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revision 1.513 by jmc, Wed Jul 13 00:50:58 2005 UTC revision 1.1146 by jmc, Wed Aug 5 14:54:40 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 add missing "_d 0" in ShortWave flux penetration (S/R SWFRAC):
8       update results of experiments: lab_sea (4 fwd tests + 3 adjoint),
9        seaice_obcs, global_ocean.cs32x15 (icedyn & thsice) and natl_box (x2).
10    o few changes to pass when compiling with strick checking of arguments
11       across S/R (allow to find few bugs in S/R calls).
12    o pkg/seaice:
13     - seaice_evp: move if-statement out of loop (TEM) at the cost of 11 new
14       2d-fields, for slightly better performance
15    
16    checkpoint61t
17    o pkg/seaice:
18     - remove unused variables in seaice_evp
19     - reduce number of SQRT in seaice_evp and seaice_calc_viscosities
20    o eeset_parms.F, open_copy_data_file.F & ini_parms.F:
21       named file replacing SCRATCH files (for TARGET_BGL & TARGET_CRAYXT):
22       each processor opens a different file (a fix from Matt).
23    o cg2d:
24       use simple EXCH (overlap size = 1 and ignore corners), like in cg3d.F :
25       this reduces number of EXCH calls by 2 when using exch2.
26       For now, keep previous size array for gc2d_nsa.F to avoid Pb with store
27       directives and missing simple EXCH (exch_s3d_rx) adjoint code.
28    o pkg/thsice:
29       add code for Near Infra-Red albedo (from Jeff)
30       (turned on with run-time flag: thSIce_calc_albNIR, in data.ice).
31    o ini_model_io:
32       move (from packages_readparms.F & initialise_fixed.F) to ini_model_io.F
33       MNC & MONITOR initialisation calls; move MNC calls from {pkg}_readparms.F
34       to {pkg}_init_fixed.F for {pkg}= kpp, seaice & shelfice.
35    
36    checkpoint61s
37    o pkg/exch2 (exch2_rxN_cube*):
38       remove last BARRIER (no need to synchronise after getting data from shared
39       buffer (get) as long as any change to buffer (put,recv) is between BARRIER)
40    o change tiling of natl_box (from 2 to 4 tiles) to get it tested with MPI+MTH
41      and generate new output (for the 2 tests) using default rotationPeriod.
42    o pkg/exch2:
43      - always call exch2_*_cube, not exch-1 anymore, if useCubedSphereExchange=F
44        (was already the case with AUTODIFF_EXCH2 defined)
45      - add bj in exch2 arrays and S/R.
46      - can now use pkg/exch2 for regular (non CS) set-up; switch test experiment
47        MLAdjust to exch2 (identical results except with MPI -> truncation diff);
48    o add pkg/longstep for ptracer timestep a multiple of U/V/T/S timestep
49      - adds deltaT argument to the subroutines TIMESTEP_TRACER DWNSLP_APPLY
50        GAD_ADVECTION GAD_CALC_RHS GAD_IMPLICIT_R GAD_SOM_ADVECT
51      - verification experiment natl_box.longstep
52    o build_options: ifort+mpi_aces optfile (following Constantinos advise):
53      allow different versions of ifort (8 or 9) and different versions
54       of mpi (mpich or mpich2) to be used with the same optfile.
55      requires to load a netcdf module and set MPI_INC_DIR (see comments inside
56       optfile). Change testing scripts (example_scripts/ACESgrid) accordingly.
57    o pkg/seaice:
58      fix previous modif (3-level field removed) for old-pickup reading
59    
60    checkpoint61r
61    o pkg/seaice:
62     - clean up the 3-time levels of UICE,VICE,HEFF,AREA in three steps:
63      1. introduce fields for time step (N-1)
64      2. do not use levels 2 and 3 anymore (but keep them)
65      3. replace 3D versions of UICE,VICE,HEFF,AREA by 2D versions. This
66         includes changes to pkg/thsice/thsice_get_velocity.F,
67         model/src/external_forcing_surf.F, pkg/obcs/obcs_apply_seaice.F, and
68         pkg/obcs/obcs_apply_uvice.F.
69     - completely remove code for leap-frog time stepping for second order
70       advection
71     - adjusted adjoint accordingly;
72       gradient checks have improved by an order of magnitude!
73    
74    checkpoint61q
75    o pkg/seaice: fix bug in free slip boundary conditons for LSOR solver
76     - the boundary conditions along open boundaries are unclear, because the
77       associated masks are set to zero and are thus treated as closed when
78       applying the slip-boundary conditions.
79     - move initialisation of grid variables from seaice_init_varia to _fixed
80    o adding doc/diags_changes.txt
81    o model/src:
82      do_the_model_io: rename few pkg S/R which are called from do_the_model_io,
83       to avoid "_diags" naming if no relation to pkg/diagnostics.
84      ini_theta,ini_salt: fix (at least compile the code) reading from NetCDF
85       file and only call PLOT_FIELD_XYZ if debugMode=T.
86      remove few PLOT_FIELD_XY calls outside initialisation.
87      remove few unnecessary BARRIER.
88    o pkg/salt_plume: add SaltPlumeSouthernOcean to allow disabling
89      of salt_plume package in Southern Ocean
90    o pkg/thsice:
91     - fix hOceMxL in overlap (needed for sea-ice advection);
92       update output of experiment global_ocean.cs32x15.icedyn.
93    o pkg/seaice:
94     - make the (placeholder-)tracer IceAge a little more meaningful
95      by avoiding ridging of age due to convergent ice flow
96     - add diagnostics for surface temperature, atmospheric and oceanic
97       heat flux, and atmospheric and oceanic ice growth
98    
99    checkpoint61p
100    o eesupp (global_max & global_sum):
101     - add one more element to buffer (start at index 0) for GL_MAX/SUM output;
102     - remove starting & endding barrier (no longer needed)
103    o pkg/mdsio, writelocal:
104       works also in multi-threaded when LOCBIN_IO_THREAD_SAFE is undefined
105       (remove the STOP): uses shared buffer IO to store data from all threads
106       and then let master-thread write nThreads tiles.
107    o pkg/mdsio (read/write field):
108     - tiled IO done in 1 piece (all levels at a time);
109     - new header file "MDSIO_BUFF_3D.h" with 3-D buffers.
110     - multi-threaded: allow to read/write local (non-shared) array
111       (was already working with singleCpuIO ; now works also without);
112       => no longer needs barrier call after reading a file (added inside
113       mds_read/write field).
114     - move barrier calls outside gather/scatter_2d to mds_read/write_field
115    o pkg/obcs/exf
116      - exf_getffieldrec.F: add a few ". _d 0" and
117                            add code to catch the case fldperiod = 0.  
118      - obcs_precribe_read.F: change if statements so that they match
119                              the variable type (_RL)
120      - add a separate exf_iprec_obcs to exf_set_obcs (by default equal to
121        exf_iprec) as part of namelist EXF_NML_01
122    o pkg/mdsio:
123      - read/write tiled (local) files: read/write 1-level tile chunk at a time
124        (instead of segment of length sNx); expected to speed up tiled IO.
125    o pkg/exch2:
126      - take buffer copy from/to array out of S/R exch2_send/recv into new
127        S/R exch2_put/get ; Exch of local variable now works with MPI+MTH
128        (tested by removing commom block statement in SOLVE_FOR_PRESSURE.h).
129      - ad version of send/recv no longer needed (but needs exch2_ad_put/ad_get)
130      - simplify argument list of S/R exch2_get_uv_bounds and exch2_get_scal_bounds
131        (which replaces exch2_get_recv_bounds & exch2_get_send_bounds) by
132        including Topology header file (and common blocks).
133      - implement EXCH_IGNORE_CORNERS in scalar exchange (rx1);
134        remove 2nd exch call in exch2_s3d_rx (no longer needed).
135      - document S/R arg. list (+ update some comments)
136    o pkg/seaice:
137      - added SEAICE_CLIM_AIR code, which permits modulation of surface air
138        temperature and humidity over sea ice based on climatological values.
139      - clean up computation of Hibler+Bryan (1987) stress coupling for the case
140        of LSR (this change is expected to change the results slightly because now
141        it uses slightly difference moduli from the second last LSR solution, but
142        that is more consistent with the stress computations; this part of the code
143        is not tested in the verification experiments)
144      - fix diagnostics for flux of ice in case of B-grid
145      - turn strain rates eij and press into global fields within global
146        common block in SEAICE.h for more straighforward diagnostics
147      - fix diagnostics for principal stress components, press, zeta, eta
148        to give something meaning full
149    o change tiling of global_ocean.cs32x15 (12 tiles, 32x16) and generate
150      new output (all 4 tests) using default rotationPeriod.
151    o pkg KPP:
152      - add flag (LimitHblStable) to avoid limiting BL depth under stable conditions
153      - fix vertical indices in RI_IWMIX (match between KPP grid from 0 to Nr+1
154        and normal grid from 1 to Nr)
155    o Fix computations of L4rdt in mom_calc_visc.F
156    o eesupp:
157      new S/R ALL_PROC_DIE (like EEDIE, without irrelevant threads err msg):
158      should be called before a "stop" if we know that all process are going
159      to stop; if one Proc does call this S/R, will hang in MPI_FINALISE.
160    
161    checkpoint61o
162    o pkg/exch2: change check_depths to issue just a warning (instead of error+stop)
163    o model/src/ini_curvilinear_grid.F:
164       compute angleSin/CosC when they are not read from a file
165    o pkg/seaice:
166       add pseudo time stepping for LSOR
167    o pkg/exch2:
168       temporary fix for exch2_s3d_rx; update results of exp. hs94.cs-32x32x5.impIGW
169    o pkg/seaice:
170       Adding separate sea ice albedo, drag coefficients, and HO in Southern
171       Ocean from those in Arctic Ocean.  See *_south in SEAICE_PARAMS.h
172    o SingleCpuIO:
173       fix bug put before chkp61n (May 11), when more than 2 MPI cpu are used.
174    o pkg/seaice:
175       put exchanged variable in (local) common block for MPI+Multi-Threads
176       to work (necessary with exch1, and for now with exch2 too).
177    o verification: to get more experiments tested with mpi, mth and mpi+mth,
178      change tiling of:
179       aim.5l_Equatorial_Channel, aim.5l_LatLon, dome, exp4, global_ocean.90x40x15,
180       hs94.cs-32x32x5, MLAdjust, offline_exf_seaice & tutorial_plume_on_slope
181      update output of exp:
182       exp4, global_ocean.90x40x15(+.dwslp), MLAdjust(all 5),
183       tutorial_plume_on_slope and hs94.cs-32x32x5 (use default rotationPeriod)
184      + ideal_2D_ocean: use default rotation period + test Global_Sum_SINGLECPU
185                       (note: output.txt generated on faulks using only 1 tile)
186    o eesupp & mdsio (SingleCpuIO):
187     - remove MISSING_TILE_IO (from MDSIO_OPTIONS.h), replaced by run-time
188       parameter "W2_useE2ioLayOut" (read from file "data.exch2").
189       Note: was not effective for globalFile & useSingleCpuIO=F; now fixed.
190     - move MDSIO_SCPU.h (pkg/mdsio) to EEBUFF_SCPU.h (eesupp/inc).
191     - fix GLOBAL_SUM_SINGLECPU when using Exch2; re-use same buffers and same
192       gather/scatter S/R as with SingleCpuIO (=> 1 less 2D global RL array).
193    o pkg/exch2:
194     - new code to set-up W2-Exch2 topology (replace matlab-topology-generator):
195       read parameter file "data.exch2" if it exists; otherwise try default regular
196       cube without blank-tile; new header file "W2_EXCH2_SIZE.h";
197     - update matlab-topology-generator (exch2_setup_cs6_print.m) to be compatible
198       with new code (not to be used, just as a backup solution).
199     - add examples (e.g., for lat-lon-cap_120) of parameter file "data.exch2"
200       in utils/exch2/input.
201    
202    checkpoint61n
203    o eesupp & mdsio (SingleCpuIO):
204      - move mapping to global io-buffer inside gather_2d/scater_2d: this save
205        memory (1 less 2D global RL array); skip 1 buffer copy; and only send/
206        receive real*4 array (instead of real*8) to read/write 32.bit files.
207        (new template for gather_2d/scater_2d, new set of S/R MDS_PASS_R4,8toRL,S
208         and remove new mapping S/R)
209    o pkg/mdsio: in preparation for topology-generator within pkg/exch2:
210      - Change declaration of SingleCpuIO buffer, reduced to only 1 dim.:
211        xyBuffer_size, which is set to W2_ioBufferSize from W2_EXCH2_PARAMS.h
212        when using exch2. Add S/R to map global io-buffer to global model array.
213      - uses exch2_global_Nx,y instead of exch2_domain_nxt,nyt.
214    
215    checkpoint61m
216    o write_utils : change WRITE_1D_R8 to WRITE_1D_RL
217      and add 3 other S/R for other types (R4,R8,RS).
218      Change calls to WRITE_0D/1D_R[4,8,S,L] to match the type of argument.
219    o eesupp/inc/CPP_EEMACROS.h (EXCH & GLOBAL_SUM/MAX macros):
220     - ensure suffix (_R4,_R8,_RS,_RL) correspondance between macro and S/R ;
221     - reduce number of macro definitions (keep only those which are used);
222       can always call directly the corrresponding S/R if needed.
223     - everywhere in the code: change macros (EXCH & GLOBAL_SUM/MAX) suffix
224       _R4/_R8 to _RS/_RL when applied to _RS/_RL variable.
225     Fixed wrong type of arg in:
226       atm2d/put_ocnvars.F cheapaml/cheapaml.F ocn_compon_interf/ocn_apply_import.F
227       ctrl/ctrl_map_ini_ecco.F seaice/seaice_do_diags.F seaice/seaice_model.F
228     To fix: global_sum of var in common block is wrong (multi-threaded) in:
229       dic/dic_atmos.F ebm/ebm_area_t.F ebm/ebm_zonalmean.F sbo/sbo_calc.F
230     To fix: aim_v23/aim_do_co2.F (BARRIER & GLOBAL_SUM within bi,bj loops)
231    o adjustment.cs-32x32x1: test "blank tiles" when compiling with mpi; 2nd
232      "nlfs" mpi test is going to stop when checking for unconnected tile egdes.
233    o eesupp/src: new S/R to stop everyone when 1 (or more) Proc. find an error
234    o pkg/exch2: new S/R EXCH2_CHECK_DEPTHS to check that unconnected tile
235      edges are closed (zero depth); might happen with "blank tiles";
236      for now, disabled if using OBCS.
237    o tools/gemake2: delete modifs from March 27-29 2009 (with option "-mpi":
238      link *_mpi files from "MODS" dir) to return to a strait-forward behavior.
239    o move read_write.F to write_utils.F ; new parameter (maxLengthPrt1D)
240      to reduce length of 1.D array print in STDOUT.
241    o adjustment.cs-32x32x1: changed to oceanic test with 1 continent
242      + use 48 tiles (16x8): this will allow to test "blank tiles".
243    o start to test MPI + multi-threaded (change testreport to skip tests
244      where number of tiles do not match).
245    o genmake2: add option "-omp" to turn on Open-MP ;
246      passed to testreport (if using -mth) ; merge few (*+mth) optfiles.
247    o pkg/exch2 (+ utils/exch2): ignore blank tiles (instead of removing them)
248      and keep the original tile numbering. Note: compatible with old
249      W2_EXCH2_TOPOLOGY.h & w2_e2setup.F topology files.
250    
251    checkpoint61l
252    o Overlaps had been forgotten in calculating ijk keys : fixed
253    o fix cyrus makedepend for gcc 4.4
254    o experiment fizhi-cs-aqualev20:
255      switching to new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE)
256      and generate new output. Note: new output is much closer to the old
257      one (v1.8) generated with pgf77 -O2 on Mar 14 2007 than it is from
258      the previous one (v1.9) generated with pgf77 -O0 on Jun 13 2007.
259    o pkg/fizhi:
260     - change to avoid indices going deliberately over array-bounds
261     - remove unnecessary MPI stuff
262     - perpetual spring equinox with "#define FIZHI_USE_FIXED_DAY"
263     - new version of S/R GETPWHERE available with #define TRY_NEW_GETPWHERE:
264       does not go over array-bounds and therefore returns reliable output.
265     - in fizhi_driver.F & fizhi_turb.F, fix "get_alarm" calls:
266       this S/R has 4 output arguments, which are used inside "get_alarm";
267       when it is called with the same variable "ndum" in place of several
268       output arguments, this produces weird side effect inside "get_alarm"
269      (e.g., datein=dates(n) is overwritten by timein=times(n) since both
270       datein & timein, resp. 2nd and 3rd arg., are pointed to the same "ndum"
271       address) and produces error.
272    o tools/gemake2: (March 27-29 2009)
273      with option "-mpi": link *_mpi files from "MODS" dir (this is what
274      testreport does).
275    o lab_sea experiment: change from 2x1 tiles to 2x2 tiles and regenerate output
276    o pkg/seaice: fix bug in new version of S/R SEAICE_LSR.F:
277       update lab_sea.lsr & lab_sea.salt_plume results
278    o pkg/seaice:
279      Major overhaul of the LSOR solver: change discretization from original
280      finite differences to finite volume. The old routine is still in the
281      file seaice_lsr.F and can be turned on with the CPP-flag
282      SEAICE_OLD_AND_BAD_DISCRETIZATION
283      Along with this change, the discretization of the strain rates is changed.
284      The same flag turns on the old discretization in seaice_calc_strainrates.F
285      All verification experiments with seaice are affected (except for
286      seaice_exf_offline); global_ocean.cs32x15/input.icedyn recovers the old
287      results by setting the above flag.
288      Further changes involve changes in defaults:
289      - ALLOW_FLOODING is defined and turned on by default
290      - SEAICEadvSnow = .true. is now the default
291      - SEAICEadvSalt = .true. is now the default
292      - SEAICEadvAge  = .true. is now the default
293      - SEAICE_clipVelocities  = .false. is now the default
294                                         (as per J. Zhang's recommendation)
295      - B-grid, and thus not tested: SEAICE_TEST_ICE_STRESS_1/EXPLICIT_SSH_SLOPE
296        is defined, SEAICE_TEST_ICE_STRESS_1 is renamed into SEAICE_BICE_STRESS
297      - seaice_growth: replace computation of UG by a simple copy from wspeed
298    
299    checkpoint61k
300    o pkg/seaice: a few bug fixes mostly concerning the metric terms:
301      seaice_lsr: fixed a few metric terms,
302                  affects lab_sea.lsr, lab_sea.salt_plume, seaice_obcs
303                  add more debugging diagnostics
304      seaice_evp: removed superfluous many metric terms of FV discretization
305                  of stress divergence
306                  affects lab_sea, lab_sea.hb87
307      seaice_ocean_stress: removed superfluous many metric terms of FV discretization
308                  of stress divergence for non-evp solver
309                  (this part is not tested anywhere)
310      seaice_calc_strainrates: fixed a bug in no-slip boundary conditions,
311                  they were effectively only half slip
312                  affects lab_sea.hb87
313      updated all relevant verification experiments (except lab_sea//output_adm.txt
314        which was left over, but fails at level 7 & 6)
315    
316    checkpoint61j
317    o pkg/seaice: turn a few hard wired parameters into run time parameters
318    o pkg/seaice/exf/monitor: turn netcdf coordinate variable T into model
319      time in seconds as promised by the usints in seaice_monitor and exf_monitor
320    o pkg/mnc: fix the coordinate variables for multi-tile curvi-linear grids
321      that are not cubed-sphere grids
322    o pkg/seaice: fix a bug for the rare case of SEAICE_VECTORIZE_LSR
323    o pkg/ctrl:
324      fix bug in ctrl_depth_ini.F (EXCH_XYZ was applied to 2-D field xx_r_low)
325    o non-hydrostatic (calc_gw.F):
326      fix viscA4 on CS-grid + fix diagnostics: Wm_Diss & Wm_Advec
327      update output of exp. global_ocean.cs32x15.viscA4
328    o remove backward compatibility for thetaMin,phiMin
329      (replaced by xgOrigin,ygOrigin on Jan 27, 2009)
330    o pkg/exf: fix a serious bug in exf_set_uv.F: do a rotation of the
331      interpolated wind field not only for curvilineargrid=.true., but also
332      for a rotated grid (rotateGrid=.true.)
333    o pkg/exf: add capability to bypass interpolation for runoff
334      by setting yet another CPP-flag
335    o eesupp/src, B-grid exchange:
336      add simple (6 tiles, non MPI) CS exch + standard interface S/R.
337    o autodiff
338      new CPP option ALLOW_TAMC_SINGLEPREC_COMLEV
339      allows to switch to single-prec common blocks;
340      corresponding switch occurs in tamc.h, integer isbyte
341      TAF store directivs "byte" and "kind" seem equivalent;
342      Most tamc.h have been updated correspondingly.
343    
344    checkpoint61i
345    o autodiff:
346      fix autodiff_sore/_restore indices for obcs
347      (spotted by I. Hoteit, M. Mazloff)
348    o pkg/autodiff, pkg/ctrl:
349      Add flag to reduce all tapelev I/O to single-prec.
350      In data.ctrl set
351        doSinglePrecTapelev = .TRUE.
352    o model/src/ini_curvilinear_grid.F, new grid-file format without EXCH2:
353      check in hack for SX8 compiler (for dxV, dyU); remove it afterwards.
354    o pkg/shelfice: fix bug with SHELFICEconserve flag, prepare for
355      real fresh water flux (not yet)
356    o pkg/mdsio & rw:
357     - add argument & option to S/R MDS_WRITEVEC_LOC (avoid Open/Close & write-meta)
358     - add simple interface S/R to MDS_WRITEVEC_LOC in pkg/rw: WRITE_GLVEC_RX.
359    o pkg/flt:
360     - replace FLT_INIT by 3-steps standard initialization S/R: readparms,
361       init_fixed & ini_varia.
362     - clean-up & simplify linear interpolation S/R:
363       move flt_bilinear.F -> flt_interp_linear.F ; add arg. myThid.
364     - fix some indices (mainly vertical index) ; add IMPLICIT NONE.
365     - more efficient I/O, using new options of MDS_WRITEVEC_LOC S/R.
366     - add vert. coordinate & horiz. indices to output files.
367     - change vertical position in initial condition, from index to depth [m].
368     - store horizontal (decimal) indices i,j in common block (instead of coord. x,y)
369       (easier to get to a curvilinear grid) ; delX,delY no longer used.
370    o pkg/ggl90: a few modifications:
371     - fix bottom boundary condition, and interpolation of KappaE
372       near top and bottom
373     - use same set of viscosity/diffusivity for TKE/momnetum/tracer
374     - add smoothing option as in Blanke and Delecluse (1993) (--> ALLOW_GGL90_SMOOTH)
375     - add a few options for mixing-length upper limit (--> mxlMaxFlag)  
376    o rename thetaMin,phiMin -> xgOrigin,ygOrigin
377      (maintain temporary backward compatibility, until next checkpoint)
378    
379    checkpoint61h
380    o pkg/diagnostics with "periodic averaging diagnostics":
381      fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
382    o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
383    o pkg/obcs: fix loop ranges for balancing code
384    o pkg/flt:
385     - improve criteria for finding which tile owns a float.
386     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
387    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
388      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
389      with ocean biogeo)
390    o pkg/flt:
391     - do some cleaning and fix the restart ;
392     - add output.txt in flt_example/results to get this pkg tested.
393    o genmake2: add an EXTENDED_SRC option and flag.
394       for now, cannot be turned on on command line (only through genmake_local)
395    o pkg/mdsio: read/write vector:
396     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
397     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
398       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
399     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
400      (drop to 4 digits matching for grad). But this test does not look very
401      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
402    
403    checkpoint61g
404    o pkg/flt:
405      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
406       + make OPTIONS file more standard.
407      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
408      - fix _BYTESWAPIO CPP-Flag
409      - standard reading of file-parameter "data.flt"
410      - fix argument list of S/R FLT_RESTART
411      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
412    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
413    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
414      a still unfixed compiler/optimization bug
415    
416    checkpoint61f
417    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
418      update results of global_ocean.cs32x15.icedyn test.
419    o move getcon.F from model/src to pkg/fizhi.
420    o pkg/exf: add parameter for extrapolation of temp up to the surface
421       and option to prevent negative evap (in bulk_largeyeager04 only).
422    o Prather Advection scheme: fix tracer conservation for divergent flow
423      (e.g., when using NonLin Free-Surface).
424    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
425    o gmredi (Visbeck-variable-K):
426     - add more parameters to Visbeck-variable-K.
427     - use a 5 points average for dSigmaR in Visbeck-K calculation
428       (more "homogenous": same stencil and same weights as in dSigmaH)
429     - update output of ideal_2D_oce experiment.
430    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
431      (#undef REAL4_IS_SLOW)
432     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
433       coordinate variable
434     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
435       (surface forcing fields), removes some of the functionality
436     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
437     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
438       probably not all: copy _RS surface flux fields to RL field before
439       calling DIAGNOSTICS_FILL
440     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
441       real*4 (CALL EXCH_*_RS) versions.
442     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
443       (generate new output).
444    
445    checkpoint61e
446    o gmredi (Visbeck-variable-K):
447      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
448      - change computation of Visbeck-K where Slope > Smax :        
449        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
450        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
451    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
452      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
453    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
454    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
455      does not become too large (to avoid precision problems in implicit-diffusion
456      solver); update ideal_2D_oce output.
457    o pkg ggl90:
458      - in ggl90_cal.F: compute only one set of visc/diff, used to
459        step forward TKE/T/S/momentum
460      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
461        have Prandlt =1)
462    o gmredi (fm07):
463      - add lower limit on Transition layer thickness + lower limit on 1/lambda
464      - allow to set few more params from data.gmredi
465    o pkg ggl90:
466          - add missing sqrt(2) factor in computation of mixing length
467            scale in ggl90_calc.F
468            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
469    
470    checkpoint61d
471    o adjoint modifs
472      - adapt to new field rhoInSitu
473      - allow to revert from StoreDynVars2D, StoreDynVars3D
474        to individual fields
475        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
476    o store 3-D (in-situ) density in commom block (DYNVARS.h)
477     - save 1 rho computation.
478     - no longer modify T & S inland when using down_slope pkg.
479    o gad_som : allow to switch to SOM advection for T & S without corresponding
480      pickup files (using new S/R: MDS_CHECK4FILE).
481    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
482      (for useSingleCpuIO to work in multi-threaded)
483    o pkg/shelfice:
484     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
485       with SHELFICEtopoFile in data.shelfice
486     - move code for reading ice shelf topography and modifying hFacC into separate
487       subroutines of the shelfice package
488     - separate initialisation of "fixed" and "variable" variables
489     - kTopC is not (yet) replaced by kSurfC, although this is possible
490    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
491    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
492      and rename:
493      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
494      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
495    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
496    
497    checkpoint61c
498    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
499      to add mass source/sink of fluid in the interior (3-D generalisation
500      of oceanic real-fresh water flux).
501    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
502    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
503    o new pkg: down_slope
504      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
505      - presently, modify T & S inland (dwnslp_calc_rho.F).
506        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
507      - implementation for ocean in P-coords not tested.
508      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
509    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
510      (to facilitate conversion of oceanic pkg to p-coordinate).
511    o change FIND_RHO to FIND_RHO_2D :
512      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
513    o new pkg: cheapaml
514    
515    checkpoint61b
516    o exch2:
517      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
518      - no longer depend on the order sequence (N,S,E,W).
519      - 3rd exchange no longer needed (tested with 24 tiles).
520      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
521      - exch_UV_A-grid readily available (but not yet tested).
522      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
523      (both are no longer needed) in exch_uv: no effect in forward run; but
524       get truncation error differences with adjoint exch.
525    o exch2:
526     - change index-bounds storage (moved from target to local tile,
527       more intuitive this way) ; rename/remove some variables.
528     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
529    
530    checkpoint61a
531    o exch2/matlab-topology-generator:
532      fix bug in index bounds for N-S internal exchange (hard to tell if this
533      had any effect on the solution).
534    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
535      is exceeded
536    o testreport: modify syntax of awk, so that it works also with
537      awk, and not only with nawk and gawk
538    
539    checkpoint61
540    o autodiff
541      Change default for TAF usage by removing argument '-nonew_arg'
542      This changes TAF subroutine argument list (ordering of active var.)
543      Omission of this flag leads to incompatibility w.r.t. TAMC
544      To restore TAMC-compatibility, need following modifs:
545      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
546      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
547      Tested TAF version is 1.9.22
548      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
549    
550    checkpoint60
551    --->>> This is the last checkpoint for which generating the adjoint
552    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
553    --->>> by default.
554    --->>> Future checkpoints will ommit this flag by default.
555    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
556    o pkg/grdchk: Add gradient check to etan0 perturbations.
557    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
558    o pkg/autodiff: more flexibility in zeroadj.
559      model/src: modifying do_oceanic_phys.F accordingly.
560    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
561    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
562      special setup of gmredi for which the adjoint is stable
563      enough for parameter optimization.
564    o bridging the gap between eddy stress and GM.
565      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
566          along with a change in CPP option (now ALLOW_EDDYPSI).
567      -> when using GM w/ GM_AdvForm:
568          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
569          is applied either in the tracer Eq. or in momentum Eq.
570          depending on data.gmredi (intro. GM_InMomAsStress).
571      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
572      The key modifications are in model/src/taueddy_external_forcing.F
573      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
574    
575    checkpoint59r
576    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
577      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
578      fix option to read coriolis(@ cell-corner) from files with CS-grid.
579    o pkg/mnc: add some attributes to standard 1D-coordinate variables
580    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
581      mass points, when using mnc for output
582      - add runtime parameter (missing_value, missing_value_int) to override
583        default (which is the value of getcon('UNDEF'))
584    o pkg/mnc: prepare mnc for the actual use of missing values with the
585      diagnostics package: small fix in mnc_cw_readwrite.template and more
586      initialisation of never used fields
587      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
588      versions
589    o pkg/thsice/thsice_ini_vars.F added default initial values so that
590      thermodynamics sea ice solver does not blow up when some initial fields
591      are missing.
592    o move from external_forcing_surf.F to ini_forcing.F
593      the p-coord. hack consisting in using pLoad to set phi0surf ;
594      update output of tutorial_global_oce_in_p (affected @ truncation level).
595    o Freshen up a bit hs94.1x64x5, notably:
596      remove rotationPeriod and tRef=5*0. (adjoint only), and add
597      exactConserv=.TRUE.
598    o pkg/generic_advdiff:
599      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
600      applies to files where Temperature & Salinity 2nd Order moments are used.
601    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
602      this uses a dynamically allocated internal state data structure
603      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
604      and requires a fortran 90 compiler
605    
606    checkpoint59q
607    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
608       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
609    o Refresh tutorial_global_oce_biogeo, notably:
610      - change bathymetry (put back seamounts in ACC, use hFacs)
611      - change EOS (POLY3 --> JMD95Z)
612      - use Bryan-Lewis vertical diffusivity
613      - use multidimensional advection
614      - remove old virtual virtual in dic pkg, now done through ptracer pkg
615      - change a couple of parameters in dic pkg
616    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
617    o pkg/obcs: change default to OBCSfixTopo = .true.,
618      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
619      - replace "debugMode" with "debugLevel .GE. debLevB"
620    o implementation of TAF directives for gchem,cfc,dic
621    o remove "exp5" (replaced by tutorial_deep_convection).
622    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
623      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
624      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
625      --> changes results in exp4, seaice_obcs
626    o tutorial_deep_convection :
627      update the set-up and increase resolution and domain size ; start
628      from pseudo initial conditions = output at t=120mn in order to see
629      something happening when running testreport.
630    o pkg/seaice: add os7mp as an advection scheme
631                  add check for advection schemes
632                  add a flag for restoring T and S underneath sea ice
633    o pkg/my82: add netcdf-support and diagnostics
634    o thsice pkg:
635      - Now hsMax limits snow height by turning it into ice following
636        flooding scheme (and now conserving energy)
637      - Slight rewriting of the formula in thsice_calc_thick.F
638      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
639      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
640    
641    checkpoint59p
642    o gchem / dic / cfc :
643      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
644      - add new parameter files: "data.dic" & "data.cfc" ;
645      - various re-arrangement in initialisation & header file ;
646      - fix tutorial_global_oce_biogeo for multi-threaded test.
647    o pkg/dic: test for "pickup_dic" file when restarting ;
648      if no pickup-file, can restart with a re-initialised pH (same as it did
649      before) providing pickupStrictlyMatch is set to False.
650    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
651      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
652    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
653      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
654    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
655     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
656       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
657    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
658       scheme to use for vorticty-term ;
659     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
660       (with default selectVortScheme, return to original discretisation)
661     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
662    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
663    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
664      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
665      also fix diagnostics VISCAHW & VISCA4W.
666    
667    checkpoint59o
668    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
669    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
670      move a few statemens out the main loop into separate loops
671    o pkg/shelfice:
672      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
673        (kg/m^2/s), does not break tests, because in verification/isomip,
674        rhoConstFresh=rhoConst (by accident)
675      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
676      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
677        new file model/src/seawater.F, so that they are available for all pkgs.
678      - convert potential temperature into in-situ temperature. This changes the
679        isomip tests => update tests
680    o add a flag writePickupAtEnd (default=true) to be able to suppress
681      writing a pickup at the last timestep
682    o tools/mpack-1.6 :
683      - disable automake (not working) and autoconf (not needed).
684      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
685        also cleaner with much less compilation warnings.
686    o pkg/profiles:
687      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
688      (for "less than 32 characters name" compiler requirement)
689    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
690      conditions that have a different sampling frequency than S/T/U/V obcs
691    o pkg/diagnostics (stats-diags):
692      - fix global Min/Max in case 1 processor get only empty tiles
693    o genmake2: replace (4 times)
694         make genmake_tc_1.o >> genmake_warnings 2>&1
695      with
696         COMM="$CC $CFLAGS -c genmake_tc_1.c"
697         echo $COMM >> genmake_warnings
698         $COMM >> genmake_warnings 2>&1
699      to make genmake2 always see the value of CC as specified in the optfile.
700    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
701      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
702      - modify verification advect_cs test to test SOM-advection on CS-grid.
703    o pkg/ctrl:
704      - Rewrite of ctrl_map_ini_ecco.F,
705        introducing a generic routine (ctrl_map_ini_gen.F).
706      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
707    
708    checkpoint59n
709    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
710      number in dedicate array "hdiag":
711      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
712        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
713      - many small changes (integer format) for large number of diagnostics
714      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
715        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
716    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
717      usingSphericalGrid, this allows to define the rotated grid coordinates
718      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
719      geographical coordinates according to the inverse of the rotation defined
720      by the Euler angles, so that Coriolis parameter and online-interpolation by
721      exf works with the geographical coordinates on XC/YC/XG/YG.
722      Naturally, this feature does not work with all packages, so some
723      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
724      profiles), because there the coordinates are assumed to be regular
725      spherical grid coordinates.
726    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
727      - introduce isopycnal diffusion coefficient control.
728    o tools/adjoint_options:
729      - additional control vector components.
730    o pkg/mnc: have mnc create marginally meaning full coordinate variables
731      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
732    o pkg/mypackage:
733      - add example of read/write pickup for state-var ;
734      - add entry points to the main code for state-vars diags & write-pickup.
735    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
736      transitions for useExfYearlyFields
737      - add new subroutine that determines the file to read from for
738        use*YearlyFields = .TRUE. and .FALSE.
739      - add a verification experiment to global_with_exf that tests
740        useExfYearlyFields with USE_EXF_INTERPOLATION defined
741    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
742      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
743      subroutines (which could be generated from a template, because they are
744      almost identical), for now they are included in obcs_prescribe_read.F for
745      simplicity
746    o pkg/exf:
747      - add a little more diagnostic to exf_interp_read (in analogy to
748        mds_read_field, can be turned off with debugLevel < debugLevA=1)
749      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
750        ugly but fast by unrolling short inner loops, inserting a unroll=8
751        directive in routine lagran, and splitting a loop and making do while the
752        outermost loop (the latter requires the intoduction of index arrays)
753    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
754    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
755      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
756    o verification/seaice_obcs: updated for restart test and latest options
757    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
758      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
759      for now this is only available for the C-grid code and also within
760      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
761    
762    checkpoint59m
763    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
764      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
765    o gad_som : fix flux output (& diagnostics) to have same units as other  
766      advection scheme fluxes (was previously multiplied by deltaT).  
767    o added verification/seaice_obcs both to test seaice open boundaries
768      and to provide an example matlab scrpt for generating them
769    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
770    o pkg/salt_plume: clean up salt_plume_frac.F to
771      remove redundancy in PlumeMethod 1 and 4
772    o pkg/kpp: added saltplume diagnostics
773    o pkg/obcs and pkg/seaice:
774      - do not set uice and vice to zero when OB*icefile are unspecified
775      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
776      - moved seaice tracer obcs after call to seaice_growth
777    o pkg/salt_plume: added various options for salt plume depth
778      criterion and for vertical distribution of the salt
779    
780    checkpoint59l
781    o pkg/ptracers: new version of ptracers pickup:
782      read meta file and write only fields which are needed to restart.
783      ( same logic as main pickup file ; also using pickupStrictlyMatch )
784    o pkg/seaice:
785      - add timescale for melting due to warm mixed layer as a means of
786        setting SEAICE_availHeatFrac more conveniently
787      - add a CPP-flag/runtime parameter check for flooding algorithm
788      - reformulated availHeat in seaice_growth.F to be independent of AREA
789    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
790      unit changes
791    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
792    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
793      SX vector computer.
794    o pkg/seaice:
795      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
796        seaice forcing fields can now be read only through pkg/exf
797      - removed some unused halos
798    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
799    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
800      or U/VICE from U/VWIND before computing U/VSTRESS
801    
802    checkpoint59k
803    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
804      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
805    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
806      all experiments pass when compile with un-initialised var. checking option.
807    o added pkg/salt_plume
808    o script to test restart (for now, in MITgcm_contrib/jmc_script)
809    o pkg/seaice: new read/write pickup version.
810      read meta file and write only fields which are needed to restart.
811      ( same logic as main pickup file ; also using pickupStrictlyMatch )
812    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
813    o lab_sea.hb87: modify the domain & update output.hb87.txt :
814      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
815      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
816      process. Fixed here by closing the domain at the Northern boundary.
817    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
818    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
819      a set of consecutive levels in/from a 3-D array.
820    o pkg/ptracers:
821      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
822      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
823    
824    checkpoint59j
825    o in pkgs: dic, obcs, offline, rbcs:
826      standard way to compute coeff. for time interpolation between 2 time reccords
827      which retains full precision (& make results less dependent on compiler).
828      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
829    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
830      packages instead of reading ice cover and wind speed separately
831    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
832     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
833      to allow to compile customized code before the update)
834    o cleaning-up:
835      - fix CPP instruction syntax in pkg/obcs
836      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
837        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
838      - fix some threads issue in IO parts.
839    o pkg/dic:
840      - add tons of "_d 0" (--> much better testreports !)
841       and then update outputs of tutorial_global_oce_biogeo
842    o pkg/mom_fluxform:
843      add a special version of momentum advection intended to conserve momentum
844      next to a bathymetry step or a coastline edge. (default = off = #undef)
845    o new read/write pickup version:
846      - for now, only implemented for main (mdsio) pickup file.
847      - write out only what is needed to restart; merge pickup_nh , pickup_ph
848        and main pickup together.
849      - read meta file; read only what is needed to restart; stop if a field
850        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
851        if it make sense (even if the restart is not perfect).
852      - if no meta file, assume that pickup to read corresponds exactly to
853        a pickup that would currently be written.
854      - read pickup written in the old format (until checkpoint59i) if it
855        recognizes an old meta file (no field-list).
856      - add a meta file in exp. which starts from a pickup: 2 cases:
857        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
858         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
859        b) a meta file describing the content of the associated pickup file
860         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
861    o pkg/mdsio & pkg/rw:
862      - new routine to read a meta file ; new set of routine to read
863        Multiple-fields file (with meta file).
864    o added open boundary conditions capability for seaice
865        HSNOW, HSALT, UICE, and VICE
866    
867    checkpoint59i
868    o adjoint:
869      * fix multiDimAdvection adjoint
870        (partial recomputation problem by TAF for fVerT(:,:,kDown)
871        and comlev1 size definition (maxpass vs. max. number of tracers)
872      * verification/global_ocean.90x45x15 adjoint now tests
873        NLFS and multiDimAdvection using DST3 (=30)
874      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
875    o pkg/kpp: add "_d 0" to real constant (if missing);
876      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
877      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
878    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
879      for internal parameters related to restart process (formerly from PARAMS.h)
880      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
881    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
882      as argument. (only atm2d & obcs write_pickup have not yet been updated)
883    o pkg/monitor:
884      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
885      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
886      - account for deep Atmosphere factor and density factor (anelastic)
887    o added open boundary conditions capability for seaice HEFF and AREA
888    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
889      thermodynamics
890      - requires a little reorganization, which affects the testreport results
891        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
892        so that now the conservative form is tested
893      - add a few comments
894    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
895    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
896    o add new diagnostics to seaice: advective, diffusive fluxes (only for
897      multidim-advection, for scheme 2 they are not filled) and transports,
898      thermodynamic growth rates
899    o change units of EmPmR (inside the code, + within coupling interface)
900      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
901      Affects results @ truncation level (cg2d match) and update output of
902       experiments: lab_sea(6), global_ocean.90x40x15(10),
903      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
904      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
905      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
906      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
907    
908    checkpoint59h
909    o pkg/exf:
910      - improve vectorization by moving if-statement out of loops in
911        exf_mapfields, exf_radiation
912      - exf_bulkformulae.F: introduce 2D fields and vectorize code
913    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
914    o testreport:
915      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
916        monitor & update offline_exf_seaice exp. output.
917      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
918    o pkg/seaice:
919      - bug fix in the evp solver: boundary conditions were affected be
920        masking of zMax/zMin (changes results)
921      - minor bug fix in boundary conditions in seaice_calc_strainrates
922        (changes results for no_slip)
923      - seaice_lsr.F: make interpolation of eta dependent on boundaries
924      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
925      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
926        stress formulation and no-slip boundary conditions
927    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
928      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
929    o pkg/seaice: a first HSALT time stepping equation has been checked in
930    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
931      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
932      without requiring DO-IF statements
933    o pkg/thsice:
934      use continuous power-law function for partition of energy between lateral
935      melting/freezing and thinning/thickening ; old code using step function
936      still available with #undef THSICE_FRACEN_POWERLAW
937      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
938    o testreport: change AD testing : check against results/output_adm.txt
939      using same scripts as for forward test.
940    
941    checkpoint59g
942    o adjoint testing: in preparation for changing testreport:
943      - output format: cost and grad written on separated lines
944      - ad output results in directory "results" (instead of "results_ad")
945    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
946    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
947    o pkg/ecco: allow user defined cost function contributions
948    o testreport:
949      Allow to choose (per experiment) the list of tested output variables
950       and the main variable (used to issue a pass/FAIL ) ;
951      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
952      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
953      Also modify printing of summary:
954       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
955       b) echo the list of tested variables in the individual summary.txt of
956          each experiment.
957    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
958      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
959      (but still depend on the tile decompostion of the domain).
960    o pkg/seaice: change a discretization detail to make the B-grid code
961      "more symmetric". This change is likely to remove all "ridges/leads" that
962      where quasi-aligned with the grid in B-grid solutions. It may also be
963      the solution to the stress coupling issues with the B-grid.
964    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
965      remove .cvsignore from input dir. (since testreport no longer run here).
966    o pkg/thsice:
967     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
968     - fix reshaping of sea-ice just after advection:
969       melt all the ice only if ice-volume is too small.
970     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
971       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
972     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
973    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
974      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
975    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
976      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
977      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
978      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
979      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
980      -> update output.txt
981    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
982     this affects truncation error: -> update output.txt of exp:
983      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
984      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
985    
986    checkpoint59f
987    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
988    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
989      a bounded range (in forward mode)
990    o pkg/ecco, ctrl, autodiff and mom_common:
991     internal parameter controls, completements of implementations
992    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
993    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
994      (not seem any difference in testing results).
995    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
996       at face corners.
997    o pkg/generic_advdiff:
998     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
999      loop range indices for computing vertical advection tendency
1000      and do the calculation in the interior only (no overlap) ;
1001      for now, only implemented for SOM advection (to save CPU time).
1002     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
1003    o exch2 adjoint
1004      First set of changes:
1005      - add exch2 hand-written adjoint templates
1006      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
1007        This will require cleanup in pkg/autodiff/*.F
1008        (changed routines currently kept separate in verif. code/)
1009      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
1010        that used to hide exch2 or cubed-sphere specific code
1011        (commented via 'cph-exch2')
1012    o pkg/seaice
1013      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
1014    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
1015       output of global_ocean.cs32x15.thsice .
1016    
1017    checkpoint59e
1018    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
1019      for B-grid vector (not yet tested) and C-grid vector (<- only used
1020      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
1021    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
1022      (#ifdef ALLOW_SALT_PLUME)
1023    o gather_2d/scatter_2d: removed halo regions
1024    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
1025      scheme and the corresponding test case (under front_relax dir). For now,
1026      only available with Skew-flux form and not yet tested in realistic set-up.
1027      adjoint: store directives updated, but gradient checks deteriorated,
1028      so maybe GM/Redi adjoint is now broken.
1029    o seaice adjoint
1030      * add AREA, HEFF, HSNOW as control variable
1031        (should not change lab_sea results)
1032      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
1033    o pkg/seaice:
1034      * added computation of saltFlux in seaice_growth;
1035        For time being, sea ice salinity is assumed constant
1036        contribution of snow flooding to freshening of sea ice is neglected.
1037        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
1038        defaults to 0.0 in order to maintain backward compatibility.
1039        Typical values for SEAICE_salinity are 4 to 10 g/kg.
1040      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
1041      * added SEAICE_availHeatFrac, which specifies fraction of surface level
1042        heat content used to melt or grow ice
1043      * commented out cap of HICE: it helps keep ice thinner
1044      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
1045      * applied OBCS T/S mask to HEFFM sea ice mask
1046    
1047    checkpoint59d
1048    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
1049     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
1050     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
1051    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
1052     and change default value of parameter "GM_Small_Number";
1053     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
1054       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
1055       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
1056    o pkg/ecco: cost function when applying pkg/smooth to controls
1057    o pkg/ctrl: add forcingPrecond run time parameter
1058    o pkg/seaice:
1059     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
1060     - fix bug in metric terms of u-equation in LSR solver (implicit part),
1061       changes verification/lab_sea
1062     - rearrange implicit part of u-equation in LSR solver to make it easier to
1063       read, understand, and debug. This causes changes at the truncation level.
1064     - fix (serious) bug in the boundary conditions (sign error in the implicit
1065       part) of the LSR solver. Changes all LSR results.
1066     - fixed problem with HSNOW initialization to avoid thick snow when AREA
1067       is initilized with small values - does not change lab_sea results.
1068     - added HsnowFile initialization capability
1069    o pkg/smooth: addition to model/src and pkg/ctrl so allow
1070     initialization of pkg/smooth and application to control vector
1071    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
1072    o dependencies: pkg/profiles requires pkg/cal
1073    o pkg/profiles:
1074     - added option ALLOW_PROFILES_GENERICGRID
1075         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
1076         that interpolation information (grid points and coefficients) is provided
1077         within the netcdf input files.
1078         -> sample matlab scripts can be found in MITgcm_contrib/gael
1079         that allow you to prepare netcdf input files.
1080     - also modified: cleaner include statements, cleaner error print statements,
1081       cleaner stops when error, and more tests of the netcdf input files consistency.
1082    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
1083    o pkg/seaice:
1084     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
1085       requires a new routine: seaice_diagnostics_fill.F
1086     - make sure that seaice does not move if not forced (pressure replacement
1087       method, Hibler and Ip, 1995), changes results
1088     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
1089     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
1090       It is turned off by default (=-1.), because it changes the results.
1091     - make it possible to read AREA from a file, too.
1092    
1093    checkpoint59c
1094    o add S/R and diagnostics for oceanic mixed-layer depth
1095    o move GMRedi call after all vertical mixing schemes (including KPP)
1096    o pkg/thsice:
1097     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
1098      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
1099    o pkg/obcs:
1100     - bug fix for balance code
1101    o pkg/seaice:
1102      - allow values of SEAICE_elasticParm > 1
1103      - add new parameter SEAICE_evpTauRelax as an alternative
1104        to SEAICE_elasticParm
1105      - make lsr boundary conditions free slip (by default), changes result
1106      - add code for no slip boundary conditions for lsr
1107      - set minimum of zeta to zero (and not 4e8) (changes results)
1108      - add a cap on AREA after advecting AREA if seaice_growth is not called
1109    o change calculation of Visbeck K:
1110      - no longer depend on tapering scheme; instead, compute slope (limited
1111        by GM_maxSlope). this is equivalent to what was comuted before with
1112        clipping or linear tappering.
1113      - fix vertical averaging (wrong by 1/2 level)
1114      - leave the old version (but will not be maintained) within
1115        #ifdef OLD_VISBECK_CALC / #endif
1116      - update output of exp. ideal_2D_oce
1117    o change error catch in calc_r_star to improve vectorization
1118    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
1119      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
1120    o adjoint:
1121      Re-organized adjoint checkpointing according to Matt Mazloff
1122      (but with modifs/completions/cleanups)
1123      Storing is now bundled into large arrays to optimized I/O
1124      (and second step in cleanup of the_main_loop)
1125    
1126    checkpoint59b
1127    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
1128      - export/import (between ocean & coupler) fields needed for ocean DIC.
1129    o pkg/seaice:
1130      - get rid of three more exchanges seaice_calc_viscosities (required
1131        different loop boundaries in seaice_lsr and seaice_ocean_stress)
1132      - bug fix in seaice_ocean_stress (update of lab_sea required)
1133      - reduce loop boundaries to necessary minimum also in seaice_evp
1134      - go back to the old way of computing deltaC/Z as the adjoint likes that
1135        better
1136    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
1137      passive tracer to an Age Tracer) + update output.txt
1138    o pkg/exf:
1139      - implement A-grid / C-grid selection for wind-stress input files.
1140      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
1141      for now, in exf_bulk_largeyeager04.F only :
1142      - change implementation for case where windspeed + 2. components wind-stress
1143        are read-in. AND use rhoConstFresh to convert evap.
1144    o pkg/seaice:
1145      - use correct EXCH_UV for wind-forcing (on A-grid).
1146      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
1147        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
1148    o pkg/exf:
1149      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
1150      EXF_INTERPOLATION:
1151      - merge global_with_exf/code version of exf_interp_read.F
1152        to the main code ;
1153      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
1154        reading the file ; Important: This options needs to be defined to recover
1155        previous code.
1156        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
1157      - no longer loose real*8 precision along the way when using exf_iprec=64.
1158    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
1159      - change discretisation of evp-solver in order to avoid another exchange
1160        (changes lab_sea) and clean up a little
1161      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
1162        help the adjoint (this also changes the results slightly)
1163      - add a few "_d 0" where they had been missing in seaice_evp.F
1164      - cleaning up: remove unused seaice_calc_rhs.F
1165    o pkg/exf: some cleaning-up:
1166      - change various "constants" into runtime parameters
1167      - cleaned-up Large&Yeager04 routine which should eventually
1168        replace exf_bulkformulae.F (changed names of S/R and CPP)
1169        and merged various ALLOW_ATM_WIND options
1170     only used with thsice pkg (in thsice_get_exf.F):
1171      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
1172        which are used when useStabilityFct_overIce=TRUE (= the default)
1173      - change default values of ice & snow emissivity and scale downward LW
1174        by ice & snow emissivity.
1175    o pkg/thsice:
1176     fix few little problems, in thsice_calc_thickn.F:
1177      - growth vertically (and not laterally) if iceFrac == iceMaskMax
1178      - melt only laterally if hIce < hThinIce (as the comments say)
1179      and in thsice_extend.F:
1180      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
1181      - start to form ice as soon as the minimum ice-volume is reachable.
1182     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
1183      and cpl_aim+ocn
1184    o pkg/kpp
1185     - move computation of surface related input fields to KPP into a new
1186       subroutine kpp_forcing_surf.F
1187     - remove wrong (within bi,bj loops) EXCH calls.
1188     - little cleaning (add argument myThid in last position, cvs header ...)
1189     - for now, fix conservation problem by exchanging KPPviscAz (may not
1190       be the best fix)
1191    o pkg/seaice
1192     - check for inconsistent evp parameter/cpp-flag combination
1193     - remove leftover errIO flat for obsolete name list error handling
1194    o OpenAD
1195     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
1196    
1197    checkpoint59a
1198    o pkg/seaice: some parameter clarifications and a little bit of clean up
1199    o pkg/thsice: rename run-time parameters:
1200       himin       -> hIceMin
1201       himin0      -> hThinIce
1202       hihig       -> hThickIce
1203       i0          -> i0swFrac
1204       transCoef   -> bMeltCoef
1205       frac_energy -> fracMelting
1206      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
1207       with default values (for now) that do not change the results.
1208      remove old version of thsice vars advection in pkg/seaice.
1209    o in FFIELDS.h:
1210      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
1211      - make pLoad & sIceLoad always available (but still only used if
1212         ATMOSPHERIC_LOADING is #define).
1213    o pkg/kpp: replaced _KPP_RL with _RL
1214    o bug fixes for vertical diffusivity computations when both KPP and
1215        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
1216        are no longer updating the vertical diffusivity array
1217        (passed as argument) but are (re-) setting those arrays.
1218    o pkg/seaice: fix bug in evp solver, while doing that
1219      - change (improve?) discretization of stress computations for both
1220        cgrid-lsr and evp solver
1221      - add a new routine to compute strain rates
1222      - the above changes lab_sea results
1223      - add no slip conditions for evp solver (off by default), lsr-version
1224        may follow
1225      - fix exchange for shear at Z-points (does not change lab_sea)
1226      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
1227        (to force the user to pick a time step since there is not "safe" way
1228        of choosing it)
1229      - add principal stress diagnostics
1230      - rearrange fields for evp a little to avoid having to call a: too many
1231        exchanges and b: exchanges for stress trensor components which we do
1232        not have.
1233      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
1234        of evp, complete rewrite for lsr case (latter is does not yet work
1235        in all cases)
1236    o pkg/kpp: add code to have mixing in shelf ice caverns
1237      - add myThid to all kpp routines (long overdue)
1238    
1239    checkpoint59
1240    o pkg/exf:
1241      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
1242        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
1243      - move exf header files from lower_case.h to UPPER_CASE.h ;
1244        add missing cvs Header & Name
1245      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
1246      - add namelist param. selectStressGridPosition, exf_monFreq
1247      - retire many _CLIM routines, and remove data.exf_clim
1248        + params moved to data.exf
1249        + climsst, climsss now handled by exf_set_gen, i.e.
1250          climss?period=0 refers to constant field,
1251          climss?period=-12 to monthly forcing
1252      - split up namelists in data.exf
1253    o pkg/seaice:
1254      - remove seaice_exch and seaice_exch_uv
1255      - remove superfluous exchange of theta
1256      - add myThid to seaice_budget_ocean/ice
1257      - add new interface for atmospheric wind forcing (C-grid only)
1258        + new routine
1259        + two new field (taux, tauy for stress over ice)
1260        + removed one global field (DAIRN) for C-grid case only
1261    o pkg/thsise
1262      - 2nd set of modifs for thsice adjoint in conjunction with exf
1263    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
1264    
1265    checkpoint58y_post
1266    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
1267      vertical diffusivity, similar to that in MOM4; turned on using
1268      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
1269      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
1270    o Added capability for 3D specification of background vertical diffusion
1271      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
1272      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
1273      "data" file that contains the 3D vertical diffusivity coefficients.
1274    o ice dynamics (pkg/seaice) with thsice thermodynamics:
1275      - add code within pkg thsice to advect & diffuse sea-ice fields
1276      similar to (and will replace) what has been added in  seaice_advdiff.F,
1277      but: - conserving Mass, Heat & Salt.
1278           - better when using non-linear advection scheme (not yet fully tested)
1279           - can also be used in atmospheric set-up (for now, only the diffusion).
1280    
1281    checkpoint58x_post
1282    o IO option for global-file compact format:
1283      - add options when generating topology (utils/exch2/matlab-topology-generator)
1284      - add I/O capability (pkg/mdsio).
1285      - adapt utils/matlab/rdmds.m to read this format.
1286      for now long-line format not yet supported by pkg/mdsio (& exch2).
1287    o shelfice: add a few diagnostics
1288    
1289    checkpoint58w_post
1290    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
1291      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
1292      (and replace horiVertRatio in NH code).
1293      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
1294                         and tutorial_plume_on_slope (sensitive to truncation)
1295    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
1296      directly to drive seaice model (C-grid only)
1297    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
1298     - reintroduce computation of wind from stress,
1299     - compute tau (in exf_bulkformulae.F) from windstress averaged to
1300       mass points to avoid tau = 0
1301     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
1302    o rdmnc.m: make it work with "global" files created with gluemnc
1303    o rdmnc.m : some improvements in dealing with singleton dimension
1304      (tested on all testreport mnc output files).
1305    o genmake2: disable pkg/profiles if netcdf test fails.
1306    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
1307    o move call to cal_readparms up to make calendar parameters/variable available
1308      to all packages
1309    
1310    checkpoint58v_post
1311    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
1312      useDynP_inEos_Zc tested.
1313    o pkg/exf: changes to properly interpolate/mask/scale initial fields
1314    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
1315      and portions thereof.  See read_cs.txt for description and examples.
1316    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
1317      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
1318      following the great-circle arc between those 2 points.
1319    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
1320      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
1321    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
1322     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
1323     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
1324     - still needs work (not working with some options ; efficiency to improve)
1325       and serious testing.
1326     - use this scheme for temperature & salinity in 2 advection test exp.:
1327       advect_xy & advect_xz, respectively.
1328    
1329    checkpoint58u_post
1330    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
1331    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
1332    o testreport: add option "-skipdir" to skip some test.
1333    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
1334      momentum calculation.
1335    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
1336    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
1337      remove checkpoint.F and the_correction_step.F (no longer used);
1338      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
1339    o add option (linFSConserveTr) to correct for tracer source/sink due to
1340      Linear Free surface
1341    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
1342    o pkg/thsice: fix reading mnc-pickups
1343    
1344    checkpoint58t_post
1345    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
1346    o pkg/mdsio:
1347     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
1348       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
1349       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
1350     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
1351     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
1352       either MDS_READ_FIELD or MDS_WRITE_FIELD )
1353     - new S/R (to replace MDSWRITEMETA), which allows to write more
1354       informations (variable names, time ...) to meta files.
1355     - modify rdmds.m to give back the meta file content.
1356    o pkg/diagnostics: change vertical interpolation to be safer, and more
1357       flexible (define p-levels to interpolate to in data.diagnostics);
1358      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
1359       diagnostic pointer.
1360    o pkg/seaice: more cleaning up of seaice_growth, added many comments
1361    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
1362    o fix multi-category seaice:
1363     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
1364       SEAICE_MULTICATEGORY
1365     - fix short wave heat flux
1366    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
1367       and allow to use EVP solver. Change forward lab_sea: test both EVP
1368       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
1369    o Initial check-in of lab_sea adjoint
1370      (very similar to natl_box_adjoint/code_seaice)
1371      * used C-grid and EVP solver
1372      * used KPP, GM/Redi
1373      * uses inAdExact=.TRUE.
1374      * gradient checks fail for both ADM and TLM
1375        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
1376        f.d. gradients actually seem more problematic than ADM, TLM gradients;
1377        issue is related to forward mismatch between g77 an ifort
1378    o pkg/seaice: overhaul of thermodynamics
1379     - growth.F and groatb.F are replaced by new routine seaice_growth.F
1380     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
1381     - move a few global fields out of SEAICE.h into seaice_growth.F and
1382       make them 2D (FICE/QNETO/ ...)
1383     - remove FO (it is the same as QNETO)
1384     - introduce a few local fields to avoid modifying external fields such
1385       as atemp, etc.
1386    
1387    checkpoint58s_post
1388    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
1389      changed exf_set_gen.F so that
1390        genperiod=0 means input file is one time-constant field and
1391        genperiod=-12 means input file contains 12 monthly means
1392    o CG2D: use pre-computed solver main-diagonal (stored in common block);
1393      this affects truncation error ; generate new output file for exp. which
1394      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
1395        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
1396        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
1397        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
1398        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
1399        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
1400    o start implementation of deep-atmosphere and anelastic formulation
1401    o verification: remove 2nd copy of input files and use script "prepare_run"
1402      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
1403    o mom_common/vecinv/fluxform: fix a few initialisation isssues
1404    o profiles: fix for multithreaded case
1405    
1406    o diagnostics: rename few diags:
1407      s/'PRESSURE'/'RCENTER '/g
1408      s/'TICE    '/'oceFreez'/g
1409      s/'TAUX    '/'oceTAUX '/g
1410      s/'TAUY    '/'oceTAUY '/g
1411      s/'SWFLUX  '/'oceQsw  '/g
1412      s/DIFx/DFxE/g
1413      s/DIFy/DFyE/g
1414      and add few ocean-forcing diagnostics:
1415      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
1416    o modifications to pkg/seaice/growth.F and budget.F, which change results of
1417      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
1418      as actual snow thickness.  It now refers everywhere to effective snow
1419      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
1420    
1421    checkpoint58r_post
1422    o modifications to pkg/seaice/growth.F, which change results of
1423      lab_sea experiment: fixes pertain to melting snow over open water, to
1424      masking EVAP under sea ice, and to using the correct AREA variable for
1425      computations of EVAP, PRECIP, HSNOW, and GHEFF
1426    o add ability to read bathy, salt, and theta using MNC (off by def)
1427    o add flooding algorithm and advection of HSNOW for pkg/seaice;
1428      both are turned off by default and do no change any results
1429    o seaice advection with pkg/thsice: a step toward the use of non-linear
1430      advection scheme, but #ifdef or commented out for now (requires more EXCH).
1431    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
1432      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
1433      in natl_box (affects results @ truncation level: update output.txt)
1434    o multi-threading and IO:
1435      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
1436      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
1437        (needed to work with SingleCpuIO): tested in all verif. exp.
1438    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
1439      affects the results (but none of the verification test uses this scheme).
1440    o Adding some pkg/diagnostics capability to pkg/seaice
1441      (will certainly be subject to changes)
1442    o ctrl: adding new control variables:
1443      lwflux, lwdown, evap, snowprecip, apressure, runoff
1444    
1445    checkpoint58q_post
1446    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
1447      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
1448      high_res_cube configuration by 4% on Columbia.
1449    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
1450      add (in global_with_exf/code) a version of EXF_INTERP_READ without
1451      dynamical allocation (seems to work in multi-threaded).
1452    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
1453      single CPU io) so that TAF does not have to see EESUPPORT.h
1454    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
1455    
1456    checkpoint58p_post
1457    o obcs: stop if obcs is used with useCDscheme = .true.
1458    o shelfice:
1459     - fix a sign error so that no slip at shelfice interface works
1460     - remove stop for combination non-hydrostatic code and shelfice. That does
1461       not mean, that the results are correct, but at least they are numerically
1462       stable
1463    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
1464    o added adjoint exch routined for all exch*3d* routines
1465      and updated flow directives
1466    
1467    checkpoint58o_post
1468    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
1469      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
1470    o change controling S/R for writing pickup file (new S/R do_write_pickup)
1471      and clean-up reading/writing of pickup files.
1472    o fix local version of read/write pickup (NH part) in rotating_tank/code
1473    o simplify EXCH interface:
1474     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
1475     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
1476    o added the regrid package
1477    o shelfice:
1478     - add a simple boundary layer scheme to reduce noise
1479     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
1480    
1481    checkpoint58n_post
1482    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
1483       local variable (not in common block).
1484    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
1485      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
1486      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
1487        to work with SingleCpuIO.
1488    o add "_d 0" to real constant of pkg/cfc subroutines ;
1489       update exp. cfc_exemple & tutorial_cfc_offline output files.
1490    o multi-threading and IO:
1491      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
1492        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
1493      - barrier before and after reading.
1494      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
1495      - avoid using MDS_WRITELOCAL for LAND pkg output.
1496      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
1497        common-block variables ; Allows multi-threading with master-thread IO.
1498    o change default MAX_NO_THREADS from 32 to 4 ;
1499      and stop cleanly when MAX_NO_THREADS is too small.
1500    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
1501    
1502    checkpoint58m_post
1503    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1504       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1505    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1506       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1507       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1508    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1509        add MITgcm_tutorials (= code + all the tutorials)
1510    o ecco, option to compute cost for total ssh (mean+anom)
1511    o consistent with addition of ptracer and ssh in pkg/profiles
1512    o profiles: adding ptracer and ssh
1513    o testreport: change multi-test output-file name
1514      (from output.txt.{name} to output.{name}.txt)
1515    o profiles: now ok for mutli-tiles case
1516    o seaice: add 4 parameters for different advection schemes for area,
1517      (effective) seaice thickness, enthalphy, and snow height. Their default
1518      is the standard parameter SEAICEadvScheme
1519    o calc_gw:
1520     - add cosFacU in zonal viscous flux (harmonic.visc.).
1521     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1522       of tutorial_plume_on_slope.
1523    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1524    o calc_gw: true flux-form, account for horizontal grid spacing.
1525      update rotating_tank results, but not plume_on_slope (affected at
1526      truncation level, 11 digits).
1527    
1528    checkpoint58l_post
1529    o calc_gw:
1530     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1531     - remove side-drag for now (need to fix it); update plume_on_slope results.
1532     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1533    o commit code to make SST/SSS weights spatially variable
1534      (based on either variable in-situ or variable initial T/S weights)
1535    o pkg/ecco:
1536      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1537        now based on horizontally varying weights wthetaLev, wsaltLev
1538      * cost_averagesflags now returns year indices in addition to day, month
1539      * sflux balance is performed on annual basis
1540        (sflxumm, sfluxmm2, bal_sfluxmm)
1541      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1542        including separate counting and multipliers
1543    o pkg/rbcs
1544      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1545    
1546    checkpoint58k_post
1547    o testreport:
1548     - always build in dir. "build" (if not there, mkdir build instead of building
1549       & running in input)
1550     - run in dir run (if it exists), in build otherwise.
1551     - call prepare_run (if input/prepare_run exists)
1552     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1553    o pkg/exf modifications to interpolation and rotation routines for more
1554       reasonable treatment of North Pole singularity: for tracers North Pole
1555       value is set to northernmost zonal-mean value, for zonal velocity it is
1556       set to zero, and for meridional velocity it is set to northernmost value.
1557    o pkg/exf/exf_check_range.F
1558     - add tile index to diagnostics and move stop statement to the very
1559       end of the routine.
1560    o pkg/diagnostics: (diagnostics_main_init.F)
1561      define title of isomorphic variables according to the current config.
1562    o pkg/thsice with pkg/seaice dynamics:
1563    - fix domain of computation (interior only, required for exf) and do exchanges
1564    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1565    o towards a standard way of dealing with multi-threading in MONITOR
1566      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1567    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1568       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1569    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1570    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1571    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1572       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1573    o tracer advection:
1574     - clean-up and simplify calc_common_factors.F
1575     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1576       advection subroutine (but still not used within DST advection S/R)
1577    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1578    
1579    checkpoint58j_post
1580    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1581      from file (collects calls previously in FORWARD_STEP)
1582    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1583    o adjoint store dir. adjusted accordingly
1584    o genmake2
1585      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1586    
1587    checkpoint58i_post
1588    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1589      on wind stress (SEAICEstressFactor defaults to 1.)
1590    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1591      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1592    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1593      on CS-grid: no longer loosing mass.
1594    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1595    o pkg/ggl90: fix sloppy output and fix a bug
1596    o pkg/seaice: added SEAICEuseEVPpickup parameter
1597      - Set to false in order to start EVP solver with
1598        non-EVP pickup files when using SEAICEuseEVP
1599      - fix sign error in diffusion in seaice_calc_rhs
1600    
1601    checkpoint58h_post
1602    * Modifications for bottom topography control
1603      o replace hFacC by _hFacC at various places
1604      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1605      o add non-self-adjoint cg2d_nsa
1606      o update autodiff support routines
1607      o re-initialise hfac after ctrl_depth_ini
1608      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1609    * Adding verification for 5x5 box (4-layer) bottom topography control
1610    
1611    checkpoint58g_post
1612    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1613       used for mean seasonal cycle, mean diurnal cycle); add an example
1614       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1615    o pkg/ggl90:
1616      - add parameter (minimum surface kinetic energy)
1617      - fix bug (avoiding division by zero)
1618    o couple pkg/thsice to pkg/seaice:
1619      - modify advection in seaice to accomodate new scalar fields to be advected
1620      - only muliDimAdection scheme work with seaice/thsice
1621      - mapping of thsice-variables to seaice-variables, back and forth
1622      - does not break the verification experiments, but does not give the
1623        desired results either
1624    o pkg/seaice
1625      - make (default) second order advection a bit less confusing?
1626    
1627    checkpoint58f_post
1628    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1629      to pkg/seaice):
1630      - new routines thsice_map_exf and thsice_get_exf provide the interface
1631      - add an additional formal parameter to thsice_solve4temp
1632    o pkg/exf:
1633      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1634      - correct Stefan-Boltzmann constant
1635      - new parameter for longwave surface emittance
1636      - separate some stuff from exf_bulkformulae into new routines  
1637        exf_radiation, exf_wind
1638      - add new parameters and constants: longwave emissivity for ocean, ice
1639        and snow, evaporation parameters over ice
1640      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1641        either wind from stress or stress from wind
1642    o pkg/thSIce:
1643    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1644    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1645       and THSICE_CALC_THICKN
1646    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1647    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1648      to make debugging easier.
1649    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1650    o pkg/bulk_force:
1651      - clean-up comments and parameters ;
1652      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1653    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1654      generate new output for test-experiment: aim.5l_cs.thSI
1655    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1656      testreport accordingly
1657    
1658    checkpoint58e_post
1659    o SEAICE_CGRID adjoint done
1660    o R_STAR adjoint implemented.
1661      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1662      * need to sort out init. of h0facc, etc.
1663    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1664      to be able to use it in pure forward.
1665    
1666    checkpoint58d_post
1667    o upgrade simple test-experiment to tutorial example:
1668     step.1: duplicate the experiment and (step.2) will remove the old copy.
1669      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1670      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1671      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1672      tutorial_global_oce_biogeo    <- copy of dic_example
1673      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1674      tutorial_plume_on_slope       <- copy of plume_on_slope
1675      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1676      tutorial_global_oce_optim     <- empty for now (David ?)
1677      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1678     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1679    o correct a sign problem in cost_scat.F
1680    o obcs and ptracers: fix boundary conditions for advections schemes
1681      with larger stencil
1682    o thsice adjoint: start
1683    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1684      completeness
1685    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1686      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1687    o ptracers adjoint:
1688      * avoid extensive recomputatations
1689      * fix missing re-init. of gptr (missed by TAF)
1690    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1691      me to turn off the excessive output to STDOUT that this package produces
1692    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1693      and add those terms in Vector-Invariant formulation.
1694    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1695      if the control period (xx_hfluxperiod etc) is 0
1696    o in profiles pkg, clean routines and fix details
1697    o in ecco pkg, reading ssh data:
1698      fix problem in case the model does not start at iter0=0
1699    o fix mnc-pickup/restart for ptracers
1700    o new package prifiles:
1701      code to compute profile-based cost by Gael Forget
1702      (modifs in ecco, ctrl, autodiff)
1703    o Benign bug fix in initialization (spotted by M. Mazloff) of
1704      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1705    
1706    checkpoint58c_post
1707    o adjoint: finish NLFS adjoint and provide reference output in
1708      verification/global_ocean.90x40x15/results_ad_nlfs
1709    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1710      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1711      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1712      with SEAICE_CGRID defined.
1713    o move calendarDumps from "data" to "data.cal" and clean-up the code
1714      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1715    o add useEXF & useCAL flags (for now, set in hard-coded way)
1716    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1717      (were missing in NH mode, and wrong in quasihydrostatic mode).
1718      waiting for Chris updated version of calc_gw to add those CALLs.
1719    o fix bug in quasihydrostatic S/R ;
1720      add a test for this option: global_ocean.90x40x15.qshyd
1721    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1722      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1723    o add on/off flag useOffLine for package OFFLINE
1724    o seaice:
1725      - modify advection so that it works also on the C-grid
1726      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1727        problem in multi-tile runs with C-grid
1728      - add flags for clipping ice velocities and/or masking solver forcing
1729      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1730        C-grid solver
1731      - added a few comments to seaice_diffusion.F
1732      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1733        are now exclusive)
1734      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1735        required re-ordering the code a little:
1736       + make DAIRN global variable (defined in SEAICE)
1737       + move computation of the viscosities eta and zeta into a new separate
1738         routine (because I need to recompute them in seaice_ocean_stress.F)
1739    
1740    checkpoint58b_post
1741    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1742      update output.txt of exp. aim.5l_cs.thSI
1743    o various mnc cleanups and improvements:
1744      + shrink lookup tables by factor of ~4
1745      + better error reporting when running out of lookup space
1746      + able to handle longer path/file names (up to 500 chars)
1747    o adjoint:
1748      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1749      - TBD: "hidden" mom_vecinv recomp. in dynamics
1750    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1751     (allow to differentiate between forcing components using new integer flags:
1752      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1753     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1754    o ecco
1755      - enable trend removal from SSH anomaly obs.
1756    o adjoint
1757      - a fix for PmEpR when #undef EXACT_CONSERV
1758      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1759      - try to fix "hidden" recomp. in forward_step for NLFS
1760        (NLFS seems broken sometimes after I checked it in)
1761    o seaice:
1762     - add c-grid version of the dynamic solver:
1763       + three new routines that are the c-grid substitute lsr, dynsolver
1764         and ostres
1765       + put a few fields that were local to dynsolver into global common
1766         blocks, so that I can move the computation of stresses etc into
1767         seaice_lsr (saves coding but may break the adjoint).
1768     - replace more hardwired parameters by runtime parameters
1769     - add ice masks that mask the rhs of the implicit solvers where there
1770       is no ice (commented out in seaice_dynsolver, because i am not sure
1771       if this works properly), eventually this should replace the clipping
1772       of ice velocities in seaice_dynsolver to +/-40cm/s.
1773    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1774      include it only where its needed
1775    o move balancing of fluxes before the call of external_forcing_surf
1776    o seaice:
1777      - correct units of turning angles (now they are really in degrees)
1778      - move computation of GWATX/Y out of main routine into dynsolver
1779      - initialize GWATX/Y in seaice_init
1780    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1781      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1782    o seaice: add runtime flags for turning angles (default to zero)
1783    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1784      and trend from exf forcing and ctrl control adjustments
1785    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1786      (since checkpoint57x_post)
1787    o change the default rotation period to 86164.s = the Earth rotation
1788    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1789      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1790    o seaice advection: add code for choosing between the default (2nd order
1791      central differences) and multiDim advection schemes provided by
1792      pkg/generic_advdiff
1793    o seaice:
1794      - removed all references to SEAICE_GRID.h fields from
1795        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1796        (cubed-sphere configuration will change a little)
1797      - grid computations in seaice_init are obsolete now.
1798      - cleaned up code a little so that is easier to read (hopefully).
1799      - added new (better?) discretizations of default advection and diffusion
1800        (turn on with SEAICEuseFluxForm)
1801      - replace 1 in 3d global fields by kSurface in growth.F
1802      
1803    checkpoint58a_post
1804    o seaice:
1805      - bug fix in advect.F
1806    o shelfice:
1807      - separate shelfice load anomaly from pload (breaks with time
1808        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1809        Its default is 0., but it may be computed more cleverly from (unknown)
1810        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1811        done offline. A good approximation of the pressure load anomaly is
1812        necessary to avoid large initial adjustment processes underneath
1813        deep-reaching shelfice.
1814      - small fix in ISOMIP shelfice_thermodynamics
1815      - add more sophisticated thermodynamics of Hellmer (1989), this is
1816        now the default
1817      - give a few constants more intuitive names
1818    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1819      if bulk formulae are used in long integration (especially EmPmR). Turn
1820      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1821      if balancePrintMean, the imbalance that is substracted is printed to
1822      STDOUT.
1823    o fix bug (typo) in obcs_apply_eta.F
1824    o add a new package shelfice which enables us to model the circulation
1825      underneath shelf-ice with draughts of hundreds of meters.
1826     - works
1827     - to do: + include improved thermodynamics
1828              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1829                instead of new field kTopC
1830              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1831                instead of new field R_shelfIce and new code in ini_depth.F
1832                and ini_mask_etc.F?
1833              + adjust vertical mixing schemes?
1834    o seaice pkg:
1835     - add a cpp-flag to include a simple formula for a salinity dependent
1836       freezing point of sea water at the surface
1837     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1838       meridional stresses are now different (and hopefully correct)
1839    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1840       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1841       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1842    o pkg/diagnostics: add options and parameters for regional-statistics
1843       diagnostics ; define regions by reading a region-mask from a file
1844       (might add other options later)
1845    o pkg/bulk_force:
1846     - add option and parameters to use AIM surface-flux formulae.
1847     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1848       others forcing fields (defined in PARM05, parameter file "data") are loaded
1849       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1850     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1851     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1852     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1853       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1854     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1855    
1856    checkpoint58
1857    o add "--embed-source" option to genmake2 which, when the supporting
1858      tools can be compiled (as determined by genmake2) will turn on the
1859      embed_files package which then embeds the entire MITgcm source code
1860      (*.[fFhc] + Makefile) used for the build within the executable
1861      - requested by CNH but off by default
1862      - adds a paltry <9MB to the mitgcmuv executable in most cases
1863      - only writes the output when useEMBEDSRC in eedata is true
1864    o clean up 3-dim. relaxation codes:
1865      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1866      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1867      * Thanks to Tom Haine for testing!
1868    
1869    checkpoint57z_post
1870    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1871      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1872    o fix the pickup behavior for obcs in combination with ptracers
1873    o fix a bug in ptracers_external_fields_load
1874    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1875      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1876    o transfered surface NH pressure to eta field (if exactConserv).
1877    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1878         and update lab_sea output.txt file.
1879    o completing 3-dim. relaxation code: additional term
1880         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1881      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1882      * At compile time, in "EXF_OPTIONS.h" set
1883          #define  ALLOW_CLIMTEMP_RELAXATION
1884          #define  ALLOW_CLIMSALT_RELAXATION
1885      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1886          tauThetaClimRelax3Dim = 15552000.0,
1887          tauSaltClimRelax3Dim  = 15552000.0,
1888      * 3 cases:
1889          1) Use a constant-in-time 3-dim. field
1890          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1891          3) Real-time relax. to time-evolving prescribed field
1892    o Adding Laplacian-type smoothness constraint on
1893      initial and boundary (forcing) controls (ic, bc)
1894      * enable at compile-time via
1895        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1896      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1897      * Absolute scale somewhat unclear so far
1898      * no area weighting was included since no other cost term does so far
1899    
1900    checkpoint57y_post
1901    First step for a NLFS adjoint
1902    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1903    o new init. routines for calc_r_star, calc_surf_dr
1904    o still need to deal with ini_masks_etc
1905    o testreport seemed happy
1906    checkpoint57y_pre
1907    
1908    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1909    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1910    o add new offset feature to offline pkg (plus minor cleanup)
1911    o cfc fixes for final year of integration
1912    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1913      be in GCHEM_OPTIONS).
1914    
1915    checkpoint57x_post
1916    o fix testreport Pb in multiple test experiment.
1917    o cleanup our namelist syntax in verification:
1918      - make it more F95 standards compliant (some work still needed)
1919      - allows the vast majority of our tests to work with gfortran
1920    o Non-Hydrostatic:
1921     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1922     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1923    o Allow to apply AB on T,S rather than on AB(gT,gS):
1924     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1925     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1926       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1927     - need a "clever" read_pickup to restart from the other AB formulation
1928    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1929    o remove some unused variables (reduces number of compiler warnings)
1930    o adjoint
1931      * Disable useVariableViscosity for adjoint for time being
1932        (there are a number of extensive recomputations)
1933      * Initialize certain variables needed for adjoint
1934    
1935    checkpoint57w_post
1936    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1937                 fix the singleCpuIO RS version of MDSWRITEFIELD
1938       and add a WARNING if using globalFiles=T with multi-processors.
1939    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1940      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1941    o tracer advection scheme:
1942      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1943       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1944       was not very convenient).
1945      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1946       (further tests needed for the implicit DST & Flux-Limiter schemes).
1947    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1948      and sRef for convenience, handy, when you want to initialize
1949      ptracers in a large domain with a constant non-zero value. Also,
1950      untangle ptracers_init.F a little.
1951    
1952    checkpoint57v_post
1953    o change dome exp. to use variable viscosity in side-drag terms.
1954    o remove all the files from the cfc_offline test since they are now
1955      incorporated into tutorial_cfc_offline which has been producing
1956      identical results for a few days of testing
1957    o add new parameter: sideDragFactor to enable half-slip-side BC
1958      and change side-drag S/R to use viscosity from mom_calc_visc
1959      (can switch back by setting sideDragFactor=0.); affects results at
1960      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1961       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1962    o vorticity & strain are now computed without masking, to account for
1963      no-slip-side BC in variable viscosity calculation ; mask is applied
1964      anyway later on, before computing advection/coriolis terms.
1965    o modify exp4 to test new obcs support for reading from external files
1966      and for passive tracers
1967    o fix behavior of ptracers_monitor when monitor output is written to a
1968      netcdf-file; still not independent of monitor.F (writes in the same
1969      file).
1970    o change default value of tRef (put a uniform, meaningful value for ocean
1971      & atmos) and initialize sRef (was missing, as Martin mentioned).
1972    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1973      to be proportional to enstrophy dissipation length.  Thus,
1974       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1975      This is now consistent with Smagorinsky and with the manual.
1976    
1977    checkpoint57u_post
1978    o OBCS and PTRACERS: add open boundary support for passive tracers
1979      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1980        OB-values from file; this is not different from the way theta and salinity
1981        are treated
1982      - however, Orlanski-radiation conditions are not supported, and the model
1983        will stop if you use pTracers and Orlanski at the same time.
1984      - beefed up the rountine obcs_external_fields_load: now only those open
1985        boundary values are overwritten with values from files for which there
1986        are really files, otherwise the OB-fields remain untouched. This makes
1987        it possible to use different OBs at different ends of the domain (as
1988        with EXF)
1989    o reduce number of exch calls in shap_filt (s2).
1990    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1991      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1992    
1993    checkpoint57t_post
1994    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1995    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1996      same truncation, independent of the face number: affects affects several
1997      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1998    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1999      note that biharmonic viscosity + no-slip was not tested in any experiment.
2000    o fix bug in non-linear free-surf side-drag ; generate new output for
2001      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
2002    o make mnc honor the writeBinaryPrec flag for most kinds of output
2003    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
2004    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
2005      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
2006    o add brackets in multi-terms sum to get same truncation, independent of
2007      the face number (manage to get exactly same value of gU,gV at the cs-edge)
2008      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
2009    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
2010      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
2011      a maximum grid-scale Reynolds number.  Also, changes all length calculations
2012      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
2013      Suggested values of viscosity parameters found in mom_calc_visc.
2014      Many new viscosity diagnostics available.
2015    
2016    checkpoint57s_post
2017    o Add clearing-house for viscosity calculations, mom_calc_visc and
2018      correct numerous bugs in LeithD and Smagorinsky discretizations.  
2019      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
2020      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
2021      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
2022      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
2023      The Strain-Tension form is now called with useStrainTensonVisc=.true.
2024      ViscAhStrain and viscAhTension are now retired.
2025    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
2026    o In response to JMC's bug report, genmake2 now ignores any soft-links
2027      that it finds in the *current* directory when searching for files.
2028      Soft-links found in any other source directories will still work as
2029      they did before.
2030    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
2031      a C routine to unlimit the stack size
2032    o mnc-ify pkg/aim snapshot vars
2033    o mnc-ify pkg/land as requested by Daniel
2034    o various changes to mnc including:
2035      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
2036      - output can now be grouped so that all files within a group
2037          change the ITER portion of their names in lock-step together
2038      - can now read ("global") PER-FACE (in addition to PER-TILE) files
2039          and works with both EXCH1 and EXCH2 (but needs more testing)
2040      - writing works for all verification test cases w/ g77 on Linux
2041    
2042    checkpoint57r_post
2043    o make MNC variable initialization happen earlier
2044    o add diagnostics for (almost) each term of the momentum Eq.
2045    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
2046    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
2047    o remove MINIMAL_TAVE_OUTPUT option ;
2048      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
2049    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
2050      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
2051    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
2052    o add time-dependent SST, SSS control
2053    o cost terms in ecco/ modularized (new cost_generic.F)
2054    o cost_averages routines are modularized (new cost_averagesgeneric.F)
2055    o new infrastructure for seaice model vs. obs misfits in seaice/
2056      * driver from the_main_loop.F is seaice_cost_driver.F
2057      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
2058      * gradient check in Exp. 6a of natl_box_adjoint/
2059    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
2060      (see README file)
2061    
2062    checkpoint57q_post
2063    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
2064    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
2065      - bug was reported by Jean-Michel and Ian Fenty
2066    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
2067      update exp. cpl_aim+ocn output.
2068    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
2069      Needed for high-res. runs with large global files
2070      to be able to limit tapelev size
2071    o Changed some tests for adjoint:
2072      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
2073      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
2074      * global_ocean.90x40x15/ back to default 3-level checkpointing
2075    o Modifications to enable scripted COMMON to MODULE conversion
2076      * verification/OpenAD/code/ has necessary scripts and description;
2077      * converts, compiles and runs successfully;
2078    
2079    checkpoint57p_post
2080    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
2081    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
2082      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
2083    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
2084    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
2085      (was already the case for dissipation with mom_vecinv,
2086       and also the case for grad.PhiHyd when staggered-timeStep)
2087      This will allow to put dissipation out-off the AB time-stepping.
2088     Unfortunately, affects truncation error. Update output of exp. that "fails"
2089      (cg2d matching number) and leave the others for later: front_relax(10),
2090      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
2091      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
2092    
2093    checkpoint57o_post
2094    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
2095      (2) its ready to be documented during the 20050801 DocFest
2096    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
2097      for ideal_2D_oce and lab_sea on linux_ia32_g77
2098    o set to #undef CTRL_SET_OLD_MAXCVARS_30
2099      in global1x1_tot/code_seaice_adj to access indices 32, 33
2100      (worth another tag)
2101    
2102    checkpoint57n_post
2103    o adding precip control xx_precip 32
2104    o adding swflux control xx_swflux 33
2105    o Replacing 10 forcing penalty cost routines by 1 generic.
2106    o Implementing partitioning in time-mean and variable adjustment
2107      for atmos. state.
2108    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
2109    o in natl_box_adjoint:
2110      * updated exp 1 to 10
2111        (but does not have time-mean vs. variable split results yet)
2112    o updated global1x1/*_seaice_adj/
2113      to incorporate latest changes
2114    o enable useSingleCpuIO for mdsio vector routines
2115      (applies in particular to tapelev I/O)
2116    o removed inefficient K-loop in all active_file*control*.F
2117    
2118    checkpoint57m_post
2119    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
2120      and advect_cs (use EXCH-2 and standard cs-32 grid files).
2121    o pkg/exch2: filling of face-corner halo regions is optional
2122      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
2123    
2124    checkpoint57l_post
2125     tag before updating tutorials (pre-release-2)
2126  o add cos & sin of grid-direction orientation angle (curvilinear grid only,  o add cos & sin of grid-direction orientation angle (curvilinear grid only,
2127     for output and interpolation of input fields onto model grid)     for output and interpolation of input fields onto model grid)
2128  o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).  o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
# Line 577  o add two new packages Line 2696  o add two new packages
2696    - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme    - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2697    - these scheme operate in a similar manner as KPP (without ghat, of    - these scheme operate in a similar manner as KPP (without ghat, of
2698      course), however there is only one diffusivity that is used for both      course), however there is only one diffusivity that is used for both
2699      temperature and salinity (and passive tracers)ç      temperature and salinity (and passive tracers)
2700  o add offline package  o add offline package
2701  o add "verification/dic_example" which contains a dic-gchem-ptracer setup  o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2702    provided by Stephanie Dutkiewicz    provided by Stephanie Dutkiewicz

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