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revision 1.125 by jmc, Mon Jan 27 21:42:19 2003 UTC revision 1.1169 by mlosch, Thu Oct 8 08:20:19 2009 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg seaice/autodiff:
8     left-over from removing the 3-time-level fields:
9     - small rearrangement of common blocks (SEAICE.h)
10     - fix field declaration in order to get meaningful output in
11       adseaice.*.nc (adcommon.h)
12    o pkg obcs:
13     - go through NH code only if nonHydrostatic=T
14     - fix restart for Orlanski (Hydrostatic; still to fix NH+Orlanski restart)
15     - move call to OBCS_CALC before SEAICE_MODEL which needs seaice-obcields
16       => Update output of experiment seaice_obcs
17     - useOBCSbalance: code is wrong with multi-tile / proc: add a stop.
18     - fix NH+Orlanski restart (add wvel OBC value in pickup file)
19     - fix restart for useOBCSprescribe + useEXF
20    o pkg ctrl
21     - make obcs as control parameter work also with useSingleCPUio
22     - replace a few sny and snx by Ny and Nx to be consistent with
23       ctrl_set_globfld_x/yz.F
24    o pkg seaice
25     - re-introduce global field frWtrAtm for the case of
26       ALLOW_MEAN_SFLUX_COST_CONTRIBUTION defined (SEAICE.h, seaice_growth.F)
27     - catch the case of an empty filename in seaice_cost_init_fixed.F
28    o pkg ecco:
29     - small bug fixes in the_main_loop
30      . fix order of monitor arguments
31      . change SEAICE_MULTILEVEL to SEAICE_MULTICATEGORY
32      . move include DYNVARS.h up outside the ALLOW_AUTODIFF_TAMC block so
33        that ALLOW_ECCO_FORWARD_RUN works with NONLIN_FRSURF
34     - replace cos(yc*deg2rad) by _rA in cost_mean_heat/saltflux.F, fix the
35       imbalance diagnostics for wmean_h/sflux = 0
36     - add actual values to f_obcsn/s/w/e in ecco_cost_final.F
37     - catch the case of empty filenames in ecco_cost_init_fixed.F
38       and ecco_readparms.F
39     - fix the logic of wsalt=0.and.wsalt2=0 to wsalt=0.or.wsalt2=0 (and theta)
40       to make this statement meaningfull in ecco_cost_weights.F
41    o pkg zonal_filt:
42      - change ZONAL_FILTER S/R interface (allows to filter 2-D fields)
43      - when using rStar, filter uVel*hFacW instead of uVel
44       (tested without topography: fix a Pb of growing instability with NLFS)
45    o pkg/aim/thsice:
46     -Add capacity to read a Q-Flux to be applied in slab-mixed layer thsice_slab_ocean.F
47      (works as SST restoring)
48    o pkg/thsice:
49     -add specific parameter for salt restoring in slab mixed-layer
50       (by default equal to the temperature restoring)
51    
52    checkpoint61v
53    o pkg/kpp:
54     -add double diffusive contributions as a hack, turned off by default
55      for now, and the code can be excluded with a CPP-flag
56      EXCLUDE_KPP_DOUBLEDIFF just as EXCLUDE_KPP_SHEAR_MIX
57     -add a verification experiments to "vermix" to test this code
58    o pkg/mom_common:
59      Move computation of length scales to mom_init_fixed.F (avoid recomputation
60      at each time-steps*levels).
61    o pkg/layers:
62      Created a new package for computing volume fluxes in temperature or
63      [not yet implemented] density layers, e.g. for calculating residual
64      overturning circulations.
65    o pkg/diagnostics:
66      implement a RS type version for the set of DIAGNOSTICS-FILL subroutines
67    o fix few RS/RL type mismatch (check with ifort 11.1 "-warn all" option)
68    o pkg/mdsio (& pkg/rw): rework high level S/R interface:
69      To avoid mixing type (RS/RL) of input/output array argument,
70      replace single mixed-type array with a pair from each type (RS/RL).
71    o setting pickupSuff force to start from a pickup (even if nIter0=0): this
72      is now implemented for all pkgs (previously only done for the main pickup)
73    
74    checkpoint61u
75    o pkg/obcs:
76      - change OB?eta from _RS to _RL and put them into a separate commen block
77      - add code to read OB?eta from a file via obcs_prescribe_read: the code
78        compiles and does not destroy any other experiments, the data is read
79        properly, but the code is not tested in actual applications
80    o ini_mnc_vars.F: if available (ALLOW_CAL), use startTime_1 and 2 to
81      create a meaningful unit attribute for the time coordinate variable
82    o pkg/ebm: add plenty of missing "_d 0" ;
83       update results of experiment global_ocean_ebm (fwd + adjoint tests)
84      Notes: several pieces of code only works for (very) specific set up
85       (domain size, lat range, etc ...); should be documented & stop if one
86       of those assumptions is not meet.
87    o pkg/seaice: add missing "_d 0" in HSNOW initialisation
88       update results of experiments: lab_sea (3 fwd tests + 2 adjoint tests)
89          and offline_exf_seaice (seaicetd + adjoint).
90    o add missing "_d 0" in ShortWave flux penetration (S/R SWFRAC):
91       update results of experiments: lab_sea (4 fwd tests + 3 adjoint),
92        seaice_obcs, global_ocean.cs32x15 (icedyn & thsice) and natl_box (x2).
93    o few changes to pass when compiling with strick checking of arguments
94       across S/R (allow to find few bugs in S/R calls).
95    o pkg/seaice:
96     - seaice_evp: move if-statement out of loop (TEM) at the cost of 11 new
97       2d-fields, for slightly better performance
98    
99    checkpoint61t
100    o pkg/seaice:
101     - remove unused variables in seaice_evp
102     - reduce number of SQRT in seaice_evp and seaice_calc_viscosities
103    o eeset_parms.F, open_copy_data_file.F & ini_parms.F:
104       named file replacing SCRATCH files (for TARGET_BGL & TARGET_CRAYXT):
105       each processor opens a different file (a fix from Matt).
106    o cg2d:
107       use simple EXCH (overlap size = 1 and ignore corners), like in cg3d.F :
108       this reduces number of EXCH calls by 2 when using exch2.
109       For now, keep previous size array for gc2d_nsa.F to avoid Pb with store
110       directives and missing simple EXCH (exch_s3d_rx) adjoint code.
111    o pkg/thsice:
112       add code for Near Infra-Red albedo (from Jeff)
113       (turned on with run-time flag: thSIce_calc_albNIR, in data.ice).
114    o ini_model_io:
115       move (from packages_readparms.F & initialise_fixed.F) to ini_model_io.F
116       MNC & MONITOR initialisation calls; move MNC calls from {pkg}_readparms.F
117       to {pkg}_init_fixed.F for {pkg}= kpp, seaice & shelfice.
118    
119    checkpoint61s
120    o pkg/exch2 (exch2_rxN_cube*):
121       remove last BARRIER (no need to synchronise after getting data from shared
122       buffer (get) as long as any change to buffer (put,recv) is between BARRIER)
123    o change tiling of natl_box (from 2 to 4 tiles) to get it tested with MPI+MTH
124      and generate new output (for the 2 tests) using default rotationPeriod.
125    o pkg/exch2:
126      - always call exch2_*_cube, not exch-1 anymore, if useCubedSphereExchange=F
127        (was already the case with AUTODIFF_EXCH2 defined)
128      - add bj in exch2 arrays and S/R.
129      - can now use pkg/exch2 for regular (non CS) set-up; switch test experiment
130        MLAdjust to exch2 (identical results except with MPI -> truncation diff);
131    o add pkg/longstep for ptracer timestep a multiple of U/V/T/S timestep
132      - adds deltaT argument to the subroutines TIMESTEP_TRACER DWNSLP_APPLY
133        GAD_ADVECTION GAD_CALC_RHS GAD_IMPLICIT_R GAD_SOM_ADVECT
134      - verification experiment natl_box.longstep
135    o build_options: ifort+mpi_aces optfile (following Constantinos advise):
136      allow different versions of ifort (8 or 9) and different versions
137       of mpi (mpich or mpich2) to be used with the same optfile.
138      requires to load a netcdf module and set MPI_INC_DIR (see comments inside
139       optfile). Change testing scripts (example_scripts/ACESgrid) accordingly.
140    o pkg/seaice:
141      fix previous modif (3-level field removed) for old-pickup reading
142    
143    checkpoint61r
144    o pkg/seaice:
145     - clean up the 3-time levels of UICE,VICE,HEFF,AREA in three steps:
146      1. introduce fields for time step (N-1)
147      2. do not use levels 2 and 3 anymore (but keep them)
148      3. replace 3D versions of UICE,VICE,HEFF,AREA by 2D versions. This
149         includes changes to pkg/thsice/thsice_get_velocity.F,
150         model/src/external_forcing_surf.F, pkg/obcs/obcs_apply_seaice.F, and
151         pkg/obcs/obcs_apply_uvice.F.
152     - completely remove code for leap-frog time stepping for second order
153       advection
154     - adjusted adjoint accordingly;
155       gradient checks have improved by an order of magnitude!
156    
157    checkpoint61q
158    o pkg/seaice: fix bug in free slip boundary conditons for LSOR solver
159     - the boundary conditions along open boundaries are unclear, because the
160       associated masks are set to zero and are thus treated as closed when
161       applying the slip-boundary conditions.
162     - move initialisation of grid variables from seaice_init_varia to _fixed
163    o adding doc/diags_changes.txt
164    o model/src:
165      do_the_model_io: rename few pkg S/R which are called from do_the_model_io,
166       to avoid "_diags" naming if no relation to pkg/diagnostics.
167      ini_theta,ini_salt: fix (at least compile the code) reading from NetCDF
168       file and only call PLOT_FIELD_XYZ if debugMode=T.
169      remove few PLOT_FIELD_XY calls outside initialisation.
170      remove few unnecessary BARRIER.
171    o pkg/salt_plume: add SaltPlumeSouthernOcean to allow disabling
172      of salt_plume package in Southern Ocean
173    o pkg/thsice:
174     - fix hOceMxL in overlap (needed for sea-ice advection);
175       update output of experiment global_ocean.cs32x15.icedyn.
176    o pkg/seaice:
177     - make the (placeholder-)tracer IceAge a little more meaningful
178      by avoiding ridging of age due to convergent ice flow
179     - add diagnostics for surface temperature, atmospheric and oceanic
180       heat flux, and atmospheric and oceanic ice growth
181    
182    checkpoint61p
183    o eesupp (global_max & global_sum):
184     - add one more element to buffer (start at index 0) for GL_MAX/SUM output;
185     - remove starting & endding barrier (no longer needed)
186    o pkg/mdsio, writelocal:
187       works also in multi-threaded when LOCBIN_IO_THREAD_SAFE is undefined
188       (remove the STOP): uses shared buffer IO to store data from all threads
189       and then let master-thread write nThreads tiles.
190    o pkg/mdsio (read/write field):
191     - tiled IO done in 1 piece (all levels at a time);
192     - new header file "MDSIO_BUFF_3D.h" with 3-D buffers.
193     - multi-threaded: allow to read/write local (non-shared) array
194       (was already working with singleCpuIO ; now works also without);
195       => no longer needs barrier call after reading a file (added inside
196       mds_read/write field).
197     - move barrier calls outside gather/scatter_2d to mds_read/write_field
198    o pkg/obcs/exf
199      - exf_getffieldrec.F: add a few ". _d 0" and
200                            add code to catch the case fldperiod = 0.  
201      - obcs_precribe_read.F: change if statements so that they match
202                              the variable type (_RL)
203      - add a separate exf_iprec_obcs to exf_set_obcs (by default equal to
204        exf_iprec) as part of namelist EXF_NML_01
205    o pkg/mdsio:
206      - read/write tiled (local) files: read/write 1-level tile chunk at a time
207        (instead of segment of length sNx); expected to speed up tiled IO.
208    o pkg/exch2:
209      - take buffer copy from/to array out of S/R exch2_send/recv into new
210        S/R exch2_put/get ; Exch of local variable now works with MPI+MTH
211        (tested by removing commom block statement in SOLVE_FOR_PRESSURE.h).
212      - ad version of send/recv no longer needed (but needs exch2_ad_put/ad_get)
213      - simplify argument list of S/R exch2_get_uv_bounds and exch2_get_scal_bounds
214        (which replaces exch2_get_recv_bounds & exch2_get_send_bounds) by
215        including Topology header file (and common blocks).
216      - implement EXCH_IGNORE_CORNERS in scalar exchange (rx1);
217        remove 2nd exch call in exch2_s3d_rx (no longer needed).
218      - document S/R arg. list (+ update some comments)
219    o pkg/seaice:
220      - added SEAICE_CLIM_AIR code, which permits modulation of surface air
221        temperature and humidity over sea ice based on climatological values.
222      - clean up computation of Hibler+Bryan (1987) stress coupling for the case
223        of LSR (this change is expected to change the results slightly because now
224        it uses slightly difference moduli from the second last LSR solution, but
225        that is more consistent with the stress computations; this part of the code
226        is not tested in the verification experiments)
227      - fix diagnostics for flux of ice in case of B-grid
228      - turn strain rates eij and press into global fields within global
229        common block in SEAICE.h for more straighforward diagnostics
230      - fix diagnostics for principal stress components, press, zeta, eta
231        to give something meaning full
232    o change tiling of global_ocean.cs32x15 (12 tiles, 32x16) and generate
233      new output (all 4 tests) using default rotationPeriod.
234    o pkg KPP:
235      - add flag (LimitHblStable) to avoid limiting BL depth under stable conditions
236      - fix vertical indices in RI_IWMIX (match between KPP grid from 0 to Nr+1
237        and normal grid from 1 to Nr)
238    o Fix computations of L4rdt in mom_calc_visc.F
239    o eesupp:
240      new S/R ALL_PROC_DIE (like EEDIE, without irrelevant threads err msg):
241      should be called before a "stop" if we know that all process are going
242      to stop; if one Proc does call this S/R, will hang in MPI_FINALISE.
243    
244    checkpoint61o
245    o pkg/exch2: change check_depths to issue just a warning (instead of error+stop)
246    o model/src/ini_curvilinear_grid.F:
247       compute angleSin/CosC when they are not read from a file
248    o pkg/seaice:
249       add pseudo time stepping for LSOR
250    o pkg/exch2:
251       temporary fix for exch2_s3d_rx; update results of exp. hs94.cs-32x32x5.impIGW
252    o pkg/seaice:
253       Adding separate sea ice albedo, drag coefficients, and HO in Southern
254       Ocean from those in Arctic Ocean.  See *_south in SEAICE_PARAMS.h
255    o SingleCpuIO:
256       fix bug put before chkp61n (May 11), when more than 2 MPI cpu are used.
257    o pkg/seaice:
258       put exchanged variable in (local) common block for MPI+Multi-Threads
259       to work (necessary with exch1, and for now with exch2 too).
260    o verification: to get more experiments tested with mpi, mth and mpi+mth,
261      change tiling of:
262       aim.5l_Equatorial_Channel, aim.5l_LatLon, dome, exp4, global_ocean.90x40x15,
263       hs94.cs-32x32x5, MLAdjust, offline_exf_seaice & tutorial_plume_on_slope
264      update output of exp:
265       exp4, global_ocean.90x40x15(+.dwslp), MLAdjust(all 5),
266       tutorial_plume_on_slope and hs94.cs-32x32x5 (use default rotationPeriod)
267      + ideal_2D_ocean: use default rotation period + test Global_Sum_SINGLECPU
268                       (note: output.txt generated on faulks using only 1 tile)
269    o eesupp & mdsio (SingleCpuIO):
270     - remove MISSING_TILE_IO (from MDSIO_OPTIONS.h), replaced by run-time
271       parameter "W2_useE2ioLayOut" (read from file "data.exch2").
272       Note: was not effective for globalFile & useSingleCpuIO=F; now fixed.
273     - move MDSIO_SCPU.h (pkg/mdsio) to EEBUFF_SCPU.h (eesupp/inc).
274     - fix GLOBAL_SUM_SINGLECPU when using Exch2; re-use same buffers and same
275       gather/scatter S/R as with SingleCpuIO (=> 1 less 2D global RL array).
276    o pkg/exch2:
277     - new code to set-up W2-Exch2 topology (replace matlab-topology-generator):
278       read parameter file "data.exch2" if it exists; otherwise try default regular
279       cube without blank-tile; new header file "W2_EXCH2_SIZE.h";
280     - update matlab-topology-generator (exch2_setup_cs6_print.m) to be compatible
281       with new code (not to be used, just as a backup solution).
282     - add examples (e.g., for lat-lon-cap_120) of parameter file "data.exch2"
283       in utils/exch2/input.
284    
285    checkpoint61n
286    o eesupp & mdsio (SingleCpuIO):
287      - move mapping to global io-buffer inside gather_2d/scater_2d: this save
288        memory (1 less 2D global RL array); skip 1 buffer copy; and only send/
289        receive real*4 array (instead of real*8) to read/write 32.bit files.
290        (new template for gather_2d/scater_2d, new set of S/R MDS_PASS_R4,8toRL,S
291         and remove new mapping S/R)
292    o pkg/mdsio: in preparation for topology-generator within pkg/exch2:
293      - Change declaration of SingleCpuIO buffer, reduced to only 1 dim.:
294        xyBuffer_size, which is set to W2_ioBufferSize from W2_EXCH2_PARAMS.h
295        when using exch2. Add S/R to map global io-buffer to global model array.
296      - uses exch2_global_Nx,y instead of exch2_domain_nxt,nyt.
297    
298    checkpoint61m
299    o write_utils : change WRITE_1D_R8 to WRITE_1D_RL
300      and add 3 other S/R for other types (R4,R8,RS).
301      Change calls to WRITE_0D/1D_R[4,8,S,L] to match the type of argument.
302    o eesupp/inc/CPP_EEMACROS.h (EXCH & GLOBAL_SUM/MAX macros):
303     - ensure suffix (_R4,_R8,_RS,_RL) correspondance between macro and S/R ;
304     - reduce number of macro definitions (keep only those which are used);
305       can always call directly the corrresponding S/R if needed.
306     - everywhere in the code: change macros (EXCH & GLOBAL_SUM/MAX) suffix
307       _R4/_R8 to _RS/_RL when applied to _RS/_RL variable.
308     Fixed wrong type of arg in:
309       atm2d/put_ocnvars.F cheapaml/cheapaml.F ocn_compon_interf/ocn_apply_import.F
310       ctrl/ctrl_map_ini_ecco.F seaice/seaice_do_diags.F seaice/seaice_model.F
311     To fix: global_sum of var in common block is wrong (multi-threaded) in:
312       dic/dic_atmos.F ebm/ebm_area_t.F ebm/ebm_zonalmean.F sbo/sbo_calc.F
313     To fix: aim_v23/aim_do_co2.F (BARRIER & GLOBAL_SUM within bi,bj loops)
314    o adjustment.cs-32x32x1: test "blank tiles" when compiling with mpi; 2nd
315      "nlfs" mpi test is going to stop when checking for unconnected tile egdes.
316    o eesupp/src: new S/R to stop everyone when 1 (or more) Proc. find an error
317    o pkg/exch2: new S/R EXCH2_CHECK_DEPTHS to check that unconnected tile
318      edges are closed (zero depth); might happen with "blank tiles";
319      for now, disabled if using OBCS.
320    o tools/gemake2: delete modifs from March 27-29 2009 (with option "-mpi":
321      link *_mpi files from "MODS" dir) to return to a strait-forward behavior.
322    o move read_write.F to write_utils.F ; new parameter (maxLengthPrt1D)
323      to reduce length of 1.D array print in STDOUT.
324    o adjustment.cs-32x32x1: changed to oceanic test with 1 continent
325      + use 48 tiles (16x8): this will allow to test "blank tiles".
326    o start to test MPI + multi-threaded (change testreport to skip tests
327      where number of tiles do not match).
328    o genmake2: add option "-omp" to turn on Open-MP ;
329      passed to testreport (if using -mth) ; merge few (*+mth) optfiles.
330    o pkg/exch2 (+ utils/exch2): ignore blank tiles (instead of removing them)
331      and keep the original tile numbering. Note: compatible with old
332      W2_EXCH2_TOPOLOGY.h & w2_e2setup.F topology files.
333    
334    checkpoint61l
335    o Overlaps had been forgotten in calculating ijk keys : fixed
336    o fix cyrus makedepend for gcc 4.4
337    o experiment fizhi-cs-aqualev20:
338      switching to new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE)
339      and generate new output. Note: new output is much closer to the old
340      one (v1.8) generated with pgf77 -O2 on Mar 14 2007 than it is from
341      the previous one (v1.9) generated with pgf77 -O0 on Jun 13 2007.
342    o pkg/fizhi:
343     - change to avoid indices going deliberately over array-bounds
344     - remove unnecessary MPI stuff
345     - perpetual spring equinox with "#define FIZHI_USE_FIXED_DAY"
346     - new version of S/R GETPWHERE available with #define TRY_NEW_GETPWHERE:
347       does not go over array-bounds and therefore returns reliable output.
348     - in fizhi_driver.F & fizhi_turb.F, fix "get_alarm" calls:
349       this S/R has 4 output arguments, which are used inside "get_alarm";
350       when it is called with the same variable "ndum" in place of several
351       output arguments, this produces weird side effect inside "get_alarm"
352      (e.g., datein=dates(n) is overwritten by timein=times(n) since both
353       datein & timein, resp. 2nd and 3rd arg., are pointed to the same "ndum"
354       address) and produces error.
355    o tools/gemake2: (March 27-29 2009)
356      with option "-mpi": link *_mpi files from "MODS" dir (this is what
357      testreport does).
358    o lab_sea experiment: change from 2x1 tiles to 2x2 tiles and regenerate output
359    o pkg/seaice: fix bug in new version of S/R SEAICE_LSR.F:
360       update lab_sea.lsr & lab_sea.salt_plume results
361    o pkg/seaice:
362      Major overhaul of the LSOR solver: change discretization from original
363      finite differences to finite volume. The old routine is still in the
364      file seaice_lsr.F and can be turned on with the CPP-flag
365      SEAICE_OLD_AND_BAD_DISCRETIZATION
366      Along with this change, the discretization of the strain rates is changed.
367      The same flag turns on the old discretization in seaice_calc_strainrates.F
368      All verification experiments with seaice are affected (except for
369      seaice_exf_offline); global_ocean.cs32x15/input.icedyn recovers the old
370      results by setting the above flag.
371      Further changes involve changes in defaults:
372      - ALLOW_FLOODING is defined and turned on by default
373      - SEAICEadvSnow = .true. is now the default
374      - SEAICEadvSalt = .true. is now the default
375      - SEAICEadvAge  = .true. is now the default
376      - SEAICE_clipVelocities  = .false. is now the default
377                                         (as per J. Zhang's recommendation)
378      - B-grid, and thus not tested: SEAICE_TEST_ICE_STRESS_1/EXPLICIT_SSH_SLOPE
379        is defined, SEAICE_TEST_ICE_STRESS_1 is renamed into SEAICE_BICE_STRESS
380      - seaice_growth: replace computation of UG by a simple copy from wspeed
381    
382    checkpoint61k
383    o pkg/seaice: a few bug fixes mostly concerning the metric terms:
384      seaice_lsr: fixed a few metric terms,
385                  affects lab_sea.lsr, lab_sea.salt_plume, seaice_obcs
386                  add more debugging diagnostics
387      seaice_evp: removed superfluous many metric terms of FV discretization
388                  of stress divergence
389                  affects lab_sea, lab_sea.hb87
390      seaice_ocean_stress: removed superfluous many metric terms of FV discretization
391                  of stress divergence for non-evp solver
392                  (this part is not tested anywhere)
393      seaice_calc_strainrates: fixed a bug in no-slip boundary conditions,
394                  they were effectively only half slip
395                  affects lab_sea.hb87
396      updated all relevant verification experiments (except lab_sea//output_adm.txt
397        which was left over, but fails at level 7 & 6)
398    
399    checkpoint61j
400    o pkg/seaice: turn a few hard wired parameters into run time parameters
401    o pkg/seaice/exf/monitor: turn netcdf coordinate variable T into model
402      time in seconds as promised by the usints in seaice_monitor and exf_monitor
403    o pkg/mnc: fix the coordinate variables for multi-tile curvi-linear grids
404      that are not cubed-sphere grids
405    o pkg/seaice: fix a bug for the rare case of SEAICE_VECTORIZE_LSR
406    o pkg/ctrl:
407      fix bug in ctrl_depth_ini.F (EXCH_XYZ was applied to 2-D field xx_r_low)
408    o non-hydrostatic (calc_gw.F):
409      fix viscA4 on CS-grid + fix diagnostics: Wm_Diss & Wm_Advec
410      update output of exp. global_ocean.cs32x15.viscA4
411    o remove backward compatibility for thetaMin,phiMin
412      (replaced by xgOrigin,ygOrigin on Jan 27, 2009)
413    o pkg/exf: fix a serious bug in exf_set_uv.F: do a rotation of the
414      interpolated wind field not only for curvilineargrid=.true., but also
415      for a rotated grid (rotateGrid=.true.)
416    o pkg/exf: add capability to bypass interpolation for runoff
417      by setting yet another CPP-flag
418    o eesupp/src, B-grid exchange:
419      add simple (6 tiles, non MPI) CS exch + standard interface S/R.
420    o autodiff
421      new CPP option ALLOW_TAMC_SINGLEPREC_COMLEV
422      allows to switch to single-prec common blocks;
423      corresponding switch occurs in tamc.h, integer isbyte
424      TAF store directivs "byte" and "kind" seem equivalent;
425      Most tamc.h have been updated correspondingly.
426    
427    checkpoint61i
428    o autodiff:
429      fix autodiff_sore/_restore indices for obcs
430      (spotted by I. Hoteit, M. Mazloff)
431    o pkg/autodiff, pkg/ctrl:
432      Add flag to reduce all tapelev I/O to single-prec.
433      In data.ctrl set
434        doSinglePrecTapelev = .TRUE.
435    o model/src/ini_curvilinear_grid.F, new grid-file format without EXCH2:
436      check in hack for SX8 compiler (for dxV, dyU); remove it afterwards.
437    o pkg/shelfice: fix bug with SHELFICEconserve flag, prepare for
438      real fresh water flux (not yet)
439    o pkg/mdsio & rw:
440     - add argument & option to S/R MDS_WRITEVEC_LOC (avoid Open/Close & write-meta)
441     - add simple interface S/R to MDS_WRITEVEC_LOC in pkg/rw: WRITE_GLVEC_RX.
442    o pkg/flt:
443     - replace FLT_INIT by 3-steps standard initialization S/R: readparms,
444       init_fixed & ini_varia.
445     - clean-up & simplify linear interpolation S/R:
446       move flt_bilinear.F -> flt_interp_linear.F ; add arg. myThid.
447     - fix some indices (mainly vertical index) ; add IMPLICIT NONE.
448     - more efficient I/O, using new options of MDS_WRITEVEC_LOC S/R.
449     - add vert. coordinate & horiz. indices to output files.
450     - change vertical position in initial condition, from index to depth [m].
451     - store horizontal (decimal) indices i,j in common block (instead of coord. x,y)
452       (easier to get to a curvilinear grid) ; delX,delY no longer used.
453    o pkg/ggl90: a few modifications:
454     - fix bottom boundary condition, and interpolation of KappaE
455       near top and bottom
456     - use same set of viscosity/diffusivity for TKE/momnetum/tracer
457     - add smoothing option as in Blanke and Delecluse (1993) (--> ALLOW_GGL90_SMOOTH)
458     - add a few options for mixing-length upper limit (--> mxlMaxFlag)  
459    o rename thetaMin,phiMin -> xgOrigin,ygOrigin
460      (maintain temporary backward compatibility, until next checkpoint)
461    
462    checkpoint61h
463    o pkg/diagnostics with "periodic averaging diagnostics":
464      fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
465    o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
466    o pkg/obcs: fix loop ranges for balancing code
467    o pkg/flt:
468     - improve criteria for finding which tile owns a float.
469     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
470    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
471      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
472      with ocean biogeo)
473    o pkg/flt:
474     - do some cleaning and fix the restart ;
475     - add output.txt in flt_example/results to get this pkg tested.
476    o genmake2: add an EXTENDED_SRC option and flag.
477       for now, cannot be turned on on command line (only through genmake_local)
478    o pkg/mdsio: read/write vector:
479     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
480     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
481       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
482     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
483      (drop to 4 digits matching for grad). But this test does not look very
484      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
485    
486    checkpoint61g
487    o pkg/flt:
488      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
489       + make OPTIONS file more standard.
490      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
491      - fix _BYTESWAPIO CPP-Flag
492      - standard reading of file-parameter "data.flt"
493      - fix argument list of S/R FLT_RESTART
494      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
495    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
496    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
497      a still unfixed compiler/optimization bug
498    
499    checkpoint61f
500    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
501      update results of global_ocean.cs32x15.icedyn test.
502    o move getcon.F from model/src to pkg/fizhi.
503    o pkg/exf: add parameter for extrapolation of temp up to the surface
504       and option to prevent negative evap (in bulk_largeyeager04 only).
505    o Prather Advection scheme: fix tracer conservation for divergent flow
506      (e.g., when using NonLin Free-Surface).
507    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
508    o gmredi (Visbeck-variable-K):
509     - add more parameters to Visbeck-variable-K.
510     - use a 5 points average for dSigmaR in Visbeck-K calculation
511       (more "homogenous": same stencil and same weights as in dSigmaH)
512     - update output of ideal_2D_oce experiment.
513    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
514      (#undef REAL4_IS_SLOW)
515     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
516       coordinate variable
517     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
518       (surface forcing fields), removes some of the functionality
519     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
520     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
521       probably not all: copy _RS surface flux fields to RL field before
522       calling DIAGNOSTICS_FILL
523     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
524       real*4 (CALL EXCH_*_RS) versions.
525     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
526       (generate new output).
527    
528    checkpoint61e
529    o gmredi (Visbeck-variable-K):
530      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
531      - change computation of Visbeck-K where Slope > Smax :        
532        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
533        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
534    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
535      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
536    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
537    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
538      does not become too large (to avoid precision problems in implicit-diffusion
539      solver); update ideal_2D_oce output.
540    o pkg ggl90:
541      - in ggl90_cal.F: compute only one set of visc/diff, used to
542        step forward TKE/T/S/momentum
543      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
544        have Prandlt =1)
545    o gmredi (fm07):
546      - add lower limit on Transition layer thickness + lower limit on 1/lambda
547      - allow to set few more params from data.gmredi
548    o pkg ggl90:
549          - add missing sqrt(2) factor in computation of mixing length
550            scale in ggl90_calc.F
551            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
552    
553    checkpoint61d
554    o adjoint modifs
555      - adapt to new field rhoInSitu
556      - allow to revert from StoreDynVars2D, StoreDynVars3D
557        to individual fields
558        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
559    o store 3-D (in-situ) density in commom block (DYNVARS.h)
560     - save 1 rho computation.
561     - no longer modify T & S inland when using down_slope pkg.
562    o gad_som : allow to switch to SOM advection for T & S without corresponding
563      pickup files (using new S/R: MDS_CHECK4FILE).
564    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
565      (for useSingleCpuIO to work in multi-threaded)
566    o pkg/shelfice:
567     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
568       with SHELFICEtopoFile in data.shelfice
569     - move code for reading ice shelf topography and modifying hFacC into separate
570       subroutines of the shelfice package
571     - separate initialisation of "fixed" and "variable" variables
572     - kTopC is not (yet) replaced by kSurfC, although this is possible
573    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
574    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
575      and rename:
576      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
577      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
578    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
579    
580    checkpoint61c
581    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
582      to add mass source/sink of fluid in the interior (3-D generalisation
583      of oceanic real-fresh water flux).
584    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
585    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
586    o new pkg: down_slope
587      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
588      - presently, modify T & S inland (dwnslp_calc_rho.F).
589        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
590      - implementation for ocean in P-coords not tested.
591      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
592    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
593      (to facilitate conversion of oceanic pkg to p-coordinate).
594    o change FIND_RHO to FIND_RHO_2D :
595      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
596    o new pkg: cheapaml
597    
598    checkpoint61b
599    o exch2:
600      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
601      - no longer depend on the order sequence (N,S,E,W).
602      - 3rd exchange no longer needed (tested with 24 tiles).
603      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
604      - exch_UV_A-grid readily available (but not yet tested).
605      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
606      (both are no longer needed) in exch_uv: no effect in forward run; but
607       get truncation error differences with adjoint exch.
608    o exch2:
609     - change index-bounds storage (moved from target to local tile,
610       more intuitive this way) ; rename/remove some variables.
611     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
612    
613    checkpoint61a
614    o exch2/matlab-topology-generator:
615      fix bug in index bounds for N-S internal exchange (hard to tell if this
616      had any effect on the solution).
617    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
618      is exceeded
619    o testreport: modify syntax of awk, so that it works also with
620      awk, and not only with nawk and gawk
621    
622    checkpoint61
623    o autodiff
624      Change default for TAF usage by removing argument '-nonew_arg'
625      This changes TAF subroutine argument list (ordering of active var.)
626      Omission of this flag leads to incompatibility w.r.t. TAMC
627      To restore TAMC-compatibility, need following modifs:
628      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
629      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
630      Tested TAF version is 1.9.22
631      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
632    
633    checkpoint60
634    --->>> This is the last checkpoint for which generating the adjoint
635    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
636    --->>> by default.
637    --->>> Future checkpoints will ommit this flag by default.
638    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
639    o pkg/grdchk: Add gradient check to etan0 perturbations.
640    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
641    o pkg/autodiff: more flexibility in zeroadj.
642      model/src: modifying do_oceanic_phys.F accordingly.
643    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
644    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
645      special setup of gmredi for which the adjoint is stable
646      enough for parameter optimization.
647    o bridging the gap between eddy stress and GM.
648      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
649          along with a change in CPP option (now ALLOW_EDDYPSI).
650      -> when using GM w/ GM_AdvForm:
651          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
652          is applied either in the tracer Eq. or in momentum Eq.
653          depending on data.gmredi (intro. GM_InMomAsStress).
654      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
655      The key modifications are in model/src/taueddy_external_forcing.F
656      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
657    
658    checkpoint59r
659    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
660      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
661      fix option to read coriolis(@ cell-corner) from files with CS-grid.
662    o pkg/mnc: add some attributes to standard 1D-coordinate variables
663    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
664      mass points, when using mnc for output
665      - add runtime parameter (missing_value, missing_value_int) to override
666        default (which is the value of getcon('UNDEF'))
667    o pkg/mnc: prepare mnc for the actual use of missing values with the
668      diagnostics package: small fix in mnc_cw_readwrite.template and more
669      initialisation of never used fields
670      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
671      versions
672    o pkg/thsice/thsice_ini_vars.F added default initial values so that
673      thermodynamics sea ice solver does not blow up when some initial fields
674      are missing.
675    o move from external_forcing_surf.F to ini_forcing.F
676      the p-coord. hack consisting in using pLoad to set phi0surf ;
677      update output of tutorial_global_oce_in_p (affected @ truncation level).
678    o Freshen up a bit hs94.1x64x5, notably:
679      remove rotationPeriod and tRef=5*0. (adjoint only), and add
680      exactConserv=.TRUE.
681    o pkg/generic_advdiff:
682      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
683      applies to files where Temperature & Salinity 2nd Order moments are used.
684    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
685      this uses a dynamically allocated internal state data structure
686      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
687      and requires a fortran 90 compiler
688    
689    checkpoint59q
690    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
691       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
692    o Refresh tutorial_global_oce_biogeo, notably:
693      - change bathymetry (put back seamounts in ACC, use hFacs)
694      - change EOS (POLY3 --> JMD95Z)
695      - use Bryan-Lewis vertical diffusivity
696      - use multidimensional advection
697      - remove old virtual virtual in dic pkg, now done through ptracer pkg
698      - change a couple of parameters in dic pkg
699    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
700    o pkg/obcs: change default to OBCSfixTopo = .true.,
701      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
702      - replace "debugMode" with "debugLevel .GE. debLevB"
703    o implementation of TAF directives for gchem,cfc,dic
704    o remove "exp5" (replaced by tutorial_deep_convection).
705    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
706      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
707      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
708      --> changes results in exp4, seaice_obcs
709    o tutorial_deep_convection :
710      update the set-up and increase resolution and domain size ; start
711      from pseudo initial conditions = output at t=120mn in order to see
712      something happening when running testreport.
713    o pkg/seaice: add os7mp as an advection scheme
714                  add check for advection schemes
715                  add a flag for restoring T and S underneath sea ice
716    o pkg/my82: add netcdf-support and diagnostics
717    o thsice pkg:
718      - Now hsMax limits snow height by turning it into ice following
719        flooding scheme (and now conserving energy)
720      - Slight rewriting of the formula in thsice_calc_thick.F
721      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
722      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
723    
724    checkpoint59p
725    o gchem / dic / cfc :
726      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
727      - add new parameter files: "data.dic" & "data.cfc" ;
728      - various re-arrangement in initialisation & header file ;
729      - fix tutorial_global_oce_biogeo for multi-threaded test.
730    o pkg/dic: test for "pickup_dic" file when restarting ;
731      if no pickup-file, can restart with a re-initialised pH (same as it did
732      before) providing pickupStrictlyMatch is set to False.
733    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
734      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
735    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
736      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
737    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
738     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
739       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
740    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
741       scheme to use for vorticty-term ;
742     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
743       (with default selectVortScheme, return to original discretisation)
744     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
745    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
746    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
747      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
748      also fix diagnostics VISCAHW & VISCA4W.
749    
750    checkpoint59o
751    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
752    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
753      move a few statemens out the main loop into separate loops
754    o pkg/shelfice:
755      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
756        (kg/m^2/s), does not break tests, because in verification/isomip,
757        rhoConstFresh=rhoConst (by accident)
758      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
759      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
760        new file model/src/seawater.F, so that they are available for all pkgs.
761      - convert potential temperature into in-situ temperature. This changes the
762        isomip tests => update tests
763    o add a flag writePickupAtEnd (default=true) to be able to suppress
764      writing a pickup at the last timestep
765    o tools/mpack-1.6 :
766      - disable automake (not working) and autoconf (not needed).
767      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
768        also cleaner with much less compilation warnings.
769    o pkg/profiles:
770      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
771      (for "less than 32 characters name" compiler requirement)
772    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
773      conditions that have a different sampling frequency than S/T/U/V obcs
774    o pkg/diagnostics (stats-diags):
775      - fix global Min/Max in case 1 processor get only empty tiles
776    o genmake2: replace (4 times)
777         make genmake_tc_1.o >> genmake_warnings 2>&1
778      with
779         COMM="$CC $CFLAGS -c genmake_tc_1.c"
780         echo $COMM >> genmake_warnings
781         $COMM >> genmake_warnings 2>&1
782      to make genmake2 always see the value of CC as specified in the optfile.
783    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
784      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
785      - modify verification advect_cs test to test SOM-advection on CS-grid.
786    o pkg/ctrl:
787      - Rewrite of ctrl_map_ini_ecco.F,
788        introducing a generic routine (ctrl_map_ini_gen.F).
789      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
790    
791    checkpoint59n
792    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
793      number in dedicate array "hdiag":
794      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
795        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
796      - many small changes (integer format) for large number of diagnostics
797      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
798        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
799    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
800      usingSphericalGrid, this allows to define the rotated grid coordinates
801      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
802      geographical coordinates according to the inverse of the rotation defined
803      by the Euler angles, so that Coriolis parameter and online-interpolation by
804      exf works with the geographical coordinates on XC/YC/XG/YG.
805      Naturally, this feature does not work with all packages, so some
806      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
807      profiles), because there the coordinates are assumed to be regular
808      spherical grid coordinates.
809    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
810      - introduce isopycnal diffusion coefficient control.
811    o tools/adjoint_options:
812      - additional control vector components.
813    o pkg/mnc: have mnc create marginally meaning full coordinate variables
814      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
815    o pkg/mypackage:
816      - add example of read/write pickup for state-var ;
817      - add entry points to the main code for state-vars diags & write-pickup.
818    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
819      transitions for useExfYearlyFields
820      - add new subroutine that determines the file to read from for
821        use*YearlyFields = .TRUE. and .FALSE.
822      - add a verification experiment to global_with_exf that tests
823        useExfYearlyFields with USE_EXF_INTERPOLATION defined
824    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
825      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
826      subroutines (which could be generated from a template, because they are
827      almost identical), for now they are included in obcs_prescribe_read.F for
828      simplicity
829    o pkg/exf:
830      - add a little more diagnostic to exf_interp_read (in analogy to
831        mds_read_field, can be turned off with debugLevel < debugLevA=1)
832      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
833        ugly but fast by unrolling short inner loops, inserting a unroll=8
834        directive in routine lagran, and splitting a loop and making do while the
835        outermost loop (the latter requires the intoduction of index arrays)
836    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
837    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
838      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
839    o verification/seaice_obcs: updated for restart test and latest options
840    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
841      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
842      for now this is only available for the C-grid code and also within
843      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
844    
845    checkpoint59m
846    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
847      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
848    o gad_som : fix flux output (& diagnostics) to have same units as other  
849      advection scheme fluxes (was previously multiplied by deltaT).  
850    o added verification/seaice_obcs both to test seaice open boundaries
851      and to provide an example matlab scrpt for generating them
852    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
853    o pkg/salt_plume: clean up salt_plume_frac.F to
854      remove redundancy in PlumeMethod 1 and 4
855    o pkg/kpp: added saltplume diagnostics
856    o pkg/obcs and pkg/seaice:
857      - do not set uice and vice to zero when OB*icefile are unspecified
858      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
859      - moved seaice tracer obcs after call to seaice_growth
860    o pkg/salt_plume: added various options for salt plume depth
861      criterion and for vertical distribution of the salt
862    
863    checkpoint59l
864    o pkg/ptracers: new version of ptracers pickup:
865      read meta file and write only fields which are needed to restart.
866      ( same logic as main pickup file ; also using pickupStrictlyMatch )
867    o pkg/seaice:
868      - add timescale for melting due to warm mixed layer as a means of
869        setting SEAICE_availHeatFrac more conveniently
870      - add a CPP-flag/runtime parameter check for flooding algorithm
871      - reformulated availHeat in seaice_growth.F to be independent of AREA
872    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
873      unit changes
874    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
875    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
876      SX vector computer.
877    o pkg/seaice:
878      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
879        seaice forcing fields can now be read only through pkg/exf
880      - removed some unused halos
881    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
882    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
883      or U/VICE from U/VWIND before computing U/VSTRESS
884    
885    checkpoint59k
886    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
887      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
888    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
889      all experiments pass when compile with un-initialised var. checking option.
890    o added pkg/salt_plume
891    o script to test restart (for now, in MITgcm_contrib/jmc_script)
892    o pkg/seaice: new read/write pickup version.
893      read meta file and write only fields which are needed to restart.
894      ( same logic as main pickup file ; also using pickupStrictlyMatch )
895    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
896    o lab_sea.hb87: modify the domain & update output.hb87.txt :
897      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
898      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
899      process. Fixed here by closing the domain at the Northern boundary.
900    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
901    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
902      a set of consecutive levels in/from a 3-D array.
903    o pkg/ptracers:
904      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
905      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
906    
907    checkpoint59j
908    o in pkgs: dic, obcs, offline, rbcs:
909      standard way to compute coeff. for time interpolation between 2 time reccords
910      which retains full precision (& make results less dependent on compiler).
911      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
912    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
913      packages instead of reading ice cover and wind speed separately
914    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
915     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
916      to allow to compile customized code before the update)
917    o cleaning-up:
918      - fix CPP instruction syntax in pkg/obcs
919      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
920        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
921      - fix some threads issue in IO parts.
922    o pkg/dic:
923      - add tons of "_d 0" (--> much better testreports !)
924       and then update outputs of tutorial_global_oce_biogeo
925    o pkg/mom_fluxform:
926      add a special version of momentum advection intended to conserve momentum
927      next to a bathymetry step or a coastline edge. (default = off = #undef)
928    o new read/write pickup version:
929      - for now, only implemented for main (mdsio) pickup file.
930      - write out only what is needed to restart; merge pickup_nh , pickup_ph
931        and main pickup together.
932      - read meta file; read only what is needed to restart; stop if a field
933        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
934        if it make sense (even if the restart is not perfect).
935      - if no meta file, assume that pickup to read corresponds exactly to
936        a pickup that would currently be written.
937      - read pickup written in the old format (until checkpoint59i) if it
938        recognizes an old meta file (no field-list).
939      - add a meta file in exp. which starts from a pickup: 2 cases:
940        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
941         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
942        b) a meta file describing the content of the associated pickup file
943         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
944    o pkg/mdsio & pkg/rw:
945      - new routine to read a meta file ; new set of routine to read
946        Multiple-fields file (with meta file).
947    o added open boundary conditions capability for seaice
948        HSNOW, HSALT, UICE, and VICE
949    
950    checkpoint59i
951    o adjoint:
952      * fix multiDimAdvection adjoint
953        (partial recomputation problem by TAF for fVerT(:,:,kDown)
954        and comlev1 size definition (maxpass vs. max. number of tracers)
955      * verification/global_ocean.90x45x15 adjoint now tests
956        NLFS and multiDimAdvection using DST3 (=30)
957      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
958    o pkg/kpp: add "_d 0" to real constant (if missing);
959      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
960      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
961    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
962      for internal parameters related to restart process (formerly from PARAMS.h)
963      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
964    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
965      as argument. (only atm2d & obcs write_pickup have not yet been updated)
966    o pkg/monitor:
967      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
968      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
969      - account for deep Atmosphere factor and density factor (anelastic)
970    o added open boundary conditions capability for seaice HEFF and AREA
971    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
972      thermodynamics
973      - requires a little reorganization, which affects the testreport results
974        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
975        so that now the conservative form is tested
976      - add a few comments
977    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
978    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
979    o add new diagnostics to seaice: advective, diffusive fluxes (only for
980      multidim-advection, for scheme 2 they are not filled) and transports,
981      thermodynamic growth rates
982    o change units of EmPmR (inside the code, + within coupling interface)
983      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
984      Affects results @ truncation level (cg2d match) and update output of
985       experiments: lab_sea(6), global_ocean.90x40x15(10),
986      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
987      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
988      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
989      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
990    
991    checkpoint59h
992    o pkg/exf:
993      - improve vectorization by moving if-statement out of loops in
994        exf_mapfields, exf_radiation
995      - exf_bulkformulae.F: introduce 2D fields and vectorize code
996    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
997    o testreport:
998      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
999        monitor & update offline_exf_seaice exp. output.
1000      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
1001    o pkg/seaice:
1002      - bug fix in the evp solver: boundary conditions were affected be
1003        masking of zMax/zMin (changes results)
1004      - minor bug fix in boundary conditions in seaice_calc_strainrates
1005        (changes results for no_slip)
1006      - seaice_lsr.F: make interpolation of eta dependent on boundaries
1007      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
1008      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
1009        stress formulation and no-slip boundary conditions
1010    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
1011      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
1012    o pkg/seaice: a first HSALT time stepping equation has been checked in
1013    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
1014      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
1015      without requiring DO-IF statements
1016    o pkg/thsice:
1017      use continuous power-law function for partition of energy between lateral
1018      melting/freezing and thinning/thickening ; old code using step function
1019      still available with #undef THSICE_FRACEN_POWERLAW
1020      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
1021    o testreport: change AD testing : check against results/output_adm.txt
1022      using same scripts as for forward test.
1023    
1024    checkpoint59g
1025    o adjoint testing: in preparation for changing testreport:
1026      - output format: cost and grad written on separated lines
1027      - ad output results in directory "results" (instead of "results_ad")
1028    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
1029    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
1030    o pkg/ecco: allow user defined cost function contributions
1031    o testreport:
1032      Allow to choose (per experiment) the list of tested output variables
1033       and the main variable (used to issue a pass/FAIL ) ;
1034      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
1035      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
1036      Also modify printing of summary:
1037       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
1038       b) echo the list of tested variables in the individual summary.txt of
1039          each experiment.
1040    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
1041      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
1042      (but still depend on the tile decompostion of the domain).
1043    o pkg/seaice: change a discretization detail to make the B-grid code
1044      "more symmetric". This change is likely to remove all "ridges/leads" that
1045      where quasi-aligned with the grid in B-grid solutions. It may also be
1046      the solution to the stress coupling issues with the B-grid.
1047    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
1048      remove .cvsignore from input dir. (since testreport no longer run here).
1049    o pkg/thsice:
1050     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
1051     - fix reshaping of sea-ice just after advection:
1052       melt all the ice only if ice-volume is too small.
1053     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
1054       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
1055     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
1056    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
1057      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
1058    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
1059      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
1060      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
1061      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
1062      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
1063      -> update output.txt
1064    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
1065     this affects truncation error: -> update output.txt of exp:
1066      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
1067      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
1068    
1069    checkpoint59f
1070    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
1071    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
1072      a bounded range (in forward mode)
1073    o pkg/ecco, ctrl, autodiff and mom_common:
1074     internal parameter controls, completements of implementations
1075    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
1076    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
1077      (not seem any difference in testing results).
1078    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
1079       at face corners.
1080    o pkg/generic_advdiff:
1081     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
1082      loop range indices for computing vertical advection tendency
1083      and do the calculation in the interior only (no overlap) ;
1084      for now, only implemented for SOM advection (to save CPU time).
1085     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
1086    o exch2 adjoint
1087      First set of changes:
1088      - add exch2 hand-written adjoint templates
1089      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
1090        This will require cleanup in pkg/autodiff/*.F
1091        (changed routines currently kept separate in verif. code/)
1092      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
1093        that used to hide exch2 or cubed-sphere specific code
1094        (commented via 'cph-exch2')
1095    o pkg/seaice
1096      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
1097    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
1098       output of global_ocean.cs32x15.thsice .
1099    
1100    checkpoint59e
1101    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
1102      for B-grid vector (not yet tested) and C-grid vector (<- only used
1103      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
1104    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
1105      (#ifdef ALLOW_SALT_PLUME)
1106    o gather_2d/scatter_2d: removed halo regions
1107    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
1108      scheme and the corresponding test case (under front_relax dir). For now,
1109      only available with Skew-flux form and not yet tested in realistic set-up.
1110      adjoint: store directives updated, but gradient checks deteriorated,
1111      so maybe GM/Redi adjoint is now broken.
1112    o seaice adjoint
1113      * add AREA, HEFF, HSNOW as control variable
1114        (should not change lab_sea results)
1115      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
1116    o pkg/seaice:
1117      * added computation of saltFlux in seaice_growth;
1118        For time being, sea ice salinity is assumed constant
1119        contribution of snow flooding to freshening of sea ice is neglected.
1120        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
1121        defaults to 0.0 in order to maintain backward compatibility.
1122        Typical values for SEAICE_salinity are 4 to 10 g/kg.
1123      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
1124      * added SEAICE_availHeatFrac, which specifies fraction of surface level
1125        heat content used to melt or grow ice
1126      * commented out cap of HICE: it helps keep ice thinner
1127      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
1128      * applied OBCS T/S mask to HEFFM sea ice mask
1129    
1130    checkpoint59d
1131    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
1132     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
1133     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
1134    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
1135     and change default value of parameter "GM_Small_Number";
1136     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
1137       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
1138       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
1139    o pkg/ecco: cost function when applying pkg/smooth to controls
1140    o pkg/ctrl: add forcingPrecond run time parameter
1141    o pkg/seaice:
1142     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
1143     - fix bug in metric terms of u-equation in LSR solver (implicit part),
1144       changes verification/lab_sea
1145     - rearrange implicit part of u-equation in LSR solver to make it easier to
1146       read, understand, and debug. This causes changes at the truncation level.
1147     - fix (serious) bug in the boundary conditions (sign error in the implicit
1148       part) of the LSR solver. Changes all LSR results.
1149     - fixed problem with HSNOW initialization to avoid thick snow when AREA
1150       is initilized with small values - does not change lab_sea results.
1151     - added HsnowFile initialization capability
1152    o pkg/smooth: addition to model/src and pkg/ctrl so allow
1153     initialization of pkg/smooth and application to control vector
1154    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
1155    o dependencies: pkg/profiles requires pkg/cal
1156    o pkg/profiles:
1157     - added option ALLOW_PROFILES_GENERICGRID
1158         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
1159         that interpolation information (grid points and coefficients) is provided
1160         within the netcdf input files.
1161         -> sample matlab scripts can be found in MITgcm_contrib/gael
1162         that allow you to prepare netcdf input files.
1163     - also modified: cleaner include statements, cleaner error print statements,
1164       cleaner stops when error, and more tests of the netcdf input files consistency.
1165    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
1166    o pkg/seaice:
1167     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
1168       requires a new routine: seaice_diagnostics_fill.F
1169     - make sure that seaice does not move if not forced (pressure replacement
1170       method, Hibler and Ip, 1995), changes results
1171     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
1172     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
1173       It is turned off by default (=-1.), because it changes the results.
1174     - make it possible to read AREA from a file, too.
1175    
1176    checkpoint59c
1177    o add S/R and diagnostics for oceanic mixed-layer depth
1178    o move GMRedi call after all vertical mixing schemes (including KPP)
1179    o pkg/thsice:
1180     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
1181      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
1182    o pkg/obcs:
1183     - bug fix for balance code
1184    o pkg/seaice:
1185      - allow values of SEAICE_elasticParm > 1
1186      - add new parameter SEAICE_evpTauRelax as an alternative
1187        to SEAICE_elasticParm
1188      - make lsr boundary conditions free slip (by default), changes result
1189      - add code for no slip boundary conditions for lsr
1190      - set minimum of zeta to zero (and not 4e8) (changes results)
1191      - add a cap on AREA after advecting AREA if seaice_growth is not called
1192    o change calculation of Visbeck K:
1193      - no longer depend on tapering scheme; instead, compute slope (limited
1194        by GM_maxSlope). this is equivalent to what was comuted before with
1195        clipping or linear tappering.
1196      - fix vertical averaging (wrong by 1/2 level)
1197      - leave the old version (but will not be maintained) within
1198        #ifdef OLD_VISBECK_CALC / #endif
1199      - update output of exp. ideal_2D_oce
1200    o change error catch in calc_r_star to improve vectorization
1201    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
1202      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
1203    o adjoint:
1204      Re-organized adjoint checkpointing according to Matt Mazloff
1205      (but with modifs/completions/cleanups)
1206      Storing is now bundled into large arrays to optimized I/O
1207      (and second step in cleanup of the_main_loop)
1208    
1209    checkpoint59b
1210    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
1211      - export/import (between ocean & coupler) fields needed for ocean DIC.
1212    o pkg/seaice:
1213      - get rid of three more exchanges seaice_calc_viscosities (required
1214        different loop boundaries in seaice_lsr and seaice_ocean_stress)
1215      - bug fix in seaice_ocean_stress (update of lab_sea required)
1216      - reduce loop boundaries to necessary minimum also in seaice_evp
1217      - go back to the old way of computing deltaC/Z as the adjoint likes that
1218        better
1219    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
1220      passive tracer to an Age Tracer) + update output.txt
1221    o pkg/exf:
1222      - implement A-grid / C-grid selection for wind-stress input files.
1223      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
1224      for now, in exf_bulk_largeyeager04.F only :
1225      - change implementation for case where windspeed + 2. components wind-stress
1226        are read-in. AND use rhoConstFresh to convert evap.
1227    o pkg/seaice:
1228      - use correct EXCH_UV for wind-forcing (on A-grid).
1229      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
1230        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
1231    o pkg/exf:
1232      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
1233      EXF_INTERPOLATION:
1234      - merge global_with_exf/code version of exf_interp_read.F
1235        to the main code ;
1236      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
1237        reading the file ; Important: This options needs to be defined to recover
1238        previous code.
1239        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
1240      - no longer loose real*8 precision along the way when using exf_iprec=64.
1241    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
1242      - change discretisation of evp-solver in order to avoid another exchange
1243        (changes lab_sea) and clean up a little
1244      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
1245        help the adjoint (this also changes the results slightly)
1246      - add a few "_d 0" where they had been missing in seaice_evp.F
1247      - cleaning up: remove unused seaice_calc_rhs.F
1248    o pkg/exf: some cleaning-up:
1249      - change various "constants" into runtime parameters
1250      - cleaned-up Large&Yeager04 routine which should eventually
1251        replace exf_bulkformulae.F (changed names of S/R and CPP)
1252        and merged various ALLOW_ATM_WIND options
1253     only used with thsice pkg (in thsice_get_exf.F):
1254      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
1255        which are used when useStabilityFct_overIce=TRUE (= the default)
1256      - change default values of ice & snow emissivity and scale downward LW
1257        by ice & snow emissivity.
1258    o pkg/thsice:
1259     fix few little problems, in thsice_calc_thickn.F:
1260      - growth vertically (and not laterally) if iceFrac == iceMaskMax
1261      - melt only laterally if hIce < hThinIce (as the comments say)
1262      and in thsice_extend.F:
1263      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
1264      - start to form ice as soon as the minimum ice-volume is reachable.
1265     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
1266      and cpl_aim+ocn
1267    o pkg/kpp
1268     - move computation of surface related input fields to KPP into a new
1269       subroutine kpp_forcing_surf.F
1270     - remove wrong (within bi,bj loops) EXCH calls.
1271     - little cleaning (add argument myThid in last position, cvs header ...)
1272     - for now, fix conservation problem by exchanging KPPviscAz (may not
1273       be the best fix)
1274    o pkg/seaice
1275     - check for inconsistent evp parameter/cpp-flag combination
1276     - remove leftover errIO flat for obsolete name list error handling
1277    o OpenAD
1278     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
1279    
1280    checkpoint59a
1281    o pkg/seaice: some parameter clarifications and a little bit of clean up
1282    o pkg/thsice: rename run-time parameters:
1283       himin       -> hIceMin
1284       himin0      -> hThinIce
1285       hihig       -> hThickIce
1286       i0          -> i0swFrac
1287       transCoef   -> bMeltCoef
1288       frac_energy -> fracMelting
1289      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
1290       with default values (for now) that do not change the results.
1291      remove old version of thsice vars advection in pkg/seaice.
1292    o in FFIELDS.h:
1293      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
1294      - make pLoad & sIceLoad always available (but still only used if
1295         ATMOSPHERIC_LOADING is #define).
1296    o pkg/kpp: replaced _KPP_RL with _RL
1297    o bug fixes for vertical diffusivity computations when both KPP and
1298        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
1299        are no longer updating the vertical diffusivity array
1300        (passed as argument) but are (re-) setting those arrays.
1301    o pkg/seaice: fix bug in evp solver, while doing that
1302      - change (improve?) discretization of stress computations for both
1303        cgrid-lsr and evp solver
1304      - add a new routine to compute strain rates
1305      - the above changes lab_sea results
1306      - add no slip conditions for evp solver (off by default), lsr-version
1307        may follow
1308      - fix exchange for shear at Z-points (does not change lab_sea)
1309      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
1310        (to force the user to pick a time step since there is not "safe" way
1311        of choosing it)
1312      - add principal stress diagnostics
1313      - rearrange fields for evp a little to avoid having to call a: too many
1314        exchanges and b: exchanges for stress trensor components which we do
1315        not have.
1316      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
1317        of evp, complete rewrite for lsr case (latter is does not yet work
1318        in all cases)
1319    o pkg/kpp: add code to have mixing in shelf ice caverns
1320      - add myThid to all kpp routines (long overdue)
1321    
1322    checkpoint59
1323    o pkg/exf:
1324      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
1325        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
1326      - move exf header files from lower_case.h to UPPER_CASE.h ;
1327        add missing cvs Header & Name
1328      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
1329      - add namelist param. selectStressGridPosition, exf_monFreq
1330      - retire many _CLIM routines, and remove data.exf_clim
1331        + params moved to data.exf
1332        + climsst, climsss now handled by exf_set_gen, i.e.
1333          climss?period=0 refers to constant field,
1334          climss?period=-12 to monthly forcing
1335      - split up namelists in data.exf
1336    o pkg/seaice:
1337      - remove seaice_exch and seaice_exch_uv
1338      - remove superfluous exchange of theta
1339      - add myThid to seaice_budget_ocean/ice
1340      - add new interface for atmospheric wind forcing (C-grid only)
1341        + new routine
1342        + two new field (taux, tauy for stress over ice)
1343        + removed one global field (DAIRN) for C-grid case only
1344    o pkg/thsise
1345      - 2nd set of modifs for thsice adjoint in conjunction with exf
1346    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
1347    
1348    checkpoint58y_post
1349    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
1350      vertical diffusivity, similar to that in MOM4; turned on using
1351      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
1352      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
1353    o Added capability for 3D specification of background vertical diffusion
1354      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
1355      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
1356      "data" file that contains the 3D vertical diffusivity coefficients.
1357    o ice dynamics (pkg/seaice) with thsice thermodynamics:
1358      - add code within pkg thsice to advect & diffuse sea-ice fields
1359      similar to (and will replace) what has been added in  seaice_advdiff.F,
1360      but: - conserving Mass, Heat & Salt.
1361           - better when using non-linear advection scheme (not yet fully tested)
1362           - can also be used in atmospheric set-up (for now, only the diffusion).
1363    
1364    checkpoint58x_post
1365    o IO option for global-file compact format:
1366      - add options when generating topology (utils/exch2/matlab-topology-generator)
1367      - add I/O capability (pkg/mdsio).
1368      - adapt utils/matlab/rdmds.m to read this format.
1369      for now long-line format not yet supported by pkg/mdsio (& exch2).
1370    o shelfice: add a few diagnostics
1371    
1372    checkpoint58w_post
1373    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
1374      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
1375      (and replace horiVertRatio in NH code).
1376      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
1377                         and tutorial_plume_on_slope (sensitive to truncation)
1378    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
1379      directly to drive seaice model (C-grid only)
1380    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
1381     - reintroduce computation of wind from stress,
1382     - compute tau (in exf_bulkformulae.F) from windstress averaged to
1383       mass points to avoid tau = 0
1384     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
1385    o rdmnc.m: make it work with "global" files created with gluemnc
1386    o rdmnc.m : some improvements in dealing with singleton dimension
1387      (tested on all testreport mnc output files).
1388    o genmake2: disable pkg/profiles if netcdf test fails.
1389    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
1390    o move call to cal_readparms up to make calendar parameters/variable available
1391      to all packages
1392    
1393    checkpoint58v_post
1394    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
1395      useDynP_inEos_Zc tested.
1396    o pkg/exf: changes to properly interpolate/mask/scale initial fields
1397    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
1398      and portions thereof.  See read_cs.txt for description and examples.
1399    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
1400      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
1401      following the great-circle arc between those 2 points.
1402    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
1403      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
1404    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
1405     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
1406     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
1407     - still needs work (not working with some options ; efficiency to improve)
1408       and serious testing.
1409     - use this scheme for temperature & salinity in 2 advection test exp.:
1410       advect_xy & advect_xz, respectively.
1411    
1412    checkpoint58u_post
1413    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
1414    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
1415    o testreport: add option "-skipdir" to skip some test.
1416    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
1417      momentum calculation.
1418    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
1419    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
1420      remove checkpoint.F and the_correction_step.F (no longer used);
1421      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
1422    o add option (linFSConserveTr) to correct for tracer source/sink due to
1423      Linear Free surface
1424    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
1425    o pkg/thsice: fix reading mnc-pickups
1426    
1427    checkpoint58t_post
1428    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
1429    o pkg/mdsio:
1430     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
1431       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
1432       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
1433     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
1434     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
1435       either MDS_READ_FIELD or MDS_WRITE_FIELD )
1436     - new S/R (to replace MDSWRITEMETA), which allows to write more
1437       informations (variable names, time ...) to meta files.
1438     - modify rdmds.m to give back the meta file content.
1439    o pkg/diagnostics: change vertical interpolation to be safer, and more
1440       flexible (define p-levels to interpolate to in data.diagnostics);
1441      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
1442       diagnostic pointer.
1443    o pkg/seaice: more cleaning up of seaice_growth, added many comments
1444    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
1445    o fix multi-category seaice:
1446     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
1447       SEAICE_MULTICATEGORY
1448     - fix short wave heat flux
1449    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
1450       and allow to use EVP solver. Change forward lab_sea: test both EVP
1451       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
1452    o Initial check-in of lab_sea adjoint
1453      (very similar to natl_box_adjoint/code_seaice)
1454      * used C-grid and EVP solver
1455      * used KPP, GM/Redi
1456      * uses inAdExact=.TRUE.
1457      * gradient checks fail for both ADM and TLM
1458        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
1459        f.d. gradients actually seem more problematic than ADM, TLM gradients;
1460        issue is related to forward mismatch between g77 an ifort
1461    o pkg/seaice: overhaul of thermodynamics
1462     - growth.F and groatb.F are replaced by new routine seaice_growth.F
1463     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
1464     - move a few global fields out of SEAICE.h into seaice_growth.F and
1465       make them 2D (FICE/QNETO/ ...)
1466     - remove FO (it is the same as QNETO)
1467     - introduce a few local fields to avoid modifying external fields such
1468       as atemp, etc.
1469    
1470    checkpoint58s_post
1471    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
1472      changed exf_set_gen.F so that
1473        genperiod=0 means input file is one time-constant field and
1474        genperiod=-12 means input file contains 12 monthly means
1475    o CG2D: use pre-computed solver main-diagonal (stored in common block);
1476      this affects truncation error ; generate new output file for exp. which
1477      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
1478        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
1479        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
1480        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
1481        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
1482        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
1483    o start implementation of deep-atmosphere and anelastic formulation
1484    o verification: remove 2nd copy of input files and use script "prepare_run"
1485      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
1486    o mom_common/vecinv/fluxform: fix a few initialisation isssues
1487    o profiles: fix for multithreaded case
1488    
1489    o diagnostics: rename few diags:
1490      s/'PRESSURE'/'RCENTER '/g
1491      s/'TICE    '/'oceFreez'/g
1492      s/'TAUX    '/'oceTAUX '/g
1493      s/'TAUY    '/'oceTAUY '/g
1494      s/'SWFLUX  '/'oceQsw  '/g
1495      s/DIFx/DFxE/g
1496      s/DIFy/DFyE/g
1497      and add few ocean-forcing diagnostics:
1498      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
1499    o modifications to pkg/seaice/growth.F and budget.F, which change results of
1500      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
1501      as actual snow thickness.  It now refers everywhere to effective snow
1502      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
1503    
1504    checkpoint58r_post
1505    o modifications to pkg/seaice/growth.F, which change results of
1506      lab_sea experiment: fixes pertain to melting snow over open water, to
1507      masking EVAP under sea ice, and to using the correct AREA variable for
1508      computations of EVAP, PRECIP, HSNOW, and GHEFF
1509    o add ability to read bathy, salt, and theta using MNC (off by def)
1510    o add flooding algorithm and advection of HSNOW for pkg/seaice;
1511      both are turned off by default and do no change any results
1512    o seaice advection with pkg/thsice: a step toward the use of non-linear
1513      advection scheme, but #ifdef or commented out for now (requires more EXCH).
1514    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
1515      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
1516      in natl_box (affects results @ truncation level: update output.txt)
1517    o multi-threading and IO:
1518      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
1519      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
1520        (needed to work with SingleCpuIO): tested in all verif. exp.
1521    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
1522      affects the results (but none of the verification test uses this scheme).
1523    o Adding some pkg/diagnostics capability to pkg/seaice
1524      (will certainly be subject to changes)
1525    o ctrl: adding new control variables:
1526      lwflux, lwdown, evap, snowprecip, apressure, runoff
1527    
1528    checkpoint58q_post
1529    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
1530      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
1531      high_res_cube configuration by 4% on Columbia.
1532    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
1533      add (in global_with_exf/code) a version of EXF_INTERP_READ without
1534      dynamical allocation (seems to work in multi-threaded).
1535    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
1536      single CPU io) so that TAF does not have to see EESUPPORT.h
1537    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
1538    
1539    checkpoint58p_post
1540    o obcs: stop if obcs is used with useCDscheme = .true.
1541    o shelfice:
1542     - fix a sign error so that no slip at shelfice interface works
1543     - remove stop for combination non-hydrostatic code and shelfice. That does
1544       not mean, that the results are correct, but at least they are numerically
1545       stable
1546    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
1547    o added adjoint exch routined for all exch*3d* routines
1548      and updated flow directives
1549    
1550    checkpoint58o_post
1551    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
1552      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
1553    o change controling S/R for writing pickup file (new S/R do_write_pickup)
1554      and clean-up reading/writing of pickup files.
1555    o fix local version of read/write pickup (NH part) in rotating_tank/code
1556    o simplify EXCH interface:
1557     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
1558     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
1559    o added the regrid package
1560    o shelfice:
1561     - add a simple boundary layer scheme to reduce noise
1562     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
1563    
1564    checkpoint58n_post
1565    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
1566       local variable (not in common block).
1567    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
1568      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
1569      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
1570        to work with SingleCpuIO.
1571    o add "_d 0" to real constant of pkg/cfc subroutines ;
1572       update exp. cfc_exemple & tutorial_cfc_offline output files.
1573    o multi-threading and IO:
1574      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
1575        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
1576      - barrier before and after reading.
1577      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
1578      - avoid using MDS_WRITELOCAL for LAND pkg output.
1579      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
1580        common-block variables ; Allows multi-threading with master-thread IO.
1581    o change default MAX_NO_THREADS from 32 to 4 ;
1582      and stop cleanly when MAX_NO_THREADS is too small.
1583    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
1584    
1585    checkpoint58m_post
1586    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1587       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1588    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1589       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1590       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1591    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1592        add MITgcm_tutorials (= code + all the tutorials)
1593    o ecco, option to compute cost for total ssh (mean+anom)
1594    o consistent with addition of ptracer and ssh in pkg/profiles
1595    o profiles: adding ptracer and ssh
1596    o testreport: change multi-test output-file name
1597      (from output.txt.{name} to output.{name}.txt)
1598    o profiles: now ok for mutli-tiles case
1599    o seaice: add 4 parameters for different advection schemes for area,
1600      (effective) seaice thickness, enthalphy, and snow height. Their default
1601      is the standard parameter SEAICEadvScheme
1602    o calc_gw:
1603     - add cosFacU in zonal viscous flux (harmonic.visc.).
1604     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1605       of tutorial_plume_on_slope.
1606    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1607    o calc_gw: true flux-form, account for horizontal grid spacing.
1608      update rotating_tank results, but not plume_on_slope (affected at
1609      truncation level, 11 digits).
1610    
1611    checkpoint58l_post
1612    o calc_gw:
1613     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1614     - remove side-drag for now (need to fix it); update plume_on_slope results.
1615     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1616    o commit code to make SST/SSS weights spatially variable
1617      (based on either variable in-situ or variable initial T/S weights)
1618    o pkg/ecco:
1619      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1620        now based on horizontally varying weights wthetaLev, wsaltLev
1621      * cost_averagesflags now returns year indices in addition to day, month
1622      * sflux balance is performed on annual basis
1623        (sflxumm, sfluxmm2, bal_sfluxmm)
1624      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1625        including separate counting and multipliers
1626    o pkg/rbcs
1627      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1628    
1629    checkpoint58k_post
1630    o testreport:
1631     - always build in dir. "build" (if not there, mkdir build instead of building
1632       & running in input)
1633     - run in dir run (if it exists), in build otherwise.
1634     - call prepare_run (if input/prepare_run exists)
1635     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1636    o pkg/exf modifications to interpolation and rotation routines for more
1637       reasonable treatment of North Pole singularity: for tracers North Pole
1638       value is set to northernmost zonal-mean value, for zonal velocity it is
1639       set to zero, and for meridional velocity it is set to northernmost value.
1640    o pkg/exf/exf_check_range.F
1641     - add tile index to diagnostics and move stop statement to the very
1642       end of the routine.
1643    o pkg/diagnostics: (diagnostics_main_init.F)
1644      define title of isomorphic variables according to the current config.
1645    o pkg/thsice with pkg/seaice dynamics:
1646    - fix domain of computation (interior only, required for exf) and do exchanges
1647    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1648    o towards a standard way of dealing with multi-threading in MONITOR
1649      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1650    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1651       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1652    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1653    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1654    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1655       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1656    o tracer advection:
1657     - clean-up and simplify calc_common_factors.F
1658     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1659       advection subroutine (but still not used within DST advection S/R)
1660    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1661    
1662    checkpoint58j_post
1663    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1664      from file (collects calls previously in FORWARD_STEP)
1665    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1666    o adjoint store dir. adjusted accordingly
1667    o genmake2
1668      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1669    
1670    checkpoint58i_post
1671    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1672      on wind stress (SEAICEstressFactor defaults to 1.)
1673    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1674      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1675    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1676      on CS-grid: no longer loosing mass.
1677    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1678    o pkg/ggl90: fix sloppy output and fix a bug
1679    o pkg/seaice: added SEAICEuseEVPpickup parameter
1680      - Set to false in order to start EVP solver with
1681        non-EVP pickup files when using SEAICEuseEVP
1682      - fix sign error in diffusion in seaice_calc_rhs
1683    
1684    checkpoint58h_post
1685    * Modifications for bottom topography control
1686      o replace hFacC by _hFacC at various places
1687      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1688      o add non-self-adjoint cg2d_nsa
1689      o update autodiff support routines
1690      o re-initialise hfac after ctrl_depth_ini
1691      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1692    * Adding verification for 5x5 box (4-layer) bottom topography control
1693    
1694    checkpoint58g_post
1695    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1696       used for mean seasonal cycle, mean diurnal cycle); add an example
1697       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1698    o pkg/ggl90:
1699      - add parameter (minimum surface kinetic energy)
1700      - fix bug (avoiding division by zero)
1701    o couple pkg/thsice to pkg/seaice:
1702      - modify advection in seaice to accomodate new scalar fields to be advected
1703      - only muliDimAdection scheme work with seaice/thsice
1704      - mapping of thsice-variables to seaice-variables, back and forth
1705      - does not break the verification experiments, but does not give the
1706        desired results either
1707    o pkg/seaice
1708      - make (default) second order advection a bit less confusing?
1709    
1710    checkpoint58f_post
1711    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1712      to pkg/seaice):
1713      - new routines thsice_map_exf and thsice_get_exf provide the interface
1714      - add an additional formal parameter to thsice_solve4temp
1715    o pkg/exf:
1716      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1717      - correct Stefan-Boltzmann constant
1718      - new parameter for longwave surface emittance
1719      - separate some stuff from exf_bulkformulae into new routines  
1720        exf_radiation, exf_wind
1721      - add new parameters and constants: longwave emissivity for ocean, ice
1722        and snow, evaporation parameters over ice
1723      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1724        either wind from stress or stress from wind
1725    o pkg/thSIce:
1726    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1727    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1728       and THSICE_CALC_THICKN
1729    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1730    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1731      to make debugging easier.
1732    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1733    o pkg/bulk_force:
1734      - clean-up comments and parameters ;
1735      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1736    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1737      generate new output for test-experiment: aim.5l_cs.thSI
1738    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1739      testreport accordingly
1740    
1741    checkpoint58e_post
1742    o SEAICE_CGRID adjoint done
1743    o R_STAR adjoint implemented.
1744      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1745      * need to sort out init. of h0facc, etc.
1746    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1747      to be able to use it in pure forward.
1748    
1749    checkpoint58d_post
1750    o upgrade simple test-experiment to tutorial example:
1751     step.1: duplicate the experiment and (step.2) will remove the old copy.
1752      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1753      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1754      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1755      tutorial_global_oce_biogeo    <- copy of dic_example
1756      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1757      tutorial_plume_on_slope       <- copy of plume_on_slope
1758      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1759      tutorial_global_oce_optim     <- empty for now (David ?)
1760      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1761     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1762    o correct a sign problem in cost_scat.F
1763    o obcs and ptracers: fix boundary conditions for advections schemes
1764      with larger stencil
1765    o thsice adjoint: start
1766    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1767      completeness
1768    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1769      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1770    o ptracers adjoint:
1771      * avoid extensive recomputatations
1772      * fix missing re-init. of gptr (missed by TAF)
1773    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1774      me to turn off the excessive output to STDOUT that this package produces
1775    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1776      and add those terms in Vector-Invariant formulation.
1777    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1778      if the control period (xx_hfluxperiod etc) is 0
1779    o in profiles pkg, clean routines and fix details
1780    o in ecco pkg, reading ssh data:
1781      fix problem in case the model does not start at iter0=0
1782    o fix mnc-pickup/restart for ptracers
1783    o new package prifiles:
1784      code to compute profile-based cost by Gael Forget
1785      (modifs in ecco, ctrl, autodiff)
1786    o Benign bug fix in initialization (spotted by M. Mazloff) of
1787      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1788    
1789    checkpoint58c_post
1790    o adjoint: finish NLFS adjoint and provide reference output in
1791      verification/global_ocean.90x40x15/results_ad_nlfs
1792    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1793      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1794      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1795      with SEAICE_CGRID defined.
1796    o move calendarDumps from "data" to "data.cal" and clean-up the code
1797      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1798    o add useEXF & useCAL flags (for now, set in hard-coded way)
1799    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1800      (were missing in NH mode, and wrong in quasihydrostatic mode).
1801      waiting for Chris updated version of calc_gw to add those CALLs.
1802    o fix bug in quasihydrostatic S/R ;
1803      add a test for this option: global_ocean.90x40x15.qshyd
1804    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1805      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1806    o add on/off flag useOffLine for package OFFLINE
1807    o seaice:
1808      - modify advection so that it works also on the C-grid
1809      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1810        problem in multi-tile runs with C-grid
1811      - add flags for clipping ice velocities and/or masking solver forcing
1812      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1813        C-grid solver
1814      - added a few comments to seaice_diffusion.F
1815      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1816        are now exclusive)
1817      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1818        required re-ordering the code a little:
1819       + make DAIRN global variable (defined in SEAICE)
1820       + move computation of the viscosities eta and zeta into a new separate
1821         routine (because I need to recompute them in seaice_ocean_stress.F)
1822    
1823    checkpoint58b_post
1824    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1825      update output.txt of exp. aim.5l_cs.thSI
1826    o various mnc cleanups and improvements:
1827      + shrink lookup tables by factor of ~4
1828      + better error reporting when running out of lookup space
1829      + able to handle longer path/file names (up to 500 chars)
1830    o adjoint:
1831      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1832      - TBD: "hidden" mom_vecinv recomp. in dynamics
1833    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1834     (allow to differentiate between forcing components using new integer flags:
1835      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1836     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1837    o ecco
1838      - enable trend removal from SSH anomaly obs.
1839    o adjoint
1840      - a fix for PmEpR when #undef EXACT_CONSERV
1841      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1842      - try to fix "hidden" recomp. in forward_step for NLFS
1843        (NLFS seems broken sometimes after I checked it in)
1844    o seaice:
1845     - add c-grid version of the dynamic solver:
1846       + three new routines that are the c-grid substitute lsr, dynsolver
1847         and ostres
1848       + put a few fields that were local to dynsolver into global common
1849         blocks, so that I can move the computation of stresses etc into
1850         seaice_lsr (saves coding but may break the adjoint).
1851     - replace more hardwired parameters by runtime parameters
1852     - add ice masks that mask the rhs of the implicit solvers where there
1853       is no ice (commented out in seaice_dynsolver, because i am not sure
1854       if this works properly), eventually this should replace the clipping
1855       of ice velocities in seaice_dynsolver to +/-40cm/s.
1856    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1857      include it only where its needed
1858    o move balancing of fluxes before the call of external_forcing_surf
1859    o seaice:
1860      - correct units of turning angles (now they are really in degrees)
1861      - move computation of GWATX/Y out of main routine into dynsolver
1862      - initialize GWATX/Y in seaice_init
1863    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1864      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1865    o seaice: add runtime flags for turning angles (default to zero)
1866    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1867      and trend from exf forcing and ctrl control adjustments
1868    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1869      (since checkpoint57x_post)
1870    o change the default rotation period to 86164.s = the Earth rotation
1871    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1872      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1873    o seaice advection: add code for choosing between the default (2nd order
1874      central differences) and multiDim advection schemes provided by
1875      pkg/generic_advdiff
1876    o seaice:
1877      - removed all references to SEAICE_GRID.h fields from
1878        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1879        (cubed-sphere configuration will change a little)
1880      - grid computations in seaice_init are obsolete now.
1881      - cleaned up code a little so that is easier to read (hopefully).
1882      - added new (better?) discretizations of default advection and diffusion
1883        (turn on with SEAICEuseFluxForm)
1884      - replace 1 in 3d global fields by kSurface in growth.F
1885      
1886    checkpoint58a_post
1887    o seaice:
1888      - bug fix in advect.F
1889    o shelfice:
1890      - separate shelfice load anomaly from pload (breaks with time
1891        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1892        Its default is 0., but it may be computed more cleverly from (unknown)
1893        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1894        done offline. A good approximation of the pressure load anomaly is
1895        necessary to avoid large initial adjustment processes underneath
1896        deep-reaching shelfice.
1897      - small fix in ISOMIP shelfice_thermodynamics
1898      - add more sophisticated thermodynamics of Hellmer (1989), this is
1899        now the default
1900      - give a few constants more intuitive names
1901    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1902      if bulk formulae are used in long integration (especially EmPmR). Turn
1903      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1904      if balancePrintMean, the imbalance that is substracted is printed to
1905      STDOUT.
1906    o fix bug (typo) in obcs_apply_eta.F
1907    o add a new package shelfice which enables us to model the circulation
1908      underneath shelf-ice with draughts of hundreds of meters.
1909     - works
1910     - to do: + include improved thermodynamics
1911              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1912                instead of new field kTopC
1913              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1914                instead of new field R_shelfIce and new code in ini_depth.F
1915                and ini_mask_etc.F?
1916              + adjust vertical mixing schemes?
1917    o seaice pkg:
1918     - add a cpp-flag to include a simple formula for a salinity dependent
1919       freezing point of sea water at the surface
1920     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1921       meridional stresses are now different (and hopefully correct)
1922    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1923       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1924       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1925    o pkg/diagnostics: add options and parameters for regional-statistics
1926       diagnostics ; define regions by reading a region-mask from a file
1927       (might add other options later)
1928    o pkg/bulk_force:
1929     - add option and parameters to use AIM surface-flux formulae.
1930     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1931       others forcing fields (defined in PARM05, parameter file "data") are loaded
1932       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1933     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1934     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1935     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1936       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1937     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1938    
1939    checkpoint58
1940    o add "--embed-source" option to genmake2 which, when the supporting
1941      tools can be compiled (as determined by genmake2) will turn on the
1942      embed_files package which then embeds the entire MITgcm source code
1943      (*.[fFhc] + Makefile) used for the build within the executable
1944      - requested by CNH but off by default
1945      - adds a paltry <9MB to the mitgcmuv executable in most cases
1946      - only writes the output when useEMBEDSRC in eedata is true
1947    o clean up 3-dim. relaxation codes:
1948      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1949      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1950      * Thanks to Tom Haine for testing!
1951    
1952    checkpoint57z_post
1953    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1954      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1955    o fix the pickup behavior for obcs in combination with ptracers
1956    o fix a bug in ptracers_external_fields_load
1957    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1958      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1959    o transfered surface NH pressure to eta field (if exactConserv).
1960    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1961         and update lab_sea output.txt file.
1962    o completing 3-dim. relaxation code: additional term
1963         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1964      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1965      * At compile time, in "EXF_OPTIONS.h" set
1966          #define  ALLOW_CLIMTEMP_RELAXATION
1967          #define  ALLOW_CLIMSALT_RELAXATION
1968      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1969          tauThetaClimRelax3Dim = 15552000.0,
1970          tauSaltClimRelax3Dim  = 15552000.0,
1971      * 3 cases:
1972          1) Use a constant-in-time 3-dim. field
1973          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1974          3) Real-time relax. to time-evolving prescribed field
1975    o Adding Laplacian-type smoothness constraint on
1976      initial and boundary (forcing) controls (ic, bc)
1977      * enable at compile-time via
1978        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1979      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1980      * Absolute scale somewhat unclear so far
1981      * no area weighting was included since no other cost term does so far
1982    
1983    checkpoint57y_post
1984    First step for a NLFS adjoint
1985    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1986    o new init. routines for calc_r_star, calc_surf_dr
1987    o still need to deal with ini_masks_etc
1988    o testreport seemed happy
1989    checkpoint57y_pre
1990    
1991    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1992    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1993    o add new offset feature to offline pkg (plus minor cleanup)
1994    o cfc fixes for final year of integration
1995    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1996      be in GCHEM_OPTIONS).
1997    
1998    checkpoint57x_post
1999    o fix testreport Pb in multiple test experiment.
2000    o cleanup our namelist syntax in verification:
2001      - make it more F95 standards compliant (some work still needed)
2002      - allows the vast majority of our tests to work with gfortran
2003    o Non-Hydrostatic:
2004     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
2005     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
2006    o Allow to apply AB on T,S rather than on AB(gT,gS):
2007     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
2008     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
2009       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
2010     - need a "clever" read_pickup to restart from the other AB formulation
2011    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
2012    o remove some unused variables (reduces number of compiler warnings)
2013    o adjoint
2014      * Disable useVariableViscosity for adjoint for time being
2015        (there are a number of extensive recomputations)
2016      * Initialize certain variables needed for adjoint
2017    
2018    checkpoint57w_post
2019    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
2020                 fix the singleCpuIO RS version of MDSWRITEFIELD
2021       and add a WARNING if using globalFiles=T with multi-processors.
2022    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
2023      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
2024    o tracer advection scheme:
2025      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
2026       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
2027       was not very convenient).
2028      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
2029       (further tests needed for the implicit DST & Flux-Limiter schemes).
2030    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
2031      and sRef for convenience, handy, when you want to initialize
2032      ptracers in a large domain with a constant non-zero value. Also,
2033      untangle ptracers_init.F a little.
2034    
2035    checkpoint57v_post
2036    o change dome exp. to use variable viscosity in side-drag terms.
2037    o remove all the files from the cfc_offline test since they are now
2038      incorporated into tutorial_cfc_offline which has been producing
2039      identical results for a few days of testing
2040    o add new parameter: sideDragFactor to enable half-slip-side BC
2041      and change side-drag S/R to use viscosity from mom_calc_visc
2042      (can switch back by setting sideDragFactor=0.); affects results at
2043      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
2044       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
2045    o vorticity & strain are now computed without masking, to account for
2046      no-slip-side BC in variable viscosity calculation ; mask is applied
2047      anyway later on, before computing advection/coriolis terms.
2048    o modify exp4 to test new obcs support for reading from external files
2049      and for passive tracers
2050    o fix behavior of ptracers_monitor when monitor output is written to a
2051      netcdf-file; still not independent of monitor.F (writes in the same
2052      file).
2053    o change default value of tRef (put a uniform, meaningful value for ocean
2054      & atmos) and initialize sRef (was missing, as Martin mentioned).
2055    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
2056      to be proportional to enstrophy dissipation length.  Thus,
2057       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
2058      This is now consistent with Smagorinsky and with the manual.
2059    
2060    checkpoint57u_post
2061    o OBCS and PTRACERS: add open boundary support for passive tracers
2062      - either use homogenous (pseudo) v.Neumann conditions or prescribe
2063        OB-values from file; this is not different from the way theta and salinity
2064        are treated
2065      - however, Orlanski-radiation conditions are not supported, and the model
2066        will stop if you use pTracers and Orlanski at the same time.
2067      - beefed up the rountine obcs_external_fields_load: now only those open
2068        boundary values are overwritten with values from files for which there
2069        are really files, otherwise the OB-fields remain untouched. This makes
2070        it possible to use different OBs at different ends of the domain (as
2071        with EXF)
2072    o reduce number of exch calls in shap_filt (s2).
2073    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
2074      truncation level) 4/5 MLAdjust test results (11&12 digits match).
2075    
2076    checkpoint57t_post
2077    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
2078    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
2079      same truncation, independent of the face number: affects affects several
2080      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
2081    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
2082      note that biharmonic viscosity + no-slip was not tested in any experiment.
2083    o fix bug in non-linear free-surf side-drag ; generate new output for
2084      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
2085    o make mnc honor the writeBinaryPrec flag for most kinds of output
2086    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
2087    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
2088      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
2089    o add brackets in multi-terms sum to get same truncation, independent of
2090      the face number (manage to get exactly same value of gU,gV at the cs-edge)
2091      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
2092    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
2093      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
2094      a maximum grid-scale Reynolds number.  Also, changes all length calculations
2095      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
2096      Suggested values of viscosity parameters found in mom_calc_visc.
2097      Many new viscosity diagnostics available.
2098    
2099    checkpoint57s_post
2100    o Add clearing-house for viscosity calculations, mom_calc_visc and
2101      correct numerous bugs in LeithD and Smagorinsky discretizations.  
2102      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
2103      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
2104      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
2105      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
2106      The Strain-Tension form is now called with useStrainTensonVisc=.true.
2107      ViscAhStrain and viscAhTension are now retired.
2108    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
2109    o In response to JMC's bug report, genmake2 now ignores any soft-links
2110      that it finds in the *current* directory when searching for files.
2111      Soft-links found in any other source directories will still work as
2112      they did before.
2113    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
2114      a C routine to unlimit the stack size
2115    o mnc-ify pkg/aim snapshot vars
2116    o mnc-ify pkg/land as requested by Daniel
2117    o various changes to mnc including:
2118      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
2119      - output can now be grouped so that all files within a group
2120          change the ITER portion of their names in lock-step together
2121      - can now read ("global") PER-FACE (in addition to PER-TILE) files
2122          and works with both EXCH1 and EXCH2 (but needs more testing)
2123      - writing works for all verification test cases w/ g77 on Linux
2124    
2125    checkpoint57r_post
2126    o make MNC variable initialization happen earlier
2127    o add diagnostics for (almost) each term of the momentum Eq.
2128    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
2129    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
2130    o remove MINIMAL_TAVE_OUTPUT option ;
2131      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
2132    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
2133      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
2134    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
2135    o add time-dependent SST, SSS control
2136    o cost terms in ecco/ modularized (new cost_generic.F)
2137    o cost_averages routines are modularized (new cost_averagesgeneric.F)
2138    o new infrastructure for seaice model vs. obs misfits in seaice/
2139      * driver from the_main_loop.F is seaice_cost_driver.F
2140      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
2141      * gradient check in Exp. 6a of natl_box_adjoint/
2142    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
2143      (see README file)
2144    
2145    checkpoint57q_post
2146    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
2147    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
2148      - bug was reported by Jean-Michel and Ian Fenty
2149    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
2150      update exp. cpl_aim+ocn output.
2151    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
2152      Needed for high-res. runs with large global files
2153      to be able to limit tapelev size
2154    o Changed some tests for adjoint:
2155      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
2156      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
2157      * global_ocean.90x40x15/ back to default 3-level checkpointing
2158    o Modifications to enable scripted COMMON to MODULE conversion
2159      * verification/OpenAD/code/ has necessary scripts and description;
2160      * converts, compiles and runs successfully;
2161    
2162    checkpoint57p_post
2163    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
2164    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
2165      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
2166    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
2167    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
2168      (was already the case for dissipation with mom_vecinv,
2169       and also the case for grad.PhiHyd when staggered-timeStep)
2170      This will allow to put dissipation out-off the AB time-stepping.
2171     Unfortunately, affects truncation error. Update output of exp. that "fails"
2172      (cg2d matching number) and leave the others for later: front_relax(10),
2173      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
2174      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
2175    
2176    checkpoint57o_post
2177    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
2178      (2) its ready to be documented during the 20050801 DocFest
2179    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
2180      for ideal_2D_oce and lab_sea on linux_ia32_g77
2181    o set to #undef CTRL_SET_OLD_MAXCVARS_30
2182      in global1x1_tot/code_seaice_adj to access indices 32, 33
2183      (worth another tag)
2184    
2185    checkpoint57n_post
2186    o adding precip control xx_precip 32
2187    o adding swflux control xx_swflux 33
2188    o Replacing 10 forcing penalty cost routines by 1 generic.
2189    o Implementing partitioning in time-mean and variable adjustment
2190      for atmos. state.
2191    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
2192    o in natl_box_adjoint:
2193      * updated exp 1 to 10
2194        (but does not have time-mean vs. variable split results yet)
2195    o updated global1x1/*_seaice_adj/
2196      to incorporate latest changes
2197    o enable useSingleCpuIO for mdsio vector routines
2198      (applies in particular to tapelev I/O)
2199    o removed inefficient K-loop in all active_file*control*.F
2200    
2201    checkpoint57m_post
2202    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
2203      and advect_cs (use EXCH-2 and standard cs-32 grid files).
2204    o pkg/exch2: filling of face-corner halo regions is optional
2205      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
2206    
2207    checkpoint57l_post
2208     tag before updating tutorials (pre-release-2)
2209    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
2210       for output and interpolation of input fields onto model grid)
2211    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
2212       Affects results of exp. rotating_tank ; update output.txt.
2213    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
2214          and taking the square quantity and/or using a fraction-weight field.
2215    o fix aim_diagnostics_init.F mate numbers.
2216    o add mnc output capability to diagnostics/diagstat and update
2217      our cvsignore files for the ACSII output generated
2218    
2219    checkpoint57k_post
2220    o lab_sea now uses diagnostics package and provides a suite of
2221      new EXF diagnostics output.
2222    
2223    checkpoint57j_post
2224    o exf
2225      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
2226        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
2227        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
2228      * extended diagnostics output
2229        - now includes all EXF variables
2230        - hs, hl moved to common block
2231        - separate S/R for diagnostics, called after ctrl vector is added
2232        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
2233        - EXFqnet contains true Qnet (i.e. includes qsw)
2234      * updated verif. lab_sea, global_with_exf
2235      * Rearranging hflux (exf_mapfields -> exf_getforcing)
2236        to ensure that diagnostics sees a true EXFqnet
2237    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
2238    o diagnostics pkg: change pointers so that 1 diagnostic can be used
2239      several times with different frequencies.
2240    o mnc-ify the thsice package as requested by Daniel Enderton
2241      - the monitor--MNC output needs work
2242      - many attributes need to be added (most are currently blank)
2243    o mnc-ify theaim_v23 package as requested by Daniel Enderton
2244      - many attributes need to be added (most are currently blank)
2245    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
2246    o add Sadourny like discretization to the 4th.O vorticity advection scheme
2247    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
2248      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
2249         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
2250    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
2251     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
2252    
2253    checkpoint57i_post
2254    o Diagnostics package was changed: diagnostic allocation is now deactivated
2255      by setting an empty file name in the namelist (used to be by setting 0 frequency)
2256    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
2257      add 1rst Order upwind vertical Shear.
2258    o add a quick fix for A/B checkpointing in OFFLINE mode
2259    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
2260      end-run around the C/Fortran linking horror in eesup/src/timers.F
2261    o added pkg/runclock: allows user to terminate run based on wall clock
2262    o added non-hydrostatic scaling parameter: nh_am2
2263    o pkg/my82: futile attempt to make results compiler-independent by adding
2264      some "_d 0", etc. no effect.
2265    o for mnc output, fill the 'T' coordinate var with myTime and create a
2266      separate 'iter' variable for iteration count
2267    o pkg/diagnostics:
2268      add new capability: output of Global/Regional & per-level statistics ;
2269      tested against monitor output (including land & thSIce) on various exp.
2270    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
2271    
2272    checkpoint57h_done
2273      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
2274      data.diagnostics, data.gchem, data.ptracers) is done.
2275    
2276    o pkg/diagnostics: prepare for Global/Regional statistics.
2277      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
2278    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
2279      and rename it: DIFFERENT_MULTIPLE
2280    
2281    checkpoint57h_post
2282    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
2283    o pkg/diagnostics: change output frequency, now in seconds (instead
2284      of Nb of iterations). This requires to change data.diagnostics.
2285    checkpoint57h_pre
2286    
2287    o in mnc, let the user create the output dir if both mnc_outdir_date
2288      and mnc_outdir_num are false
2289    o add fflags() to pkg/diagnostics which allows one to specify, on a
2290      per-file basis, the file precision [default behavior is unchanged]
2291    o added diagnostics to pkg/kpp, including computation of mixed layer
2292      depth based on a temperature/density criterion
2293    o updated verification/natl_box to test the new pkg/kpp diagnostics
2294    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
2295    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
2296    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
2297      not mnc -- this mistake was found by JMC and is now corrected
2298    
2299    checkpoint57g_post
2300    o add Adams-Bashforth 3rd Order time stepping:
2301      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
2302      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
2303    checkpoint57g_pre
2304    
2305    o make lambda[Theta,Salt]ClimRelax spatially varying
2306      (default remains spatially uniform constant based on tau)
2307    o added new control variables
2308      * init. uVel, vVel, etanN
2309      * lambda[Theta,Salt]ClimRelax
2310    o separate masks used for ctrl_pack/unpack 'from write_grid' output
2311      (suggested by G. Forget)
2312    
2313    checkpoint57f_post
2314    o add parameter "baseTime" = model base time = time at iteration zero
2315      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
2316      account for baseTime shift
2317    o move Coriolis arrays from PARAMS.h to GRID.h
2318    checkpoint57f_pre
2319    
2320    o mnc-ifying the seaice package
2321    o introduced an alternative length scale calculation for use in the limiting
2322      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
2323    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
2324    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
2325      as well as grad(vort3).  Made it compatible with both approximate form
2326      for the cubed sphere and full form of these gradients.  Added flag
2327      useFullLeith to select between approximate and full form.  
2328    o add "d0" in getcon.F to reduce differences between compilers/platforms
2329      update output.txt of exp. fizhi-gridalt-hs
2330    o change port_rand funtion to allow to set the seed.
2331    o fix obscure MNC bug involving conversion between reals and integers
2332      - it caused no problems with certain (eg. gcc, ifc) compilers but the
2333        new version is now more standards-compliant
2334    o adjoint-related modifications
2335      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
2336      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
2337      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
2338    
2339    checkpoint57e_post
2340    o Adding eddy stress controls a la Ferreira et al.
2341    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
2342    
2343    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
2344      update output.txt of exp. fizhi-gridalt-hs
2345    o add more "Z" dimensions and associated coordinate vars to MNC
2346    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
2347    o parameter calendarDumps: when set, approximate months (30-31 days) and years
2348      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
2349      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
2350      months and years.  Requires pkg/cal.
2351    o diagnostics: add pickup functionality
2352      - off by default for backwards compatibility
2353      - current version only uses MDSIO -- MNC will be added
2354    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
2355    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
2356    
2357    checkpoint57d_post
2358    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
2359    o modify verification/ideal_2D_oce so that it tests the creation of mnc
2360      output from the diagnostics package
2361    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
2362    o make genmake2 more portable by using ".$FS" instead of ".f" for more
2363      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
2364    o add coordinate variables to the MNC output from the diagnostics package
2365    o change MNC-flags default value: true when useMNC=TRUE
2366    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
2367      the ability (off by default) to read the grid information using MNC
2368    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
2369    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
2370    o do snap-shot diagnostics at the middle of the time-interval (instead of
2371      at the end).
2372    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
2373      new test for AIM with thSIce + slab-ocean
2374    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
2375    o move state variable diagnostics to the beginning of the time step ;
2376      (note: still needs some work specially for snap-shot diagnostics)
2377      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
2378    
2379    checkpoint57c_post
2380    o Change testing option (-ieee) to get closer agreement between g77 & ifort
2381    o generate new output.txt files on faulks with g77 & the new -ieee option
2382    checkpoint57c_pre
2383    
2384    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
2385      update output.txt of exp. global_ocean.90x40x15
2386    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
2387      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
2388    o add saltFlux(+File) forcing capability with periodicExternalForcing
2389    o allow to use pkg diagnostics for GM-Redi & ThSIce output
2390    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
2391    o improvements for the MNC output from DIAGNOSTICS:
2392      - correct handling of the unlimitied dimension
2393      - all dims now have associated coordinate variables
2394      - variables located at U, V, and Corner ("Z") points are now written
2395        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
2396        *all* data points are output
2397    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
2398    o added pkg/seaice/seaice_monitor.F
2399    o mdsio_readfield.F can now read files visible only to master MPI process.
2400    o pkg/seaice: some test code for ice-modified ocean stress
2401    o exf_getffields interpolation defaults to bilinear for all scalar forcing
2402      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
2403      spurious negative numbers for precipitation and humidity.  Will cause
2404      some small numerical differences for integrations using pkg/exf/exf_interp.F.
2405    o pkg/ctrl/
2406      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
2407        May be enabled via doPackDiag
2408      *  introduce z-scaling of
2409         + gradient (doZscalePack) and
2410         + control (doZscaleUnpack)
2411    o pkg/mdsio/
2412      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
2413      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
2414    
2415    checkpoint57b_post
2416    o simplify options in diagnostics_fill arguments (remove weird combinations)
2417    o fix MNC coordinate variables so that they now contain per-face index
2418      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
2419      general, EXCH2 grids are only aligned to a "local" coordinate system
2420    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
2421    o Implement instantaneous output within pkg diagnostics:
2422      setting a negative frequency in data.diagnostics produces
2423     "snap-shot" output (as opposed to time-average if freq > 0)
2424    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
2425      NOTE: change ptracer diagnostics name: use 2 characters to work with
2426            more than 9 tracers. Add also diagnostics of advect & diffus flux.
2427    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
2428      becomes the coordinate variable for the 'T' dimension
2429    o add CF-style coordinate variables to MNC
2430      - just a first cut:  numbers are meaningless on the cubesphere and
2431        missing along the T axis but otherwise it works!
2432    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
2433    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
2434    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
2435      this is based directly on what the model compute, so that the content of
2436      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
2437    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
2438    o clean up build options files for SunOS, in particular
2439      - remove -traditional from xmakedepend
2440      - change -xarch=v9 to -xarch=native for f77
2441      - restore use of make (not gmake)
2442      - add CC=gcc if using g77
2443    o changes per discussion of AM, JMC, & EH3 today:
2444      - move redundant "grid" variables out of "state" -- in preparation of
2445        creating proper CF-style coordinate variables and in recognition
2446        that any/all grid variables can be easily copied (eg. w/NCO) from
2447        the grid files into any of the other NetCDF files
2448      - *always* output grid variables with MDSIO (this will eventually be
2449        changed)
2450      - output MNC grid file if useMNC is true
2451    o every instance of _END_MASTER() has been found and replaced with
2452      _END_MASTER( myThid ) in order to satisfy certain picky Sun
2453      preprocessors
2454    o re-arrange diagnostics pkg initialisation:
2455     - allow each package to extend the available diagnostics list
2456     - add some checking and fix small problems (multi-threaded, ...)
2457     - new S/R diagnostics_fill (replace fill_diagnostics):
2458       look through the short list of active diag. (instead of the long list)
2459       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
2460    
2461    checkpoint57a_post
2462    o this set of changes restores TAMC compatibility
2463      tested for global_ocean.90x40x15 adjoint on trough
2464      (what a pain)
2465    
2466    checkpoint57a_pre
2467    o some modifs in tools/build_options for sunos
2468    o call ctrl_pack for ctrl at end for optimcycle=0
2469    
2470    checkpoint57
2471    o add horizontal bi-harmonic viscosity for vertical velocity
2472      - new parameter viscA4W (defaults to viscA4)
2473      - affects only non-hydrostatic code
2474      - to be done: no-slip lateral boundary conditions
2475    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
2476    o implement Implicit Vertical advection for pTracers
2477    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
2478      (implemented also for implicit vertical diffusion & advection)
2479    o OBCS: extend application of tracer open boundary conditions
2480      to a strip beyond the boundary of width Olx/Oly
2481    o add call monitor to TAF set of required calls (flow directives)
2482      and include in natl_box_adjoint
2483    o untangle a few ifdefs related to cost, ctrl, autodiff
2484      untangel a few ALLOW_ECCO_OPTIMIZATION
2485    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
2486      (theta2, salt2 in ecco_cost_weights)
2487    
2488    checkpoint56c_post
2489    o OBCS as control variables
2490      - update ctrl_ad_diff.list, obcs_ad_diff.list
2491      - remove balance of obcs controls from default
2492      - fix index bug nobcs in ctrl_init
2493      - fix dummy fields filen in ctrl_pack
2494      - add dummy weights for obcs
2495    o lsopt: comment out fort.94 output
2496    o optim:
2497      - remove unnecessary header files
2498      - adjusted namelists
2499      - add xerbla.F to Makefile
2500    o exf:
2501      - multiple modifications of exf_check_range
2502      - unit change in exf_init_runoff from [m/year] to [m/s]
2503    o mdsio:
2504      - i/o-vector change debugLevel from debLevA to debLevB
2505    
2506    checkpoint56b_post
2507    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
2508      is called from DO_THE_MODEL_IO
2509      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
2510      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
2511      - clean up PTRACERS_WRITE_TIMEAVE a little
2512    o add another verification experiment that tests both the cfc-pkg and
2513      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
2514      reactive tendencies treated inline with regular timestepping
2515    o testreport previously did a lousy job of comparing small numbers, so
2516      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
2517      implemented in the little c-progam tmp_cmpnum.c which is embedded in
2518      testreport.
2519    o ptracers_monitor: bug fix for MPI
2520    
2521    checkpoint56a_post
2522    o GCHEM: finish reorganizating the package
2523      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
2524        (introduces another 3D-array for each passive tracer, but only if
2525        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
2526        gchemTendency is not needed because the timestep is done separately)
2527      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
2528      - GCHEM is now---more or less cleanly---separate from PTRACERS
2529      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
2530        so clear to me how that should be done in a general way.
2531    o CFC: improve formatting of output in CFC_ATMOS
2532    o PTRACERS:
2533      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
2534        that ALL experiments with ptracers enable can be checked. This makes
2535        GCHEM_MONITOR obsolete.
2536      - include a runtime parameter PTRACERS_monitorFreq that defaults to
2537        monitorFreq
2538      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
2539    o add PTRACERS (PTR0[1-5]) to testreport output
2540    o exf_check_range:
2541      * default changed to .TRUE.
2542      * will check values for niter0 if debLevA, every timestep if debLevB
2543      * STOP in exf_check_range if 'out of range'
2544      * range chosen generous to allow for potential extema
2545      TBD: a version with stricter range
2546           permitted range would be runtime parameters
2547    o GMredi:
2548      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
2549      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
2550      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
2551    o GCHEM:
2552      - move call to GCHEM_FORCING_SEP, so that it is now called before
2553        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
2554      - introduced a useGCHEM runtime flag and applied it everywhere.
2555      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
2556        this flag is now only visible within GCHEM-pkg routines.
2557      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
2558        be replaced by a 3D array that is computed before thermodynamics; for
2559        this, the tracer ID iTracer had to be included into the parameter list
2560        of ptracers_forcing
2561      - set up forward_step to call gchem_forcing, that will replace
2562        gchem_forcing_int in ptracers_forcing
2563      - cleaning up
2564    o small cleaning of exch2: remove files that are also in eesupp/src
2565    
2566    checkpoint56
2567    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
2568    o mnc: cleanup "full" files--fixes out-of-memory problem
2569    o ECCO-GODAE
2570      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
2571      * fully merged and updated from SIO code
2572        windstress sign change affects
2573        - exf_inscal_[u/v]stress
2574        - sign of xx_tau[u/v] adjustments
2575        - signs in cost_scat
2576      * ctrl_get_gen: avoid update of tau[u/v] for first few days
2577      * natl_box_adjoint updated and compressed
2578      * 2-level checkpoint switch added
2579        (tested in EXP. 1 of natl_box_adjoint)
2580      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
2581    o SVD
2582      * first complete, non-hacked version for SVD calculations
2583      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
2584        performed via direct access files admtlm_vector.it????
2585        (via ctrl_[un]pack)
2586      * optimcycle is used for ARPACK iteration counter
2587        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
2588      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
2589        and add linear transforms where necessary
2590      * controls are initial/final SST, SSS (can be extended; need to check
2591        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
2592    o mdsio: filename info to both stderr, stdout
2593    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
2594      from sign change
2595    
2596    checkpoint55j_post
2597    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
2598      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2599    o add consistent build directories and .cvsignore files to verification
2600    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
2601    o make all subroutines 30 or less characters in length for certain older
2602      compilers to work (a thorough search only turns up two routines in
2603      pkg/ptracers)
2604    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
2605      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2606    
2607    checkpoint55i_post
2608    o change arrays for total vertical diffusivity (2.D if explicit,
2609      3.D if implicit) ; each ptracer uses its own background value.
2610    o added mnc/NetCDF output capability to ocn_compon_interf
2611      - added bits to verification/cpl_aim+ocn so that it can run on
2612        ITRDA and other clusters without the mpirun "-wd" option
2613    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
2614      configuration
2615    o give MNC the ability to create additional files rather than
2616      exceeding a specified file size limit "MNC_MAX_FILESIZE"
2617      - the default is just less than 2GB which is a practical limit
2618        on many systems
2619    o Compute the non-local term using either KPP vertical diffusivity (=default)
2620       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
2621    
2622    checkpoint55h_post
2623    o add verification test "vermix"
2624    o remove all the *_ioinc flags and replace with the single global
2625      outputTypesInclusive flag
2626    o allow to set a vertical profile of vertical diffusivity for T & S
2627    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
2628    o useMNC moved from data.mnc to data.pkg
2629    
2630    checkpoint55g_post
2631    o Renaming carbon AD experiments to comply with testreport conventions
2632    o Updating adjoint of Held-Suarez hs94.1x64x5
2633    o Fixing directives for non-ECCO forward_step, after ECCO directives
2634      have been fixed to avoid recomp. of do_oceanic_phys
2635      Works well for global_ocean.90x40x15,
2636      but recomp. issue remains for carbon
2637    o Updating adjoint output for natl_box_adjoint after
2638      pkg/ecco has been modified (see taga c55d_post)
2639    
2640    checkpoint55f_post
2641    o rename to timeave_init_fixed
2642    
2643    checkpoint55e_post
2644    o some delicate re-shuffle of store directives to avoid one
2645      extra call of do_oceanic_physics
2646      affects ecco_the_main_loop.F, do_oceanic_physics.F
2647      checkpoint_lev1_directives.h
2648    o NB: this may break global_ocean adjoint temporarily,
2649      but it is clear how to fix it. Will do later, need this now.
2650    
2651    checkpoint55d_post
2652    o ECCO specific cost function terms (up-to-date with 1x1 runs)
2653    o ecco_cost_weights is modified to 1x1 runs
2654    o modifs to allow observations to be read in as
2655      single file or yearly files
2656    o enable to read exf forcing fields as either
2657      single file or yearly files (flag useExfYearlyFields)
2658    checkpoint55d_pre
2659    
2660    o switch between 2-level and 3-level checkpointing
2661    o add ability of MNC to write local and "partial" (eg. 2D slices where
2662      the full 3D field is never actually stored) arrays to NetCDF files
2663      with the correct (that is, the complete multi-dimensional) set of
2664      array indicies
2665      - used in mom_vecinv() to write the diagFreq output
2666      - tested (demonstrated) in verification/aim.5l_cs
2667    o further mnc-ification
2668      - add verification/lab_sea to the list with mnc setups
2669      - fix undefined mnc v-names in cd_code
2670      - add kpp to mnc output (both snapshot and timeave)
2671    o non-hydrostatic code
2672      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
2673        in calc_gw.F
2674      - defaults to viscAh
2675      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
2676        friction or Leith) in non-hydrostatic mode, as long as there is
2677        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
2678    o pkg/cost
2679      extend simple cost functions to treat time mean quantities
2680      (T,U,V) via cost_accumulate_state from cost_tile
2681    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
2682        be 2 times larger than the minimum size the advection scheme requires.
2683        now get a perfect conservation of salt in advect_cs test-exp (updated)
2684    o GGL90 (Gaspar's TKE mixed layer)
2685      - add horizontal diffusion of TKE, requires exchanges in
2686        do_fields_blocking_exchanges, horizontal diffusivity is zero by
2687        default. In OPA there is no horizontal diffusion of TKE but the
2688        mixing coefficients are computed from a horizontal average of TKE of
2689        6 points or so. I think that diffusion has a little more physical
2690        justification.
2691      - clean up ggl90_calc in the hope of reducing memory usage (this hope
2692        was in vain)
2693      - mask tke-variable in ggl90_init
2694    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
2695    o fix biharmonic diffusion on CS-grid.
2696    o more obcs stuff
2697      - added obcs_external_fields_load as an alternative to the EXF-pkg option
2698        for reading boundary values. This routine is called from
2699        obcs_prescribe_read
2700      - updated obcs_check
2701      - changed sponge layer relaxation parameter units for days to seconds
2702      - turned off sponge layer by default
2703      - changed argument list of OBCS_CALC to myTime+deltaTclock
2704      - fixed about 35 bugs in obcs_external_fields_load
2705    
2706    checkpoint55c_post
2707    o obcs stuff
2708      - new runtime flags useOBCSprescribe, useOBCSbalance
2709      - re-arranged obcs_calc
2710      - moved exf_getobcs to obcs_prescibe_read
2711        obcs_prescibe_read is called after ORLANSKI stuff
2712        and independent of it (executable can contain all).
2713      - updated obcs_check
2714      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
2715        These may be necessary only if tangential velocities are
2716        prescribed at OB, not sure, needs testing.
2717    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
2718      which simplifies the calls and passes the ifc check-bounds test
2719    
2720    checkpoint55b_post
2721    o add a 2D scalar, Z location, exchange_2 routine.
2722    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
2723      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
2724      affects advect_cs results (for the wrong reason): update output.txt
2725    o use a more standard discretization for biharmonic viscosity ;
2726     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
2727      affects results of dome set-up: update output.txt
2728    o fix gad_advection.F (CubedSphere part), back to version 1.23
2729    o fix bug in mom_vi_del2uv.F (CubedSphere part).
2730    
2731    checkpoint55a_post
2732    o merged code to
2733      * prescribe/read time-dependent open boundaries
2734        (works in conjunction with exf, cal)
2735      * sponge layer code for open boundaries
2736      * each boundary N/S/E/W now has its own CPP option
2737        (healthy for the adjoint)
2738    
2739    checkpoint55
2740    o up-to-date adjoint of previous breaks
2741      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
2742      - global_ocean_ebm: adjoint still needs fix (TLM ok)
2743      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
2744      - carbon: * remove tr1-related adjoint verification
2745                * add ptracer as control variable
2746    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
2747      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
2748    
2749    checkpoint54f_post
2750    o in verification/carbin/ remove experiment related to
2751      ALLOW_PASSIVE_TRACER (array tr1 etc)
2752      code_ad/ input_ad/ results_ad
2753    
2754    o add two new packages
2755      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
2756        + subject to optimization (memory)
2757      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
2758        + subject to reordering (many GOTOs in the original code)
2759        + so far opps is called for every (i,j) point, and then operates in
2760          the vertical; one may want to reorder the scheme in order operate in
2761          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
2762          fields)
2763    o overhaul of IO so that we now have flags for MDSIO and/or MNC
2764      - all verification tests compile and run with linux_ia32_g77
2765      - defaults are compatible with current input files--nothing
2766        should change if you were not previously using MNC
2767      - MNC output has been added in numerous places (eg. timeave)
2768        but there are still a few writes not yet do-able with MNC
2769        (this is in progress)
2770      - flags now allow for either/or/both use of MDSIO and MNC and
2771        documentation will soon follow
2772      - numerous small formatting cleanups for ProTeX
2773    o add version info (via BUILD_INFO.h) to MNC and stdout
2774    
2775    checkpoint54e_post
2776    o add two new packages
2777      - pp81 (Packanowski and Philander, 1981), Richardson number and
2778        stratification dependent mixing
2779      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2780      - these scheme operate in a similar manner as KPP (without ghat, of
2781        course), however there is only one diffusivity that is used for both
2782        temperature and salinity (and passive tracers)
2783    o add offline package
2784    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2785      provided by Stephanie Dutkiewicz
2786    o genmake2: add ability to search for C compilers and cleanup test output
2787      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
2788    
2789    checkpoint54d_post
2790    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
2791    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
2792      leading to additional shift by 5 days each year of integration
2793       (i.e. leading to considerable offset over the years)
2794    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
2795    o start with no AB and no initial filtering (staggerTimeStep):
2796      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
2797    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
2798      (external loading & cpl import/export stay in forward_step.F)
2799    o update coupling interface to work with new staggerTimeStep
2800    o change MDSIO ptracers_pickup.
2801    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2802    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2803    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2804    
2805    checkpoint54c_post
2806    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2807      this affects (truncation error) output.txt of test-exp:
2808       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2809    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2810    o change Qnet to always be the net heat flux, (+upward).
2811      affects (truncation error) output of natl_box exp.: updated
2812    o define the max number of passive tracers in PTRACERS_SIZE.h
2813    o start to test mnc routinely in exp0
2814    o add sea-ice loading (sIceLoad) as a new forcing field.
2815    
2816    checkpoint54b_post
2817    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2818       impressive on Altix and Opteron systems)
2819    o diagnostics can now write NetCDF files through the mnc package
2820    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2821    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2822    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2823      affects (truncation error) output of lab_sea & natl_box exp.: updated
2824    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2825    
2826    checkpoint54a_post
2827    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2828    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2829    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2830    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2831      + internal_wave (shift in writing cg2d_ini_res)
2832    checkpoint54a_pre
2833    
2834    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2835      - modified verification/lab_sea and natl_box_adjoint accordingly
2836    
2837    checkpoint54
2838    checkpoint53g_post
2839    o prepare splitting of thermodynamics: store convect.counter in common block
2840    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2841      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2842    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2843    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2844    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2845    o restore adjointability
2846    
2847    checkpoint53f_post
2848    o modifications that affect AIM experiment results (update output.txt):
2849      - no advection of S at top interface Nr (pkg/generic_advdiff)
2850      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2851    o AIM pkg:
2852      - include stability function into surf.Flux derivative relative to Tsurf
2853      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2854    
2855    checkpoint53e_post
2856    o merged cylindrical coord configuration
2857    o added rotating_tank experiment
2858    checkpoint53e_pre
2859    
2860    checkpoint53d_post
2861    o faulks upgraded: re-generate output.txt that have changed:
2862       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2863    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2864    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2865    o added Sadourny discretization of Coriolis
2866      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2867      - re-enabled use of omega3 (useAbsVorticity)
2868    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2869      vector-invariant equations
2870      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2871    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2872      hopefully without new bugs
2873      - still to do: biharmonic friction for non-hydrostatic w
2874    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2875    o regenerated output for global_ocean_ebm (using -ieee)
2876    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2877      of mom_common/
2878      - simple re-arrangement of instructions within computing loop
2879    checkpoint53d_pre
2880    
2881    checkpoint53c_post
2882    o new version of coupler for AIM+thSIce and Ocean models
2883     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2884     - land: change Evaporation of snow
2885     - aim with thSIce: fix bug in snow-precip.
2886    o changes to calc_gw.F
2887     - bug fix for w^2 term near the bottom boundary
2888     - (hopefully) improve the lateral slip boundary condtions for use with
2889        partial/looped cells
2890      - because the bug fix changes two verification experiments anyway (exp5
2891        and plume on slope), change the lateral boundary condition from half slip
2892        to the value of no_slip_sides
2893    o ebm package wasnt quite up to the parallel task. Fixed that.
2894    o Adjoint of EBM package + verification
2895      * TLM OK
2896      * ADM not sufficient accuracy yet (needs further testing)
2897    
2898    checkpoint53b_post
2899    o Commiting new energy balance model to repository
2900      * package is pkg/ebm
2901      * verif. is verification/global_ocean_ebm
2902      * references are in ebm_driver.F
2903    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2904    C        Global thermohaline circulation. Part I:
2905    C        Sensitivity to atmospheric moisture transport.
2906    C        J. Climate 12(1), 71-82
2907    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2908    C        Global thermohaline circulation. Part II:
2909    C        Sensitivity with interactive transport.
2910    C        J. Climate 12(1), 83-91
2911    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2912    C        Destabilization of the thermohaline circulation
2913    C        by atmospheric eddy transports.
2914    C        J. Climate 7(12), 1870-1882
2915    o Will need long integration testing.
2916    checkpoint53b_pre
2917    
2918    o created pkg/mom_common in preparation for variable viscosity code
2919    o renamed and split ini_mnc_io
2920    o pkg/land: only liquid water can diffuse or run-off
2921    o AIM using land: soil wetness availability account for snow
2922    o added printMapIncludesZeros to EEPARMS namelist
2923    
2924    checkpoint53a_post
2925    o restore TAMC compatiility for exf_constants.h
2926      (no usage of _d in .h)
2927    o Additional storing in KPP in an attempt to fix
2928      TAMC problem with adjoint of KPP code.
2929      (no success...)
2930      Identical code works fine with TAF.
2931    o Fixed verification/natl_box_adjoint experiments.
2932      Initial conditions for Experiments 4 and 5 are now
2933      set to "SEAICE_initialHEFF=0", which is more reasonable,
2934      and hence gives results closer to that of Experiment 2.
2935      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2936    
2937    checkpoint53
2938    o stable checkpoint with up to date adjoint
2939      TLM tests only run for 1st grdchk at the moment. Its unclear if
2940      this is a code problem or a problem with resetting code for g_
2941      variables that is being autogenerated wrong.
2942      Otherwise:
2943       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2944       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2945         are both still in chaos following their security messes.
2946    
2947    checkpoint52n_post
2948    o various build (mostly genmake2) changes including:
2949      - ability to build/run more easily within Cygwin and MacOS X
2950      - more complicated Makefiles with a stronger dependence on Gnu Make
2951    o pkg/seaice modifications
2952      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2953        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2954        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2955      - changed proxy for geostrophic velocity and updated
2956        verification/lab_sea/results/* accordingly
2957      - removed ADI dynamic solver from pkg/seaice
2958      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2959        they caused a segmentation fault under certain circumstances
2960      - removed unused field WATR
2961    o bug fix in exf-package:
2962      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2963         now reflect that.
2964    o small fixes in the cal-package:
2965      - set reference date to first of January for the 'model'-calendar
2966      - failing of cal_CheckDate in cal_FullDate now actually results in a
2967        warning
2968    o small modifications in exf-package to increase flexibility:
2969      - change climtempfreeze from a constant to a runtime parameter that
2970        is specified in data.exf_clim (default = -1.9)
2971      - introduce runtime parameter windstressmax (default = 2.0) that is
2972        specified in data.exf
2973    o fix in pkg/thsice:
2974      - update Evap (Tsf changes) to be consistent with Latent heat flux
2975      - maintain snow precipitation unchanged (even if Tsf >=0).
2976     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2977    
2978    checkpoint52m_post
2979    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2980      this does not change any of the results, because myIter=0 in swfrac always
2981      lead to jwtype=2 (the default anyway), but the call makes little sense
2982      as a default
2983    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2984    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2985      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2986    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2987    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2988    o extending useSingleCpuIO option to work with new exch2 I/O format
2989      - old-style, missing-tile I/O is still accessible by defining CPP
2990        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2991    o monitor package can write to NetCDF files and/or STDOUT
2992    o fix re-definition bug in MNC_GRID_INIT_ALL()
2993    o doc/api_reference added
2994      - a framework for building an API Reference Manual using all
2995        the "protex" comments embedded in the code
2996      - see pkg/generic_advdiff, pkg/mnc for examples
2997    o MNC:
2998      - make myThid the last argument for all subroutines
2999      - new default for the grid files: NO halos
3000      - add useMNC and other run-time flags
3001      - separate per-file-group handling of the unlimited dimension
3002      - early initialization of MNC w/ flags read at the eeboot stage
3003        and lookup tables set in initialize_fixed
3004      - write all MNC output to a freshly-created directory
3005    o thermodynamics sea-ice (thsice) is now tested with testreport.
3006    o test exp. advect_cs: use the standard cs32 grid ; update output.
3007    o Added functionality to grdchk:
3008      pick global i,j,k position (or nearest wet) where to perform check.
3009    
3010    checkpoint52l_post
3011    o new land formulation:
3012      a) use ground enthalpy as prognostic variable to ensure exact
3013         energy conservation.
3014      b) account for water temperature and for latent heat of freezing
3015         in all processes (rain, run-off, ground storage)
3016      c) compute surface and ground temperature implicitly.
3017    o aim_v23 modification for new land model:
3018      a) Treat separately land / ocean / sea-ice surface fluxes
3019         to allow implicit computation of land & sea-ice surface temp.
3020      b) add snow precipitation.
3021    checkpoint52l_pre
3022    
3023    o fix problem (when 1 tile is empty) in min/max monitor.
3024    o fix bug in timeAve (u,vZetatave in common block)
3025    o no restoring terms under ice for pkg/seaice
3026    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
3027    o bug fix for pkg/seaice pickups
3028    o change MNC call locations and add coordinate attributes
3029    o mask vorticity at the corner ; affects global_ocean.cs output
3030    o fix ini_curvilinear_grid ; test CS experiments with mpi
3031    o aim.5l_cs: modify sea-ice fraction input file ; update output
3032    o exf: Adding simple range check routine for exf fields after read
3033    
3034    checkpoint52k_post
3035    o removed top-level directory "diags"
3036      - we migrated these functions to pkg/timeave a long time ago
3037    o fixed bug introduced in pkg/monitor
3038    o accuracy ctrlprec = 32 insuffient for gradient checks using
3039      averaged fields (I/O via cost_averages)
3040      -> use ctrl.h in active_file*.F to control I/O precision.
3041    o paramter list of CALL ADTHE_MAIN_LOOP
3042    o added initial do_the_model_io to ecco
3043    o set all ...Freq to zero after cost_final
3044      taveFreq, dumpFreq, pChkptFreq
3045    o MAIN and ECCO differentiability restored
3046    
3047    checkpoint52j_post
3048    o fix nchklev in tamc.h for global_ocean...
3049    o Bringing flow and store directives up-to-date
3050    o Really weird thing!
3051      call do_the_model_io from the_main_loop with parameters
3052      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
3053      TAF places a faulty re-call of initialise_varia
3054      after cost_final call which should not be there!
3055    checkpoint52j_pre
3056    
3057    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
3058      error messages
3059    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
3060    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
3061      debug output
3062    o modfied mdsio_writefield.F to handle non-global files under exch2
3063    o update AIM Cubed-Sphere exp (aim.5l_cs):
3064      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
3065    o update AIM Equatorial Channel exp:
3066      use standard aim_v23 pkg and change the SST fields to be more realistic.
3067    o globalFile now works with exch2
3068    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
3069      mon_vort3.F to make exch2 friendly with >1 tile per cube face
3070    o limit timeave output for hi-res integrations
3071    
3072    checkpoint52i_post
3073    o removed CPP_EEOPTIONS.h from verification/*/code
3074    o updated the tiling for global_ocean_pressure
3075    checkpoint52i_pre
3076    
3077    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
3078      the old pkg/aim).
3079    
3080    checkpoint52h_pre
3081    o shortened offending lines in exch2_send_rx?.template
3082    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
3083    o genmake2: add build & execute test for NetCDF code
3084    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
3085      old grid files, moved CPP_EEMACROS.h to pkg/exch2
3086    o added useSingleCPUIO flag to monitor.F and mon_out.F
3087    o added temporary hack for sea-ice dynamics on the cube:
3088      metric terms are ignored and it is assumed that
3089      there is no sea-ice on cube faces 1, 2, 4, and 5.
3090    
3091    checkpoint52f_post
3092    o added exch2 cube routines to pkg/exch2
3093    o modified hs94.cs-32x32x5 to use it
3094    o added new grid files to hs94.cs-32x32x5
3095    checkpoint52f_pre
3096    
3097    checkpoint52e_post
3098    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
3099      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
3100    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
3101      to work with implicit vertical advection and AB ;
3102    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
3103    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
3104     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
3105    checkpoint52e_pre
3106    
3107    o fix bug in impldiff when Nr=1 or Nr=2.
3108    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
3109    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
3110    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
3111      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
3112    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
3113    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
3114    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
3115    
3116    checkpoint52d_post
3117    o re-tiled many expts to allow comparison in multi-processor mode
3118      - updated output accordingly
3119      - changed hs94.128x64x5 to use intial T from file rather than use the
3120        random number generator
3121    o add infrastructure in model routines for fizhi and gridalt packages
3122    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
3123    o changes to permit hi-res, cubed-sphere, configuration
3124      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
3125      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
3126      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
3127        of surface winds for the cube
3128      (A verification experiment, based on global_ocean.cs32x15, but with
3129       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
3130       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
3131       complete with example surface forcing files and matlab scripts to look
3132       at the output and compare it with that of global_ocean.cs32x15.)
3133    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
3134       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
3135       to conform to the common rule.
3136    o check-in the first version of the coupler + interfaces for multi-components
3137       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
3138       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
3139       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
3140       - ocean and atmos. share the same horizontal grid (no interpolation).
3141       - exchanges between component and coupler is done in forward_step
3142    o new verification experiment, cpl_aim+ocn:
3143       coupled ocean - AIM atmosphere on cs32 grid.
3144    
3145    checkpoint52d_pre
3146    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
3147    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
3148    
3149    checkpoint52c_post
3150    o Fixing OPTIONS files for use of exf:
3151      - ALLOW_ECCO not needed
3152      - ECCO_CPPOPTIONS.h should not be included from
3153        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
3154        as has been the case in the past
3155      - All cal/exf related options are currently set in
3156        single header file. Should remain so until we
3157        agree on a consistent new policy.
3158    o Removed all CPP options for cal package.
3159      cal has no more CPP options.
3160    o modified STOREs in GAD_ADVECTION
3161    o corrected key comp. for passkey
3162    
3163    checkpoint52b_post
3164    o new version: "thsice" of thermodynamic sea-ice pkg:
3165     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
3166     - modify fluxes but do not change theta directly;
3167     - light cleaning of bulk_force pkg (still needed with thsice).
3168     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
3169       + output_thsice.txt to test thsice & bulk_force pkgs.
3170    o put back grid & coriolis monitor output.
3171    checkpoint52b_pre
3172    
3173    o call "do_the_model_io" at the beginning (=> dump initial state)
3174    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
3175    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
3176      (need info on NUMBER_OF_PTRACERS)
3177    o missing PTRACERS headers in some routines
3178    o default tamc.h in pkg/autodiff supposed to crash
3179      to ensure proper customization
3180    
3181    checkpoint52a_post
3182    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
3183      - moved surfaceTendencyTice from pkg/seaice to main code
3184      - subroutine FREEZE_SURFACE now limits only surface temperature
3185        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
3186        => new output.txt for global_ocean.cs32x15 & global_with_exf
3187      - keep the old version of FREEZE for backward compatibility;
3188        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
3189      - corresponding modifs for TAF directives
3190    o added surface flux output variables to TIMEAVE_STATVARS
3191    o time-averaged output for pkg/ptracers
3192    o fix problem with ECCO-related divided adjoint
3193      snapshot file was missing some ad-variables,
3194      but no warning issued by TAF
3195    
3196    checkpoint52a_pre
3197    o some bug fixes for #undef REAL4_IS_SLOW
3198    
3199    checkpoint52 = ecco_c52_e35
3200    o after testing adjoints of checkpoint51u_post
3201    
3202    checkpoint51u_post
3203    o this is the post-merge tag of the ecco-branch
3204      (needs another clean checkout and re-testing)
3205    o various natl_box_adjoint configs and results
3206      but no input fields
3207    o obcs adjoint not yet merged!
3208    o adding ECCO global 1x1 and 2x2 degree configs
3209    o updated/extended some store directives for seaice
3210    o pkg/ecco now containes ecco-specific part of cost function
3211    o top level routines the_main_loop, forward_step
3212      supersede those in model/src/
3213      previous input data.cost now in data.ecco
3214      (new namelist ecco_cost_nml)
3215    o in ctrl/ cleaned some cross-dependencies and updated CPP options
3216    
3217    checkpoint51t_post
3218    o this is the pre-merge tag of the ecco-branch
3219    
3220    checkpoint51s_post
3221    o cleanup: removed various obsolete #define-s
3222    o pkg/grdchk
3223      - renamed 'ph-grd 3' to 'grad-res'
3224      - merged from ecco-branch
3225        (remaining bug fixes for obcs gradient checks)
3226      - additional high-precision output for testreport
3227        (grep for 'precision_grdchk_result')
3228    
3229    checkpoint51r_post
3230    o cleaned up or removed CPP_OPTIONS.h files
3231    o updated results for some of the tests to reflect the new
3232      optfiles (-ieee: -O0 instead of -O3)
3233    
3234    checkpoint51q_post
3235    o cd_code:
3236      - moved cd_scheme.F -> cd_code_scheme.F
3237      - separate read_checkpoint from cd_code_ini_vars.F
3238      - separated cd_code part from write_checkpoint
3239      - updated AD_SOURCE, generated .flow
3240      - added CD_CODE_VARS.h to the_main_loop
3241      - Moving cd_code specific store dir.s to pkg/cd_code
3242    o ctrl package totally restructured
3243      - pack/unpack now optional and decoupled from
3244        xx_/adxx_ I/O
3245      - ctrl_pack/unpack cleaned
3246        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
3247      - confined inclusion of AD_CONFIG.h to where necessary.
3248    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
3249    
3250    checkpoint51p_post
3251    o create initial cd_code package
3252      - WARNING: the initialization of fields within packages
3253        is broken because INI_FIELDS (where READ_CHECKPOINT is
3254        called) is called *before* PACKAGES_INIT_VARIABLES.
3255        This seems to be backwards since
3256        1) its important to initially zero the entire field including
3257           the "halo" region
3258        2) zeroing needs to be done *before* reading pickup info
3259           and the pickup call might or might not happen in any
3260           particular run
3261      - this needs an overhaul for R2
3262    o cleanup verification/*/code/GMREDI_OPTIONS.h
3263    o cleanup testreport
3264    
3265    checkpoint51o_post
3266    o bringing AD-related verif's up to date with genmake2
3267      - carbon/
3268      - global_ocean.90x40x15/
3269      - hs.94.1x64x5/
3270      - (front_relax/ )
3271    o (more) consistent directory structure for AD-related verif.'s
3272    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
3273    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
3274    o bug fix in find_alpha.F for MDJWF:
3275      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
3276        change rho -> rho-rhoConst
3277      - replace call find_rho to find_rhonum
3278    o initialisation of rFlx extended to full array (required by TAF)
3279      and shifted to thermodynamics
3280    o removed PTRACERS.h in ptracers routine
3281    o added surfacetendencyPtr to S/R parameter list pracers_forcing
3282    o Correcting initialisations for fVerU, fVerV.
3283    o helping TAF to recognize dependency on kUp for
3284      fVerU, fVerV
3285    o Replacing delZ by delR in pkg/ctrl/
3286    checkpoint51o_pre
3287    
3288    o undid all of cp51 pending some cleanups and discussion
3289    o added the [#include "AD_CONFIG.h"] statement to all files that need
3290       it for adjoint/tl #defines
3291     o re-worked the build logic in genmake2 to support AD_CONFIG.h
3292     o removed tools/genmake since it no longer works
3293    
3294    checkpoint51n_post
3295    o modifications to make FREEZE flux visible to pkg/kpp
3296      - moved surfaceTendencyTice from pkg/seaice to main code
3297      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
3298      - subroutine FREEZE now limits only surface temperature
3299        (this means new output.txt for global_ocean.90x40x15,
3300         global_ocean.cs32x15, and global_with_exf)
3301    o added surface flux output variables to TIMEAVE_STATVARS
3302    
3303    checkpoint51n_pre
3304    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
3305    o added [#include "AD_CONFIG.h"] to all files that use the following
3306      defines:
3307      - ALLOW_ADJOINT_RUN
3308      - ALLOW_TANGENTLINEAR_RUN
3309      - ALLOW_ECCO_OPTIMIZATION
3310    
3311    checkpoint51m_post
3312    o incorporating changes to get TAMC/TAF working in genmake2
3313      - added new TAMC/TAF targets to the Makefile
3314      - various cleanups related to package handling
3315      - these changes should have no impact on the forward model
3316    
3317    checkpoint51l_post
3318    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
3319     - faster algorithm for cal_addtime.F
3320     - higher precision arithmetic, where needed
3321     - pkg/exf *startdate variables changed from calendar date to
3322       model integration time
3323    
3324    checkpoint51l_pre
3325    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
3326    o enable to apply restoring on S & T only in a latitude band.
3327    o update output (external_forcing_surf modif. change truncation errors)
3328       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
3329    
3330    checkpoint51k_post
3331    o change default to: useNHMTerms=.FALSE.
3332     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
3333       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
3334     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
3335        exp1, ideal_2D_oce
3336     - change data file of oceanic exp (leave the results unchanged for now)
3337       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
3338    o set gravitySign automatically according to the vertical coordinate used
3339      (and change sign: back to "logical" value: +1 when R increases downward)
3340    o added an include barrier to the default CPP_OPTIONS.h and
3341      removed the #include "PACKAGES_CONFIG.h" from it
3342    o fix a bug in mom_fluxform (from chk51j_post)
3343    
3344    checkpoint51j_post
3345    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
3346    o adjusted some flow directives (dynamics, thermodynamics)
3347    o added cubed-sphere case to test cost function
3348    o heckpoint_lev?_directives.h now include
3349      pkg-specific directives, whenever those are enabled.
3350    o Moving pkg-specific flow directives to corresponding pkg
3351      Moving pkg-specific differentiation list to corresponding pkg
3352      Moving pkg-specific checkpoint-lev storing to corresponding pkg
3353      ---> conventions are
3354           - pkg_ad.flow
3355           - pkg_ad_diff.list
3356           - pkg_ad_check_lev?_dir.h
3357    
3358    checkpoint51i_post
3359    o merge of the branch-genmake2
3360      - knowingly breaks the older genmake
3361      - automatic generation of all ALLOW_${PKG_NAME} defines
3362      - new testreport supersedes older testscript
3363    o large number of package inclusion and header cleanups
3364    checkpoint51i_pre
3365    
3366    o new output for adjoin of global ocean vector invariant
3367    o fix for checkpoint of thermodynamic seaice and bulk_force
3368    o Steph gchem various cleanups
3369    
3370    checkpoint 51h_pre
3371    o fixed some single quotes
3372    o modify gchem pkg to be more versatile
3373    o modifications to clean up dic pkg
3374    o add pkg/cfc
3375    
3376    checkpoint51g_post
3377    o provide links for ARPACK and ADM*TLM
3378    o start removing verification/vero/
3379    o update AD-related stuff
3380      (in particular some IF-statements in model/src/ routines)
3381    o adding to verification/global_ocean.90x40x15/ adjoint of
3382      vector invariant setup
3383    
3384    checkpoint51f_post
3385    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
3386    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
3387      of tracer Green's fucntions for ocean inversion project.
3388    
3389    checkpoint51f_pre
3390    o Added on-the-fly spatial interpolation capability
3391        "USE_EXF_INTERPOLATION" to pkg/exf.
3392      - This is a temporary Cartesian-grid hack until
3393        the super-duper ESMF coupler becomes available.
3394      - See verification/global_with_exf/README for usage example.
3395      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
3396        flags and modified pkg/seaice accordingly.
3397    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
3398        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
3399        non-local transport term.
3400    
3401    checkpoint51e_post
3402    o pkg/mom_vecinv:
3403      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
3404      - add time-ave diagnostic of vorticity advection.
3405    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
3406    o atmospheric geopotential: - include water vapor effect;
3407                                - use p^kappa in p* scaling.
3408    o land pkg: read initial state from files.
3409    o AIM : add stratospheric drag in the upper level
3410    
3411    checkpoint51d_post
3412    o change function ILNBLNK (=> last non-blank char.) to return zero
3413      (instead of the string length) when the string. char is empty
3414    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
3415    o modif's to restore TAMC compatibility
3416      - avoid "_d" constructs in PARAMETER declarations
3417      - avoid interrupting lines by comment lines
3418    o Use cluster local disks for purely local I/O
3419      vs. globally visible disks needed for ctrl stuff
3420      (merged from ecco-branch)
3421      - new active_file_loc... and mdsio_..._loc routines
3422      - affected packages: autodiff, ctrl, grdchk, mdsio
3423    
3424    checkpoint51c_post
3425    o introducing integer flag debugLevel
3426      - debLevZero: suppress all output
3427      - debLevA: standard
3428      - debLevB: equivalent to current debugMode=.TRUE.
3429    o introducing pathname variable mdsioLocalDir for mdsio
3430      that can be specified at runtime
3431      (relevant for cluster I/O to local disk)
3432    `
3433    >>>checkpoint51b_post
3434    adjoint of ptracers
3435    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
3436    o extended state in checkpoint_lev?, etc.
3437    o alternative ctrl/cost with tr1 or ptracer
3438    o new comlev1_bibj_ptracers
3439    o new ptracers.flow
3440    o made ptracers_forcing same as external_forcing_s
3441    o added verification for adjoint with ptracers
3442      - adm. grdchk fail so far
3443      - tlm. grdchk OK
3444      - checked tapelev/comlev recomputations: OK
3445    <<<checkpoint51b_pre
3446    
3447    checkpoint51a_post
3448    o added code for biogeochemistry package
3449      - new pkgs: dic, gchem
3450      - new subroutine in ptracers
3451    o modify code for biogeo packages
3452      - in model/src and pkg/ptracers
3453    
3454    checkpoint51
3455    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
3456      - autodiff, ctrl, exf, grdchk, seaice
3457      kept separate packages
3458      - cost, ecco, obcs
3459    o updating verification/internal_wave, verification/lab_sea
3460      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
3461    
3462    checkpoint50i_post
3463    o Preparing next differentiable checkpoint and sync
3464      of MAIN vs. ecco-branch
3465      - 1st step: this one is differentiable
3466      - 2nd step: next(! not this) checkpoint will have updated packages
3467                  from ecco-branch)
3468    
3469    checkpoint50h_post
3470    o new package "land": provide surface BC for AIM.
3471    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
3472    o AIM: use true log-P extrapolation for near surface temp (= as in
3473        F.Molteni paper) ; update aim.5l_cs output.
3474    o New variable in PARM03 for more flexible pickups
3475    o somewhat cleaned package initialisation sequence for
3476      ctrl/ cost/ ecco/ in packages_... routines
3477    
3478    checkpoint50g_post
3479    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
3480      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
3481      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
3482        made the default because of faster convergence than ADI
3483    
3484    checkpoint50f_post
3485    o exf totally restructured
3486      - replaced all exf_set_ routines by one generic exf_set_gen.F
3487        and made sure it's still differentiable
3488      - split exf_getffields.F into new exf_bulkformulae.F
3489      - exf_inscal_/exf_outscal_ suffixes consistent with field names
3490      - updated adjoint/makefile and relevant verif. accordingly
3491    
3492    checkpoint50f_pre
3493     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
3494          + change Evap over land. (update aim.5l_cs output)
3495     o added missing .cvsignores and made uniform across expts
3496     o changed configuration of tidal_basin_2d expt
3497     o added pkg/debug functions for tracing code in fatal crashes
3498     o tidied pkg/monitor to use MONITOR_OPTIONS.h
3499     o new fn in pkg/monitor to stop model if solution grows too big
3500     o removed lots of single quotes from comments
3501    
3502    checkpoint50e_post
3503    o make KPP work with PTRACERS
3504     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
3505       nearly a copy of kpp_transport_s
3506     - there is no analogue to SurfaceTendencyS, so I have to use
3507       gPtr(of the surface layer) instead
3508    o add a new platform SunFire+mpi (SunFire 15000) to genmake
3509    checkpoint50e_pre
3510    
3511    checkpoint50d_post
3512    o change kpp output from multiple-record state files to single-record state
3513      files analogous to write_state.F
3514    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
3515      analogous to the cg2d-related output.
3516    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
3517      so that writing to internal file fn (with length 512) fails.
3518    checkpoint50d_pre
3519    
3520    checkpoint50c_post
3521    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
3522    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
3523    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
3524    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
3525    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
3526    
3527    checkpoint50c_pre
3528    Merging from release1_p13:
3529    o bug fix for pkg/seaice dynamic solver
3530    o Added SEAICE_initialHEFF to pkg/seaice
3531    
3532    checkpoint50b_post
3533    o store u*,v* in gU,V instead of in guNm1,gvNm1
3534    o in order to put the momForcing out of the Adams-Bashforth:
3535      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
3536      to timestep.F
3537    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
3538    o re-generate output for highly sensitive test-exp:
3539       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
3540    
3541    checkpoint50b_pre
3542    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
3543    o corrected CPP option mismatch in exf_Bulk... functions for case
3544      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
3545    
3546    checkpoint50a_post
3547    o Bug fix for merging between c50 and KPP.
3548      ikey was passed from thermodynamics to kpp_calc via
3549      common block rather than being recomputed in kpp_calc,
3550      in contradiction with new key itdkey.
3551      New key ikppkey created, and tamc.h headers updated.
3552    
3553    checkpoint50
3554    - 2nd step of merge with ecco-branch:
3555      merge changes in ecco-branch back into main trunk
3556    - bug fix in find_alpha
3557    - more storing in gmredi_calc_tensor.F, kpp_routines.F
3558    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
3559    - merged some sliced AD support routines
3560    
3561    checkpoint49
3562    merged from ecco-branch:
3563    o exf:
3564      - Enable initialisation of forcing fields to constant
3565        (runtime) values.
3566      - in exf_getffields.F
3567        Reduce i-/j-loop to interior domain, discarding overlaps.
3568        That also fixes wrong TAF-key computations for key_1, key_2
3569        with bulf formulae.
3570      - exf_init.F modify #ifdef for exf_init_evap
3571      - exf_getffieldrec.F, ctrl_getrec.F
3572        The following INT-usages are not safe:
3573          fldsecs  = int(fldsecs/fldperiod)*fldperiod
3574          fldcount = int(fldsecs/fldperiod) + 1
3575        and were modified.
3576    o autodiff: checkpoint_lev...
3577      - updated storing for bulk formulae (some arrays were missing)
3578      - added state for seaice package
3579      - synchronized with main branch
3580    o DIVA:
3581      Modif.s in
3582      - the_main_loop.F
3583      - the_model_main.F
3584      and added cost_final_restore.F cost_final_store.F
3585      o With these changes, it is possible to fully separate
3586        the first forward run to compute the cost function (mdthe_main_loop)
3587        and adjoint runs over individual DIVA intervals (adthe_main_loop)
3588        into separate model executions.
3589        This enables better tuning of DIVA to given queue sizes.
3590      o Loss of cost function value in consecutive DIVA runs is
3591        fixed by storing to 'costfinal' file.
3592      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
3593        beginning/end of adjoint integration is accounted for.
3594      The current changes apply to TAF-1.4.26.
3595      TAF has one remaining bug, requiring one manual change
3596      (see MITgcm manual).
3597    o cal: synchronized between MAIN and ecco-branch
3598    
3599    checkpoint48i_post
3600    o Changes to restore differentiability of code w.r.t. previous tag
3601      (mostly adding new routines to make list and replacing
3602      pressure by totPhiHyd).
3603    o Updated and merged grdchk package
3604      - has both ADM and TLM checks
3605      - works for single- and multi-proc.
3606      - output cleaned
3607      - worked successfully for parallel DIVA
3608    o genmake:
3609      - Adding -platform=SP4
3610      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
3611    o Modif. for DIVA:
3612      ctrl_unpack should not be called in intermediate DIVA interval.
3613      (similar thing would apply for active files such as
3614      tbar, sbar, psbar, which should not be reinitialised;
3615      only relevant for ecco-branch)
3616    
3617    checkpoint48h_post
3618    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
3619    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
3620    o Added SEAICE_initialHEFF to pkg/seaice
3621    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
3622    
3623    checkpoint48g_post
3624    --- EOS:
3625    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
3626      store total Potential in totPhyHyd for diagnostics & EOS.
3627    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
3628    --- Pressure/geopotential gradient:
3629    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
3630    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
3631      ( changes results of global_ocean_pressure )
3632    o NLFS + z-coord.: add eta*Rho' contribution.
3633    o accurate phiHyd when using interface-W at the middle between 2 centers
3634     ( changes results of ideal_2D_oce )
3635    o includes r* 2nd term in potential gradient.
3636    
3637    checkpoint48f_post
3638    Merging from release1_p12:
3639    o Modifications for using pkg/exf with pkg/seaice
3640      - improved description of the various forcing configurations
3641      - added basic radiation bulk formulae to pkg/exf
3642      - units/sign fix for evap computation in exf_getffields.F
3643      - updated verification/global_with_exf/results/output.txt
3644    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
3645      (SBO) core products, including oceanic mass, center-of-mass,
3646      angular, and bottom pressure (see pkg/sbo/README.sbo).
3647    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
3648      to avoid negative values in shallow regions.
3649      - updated verification/natl_box/results/output.txt
3650      - updated verification/lab_sea/results/output.txt
3651    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
3652    o Added useSingleCpuIO option (see PARAMS.h).
3653    o Updated useSingleCpuIO option in mdsio_writefield.F to
3654      work with multi-field files, e.g., for single-file pickup.
3655    o pkg/seaice:
3656      - bug fix in growth.F: QNET for no shortwave case
3657      - added HeffFile for specifying initial sea-ice thickness
3658      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
3659    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
3660      kpp_transport_t.F, forward_step.F, and the_main_loop.F
3661    o pkg/seaice:
3662      - adjoint-friendly modifications
3663      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
3664    
3665    checkpoint48e_post
3666    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
3667    o dynamics: change definition of computational domain & adapt mom_fluxform
3668      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
3669    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
3670        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
3671        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
3672        global_ocean.90x40x15 global_with_exf global_ocean_pressure
3673        inverted_barometer solid-body.cs-32x32x1
3674      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
3675    
3676    checkpoint48d_post
3677    o in preparation for r*:
3678     a) use pre-computed gradient of hydrostatic potential:
3679        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
3680     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
3681        => affects results of glob_oce_pressure (different truncation error)  
3682      update output.txt of ideal_2D_oce & global_ocean_pressure
3683    
3684    checkpoint48d_pre
3685    o in preparation for r*:
3686      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
3687      pass the 2 comp. of the grad. as arguments to momentum S/R.
3688      but for the moment, only used if it does not change the results.
3689    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
3690    
3691    checkpoint48c_post
3692    Modifications in treatment of initial flux forcing controls
3693    to avoid extra storing of flux fields.
3694    
3695    checkpoint48c_pre
3696    o Added tidal_basin_2d experiment (currently 1D!)
3697    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
3698    
3699  checkpoint48b_post  checkpoint48b_post
3700  o r* coordinate added in #ifdef NONLIN_FRSURF block.  o r* coordinate added in #ifdef NONLIN_FRSURF block.
3701   (modification to pressure gradient not yet implemented)   (modification to pressure gradient not yet implemented)

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