calc_viscosities (required
985        different loop boundaries in seaice_lsr and seaice_ocean_stress)
986      - bug fix in seaice_ocean_stress (update of lab_sea required)
987      - reduce loop boundaries to necessary minimum also in seaice_evp
988      - go back to the old way of computing deltaC/Z as the adjoint likes that
989        better
990    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
991      passive tracer to an Age Tracer) + update output.txt
992    o pkg/exf:
993      - implement A-grid / C-grid selection for wind-stress input files.
994      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
995      for now, in exf_bulk_largeyeager04.F only :
996      - change implementation for case where windspeed + 2. components wind-stress
997        are read-in. AND use rhoConstFresh to convert evap.
998    o pkg/seaice:
999      - use correct EXCH_UV for wind-forcing (on A-grid).
1000      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
1001        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
1002    o pkg/exf:
1003      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
1004      EXF_INTERPOLATION:
1005      - merge global_with_exf/code version of exf_interp_read.F
1006        to the main code ;
1007      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
1008        reading the file ; Important: This options needs to be defined to recover
1009        previous code.
1010        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
1011      - no longer loose real*8 precision along the way when using exf_iprec=64.
1012    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
1013      - change discretisation of evp-solver in order to avoid another exchange
1014        (changes lab_sea) and clean up a little
1015      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
1016        help the adjoint (this also changes the results slightly)
1017      - add a few "_d 0" where they had been missing in seaice_evp.F
1018      - cleaning up: remove unused seaice_calc_rhs.F
1019    o pkg/exf: some cleaning-up:
1020      - change various "constants" into runtime parameters
1021      - cleaned-up Large&Yeager04 routine which should eventually
1022        replace exf_bulkformulae.F (changed names of S/R and CPP)
1023        and merged various ALLOW_ATM_WIND options
1024     only used with thsice pkg (in thsice_get_exf.F):
1025      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
1026        which are used when useStabilityFct_overIce=TRUE (= the default)
1027      - change default values of ice & snow emissivity and scale downward LW
1028        by ice & snow emissivity.
1029    o pkg/thsice:
1030     fix few little problems, in thsice_calc_thickn.F:
1031      - growth vertically (and not laterally) if iceFrac == iceMaskMax
1032      - melt only laterally if hIce < hThinIce (as the comments say)
1033      and in thsice_extend.F:
1034      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
1035      - start to form ice as soon as the minimum ice-volume is reachable.
1036     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
1037      and cpl_aim+ocn
1038    o pkg/kpp
1039     - move computation of surface related input fields to KPP into a new
1040       subroutine kpp_forcing_surf.F
1041     - remove wrong (within bi,bj loops) EXCH calls.
1042     - little cleaning (add argument myThid in last position, cvs header ...)
1043     - for now, fix conservation problem by exchanging KPPviscAz (may not
1044       be the best fix)
1045    o pkg/seaice
1046     - check for inconsistent evp parameter/cpp-flag combination
1047     - remove leftover errIO flat for obsolete name list error handling
1048    o OpenAD
1049     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
1050    
1051    checkpoint59a
1052    o pkg/seaice: some parameter clarifications and a little bit of clean up
1053    o pkg/thsice: rename run-time parameters:
1054       himin       -> hIceMin
1055       himin0      -> hThinIce
1056       hihig       -> hThickIce
1057       i0          -> i0swFrac
1058       transCoef   -> bMeltCoef
1059       frac_energy -> fracMelting
1060      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
1061       with default values (for now) that do not change the results.
1062      remove old version of thsice vars advection in pkg/seaice.
1063    o in FFIELDS.h:
1064      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
1065      - make pLoad & sIceLoad always available (but still only used if
1066         ATMOSPHERIC_LOADING is #define).
1067    o pkg/kpp: replaced _KPP_RL with _RL
1068    o bug fixes for vertical diffusivity computations when both KPP and
1069        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
1070        are no longer updating the vertical diffusivity array
1071        (passed as argument) but are (re-) setting those arrays.
1072    o pkg/seaice: fix bug in evp solver, while doing that
1073      - change (improve?) discretization of stress computations for both
1074        cgrid-lsr and evp solver
1075      - add a new routine to compute strain rates
1076      - the above changes lab_sea results
1077      - add no slip conditions for evp solver (off by default), lsr-version
1078        may follow
1079      - fix exchange for shear at Z-points (does not change lab_sea)
1080      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
1081        (to force the user to pick a time step since there is not "safe" way
1082        of choosing it)
1083      - add principal stress diagnostics
1084      - rearrange fields for evp a little to avoid having to call a: too many
1085        exchanges and b: exchanges for stress trensor components which we do
1086        not have.
1087      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
1088        of evp, complete rewrite for lsr case (latter is does not yet work
1089        in all cases)
1090    o pkg/kpp: add code to have mixing in shelf ice caverns
1091      - add myThid to all kpp routines (long overdue)
1092    
1093    checkpoint59
1094    o pkg/exf:
1095      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
1096        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
1097      - move exf header files from lower_case.h to UPPER_CASE.h ;
1098        add missing cvs Header & Name
1099      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
1100      - add namelist param. selectStressGridPosition, exf_monFreq
1101      - retire many _CLIM routines, and remove data.exf_clim
1102        + params moved to data.exf
1103        + climsst, climsss now handled by exf_set_gen, i.e.
1104          climss?period=0 refers to constant field,
1105          climss?period=-12 to monthly forcing
1106      - split up namelists in data.exf
1107    o pkg/seaice:
1108      - remove seaice_exch and seaice_exch_uv
1109      - remove superfluous exchange of theta
1110      - add myThid to seaice_budget_ocean/ice
1111      - add new interface for atmospheric wind forcing (C-grid only)
1112        + new routine
1113        + two new field (taux, tauy for stress over ice)
1114        + removed one global field (DAIRN) for C-grid case only
1115    o pkg/thsise
1116      - 2nd set of modifs for thsice adjoint in conjunction with exf
1117    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
1118    
1119    checkpoint58y_post
1120    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
1121      vertical diffusivity, similar to that in MOM4; turned on using
1122      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
1123      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
1124    o Added capability for 3D specification of background vertical diffusion
1125      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
1126      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
1127      "data" file that contains the 3D vertical diffusivity coefficients.
1128    o ice dynamics (pkg/seaice) with thsice thermodynamics:
1129      - add code within pkg thsice to advect & diffuse sea-ice fields
1130      similar to (and will replace) what has been added in  seaice_advdiff.F,
1131      but: - conserving Mass, Heat & Salt.
1132           - better when using non-linear advection scheme (not yet fully tested)
1133           - can also be used in atmospheric set-up (for now, only the diffusion).
1134    
1135    checkpoint58x_post
1136    o IO option for global-file compact format:
1137      - add options when generating topology (utils/exch2/matlab-topology-generator)
1138      - add I/O capability (pkg/mdsio).
1139      - adapt utils/matlab/rdmds.m to read this format.
1140      for now long-line format not yet supported by pkg/mdsio (& exch2).
1141    o shelfice: add a few diagnostics
1142    
1143    checkpoint58w_post
1144    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
1145      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
1146      (and replace horiVertRatio in NH code).
1147      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
1148                         and tutorial_plume_on_slope (sensitive to truncation)
1149    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
1150      directly to drive seaice model (C-grid only)
1151    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
1152     - reintroduce computation of wind from stress,
1153     - compute tau (in exf_bulkformulae.F) from windstress averaged to
1154       mass points to avoid tau = 0
1155     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
1156    o rdmnc.m: make it work with "global" files created with gluemnc
1157    o rdmnc.m : some improvements in dealing with singleton dimension
1158      (tested on all testreport mnc output files).
1159    o genmake2: disable pkg/profiles if netcdf test fails.
1160    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
1161    o move call to cal_readparms up to make calendar parameters/variable available
1162      to all packages
1163    
1164    checkpoint58v_post
1165    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
1166      useDynP_inEos_Zc tested.
1167    o pkg/exf: changes to properly interpolate/mask/scale initial fields
1168    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
1169      and portions thereof.  See read_cs.txt for description and examples.
1170    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
1171      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
1172      following the great-circle arc between those 2 points.
1173    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
1174      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
1175    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
1176     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
1177     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
1178     - still needs work (not working with some options ; efficiency to improve)
1179       and serious testing.
1180     - use this scheme for temperature & salinity in 2 advection test exp.:
1181       advect_xy & advect_xz, respectively.
1182    
1183    checkpoint58u_post
1184    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
1185    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
1186    o testreport: add option "-skipdir" to skip some test.
1187    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
1188      momentum calculation.
1189    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
1190    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
1191      remove checkpoint.F and the_correction_step.F (no longer used);
1192      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
1193    o add option (linFSConserveTr) to correct for tracer source/sink due to
1194      Linear Free surface
1195    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
1196    o pkg/thsice: fix reading mnc-pickups
1197    
1198    checkpoint58t_post
1199    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
1200    o pkg/mdsio:
1201     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
1202       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
1203       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
1204     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
1205     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
1206       either MDS_READ_FIELD or MDS_WRITE_FIELD )
1207     - new S/R (to replace MDSWRITEMETA), which allows to write more
1208       informations (variable names, time ...) to meta files.
1209     - modify rdmds.m to give back the meta file content.
1210    o pkg/diagnostics: change vertical interpolation to be safer, and more
1211       flexible (define p-levels to interpolate to in data.diagnostics);
1212      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
1213       diagnostic pointer.
1214    o pkg/seaice: more cleaning up of seaice_growth, added many comments
1215    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
1216    o fix multi-category seaice:
1217     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
1218       SEAICE_MULTICATEGORY
1219     - fix short wave heat flux
1220    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
1221       and allow to use EVP solver. Change forward lab_sea: test both EVP
1222       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
1223    o Initial check-in of lab_sea adjoint
1224      (very similar to natl_box_adjoint/code_seaice)
1225      * used C-grid and EVP solver
1226      * used KPP, GM/Redi
1227      * uses inAdExact=.TRUE.
1228      * gradient checks fail for both ADM and TLM
1229        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
1230        f.d. gradients actually seem more problematic than ADM, TLM gradients;
1231        issue is related to forward mismatch between g77 an ifort
1232    o pkg/seaice: overhaul of thermodynamics
1233     - growth.F and groatb.F are replaced by new routine seaice_growth.F
1234     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
1235     - move a few global fields out of SEAICE.h into seaice_growth.F and
1236       make them 2D (FICE/QNETO/ ...)
1237     - remove FO (it is the same as QNETO)
1238     - introduce a few local fields to avoid modifying external fields such
1239       as atemp, etc.
1240    
1241    checkpoint58s_post
1242    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
1243      changed exf_set_gen.F so that
1244        genperiod=0 means input file is one time-constant field and
1245        genperiod=-12 means input file contains 12 monthly means
1246    o CG2D: use pre-computed solver main-diagonal (stored in common block);
1247      this affects truncation error ; generate new output file for exp. which
1248      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
1249        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
1250        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
1251        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
1252        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
1253        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
1254    o start implementation of deep-atmosphere and anelastic formulation
1255    o verification: remove 2nd copy of input files and use script "prepare_run"
1256      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
1257    o mom_common/vecinv/fluxform: fix a few initialisation isssues
1258    o profiles: fix for multithreaded case
1259    
1260    o diagnostics: rename few diags:
1261      s/'PRESSURE'/'RCENTER '/g
1262      s/'TICE    '/'oceFreez'/g
1263      s/'TAUX    '/'oceTAUX '/g
1264      s/'TAUY    '/'oceTAUY '/g
1265      s/'SWFLUX  '/'oceQsw  '/g
1266      s/DIFx/DFxE/g
1267      s/DIFy/DFyE/g
1268      and add few ocean-forcing diagnostics:
1269      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
1270    o modifications to pkg/seaice/growth.F and budget.F, which change results of
1271      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
1272      as actual snow thickness.  It now refers everywhere to effective snow
1273      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
1274    
1275    checkpoint58r_post
1276    o modifications to pkg/seaice/growth.F, which change results of
1277      lab_sea experiment: fixes pertain to melting snow over open water, to
1278      masking EVAP under sea ice, and to using the correct AREA variable for
1279      computations of EVAP, PRECIP, HSNOW, and GHEFF
1280    o add ability to read bathy, salt, and theta using MNC (off by def)
1281    o add flooding algorithm and advection of HSNOW for pkg/seaice;
1282      both are turned off by default and do no change any results
1283    o seaice advection with pkg/thsice: a step toward the use of non-linear
1284      advection scheme, but #ifdef or commented out for now (requires more EXCH).
1285    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
1286      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
1287      in natl_box (affects results @ truncation level: update output.txt)
1288    o multi-threading and IO:
1289      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
1290      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
1291        (needed to work with SingleCpuIO): tested in all verif. exp.
1292    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
1293      affects the results (but none of the verification test uses this scheme).
1294    o Adding some pkg/diagnostics capability to pkg/seaice
1295      (will certainly be subject to changes)
1296    o ctrl: adding new control variables:
1297      lwflux, lwdown, evap, snowprecip, apressure, runoff
1298    
1299    checkpoint58q_post
1300    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
1301      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
1302      high_res_cube configuration by 4% on Columbia.
1303    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
1304      add (in global_with_exf/code) a version of EXF_INTERP_READ without
1305      dynamical allocation (seems to work in multi-threaded).
1306    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
1307      single CPU io) so that TAF does not have to see EESUPPORT.h
1308    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
1309    
1310    checkpoint58p_post
1311    o obcs: stop if obcs is used with useCDscheme = .true.
1312    o shelfice:
1313     - fix a sign error so that no slip at shelfice interface works
1314     - remove stop for combination non-hydrostatic code and shelfice. That does
1315       not mean, that the results are correct, but at least they are numerically
1316       stable
1317    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
1318    o added adjoint exch routined for all exch*3d* routines
1319      and updated flow directives
1320    
1321    checkpoint58o_post
1322    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
1323      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
1324    o change controling S/R for writing pickup file (new S/R do_write_pickup)
1325      and clean-up reading/writing of pickup files.
1326    o fix local version of read/write pickup (NH part) in rotating_tank/code
1327    o simplify EXCH interface:
1328     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
1329     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
1330    o added the regrid package
1331    o shelfice:
1332     - add a simple boundary layer scheme to reduce noise
1333     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
1334    
1335    checkpoint58n_post
1336    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
1337       local variable (not in common block).
1338    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
1339      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
1340      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
1341        to work with SingleCpuIO.
1342    o add "_d 0" to real constant of pkg/cfc subroutines ;
1343       update exp. cfc_exemple & tutorial_cfc_offline output files.
1344    o multi-threading and IO:
1345      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
1346        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
1347      - barrier before and after reading.
1348      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
1349      - avoid using MDS_WRITELOCAL for LAND pkg output.
1350      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
1351        common-block variables ; Allows multi-threading with master-thread IO.
1352    o change default MAX_NO_THREADS from 32 to 4 ;
1353      and stop cleanly when MAX_NO_THREADS is too small.
1354    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
1355    
1356    checkpoint58m_post
1357    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1358       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1359    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1360       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1361       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1362    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1363        add MITgcm_tutorials (= code + all the tutorials)
1364    o ecco, option to compute cost for total ssh (mean+anom)
1365    o consistent with addition of ptracer and ssh in pkg/profiles
1366    o profiles: adding ptracer and ssh
1367    o testreport: change multi-test output-file name
1368      (from output.txt.{name} to output.{name}.txt)
1369    o profiles: now ok for mutli-tiles case
1370    o seaice: add 4 parameters for different advection schemes for area,
1371      (effective) seaice thickness, enthalphy, and snow height. Their default
1372      is the standard parameter SEAICEadvScheme
1373    o calc_gw:
1374     - add cosFacU in zonal viscous flux (harmonic.visc.).
1375     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1376       of tutorial_plume_on_slope.
1377    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1378    o calc_gw: true flux-form, account for horizontal grid spacing.
1379      update rotating_tank results, but not plume_on_slope (affected at
1380      truncation level, 11 digits).
1381    
1382    checkpoint58l_post
1383    o calc_gw:
1384     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1385     - remove side-drag for now (need to fix it); update plume_on_slope results.
1386     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1387    o commit code to make SST/SSS weights spatially variable
1388      (based on either variable in-situ or variable initial T/S weights)
1389    o pkg/ecco:
1390      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1391        now based on horizontally varying weights wthetaLev, wsaltLev
1392      * cost_averagesflags now returns year indices in addition to day, month
1393      * sflux balance is performed on annual basis
1394        (sflxumm, sfluxmm2, bal_sfluxmm)
1395      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1396        including separate counting and multipliers
1397    o pkg/rbcs
1398      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1399    
1400    checkpoint58k_post
1401    o testreport:
1402     - always build in dir. "build" (if not there, mkdir build instead of building
1403       & running in input)
1404     - run in dir run (if it exists), in build otherwise.
1405     - call prepare_run (if input/prepare_run exists)
1406     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1407    o pkg/exf modifications to interpolation and rotation routines for more
1408       reasonable treatment of North Pole singularity: for tracers North Pole
1409       value is set to northernmost zonal-mean value, for zonal velocity it is
1410       set to zero, and for meridional velocity it is set to northernmost value.
1411    o pkg/exf/exf_check_range.F
1412     - add tile index to diagnostics and move stop statement to the very
1413       end of the routine.
1414    o pkg/diagnostics: (diagnostics_main_init.F)
1415      define title of isomorphic variables according to the current config.
1416    o pkg/thsice with pkg/seaice dynamics:
1417    - fix domain of computation (interior only, required for exf) and do exchanges
1418    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1419    o towards a standard way of dealing with multi-threading in MONITOR
1420      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1421    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1422       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1423    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1424    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1425    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1426       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1427    o tracer advection:
1428     - clean-up and simplify calc_common_factors.F
1429     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1430       advection subroutine (but still not used within DST advection S/R)
1431    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1432    
1433    checkpoint58j_post
1434    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1435      from file (collects calls previously in FORWARD_STEP)
1436    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1437    o adjoint store dir. adjusted accordingly
1438    o genmake2
1439      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1440    
1441    checkpoint58i_post
1442    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1443      on wind stress (SEAICEstressFactor defaults to 1.)
1444    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1445      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1446    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1447      on CS-grid: no longer loosing mass.
1448    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1449    o pkg/ggl90: fix sloppy output and fix a bug
1450    o pkg/seaice: added SEAICEuseEVPpickup parameter
1451      - Set to false in order to start EVP solver with
1452        non-EVP pickup files when using SEAICEuseEVP
1453      - fix sign error in diffusion in seaice_calc_rhs
1454    
1455    checkpoint58h_post
1456    * Modifications for bottom topography control
1457      o replace hFacC by _hFacC at various places
1458      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1459      o add non-self-adjoint cg2d_nsa
1460      o update autodiff support routines
1461      o re-initialise hfac after ctrl_depth_ini
1462      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1463    * Adding verification for 5x5 box (4-layer) bottom topography control
1464    
1465    checkpoint58g_post
1466    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1467       used for mean seasonal cycle, mean diurnal cycle); add an example
1468       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1469    o pkg/ggl90:
1470      - add parameter (minimum surface kinetic energy)
1471      - fix bug (avoiding division by zero)
1472    o couple pkg/thsice to pkg/seaice:
1473      - modify advection in seaice to accomodate new scalar fields to be advected
1474      - only muliDimAdection scheme work with seaice/thsice
1475      - mapping of thsice-variables to seaice-variables, back and forth
1476      - does not break the verification experiments, but does not give the
1477        desired results either
1478    o pkg/seaice
1479      - make (default) second order advection a bit less confusing?
1480    
1481    checkpoint58f_post
1482    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1483      to pkg/seaice):
1484      - new routines thsice_map_exf and thsice_get_exf provide the interface
1485      - add an additional formal parameter to thsice_solve4temp
1486    o pkg/exf:
1487      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1488      - correct Stefan-Boltzmann constant
1489      - new parameter for longwave surface emittance
1490      - separate some stuff from exf_bulkformulae into new routines  
1491        exf_radiation, exf_wind
1492      - add new parameters and constants: longwave emissivity for ocean, ice
1493        and snow, evaporation parameters over ice
1494      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1495        either wind from stress or stress from wind
1496    o pkg/thSIce:
1497    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1498    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1499       and THSICE_CALC_THICKN
1500    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1501    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1502      to make debugging easier.
1503    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1504    o pkg/bulk_force:
1505      - clean-up comments and parameters ;
1506      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1507    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1508      generate new output for test-experiment: aim.5l_cs.thSI
1509    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1510      testreport accordingly
1511    
1512    checkpoint58e_post
1513    o SEAICE_CGRID adjoint done
1514    o R_STAR adjoint implemented.
1515      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1516      * need to sort out init. of h0facc, etc.
1517    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1518      to be able to use it in pure forward.
1519    
1520    checkpoint58d_post
1521    o upgrade simple test-experiment to tutorial example:
1522     step.1: duplicate the experiment and (step.2) will remove the old copy.
1523      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1524      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1525      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1526      tutorial_global_oce_biogeo    <- copy of dic_example
1527      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1528      tutorial_plume_on_slope       <- copy of plume_on_slope
1529      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1530      tutorial_global_oce_optim     <- empty for now (David ?)
1531      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1532     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1533    o correct a sign problem in cost_scat.F
1534    o obcs and ptracers: fix boundary conditions for advections schemes
1535      with larger stencil
1536    o thsice adjoint: start
1537    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1538      completeness
1539    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1540      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1541    o ptracers adjoint:
1542      * avoid extensive recomputatations
1543      * fix missing re-init. of gptr (missed by TAF)
1544    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1545      me to turn off the excessive output to STDOUT that this package produces
1546    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1547      and add those terms in Vector-Invariant formulation.
1548    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1549      if the control period (xx_hfluxperiod etc) is 0
1550    o in profiles pkg, clean routines and fix details
1551    o in ecco pkg, reading ssh data:
1552      fix problem in case the model does not start at iter0=0
1553    o fix mnc-pickup/restart for ptracers
1554    o new package prifiles:
1555      code to compute profile-based cost by Gael Forget
1556      (modifs in ecco, ctrl, autodiff)
1557    o Benign bug fix in initialization (spotted by M. Mazloff) of
1558      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1559    
1560    checkpoint58c_post
1561    o adjoint: finish NLFS adjoint and provide reference output in
1562      verification/global_ocean.90x40x15/results_ad_nlfs
1563    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1564      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1565      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1566      with SEAICE_CGRID defined.
1567    o move calendarDumps from "data" to "data.cal" and clean-up the code
1568      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1569    o add useEXF & useCAL flags (for now, set in hard-coded way)
1570    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1571      (were missing in NH mode, and wrong in quasihydrostatic mode).
1572      waiting for Chris updated version of calc_gw to add those CALLs.
1573    o fix bug in quasihydrostatic S/R ;
1574      add a test for this option: global_ocean.90x40x15.qshyd
1575    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1576      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1577    o add on/off flag useOffLine for package OFFLINE
1578    o seaice:
1579      - modify advection so that it works also on the C-grid
1580      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1581        problem in multi-tile runs with C-grid
1582      - add flags for clipping ice velocities and/or masking solver forcing
1583      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1584        C-grid solver
1585      - added a few comments to seaice_diffusion.F
1586      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1587        are now exclusive)
1588      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1589        required re-ordering the code a little:
1590       + make DAIRN global variable (defined in SEAICE)
1591       + move computation of the viscosities eta and zeta into a new separate
1592         routine (because I need to recompute them in seaice_ocean_stress.F)
1593    
1594    checkpoint58b_post
1595    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1596      update output.txt of exp. aim.5l_cs.thSI
1597    o various mnc cleanups and improvements:
1598      + shrink lookup tables by factor of ~4
1599      + better error reporting when running out of lookup space
1600      + able to handle longer path/file names (up to 500 chars)
1601    o adjoint:
1602      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1603      - TBD: "hidden" mom_vecinv recomp. in dynamics
1604    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1605     (allow to differentiate between forcing components using new integer flags:
1606      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1607     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1608    o ecco
1609      - enable trend removal from SSH anomaly obs.
1610    o adjoint
1611      - a fix for PmEpR when #undef EXACT_CONSERV
1612      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1613      - try to fix "hidden" recomp. in forward_step for NLFS
1614        (NLFS seems broken sometimes after I checked it in)
1615    o seaice:
1616     - add c-grid version of the dynamic solver:
1617       + three new routines that are the c-grid substitute lsr, dynsolver
1618         and ostres
1619       + put a few fields that were local to dynsolver into global common
1620         blocks, so that I can move the computation of stresses etc into
1621         seaice_lsr (saves coding but may break the adjoint).
1622     - replace more hardwired parameters by runtime parameters
1623     - add ice masks that mask the rhs of the implicit solvers where there
1624       is no ice (commented out in seaice_dynsolver, because i am not sure
1625       if this works properly), eventually this should replace the clipping
1626       of ice velocities in seaice_dynsolver to +/-40cm/s.
1627    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1628      include it only where its needed
1629    o move balancing of fluxes before the call of external_forcing_surf
1630    o seaice:
1631      - correct units of turning angles (now they are really in degrees)
1632      - move computation of GWATX/Y out of main routine into dynsolver
1633      - initialize GWATX/Y in seaice_init
1634    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1635      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1636    o seaice: add runtime flags for turning angles (default to zero)
1637    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1638      and trend from exf forcing and ctrl control adjustments
1639    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1640      (since checkpoint57x_post)
1641    o change the default rotation period to 86164.s = the Earth rotation
1642    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1643      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1644    o seaice advection: add code for choosing between the default (2nd order
1645      central differences) and multiDim advection schemes provided by
1646      pkg/generic_advdiff
1647    o seaice:
1648      - removed all references to SEAICE_GRID.h fields from
1649        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1650        (cubed-sphere configuration will change a little)
1651      - grid computations in seaice_init are obsolete now.
1652      - cleaned up code a little so that is easier to read (hopefully).
1653      - added new (better?) discretizations of default advection and diffusion
1654        (turn on with SEAICEuseFluxForm)
1655      - replace 1 in 3d global fields by kSurface in growth.F
1656      
1657    checkpoint58a_post
1658    o seaice:
1659      - bug fix in advect.F
1660    o shelfice:
1661      - separate shelfice load anomaly from pload (breaks with time
1662        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1663        Its default is 0., but it may be computed more cleverly from (unknown)
1664        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1665        done offline. A good approximation of the pressure load anomaly is
1666        necessary to avoid large initial adjustment processes underneath
1667        deep-reaching shelfice.
1668      - small fix in ISOMIP shelfice_thermodynamics
1669      - add more sophisticated thermodynamics of Hellmer (1989), this is
1670        now the default
1671      - give a few constants more intuitive names
1672    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1673      if bulk formulae are used in long integration (especially EmPmR). Turn
1674      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1675      if balancePrintMean, the imbalance that is substracted is printed to
1676      STDOUT.
1677    o fix bug (typo) in obcs_apply_eta.F
1678    o add a new package shelfice which enables us to model the circulation
1679      underneath shelf-ice with draughts of hundreds of meters.
1680     - works
1681     - to do: + include improved thermodynamics
1682              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1683                instead of new field kTopC
1684              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1685                instead of new field R_shelfIce and new code in ini_depth.F
1686                and ini_mask_etc.F?
1687              + adjust vertical mixing schemes?
1688    o seaice pkg:
1689     - add a cpp-flag to include a simple formula for a salinity dependent
1690       freezing point of sea water at the surface
1691     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1692       meridional stresses are now different (and hopefully correct)
1693    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1694       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1695       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1696    o pkg/diagnostics: add options and parameters for regional-statistics
1697       diagnostics ; define regions by reading a region-mask from a file
1698       (might add other options later)
1699    o pkg/bulk_force:
1700     - add option and parameters to use AIM surface-flux formulae.
1701     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1702       others forcing fields (defined in PARM05, parameter file "data") are loaded
1703       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1704     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1705     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1706     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1707       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1708     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1709    
1710    checkpoint58
1711    o add "--embed-source" option to genmake2 which, when the supporting
1712      tools can be compiled (as determined by genmake2) will turn on the
1713      embed_files package which then embeds the entire MITgcm source code
1714      (*.[fFhc] + Makefile) used for the build within the executable
1715      - requested by CNH but off by default
1716      - adds a paltry <9MB to the mitgcmuv executable in most cases
1717      - only writes the output when useEMBEDSRC in eedata is true
1718    o clean up 3-dim. relaxation codes:
1719      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1720      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1721      * Thanks to Tom Haine for testing!
1722    
1723    checkpoint57z_post
1724    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1725      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1726    o fix the pickup behavior for obcs in combination with ptracers
1727    o fix a bug in ptracers_external_fields_load
1728    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1729      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1730    o transfered surface NH pressure to eta field (if exactConserv).
1731    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1732         and update lab_sea output.txt file.
1733    o completing 3-dim. relaxation code: additional term
1734         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1735      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1736      * At compile time, in "EXF_OPTIONS.h" set
1737          #define  ALLOW_CLIMTEMP_RELAXATION
1738          #define  ALLOW_CLIMSALT_RELAXATION
1739      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1740          tauThetaClimRelax3Dim = 15552000.0,
1741          tauSaltClimRelax3Dim  = 15552000.0,
1742      * 3 cases:
1743          1) Use a constant-in-time 3-dim. field
1744          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1745          3) Real-time relax. to time-evolving prescribed field
1746    o Adding Laplacian-type smoothness constraint on
1747      initial and boundary (forcing) controls (ic, bc)
1748      * enable at compile-time via
1749        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1750      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1751      * Absolute scale somewhat unclear so far
1752      * no area weighting was included since no other cost term does so far
1753    
1754    checkpoint57y_post
1755    First step for a NLFS adjoint
1756    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1757    o new init. routines for calc_r_star, calc_surf_dr
1758    o still need to deal with ini_masks_etc
1759    o testreport seemed happy
1760    checkpoint57y_pre
1761    
1762    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1763    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1764    o add new offset feature to offline pkg (plus minor cleanup)
1765    o cfc fixes for final year of integration
1766    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1767      be in GCHEM_OPTIONS).
1768    
1769    checkpoint57x_post
1770    o fix testreport Pb in multiple test experiment.
1771    o cleanup our namelist syntax in verification:
1772      - make it more F95 standards compliant (some work still needed)
1773      - allows the vast majority of our tests to work with gfortran
1774    o Non-Hydrostatic:
1775     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1776     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1777    o Allow to apply AB on T,S rather than on AB(gT,gS):
1778     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1779     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1780       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1781     - need a "clever" read_pickup to restart from the other AB formulation
1782    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1783    o remove some unused variables (reduces number of compiler warnings)
1784    o adjoint
1785      * Disable useVariableViscosity for adjoint for time being
1786        (there are a number of extensive recomputations)
1787      * Initialize certain variables needed for adjoint
1788    
1789    checkpoint57w_post
1790    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1791                 fix the singleCpuIO RS version of MDSWRITEFIELD
1792       and add a WARNING if using globalFiles=T with multi-processors.
1793    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1794      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1795    o tracer advection scheme:
1796      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1797       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1798       was not very convenient).
1799      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1800       (further tests needed for the implicit DST & Flux-Limiter schemes).
1801    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1802      and sRef for convenience, handy, when you want to initialize
1803      ptracers in a large domain with a constant non-zero value. Also,
1804      untangle ptracers_init.F a little.
1805    
1806    checkpoint57v_post
1807    o change dome exp. to use variable viscosity in side-drag terms.
1808    o remove all the files from the cfc_offline test since they are now
1809      incorporated into tutorial_cfc_offline which has been producing
1810      identical results for a few days of testing
1811    o add new parameter: sideDragFactor to enable half-slip-side BC
1812      and change side-drag S/R to use viscosity from mom_calc_visc
1813      (can switch back by setting sideDragFactor=0.); affects results at
1814      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1815       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1816    o vorticity & strain are now computed without masking, to account for
1817      no-slip-side BC in variable viscosity calculation ; mask is applied
1818      anyway later on, before computing advection/coriolis terms.
1819    o modify exp4 to test new obcs support for reading from external files
1820      and for passive tracers
1821    o fix behavior of ptracers_monitor when monitor output is written to a
1822      netcdf-file; still not independent of monitor.F (writes in the same
1823      file).
1824    o change default value of tRef (put a uniform, meaningful value for ocean
1825      & atmos) and initialize sRef (was missing, as Martin mentioned).
1826    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1827      to be proportional to enstrophy dissipation length.  Thus,
1828       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1829      This is now consistent with Smagorinsky and with the manual.
1830    
1831    checkpoint57u_post
1832    o OBCS and PTRACERS: add open boundary support for passive tracers
1833      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1834        OB-values from file; this is not different from the way theta and salinity
1835        are treated
1836      - however, Orlanski-radiation conditions are not supported, and the model
1837        will stop if you use pTracers and Orlanski at the same time.
1838      - beefed up the rountine obcs_external_fields_load: now only those open
1839        boundary values are overwritten with values from files for which there
1840        are really files, otherwise the OB-fields remain untouched. This makes
1841        it possible to use different OBs at different ends of the domain (as
1842        with EXF)
1843    o reduce number of exch calls in shap_filt (s2).
1844    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1845      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1846    
1847    checkpoint57t_post
1848    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1849    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1850      same truncation, independent of the face number: affects affects several
1851      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1852    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1853      note that biharmonic viscosity + no-slip was not tested in any experiment.
1854    o fix bug in non-linear free-surf side-drag ; generate new output for
1855      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1856    o make mnc honor the writeBinaryPrec flag for most kinds of output
1857    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1858    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1859      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1860    o add brackets in multi-terms sum to get same truncation, independent of
1861      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1862      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1863    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1864      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1865      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1866      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1867      Suggested values of viscosity parameters found in mom_calc_visc.
1868      Many new viscosity diagnostics available.
1869    
1870    checkpoint57s_post
1871    o Add clearing-house for viscosity calculations, mom_calc_visc and
1872      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1873      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1874      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1875      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1876      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1877      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1878      ViscAhStrain and viscAhTension are now retired.
1879    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1880    o In response to JMC's bug report, genmake2 now ignores any soft-links
1881      that it finds in the *current* directory when searching for files.
1882      Soft-links found in any other source directories will still work as
1883      they did before.
1884    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1885      a C routine to unlimit the stack size
1886    o mnc-ify pkg/aim snapshot vars
1887    o mnc-ify pkg/land as requested by Daniel
1888    o various changes to mnc including:
1889      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1890      - output can now be grouped so that all files within a group
1891          change the ITER portion of their names in lock-step together
1892      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1893          and works with both EXCH1 and EXCH2 (but needs more testing)
1894      - writing works for all verification test cases w/ g77 on Linux
1895    
1896    checkpoint57r_post
1897    o make MNC variable initialization happen earlier
1898    o add diagnostics for (almost) each term of the momentum Eq.
1899    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1900    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1901    o remove MINIMAL_TAVE_OUTPUT option ;
1902      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1903    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1904      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1905    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1906    o add time-dependent SST, SSS control
1907    o cost terms in ecco/ modularized (new cost_generic.F)
1908    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1909    o new infrastructure for seaice model vs. obs misfits in seaice/
1910      * driver from the_main_loop.F is seaice_cost_driver.F
1911      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1912      * gradient check in Exp. 6a of natl_box_adjoint/
1913    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1914      (see README file)
1915    
1916    checkpoint57q_post
1917    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1918    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1919      - bug was reported by Jean-Michel and Ian Fenty
1920    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1921      update exp. cpl_aim+ocn output.
1922    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1923      Needed for high-res. runs with large global files
1924      to be able to limit tapelev size
1925    o Changed some tests for adjoint:
1926      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1927      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1928      * global_ocean.90x40x15/ back to default 3-level checkpointing
1929    o Modifications to enable scripted COMMON to MODULE conversion
1930      * verification/OpenAD/code/ has necessary scripts and description;
1931      * converts, compiles and runs successfully;
1932    
1933    checkpoint57p_post
1934    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1935    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1936      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1937    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1938    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1939      (was already the case for dissipation with mom_vecinv,
1940       and also the case for grad.PhiHyd when staggered-timeStep)
1941      This will allow to put dissipation out-off the AB time-stepping.
1942     Unfortunately, affects truncation error. Update output of exp. that "fails"
1943      (cg2d matching number) and leave the others for later: front_relax(10),
1944      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1945      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1946    
1947    checkpoint57o_post
1948    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1949      (2) its ready to be documented during the 20050801 DocFest
1950    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1951      for ideal_2D_oce and lab_sea on linux_ia32_g77
1952    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1953      in global1x1_tot/code_seaice_adj to access indices 32, 33
1954      (worth another tag)
1955    
1956    checkpoint57n_post
1957    o adding precip control xx_precip 32
1958    o adding swflux control xx_swflux 33
1959    o Replacing 10 forcing penalty cost routines by 1 generic.
1960    o Implementing partitioning in time-mean and variable adjustment
1961      for atmos. state.
1962    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1963    o in natl_box_adjoint:
1964      * updated exp 1 to 10
1965        (but does not have time-mean vs. variable split results yet)
1966    o updated global1x1/*_seaice_adj/
1967      to incorporate latest changes
1968    o enable useSingleCpuIO for mdsio vector routines
1969      (applies in particular to tapelev I/O)
1970    o removed inefficient K-loop in all active_file*control*.F
1971    
1972    checkpoint57m_post
1973    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1974      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1975    o pkg/exch2: filling of face-corner halo regions is optional
1976      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1977    
1978    checkpoint57l_post
1979     tag before updating tutorials (pre-release-2)
1980    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1981       for output and interpolation of input fields onto model grid)
1982    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1983       Affects results of exp. rotating_tank ; update output.txt.
1984    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1985          and taking the square quantity and/or using a fraction-weight field.
1986    o fix aim_diagnostics_init.F mate numbers.
1987    o add mnc output capability to diagnostics/diagstat and update
1988      our cvsignore files for the ACSII output generated
1989    
1990    checkpoint57k_post
1991    o lab_sea now uses diagnostics package and provides a suite of
1992      new EXF diagnostics output.
1993    
1994    checkpoint57j_post
1995    o exf
1996      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1997        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1998        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1999      * extended diagnostics output
2000        - now includes all EXF variables
2001        - hs, hl moved to common block
2002        - separate S/R for diagnostics, called after ctrl vector is added
2003        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
2004        - EXFqnet contains true Qnet (i.e. includes qsw)
2005      * updated verif. lab_sea, global_with_exf
2006      * Rearranging hflux (exf_mapfields -> exf_getforcing)
2007        to ensure that diagnostics sees a true EXFqnet
2008    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
2009    o diagnostics pkg: change pointers so that 1 diagnostic can be used
2010      several times with different frequencies.
2011    o mnc-ify the thsice package as requested by Daniel Enderton
2012      - the monitor--MNC output needs work
2013      - many attributes need to be added (most are currently blank)
2014    o mnc-ify theaim_v23 package as requested by Daniel Enderton
2015      - many attributes need to be added (most are currently blank)
2016    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
2017    o add Sadourny like discretization to the 4th.O vorticity advection scheme
2018    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
2019      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
2020         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
2021    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
2022     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
2023    
2024    checkpoint57i_post
2025    o Diagnostics package was changed: diagnostic allocation is now deactivated
2026      by setting an empty file name in the namelist (used to be by setting 0 frequency)
2027    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
2028      add 1rst Order upwind vertical Shear.
2029    o add a quick fix for A/B checkpointing in OFFLINE mode
2030    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
2031      end-run around the C/Fortran linking horror in eesup/src/timers.F
2032    o added pkg/runclock: allows user to terminate run based on wall clock
2033    o added non-hydrostatic scaling parameter: nh_am2
2034    o pkg/my82: futile attempt to make results compiler-independent by adding
2035      some "_d 0", etc. no effect.
2036    o for mnc output, fill the 'T' coordinate var with myTime and create a
2037      separate 'iter' variable for iteration count
2038    o pkg/diagnostics:
2039      add new capability: output of Global/Regional & per-level statistics ;
2040      tested against monitor output (including land & thSIce) on various exp.
2041    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
2042    
2043    checkpoint57h_done
2044      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
2045      data.diagnostics, data.gchem, data.ptracers) is done.
2046    
2047    o pkg/diagnostics: prepare for Global/Regional statistics.
2048      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
2049    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
2050      and rename it: DIFFERENT_MULTIPLE
2051    
2052    checkpoint57h_post
2053    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
2054    o pkg/diagnostics: change output frequency, now in seconds (instead
2055      of Nb of iterations). This requires to change data.diagnostics.
2056    checkpoint57h_pre
2057    
2058    o in mnc, let the user create the output dir if both mnc_outdir_date
2059      and mnc_outdir_num are false
2060    o add fflags() to pkg/diagnostics which allows one to specify, on a
2061      per-file basis, the file precision [default behavior is unchanged]
2062    o added diagnostics to pkg/kpp, including computation of mixed layer
2063      depth based on a temperature/density criterion
2064    o updated verification/natl_box to test the new pkg/kpp diagnostics
2065    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
2066    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
2067    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
2068      not mnc -- this mistake was found by JMC and is now corrected
2069    
2070    checkpoint57g_post
2071    o add Adams-Bashforth 3rd Order time stepping:
2072      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
2073      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
2074    checkpoint57g_pre
2075    
2076    o make lambda[Theta,Salt]ClimRelax spatially varying
2077      (default remains spatially uniform constant based on tau)
2078    o added new control variables
2079      * init. uVel, vVel, etanN
2080      * lambda[Theta,Salt]ClimRelax
2081    o separate masks used for ctrl_pack/unpack 'from write_grid' output
2082      (suggested by G. Forget)
2083    
2084    checkpoint57f_post
2085    o add parameter "baseTime" = model base time = time at iteration zero
2086      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
2087      account for baseTime shift
2088    o move Coriolis arrays from PARAMS.h to GRID.h
2089    checkpoint57f_pre
2090    
2091    o mnc-ifying the seaice package
2092    o introduced an alternative length scale calculation for use in the limiting
2093      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
2094    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
2095    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
2096      as well as grad(vort3).  Made it compatible with both approximate form
2097      for the cubed sphere and full form of these gradients.  Added flag
2098      useFullLeith to select between approximate and full form.  
2099    o add "d0" in getcon.F to reduce differences between compilers/platforms
2100      update output.txt of exp. fizhi-gridalt-hs
2101    o change port_rand funtion to allow to set the seed.
2102    o fix obscure MNC bug involving conversion between reals and integers
2103      - it caused no problems with certain (eg. gcc, ifc) compilers but the
2104        new version is now more standards-compliant
2105    o adjoint-related modifications
2106      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
2107      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
2108      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
2109    
2110    checkpoint57e_post
2111    o Adding eddy stress controls a la Ferreira et al.
2112    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
2113    
2114    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
2115      update output.txt of exp. fizhi-gridalt-hs
2116    o add more "Z" dimensions and associated coordinate vars to MNC
2117    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
2118    o parameter calendarDumps: when set, approximate months (30-31 days) and years
2119      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
2120      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
2121      months and years.  Requires pkg/cal.
2122    o diagnostics: add pickup functionality
2123      - off by default for backwards compatibility
2124      - current version only uses MDSIO -- MNC will be added
2125    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
2126    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
2127    
2128    checkpoint57d_post
2129    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
2130    o modify verification/ideal_2D_oce so that it tests the creation of mnc
2131      output from the diagnostics package
2132    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
2133    o make genmake2 more portable by using ".$FS" instead of ".f" for more
2134      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
2135    o add coordinate variables to the MNC output from the diagnostics package
2136    o change MNC-flags default value: true when useMNC=TRUE
2137    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
2138      the ability (off by default) to read the grid information using MNC
2139    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
2140    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
2141    o do snap-shot diagnostics at the middle of the time-interval (instead of
2142      at the end).
2143    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
2144      new test for AIM with thSIce + slab-ocean
2145    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
2146    o move state variable diagnostics to the beginning of the time step ;
2147      (note: still needs some work specially for snap-shot diagnostics)
2148      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
2149    
2150    checkpoint57c_post
2151    o Change testing option (-ieee) to get closer agreement between g77 & ifort
2152    o generate new output.txt files on faulks with g77 & the new -ieee option
2153    checkpoint57c_pre
2154    
2155    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
2156      update output.txt of exp. global_ocean.90x40x15
2157    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
2158      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
2159    o add saltFlux(+File) forcing capability with periodicExternalForcing
2160    o allow to use pkg diagnostics for GM-Redi & ThSIce output
2161    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
2162    o improvements for the MNC output from DIAGNOSTICS:
2163      - correct handling of the unlimitied dimension
2164      - all dims now have associated coordinate variables
2165      - variables located at U, V, and Corner ("Z") points are now written
2166        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
2167        *all* data points are output
2168    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
2169    o added pkg/seaice/seaice_monitor.F
2170    o mdsio_readfield.F can now read files visible only to master MPI process.
2171    o pkg/seaice: some test code for ice-modified ocean stress
2172    o exf_getffields interpolation defaults to bilinear for all scalar forcing
2173      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
2174      spurious negative numbers for precipitation and humidity.  Will cause
2175      some small numerical differences for integrations using pkg/exf/exf_interp.F.
2176    o pkg/ctrl/
2177      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
2178        May be enabled via doPackDiag
2179      *  introduce z-scaling of
2180         + gradient (doZscalePack) and
2181         + control (doZscaleUnpack)
2182    o pkg/mdsio/
2183      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
2184      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
2185    
2186    checkpoint57b_post
2187    o simplify options in diagnostics_fill arguments (remove weird combinations)
2188    o fix MNC coordinate variables so that they now contain per-face index
2189      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
2190      general, EXCH2 grids are only aligned to a "local" coordinate system
2191    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
2192    o Implement instantaneous output within pkg diagnostics:
2193      setting a negative frequency in data.diagnostics produces
2194     "snap-shot" output (as opposed to time-average if freq > 0)
2195    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
2196      NOTE: change ptracer diagnostics name: use 2 characters to work with
2197            more than 9 tracers. Add also diagnostics of advect & diffus flux.
2198    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
2199      becomes the coordinate variable for the 'T' dimension
2200    o add CF-style coordinate variables to MNC
2201      - just a first cut:  numbers are meaningless on the cubesphere and
2202        missing along the T axis but otherwise it works!
2203    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
2204    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
2205    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
2206      this is based directly on what the model compute, so that the content of
2207      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
2208    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
2209    o clean up build options files for SunOS, in particular
2210      - remove -traditional from xmakedepend
2211      - change -xarch=v9 to -xarch=native for f77
2212      - restore use of make (not gmake)
2213      - add CC=gcc if using g77
2214    o changes per discussion of AM, JMC, & EH3 today:
2215      - move redundant "grid" variables out of "state" -- in preparation of
2216        creating proper CF-style coordinate variables and in recognition
2217        that any/all grid variables can be easily copied (eg. w/NCO) from
2218        the grid files into any of the other NetCDF files
2219      - *always* output grid variables with MDSIO (this will eventually be
2220        changed)
2221      - output MNC grid file if useMNC is true
2222    o every instance of _END_MASTER() has been found and replaced with
2223      _END_MASTER( myThid ) in order to satisfy certain picky Sun
2224      preprocessors
2225    o re-arrange diagnostics pkg initialisation:
2226     - allow each package to extend the available diagnostics list
2227     - add some checking and fix small problems (multi-threaded, ...)
2228     - new S/R diagnostics_fill (replace fill_diagnostics):
2229       look through the short list of active diag. (instead of the long list)
2230       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
2231    
2232    checkpoint57a_post
2233    o this set of changes restores TAMC compatibility
2234      tested for global_ocean.90x40x15 adjoint on trough
2235      (what a pain)
2236    
2237    checkpoint57a_pre
2238    o some modifs in tools/build_options for sunos
2239    o call ctrl_pack for ctrl at end for optimcycle=0
2240    
2241    checkpoint57
2242    o add horizontal bi-harmonic viscosity for vertical velocity
2243      - new parameter viscA4W (defaults to viscA4)
2244      - affects only non-hydrostatic code
2245      - to be done: no-slip lateral boundary conditions
2246    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
2247    o implement Implicit Vertical advection for pTracers
2248    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
2249      (implemented also for implicit vertical diffusion & advection)
2250    o OBCS: extend application of tracer open boundary conditions
2251      to a strip beyond the boundary of width Olx/Oly
2252    o add call monitor to TAF set of required calls (flow directives)
2253      and include in natl_box_adjoint
2254    o untangle a few ifdefs related to cost, ctrl, autodiff
2255      untangel a few ALLOW_ECCO_OPTIMIZATION
2256    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
2257      (theta2, salt2 in ecco_cost_weights)
2258    
2259    checkpoint56c_post
2260    o OBCS as control variables
2261      - update ctrl_ad_diff.list, obcs_ad_diff.list
2262      - remove balance of obcs controls from default
2263      - fix index bug nobcs in ctrl_init
2264      - fix dummy fields filen in ctrl_pack
2265      - add dummy weights for obcs
2266    o lsopt: comment out fort.94 output
2267    o optim:
2268      - remove unnecessary header files
2269      - adjusted namelists
2270      - add xerbla.F to Makefile
2271    o exf:
2272      - multiple modifications of exf_check_range
2273      - unit change in exf_init_runoff from [m/year] to [m/s]
2274    o mdsio:
2275      - i/o-vector change debugLevel from debLevA to debLevB
2276    
2277    checkpoint56b_post
2278    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
2279      is called from DO_THE_MODEL_IO
2280      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
2281      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
2282      - clean up PTRACERS_WRITE_TIMEAVE a little
2283    o add another verification experiment that tests both the cfc-pkg and
2284      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
2285      reactive tendencies treated inline with regular timestepping
2286    o testreport previously did a lousy job of comparing small numbers, so
2287      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
2288      implemented in the little c-progam tmp_cmpnum.c which is embedded in
2289      testreport.
2290    o ptracers_monitor: bug fix for MPI
2291    
2292    checkpoint56a_post
2293    o GCHEM: finish reorganizating the package
2294      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
2295        (introduces another 3D-array for each passive tracer, but only if
2296        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
2297        gchemTendency is not needed because the timestep is done separately)
2298      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
2299      - GCHEM is now---more or less cleanly---separate from PTRACERS
2300      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
2301        so clear to me how that should be done in a general way.
2302    o CFC: improve formatting of output in CFC_ATMOS
2303    o PTRACERS:
2304      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
2305        that ALL experiments with ptracers enable can be checked. This makes
2306        GCHEM_MONITOR obsolete.
2307      - include a runtime parameter PTRACERS_monitorFreq that defaults to
2308        monitorFreq
2309      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
2310    o add PTRACERS (PTR0[1-5]) to testreport output
2311    o exf_check_range:
2312      * default changed to .TRUE.
2313      * will check values for niter0 if debLevA, every timestep if debLevB
2314      * STOP in exf_check_range if 'out of range'
2315      * range chosen generous to allow for potential extema
2316      TBD: a version with stricter range
2317           permitted range would be runtime parameters
2318    o GMredi:
2319      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
2320      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
2321      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
2322    o GCHEM:
2323      - move call to GCHEM_FORCING_SEP, so that it is now called before
2324        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
2325      - introduced a useGCHEM runtime flag and applied it everywhere.
2326      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
2327        this flag is now only visible within GCHEM-pkg routines.
2328      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
2329        be replaced by a 3D array that is computed before thermodynamics; for
2330        this, the tracer ID iTracer had to be included into the parameter list
2331        of ptracers_forcing
2332      - set up forward_step to call gchem_forcing, that will replace
2333        gchem_forcing_int in ptracers_forcing
2334      - cleaning up
2335    o small cleaning of exch2: remove files that are also in eesupp/src
2336    
2337    checkpoint56
2338    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
2339    o mnc: cleanup "full" files--fixes out-of-memory problem
2340    o ECCO-GODAE
2341      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
2342      * fully merged and updated from SIO code
2343        windstress sign change affects
2344        - exf_inscal_[u/v]stress
2345        - sign of xx_tau[u/v] adjustments
2346        - signs in cost_scat
2347      * ctrl_get_gen: avoid update of tau[u/v] for first few days
2348      * natl_box_adjoint updated and compressed
2349      * 2-level checkpoint switch added
2350        (tested in EXP. 1 of natl_box_adjoint)
2351      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
2352    o SVD
2353      * first complete, non-hacked version for SVD calculations
2354      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
2355        performed via direct access files admtlm_vector.it????
2356        (via ctrl_[un]pack)
2357      * optimcycle is used for ARPACK iteration counter
2358        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
2359      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
2360        and add linear transforms where necessary
2361      * controls are initial/final SST, SSS (can be extended; need to check
2362        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
2363    o mdsio: filename info to both stderr, stdout
2364    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
2365      from sign change
2366    
2367    checkpoint55j_post
2368    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
2369      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2370    o add consistent build directories and .cvsignore files to verification
2371    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
2372    o make all subroutines 30 or less characters in length for certain older
2373      compilers to work (a thorough search only turns up two routines in
2374      pkg/ptracers)
2375    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
2376      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2377    
2378    checkpoint55i_post
2379    o change arrays for total vertical diffusivity (2.D if explicit,
2380      3.D if implicit) ; each ptracer uses its own background value.
2381    o added mnc/NetCDF output capability to ocn_compon_interf
2382      - added bits to verification/cpl_aim+ocn so that it can run on
2383        ITRDA and other clusters without the mpirun "-wd" option
2384    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
2385      configuration
2386    o give MNC the ability to create additional files rather than
2387      exceeding a specified file size limit "MNC_MAX_FILESIZE"
2388      - the default is just less than 2GB which is a practical limit
2389        on many systems
2390    o Compute the non-local term using either KPP vertical diffusivity (=default)
2391       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
2392    
2393    checkpoint55h_post
2394    o add verification test "vermix"
2395    o remove all the *_ioinc flags and replace with the single global
2396      outputTypesInclusive flag
2397    o allow to set a vertical profile of vertical diffusivity for T & S
2398    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
2399    o useMNC moved from data.mnc to data.pkg
2400    
2401    checkpoint55g_post
2402    o Renaming carbon AD experiments to comply with testreport conventions
2403    o Updating adjoint of Held-Suarez hs94.1x64x5
2404    o Fixing directives for non-ECCO forward_step, after ECCO directives
2405      have been fixed to avoid recomp. of do_oceanic_phys
2406      Works well for global_ocean.90x40x15,
2407      but recomp. issue remains for carbon
2408    o Updating adjoint output for natl_box_adjoint after
2409      pkg/ecco has been modified (see taga c55d_post)
2410    
2411    checkpoint55f_post
2412    o rename to timeave_init_fixed
2413    
2414    checkpoint55e_post
2415    o some delicate re-shuffle of store directives to avoid one
2416      extra call of do_oceanic_physics
2417      affects ecco_the_main_loop.F, do_oceanic_physics.F
2418      checkpoint_lev1_directives.h
2419    o NB: this may break global_ocean adjoint temporarily,
2420      but it is clear how to fix it. Will do later, need this now.
2421    
2422    checkpoint55d_post
2423    o ECCO specific cost function terms (up-to-date with 1x1 runs)
2424    o ecco_cost_weights is modified to 1x1 runs
2425    o modifs to allow observations to be read in as
2426      single file or yearly files
2427    o enable to read exf forcing fields as either
2428      single file or yearly files (flag useExfYearlyFields)
2429    checkpoint55d_pre
2430    
2431    o switch between 2-level and 3-level checkpointing
2432    o add ability of MNC to write local and "partial" (eg. 2D slices where
2433      the full 3D field is never actually stored) arrays to NetCDF files
2434      with the correct (that is, the complete multi-dimensional) set of
2435      array indicies
2436      - used in mom_vecinv() to write the diagFreq output
2437      - tested (demonstrated) in verification/aim.5l_cs
2438    o further mnc-ification
2439      - add verification/lab_sea to the list with mnc setups
2440      - fix undefined mnc v-names in cd_code
2441      - add kpp to mnc output (both snapshot and timeave)
2442    o non-hydrostatic code
2443      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
2444        in calc_gw.F
2445      - defaults to viscAh
2446      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
2447        friction or Leith) in non-hydrostatic mode, as long as there is
2448        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
2449    o pkg/cost
2450      extend simple cost functions to treat time mean quantities
2451      (T,U,V) via cost_accumulate_state from cost_tile
2452    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
2453        be 2 times larger than the minimum size the advection scheme requires.
2454        now get a perfect conservation of salt in advect_cs test-exp (updated)
2455    o GGL90 (Gaspar's TKE mixed layer)
2456      - add horizontal diffusion of TKE, requires exchanges in
2457        do_fields_blocking_exchanges, horizontal diffusivity is zero by
2458        default. In OPA there is no horizontal diffusion of TKE but the
2459        mixing coefficients are computed from a horizontal average of TKE of
2460        6 points or so. I think that diffusion has a little more physical
2461        justification.
2462      - clean up ggl90_calc in the hope of reducing memory usage (this hope
2463        was in vain)
2464      - mask tke-variable in ggl90_init
2465    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
2466    o fix biharmonic diffusion on CS-grid.
2467    o more obcs stuff
2468      - added obcs_external_fields_load as an alternative to the EXF-pkg option
2469        for reading boundary values. This routine is called from
2470        obcs_prescribe_read
2471      - updated obcs_check
2472      - changed sponge layer relaxation parameter units for days to seconds
2473      - turned off sponge layer by default
2474      - changed argument list of OBCS_CALC to myTime+deltaTclock
2475      - fixed about 35 bugs in obcs_external_fields_load
2476    
2477    checkpoint55c_post
2478    o obcs stuff
2479      - new runtime flags useOBCSprescribe, useOBCSbalance
2480      - re-arranged obcs_calc
2481      - moved exf_getobcs to obcs_prescibe_read
2482        obcs_prescibe_read is called after ORLANSKI stuff
2483        and independent of it (executable can contain all).
2484      - updated obcs_check
2485      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
2486        These may be necessary only if tangential velocities are
2487        prescribed at OB, not sure, needs testing.
2488    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
2489      which simplifies the calls and passes the ifc check-bounds test
2490    
2491    checkpoint55b_post
2492    o add a 2D scalar, Z location, exchange_2 routine.
2493    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
2494      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
2495      affects advect_cs results (for the wrong reason): update output.txt
2496    o use a more standard discretization for biharmonic viscosity ;
2497     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
2498      affects results of dome set-up: update output.txt
2499    o fix gad_advection.F (CubedSphere part), back to version 1.23
2500    o fix bug in mom_vi_del2uv.F (CubedSphere part).
2501    
2502    checkpoint55a_post
2503    o merged code to
2504      * prescribe/read time-dependent open boundaries
2505        (works in conjunction with exf, cal)
2506      * sponge layer code for open boundaries
2507      * each boundary N/S/E/W now has its own CPP option
2508        (healthy for the adjoint)
2509    
2510    checkpoint55
2511    o up-to-date adjoint of previous breaks
2512      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
2513      - global_ocean_ebm: adjoint still needs fix (TLM ok)
2514      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
2515      - carbon: * remove tr1-related adjoint verification
2516                * add ptracer as control variable
2517    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
2518      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
2519    
2520    checkpoint54f_post
2521    o in verification/carbin/ remove experiment related to
2522      ALLOW_PASSIVE_TRACER (array tr1 etc)
2523      code_ad/ input_ad/ results_ad
2524    
2525    o add two new packages
2526      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
2527        + subject to optimization (memory)
2528      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
2529        + subject to reordering (many GOTOs in the original code)
2530        + so far opps is called for every (i,j) point, and then operates in
2531          the vertical; one may want to reorder the scheme in order operate in
2532          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
2533          fields)
2534    o overhaul of IO so that we now have flags for MDSIO and/or MNC
2535      - all verification tests compile and run with linux_ia32_g77
2536      - defaults are compatible with current input files--nothing
2537        should change if you were not previously using MNC
2538      - MNC output has been added in numerous places (eg. timeave)
2539        but there are still a few writes not yet do-able with MNC
2540        (this is in progress)
2541      - flags now allow for either/or/both use of MDSIO and MNC and
2542        documentation will soon follow
2543      - numerous small formatting cleanups for ProTeX
2544    o add version info (via BUILD_INFO.h) to MNC and stdout
2545    
2546    checkpoint54e_post
2547    o add two new packages
2548      - pp81 (Packanowski and Philander, 1981), Richardson number and
2549        stratification dependent mixing
2550      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2551      - these scheme operate in a similar manner as KPP (without ghat, of
2552        course), however there is only one diffusivity that is used for both
2553        temperature and salinity (and passive tracers)
2554    o add offline package
2555    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2556      provided by Stephanie Dutkiewicz
2557    o genmake2: add ability to search for C compilers and cleanup test output
2558      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
2559    
2560    checkpoint54d_post
2561    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
2562    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
2563      leading to additional shift by 5 days each year of integration
2564       (i.e. leading to considerable offset over the years)
2565    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
2566    o start with no AB and no initial filtering (staggerTimeStep):
2567      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
2568    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
2569      (external loading & cpl import/export stay in forward_step.F)
2570    o update coupling interface to work with new staggerTimeStep
2571    o change MDSIO ptracers_pickup.
2572    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2573    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2574    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2575    
2576    checkpoint54c_post
2577    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2578      this affects (truncation error) output.txt of test-exp:
2579       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2580    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2581    o change Qnet to always be the net heat flux, (+upward).
2582      affects (truncation error) output of natl_box exp.: updated
2583    o define the max number of passive tracers in PTRACERS_SIZE.h
2584    o start to test mnc routinely in exp0
2585    o add sea-ice loading (sIceLoad) as a new forcing field.
2586    
2587    checkpoint54b_post
2588    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2589       impressive on Altix and Opteron systems)
2590    o diagnostics can now write NetCDF files through the mnc package
2591    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2592    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2593    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2594      affects (truncation error) output of lab_sea & natl_box exp.: updated
2595    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2596    
2597    checkpoint54a_post
2598    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2599    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2600    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2601    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2602      + internal_wave (shift in writing cg2d_ini_res)
2603    checkpoint54a_pre
2604    
2605    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2606      - modified verification/lab_sea and natl_box_adjoint accordingly
2607    
2608    checkpoint54
2609    checkpoint53g_post
2610    o prepare splitting of thermodynamics: store convect.counter in common block
2611    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2612      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2613    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2614    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2615    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2616    o restore adjointability
2617    
2618    checkpoint53f_post
2619    o modifications that affect AIM experiment results (update output.txt):
2620      - no advection of S at top interface Nr (pkg/generic_advdiff)
2621      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2622    o AIM pkg:
2623      - include stability function into surf.Flux derivative relative to Tsurf
2624      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2625    
2626    checkpoint53e_post
2627    o merged cylindrical coord configuration
2628    o added rotating_tank experiment
2629    checkpoint53e_pre
2630    
2631    checkpoint53d_post
2632    o faulks upgraded: re-generate output.txt that have changed:
2633       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2634    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2635    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2636    o added Sadourny discretization of Coriolis
2637      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2638      - re-enabled use of omega3 (useAbsVorticity)
2639    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2640      vector-invariant equations
2641      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2642    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2643      hopefully without new bugs
2644      - still to do: biharmonic friction for non-hydrostatic w
2645    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2646    o regenerated output for global_ocean_ebm (using -ieee)
2647    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2648      of mom_common/
2649      - simple re-arrangement of instructions within computing loop
2650    checkpoint53d_pre
2651    
2652    checkpoint53c_post
2653    o new version of coupler for AIM+thSIce and Ocean models
2654     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2655     - land: change Evaporation of snow
2656     - aim with thSIce: fix bug in snow-precip.
2657    o changes to calc_gw.F
2658     - bug fix for w^2 term near the bottom boundary
2659     - (hopefully) improve the lateral slip boundary condtions for use with
2660        partial/looped cells
2661      - because the bug fix changes two verification experiments anyway (exp5
2662        and plume on slope), change the lateral boundary condition from half slip
2663        to the value of no_slip_sides
2664    o ebm package wasnt quite up to the parallel task. Fixed that.
2665    o Adjoint of EBM package + verification
2666      * TLM OK
2667      * ADM not sufficient accuracy yet (needs further testing)
2668    
2669    checkpoint53b_post
2670    o Commiting new energy balance model to repository
2671      * package is pkg/ebm
2672      * verif. is verification/global_ocean_ebm
2673      * references are in ebm_driver.F
2674    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2675    C        Global thermohaline circulation. Part I:
2676    C        Sensitivity to atmospheric moisture transport.
2677    C        J. Climate 12(1), 71-82
2678    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2679    C        Global thermohaline circulation. Part II:
2680    C        Sensitivity with interactive transport.
2681    C        J. Climate 12(1), 83-91
2682    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2683    C        Destabilization of the thermohaline circulation
2684    C        by atmospheric eddy transports.
2685    C        J. Climate 7(12), 1870-1882
2686    o Will need long integration testing.
2687    checkpoint53b_pre
2688    
2689    o created pkg/mom_common in preparation for variable viscosity code
2690    o renamed and split ini_mnc_io
2691    o pkg/land: only liquid water can diffuse or run-off
2692    o AIM using land: soil wetness availability account for snow
2693    o added printMapIncludesZeros to EEPARMS namelist
2694    
2695    checkpoint53a_post
2696    o restore TAMC compatiility for exf_constants.h
2697      (no usage of _d in .h)
2698    o Additional storing in KPP in an attempt to fix
2699      TAMC problem with adjoint of KPP code.
2700      (no success...)
2701      Identical code works fine with TAF.
2702    o Fixed verification/natl_box_adjoint experiments.
2703      Initial conditions for Experiments 4 and 5 are now
2704      set to "SEAICE_initialHEFF=0", which is more reasonable,
2705      and hence gives results closer to that of Experiment 2.
2706      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2707    
2708    checkpoint53
2709    o stable checkpoint with up to date adjoint
2710      TLM tests only run for 1st grdchk at the moment. Its unclear if
2711      this is a code problem or a problem with resetting code for g_
2712      variables that is being autogenerated wrong.
2713      Otherwise:
2714       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2715       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2716         are both still in chaos following their security messes.
2717    
2718    checkpoint52n_post
2719    o various build (mostly genmake2) changes including:
2720      - ability to build/run more easily within Cygwin and MacOS X
2721      - more complicated Makefiles with a stronger dependence on Gnu Make
2722    o pkg/seaice modifications
2723      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2724        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2725        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2726      - changed proxy for geostrophic velocity and updated
2727        verification/lab_sea/results/* accordingly
2728      - removed ADI dynamic solver from pkg/seaice
2729      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2730        they caused a segmentation fault under certain circumstances
2731      - removed unused field WATR
2732    o bug fix in exf-package:
2733      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2734         now reflect that.
2735    o small fixes in the cal-package:
2736      - set reference date to first of January for the 'model'-calendar
2737      - failing of cal_CheckDate in cal_FullDate now actually results in a
2738        warning
2739    o small modifications in exf-package to increase flexibility:
2740      - change climtempfreeze from a constant to a runtime parameter that
2741        is specified in data.exf_clim (default = -1.9)
2742      - introduce runtime parameter windstressmax (default = 2.0) that is
2743        specified in data.exf
2744    o fix in pkg/thsice:
2745      - update Evap (Tsf changes) to be consistent with Latent heat flux
2746      - maintain snow precipitation unchanged (even if Tsf >=0).
2747     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2748    
2749    checkpoint52m_post
2750    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2751      this does not change any of the results, because myIter=0 in swfrac always
2752      lead to jwtype=2 (the default anyway), but the call makes little sense
2753      as a default
2754    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2755    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2756      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2757    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2758    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2759    o extending useSingleCpuIO option to work with new exch2 I/O format
2760      - old-style, missing-tile I/O is still accessible by defining CPP
2761        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2762    o monitor package can write to NetCDF files and/or STDOUT
2763    o fix re-definition bug in MNC_GRID_INIT_ALL()
2764    o doc/api_reference added
2765      - a framework for building an API Reference Manual using all
2766        the "protex" comments embedded in the code
2767      - see pkg/generic_advdiff, pkg/mnc for examples
2768    o MNC:
2769      - make myThid the last argument for all subroutines
2770      - new default for the grid files: NO halos
2771      - add useMNC and other run-time flags
2772      - separate per-file-group handling of the unlimited dimension
2773      - early initialization of MNC w/ flags read at the eeboot stage
2774        and lookup tables set in initialize_fixed
2775      - write all MNC output to a freshly-created directory
2776    o thermodynamics sea-ice (thsice) is now tested with testreport.
2777    o test exp. advect_cs: use the standard cs32 grid ; update output.
2778    o Added functionality to grdchk:
2779      pick global i,j,k position (or nearest wet) where to perform check.
2780    
2781    checkpoint52l_post
2782    o new land formulation:
2783      a) use ground enthalpy as prognostic variable to ensure exact
2784         energy conservation.
2785      b) account for water temperature and for latent heat of freezing
2786         in all processes (rain, run-off, ground storage)
2787      c) compute surface and ground temperature implicitly.
2788    o aim_v23 modification for new land model:
2789      a) Treat separately land / ocean / sea-ice surface fluxes
2790         to allow implicit computation of land & sea-ice surface temp.
2791      b) add snow precipitation.
2792    checkpoint52l_pre
2793    
2794    o fix problem (when 1 tile is empty) in min/max monitor.
2795    o fix bug in timeAve (u,vZetatave in common block)
2796    o no restoring terms under ice for pkg/seaice
2797    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2798    o bug fix for pkg/seaice pickups
2799    o change MNC call locations and add coordinate attributes
2800    o mask vorticity at the corner ; affects global_ocean.cs output
2801    o fix ini_curvilinear_grid ; test CS experiments with mpi
2802    o aim.5l_cs: modify sea-ice fraction input file ; update output
2803    o exf: Adding simple range check routine for exf fields after read
2804    
2805    checkpoint52k_post
2806    o removed top-level directory "diags"
2807      - we migrated these functions to pkg/timeave a long time ago
2808    o fixed bug introduced in pkg/monitor
2809    o accuracy ctrlprec = 32 insuffient for gradient checks using
2810      averaged fields (I/O via cost_averages)
2811      -> use ctrl.h in active_file*.F to control I/O precision.
2812    o paramter list of CALL ADTHE_MAIN_LOOP
2813    o added initial do_the_model_io to ecco
2814    o set all ...Freq to zero after cost_final
2815      taveFreq, dumpFreq, pChkptFreq
2816    o MAIN and ECCO differentiability restored
2817    
2818    checkpoint52j_post
2819    o fix nchklev in tamc.h for global_ocean...
2820    o Bringing flow and store directives up-to-date
2821    o Really weird thing!
2822      call do_the_model_io from the_main_loop with parameters
2823      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2824      TAF places a faulty re-call of initialise_varia
2825      after cost_final call which should not be there!
2826    checkpoint52j_pre
2827    
2828    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2829      error messages
2830    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2831    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2832      debug output
2833    o modfied mdsio_writefield.F to handle non-global files under exch2
2834    o update AIM Cubed-Sphere exp (aim.5l_cs):
2835      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2836    o update AIM Equatorial Channel exp:
2837      use standard aim_v23 pkg and change the SST fields to be more realistic.
2838    o globalFile now works with exch2
2839    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2840      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2841    o limit timeave output for hi-res integrations
2842    
2843    checkpoint52i_post
2844    o removed CPP_EEOPTIONS.h from verification/*/code
2845    o updated the tiling for global_ocean_pressure
2846    checkpoint52i_pre
2847    
2848    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2849      the old pkg/aim).
2850    
2851    checkpoint52h_pre
2852    o shortened offending lines in exch2_send_rx?.template
2853    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2854  o genmake2: add build & execute test for NetCDF code  o genmake2: add build & execute test for NetCDF code
2855  o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed  o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2856    old grid files, moved CPP_EEMACROS.h to pkg/exch2    old grid files, moved CPP_EEMACROS.h to pkg/exch2
2857  o added useSingleCPUIO flag to monitor.F and mon_out.F  o added useSingleCPUIO flag to monitor.F and mon_out.F
2858    o added temporary hack for sea-ice dynamics on the cube:
2859      metric terms are ignored and it is assumed that
2860      there is no sea-ice on cube faces 1, 2, 4, and 5.
2861    
2862  checkpoint52f_post  checkpoint52f_post
2863  o added exch2 cube routines to pkg/exch2  o added exch2 cube routines to pkg/exch2

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