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revision 1.321 by jmc, Mon Jul 5 23:56:43 2004 UTC revision 1.1158 by mlosch, Fri Sep 18 12:36:12 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  tag before changing staggerTimeStep  o pkg/kpp:
8     -add double diffusive contributions as a hack, turned off by default
9      for now, and the code can be excluded with a CPP-flag
10      EXCLUDE_KPP_DOUBLEDIFF just as EXCLUDE_KPP_SHEAR_MIX
11     -add a verification experiments to "vermix" to test this code
12    o pkg/mom_common:
13      Move computation of length scales to mom_init_fixed.F (avoid recomputation
14      at each time-steps*levels).
15    o pkg/layers:
16      Created a new package for computing volume fluxes in temperature or
17      [not yet implemented] density layers, e.g. for calculating residual
18      overturning circulations.
19    o pkg/diagnostics:
20      implement a RS type version for the set of DIAGNOSTICS-FILL subroutines
21    o fix few RS/RL type mismatch (check with ifort 11.1 "-warn all" option)
22    o pkg/mdsio (& pkg/rw): rework high level S/R interface:
23      To avoid mixing type (RS/RL) of input/output array argument,
24      replace single mixed-type array with a pair from each type (RS/RL).
25    o setting pickupSuff force to start from a pickup (even if nIter0=0): this
26      is now implemented for all pkgs (previously only done for the main pickup)
27    
28    checkpoint61u
29    o pkg/obcs:
30      - change OB?eta from _RS to _RL and put them into a separate commen block
31      - add code to read OB?eta from a file via obcs_prescribe_read: the code
32        compiles and does not destroy any other experiments, the data is read
33        properly, but the code is not tested in actual applications
34    o ini_mnc_vars.F: if available (ALLOW_CAL), use startTime_1 and 2 to
35      create a meaningful unit attribute for the time coordinate variable
36    o pkg/ebm: add plenty of missing "_d 0" ;
37       update results of experiment global_ocean_ebm (fwd + adjoint tests)
38      Notes: several pieces of code only works for (very) specific set up
39       (domain size, lat range, etc ...); should be documented & stop if one
40       of those assumptions is not meet.
41    o pkg/seaice: add missing "_d 0" in HSNOW initialisation
42       update results of experiments: lab_sea (3 fwd tests + 2 adjoint tests)
43          and offline_exf_seaice (seaicetd + adjoint).
44    o add missing "_d 0" in ShortWave flux penetration (S/R SWFRAC):
45       update results of experiments: lab_sea (4 fwd tests + 3 adjoint),
46        seaice_obcs, global_ocean.cs32x15 (icedyn & thsice) and natl_box (x2).
47    o few changes to pass when compiling with strick checking of arguments
48       across S/R (allow to find few bugs in S/R calls).
49    o pkg/seaice:
50     - seaice_evp: move if-statement out of loop (TEM) at the cost of 11 new
51       2d-fields, for slightly better performance
52    
53    checkpoint61t
54    o pkg/seaice:
55     - remove unused variables in seaice_evp
56     - reduce number of SQRT in seaice_evp and seaice_calc_viscosities
57    o eeset_parms.F, open_copy_data_file.F & ini_parms.F:
58       named file replacing SCRATCH files (for TARGET_BGL & TARGET_CRAYXT):
59       each processor opens a different file (a fix from Matt).
60    o cg2d:
61       use simple EXCH (overlap size = 1 and ignore corners), like in cg3d.F :
62       this reduces number of EXCH calls by 2 when using exch2.
63       For now, keep previous size array for gc2d_nsa.F to avoid Pb with store
64       directives and missing simple EXCH (exch_s3d_rx) adjoint code.
65    o pkg/thsice:
66       add code for Near Infra-Red albedo (from Jeff)
67       (turned on with run-time flag: thSIce_calc_albNIR, in data.ice).
68    o ini_model_io:
69       move (from packages_readparms.F & initialise_fixed.F) to ini_model_io.F
70       MNC & MONITOR initialisation calls; move MNC calls from {pkg}_readparms.F
71       to {pkg}_init_fixed.F for {pkg}= kpp, seaice & shelfice.
72    
73    checkpoint61s
74    o pkg/exch2 (exch2_rxN_cube*):
75       remove last BARRIER (no need to synchronise after getting data from shared
76       buffer (get) as long as any change to buffer (put,recv) is between BARRIER)
77    o change tiling of natl_box (from 2 to 4 tiles) to get it tested with MPI+MTH
78      and generate new output (for the 2 tests) using default rotationPeriod.
79    o pkg/exch2:
80      - always call exch2_*_cube, not exch-1 anymore, if useCubedSphereExchange=F
81        (was already the case with AUTODIFF_EXCH2 defined)
82      - add bj in exch2 arrays and S/R.
83      - can now use pkg/exch2 for regular (non CS) set-up; switch test experiment
84        MLAdjust to exch2 (identical results except with MPI -> truncation diff);
85    o add pkg/longstep for ptracer timestep a multiple of U/V/T/S timestep
86      - adds deltaT argument to the subroutines TIMESTEP_TRACER DWNSLP_APPLY
87        GAD_ADVECTION GAD_CALC_RHS GAD_IMPLICIT_R GAD_SOM_ADVECT
88      - verification experiment natl_box.longstep
89    o build_options: ifort+mpi_aces optfile (following Constantinos advise):
90      allow different versions of ifort (8 or 9) and different versions
91       of mpi (mpich or mpich2) to be used with the same optfile.
92      requires to load a netcdf module and set MPI_INC_DIR (see comments inside
93       optfile). Change testing scripts (example_scripts/ACESgrid) accordingly.
94    o pkg/seaice:
95      fix previous modif (3-level field removed) for old-pickup reading
96    
97    checkpoint61r
98    o pkg/seaice:
99     - clean up the 3-time levels of UICE,VICE,HEFF,AREA in three steps:
100      1. introduce fields for time step (N-1)
101      2. do not use levels 2 and 3 anymore (but keep them)
102      3. replace 3D versions of UICE,VICE,HEFF,AREA by 2D versions. This
103         includes changes to pkg/thsice/thsice_get_velocity.F,
104         model/src/external_forcing_surf.F, pkg/obcs/obcs_apply_seaice.F, and
105         pkg/obcs/obcs_apply_uvice.F.
106     - completely remove code for leap-frog time stepping for second order
107       advection
108     - adjusted adjoint accordingly;
109       gradient checks have improved by an order of magnitude!
110    
111    checkpoint61q
112    o pkg/seaice: fix bug in free slip boundary conditons for LSOR solver
113     - the boundary conditions along open boundaries are unclear, because the
114       associated masks are set to zero and are thus treated as closed when
115       applying the slip-boundary conditions.
116     - move initialisation of grid variables from seaice_init_varia to _fixed
117    o adding doc/diags_changes.txt
118    o model/src:
119      do_the_model_io: rename few pkg S/R which are called from do_the_model_io,
120       to avoid "_diags" naming if no relation to pkg/diagnostics.
121      ini_theta,ini_salt: fix (at least compile the code) reading from NetCDF
122       file and only call PLOT_FIELD_XYZ if debugMode=T.
123      remove few PLOT_FIELD_XY calls outside initialisation.
124      remove few unnecessary BARRIER.
125    o pkg/salt_plume: add SaltPlumeSouthernOcean to allow disabling
126      of salt_plume package in Southern Ocean
127    o pkg/thsice:
128     - fix hOceMxL in overlap (needed for sea-ice advection);
129       update output of experiment global_ocean.cs32x15.icedyn.
130    o pkg/seaice:
131     - make the (placeholder-)tracer IceAge a little more meaningful
132      by avoiding ridging of age due to convergent ice flow
133     - add diagnostics for surface temperature, atmospheric and oceanic
134       heat flux, and atmospheric and oceanic ice growth
135    
136    checkpoint61p
137    o eesupp (global_max & global_sum):
138     - add one more element to buffer (start at index 0) for GL_MAX/SUM output;
139     - remove starting & endding barrier (no longer needed)
140    o pkg/mdsio, writelocal:
141       works also in multi-threaded when LOCBIN_IO_THREAD_SAFE is undefined
142       (remove the STOP): uses shared buffer IO to store data from all threads
143       and then let master-thread write nThreads tiles.
144    o pkg/mdsio (read/write field):
145     - tiled IO done in 1 piece (all levels at a time);
146     - new header file "MDSIO_BUFF_3D.h" with 3-D buffers.
147     - multi-threaded: allow to read/write local (non-shared) array
148       (was already working with singleCpuIO ; now works also without);
149       => no longer needs barrier call after reading a file (added inside
150       mds_read/write field).
151     - move barrier calls outside gather/scatter_2d to mds_read/write_field
152    o pkg/obcs/exf
153      - exf_getffieldrec.F: add a few ". _d 0" and
154                            add code to catch the case fldperiod = 0.  
155      - obcs_precribe_read.F: change if statements so that they match
156                              the variable type (_RL)
157      - add a separate exf_iprec_obcs to exf_set_obcs (by default equal to
158        exf_iprec) as part of namelist EXF_NML_01
159    o pkg/mdsio:
160      - read/write tiled (local) files: read/write 1-level tile chunk at a time
161        (instead of segment of length sNx); expected to speed up tiled IO.
162    o pkg/exch2:
163      - take buffer copy from/to array out of S/R exch2_send/recv into new
164        S/R exch2_put/get ; Exch of local variable now works with MPI+MTH
165        (tested by removing commom block statement in SOLVE_FOR_PRESSURE.h).
166      - ad version of send/recv no longer needed (but needs exch2_ad_put/ad_get)
167      - simplify argument list of S/R exch2_get_uv_bounds and exch2_get_scal_bounds
168        (which replaces exch2_get_recv_bounds & exch2_get_send_bounds) by
169        including Topology header file (and common blocks).
170      - implement EXCH_IGNORE_CORNERS in scalar exchange (rx1);
171        remove 2nd exch call in exch2_s3d_rx (no longer needed).
172      - document S/R arg. list (+ update some comments)
173    o pkg/seaice:
174      - added SEAICE_CLIM_AIR code, which permits modulation of surface air
175        temperature and humidity over sea ice based on climatological values.
176      - clean up computation of Hibler+Bryan (1987) stress coupling for the case
177        of LSR (this change is expected to change the results slightly because now
178        it uses slightly difference moduli from the second last LSR solution, but
179        that is more consistent with the stress computations; this part of the code
180        is not tested in the verification experiments)
181      - fix diagnostics for flux of ice in case of B-grid
182      - turn strain rates eij and press into global fields within global
183        common block in SEAICE.h for more straighforward diagnostics
184      - fix diagnostics for principal stress components, press, zeta, eta
185        to give something meaning full
186    o change tiling of global_ocean.cs32x15 (12 tiles, 32x16) and generate
187      new output (all 4 tests) using default rotationPeriod.
188    o pkg KPP:
189      - add flag (LimitHblStable) to avoid limiting BL depth under stable conditions
190      - fix vertical indices in RI_IWMIX (match between KPP grid from 0 to Nr+1
191        and normal grid from 1 to Nr)
192    o Fix computations of L4rdt in mom_calc_visc.F
193    o eesupp:
194      new S/R ALL_PROC_DIE (like EEDIE, without irrelevant threads err msg):
195      should be called before a "stop" if we know that all process are going
196      to stop; if one Proc does call this S/R, will hang in MPI_FINALISE.
197    
198    checkpoint61o
199    o pkg/exch2: change check_depths to issue just a warning (instead of error+stop)
200    o model/src/ini_curvilinear_grid.F:
201       compute angleSin/CosC when they are not read from a file
202    o pkg/seaice:
203       add pseudo time stepping for LSOR
204    o pkg/exch2:
205       temporary fix for exch2_s3d_rx; update results of exp. hs94.cs-32x32x5.impIGW
206    o pkg/seaice:
207       Adding separate sea ice albedo, drag coefficients, and HO in Southern
208       Ocean from those in Arctic Ocean.  See *_south in SEAICE_PARAMS.h
209    o SingleCpuIO:
210       fix bug put before chkp61n (May 11), when more than 2 MPI cpu are used.
211    o pkg/seaice:
212       put exchanged variable in (local) common block for MPI+Multi-Threads
213       to work (necessary with exch1, and for now with exch2 too).
214    o verification: to get more experiments tested with mpi, mth and mpi+mth,
215      change tiling of:
216       aim.5l_Equatorial_Channel, aim.5l_LatLon, dome, exp4, global_ocean.90x40x15,
217       hs94.cs-32x32x5, MLAdjust, offline_exf_seaice & tutorial_plume_on_slope
218      update output of exp:
219       exp4, global_ocean.90x40x15(+.dwslp), MLAdjust(all 5),
220       tutorial_plume_on_slope and hs94.cs-32x32x5 (use default rotationPeriod)
221      + ideal_2D_ocean: use default rotation period + test Global_Sum_SINGLECPU
222                       (note: output.txt generated on faulks using only 1 tile)
223    o eesupp & mdsio (SingleCpuIO):
224     - remove MISSING_TILE_IO (from MDSIO_OPTIONS.h), replaced by run-time
225       parameter "W2_useE2ioLayOut" (read from file "data.exch2").
226       Note: was not effective for globalFile & useSingleCpuIO=F; now fixed.
227     - move MDSIO_SCPU.h (pkg/mdsio) to EEBUFF_SCPU.h (eesupp/inc).
228     - fix GLOBAL_SUM_SINGLECPU when using Exch2; re-use same buffers and same
229       gather/scatter S/R as with SingleCpuIO (=> 1 less 2D global RL array).
230    o pkg/exch2:
231     - new code to set-up W2-Exch2 topology (replace matlab-topology-generator):
232       read parameter file "data.exch2" if it exists; otherwise try default regular
233       cube without blank-tile; new header file "W2_EXCH2_SIZE.h";
234     - update matlab-topology-generator (exch2_setup_cs6_print.m) to be compatible
235       with new code (not to be used, just as a backup solution).
236     - add examples (e.g., for lat-lon-cap_120) of parameter file "data.exch2"
237       in utils/exch2/input.
238    
239    checkpoint61n
240    o eesupp & mdsio (SingleCpuIO):
241      - move mapping to global io-buffer inside gather_2d/scater_2d: this save
242        memory (1 less 2D global RL array); skip 1 buffer copy; and only send/
243        receive real*4 array (instead of real*8) to read/write 32.bit files.
244        (new template for gather_2d/scater_2d, new set of S/R MDS_PASS_R4,8toRL,S
245         and remove new mapping S/R)
246    o pkg/mdsio: in preparation for topology-generator within pkg/exch2:
247      - Change declaration of SingleCpuIO buffer, reduced to only 1 dim.:
248        xyBuffer_size, which is set to W2_ioBufferSize from W2_EXCH2_PARAMS.h
249        when using exch2. Add S/R to map global io-buffer to global model array.
250      - uses exch2_global_Nx,y instead of exch2_domain_nxt,nyt.
251    
252    checkpoint61m
253    o write_utils : change WRITE_1D_R8 to WRITE_1D_RL
254      and add 3 other S/R for other types (R4,R8,RS).
255      Change calls to WRITE_0D/1D_R[4,8,S,L] to match the type of argument.
256    o eesupp/inc/CPP_EEMACROS.h (EXCH & GLOBAL_SUM/MAX macros):
257     - ensure suffix (_R4,_R8,_RS,_RL) correspondance between macro and S/R ;
258     - reduce number of macro definitions (keep only those which are used);
259       can always call directly the corrresponding S/R if needed.
260     - everywhere in the code: change macros (EXCH & GLOBAL_SUM/MAX) suffix
261       _R4/_R8 to _RS/_RL when applied to _RS/_RL variable.
262     Fixed wrong type of arg in:
263       atm2d/put_ocnvars.F cheapaml/cheapaml.F ocn_compon_interf/ocn_apply_import.F
264       ctrl/ctrl_map_ini_ecco.F seaice/seaice_do_diags.F seaice/seaice_model.F
265     To fix: global_sum of var in common block is wrong (multi-threaded) in:
266       dic/dic_atmos.F ebm/ebm_area_t.F ebm/ebm_zonalmean.F sbo/sbo_calc.F
267     To fix: aim_v23/aim_do_co2.F (BARRIER & GLOBAL_SUM within bi,bj loops)
268    o adjustment.cs-32x32x1: test "blank tiles" when compiling with mpi; 2nd
269      "nlfs" mpi test is going to stop when checking for unconnected tile egdes.
270    o eesupp/src: new S/R to stop everyone when 1 (or more) Proc. find an error
271    o pkg/exch2: new S/R EXCH2_CHECK_DEPTHS to check that unconnected tile
272      edges are closed (zero depth); might happen with "blank tiles";
273      for now, disabled if using OBCS.
274    o tools/gemake2: delete modifs from March 27-29 2009 (with option "-mpi":
275      link *_mpi files from "MODS" dir) to return to a strait-forward behavior.
276    o move read_write.F to write_utils.F ; new parameter (maxLengthPrt1D)
277      to reduce length of 1.D array print in STDOUT.
278    o adjustment.cs-32x32x1: changed to oceanic test with 1 continent
279      + use 48 tiles (16x8): this will allow to test "blank tiles".
280    o start to test MPI + multi-threaded (change testreport to skip tests
281      where number of tiles do not match).
282    o genmake2: add option "-omp" to turn on Open-MP ;
283      passed to testreport (if using -mth) ; merge few (*+mth) optfiles.
284    o pkg/exch2 (+ utils/exch2): ignore blank tiles (instead of removing them)
285      and keep the original tile numbering. Note: compatible with old
286      W2_EXCH2_TOPOLOGY.h & w2_e2setup.F topology files.
287    
288    checkpoint61l
289    o Overlaps had been forgotten in calculating ijk keys : fixed
290    o fix cyrus makedepend for gcc 4.4
291    o experiment fizhi-cs-aqualev20:
292      switching to new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE)
293      and generate new output. Note: new output is much closer to the old
294      one (v1.8) generated with pgf77 -O2 on Mar 14 2007 than it is from
295      the previous one (v1.9) generated with pgf77 -O0 on Jun 13 2007.
296    o pkg/fizhi:
297     - change to avoid indices going deliberately over array-bounds
298     - remove unnecessary MPI stuff
299     - perpetual spring equinox with "#define FIZHI_USE_FIXED_DAY"
300     - new version of S/R GETPWHERE available with #define TRY_NEW_GETPWHERE:
301       does not go over array-bounds and therefore returns reliable output.
302     - in fizhi_driver.F & fizhi_turb.F, fix "get_alarm" calls:
303       this S/R has 4 output arguments, which are used inside "get_alarm";
304       when it is called with the same variable "ndum" in place of several
305       output arguments, this produces weird side effect inside "get_alarm"
306      (e.g., datein=dates(n) is overwritten by timein=times(n) since both
307       datein & timein, resp. 2nd and 3rd arg., are pointed to the same "ndum"
308       address) and produces error.
309    o tools/gemake2: (March 27-29 2009)
310      with option "-mpi": link *_mpi files from "MODS" dir (this is what
311      testreport does).
312    o lab_sea experiment: change from 2x1 tiles to 2x2 tiles and regenerate output
313    o pkg/seaice: fix bug in new version of S/R SEAICE_LSR.F:
314       update lab_sea.lsr & lab_sea.salt_plume results
315    o pkg/seaice:
316      Major overhaul of the LSOR solver: change discretization from original
317      finite differences to finite volume. The old routine is still in the
318      file seaice_lsr.F and can be turned on with the CPP-flag
319      SEAICE_OLD_AND_BAD_DISCRETIZATION
320      Along with this change, the discretization of the strain rates is changed.
321      The same flag turns on the old discretization in seaice_calc_strainrates.F
322      All verification experiments with seaice are affected (except for
323      seaice_exf_offline); global_ocean.cs32x15/input.icedyn recovers the old
324      results by setting the above flag.
325      Further changes involve changes in defaults:
326      - ALLOW_FLOODING is defined and turned on by default
327      - SEAICEadvSnow = .true. is now the default
328      - SEAICEadvSalt = .true. is now the default
329      - SEAICEadvAge  = .true. is now the default
330      - SEAICE_clipVelocities  = .false. is now the default
331                                         (as per J. Zhang's recommendation)
332      - B-grid, and thus not tested: SEAICE_TEST_ICE_STRESS_1/EXPLICIT_SSH_SLOPE
333        is defined, SEAICE_TEST_ICE_STRESS_1 is renamed into SEAICE_BICE_STRESS
334      - seaice_growth: replace computation of UG by a simple copy from wspeed
335    
336    checkpoint61k
337    o pkg/seaice: a few bug fixes mostly concerning the metric terms:
338      seaice_lsr: fixed a few metric terms,
339                  affects lab_sea.lsr, lab_sea.salt_plume, seaice_obcs
340                  add more debugging diagnostics
341      seaice_evp: removed superfluous many metric terms of FV discretization
342                  of stress divergence
343                  affects lab_sea, lab_sea.hb87
344      seaice_ocean_stress: removed superfluous many metric terms of FV discretization
345                  of stress divergence for non-evp solver
346                  (this part is not tested anywhere)
347      seaice_calc_strainrates: fixed a bug in no-slip boundary conditions,
348                  they were effectively only half slip
349                  affects lab_sea.hb87
350      updated all relevant verification experiments (except lab_sea//output_adm.txt
351        which was left over, but fails at level 7 & 6)
352    
353    checkpoint61j
354    o pkg/seaice: turn a few hard wired parameters into run time parameters
355    o pkg/seaice/exf/monitor: turn netcdf coordinate variable T into model
356      time in seconds as promised by the usints in seaice_monitor and exf_monitor
357    o pkg/mnc: fix the coordinate variables for multi-tile curvi-linear grids
358      that are not cubed-sphere grids
359    o pkg/seaice: fix a bug for the rare case of SEAICE_VECTORIZE_LSR
360    o pkg/ctrl:
361      fix bug in ctrl_depth_ini.F (EXCH_XYZ was applied to 2-D field xx_r_low)
362    o non-hydrostatic (calc_gw.F):
363      fix viscA4 on CS-grid + fix diagnostics: Wm_Diss & Wm_Advec
364      update output of exp. global_ocean.cs32x15.viscA4
365    o remove backward compatibility for thetaMin,phiMin
366      (replaced by xgOrigin,ygOrigin on Jan 27, 2009)
367    o pkg/exf: fix a serious bug in exf_set_uv.F: do a rotation of the
368      interpolated wind field not only for curvilineargrid=.true., but also
369      for a rotated grid (rotateGrid=.true.)
370    o pkg/exf: add capability to bypass interpolation for runoff
371      by setting yet another CPP-flag
372    o eesupp/src, B-grid exchange:
373      add simple (6 tiles, non MPI) CS exch + standard interface S/R.
374    o autodiff
375      new CPP option ALLOW_TAMC_SINGLEPREC_COMLEV
376      allows to switch to single-prec common blocks;
377      corresponding switch occurs in tamc.h, integer isbyte
378      TAF store directivs "byte" and "kind" seem equivalent;
379      Most tamc.h have been updated correspondingly.
380    
381    checkpoint61i
382    o autodiff:
383      fix autodiff_sore/_restore indices for obcs
384      (spotted by I. Hoteit, M. Mazloff)
385    o pkg/autodiff, pkg/ctrl:
386      Add flag to reduce all tapelev I/O to single-prec.
387      In data.ctrl set
388        doSinglePrecTapelev = .TRUE.
389    o model/src/ini_curvilinear_grid.F, new grid-file format without EXCH2:
390      check in hack for SX8 compiler (for dxV, dyU); remove it afterwards.
391    o pkg/shelfice: fix bug with SHELFICEconserve flag, prepare for
392      real fresh water flux (not yet)
393    o pkg/mdsio & rw:
394     - add argument & option to S/R MDS_WRITEVEC_LOC (avoid Open/Close & write-meta)
395     - add simple interface S/R to MDS_WRITEVEC_LOC in pkg/rw: WRITE_GLVEC_RX.
396    o pkg/flt:
397     - replace FLT_INIT by 3-steps standard initialization S/R: readparms,
398       init_fixed & ini_varia.
399     - clean-up & simplify linear interpolation S/R:
400       move flt_bilinear.F -> flt_interp_linear.F ; add arg. myThid.
401     - fix some indices (mainly vertical index) ; add IMPLICIT NONE.
402     - more efficient I/O, using new options of MDS_WRITEVEC_LOC S/R.
403     - add vert. coordinate & horiz. indices to output files.
404     - change vertical position in initial condition, from index to depth [m].
405     - store horizontal (decimal) indices i,j in common block (instead of coord. x,y)
406       (easier to get to a curvilinear grid) ; delX,delY no longer used.
407    o pkg/ggl90: a few modifications:
408     - fix bottom boundary condition, and interpolation of KappaE
409       near top and bottom
410     - use same set of viscosity/diffusivity for TKE/momnetum/tracer
411     - add smoothing option as in Blanke and Delecluse (1993) (--> ALLOW_GGL90_SMOOTH)
412     - add a few options for mixing-length upper limit (--> mxlMaxFlag)  
413    o rename thetaMin,phiMin -> xgOrigin,ygOrigin
414      (maintain temporary backward compatibility, until next checkpoint)
415    
416    checkpoint61h
417    o pkg/diagnostics with "periodic averaging diagnostics":
418      fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
419    o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
420    o pkg/obcs: fix loop ranges for balancing code
421    o pkg/flt:
422     - improve criteria for finding which tile owns a float.
423     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
424    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
425      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
426      with ocean biogeo)
427    o pkg/flt:
428     - do some cleaning and fix the restart ;
429     - add output.txt in flt_example/results to get this pkg tested.
430    o genmake2: add an EXTENDED_SRC option and flag.
431       for now, cannot be turned on on command line (only through genmake_local)
432    o pkg/mdsio: read/write vector:
433     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
434     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
435       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
436     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
437      (drop to 4 digits matching for grad). But this test does not look very
438      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
439    
440    checkpoint61g
441    o pkg/flt:
442      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
443       + make OPTIONS file more standard.
444      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
445      - fix _BYTESWAPIO CPP-Flag
446      - standard reading of file-parameter "data.flt"
447      - fix argument list of S/R FLT_RESTART
448      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
449    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
450    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
451      a still unfixed compiler/optimization bug
452    
453    checkpoint61f
454    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
455      update results of global_ocean.cs32x15.icedyn test.
456    o move getcon.F from model/src to pkg/fizhi.
457    o pkg/exf: add parameter for extrapolation of temp up to the surface
458       and option to prevent negative evap (in bulk_largeyeager04 only).
459    o Prather Advection scheme: fix tracer conservation for divergent flow
460      (e.g., when using NonLin Free-Surface).
461    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
462    o gmredi (Visbeck-variable-K):
463     - add more parameters to Visbeck-variable-K.
464     - use a 5 points average for dSigmaR in Visbeck-K calculation
465       (more "homogenous": same stencil and same weights as in dSigmaH)
466     - update output of ideal_2D_oce experiment.
467    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
468      (#undef REAL4_IS_SLOW)
469     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
470       coordinate variable
471     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
472       (surface forcing fields), removes some of the functionality
473     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
474     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
475       probably not all: copy _RS surface flux fields to RL field before
476       calling DIAGNOSTICS_FILL
477     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
478       real*4 (CALL EXCH_*_RS) versions.
479     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
480       (generate new output).
481    
482    checkpoint61e
483    o gmredi (Visbeck-variable-K):
484      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
485      - change computation of Visbeck-K where Slope > Smax :        
486        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
487        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
488    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
489      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
490    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
491    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
492      does not become too large (to avoid precision problems in implicit-diffusion
493      solver); update ideal_2D_oce output.
494    o pkg ggl90:
495      - in ggl90_cal.F: compute only one set of visc/diff, used to
496        step forward TKE/T/S/momentum
497      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
498        have Prandlt =1)
499    o gmredi (fm07):
500      - add lower limit on Transition layer thickness + lower limit on 1/lambda
501      - allow to set few more params from data.gmredi
502    o pkg ggl90:
503          - add missing sqrt(2) factor in computation of mixing length
504            scale in ggl90_calc.F
505            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
506    
507    checkpoint61d
508    o adjoint modifs
509      - adapt to new field rhoInSitu
510      - allow to revert from StoreDynVars2D, StoreDynVars3D
511        to individual fields
512        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
513    o store 3-D (in-situ) density in commom block (DYNVARS.h)
514     - save 1 rho computation.
515     - no longer modify T & S inland when using down_slope pkg.
516    o gad_som : allow to switch to SOM advection for T & S without corresponding
517      pickup files (using new S/R: MDS_CHECK4FILE).
518    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
519      (for useSingleCpuIO to work in multi-threaded)
520    o pkg/shelfice:
521     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
522       with SHELFICEtopoFile in data.shelfice
523     - move code for reading ice shelf topography and modifying hFacC into separate
524       subroutines of the shelfice package
525     - separate initialisation of "fixed" and "variable" variables
526     - kTopC is not (yet) replaced by kSurfC, although this is possible
527    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
528    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
529      and rename:
530      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
531      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
532    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
533    
534    checkpoint61c
535    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
536      to add mass source/sink of fluid in the interior (3-D generalisation
537      of oceanic real-fresh water flux).
538    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
539    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
540    o new pkg: down_slope
541      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
542      - presently, modify T & S inland (dwnslp_calc_rho.F).
543        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
544      - implementation for ocean in P-coords not tested.
545      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
546    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
547      (to facilitate conversion of oceanic pkg to p-coordinate).
548    o change FIND_RHO to FIND_RHO_2D :
549      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
550    o new pkg: cheapaml
551    
552    checkpoint61b
553    o exch2:
554      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
555      - no longer depend on the order sequence (N,S,E,W).
556      - 3rd exchange no longer needed (tested with 24 tiles).
557      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
558      - exch_UV_A-grid readily available (but not yet tested).
559      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
560      (both are no longer needed) in exch_uv: no effect in forward run; but
561       get truncation error differences with adjoint exch.
562    o exch2:
563     - change index-bounds storage (moved from target to local tile,
564       more intuitive this way) ; rename/remove some variables.
565     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
566    
567    checkpoint61a
568    o exch2/matlab-topology-generator:
569      fix bug in index bounds for N-S internal exchange (hard to tell if this
570      had any effect on the solution).
571    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
572      is exceeded
573    o testreport: modify syntax of awk, so that it works also with
574      awk, and not only with nawk and gawk
575    
576    checkpoint61
577    o autodiff
578      Change default for TAF usage by removing argument '-nonew_arg'
579      This changes TAF subroutine argument list (ordering of active var.)
580      Omission of this flag leads to incompatibility w.r.t. TAMC
581      To restore TAMC-compatibility, need following modifs:
582      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
583      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
584      Tested TAF version is 1.9.22
585      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
586    
587    checkpoint60
588    --->>> This is the last checkpoint for which generating the adjoint
589    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
590    --->>> by default.
591    --->>> Future checkpoints will ommit this flag by default.
592    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
593    o pkg/grdchk: Add gradient check to etan0 perturbations.
594    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
595    o pkg/autodiff: more flexibility in zeroadj.
596      model/src: modifying do_oceanic_phys.F accordingly.
597    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
598    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
599      special setup of gmredi for which the adjoint is stable
600      enough for parameter optimization.
601    o bridging the gap between eddy stress and GM.
602      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
603          along with a change in CPP option (now ALLOW_EDDYPSI).
604      -> when using GM w/ GM_AdvForm:
605          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
606          is applied either in the tracer Eq. or in momentum Eq.
607          depending on data.gmredi (intro. GM_InMomAsStress).
608      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
609      The key modifications are in model/src/taueddy_external_forcing.F
610      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
611    
612    checkpoint59r
613    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
614      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
615      fix option to read coriolis(@ cell-corner) from files with CS-grid.
616    o pkg/mnc: add some attributes to standard 1D-coordinate variables
617    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
618      mass points, when using mnc for output
619      - add runtime parameter (missing_value, missing_value_int) to override
620        default (which is the value of getcon('UNDEF'))
621    o pkg/mnc: prepare mnc for the actual use of missing values with the
622      diagnostics package: small fix in mnc_cw_readwrite.template and more
623      initialisation of never used fields
624      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
625      versions
626    o pkg/thsice/thsice_ini_vars.F added default initial values so that
627      thermodynamics sea ice solver does not blow up when some initial fields
628      are missing.
629    o move from external_forcing_surf.F to ini_forcing.F
630      the p-coord. hack consisting in using pLoad to set phi0surf ;
631      update output of tutorial_global_oce_in_p (affected @ truncation level).
632    o Freshen up a bit hs94.1x64x5, notably:
633      remove rotationPeriod and tRef=5*0. (adjoint only), and add
634      exactConserv=.TRUE.
635    o pkg/generic_advdiff:
636      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
637      applies to files where Temperature & Salinity 2nd Order moments are used.
638    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
639      this uses a dynamically allocated internal state data structure
640      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
641      and requires a fortran 90 compiler
642    
643    checkpoint59q
644    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
645       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
646    o Refresh tutorial_global_oce_biogeo, notably:
647      - change bathymetry (put back seamounts in ACC, use hFacs)
648      - change EOS (POLY3 --> JMD95Z)
649      - use Bryan-Lewis vertical diffusivity
650      - use multidimensional advection
651      - remove old virtual virtual in dic pkg, now done through ptracer pkg
652      - change a couple of parameters in dic pkg
653    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
654    o pkg/obcs: change default to OBCSfixTopo = .true.,
655      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
656      - replace "debugMode" with "debugLevel .GE. debLevB"
657    o implementation of TAF directives for gchem,cfc,dic
658    o remove "exp5" (replaced by tutorial_deep_convection).
659    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
660      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
661      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
662      --> changes results in exp4, seaice_obcs
663    o tutorial_deep_convection :
664      update the set-up and increase resolution and domain size ; start
665      from pseudo initial conditions = output at t=120mn in order to see
666      something happening when running testreport.
667    o pkg/seaice: add os7mp as an advection scheme
668                  add check for advection schemes
669                  add a flag for restoring T and S underneath sea ice
670    o pkg/my82: add netcdf-support and diagnostics
671    o thsice pkg:
672      - Now hsMax limits snow height by turning it into ice following
673        flooding scheme (and now conserving energy)
674      - Slight rewriting of the formula in thsice_calc_thick.F
675      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
676      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
677    
678    checkpoint59p
679    o gchem / dic / cfc :
680      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
681      - add new parameter files: "data.dic" & "data.cfc" ;
682      - various re-arrangement in initialisation & header file ;
683      - fix tutorial_global_oce_biogeo for multi-threaded test.
684    o pkg/dic: test for "pickup_dic" file when restarting ;
685      if no pickup-file, can restart with a re-initialised pH (same as it did
686      before) providing pickupStrictlyMatch is set to False.
687    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
688      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
689    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
690      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
691    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
692     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
693       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
694    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
695       scheme to use for vorticty-term ;
696     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
697       (with default selectVortScheme, return to original discretisation)
698     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
699    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
700    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
701      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
702      also fix diagnostics VISCAHW & VISCA4W.
703    
704    checkpoint59o
705    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
706    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
707      move a few statemens out the main loop into separate loops
708    o pkg/shelfice:
709      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
710        (kg/m^2/s), does not break tests, because in verification/isomip,
711        rhoConstFresh=rhoConst (by accident)
712      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
713      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
714        new file model/src/seawater.F, so that they are available for all pkgs.
715      - convert potential temperature into in-situ temperature. This changes the
716        isomip tests => update tests
717    o add a flag writePickupAtEnd (default=true) to be able to suppress
718      writing a pickup at the last timestep
719    o tools/mpack-1.6 :
720      - disable automake (not working) and autoconf (not needed).
721      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
722        also cleaner with much less compilation warnings.
723    o pkg/profiles:
724      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
725      (for "less than 32 characters name" compiler requirement)
726    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
727      conditions that have a different sampling frequency than S/T/U/V obcs
728    o pkg/diagnostics (stats-diags):
729      - fix global Min/Max in case 1 processor get only empty tiles
730    o genmake2: replace (4 times)
731         make genmake_tc_1.o >> genmake_warnings 2>&1
732      with
733         COMM="$CC $CFLAGS -c genmake_tc_1.c"
734         echo $COMM >> genmake_warnings
735         $COMM >> genmake_warnings 2>&1
736      to make genmake2 always see the value of CC as specified in the optfile.
737    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
738      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
739      - modify verification advect_cs test to test SOM-advection on CS-grid.
740    o pkg/ctrl:
741      - Rewrite of ctrl_map_ini_ecco.F,
742        introducing a generic routine (ctrl_map_ini_gen.F).
743      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
744    
745    checkpoint59n
746    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
747      number in dedicate array "hdiag":
748      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
749        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
750      - many small changes (integer format) for large number of diagnostics
751      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
752        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
753    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
754      usingSphericalGrid, this allows to define the rotated grid coordinates
755      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
756      geographical coordinates according to the inverse of the rotation defined
757      by the Euler angles, so that Coriolis parameter and online-interpolation by
758      exf works with the geographical coordinates on XC/YC/XG/YG.
759      Naturally, this feature does not work with all packages, so some
760      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
761      profiles), because there the coordinates are assumed to be regular
762      spherical grid coordinates.
763    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
764      - introduce isopycnal diffusion coefficient control.
765    o tools/adjoint_options:
766      - additional control vector components.
767    o pkg/mnc: have mnc create marginally meaning full coordinate variables
768      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
769    o pkg/mypackage:
770      - add example of read/write pickup for state-var ;
771      - add entry points to the main code for state-vars diags & write-pickup.
772    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
773      transitions for useExfYearlyFields
774      - add new subroutine that determines the file to read from for
775        use*YearlyFields = .TRUE. and .FALSE.
776      - add a verification experiment to global_with_exf that tests
777        useExfYearlyFields with USE_EXF_INTERPOLATION defined
778    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
779      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
780      subroutines (which could be generated from a template, because they are
781      almost identical), for now they are included in obcs_prescribe_read.F for
782      simplicity
783    o pkg/exf:
784      - add a little more diagnostic to exf_interp_read (in analogy to
785        mds_read_field, can be turned off with debugLevel < debugLevA=1)
786      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
787        ugly but fast by unrolling short inner loops, inserting a unroll=8
788        directive in routine lagran, and splitting a loop and making do while the
789        outermost loop (the latter requires the intoduction of index arrays)
790    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
791    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
792      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
793    o verification/seaice_obcs: updated for restart test and latest options
794    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
795      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
796      for now this is only available for the C-grid code and also within
797      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
798    
799    checkpoint59m
800    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
801      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
802    o gad_som : fix flux output (& diagnostics) to have same units as other  
803      advection scheme fluxes (was previously multiplied by deltaT).  
804    o added verification/seaice_obcs both to test seaice open boundaries
805      and to provide an example matlab scrpt for generating them
806    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
807    o pkg/salt_plume: clean up salt_plume_frac.F to
808      remove redundancy in PlumeMethod 1 and 4
809    o pkg/kpp: added saltplume diagnostics
810    o pkg/obcs and pkg/seaice:
811      - do not set uice and vice to zero when OB*icefile are unspecified
812      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
813      - moved seaice tracer obcs after call to seaice_growth
814    o pkg/salt_plume: added various options for salt plume depth
815      criterion and for vertical distribution of the salt
816    
817    checkpoint59l
818    o pkg/ptracers: new version of ptracers pickup:
819      read meta file and write only fields which are needed to restart.
820      ( same logic as main pickup file ; also using pickupStrictlyMatch )
821    o pkg/seaice:
822      - add timescale for melting due to warm mixed layer as a means of
823        setting SEAICE_availHeatFrac more conveniently
824      - add a CPP-flag/runtime parameter check for flooding algorithm
825      - reformulated availHeat in seaice_growth.F to be independent of AREA
826    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
827      unit changes
828    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
829    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
830      SX vector computer.
831    o pkg/seaice:
832      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
833        seaice forcing fields can now be read only through pkg/exf
834      - removed some unused halos
835    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
836    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
837      or U/VICE from U/VWIND before computing U/VSTRESS
838    
839    checkpoint59k
840    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
841      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
842    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
843      all experiments pass when compile with un-initialised var. checking option.
844    o added pkg/salt_plume
845    o script to test restart (for now, in MITgcm_contrib/jmc_script)
846    o pkg/seaice: new read/write pickup version.
847      read meta file and write only fields which are needed to restart.
848      ( same logic as main pickup file ; also using pickupStrictlyMatch )
849    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
850    o lab_sea.hb87: modify the domain & update output.hb87.txt :
851      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
852      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
853      process. Fixed here by closing the domain at the Northern boundary.
854    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
855    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
856      a set of consecutive levels in/from a 3-D array.
857    o pkg/ptracers:
858      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
859      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
860    
861    checkpoint59j
862    o in pkgs: dic, obcs, offline, rbcs:
863      standard way to compute coeff. for time interpolation between 2 time reccords
864      which retains full precision (& make results less dependent on compiler).
865      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
866    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
867      packages instead of reading ice cover and wind speed separately
868    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
869     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
870      to allow to compile customized code before the update)
871    o cleaning-up:
872      - fix CPP instruction syntax in pkg/obcs
873      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
874        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
875      - fix some threads issue in IO parts.
876    o pkg/dic:
877      - add tons of "_d 0" (--> much better testreports !)
878       and then update outputs of tutorial_global_oce_biogeo
879    o pkg/mom_fluxform:
880      add a special version of momentum advection intended to conserve momentum
881      next to a bathymetry step or a coastline edge. (default = off = #undef)
882    o new read/write pickup version:
883      - for now, only implemented for main (mdsio) pickup file.
884      - write out only what is needed to restart; merge pickup_nh , pickup_ph
885        and main pickup together.
886      - read meta file; read only what is needed to restart; stop if a field
887        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
888        if it make sense (even if the restart is not perfect).
889      - if no meta file, assume that pickup to read corresponds exactly to
890        a pickup that would currently be written.
891      - read pickup written in the old format (until checkpoint59i) if it
892        recognizes an old meta file (no field-list).
893      - add a meta file in exp. which starts from a pickup: 2 cases:
894        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
895         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
896        b) a meta file describing the content of the associated pickup file
897         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
898    o pkg/mdsio & pkg/rw:
899      - new routine to read a meta file ; new set of routine to read
900        Multiple-fields file (with meta file).
901    o added open boundary conditions capability for seaice
902        HSNOW, HSALT, UICE, and VICE
903    
904    checkpoint59i
905    o adjoint:
906      * fix multiDimAdvection adjoint
907        (partial recomputation problem by TAF for fVerT(:,:,kDown)
908        and comlev1 size definition (maxpass vs. max. number of tracers)
909      * verification/global_ocean.90x45x15 adjoint now tests
910        NLFS and multiDimAdvection using DST3 (=30)
911      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
912    o pkg/kpp: add "_d 0" to real constant (if missing);
913      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
914      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
915    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
916      for internal parameters related to restart process (formerly from PARAMS.h)
917      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
918    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
919      as argument. (only atm2d & obcs write_pickup have not yet been updated)
920    o pkg/monitor:
921      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
922      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
923      - account for deep Atmosphere factor and density factor (anelastic)
924    o added open boundary conditions capability for seaice HEFF and AREA
925    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
926      thermodynamics
927      - requires a little reorganization, which affects the testreport results
928        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
929        so that now the conservative form is tested
930      - add a few comments
931    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
932    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
933    o add new diagnostics to seaice: advective, diffusive fluxes (only for
934      multidim-advection, for scheme 2 they are not filled) and transports,
935      thermodynamic growth rates
936    o change units of EmPmR (inside the code, + within coupling interface)
937      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
938      Affects results @ truncation level (cg2d match) and update output of
939       experiments: lab_sea(6), global_ocean.90x40x15(10),
940      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
941      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
942      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
943      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
944    
945    checkpoint59h
946    o pkg/exf:
947      - improve vectorization by moving if-statement out of loops in
948        exf_mapfields, exf_radiation
949      - exf_bulkformulae.F: introduce 2D fields and vectorize code
950    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
951    o testreport:
952      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
953        monitor & update offline_exf_seaice exp. output.
954      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
955    o pkg/seaice:
956      - bug fix in the evp solver: boundary conditions were affected be
957        masking of zMax/zMin (changes results)
958      - minor bug fix in boundary conditions in seaice_calc_strainrates
959        (changes results for no_slip)
960      - seaice_lsr.F: make interpolation of eta dependent on boundaries
961      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
962      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
963        stress formulation and no-slip boundary conditions
964    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
965      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
966    o pkg/seaice: a first HSALT time stepping equation has been checked in
967    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
968      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
969      without requiring DO-IF statements
970    o pkg/thsice:
971      use continuous power-law function for partition of energy between lateral
972      melting/freezing and thinning/thickening ; old code using step function
973      still available with #undef THSICE_FRACEN_POWERLAW
974      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
975    o testreport: change AD testing : check against results/output_adm.txt
976      using same scripts as for forward test.
977    
978    checkpoint59g
979    o adjoint testing: in preparation for changing testreport:
980      - output format: cost and grad written on separated lines
981      - ad output results in directory "results" (instead of "results_ad")
982    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
983    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
984    o pkg/ecco: allow user defined cost function contributions
985    o testreport:
986      Allow to choose (per experiment) the list of tested output variables
987       and the main variable (used to issue a pass/FAIL ) ;
988      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
989      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
990      Also modify printing of summary:
991       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
992       b) echo the list of tested variables in the individual summary.txt of
993          each experiment.
994    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
995      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
996      (but still depend on the tile decompostion of the domain).
997    o pkg/seaice: change a discretization detail to make the B-grid code
998      "more symmetric". This change is likely to remove all "ridges/leads" that
999      where quasi-aligned with the grid in B-grid solutions. It may also be
1000      the solution to the stress coupling issues with the B-grid.
1001    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
1002      remove .cvsignore from input dir. (since testreport no longer run here).
1003    o pkg/thsice:
1004     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
1005     - fix reshaping of sea-ice just after advection:
1006       melt all the ice only if ice-volume is too small.
1007     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
1008       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
1009     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
1010    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
1011      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
1012    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
1013      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
1014      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
1015      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
1016      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
1017      -> update output.txt
1018    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
1019     this affects truncation error: -> update output.txt of exp:
1020      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
1021      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
1022    
1023    checkpoint59f
1024    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
1025    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
1026      a bounded range (in forward mode)
1027    o pkg/ecco, ctrl, autodiff and mom_common:
1028     internal parameter controls, completements of implementations
1029    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
1030    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
1031      (not seem any difference in testing results).
1032    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
1033       at face corners.
1034    o pkg/generic_advdiff:
1035     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
1036      loop range indices for computing vertical advection tendency
1037      and do the calculation in the interior only (no overlap) ;
1038      for now, only implemented for SOM advection (to save CPU time).
1039     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
1040    o exch2 adjoint
1041      First set of changes:
1042      - add exch2 hand-written adjoint templates
1043      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
1044        This will require cleanup in pkg/autodiff/*.F
1045        (changed routines currently kept separate in verif. code/)
1046      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
1047        that used to hide exch2 or cubed-sphere specific code
1048        (commented via 'cph-exch2')
1049    o pkg/seaice
1050      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
1051    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
1052       output of global_ocean.cs32x15.thsice .
1053    
1054    checkpoint59e
1055    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
1056      for B-grid vector (not yet tested) and C-grid vector (<- only used
1057      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
1058    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
1059      (#ifdef ALLOW_SALT_PLUME)
1060    o gather_2d/scatter_2d: removed halo regions
1061    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
1062      scheme and the corresponding test case (under front_relax dir). For now,
1063      only available with Skew-flux form and not yet tested in realistic set-up.
1064      adjoint: store directives updated, but gradient checks deteriorated,
1065      so maybe GM/Redi adjoint is now broken.
1066    o seaice adjoint
1067      * add AREA, HEFF, HSNOW as control variable
1068        (should not change lab_sea results)
1069      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
1070    o pkg/seaice:
1071      * added computation of saltFlux in seaice_growth;
1072        For time being, sea ice salinity is assumed constant
1073        contribution of snow flooding to freshening of sea ice is neglected.
1074        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
1075        defaults to 0.0 in order to maintain backward compatibility.
1076        Typical values for SEAICE_salinity are 4 to 10 g/kg.
1077      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
1078      * added SEAICE_availHeatFrac, which specifies fraction of surface level
1079        heat content used to melt or grow ice
1080      * commented out cap of HICE: it helps keep ice thinner
1081      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
1082      * applied OBCS T/S mask to HEFFM sea ice mask
1083    
1084    checkpoint59d
1085    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
1086     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
1087     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
1088    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
1089     and change default value of parameter "GM_Small_Number";
1090     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
1091       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
1092       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
1093    o pkg/ecco: cost function when applying pkg/smooth to controls
1094    o pkg/ctrl: add forcingPrecond run time parameter
1095    o pkg/seaice:
1096     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
1097     - fix bug in metric terms of u-equation in LSR solver (implicit part),
1098       changes verification/lab_sea
1099     - rearrange implicit part of u-equation in LSR solver to make it easier to
1100       read, understand, and debug. This causes changes at the truncation level.
1101     - fix (serious) bug in the boundary conditions (sign error in the implicit
1102       part) of the LSR solver. Changes all LSR results.
1103     - fixed problem with HSNOW initialization to avoid thick snow when AREA
1104       is initilized with small values - does not change lab_sea results.
1105     - added HsnowFile initialization capability
1106    o pkg/smooth: addition to model/src and pkg/ctrl so allow
1107     initialization of pkg/smooth and application to control vector
1108    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
1109    o dependencies: pkg/profiles requires pkg/cal
1110    o pkg/profiles:
1111     - added option ALLOW_PROFILES_GENERICGRID
1112         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
1113         that interpolation information (grid points and coefficients) is provided
1114         within the netcdf input files.
1115         -> sample matlab scripts can be found in MITgcm_contrib/gael
1116         that allow you to prepare netcdf input files.
1117     - also modified: cleaner include statements, cleaner error print statements,
1118       cleaner stops when error, and more tests of the netcdf input files consistency.
1119    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
1120    o pkg/seaice:
1121     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
1122       requires a new routine: seaice_diagnostics_fill.F
1123     - make sure that seaice does not move if not forced (pressure replacement
1124       method, Hibler and Ip, 1995), changes results
1125     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
1126     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
1127       It is turned off by default (=-1.), because it changes the results.
1128     - make it possible to read AREA from a file, too.
1129    
1130    checkpoint59c
1131    o add S/R and diagnostics for oceanic mixed-layer depth
1132    o move GMRedi call after all vertical mixing schemes (including KPP)
1133    o pkg/thsice:
1134     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
1135      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
1136    o pkg/obcs:
1137     - bug fix for balance code
1138    o pkg/seaice:
1139      - allow values of SEAICE_elasticParm > 1
1140      - add new parameter SEAICE_evpTauRelax as an alternative
1141        to SEAICE_elasticParm
1142      - make lsr boundary conditions free slip (by default), changes result
1143      - add code for no slip boundary conditions for lsr
1144      - set minimum of zeta to zero (and not 4e8) (changes results)
1145      - add a cap on AREA after advecting AREA if seaice_growth is not called
1146    o change calculation of Visbeck K:
1147      - no longer depend on tapering scheme; instead, compute slope (limited
1148        by GM_maxSlope). this is equivalent to what was comuted before with
1149        clipping or linear tappering.
1150      - fix vertical averaging (wrong by 1/2 level)
1151      - leave the old version (but will not be maintained) within
1152        #ifdef OLD_VISBECK_CALC / #endif
1153      - update output of exp. ideal_2D_oce
1154    o change error catch in calc_r_star to improve vectorization
1155    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
1156      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
1157    o adjoint:
1158      Re-organized adjoint checkpointing according to Matt Mazloff
1159      (but with modifs/completions/cleanups)
1160      Storing is now bundled into large arrays to optimized I/O
1161      (and second step in cleanup of the_main_loop)
1162    
1163    checkpoint59b
1164    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
1165      - export/import (between ocean & coupler) fields needed for ocean DIC.
1166    o pkg/seaice:
1167      - get rid of three more exchanges seaice_calc_viscosities (required
1168        different loop boundaries in seaice_lsr and seaice_ocean_stress)
1169      - bug fix in seaice_ocean_stress (update of lab_sea required)
1170      - reduce loop boundaries to necessary minimum also in seaice_evp
1171      - go back to the old way of computing deltaC/Z as the adjoint likes that
1172        better
1173    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
1174      passive tracer to an Age Tracer) + update output.txt
1175    o pkg/exf:
1176      - implement A-grid / C-grid selection for wind-stress input files.
1177      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
1178      for now, in exf_bulk_largeyeager04.F only :
1179      - change implementation for case where windspeed + 2. components wind-stress
1180        are read-in. AND use rhoConstFresh to convert evap.
1181    o pkg/seaice:
1182      - use correct EXCH_UV for wind-forcing (on A-grid).
1183      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
1184        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
1185    o pkg/exf:
1186      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
1187      EXF_INTERPOLATION:
1188      - merge global_with_exf/code version of exf_interp_read.F
1189        to the main code ;
1190      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
1191        reading the file ; Important: This options needs to be defined to recover
1192        previous code.
1193        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
1194      - no longer loose real*8 precision along the way when using exf_iprec=64.
1195    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
1196      - change discretisation of evp-solver in order to avoid another exchange
1197        (changes lab_sea) and clean up a little
1198      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
1199        help the adjoint (this also changes the results slightly)
1200      - add a few "_d 0" where they had been missing in seaice_evp.F
1201      - cleaning up: remove unused seaice_calc_rhs.F
1202    o pkg/exf: some cleaning-up:
1203      - change various "constants" into runtime parameters
1204      - cleaned-up Large&Yeager04 routine which should eventually
1205        replace exf_bulkformulae.F (changed names of S/R and CPP)
1206        and merged various ALLOW_ATM_WIND options
1207     only used with thsice pkg (in thsice_get_exf.F):
1208      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
1209        which are used when useStabilityFct_overIce=TRUE (= the default)
1210      - change default values of ice & snow emissivity and scale downward LW
1211        by ice & snow emissivity.
1212    o pkg/thsice:
1213     fix few little problems, in thsice_calc_thickn.F:
1214      - growth vertically (and not laterally) if iceFrac == iceMaskMax
1215      - melt only laterally if hIce < hThinIce (as the comments say)
1216      and in thsice_extend.F:
1217      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
1218      - start to form ice as soon as the minimum ice-volume is reachable.
1219     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
1220      and cpl_aim+ocn
1221    o pkg/kpp
1222     - move computation of surface related input fields to KPP into a new
1223       subroutine kpp_forcing_surf.F
1224     - remove wrong (within bi,bj loops) EXCH calls.
1225     - little cleaning (add argument myThid in last position, cvs header ...)
1226     - for now, fix conservation problem by exchanging KPPviscAz (may not
1227       be the best fix)
1228    o pkg/seaice
1229     - check for inconsistent evp parameter/cpp-flag combination
1230     - remove leftover errIO flat for obsolete name list error handling
1231    o OpenAD
1232     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
1233    
1234    checkpoint59a
1235    o pkg/seaice: some parameter clarifications and a little bit of clean up
1236    o pkg/thsice: rename run-time parameters:
1237       himin       -> hIceMin
1238       himin0      -> hThinIce
1239       hihig       -> hThickIce
1240       i0          -> i0swFrac
1241       transCoef   -> bMeltCoef
1242       frac_energy -> fracMelting
1243      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
1244       with default values (for now) that do not change the results.
1245      remove old version of thsice vars advection in pkg/seaice.
1246    o in FFIELDS.h:
1247      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
1248      - make pLoad & sIceLoad always available (but still only used if
1249         ATMOSPHERIC_LOADING is #define).
1250    o pkg/kpp: replaced _KPP_RL with _RL
1251    o bug fixes for vertical diffusivity computations when both KPP and
1252        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
1253        are no longer updating the vertical diffusivity array
1254        (passed as argument) but are (re-) setting those arrays.
1255    o pkg/seaice: fix bug in evp solver, while doing that
1256      - change (improve?) discretization of stress computations for both
1257        cgrid-lsr and evp solver
1258      - add a new routine to compute strain rates
1259      - the above changes lab_sea results
1260      - add no slip conditions for evp solver (off by default), lsr-version
1261        may follow
1262      - fix exchange for shear at Z-points (does not change lab_sea)
1263      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
1264        (to force the user to pick a time step since there is not "safe" way
1265        of choosing it)
1266      - add principal stress diagnostics
1267      - rearrange fields for evp a little to avoid having to call a: too many
1268        exchanges and b: exchanges for stress trensor components which we do
1269        not have.
1270      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
1271        of evp, complete rewrite for lsr case (latter is does not yet work
1272        in all cases)
1273    o pkg/kpp: add code to have mixing in shelf ice caverns
1274      - add myThid to all kpp routines (long overdue)
1275    
1276    checkpoint59
1277    o pkg/exf:
1278      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
1279        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
1280      - move exf header files from lower_case.h to UPPER_CASE.h ;
1281        add missing cvs Header & Name
1282      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
1283      - add namelist param. selectStressGridPosition, exf_monFreq
1284      - retire many _CLIM routines, and remove data.exf_clim
1285        + params moved to data.exf
1286        + climsst, climsss now handled by exf_set_gen, i.e.
1287          climss?period=0 refers to constant field,
1288          climss?period=-12 to monthly forcing
1289      - split up namelists in data.exf
1290    o pkg/seaice:
1291      - remove seaice_exch and seaice_exch_uv
1292      - remove superfluous exchange of theta
1293      - add myThid to seaice_budget_ocean/ice
1294      - add new interface for atmospheric wind forcing (C-grid only)
1295        + new routine
1296        + two new field (taux, tauy for stress over ice)
1297        + removed one global field (DAIRN) for C-grid case only
1298    o pkg/thsise
1299      - 2nd set of modifs for thsice adjoint in conjunction with exf
1300    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
1301    
1302    checkpoint58y_post
1303    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
1304      vertical diffusivity, similar to that in MOM4; turned on using
1305      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
1306      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
1307    o Added capability for 3D specification of background vertical diffusion
1308      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
1309      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
1310      "data" file that contains the 3D vertical diffusivity coefficients.
1311    o ice dynamics (pkg/seaice) with thsice thermodynamics:
1312      - add code within pkg thsice to advect & diffuse sea-ice fields
1313      similar to (and will replace) what has been added in  seaice_advdiff.F,
1314      but: - conserving Mass, Heat & Salt.
1315           - better when using non-linear advection scheme (not yet fully tested)
1316           - can also be used in atmospheric set-up (for now, only the diffusion).
1317    
1318    checkpoint58x_post
1319    o IO option for global-file compact format:
1320      - add options when generating topology (utils/exch2/matlab-topology-generator)
1321      - add I/O capability (pkg/mdsio).
1322      - adapt utils/matlab/rdmds.m to read this format.
1323      for now long-line format not yet supported by pkg/mdsio (& exch2).
1324    o shelfice: add a few diagnostics
1325    
1326    checkpoint58w_post
1327    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
1328      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
1329      (and replace horiVertRatio in NH code).
1330      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
1331                         and tutorial_plume_on_slope (sensitive to truncation)
1332    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
1333      directly to drive seaice model (C-grid only)
1334    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
1335     - reintroduce computation of wind from stress,
1336     - compute tau (in exf_bulkformulae.F) from windstress averaged to
1337       mass points to avoid tau = 0
1338     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
1339    o rdmnc.m: make it work with "global" files created with gluemnc
1340    o rdmnc.m : some improvements in dealing with singleton dimension
1341      (tested on all testreport mnc output files).
1342    o genmake2: disable pkg/profiles if netcdf test fails.
1343    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
1344    o move call to cal_readparms up to make calendar parameters/variable available
1345      to all packages
1346    
1347    checkpoint58v_post
1348    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
1349      useDynP_inEos_Zc tested.
1350    o pkg/exf: changes to properly interpolate/mask/scale initial fields
1351    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
1352      and portions thereof.  See read_cs.txt for description and examples.
1353    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
1354      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
1355      following the great-circle arc between those 2 points.
1356    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
1357      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
1358    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
1359     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
1360     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
1361     - still needs work (not working with some options ; efficiency to improve)
1362       and serious testing.
1363     - use this scheme for temperature & salinity in 2 advection test exp.:
1364       advect_xy & advect_xz, respectively.
1365    
1366    checkpoint58u_post
1367    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
1368    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
1369    o testreport: add option "-skipdir" to skip some test.
1370    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
1371      momentum calculation.
1372    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
1373    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
1374      remove checkpoint.F and the_correction_step.F (no longer used);
1375      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
1376    o add option (linFSConserveTr) to correct for tracer source/sink due to
1377      Linear Free surface
1378    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
1379    o pkg/thsice: fix reading mnc-pickups
1380    
1381    checkpoint58t_post
1382    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
1383    o pkg/mdsio:
1384     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
1385       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
1386       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
1387     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
1388     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
1389       either MDS_READ_FIELD or MDS_WRITE_FIELD )
1390     - new S/R (to replace MDSWRITEMETA), which allows to write more
1391       informations (variable names, time ...) to meta files.
1392     - modify rdmds.m to give back the meta file content.
1393    o pkg/diagnostics: change vertical interpolation to be safer, and more
1394       flexible (define p-levels to interpolate to in data.diagnostics);
1395      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
1396       diagnostic pointer.
1397    o pkg/seaice: more cleaning up of seaice_growth, added many comments
1398    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
1399    o fix multi-category seaice:
1400     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
1401       SEAICE_MULTICATEGORY
1402     - fix short wave heat flux
1403    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
1404       and allow to use EVP solver. Change forward lab_sea: test both EVP
1405       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
1406    o Initial check-in of lab_sea adjoint
1407      (very similar to natl_box_adjoint/code_seaice)
1408      * used C-grid and EVP solver
1409      * used KPP, GM/Redi
1410      * uses inAdExact=.TRUE.
1411      * gradient checks fail for both ADM and TLM
1412        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
1413        f.d. gradients actually seem more problematic than ADM, TLM gradients;
1414        issue is related to forward mismatch between g77 an ifort
1415    o pkg/seaice: overhaul of thermodynamics
1416     - growth.F and groatb.F are replaced by new routine seaice_growth.F
1417     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
1418     - move a few global fields out of SEAICE.h into seaice_growth.F and
1419       make them 2D (FICE/QNETO/ ...)
1420     - remove FO (it is the same as QNETO)
1421     - introduce a few local fields to avoid modifying external fields such
1422       as atemp, etc.
1423    
1424    checkpoint58s_post
1425    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
1426      changed exf_set_gen.F so that
1427        genperiod=0 means input file is one time-constant field and
1428        genperiod=-12 means input file contains 12 monthly means
1429    o CG2D: use pre-computed solver main-diagonal (stored in common block);
1430      this affects truncation error ; generate new output file for exp. which
1431      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
1432        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
1433        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
1434        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
1435        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
1436        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
1437    o start implementation of deep-atmosphere and anelastic formulation
1438    o verification: remove 2nd copy of input files and use script "prepare_run"
1439      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
1440    o mom_common/vecinv/fluxform: fix a few initialisation isssues
1441    o profiles: fix for multithreaded case
1442    
1443    o diagnostics: rename few diags:
1444      s/'PRESSURE'/'RCENTER '/g
1445      s/'TICE    '/'oceFreez'/g
1446      s/'TAUX    '/'oceTAUX '/g
1447      s/'TAUY    '/'oceTAUY '/g
1448      s/'SWFLUX  '/'oceQsw  '/g
1449      s/DIFx/DFxE/g
1450      s/DIFy/DFyE/g
1451      and add few ocean-forcing diagnostics:
1452      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
1453    o modifications to pkg/seaice/growth.F and budget.F, which change results of
1454      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
1455      as actual snow thickness.  It now refers everywhere to effective snow
1456      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
1457    
1458    checkpoint58r_post
1459    o modifications to pkg/seaice/growth.F, which change results of
1460      lab_sea experiment: fixes pertain to melting snow over open water, to
1461      masking EVAP under sea ice, and to using the correct AREA variable for
1462      computations of EVAP, PRECIP, HSNOW, and GHEFF
1463    o add ability to read bathy, salt, and theta using MNC (off by def)
1464    o add flooding algorithm and advection of HSNOW for pkg/seaice;
1465      both are turned off by default and do no change any results
1466    o seaice advection with pkg/thsice: a step toward the use of non-linear
1467      advection scheme, but #ifdef or commented out for now (requires more EXCH).
1468    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
1469      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
1470      in natl_box (affects results @ truncation level: update output.txt)
1471    o multi-threading and IO:
1472      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
1473      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
1474        (needed to work with SingleCpuIO): tested in all verif. exp.
1475    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
1476      affects the results (but none of the verification test uses this scheme).
1477    o Adding some pkg/diagnostics capability to pkg/seaice
1478      (will certainly be subject to changes)
1479    o ctrl: adding new control variables:
1480      lwflux, lwdown, evap, snowprecip, apressure, runoff
1481    
1482    checkpoint58q_post
1483    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
1484      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
1485      high_res_cube configuration by 4% on Columbia.
1486    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
1487      add (in global_with_exf/code) a version of EXF_INTERP_READ without
1488      dynamical allocation (seems to work in multi-threaded).
1489    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
1490      single CPU io) so that TAF does not have to see EESUPPORT.h
1491    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
1492    
1493    checkpoint58p_post
1494    o obcs: stop if obcs is used with useCDscheme = .true.
1495    o shelfice:
1496     - fix a sign error so that no slip at shelfice interface works
1497     - remove stop for combination non-hydrostatic code and shelfice. That does
1498       not mean, that the results are correct, but at least they are numerically
1499       stable
1500    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
1501    o added adjoint exch routined for all exch*3d* routines
1502      and updated flow directives
1503    
1504    checkpoint58o_post
1505    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
1506      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
1507    o change controling S/R for writing pickup file (new S/R do_write_pickup)
1508      and clean-up reading/writing of pickup files.
1509    o fix local version of read/write pickup (NH part) in rotating_tank/code
1510    o simplify EXCH interface:
1511     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
1512     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
1513    o added the regrid package
1514    o shelfice:
1515     - add a simple boundary layer scheme to reduce noise
1516     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
1517    
1518    checkpoint58n_post
1519    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
1520       local variable (not in common block).
1521    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
1522      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
1523      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
1524        to work with SingleCpuIO.
1525    o add "_d 0" to real constant of pkg/cfc subroutines ;
1526       update exp. cfc_exemple & tutorial_cfc_offline output files.
1527    o multi-threading and IO:
1528      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
1529        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
1530      - barrier before and after reading.
1531      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
1532      - avoid using MDS_WRITELOCAL for LAND pkg output.
1533      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
1534        common-block variables ; Allows multi-threading with master-thread IO.
1535    o change default MAX_NO_THREADS from 32 to 4 ;
1536      and stop cleanly when MAX_NO_THREADS is too small.
1537    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
1538    
1539    checkpoint58m_post
1540    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1541       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1542    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1543       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1544       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1545    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1546        add MITgcm_tutorials (= code + all the tutorials)
1547    o ecco, option to compute cost for total ssh (mean+anom)
1548    o consistent with addition of ptracer and ssh in pkg/profiles
1549    o profiles: adding ptracer and ssh
1550    o testreport: change multi-test output-file name
1551      (from output.txt.{name} to output.{name}.txt)
1552    o profiles: now ok for mutli-tiles case
1553    o seaice: add 4 parameters for different advection schemes for area,
1554      (effective) seaice thickness, enthalphy, and snow height. Their default
1555      is the standard parameter SEAICEadvScheme
1556    o calc_gw:
1557     - add cosFacU in zonal viscous flux (harmonic.visc.).
1558     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1559       of tutorial_plume_on_slope.
1560    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1561    o calc_gw: true flux-form, account for horizontal grid spacing.
1562      update rotating_tank results, but not plume_on_slope (affected at
1563      truncation level, 11 digits).
1564    
1565    checkpoint58l_post
1566    o calc_gw:
1567     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1568     - remove side-drag for now (need to fix it); update plume_on_slope results.
1569     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1570    o commit code to make SST/SSS weights spatially variable
1571      (based on either variable in-situ or variable initial T/S weights)
1572    o pkg/ecco:
1573      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1574        now based on horizontally varying weights wthetaLev, wsaltLev
1575      * cost_averagesflags now returns year indices in addition to day, month
1576      * sflux balance is performed on annual basis
1577        (sflxumm, sfluxmm2, bal_sfluxmm)
1578      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1579        including separate counting and multipliers
1580    o pkg/rbcs
1581      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1582    
1583    checkpoint58k_post
1584    o testreport:
1585     - always build in dir. "build" (if not there, mkdir build instead of building
1586       & running in input)
1587     - run in dir run (if it exists), in build otherwise.
1588     - call prepare_run (if input/prepare_run exists)
1589     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1590    o pkg/exf modifications to interpolation and rotation routines for more
1591       reasonable treatment of North Pole singularity: for tracers North Pole
1592       value is set to northernmost zonal-mean value, for zonal velocity it is
1593       set to zero, and for meridional velocity it is set to northernmost value.
1594    o pkg/exf/exf_check_range.F
1595     - add tile index to diagnostics and move stop statement to the very
1596       end of the routine.
1597    o pkg/diagnostics: (diagnostics_main_init.F)
1598      define title of isomorphic variables according to the current config.
1599    o pkg/thsice with pkg/seaice dynamics:
1600    - fix domain of computation (interior only, required for exf) and do exchanges
1601    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1602    o towards a standard way of dealing with multi-threading in MONITOR
1603      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1604    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1605       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1606    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1607    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1608    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1609       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1610    o tracer advection:
1611     - clean-up and simplify calc_common_factors.F
1612     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1613       advection subroutine (but still not used within DST advection S/R)
1614    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1615    
1616    checkpoint58j_post
1617    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1618      from file (collects calls previously in FORWARD_STEP)
1619    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1620    o adjoint store dir. adjusted accordingly
1621    o genmake2
1622      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1623    
1624    checkpoint58i_post
1625    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1626      on wind stress (SEAICEstressFactor defaults to 1.)
1627    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1628      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1629    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1630      on CS-grid: no longer loosing mass.
1631    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1632    o pkg/ggl90: fix sloppy output and fix a bug
1633    o pkg/seaice: added SEAICEuseEVPpickup parameter
1634      - Set to false in order to start EVP solver with
1635        non-EVP pickup files when using SEAICEuseEVP
1636      - fix sign error in diffusion in seaice_calc_rhs
1637    
1638    checkpoint58h_post
1639    * Modifications for bottom topography control
1640      o replace hFacC by _hFacC at various places
1641      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1642      o add non-self-adjoint cg2d_nsa
1643      o update autodiff support routines
1644      o re-initialise hfac after ctrl_depth_ini
1645      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1646    * Adding verification for 5x5 box (4-layer) bottom topography control
1647    
1648    checkpoint58g_post
1649    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1650       used for mean seasonal cycle, mean diurnal cycle); add an example
1651       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1652    o pkg/ggl90:
1653      - add parameter (minimum surface kinetic energy)
1654      - fix bug (avoiding division by zero)
1655    o couple pkg/thsice to pkg/seaice:
1656      - modify advection in seaice to accomodate new scalar fields to be advected
1657      - only muliDimAdection scheme work with seaice/thsice
1658      - mapping of thsice-variables to seaice-variables, back and forth
1659      - does not break the verification experiments, but does not give the
1660        desired results either
1661    o pkg/seaice
1662      - make (default) second order advection a bit less confusing?
1663    
1664    checkpoint58f_post
1665    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1666      to pkg/seaice):
1667      - new routines thsice_map_exf and thsice_get_exf provide the interface
1668      - add an additional formal parameter to thsice_solve4temp
1669    o pkg/exf:
1670      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1671      - correct Stefan-Boltzmann constant
1672      - new parameter for longwave surface emittance
1673      - separate some stuff from exf_bulkformulae into new routines  
1674        exf_radiation, exf_wind
1675      - add new parameters and constants: longwave emissivity for ocean, ice
1676        and snow, evaporation parameters over ice
1677      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1678        either wind from stress or stress from wind
1679    o pkg/thSIce:
1680    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1681    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1682       and THSICE_CALC_THICKN
1683    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1684    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1685      to make debugging easier.
1686    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1687    o pkg/bulk_force:
1688      - clean-up comments and parameters ;
1689      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1690    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1691      generate new output for test-experiment: aim.5l_cs.thSI
1692    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1693      testreport accordingly
1694    
1695    checkpoint58e_post
1696    o SEAICE_CGRID adjoint done
1697    o R_STAR adjoint implemented.
1698      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1699      * need to sort out init. of h0facc, etc.
1700    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1701      to be able to use it in pure forward.
1702    
1703    checkpoint58d_post
1704    o upgrade simple test-experiment to tutorial example:
1705     step.1: duplicate the experiment and (step.2) will remove the old copy.
1706      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1707      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1708      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1709      tutorial_global_oce_biogeo    <- copy of dic_example
1710      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1711      tutorial_plume_on_slope       <- copy of plume_on_slope
1712      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1713      tutorial_global_oce_optim     <- empty for now (David ?)
1714      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1715     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1716    o correct a sign problem in cost_scat.F
1717    o obcs and ptracers: fix boundary conditions for advections schemes
1718      with larger stencil
1719    o thsice adjoint: start
1720    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1721      completeness
1722    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1723      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1724    o ptracers adjoint:
1725      * avoid extensive recomputatations
1726      * fix missing re-init. of gptr (missed by TAF)
1727    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1728      me to turn off the excessive output to STDOUT that this package produces
1729    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1730      and add those terms in Vector-Invariant formulation.
1731    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1732      if the control period (xx_hfluxperiod etc) is 0
1733    o in profiles pkg, clean routines and fix details
1734    o in ecco pkg, reading ssh data:
1735      fix problem in case the model does not start at iter0=0
1736    o fix mnc-pickup/restart for ptracers
1737    o new package prifiles:
1738      code to compute profile-based cost by Gael Forget
1739      (modifs in ecco, ctrl, autodiff)
1740    o Benign bug fix in initialization (spotted by M. Mazloff) of
1741      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1742    
1743    checkpoint58c_post
1744    o adjoint: finish NLFS adjoint and provide reference output in
1745      verification/global_ocean.90x40x15/results_ad_nlfs
1746    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1747      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1748      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1749      with SEAICE_CGRID defined.
1750    o move calendarDumps from "data" to "data.cal" and clean-up the code
1751      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1752    o add useEXF & useCAL flags (for now, set in hard-coded way)
1753    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1754      (were missing in NH mode, and wrong in quasihydrostatic mode).
1755      waiting for Chris updated version of calc_gw to add those CALLs.
1756    o fix bug in quasihydrostatic S/R ;
1757      add a test for this option: global_ocean.90x40x15.qshyd
1758    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1759      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1760    o add on/off flag useOffLine for package OFFLINE
1761    o seaice:
1762      - modify advection so that it works also on the C-grid
1763      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1764        problem in multi-tile runs with C-grid
1765      - add flags for clipping ice velocities and/or masking solver forcing
1766      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1767        C-grid solver
1768      - added a few comments to seaice_diffusion.F
1769      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1770        are now exclusive)
1771      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1772        required re-ordering the code a little:
1773       + make DAIRN global variable (defined in SEAICE)
1774       + move computation of the viscosities eta and zeta into a new separate
1775         routine (because I need to recompute them in seaice_ocean_stress.F)
1776    
1777    checkpoint58b_post
1778    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1779      update output.txt of exp. aim.5l_cs.thSI
1780    o various mnc cleanups and improvements:
1781      + shrink lookup tables by factor of ~4
1782      + better error reporting when running out of lookup space
1783      + able to handle longer path/file names (up to 500 chars)
1784    o adjoint:
1785      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1786      - TBD: "hidden" mom_vecinv recomp. in dynamics
1787    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1788     (allow to differentiate between forcing components using new integer flags:
1789      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1790     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1791    o ecco
1792      - enable trend removal from SSH anomaly obs.
1793    o adjoint
1794      - a fix for PmEpR when #undef EXACT_CONSERV
1795      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1796      - try to fix "hidden" recomp. in forward_step for NLFS
1797        (NLFS seems broken sometimes after I checked it in)
1798    o seaice:
1799     - add c-grid version of the dynamic solver:
1800       + three new routines that are the c-grid substitute lsr, dynsolver
1801         and ostres
1802       + put a few fields that were local to dynsolver into global common
1803         blocks, so that I can move the computation of stresses etc into
1804         seaice_lsr (saves coding but may break the adjoint).
1805     - replace more hardwired parameters by runtime parameters
1806     - add ice masks that mask the rhs of the implicit solvers where there
1807       is no ice (commented out in seaice_dynsolver, because i am not sure
1808       if this works properly), eventually this should replace the clipping
1809       of ice velocities in seaice_dynsolver to +/-40cm/s.
1810    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1811      include it only where its needed
1812    o move balancing of fluxes before the call of external_forcing_surf
1813    o seaice:
1814      - correct units of turning angles (now they are really in degrees)
1815      - move computation of GWATX/Y out of main routine into dynsolver
1816      - initialize GWATX/Y in seaice_init
1817    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1818      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1819    o seaice: add runtime flags for turning angles (default to zero)
1820    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1821      and trend from exf forcing and ctrl control adjustments
1822    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1823      (since checkpoint57x_post)
1824    o change the default rotation period to 86164.s = the Earth rotation
1825    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1826      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1827    o seaice advection: add code for choosing between the default (2nd order
1828      central differences) and multiDim advection schemes provided by
1829      pkg/generic_advdiff
1830    o seaice:
1831      - removed all references to SEAICE_GRID.h fields from
1832        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1833        (cubed-sphere configuration will change a little)
1834      - grid computations in seaice_init are obsolete now.
1835      - cleaned up code a little so that is easier to read (hopefully).
1836      - added new (better?) discretizations of default advection and diffusion
1837        (turn on with SEAICEuseFluxForm)
1838      - replace 1 in 3d global fields by kSurface in growth.F
1839      
1840    checkpoint58a_post
1841    o seaice:
1842      - bug fix in advect.F
1843    o shelfice:
1844      - separate shelfice load anomaly from pload (breaks with time
1845        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1846        Its default is 0., but it may be computed more cleverly from (unknown)
1847        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1848        done offline. A good approximation of the pressure load anomaly is
1849        necessary to avoid large initial adjustment processes underneath
1850        deep-reaching shelfice.
1851      - small fix in ISOMIP shelfice_thermodynamics
1852      - add more sophisticated thermodynamics of Hellmer (1989), this is
1853        now the default
1854      - give a few constants more intuitive names
1855    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1856      if bulk formulae are used in long integration (especially EmPmR). Turn
1857      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1858      if balancePrintMean, the imbalance that is substracted is printed to
1859      STDOUT.
1860    o fix bug (typo) in obcs_apply_eta.F
1861    o add a new package shelfice which enables us to model the circulation
1862      underneath shelf-ice with draughts of hundreds of meters.
1863     - works
1864     - to do: + include improved thermodynamics
1865              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1866                instead of new field kTopC
1867              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1868                instead of new field R_shelfIce and new code in ini_depth.F
1869                and ini_mask_etc.F?
1870              + adjust vertical mixing schemes?
1871    o seaice pkg:
1872     - add a cpp-flag to include a simple formula for a salinity dependent
1873       freezing point of sea water at the surface
1874     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1875       meridional stresses are now different (and hopefully correct)
1876    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1877       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1878       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1879    o pkg/diagnostics: add options and parameters for regional-statistics
1880       diagnostics ; define regions by reading a region-mask from a file
1881       (might add other options later)
1882    o pkg/bulk_force:
1883     - add option and parameters to use AIM surface-flux formulae.
1884     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1885       others forcing fields (defined in PARM05, parameter file "data") are loaded
1886       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1887     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1888     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1889     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1890       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1891     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1892    
1893    checkpoint58
1894    o add "--embed-source" option to genmake2 which, when the supporting
1895      tools can be compiled (as determined by genmake2) will turn on the
1896      embed_files package which then embeds the entire MITgcm source code
1897      (*.[fFhc] + Makefile) used for the build within the executable
1898      - requested by CNH but off by default
1899      - adds a paltry <9MB to the mitgcmuv executable in most cases
1900      - only writes the output when useEMBEDSRC in eedata is true
1901    o clean up 3-dim. relaxation codes:
1902      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1903      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1904      * Thanks to Tom Haine for testing!
1905    
1906    checkpoint57z_post
1907    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1908      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1909    o fix the pickup behavior for obcs in combination with ptracers
1910    o fix a bug in ptracers_external_fields_load
1911    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1912      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1913    o transfered surface NH pressure to eta field (if exactConserv).
1914    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1915         and update lab_sea output.txt file.
1916    o completing 3-dim. relaxation code: additional term
1917         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1918      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1919      * At compile time, in "EXF_OPTIONS.h" set
1920          #define  ALLOW_CLIMTEMP_RELAXATION
1921          #define  ALLOW_CLIMSALT_RELAXATION
1922      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1923          tauThetaClimRelax3Dim = 15552000.0,
1924          tauSaltClimRelax3Dim  = 15552000.0,
1925      * 3 cases:
1926          1) Use a constant-in-time 3-dim. field
1927          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1928          3) Real-time relax. to time-evolving prescribed field
1929    o Adding Laplacian-type smoothness constraint on
1930      initial and boundary (forcing) controls (ic, bc)
1931      * enable at compile-time via
1932        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1933      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1934      * Absolute scale somewhat unclear so far
1935      * no area weighting was included since no other cost term does so far
1936    
1937    checkpoint57y_post
1938    First step for a NLFS adjoint
1939    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1940    o new init. routines for calc_r_star, calc_surf_dr
1941    o still need to deal with ini_masks_etc
1942    o testreport seemed happy
1943    checkpoint57y_pre
1944    
1945    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1946    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1947    o add new offset feature to offline pkg (plus minor cleanup)
1948    o cfc fixes for final year of integration
1949    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1950      be in GCHEM_OPTIONS).
1951    
1952    checkpoint57x_post
1953    o fix testreport Pb in multiple test experiment.
1954    o cleanup our namelist syntax in verification:
1955      - make it more F95 standards compliant (some work still needed)
1956      - allows the vast majority of our tests to work with gfortran
1957    o Non-Hydrostatic:
1958     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1959     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1960    o Allow to apply AB on T,S rather than on AB(gT,gS):
1961     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1962     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1963       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1964     - need a "clever" read_pickup to restart from the other AB formulation
1965    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1966    o remove some unused variables (reduces number of compiler warnings)
1967    o adjoint
1968      * Disable useVariableViscosity for adjoint for time being
1969        (there are a number of extensive recomputations)
1970      * Initialize certain variables needed for adjoint
1971    
1972    checkpoint57w_post
1973    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1974                 fix the singleCpuIO RS version of MDSWRITEFIELD
1975       and add a WARNING if using globalFiles=T with multi-processors.
1976    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1977      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1978    o tracer advection scheme:
1979      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1980       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1981       was not very convenient).
1982      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1983       (further tests needed for the implicit DST & Flux-Limiter schemes).
1984    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1985      and sRef for convenience, handy, when you want to initialize
1986      ptracers in a large domain with a constant non-zero value. Also,
1987      untangle ptracers_init.F a little.
1988    
1989    checkpoint57v_post
1990    o change dome exp. to use variable viscosity in side-drag terms.
1991    o remove all the files from the cfc_offline test since they are now
1992      incorporated into tutorial_cfc_offline which has been producing
1993      identical results for a few days of testing
1994    o add new parameter: sideDragFactor to enable half-slip-side BC
1995      and change side-drag S/R to use viscosity from mom_calc_visc
1996      (can switch back by setting sideDragFactor=0.); affects results at
1997      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1998       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1999    o vorticity & strain are now computed without masking, to account for
2000      no-slip-side BC in variable viscosity calculation ; mask is applied
2001      anyway later on, before computing advection/coriolis terms.
2002    o modify exp4 to test new obcs support for reading from external files
2003      and for passive tracers
2004    o fix behavior of ptracers_monitor when monitor output is written to a
2005      netcdf-file; still not independent of monitor.F (writes in the same
2006      file).
2007    o change default value of tRef (put a uniform, meaningful value for ocean
2008      & atmos) and initialize sRef (was missing, as Martin mentioned).
2009    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
2010      to be proportional to enstrophy dissipation length.  Thus,
2011       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
2012      This is now consistent with Smagorinsky and with the manual.
2013    
2014    checkpoint57u_post
2015    o OBCS and PTRACERS: add open boundary support for passive tracers
2016      - either use homogenous (pseudo) v.Neumann conditions or prescribe
2017        OB-values from file; this is not different from the way theta and salinity
2018        are treated
2019      - however, Orlanski-radiation conditions are not supported, and the model
2020        will stop if you use pTracers and Orlanski at the same time.
2021      - beefed up the rountine obcs_external_fields_load: now only those open
2022        boundary values are overwritten with values from files for which there
2023        are really files, otherwise the OB-fields remain untouched. This makes
2024        it possible to use different OBs at different ends of the domain (as
2025        with EXF)
2026    o reduce number of exch calls in shap_filt (s2).
2027    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
2028      truncation level) 4/5 MLAdjust test results (11&12 digits match).
2029    
2030    checkpoint57t_post
2031    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
2032    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
2033      same truncation, independent of the face number: affects affects several
2034      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
2035    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
2036      note that biharmonic viscosity + no-slip was not tested in any experiment.
2037    o fix bug in non-linear free-surf side-drag ; generate new output for
2038      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
2039    o make mnc honor the writeBinaryPrec flag for most kinds of output
2040    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
2041    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
2042      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
2043    o add brackets in multi-terms sum to get same truncation, independent of
2044      the face number (manage to get exactly same value of gU,gV at the cs-edge)
2045      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
2046    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
2047      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
2048      a maximum grid-scale Reynolds number.  Also, changes all length calculations
2049      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
2050      Suggested values of viscosity parameters found in mom_calc_visc.
2051      Many new viscosity diagnostics available.
2052    
2053    checkpoint57s_post
2054    o Add clearing-house for viscosity calculations, mom_calc_visc and
2055      correct numerous bugs in LeithD and Smagorinsky discretizations.  
2056      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
2057      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
2058      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
2059      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
2060      The Strain-Tension form is now called with useStrainTensonVisc=.true.
2061      ViscAhStrain and viscAhTension are now retired.
2062    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
2063    o In response to JMC's bug report, genmake2 now ignores any soft-links
2064      that it finds in the *current* directory when searching for files.
2065      Soft-links found in any other source directories will still work as
2066      they did before.
2067    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
2068      a C routine to unlimit the stack size
2069    o mnc-ify pkg/aim snapshot vars
2070    o mnc-ify pkg/land as requested by Daniel
2071    o various changes to mnc including:
2072      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
2073      - output can now be grouped so that all files within a group
2074          change the ITER portion of their names in lock-step together
2075      - can now read ("global") PER-FACE (in addition to PER-TILE) files
2076          and works with both EXCH1 and EXCH2 (but needs more testing)
2077      - writing works for all verification test cases w/ g77 on Linux
2078    
2079    checkpoint57r_post
2080    o make MNC variable initialization happen earlier
2081    o add diagnostics for (almost) each term of the momentum Eq.
2082    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
2083    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
2084    o remove MINIMAL_TAVE_OUTPUT option ;
2085      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
2086    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
2087      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
2088    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
2089    o add time-dependent SST, SSS control
2090    o cost terms in ecco/ modularized (new cost_generic.F)
2091    o cost_averages routines are modularized (new cost_averagesgeneric.F)
2092    o new infrastructure for seaice model vs. obs misfits in seaice/
2093      * driver from the_main_loop.F is seaice_cost_driver.F
2094      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
2095      * gradient check in Exp. 6a of natl_box_adjoint/
2096    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
2097      (see README file)
2098    
2099    checkpoint57q_post
2100    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
2101    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
2102      - bug was reported by Jean-Michel and Ian Fenty
2103    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
2104      update exp. cpl_aim+ocn output.
2105    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
2106      Needed for high-res. runs with large global files
2107      to be able to limit tapelev size
2108    o Changed some tests for adjoint:
2109      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
2110      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
2111      * global_ocean.90x40x15/ back to default 3-level checkpointing
2112    o Modifications to enable scripted COMMON to MODULE conversion
2113      * verification/OpenAD/code/ has necessary scripts and description;
2114      * converts, compiles and runs successfully;
2115    
2116    checkpoint57p_post
2117    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
2118    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
2119      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
2120    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
2121    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
2122      (was already the case for dissipation with mom_vecinv,
2123       and also the case for grad.PhiHyd when staggered-timeStep)
2124      This will allow to put dissipation out-off the AB time-stepping.
2125     Unfortunately, affects truncation error. Update output of exp. that "fails"
2126      (cg2d matching number) and leave the others for later: front_relax(10),
2127      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
2128      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
2129    
2130    checkpoint57o_post
2131    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
2132      (2) its ready to be documented during the 20050801 DocFest
2133    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
2134      for ideal_2D_oce and lab_sea on linux_ia32_g77
2135    o set to #undef CTRL_SET_OLD_MAXCVARS_30
2136      in global1x1_tot/code_seaice_adj to access indices 32, 33
2137      (worth another tag)
2138    
2139    checkpoint57n_post
2140    o adding precip control xx_precip 32
2141    o adding swflux control xx_swflux 33
2142    o Replacing 10 forcing penalty cost routines by 1 generic.
2143    o Implementing partitioning in time-mean and variable adjustment
2144      for atmos. state.
2145    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
2146    o in natl_box_adjoint:
2147      * updated exp 1 to 10
2148        (but does not have time-mean vs. variable split results yet)
2149    o updated global1x1/*_seaice_adj/
2150      to incorporate latest changes
2151    o enable useSingleCpuIO for mdsio vector routines
2152      (applies in particular to tapelev I/O)
2153    o removed inefficient K-loop in all active_file*control*.F
2154    
2155    checkpoint57m_post
2156    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
2157      and advect_cs (use EXCH-2 and standard cs-32 grid files).
2158    o pkg/exch2: filling of face-corner halo regions is optional
2159      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
2160    
2161    checkpoint57l_post
2162     tag before updating tutorials (pre-release-2)
2163    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
2164       for output and interpolation of input fields onto model grid)
2165    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
2166       Affects results of exp. rotating_tank ; update output.txt.
2167    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
2168          and taking the square quantity and/or using a fraction-weight field.
2169    o fix aim_diagnostics_init.F mate numbers.
2170    o add mnc output capability to diagnostics/diagstat and update
2171      our cvsignore files for the ACSII output generated
2172    
2173    checkpoint57k_post
2174    o lab_sea now uses diagnostics package and provides a suite of
2175      new EXF diagnostics output.
2176    
2177    checkpoint57j_post
2178    o exf
2179      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
2180        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
2181        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
2182      * extended diagnostics output
2183        - now includes all EXF variables
2184        - hs, hl moved to common block
2185        - separate S/R for diagnostics, called after ctrl vector is added
2186        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
2187        - EXFqnet contains true Qnet (i.e. includes qsw)
2188      * updated verif. lab_sea, global_with_exf
2189      * Rearranging hflux (exf_mapfields -> exf_getforcing)
2190        to ensure that diagnostics sees a true EXFqnet
2191    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
2192    o diagnostics pkg: change pointers so that 1 diagnostic can be used
2193      several times with different frequencies.
2194    o mnc-ify the thsice package as requested by Daniel Enderton
2195      - the monitor--MNC output needs work
2196      - many attributes need to be added (most are currently blank)
2197    o mnc-ify theaim_v23 package as requested by Daniel Enderton
2198      - many attributes need to be added (most are currently blank)
2199    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
2200    o add Sadourny like discretization to the 4th.O vorticity advection scheme
2201    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
2202      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
2203         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
2204    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
2205     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
2206    
2207    checkpoint57i_post
2208    o Diagnostics package was changed: diagnostic allocation is now deactivated
2209      by setting an empty file name in the namelist (used to be by setting 0 frequency)
2210    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
2211      add 1rst Order upwind vertical Shear.
2212    o add a quick fix for A/B checkpointing in OFFLINE mode
2213    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
2214      end-run around the C/Fortran linking horror in eesup/src/timers.F
2215    o added pkg/runclock: allows user to terminate run based on wall clock
2216    o added non-hydrostatic scaling parameter: nh_am2
2217    o pkg/my82: futile attempt to make results compiler-independent by adding
2218      some "_d 0", etc. no effect.
2219    o for mnc output, fill the 'T' coordinate var with myTime and create a
2220      separate 'iter' variable for iteration count
2221    o pkg/diagnostics:
2222      add new capability: output of Global/Regional & per-level statistics ;
2223      tested against monitor output (including land & thSIce) on various exp.
2224    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
2225    
2226    checkpoint57h_done
2227      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
2228      data.diagnostics, data.gchem, data.ptracers) is done.
2229    
2230    o pkg/diagnostics: prepare for Global/Regional statistics.
2231      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
2232    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
2233      and rename it: DIFFERENT_MULTIPLE
2234    
2235    checkpoint57h_post
2236    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
2237    o pkg/diagnostics: change output frequency, now in seconds (instead
2238      of Nb of iterations). This requires to change data.diagnostics.
2239    checkpoint57h_pre
2240    
2241    o in mnc, let the user create the output dir if both mnc_outdir_date
2242      and mnc_outdir_num are false
2243    o add fflags() to pkg/diagnostics which allows one to specify, on a
2244      per-file basis, the file precision [default behavior is unchanged]
2245    o added diagnostics to pkg/kpp, including computation of mixed layer
2246      depth based on a temperature/density criterion
2247    o updated verification/natl_box to test the new pkg/kpp diagnostics
2248    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
2249    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
2250    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
2251      not mnc -- this mistake was found by JMC and is now corrected
2252    
2253    checkpoint57g_post
2254    o add Adams-Bashforth 3rd Order time stepping:
2255      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
2256      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
2257    checkpoint57g_pre
2258    
2259    o make lambda[Theta,Salt]ClimRelax spatially varying
2260      (default remains spatially uniform constant based on tau)
2261    o added new control variables
2262      * init. uVel, vVel, etanN
2263      * lambda[Theta,Salt]ClimRelax
2264    o separate masks used for ctrl_pack/unpack 'from write_grid' output
2265      (suggested by G. Forget)
2266    
2267    checkpoint57f_post
2268    o add parameter "baseTime" = model base time = time at iteration zero
2269      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
2270      account for baseTime shift
2271    o move Coriolis arrays from PARAMS.h to GRID.h
2272    checkpoint57f_pre
2273    
2274    o mnc-ifying the seaice package
2275    o introduced an alternative length scale calculation for use in the limiting
2276      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
2277    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
2278    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
2279      as well as grad(vort3).  Made it compatible with both approximate form
2280      for the cubed sphere and full form of these gradients.  Added flag
2281      useFullLeith to select between approximate and full form.  
2282    o add "d0" in getcon.F to reduce differences between compilers/platforms
2283      update output.txt of exp. fizhi-gridalt-hs
2284    o change port_rand funtion to allow to set the seed.
2285    o fix obscure MNC bug involving conversion between reals and integers
2286      - it caused no problems with certain (eg. gcc, ifc) compilers but the
2287        new version is now more standards-compliant
2288    o adjoint-related modifications
2289      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
2290      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
2291      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
2292    
2293    checkpoint57e_post
2294    o Adding eddy stress controls a la Ferreira et al.
2295    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
2296    
2297    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
2298      update output.txt of exp. fizhi-gridalt-hs
2299    o add more "Z" dimensions and associated coordinate vars to MNC
2300    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
2301    o parameter calendarDumps: when set, approximate months (30-31 days) and years
2302      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
2303      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
2304      months and years.  Requires pkg/cal.
2305    o diagnostics: add pickup functionality
2306      - off by default for backwards compatibility
2307      - current version only uses MDSIO -- MNC will be added
2308    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
2309    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
2310    
2311    checkpoint57d_post
2312    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
2313    o modify verification/ideal_2D_oce so that it tests the creation of mnc
2314      output from the diagnostics package
2315    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
2316    o make genmake2 more portable by using ".$FS" instead of ".f" for more
2317      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
2318    o add coordinate variables to the MNC output from the diagnostics package
2319    o change MNC-flags default value: true when useMNC=TRUE
2320    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
2321      the ability (off by default) to read the grid information using MNC
2322    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
2323    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
2324    o do snap-shot diagnostics at the middle of the time-interval (instead of
2325      at the end).
2326    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
2327      new test for AIM with thSIce + slab-ocean
2328    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
2329    o move state variable diagnostics to the beginning of the time step ;
2330      (note: still needs some work specially for snap-shot diagnostics)
2331      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
2332    
2333    checkpoint57c_post
2334    o Change testing option (-ieee) to get closer agreement between g77 & ifort
2335    o generate new output.txt files on faulks with g77 & the new -ieee option
2336    checkpoint57c_pre
2337    
2338    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
2339      update output.txt of exp. global_ocean.90x40x15
2340    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
2341      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
2342    o add saltFlux(+File) forcing capability with periodicExternalForcing
2343    o allow to use pkg diagnostics for GM-Redi & ThSIce output
2344    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
2345    o improvements for the MNC output from DIAGNOSTICS:
2346      - correct handling of the unlimitied dimension
2347      - all dims now have associated coordinate variables
2348      - variables located at U, V, and Corner ("Z") points are now written
2349        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
2350        *all* data points are output
2351    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
2352    o added pkg/seaice/seaice_monitor.F
2353    o mdsio_readfield.F can now read files visible only to master MPI process.
2354    o pkg/seaice: some test code for ice-modified ocean stress
2355    o exf_getffields interpolation defaults to bilinear for all scalar forcing
2356      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
2357      spurious negative numbers for precipitation and humidity.  Will cause
2358      some small numerical differences for integrations using pkg/exf/exf_interp.F.
2359    o pkg/ctrl/
2360      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
2361        May be enabled via doPackDiag
2362      *  introduce z-scaling of
2363         + gradient (doZscalePack) and
2364         + control (doZscaleUnpack)
2365    o pkg/mdsio/
2366      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
2367      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
2368    
2369    checkpoint57b_post
2370    o simplify options in diagnostics_fill arguments (remove weird combinations)
2371    o fix MNC coordinate variables so that they now contain per-face index
2372      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
2373      general, EXCH2 grids are only aligned to a "local" coordinate system
2374    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
2375    o Implement instantaneous output within pkg diagnostics:
2376      setting a negative frequency in data.diagnostics produces
2377     "snap-shot" output (as opposed to time-average if freq > 0)
2378    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
2379      NOTE: change ptracer diagnostics name: use 2 characters to work with
2380            more than 9 tracers. Add also diagnostics of advect & diffus flux.
2381    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
2382      becomes the coordinate variable for the 'T' dimension
2383    o add CF-style coordinate variables to MNC
2384      - just a first cut:  numbers are meaningless on the cubesphere and
2385        missing along the T axis but otherwise it works!
2386    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
2387    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
2388    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
2389      this is based directly on what the model compute, so that the content of
2390      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
2391    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
2392    o clean up build options files for SunOS, in particular
2393      - remove -traditional from xmakedepend
2394      - change -xarch=v9 to -xarch=native for f77
2395      - restore use of make (not gmake)
2396      - add CC=gcc if using g77
2397    o changes per discussion of AM, JMC, & EH3 today:
2398      - move redundant "grid" variables out of "state" -- in preparation of
2399        creating proper CF-style coordinate variables and in recognition
2400        that any/all grid variables can be easily copied (eg. w/NCO) from
2401        the grid files into any of the other NetCDF files
2402      - *always* output grid variables with MDSIO (this will eventually be
2403        changed)
2404      - output MNC grid file if useMNC is true
2405    o every instance of _END_MASTER() has been found and replaced with
2406      _END_MASTER( myThid ) in order to satisfy certain picky Sun
2407      preprocessors
2408    o re-arrange diagnostics pkg initialisation:
2409     - allow each package to extend the available diagnostics list
2410     - add some checking and fix small problems (multi-threaded, ...)
2411     - new S/R diagnostics_fill (replace fill_diagnostics):
2412       look through the short list of active diag. (instead of the long list)
2413       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
2414    
2415    checkpoint57a_post
2416    o this set of changes restores TAMC compatibility
2417      tested for global_ocean.90x40x15 adjoint on trough
2418      (what a pain)
2419    
2420    checkpoint57a_pre
2421    o some modifs in tools/build_options for sunos
2422    o call ctrl_pack for ctrl at end for optimcycle=0
2423    
2424    checkpoint57
2425    o add horizontal bi-harmonic viscosity for vertical velocity
2426      - new parameter viscA4W (defaults to viscA4)
2427      - affects only non-hydrostatic code
2428      - to be done: no-slip lateral boundary conditions
2429    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
2430    o implement Implicit Vertical advection for pTracers
2431    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
2432      (implemented also for implicit vertical diffusion & advection)
2433    o OBCS: extend application of tracer open boundary conditions
2434      to a strip beyond the boundary of width Olx/Oly
2435    o add call monitor to TAF set of required calls (flow directives)
2436      and include in natl_box_adjoint
2437    o untangle a few ifdefs related to cost, ctrl, autodiff
2438      untangel a few ALLOW_ECCO_OPTIMIZATION
2439    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
2440      (theta2, salt2 in ecco_cost_weights)
2441    
2442    checkpoint56c_post
2443    o OBCS as control variables
2444      - update ctrl_ad_diff.list, obcs_ad_diff.list
2445      - remove balance of obcs controls from default
2446      - fix index bug nobcs in ctrl_init
2447      - fix dummy fields filen in ctrl_pack
2448      - add dummy weights for obcs
2449    o lsopt: comment out fort.94 output
2450    o optim:
2451      - remove unnecessary header files
2452      - adjusted namelists
2453      - add xerbla.F to Makefile
2454    o exf:
2455      - multiple modifications of exf_check_range
2456      - unit change in exf_init_runoff from [m/year] to [m/s]
2457    o mdsio:
2458      - i/o-vector change debugLevel from debLevA to debLevB
2459    
2460    checkpoint56b_post
2461    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
2462      is called from DO_THE_MODEL_IO
2463      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
2464      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
2465      - clean up PTRACERS_WRITE_TIMEAVE a little
2466    o add another verification experiment that tests both the cfc-pkg and
2467      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
2468      reactive tendencies treated inline with regular timestepping
2469    o testreport previously did a lousy job of comparing small numbers, so
2470      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
2471      implemented in the little c-progam tmp_cmpnum.c which is embedded in
2472      testreport.
2473    o ptracers_monitor: bug fix for MPI
2474    
2475    checkpoint56a_post
2476    o GCHEM: finish reorganizating the package
2477      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
2478        (introduces another 3D-array for each passive tracer, but only if
2479        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
2480        gchemTendency is not needed because the timestep is done separately)
2481      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
2482      - GCHEM is now---more or less cleanly---separate from PTRACERS
2483      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
2484        so clear to me how that should be done in a general way.
2485    o CFC: improve formatting of output in CFC_ATMOS
2486    o PTRACERS:
2487      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
2488        that ALL experiments with ptracers enable can be checked. This makes
2489        GCHEM_MONITOR obsolete.
2490      - include a runtime parameter PTRACERS_monitorFreq that defaults to
2491        monitorFreq
2492      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
2493    o add PTRACERS (PTR0[1-5]) to testreport output
2494    o exf_check_range:
2495      * default changed to .TRUE.
2496      * will check values for niter0 if debLevA, every timestep if debLevB
2497      * STOP in exf_check_range if 'out of range'
2498      * range chosen generous to allow for potential extema
2499      TBD: a version with stricter range
2500           permitted range would be runtime parameters
2501    o GMredi:
2502      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
2503      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
2504      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
2505    o GCHEM:
2506      - move call to GCHEM_FORCING_SEP, so that it is now called before
2507        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
2508      - introduced a useGCHEM runtime flag and applied it everywhere.
2509      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
2510        this flag is now only visible within GCHEM-pkg routines.
2511      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
2512        be replaced by a 3D array that is computed before thermodynamics; for
2513        this, the tracer ID iTracer had to be included into the parameter list
2514        of ptracers_forcing
2515      - set up forward_step to call gchem_forcing, that will replace
2516        gchem_forcing_int in ptracers_forcing
2517      - cleaning up
2518    o small cleaning of exch2: remove files that are also in eesupp/src
2519    
2520    checkpoint56
2521    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
2522    o mnc: cleanup "full" files--fixes out-of-memory problem
2523    o ECCO-GODAE
2524      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
2525      * fully merged and updated from SIO code
2526        windstress sign change affects
2527        - exf_inscal_[u/v]stress
2528        - sign of xx_tau[u/v] adjustments
2529        - signs in cost_scat
2530      * ctrl_get_gen: avoid update of tau[u/v] for first few days
2531      * natl_box_adjoint updated and compressed
2532      * 2-level checkpoint switch added
2533        (tested in EXP. 1 of natl_box_adjoint)
2534      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
2535    o SVD
2536      * first complete, non-hacked version for SVD calculations
2537      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
2538        performed via direct access files admtlm_vector.it????
2539        (via ctrl_[un]pack)
2540      * optimcycle is used for ARPACK iteration counter
2541        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
2542      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
2543        and add linear transforms where necessary
2544      * controls are initial/final SST, SSS (can be extended; need to check
2545        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
2546    o mdsio: filename info to both stderr, stdout
2547    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
2548      from sign change
2549    
2550    checkpoint55j_post
2551    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
2552      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2553    o add consistent build directories and .cvsignore files to verification
2554    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
2555    o make all subroutines 30 or less characters in length for certain older
2556      compilers to work (a thorough search only turns up two routines in
2557      pkg/ptracers)
2558    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
2559      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2560    
2561    checkpoint55i_post
2562    o change arrays for total vertical diffusivity (2.D if explicit,
2563      3.D if implicit) ; each ptracer uses its own background value.
2564    o added mnc/NetCDF output capability to ocn_compon_interf
2565      - added bits to verification/cpl_aim+ocn so that it can run on
2566        ITRDA and other clusters without the mpirun "-wd" option
2567    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
2568      configuration
2569    o give MNC the ability to create additional files rather than
2570      exceeding a specified file size limit "MNC_MAX_FILESIZE"
2571      - the default is just less than 2GB which is a practical limit
2572        on many systems
2573    o Compute the non-local term using either KPP vertical diffusivity (=default)
2574       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
2575    
2576    checkpoint55h_post
2577    o add verification test "vermix"
2578    o remove all the *_ioinc flags and replace with the single global
2579      outputTypesInclusive flag
2580    o allow to set a vertical profile of vertical diffusivity for T & S
2581    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
2582    o useMNC moved from data.mnc to data.pkg
2583    
2584    checkpoint55g_post
2585    o Renaming carbon AD experiments to comply with testreport conventions
2586    o Updating adjoint of Held-Suarez hs94.1x64x5
2587    o Fixing directives for non-ECCO forward_step, after ECCO directives
2588      have been fixed to avoid recomp. of do_oceanic_phys
2589      Works well for global_ocean.90x40x15,
2590      but recomp. issue remains for carbon
2591    o Updating adjoint output for natl_box_adjoint after
2592      pkg/ecco has been modified (see taga c55d_post)
2593    
2594    checkpoint55f_post
2595    o rename to timeave_init_fixed
2596    
2597    checkpoint55e_post
2598    o some delicate re-shuffle of store directives to avoid one
2599      extra call of do_oceanic_physics
2600      affects ecco_the_main_loop.F, do_oceanic_physics.F
2601      checkpoint_lev1_directives.h
2602    o NB: this may break global_ocean adjoint temporarily,
2603      but it is clear how to fix it. Will do later, need this now.
2604    
2605    checkpoint55d_post
2606    o ECCO specific cost function terms (up-to-date with 1x1 runs)
2607    o ecco_cost_weights is modified to 1x1 runs
2608    o modifs to allow observations to be read in as
2609      single file or yearly files
2610    o enable to read exf forcing fields as either
2611      single file or yearly files (flag useExfYearlyFields)
2612    checkpoint55d_pre
2613    
2614    o switch between 2-level and 3-level checkpointing
2615    o add ability of MNC to write local and "partial" (eg. 2D slices where
2616      the full 3D field is never actually stored) arrays to NetCDF files
2617      with the correct (that is, the complete multi-dimensional) set of
2618      array indicies
2619      - used in mom_vecinv() to write the diagFreq output
2620      - tested (demonstrated) in verification/aim.5l_cs
2621    o further mnc-ification
2622      - add verification/lab_sea to the list with mnc setups
2623      - fix undefined mnc v-names in cd_code
2624      - add kpp to mnc output (both snapshot and timeave)
2625    o non-hydrostatic code
2626      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
2627        in calc_gw.F
2628      - defaults to viscAh
2629      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
2630        friction or Leith) in non-hydrostatic mode, as long as there is
2631        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
2632    o pkg/cost
2633      extend simple cost functions to treat time mean quantities
2634      (T,U,V) via cost_accumulate_state from cost_tile
2635    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
2636        be 2 times larger than the minimum size the advection scheme requires.
2637        now get a perfect conservation of salt in advect_cs test-exp (updated)
2638    o GGL90 (Gaspar's TKE mixed layer)
2639      - add horizontal diffusion of TKE, requires exchanges in
2640        do_fields_blocking_exchanges, horizontal diffusivity is zero by
2641        default. In OPA there is no horizontal diffusion of TKE but the
2642        mixing coefficients are computed from a horizontal average of TKE of
2643        6 points or so. I think that diffusion has a little more physical
2644        justification.
2645      - clean up ggl90_calc in the hope of reducing memory usage (this hope
2646        was in vain)
2647      - mask tke-variable in ggl90_init
2648    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
2649    o fix biharmonic diffusion on CS-grid.
2650    o more obcs stuff
2651      - added obcs_external_fields_load as an alternative to the EXF-pkg option
2652        for reading boundary values. This routine is called from
2653        obcs_prescribe_read
2654      - updated obcs_check
2655      - changed sponge layer relaxation parameter units for days to seconds
2656      - turned off sponge layer by default
2657      - changed argument list of OBCS_CALC to myTime+deltaTclock
2658      - fixed about 35 bugs in obcs_external_fields_load
2659    
2660    checkpoint55c_post
2661    o obcs stuff
2662      - new runtime flags useOBCSprescribe, useOBCSbalance
2663      - re-arranged obcs_calc
2664      - moved exf_getobcs to obcs_prescibe_read
2665        obcs_prescibe_read is called after ORLANSKI stuff
2666        and independent of it (executable can contain all).
2667      - updated obcs_check
2668      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
2669        These may be necessary only if tangential velocities are
2670        prescribed at OB, not sure, needs testing.
2671    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
2672      which simplifies the calls and passes the ifc check-bounds test
2673    
2674    checkpoint55b_post
2675    o add a 2D scalar, Z location, exchange_2 routine.
2676    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
2677      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
2678      affects advect_cs results (for the wrong reason): update output.txt
2679    o use a more standard discretization for biharmonic viscosity ;
2680     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
2681      affects results of dome set-up: update output.txt
2682    o fix gad_advection.F (CubedSphere part), back to version 1.23
2683    o fix bug in mom_vi_del2uv.F (CubedSphere part).
2684    
2685    checkpoint55a_post
2686    o merged code to
2687      * prescribe/read time-dependent open boundaries
2688        (works in conjunction with exf, cal)
2689      * sponge layer code for open boundaries
2690      * each boundary N/S/E/W now has its own CPP option
2691        (healthy for the adjoint)
2692    
2693    checkpoint55
2694    o up-to-date adjoint of previous breaks
2695      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
2696      - global_ocean_ebm: adjoint still needs fix (TLM ok)
2697      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
2698      - carbon: * remove tr1-related adjoint verification
2699                * add ptracer as control variable
2700    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
2701      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
2702    
2703    checkpoint54f_post
2704    o in verification/carbin/ remove experiment related to
2705      ALLOW_PASSIVE_TRACER (array tr1 etc)
2706      code_ad/ input_ad/ results_ad
2707    
2708    o add two new packages
2709      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
2710        + subject to optimization (memory)
2711      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
2712        + subject to reordering (many GOTOs in the original code)
2713        + so far opps is called for every (i,j) point, and then operates in
2714          the vertical; one may want to reorder the scheme in order operate in
2715          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
2716          fields)
2717    o overhaul of IO so that we now have flags for MDSIO and/or MNC
2718      - all verification tests compile and run with linux_ia32_g77
2719      - defaults are compatible with current input files--nothing
2720        should change if you were not previously using MNC
2721      - MNC output has been added in numerous places (eg. timeave)
2722        but there are still a few writes not yet do-able with MNC
2723        (this is in progress)
2724      - flags now allow for either/or/both use of MDSIO and MNC and
2725        documentation will soon follow
2726      - numerous small formatting cleanups for ProTeX
2727    o add version info (via BUILD_INFO.h) to MNC and stdout
2728    
2729    checkpoint54e_post
2730    o add two new packages
2731      - pp81 (Packanowski and Philander, 1981), Richardson number and
2732        stratification dependent mixing
2733      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2734      - these scheme operate in a similar manner as KPP (without ghat, of
2735        course), however there is only one diffusivity that is used for both
2736        temperature and salinity (and passive tracers)
2737    o add offline package
2738    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2739      provided by Stephanie Dutkiewicz
2740    o genmake2: add ability to search for C compilers and cleanup test output
2741      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
2742    
2743    checkpoint54d_post
2744    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
2745    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
2746      leading to additional shift by 5 days each year of integration
2747       (i.e. leading to considerable offset over the years)
2748    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
2749    o start with no AB and no initial filtering (staggerTimeStep):
2750      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
2751    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
2752      (external loading & cpl import/export stay in forward_step.F)
2753    o update coupling interface to work with new staggerTimeStep
2754    o change MDSIO ptracers_pickup.
2755    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2756    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2757    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2758    
2759    checkpoint54c_post
2760    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2761      this affects (truncation error) output.txt of test-exp:
2762       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2763    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2764    o change Qnet to always be the net heat flux, (+upward).
2765      affects (truncation error) output of natl_box exp.: updated
2766    o define the max number of passive tracers in PTRACERS_SIZE.h
2767    o start to test mnc routinely in exp0
2768    o add sea-ice loading (sIceLoad) as a new forcing field.
2769    
2770    checkpoint54b_post
2771    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2772       impressive on Altix and Opteron systems)
2773    o diagnostics can now write NetCDF files through the mnc package
2774    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2775    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2776    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2777      affects (truncation error) output of lab_sea & natl_box exp.: updated
2778    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2779    
2780    checkpoint54a_post
2781    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2782    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2783    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2784    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2785      + internal_wave (shift in writing cg2d_ini_res)
2786  checkpoint54a_pre  checkpoint54a_pre
2787    
2788  o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice  o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice

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