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revision 1.703 by gforget, Fri Jul 14 22:14:28 2006 UTC revision 1.1135 by jmc, Sun Jun 28 16:55:11 2009 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/exch2:
8      - always call exch2_*_cube, not exch-1 anymore, if useCubedSphereExchange=F
9        (was already the case with AUTODIFF_EXCH2 defined)
10      - add bj in exch2 arrays and S/R.
11    o add pkg/longstep for ptracer timestep a multiple of U/V/T/S timestep
12      - adds deltaT argument to the subroutines TIMESTEP_TRACER DWNSLP_APPLY
13        GAD_ADVECTION GAD_CALC_RHS GAD_IMPLICIT_R GAD_SOM_ADVECT
14      - verification experiment natl_box.longstep
15    o build_options: ifort+mpi_aces optfile (following Constantinos advise):
16      allow different versions of ifort (8 or 9) and different versions
17       of mpi (mpich or mpich2) to be used with the same optfile.
18      requires to load a netcdf module and set MPI_INC_DIR (see comments inside
19       optfile). Change testing scripts (example_scripts/ACESgrid) accordingly.
20    o pkg/seaice:
21      fix previous modif (3-level field removed) for old-pickup reading
22    
23    checkpoint61r
24    o pkg/seaice:
25     - clean up the 3-time levels of UICE,VICE,HEFF,AREA in three steps:
26      1. introduce fields for time step (N-1)
27      2. do not use levels 2 and 3 anymore (but keep them)
28      3. replace 3D versions of UICE,VICE,HEFF,AREA by 2D versions. This
29         includes changes to pkg/thsice/thsice_get_velocity.F,
30         model/src/external_forcing_surf.F, pkg/obcs/obcs_apply_seaice.F, and
31         pkg/obcs/obcs_apply_uvice.F.
32     - completely remove code for leap-frog time stepping for second order
33       advection
34     - adjusted adjoint accordingly;
35       gradient checks have improved by an order of magnitude!
36    
37    checkpoint61q
38    o pkg/seaice: fix bug in free slip boundary conditons for LSOR solver
39     - the boundary conditions along open boundaries are unclear, because the
40       associated masks are set to zero and are thus treated as closed when
41       applying the slip-boundary conditions.
42     - move initialisation of grid variables from seaice_init_varia to _fixed
43    o adding doc/diags_changes.txt
44    o model/src:
45      do_the_model_io: rename few pkg S/R which are called from do_the_model_io,
46       to avoid "_diags" naming if no relation to pkg/diagnostics.
47      ini_theta,ini_salt: fix (at least compile the code) reading from NetCDF
48       file and only call PLOT_FIELD_XYZ if debugMode=T.
49      remove few PLOT_FIELD_XY calls outside initialisation.
50      remove few unnecessary BARRIER.
51    o pkg/salt_plume: add SaltPlumeSouthernOcean to allow disabling
52      of salt_plume package in Southern Ocean
53    o pkg/thsice:
54     - fix hOceMxL in overlap (needed for sea-ice advection);
55       update output of experiment global_ocean.cs32x15.icedyn.
56    o pkg/seaice:
57     - make the (placeholder-)tracer IceAge a little more meaningful
58      by avoiding ridging of age due to convergent ice flow
59     - add diagnostics for surface temperature, atmospheric and oceanic
60       heat flux, and atmospheric and oceanic ice growth
61    
62    checkpoint61p
63    o eesupp (global_max & global_sum):
64     - add one more element to buffer (start at index 0) for GL_MAX/SUM output;
65     - remove starting & endding barrier (no longer needed)
66    o pkg/mdsio, writelocal:
67       works also in multi-threaded when LOCBIN_IO_THREAD_SAFE is undefined
68       (remove the STOP): uses shared buffer IO to store data from all threads
69       and then let master-thread write nThreads tiles.
70    o pkg/mdsio (read/write field):
71     - tiled IO done in 1 piece (all levels at a time);
72     - new header file "MDSIO_BUFF_3D.h" with 3-D buffers.
73     - multi-threaded: allow to read/write local (non-shared) array
74       (was already working with singleCpuIO ; now works also without);
75       => no longer needs barrier call after reading a file (added inside
76       mds_read/write field).
77     - move barrier calls outside gather/scatter_2d to mds_read/write_field
78    o pkg/obcs/exf
79      - exf_getffieldrec.F: add a few ". _d 0" and
80                            add code to catch the case fldperiod = 0.  
81      - obcs_precribe_read.F: change if statements so that they match
82                              the variable type (_RL)
83      - add a separate exf_iprec_obcs to exf_set_obcs (by default equal to
84        exf_iprec) as part of namelist EXF_NML_01
85    o pkg/mdsio:
86      - read/write tiled (local) files: read/write 1-level tile chunk at a time
87        (instead of segment of length sNx); expected to speed up tiled IO.
88    o pkg/exch2:
89      - take buffer copy from/to array out of S/R exch2_send/recv into new
90        S/R exch2_put/get ; Exch of local variable now works with MPI+MTH
91        (tested by removing commom block statement in SOLVE_FOR_PRESSURE.h).
92      - ad version of send/recv no longer needed (but needs exch2_ad_put/ad_get)
93      - simplify argument list of S/R exch2_get_uv_bounds and exch2_get_scal_bounds
94        (which replaces exch2_get_recv_bounds & exch2_get_send_bounds) by
95        including Topology header file (and common blocks).
96      - implement EXCH_IGNORE_CORNERS in scalar exchange (rx1);
97        remove 2nd exch call in exch2_s3d_rx (no longer needed).
98      - document S/R arg. list (+ update some comments)
99    o pkg/seaice:
100      - added SEAICE_CLIM_AIR code, which permits modulation of surface air
101        temperature and humidity over sea ice based on climatological values.
102      - clean up computation of Hibler+Bryan (1987) stress coupling for the case
103        of LSR (this change is expected to change the results slightly because now
104        it uses slightly difference moduli from the second last LSR solution, but
105        that is more consistent with the stress computations; this part of the code
106        is not tested in the verification experiments)
107      - fix diagnostics for flux of ice in case of B-grid
108      - turn strain rates eij and press into global fields within global
109        common block in SEAICE.h for more straighforward diagnostics
110      - fix diagnostics for principal stress components, press, zeta, eta
111        to give something meaning full
112    o change tiling of global_ocean.cs32x15 (12 tiles, 32x16) and generate
113      new output (all 4 tests) using default rotationPeriod.
114    o pkg KPP:
115      - add flag (LimitHblStable) to avoid limiting BL depth under stable conditions
116      - fix vertical indices in RI_IWMIX (match between KPP grid from 0 to Nr+1
117        and normal grid from 1 to Nr)
118    o Fix computations of L4rdt in mom_calc_visc.F
119    o eesupp:
120      new S/R ALL_PROC_DIE (like EEDIE, without irrelevant threads err msg):
121      should be called before a "stop" if we know that all process are going
122      to stop; if one Proc does call this S/R, will hang in MPI_FINALISE.
123    
124    checkpoint61o
125    o pkg/exch2: change check_depths to issue just a warning (instead of error+stop)
126    o model/src/ini_curvilinear_grid.F:
127       compute angleSin/CosC when they are not read from a file
128    o pkg/seaice:
129       add pseudo time stepping for LSOR
130    o pkg/exch2:
131       temporary fix for exch2_s3d_rx; update results of exp. hs94.cs-32x32x5.impIGW
132    o pkg/seaice:
133       Adding separate sea ice albedo, drag coefficients, and HO in Southern
134       Ocean from those in Arctic Ocean.  See *_south in SEAICE_PARAMS.h
135    o SingleCpuIO:
136       fix bug put before chkp61n (May 11), when more than 2 MPI cpu are used.
137    o pkg/seaice:
138       put exchanged variable in (local) common block for MPI+Multi-Threads
139       to work (necessary with exch1, and for now with exch2 too).
140    o verification: to get more experiments tested with mpi, mth and mpi+mth,
141      change tiling of:
142       aim.5l_Equatorial_Channel, aim.5l_LatLon, dome, exp4, global_ocean.90x40x15,
143       hs94.cs-32x32x5, MLAdjust, offline_exf_seaice & tutorial_plume_on_slope
144      update output of exp:
145       exp4, global_ocean.90x40x15(+.dwslp), MLAdjust(all 5),
146       tutorial_plume_on_slope and hs94.cs-32x32x5 (use default rotationPeriod)
147      + ideal_2D_ocean: use default rotation period + test Global_Sum_SINGLECPU
148                       (note: output.txt generated on faulks using only 1 tile)
149    o eesupp & mdsio (SingleCpuIO):
150     - remove MISSING_TILE_IO (from MDSIO_OPTIONS.h), replaced by run-time
151       parameter "W2_useE2ioLayOut" (read from file "data.exch2").
152       Note: was not effective for globalFile & useSingleCpuIO=F; now fixed.
153     - move MDSIO_SCPU.h (pkg/mdsio) to EEBUFF_SCPU.h (eesupp/inc).
154     - fix GLOBAL_SUM_SINGLECPU when using Exch2; re-use same buffers and same
155       gather/scatter S/R as with SingleCpuIO (=> 1 less 2D global RL array).
156    o pkg/exch2:
157     - new code to set-up W2-Exch2 topology (replace matlab-topology-generator):
158       read parameter file "data.exch2" if it exists; otherwise try default regular
159       cube without blank-tile; new header file "W2_EXCH2_SIZE.h";
160     - update matlab-topology-generator (exch2_setup_cs6_print.m) to be compatible
161       with new code (not to be used, just as a backup solution).
162     - add examples (e.g., for lat-lon-cap_120) of parameter file "data.exch2"
163       in utils/exch2/input.
164    
165    checkpoint61n
166    o eesupp & mdsio (SingleCpuIO):
167      - move mapping to global io-buffer inside gather_2d/scater_2d: this save
168        memory (1 less 2D global RL array); skip 1 buffer copy; and only send/
169        receive real*4 array (instead of real*8) to read/write 32.bit files.
170        (new template for gather_2d/scater_2d, new set of S/R MDS_PASS_R4,8toRL,S
171         and remove new mapping S/R)
172    o pkg/mdsio: in preparation for topology-generator within pkg/exch2:
173      - Change declaration of SingleCpuIO buffer, reduced to only 1 dim.:
174        xyBuffer_size, which is set to W2_ioBufferSize from W2_EXCH2_PARAMS.h
175        when using exch2. Add S/R to map global io-buffer to global model array.
176      - uses exch2_global_Nx,y instead of exch2_domain_nxt,nyt.
177    
178    checkpoint61m
179    o write_utils : change WRITE_1D_R8 to WRITE_1D_RL
180      and add 3 other S/R for other types (R4,R8,RS).
181      Change calls to WRITE_0D/1D_R[4,8,S,L] to match the type of argument.
182    o eesupp/inc/CPP_EEMACROS.h (EXCH & GLOBAL_SUM/MAX macros):
183     - ensure suffix (_R4,_R8,_RS,_RL) correspondance between macro and S/R ;
184     - reduce number of macro definitions (keep only those which are used);
185       can always call directly the corrresponding S/R if needed.
186     - everywhere in the code: change macros (EXCH & GLOBAL_SUM/MAX) suffix
187       _R4/_R8 to _RS/_RL when applied to _RS/_RL variable.
188     Fixed wrong type of arg in:
189       atm2d/put_ocnvars.F cheapaml/cheapaml.F ocn_compon_interf/ocn_apply_import.F
190       ctrl/ctrl_map_ini_ecco.F seaice/seaice_do_diags.F seaice/seaice_model.F
191     To fix: global_sum of var in common block is wrong (multi-threaded) in:
192       dic/dic_atmos.F ebm/ebm_area_t.F ebm/ebm_zonalmean.F sbo/sbo_calc.F
193     To fix: aim_v23/aim_do_co2.F (BARRIER & GLOBAL_SUM within bi,bj loops)
194    o adjustment.cs-32x32x1: test "blank tiles" when compiling with mpi; 2nd
195      "nlfs" mpi test is going to stop when checking for unconnected tile egdes.
196    o eesupp/src: new S/R to stop everyone when 1 (or more) Proc. find an error
197    o pkg/exch2: new S/R EXCH2_CHECK_DEPTHS to check that unconnected tile
198      edges are closed (zero depth); might happen with "blank tiles";
199      for now, disabled if using OBCS.
200    o tools/gemake2: delete modifs from March 27-29 2009 (with option "-mpi":
201      link *_mpi files from "MODS" dir) to return to a strait-forward behavior.
202    o move read_write.F to write_utils.F ; new parameter (maxLengthPrt1D)
203      to reduce length of 1.D array print in STDOUT.
204    o adjustment.cs-32x32x1: changed to oceanic test with 1 continent
205      + use 48 tiles (16x8): this will allow to test "blank tiles".
206    o start to test MPI + multi-threaded (change testreport to skip tests
207      where number of tiles do not match).
208    o genmake2: add option "-omp" to turn on Open-MP ;
209      passed to testreport (if using -mth) ; merge few (*+mth) optfiles.
210    o pkg/exch2 (+ utils/exch2): ignore blank tiles (instead of removing them)
211      and keep the original tile numbering. Note: compatible with old
212      W2_EXCH2_TOPOLOGY.h & w2_e2setup.F topology files.
213    
214    checkpoint61l
215    o Overlaps had been forgotten in calculating ijk keys : fixed
216    o fix cyrus makedepend for gcc 4.4
217    o experiment fizhi-cs-aqualev20:
218      switching to new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE)
219      and generate new output. Note: new output is much closer to the old
220      one (v1.8) generated with pgf77 -O2 on Mar 14 2007 than it is from
221      the previous one (v1.9) generated with pgf77 -O0 on Jun 13 2007.
222    o pkg/fizhi:
223     - change to avoid indices going deliberately over array-bounds
224     - remove unnecessary MPI stuff
225     - perpetual spring equinox with "#define FIZHI_USE_FIXED_DAY"
226     - new version of S/R GETPWHERE available with #define TRY_NEW_GETPWHERE:
227       does not go over array-bounds and therefore returns reliable output.
228     - in fizhi_driver.F & fizhi_turb.F, fix "get_alarm" calls:
229       this S/R has 4 output arguments, which are used inside "get_alarm";
230       when it is called with the same variable "ndum" in place of several
231       output arguments, this produces weird side effect inside "get_alarm"
232      (e.g., datein=dates(n) is overwritten by timein=times(n) since both
233       datein & timein, resp. 2nd and 3rd arg., are pointed to the same "ndum"
234       address) and produces error.
235    o tools/gemake2: (March 27-29 2009)
236      with option "-mpi": link *_mpi files from "MODS" dir (this is what
237      testreport does).
238    o lab_sea experiment: change from 2x1 tiles to 2x2 tiles and regenerate output
239    o pkg/seaice: fix bug in new version of S/R SEAICE_LSR.F:
240       update lab_sea.lsr & lab_sea.salt_plume results
241    o pkg/seaice:
242      Major overhaul of the LSOR solver: change discretization from original
243      finite differences to finite volume. The old routine is still in the
244      file seaice_lsr.F and can be turned on with the CPP-flag
245      SEAICE_OLD_AND_BAD_DISCRETIZATION
246      Along with this change, the discretization of the strain rates is changed.
247      The same flag turns on the old discretization in seaice_calc_strainrates.F
248      All verification experiments with seaice are affected (except for
249      seaice_exf_offline); global_ocean.cs32x15/input.icedyn recovers the old
250      results by setting the above flag.
251      Further changes involve changes in defaults:
252      - ALLOW_FLOODING is defined and turned on by default
253      - SEAICEadvSnow = .true. is now the default
254      - SEAICEadvSalt = .true. is now the default
255      - SEAICEadvAge  = .true. is now the default
256      - SEAICE_clipVelocities  = .false. is now the default
257                                         (as per J. Zhang's recommendation)
258      - B-grid, and thus not tested: SEAICE_TEST_ICE_STRESS_1/EXPLICIT_SSH_SLOPE
259        is defined, SEAICE_TEST_ICE_STRESS_1 is renamed into SEAICE_BICE_STRESS
260      - seaice_growth: replace computation of UG by a simple copy from wspeed
261    
262    checkpoint61k
263    o pkg/seaice: a few bug fixes mostly concerning the metric terms:
264      seaice_lsr: fixed a few metric terms,
265                  affects lab_sea.lsr, lab_sea.salt_plume, seaice_obcs
266                  add more debugging diagnostics
267      seaice_evp: removed superfluous many metric terms of FV discretization
268                  of stress divergence
269                  affects lab_sea, lab_sea.hb87
270      seaice_ocean_stress: removed superfluous many metric terms of FV discretization
271                  of stress divergence for non-evp solver
272                  (this part is not tested anywhere)
273      seaice_calc_strainrates: fixed a bug in no-slip boundary conditions,
274                  they were effectively only half slip
275                  affects lab_sea.hb87
276      updated all relevant verification experiments (except lab_sea//output_adm.txt
277        which was left over, but fails at level 7 & 6)
278    
279    checkpoint61j
280    o pkg/seaice: turn a few hard wired parameters into run time parameters
281    o pkg/seaice/exf/monitor: turn netcdf coordinate variable T into model
282      time in seconds as promised by the usints in seaice_monitor and exf_monitor
283    o pkg/mnc: fix the coordinate variables for multi-tile curvi-linear grids
284      that are not cubed-sphere grids
285    o pkg/seaice: fix a bug for the rare case of SEAICE_VECTORIZE_LSR
286    o pkg/ctrl:
287      fix bug in ctrl_depth_ini.F (EXCH_XYZ was applied to 2-D field xx_r_low)
288    o non-hydrostatic (calc_gw.F):
289      fix viscA4 on CS-grid + fix diagnostics: Wm_Diss & Wm_Advec
290      update output of exp. global_ocean.cs32x15.viscA4
291    o remove backward compatibility for thetaMin,phiMin
292      (replaced by xgOrigin,ygOrigin on Jan 27, 2009)
293    o pkg/exf: fix a serious bug in exf_set_uv.F: do a rotation of the
294      interpolated wind field not only for curvilineargrid=.true., but also
295      for a rotated grid (rotateGrid=.true.)
296    o pkg/exf: add capability to bypass interpolation for runoff
297      by setting yet another CPP-flag
298    o eesupp/src, B-grid exchange:
299      add simple (6 tiles, non MPI) CS exch + standard interface S/R.
300    o autodiff
301      new CPP option ALLOW_TAMC_SINGLEPREC_COMLEV
302      allows to switch to single-prec common blocks;
303      corresponding switch occurs in tamc.h, integer isbyte
304      TAF store directivs "byte" and "kind" seem equivalent;
305      Most tamc.h have been updated correspondingly.
306    
307    checkpoint61i
308    o autodiff:
309      fix autodiff_sore/_restore indices for obcs
310      (spotted by I. Hoteit, M. Mazloff)
311    o pkg/autodiff, pkg/ctrl:
312      Add flag to reduce all tapelev I/O to single-prec.
313      In data.ctrl set
314        doSinglePrecTapelev = .TRUE.
315    o model/src/ini_curvilinear_grid.F, new grid-file format without EXCH2:
316      check in hack for SX8 compiler (for dxV, dyU); remove it afterwards.
317    o pkg/shelfice: fix bug with SHELFICEconserve flag, prepare for
318      real fresh water flux (not yet)
319    o pkg/mdsio & rw:
320     - add argument & option to S/R MDS_WRITEVEC_LOC (avoid Open/Close & write-meta)
321     - add simple interface S/R to MDS_WRITEVEC_LOC in pkg/rw: WRITE_GLVEC_RX.
322    o pkg/flt:
323     - replace FLT_INIT by 3-steps standard initialization S/R: readparms,
324       init_fixed & ini_varia.
325     - clean-up & simplify linear interpolation S/R:
326       move flt_bilinear.F -> flt_interp_linear.F ; add arg. myThid.
327     - fix some indices (mainly vertical index) ; add IMPLICIT NONE.
328     - more efficient I/O, using new options of MDS_WRITEVEC_LOC S/R.
329     - add vert. coordinate & horiz. indices to output files.
330     - change vertical position in initial condition, from index to depth [m].
331     - store horizontal (decimal) indices i,j in common block (instead of coord. x,y)
332       (easier to get to a curvilinear grid) ; delX,delY no longer used.
333    o pkg/ggl90: a few modifications:
334     - fix bottom boundary condition, and interpolation of KappaE
335       near top and bottom
336     - use same set of viscosity/diffusivity for TKE/momnetum/tracer
337     - add smoothing option as in Blanke and Delecluse (1993) (--> ALLOW_GGL90_SMOOTH)
338     - add a few options for mixing-length upper limit (--> mxlMaxFlag)  
339    o rename thetaMin,phiMin -> xgOrigin,ygOrigin
340      (maintain temporary backward compatibility, until next checkpoint)
341    
342    checkpoint61h
343    o pkg/diagnostics with "periodic averaging diagnostics":
344      fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
345    o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
346    o pkg/obcs: fix loop ranges for balancing code
347    o pkg/flt:
348     - improve criteria for finding which tile owns a float.
349     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
350    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
351      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
352      with ocean biogeo)
353    o pkg/flt:
354     - do some cleaning and fix the restart ;
355     - add output.txt in flt_example/results to get this pkg tested.
356    o genmake2: add an EXTENDED_SRC option and flag.
357       for now, cannot be turned on on command line (only through genmake_local)
358    o pkg/mdsio: read/write vector:
359     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
360     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
361       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
362     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
363      (drop to 4 digits matching for grad). But this test does not look very
364      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
365    
366    checkpoint61g
367    o pkg/flt:
368      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
369       + make OPTIONS file more standard.
370      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
371      - fix _BYTESWAPIO CPP-Flag
372      - standard reading of file-parameter "data.flt"
373      - fix argument list of S/R FLT_RESTART
374      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
375    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
376    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
377      a still unfixed compiler/optimization bug
378    
379    checkpoint61f
380    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
381      update results of global_ocean.cs32x15.icedyn test.
382    o move getcon.F from model/src to pkg/fizhi.
383    o pkg/exf: add parameter for extrapolation of temp up to the surface
384       and option to prevent negative evap (in bulk_largeyeager04 only).
385    o Prather Advection scheme: fix tracer conservation for divergent flow
386      (e.g., when using NonLin Free-Surface).
387    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
388    o gmredi (Visbeck-variable-K):
389     - add more parameters to Visbeck-variable-K.
390     - use a 5 points average for dSigmaR in Visbeck-K calculation
391       (more "homogenous": same stencil and same weights as in dSigmaH)
392     - update output of ideal_2D_oce experiment.
393    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
394      (#undef REAL4_IS_SLOW)
395     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
396       coordinate variable
397     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
398       (surface forcing fields), removes some of the functionality
399     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
400     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
401       probably not all: copy _RS surface flux fields to RL field before
402       calling DIAGNOSTICS_FILL
403     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
404       real*4 (CALL EXCH_*_RS) versions.
405     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
406       (generate new output).
407    
408    checkpoint61e
409    o gmredi (Visbeck-variable-K):
410      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
411      - change computation of Visbeck-K where Slope > Smax :        
412        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
413        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
414    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
415      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
416    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
417    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
418      does not become too large (to avoid precision problems in implicit-diffusion
419      solver); update ideal_2D_oce output.
420    o pkg ggl90:
421      - in ggl90_cal.F: compute only one set of visc/diff, used to
422        step forward TKE/T/S/momentum
423      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
424        have Prandlt =1)
425    o gmredi (fm07):
426      - add lower limit on Transition layer thickness + lower limit on 1/lambda
427      - allow to set few more params from data.gmredi
428    o pkg ggl90:
429          - add missing sqrt(2) factor in computation of mixing length
430            scale in ggl90_calc.F
431            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
432    
433    checkpoint61d
434    o adjoint modifs
435      - adapt to new field rhoInSitu
436      - allow to revert from StoreDynVars2D, StoreDynVars3D
437        to individual fields
438        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
439    o store 3-D (in-situ) density in commom block (DYNVARS.h)
440     - save 1 rho computation.
441     - no longer modify T & S inland when using down_slope pkg.
442    o gad_som : allow to switch to SOM advection for T & S without corresponding
443      pickup files (using new S/R: MDS_CHECK4FILE).
444    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
445      (for useSingleCpuIO to work in multi-threaded)
446    o pkg/shelfice:
447     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
448       with SHELFICEtopoFile in data.shelfice
449     - move code for reading ice shelf topography and modifying hFacC into separate
450       subroutines of the shelfice package
451     - separate initialisation of "fixed" and "variable" variables
452     - kTopC is not (yet) replaced by kSurfC, although this is possible
453    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
454    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
455      and rename:
456      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
457      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
458    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
459    
460    checkpoint61c
461    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
462      to add mass source/sink of fluid in the interior (3-D generalisation
463      of oceanic real-fresh water flux).
464    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
465    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
466    o new pkg: down_slope
467      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
468      - presently, modify T & S inland (dwnslp_calc_rho.F).
469        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
470      - implementation for ocean in P-coords not tested.
471      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
472    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
473      (to facilitate conversion of oceanic pkg to p-coordinate).
474    o change FIND_RHO to FIND_RHO_2D :
475      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
476    o new pkg: cheapaml
477    
478    checkpoint61b
479    o exch2:
480      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
481      - no longer depend on the order sequence (N,S,E,W).
482      - 3rd exchange no longer needed (tested with 24 tiles).
483      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
484      - exch_UV_A-grid readily available (but not yet tested).
485      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
486      (both are no longer needed) in exch_uv: no effect in forward run; but
487       get truncation error differences with adjoint exch.
488    o exch2:
489     - change index-bounds storage (moved from target to local tile,
490       more intuitive this way) ; rename/remove some variables.
491     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
492    
493    checkpoint61a
494    o exch2/matlab-topology-generator:
495      fix bug in index bounds for N-S internal exchange (hard to tell if this
496      had any effect on the solution).
497    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
498      is exceeded
499    o testreport: modify syntax of awk, so that it works also with
500      awk, and not only with nawk and gawk
501    
502    checkpoint61
503    o autodiff
504      Change default for TAF usage by removing argument '-nonew_arg'
505      This changes TAF subroutine argument list (ordering of active var.)
506      Omission of this flag leads to incompatibility w.r.t. TAMC
507      To restore TAMC-compatibility, need following modifs:
508      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
509      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
510      Tested TAF version is 1.9.22
511      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
512    
513    checkpoint60
514    --->>> This is the last checkpoint for which generating the adjoint
515    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
516    --->>> by default.
517    --->>> Future checkpoints will ommit this flag by default.
518    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
519    o pkg/grdchk: Add gradient check to etan0 perturbations.
520    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
521    o pkg/autodiff: more flexibility in zeroadj.
522      model/src: modifying do_oceanic_phys.F accordingly.
523    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
524    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
525      special setup of gmredi for which the adjoint is stable
526      enough for parameter optimization.
527    o bridging the gap between eddy stress and GM.
528      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
529          along with a change in CPP option (now ALLOW_EDDYPSI).
530      -> when using GM w/ GM_AdvForm:
531          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
532          is applied either in the tracer Eq. or in momentum Eq.
533          depending on data.gmredi (intro. GM_InMomAsStress).
534      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
535      The key modifications are in model/src/taueddy_external_forcing.F
536      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
537    
538    checkpoint59r
539    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
540      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
541      fix option to read coriolis(@ cell-corner) from files with CS-grid.
542    o pkg/mnc: add some attributes to standard 1D-coordinate variables
543    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
544      mass points, when using mnc for output
545      - add runtime parameter (missing_value, missing_value_int) to override
546        default (which is the value of getcon('UNDEF'))
547    o pkg/mnc: prepare mnc for the actual use of missing values with the
548      diagnostics package: small fix in mnc_cw_readwrite.template and more
549      initialisation of never used fields
550      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
551      versions
552    o pkg/thsice/thsice_ini_vars.F added default initial values so that
553      thermodynamics sea ice solver does not blow up when some initial fields
554      are missing.
555    o move from external_forcing_surf.F to ini_forcing.F
556      the p-coord. hack consisting in using pLoad to set phi0surf ;
557      update output of tutorial_global_oce_in_p (affected @ truncation level).
558    o Freshen up a bit hs94.1x64x5, notably:
559      remove rotationPeriod and tRef=5*0. (adjoint only), and add
560      exactConserv=.TRUE.
561    o pkg/generic_advdiff:
562      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
563      applies to files where Temperature & Salinity 2nd Order moments are used.
564    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
565      this uses a dynamically allocated internal state data structure
566      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
567      and requires a fortran 90 compiler
568    
569    checkpoint59q
570    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
571       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
572    o Refresh tutorial_global_oce_biogeo, notably:
573      - change bathymetry (put back seamounts in ACC, use hFacs)
574      - change EOS (POLY3 --> JMD95Z)
575      - use Bryan-Lewis vertical diffusivity
576      - use multidimensional advection
577      - remove old virtual virtual in dic pkg, now done through ptracer pkg
578      - change a couple of parameters in dic pkg
579    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
580    o pkg/obcs: change default to OBCSfixTopo = .true.,
581      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
582      - replace "debugMode" with "debugLevel .GE. debLevB"
583    o implementation of TAF directives for gchem,cfc,dic
584    o remove "exp5" (replaced by tutorial_deep_convection).
585    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
586      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
587      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
588      --> changes results in exp4, seaice_obcs
589    o tutorial_deep_convection :
590      update the set-up and increase resolution and domain size ; start
591      from pseudo initial conditions = output at t=120mn in order to see
592      something happening when running testreport.
593    o pkg/seaice: add os7mp as an advection scheme
594                  add check for advection schemes
595                  add a flag for restoring T and S underneath sea ice
596    o pkg/my82: add netcdf-support and diagnostics
597    o thsice pkg:
598      - Now hsMax limits snow height by turning it into ice following
599        flooding scheme (and now conserving energy)
600      - Slight rewriting of the formula in thsice_calc_thick.F
601      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
602      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
603    
604    checkpoint59p
605    o gchem / dic / cfc :
606      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
607      - add new parameter files: "data.dic" & "data.cfc" ;
608      - various re-arrangement in initialisation & header file ;
609      - fix tutorial_global_oce_biogeo for multi-threaded test.
610    o pkg/dic: test for "pickup_dic" file when restarting ;
611      if no pickup-file, can restart with a re-initialised pH (same as it did
612      before) providing pickupStrictlyMatch is set to False.
613    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
614      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
615    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
616      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
617    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
618     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
619       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
620    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
621       scheme to use for vorticty-term ;
622     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
623       (with default selectVortScheme, return to original discretisation)
624     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
625    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
626    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
627      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
628      also fix diagnostics VISCAHW & VISCA4W.
629    
630    checkpoint59o
631    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
632    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
633      move a few statemens out the main loop into separate loops
634    o pkg/shelfice:
635      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
636        (kg/m^2/s), does not break tests, because in verification/isomip,
637        rhoConstFresh=rhoConst (by accident)
638      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
639      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
640        new file model/src/seawater.F, so that they are available for all pkgs.
641      - convert potential temperature into in-situ temperature. This changes the
642        isomip tests => update tests
643    o add a flag writePickupAtEnd (default=true) to be able to suppress
644      writing a pickup at the last timestep
645    o tools/mpack-1.6 :
646      - disable automake (not working) and autoconf (not needed).
647      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
648        also cleaner with much less compilation warnings.
649    o pkg/profiles:
650      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
651      (for "less than 32 characters name" compiler requirement)
652    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
653      conditions that have a different sampling frequency than S/T/U/V obcs
654    o pkg/diagnostics (stats-diags):
655      - fix global Min/Max in case 1 processor get only empty tiles
656    o genmake2: replace (4 times)
657         make genmake_tc_1.o >> genmake_warnings 2>&1
658      with
659         COMM="$CC $CFLAGS -c genmake_tc_1.c"
660         echo $COMM >> genmake_warnings
661         $COMM >> genmake_warnings 2>&1
662      to make genmake2 always see the value of CC as specified in the optfile.
663    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
664      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
665      - modify verification advect_cs test to test SOM-advection on CS-grid.
666    o pkg/ctrl:
667      - Rewrite of ctrl_map_ini_ecco.F,
668        introducing a generic routine (ctrl_map_ini_gen.F).
669      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
670    
671    checkpoint59n
672    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
673      number in dedicate array "hdiag":
674      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
675        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
676      - many small changes (integer format) for large number of diagnostics
677      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
678        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
679    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
680      usingSphericalGrid, this allows to define the rotated grid coordinates
681      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
682      geographical coordinates according to the inverse of the rotation defined
683      by the Euler angles, so that Coriolis parameter and online-interpolation by
684      exf works with the geographical coordinates on XC/YC/XG/YG.
685      Naturally, this feature does not work with all packages, so some
686      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
687      profiles), because there the coordinates are assumed to be regular
688      spherical grid coordinates.
689    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
690      - introduce isopycnal diffusion coefficient control.
691    o tools/adjoint_options:
692      - additional control vector components.
693    o pkg/mnc: have mnc create marginally meaning full coordinate variables
694      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
695    o pkg/mypackage:
696      - add example of read/write pickup for state-var ;
697      - add entry points to the main code for state-vars diags & write-pickup.
698    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
699      transitions for useExfYearlyFields
700      - add new subroutine that determines the file to read from for
701        use*YearlyFields = .TRUE. and .FALSE.
702      - add a verification experiment to global_with_exf that tests
703        useExfYearlyFields with USE_EXF_INTERPOLATION defined
704    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
705      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
706      subroutines (which could be generated from a template, because they are
707      almost identical), for now they are included in obcs_prescribe_read.F for
708      simplicity
709    o pkg/exf:
710      - add a little more diagnostic to exf_interp_read (in analogy to
711        mds_read_field, can be turned off with debugLevel < debugLevA=1)
712      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
713        ugly but fast by unrolling short inner loops, inserting a unroll=8
714        directive in routine lagran, and splitting a loop and making do while the
715        outermost loop (the latter requires the intoduction of index arrays)
716    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
717    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
718      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
719    o verification/seaice_obcs: updated for restart test and latest options
720    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
721      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
722      for now this is only available for the C-grid code and also within
723      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
724    
725    checkpoint59m
726    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
727      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
728    o gad_som : fix flux output (& diagnostics) to have same units as other  
729      advection scheme fluxes (was previously multiplied by deltaT).  
730    o added verification/seaice_obcs both to test seaice open boundaries
731      and to provide an example matlab scrpt for generating them
732    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
733    o pkg/salt_plume: clean up salt_plume_frac.F to
734      remove redundancy in PlumeMethod 1 and 4
735    o pkg/kpp: added saltplume diagnostics
736    o pkg/obcs and pkg/seaice:
737      - do not set uice and vice to zero when OB*icefile are unspecified
738      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
739      - moved seaice tracer obcs after call to seaice_growth
740    o pkg/salt_plume: added various options for salt plume depth
741      criterion and for vertical distribution of the salt
742    
743    checkpoint59l
744    o pkg/ptracers: new version of ptracers pickup:
745      read meta file and write only fields which are needed to restart.
746      ( same logic as main pickup file ; also using pickupStrictlyMatch )
747    o pkg/seaice:
748      - add timescale for melting due to warm mixed layer as a means of
749        setting SEAICE_availHeatFrac more conveniently
750      - add a CPP-flag/runtime parameter check for flooding algorithm
751      - reformulated availHeat in seaice_growth.F to be independent of AREA
752    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
753      unit changes
754    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
755    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
756      SX vector computer.
757    o pkg/seaice:
758      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
759        seaice forcing fields can now be read only through pkg/exf
760      - removed some unused halos
761    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
762    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
763      or U/VICE from U/VWIND before computing U/VSTRESS
764    
765    checkpoint59k
766    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
767      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
768    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
769      all experiments pass when compile with un-initialised var. checking option.
770    o added pkg/salt_plume
771    o script to test restart (for now, in MITgcm_contrib/jmc_script)
772    o pkg/seaice: new read/write pickup version.
773      read meta file and write only fields which are needed to restart.
774      ( same logic as main pickup file ; also using pickupStrictlyMatch )
775    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
776    o lab_sea.hb87: modify the domain & update output.hb87.txt :
777      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
778      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
779      process. Fixed here by closing the domain at the Northern boundary.
780    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
781    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
782      a set of consecutive levels in/from a 3-D array.
783    o pkg/ptracers:
784      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
785      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
786    
787    checkpoint59j
788    o in pkgs: dic, obcs, offline, rbcs:
789      standard way to compute coeff. for time interpolation between 2 time reccords
790      which retains full precision (& make results less dependent on compiler).
791      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
792    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
793      packages instead of reading ice cover and wind speed separately
794    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
795     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
796      to allow to compile customized code before the update)
797    o cleaning-up:
798      - fix CPP instruction syntax in pkg/obcs
799      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
800        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
801      - fix some threads issue in IO parts.
802    o pkg/dic:
803      - add tons of "_d 0" (--> much better testreports !)
804       and then update outputs of tutorial_global_oce_biogeo
805    o pkg/mom_fluxform:
806      add a special version of momentum advection intended to conserve momentum
807      next to a bathymetry step or a coastline edge. (default = off = #undef)
808    o new read/write pickup version:
809      - for now, only implemented for main (mdsio) pickup file.
810      - write out only what is needed to restart; merge pickup_nh , pickup_ph
811        and main pickup together.
812      - read meta file; read only what is needed to restart; stop if a field
813        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
814        if it make sense (even if the restart is not perfect).
815      - if no meta file, assume that pickup to read corresponds exactly to
816        a pickup that would currently be written.
817      - read pickup written in the old format (until checkpoint59i) if it
818        recognizes an old meta file (no field-list).
819      - add a meta file in exp. which starts from a pickup: 2 cases:
820        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
821         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
822        b) a meta file describing the content of the associated pickup file
823         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
824    o pkg/mdsio & pkg/rw:
825      - new routine to read a meta file ; new set of routine to read
826        Multiple-fields file (with meta file).
827    o added open boundary conditions capability for seaice
828        HSNOW, HSALT, UICE, and VICE
829    
830    checkpoint59i
831    o adjoint:
832      * fix multiDimAdvection adjoint
833        (partial recomputation problem by TAF for fVerT(:,:,kDown)
834        and comlev1 size definition (maxpass vs. max. number of tracers)
835      * verification/global_ocean.90x45x15 adjoint now tests
836        NLFS and multiDimAdvection using DST3 (=30)
837      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
838    o pkg/kpp: add "_d 0" to real constant (if missing);
839      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
840      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
841    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
842      for internal parameters related to restart process (formerly from PARAMS.h)
843      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
844    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
845      as argument. (only atm2d & obcs write_pickup have not yet been updated)
846    o pkg/monitor:
847      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
848      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
849      - account for deep Atmosphere factor and density factor (anelastic)
850    o added open boundary conditions capability for seaice HEFF and AREA
851    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
852      thermodynamics
853      - requires a little reorganization, which affects the testreport results
854        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
855        so that now the conservative form is tested
856      - add a few comments
857    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
858    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
859    o add new diagnostics to seaice: advective, diffusive fluxes (only for
860      multidim-advection, for scheme 2 they are not filled) and transports,
861      thermodynamic growth rates
862    o change units of EmPmR (inside the code, + within coupling interface)
863      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
864      Affects results @ truncation level (cg2d match) and update output of
865       experiments: lab_sea(6), global_ocean.90x40x15(10),
866      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
867      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
868      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
869      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
870    
871    checkpoint59h
872    o pkg/exf:
873      - improve vectorization by moving if-statement out of loops in
874        exf_mapfields, exf_radiation
875      - exf_bulkformulae.F: introduce 2D fields and vectorize code
876    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
877    o testreport:
878      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
879        monitor & update offline_exf_seaice exp. output.
880      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
881    o pkg/seaice:
882      - bug fix in the evp solver: boundary conditions were affected be
883        masking of zMax/zMin (changes results)
884      - minor bug fix in boundary conditions in seaice_calc_strainrates
885        (changes results for no_slip)
886      - seaice_lsr.F: make interpolation of eta dependent on boundaries
887      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
888      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
889        stress formulation and no-slip boundary conditions
890    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
891      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
892    o pkg/seaice: a first HSALT time stepping equation has been checked in
893    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
894      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
895      without requiring DO-IF statements
896    o pkg/thsice:
897      use continuous power-law function for partition of energy between lateral
898      melting/freezing and thinning/thickening ; old code using step function
899      still available with #undef THSICE_FRACEN_POWERLAW
900      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
901    o testreport: change AD testing : check against results/output_adm.txt
902      using same scripts as for forward test.
903    
904    checkpoint59g
905    o adjoint testing: in preparation for changing testreport:
906      - output format: cost and grad written on separated lines
907      - ad output results in directory "results" (instead of "results_ad")
908    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
909    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
910    o pkg/ecco: allow user defined cost function contributions
911    o testreport:
912      Allow to choose (per experiment) the list of tested output variables
913       and the main variable (used to issue a pass/FAIL ) ;
914      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
915      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
916      Also modify printing of summary:
917       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
918       b) echo the list of tested variables in the individual summary.txt of
919          each experiment.
920    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
921      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
922      (but still depend on the tile decompostion of the domain).
923    o pkg/seaice: change a discretization detail to make the B-grid code
924      "more symmetric". This change is likely to remove all "ridges/leads" that
925      where quasi-aligned with the grid in B-grid solutions. It may also be
926      the solution to the stress coupling issues with the B-grid.
927    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
928      remove .cvsignore from input dir. (since testreport no longer run here).
929    o pkg/thsice:
930     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
931     - fix reshaping of sea-ice just after advection:
932       melt all the ice only if ice-volume is too small.
933     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
934       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
935     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
936    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
937      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
938    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
939      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
940      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
941      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
942      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
943      -> update output.txt
944    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
945     this affects truncation error: -> update output.txt of exp:
946      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
947      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
948    
949    checkpoint59f
950    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
951    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
952      a bounded range (in forward mode)
953    o pkg/ecco, ctrl, autodiff and mom_common:
954     internal parameter controls, completements of implementations
955    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
956    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
957      (not seem any difference in testing results).
958    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
959       at face corners.
960    o pkg/generic_advdiff:
961     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
962      loop range indices for computing vertical advection tendency
963      and do the calculation in the interior only (no overlap) ;
964      for now, only implemented for SOM advection (to save CPU time).
965     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
966    o exch2 adjoint
967      First set of changes:
968      - add exch2 hand-written adjoint templates
969      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
970        This will require cleanup in pkg/autodiff/*.F
971        (changed routines currently kept separate in verif. code/)
972      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
973        that used to hide exch2 or cubed-sphere specific code
974        (commented via 'cph-exch2')
975    o pkg/seaice
976      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
977    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
978       output of global_ocean.cs32x15.thsice .
979    
980    checkpoint59e
981    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
982      for B-grid vector (not yet tested) and C-grid vector (<- only used
983      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
984    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
985      (#ifdef ALLOW_SALT_PLUME)
986    o gather_2d/scatter_2d: removed halo regions
987    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
988      scheme and the corresponding test case (under front_relax dir). For now,
989      only available with Skew-flux form and not yet tested in realistic set-up.
990      adjoint: store directives updated, but gradient checks deteriorated,
991      so maybe GM/Redi adjoint is now broken.
992    o seaice adjoint
993      * add AREA, HEFF, HSNOW as control variable
994        (should not change lab_sea results)
995      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
996    o pkg/seaice:
997      * added computation of saltFlux in seaice_growth;
998        For time being, sea ice salinity is assumed constant
999        contribution of snow flooding to freshening of sea ice is neglected.
1000        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
1001        defaults to 0.0 in order to maintain backward compatibility.
1002        Typical values for SEAICE_salinity are 4 to 10 g/kg.
1003      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
1004      * added SEAICE_availHeatFrac, which specifies fraction of surface level
1005        heat content used to melt or grow ice
1006      * commented out cap of HICE: it helps keep ice thinner
1007      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
1008      * applied OBCS T/S mask to HEFFM sea ice mask
1009    
1010    checkpoint59d
1011    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
1012     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
1013     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
1014    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
1015     and change default value of parameter "GM_Small_Number";
1016     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
1017       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
1018       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
1019    o pkg/ecco: cost function when applying pkg/smooth to controls
1020    o pkg/ctrl: add forcingPrecond run time parameter
1021    o pkg/seaice:
1022     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
1023     - fix bug in metric terms of u-equation in LSR solver (implicit part),
1024       changes verification/lab_sea
1025     - rearrange implicit part of u-equation in LSR solver to make it easier to
1026       read, understand, and debug. This causes changes at the truncation level.
1027     - fix (serious) bug in the boundary conditions (sign error in the implicit
1028       part) of the LSR solver. Changes all LSR results.
1029     - fixed problem with HSNOW initialization to avoid thick snow when AREA
1030       is initilized with small values - does not change lab_sea results.
1031     - added HsnowFile initialization capability
1032    o pkg/smooth: addition to model/src and pkg/ctrl so allow
1033     initialization of pkg/smooth and application to control vector
1034    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
1035    o dependencies: pkg/profiles requires pkg/cal
1036    o pkg/profiles:
1037     - added option ALLOW_PROFILES_GENERICGRID
1038         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
1039         that interpolation information (grid points and coefficients) is provided
1040         within the netcdf input files.
1041         -> sample matlab scripts can be found in MITgcm_contrib/gael
1042         that allow you to prepare netcdf input files.
1043     - also modified: cleaner include statements, cleaner error print statements,
1044       cleaner stops when error, and more tests of the netcdf input files consistency.
1045    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
1046    o pkg/seaice:
1047     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
1048       requires a new routine: seaice_diagnostics_fill.F
1049     - make sure that seaice does not move if not forced (pressure replacement
1050       method, Hibler and Ip, 1995), changes results
1051     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
1052     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
1053       It is turned off by default (=-1.), because it changes the results.
1054     - make it possible to read AREA from a file, too.
1055    
1056    checkpoint59c
1057    o add S/R and diagnostics for oceanic mixed-layer depth
1058    o move GMRedi call after all vertical mixing schemes (including KPP)
1059    o pkg/thsice:
1060     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
1061      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
1062    o pkg/obcs:
1063     - bug fix for balance code
1064    o pkg/seaice:
1065      - allow values of SEAICE_elasticParm > 1
1066      - add new parameter SEAICE_evpTauRelax as an alternative
1067        to SEAICE_elasticParm
1068      - make lsr boundary conditions free slip (by default), changes result
1069      - add code for no slip boundary conditions for lsr
1070      - set minimum of zeta to zero (and not 4e8) (changes results)
1071      - add a cap on AREA after advecting AREA if seaice_growth is not called
1072    o change calculation of Visbeck K:
1073      - no longer depend on tapering scheme; instead, compute slope (limited
1074        by GM_maxSlope). this is equivalent to what was comuted before with
1075        clipping or linear tappering.
1076      - fix vertical averaging (wrong by 1/2 level)
1077      - leave the old version (but will not be maintained) within
1078        #ifdef OLD_VISBECK_CALC / #endif
1079      - update output of exp. ideal_2D_oce
1080    o change error catch in calc_r_star to improve vectorization
1081    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
1082      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
1083    o adjoint:
1084      Re-organized adjoint checkpointing according to Matt Mazloff
1085      (but with modifs/completions/cleanups)
1086      Storing is now bundled into large arrays to optimized I/O
1087      (and second step in cleanup of the_main_loop)
1088    
1089    checkpoint59b
1090    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
1091      - export/import (between ocean & coupler) fields needed for ocean DIC.
1092    o pkg/seaice:
1093      - get rid of three more exchanges seaice_calc_viscosities (required
1094        different loop boundaries in seaice_lsr and seaice_ocean_stress)
1095      - bug fix in seaice_ocean_stress (update of lab_sea required)
1096      - reduce loop boundaries to necessary minimum also in seaice_evp
1097      - go back to the old way of computing deltaC/Z as the adjoint likes that
1098        better
1099    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
1100      passive tracer to an Age Tracer) + update output.txt
1101    o pkg/exf:
1102      - implement A-grid / C-grid selection for wind-stress input files.
1103      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
1104      for now, in exf_bulk_largeyeager04.F only :
1105      - change implementation for case where windspeed + 2. components wind-stress
1106        are read-in. AND use rhoConstFresh to convert evap.
1107    o pkg/seaice:
1108      - use correct EXCH_UV for wind-forcing (on A-grid).
1109      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
1110        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
1111    o pkg/exf:
1112      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
1113      EXF_INTERPOLATION:
1114      - merge global_with_exf/code version of exf_interp_read.F
1115        to the main code ;
1116      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
1117        reading the file ; Important: This options needs to be defined to recover
1118        previous code.
1119        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
1120      - no longer loose real*8 precision along the way when using exf_iprec=64.
1121    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
1122      - change discretisation of evp-solver in order to avoid another exchange
1123        (changes lab_sea) and clean up a little
1124      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
1125        help the adjoint (this also changes the results slightly)
1126      - add a few "_d 0" where they had been missing in seaice_evp.F
1127      - cleaning up: remove unused seaice_calc_rhs.F
1128    o pkg/exf: some cleaning-up:
1129      - change various "constants" into runtime parameters
1130      - cleaned-up Large&Yeager04 routine which should eventually
1131        replace exf_bulkformulae.F (changed names of S/R and CPP)
1132        and merged various ALLOW_ATM_WIND options
1133     only used with thsice pkg (in thsice_get_exf.F):
1134      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
1135        which are used when useStabilityFct_overIce=TRUE (= the default)
1136      - change default values of ice & snow emissivity and scale downward LW
1137        by ice & snow emissivity.
1138    o pkg/thsice:
1139     fix few little problems, in thsice_calc_thickn.F:
1140      - growth vertically (and not laterally) if iceFrac == iceMaskMax
1141      - melt only laterally if hIce < hThinIce (as the comments say)
1142      and in thsice_extend.F:
1143      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
1144      - start to form ice as soon as the minimum ice-volume is reachable.
1145     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
1146      and cpl_aim+ocn
1147    o pkg/kpp
1148     - move computation of surface related input fields to KPP into a new
1149       subroutine kpp_forcing_surf.F
1150     - remove wrong (within bi,bj loops) EXCH calls.
1151     - little cleaning (add argument myThid in last position, cvs header ...)
1152     - for now, fix conservation problem by exchanging KPPviscAz (may not
1153       be the best fix)
1154    o pkg/seaice
1155     - check for inconsistent evp parameter/cpp-flag combination
1156     - remove leftover errIO flat for obsolete name list error handling
1157    o OpenAD
1158     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
1159    
1160    checkpoint59a
1161    o pkg/seaice: some parameter clarifications and a little bit of clean up
1162    o pkg/thsice: rename run-time parameters:
1163       himin       -> hIceMin
1164       himin0      -> hThinIce
1165       hihig       -> hThickIce
1166       i0          -> i0swFrac
1167       transCoef   -> bMeltCoef
1168       frac_energy -> fracMelting
1169      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
1170       with default values (for now) that do not change the results.
1171      remove old version of thsice vars advection in pkg/seaice.
1172    o in FFIELDS.h:
1173      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
1174      - make pLoad & sIceLoad always available (but still only used if
1175         ATMOSPHERIC_LOADING is #define).
1176    o pkg/kpp: replaced _KPP_RL with _RL
1177    o bug fixes for vertical diffusivity computations when both KPP and
1178        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
1179        are no longer updating the vertical diffusivity array
1180        (passed as argument) but are (re-) setting those arrays.
1181    o pkg/seaice: fix bug in evp solver, while doing that
1182      - change (improve?) discretization of stress computations for both
1183        cgrid-lsr and evp solver
1184      - add a new routine to compute strain rates
1185      - the above changes lab_sea results
1186      - add no slip conditions for evp solver (off by default), lsr-version
1187        may follow
1188      - fix exchange for shear at Z-points (does not change lab_sea)
1189      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
1190        (to force the user to pick a time step since there is not "safe" way
1191        of choosing it)
1192      - add principal stress diagnostics
1193      - rearrange fields for evp a little to avoid having to call a: too many
1194        exchanges and b: exchanges for stress trensor components which we do
1195        not have.
1196      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
1197        of evp, complete rewrite for lsr case (latter is does not yet work
1198        in all cases)
1199    o pkg/kpp: add code to have mixing in shelf ice caverns
1200      - add myThid to all kpp routines (long overdue)
1201    
1202    checkpoint59
1203    o pkg/exf:
1204      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
1205        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
1206      - move exf header files from lower_case.h to UPPER_CASE.h ;
1207        add missing cvs Header & Name
1208      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
1209      - add namelist param. selectStressGridPosition, exf_monFreq
1210      - retire many _CLIM routines, and remove data.exf_clim
1211        + params moved to data.exf
1212        + climsst, climsss now handled by exf_set_gen, i.e.
1213          climss?period=0 refers to constant field,
1214          climss?period=-12 to monthly forcing
1215      - split up namelists in data.exf
1216    o pkg/seaice:
1217      - remove seaice_exch and seaice_exch_uv
1218      - remove superfluous exchange of theta
1219      - add myThid to seaice_budget_ocean/ice
1220      - add new interface for atmospheric wind forcing (C-grid only)
1221        + new routine
1222        + two new field (taux, tauy for stress over ice)
1223        + removed one global field (DAIRN) for C-grid case only
1224    o pkg/thsise
1225      - 2nd set of modifs for thsice adjoint in conjunction with exf
1226    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
1227    
1228    checkpoint58y_post
1229    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
1230      vertical diffusivity, similar to that in MOM4; turned on using
1231      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
1232      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
1233    o Added capability for 3D specification of background vertical diffusion
1234      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
1235      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
1236      "data" file that contains the 3D vertical diffusivity coefficients.
1237    o ice dynamics (pkg/seaice) with thsice thermodynamics:
1238      - add code within pkg thsice to advect & diffuse sea-ice fields
1239      similar to (and will replace) what has been added in  seaice_advdiff.F,
1240      but: - conserving Mass, Heat & Salt.
1241           - better when using non-linear advection scheme (not yet fully tested)
1242           - can also be used in atmospheric set-up (for now, only the diffusion).
1243    
1244    checkpoint58x_post
1245    o IO option for global-file compact format:
1246      - add options when generating topology (utils/exch2/matlab-topology-generator)
1247      - add I/O capability (pkg/mdsio).
1248      - adapt utils/matlab/rdmds.m to read this format.
1249      for now long-line format not yet supported by pkg/mdsio (& exch2).
1250    o shelfice: add a few diagnostics
1251    
1252    checkpoint58w_post
1253    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
1254      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
1255      (and replace horiVertRatio in NH code).
1256      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
1257                         and tutorial_plume_on_slope (sensitive to truncation)
1258    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
1259      directly to drive seaice model (C-grid only)
1260    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
1261     - reintroduce computation of wind from stress,
1262     - compute tau (in exf_bulkformulae.F) from windstress averaged to
1263       mass points to avoid tau = 0
1264     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
1265    o rdmnc.m: make it work with "global" files created with gluemnc
1266    o rdmnc.m : some improvements in dealing with singleton dimension
1267      (tested on all testreport mnc output files).
1268    o genmake2: disable pkg/profiles if netcdf test fails.
1269    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
1270    o move call to cal_readparms up to make calendar parameters/variable available
1271      to all packages
1272    
1273    checkpoint58v_post
1274    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
1275      useDynP_inEos_Zc tested.
1276    o pkg/exf: changes to properly interpolate/mask/scale initial fields
1277    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
1278      and portions thereof.  See read_cs.txt for description and examples.
1279    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
1280      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
1281      following the great-circle arc between those 2 points.
1282    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
1283      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
1284    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
1285     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
1286     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
1287     - still needs work (not working with some options ; efficiency to improve)
1288       and serious testing.
1289     - use this scheme for temperature & salinity in 2 advection test exp.:
1290       advect_xy & advect_xz, respectively.
1291    
1292    checkpoint58u_post
1293    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
1294    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
1295    o testreport: add option "-skipdir" to skip some test.
1296    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
1297      momentum calculation.
1298    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
1299    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
1300      remove checkpoint.F and the_correction_step.F (no longer used);
1301      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
1302    o add option (linFSConserveTr) to correct for tracer source/sink due to
1303      Linear Free surface
1304    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
1305    o pkg/thsice: fix reading mnc-pickups
1306    
1307    checkpoint58t_post
1308    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
1309    o pkg/mdsio:
1310     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
1311       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
1312       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
1313     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
1314     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
1315       either MDS_READ_FIELD or MDS_WRITE_FIELD )
1316     - new S/R (to replace MDSWRITEMETA), which allows to write more
1317       informations (variable names, time ...) to meta files.
1318     - modify rdmds.m to give back the meta file content.
1319    o pkg/diagnostics: change vertical interpolation to be safer, and more
1320       flexible (define p-levels to interpolate to in data.diagnostics);
1321      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
1322       diagnostic pointer.
1323    o pkg/seaice: more cleaning up of seaice_growth, added many comments
1324    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
1325    o fix multi-category seaice:
1326     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
1327       SEAICE_MULTICATEGORY
1328     - fix short wave heat flux
1329    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
1330       and allow to use EVP solver. Change forward lab_sea: test both EVP
1331       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
1332    o Initial check-in of lab_sea adjoint
1333      (very similar to natl_box_adjoint/code_seaice)
1334      * used C-grid and EVP solver
1335      * used KPP, GM/Redi
1336      * uses inAdExact=.TRUE.
1337      * gradient checks fail for both ADM and TLM
1338        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
1339        f.d. gradients actually seem more problematic than ADM, TLM gradients;
1340        issue is related to forward mismatch between g77 an ifort
1341    o pkg/seaice: overhaul of thermodynamics
1342     - growth.F and groatb.F are replaced by new routine seaice_growth.F
1343     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
1344     - move a few global fields out of SEAICE.h into seaice_growth.F and
1345       make them 2D (FICE/QNETO/ ...)
1346     - remove FO (it is the same as QNETO)
1347     - introduce a few local fields to avoid modifying external fields such
1348       as atemp, etc.
1349    
1350    checkpoint58s_post
1351    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
1352      changed exf_set_gen.F so that
1353        genperiod=0 means input file is one time-constant field and
1354        genperiod=-12 means input file contains 12 monthly means
1355    o CG2D: use pre-computed solver main-diagonal (stored in common block);
1356      this affects truncation error ; generate new output file for exp. which
1357      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
1358        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
1359        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
1360        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
1361        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
1362        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
1363    o start implementation of deep-atmosphere and anelastic formulation
1364    o verification: remove 2nd copy of input files and use script "prepare_run"
1365      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
1366    o mom_common/vecinv/fluxform: fix a few initialisation isssues
1367    o profiles: fix for multithreaded case
1368    
1369    o diagnostics: rename few diags:
1370      s/'PRESSURE'/'RCENTER '/g
1371      s/'TICE    '/'oceFreez'/g
1372      s/'TAUX    '/'oceTAUX '/g
1373      s/'TAUY    '/'oceTAUY '/g
1374      s/'SWFLUX  '/'oceQsw  '/g
1375      s/DIFx/DFxE/g
1376      s/DIFy/DFyE/g
1377      and add few ocean-forcing diagnostics:
1378      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
1379    o modifications to pkg/seaice/growth.F and budget.F, which change results of
1380      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
1381      as actual snow thickness.  It now refers everywhere to effective snow
1382      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
1383    
1384    checkpoint58r_post
1385    o modifications to pkg/seaice/growth.F, which change results of
1386      lab_sea experiment: fixes pertain to melting snow over open water, to
1387      masking EVAP under sea ice, and to using the correct AREA variable for
1388      computations of EVAP, PRECIP, HSNOW, and GHEFF
1389    o add ability to read bathy, salt, and theta using MNC (off by def)
1390    o add flooding algorithm and advection of HSNOW for pkg/seaice;
1391      both are turned off by default and do no change any results
1392    o seaice advection with pkg/thsice: a step toward the use of non-linear
1393      advection scheme, but #ifdef or commented out for now (requires more EXCH).
1394    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
1395      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
1396      in natl_box (affects results @ truncation level: update output.txt)
1397    o multi-threading and IO:
1398      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
1399      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
1400        (needed to work with SingleCpuIO): tested in all verif. exp.
1401    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
1402      affects the results (but none of the verification test uses this scheme).
1403    o Adding some pkg/diagnostics capability to pkg/seaice
1404      (will certainly be subject to changes)
1405    o ctrl: adding new control variables:
1406      lwflux, lwdown, evap, snowprecip, apressure, runoff
1407    
1408    checkpoint58q_post
1409    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
1410      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
1411      high_res_cube configuration by 4% on Columbia.
1412    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
1413      add (in global_with_exf/code) a version of EXF_INTERP_READ without
1414      dynamical allocation (seems to work in multi-threaded).
1415    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
1416      single CPU io) so that TAF does not have to see EESUPPORT.h
1417    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
1418    
1419    checkpoint58p_post
1420    o obcs: stop if obcs is used with useCDscheme = .true.
1421    o shelfice:
1422     - fix a sign error so that no slip at shelfice interface works
1423     - remove stop for combination non-hydrostatic code and shelfice. That does
1424       not mean, that the results are correct, but at least they are numerically
1425       stable
1426    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
1427    o added adjoint exch routined for all exch*3d* routines
1428      and updated flow directives
1429    
1430    checkpoint58o_post
1431    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
1432      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
1433    o change controling S/R for writing pickup file (new S/R do_write_pickup)
1434      and clean-up reading/writing of pickup files.
1435    o fix local version of read/write pickup (NH part) in rotating_tank/code
1436    o simplify EXCH interface:
1437     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
1438     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
1439    o added the regrid package
1440    o shelfice:
1441     - add a simple boundary layer scheme to reduce noise
1442     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
1443    
1444    checkpoint58n_post
1445    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
1446       local variable (not in common block).
1447    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
1448      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
1449      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
1450        to work with SingleCpuIO.
1451    o add "_d 0" to real constant of pkg/cfc subroutines ;
1452       update exp. cfc_exemple & tutorial_cfc_offline output files.
1453    o multi-threading and IO:
1454      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
1455        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
1456      - barrier before and after reading.
1457      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
1458      - avoid using MDS_WRITELOCAL for LAND pkg output.
1459      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
1460        common-block variables ; Allows multi-threading with master-thread IO.
1461    o change default MAX_NO_THREADS from 32 to 4 ;
1462      and stop cleanly when MAX_NO_THREADS is too small.
1463    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
1464    
1465    checkpoint58m_post
1466    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1467       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1468    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1469       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1470       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1471    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1472        add MITgcm_tutorials (= code + all the tutorials)
1473    o ecco, option to compute cost for total ssh (mean+anom)
1474    o consistent with addition of ptracer and ssh in pkg/profiles
1475  o profiles: adding ptracer and ssh  o profiles: adding ptracer and ssh
1476  o testreport: change multi-test output-file name  o testreport: change multi-test output-file name
1477    (from output.txt.{name} to output.{name}.txt)    (from output.txt.{name} to output.{name}.txt)
1478  o profiles: now ok for mutli-threaded case  o profiles: now ok for mutli-tiles case
1479  o seaice: add 4 parameters for different advection schemes for area,  o seaice: add 4 parameters for different advection schemes for area,
1480    (effective) seaice thickness, enthalphy, and snow height. Their default    (effective) seaice thickness, enthalphy, and snow height. Their default
1481    is the standard parameter SEAICEadvScheme    is the standard parameter SEAICEadvScheme
# Line 1191  o add two new packages Line 2659  o add two new packages
2659    - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme    - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2660    - these scheme operate in a similar manner as KPP (without ghat, of    - these scheme operate in a similar manner as KPP (without ghat, of
2661      course), however there is only one diffusivity that is used for both      course), however there is only one diffusivity that is used for both
2662      temperature and salinity (and passive tracers)ç      temperature and salinity (and passive tracers)
2663  o add offline package  o add offline package
2664  o add "verification/dic_example" which contains a dic-gchem-ptracer setup  o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2665    provided by Stephanie Dutkiewicz    provided by Stephanie Dutkiewicz

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