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revision 1.322 by jmc, Tue Jul 6 02:44:27 2004 UTC revision 1.1152 by jmc, Tue Aug 25 16:34:35 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    checkpoint61u
8    o pkg/obcs:
9      - change OB?eta from _RS to _RL and put them into a separate commen block
10      - add code to read OB?eta from a file via obcs_prescribe_read: the code
11        compiles and does not destroy any other experiments, the data is read
12        properly, but the code is not tested in actual applications
13    o ini_mnc_vars.F: if available (ALLOW_CAL), use startTime_1 and 2 to
14      create a meaningful unit attribute for the time coordinate variable
15    o pkg/ebm: add plenty of missing "_d 0" ;
16       update results of experiment global_ocean_ebm (fwd + adjoint tests)
17      Notes: several pieces of code only works for (very) specific set up
18       (domain size, lat range, etc ...); should be documented & stop if one
19       of those assumptions is not meet.
20    o pkg/seaice: add missing "_d 0" in HSNOW initialisation
21       update results of experiments: lab_sea (3 fwd tests + 2 adjoint tests)
22          and offline_exf_seaice (seaicetd + adjoint).
23    o add missing "_d 0" in ShortWave flux penetration (S/R SWFRAC):
24       update results of experiments: lab_sea (4 fwd tests + 3 adjoint),
25        seaice_obcs, global_ocean.cs32x15 (icedyn & thsice) and natl_box (x2).
26    o few changes to pass when compiling with strick checking of arguments
27       across S/R (allow to find few bugs in S/R calls).
28    o pkg/seaice:
29     - seaice_evp: move if-statement out of loop (TEM) at the cost of 11 new
30       2d-fields, for slightly better performance
31    
32    checkpoint61t
33    o pkg/seaice:
34     - remove unused variables in seaice_evp
35     - reduce number of SQRT in seaice_evp and seaice_calc_viscosities
36    o eeset_parms.F, open_copy_data_file.F & ini_parms.F:
37       named file replacing SCRATCH files (for TARGET_BGL & TARGET_CRAYXT):
38       each processor opens a different file (a fix from Matt).
39    o cg2d:
40       use simple EXCH (overlap size = 1 and ignore corners), like in cg3d.F :
41       this reduces number of EXCH calls by 2 when using exch2.
42       For now, keep previous size array for gc2d_nsa.F to avoid Pb with store
43       directives and missing simple EXCH (exch_s3d_rx) adjoint code.
44    o pkg/thsice:
45       add code for Near Infra-Red albedo (from Jeff)
46       (turned on with run-time flag: thSIce_calc_albNIR, in data.ice).
47    o ini_model_io:
48       move (from packages_readparms.F & initialise_fixed.F) to ini_model_io.F
49       MNC & MONITOR initialisation calls; move MNC calls from {pkg}_readparms.F
50       to {pkg}_init_fixed.F for {pkg}= kpp, seaice & shelfice.
51    
52    checkpoint61s
53    o pkg/exch2 (exch2_rxN_cube*):
54       remove last BARRIER (no need to synchronise after getting data from shared
55       buffer (get) as long as any change to buffer (put,recv) is between BARRIER)
56    o change tiling of natl_box (from 2 to 4 tiles) to get it tested with MPI+MTH
57      and generate new output (for the 2 tests) using default rotationPeriod.
58    o pkg/exch2:
59      - always call exch2_*_cube, not exch-1 anymore, if useCubedSphereExchange=F
60        (was already the case with AUTODIFF_EXCH2 defined)
61      - add bj in exch2 arrays and S/R.
62      - can now use pkg/exch2 for regular (non CS) set-up; switch test experiment
63        MLAdjust to exch2 (identical results except with MPI -> truncation diff);
64    o add pkg/longstep for ptracer timestep a multiple of U/V/T/S timestep
65      - adds deltaT argument to the subroutines TIMESTEP_TRACER DWNSLP_APPLY
66        GAD_ADVECTION GAD_CALC_RHS GAD_IMPLICIT_R GAD_SOM_ADVECT
67      - verification experiment natl_box.longstep
68    o build_options: ifort+mpi_aces optfile (following Constantinos advise):
69      allow different versions of ifort (8 or 9) and different versions
70       of mpi (mpich or mpich2) to be used with the same optfile.
71      requires to load a netcdf module and set MPI_INC_DIR (see comments inside
72       optfile). Change testing scripts (example_scripts/ACESgrid) accordingly.
73    o pkg/seaice:
74      fix previous modif (3-level field removed) for old-pickup reading
75    
76    checkpoint61r
77    o pkg/seaice:
78     - clean up the 3-time levels of UICE,VICE,HEFF,AREA in three steps:
79      1. introduce fields for time step (N-1)
80      2. do not use levels 2 and 3 anymore (but keep them)
81      3. replace 3D versions of UICE,VICE,HEFF,AREA by 2D versions. This
82         includes changes to pkg/thsice/thsice_get_velocity.F,
83         model/src/external_forcing_surf.F, pkg/obcs/obcs_apply_seaice.F, and
84         pkg/obcs/obcs_apply_uvice.F.
85     - completely remove code for leap-frog time stepping for second order
86       advection
87     - adjusted adjoint accordingly;
88       gradient checks have improved by an order of magnitude!
89    
90    checkpoint61q
91    o pkg/seaice: fix bug in free slip boundary conditons for LSOR solver
92     - the boundary conditions along open boundaries are unclear, because the
93       associated masks are set to zero and are thus treated as closed when
94       applying the slip-boundary conditions.
95     - move initialisation of grid variables from seaice_init_varia to _fixed
96    o adding doc/diags_changes.txt
97    o model/src:
98      do_the_model_io: rename few pkg S/R which are called from do_the_model_io,
99       to avoid "_diags" naming if no relation to pkg/diagnostics.
100      ini_theta,ini_salt: fix (at least compile the code) reading from NetCDF
101       file and only call PLOT_FIELD_XYZ if debugMode=T.
102      remove few PLOT_FIELD_XY calls outside initialisation.
103      remove few unnecessary BARRIER.
104    o pkg/salt_plume: add SaltPlumeSouthernOcean to allow disabling
105      of salt_plume package in Southern Ocean
106    o pkg/thsice:
107     - fix hOceMxL in overlap (needed for sea-ice advection);
108       update output of experiment global_ocean.cs32x15.icedyn.
109    o pkg/seaice:
110     - make the (placeholder-)tracer IceAge a little more meaningful
111      by avoiding ridging of age due to convergent ice flow
112     - add diagnostics for surface temperature, atmospheric and oceanic
113       heat flux, and atmospheric and oceanic ice growth
114    
115    checkpoint61p
116    o eesupp (global_max & global_sum):
117     - add one more element to buffer (start at index 0) for GL_MAX/SUM output;
118     - remove starting & endding barrier (no longer needed)
119    o pkg/mdsio, writelocal:
120       works also in multi-threaded when LOCBIN_IO_THREAD_SAFE is undefined
121       (remove the STOP): uses shared buffer IO to store data from all threads
122       and then let master-thread write nThreads tiles.
123    o pkg/mdsio (read/write field):
124     - tiled IO done in 1 piece (all levels at a time);
125     - new header file "MDSIO_BUFF_3D.h" with 3-D buffers.
126     - multi-threaded: allow to read/write local (non-shared) array
127       (was already working with singleCpuIO ; now works also without);
128       => no longer needs barrier call after reading a file (added inside
129       mds_read/write field).
130     - move barrier calls outside gather/scatter_2d to mds_read/write_field
131    o pkg/obcs/exf
132      - exf_getffieldrec.F: add a few ". _d 0" and
133                            add code to catch the case fldperiod = 0.  
134      - obcs_precribe_read.F: change if statements so that they match
135                              the variable type (_RL)
136      - add a separate exf_iprec_obcs to exf_set_obcs (by default equal to
137        exf_iprec) as part of namelist EXF_NML_01
138    o pkg/mdsio:
139      - read/write tiled (local) files: read/write 1-level tile chunk at a time
140        (instead of segment of length sNx); expected to speed up tiled IO.
141    o pkg/exch2:
142      - take buffer copy from/to array out of S/R exch2_send/recv into new
143        S/R exch2_put/get ; Exch of local variable now works with MPI+MTH
144        (tested by removing commom block statement in SOLVE_FOR_PRESSURE.h).
145      - ad version of send/recv no longer needed (but needs exch2_ad_put/ad_get)
146      - simplify argument list of S/R exch2_get_uv_bounds and exch2_get_scal_bounds
147        (which replaces exch2_get_recv_bounds & exch2_get_send_bounds) by
148        including Topology header file (and common blocks).
149      - implement EXCH_IGNORE_CORNERS in scalar exchange (rx1);
150        remove 2nd exch call in exch2_s3d_rx (no longer needed).
151      - document S/R arg. list (+ update some comments)
152    o pkg/seaice:
153      - added SEAICE_CLIM_AIR code, which permits modulation of surface air
154        temperature and humidity over sea ice based on climatological values.
155      - clean up computation of Hibler+Bryan (1987) stress coupling for the case
156        of LSR (this change is expected to change the results slightly because now
157        it uses slightly difference moduli from the second last LSR solution, but
158        that is more consistent with the stress computations; this part of the code
159        is not tested in the verification experiments)
160      - fix diagnostics for flux of ice in case of B-grid
161      - turn strain rates eij and press into global fields within global
162        common block in SEAICE.h for more straighforward diagnostics
163      - fix diagnostics for principal stress components, press, zeta, eta
164        to give something meaning full
165    o change tiling of global_ocean.cs32x15 (12 tiles, 32x16) and generate
166      new output (all 4 tests) using default rotationPeriod.
167    o pkg KPP:
168      - add flag (LimitHblStable) to avoid limiting BL depth under stable conditions
169      - fix vertical indices in RI_IWMIX (match between KPP grid from 0 to Nr+1
170        and normal grid from 1 to Nr)
171    o Fix computations of L4rdt in mom_calc_visc.F
172    o eesupp:
173      new S/R ALL_PROC_DIE (like EEDIE, without irrelevant threads err msg):
174      should be called before a "stop" if we know that all process are going
175      to stop; if one Proc does call this S/R, will hang in MPI_FINALISE.
176    
177    checkpoint61o
178    o pkg/exch2: change check_depths to issue just a warning (instead of error+stop)
179    o model/src/ini_curvilinear_grid.F:
180       compute angleSin/CosC when they are not read from a file
181    o pkg/seaice:
182       add pseudo time stepping for LSOR
183    o pkg/exch2:
184       temporary fix for exch2_s3d_rx; update results of exp. hs94.cs-32x32x5.impIGW
185    o pkg/seaice:
186       Adding separate sea ice albedo, drag coefficients, and HO in Southern
187       Ocean from those in Arctic Ocean.  See *_south in SEAICE_PARAMS.h
188    o SingleCpuIO:
189       fix bug put before chkp61n (May 11), when more than 2 MPI cpu are used.
190    o pkg/seaice:
191       put exchanged variable in (local) common block for MPI+Multi-Threads
192       to work (necessary with exch1, and for now with exch2 too).
193    o verification: to get more experiments tested with mpi, mth and mpi+mth,
194      change tiling of:
195       aim.5l_Equatorial_Channel, aim.5l_LatLon, dome, exp4, global_ocean.90x40x15,
196       hs94.cs-32x32x5, MLAdjust, offline_exf_seaice & tutorial_plume_on_slope
197      update output of exp:
198       exp4, global_ocean.90x40x15(+.dwslp), MLAdjust(all 5),
199       tutorial_plume_on_slope and hs94.cs-32x32x5 (use default rotationPeriod)
200      + ideal_2D_ocean: use default rotation period + test Global_Sum_SINGLECPU
201                       (note: output.txt generated on faulks using only 1 tile)
202    o eesupp & mdsio (SingleCpuIO):
203     - remove MISSING_TILE_IO (from MDSIO_OPTIONS.h), replaced by run-time
204       parameter "W2_useE2ioLayOut" (read from file "data.exch2").
205       Note: was not effective for globalFile & useSingleCpuIO=F; now fixed.
206     - move MDSIO_SCPU.h (pkg/mdsio) to EEBUFF_SCPU.h (eesupp/inc).
207     - fix GLOBAL_SUM_SINGLECPU when using Exch2; re-use same buffers and same
208       gather/scatter S/R as with SingleCpuIO (=> 1 less 2D global RL array).
209    o pkg/exch2:
210     - new code to set-up W2-Exch2 topology (replace matlab-topology-generator):
211       read parameter file "data.exch2" if it exists; otherwise try default regular
212       cube without blank-tile; new header file "W2_EXCH2_SIZE.h";
213     - update matlab-topology-generator (exch2_setup_cs6_print.m) to be compatible
214       with new code (not to be used, just as a backup solution).
215     - add examples (e.g., for lat-lon-cap_120) of parameter file "data.exch2"
216       in utils/exch2/input.
217    
218    checkpoint61n
219    o eesupp & mdsio (SingleCpuIO):
220      - move mapping to global io-buffer inside gather_2d/scater_2d: this save
221        memory (1 less 2D global RL array); skip 1 buffer copy; and only send/
222        receive real*4 array (instead of real*8) to read/write 32.bit files.
223        (new template for gather_2d/scater_2d, new set of S/R MDS_PASS_R4,8toRL,S
224         and remove new mapping S/R)
225    o pkg/mdsio: in preparation for topology-generator within pkg/exch2:
226      - Change declaration of SingleCpuIO buffer, reduced to only 1 dim.:
227        xyBuffer_size, which is set to W2_ioBufferSize from W2_EXCH2_PARAMS.h
228        when using exch2. Add S/R to map global io-buffer to global model array.
229      - uses exch2_global_Nx,y instead of exch2_domain_nxt,nyt.
230    
231    checkpoint61m
232    o write_utils : change WRITE_1D_R8 to WRITE_1D_RL
233      and add 3 other S/R for other types (R4,R8,RS).
234      Change calls to WRITE_0D/1D_R[4,8,S,L] to match the type of argument.
235    o eesupp/inc/CPP_EEMACROS.h (EXCH & GLOBAL_SUM/MAX macros):
236     - ensure suffix (_R4,_R8,_RS,_RL) correspondance between macro and S/R ;
237     - reduce number of macro definitions (keep only those which are used);
238       can always call directly the corrresponding S/R if needed.
239     - everywhere in the code: change macros (EXCH & GLOBAL_SUM/MAX) suffix
240       _R4/_R8 to _RS/_RL when applied to _RS/_RL variable.
241     Fixed wrong type of arg in:
242       atm2d/put_ocnvars.F cheapaml/cheapaml.F ocn_compon_interf/ocn_apply_import.F
243       ctrl/ctrl_map_ini_ecco.F seaice/seaice_do_diags.F seaice/seaice_model.F
244     To fix: global_sum of var in common block is wrong (multi-threaded) in:
245       dic/dic_atmos.F ebm/ebm_area_t.F ebm/ebm_zonalmean.F sbo/sbo_calc.F
246     To fix: aim_v23/aim_do_co2.F (BARRIER & GLOBAL_SUM within bi,bj loops)
247    o adjustment.cs-32x32x1: test "blank tiles" when compiling with mpi; 2nd
248      "nlfs" mpi test is going to stop when checking for unconnected tile egdes.
249    o eesupp/src: new S/R to stop everyone when 1 (or more) Proc. find an error
250    o pkg/exch2: new S/R EXCH2_CHECK_DEPTHS to check that unconnected tile
251      edges are closed (zero depth); might happen with "blank tiles";
252      for now, disabled if using OBCS.
253    o tools/gemake2: delete modifs from March 27-29 2009 (with option "-mpi":
254      link *_mpi files from "MODS" dir) to return to a strait-forward behavior.
255    o move read_write.F to write_utils.F ; new parameter (maxLengthPrt1D)
256      to reduce length of 1.D array print in STDOUT.
257    o adjustment.cs-32x32x1: changed to oceanic test with 1 continent
258      + use 48 tiles (16x8): this will allow to test "blank tiles".
259    o start to test MPI + multi-threaded (change testreport to skip tests
260      where number of tiles do not match).
261    o genmake2: add option "-omp" to turn on Open-MP ;
262      passed to testreport (if using -mth) ; merge few (*+mth) optfiles.
263    o pkg/exch2 (+ utils/exch2): ignore blank tiles (instead of removing them)
264      and keep the original tile numbering. Note: compatible with old
265      W2_EXCH2_TOPOLOGY.h & w2_e2setup.F topology files.
266    
267    checkpoint61l
268    o Overlaps had been forgotten in calculating ijk keys : fixed
269    o fix cyrus makedepend for gcc 4.4
270    o experiment fizhi-cs-aqualev20:
271      switching to new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE)
272      and generate new output. Note: new output is much closer to the old
273      one (v1.8) generated with pgf77 -O2 on Mar 14 2007 than it is from
274      the previous one (v1.9) generated with pgf77 -O0 on Jun 13 2007.
275    o pkg/fizhi:
276     - change to avoid indices going deliberately over array-bounds
277     - remove unnecessary MPI stuff
278     - perpetual spring equinox with "#define FIZHI_USE_FIXED_DAY"
279     - new version of S/R GETPWHERE available with #define TRY_NEW_GETPWHERE:
280       does not go over array-bounds and therefore returns reliable output.
281     - in fizhi_driver.F & fizhi_turb.F, fix "get_alarm" calls:
282       this S/R has 4 output arguments, which are used inside "get_alarm";
283       when it is called with the same variable "ndum" in place of several
284       output arguments, this produces weird side effect inside "get_alarm"
285      (e.g., datein=dates(n) is overwritten by timein=times(n) since both
286       datein & timein, resp. 2nd and 3rd arg., are pointed to the same "ndum"
287       address) and produces error.
288    o tools/gemake2: (March 27-29 2009)
289      with option "-mpi": link *_mpi files from "MODS" dir (this is what
290      testreport does).
291    o lab_sea experiment: change from 2x1 tiles to 2x2 tiles and regenerate output
292    o pkg/seaice: fix bug in new version of S/R SEAICE_LSR.F:
293       update lab_sea.lsr & lab_sea.salt_plume results
294    o pkg/seaice:
295      Major overhaul of the LSOR solver: change discretization from original
296      finite differences to finite volume. The old routine is still in the
297      file seaice_lsr.F and can be turned on with the CPP-flag
298      SEAICE_OLD_AND_BAD_DISCRETIZATION
299      Along with this change, the discretization of the strain rates is changed.
300      The same flag turns on the old discretization in seaice_calc_strainrates.F
301      All verification experiments with seaice are affected (except for
302      seaice_exf_offline); global_ocean.cs32x15/input.icedyn recovers the old
303      results by setting the above flag.
304      Further changes involve changes in defaults:
305      - ALLOW_FLOODING is defined and turned on by default
306      - SEAICEadvSnow = .true. is now the default
307      - SEAICEadvSalt = .true. is now the default
308      - SEAICEadvAge  = .true. is now the default
309      - SEAICE_clipVelocities  = .false. is now the default
310                                         (as per J. Zhang's recommendation)
311      - B-grid, and thus not tested: SEAICE_TEST_ICE_STRESS_1/EXPLICIT_SSH_SLOPE
312        is defined, SEAICE_TEST_ICE_STRESS_1 is renamed into SEAICE_BICE_STRESS
313      - seaice_growth: replace computation of UG by a simple copy from wspeed
314    
315    checkpoint61k
316    o pkg/seaice: a few bug fixes mostly concerning the metric terms:
317      seaice_lsr: fixed a few metric terms,
318                  affects lab_sea.lsr, lab_sea.salt_plume, seaice_obcs
319                  add more debugging diagnostics
320      seaice_evp: removed superfluous many metric terms of FV discretization
321                  of stress divergence
322                  affects lab_sea, lab_sea.hb87
323      seaice_ocean_stress: removed superfluous many metric terms of FV discretization
324                  of stress divergence for non-evp solver
325                  (this part is not tested anywhere)
326      seaice_calc_strainrates: fixed a bug in no-slip boundary conditions,
327                  they were effectively only half slip
328                  affects lab_sea.hb87
329      updated all relevant verification experiments (except lab_sea//output_adm.txt
330        which was left over, but fails at level 7 & 6)
331    
332    checkpoint61j
333    o pkg/seaice: turn a few hard wired parameters into run time parameters
334    o pkg/seaice/exf/monitor: turn netcdf coordinate variable T into model
335      time in seconds as promised by the usints in seaice_monitor and exf_monitor
336    o pkg/mnc: fix the coordinate variables for multi-tile curvi-linear grids
337      that are not cubed-sphere grids
338    o pkg/seaice: fix a bug for the rare case of SEAICE_VECTORIZE_LSR
339    o pkg/ctrl:
340      fix bug in ctrl_depth_ini.F (EXCH_XYZ was applied to 2-D field xx_r_low)
341    o non-hydrostatic (calc_gw.F):
342      fix viscA4 on CS-grid + fix diagnostics: Wm_Diss & Wm_Advec
343      update output of exp. global_ocean.cs32x15.viscA4
344    o remove backward compatibility for thetaMin,phiMin
345      (replaced by xgOrigin,ygOrigin on Jan 27, 2009)
346    o pkg/exf: fix a serious bug in exf_set_uv.F: do a rotation of the
347      interpolated wind field not only for curvilineargrid=.true., but also
348      for a rotated grid (rotateGrid=.true.)
349    o pkg/exf: add capability to bypass interpolation for runoff
350      by setting yet another CPP-flag
351    o eesupp/src, B-grid exchange:
352      add simple (6 tiles, non MPI) CS exch + standard interface S/R.
353    o autodiff
354      new CPP option ALLOW_TAMC_SINGLEPREC_COMLEV
355      allows to switch to single-prec common blocks;
356      corresponding switch occurs in tamc.h, integer isbyte
357      TAF store directivs "byte" and "kind" seem equivalent;
358      Most tamc.h have been updated correspondingly.
359    
360    checkpoint61i
361    o autodiff:
362      fix autodiff_sore/_restore indices for obcs
363      (spotted by I. Hoteit, M. Mazloff)
364    o pkg/autodiff, pkg/ctrl:
365      Add flag to reduce all tapelev I/O to single-prec.
366      In data.ctrl set
367        doSinglePrecTapelev = .TRUE.
368    o model/src/ini_curvilinear_grid.F, new grid-file format without EXCH2:
369      check in hack for SX8 compiler (for dxV, dyU); remove it afterwards.
370    o pkg/shelfice: fix bug with SHELFICEconserve flag, prepare for
371      real fresh water flux (not yet)
372    o pkg/mdsio & rw:
373     - add argument & option to S/R MDS_WRITEVEC_LOC (avoid Open/Close & write-meta)
374     - add simple interface S/R to MDS_WRITEVEC_LOC in pkg/rw: WRITE_GLVEC_RX.
375    o pkg/flt:
376     - replace FLT_INIT by 3-steps standard initialization S/R: readparms,
377       init_fixed & ini_varia.
378     - clean-up & simplify linear interpolation S/R:
379       move flt_bilinear.F -> flt_interp_linear.F ; add arg. myThid.
380     - fix some indices (mainly vertical index) ; add IMPLICIT NONE.
381     - more efficient I/O, using new options of MDS_WRITEVEC_LOC S/R.
382     - add vert. coordinate & horiz. indices to output files.
383     - change vertical position in initial condition, from index to depth [m].
384     - store horizontal (decimal) indices i,j in common block (instead of coord. x,y)
385       (easier to get to a curvilinear grid) ; delX,delY no longer used.
386    o pkg/ggl90: a few modifications:
387     - fix bottom boundary condition, and interpolation of KappaE
388       near top and bottom
389     - use same set of viscosity/diffusivity for TKE/momnetum/tracer
390     - add smoothing option as in Blanke and Delecluse (1993) (--> ALLOW_GGL90_SMOOTH)
391     - add a few options for mixing-length upper limit (--> mxlMaxFlag)  
392    o rename thetaMin,phiMin -> xgOrigin,ygOrigin
393      (maintain temporary backward compatibility, until next checkpoint)
394    
395    checkpoint61h
396    o pkg/diagnostics with "periodic averaging diagnostics":
397      fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
398    o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
399    o pkg/obcs: fix loop ranges for balancing code
400    o pkg/flt:
401     - improve criteria for finding which tile owns a float.
402     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
403    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
404      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
405      with ocean biogeo)
406    o pkg/flt:
407     - do some cleaning and fix the restart ;
408     - add output.txt in flt_example/results to get this pkg tested.
409    o genmake2: add an EXTENDED_SRC option and flag.
410       for now, cannot be turned on on command line (only through genmake_local)
411    o pkg/mdsio: read/write vector:
412     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
413     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
414       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
415     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
416      (drop to 4 digits matching for grad). But this test does not look very
417      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
418    
419    checkpoint61g
420    o pkg/flt:
421      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
422       + make OPTIONS file more standard.
423      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
424      - fix _BYTESWAPIO CPP-Flag
425      - standard reading of file-parameter "data.flt"
426      - fix argument list of S/R FLT_RESTART
427      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
428    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
429    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
430      a still unfixed compiler/optimization bug
431    
432    checkpoint61f
433    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
434      update results of global_ocean.cs32x15.icedyn test.
435    o move getcon.F from model/src to pkg/fizhi.
436    o pkg/exf: add parameter for extrapolation of temp up to the surface
437       and option to prevent negative evap (in bulk_largeyeager04 only).
438    o Prather Advection scheme: fix tracer conservation for divergent flow
439      (e.g., when using NonLin Free-Surface).
440    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
441    o gmredi (Visbeck-variable-K):
442     - add more parameters to Visbeck-variable-K.
443     - use a 5 points average for dSigmaR in Visbeck-K calculation
444       (more "homogenous": same stencil and same weights as in dSigmaH)
445     - update output of ideal_2D_oce experiment.
446    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
447      (#undef REAL4_IS_SLOW)
448     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
449       coordinate variable
450     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
451       (surface forcing fields), removes some of the functionality
452     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
453     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
454       probably not all: copy _RS surface flux fields to RL field before
455       calling DIAGNOSTICS_FILL
456     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
457       real*4 (CALL EXCH_*_RS) versions.
458     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
459       (generate new output).
460    
461    checkpoint61e
462    o gmredi (Visbeck-variable-K):
463      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
464      - change computation of Visbeck-K where Slope > Smax :        
465        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
466        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
467    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
468      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
469    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
470    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
471      does not become too large (to avoid precision problems in implicit-diffusion
472      solver); update ideal_2D_oce output.
473    o pkg ggl90:
474      - in ggl90_cal.F: compute only one set of visc/diff, used to
475        step forward TKE/T/S/momentum
476      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
477        have Prandlt =1)
478    o gmredi (fm07):
479      - add lower limit on Transition layer thickness + lower limit on 1/lambda
480      - allow to set few more params from data.gmredi
481    o pkg ggl90:
482          - add missing sqrt(2) factor in computation of mixing length
483            scale in ggl90_calc.F
484            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
485    
486    checkpoint61d
487    o adjoint modifs
488      - adapt to new field rhoInSitu
489      - allow to revert from StoreDynVars2D, StoreDynVars3D
490        to individual fields
491        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
492    o store 3-D (in-situ) density in commom block (DYNVARS.h)
493     - save 1 rho computation.
494     - no longer modify T & S inland when using down_slope pkg.
495    o gad_som : allow to switch to SOM advection for T & S without corresponding
496      pickup files (using new S/R: MDS_CHECK4FILE).
497    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
498      (for useSingleCpuIO to work in multi-threaded)
499    o pkg/shelfice:
500     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
501       with SHELFICEtopoFile in data.shelfice
502     - move code for reading ice shelf topography and modifying hFacC into separate
503       subroutines of the shelfice package
504     - separate initialisation of "fixed" and "variable" variables
505     - kTopC is not (yet) replaced by kSurfC, although this is possible
506    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
507    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
508      and rename:
509      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
510      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
511    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
512    
513    checkpoint61c
514    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
515      to add mass source/sink of fluid in the interior (3-D generalisation
516      of oceanic real-fresh water flux).
517    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
518    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
519    o new pkg: down_slope
520      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
521      - presently, modify T & S inland (dwnslp_calc_rho.F).
522        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
523      - implementation for ocean in P-coords not tested.
524      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
525    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
526      (to facilitate conversion of oceanic pkg to p-coordinate).
527    o change FIND_RHO to FIND_RHO_2D :
528      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
529    o new pkg: cheapaml
530    
531    checkpoint61b
532    o exch2:
533      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
534      - no longer depend on the order sequence (N,S,E,W).
535      - 3rd exchange no longer needed (tested with 24 tiles).
536      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
537      - exch_UV_A-grid readily available (but not yet tested).
538      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
539      (both are no longer needed) in exch_uv: no effect in forward run; but
540       get truncation error differences with adjoint exch.
541    o exch2:
542     - change index-bounds storage (moved from target to local tile,
543       more intuitive this way) ; rename/remove some variables.
544     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
545    
546    checkpoint61a
547    o exch2/matlab-topology-generator:
548      fix bug in index bounds for N-S internal exchange (hard to tell if this
549      had any effect on the solution).
550    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
551      is exceeded
552    o testreport: modify syntax of awk, so that it works also with
553      awk, and not only with nawk and gawk
554    
555    checkpoint61
556    o autodiff
557      Change default for TAF usage by removing argument '-nonew_arg'
558      This changes TAF subroutine argument list (ordering of active var.)
559      Omission of this flag leads to incompatibility w.r.t. TAMC
560      To restore TAMC-compatibility, need following modifs:
561      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
562      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
563      Tested TAF version is 1.9.22
564      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
565    
566    checkpoint60
567    --->>> This is the last checkpoint for which generating the adjoint
568    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
569    --->>> by default.
570    --->>> Future checkpoints will ommit this flag by default.
571    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
572    o pkg/grdchk: Add gradient check to etan0 perturbations.
573    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
574    o pkg/autodiff: more flexibility in zeroadj.
575      model/src: modifying do_oceanic_phys.F accordingly.
576    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
577    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
578      special setup of gmredi for which the adjoint is stable
579      enough for parameter optimization.
580    o bridging the gap between eddy stress and GM.
581      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
582          along with a change in CPP option (now ALLOW_EDDYPSI).
583      -> when using GM w/ GM_AdvForm:
584          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
585          is applied either in the tracer Eq. or in momentum Eq.
586          depending on data.gmredi (intro. GM_InMomAsStress).
587      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
588      The key modifications are in model/src/taueddy_external_forcing.F
589      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
590    
591    checkpoint59r
592    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
593      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
594      fix option to read coriolis(@ cell-corner) from files with CS-grid.
595    o pkg/mnc: add some attributes to standard 1D-coordinate variables
596    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
597      mass points, when using mnc for output
598      - add runtime parameter (missing_value, missing_value_int) to override
599        default (which is the value of getcon('UNDEF'))
600    o pkg/mnc: prepare mnc for the actual use of missing values with the
601      diagnostics package: small fix in mnc_cw_readwrite.template and more
602      initialisation of never used fields
603      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
604      versions
605    o pkg/thsice/thsice_ini_vars.F added default initial values so that
606      thermodynamics sea ice solver does not blow up when some initial fields
607      are missing.
608    o move from external_forcing_surf.F to ini_forcing.F
609      the p-coord. hack consisting in using pLoad to set phi0surf ;
610      update output of tutorial_global_oce_in_p (affected @ truncation level).
611    o Freshen up a bit hs94.1x64x5, notably:
612      remove rotationPeriod and tRef=5*0. (adjoint only), and add
613      exactConserv=.TRUE.
614    o pkg/generic_advdiff:
615      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
616      applies to files where Temperature & Salinity 2nd Order moments are used.
617    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
618      this uses a dynamically allocated internal state data structure
619      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
620      and requires a fortran 90 compiler
621    
622    checkpoint59q
623    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
624       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
625    o Refresh tutorial_global_oce_biogeo, notably:
626      - change bathymetry (put back seamounts in ACC, use hFacs)
627      - change EOS (POLY3 --> JMD95Z)
628      - use Bryan-Lewis vertical diffusivity
629      - use multidimensional advection
630      - remove old virtual virtual in dic pkg, now done through ptracer pkg
631      - change a couple of parameters in dic pkg
632    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
633    o pkg/obcs: change default to OBCSfixTopo = .true.,
634      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
635      - replace "debugMode" with "debugLevel .GE. debLevB"
636    o implementation of TAF directives for gchem,cfc,dic
637    o remove "exp5" (replaced by tutorial_deep_convection).
638    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
639      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
640      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
641      --> changes results in exp4, seaice_obcs
642    o tutorial_deep_convection :
643      update the set-up and increase resolution and domain size ; start
644      from pseudo initial conditions = output at t=120mn in order to see
645      something happening when running testreport.
646    o pkg/seaice: add os7mp as an advection scheme
647                  add check for advection schemes
648                  add a flag for restoring T and S underneath sea ice
649    o pkg/my82: add netcdf-support and diagnostics
650    o thsice pkg:
651      - Now hsMax limits snow height by turning it into ice following
652        flooding scheme (and now conserving energy)
653      - Slight rewriting of the formula in thsice_calc_thick.F
654      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
655      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
656    
657    checkpoint59p
658    o gchem / dic / cfc :
659      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
660      - add new parameter files: "data.dic" & "data.cfc" ;
661      - various re-arrangement in initialisation & header file ;
662      - fix tutorial_global_oce_biogeo for multi-threaded test.
663    o pkg/dic: test for "pickup_dic" file when restarting ;
664      if no pickup-file, can restart with a re-initialised pH (same as it did
665      before) providing pickupStrictlyMatch is set to False.
666    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
667      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
668    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
669      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
670    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
671     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
672       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
673    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
674       scheme to use for vorticty-term ;
675     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
676       (with default selectVortScheme, return to original discretisation)
677     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
678    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
679    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
680      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
681      also fix diagnostics VISCAHW & VISCA4W.
682    
683    checkpoint59o
684    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
685    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
686      move a few statemens out the main loop into separate loops
687    o pkg/shelfice:
688      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
689        (kg/m^2/s), does not break tests, because in verification/isomip,
690        rhoConstFresh=rhoConst (by accident)
691      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
692      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
693        new file model/src/seawater.F, so that they are available for all pkgs.
694      - convert potential temperature into in-situ temperature. This changes the
695        isomip tests => update tests
696    o add a flag writePickupAtEnd (default=true) to be able to suppress
697      writing a pickup at the last timestep
698    o tools/mpack-1.6 :
699      - disable automake (not working) and autoconf (not needed).
700      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
701        also cleaner with much less compilation warnings.
702    o pkg/profiles:
703      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
704      (for "less than 32 characters name" compiler requirement)
705    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
706      conditions that have a different sampling frequency than S/T/U/V obcs
707    o pkg/diagnostics (stats-diags):
708      - fix global Min/Max in case 1 processor get only empty tiles
709    o genmake2: replace (4 times)
710         make genmake_tc_1.o >> genmake_warnings 2>&1
711      with
712         COMM="$CC $CFLAGS -c genmake_tc_1.c"
713         echo $COMM >> genmake_warnings
714         $COMM >> genmake_warnings 2>&1
715      to make genmake2 always see the value of CC as specified in the optfile.
716    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
717      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
718      - modify verification advect_cs test to test SOM-advection on CS-grid.
719    o pkg/ctrl:
720      - Rewrite of ctrl_map_ini_ecco.F,
721        introducing a generic routine (ctrl_map_ini_gen.F).
722      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
723    
724    checkpoint59n
725    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
726      number in dedicate array "hdiag":
727      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
728        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
729      - many small changes (integer format) for large number of diagnostics
730      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
731        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
732    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
733      usingSphericalGrid, this allows to define the rotated grid coordinates
734      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
735      geographical coordinates according to the inverse of the rotation defined
736      by the Euler angles, so that Coriolis parameter and online-interpolation by
737      exf works with the geographical coordinates on XC/YC/XG/YG.
738      Naturally, this feature does not work with all packages, so some
739      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
740      profiles), because there the coordinates are assumed to be regular
741      spherical grid coordinates.
742    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
743      - introduce isopycnal diffusion coefficient control.
744    o tools/adjoint_options:
745      - additional control vector components.
746    o pkg/mnc: have mnc create marginally meaning full coordinate variables
747      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
748    o pkg/mypackage:
749      - add example of read/write pickup for state-var ;
750      - add entry points to the main code for state-vars diags & write-pickup.
751    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
752      transitions for useExfYearlyFields
753      - add new subroutine that determines the file to read from for
754        use*YearlyFields = .TRUE. and .FALSE.
755      - add a verification experiment to global_with_exf that tests
756        useExfYearlyFields with USE_EXF_INTERPOLATION defined
757    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
758      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
759      subroutines (which could be generated from a template, because they are
760      almost identical), for now they are included in obcs_prescribe_read.F for
761      simplicity
762    o pkg/exf:
763      - add a little more diagnostic to exf_interp_read (in analogy to
764        mds_read_field, can be turned off with debugLevel < debugLevA=1)
765      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
766        ugly but fast by unrolling short inner loops, inserting a unroll=8
767        directive in routine lagran, and splitting a loop and making do while the
768        outermost loop (the latter requires the intoduction of index arrays)
769    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
770    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
771      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
772    o verification/seaice_obcs: updated for restart test and latest options
773    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
774      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
775      for now this is only available for the C-grid code and also within
776      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
777    
778    checkpoint59m
779    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
780      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
781    o gad_som : fix flux output (& diagnostics) to have same units as other  
782      advection scheme fluxes (was previously multiplied by deltaT).  
783    o added verification/seaice_obcs both to test seaice open boundaries
784      and to provide an example matlab scrpt for generating them
785    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
786    o pkg/salt_plume: clean up salt_plume_frac.F to
787      remove redundancy in PlumeMethod 1 and 4
788    o pkg/kpp: added saltplume diagnostics
789    o pkg/obcs and pkg/seaice:
790      - do not set uice and vice to zero when OB*icefile are unspecified
791      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
792      - moved seaice tracer obcs after call to seaice_growth
793    o pkg/salt_plume: added various options for salt plume depth
794      criterion and for vertical distribution of the salt
795    
796    checkpoint59l
797    o pkg/ptracers: new version of ptracers pickup:
798      read meta file and write only fields which are needed to restart.
799      ( same logic as main pickup file ; also using pickupStrictlyMatch )
800    o pkg/seaice:
801      - add timescale for melting due to warm mixed layer as a means of
802        setting SEAICE_availHeatFrac more conveniently
803      - add a CPP-flag/runtime parameter check for flooding algorithm
804      - reformulated availHeat in seaice_growth.F to be independent of AREA
805    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
806      unit changes
807    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
808    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
809      SX vector computer.
810    o pkg/seaice:
811      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
812        seaice forcing fields can now be read only through pkg/exf
813      - removed some unused halos
814    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
815    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
816      or U/VICE from U/VWIND before computing U/VSTRESS
817    
818    checkpoint59k
819    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
820      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
821    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
822      all experiments pass when compile with un-initialised var. checking option.
823    o added pkg/salt_plume
824    o script to test restart (for now, in MITgcm_contrib/jmc_script)
825    o pkg/seaice: new read/write pickup version.
826      read meta file and write only fields which are needed to restart.
827      ( same logic as main pickup file ; also using pickupStrictlyMatch )
828    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
829    o lab_sea.hb87: modify the domain & update output.hb87.txt :
830      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
831      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
832      process. Fixed here by closing the domain at the Northern boundary.
833    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
834    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
835      a set of consecutive levels in/from a 3-D array.
836    o pkg/ptracers:
837      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
838      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
839    
840    checkpoint59j
841    o in pkgs: dic, obcs, offline, rbcs:
842      standard way to compute coeff. for time interpolation between 2 time reccords
843      which retains full precision (& make results less dependent on compiler).
844      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
845    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
846      packages instead of reading ice cover and wind speed separately
847    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
848     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
849      to allow to compile customized code before the update)
850    o cleaning-up:
851      - fix CPP instruction syntax in pkg/obcs
852      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
853        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
854      - fix some threads issue in IO parts.
855    o pkg/dic:
856      - add tons of "_d 0" (--> much better testreports !)
857       and then update outputs of tutorial_global_oce_biogeo
858    o pkg/mom_fluxform:
859      add a special version of momentum advection intended to conserve momentum
860      next to a bathymetry step or a coastline edge. (default = off = #undef)
861    o new read/write pickup version:
862      - for now, only implemented for main (mdsio) pickup file.
863      - write out only what is needed to restart; merge pickup_nh , pickup_ph
864        and main pickup together.
865      - read meta file; read only what is needed to restart; stop if a field
866        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
867        if it make sense (even if the restart is not perfect).
868      - if no meta file, assume that pickup to read corresponds exactly to
869        a pickup that would currently be written.
870      - read pickup written in the old format (until checkpoint59i) if it
871        recognizes an old meta file (no field-list).
872      - add a meta file in exp. which starts from a pickup: 2 cases:
873        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
874         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
875        b) a meta file describing the content of the associated pickup file
876         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
877    o pkg/mdsio & pkg/rw:
878      - new routine to read a meta file ; new set of routine to read
879        Multiple-fields file (with meta file).
880    o added open boundary conditions capability for seaice
881        HSNOW, HSALT, UICE, and VICE
882    
883    checkpoint59i
884    o adjoint:
885      * fix multiDimAdvection adjoint
886        (partial recomputation problem by TAF for fVerT(:,:,kDown)
887        and comlev1 size definition (maxpass vs. max. number of tracers)
888      * verification/global_ocean.90x45x15 adjoint now tests
889        NLFS and multiDimAdvection using DST3 (=30)
890      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
891    o pkg/kpp: add "_d 0" to real constant (if missing);
892      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
893      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
894    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
895      for internal parameters related to restart process (formerly from PARAMS.h)
896      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
897    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
898      as argument. (only atm2d & obcs write_pickup have not yet been updated)
899    o pkg/monitor:
900      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
901      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
902      - account for deep Atmosphere factor and density factor (anelastic)
903    o added open boundary conditions capability for seaice HEFF and AREA
904    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
905      thermodynamics
906      - requires a little reorganization, which affects the testreport results
907        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
908        so that now the conservative form is tested
909      - add a few comments
910    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
911    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
912    o add new diagnostics to seaice: advective, diffusive fluxes (only for
913      multidim-advection, for scheme 2 they are not filled) and transports,
914      thermodynamic growth rates
915    o change units of EmPmR (inside the code, + within coupling interface)
916      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
917      Affects results @ truncation level (cg2d match) and update output of
918       experiments: lab_sea(6), global_ocean.90x40x15(10),
919      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
920      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
921      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
922      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
923    
924    checkpoint59h
925    o pkg/exf:
926      - improve vectorization by moving if-statement out of loops in
927        exf_mapfields, exf_radiation
928      - exf_bulkformulae.F: introduce 2D fields and vectorize code
929    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
930    o testreport:
931      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
932        monitor & update offline_exf_seaice exp. output.
933      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
934    o pkg/seaice:
935      - bug fix in the evp solver: boundary conditions were affected be
936        masking of zMax/zMin (changes results)
937      - minor bug fix in boundary conditions in seaice_calc_strainrates
938        (changes results for no_slip)
939      - seaice_lsr.F: make interpolation of eta dependent on boundaries
940      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
941      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
942        stress formulation and no-slip boundary conditions
943    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
944      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
945    o pkg/seaice: a first HSALT time stepping equation has been checked in
946    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
947      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
948      without requiring DO-IF statements
949    o pkg/thsice:
950      use continuous power-law function for partition of energy between lateral
951      melting/freezing and thinning/thickening ; old code using step function
952      still available with #undef THSICE_FRACEN_POWERLAW
953      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
954    o testreport: change AD testing : check against results/output_adm.txt
955      using same scripts as for forward test.
956    
957    checkpoint59g
958    o adjoint testing: in preparation for changing testreport:
959      - output format: cost and grad written on separated lines
960      - ad output results in directory "results" (instead of "results_ad")
961    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
962    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
963    o pkg/ecco: allow user defined cost function contributions
964    o testreport:
965      Allow to choose (per experiment) the list of tested output variables
966       and the main variable (used to issue a pass/FAIL ) ;
967      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
968      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
969      Also modify printing of summary:
970       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
971       b) echo the list of tested variables in the individual summary.txt of
972          each experiment.
973    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
974      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
975      (but still depend on the tile decompostion of the domain).
976    o pkg/seaice: change a discretization detail to make the B-grid code
977      "more symmetric". This change is likely to remove all "ridges/leads" that
978      where quasi-aligned with the grid in B-grid solutions. It may also be
979      the solution to the stress coupling issues with the B-grid.
980    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
981      remove .cvsignore from input dir. (since testreport no longer run here).
982    o pkg/thsice:
983     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
984     - fix reshaping of sea-ice just after advection:
985       melt all the ice only if ice-volume is too small.
986     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
987       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
988     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
989    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
990      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
991    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
992      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
993      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
994      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
995      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
996      -> update output.txt
997    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
998     this affects truncation error: -> update output.txt of exp:
999      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
1000      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
1001    
1002    checkpoint59f
1003    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
1004    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
1005      a bounded range (in forward mode)
1006    o pkg/ecco, ctrl, autodiff and mom_common:
1007     internal parameter controls, completements of implementations
1008    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
1009    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
1010      (not seem any difference in testing results).
1011    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
1012       at face corners.
1013    o pkg/generic_advdiff:
1014     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
1015      loop range indices for computing vertical advection tendency
1016      and do the calculation in the interior only (no overlap) ;
1017      for now, only implemented for SOM advection (to save CPU time).
1018     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
1019    o exch2 adjoint
1020      First set of changes:
1021      - add exch2 hand-written adjoint templates
1022      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
1023        This will require cleanup in pkg/autodiff/*.F
1024        (changed routines currently kept separate in verif. code/)
1025      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
1026        that used to hide exch2 or cubed-sphere specific code
1027        (commented via 'cph-exch2')
1028    o pkg/seaice
1029      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
1030    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
1031       output of global_ocean.cs32x15.thsice .
1032    
1033    checkpoint59e
1034    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
1035      for B-grid vector (not yet tested) and C-grid vector (<- only used
1036      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
1037    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
1038      (#ifdef ALLOW_SALT_PLUME)
1039    o gather_2d/scatter_2d: removed halo regions
1040    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
1041      scheme and the corresponding test case (under front_relax dir). For now,
1042      only available with Skew-flux form and not yet tested in realistic set-up.
1043      adjoint: store directives updated, but gradient checks deteriorated,
1044      so maybe GM/Redi adjoint is now broken.
1045    o seaice adjoint
1046      * add AREA, HEFF, HSNOW as control variable
1047        (should not change lab_sea results)
1048      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
1049    o pkg/seaice:
1050      * added computation of saltFlux in seaice_growth;
1051        For time being, sea ice salinity is assumed constant
1052        contribution of snow flooding to freshening of sea ice is neglected.
1053        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
1054        defaults to 0.0 in order to maintain backward compatibility.
1055        Typical values for SEAICE_salinity are 4 to 10 g/kg.
1056      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
1057      * added SEAICE_availHeatFrac, which specifies fraction of surface level
1058        heat content used to melt or grow ice
1059      * commented out cap of HICE: it helps keep ice thinner
1060      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
1061      * applied OBCS T/S mask to HEFFM sea ice mask
1062    
1063    checkpoint59d
1064    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
1065     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
1066     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
1067    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
1068     and change default value of parameter "GM_Small_Number";
1069     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
1070       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
1071       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
1072    o pkg/ecco: cost function when applying pkg/smooth to controls
1073    o pkg/ctrl: add forcingPrecond run time parameter
1074    o pkg/seaice:
1075     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
1076     - fix bug in metric terms of u-equation in LSR solver (implicit part),
1077       changes verification/lab_sea
1078     - rearrange implicit part of u-equation in LSR solver to make it easier to
1079       read, understand, and debug. This causes changes at the truncation level.
1080     - fix (serious) bug in the boundary conditions (sign error in the implicit
1081       part) of the LSR solver. Changes all LSR results.
1082     - fixed problem with HSNOW initialization to avoid thick snow when AREA
1083       is initilized with small values - does not change lab_sea results.
1084     - added HsnowFile initialization capability
1085    o pkg/smooth: addition to model/src and pkg/ctrl so allow
1086     initialization of pkg/smooth and application to control vector
1087    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
1088    o dependencies: pkg/profiles requires pkg/cal
1089    o pkg/profiles:
1090     - added option ALLOW_PROFILES_GENERICGRID
1091         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
1092         that interpolation information (grid points and coefficients) is provided
1093         within the netcdf input files.
1094         -> sample matlab scripts can be found in MITgcm_contrib/gael
1095         that allow you to prepare netcdf input files.
1096     - also modified: cleaner include statements, cleaner error print statements,
1097       cleaner stops when error, and more tests of the netcdf input files consistency.
1098    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
1099    o pkg/seaice:
1100     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
1101       requires a new routine: seaice_diagnostics_fill.F
1102     - make sure that seaice does not move if not forced (pressure replacement
1103       method, Hibler and Ip, 1995), changes results
1104     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
1105     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
1106       It is turned off by default (=-1.), because it changes the results.
1107     - make it possible to read AREA from a file, too.
1108    
1109    checkpoint59c
1110    o add S/R and diagnostics for oceanic mixed-layer depth
1111    o move GMRedi call after all vertical mixing schemes (including KPP)
1112    o pkg/thsice:
1113     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
1114      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
1115    o pkg/obcs:
1116     - bug fix for balance code
1117    o pkg/seaice:
1118      - allow values of SEAICE_elasticParm > 1
1119      - add new parameter SEAICE_evpTauRelax as an alternative
1120        to SEAICE_elasticParm
1121      - make lsr boundary conditions free slip (by default), changes result
1122      - add code for no slip boundary conditions for lsr
1123      - set minimum of zeta to zero (and not 4e8) (changes results)
1124      - add a cap on AREA after advecting AREA if seaice_growth is not called
1125    o change calculation of Visbeck K:
1126      - no longer depend on tapering scheme; instead, compute slope (limited
1127        by GM_maxSlope). this is equivalent to what was comuted before with
1128        clipping or linear tappering.
1129      - fix vertical averaging (wrong by 1/2 level)
1130      - leave the old version (but will not be maintained) within
1131        #ifdef OLD_VISBECK_CALC / #endif
1132      - update output of exp. ideal_2D_oce
1133    o change error catch in calc_r_star to improve vectorization
1134    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
1135      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
1136    o adjoint:
1137      Re-organized adjoint checkpointing according to Matt Mazloff
1138      (but with modifs/completions/cleanups)
1139      Storing is now bundled into large arrays to optimized I/O
1140      (and second step in cleanup of the_main_loop)
1141    
1142    checkpoint59b
1143    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
1144      - export/import (between ocean & coupler) fields needed for ocean DIC.
1145    o pkg/seaice:
1146      - get rid of three more exchanges seaice_calc_viscosities (required
1147        different loop boundaries in seaice_lsr and seaice_ocean_stress)
1148      - bug fix in seaice_ocean_stress (update of lab_sea required)
1149      - reduce loop boundaries to necessary minimum also in seaice_evp
1150      - go back to the old way of computing deltaC/Z as the adjoint likes that
1151        better
1152    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
1153      passive tracer to an Age Tracer) + update output.txt
1154    o pkg/exf:
1155      - implement A-grid / C-grid selection for wind-stress input files.
1156      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
1157      for now, in exf_bulk_largeyeager04.F only :
1158      - change implementation for case where windspeed + 2. components wind-stress
1159        are read-in. AND use rhoConstFresh to convert evap.
1160    o pkg/seaice:
1161      - use correct EXCH_UV for wind-forcing (on A-grid).
1162      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
1163        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
1164    o pkg/exf:
1165      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
1166      EXF_INTERPOLATION:
1167      - merge global_with_exf/code version of exf_interp_read.F
1168        to the main code ;
1169      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
1170        reading the file ; Important: This options needs to be defined to recover
1171        previous code.
1172        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
1173      - no longer loose real*8 precision along the way when using exf_iprec=64.
1174    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
1175      - change discretisation of evp-solver in order to avoid another exchange
1176        (changes lab_sea) and clean up a little
1177      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
1178        help the adjoint (this also changes the results slightly)
1179      - add a few "_d 0" where they had been missing in seaice_evp.F
1180      - cleaning up: remove unused seaice_calc_rhs.F
1181    o pkg/exf: some cleaning-up:
1182      - change various "constants" into runtime parameters
1183      - cleaned-up Large&Yeager04 routine which should eventually
1184        replace exf_bulkformulae.F (changed names of S/R and CPP)
1185        and merged various ALLOW_ATM_WIND options
1186     only used with thsice pkg (in thsice_get_exf.F):
1187      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
1188        which are used when useStabilityFct_overIce=TRUE (= the default)
1189      - change default values of ice & snow emissivity and scale downward LW
1190        by ice & snow emissivity.
1191    o pkg/thsice:
1192     fix few little problems, in thsice_calc_thickn.F:
1193      - growth vertically (and not laterally) if iceFrac == iceMaskMax
1194      - melt only laterally if hIce < hThinIce (as the comments say)
1195      and in thsice_extend.F:
1196      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
1197      - start to form ice as soon as the minimum ice-volume is reachable.
1198     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
1199      and cpl_aim+ocn
1200    o pkg/kpp
1201     - move computation of surface related input fields to KPP into a new
1202       subroutine kpp_forcing_surf.F
1203     - remove wrong (within bi,bj loops) EXCH calls.
1204     - little cleaning (add argument myThid in last position, cvs header ...)
1205     - for now, fix conservation problem by exchanging KPPviscAz (may not
1206       be the best fix)
1207    o pkg/seaice
1208     - check for inconsistent evp parameter/cpp-flag combination
1209     - remove leftover errIO flat for obsolete name list error handling
1210    o OpenAD
1211     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
1212    
1213    checkpoint59a
1214    o pkg/seaice: some parameter clarifications and a little bit of clean up
1215    o pkg/thsice: rename run-time parameters:
1216       himin       -> hIceMin
1217       himin0      -> hThinIce
1218       hihig       -> hThickIce
1219       i0          -> i0swFrac
1220       transCoef   -> bMeltCoef
1221       frac_energy -> fracMelting
1222      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
1223       with default values (for now) that do not change the results.
1224      remove old version of thsice vars advection in pkg/seaice.
1225    o in FFIELDS.h:
1226      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
1227      - make pLoad & sIceLoad always available (but still only used if
1228         ATMOSPHERIC_LOADING is #define).
1229    o pkg/kpp: replaced _KPP_RL with _RL
1230    o bug fixes for vertical diffusivity computations when both KPP and
1231        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
1232        are no longer updating the vertical diffusivity array
1233        (passed as argument) but are (re-) setting those arrays.
1234    o pkg/seaice: fix bug in evp solver, while doing that
1235      - change (improve?) discretization of stress computations for both
1236        cgrid-lsr and evp solver
1237      - add a new routine to compute strain rates
1238      - the above changes lab_sea results
1239      - add no slip conditions for evp solver (off by default), lsr-version
1240        may follow
1241      - fix exchange for shear at Z-points (does not change lab_sea)
1242      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
1243        (to force the user to pick a time step since there is not "safe" way
1244        of choosing it)
1245      - add principal stress diagnostics
1246      - rearrange fields for evp a little to avoid having to call a: too many
1247        exchanges and b: exchanges for stress trensor components which we do
1248        not have.
1249      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
1250        of evp, complete rewrite for lsr case (latter is does not yet work
1251        in all cases)
1252    o pkg/kpp: add code to have mixing in shelf ice caverns
1253      - add myThid to all kpp routines (long overdue)
1254    
1255    checkpoint59
1256    o pkg/exf:
1257      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
1258        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
1259      - move exf header files from lower_case.h to UPPER_CASE.h ;
1260        add missing cvs Header & Name
1261      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
1262      - add namelist param. selectStressGridPosition, exf_monFreq
1263      - retire many _CLIM routines, and remove data.exf_clim
1264        + params moved to data.exf
1265        + climsst, climsss now handled by exf_set_gen, i.e.
1266          climss?period=0 refers to constant field,
1267          climss?period=-12 to monthly forcing
1268      - split up namelists in data.exf
1269    o pkg/seaice:
1270      - remove seaice_exch and seaice_exch_uv
1271      - remove superfluous exchange of theta
1272      - add myThid to seaice_budget_ocean/ice
1273      - add new interface for atmospheric wind forcing (C-grid only)
1274        + new routine
1275        + two new field (taux, tauy for stress over ice)
1276        + removed one global field (DAIRN) for C-grid case only
1277    o pkg/thsise
1278      - 2nd set of modifs for thsice adjoint in conjunction with exf
1279    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
1280    
1281    checkpoint58y_post
1282    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
1283      vertical diffusivity, similar to that in MOM4; turned on using
1284      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
1285      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
1286    o Added capability for 3D specification of background vertical diffusion
1287      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
1288      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
1289      "data" file that contains the 3D vertical diffusivity coefficients.
1290    o ice dynamics (pkg/seaice) with thsice thermodynamics:
1291      - add code within pkg thsice to advect & diffuse sea-ice fields
1292      similar to (and will replace) what has been added in  seaice_advdiff.F,
1293      but: - conserving Mass, Heat & Salt.
1294           - better when using non-linear advection scheme (not yet fully tested)
1295           - can also be used in atmospheric set-up (for now, only the diffusion).
1296    
1297    checkpoint58x_post
1298    o IO option for global-file compact format:
1299      - add options when generating topology (utils/exch2/matlab-topology-generator)
1300      - add I/O capability (pkg/mdsio).
1301      - adapt utils/matlab/rdmds.m to read this format.
1302      for now long-line format not yet supported by pkg/mdsio (& exch2).
1303    o shelfice: add a few diagnostics
1304    
1305    checkpoint58w_post
1306    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
1307      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
1308      (and replace horiVertRatio in NH code).
1309      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
1310                         and tutorial_plume_on_slope (sensitive to truncation)
1311    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
1312      directly to drive seaice model (C-grid only)
1313    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
1314     - reintroduce computation of wind from stress,
1315     - compute tau (in exf_bulkformulae.F) from windstress averaged to
1316       mass points to avoid tau = 0
1317     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
1318    o rdmnc.m: make it work with "global" files created with gluemnc
1319    o rdmnc.m : some improvements in dealing with singleton dimension
1320      (tested on all testreport mnc output files).
1321    o genmake2: disable pkg/profiles if netcdf test fails.
1322    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
1323    o move call to cal_readparms up to make calendar parameters/variable available
1324      to all packages
1325    
1326    checkpoint58v_post
1327    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
1328      useDynP_inEos_Zc tested.
1329    o pkg/exf: changes to properly interpolate/mask/scale initial fields
1330    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
1331      and portions thereof.  See read_cs.txt for description and examples.
1332    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
1333      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
1334      following the great-circle arc between those 2 points.
1335    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
1336      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
1337    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
1338     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
1339     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
1340     - still needs work (not working with some options ; efficiency to improve)
1341       and serious testing.
1342     - use this scheme for temperature & salinity in 2 advection test exp.:
1343       advect_xy & advect_xz, respectively.
1344    
1345    checkpoint58u_post
1346    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
1347    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
1348    o testreport: add option "-skipdir" to skip some test.
1349    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
1350      momentum calculation.
1351    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
1352    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
1353      remove checkpoint.F and the_correction_step.F (no longer used);
1354      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
1355    o add option (linFSConserveTr) to correct for tracer source/sink due to
1356      Linear Free surface
1357    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
1358    o pkg/thsice: fix reading mnc-pickups
1359    
1360    checkpoint58t_post
1361    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
1362    o pkg/mdsio:
1363     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
1364       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
1365       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
1366     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
1367     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
1368       either MDS_READ_FIELD or MDS_WRITE_FIELD )
1369     - new S/R (to replace MDSWRITEMETA), which allows to write more
1370       informations (variable names, time ...) to meta files.
1371     - modify rdmds.m to give back the meta file content.
1372    o pkg/diagnostics: change vertical interpolation to be safer, and more
1373       flexible (define p-levels to interpolate to in data.diagnostics);
1374      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
1375       diagnostic pointer.
1376    o pkg/seaice: more cleaning up of seaice_growth, added many comments
1377    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
1378    o fix multi-category seaice:
1379     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
1380       SEAICE_MULTICATEGORY
1381     - fix short wave heat flux
1382    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
1383       and allow to use EVP solver. Change forward lab_sea: test both EVP
1384       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
1385    o Initial check-in of lab_sea adjoint
1386      (very similar to natl_box_adjoint/code_seaice)
1387      * used C-grid and EVP solver
1388      * used KPP, GM/Redi
1389      * uses inAdExact=.TRUE.
1390      * gradient checks fail for both ADM and TLM
1391        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
1392        f.d. gradients actually seem more problematic than ADM, TLM gradients;
1393        issue is related to forward mismatch between g77 an ifort
1394    o pkg/seaice: overhaul of thermodynamics
1395     - growth.F and groatb.F are replaced by new routine seaice_growth.F
1396     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
1397     - move a few global fields out of SEAICE.h into seaice_growth.F and
1398       make them 2D (FICE/QNETO/ ...)
1399     - remove FO (it is the same as QNETO)
1400     - introduce a few local fields to avoid modifying external fields such
1401       as atemp, etc.
1402    
1403    checkpoint58s_post
1404    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
1405      changed exf_set_gen.F so that
1406        genperiod=0 means input file is one time-constant field and
1407        genperiod=-12 means input file contains 12 monthly means
1408    o CG2D: use pre-computed solver main-diagonal (stored in common block);
1409      this affects truncation error ; generate new output file for exp. which
1410      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
1411        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
1412        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
1413        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
1414        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
1415        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
1416    o start implementation of deep-atmosphere and anelastic formulation
1417    o verification: remove 2nd copy of input files and use script "prepare_run"
1418      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
1419    o mom_common/vecinv/fluxform: fix a few initialisation isssues
1420    o profiles: fix for multithreaded case
1421    
1422    o diagnostics: rename few diags:
1423      s/'PRESSURE'/'RCENTER '/g
1424      s/'TICE    '/'oceFreez'/g
1425      s/'TAUX    '/'oceTAUX '/g
1426      s/'TAUY    '/'oceTAUY '/g
1427      s/'SWFLUX  '/'oceQsw  '/g
1428      s/DIFx/DFxE/g
1429      s/DIFy/DFyE/g
1430      and add few ocean-forcing diagnostics:
1431      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
1432    o modifications to pkg/seaice/growth.F and budget.F, which change results of
1433      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
1434      as actual snow thickness.  It now refers everywhere to effective snow
1435      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
1436    
1437    checkpoint58r_post
1438    o modifications to pkg/seaice/growth.F, which change results of
1439      lab_sea experiment: fixes pertain to melting snow over open water, to
1440      masking EVAP under sea ice, and to using the correct AREA variable for
1441      computations of EVAP, PRECIP, HSNOW, and GHEFF
1442    o add ability to read bathy, salt, and theta using MNC (off by def)
1443    o add flooding algorithm and advection of HSNOW for pkg/seaice;
1444      both are turned off by default and do no change any results
1445    o seaice advection with pkg/thsice: a step toward the use of non-linear
1446      advection scheme, but #ifdef or commented out for now (requires more EXCH).
1447    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
1448      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
1449      in natl_box (affects results @ truncation level: update output.txt)
1450    o multi-threading and IO:
1451      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
1452      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
1453        (needed to work with SingleCpuIO): tested in all verif. exp.
1454    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
1455      affects the results (but none of the verification test uses this scheme).
1456    o Adding some pkg/diagnostics capability to pkg/seaice
1457      (will certainly be subject to changes)
1458    o ctrl: adding new control variables:
1459      lwflux, lwdown, evap, snowprecip, apressure, runoff
1460    
1461    checkpoint58q_post
1462    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
1463      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
1464      high_res_cube configuration by 4% on Columbia.
1465    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
1466      add (in global_with_exf/code) a version of EXF_INTERP_READ without
1467      dynamical allocation (seems to work in multi-threaded).
1468    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
1469      single CPU io) so that TAF does not have to see EESUPPORT.h
1470    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
1471    
1472    checkpoint58p_post
1473    o obcs: stop if obcs is used with useCDscheme = .true.
1474    o shelfice:
1475     - fix a sign error so that no slip at shelfice interface works
1476     - remove stop for combination non-hydrostatic code and shelfice. That does
1477       not mean, that the results are correct, but at least they are numerically
1478       stable
1479    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
1480    o added adjoint exch routined for all exch*3d* routines
1481      and updated flow directives
1482    
1483    checkpoint58o_post
1484    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
1485      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
1486    o change controling S/R for writing pickup file (new S/R do_write_pickup)
1487      and clean-up reading/writing of pickup files.
1488    o fix local version of read/write pickup (NH part) in rotating_tank/code
1489    o simplify EXCH interface:
1490     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
1491     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
1492    o added the regrid package
1493    o shelfice:
1494     - add a simple boundary layer scheme to reduce noise
1495     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
1496    
1497    checkpoint58n_post
1498    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
1499       local variable (not in common block).
1500    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
1501      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
1502      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
1503        to work with SingleCpuIO.
1504    o add "_d 0" to real constant of pkg/cfc subroutines ;
1505       update exp. cfc_exemple & tutorial_cfc_offline output files.
1506    o multi-threading and IO:
1507      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
1508        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
1509      - barrier before and after reading.
1510      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
1511      - avoid using MDS_WRITELOCAL for LAND pkg output.
1512      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
1513        common-block variables ; Allows multi-threading with master-thread IO.
1514    o change default MAX_NO_THREADS from 32 to 4 ;
1515      and stop cleanly when MAX_NO_THREADS is too small.
1516    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
1517    
1518    checkpoint58m_post
1519    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1520       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1521    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1522       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1523       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1524    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1525        add MITgcm_tutorials (= code + all the tutorials)
1526    o ecco, option to compute cost for total ssh (mean+anom)
1527    o consistent with addition of ptracer and ssh in pkg/profiles
1528    o profiles: adding ptracer and ssh
1529    o testreport: change multi-test output-file name
1530      (from output.txt.{name} to output.{name}.txt)
1531    o profiles: now ok for mutli-tiles case
1532    o seaice: add 4 parameters for different advection schemes for area,
1533      (effective) seaice thickness, enthalphy, and snow height. Their default
1534      is the standard parameter SEAICEadvScheme
1535    o calc_gw:
1536     - add cosFacU in zonal viscous flux (harmonic.visc.).
1537     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1538       of tutorial_plume_on_slope.
1539    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1540    o calc_gw: true flux-form, account for horizontal grid spacing.
1541      update rotating_tank results, but not plume_on_slope (affected at
1542      truncation level, 11 digits).
1543    
1544    checkpoint58l_post
1545    o calc_gw:
1546     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1547     - remove side-drag for now (need to fix it); update plume_on_slope results.
1548     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1549    o commit code to make SST/SSS weights spatially variable
1550      (based on either variable in-situ or variable initial T/S weights)
1551    o pkg/ecco:
1552      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1553        now based on horizontally varying weights wthetaLev, wsaltLev
1554      * cost_averagesflags now returns year indices in addition to day, month
1555      * sflux balance is performed on annual basis
1556        (sflxumm, sfluxmm2, bal_sfluxmm)
1557      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1558        including separate counting and multipliers
1559    o pkg/rbcs
1560      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1561    
1562    checkpoint58k_post
1563    o testreport:
1564     - always build in dir. "build" (if not there, mkdir build instead of building
1565       & running in input)
1566     - run in dir run (if it exists), in build otherwise.
1567     - call prepare_run (if input/prepare_run exists)
1568     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1569    o pkg/exf modifications to interpolation and rotation routines for more
1570       reasonable treatment of North Pole singularity: for tracers North Pole
1571       value is set to northernmost zonal-mean value, for zonal velocity it is
1572       set to zero, and for meridional velocity it is set to northernmost value.
1573    o pkg/exf/exf_check_range.F
1574     - add tile index to diagnostics and move stop statement to the very
1575       end of the routine.
1576    o pkg/diagnostics: (diagnostics_main_init.F)
1577      define title of isomorphic variables according to the current config.
1578    o pkg/thsice with pkg/seaice dynamics:
1579    - fix domain of computation (interior only, required for exf) and do exchanges
1580    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1581    o towards a standard way of dealing with multi-threading in MONITOR
1582      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1583    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1584       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1585    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1586    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1587    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1588       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1589    o tracer advection:
1590     - clean-up and simplify calc_common_factors.F
1591     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1592       advection subroutine (but still not used within DST advection S/R)
1593    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1594    
1595    checkpoint58j_post
1596    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1597      from file (collects calls previously in FORWARD_STEP)
1598    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1599    o adjoint store dir. adjusted accordingly
1600    o genmake2
1601      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1602    
1603    checkpoint58i_post
1604    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1605      on wind stress (SEAICEstressFactor defaults to 1.)
1606    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1607      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1608    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1609      on CS-grid: no longer loosing mass.
1610    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1611    o pkg/ggl90: fix sloppy output and fix a bug
1612    o pkg/seaice: added SEAICEuseEVPpickup parameter
1613      - Set to false in order to start EVP solver with
1614        non-EVP pickup files when using SEAICEuseEVP
1615      - fix sign error in diffusion in seaice_calc_rhs
1616    
1617    checkpoint58h_post
1618    * Modifications for bottom topography control
1619      o replace hFacC by _hFacC at various places
1620      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1621      o add non-self-adjoint cg2d_nsa
1622      o update autodiff support routines
1623      o re-initialise hfac after ctrl_depth_ini
1624      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1625    * Adding verification for 5x5 box (4-layer) bottom topography control
1626    
1627    checkpoint58g_post
1628    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1629       used for mean seasonal cycle, mean diurnal cycle); add an example
1630       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1631    o pkg/ggl90:
1632      - add parameter (minimum surface kinetic energy)
1633      - fix bug (avoiding division by zero)
1634    o couple pkg/thsice to pkg/seaice:
1635      - modify advection in seaice to accomodate new scalar fields to be advected
1636      - only muliDimAdection scheme work with seaice/thsice
1637      - mapping of thsice-variables to seaice-variables, back and forth
1638      - does not break the verification experiments, but does not give the
1639        desired results either
1640    o pkg/seaice
1641      - make (default) second order advection a bit less confusing?
1642    
1643    checkpoint58f_post
1644    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1645      to pkg/seaice):
1646      - new routines thsice_map_exf and thsice_get_exf provide the interface
1647      - add an additional formal parameter to thsice_solve4temp
1648    o pkg/exf:
1649      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1650      - correct Stefan-Boltzmann constant
1651      - new parameter for longwave surface emittance
1652      - separate some stuff from exf_bulkformulae into new routines  
1653        exf_radiation, exf_wind
1654      - add new parameters and constants: longwave emissivity for ocean, ice
1655        and snow, evaporation parameters over ice
1656      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1657        either wind from stress or stress from wind
1658    o pkg/thSIce:
1659    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1660    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1661       and THSICE_CALC_THICKN
1662    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1663    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1664      to make debugging easier.
1665    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1666    o pkg/bulk_force:
1667      - clean-up comments and parameters ;
1668      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1669    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1670      generate new output for test-experiment: aim.5l_cs.thSI
1671    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1672      testreport accordingly
1673    
1674    checkpoint58e_post
1675    o SEAICE_CGRID adjoint done
1676    o R_STAR adjoint implemented.
1677      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1678      * need to sort out init. of h0facc, etc.
1679    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1680      to be able to use it in pure forward.
1681    
1682    checkpoint58d_post
1683    o upgrade simple test-experiment to tutorial example:
1684     step.1: duplicate the experiment and (step.2) will remove the old copy.
1685      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1686      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1687      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1688      tutorial_global_oce_biogeo    <- copy of dic_example
1689      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1690      tutorial_plume_on_slope       <- copy of plume_on_slope
1691      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1692      tutorial_global_oce_optim     <- empty for now (David ?)
1693      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1694     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1695    o correct a sign problem in cost_scat.F
1696    o obcs and ptracers: fix boundary conditions for advections schemes
1697      with larger stencil
1698    o thsice adjoint: start
1699    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1700      completeness
1701    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1702      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1703    o ptracers adjoint:
1704      * avoid extensive recomputatations
1705      * fix missing re-init. of gptr (missed by TAF)
1706    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1707      me to turn off the excessive output to STDOUT that this package produces
1708    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1709      and add those terms in Vector-Invariant formulation.
1710    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1711      if the control period (xx_hfluxperiod etc) is 0
1712    o in profiles pkg, clean routines and fix details
1713    o in ecco pkg, reading ssh data:
1714      fix problem in case the model does not start at iter0=0
1715    o fix mnc-pickup/restart for ptracers
1716    o new package prifiles:
1717      code to compute profile-based cost by Gael Forget
1718      (modifs in ecco, ctrl, autodiff)
1719    o Benign bug fix in initialization (spotted by M. Mazloff) of
1720      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1721    
1722    checkpoint58c_post
1723    o adjoint: finish NLFS adjoint and provide reference output in
1724      verification/global_ocean.90x40x15/results_ad_nlfs
1725    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1726      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1727      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1728      with SEAICE_CGRID defined.
1729    o move calendarDumps from "data" to "data.cal" and clean-up the code
1730      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1731    o add useEXF & useCAL flags (for now, set in hard-coded way)
1732    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1733      (were missing in NH mode, and wrong in quasihydrostatic mode).
1734      waiting for Chris updated version of calc_gw to add those CALLs.
1735    o fix bug in quasihydrostatic S/R ;
1736      add a test for this option: global_ocean.90x40x15.qshyd
1737    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1738      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1739    o add on/off flag useOffLine for package OFFLINE
1740    o seaice:
1741      - modify advection so that it works also on the C-grid
1742      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1743        problem in multi-tile runs with C-grid
1744      - add flags for clipping ice velocities and/or masking solver forcing
1745      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1746        C-grid solver
1747      - added a few comments to seaice_diffusion.F
1748      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1749        are now exclusive)
1750      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1751        required re-ordering the code a little:
1752       + make DAIRN global variable (defined in SEAICE)
1753       + move computation of the viscosities eta and zeta into a new separate
1754         routine (because I need to recompute them in seaice_ocean_stress.F)
1755    
1756    checkpoint58b_post
1757    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1758      update output.txt of exp. aim.5l_cs.thSI
1759    o various mnc cleanups and improvements:
1760      + shrink lookup tables by factor of ~4
1761      + better error reporting when running out of lookup space
1762      + able to handle longer path/file names (up to 500 chars)
1763    o adjoint:
1764      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1765      - TBD: "hidden" mom_vecinv recomp. in dynamics
1766    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1767     (allow to differentiate between forcing components using new integer flags:
1768      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1769     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1770    o ecco
1771      - enable trend removal from SSH anomaly obs.
1772    o adjoint
1773      - a fix for PmEpR when #undef EXACT_CONSERV
1774      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1775      - try to fix "hidden" recomp. in forward_step for NLFS
1776        (NLFS seems broken sometimes after I checked it in)
1777    o seaice:
1778     - add c-grid version of the dynamic solver:
1779       + three new routines that are the c-grid substitute lsr, dynsolver
1780         and ostres
1781       + put a few fields that were local to dynsolver into global common
1782         blocks, so that I can move the computation of stresses etc into
1783         seaice_lsr (saves coding but may break the adjoint).
1784     - replace more hardwired parameters by runtime parameters
1785     - add ice masks that mask the rhs of the implicit solvers where there
1786       is no ice (commented out in seaice_dynsolver, because i am not sure
1787       if this works properly), eventually this should replace the clipping
1788       of ice velocities in seaice_dynsolver to +/-40cm/s.
1789    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1790      include it only where its needed
1791    o move balancing of fluxes before the call of external_forcing_surf
1792    o seaice:
1793      - correct units of turning angles (now they are really in degrees)
1794      - move computation of GWATX/Y out of main routine into dynsolver
1795      - initialize GWATX/Y in seaice_init
1796    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1797      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1798    o seaice: add runtime flags for turning angles (default to zero)
1799    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1800      and trend from exf forcing and ctrl control adjustments
1801    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1802      (since checkpoint57x_post)
1803    o change the default rotation period to 86164.s = the Earth rotation
1804    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1805      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1806    o seaice advection: add code for choosing between the default (2nd order
1807      central differences) and multiDim advection schemes provided by
1808      pkg/generic_advdiff
1809    o seaice:
1810      - removed all references to SEAICE_GRID.h fields from
1811        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1812        (cubed-sphere configuration will change a little)
1813      - grid computations in seaice_init are obsolete now.
1814      - cleaned up code a little so that is easier to read (hopefully).
1815      - added new (better?) discretizations of default advection and diffusion
1816        (turn on with SEAICEuseFluxForm)
1817      - replace 1 in 3d global fields by kSurface in growth.F
1818      
1819    checkpoint58a_post
1820    o seaice:
1821      - bug fix in advect.F
1822    o shelfice:
1823      - separate shelfice load anomaly from pload (breaks with time
1824        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1825        Its default is 0., but it may be computed more cleverly from (unknown)
1826        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1827        done offline. A good approximation of the pressure load anomaly is
1828        necessary to avoid large initial adjustment processes underneath
1829        deep-reaching shelfice.
1830      - small fix in ISOMIP shelfice_thermodynamics
1831      - add more sophisticated thermodynamics of Hellmer (1989), this is
1832        now the default
1833      - give a few constants more intuitive names
1834    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1835      if bulk formulae are used in long integration (especially EmPmR). Turn
1836      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1837      if balancePrintMean, the imbalance that is substracted is printed to
1838      STDOUT.
1839    o fix bug (typo) in obcs_apply_eta.F
1840    o add a new package shelfice which enables us to model the circulation
1841      underneath shelf-ice with draughts of hundreds of meters.
1842     - works
1843     - to do: + include improved thermodynamics
1844              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1845                instead of new field kTopC
1846              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1847                instead of new field R_shelfIce and new code in ini_depth.F
1848                and ini_mask_etc.F?
1849              + adjust vertical mixing schemes?
1850    o seaice pkg:
1851     - add a cpp-flag to include a simple formula for a salinity dependent
1852       freezing point of sea water at the surface
1853     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1854       meridional stresses are now different (and hopefully correct)
1855    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1856       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1857       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1858    o pkg/diagnostics: add options and parameters for regional-statistics
1859       diagnostics ; define regions by reading a region-mask from a file
1860       (might add other options later)
1861    o pkg/bulk_force:
1862     - add option and parameters to use AIM surface-flux formulae.
1863     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1864       others forcing fields (defined in PARM05, parameter file "data") are loaded
1865       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1866     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1867     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1868     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1869       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1870     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1871    
1872    checkpoint58
1873    o add "--embed-source" option to genmake2 which, when the supporting
1874      tools can be compiled (as determined by genmake2) will turn on the
1875      embed_files package which then embeds the entire MITgcm source code
1876      (*.[fFhc] + Makefile) used for the build within the executable
1877      - requested by CNH but off by default
1878      - adds a paltry <9MB to the mitgcmuv executable in most cases
1879      - only writes the output when useEMBEDSRC in eedata is true
1880    o clean up 3-dim. relaxation codes:
1881      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1882      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1883      * Thanks to Tom Haine for testing!
1884    
1885    checkpoint57z_post
1886    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1887      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1888    o fix the pickup behavior for obcs in combination with ptracers
1889    o fix a bug in ptracers_external_fields_load
1890    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1891      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1892    o transfered surface NH pressure to eta field (if exactConserv).
1893    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1894         and update lab_sea output.txt file.
1895    o completing 3-dim. relaxation code: additional term
1896         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1897      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1898      * At compile time, in "EXF_OPTIONS.h" set
1899          #define  ALLOW_CLIMTEMP_RELAXATION
1900          #define  ALLOW_CLIMSALT_RELAXATION
1901      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1902          tauThetaClimRelax3Dim = 15552000.0,
1903          tauSaltClimRelax3Dim  = 15552000.0,
1904      * 3 cases:
1905          1) Use a constant-in-time 3-dim. field
1906          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1907          3) Real-time relax. to time-evolving prescribed field
1908    o Adding Laplacian-type smoothness constraint on
1909      initial and boundary (forcing) controls (ic, bc)
1910      * enable at compile-time via
1911        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1912      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1913      * Absolute scale somewhat unclear so far
1914      * no area weighting was included since no other cost term does so far
1915    
1916    checkpoint57y_post
1917    First step for a NLFS adjoint
1918    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1919    o new init. routines for calc_r_star, calc_surf_dr
1920    o still need to deal with ini_masks_etc
1921    o testreport seemed happy
1922    checkpoint57y_pre
1923    
1924    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1925    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1926    o add new offset feature to offline pkg (plus minor cleanup)
1927    o cfc fixes for final year of integration
1928    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1929      be in GCHEM_OPTIONS).
1930    
1931    checkpoint57x_post
1932    o fix testreport Pb in multiple test experiment.
1933    o cleanup our namelist syntax in verification:
1934      - make it more F95 standards compliant (some work still needed)
1935      - allows the vast majority of our tests to work with gfortran
1936    o Non-Hydrostatic:
1937     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1938     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1939    o Allow to apply AB on T,S rather than on AB(gT,gS):
1940     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1941     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1942       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1943     - need a "clever" read_pickup to restart from the other AB formulation
1944    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1945    o remove some unused variables (reduces number of compiler warnings)
1946    o adjoint
1947      * Disable useVariableViscosity for adjoint for time being
1948        (there are a number of extensive recomputations)
1949      * Initialize certain variables needed for adjoint
1950    
1951    checkpoint57w_post
1952    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1953                 fix the singleCpuIO RS version of MDSWRITEFIELD
1954       and add a WARNING if using globalFiles=T with multi-processors.
1955    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1956      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1957    o tracer advection scheme:
1958      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1959       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1960       was not very convenient).
1961      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1962       (further tests needed for the implicit DST & Flux-Limiter schemes).
1963    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1964      and sRef for convenience, handy, when you want to initialize
1965      ptracers in a large domain with a constant non-zero value. Also,
1966      untangle ptracers_init.F a little.
1967    
1968    checkpoint57v_post
1969    o change dome exp. to use variable viscosity in side-drag terms.
1970    o remove all the files from the cfc_offline test since they are now
1971      incorporated into tutorial_cfc_offline which has been producing
1972      identical results for a few days of testing
1973    o add new parameter: sideDragFactor to enable half-slip-side BC
1974      and change side-drag S/R to use viscosity from mom_calc_visc
1975      (can switch back by setting sideDragFactor=0.); affects results at
1976      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1977       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1978    o vorticity & strain are now computed without masking, to account for
1979      no-slip-side BC in variable viscosity calculation ; mask is applied
1980      anyway later on, before computing advection/coriolis terms.
1981    o modify exp4 to test new obcs support for reading from external files
1982      and for passive tracers
1983    o fix behavior of ptracers_monitor when monitor output is written to a
1984      netcdf-file; still not independent of monitor.F (writes in the same
1985      file).
1986    o change default value of tRef (put a uniform, meaningful value for ocean
1987      & atmos) and initialize sRef (was missing, as Martin mentioned).
1988    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1989      to be proportional to enstrophy dissipation length.  Thus,
1990       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1991      This is now consistent with Smagorinsky and with the manual.
1992    
1993    checkpoint57u_post
1994    o OBCS and PTRACERS: add open boundary support for passive tracers
1995      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1996        OB-values from file; this is not different from the way theta and salinity
1997        are treated
1998      - however, Orlanski-radiation conditions are not supported, and the model
1999        will stop if you use pTracers and Orlanski at the same time.
2000      - beefed up the rountine obcs_external_fields_load: now only those open
2001        boundary values are overwritten with values from files for which there
2002        are really files, otherwise the OB-fields remain untouched. This makes
2003        it possible to use different OBs at different ends of the domain (as
2004        with EXF)
2005    o reduce number of exch calls in shap_filt (s2).
2006    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
2007      truncation level) 4/5 MLAdjust test results (11&12 digits match).
2008    
2009    checkpoint57t_post
2010    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
2011    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
2012      same truncation, independent of the face number: affects affects several
2013      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
2014    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
2015      note that biharmonic viscosity + no-slip was not tested in any experiment.
2016    o fix bug in non-linear free-surf side-drag ; generate new output for
2017      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
2018    o make mnc honor the writeBinaryPrec flag for most kinds of output
2019    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
2020    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
2021      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
2022    o add brackets in multi-terms sum to get same truncation, independent of
2023      the face number (manage to get exactly same value of gU,gV at the cs-edge)
2024      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
2025    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
2026      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
2027      a maximum grid-scale Reynolds number.  Also, changes all length calculations
2028      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
2029      Suggested values of viscosity parameters found in mom_calc_visc.
2030      Many new viscosity diagnostics available.
2031    
2032    checkpoint57s_post
2033    o Add clearing-house for viscosity calculations, mom_calc_visc and
2034      correct numerous bugs in LeithD and Smagorinsky discretizations.  
2035      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
2036      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
2037      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
2038      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
2039      The Strain-Tension form is now called with useStrainTensonVisc=.true.
2040      ViscAhStrain and viscAhTension are now retired.
2041    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
2042    o In response to JMC's bug report, genmake2 now ignores any soft-links
2043      that it finds in the *current* directory when searching for files.
2044      Soft-links found in any other source directories will still work as
2045      they did before.
2046    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
2047      a C routine to unlimit the stack size
2048    o mnc-ify pkg/aim snapshot vars
2049    o mnc-ify pkg/land as requested by Daniel
2050    o various changes to mnc including:
2051      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
2052      - output can now be grouped so that all files within a group
2053          change the ITER portion of their names in lock-step together
2054      - can now read ("global") PER-FACE (in addition to PER-TILE) files
2055          and works with both EXCH1 and EXCH2 (but needs more testing)
2056      - writing works for all verification test cases w/ g77 on Linux
2057    
2058    checkpoint57r_post
2059    o make MNC variable initialization happen earlier
2060    o add diagnostics for (almost) each term of the momentum Eq.
2061    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
2062    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
2063    o remove MINIMAL_TAVE_OUTPUT option ;
2064      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
2065    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
2066      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
2067    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
2068    o add time-dependent SST, SSS control
2069    o cost terms in ecco/ modularized (new cost_generic.F)
2070    o cost_averages routines are modularized (new cost_averagesgeneric.F)
2071    o new infrastructure for seaice model vs. obs misfits in seaice/
2072      * driver from the_main_loop.F is seaice_cost_driver.F
2073      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
2074      * gradient check in Exp. 6a of natl_box_adjoint/
2075    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
2076      (see README file)
2077    
2078    checkpoint57q_post
2079    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
2080    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
2081      - bug was reported by Jean-Michel and Ian Fenty
2082    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
2083      update exp. cpl_aim+ocn output.
2084    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
2085      Needed for high-res. runs with large global files
2086      to be able to limit tapelev size
2087    o Changed some tests for adjoint:
2088      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
2089      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
2090      * global_ocean.90x40x15/ back to default 3-level checkpointing
2091    o Modifications to enable scripted COMMON to MODULE conversion
2092      * verification/OpenAD/code/ has necessary scripts and description;
2093      * converts, compiles and runs successfully;
2094    
2095    checkpoint57p_post
2096    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
2097    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
2098      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
2099    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
2100    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
2101      (was already the case for dissipation with mom_vecinv,
2102       and also the case for grad.PhiHyd when staggered-timeStep)
2103      This will allow to put dissipation out-off the AB time-stepping.
2104     Unfortunately, affects truncation error. Update output of exp. that "fails"
2105      (cg2d matching number) and leave the others for later: front_relax(10),
2106      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
2107      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
2108    
2109    checkpoint57o_post
2110    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
2111      (2) its ready to be documented during the 20050801 DocFest
2112    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
2113      for ideal_2D_oce and lab_sea on linux_ia32_g77
2114    o set to #undef CTRL_SET_OLD_MAXCVARS_30
2115      in global1x1_tot/code_seaice_adj to access indices 32, 33
2116      (worth another tag)
2117    
2118    checkpoint57n_post
2119    o adding precip control xx_precip 32
2120    o adding swflux control xx_swflux 33
2121    o Replacing 10 forcing penalty cost routines by 1 generic.
2122    o Implementing partitioning in time-mean and variable adjustment
2123      for atmos. state.
2124    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
2125    o in natl_box_adjoint:
2126      * updated exp 1 to 10
2127        (but does not have time-mean vs. variable split results yet)
2128    o updated global1x1/*_seaice_adj/
2129      to incorporate latest changes
2130    o enable useSingleCpuIO for mdsio vector routines
2131      (applies in particular to tapelev I/O)
2132    o removed inefficient K-loop in all active_file*control*.F
2133    
2134    checkpoint57m_post
2135    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
2136      and advect_cs (use EXCH-2 and standard cs-32 grid files).
2137    o pkg/exch2: filling of face-corner halo regions is optional
2138      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
2139    
2140    checkpoint57l_post
2141     tag before updating tutorials (pre-release-2)
2142    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
2143       for output and interpolation of input fields onto model grid)
2144    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
2145       Affects results of exp. rotating_tank ; update output.txt.
2146    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
2147          and taking the square quantity and/or using a fraction-weight field.
2148    o fix aim_diagnostics_init.F mate numbers.
2149    o add mnc output capability to diagnostics/diagstat and update
2150      our cvsignore files for the ACSII output generated
2151    
2152    checkpoint57k_post
2153    o lab_sea now uses diagnostics package and provides a suite of
2154      new EXF diagnostics output.
2155    
2156    checkpoint57j_post
2157    o exf
2158      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
2159        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
2160        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
2161      * extended diagnostics output
2162        - now includes all EXF variables
2163        - hs, hl moved to common block
2164        - separate S/R for diagnostics, called after ctrl vector is added
2165        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
2166        - EXFqnet contains true Qnet (i.e. includes qsw)
2167      * updated verif. lab_sea, global_with_exf
2168      * Rearranging hflux (exf_mapfields -> exf_getforcing)
2169        to ensure that diagnostics sees a true EXFqnet
2170    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
2171    o diagnostics pkg: change pointers so that 1 diagnostic can be used
2172      several times with different frequencies.
2173    o mnc-ify the thsice package as requested by Daniel Enderton
2174      - the monitor--MNC output needs work
2175      - many attributes need to be added (most are currently blank)
2176    o mnc-ify theaim_v23 package as requested by Daniel Enderton
2177      - many attributes need to be added (most are currently blank)
2178    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
2179    o add Sadourny like discretization to the 4th.O vorticity advection scheme
2180    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
2181      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
2182         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
2183    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
2184     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
2185    
2186    checkpoint57i_post
2187    o Diagnostics package was changed: diagnostic allocation is now deactivated
2188      by setting an empty file name in the namelist (used to be by setting 0 frequency)
2189    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
2190      add 1rst Order upwind vertical Shear.
2191    o add a quick fix for A/B checkpointing in OFFLINE mode
2192    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
2193      end-run around the C/Fortran linking horror in eesup/src/timers.F
2194    o added pkg/runclock: allows user to terminate run based on wall clock
2195    o added non-hydrostatic scaling parameter: nh_am2
2196    o pkg/my82: futile attempt to make results compiler-independent by adding
2197      some "_d 0", etc. no effect.
2198    o for mnc output, fill the 'T' coordinate var with myTime and create a
2199      separate 'iter' variable for iteration count
2200    o pkg/diagnostics:
2201      add new capability: output of Global/Regional & per-level statistics ;
2202      tested against monitor output (including land & thSIce) on various exp.
2203    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
2204    
2205    checkpoint57h_done
2206      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
2207      data.diagnostics, data.gchem, data.ptracers) is done.
2208    
2209    o pkg/diagnostics: prepare for Global/Regional statistics.
2210      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
2211    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
2212      and rename it: DIFFERENT_MULTIPLE
2213    
2214    checkpoint57h_post
2215    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
2216    o pkg/diagnostics: change output frequency, now in seconds (instead
2217      of Nb of iterations). This requires to change data.diagnostics.
2218    checkpoint57h_pre
2219    
2220    o in mnc, let the user create the output dir if both mnc_outdir_date
2221      and mnc_outdir_num are false
2222    o add fflags() to pkg/diagnostics which allows one to specify, on a
2223      per-file basis, the file precision [default behavior is unchanged]
2224    o added diagnostics to pkg/kpp, including computation of mixed layer
2225      depth based on a temperature/density criterion
2226    o updated verification/natl_box to test the new pkg/kpp diagnostics
2227    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
2228    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
2229    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
2230      not mnc -- this mistake was found by JMC and is now corrected
2231    
2232    checkpoint57g_post
2233    o add Adams-Bashforth 3rd Order time stepping:
2234      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
2235      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
2236    checkpoint57g_pre
2237    
2238    o make lambda[Theta,Salt]ClimRelax spatially varying
2239      (default remains spatially uniform constant based on tau)
2240    o added new control variables
2241      * init. uVel, vVel, etanN
2242      * lambda[Theta,Salt]ClimRelax
2243    o separate masks used for ctrl_pack/unpack 'from write_grid' output
2244      (suggested by G. Forget)
2245    
2246    checkpoint57f_post
2247    o add parameter "baseTime" = model base time = time at iteration zero
2248      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
2249      account for baseTime shift
2250    o move Coriolis arrays from PARAMS.h to GRID.h
2251    checkpoint57f_pre
2252    
2253    o mnc-ifying the seaice package
2254    o introduced an alternative length scale calculation for use in the limiting
2255      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
2256    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
2257    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
2258      as well as grad(vort3).  Made it compatible with both approximate form
2259      for the cubed sphere and full form of these gradients.  Added flag
2260      useFullLeith to select between approximate and full form.  
2261    o add "d0" in getcon.F to reduce differences between compilers/platforms
2262      update output.txt of exp. fizhi-gridalt-hs
2263    o change port_rand funtion to allow to set the seed.
2264    o fix obscure MNC bug involving conversion between reals and integers
2265      - it caused no problems with certain (eg. gcc, ifc) compilers but the
2266        new version is now more standards-compliant
2267    o adjoint-related modifications
2268      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
2269      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
2270      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
2271    
2272    checkpoint57e_post
2273    o Adding eddy stress controls a la Ferreira et al.
2274    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
2275    
2276    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
2277      update output.txt of exp. fizhi-gridalt-hs
2278    o add more "Z" dimensions and associated coordinate vars to MNC
2279    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
2280    o parameter calendarDumps: when set, approximate months (30-31 days) and years
2281      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
2282      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
2283      months and years.  Requires pkg/cal.
2284    o diagnostics: add pickup functionality
2285      - off by default for backwards compatibility
2286      - current version only uses MDSIO -- MNC will be added
2287    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
2288    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
2289    
2290    checkpoint57d_post
2291    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
2292    o modify verification/ideal_2D_oce so that it tests the creation of mnc
2293      output from the diagnostics package
2294    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
2295    o make genmake2 more portable by using ".$FS" instead of ".f" for more
2296      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
2297    o add coordinate variables to the MNC output from the diagnostics package
2298    o change MNC-flags default value: true when useMNC=TRUE
2299    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
2300      the ability (off by default) to read the grid information using MNC
2301    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
2302    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
2303    o do snap-shot diagnostics at the middle of the time-interval (instead of
2304      at the end).
2305    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
2306      new test for AIM with thSIce + slab-ocean
2307    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
2308    o move state variable diagnostics to the beginning of the time step ;
2309      (note: still needs some work specially for snap-shot diagnostics)
2310      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
2311    
2312    checkpoint57c_post
2313    o Change testing option (-ieee) to get closer agreement between g77 & ifort
2314    o generate new output.txt files on faulks with g77 & the new -ieee option
2315    checkpoint57c_pre
2316    
2317    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
2318      update output.txt of exp. global_ocean.90x40x15
2319    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
2320      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
2321    o add saltFlux(+File) forcing capability with periodicExternalForcing
2322    o allow to use pkg diagnostics for GM-Redi & ThSIce output
2323    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
2324    o improvements for the MNC output from DIAGNOSTICS:
2325      - correct handling of the unlimitied dimension
2326      - all dims now have associated coordinate variables
2327      - variables located at U, V, and Corner ("Z") points are now written
2328        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
2329        *all* data points are output
2330    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
2331    o added pkg/seaice/seaice_monitor.F
2332    o mdsio_readfield.F can now read files visible only to master MPI process.
2333    o pkg/seaice: some test code for ice-modified ocean stress
2334    o exf_getffields interpolation defaults to bilinear for all scalar forcing
2335      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
2336      spurious negative numbers for precipitation and humidity.  Will cause
2337      some small numerical differences for integrations using pkg/exf/exf_interp.F.
2338    o pkg/ctrl/
2339      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
2340        May be enabled via doPackDiag
2341      *  introduce z-scaling of
2342         + gradient (doZscalePack) and
2343         + control (doZscaleUnpack)
2344    o pkg/mdsio/
2345      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
2346      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
2347    
2348    checkpoint57b_post
2349    o simplify options in diagnostics_fill arguments (remove weird combinations)
2350    o fix MNC coordinate variables so that they now contain per-face index
2351      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
2352      general, EXCH2 grids are only aligned to a "local" coordinate system
2353    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
2354    o Implement instantaneous output within pkg diagnostics:
2355      setting a negative frequency in data.diagnostics produces
2356     "snap-shot" output (as opposed to time-average if freq > 0)
2357    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
2358      NOTE: change ptracer diagnostics name: use 2 characters to work with
2359            more than 9 tracers. Add also diagnostics of advect & diffus flux.
2360    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
2361      becomes the coordinate variable for the 'T' dimension
2362    o add CF-style coordinate variables to MNC
2363      - just a first cut:  numbers are meaningless on the cubesphere and
2364        missing along the T axis but otherwise it works!
2365    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
2366    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
2367    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
2368      this is based directly on what the model compute, so that the content of
2369      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
2370    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
2371    o clean up build options files for SunOS, in particular
2372      - remove -traditional from xmakedepend
2373      - change -xarch=v9 to -xarch=native for f77
2374      - restore use of make (not gmake)
2375      - add CC=gcc if using g77
2376    o changes per discussion of AM, JMC, & EH3 today:
2377      - move redundant "grid" variables out of "state" -- in preparation of
2378        creating proper CF-style coordinate variables and in recognition
2379        that any/all grid variables can be easily copied (eg. w/NCO) from
2380        the grid files into any of the other NetCDF files
2381      - *always* output grid variables with MDSIO (this will eventually be
2382        changed)
2383      - output MNC grid file if useMNC is true
2384    o every instance of _END_MASTER() has been found and replaced with
2385      _END_MASTER( myThid ) in order to satisfy certain picky Sun
2386      preprocessors
2387    o re-arrange diagnostics pkg initialisation:
2388     - allow each package to extend the available diagnostics list
2389     - add some checking and fix small problems (multi-threaded, ...)
2390     - new S/R diagnostics_fill (replace fill_diagnostics):
2391       look through the short list of active diag. (instead of the long list)
2392       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
2393    
2394    checkpoint57a_post
2395    o this set of changes restores TAMC compatibility
2396      tested for global_ocean.90x40x15 adjoint on trough
2397      (what a pain)
2398    
2399    checkpoint57a_pre
2400    o some modifs in tools/build_options for sunos
2401    o call ctrl_pack for ctrl at end for optimcycle=0
2402    
2403    checkpoint57
2404    o add horizontal bi-harmonic viscosity for vertical velocity
2405      - new parameter viscA4W (defaults to viscA4)
2406      - affects only non-hydrostatic code
2407      - to be done: no-slip lateral boundary conditions
2408    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
2409    o implement Implicit Vertical advection for pTracers
2410    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
2411      (implemented also for implicit vertical diffusion & advection)
2412    o OBCS: extend application of tracer open boundary conditions
2413      to a strip beyond the boundary of width Olx/Oly
2414    o add call monitor to TAF set of required calls (flow directives)
2415      and include in natl_box_adjoint
2416    o untangle a few ifdefs related to cost, ctrl, autodiff
2417      untangel a few ALLOW_ECCO_OPTIMIZATION
2418    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
2419      (theta2, salt2 in ecco_cost_weights)
2420    
2421    checkpoint56c_post
2422    o OBCS as control variables
2423      - update ctrl_ad_diff.list, obcs_ad_diff.list
2424      - remove balance of obcs controls from default
2425      - fix index bug nobcs in ctrl_init
2426      - fix dummy fields filen in ctrl_pack
2427      - add dummy weights for obcs
2428    o lsopt: comment out fort.94 output
2429    o optim:
2430      - remove unnecessary header files
2431      - adjusted namelists
2432      - add xerbla.F to Makefile
2433    o exf:
2434      - multiple modifications of exf_check_range
2435      - unit change in exf_init_runoff from [m/year] to [m/s]
2436    o mdsio:
2437      - i/o-vector change debugLevel from debLevA to debLevB
2438    
2439    checkpoint56b_post
2440    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
2441      is called from DO_THE_MODEL_IO
2442      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
2443      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
2444      - clean up PTRACERS_WRITE_TIMEAVE a little
2445    o add another verification experiment that tests both the cfc-pkg and
2446      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
2447      reactive tendencies treated inline with regular timestepping
2448    o testreport previously did a lousy job of comparing small numbers, so
2449      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
2450      implemented in the little c-progam tmp_cmpnum.c which is embedded in
2451      testreport.
2452    o ptracers_monitor: bug fix for MPI
2453    
2454    checkpoint56a_post
2455    o GCHEM: finish reorganizating the package
2456      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
2457        (introduces another 3D-array for each passive tracer, but only if
2458        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
2459        gchemTendency is not needed because the timestep is done separately)
2460      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
2461      - GCHEM is now---more or less cleanly---separate from PTRACERS
2462      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
2463        so clear to me how that should be done in a general way.
2464    o CFC: improve formatting of output in CFC_ATMOS
2465    o PTRACERS:
2466      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
2467        that ALL experiments with ptracers enable can be checked. This makes
2468        GCHEM_MONITOR obsolete.
2469      - include a runtime parameter PTRACERS_monitorFreq that defaults to
2470        monitorFreq
2471      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
2472    o add PTRACERS (PTR0[1-5]) to testreport output
2473    o exf_check_range:
2474      * default changed to .TRUE.
2475      * will check values for niter0 if debLevA, every timestep if debLevB
2476      * STOP in exf_check_range if 'out of range'
2477      * range chosen generous to allow for potential extema
2478      TBD: a version with stricter range
2479           permitted range would be runtime parameters
2480    o GMredi:
2481      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
2482      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
2483      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
2484    o GCHEM:
2485      - move call to GCHEM_FORCING_SEP, so that it is now called before
2486        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
2487      - introduced a useGCHEM runtime flag and applied it everywhere.
2488      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
2489        this flag is now only visible within GCHEM-pkg routines.
2490      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
2491        be replaced by a 3D array that is computed before thermodynamics; for
2492        this, the tracer ID iTracer had to be included into the parameter list
2493        of ptracers_forcing
2494      - set up forward_step to call gchem_forcing, that will replace
2495        gchem_forcing_int in ptracers_forcing
2496      - cleaning up
2497    o small cleaning of exch2: remove files that are also in eesupp/src
2498    
2499    checkpoint56
2500    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
2501    o mnc: cleanup "full" files--fixes out-of-memory problem
2502    o ECCO-GODAE
2503      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
2504      * fully merged and updated from SIO code
2505        windstress sign change affects
2506        - exf_inscal_[u/v]stress
2507        - sign of xx_tau[u/v] adjustments
2508        - signs in cost_scat
2509      * ctrl_get_gen: avoid update of tau[u/v] for first few days
2510      * natl_box_adjoint updated and compressed
2511      * 2-level checkpoint switch added
2512        (tested in EXP. 1 of natl_box_adjoint)
2513      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
2514    o SVD
2515      * first complete, non-hacked version for SVD calculations
2516      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
2517        performed via direct access files admtlm_vector.it????
2518        (via ctrl_[un]pack)
2519      * optimcycle is used for ARPACK iteration counter
2520        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
2521      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
2522        and add linear transforms where necessary
2523      * controls are initial/final SST, SSS (can be extended; need to check
2524        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
2525    o mdsio: filename info to both stderr, stdout
2526    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
2527      from sign change
2528    
2529    checkpoint55j_post
2530    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
2531      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2532    o add consistent build directories and .cvsignore files to verification
2533    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
2534    o make all subroutines 30 or less characters in length for certain older
2535      compilers to work (a thorough search only turns up two routines in
2536      pkg/ptracers)
2537    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
2538      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2539    
2540    checkpoint55i_post
2541    o change arrays for total vertical diffusivity (2.D if explicit,
2542      3.D if implicit) ; each ptracer uses its own background value.
2543    o added mnc/NetCDF output capability to ocn_compon_interf
2544      - added bits to verification/cpl_aim+ocn so that it can run on
2545        ITRDA and other clusters without the mpirun "-wd" option
2546    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
2547      configuration
2548    o give MNC the ability to create additional files rather than
2549      exceeding a specified file size limit "MNC_MAX_FILESIZE"
2550      - the default is just less than 2GB which is a practical limit
2551        on many systems
2552    o Compute the non-local term using either KPP vertical diffusivity (=default)
2553       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
2554    
2555    checkpoint55h_post
2556    o add verification test "vermix"
2557    o remove all the *_ioinc flags and replace with the single global
2558      outputTypesInclusive flag
2559    o allow to set a vertical profile of vertical diffusivity for T & S
2560    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
2561    o useMNC moved from data.mnc to data.pkg
2562    
2563    checkpoint55g_post
2564    o Renaming carbon AD experiments to comply with testreport conventions
2565    o Updating adjoint of Held-Suarez hs94.1x64x5
2566    o Fixing directives for non-ECCO forward_step, after ECCO directives
2567      have been fixed to avoid recomp. of do_oceanic_phys
2568      Works well for global_ocean.90x40x15,
2569      but recomp. issue remains for carbon
2570    o Updating adjoint output for natl_box_adjoint after
2571      pkg/ecco has been modified (see taga c55d_post)
2572    
2573    checkpoint55f_post
2574    o rename to timeave_init_fixed
2575    
2576    checkpoint55e_post
2577    o some delicate re-shuffle of store directives to avoid one
2578      extra call of do_oceanic_physics
2579      affects ecco_the_main_loop.F, do_oceanic_physics.F
2580      checkpoint_lev1_directives.h
2581    o NB: this may break global_ocean adjoint temporarily,
2582      but it is clear how to fix it. Will do later, need this now.
2583    
2584    checkpoint55d_post
2585    o ECCO specific cost function terms (up-to-date with 1x1 runs)
2586    o ecco_cost_weights is modified to 1x1 runs
2587    o modifs to allow observations to be read in as
2588      single file or yearly files
2589    o enable to read exf forcing fields as either
2590      single file or yearly files (flag useExfYearlyFields)
2591    checkpoint55d_pre
2592    
2593    o switch between 2-level and 3-level checkpointing
2594    o add ability of MNC to write local and "partial" (eg. 2D slices where
2595      the full 3D field is never actually stored) arrays to NetCDF files
2596      with the correct (that is, the complete multi-dimensional) set of
2597      array indicies
2598      - used in mom_vecinv() to write the diagFreq output
2599      - tested (demonstrated) in verification/aim.5l_cs
2600    o further mnc-ification
2601      - add verification/lab_sea to the list with mnc setups
2602      - fix undefined mnc v-names in cd_code
2603      - add kpp to mnc output (both snapshot and timeave)
2604    o non-hydrostatic code
2605      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
2606        in calc_gw.F
2607      - defaults to viscAh
2608      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
2609        friction or Leith) in non-hydrostatic mode, as long as there is
2610        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
2611    o pkg/cost
2612      extend simple cost functions to treat time mean quantities
2613      (T,U,V) via cost_accumulate_state from cost_tile
2614    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
2615        be 2 times larger than the minimum size the advection scheme requires.
2616        now get a perfect conservation of salt in advect_cs test-exp (updated)
2617    o GGL90 (Gaspar's TKE mixed layer)
2618      - add horizontal diffusion of TKE, requires exchanges in
2619        do_fields_blocking_exchanges, horizontal diffusivity is zero by
2620        default. In OPA there is no horizontal diffusion of TKE but the
2621        mixing coefficients are computed from a horizontal average of TKE of
2622        6 points or so. I think that diffusion has a little more physical
2623        justification.
2624      - clean up ggl90_calc in the hope of reducing memory usage (this hope
2625        was in vain)
2626      - mask tke-variable in ggl90_init
2627    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
2628    o fix biharmonic diffusion on CS-grid.
2629    o more obcs stuff
2630      - added obcs_external_fields_load as an alternative to the EXF-pkg option
2631        for reading boundary values. This routine is called from
2632        obcs_prescribe_read
2633      - updated obcs_check
2634      - changed sponge layer relaxation parameter units for days to seconds
2635      - turned off sponge layer by default
2636      - changed argument list of OBCS_CALC to myTime+deltaTclock
2637      - fixed about 35 bugs in obcs_external_fields_load
2638    
2639    checkpoint55c_post
2640    o obcs stuff
2641      - new runtime flags useOBCSprescribe, useOBCSbalance
2642      - re-arranged obcs_calc
2643      - moved exf_getobcs to obcs_prescibe_read
2644        obcs_prescibe_read is called after ORLANSKI stuff
2645        and independent of it (executable can contain all).
2646      - updated obcs_check
2647      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
2648        These may be necessary only if tangential velocities are
2649        prescribed at OB, not sure, needs testing.
2650    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
2651      which simplifies the calls and passes the ifc check-bounds test
2652    
2653    checkpoint55b_post
2654    o add a 2D scalar, Z location, exchange_2 routine.
2655    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
2656      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
2657      affects advect_cs results (for the wrong reason): update output.txt
2658    o use a more standard discretization for biharmonic viscosity ;
2659     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
2660      affects results of dome set-up: update output.txt
2661    o fix gad_advection.F (CubedSphere part), back to version 1.23
2662    o fix bug in mom_vi_del2uv.F (CubedSphere part).
2663    
2664    checkpoint55a_post
2665    o merged code to
2666      * prescribe/read time-dependent open boundaries
2667        (works in conjunction with exf, cal)
2668      * sponge layer code for open boundaries
2669      * each boundary N/S/E/W now has its own CPP option
2670        (healthy for the adjoint)
2671    
2672    checkpoint55
2673    o up-to-date adjoint of previous breaks
2674      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
2675      - global_ocean_ebm: adjoint still needs fix (TLM ok)
2676      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
2677      - carbon: * remove tr1-related adjoint verification
2678                * add ptracer as control variable
2679    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
2680      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
2681    
2682    checkpoint54f_post
2683    o in verification/carbin/ remove experiment related to
2684      ALLOW_PASSIVE_TRACER (array tr1 etc)
2685      code_ad/ input_ad/ results_ad
2686    
2687    o add two new packages
2688      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
2689        + subject to optimization (memory)
2690      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
2691        + subject to reordering (many GOTOs in the original code)
2692        + so far opps is called for every (i,j) point, and then operates in
2693          the vertical; one may want to reorder the scheme in order operate in
2694          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
2695          fields)
2696    o overhaul of IO so that we now have flags for MDSIO and/or MNC
2697      - all verification tests compile and run with linux_ia32_g77
2698      - defaults are compatible with current input files--nothing
2699        should change if you were not previously using MNC
2700      - MNC output has been added in numerous places (eg. timeave)
2701        but there are still a few writes not yet do-able with MNC
2702        (this is in progress)
2703      - flags now allow for either/or/both use of MDSIO and MNC and
2704        documentation will soon follow
2705      - numerous small formatting cleanups for ProTeX
2706    o add version info (via BUILD_INFO.h) to MNC and stdout
2707    
2708    checkpoint54e_post
2709    o add two new packages
2710      - pp81 (Packanowski and Philander, 1981), Richardson number and
2711        stratification dependent mixing
2712      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2713      - these scheme operate in a similar manner as KPP (without ghat, of
2714        course), however there is only one diffusivity that is used for both
2715        temperature and salinity (and passive tracers)
2716    o add offline package
2717    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2718      provided by Stephanie Dutkiewicz
2719    o genmake2: add ability to search for C compilers and cleanup test output
2720      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
2721    
2722    checkpoint54d_post
2723    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
2724    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
2725      leading to additional shift by 5 days each year of integration
2726       (i.e. leading to considerable offset over the years)
2727    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
2728    o start with no AB and no initial filtering (staggerTimeStep):
2729      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
2730    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
2731      (external loading & cpl import/export stay in forward_step.F)
2732    o update coupling interface to work with new staggerTimeStep
2733    o change MDSIO ptracers_pickup.
2734    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2735    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2736    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2737    
2738    checkpoint54c_post
2739    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2740      this affects (truncation error) output.txt of test-exp:
2741       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2742    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2743    o change Qnet to always be the net heat flux, (+upward).
2744      affects (truncation error) output of natl_box exp.: updated
2745    o define the max number of passive tracers in PTRACERS_SIZE.h
2746    o start to test mnc routinely in exp0
2747    o add sea-ice loading (sIceLoad) as a new forcing field.
2748    
2749    checkpoint54b_post
2750    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2751       impressive on Altix and Opteron systems)
2752    o diagnostics can now write NetCDF files through the mnc package
2753    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2754    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2755    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2756      affects (truncation error) output of lab_sea & natl_box exp.: updated
2757    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2758    
2759  checkpoint54a_post  checkpoint54a_post
2760  o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).  o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2761  o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)  o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)

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