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revision 1.240 by edhill, Wed Jan 14 03:49:57 2004 UTC revision 1.1175 by heimbach, Mon Oct 12 16:41:09 2009 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o adjoint:
8      * update and finish work on adjoint of dic package (G. Forget)
9      * start adjoint of offline package
10      * bug fix for cube-sphere TLM code (active_file_g.F)
11    o tutorial_global_oce_optim:
12      now tested with 4 tiles (change data.grdchk and update output_adm.txt)
13      and add SIZE.h_mpi for MPI testing
14    o pkg autodiff
15     - fix bug in autodiff_restore
16     - make genmake2 remove comments and empty lines from ad_input_code.f in
17       order to reduce file size (new script file remove_comments_sed)
18    o allows to specify vertical profile of vertical viscosity (viscArNr)
19    o pkg autodiff
20      autodiff_ini_model_io: comment out writing of grid information to netcdf
21      files, because at this time the grid fields are a bunch of zeros
22      (this is analogous to ini_mnc_vars.F)
23    o pkg seaice/autodiff:
24     left-over from removing the 3-time-level fields:
25     - small rearrangement of common blocks (SEAICE.h)
26     - fix field declaration in order to get meaningful output in
27       adseaice.*.nc (adcommon.h)
28    o pkg obcs:
29     - go through NH code only if nonHydrostatic=T
30     - fix restart for Orlanski (Hydrostatic; still to fix NH+Orlanski restart)
31     - move call to OBCS_CALC before SEAICE_MODEL which needs seaice-obc fields
32       => Update output of experiment seaice_obcs
33     - useOBCSbalance: code is wrong with multi-tile / proc: add a stop.
34     - fix NH+Orlanski restart (add wvel OBC value in pickup file)
35     - fix restart for useOBCSprescribe + useEXF
36    o pkg ctrl
37     - make obcs as control parameter work also with useSingleCPUio
38     - replace a few sny and snx by Ny and Nx to be consistent with
39       ctrl_set_globfld_x/yz.F
40    o pkg seaice
41     - re-introduce global field frWtrAtm for the case of
42       ALLOW_MEAN_SFLUX_COST_CONTRIBUTION defined (SEAICE.h, seaice_growth.F)
43     - catch the case of an empty filename in seaice_cost_init_fixed.F
44    o pkg ecco:
45     - small bug fixes in the_main_loop
46      . fix order of monitor arguments
47      . change SEAICE_MULTILEVEL to SEAICE_MULTICATEGORY
48      . move include DYNVARS.h up outside the ALLOW_AUTODIFF_TAMC block so
49        that ALLOW_ECCO_FORWARD_RUN works with NONLIN_FRSURF
50     - replace cos(yc*deg2rad) by _rA in cost_mean_heat/saltflux.F, fix the
51       imbalance diagnostics for wmean_h/sflux = 0
52     - add actual values to f_obcsn/s/w/e in ecco_cost_final.F
53     - catch the case of empty filenames in ecco_cost_init_fixed.F
54       and ecco_readparms.F
55     - fix the logic of wsalt=0.and.wsalt2=0 to wsalt=0.or.wsalt2=0 (and theta)
56       to make this statement meaningfull in ecco_cost_weights.F
57    o pkg zonal_filt:
58      - change ZONAL_FILTER S/R interface (allows to filter 2-D fields)
59      - when using rStar, filter uVel*hFacW instead of uVel
60       (tested without topography: fix a Pb of growing instability with NLFS)
61    o pkg/aim/thsice:
62     -Add capacity to read a Q-Flux to be applied in slab-mixed layer thsice_slab_ocean.F
63      (works as SST restoring)
64    o pkg/thsice:
65     -add specific parameter for salt restoring in slab mixed-layer
66       (by default equal to the temperature restoring)
67    
68    checkpoint61v
69    o pkg/kpp:
70     -add double diffusive contributions as a hack, turned off by default
71      for now, and the code can be excluded with a CPP-flag
72      EXCLUDE_KPP_DOUBLEDIFF just as EXCLUDE_KPP_SHEAR_MIX
73     -add a verification experiments to "vermix" to test this code
74    o pkg/mom_common:
75      Move computation of length scales to mom_init_fixed.F (avoid recomputation
76      at each time-steps*levels).
77    o pkg/layers:
78      Created a new package for computing volume fluxes in temperature or
79      [not yet implemented] density layers, e.g. for calculating residual
80      overturning circulations.
81    o pkg/diagnostics:
82      implement a RS type version for the set of DIAGNOSTICS-FILL subroutines
83    o fix few RS/RL type mismatch (check with ifort 11.1 "-warn all" option)
84    o pkg/mdsio (& pkg/rw): rework high level S/R interface:
85      To avoid mixing type (RS/RL) of input/output array argument,
86      replace single mixed-type array with a pair from each type (RS/RL).
87    o setting pickupSuff force to start from a pickup (even if nIter0=0): this
88      is now implemented for all pkgs (previously only done for the main pickup)
89    
90    checkpoint61u
91    o pkg/obcs:
92      - change OB?eta from _RS to _RL and put them into a separate commen block
93      - add code to read OB?eta from a file via obcs_prescribe_read: the code
94        compiles and does not destroy any other experiments, the data is read
95        properly, but the code is not tested in actual applications
96    o ini_mnc_vars.F: if available (ALLOW_CAL), use startTime_1 and 2 to
97      create a meaningful unit attribute for the time coordinate variable
98    o pkg/ebm: add plenty of missing "_d 0" ;
99       update results of experiment global_ocean_ebm (fwd + adjoint tests)
100      Notes: several pieces of code only works for (very) specific set up
101       (domain size, lat range, etc ...); should be documented & stop if one
102       of those assumptions is not meet.
103    o pkg/seaice: add missing "_d 0" in HSNOW initialisation
104       update results of experiments: lab_sea (3 fwd tests + 2 adjoint tests)
105          and offline_exf_seaice (seaicetd + adjoint).
106    o add missing "_d 0" in ShortWave flux penetration (S/R SWFRAC):
107       update results of experiments: lab_sea (4 fwd tests + 3 adjoint),
108        seaice_obcs, global_ocean.cs32x15 (icedyn & thsice) and natl_box (x2).
109    o few changes to pass when compiling with strick checking of arguments
110       across S/R (allow to find few bugs in S/R calls).
111    o pkg/seaice:
112     - seaice_evp: move if-statement out of loop (TEM) at the cost of 11 new
113       2d-fields, for slightly better performance
114    
115    checkpoint61t
116    o pkg/seaice:
117     - remove unused variables in seaice_evp
118     - reduce number of SQRT in seaice_evp and seaice_calc_viscosities
119    o eeset_parms.F, open_copy_data_file.F & ini_parms.F:
120       named file replacing SCRATCH files (for TARGET_BGL & TARGET_CRAYXT):
121       each processor opens a different file (a fix from Matt).
122    o cg2d:
123       use simple EXCH (overlap size = 1 and ignore corners), like in cg3d.F :
124       this reduces number of EXCH calls by 2 when using exch2.
125       For now, keep previous size array for gc2d_nsa.F to avoid Pb with store
126       directives and missing simple EXCH (exch_s3d_rx) adjoint code.
127    o pkg/thsice:
128       add code for Near Infra-Red albedo (from Jeff)
129       (turned on with run-time flag: thSIce_calc_albNIR, in data.ice).
130    o ini_model_io:
131       move (from packages_readparms.F & initialise_fixed.F) to ini_model_io.F
132       MNC & MONITOR initialisation calls; move MNC calls from {pkg}_readparms.F
133       to {pkg}_init_fixed.F for {pkg}= kpp, seaice & shelfice.
134    
135    checkpoint61s
136    o pkg/exch2 (exch2_rxN_cube*):
137       remove last BARRIER (no need to synchronise after getting data from shared
138       buffer (get) as long as any change to buffer (put,recv) is between BARRIER)
139    o change tiling of natl_box (from 2 to 4 tiles) to get it tested with MPI+MTH
140      and generate new output (for the 2 tests) using default rotationPeriod.
141    o pkg/exch2:
142      - always call exch2_*_cube, not exch-1 anymore, if useCubedSphereExchange=F
143        (was already the case with AUTODIFF_EXCH2 defined)
144      - add bj in exch2 arrays and S/R.
145      - can now use pkg/exch2 for regular (non CS) set-up; switch test experiment
146        MLAdjust to exch2 (identical results except with MPI -> truncation diff);
147    o add pkg/longstep for ptracer timestep a multiple of U/V/T/S timestep
148      - adds deltaT argument to the subroutines TIMESTEP_TRACER DWNSLP_APPLY
149        GAD_ADVECTION GAD_CALC_RHS GAD_IMPLICIT_R GAD_SOM_ADVECT
150      - verification experiment natl_box.longstep
151    o build_options: ifort+mpi_aces optfile (following Constantinos advise):
152      allow different versions of ifort (8 or 9) and different versions
153       of mpi (mpich or mpich2) to be used with the same optfile.
154      requires to load a netcdf module and set MPI_INC_DIR (see comments inside
155       optfile). Change testing scripts (example_scripts/ACESgrid) accordingly.
156    o pkg/seaice:
157      fix previous modif (3-level field removed) for old-pickup reading
158    
159    checkpoint61r
160    o pkg/seaice:
161     - clean up the 3-time levels of UICE,VICE,HEFF,AREA in three steps:
162      1. introduce fields for time step (N-1)
163      2. do not use levels 2 and 3 anymore (but keep them)
164      3. replace 3D versions of UICE,VICE,HEFF,AREA by 2D versions. This
165         includes changes to pkg/thsice/thsice_get_velocity.F,
166         model/src/external_forcing_surf.F, pkg/obcs/obcs_apply_seaice.F, and
167         pkg/obcs/obcs_apply_uvice.F.
168     - completely remove code for leap-frog time stepping for second order
169       advection
170     - adjusted adjoint accordingly;
171       gradient checks have improved by an order of magnitude!
172    
173    checkpoint61q
174    o pkg/seaice: fix bug in free slip boundary conditons for LSOR solver
175     - the boundary conditions along open boundaries are unclear, because the
176       associated masks are set to zero and are thus treated as closed when
177       applying the slip-boundary conditions.
178     - move initialisation of grid variables from seaice_init_varia to _fixed
179    o adding doc/diags_changes.txt
180    o model/src:
181      do_the_model_io: rename few pkg S/R which are called from do_the_model_io,
182       to avoid "_diags" naming if no relation to pkg/diagnostics.
183      ini_theta,ini_salt: fix (at least compile the code) reading from NetCDF
184       file and only call PLOT_FIELD_XYZ if debugMode=T.
185      remove few PLOT_FIELD_XY calls outside initialisation.
186      remove few unnecessary BARRIER.
187    o pkg/salt_plume: add SaltPlumeSouthernOcean to allow disabling
188      of salt_plume package in Southern Ocean
189    o pkg/thsice:
190     - fix hOceMxL in overlap (needed for sea-ice advection);
191       update output of experiment global_ocean.cs32x15.icedyn.
192    o pkg/seaice:
193     - make the (placeholder-)tracer IceAge a little more meaningful
194      by avoiding ridging of age due to convergent ice flow
195     - add diagnostics for surface temperature, atmospheric and oceanic
196       heat flux, and atmospheric and oceanic ice growth
197    
198    checkpoint61p
199    o eesupp (global_max & global_sum):
200     - add one more element to buffer (start at index 0) for GL_MAX/SUM output;
201     - remove starting & endding barrier (no longer needed)
202    o pkg/mdsio, writelocal:
203       works also in multi-threaded when LOCBIN_IO_THREAD_SAFE is undefined
204       (remove the STOP): uses shared buffer IO to store data from all threads
205       and then let master-thread write nThreads tiles.
206    o pkg/mdsio (read/write field):
207     - tiled IO done in 1 piece (all levels at a time);
208     - new header file "MDSIO_BUFF_3D.h" with 3-D buffers.
209     - multi-threaded: allow to read/write local (non-shared) array
210       (was already working with singleCpuIO ; now works also without);
211       => no longer needs barrier call after reading a file (added inside
212       mds_read/write field).
213     - move barrier calls outside gather/scatter_2d to mds_read/write_field
214    o pkg/obcs/exf
215      - exf_getffieldrec.F: add a few ". _d 0" and
216                            add code to catch the case fldperiod = 0.  
217      - obcs_precribe_read.F: change if statements so that they match
218                              the variable type (_RL)
219      - add a separate exf_iprec_obcs to exf_set_obcs (by default equal to
220        exf_iprec) as part of namelist EXF_NML_01
221    o pkg/mdsio:
222      - read/write tiled (local) files: read/write 1-level tile chunk at a time
223        (instead of segment of length sNx); expected to speed up tiled IO.
224    o pkg/exch2:
225      - take buffer copy from/to array out of S/R exch2_send/recv into new
226        S/R exch2_put/get ; Exch of local variable now works with MPI+MTH
227        (tested by removing commom block statement in SOLVE_FOR_PRESSURE.h).
228      - ad version of send/recv no longer needed (but needs exch2_ad_put/ad_get)
229      - simplify argument list of S/R exch2_get_uv_bounds and exch2_get_scal_bounds
230        (which replaces exch2_get_recv_bounds & exch2_get_send_bounds) by
231        including Topology header file (and common blocks).
232      - implement EXCH_IGNORE_CORNERS in scalar exchange (rx1);
233        remove 2nd exch call in exch2_s3d_rx (no longer needed).
234      - document S/R arg. list (+ update some comments)
235    o pkg/seaice:
236      - added SEAICE_CLIM_AIR code, which permits modulation of surface air
237        temperature and humidity over sea ice based on climatological values.
238      - clean up computation of Hibler+Bryan (1987) stress coupling for the case
239        of LSR (this change is expected to change the results slightly because now
240        it uses slightly difference moduli from the second last LSR solution, but
241        that is more consistent with the stress computations; this part of the code
242        is not tested in the verification experiments)
243      - fix diagnostics for flux of ice in case of B-grid
244      - turn strain rates eij and press into global fields within global
245        common block in SEAICE.h for more straighforward diagnostics
246      - fix diagnostics for principal stress components, press, zeta, eta
247        to give something meaning full
248    o change tiling of global_ocean.cs32x15 (12 tiles, 32x16) and generate
249      new output (all 4 tests) using default rotationPeriod.
250    o pkg KPP:
251      - add flag (LimitHblStable) to avoid limiting BL depth under stable conditions
252      - fix vertical indices in RI_IWMIX (match between KPP grid from 0 to Nr+1
253        and normal grid from 1 to Nr)
254    o Fix computations of L4rdt in mom_calc_visc.F
255    o eesupp:
256      new S/R ALL_PROC_DIE (like EEDIE, without irrelevant threads err msg):
257      should be called before a "stop" if we know that all process are going
258      to stop; if one Proc does call this S/R, will hang in MPI_FINALISE.
259    
260    checkpoint61o
261    o pkg/exch2: change check_depths to issue just a warning (instead of error+stop)
262    o model/src/ini_curvilinear_grid.F:
263       compute angleSin/CosC when they are not read from a file
264    o pkg/seaice:
265       add pseudo time stepping for LSOR
266    o pkg/exch2:
267       temporary fix for exch2_s3d_rx; update results of exp. hs94.cs-32x32x5.impIGW
268    o pkg/seaice:
269       Adding separate sea ice albedo, drag coefficients, and HO in Southern
270       Ocean from those in Arctic Ocean.  See *_south in SEAICE_PARAMS.h
271    o SingleCpuIO:
272       fix bug put before chkp61n (May 11), when more than 2 MPI cpu are used.
273    o pkg/seaice:
274       put exchanged variable in (local) common block for MPI+Multi-Threads
275       to work (necessary with exch1, and for now with exch2 too).
276    o verification: to get more experiments tested with mpi, mth and mpi+mth,
277      change tiling of:
278       aim.5l_Equatorial_Channel, aim.5l_LatLon, dome, exp4, global_ocean.90x40x15,
279       hs94.cs-32x32x5, MLAdjust, offline_exf_seaice & tutorial_plume_on_slope
280      update output of exp:
281       exp4, global_ocean.90x40x15(+.dwslp), MLAdjust(all 5),
282       tutorial_plume_on_slope and hs94.cs-32x32x5 (use default rotationPeriod)
283      + ideal_2D_ocean: use default rotation period + test Global_Sum_SINGLECPU
284                       (note: output.txt generated on faulks using only 1 tile)
285    o eesupp & mdsio (SingleCpuIO):
286     - remove MISSING_TILE_IO (from MDSIO_OPTIONS.h), replaced by run-time
287       parameter "W2_useE2ioLayOut" (read from file "data.exch2").
288       Note: was not effective for globalFile & useSingleCpuIO=F; now fixed.
289     - move MDSIO_SCPU.h (pkg/mdsio) to EEBUFF_SCPU.h (eesupp/inc).
290     - fix GLOBAL_SUM_SINGLECPU when using Exch2; re-use same buffers and same
291       gather/scatter S/R as with SingleCpuIO (=> 1 less 2D global RL array).
292    o pkg/exch2:
293     - new code to set-up W2-Exch2 topology (replace matlab-topology-generator):
294       read parameter file "data.exch2" if it exists; otherwise try default regular
295       cube without blank-tile; new header file "W2_EXCH2_SIZE.h";
296     - update matlab-topology-generator (exch2_setup_cs6_print.m) to be compatible
297       with new code (not to be used, just as a backup solution).
298     - add examples (e.g., for lat-lon-cap_120) of parameter file "data.exch2"
299       in utils/exch2/input.
300    
301    checkpoint61n
302    o eesupp & mdsio (SingleCpuIO):
303      - move mapping to global io-buffer inside gather_2d/scater_2d: this save
304        memory (1 less 2D global RL array); skip 1 buffer copy; and only send/
305        receive real*4 array (instead of real*8) to read/write 32.bit files.
306        (new template for gather_2d/scater_2d, new set of S/R MDS_PASS_R4,8toRL,S
307         and remove new mapping S/R)
308    o pkg/mdsio: in preparation for topology-generator within pkg/exch2:
309      - Change declaration of SingleCpuIO buffer, reduced to only 1 dim.:
310        xyBuffer_size, which is set to W2_ioBufferSize from W2_EXCH2_PARAMS.h
311        when using exch2. Add S/R to map global io-buffer to global model array.
312      - uses exch2_global_Nx,y instead of exch2_domain_nxt,nyt.
313    
314    checkpoint61m
315    o write_utils : change WRITE_1D_R8 to WRITE_1D_RL
316      and add 3 other S/R for other types (R4,R8,RS).
317      Change calls to WRITE_0D/1D_R[4,8,S,L] to match the type of argument.
318    o eesupp/inc/CPP_EEMACROS.h (EXCH & GLOBAL_SUM/MAX macros):
319     - ensure suffix (_R4,_R8,_RS,_RL) correspondance between macro and S/R ;
320     - reduce number of macro definitions (keep only those which are used);
321       can always call directly the corrresponding S/R if needed.
322     - everywhere in the code: change macros (EXCH & GLOBAL_SUM/MAX) suffix
323       _R4/_R8 to _RS/_RL when applied to _RS/_RL variable.
324     Fixed wrong type of arg in:
325       atm2d/put_ocnvars.F cheapaml/cheapaml.F ocn_compon_interf/ocn_apply_import.F
326       ctrl/ctrl_map_ini_ecco.F seaice/seaice_do_diags.F seaice/seaice_model.F
327     To fix: global_sum of var in common block is wrong (multi-threaded) in:
328       dic/dic_atmos.F ebm/ebm_area_t.F ebm/ebm_zonalmean.F sbo/sbo_calc.F
329     To fix: aim_v23/aim_do_co2.F (BARRIER & GLOBAL_SUM within bi,bj loops)
330    o adjustment.cs-32x32x1: test "blank tiles" when compiling with mpi; 2nd
331      "nlfs" mpi test is going to stop when checking for unconnected tile egdes.
332    o eesupp/src: new S/R to stop everyone when 1 (or more) Proc. find an error
333    o pkg/exch2: new S/R EXCH2_CHECK_DEPTHS to check that unconnected tile
334      edges are closed (zero depth); might happen with "blank tiles";
335      for now, disabled if using OBCS.
336    o tools/gemake2: delete modifs from March 27-29 2009 (with option "-mpi":
337      link *_mpi files from "MODS" dir) to return to a strait-forward behavior.
338    o move read_write.F to write_utils.F ; new parameter (maxLengthPrt1D)
339      to reduce length of 1.D array print in STDOUT.
340    o adjustment.cs-32x32x1: changed to oceanic test with 1 continent
341      + use 48 tiles (16x8): this will allow to test "blank tiles".
342    o start to test MPI + multi-threaded (change testreport to skip tests
343      where number of tiles do not match).
344    o genmake2: add option "-omp" to turn on Open-MP ;
345      passed to testreport (if using -mth) ; merge few (*+mth) optfiles.
346    o pkg/exch2 (+ utils/exch2): ignore blank tiles (instead of removing them)
347      and keep the original tile numbering. Note: compatible with old
348      W2_EXCH2_TOPOLOGY.h & w2_e2setup.F topology files.
349    
350    checkpoint61l
351    o Overlaps had been forgotten in calculating ijk keys : fixed
352    o fix cyrus makedepend for gcc 4.4
353    o experiment fizhi-cs-aqualev20:
354      switching to new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE)
355      and generate new output. Note: new output is much closer to the old
356      one (v1.8) generated with pgf77 -O2 on Mar 14 2007 than it is from
357      the previous one (v1.9) generated with pgf77 -O0 on Jun 13 2007.
358    o pkg/fizhi:
359     - change to avoid indices going deliberately over array-bounds
360     - remove unnecessary MPI stuff
361     - perpetual spring equinox with "#define FIZHI_USE_FIXED_DAY"
362     - new version of S/R GETPWHERE available with #define TRY_NEW_GETPWHERE:
363       does not go over array-bounds and therefore returns reliable output.
364     - in fizhi_driver.F & fizhi_turb.F, fix "get_alarm" calls:
365       this S/R has 4 output arguments, which are used inside "get_alarm";
366       when it is called with the same variable "ndum" in place of several
367       output arguments, this produces weird side effect inside "get_alarm"
368      (e.g., datein=dates(n) is overwritten by timein=times(n) since both
369       datein & timein, resp. 2nd and 3rd arg., are pointed to the same "ndum"
370       address) and produces error.
371    o tools/gemake2: (March 27-29 2009)
372      with option "-mpi": link *_mpi files from "MODS" dir (this is what
373      testreport does).
374    o lab_sea experiment: change from 2x1 tiles to 2x2 tiles and regenerate output
375    o pkg/seaice: fix bug in new version of S/R SEAICE_LSR.F:
376       update lab_sea.lsr & lab_sea.salt_plume results
377    o pkg/seaice:
378      Major overhaul of the LSOR solver: change discretization from original
379      finite differences to finite volume. The old routine is still in the
380      file seaice_lsr.F and can be turned on with the CPP-flag
381      SEAICE_OLD_AND_BAD_DISCRETIZATION
382      Along with this change, the discretization of the strain rates is changed.
383      The same flag turns on the old discretization in seaice_calc_strainrates.F
384      All verification experiments with seaice are affected (except for
385      seaice_exf_offline); global_ocean.cs32x15/input.icedyn recovers the old
386      results by setting the above flag.
387      Further changes involve changes in defaults:
388      - ALLOW_FLOODING is defined and turned on by default
389      - SEAICEadvSnow = .true. is now the default
390      - SEAICEadvSalt = .true. is now the default
391      - SEAICEadvAge  = .true. is now the default
392      - SEAICE_clipVelocities  = .false. is now the default
393                                         (as per J. Zhang's recommendation)
394      - B-grid, and thus not tested: SEAICE_TEST_ICE_STRESS_1/EXPLICIT_SSH_SLOPE
395        is defined, SEAICE_TEST_ICE_STRESS_1 is renamed into SEAICE_BICE_STRESS
396      - seaice_growth: replace computation of UG by a simple copy from wspeed
397    
398    checkpoint61k
399    o pkg/seaice: a few bug fixes mostly concerning the metric terms:
400      seaice_lsr: fixed a few metric terms,
401                  affects lab_sea.lsr, lab_sea.salt_plume, seaice_obcs
402                  add more debugging diagnostics
403      seaice_evp: removed superfluous many metric terms of FV discretization
404                  of stress divergence
405                  affects lab_sea, lab_sea.hb87
406      seaice_ocean_stress: removed superfluous many metric terms of FV discretization
407                  of stress divergence for non-evp solver
408                  (this part is not tested anywhere)
409      seaice_calc_strainrates: fixed a bug in no-slip boundary conditions,
410                  they were effectively only half slip
411                  affects lab_sea.hb87
412      updated all relevant verification experiments (except lab_sea//output_adm.txt
413        which was left over, but fails at level 7 & 6)
414    
415    checkpoint61j
416    o pkg/seaice: turn a few hard wired parameters into run time parameters
417    o pkg/seaice/exf/monitor: turn netcdf coordinate variable T into model
418      time in seconds as promised by the usints in seaice_monitor and exf_monitor
419    o pkg/mnc: fix the coordinate variables for multi-tile curvi-linear grids
420      that are not cubed-sphere grids
421    o pkg/seaice: fix a bug for the rare case of SEAICE_VECTORIZE_LSR
422    o pkg/ctrl:
423      fix bug in ctrl_depth_ini.F (EXCH_XYZ was applied to 2-D field xx_r_low)
424    o non-hydrostatic (calc_gw.F):
425      fix viscA4 on CS-grid + fix diagnostics: Wm_Diss & Wm_Advec
426      update output of exp. global_ocean.cs32x15.viscA4
427    o remove backward compatibility for thetaMin,phiMin
428      (replaced by xgOrigin,ygOrigin on Jan 27, 2009)
429    o pkg/exf: fix a serious bug in exf_set_uv.F: do a rotation of the
430      interpolated wind field not only for curvilineargrid=.true., but also
431      for a rotated grid (rotateGrid=.true.)
432    o pkg/exf: add capability to bypass interpolation for runoff
433      by setting yet another CPP-flag
434    o eesupp/src, B-grid exchange:
435      add simple (6 tiles, non MPI) CS exch + standard interface S/R.
436    o autodiff
437      new CPP option ALLOW_TAMC_SINGLEPREC_COMLEV
438      allows to switch to single-prec common blocks;
439      corresponding switch occurs in tamc.h, integer isbyte
440      TAF store directivs "byte" and "kind" seem equivalent;
441      Most tamc.h have been updated correspondingly.
442    
443    checkpoint61i
444    o autodiff:
445      fix autodiff_sore/_restore indices for obcs
446      (spotted by I. Hoteit, M. Mazloff)
447    o pkg/autodiff, pkg/ctrl:
448      Add flag to reduce all tapelev I/O to single-prec.
449      In data.ctrl set
450        doSinglePrecTapelev = .TRUE.
451    o model/src/ini_curvilinear_grid.F, new grid-file format without EXCH2:
452      check in hack for SX8 compiler (for dxV, dyU); remove it afterwards.
453    o pkg/shelfice: fix bug with SHELFICEconserve flag, prepare for
454      real fresh water flux (not yet)
455    o pkg/mdsio & rw:
456     - add argument & option to S/R MDS_WRITEVEC_LOC (avoid Open/Close & write-meta)
457     - add simple interface S/R to MDS_WRITEVEC_LOC in pkg/rw: WRITE_GLVEC_RX.
458    o pkg/flt:
459     - replace FLT_INIT by 3-steps standard initialization S/R: readparms,
460       init_fixed & ini_varia.
461     - clean-up & simplify linear interpolation S/R:
462       move flt_bilinear.F -> flt_interp_linear.F ; add arg. myThid.
463     - fix some indices (mainly vertical index) ; add IMPLICIT NONE.
464     - more efficient I/O, using new options of MDS_WRITEVEC_LOC S/R.
465     - add vert. coordinate & horiz. indices to output files.
466     - change vertical position in initial condition, from index to depth [m].
467     - store horizontal (decimal) indices i,j in common block (instead of coord. x,y)
468       (easier to get to a curvilinear grid) ; delX,delY no longer used.
469    o pkg/ggl90: a few modifications:
470     - fix bottom boundary condition, and interpolation of KappaE
471       near top and bottom
472     - use same set of viscosity/diffusivity for TKE/momnetum/tracer
473     - add smoothing option as in Blanke and Delecluse (1993) (--> ALLOW_GGL90_SMOOTH)
474     - add a few options for mixing-length upper limit (--> mxlMaxFlag)  
475    o rename thetaMin,phiMin -> xgOrigin,ygOrigin
476      (maintain temporary backward compatibility, until next checkpoint)
477    
478    checkpoint61h
479    o pkg/diagnostics with "periodic averaging diagnostics":
480      fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
481    o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
482    o pkg/obcs: fix loop ranges for balancing code
483    o pkg/flt:
484     - improve criteria for finding which tile owns a float.
485     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
486    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
487      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
488      with ocean biogeo)
489    o pkg/flt:
490     - do some cleaning and fix the restart ;
491     - add output.txt in flt_example/results to get this pkg tested.
492    o genmake2: add an EXTENDED_SRC option and flag.
493       for now, cannot be turned on on command line (only through genmake_local)
494    o pkg/mdsio: read/write vector:
495     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
496     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
497       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
498     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
499      (drop to 4 digits matching for grad). But this test does not look very
500      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
501    
502    checkpoint61g
503    o pkg/flt:
504      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
505       + make OPTIONS file more standard.
506      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
507      - fix _BYTESWAPIO CPP-Flag
508      - standard reading of file-parameter "data.flt"
509      - fix argument list of S/R FLT_RESTART
510      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
511    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
512    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
513      a still unfixed compiler/optimization bug
514    
515    checkpoint61f
516    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
517      update results of global_ocean.cs32x15.icedyn test.
518    o move getcon.F from model/src to pkg/fizhi.
519    o pkg/exf: add parameter for extrapolation of temp up to the surface
520       and option to prevent negative evap (in bulk_largeyeager04 only).
521    o Prather Advection scheme: fix tracer conservation for divergent flow
522      (e.g., when using NonLin Free-Surface).
523    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
524    o gmredi (Visbeck-variable-K):
525     - add more parameters to Visbeck-variable-K.
526     - use a 5 points average for dSigmaR in Visbeck-K calculation
527       (more "homogenous": same stencil and same weights as in dSigmaH)
528     - update output of ideal_2D_oce experiment.
529    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
530      (#undef REAL4_IS_SLOW)
531     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
532       coordinate variable
533     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
534       (surface forcing fields), removes some of the functionality
535     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
536     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
537       probably not all: copy _RS surface flux fields to RL field before
538       calling DIAGNOSTICS_FILL
539     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
540       real*4 (CALL EXCH_*_RS) versions.
541     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
542       (generate new output).
543    
544    checkpoint61e
545    o gmredi (Visbeck-variable-K):
546      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
547      - change computation of Visbeck-K where Slope > Smax :        
548        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
549        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
550    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
551      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
552    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
553    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
554      does not become too large (to avoid precision problems in implicit-diffusion
555      solver); update ideal_2D_oce output.
556    o pkg ggl90:
557      - in ggl90_cal.F: compute only one set of visc/diff, used to
558        step forward TKE/T/S/momentum
559      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
560        have Prandlt =1)
561    o gmredi (fm07):
562      - add lower limit on Transition layer thickness + lower limit on 1/lambda
563      - allow to set few more params from data.gmredi
564    o pkg ggl90:
565          - add missing sqrt(2) factor in computation of mixing length
566            scale in ggl90_calc.F
567            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
568    
569    checkpoint61d
570    o adjoint modifs
571      - adapt to new field rhoInSitu
572      - allow to revert from StoreDynVars2D, StoreDynVars3D
573        to individual fields
574        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
575    o store 3-D (in-situ) density in commom block (DYNVARS.h)
576     - save 1 rho computation.
577     - no longer modify T & S inland when using down_slope pkg.
578    o gad_som : allow to switch to SOM advection for T & S without corresponding
579      pickup files (using new S/R: MDS_CHECK4FILE).
580    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
581      (for useSingleCpuIO to work in multi-threaded)
582    o pkg/shelfice:
583     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
584       with SHELFICEtopoFile in data.shelfice
585     - move code for reading ice shelf topography and modifying hFacC into separate
586       subroutines of the shelfice package
587     - separate initialisation of "fixed" and "variable" variables
588     - kTopC is not (yet) replaced by kSurfC, although this is possible
589    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
590    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
591      and rename:
592      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
593      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
594    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
595    
596    checkpoint61c
597    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
598      to add mass source/sink of fluid in the interior (3-D generalisation
599      of oceanic real-fresh water flux).
600    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
601    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
602    o new pkg: down_slope
603      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
604      - presently, modify T & S inland (dwnslp_calc_rho.F).
605        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
606      - implementation for ocean in P-coords not tested.
607      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
608    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
609      (to facilitate conversion of oceanic pkg to p-coordinate).
610    o change FIND_RHO to FIND_RHO_2D :
611      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
612    o new pkg: cheapaml
613    
614    checkpoint61b
615    o exch2:
616      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
617      - no longer depend on the order sequence (N,S,E,W).
618      - 3rd exchange no longer needed (tested with 24 tiles).
619      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
620      - exch_UV_A-grid readily available (but not yet tested).
621      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
622      (both are no longer needed) in exch_uv: no effect in forward run; but
623       get truncation error differences with adjoint exch.
624    o exch2:
625     - change index-bounds storage (moved from target to local tile,
626       more intuitive this way) ; rename/remove some variables.
627     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
628    
629    checkpoint61a
630    o exch2/matlab-topology-generator:
631      fix bug in index bounds for N-S internal exchange (hard to tell if this
632      had any effect on the solution).
633    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
634      is exceeded
635    o testreport: modify syntax of awk, so that it works also with
636      awk, and not only with nawk and gawk
637    
638    checkpoint61
639    o autodiff
640      Change default for TAF usage by removing argument '-nonew_arg'
641      This changes TAF subroutine argument list (ordering of active var.)
642      Omission of this flag leads to incompatibility w.r.t. TAMC
643      To restore TAMC-compatibility, need following modifs:
644      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
645      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
646      Tested TAF version is 1.9.22
647      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
648    
649    checkpoint60
650    --->>> This is the last checkpoint for which generating the adjoint
651    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
652    --->>> by default.
653    --->>> Future checkpoints will ommit this flag by default.
654    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
655    o pkg/grdchk: Add gradient check to etan0 perturbations.
656    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
657    o pkg/autodiff: more flexibility in zeroadj.
658      model/src: modifying do_oceanic_phys.F accordingly.
659    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
660    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
661      special setup of gmredi for which the adjoint is stable
662      enough for parameter optimization.
663    o bridging the gap between eddy stress and GM.
664      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
665          along with a change in CPP option (now ALLOW_EDDYPSI).
666      -> when using GM w/ GM_AdvForm:
667          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
668          is applied either in the tracer Eq. or in momentum Eq.
669          depending on data.gmredi (intro. GM_InMomAsStress).
670      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
671      The key modifications are in model/src/taueddy_external_forcing.F
672      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
673    
674    checkpoint59r
675    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
676      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
677      fix option to read coriolis(@ cell-corner) from files with CS-grid.
678    o pkg/mnc: add some attributes to standard 1D-coordinate variables
679    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
680      mass points, when using mnc for output
681      - add runtime parameter (missing_value, missing_value_int) to override
682        default (which is the value of getcon('UNDEF'))
683    o pkg/mnc: prepare mnc for the actual use of missing values with the
684      diagnostics package: small fix in mnc_cw_readwrite.template and more
685      initialisation of never used fields
686      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
687      versions
688    o pkg/thsice/thsice_ini_vars.F added default initial values so that
689      thermodynamics sea ice solver does not blow up when some initial fields
690      are missing.
691    o move from external_forcing_surf.F to ini_forcing.F
692      the p-coord. hack consisting in using pLoad to set phi0surf ;
693      update output of tutorial_global_oce_in_p (affected @ truncation level).
694    o Freshen up a bit hs94.1x64x5, notably:
695      remove rotationPeriod and tRef=5*0. (adjoint only), and add
696      exactConserv=.TRUE.
697    o pkg/generic_advdiff:
698      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
699      applies to files where Temperature & Salinity 2nd Order moments are used.
700    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
701      this uses a dynamically allocated internal state data structure
702      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
703      and requires a fortran 90 compiler
704    
705    checkpoint59q
706    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
707       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
708    o Refresh tutorial_global_oce_biogeo, notably:
709      - change bathymetry (put back seamounts in ACC, use hFacs)
710      - change EOS (POLY3 --> JMD95Z)
711      - use Bryan-Lewis vertical diffusivity
712      - use multidimensional advection
713      - remove old virtual virtual in dic pkg, now done through ptracer pkg
714      - change a couple of parameters in dic pkg
715    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
716    o pkg/obcs: change default to OBCSfixTopo = .true.,
717      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
718      - replace "debugMode" with "debugLevel .GE. debLevB"
719    o implementation of TAF directives for gchem,cfc,dic
720    o remove "exp5" (replaced by tutorial_deep_convection).
721    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
722      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
723      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
724      --> changes results in exp4, seaice_obcs
725    o tutorial_deep_convection :
726      update the set-up and increase resolution and domain size ; start
727      from pseudo initial conditions = output at t=120mn in order to see
728      something happening when running testreport.
729    o pkg/seaice: add os7mp as an advection scheme
730                  add check for advection schemes
731                  add a flag for restoring T and S underneath sea ice
732    o pkg/my82: add netcdf-support and diagnostics
733    o thsice pkg:
734      - Now hsMax limits snow height by turning it into ice following
735        flooding scheme (and now conserving energy)
736      - Slight rewriting of the formula in thsice_calc_thick.F
737      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
738      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
739    
740    checkpoint59p
741    o gchem / dic / cfc :
742      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
743      - add new parameter files: "data.dic" & "data.cfc" ;
744      - various re-arrangement in initialisation & header file ;
745      - fix tutorial_global_oce_biogeo for multi-threaded test.
746    o pkg/dic: test for "pickup_dic" file when restarting ;
747      if no pickup-file, can restart with a re-initialised pH (same as it did
748      before) providing pickupStrictlyMatch is set to False.
749    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
750      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
751    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
752      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
753    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
754     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
755       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
756    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
757       scheme to use for vorticty-term ;
758     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
759       (with default selectVortScheme, return to original discretisation)
760     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
761    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
762    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
763      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
764      also fix diagnostics VISCAHW & VISCA4W.
765    
766    checkpoint59o
767    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
768    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
769      move a few statemens out the main loop into separate loops
770    o pkg/shelfice:
771      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
772        (kg/m^2/s), does not break tests, because in verification/isomip,
773        rhoConstFresh=rhoConst (by accident)
774      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
775      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
776        new file model/src/seawater.F, so that they are available for all pkgs.
777      - convert potential temperature into in-situ temperature. This changes the
778        isomip tests => update tests
779    o add a flag writePickupAtEnd (default=true) to be able to suppress
780      writing a pickup at the last timestep
781    o tools/mpack-1.6 :
782      - disable automake (not working) and autoconf (not needed).
783      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
784        also cleaner with much less compilation warnings.
785    o pkg/profiles:
786      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
787      (for "less than 32 characters name" compiler requirement)
788    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
789      conditions that have a different sampling frequency than S/T/U/V obcs
790    o pkg/diagnostics (stats-diags):
791      - fix global Min/Max in case 1 processor get only empty tiles
792    o genmake2: replace (4 times)
793         make genmake_tc_1.o >> genmake_warnings 2>&1
794      with
795         COMM="$CC $CFLAGS -c genmake_tc_1.c"
796         echo $COMM >> genmake_warnings
797         $COMM >> genmake_warnings 2>&1
798      to make genmake2 always see the value of CC as specified in the optfile.
799    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
800      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
801      - modify verification advect_cs test to test SOM-advection on CS-grid.
802    o pkg/ctrl:
803      - Rewrite of ctrl_map_ini_ecco.F,
804        introducing a generic routine (ctrl_map_ini_gen.F).
805      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
806    
807    checkpoint59n
808    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
809      number in dedicate array "hdiag":
810      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
811        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
812      - many small changes (integer format) for large number of diagnostics
813      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
814        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
815    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
816      usingSphericalGrid, this allows to define the rotated grid coordinates
817      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
818      geographical coordinates according to the inverse of the rotation defined
819      by the Euler angles, so that Coriolis parameter and online-interpolation by
820      exf works with the geographical coordinates on XC/YC/XG/YG.
821      Naturally, this feature does not work with all packages, so some
822      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
823      profiles), because there the coordinates are assumed to be regular
824      spherical grid coordinates.
825    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
826      - introduce isopycnal diffusion coefficient control.
827    o tools/adjoint_options:
828      - additional control vector components.
829    o pkg/mnc: have mnc create marginally meaning full coordinate variables
830      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
831    o pkg/mypackage:
832      - add example of read/write pickup for state-var ;
833      - add entry points to the main code for state-vars diags & write-pickup.
834    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
835      transitions for useExfYearlyFields
836      - add new subroutine that determines the file to read from for
837        use*YearlyFields = .TRUE. and .FALSE.
838      - add a verification experiment to global_with_exf that tests
839        useExfYearlyFields with USE_EXF_INTERPOLATION defined
840    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
841      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
842      subroutines (which could be generated from a template, because they are
843      almost identical), for now they are included in obcs_prescribe_read.F for
844      simplicity
845    o pkg/exf:
846      - add a little more diagnostic to exf_interp_read (in analogy to
847        mds_read_field, can be turned off with debugLevel < debugLevA=1)
848      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
849        ugly but fast by unrolling short inner loops, inserting a unroll=8
850        directive in routine lagran, and splitting a loop and making do while the
851        outermost loop (the latter requires the intoduction of index arrays)
852    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
853    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
854      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
855    o verification/seaice_obcs: updated for restart test and latest options
856    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
857      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
858      for now this is only available for the C-grid code and also within
859      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
860    
861    checkpoint59m
862    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
863      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
864    o gad_som : fix flux output (& diagnostics) to have same units as other  
865      advection scheme fluxes (was previously multiplied by deltaT).  
866    o added verification/seaice_obcs both to test seaice open boundaries
867      and to provide an example matlab scrpt for generating them
868    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
869    o pkg/salt_plume: clean up salt_plume_frac.F to
870      remove redundancy in PlumeMethod 1 and 4
871    o pkg/kpp: added saltplume diagnostics
872    o pkg/obcs and pkg/seaice:
873      - do not set uice and vice to zero when OB*icefile are unspecified
874      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
875      - moved seaice tracer obcs after call to seaice_growth
876    o pkg/salt_plume: added various options for salt plume depth
877      criterion and for vertical distribution of the salt
878    
879    checkpoint59l
880    o pkg/ptracers: new version of ptracers pickup:
881      read meta file and write only fields which are needed to restart.
882      ( same logic as main pickup file ; also using pickupStrictlyMatch )
883    o pkg/seaice:
884      - add timescale for melting due to warm mixed layer as a means of
885        setting SEAICE_availHeatFrac more conveniently
886      - add a CPP-flag/runtime parameter check for flooding algorithm
887      - reformulated availHeat in seaice_growth.F to be independent of AREA
888    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
889      unit changes
890    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
891    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
892      SX vector computer.
893    o pkg/seaice:
894      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
895        seaice forcing fields can now be read only through pkg/exf
896      - removed some unused halos
897    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
898    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
899      or U/VICE from U/VWIND before computing U/VSTRESS
900    
901    checkpoint59k
902    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
903      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
904    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
905      all experiments pass when compile with un-initialised var. checking option.
906    o added pkg/salt_plume
907    o script to test restart (for now, in MITgcm_contrib/jmc_script)
908    o pkg/seaice: new read/write pickup version.
909      read meta file and write only fields which are needed to restart.
910      ( same logic as main pickup file ; also using pickupStrictlyMatch )
911    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
912    o lab_sea.hb87: modify the domain & update output.hb87.txt :
913      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
914      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
915      process. Fixed here by closing the domain at the Northern boundary.
916    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
917    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
918      a set of consecutive levels in/from a 3-D array.
919    o pkg/ptracers:
920      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
921      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
922    
923    checkpoint59j
924    o in pkgs: dic, obcs, offline, rbcs:
925      standard way to compute coeff. for time interpolation between 2 time reccords
926      which retains full precision (& make results less dependent on compiler).
927      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
928    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
929      packages instead of reading ice cover and wind speed separately
930    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
931     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
932      to allow to compile customized code before the update)
933    o cleaning-up:
934      - fix CPP instruction syntax in pkg/obcs
935      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
936        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
937      - fix some threads issue in IO parts.
938    o pkg/dic:
939      - add tons of "_d 0" (--> much better testreports !)
940       and then update outputs of tutorial_global_oce_biogeo
941    o pkg/mom_fluxform:
942      add a special version of momentum advection intended to conserve momentum
943      next to a bathymetry step or a coastline edge. (default = off = #undef)
944    o new read/write pickup version:
945      - for now, only implemented for main (mdsio) pickup file.
946      - write out only what is needed to restart; merge pickup_nh , pickup_ph
947        and main pickup together.
948      - read meta file; read only what is needed to restart; stop if a field
949        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
950        if it make sense (even if the restart is not perfect).
951      - if no meta file, assume that pickup to read corresponds exactly to
952        a pickup that would currently be written.
953      - read pickup written in the old format (until checkpoint59i) if it
954        recognizes an old meta file (no field-list).
955      - add a meta file in exp. which starts from a pickup: 2 cases:
956        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
957         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
958        b) a meta file describing the content of the associated pickup file
959         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
960    o pkg/mdsio & pkg/rw:
961      - new routine to read a meta file ; new set of routine to read
962        Multiple-fields file (with meta file).
963    o added open boundary conditions capability for seaice
964        HSNOW, HSALT, UICE, and VICE
965    
966    checkpoint59i
967    o adjoint:
968      * fix multiDimAdvection adjoint
969        (partial recomputation problem by TAF for fVerT(:,:,kDown)
970        and comlev1 size definition (maxpass vs. max. number of tracers)
971      * verification/global_ocean.90x45x15 adjoint now tests
972        NLFS and multiDimAdvection using DST3 (=30)
973      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
974    o pkg/kpp: add "_d 0" to real constant (if missing);
975      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
976      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
977    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
978      for internal parameters related to restart process (formerly from PARAMS.h)
979      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
980    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
981      as argument. (only atm2d & obcs write_pickup have not yet been updated)
982    o pkg/monitor:
983      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
984      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
985      - account for deep Atmosphere factor and density factor (anelastic)
986    o added open boundary conditions capability for seaice HEFF and AREA
987    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
988      thermodynamics
989      - requires a little reorganization, which affects the testreport results
990        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
991        so that now the conservative form is tested
992      - add a few comments
993    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
994    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
995    o add new diagnostics to seaice: advective, diffusive fluxes (only for
996      multidim-advection, for scheme 2 they are not filled) and transports,
997      thermodynamic growth rates
998    o change units of EmPmR (inside the code, + within coupling interface)
999      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
1000      Affects results @ truncation level (cg2d match) and update output of
1001       experiments: lab_sea(6), global_ocean.90x40x15(10),
1002      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
1003      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
1004      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
1005      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
1006    
1007    checkpoint59h
1008    o pkg/exf:
1009      - improve vectorization by moving if-statement out of loops in
1010        exf_mapfields, exf_radiation
1011      - exf_bulkformulae.F: introduce 2D fields and vectorize code
1012    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
1013    o testreport:
1014      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
1015        monitor & update offline_exf_seaice exp. output.
1016      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
1017    o pkg/seaice:
1018      - bug fix in the evp solver: boundary conditions were affected be
1019        masking of zMax/zMin (changes results)
1020      - minor bug fix in boundary conditions in seaice_calc_strainrates
1021        (changes results for no_slip)
1022      - seaice_lsr.F: make interpolation of eta dependent on boundaries
1023      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
1024      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
1025        stress formulation and no-slip boundary conditions
1026    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
1027      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
1028    o pkg/seaice: a first HSALT time stepping equation has been checked in
1029    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
1030      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
1031      without requiring DO-IF statements
1032    o pkg/thsice:
1033      use continuous power-law function for partition of energy between lateral
1034      melting/freezing and thinning/thickening ; old code using step function
1035      still available with #undef THSICE_FRACEN_POWERLAW
1036      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
1037    o testreport: change AD testing : check against results/output_adm.txt
1038      using same scripts as for forward test.
1039    
1040    checkpoint59g
1041    o adjoint testing: in preparation for changing testreport:
1042      - output format: cost and grad written on separated lines
1043      - ad output results in directory "results" (instead of "results_ad")
1044    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
1045    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
1046    o pkg/ecco: allow user defined cost function contributions
1047    o testreport:
1048      Allow to choose (per experiment) the list of tested output variables
1049       and the main variable (used to issue a pass/FAIL ) ;
1050      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
1051      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
1052      Also modify printing of summary:
1053       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
1054       b) echo the list of tested variables in the individual summary.txt of
1055          each experiment.
1056    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
1057      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
1058      (but still depend on the tile decompostion of the domain).
1059    o pkg/seaice: change a discretization detail to make the B-grid code
1060      "more symmetric". This change is likely to remove all "ridges/leads" that
1061      where quasi-aligned with the grid in B-grid solutions. It may also be
1062      the solution to the stress coupling issues with the B-grid.
1063    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
1064      remove .cvsignore from input dir. (since testreport no longer run here).
1065    o pkg/thsice:
1066     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
1067     - fix reshaping of sea-ice just after advection:
1068       melt all the ice only if ice-volume is too small.
1069     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
1070       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
1071     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
1072    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
1073      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
1074    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
1075      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
1076      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
1077      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
1078      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
1079      -> update output.txt
1080    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
1081     this affects truncation error: -> update output.txt of exp:
1082      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
1083      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
1084    
1085    checkpoint59f
1086    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
1087    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
1088      a bounded range (in forward mode)
1089    o pkg/ecco, ctrl, autodiff and mom_common:
1090     internal parameter controls, completements of implementations
1091    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
1092    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
1093      (not seem any difference in testing results).
1094    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
1095       at face corners.
1096    o pkg/generic_advdiff:
1097     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
1098      loop range indices for computing vertical advection tendency
1099      and do the calculation in the interior only (no overlap) ;
1100      for now, only implemented for SOM advection (to save CPU time).
1101     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
1102    o exch2 adjoint
1103      First set of changes:
1104      - add exch2 hand-written adjoint templates
1105      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
1106        This will require cleanup in pkg/autodiff/*.F
1107        (changed routines currently kept separate in verif. code/)
1108      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
1109        that used to hide exch2 or cubed-sphere specific code
1110        (commented via 'cph-exch2')
1111    o pkg/seaice
1112      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
1113    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
1114       output of global_ocean.cs32x15.thsice .
1115    
1116    checkpoint59e
1117    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
1118      for B-grid vector (not yet tested) and C-grid vector (<- only used
1119      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
1120    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
1121      (#ifdef ALLOW_SALT_PLUME)
1122    o gather_2d/scatter_2d: removed halo regions
1123    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
1124      scheme and the corresponding test case (under front_relax dir). For now,
1125      only available with Skew-flux form and not yet tested in realistic set-up.
1126      adjoint: store directives updated, but gradient checks deteriorated,
1127      so maybe GM/Redi adjoint is now broken.
1128    o seaice adjoint
1129      * add AREA, HEFF, HSNOW as control variable
1130        (should not change lab_sea results)
1131      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
1132    o pkg/seaice:
1133      * added computation of saltFlux in seaice_growth;
1134        For time being, sea ice salinity is assumed constant
1135        contribution of snow flooding to freshening of sea ice is neglected.
1136        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
1137        defaults to 0.0 in order to maintain backward compatibility.
1138        Typical values for SEAICE_salinity are 4 to 10 g/kg.
1139      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
1140      * added SEAICE_availHeatFrac, which specifies fraction of surface level
1141        heat content used to melt or grow ice
1142      * commented out cap of HICE: it helps keep ice thinner
1143      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
1144      * applied OBCS T/S mask to HEFFM sea ice mask
1145    
1146    checkpoint59d
1147    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
1148     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
1149     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
1150    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
1151     and change default value of parameter "GM_Small_Number";
1152     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
1153       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
1154       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
1155    o pkg/ecco: cost function when applying pkg/smooth to controls
1156    o pkg/ctrl: add forcingPrecond run time parameter
1157    o pkg/seaice:
1158     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
1159     - fix bug in metric terms of u-equation in LSR solver (implicit part),
1160       changes verification/lab_sea
1161     - rearrange implicit part of u-equation in LSR solver to make it easier to
1162       read, understand, and debug. This causes changes at the truncation level.
1163     - fix (serious) bug in the boundary conditions (sign error in the implicit
1164       part) of the LSR solver. Changes all LSR results.
1165     - fixed problem with HSNOW initialization to avoid thick snow when AREA
1166       is initilized with small values - does not change lab_sea results.
1167     - added HsnowFile initialization capability
1168    o pkg/smooth: addition to model/src and pkg/ctrl so allow
1169     initialization of pkg/smooth and application to control vector
1170    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
1171    o dependencies: pkg/profiles requires pkg/cal
1172    o pkg/profiles:
1173     - added option ALLOW_PROFILES_GENERICGRID
1174         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
1175         that interpolation information (grid points and coefficients) is provided
1176         within the netcdf input files.
1177         -> sample matlab scripts can be found in MITgcm_contrib/gael
1178         that allow you to prepare netcdf input files.
1179     - also modified: cleaner include statements, cleaner error print statements,
1180       cleaner stops when error, and more tests of the netcdf input files consistency.
1181    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
1182    o pkg/seaice:
1183     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
1184       requires a new routine: seaice_diagnostics_fill.F
1185     - make sure that seaice does not move if not forced (pressure replacement
1186       method, Hibler and Ip, 1995), changes results
1187     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
1188     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
1189       It is turned off by default (=-1.), because it changes the results.
1190     - make it possible to read AREA from a file, too.
1191    
1192    checkpoint59c
1193    o add S/R and diagnostics for oceanic mixed-layer depth
1194    o move GMRedi call after all vertical mixing schemes (including KPP)
1195    o pkg/thsice:
1196     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
1197      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
1198    o pkg/obcs:
1199     - bug fix for balance code
1200    o pkg/seaice:
1201      - allow values of SEAICE_elasticParm > 1
1202      - add new parameter SEAICE_evpTauRelax as an alternative
1203        to SEAICE_elasticParm
1204      - make lsr boundary conditions free slip (by default), changes result
1205      - add code for no slip boundary conditions for lsr
1206      - set minimum of zeta to zero (and not 4e8) (changes results)
1207      - add a cap on AREA after advecting AREA if seaice_growth is not called
1208    o change calculation of Visbeck K:
1209      - no longer depend on tapering scheme; instead, compute slope (limited
1210        by GM_maxSlope). this is equivalent to what was comuted before with
1211        clipping or linear tappering.
1212      - fix vertical averaging (wrong by 1/2 level)
1213      - leave the old version (but will not be maintained) within
1214        #ifdef OLD_VISBECK_CALC / #endif
1215      - update output of exp. ideal_2D_oce
1216    o change error catch in calc_r_star to improve vectorization
1217    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
1218      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
1219    o adjoint:
1220      Re-organized adjoint checkpointing according to Matt Mazloff
1221      (but with modifs/completions/cleanups)
1222      Storing is now bundled into large arrays to optimized I/O
1223      (and second step in cleanup of the_main_loop)
1224    
1225    checkpoint59b
1226    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
1227      - export/import (between ocean & coupler) fields needed for ocean DIC.
1228    o pkg/seaice:
1229      - get rid of three more exchanges seaice_calc_viscosities (required
1230        different loop boundaries in seaice_lsr and seaice_ocean_stress)
1231      - bug fix in seaice_ocean_stress (update of lab_sea required)
1232      - reduce loop boundaries to necessary minimum also in seaice_evp
1233      - go back to the old way of computing deltaC/Z as the adjoint likes that
1234        better
1235    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
1236      passive tracer to an Age Tracer) + update output.txt
1237    o pkg/exf:
1238      - implement A-grid / C-grid selection for wind-stress input files.
1239      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
1240      for now, in exf_bulk_largeyeager04.F only :
1241      - change implementation for case where windspeed + 2. components wind-stress
1242        are read-in. AND use rhoConstFresh to convert evap.
1243    o pkg/seaice:
1244      - use correct EXCH_UV for wind-forcing (on A-grid).
1245      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
1246        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
1247    o pkg/exf:
1248      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
1249      EXF_INTERPOLATION:
1250      - merge global_with_exf/code version of exf_interp_read.F
1251        to the main code ;
1252      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
1253        reading the file ; Important: This options needs to be defined to recover
1254        previous code.
1255        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
1256      - no longer loose real*8 precision along the way when using exf_iprec=64.
1257    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
1258      - change discretisation of evp-solver in order to avoid another exchange
1259        (changes lab_sea) and clean up a little
1260      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
1261        help the adjoint (this also changes the results slightly)
1262      - add a few "_d 0" where they had been missing in seaice_evp.F
1263      - cleaning up: remove unused seaice_calc_rhs.F
1264    o pkg/exf: some cleaning-up:
1265      - change various "constants" into runtime parameters
1266      - cleaned-up Large&Yeager04 routine which should eventually
1267        replace exf_bulkformulae.F (changed names of S/R and CPP)
1268        and merged various ALLOW_ATM_WIND options
1269     only used with thsice pkg (in thsice_get_exf.F):
1270      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
1271        which are used when useStabilityFct_overIce=TRUE (= the default)
1272      - change default values of ice & snow emissivity and scale downward LW
1273        by ice & snow emissivity.
1274    o pkg/thsice:
1275     fix few little problems, in thsice_calc_thickn.F:
1276      - growth vertically (and not laterally) if iceFrac == iceMaskMax
1277      - melt only laterally if hIce < hThinIce (as the comments say)
1278      and in thsice_extend.F:
1279      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
1280      - start to form ice as soon as the minimum ice-volume is reachable.
1281     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
1282      and cpl_aim+ocn
1283    o pkg/kpp
1284     - move computation of surface related input fields to KPP into a new
1285       subroutine kpp_forcing_surf.F
1286     - remove wrong (within bi,bj loops) EXCH calls.
1287     - little cleaning (add argument myThid in last position, cvs header ...)
1288     - for now, fix conservation problem by exchanging KPPviscAz (may not
1289       be the best fix)
1290    o pkg/seaice
1291     - check for inconsistent evp parameter/cpp-flag combination
1292     - remove leftover errIO flat for obsolete name list error handling
1293    o OpenAD
1294     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
1295    
1296    checkpoint59a
1297    o pkg/seaice: some parameter clarifications and a little bit of clean up
1298    o pkg/thsice: rename run-time parameters:
1299       himin       -> hIceMin
1300       himin0      -> hThinIce
1301       hihig       -> hThickIce
1302       i0          -> i0swFrac
1303       transCoef   -> bMeltCoef
1304       frac_energy -> fracMelting
1305      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
1306       with default values (for now) that do not change the results.
1307      remove old version of thsice vars advection in pkg/seaice.
1308    o in FFIELDS.h:
1309      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
1310      - make pLoad & sIceLoad always available (but still only used if
1311         ATMOSPHERIC_LOADING is #define).
1312    o pkg/kpp: replaced _KPP_RL with _RL
1313    o bug fixes for vertical diffusivity computations when both KPP and
1314        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
1315        are no longer updating the vertical diffusivity array
1316        (passed as argument) but are (re-) setting those arrays.
1317    o pkg/seaice: fix bug in evp solver, while doing that
1318      - change (improve?) discretization of stress computations for both
1319        cgrid-lsr and evp solver
1320      - add a new routine to compute strain rates
1321      - the above changes lab_sea results
1322      - add no slip conditions for evp solver (off by default), lsr-version
1323        may follow
1324      - fix exchange for shear at Z-points (does not change lab_sea)
1325      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
1326        (to force the user to pick a time step since there is not "safe" way
1327        of choosing it)
1328      - add principal stress diagnostics
1329      - rearrange fields for evp a little to avoid having to call a: too many
1330        exchanges and b: exchanges for stress trensor components which we do
1331        not have.
1332      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
1333        of evp, complete rewrite for lsr case (latter is does not yet work
1334        in all cases)
1335    o pkg/kpp: add code to have mixing in shelf ice caverns
1336      - add myThid to all kpp routines (long overdue)
1337    
1338    checkpoint59
1339    o pkg/exf:
1340      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
1341        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
1342      - move exf header files from lower_case.h to UPPER_CASE.h ;
1343        add missing cvs Header & Name
1344      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
1345      - add namelist param. selectStressGridPosition, exf_monFreq
1346      - retire many _CLIM routines, and remove data.exf_clim
1347        + params moved to data.exf
1348        + climsst, climsss now handled by exf_set_gen, i.e.
1349          climss?period=0 refers to constant field,
1350          climss?period=-12 to monthly forcing
1351      - split up namelists in data.exf
1352    o pkg/seaice:
1353      - remove seaice_exch and seaice_exch_uv
1354      - remove superfluous exchange of theta
1355      - add myThid to seaice_budget_ocean/ice
1356      - add new interface for atmospheric wind forcing (C-grid only)
1357        + new routine
1358        + two new field (taux, tauy for stress over ice)
1359        + removed one global field (DAIRN) for C-grid case only
1360    o pkg/thsise
1361      - 2nd set of modifs for thsice adjoint in conjunction with exf
1362    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
1363    
1364    checkpoint58y_post
1365    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
1366      vertical diffusivity, similar to that in MOM4; turned on using
1367      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
1368      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
1369    o Added capability for 3D specification of background vertical diffusion
1370      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
1371      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
1372      "data" file that contains the 3D vertical diffusivity coefficients.
1373    o ice dynamics (pkg/seaice) with thsice thermodynamics:
1374      - add code within pkg thsice to advect & diffuse sea-ice fields
1375      similar to (and will replace) what has been added in  seaice_advdiff.F,
1376      but: - conserving Mass, Heat & Salt.
1377           - better when using non-linear advection scheme (not yet fully tested)
1378           - can also be used in atmospheric set-up (for now, only the diffusion).
1379    
1380    checkpoint58x_post
1381    o IO option for global-file compact format:
1382      - add options when generating topology (utils/exch2/matlab-topology-generator)
1383      - add I/O capability (pkg/mdsio).
1384      - adapt utils/matlab/rdmds.m to read this format.
1385      for now long-line format not yet supported by pkg/mdsio (& exch2).
1386    o shelfice: add a few diagnostics
1387    
1388    checkpoint58w_post
1389    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
1390      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
1391      (and replace horiVertRatio in NH code).
1392      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
1393                         and tutorial_plume_on_slope (sensitive to truncation)
1394    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
1395      directly to drive seaice model (C-grid only)
1396    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
1397     - reintroduce computation of wind from stress,
1398     - compute tau (in exf_bulkformulae.F) from windstress averaged to
1399       mass points to avoid tau = 0
1400     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
1401    o rdmnc.m: make it work with "global" files created with gluemnc
1402    o rdmnc.m : some improvements in dealing with singleton dimension
1403      (tested on all testreport mnc output files).
1404    o genmake2: disable pkg/profiles if netcdf test fails.
1405    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
1406    o move call to cal_readparms up to make calendar parameters/variable available
1407      to all packages
1408    
1409    checkpoint58v_post
1410    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
1411      useDynP_inEos_Zc tested.
1412    o pkg/exf: changes to properly interpolate/mask/scale initial fields
1413    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
1414      and portions thereof.  See read_cs.txt for description and examples.
1415    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
1416      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
1417      following the great-circle arc between those 2 points.
1418    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
1419      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
1420    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
1421     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
1422     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
1423     - still needs work (not working with some options ; efficiency to improve)
1424       and serious testing.
1425     - use this scheme for temperature & salinity in 2 advection test exp.:
1426       advect_xy & advect_xz, respectively.
1427    
1428    checkpoint58u_post
1429    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
1430    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
1431    o testreport: add option "-skipdir" to skip some test.
1432    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
1433      momentum calculation.
1434    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
1435    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
1436      remove checkpoint.F and the_correction_step.F (no longer used);
1437      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
1438    o add option (linFSConserveTr) to correct for tracer source/sink due to
1439      Linear Free surface
1440    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
1441    o pkg/thsice: fix reading mnc-pickups
1442    
1443    checkpoint58t_post
1444    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
1445    o pkg/mdsio:
1446     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
1447       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
1448       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
1449     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
1450     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
1451       either MDS_READ_FIELD or MDS_WRITE_FIELD )
1452     - new S/R (to replace MDSWRITEMETA), which allows to write more
1453       informations (variable names, time ...) to meta files.
1454     - modify rdmds.m to give back the meta file content.
1455    o pkg/diagnostics: change vertical interpolation to be safer, and more
1456       flexible (define p-levels to interpolate to in data.diagnostics);
1457      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
1458       diagnostic pointer.
1459    o pkg/seaice: more cleaning up of seaice_growth, added many comments
1460    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
1461    o fix multi-category seaice:
1462     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
1463       SEAICE_MULTICATEGORY
1464     - fix short wave heat flux
1465    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
1466       and allow to use EVP solver. Change forward lab_sea: test both EVP
1467       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
1468    o Initial check-in of lab_sea adjoint
1469      (very similar to natl_box_adjoint/code_seaice)
1470      * used C-grid and EVP solver
1471      * used KPP, GM/Redi
1472      * uses inAdExact=.TRUE.
1473      * gradient checks fail for both ADM and TLM
1474        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
1475        f.d. gradients actually seem more problematic than ADM, TLM gradients;
1476        issue is related to forward mismatch between g77 an ifort
1477    o pkg/seaice: overhaul of thermodynamics
1478     - growth.F and groatb.F are replaced by new routine seaice_growth.F
1479     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
1480     - move a few global fields out of SEAICE.h into seaice_growth.F and
1481       make them 2D (FICE/QNETO/ ...)
1482     - remove FO (it is the same as QNETO)
1483     - introduce a few local fields to avoid modifying external fields such
1484       as atemp, etc.
1485    
1486    checkpoint58s_post
1487    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
1488      changed exf_set_gen.F so that
1489        genperiod=0 means input file is one time-constant field and
1490        genperiod=-12 means input file contains 12 monthly means
1491    o CG2D: use pre-computed solver main-diagonal (stored in common block);
1492      this affects truncation error ; generate new output file for exp. which
1493      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
1494        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
1495        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
1496        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
1497        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
1498        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
1499    o start implementation of deep-atmosphere and anelastic formulation
1500    o verification: remove 2nd copy of input files and use script "prepare_run"
1501      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
1502    o mom_common/vecinv/fluxform: fix a few initialisation isssues
1503    o profiles: fix for multithreaded case
1504    
1505    o diagnostics: rename few diags:
1506      s/'PRESSURE'/'RCENTER '/g
1507      s/'TICE    '/'oceFreez'/g
1508      s/'TAUX    '/'oceTAUX '/g
1509      s/'TAUY    '/'oceTAUY '/g
1510      s/'SWFLUX  '/'oceQsw  '/g
1511      s/DIFx/DFxE/g
1512      s/DIFy/DFyE/g
1513      and add few ocean-forcing diagnostics:
1514      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
1515    o modifications to pkg/seaice/growth.F and budget.F, which change results of
1516      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
1517      as actual snow thickness.  It now refers everywhere to effective snow
1518      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
1519    
1520    checkpoint58r_post
1521    o modifications to pkg/seaice/growth.F, which change results of
1522      lab_sea experiment: fixes pertain to melting snow over open water, to
1523      masking EVAP under sea ice, and to using the correct AREA variable for
1524      computations of EVAP, PRECIP, HSNOW, and GHEFF
1525    o add ability to read bathy, salt, and theta using MNC (off by def)
1526    o add flooding algorithm and advection of HSNOW for pkg/seaice;
1527      both are turned off by default and do no change any results
1528    o seaice advection with pkg/thsice: a step toward the use of non-linear
1529      advection scheme, but #ifdef or commented out for now (requires more EXCH).
1530    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
1531      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
1532      in natl_box (affects results @ truncation level: update output.txt)
1533    o multi-threading and IO:
1534      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
1535      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
1536        (needed to work with SingleCpuIO): tested in all verif. exp.
1537    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
1538      affects the results (but none of the verification test uses this scheme).
1539    o Adding some pkg/diagnostics capability to pkg/seaice
1540      (will certainly be subject to changes)
1541    o ctrl: adding new control variables:
1542      lwflux, lwdown, evap, snowprecip, apressure, runoff
1543    
1544    checkpoint58q_post
1545    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
1546      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
1547      high_res_cube configuration by 4% on Columbia.
1548    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
1549      add (in global_with_exf/code) a version of EXF_INTERP_READ without
1550      dynamical allocation (seems to work in multi-threaded).
1551    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
1552      single CPU io) so that TAF does not have to see EESUPPORT.h
1553    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
1554    
1555    checkpoint58p_post
1556    o obcs: stop if obcs is used with useCDscheme = .true.
1557    o shelfice:
1558     - fix a sign error so that no slip at shelfice interface works
1559     - remove stop for combination non-hydrostatic code and shelfice. That does
1560       not mean, that the results are correct, but at least they are numerically
1561       stable
1562    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
1563    o added adjoint exch routined for all exch*3d* routines
1564      and updated flow directives
1565    
1566    checkpoint58o_post
1567    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
1568      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
1569    o change controling S/R for writing pickup file (new S/R do_write_pickup)
1570      and clean-up reading/writing of pickup files.
1571    o fix local version of read/write pickup (NH part) in rotating_tank/code
1572    o simplify EXCH interface:
1573     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
1574     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
1575    o added the regrid package
1576    o shelfice:
1577     - add a simple boundary layer scheme to reduce noise
1578     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
1579    
1580    checkpoint58n_post
1581    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
1582       local variable (not in common block).
1583    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
1584      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
1585      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
1586        to work with SingleCpuIO.
1587    o add "_d 0" to real constant of pkg/cfc subroutines ;
1588       update exp. cfc_exemple & tutorial_cfc_offline output files.
1589    o multi-threading and IO:
1590      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
1591        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
1592      - barrier before and after reading.
1593      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
1594      - avoid using MDS_WRITELOCAL for LAND pkg output.
1595      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
1596        common-block variables ; Allows multi-threading with master-thread IO.
1597    o change default MAX_NO_THREADS from 32 to 4 ;
1598      and stop cleanly when MAX_NO_THREADS is too small.
1599    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
1600    
1601    checkpoint58m_post
1602    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1603       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1604    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1605       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1606       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1607    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1608        add MITgcm_tutorials (= code + all the tutorials)
1609    o ecco, option to compute cost for total ssh (mean+anom)
1610    o consistent with addition of ptracer and ssh in pkg/profiles
1611    o profiles: adding ptracer and ssh
1612    o testreport: change multi-test output-file name
1613      (from output.txt.{name} to output.{name}.txt)
1614    o profiles: now ok for mutli-tiles case
1615    o seaice: add 4 parameters for different advection schemes for area,
1616      (effective) seaice thickness, enthalphy, and snow height. Their default
1617      is the standard parameter SEAICEadvScheme
1618    o calc_gw:
1619     - add cosFacU in zonal viscous flux (harmonic.visc.).
1620     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1621       of tutorial_plume_on_slope.
1622    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1623    o calc_gw: true flux-form, account for horizontal grid spacing.
1624      update rotating_tank results, but not plume_on_slope (affected at
1625      truncation level, 11 digits).
1626    
1627    checkpoint58l_post
1628    o calc_gw:
1629     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1630     - remove side-drag for now (need to fix it); update plume_on_slope results.
1631     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1632    o commit code to make SST/SSS weights spatially variable
1633      (based on either variable in-situ or variable initial T/S weights)
1634    o pkg/ecco:
1635      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1636        now based on horizontally varying weights wthetaLev, wsaltLev
1637      * cost_averagesflags now returns year indices in addition to day, month
1638      * sflux balance is performed on annual basis
1639        (sflxumm, sfluxmm2, bal_sfluxmm)
1640      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1641        including separate counting and multipliers
1642    o pkg/rbcs
1643      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1644    
1645    checkpoint58k_post
1646    o testreport:
1647     - always build in dir. "build" (if not there, mkdir build instead of building
1648       & running in input)
1649     - run in dir run (if it exists), in build otherwise.
1650     - call prepare_run (if input/prepare_run exists)
1651     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1652    o pkg/exf modifications to interpolation and rotation routines for more
1653       reasonable treatment of North Pole singularity: for tracers North Pole
1654       value is set to northernmost zonal-mean value, for zonal velocity it is
1655       set to zero, and for meridional velocity it is set to northernmost value.
1656    o pkg/exf/exf_check_range.F
1657     - add tile index to diagnostics and move stop statement to the very
1658       end of the routine.
1659    o pkg/diagnostics: (diagnostics_main_init.F)
1660      define title of isomorphic variables according to the current config.
1661    o pkg/thsice with pkg/seaice dynamics:
1662    - fix domain of computation (interior only, required for exf) and do exchanges
1663    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1664    o towards a standard way of dealing with multi-threading in MONITOR
1665      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1666    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1667       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1668    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1669    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1670    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1671       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1672    o tracer advection:
1673     - clean-up and simplify calc_common_factors.F
1674     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1675       advection subroutine (but still not used within DST advection S/R)
1676    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1677    
1678    checkpoint58j_post
1679    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1680      from file (collects calls previously in FORWARD_STEP)
1681    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1682    o adjoint store dir. adjusted accordingly
1683    o genmake2
1684      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1685    
1686    checkpoint58i_post
1687    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1688      on wind stress (SEAICEstressFactor defaults to 1.)
1689    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1690      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1691    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1692      on CS-grid: no longer loosing mass.
1693    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1694    o pkg/ggl90: fix sloppy output and fix a bug
1695    o pkg/seaice: added SEAICEuseEVPpickup parameter
1696      - Set to false in order to start EVP solver with
1697        non-EVP pickup files when using SEAICEuseEVP
1698      - fix sign error in diffusion in seaice_calc_rhs
1699    
1700    checkpoint58h_post
1701    * Modifications for bottom topography control
1702      o replace hFacC by _hFacC at various places
1703      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1704      o add non-self-adjoint cg2d_nsa
1705      o update autodiff support routines
1706      o re-initialise hfac after ctrl_depth_ini
1707      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1708    * Adding verification for 5x5 box (4-layer) bottom topography control
1709    
1710    checkpoint58g_post
1711    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1712       used for mean seasonal cycle, mean diurnal cycle); add an example
1713       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1714    o pkg/ggl90:
1715      - add parameter (minimum surface kinetic energy)
1716      - fix bug (avoiding division by zero)
1717    o couple pkg/thsice to pkg/seaice:
1718      - modify advection in seaice to accomodate new scalar fields to be advected
1719      - only muliDimAdection scheme work with seaice/thsice
1720      - mapping of thsice-variables to seaice-variables, back and forth
1721      - does not break the verification experiments, but does not give the
1722        desired results either
1723    o pkg/seaice
1724      - make (default) second order advection a bit less confusing?
1725    
1726    checkpoint58f_post
1727    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1728      to pkg/seaice):
1729      - new routines thsice_map_exf and thsice_get_exf provide the interface
1730      - add an additional formal parameter to thsice_solve4temp
1731    o pkg/exf:
1732      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1733      - correct Stefan-Boltzmann constant
1734      - new parameter for longwave surface emittance
1735      - separate some stuff from exf_bulkformulae into new routines  
1736        exf_radiation, exf_wind
1737      - add new parameters and constants: longwave emissivity for ocean, ice
1738        and snow, evaporation parameters over ice
1739      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1740        either wind from stress or stress from wind
1741    o pkg/thSIce:
1742    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1743    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1744       and THSICE_CALC_THICKN
1745    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1746    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1747      to make debugging easier.
1748    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1749    o pkg/bulk_force:
1750      - clean-up comments and parameters ;
1751      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1752    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1753      generate new output for test-experiment: aim.5l_cs.thSI
1754    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1755      testreport accordingly
1756    
1757    checkpoint58e_post
1758    o SEAICE_CGRID adjoint done
1759    o R_STAR adjoint implemented.
1760      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1761      * need to sort out init. of h0facc, etc.
1762    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1763      to be able to use it in pure forward.
1764    
1765    checkpoint58d_post
1766    o upgrade simple test-experiment to tutorial example:
1767     step.1: duplicate the experiment and (step.2) will remove the old copy.
1768      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1769      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1770      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1771      tutorial_global_oce_biogeo    <- copy of dic_example
1772      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1773      tutorial_plume_on_slope       <- copy of plume_on_slope
1774      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1775      tutorial_global_oce_optim     <- empty for now (David ?)
1776      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1777     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1778    o correct a sign problem in cost_scat.F
1779    o obcs and ptracers: fix boundary conditions for advections schemes
1780      with larger stencil
1781    o thsice adjoint: start
1782    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1783      completeness
1784    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1785      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1786    o ptracers adjoint:
1787      * avoid extensive recomputatations
1788      * fix missing re-init. of gptr (missed by TAF)
1789    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1790      me to turn off the excessive output to STDOUT that this package produces
1791    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1792      and add those terms in Vector-Invariant formulation.
1793    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1794      if the control period (xx_hfluxperiod etc) is 0
1795    o in profiles pkg, clean routines and fix details
1796    o in ecco pkg, reading ssh data:
1797      fix problem in case the model does not start at iter0=0
1798    o fix mnc-pickup/restart for ptracers
1799    o new package prifiles:
1800      code to compute profile-based cost by Gael Forget
1801      (modifs in ecco, ctrl, autodiff)
1802    o Benign bug fix in initialization (spotted by M. Mazloff) of
1803      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1804    
1805    checkpoint58c_post
1806    o adjoint: finish NLFS adjoint and provide reference output in
1807      verification/global_ocean.90x40x15/results_ad_nlfs
1808    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1809      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1810      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1811      with SEAICE_CGRID defined.
1812    o move calendarDumps from "data" to "data.cal" and clean-up the code
1813      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1814    o add useEXF & useCAL flags (for now, set in hard-coded way)
1815    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1816      (were missing in NH mode, and wrong in quasihydrostatic mode).
1817      waiting for Chris updated version of calc_gw to add those CALLs.
1818    o fix bug in quasihydrostatic S/R ;
1819      add a test for this option: global_ocean.90x40x15.qshyd
1820    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1821      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1822    o add on/off flag useOffLine for package OFFLINE
1823    o seaice:
1824      - modify advection so that it works also on the C-grid
1825      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1826        problem in multi-tile runs with C-grid
1827      - add flags for clipping ice velocities and/or masking solver forcing
1828      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1829        C-grid solver
1830      - added a few comments to seaice_diffusion.F
1831      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1832        are now exclusive)
1833      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1834        required re-ordering the code a little:
1835       + make DAIRN global variable (defined in SEAICE)
1836       + move computation of the viscosities eta and zeta into a new separate
1837         routine (because I need to recompute them in seaice_ocean_stress.F)
1838    
1839    checkpoint58b_post
1840    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1841      update output.txt of exp. aim.5l_cs.thSI
1842    o various mnc cleanups and improvements:
1843      + shrink lookup tables by factor of ~4
1844      + better error reporting when running out of lookup space
1845      + able to handle longer path/file names (up to 500 chars)
1846    o adjoint:
1847      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1848      - TBD: "hidden" mom_vecinv recomp. in dynamics
1849    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1850     (allow to differentiate between forcing components using new integer flags:
1851      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1852     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1853    o ecco
1854      - enable trend removal from SSH anomaly obs.
1855    o adjoint
1856      - a fix for PmEpR when #undef EXACT_CONSERV
1857      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1858      - try to fix "hidden" recomp. in forward_step for NLFS
1859        (NLFS seems broken sometimes after I checked it in)
1860    o seaice:
1861     - add c-grid version of the dynamic solver:
1862       + three new routines that are the c-grid substitute lsr, dynsolver
1863         and ostres
1864       + put a few fields that were local to dynsolver into global common
1865         blocks, so that I can move the computation of stresses etc into
1866         seaice_lsr (saves coding but may break the adjoint).
1867     - replace more hardwired parameters by runtime parameters
1868     - add ice masks that mask the rhs of the implicit solvers where there
1869       is no ice (commented out in seaice_dynsolver, because i am not sure
1870       if this works properly), eventually this should replace the clipping
1871       of ice velocities in seaice_dynsolver to +/-40cm/s.
1872    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1873      include it only where its needed
1874    o move balancing of fluxes before the call of external_forcing_surf
1875    o seaice:
1876      - correct units of turning angles (now they are really in degrees)
1877      - move computation of GWATX/Y out of main routine into dynsolver
1878      - initialize GWATX/Y in seaice_init
1879    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1880      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1881    o seaice: add runtime flags for turning angles (default to zero)
1882    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1883      and trend from exf forcing and ctrl control adjustments
1884    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1885      (since checkpoint57x_post)
1886    o change the default rotation period to 86164.s = the Earth rotation
1887    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1888      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1889    o seaice advection: add code for choosing between the default (2nd order
1890      central differences) and multiDim advection schemes provided by
1891      pkg/generic_advdiff
1892    o seaice:
1893      - removed all references to SEAICE_GRID.h fields from
1894        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1895        (cubed-sphere configuration will change a little)
1896      - grid computations in seaice_init are obsolete now.
1897      - cleaned up code a little so that is easier to read (hopefully).
1898      - added new (better?) discretizations of default advection and diffusion
1899        (turn on with SEAICEuseFluxForm)
1900      - replace 1 in 3d global fields by kSurface in growth.F
1901      
1902    checkpoint58a_post
1903    o seaice:
1904      - bug fix in advect.F
1905    o shelfice:
1906      - separate shelfice load anomaly from pload (breaks with time
1907        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1908        Its default is 0., but it may be computed more cleverly from (unknown)
1909        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1910        done offline. A good approximation of the pressure load anomaly is
1911        necessary to avoid large initial adjustment processes underneath
1912        deep-reaching shelfice.
1913      - small fix in ISOMIP shelfice_thermodynamics
1914      - add more sophisticated thermodynamics of Hellmer (1989), this is
1915        now the default
1916      - give a few constants more intuitive names
1917    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1918      if bulk formulae are used in long integration (especially EmPmR). Turn
1919      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1920      if balancePrintMean, the imbalance that is substracted is printed to
1921      STDOUT.
1922    o fix bug (typo) in obcs_apply_eta.F
1923    o add a new package shelfice which enables us to model the circulation
1924      underneath shelf-ice with draughts of hundreds of meters.
1925     - works
1926     - to do: + include improved thermodynamics
1927              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1928                instead of new field kTopC
1929              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1930                instead of new field R_shelfIce and new code in ini_depth.F
1931                and ini_mask_etc.F?
1932              + adjust vertical mixing schemes?
1933    o seaice pkg:
1934     - add a cpp-flag to include a simple formula for a salinity dependent
1935       freezing point of sea water at the surface
1936     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1937       meridional stresses are now different (and hopefully correct)
1938    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1939       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1940       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1941    o pkg/diagnostics: add options and parameters for regional-statistics
1942       diagnostics ; define regions by reading a region-mask from a file
1943       (might add other options later)
1944    o pkg/bulk_force:
1945     - add option and parameters to use AIM surface-flux formulae.
1946     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1947       others forcing fields (defined in PARM05, parameter file "data") are loaded
1948       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1949     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1950     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1951     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1952       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1953     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1954    
1955    checkpoint58
1956    o add "--embed-source" option to genmake2 which, when the supporting
1957      tools can be compiled (as determined by genmake2) will turn on the
1958      embed_files package which then embeds the entire MITgcm source code
1959      (*.[fFhc] + Makefile) used for the build within the executable
1960      - requested by CNH but off by default
1961      - adds a paltry <9MB to the mitgcmuv executable in most cases
1962      - only writes the output when useEMBEDSRC in eedata is true
1963    o clean up 3-dim. relaxation codes:
1964      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1965      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1966      * Thanks to Tom Haine for testing!
1967    
1968    checkpoint57z_post
1969    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1970      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1971    o fix the pickup behavior for obcs in combination with ptracers
1972    o fix a bug in ptracers_external_fields_load
1973    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1974      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1975    o transfered surface NH pressure to eta field (if exactConserv).
1976    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1977         and update lab_sea output.txt file.
1978    o completing 3-dim. relaxation code: additional term
1979         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1980      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1981      * At compile time, in "EXF_OPTIONS.h" set
1982          #define  ALLOW_CLIMTEMP_RELAXATION
1983          #define  ALLOW_CLIMSALT_RELAXATION
1984      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1985          tauThetaClimRelax3Dim = 15552000.0,
1986          tauSaltClimRelax3Dim  = 15552000.0,
1987      * 3 cases:
1988          1) Use a constant-in-time 3-dim. field
1989          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1990          3) Real-time relax. to time-evolving prescribed field
1991    o Adding Laplacian-type smoothness constraint on
1992      initial and boundary (forcing) controls (ic, bc)
1993      * enable at compile-time via
1994        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1995      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1996      * Absolute scale somewhat unclear so far
1997      * no area weighting was included since no other cost term does so far
1998    
1999    checkpoint57y_post
2000    First step for a NLFS adjoint
2001    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
2002    o new init. routines for calc_r_star, calc_surf_dr
2003    o still need to deal with ini_masks_etc
2004    o testreport seemed happy
2005    checkpoint57y_pre
2006    
2007    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
2008    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
2009    o add new offset feature to offline pkg (plus minor cleanup)
2010    o cfc fixes for final year of integration
2011    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
2012      be in GCHEM_OPTIONS).
2013    
2014    checkpoint57x_post
2015    o fix testreport Pb in multiple test experiment.
2016    o cleanup our namelist syntax in verification:
2017      - make it more F95 standards compliant (some work still needed)
2018      - allows the vast majority of our tests to work with gfortran
2019    o Non-Hydrostatic:
2020     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
2021     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
2022    o Allow to apply AB on T,S rather than on AB(gT,gS):
2023     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
2024     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
2025       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
2026     - need a "clever" read_pickup to restart from the other AB formulation
2027    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
2028    o remove some unused variables (reduces number of compiler warnings)
2029    o adjoint
2030      * Disable useVariableViscosity for adjoint for time being
2031        (there are a number of extensive recomputations)
2032      * Initialize certain variables needed for adjoint
2033    
2034    checkpoint57w_post
2035    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
2036                 fix the singleCpuIO RS version of MDSWRITEFIELD
2037       and add a WARNING if using globalFiles=T with multi-processors.
2038    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
2039      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
2040    o tracer advection scheme:
2041      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
2042       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
2043       was not very convenient).
2044      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
2045       (further tests needed for the implicit DST & Flux-Limiter schemes).
2046    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
2047      and sRef for convenience, handy, when you want to initialize
2048      ptracers in a large domain with a constant non-zero value. Also,
2049      untangle ptracers_init.F a little.
2050    
2051    checkpoint57v_post
2052    o change dome exp. to use variable viscosity in side-drag terms.
2053    o remove all the files from the cfc_offline test since they are now
2054      incorporated into tutorial_cfc_offline which has been producing
2055      identical results for a few days of testing
2056    o add new parameter: sideDragFactor to enable half-slip-side BC
2057      and change side-drag S/R to use viscosity from mom_calc_visc
2058      (can switch back by setting sideDragFactor=0.); affects results at
2059      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
2060       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
2061    o vorticity & strain are now computed without masking, to account for
2062      no-slip-side BC in variable viscosity calculation ; mask is applied
2063      anyway later on, before computing advection/coriolis terms.
2064    o modify exp4 to test new obcs support for reading from external files
2065      and for passive tracers
2066    o fix behavior of ptracers_monitor when monitor output is written to a
2067      netcdf-file; still not independent of monitor.F (writes in the same
2068      file).
2069    o change default value of tRef (put a uniform, meaningful value for ocean
2070      & atmos) and initialize sRef (was missing, as Martin mentioned).
2071    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
2072      to be proportional to enstrophy dissipation length.  Thus,
2073       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
2074      This is now consistent with Smagorinsky and with the manual.
2075    
2076    checkpoint57u_post
2077    o OBCS and PTRACERS: add open boundary support for passive tracers
2078      - either use homogenous (pseudo) v.Neumann conditions or prescribe
2079        OB-values from file; this is not different from the way theta and salinity
2080        are treated
2081      - however, Orlanski-radiation conditions are not supported, and the model
2082        will stop if you use pTracers and Orlanski at the same time.
2083      - beefed up the rountine obcs_external_fields_load: now only those open
2084        boundary values are overwritten with values from files for which there
2085        are really files, otherwise the OB-fields remain untouched. This makes
2086        it possible to use different OBs at different ends of the domain (as
2087        with EXF)
2088    o reduce number of exch calls in shap_filt (s2).
2089    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
2090      truncation level) 4/5 MLAdjust test results (11&12 digits match).
2091    
2092    checkpoint57t_post
2093    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
2094    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
2095      same truncation, independent of the face number: affects affects several
2096      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
2097    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
2098      note that biharmonic viscosity + no-slip was not tested in any experiment.
2099    o fix bug in non-linear free-surf side-drag ; generate new output for
2100      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
2101    o make mnc honor the writeBinaryPrec flag for most kinds of output
2102    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
2103    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
2104      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
2105    o add brackets in multi-terms sum to get same truncation, independent of
2106      the face number (manage to get exactly same value of gU,gV at the cs-edge)
2107      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
2108    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
2109      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
2110      a maximum grid-scale Reynolds number.  Also, changes all length calculations
2111      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
2112      Suggested values of viscosity parameters found in mom_calc_visc.
2113      Many new viscosity diagnostics available.
2114    
2115    checkpoint57s_post
2116    o Add clearing-house for viscosity calculations, mom_calc_visc and
2117      correct numerous bugs in LeithD and Smagorinsky discretizations.  
2118      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
2119      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
2120      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
2121      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
2122      The Strain-Tension form is now called with useStrainTensonVisc=.true.
2123      ViscAhStrain and viscAhTension are now retired.
2124    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
2125    o In response to JMC's bug report, genmake2 now ignores any soft-links
2126      that it finds in the *current* directory when searching for files.
2127      Soft-links found in any other source directories will still work as
2128      they did before.
2129    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
2130      a C routine to unlimit the stack size
2131    o mnc-ify pkg/aim snapshot vars
2132    o mnc-ify pkg/land as requested by Daniel
2133    o various changes to mnc including:
2134      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
2135      - output can now be grouped so that all files within a group
2136          change the ITER portion of their names in lock-step together
2137      - can now read ("global") PER-FACE (in addition to PER-TILE) files
2138          and works with both EXCH1 and EXCH2 (but needs more testing)
2139      - writing works for all verification test cases w/ g77 on Linux
2140    
2141    checkpoint57r_post
2142    o make MNC variable initialization happen earlier
2143    o add diagnostics for (almost) each term of the momentum Eq.
2144    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
2145    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
2146    o remove MINIMAL_TAVE_OUTPUT option ;
2147      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
2148    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
2149      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
2150    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
2151    o add time-dependent SST, SSS control
2152    o cost terms in ecco/ modularized (new cost_generic.F)
2153    o cost_averages routines are modularized (new cost_averagesgeneric.F)
2154    o new infrastructure for seaice model vs. obs misfits in seaice/
2155      * driver from the_main_loop.F is seaice_cost_driver.F
2156      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
2157      * gradient check in Exp. 6a of natl_box_adjoint/
2158    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
2159      (see README file)
2160    
2161    checkpoint57q_post
2162    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
2163    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
2164      - bug was reported by Jean-Michel and Ian Fenty
2165    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
2166      update exp. cpl_aim+ocn output.
2167    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
2168      Needed for high-res. runs with large global files
2169      to be able to limit tapelev size
2170    o Changed some tests for adjoint:
2171      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
2172      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
2173      * global_ocean.90x40x15/ back to default 3-level checkpointing
2174    o Modifications to enable scripted COMMON to MODULE conversion
2175      * verification/OpenAD/code/ has necessary scripts and description;
2176      * converts, compiles and runs successfully;
2177    
2178    checkpoint57p_post
2179    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
2180    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
2181      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
2182    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
2183    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
2184      (was already the case for dissipation with mom_vecinv,
2185       and also the case for grad.PhiHyd when staggered-timeStep)
2186      This will allow to put dissipation out-off the AB time-stepping.
2187     Unfortunately, affects truncation error. Update output of exp. that "fails"
2188      (cg2d matching number) and leave the others for later: front_relax(10),
2189      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
2190      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
2191    
2192    checkpoint57o_post
2193    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
2194      (2) its ready to be documented during the 20050801 DocFest
2195    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
2196      for ideal_2D_oce and lab_sea on linux_ia32_g77
2197    o set to #undef CTRL_SET_OLD_MAXCVARS_30
2198      in global1x1_tot/code_seaice_adj to access indices 32, 33
2199      (worth another tag)
2200    
2201    checkpoint57n_post
2202    o adding precip control xx_precip 32
2203    o adding swflux control xx_swflux 33
2204    o Replacing 10 forcing penalty cost routines by 1 generic.
2205    o Implementing partitioning in time-mean and variable adjustment
2206      for atmos. state.
2207    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
2208    o in natl_box_adjoint:
2209      * updated exp 1 to 10
2210        (but does not have time-mean vs. variable split results yet)
2211    o updated global1x1/*_seaice_adj/
2212      to incorporate latest changes
2213    o enable useSingleCpuIO for mdsio vector routines
2214      (applies in particular to tapelev I/O)
2215    o removed inefficient K-loop in all active_file*control*.F
2216    
2217    checkpoint57m_post
2218    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
2219      and advect_cs (use EXCH-2 and standard cs-32 grid files).
2220    o pkg/exch2: filling of face-corner halo regions is optional
2221      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
2222    
2223    checkpoint57l_post
2224     tag before updating tutorials (pre-release-2)
2225    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
2226       for output and interpolation of input fields onto model grid)
2227    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
2228       Affects results of exp. rotating_tank ; update output.txt.
2229    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
2230          and taking the square quantity and/or using a fraction-weight field.
2231    o fix aim_diagnostics_init.F mate numbers.
2232    o add mnc output capability to diagnostics/diagstat and update
2233      our cvsignore files for the ACSII output generated
2234    
2235    checkpoint57k_post
2236    o lab_sea now uses diagnostics package and provides a suite of
2237      new EXF diagnostics output.
2238    
2239    checkpoint57j_post
2240    o exf
2241      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
2242        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
2243        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
2244      * extended diagnostics output
2245        - now includes all EXF variables
2246        - hs, hl moved to common block
2247        - separate S/R for diagnostics, called after ctrl vector is added
2248        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
2249        - EXFqnet contains true Qnet (i.e. includes qsw)
2250      * updated verif. lab_sea, global_with_exf
2251      * Rearranging hflux (exf_mapfields -> exf_getforcing)
2252        to ensure that diagnostics sees a true EXFqnet
2253    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
2254    o diagnostics pkg: change pointers so that 1 diagnostic can be used
2255      several times with different frequencies.
2256    o mnc-ify the thsice package as requested by Daniel Enderton
2257      - the monitor--MNC output needs work
2258      - many attributes need to be added (most are currently blank)
2259    o mnc-ify theaim_v23 package as requested by Daniel Enderton
2260      - many attributes need to be added (most are currently blank)
2261    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
2262    o add Sadourny like discretization to the 4th.O vorticity advection scheme
2263    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
2264      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
2265         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
2266    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
2267     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
2268    
2269    checkpoint57i_post
2270    o Diagnostics package was changed: diagnostic allocation is now deactivated
2271      by setting an empty file name in the namelist (used to be by setting 0 frequency)
2272    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
2273      add 1rst Order upwind vertical Shear.
2274    o add a quick fix for A/B checkpointing in OFFLINE mode
2275    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
2276      end-run around the C/Fortran linking horror in eesup/src/timers.F
2277    o added pkg/runclock: allows user to terminate run based on wall clock
2278    o added non-hydrostatic scaling parameter: nh_am2
2279    o pkg/my82: futile attempt to make results compiler-independent by adding
2280      some "_d 0", etc. no effect.
2281    o for mnc output, fill the 'T' coordinate var with myTime and create a
2282      separate 'iter' variable for iteration count
2283    o pkg/diagnostics:
2284      add new capability: output of Global/Regional & per-level statistics ;
2285      tested against monitor output (including land & thSIce) on various exp.
2286    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
2287    
2288    checkpoint57h_done
2289      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
2290      data.diagnostics, data.gchem, data.ptracers) is done.
2291    
2292    o pkg/diagnostics: prepare for Global/Regional statistics.
2293      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
2294    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
2295      and rename it: DIFFERENT_MULTIPLE
2296    
2297    checkpoint57h_post
2298    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
2299    o pkg/diagnostics: change output frequency, now in seconds (instead
2300      of Nb of iterations). This requires to change data.diagnostics.
2301    checkpoint57h_pre
2302    
2303    o in mnc, let the user create the output dir if both mnc_outdir_date
2304      and mnc_outdir_num are false
2305    o add fflags() to pkg/diagnostics which allows one to specify, on a
2306      per-file basis, the file precision [default behavior is unchanged]
2307    o added diagnostics to pkg/kpp, including computation of mixed layer
2308      depth based on a temperature/density criterion
2309    o updated verification/natl_box to test the new pkg/kpp diagnostics
2310    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
2311    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
2312    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
2313      not mnc -- this mistake was found by JMC and is now corrected
2314    
2315    checkpoint57g_post
2316    o add Adams-Bashforth 3rd Order time stepping:
2317      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
2318      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
2319    checkpoint57g_pre
2320    
2321    o make lambda[Theta,Salt]ClimRelax spatially varying
2322      (default remains spatially uniform constant based on tau)
2323    o added new control variables
2324      * init. uVel, vVel, etanN
2325      * lambda[Theta,Salt]ClimRelax
2326    o separate masks used for ctrl_pack/unpack 'from write_grid' output
2327      (suggested by G. Forget)
2328    
2329    checkpoint57f_post
2330    o add parameter "baseTime" = model base time = time at iteration zero
2331      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
2332      account for baseTime shift
2333    o move Coriolis arrays from PARAMS.h to GRID.h
2334    checkpoint57f_pre
2335    
2336    o mnc-ifying the seaice package
2337    o introduced an alternative length scale calculation for use in the limiting
2338      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
2339    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
2340    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
2341      as well as grad(vort3).  Made it compatible with both approximate form
2342      for the cubed sphere and full form of these gradients.  Added flag
2343      useFullLeith to select between approximate and full form.  
2344    o add "d0" in getcon.F to reduce differences between compilers/platforms
2345      update output.txt of exp. fizhi-gridalt-hs
2346    o change port_rand funtion to allow to set the seed.
2347    o fix obscure MNC bug involving conversion between reals and integers
2348      - it caused no problems with certain (eg. gcc, ifc) compilers but the
2349        new version is now more standards-compliant
2350    o adjoint-related modifications
2351      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
2352      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
2353      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
2354    
2355    checkpoint57e_post
2356    o Adding eddy stress controls a la Ferreira et al.
2357    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
2358    
2359    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
2360      update output.txt of exp. fizhi-gridalt-hs
2361    o add more "Z" dimensions and associated coordinate vars to MNC
2362    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
2363    o parameter calendarDumps: when set, approximate months (30-31 days) and years
2364      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
2365      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
2366      months and years.  Requires pkg/cal.
2367    o diagnostics: add pickup functionality
2368      - off by default for backwards compatibility
2369      - current version only uses MDSIO -- MNC will be added
2370    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
2371    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
2372    
2373    checkpoint57d_post
2374    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
2375    o modify verification/ideal_2D_oce so that it tests the creation of mnc
2376      output from the diagnostics package
2377    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
2378    o make genmake2 more portable by using ".$FS" instead of ".f" for more
2379      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
2380    o add coordinate variables to the MNC output from the diagnostics package
2381    o change MNC-flags default value: true when useMNC=TRUE
2382    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
2383      the ability (off by default) to read the grid information using MNC
2384    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
2385    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
2386    o do snap-shot diagnostics at the middle of the time-interval (instead of
2387      at the end).
2388    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
2389      new test for AIM with thSIce + slab-ocean
2390    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
2391    o move state variable diagnostics to the beginning of the time step ;
2392      (note: still needs some work specially for snap-shot diagnostics)
2393      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
2394    
2395    checkpoint57c_post
2396    o Change testing option (-ieee) to get closer agreement between g77 & ifort
2397    o generate new output.txt files on faulks with g77 & the new -ieee option
2398    checkpoint57c_pre
2399    
2400    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
2401      update output.txt of exp. global_ocean.90x40x15
2402    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
2403      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
2404    o add saltFlux(+File) forcing capability with periodicExternalForcing
2405    o allow to use pkg diagnostics for GM-Redi & ThSIce output
2406    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
2407    o improvements for the MNC output from DIAGNOSTICS:
2408      - correct handling of the unlimitied dimension
2409      - all dims now have associated coordinate variables
2410      - variables located at U, V, and Corner ("Z") points are now written
2411        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
2412        *all* data points are output
2413    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
2414    o added pkg/seaice/seaice_monitor.F
2415    o mdsio_readfield.F can now read files visible only to master MPI process.
2416    o pkg/seaice: some test code for ice-modified ocean stress
2417    o exf_getffields interpolation defaults to bilinear for all scalar forcing
2418      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
2419      spurious negative numbers for precipitation and humidity.  Will cause
2420      some small numerical differences for integrations using pkg/exf/exf_interp.F.
2421    o pkg/ctrl/
2422      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
2423        May be enabled via doPackDiag
2424      *  introduce z-scaling of
2425         + gradient (doZscalePack) and
2426         + control (doZscaleUnpack)
2427    o pkg/mdsio/
2428      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
2429      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
2430    
2431    checkpoint57b_post
2432    o simplify options in diagnostics_fill arguments (remove weird combinations)
2433    o fix MNC coordinate variables so that they now contain per-face index
2434      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
2435      general, EXCH2 grids are only aligned to a "local" coordinate system
2436    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
2437    o Implement instantaneous output within pkg diagnostics:
2438      setting a negative frequency in data.diagnostics produces
2439     "snap-shot" output (as opposed to time-average if freq > 0)
2440    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
2441      NOTE: change ptracer diagnostics name: use 2 characters to work with
2442            more than 9 tracers. Add also diagnostics of advect & diffus flux.
2443    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
2444      becomes the coordinate variable for the 'T' dimension
2445    o add CF-style coordinate variables to MNC
2446      - just a first cut:  numbers are meaningless on the cubesphere and
2447        missing along the T axis but otherwise it works!
2448    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
2449    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
2450    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
2451      this is based directly on what the model compute, so that the content of
2452      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
2453    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
2454    o clean up build options files for SunOS, in particular
2455      - remove -traditional from xmakedepend
2456      - change -xarch=v9 to -xarch=native for f77
2457      - restore use of make (not gmake)
2458      - add CC=gcc if using g77
2459    o changes per discussion of AM, JMC, & EH3 today:
2460      - move redundant "grid" variables out of "state" -- in preparation of
2461        creating proper CF-style coordinate variables and in recognition
2462        that any/all grid variables can be easily copied (eg. w/NCO) from
2463        the grid files into any of the other NetCDF files
2464      - *always* output grid variables with MDSIO (this will eventually be
2465        changed)
2466      - output MNC grid file if useMNC is true
2467    o every instance of _END_MASTER() has been found and replaced with
2468      _END_MASTER( myThid ) in order to satisfy certain picky Sun
2469      preprocessors
2470    o re-arrange diagnostics pkg initialisation:
2471     - allow each package to extend the available diagnostics list
2472     - add some checking and fix small problems (multi-threaded, ...)
2473     - new S/R diagnostics_fill (replace fill_diagnostics):
2474       look through the short list of active diag. (instead of the long list)
2475       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
2476    
2477    checkpoint57a_post
2478    o this set of changes restores TAMC compatibility
2479      tested for global_ocean.90x40x15 adjoint on trough
2480      (what a pain)
2481    
2482    checkpoint57a_pre
2483    o some modifs in tools/build_options for sunos
2484    o call ctrl_pack for ctrl at end for optimcycle=0
2485    
2486    checkpoint57
2487    o add horizontal bi-harmonic viscosity for vertical velocity
2488      - new parameter viscA4W (defaults to viscA4)
2489      - affects only non-hydrostatic code
2490      - to be done: no-slip lateral boundary conditions
2491    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
2492    o implement Implicit Vertical advection for pTracers
2493    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
2494      (implemented also for implicit vertical diffusion & advection)
2495    o OBCS: extend application of tracer open boundary conditions
2496      to a strip beyond the boundary of width Olx/Oly
2497    o add call monitor to TAF set of required calls (flow directives)
2498      and include in natl_box_adjoint
2499    o untangle a few ifdefs related to cost, ctrl, autodiff
2500      untangel a few ALLOW_ECCO_OPTIMIZATION
2501    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
2502      (theta2, salt2 in ecco_cost_weights)
2503    
2504    checkpoint56c_post
2505    o OBCS as control variables
2506      - update ctrl_ad_diff.list, obcs_ad_diff.list
2507      - remove balance of obcs controls from default
2508      - fix index bug nobcs in ctrl_init
2509      - fix dummy fields filen in ctrl_pack
2510      - add dummy weights for obcs
2511    o lsopt: comment out fort.94 output
2512    o optim:
2513      - remove unnecessary header files
2514      - adjusted namelists
2515      - add xerbla.F to Makefile
2516    o exf:
2517      - multiple modifications of exf_check_range
2518      - unit change in exf_init_runoff from [m/year] to [m/s]
2519    o mdsio:
2520      - i/o-vector change debugLevel from debLevA to debLevB
2521    
2522    checkpoint56b_post
2523    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
2524      is called from DO_THE_MODEL_IO
2525      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
2526      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
2527      - clean up PTRACERS_WRITE_TIMEAVE a little
2528    o add another verification experiment that tests both the cfc-pkg and
2529      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
2530      reactive tendencies treated inline with regular timestepping
2531    o testreport previously did a lousy job of comparing small numbers, so
2532      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
2533      implemented in the little c-progam tmp_cmpnum.c which is embedded in
2534      testreport.
2535    o ptracers_monitor: bug fix for MPI
2536    
2537    checkpoint56a_post
2538    o GCHEM: finish reorganizating the package
2539      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
2540        (introduces another 3D-array for each passive tracer, but only if
2541        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
2542        gchemTendency is not needed because the timestep is done separately)
2543      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
2544      - GCHEM is now---more or less cleanly---separate from PTRACERS
2545      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
2546        so clear to me how that should be done in a general way.
2547    o CFC: improve formatting of output in CFC_ATMOS
2548    o PTRACERS:
2549      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
2550        that ALL experiments with ptracers enable can be checked. This makes
2551        GCHEM_MONITOR obsolete.
2552      - include a runtime parameter PTRACERS_monitorFreq that defaults to
2553        monitorFreq
2554      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
2555    o add PTRACERS (PTR0[1-5]) to testreport output
2556    o exf_check_range:
2557      * default changed to .TRUE.
2558      * will check values for niter0 if debLevA, every timestep if debLevB
2559      * STOP in exf_check_range if 'out of range'
2560      * range chosen generous to allow for potential extema
2561      TBD: a version with stricter range
2562           permitted range would be runtime parameters
2563    o GMredi:
2564      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
2565      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
2566      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
2567    o GCHEM:
2568      - move call to GCHEM_FORCING_SEP, so that it is now called before
2569        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
2570      - introduced a useGCHEM runtime flag and applied it everywhere.
2571      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
2572        this flag is now only visible within GCHEM-pkg routines.
2573      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
2574        be replaced by a 3D array that is computed before thermodynamics; for
2575        this, the tracer ID iTracer had to be included into the parameter list
2576        of ptracers_forcing
2577      - set up forward_step to call gchem_forcing, that will replace
2578        gchem_forcing_int in ptracers_forcing
2579      - cleaning up
2580    o small cleaning of exch2: remove files that are also in eesupp/src
2581    
2582    checkpoint56
2583    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
2584    o mnc: cleanup "full" files--fixes out-of-memory problem
2585    o ECCO-GODAE
2586      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
2587      * fully merged and updated from SIO code
2588        windstress sign change affects
2589        - exf_inscal_[u/v]stress
2590        - sign of xx_tau[u/v] adjustments
2591        - signs in cost_scat
2592      * ctrl_get_gen: avoid update of tau[u/v] for first few days
2593      * natl_box_adjoint updated and compressed
2594      * 2-level checkpoint switch added
2595        (tested in EXP. 1 of natl_box_adjoint)
2596      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
2597    o SVD
2598      * first complete, non-hacked version for SVD calculations
2599      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
2600        performed via direct access files admtlm_vector.it????
2601        (via ctrl_[un]pack)
2602      * optimcycle is used for ARPACK iteration counter
2603        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
2604      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
2605        and add linear transforms where necessary
2606      * controls are initial/final SST, SSS (can be extended; need to check
2607        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
2608    o mdsio: filename info to both stderr, stdout
2609    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
2610      from sign change
2611    
2612    checkpoint55j_post
2613    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
2614      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2615    o add consistent build directories and .cvsignore files to verification
2616    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
2617    o make all subroutines 30 or less characters in length for certain older
2618      compilers to work (a thorough search only turns up two routines in
2619      pkg/ptracers)
2620    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
2621      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2622    
2623    checkpoint55i_post
2624    o change arrays for total vertical diffusivity (2.D if explicit,
2625      3.D if implicit) ; each ptracer uses its own background value.
2626    o added mnc/NetCDF output capability to ocn_compon_interf
2627      - added bits to verification/cpl_aim+ocn so that it can run on
2628        ITRDA and other clusters without the mpirun "-wd" option
2629    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
2630      configuration
2631    o give MNC the ability to create additional files rather than
2632      exceeding a specified file size limit "MNC_MAX_FILESIZE"
2633      - the default is just less than 2GB which is a practical limit
2634        on many systems
2635    o Compute the non-local term using either KPP vertical diffusivity (=default)
2636       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
2637    
2638    checkpoint55h_post
2639    o add verification test "vermix"
2640    o remove all the *_ioinc flags and replace with the single global
2641      outputTypesInclusive flag
2642    o allow to set a vertical profile of vertical diffusivity for T & S
2643    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
2644    o useMNC moved from data.mnc to data.pkg
2645    
2646    checkpoint55g_post
2647    o Renaming carbon AD experiments to comply with testreport conventions
2648    o Updating adjoint of Held-Suarez hs94.1x64x5
2649    o Fixing directives for non-ECCO forward_step, after ECCO directives
2650      have been fixed to avoid recomp. of do_oceanic_phys
2651      Works well for global_ocean.90x40x15,
2652      but recomp. issue remains for carbon
2653    o Updating adjoint output for natl_box_adjoint after
2654      pkg/ecco has been modified (see taga c55d_post)
2655    
2656    checkpoint55f_post
2657    o rename to timeave_init_fixed
2658    
2659    checkpoint55e_post
2660    o some delicate re-shuffle of store directives to avoid one
2661      extra call of do_oceanic_physics
2662      affects ecco_the_main_loop.F, do_oceanic_physics.F
2663      checkpoint_lev1_directives.h
2664    o NB: this may break global_ocean adjoint temporarily,
2665      but it is clear how to fix it. Will do later, need this now.
2666    
2667    checkpoint55d_post
2668    o ECCO specific cost function terms (up-to-date with 1x1 runs)
2669    o ecco_cost_weights is modified to 1x1 runs
2670    o modifs to allow observations to be read in as
2671      single file or yearly files
2672    o enable to read exf forcing fields as either
2673      single file or yearly files (flag useExfYearlyFields)
2674    checkpoint55d_pre
2675    
2676    o switch between 2-level and 3-level checkpointing
2677    o add ability of MNC to write local and "partial" (eg. 2D slices where
2678      the full 3D field is never actually stored) arrays to NetCDF files
2679      with the correct (that is, the complete multi-dimensional) set of
2680      array indicies
2681      - used in mom_vecinv() to write the diagFreq output
2682      - tested (demonstrated) in verification/aim.5l_cs
2683    o further mnc-ification
2684      - add verification/lab_sea to the list with mnc setups
2685      - fix undefined mnc v-names in cd_code
2686      - add kpp to mnc output (both snapshot and timeave)
2687    o non-hydrostatic code
2688      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
2689        in calc_gw.F
2690      - defaults to viscAh
2691      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
2692        friction or Leith) in non-hydrostatic mode, as long as there is
2693        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
2694    o pkg/cost
2695      extend simple cost functions to treat time mean quantities
2696      (T,U,V) via cost_accumulate_state from cost_tile
2697    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
2698        be 2 times larger than the minimum size the advection scheme requires.
2699        now get a perfect conservation of salt in advect_cs test-exp (updated)
2700    o GGL90 (Gaspar's TKE mixed layer)
2701      - add horizontal diffusion of TKE, requires exchanges in
2702        do_fields_blocking_exchanges, horizontal diffusivity is zero by
2703        default. In OPA there is no horizontal diffusion of TKE but the
2704        mixing coefficients are computed from a horizontal average of TKE of
2705        6 points or so. I think that diffusion has a little more physical
2706        justification.
2707      - clean up ggl90_calc in the hope of reducing memory usage (this hope
2708        was in vain)
2709      - mask tke-variable in ggl90_init
2710    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
2711    o fix biharmonic diffusion on CS-grid.
2712    o more obcs stuff
2713      - added obcs_external_fields_load as an alternative to the EXF-pkg option
2714        for reading boundary values. This routine is called from
2715        obcs_prescribe_read
2716      - updated obcs_check
2717      - changed sponge layer relaxation parameter units for days to seconds
2718      - turned off sponge layer by default
2719      - changed argument list of OBCS_CALC to myTime+deltaTclock
2720      - fixed about 35 bugs in obcs_external_fields_load
2721    
2722    checkpoint55c_post
2723    o obcs stuff
2724      - new runtime flags useOBCSprescribe, useOBCSbalance
2725      - re-arranged obcs_calc
2726      - moved exf_getobcs to obcs_prescibe_read
2727        obcs_prescibe_read is called after ORLANSKI stuff
2728        and independent of it (executable can contain all).
2729      - updated obcs_check
2730      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
2731        These may be necessary only if tangential velocities are
2732        prescribed at OB, not sure, needs testing.
2733    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
2734      which simplifies the calls and passes the ifc check-bounds test
2735    
2736    checkpoint55b_post
2737    o add a 2D scalar, Z location, exchange_2 routine.
2738    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
2739      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
2740      affects advect_cs results (for the wrong reason): update output.txt
2741    o use a more standard discretization for biharmonic viscosity ;
2742     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
2743      affects results of dome set-up: update output.txt
2744    o fix gad_advection.F (CubedSphere part), back to version 1.23
2745    o fix bug in mom_vi_del2uv.F (CubedSphere part).
2746    
2747    checkpoint55a_post
2748    o merged code to
2749      * prescribe/read time-dependent open boundaries
2750        (works in conjunction with exf, cal)
2751      * sponge layer code for open boundaries
2752      * each boundary N/S/E/W now has its own CPP option
2753        (healthy for the adjoint)
2754    
2755    checkpoint55
2756    o up-to-date adjoint of previous breaks
2757      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
2758      - global_ocean_ebm: adjoint still needs fix (TLM ok)
2759      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
2760      - carbon: * remove tr1-related adjoint verification
2761                * add ptracer as control variable
2762    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
2763      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
2764    
2765    checkpoint54f_post
2766    o in verification/carbin/ remove experiment related to
2767      ALLOW_PASSIVE_TRACER (array tr1 etc)
2768      code_ad/ input_ad/ results_ad
2769    
2770    o add two new packages
2771      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
2772        + subject to optimization (memory)
2773      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
2774        + subject to reordering (many GOTOs in the original code)
2775        + so far opps is called for every (i,j) point, and then operates in
2776          the vertical; one may want to reorder the scheme in order operate in
2777          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
2778          fields)
2779    o overhaul of IO so that we now have flags for MDSIO and/or MNC
2780      - all verification tests compile and run with linux_ia32_g77
2781      - defaults are compatible with current input files--nothing
2782        should change if you were not previously using MNC
2783      - MNC output has been added in numerous places (eg. timeave)
2784        but there are still a few writes not yet do-able with MNC
2785        (this is in progress)
2786      - flags now allow for either/or/both use of MDSIO and MNC and
2787        documentation will soon follow
2788      - numerous small formatting cleanups for ProTeX
2789    o add version info (via BUILD_INFO.h) to MNC and stdout
2790    
2791    checkpoint54e_post
2792    o add two new packages
2793      - pp81 (Packanowski and Philander, 1981), Richardson number and
2794        stratification dependent mixing
2795      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2796      - these scheme operate in a similar manner as KPP (without ghat, of
2797        course), however there is only one diffusivity that is used for both
2798        temperature and salinity (and passive tracers)
2799    o add offline package
2800    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2801      provided by Stephanie Dutkiewicz
2802    o genmake2: add ability to search for C compilers and cleanup test output
2803      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
2804    
2805    checkpoint54d_post
2806    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
2807    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
2808      leading to additional shift by 5 days each year of integration
2809       (i.e. leading to considerable offset over the years)
2810    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
2811    o start with no AB and no initial filtering (staggerTimeStep):
2812      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
2813    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
2814      (external loading & cpl import/export stay in forward_step.F)
2815    o update coupling interface to work with new staggerTimeStep
2816    o change MDSIO ptracers_pickup.
2817    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2818    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2819    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2820    
2821    checkpoint54c_post
2822    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2823      this affects (truncation error) output.txt of test-exp:
2824       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2825    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2826    o change Qnet to always be the net heat flux, (+upward).
2827      affects (truncation error) output of natl_box exp.: updated
2828    o define the max number of passive tracers in PTRACERS_SIZE.h
2829    o start to test mnc routinely in exp0
2830    o add sea-ice loading (sIceLoad) as a new forcing field.
2831    
2832    checkpoint54b_post
2833    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2834       impressive on Altix and Opteron systems)
2835    o diagnostics can now write NetCDF files through the mnc package
2836    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2837    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2838    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2839      affects (truncation error) output of lab_sea & natl_box exp.: updated
2840    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2841    
2842    checkpoint54a_post
2843    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2844    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2845    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2846    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2847      + internal_wave (shift in writing cg2d_ini_res)
2848    checkpoint54a_pre
2849    
2850    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2851      - modified verification/lab_sea and natl_box_adjoint accordingly
2852    
2853    checkpoint54
2854    checkpoint53g_post
2855    o prepare splitting of thermodynamics: store convect.counter in common block
2856    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2857      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2858    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2859    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2860    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2861    o restore adjointability
2862    
2863    checkpoint53f_post
2864    o modifications that affect AIM experiment results (update output.txt):
2865      - no advection of S at top interface Nr (pkg/generic_advdiff)
2866      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2867    o AIM pkg:
2868      - include stability function into surf.Flux derivative relative to Tsurf
2869      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2870    
2871    checkpoint53e_post
2872    o merged cylindrical coord configuration
2873    o added rotating_tank experiment
2874    checkpoint53e_pre
2875    
2876    checkpoint53d_post
2877    o faulks upgraded: re-generate output.txt that have changed:
2878       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2879    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2880    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2881    o added Sadourny discretization of Coriolis
2882      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2883      - re-enabled use of omega3 (useAbsVorticity)
2884    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2885      vector-invariant equations
2886      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2887    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2888      hopefully without new bugs
2889      - still to do: biharmonic friction for non-hydrostatic w
2890    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2891    o regenerated output for global_ocean_ebm (using -ieee)
2892    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2893      of mom_common/
2894      - simple re-arrangement of instructions within computing loop
2895    checkpoint53d_pre
2896    
2897    checkpoint53c_post
2898    o new version of coupler for AIM+thSIce and Ocean models
2899     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2900     - land: change Evaporation of snow
2901     - aim with thSIce: fix bug in snow-precip.
2902    o changes to calc_gw.F
2903     - bug fix for w^2 term near the bottom boundary
2904     - (hopefully) improve the lateral slip boundary condtions for use with
2905        partial/looped cells
2906      - because the bug fix changes two verification experiments anyway (exp5
2907        and plume on slope), change the lateral boundary condition from half slip
2908        to the value of no_slip_sides
2909    o ebm package wasnt quite up to the parallel task. Fixed that.
2910    o Adjoint of EBM package + verification
2911      * TLM OK
2912      * ADM not sufficient accuracy yet (needs further testing)
2913    
2914    checkpoint53b_post
2915    o Commiting new energy balance model to repository
2916      * package is pkg/ebm
2917      * verif. is verification/global_ocean_ebm
2918      * references are in ebm_driver.F
2919    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2920    C        Global thermohaline circulation. Part I:
2921    C        Sensitivity to atmospheric moisture transport.
2922    C        J. Climate 12(1), 71-82
2923    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2924    C        Global thermohaline circulation. Part II:
2925    C        Sensitivity with interactive transport.
2926    C        J. Climate 12(1), 83-91
2927    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2928    C        Destabilization of the thermohaline circulation
2929    C        by atmospheric eddy transports.
2930    C        J. Climate 7(12), 1870-1882
2931    o Will need long integration testing.
2932    checkpoint53b_pre
2933    
2934    o created pkg/mom_common in preparation for variable viscosity code
2935    o renamed and split ini_mnc_io
2936    o pkg/land: only liquid water can diffuse or run-off
2937    o AIM using land: soil wetness availability account for snow
2938    o added printMapIncludesZeros to EEPARMS namelist
2939    
2940    checkpoint53a_post
2941    o restore TAMC compatiility for exf_constants.h
2942      (no usage of _d in .h)
2943    o Additional storing in KPP in an attempt to fix
2944      TAMC problem with adjoint of KPP code.
2945      (no success...)
2946      Identical code works fine with TAF.
2947    o Fixed verification/natl_box_adjoint experiments.
2948      Initial conditions for Experiments 4 and 5 are now
2949      set to "SEAICE_initialHEFF=0", which is more reasonable,
2950      and hence gives results closer to that of Experiment 2.
2951      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2952    
2953    checkpoint53
2954    o stable checkpoint with up to date adjoint
2955      TLM tests only run for 1st grdchk at the moment. Its unclear if
2956      this is a code problem or a problem with resetting code for g_
2957      variables that is being autogenerated wrong.
2958      Otherwise:
2959       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2960       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2961         are both still in chaos following their security messes.
2962    
2963    checkpoint52n_post
2964    o various build (mostly genmake2) changes including:
2965      - ability to build/run more easily within Cygwin and MacOS X
2966      - more complicated Makefiles with a stronger dependence on Gnu Make
2967    o pkg/seaice modifications
2968      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2969        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2970        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2971      - changed proxy for geostrophic velocity and updated
2972        verification/lab_sea/results/* accordingly
2973      - removed ADI dynamic solver from pkg/seaice
2974      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2975        they caused a segmentation fault under certain circumstances
2976      - removed unused field WATR
2977    o bug fix in exf-package:
2978      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2979         now reflect that.
2980    o small fixes in the cal-package:
2981      - set reference date to first of January for the 'model'-calendar
2982      - failing of cal_CheckDate in cal_FullDate now actually results in a
2983        warning
2984    o small modifications in exf-package to increase flexibility:
2985      - change climtempfreeze from a constant to a runtime parameter that
2986        is specified in data.exf_clim (default = -1.9)
2987      - introduce runtime parameter windstressmax (default = 2.0) that is
2988        specified in data.exf
2989    o fix in pkg/thsice:
2990      - update Evap (Tsf changes) to be consistent with Latent heat flux
2991      - maintain snow precipitation unchanged (even if Tsf >=0).
2992     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2993    
2994    checkpoint52m_post
2995    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2996      this does not change any of the results, because myIter=0 in swfrac always
2997      lead to jwtype=2 (the default anyway), but the call makes little sense
2998      as a default
2999    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
3000    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
3001      atmospheric model (AIM) to use it ; add a "slab ocean" component.
3002    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
3003    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
3004    o extending useSingleCpuIO option to work with new exch2 I/O format
3005      - old-style, missing-tile I/O is still accessible by defining CPP
3006        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
3007    o monitor package can write to NetCDF files and/or STDOUT
3008    o fix re-definition bug in MNC_GRID_INIT_ALL()
3009    o doc/api_reference added
3010      - a framework for building an API Reference Manual using all
3011        the "protex" comments embedded in the code
3012      - see pkg/generic_advdiff, pkg/mnc for examples
3013    o MNC:
3014      - make myThid the last argument for all subroutines
3015      - new default for the grid files: NO halos
3016      - add useMNC and other run-time flags
3017      - separate per-file-group handling of the unlimited dimension
3018      - early initialization of MNC w/ flags read at the eeboot stage
3019        and lookup tables set in initialize_fixed
3020      - write all MNC output to a freshly-created directory
3021    o thermodynamics sea-ice (thsice) is now tested with testreport.
3022    o test exp. advect_cs: use the standard cs32 grid ; update output.
3023    o Added functionality to grdchk:
3024      pick global i,j,k position (or nearest wet) where to perform check.
3025    
3026    checkpoint52l_post
3027    o new land formulation:
3028      a) use ground enthalpy as prognostic variable to ensure exact
3029         energy conservation.
3030      b) account for water temperature and for latent heat of freezing
3031         in all processes (rain, run-off, ground storage)
3032      c) compute surface and ground temperature implicitly.
3033    o aim_v23 modification for new land model:
3034      a) Treat separately land / ocean / sea-ice surface fluxes
3035         to allow implicit computation of land & sea-ice surface temp.
3036      b) add snow precipitation.
3037    checkpoint52l_pre
3038    
3039    o fix problem (when 1 tile is empty) in min/max monitor.
3040    o fix bug in timeAve (u,vZetatave in common block)
3041    o no restoring terms under ice for pkg/seaice
3042    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
3043    o bug fix for pkg/seaice pickups
3044    o change MNC call locations and add coordinate attributes
3045    o mask vorticity at the corner ; affects global_ocean.cs output
3046    o fix ini_curvilinear_grid ; test CS experiments with mpi
3047    o aim.5l_cs: modify sea-ice fraction input file ; update output
3048    o exf: Adding simple range check routine for exf fields after read
3049    
3050    checkpoint52k_post
3051    o removed top-level directory "diags"
3052      - we migrated these functions to pkg/timeave a long time ago
3053    o fixed bug introduced in pkg/monitor
3054    o accuracy ctrlprec = 32 insuffient for gradient checks using
3055      averaged fields (I/O via cost_averages)
3056      -> use ctrl.h in active_file*.F to control I/O precision.
3057    o paramter list of CALL ADTHE_MAIN_LOOP
3058    o added initial do_the_model_io to ecco
3059    o set all ...Freq to zero after cost_final
3060      taveFreq, dumpFreq, pChkptFreq
3061    o MAIN and ECCO differentiability restored
3062    
3063    checkpoint52j_post
3064    o fix nchklev in tamc.h for global_ocean...
3065    o Bringing flow and store directives up-to-date
3066    o Really weird thing!
3067      call do_the_model_io from the_main_loop with parameters
3068      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
3069      TAF places a faulty re-call of initialise_varia
3070      after cost_final call which should not be there!
3071    checkpoint52j_pre
3072    
3073    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
3074      error messages
3075    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
3076    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
3077      debug output
3078    o modfied mdsio_writefield.F to handle non-global files under exch2
3079    o update AIM Cubed-Sphere exp (aim.5l_cs):
3080      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
3081    o update AIM Equatorial Channel exp:
3082      use standard aim_v23 pkg and change the SST fields to be more realistic.
3083    o globalFile now works with exch2
3084    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
3085      mon_vort3.F to make exch2 friendly with >1 tile per cube face
3086    o limit timeave output for hi-res integrations
3087    
3088    checkpoint52i_post
3089    o removed CPP_EEOPTIONS.h from verification/*/code
3090    o updated the tiling for global_ocean_pressure
3091    checkpoint52i_pre
3092    
3093    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
3094      the old pkg/aim).
3095    
3096    checkpoint52h_pre
3097    o shortened offending lines in exch2_send_rx?.template
3098    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
3099  o genmake2: add build & execute test for NetCDF code  o genmake2: add build & execute test for NetCDF code
3100  o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed  o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
3101    old grid files, moved CPP_EEMACROS.h to pkg/exch2    old grid files, moved CPP_EEMACROS.h to pkg/exch2
3102  o added useSingleCPUIO flag to monitor.F and mon_out.F  o added useSingleCPUIO flag to monitor.F and mon_out.F
3103    o added temporary hack for sea-ice dynamics on the cube:
3104      metric terms are ignored and it is assumed that
3105      there is no sea-ice on cube faces 1, 2, 4, and 5.
3106    
3107  checkpoint52f_post  checkpoint52f_post
3108  o added exch2 cube routines to pkg/exch2  o added exch2 cube routines to pkg/exch2

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