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revision 1.569 by jmc, Wed Oct 12 02:13:40 2005 UTC revision 1.1133 by jmc, Fri Jun 26 16:19:12 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 build_options: ifort+mpi_aces optfile (following Constantinos advise):
8      allow different versions of ifort (8 or 9) and different versions
9       of mpi (mpich or mpich2) to be used with the same optfile.
10      requires to load a netcdf module and set MPI_INC_DIR (see comments inside
11       optfile). Change testing scripts (example_scripts/ACESgrid) accordingly.
12    
13    checkpoint61r
14    o pkg/seaice:
15     - clean up the 3-time levels of UICE,VICE,HEFF,AREA in three steps:
16      1. introduce fields for time step (N-1)
17      2. do not use levels 2 and 3 anymore (but keep them)
18      3. replace 3D versions of UICE,VICE,HEFF,AREA by 2D versions. This
19         includes changes to pkg/thsice/thsice_get_velocity.F,
20         model/src/external_forcing_surf.F, pkg/obcs/obcs_apply_seaice.F, and
21         pkg/obcs/obcs_apply_uvice.F.
22     - completely remove code for leap-frog time stepping for second order
23       advection
24     - adjusted adjoint accordingly;
25       gradient checks have improved by an order of magnitude!
26    
27    checkpoint61q
28    o pkg/seaice: fix bug in free slip boundary conditons for LSOR solver
29     - the boundary conditions along open boundaries are unclear, because the
30       associated masks are set to zero and are thus treated as closed when
31       applying the slip-boundary conditions.
32     - move initialisation of grid variables from seaice_init_varia to _fixed
33    o adding doc/diags_changes.txt
34    o model/src:
35      do_the_model_io: rename few pkg S/R which are called from do_the_model_io,
36       to avoid "_diags" naming if no relation to pkg/diagnostics.
37      ini_theta,ini_salt: fix (at least compile the code) reading from NetCDF
38       file and only call PLOT_FIELD_XYZ if debugMode=T.
39      remove few PLOT_FIELD_XY calls outside initialisation.
40      remove few unnecessary BARRIER.
41    o pkg/salt_plume: add SaltPlumeSouthernOcean to allow disabling
42      of salt_plume package in Southern Ocean
43    o pkg/thsice:
44     - fix hOceMxL in overlap (needed for sea-ice advection);
45       update output of experiment global_ocean.cs32x15.icedyn.
46    o pkg/seaice:
47     - make the (placeholder-)tracer IceAge a little more meaningful
48      by avoiding ridging of age due to convergent ice flow
49     - add diagnostics for surface temperature, atmospheric and oceanic
50       heat flux, and atmospheric and oceanic ice growth
51    
52    checkpoint61p
53    o eesupp (global_max & global_sum):
54     - add one more element to buffer (start at index 0) for GL_MAX/SUM output;
55     - remove starting & endding barrier (no longer needed)
56    o pkg/mdsio, writelocal:
57       works also in multi-threaded when LOCBIN_IO_THREAD_SAFE is undefined
58       (remove the STOP): uses shared buffer IO to store data from all threads
59       and then let master-thread write nThreads tiles.
60    o pkg/mdsio (read/write field):
61     - tiled IO done in 1 piece (all levels at a time);
62     - new header file "MDSIO_BUFF_3D.h" with 3-D buffers.
63     - multi-threaded: allow to read/write local (non-shared) array
64       (was already working with singleCpuIO ; now works also without);
65       => no longer needs barrier call after reading a file (added inside
66       mds_read/write field).
67     - move barrier calls outside gather/scatter_2d to mds_read/write_field
68    o pkg/obcs/exf
69      - exf_getffieldrec.F: add a few ". _d 0" and
70                            add code to catch the case fldperiod = 0.  
71      - obcs_precribe_read.F: change if statements so that they match
72                              the variable type (_RL)
73      - add a separate exf_iprec_obcs to exf_set_obcs (by default equal to
74        exf_iprec) as part of namelist EXF_NML_01
75    o pkg/mdsio:
76      - read/write tiled (local) files: read/write 1-level tile chunk at a time
77        (instead of segment of length sNx); expected to speed up tiled IO.
78    o pkg/exch2:
79      - take buffer copy from/to array out of S/R exch2_send/recv into new
80        S/R exch2_put/get ; Exch of local variable now works with MPI+MTH
81        (tested by removing commom block statement in SOLVE_FOR_PRESSURE.h).
82      - ad version of send/recv no longer needed (but needs exch2_ad_put/ad_get)
83      - simplify argument list of S/R exch2_get_uv_bounds and exch2_get_scal_bounds
84        (which replaces exch2_get_recv_bounds & exch2_get_send_bounds) by
85        including Topology header file (and common blocks).
86      - implement EXCH_IGNORE_CORNERS in scalar exchange (rx1);
87        remove 2nd exch call in exch2_s3d_rx (no longer needed).
88      - document S/R arg. list (+ update some comments)
89    o pkg/seaice:
90      - added SEAICE_CLIM_AIR code, which permits modulation of surface air
91        temperature and humidity over sea ice based on climatological values.
92      - clean up computation of Hibler+Bryan (1987) stress coupling for the case
93        of LSR (this change is expected to change the results slightly because now
94        it uses slightly difference moduli from the second last LSR solution, but
95        that is more consistent with the stress computations; this part of the code
96        is not tested in the verification experiments)
97      - fix diagnostics for flux of ice in case of B-grid
98      - turn strain rates eij and press into global fields within global
99        common block in SEAICE.h for more straighforward diagnostics
100      - fix diagnostics for principal stress components, press, zeta, eta
101        to give something meaning full
102    o change tiling of global_ocean.cs32x15 (12 tiles, 32x16) and generate
103      new output (all 4 tests) using default rotationPeriod.
104    o pkg KPP:
105      - add flag (LimitHblStable) to avoid limiting BL depth under stable conditions
106      - fix vertical indices in RI_IWMIX (match between KPP grid from 0 to Nr+1
107        and normal grid from 1 to Nr)
108    o Fix computations of L4rdt in mom_calc_visc.F
109    o eesupp:
110      new S/R ALL_PROC_DIE (like EEDIE, without irrelevant threads err msg):
111      should be called before a "stop" if we know that all process are going
112      to stop; if one Proc does call this S/R, will hang in MPI_FINALISE.
113    
114    checkpoint61o
115    o pkg/exch2: change check_depths to issue just a warning (instead of error+stop)
116    o model/src/ini_curvilinear_grid.F:
117       compute angleSin/CosC when they are not read from a file
118    o pkg/seaice:
119       add pseudo time stepping for LSOR
120    o pkg/exch2:
121       temporary fix for exch2_s3d_rx; update results of exp. hs94.cs-32x32x5.impIGW
122    o pkg/seaice:
123       Adding separate sea ice albedo, drag coefficients, and HO in Southern
124       Ocean from those in Arctic Ocean.  See *_south in SEAICE_PARAMS.h
125    o SingleCpuIO:
126       fix bug put before chkp61n (May 11), when more than 2 MPI cpu are used.
127    o pkg/seaice:
128       put exchanged variable in (local) common block for MPI+Multi-Threads
129       to work (necessary with exch1, and for now with exch2 too).
130    o verification: to get more experiments tested with mpi, mth and mpi+mth,
131      change tiling of:
132       aim.5l_Equatorial_Channel, aim.5l_LatLon, dome, exp4, global_ocean.90x40x15,
133       hs94.cs-32x32x5, MLAdjust, offline_exf_seaice & tutorial_plume_on_slope
134      update output of exp:
135       exp4, global_ocean.90x40x15(+.dwslp), MLAdjust(all 5),
136       tutorial_plume_on_slope and hs94.cs-32x32x5 (use default rotationPeriod)
137      + ideal_2D_ocean: use default rotation period + test Global_Sum_SINGLECPU
138                       (note: output.txt generated on faulks using only 1 tile)
139    o eesupp & mdsio (SingleCpuIO):
140     - remove MISSING_TILE_IO (from MDSIO_OPTIONS.h), replaced by run-time
141       parameter "W2_useE2ioLayOut" (read from file "data.exch2").
142       Note: was not effective for globalFile & useSingleCpuIO=F; now fixed.
143     - move MDSIO_SCPU.h (pkg/mdsio) to EEBUFF_SCPU.h (eesupp/inc).
144     - fix GLOBAL_SUM_SINGLECPU when using Exch2; re-use same buffers and same
145       gather/scatter S/R as with SingleCpuIO (=> 1 less 2D global RL array).
146    o pkg/exch2:
147     - new code to set-up W2-Exch2 topology (replace matlab-topology-generator):
148       read parameter file "data.exch2" if it exists; otherwise try default regular
149       cube without blank-tile; new header file "W2_EXCH2_SIZE.h";
150     - update matlab-topology-generator (exch2_setup_cs6_print.m) to be compatible
151       with new code (not to be used, just as a backup solution).
152     - add examples (e.g., for lat-lon-cap_120) of parameter file "data.exch2"
153       in utils/exch2/input.
154    
155    checkpoint61n
156    o eesupp & mdsio (SingleCpuIO):
157      - move mapping to global io-buffer inside gather_2d/scater_2d: this save
158        memory (1 less 2D global RL array); skip 1 buffer copy; and only send/
159        receive real*4 array (instead of real*8) to read/write 32.bit files.
160        (new template for gather_2d/scater_2d, new set of S/R MDS_PASS_R4,8toRL,S
161         and remove new mapping S/R)
162    o pkg/mdsio: in preparation for topology-generator within pkg/exch2:
163      - Change declaration of SingleCpuIO buffer, reduced to only 1 dim.:
164        xyBuffer_size, which is set to W2_ioBufferSize from W2_EXCH2_PARAMS.h
165        when using exch2. Add S/R to map global io-buffer to global model array.
166      - uses exch2_global_Nx,y instead of exch2_domain_nxt,nyt.
167    
168    checkpoint61m
169    o write_utils : change WRITE_1D_R8 to WRITE_1D_RL
170      and add 3 other S/R for other types (R4,R8,RS).
171      Change calls to WRITE_0D/1D_R[4,8,S,L] to match the type of argument.
172    o eesupp/inc/CPP_EEMACROS.h (EXCH & GLOBAL_SUM/MAX macros):
173     - ensure suffix (_R4,_R8,_RS,_RL) correspondance between macro and S/R ;
174     - reduce number of macro definitions (keep only those which are used);
175       can always call directly the corrresponding S/R if needed.
176     - everywhere in the code: change macros (EXCH & GLOBAL_SUM/MAX) suffix
177       _R4/_R8 to _RS/_RL when applied to _RS/_RL variable.
178     Fixed wrong type of arg in:
179       atm2d/put_ocnvars.F cheapaml/cheapaml.F ocn_compon_interf/ocn_apply_import.F
180       ctrl/ctrl_map_ini_ecco.F seaice/seaice_do_diags.F seaice/seaice_model.F
181     To fix: global_sum of var in common block is wrong (multi-threaded) in:
182       dic/dic_atmos.F ebm/ebm_area_t.F ebm/ebm_zonalmean.F sbo/sbo_calc.F
183     To fix: aim_v23/aim_do_co2.F (BARRIER & GLOBAL_SUM within bi,bj loops)
184    o adjustment.cs-32x32x1: test "blank tiles" when compiling with mpi; 2nd
185      "nlfs" mpi test is going to stop when checking for unconnected tile egdes.
186    o eesupp/src: new S/R to stop everyone when 1 (or more) Proc. find an error
187    o pkg/exch2: new S/R EXCH2_CHECK_DEPTHS to check that unconnected tile
188      edges are closed (zero depth); might happen with "blank tiles";
189      for now, disabled if using OBCS.
190    o tools/gemake2: delete modifs from March 27-29 2009 (with option "-mpi":
191      link *_mpi files from "MODS" dir) to return to a strait-forward behavior.
192    o move read_write.F to write_utils.F ; new parameter (maxLengthPrt1D)
193      to reduce length of 1.D array print in STDOUT.
194    o adjustment.cs-32x32x1: changed to oceanic test with 1 continent
195      + use 48 tiles (16x8): this will allow to test "blank tiles".
196    o start to test MPI + multi-threaded (change testreport to skip tests
197      where number of tiles do not match).
198    o genmake2: add option "-omp" to turn on Open-MP ;
199      passed to testreport (if using -mth) ; merge few (*+mth) optfiles.
200    o pkg/exch2 (+ utils/exch2): ignore blank tiles (instead of removing them)
201      and keep the original tile numbering. Note: compatible with old
202      W2_EXCH2_TOPOLOGY.h & w2_e2setup.F topology files.
203    
204    checkpoint61l
205    o Overlaps had been forgotten in calculating ijk keys : fixed
206    o fix cyrus makedepend for gcc 4.4
207    o experiment fizhi-cs-aqualev20:
208      switching to new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE)
209      and generate new output. Note: new output is much closer to the old
210      one (v1.8) generated with pgf77 -O2 on Mar 14 2007 than it is from
211      the previous one (v1.9) generated with pgf77 -O0 on Jun 13 2007.
212    o pkg/fizhi:
213     - change to avoid indices going deliberately over array-bounds
214     - remove unnecessary MPI stuff
215     - perpetual spring equinox with "#define FIZHI_USE_FIXED_DAY"
216     - new version of S/R GETPWHERE available with #define TRY_NEW_GETPWHERE:
217       does not go over array-bounds and therefore returns reliable output.
218     - in fizhi_driver.F & fizhi_turb.F, fix "get_alarm" calls:
219       this S/R has 4 output arguments, which are used inside "get_alarm";
220       when it is called with the same variable "ndum" in place of several
221       output arguments, this produces weird side effect inside "get_alarm"
222      (e.g., datein=dates(n) is overwritten by timein=times(n) since both
223       datein & timein, resp. 2nd and 3rd arg., are pointed to the same "ndum"
224       address) and produces error.
225    o tools/gemake2: (March 27-29 2009)
226      with option "-mpi": link *_mpi files from "MODS" dir (this is what
227      testreport does).
228    o lab_sea experiment: change from 2x1 tiles to 2x2 tiles and regenerate output
229    o pkg/seaice: fix bug in new version of S/R SEAICE_LSR.F:
230       update lab_sea.lsr & lab_sea.salt_plume results
231    o pkg/seaice:
232      Major overhaul of the LSOR solver: change discretization from original
233      finite differences to finite volume. The old routine is still in the
234      file seaice_lsr.F and can be turned on with the CPP-flag
235      SEAICE_OLD_AND_BAD_DISCRETIZATION
236      Along with this change, the discretization of the strain rates is changed.
237      The same flag turns on the old discretization in seaice_calc_strainrates.F
238      All verification experiments with seaice are affected (except for
239      seaice_exf_offline); global_ocean.cs32x15/input.icedyn recovers the old
240      results by setting the above flag.
241      Further changes involve changes in defaults:
242      - ALLOW_FLOODING is defined and turned on by default
243      - SEAICEadvSnow = .true. is now the default
244      - SEAICEadvSalt = .true. is now the default
245      - SEAICEadvAge  = .true. is now the default
246      - SEAICE_clipVelocities  = .false. is now the default
247                                         (as per J. Zhang's recommendation)
248      - B-grid, and thus not tested: SEAICE_TEST_ICE_STRESS_1/EXPLICIT_SSH_SLOPE
249        is defined, SEAICE_TEST_ICE_STRESS_1 is renamed into SEAICE_BICE_STRESS
250      - seaice_growth: replace computation of UG by a simple copy from wspeed
251    
252    checkpoint61k
253    o pkg/seaice: a few bug fixes mostly concerning the metric terms:
254      seaice_lsr: fixed a few metric terms,
255                  affects lab_sea.lsr, lab_sea.salt_plume, seaice_obcs
256                  add more debugging diagnostics
257      seaice_evp: removed superfluous many metric terms of FV discretization
258                  of stress divergence
259                  affects lab_sea, lab_sea.hb87
260      seaice_ocean_stress: removed superfluous many metric terms of FV discretization
261                  of stress divergence for non-evp solver
262                  (this part is not tested anywhere)
263      seaice_calc_strainrates: fixed a bug in no-slip boundary conditions,
264                  they were effectively only half slip
265                  affects lab_sea.hb87
266      updated all relevant verification experiments (except lab_sea//output_adm.txt
267        which was left over, but fails at level 7 & 6)
268    
269    checkpoint61j
270    o pkg/seaice: turn a few hard wired parameters into run time parameters
271    o pkg/seaice/exf/monitor: turn netcdf coordinate variable T into model
272      time in seconds as promised by the usints in seaice_monitor and exf_monitor
273    o pkg/mnc: fix the coordinate variables for multi-tile curvi-linear grids
274      that are not cubed-sphere grids
275    o pkg/seaice: fix a bug for the rare case of SEAICE_VECTORIZE_LSR
276    o pkg/ctrl:
277      fix bug in ctrl_depth_ini.F (EXCH_XYZ was applied to 2-D field xx_r_low)
278    o non-hydrostatic (calc_gw.F):
279      fix viscA4 on CS-grid + fix diagnostics: Wm_Diss & Wm_Advec
280      update output of exp. global_ocean.cs32x15.viscA4
281    o remove backward compatibility for thetaMin,phiMin
282      (replaced by xgOrigin,ygOrigin on Jan 27, 2009)
283    o pkg/exf: fix a serious bug in exf_set_uv.F: do a rotation of the
284      interpolated wind field not only for curvilineargrid=.true., but also
285      for a rotated grid (rotateGrid=.true.)
286    o pkg/exf: add capability to bypass interpolation for runoff
287      by setting yet another CPP-flag
288    o eesupp/src, B-grid exchange:
289      add simple (6 tiles, non MPI) CS exch + standard interface S/R.
290    o autodiff
291      new CPP option ALLOW_TAMC_SINGLEPREC_COMLEV
292      allows to switch to single-prec common blocks;
293      corresponding switch occurs in tamc.h, integer isbyte
294      TAF store directivs "byte" and "kind" seem equivalent;
295      Most tamc.h have been updated correspondingly.
296    
297    checkpoint61i
298    o autodiff:
299      fix autodiff_sore/_restore indices for obcs
300      (spotted by I. Hoteit, M. Mazloff)
301    o pkg/autodiff, pkg/ctrl:
302      Add flag to reduce all tapelev I/O to single-prec.
303      In data.ctrl set
304        doSinglePrecTapelev = .TRUE.
305    o model/src/ini_curvilinear_grid.F, new grid-file format without EXCH2:
306      check in hack for SX8 compiler (for dxV, dyU); remove it afterwards.
307    o pkg/shelfice: fix bug with SHELFICEconserve flag, prepare for
308      real fresh water flux (not yet)
309    o pkg/mdsio & rw:
310     - add argument & option to S/R MDS_WRITEVEC_LOC (avoid Open/Close & write-meta)
311     - add simple interface S/R to MDS_WRITEVEC_LOC in pkg/rw: WRITE_GLVEC_RX.
312    o pkg/flt:
313     - replace FLT_INIT by 3-steps standard initialization S/R: readparms,
314       init_fixed & ini_varia.
315     - clean-up & simplify linear interpolation S/R:
316       move flt_bilinear.F -> flt_interp_linear.F ; add arg. myThid.
317     - fix some indices (mainly vertical index) ; add IMPLICIT NONE.
318     - more efficient I/O, using new options of MDS_WRITEVEC_LOC S/R.
319     - add vert. coordinate & horiz. indices to output files.
320     - change vertical position in initial condition, from index to depth [m].
321     - store horizontal (decimal) indices i,j in common block (instead of coord. x,y)
322       (easier to get to a curvilinear grid) ; delX,delY no longer used.
323    o pkg/ggl90: a few modifications:
324     - fix bottom boundary condition, and interpolation of KappaE
325       near top and bottom
326     - use same set of viscosity/diffusivity for TKE/momnetum/tracer
327     - add smoothing option as in Blanke and Delecluse (1993) (--> ALLOW_GGL90_SMOOTH)
328     - add a few options for mixing-length upper limit (--> mxlMaxFlag)  
329    o rename thetaMin,phiMin -> xgOrigin,ygOrigin
330      (maintain temporary backward compatibility, until next checkpoint)
331    
332    checkpoint61h
333    o pkg/diagnostics with "periodic averaging diagnostics":
334      fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
335    o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
336    o pkg/obcs: fix loop ranges for balancing code
337    o pkg/flt:
338     - improve criteria for finding which tile owns a float.
339     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
340    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
341      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
342      with ocean biogeo)
343    o pkg/flt:
344     - do some cleaning and fix the restart ;
345     - add output.txt in flt_example/results to get this pkg tested.
346    o genmake2: add an EXTENDED_SRC option and flag.
347       for now, cannot be turned on on command line (only through genmake_local)
348    o pkg/mdsio: read/write vector:
349     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
350     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
351       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
352     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
353      (drop to 4 digits matching for grad). But this test does not look very
354      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
355    
356    checkpoint61g
357    o pkg/flt:
358      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
359       + make OPTIONS file more standard.
360      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
361      - fix _BYTESWAPIO CPP-Flag
362      - standard reading of file-parameter "data.flt"
363      - fix argument list of S/R FLT_RESTART
364      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
365    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
366    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
367      a still unfixed compiler/optimization bug
368    
369    checkpoint61f
370    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
371      update results of global_ocean.cs32x15.icedyn test.
372    o move getcon.F from model/src to pkg/fizhi.
373    o pkg/exf: add parameter for extrapolation of temp up to the surface
374       and option to prevent negative evap (in bulk_largeyeager04 only).
375    o Prather Advection scheme: fix tracer conservation for divergent flow
376      (e.g., when using NonLin Free-Surface).
377    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
378    o gmredi (Visbeck-variable-K):
379     - add more parameters to Visbeck-variable-K.
380     - use a 5 points average for dSigmaR in Visbeck-K calculation
381       (more "homogenous": same stencil and same weights as in dSigmaH)
382     - update output of ideal_2D_oce experiment.
383    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
384      (#undef REAL4_IS_SLOW)
385     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
386       coordinate variable
387     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
388       (surface forcing fields), removes some of the functionality
389     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
390     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
391       probably not all: copy _RS surface flux fields to RL field before
392       calling DIAGNOSTICS_FILL
393     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
394       real*4 (CALL EXCH_*_RS) versions.
395     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
396       (generate new output).
397    
398    checkpoint61e
399    o gmredi (Visbeck-variable-K):
400      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
401      - change computation of Visbeck-K where Slope > Smax :        
402        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
403        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
404    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
405      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
406    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
407    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
408      does not become too large (to avoid precision problems in implicit-diffusion
409      solver); update ideal_2D_oce output.
410    o pkg ggl90:
411      - in ggl90_cal.F: compute only one set of visc/diff, used to
412        step forward TKE/T/S/momentum
413      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
414        have Prandlt =1)
415    o gmredi (fm07):
416      - add lower limit on Transition layer thickness + lower limit on 1/lambda
417      - allow to set few more params from data.gmredi
418    o pkg ggl90:
419          - add missing sqrt(2) factor in computation of mixing length
420            scale in ggl90_calc.F
421            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
422    
423    checkpoint61d
424    o adjoint modifs
425      - adapt to new field rhoInSitu
426      - allow to revert from StoreDynVars2D, StoreDynVars3D
427        to individual fields
428        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
429    o store 3-D (in-situ) density in commom block (DYNVARS.h)
430     - save 1 rho computation.
431     - no longer modify T & S inland when using down_slope pkg.
432    o gad_som : allow to switch to SOM advection for T & S without corresponding
433      pickup files (using new S/R: MDS_CHECK4FILE).
434    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
435      (for useSingleCpuIO to work in multi-threaded)
436    o pkg/shelfice:
437     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
438       with SHELFICEtopoFile in data.shelfice
439     - move code for reading ice shelf topography and modifying hFacC into separate
440       subroutines of the shelfice package
441     - separate initialisation of "fixed" and "variable" variables
442     - kTopC is not (yet) replaced by kSurfC, although this is possible
443    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
444    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
445      and rename:
446      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
447      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
448    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
449    
450    checkpoint61c
451    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
452      to add mass source/sink of fluid in the interior (3-D generalisation
453      of oceanic real-fresh water flux).
454    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
455    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
456    o new pkg: down_slope
457      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
458      - presently, modify T & S inland (dwnslp_calc_rho.F).
459        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
460      - implementation for ocean in P-coords not tested.
461      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
462    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
463      (to facilitate conversion of oceanic pkg to p-coordinate).
464    o change FIND_RHO to FIND_RHO_2D :
465      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
466    o new pkg: cheapaml
467    
468    checkpoint61b
469    o exch2:
470      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
471      - no longer depend on the order sequence (N,S,E,W).
472      - 3rd exchange no longer needed (tested with 24 tiles).
473      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
474      - exch_UV_A-grid readily available (but not yet tested).
475      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
476      (both are no longer needed) in exch_uv: no effect in forward run; but
477       get truncation error differences with adjoint exch.
478    o exch2:
479     - change index-bounds storage (moved from target to local tile,
480       more intuitive this way) ; rename/remove some variables.
481     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
482    
483    checkpoint61a
484    o exch2/matlab-topology-generator:
485      fix bug in index bounds for N-S internal exchange (hard to tell if this
486      had any effect on the solution).
487    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
488      is exceeded
489    o testreport: modify syntax of awk, so that it works also with
490      awk, and not only with nawk and gawk
491    
492    checkpoint61
493    o autodiff
494      Change default for TAF usage by removing argument '-nonew_arg'
495      This changes TAF subroutine argument list (ordering of active var.)
496      Omission of this flag leads to incompatibility w.r.t. TAMC
497      To restore TAMC-compatibility, need following modifs:
498      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
499      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
500      Tested TAF version is 1.9.22
501      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
502    
503    checkpoint60
504    --->>> This is the last checkpoint for which generating the adjoint
505    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
506    --->>> by default.
507    --->>> Future checkpoints will ommit this flag by default.
508    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
509    o pkg/grdchk: Add gradient check to etan0 perturbations.
510    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
511    o pkg/autodiff: more flexibility in zeroadj.
512      model/src: modifying do_oceanic_phys.F accordingly.
513    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
514    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
515      special setup of gmredi for which the adjoint is stable
516      enough for parameter optimization.
517    o bridging the gap between eddy stress and GM.
518      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
519          along with a change in CPP option (now ALLOW_EDDYPSI).
520      -> when using GM w/ GM_AdvForm:
521          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
522          is applied either in the tracer Eq. or in momentum Eq.
523          depending on data.gmredi (intro. GM_InMomAsStress).
524      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
525      The key modifications are in model/src/taueddy_external_forcing.F
526      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
527    
528    checkpoint59r
529    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
530      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
531      fix option to read coriolis(@ cell-corner) from files with CS-grid.
532    o pkg/mnc: add some attributes to standard 1D-coordinate variables
533    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
534      mass points, when using mnc for output
535      - add runtime parameter (missing_value, missing_value_int) to override
536        default (which is the value of getcon('UNDEF'))
537    o pkg/mnc: prepare mnc for the actual use of missing values with the
538      diagnostics package: small fix in mnc_cw_readwrite.template and more
539      initialisation of never used fields
540      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
541      versions
542    o pkg/thsice/thsice_ini_vars.F added default initial values so that
543      thermodynamics sea ice solver does not blow up when some initial fields
544      are missing.
545    o move from external_forcing_surf.F to ini_forcing.F
546      the p-coord. hack consisting in using pLoad to set phi0surf ;
547      update output of tutorial_global_oce_in_p (affected @ truncation level).
548    o Freshen up a bit hs94.1x64x5, notably:
549      remove rotationPeriod and tRef=5*0. (adjoint only), and add
550      exactConserv=.TRUE.
551    o pkg/generic_advdiff:
552      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
553      applies to files where Temperature & Salinity 2nd Order moments are used.
554    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
555      this uses a dynamically allocated internal state data structure
556      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
557      and requires a fortran 90 compiler
558    
559    checkpoint59q
560    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
561       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
562    o Refresh tutorial_global_oce_biogeo, notably:
563      - change bathymetry (put back seamounts in ACC, use hFacs)
564      - change EOS (POLY3 --> JMD95Z)
565      - use Bryan-Lewis vertical diffusivity
566      - use multidimensional advection
567      - remove old virtual virtual in dic pkg, now done through ptracer pkg
568      - change a couple of parameters in dic pkg
569    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
570    o pkg/obcs: change default to OBCSfixTopo = .true.,
571      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
572      - replace "debugMode" with "debugLevel .GE. debLevB"
573    o implementation of TAF directives for gchem,cfc,dic
574    o remove "exp5" (replaced by tutorial_deep_convection).
575    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
576      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
577      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
578      --> changes results in exp4, seaice_obcs
579    o tutorial_deep_convection :
580      update the set-up and increase resolution and domain size ; start
581      from pseudo initial conditions = output at t=120mn in order to see
582      something happening when running testreport.
583    o pkg/seaice: add os7mp as an advection scheme
584                  add check for advection schemes
585                  add a flag for restoring T and S underneath sea ice
586    o pkg/my82: add netcdf-support and diagnostics
587    o thsice pkg:
588      - Now hsMax limits snow height by turning it into ice following
589        flooding scheme (and now conserving energy)
590      - Slight rewriting of the formula in thsice_calc_thick.F
591      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
592      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
593    
594    checkpoint59p
595    o gchem / dic / cfc :
596      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
597      - add new parameter files: "data.dic" & "data.cfc" ;
598      - various re-arrangement in initialisation & header file ;
599      - fix tutorial_global_oce_biogeo for multi-threaded test.
600    o pkg/dic: test for "pickup_dic" file when restarting ;
601      if no pickup-file, can restart with a re-initialised pH (same as it did
602      before) providing pickupStrictlyMatch is set to False.
603    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
604      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
605    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
606      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
607    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
608     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
609       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
610    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
611       scheme to use for vorticty-term ;
612     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
613       (with default selectVortScheme, return to original discretisation)
614     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
615    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
616    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
617      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
618      also fix diagnostics VISCAHW & VISCA4W.
619    
620    checkpoint59o
621    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
622    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
623      move a few statemens out the main loop into separate loops
624    o pkg/shelfice:
625      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
626        (kg/m^2/s), does not break tests, because in verification/isomip,
627        rhoConstFresh=rhoConst (by accident)
628      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
629      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
630        new file model/src/seawater.F, so that they are available for all pkgs.
631      - convert potential temperature into in-situ temperature. This changes the
632        isomip tests => update tests
633    o add a flag writePickupAtEnd (default=true) to be able to suppress
634      writing a pickup at the last timestep
635    o tools/mpack-1.6 :
636      - disable automake (not working) and autoconf (not needed).
637      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
638        also cleaner with much less compilation warnings.
639    o pkg/profiles:
640      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
641      (for "less than 32 characters name" compiler requirement)
642    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
643      conditions that have a different sampling frequency than S/T/U/V obcs
644    o pkg/diagnostics (stats-diags):
645      - fix global Min/Max in case 1 processor get only empty tiles
646    o genmake2: replace (4 times)
647         make genmake_tc_1.o >> genmake_warnings 2>&1
648      with
649         COMM="$CC $CFLAGS -c genmake_tc_1.c"
650         echo $COMM >> genmake_warnings
651         $COMM >> genmake_warnings 2>&1
652      to make genmake2 always see the value of CC as specified in the optfile.
653    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
654      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
655      - modify verification advect_cs test to test SOM-advection on CS-grid.
656    o pkg/ctrl:
657      - Rewrite of ctrl_map_ini_ecco.F,
658        introducing a generic routine (ctrl_map_ini_gen.F).
659      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
660    
661    checkpoint59n
662    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
663      number in dedicate array "hdiag":
664      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
665        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
666      - many small changes (integer format) for large number of diagnostics
667      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
668        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
669    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
670      usingSphericalGrid, this allows to define the rotated grid coordinates
671      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
672      geographical coordinates according to the inverse of the rotation defined
673      by the Euler angles, so that Coriolis parameter and online-interpolation by
674      exf works with the geographical coordinates on XC/YC/XG/YG.
675      Naturally, this feature does not work with all packages, so some
676      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
677      profiles), because there the coordinates are assumed to be regular
678      spherical grid coordinates.
679    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
680      - introduce isopycnal diffusion coefficient control.
681    o tools/adjoint_options:
682      - additional control vector components.
683    o pkg/mnc: have mnc create marginally meaning full coordinate variables
684      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
685    o pkg/mypackage:
686      - add example of read/write pickup for state-var ;
687      - add entry points to the main code for state-vars diags & write-pickup.
688    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
689      transitions for useExfYearlyFields
690      - add new subroutine that determines the file to read from for
691        use*YearlyFields = .TRUE. and .FALSE.
692      - add a verification experiment to global_with_exf that tests
693        useExfYearlyFields with USE_EXF_INTERPOLATION defined
694    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
695      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
696      subroutines (which could be generated from a template, because they are
697      almost identical), for now they are included in obcs_prescribe_read.F for
698      simplicity
699    o pkg/exf:
700      - add a little more diagnostic to exf_interp_read (in analogy to
701        mds_read_field, can be turned off with debugLevel < debugLevA=1)
702      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
703        ugly but fast by unrolling short inner loops, inserting a unroll=8
704        directive in routine lagran, and splitting a loop and making do while the
705        outermost loop (the latter requires the intoduction of index arrays)
706    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
707    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
708      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
709    o verification/seaice_obcs: updated for restart test and latest options
710    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
711      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
712      for now this is only available for the C-grid code and also within
713      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
714    
715    checkpoint59m
716    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
717      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
718    o gad_som : fix flux output (& diagnostics) to have same units as other  
719      advection scheme fluxes (was previously multiplied by deltaT).  
720    o added verification/seaice_obcs both to test seaice open boundaries
721      and to provide an example matlab scrpt for generating them
722    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
723    o pkg/salt_plume: clean up salt_plume_frac.F to
724      remove redundancy in PlumeMethod 1 and 4
725    o pkg/kpp: added saltplume diagnostics
726    o pkg/obcs and pkg/seaice:
727      - do not set uice and vice to zero when OB*icefile are unspecified
728      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
729      - moved seaice tracer obcs after call to seaice_growth
730    o pkg/salt_plume: added various options for salt plume depth
731      criterion and for vertical distribution of the salt
732    
733    checkpoint59l
734    o pkg/ptracers: new version of ptracers pickup:
735      read meta file and write only fields which are needed to restart.
736      ( same logic as main pickup file ; also using pickupStrictlyMatch )
737    o pkg/seaice:
738      - add timescale for melting due to warm mixed layer as a means of
739        setting SEAICE_availHeatFrac more conveniently
740      - add a CPP-flag/runtime parameter check for flooding algorithm
741      - reformulated availHeat in seaice_growth.F to be independent of AREA
742    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
743      unit changes
744    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
745    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
746      SX vector computer.
747    o pkg/seaice:
748      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
749        seaice forcing fields can now be read only through pkg/exf
750      - removed some unused halos
751    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
752    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
753      or U/VICE from U/VWIND before computing U/VSTRESS
754    
755    checkpoint59k
756    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
757      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
758    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
759      all experiments pass when compile with un-initialised var. checking option.
760    o added pkg/salt_plume
761    o script to test restart (for now, in MITgcm_contrib/jmc_script)
762    o pkg/seaice: new read/write pickup version.
763      read meta file and write only fields which are needed to restart.
764      ( same logic as main pickup file ; also using pickupStrictlyMatch )
765    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
766    o lab_sea.hb87: modify the domain & update output.hb87.txt :
767      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
768      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
769      process. Fixed here by closing the domain at the Northern boundary.
770    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
771    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
772      a set of consecutive levels in/from a 3-D array.
773    o pkg/ptracers:
774      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
775      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
776    
777    checkpoint59j
778    o in pkgs: dic, obcs, offline, rbcs:
779      standard way to compute coeff. for time interpolation between 2 time reccords
780      which retains full precision (& make results less dependent on compiler).
781      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
782    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
783      packages instead of reading ice cover and wind speed separately
784    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
785     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
786      to allow to compile customized code before the update)
787    o cleaning-up:
788      - fix CPP instruction syntax in pkg/obcs
789      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
790        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
791      - fix some threads issue in IO parts.
792    o pkg/dic:
793      - add tons of "_d 0" (--> much better testreports !)
794       and then update outputs of tutorial_global_oce_biogeo
795    o pkg/mom_fluxform:
796      add a special version of momentum advection intended to conserve momentum
797      next to a bathymetry step or a coastline edge. (default = off = #undef)
798    o new read/write pickup version:
799      - for now, only implemented for main (mdsio) pickup file.
800      - write out only what is needed to restart; merge pickup_nh , pickup_ph
801        and main pickup together.
802      - read meta file; read only what is needed to restart; stop if a field
803        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
804        if it make sense (even if the restart is not perfect).
805      - if no meta file, assume that pickup to read corresponds exactly to
806        a pickup that would currently be written.
807      - read pickup written in the old format (until checkpoint59i) if it
808        recognizes an old meta file (no field-list).
809      - add a meta file in exp. which starts from a pickup: 2 cases:
810        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
811         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
812        b) a meta file describing the content of the associated pickup file
813         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
814    o pkg/mdsio & pkg/rw:
815      - new routine to read a meta file ; new set of routine to read
816        Multiple-fields file (with meta file).
817    o added open boundary conditions capability for seaice
818        HSNOW, HSALT, UICE, and VICE
819    
820    checkpoint59i
821    o adjoint:
822      * fix multiDimAdvection adjoint
823        (partial recomputation problem by TAF for fVerT(:,:,kDown)
824        and comlev1 size definition (maxpass vs. max. number of tracers)
825      * verification/global_ocean.90x45x15 adjoint now tests
826        NLFS and multiDimAdvection using DST3 (=30)
827      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
828    o pkg/kpp: add "_d 0" to real constant (if missing);
829      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
830      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
831    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
832      for internal parameters related to restart process (formerly from PARAMS.h)
833      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
834    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
835      as argument. (only atm2d & obcs write_pickup have not yet been updated)
836    o pkg/monitor:
837      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
838      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
839      - account for deep Atmosphere factor and density factor (anelastic)
840    o added open boundary conditions capability for seaice HEFF and AREA
841    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
842      thermodynamics
843      - requires a little reorganization, which affects the testreport results
844        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
845        so that now the conservative form is tested
846      - add a few comments
847    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
848    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
849    o add new diagnostics to seaice: advective, diffusive fluxes (only for
850      multidim-advection, for scheme 2 they are not filled) and transports,
851      thermodynamic growth rates
852    o change units of EmPmR (inside the code, + within coupling interface)
853      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
854      Affects results @ truncation level (cg2d match) and update output of
855       experiments: lab_sea(6), global_ocean.90x40x15(10),
856      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
857      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
858      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
859      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
860    
861    checkpoint59h
862    o pkg/exf:
863      - improve vectorization by moving if-statement out of loops in
864        exf_mapfields, exf_radiation
865      - exf_bulkformulae.F: introduce 2D fields and vectorize code
866    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
867    o testreport:
868      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
869        monitor & update offline_exf_seaice exp. output.
870      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
871    o pkg/seaice:
872      - bug fix in the evp solver: boundary conditions were affected be
873        masking of zMax/zMin (changes results)
874      - minor bug fix in boundary conditions in seaice_calc_strainrates
875        (changes results for no_slip)
876      - seaice_lsr.F: make interpolation of eta dependent on boundaries
877      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
878      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
879        stress formulation and no-slip boundary conditions
880    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
881      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
882    o pkg/seaice: a first HSALT time stepping equation has been checked in
883    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
884      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
885      without requiring DO-IF statements
886    o pkg/thsice:
887      use continuous power-law function for partition of energy between lateral
888      melting/freezing and thinning/thickening ; old code using step function
889      still available with #undef THSICE_FRACEN_POWERLAW
890      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
891    o testreport: change AD testing : check against results/output_adm.txt
892      using same scripts as for forward test.
893    
894    checkpoint59g
895    o adjoint testing: in preparation for changing testreport:
896      - output format: cost and grad written on separated lines
897      - ad output results in directory "results" (instead of "results_ad")
898    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
899    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
900    o pkg/ecco: allow user defined cost function contributions
901    o testreport:
902      Allow to choose (per experiment) the list of tested output variables
903       and the main variable (used to issue a pass/FAIL ) ;
904      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
905      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
906      Also modify printing of summary:
907       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
908       b) echo the list of tested variables in the individual summary.txt of
909          each experiment.
910    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
911      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
912      (but still depend on the tile decompostion of the domain).
913    o pkg/seaice: change a discretization detail to make the B-grid code
914      "more symmetric". This change is likely to remove all "ridges/leads" that
915      where quasi-aligned with the grid in B-grid solutions. It may also be
916      the solution to the stress coupling issues with the B-grid.
917    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
918      remove .cvsignore from input dir. (since testreport no longer run here).
919    o pkg/thsice:
920     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
921     - fix reshaping of sea-ice just after advection:
922       melt all the ice only if ice-volume is too small.
923     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
924       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
925     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
926    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
927      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
928    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
929      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
930      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
931      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
932      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
933      -> update output.txt
934    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
935     this affects truncation error: -> update output.txt of exp:
936      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
937      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
938    
939    checkpoint59f
940    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
941    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
942      a bounded range (in forward mode)
943    o pkg/ecco, ctrl, autodiff and mom_common:
944     internal parameter controls, completements of implementations
945    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
946    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
947      (not seem any difference in testing results).
948    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
949       at face corners.
950    o pkg/generic_advdiff:
951     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
952      loop range indices for computing vertical advection tendency
953      and do the calculation in the interior only (no overlap) ;
954      for now, only implemented for SOM advection (to save CPU time).
955     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
956    o exch2 adjoint
957      First set of changes:
958      - add exch2 hand-written adjoint templates
959      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
960        This will require cleanup in pkg/autodiff/*.F
961        (changed routines currently kept separate in verif. code/)
962      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
963        that used to hide exch2 or cubed-sphere specific code
964        (commented via 'cph-exch2')
965    o pkg/seaice
966      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
967    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
968       output of global_ocean.cs32x15.thsice .
969    
970    checkpoint59e
971    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
972      for B-grid vector (not yet tested) and C-grid vector (<- only used
973      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
974    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
975      (#ifdef ALLOW_SALT_PLUME)
976    o gather_2d/scatter_2d: removed halo regions
977    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
978      scheme and the corresponding test case (under front_relax dir). For now,
979      only available with Skew-flux form and not yet tested in realistic set-up.
980      adjoint: store directives updated, but gradient checks deteriorated,
981      so maybe GM/Redi adjoint is now broken.
982    o seaice adjoint
983      * add AREA, HEFF, HSNOW as control variable
984        (should not change lab_sea results)
985      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
986    o pkg/seaice:
987      * added computation of saltFlux in seaice_growth;
988        For time being, sea ice salinity is assumed constant
989        contribution of snow flooding to freshening of sea ice is neglected.
990        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
991        defaults to 0.0 in order to maintain backward compatibility.
992        Typical values for SEAICE_salinity are 4 to 10 g/kg.
993      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
994      * added SEAICE_availHeatFrac, which specifies fraction of surface level
995        heat content used to melt or grow ice
996      * commented out cap of HICE: it helps keep ice thinner
997      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
998      * applied OBCS T/S mask to HEFFM sea ice mask
999    
1000    checkpoint59d
1001    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
1002     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
1003     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
1004    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
1005     and change default value of parameter "GM_Small_Number";
1006     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
1007       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
1008       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
1009    o pkg/ecco: cost function when applying pkg/smooth to controls
1010    o pkg/ctrl: add forcingPrecond run time parameter
1011    o pkg/seaice:
1012     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
1013     - fix bug in metric terms of u-equation in LSR solver (implicit part),
1014       changes verification/lab_sea
1015     - rearrange implicit part of u-equation in LSR solver to make it easier to
1016       read, understand, and debug. This causes changes at the truncation level.
1017     - fix (serious) bug in the boundary conditions (sign error in the implicit
1018       part) of the LSR solver. Changes all LSR results.
1019     - fixed problem with HSNOW initialization to avoid thick snow when AREA
1020       is initilized with small values - does not change lab_sea results.
1021     - added HsnowFile initialization capability
1022    o pkg/smooth: addition to model/src and pkg/ctrl so allow
1023     initialization of pkg/smooth and application to control vector
1024    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
1025    o dependencies: pkg/profiles requires pkg/cal
1026    o pkg/profiles:
1027     - added option ALLOW_PROFILES_GENERICGRID
1028         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
1029         that interpolation information (grid points and coefficients) is provided
1030         within the netcdf input files.
1031         -> sample matlab scripts can be found in MITgcm_contrib/gael
1032         that allow you to prepare netcdf input files.
1033     - also modified: cleaner include statements, cleaner error print statements,
1034       cleaner stops when error, and more tests of the netcdf input files consistency.
1035    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
1036    o pkg/seaice:
1037     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
1038       requires a new routine: seaice_diagnostics_fill.F
1039     - make sure that seaice does not move if not forced (pressure replacement
1040       method, Hibler and Ip, 1995), changes results
1041     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
1042     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
1043       It is turned off by default (=-1.), because it changes the results.
1044     - make it possible to read AREA from a file, too.
1045    
1046    checkpoint59c
1047    o add S/R and diagnostics for oceanic mixed-layer depth
1048    o move GMRedi call after all vertical mixing schemes (including KPP)
1049    o pkg/thsice:
1050     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
1051      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
1052    o pkg/obcs:
1053     - bug fix for balance code
1054    o pkg/seaice:
1055      - allow values of SEAICE_elasticParm > 1
1056      - add new parameter SEAICE_evpTauRelax as an alternative
1057        to SEAICE_elasticParm
1058      - make lsr boundary conditions free slip (by default), changes result
1059      - add code for no slip boundary conditions for lsr
1060      - set minimum of zeta to zero (and not 4e8) (changes results)
1061      - add a cap on AREA after advecting AREA if seaice_growth is not called
1062    o change calculation of Visbeck K:
1063      - no longer depend on tapering scheme; instead, compute slope (limited
1064        by GM_maxSlope). this is equivalent to what was comuted before with
1065        clipping or linear tappering.
1066      - fix vertical averaging (wrong by 1/2 level)
1067      - leave the old version (but will not be maintained) within
1068        #ifdef OLD_VISBECK_CALC / #endif
1069      - update output of exp. ideal_2D_oce
1070    o change error catch in calc_r_star to improve vectorization
1071    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
1072      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
1073    o adjoint:
1074      Re-organized adjoint checkpointing according to Matt Mazloff
1075      (but with modifs/completions/cleanups)
1076      Storing is now bundled into large arrays to optimized I/O
1077      (and second step in cleanup of the_main_loop)
1078    
1079    checkpoint59b
1080    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
1081      - export/import (between ocean & coupler) fields needed for ocean DIC.
1082    o pkg/seaice:
1083      - get rid of three more exchanges seaice_calc_viscosities (required
1084        different loop boundaries in seaice_lsr and seaice_ocean_stress)
1085      - bug fix in seaice_ocean_stress (update of lab_sea required)
1086      - reduce loop boundaries to necessary minimum also in seaice_evp
1087      - go back to the old way of computing deltaC/Z as the adjoint likes that
1088        better
1089    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
1090      passive tracer to an Age Tracer) + update output.txt
1091    o pkg/exf:
1092      - implement A-grid / C-grid selection for wind-stress input files.
1093      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
1094      for now, in exf_bulk_largeyeager04.F only :
1095      - change implementation for case where windspeed + 2. components wind-stress
1096        are read-in. AND use rhoConstFresh to convert evap.
1097    o pkg/seaice:
1098      - use correct EXCH_UV for wind-forcing (on A-grid).
1099      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
1100        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
1101    o pkg/exf:
1102      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
1103      EXF_INTERPOLATION:
1104      - merge global_with_exf/code version of exf_interp_read.F
1105        to the main code ;
1106      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
1107        reading the file ; Important: This options needs to be defined to recover
1108        previous code.
1109        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
1110      - no longer loose real*8 precision along the way when using exf_iprec=64.
1111    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
1112      - change discretisation of evp-solver in order to avoid another exchange
1113        (changes lab_sea) and clean up a little
1114      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
1115        help the adjoint (this also changes the results slightly)
1116      - add a few "_d 0" where they had been missing in seaice_evp.F
1117      - cleaning up: remove unused seaice_calc_rhs.F
1118    o pkg/exf: some cleaning-up:
1119      - change various "constants" into runtime parameters
1120      - cleaned-up Large&Yeager04 routine which should eventually
1121        replace exf_bulkformulae.F (changed names of S/R and CPP)
1122        and merged various ALLOW_ATM_WIND options
1123     only used with thsice pkg (in thsice_get_exf.F):
1124      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
1125        which are used when useStabilityFct_overIce=TRUE (= the default)
1126      - change default values of ice & snow emissivity and scale downward LW
1127        by ice & snow emissivity.
1128    o pkg/thsice:
1129     fix few little problems, in thsice_calc_thickn.F:
1130      - growth vertically (and not laterally) if iceFrac == iceMaskMax
1131      - melt only laterally if hIce < hThinIce (as the comments say)
1132      and in thsice_extend.F:
1133      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
1134      - start to form ice as soon as the minimum ice-volume is reachable.
1135     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
1136      and cpl_aim+ocn
1137    o pkg/kpp
1138     - move computation of surface related input fields to KPP into a new
1139       subroutine kpp_forcing_surf.F
1140     - remove wrong (within bi,bj loops) EXCH calls.
1141     - little cleaning (add argument myThid in last position, cvs header ...)
1142     - for now, fix conservation problem by exchanging KPPviscAz (may not
1143       be the best fix)
1144    o pkg/seaice
1145     - check for inconsistent evp parameter/cpp-flag combination
1146     - remove leftover errIO flat for obsolete name list error handling
1147    o OpenAD
1148     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
1149    
1150    checkpoint59a
1151    o pkg/seaice: some parameter clarifications and a little bit of clean up
1152    o pkg/thsice: rename run-time parameters:
1153       himin       -> hIceMin
1154       himin0      -> hThinIce
1155       hihig       -> hThickIce
1156       i0          -> i0swFrac
1157       transCoef   -> bMeltCoef
1158       frac_energy -> fracMelting
1159      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
1160       with default values (for now) that do not change the results.
1161      remove old version of thsice vars advection in pkg/seaice.
1162    o in FFIELDS.h:
1163      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
1164      - make pLoad & sIceLoad always available (but still only used if
1165         ATMOSPHERIC_LOADING is #define).
1166    o pkg/kpp: replaced _KPP_RL with _RL
1167    o bug fixes for vertical diffusivity computations when both KPP and
1168        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
1169        are no longer updating the vertical diffusivity array
1170        (passed as argument) but are (re-) setting those arrays.
1171    o pkg/seaice: fix bug in evp solver, while doing that
1172      - change (improve?) discretization of stress computations for both
1173        cgrid-lsr and evp solver
1174      - add a new routine to compute strain rates
1175      - the above changes lab_sea results
1176      - add no slip conditions for evp solver (off by default), lsr-version
1177        may follow
1178      - fix exchange for shear at Z-points (does not change lab_sea)
1179      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
1180        (to force the user to pick a time step since there is not "safe" way
1181        of choosing it)
1182      - add principal stress diagnostics
1183      - rearrange fields for evp a little to avoid having to call a: too many
1184        exchanges and b: exchanges for stress trensor components which we do
1185        not have.
1186      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
1187        of evp, complete rewrite for lsr case (latter is does not yet work
1188        in all cases)
1189    o pkg/kpp: add code to have mixing in shelf ice caverns
1190      - add myThid to all kpp routines (long overdue)
1191    
1192    checkpoint59
1193    o pkg/exf:
1194      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
1195        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
1196      - move exf header files from lower_case.h to UPPER_CASE.h ;
1197        add missing cvs Header & Name
1198      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
1199      - add namelist param. selectStressGridPosition, exf_monFreq
1200      - retire many _CLIM routines, and remove data.exf_clim
1201        + params moved to data.exf
1202        + climsst, climsss now handled by exf_set_gen, i.e.
1203          climss?period=0 refers to constant field,
1204          climss?period=-12 to monthly forcing
1205      - split up namelists in data.exf
1206    o pkg/seaice:
1207      - remove seaice_exch and seaice_exch_uv
1208      - remove superfluous exchange of theta
1209      - add myThid to seaice_budget_ocean/ice
1210      - add new interface for atmospheric wind forcing (C-grid only)
1211        + new routine
1212        + two new field (taux, tauy for stress over ice)
1213        + removed one global field (DAIRN) for C-grid case only
1214    o pkg/thsise
1215      - 2nd set of modifs for thsice adjoint in conjunction with exf
1216    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
1217    
1218    checkpoint58y_post
1219    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
1220      vertical diffusivity, similar to that in MOM4; turned on using
1221      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
1222      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
1223    o Added capability for 3D specification of background vertical diffusion
1224      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
1225      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
1226      "data" file that contains the 3D vertical diffusivity coefficients.
1227    o ice dynamics (pkg/seaice) with thsice thermodynamics:
1228      - add code within pkg thsice to advect & diffuse sea-ice fields
1229      similar to (and will replace) what has been added in  seaice_advdiff.F,
1230      but: - conserving Mass, Heat & Salt.
1231           - better when using non-linear advection scheme (not yet fully tested)
1232           - can also be used in atmospheric set-up (for now, only the diffusion).
1233    
1234    checkpoint58x_post
1235    o IO option for global-file compact format:
1236      - add options when generating topology (utils/exch2/matlab-topology-generator)
1237      - add I/O capability (pkg/mdsio).
1238      - adapt utils/matlab/rdmds.m to read this format.
1239      for now long-line format not yet supported by pkg/mdsio (& exch2).
1240    o shelfice: add a few diagnostics
1241    
1242    checkpoint58w_post
1243    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
1244      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
1245      (and replace horiVertRatio in NH code).
1246      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
1247                         and tutorial_plume_on_slope (sensitive to truncation)
1248    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
1249      directly to drive seaice model (C-grid only)
1250    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
1251     - reintroduce computation of wind from stress,
1252     - compute tau (in exf_bulkformulae.F) from windstress averaged to
1253       mass points to avoid tau = 0
1254     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
1255    o rdmnc.m: make it work with "global" files created with gluemnc
1256    o rdmnc.m : some improvements in dealing with singleton dimension
1257      (tested on all testreport mnc output files).
1258    o genmake2: disable pkg/profiles if netcdf test fails.
1259    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
1260    o move call to cal_readparms up to make calendar parameters/variable available
1261      to all packages
1262    
1263    checkpoint58v_post
1264    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
1265      useDynP_inEos_Zc tested.
1266    o pkg/exf: changes to properly interpolate/mask/scale initial fields
1267    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
1268      and portions thereof.  See read_cs.txt for description and examples.
1269    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
1270      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
1271      following the great-circle arc between those 2 points.
1272    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
1273      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
1274    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
1275     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
1276     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
1277     - still needs work (not working with some options ; efficiency to improve)
1278       and serious testing.
1279     - use this scheme for temperature & salinity in 2 advection test exp.:
1280       advect_xy & advect_xz, respectively.
1281    
1282    checkpoint58u_post
1283    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
1284    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
1285    o testreport: add option "-skipdir" to skip some test.
1286    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
1287      momentum calculation.
1288    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
1289    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
1290      remove checkpoint.F and the_correction_step.F (no longer used);
1291      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
1292    o add option (linFSConserveTr) to correct for tracer source/sink due to
1293      Linear Free surface
1294    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
1295    o pkg/thsice: fix reading mnc-pickups
1296    
1297    checkpoint58t_post
1298    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
1299    o pkg/mdsio:
1300     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
1301       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
1302       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
1303     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
1304     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
1305       either MDS_READ_FIELD or MDS_WRITE_FIELD )
1306     - new S/R (to replace MDSWRITEMETA), which allows to write more
1307       informations (variable names, time ...) to meta files.
1308     - modify rdmds.m to give back the meta file content.
1309    o pkg/diagnostics: change vertical interpolation to be safer, and more
1310       flexible (define p-levels to interpolate to in data.diagnostics);
1311      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
1312       diagnostic pointer.
1313    o pkg/seaice: more cleaning up of seaice_growth, added many comments
1314    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
1315    o fix multi-category seaice:
1316     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
1317       SEAICE_MULTICATEGORY
1318     - fix short wave heat flux
1319    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
1320       and allow to use EVP solver. Change forward lab_sea: test both EVP
1321       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
1322    o Initial check-in of lab_sea adjoint
1323      (very similar to natl_box_adjoint/code_seaice)
1324      * used C-grid and EVP solver
1325      * used KPP, GM/Redi
1326      * uses inAdExact=.TRUE.
1327      * gradient checks fail for both ADM and TLM
1328        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
1329        f.d. gradients actually seem more problematic than ADM, TLM gradients;
1330        issue is related to forward mismatch between g77 an ifort
1331    o pkg/seaice: overhaul of thermodynamics
1332     - growth.F and groatb.F are replaced by new routine seaice_growth.F
1333     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
1334     - move a few global fields out of SEAICE.h into seaice_growth.F and
1335       make them 2D (FICE/QNETO/ ...)
1336     - remove FO (it is the same as QNETO)
1337     - introduce a few local fields to avoid modifying external fields such
1338       as atemp, etc.
1339    
1340    checkpoint58s_post
1341    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
1342      changed exf_set_gen.F so that
1343        genperiod=0 means input file is one time-constant field and
1344        genperiod=-12 means input file contains 12 monthly means
1345    o CG2D: use pre-computed solver main-diagonal (stored in common block);
1346      this affects truncation error ; generate new output file for exp. which
1347      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
1348        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
1349        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
1350        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
1351        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
1352        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
1353    o start implementation of deep-atmosphere and anelastic formulation
1354    o verification: remove 2nd copy of input files and use script "prepare_run"
1355      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
1356    o mom_common/vecinv/fluxform: fix a few initialisation isssues
1357    o profiles: fix for multithreaded case
1358    
1359    o diagnostics: rename few diags:
1360      s/'PRESSURE'/'RCENTER '/g
1361      s/'TICE    '/'oceFreez'/g
1362      s/'TAUX    '/'oceTAUX '/g
1363      s/'TAUY    '/'oceTAUY '/g
1364      s/'SWFLUX  '/'oceQsw  '/g
1365      s/DIFx/DFxE/g
1366      s/DIFy/DFyE/g
1367      and add few ocean-forcing diagnostics:
1368      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
1369    o modifications to pkg/seaice/growth.F and budget.F, which change results of
1370      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
1371      as actual snow thickness.  It now refers everywhere to effective snow
1372      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
1373    
1374    checkpoint58r_post
1375    o modifications to pkg/seaice/growth.F, which change results of
1376      lab_sea experiment: fixes pertain to melting snow over open water, to
1377      masking EVAP under sea ice, and to using the correct AREA variable for
1378      computations of EVAP, PRECIP, HSNOW, and GHEFF
1379    o add ability to read bathy, salt, and theta using MNC (off by def)
1380    o add flooding algorithm and advection of HSNOW for pkg/seaice;
1381      both are turned off by default and do no change any results
1382    o seaice advection with pkg/thsice: a step toward the use of non-linear
1383      advection scheme, but #ifdef or commented out for now (requires more EXCH).
1384    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
1385      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
1386      in natl_box (affects results @ truncation level: update output.txt)
1387    o multi-threading and IO:
1388      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
1389      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
1390        (needed to work with SingleCpuIO): tested in all verif. exp.
1391    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
1392      affects the results (but none of the verification test uses this scheme).
1393    o Adding some pkg/diagnostics capability to pkg/seaice
1394      (will certainly be subject to changes)
1395    o ctrl: adding new control variables:
1396      lwflux, lwdown, evap, snowprecip, apressure, runoff
1397    
1398    checkpoint58q_post
1399    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
1400      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
1401      high_res_cube configuration by 4% on Columbia.
1402    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
1403      add (in global_with_exf/code) a version of EXF_INTERP_READ without
1404      dynamical allocation (seems to work in multi-threaded).
1405    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
1406      single CPU io) so that TAF does not have to see EESUPPORT.h
1407    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
1408    
1409    checkpoint58p_post
1410    o obcs: stop if obcs is used with useCDscheme = .true.
1411    o shelfice:
1412     - fix a sign error so that no slip at shelfice interface works
1413     - remove stop for combination non-hydrostatic code and shelfice. That does
1414       not mean, that the results are correct, but at least they are numerically
1415       stable
1416    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
1417    o added adjoint exch routined for all exch*3d* routines
1418      and updated flow directives
1419    
1420    checkpoint58o_post
1421    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
1422      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
1423    o change controling S/R for writing pickup file (new S/R do_write_pickup)
1424      and clean-up reading/writing of pickup files.
1425    o fix local version of read/write pickup (NH part) in rotating_tank/code
1426    o simplify EXCH interface:
1427     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
1428     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
1429    o added the regrid package
1430    o shelfice:
1431     - add a simple boundary layer scheme to reduce noise
1432     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
1433    
1434    checkpoint58n_post
1435    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
1436       local variable (not in common block).
1437    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
1438      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
1439      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
1440        to work with SingleCpuIO.
1441    o add "_d 0" to real constant of pkg/cfc subroutines ;
1442       update exp. cfc_exemple & tutorial_cfc_offline output files.
1443    o multi-threading and IO:
1444      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
1445        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
1446      - barrier before and after reading.
1447      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
1448      - avoid using MDS_WRITELOCAL for LAND pkg output.
1449      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
1450        common-block variables ; Allows multi-threading with master-thread IO.
1451    o change default MAX_NO_THREADS from 32 to 4 ;
1452      and stop cleanly when MAX_NO_THREADS is too small.
1453    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
1454    
1455    checkpoint58m_post
1456    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1457       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1458    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1459       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1460       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1461    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1462        add MITgcm_tutorials (= code + all the tutorials)
1463    o ecco, option to compute cost for total ssh (mean+anom)
1464    o consistent with addition of ptracer and ssh in pkg/profiles
1465    o profiles: adding ptracer and ssh
1466    o testreport: change multi-test output-file name
1467      (from output.txt.{name} to output.{name}.txt)
1468    o profiles: now ok for mutli-tiles case
1469    o seaice: add 4 parameters for different advection schemes for area,
1470      (effective) seaice thickness, enthalphy, and snow height. Their default
1471      is the standard parameter SEAICEadvScheme
1472    o calc_gw:
1473     - add cosFacU in zonal viscous flux (harmonic.visc.).
1474     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1475       of tutorial_plume_on_slope.
1476    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1477    o calc_gw: true flux-form, account for horizontal grid spacing.
1478      update rotating_tank results, but not plume_on_slope (affected at
1479      truncation level, 11 digits).
1480    
1481    checkpoint58l_post
1482    o calc_gw:
1483     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1484     - remove side-drag for now (need to fix it); update plume_on_slope results.
1485     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1486    o commit code to make SST/SSS weights spatially variable
1487      (based on either variable in-situ or variable initial T/S weights)
1488    o pkg/ecco:
1489      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1490        now based on horizontally varying weights wthetaLev, wsaltLev
1491      * cost_averagesflags now returns year indices in addition to day, month
1492      * sflux balance is performed on annual basis
1493        (sflxumm, sfluxmm2, bal_sfluxmm)
1494      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1495        including separate counting and multipliers
1496    o pkg/rbcs
1497      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1498    
1499    checkpoint58k_post
1500    o testreport:
1501     - always build in dir. "build" (if not there, mkdir build instead of building
1502       & running in input)
1503     - run in dir run (if it exists), in build otherwise.
1504     - call prepare_run (if input/prepare_run exists)
1505     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1506    o pkg/exf modifications to interpolation and rotation routines for more
1507       reasonable treatment of North Pole singularity: for tracers North Pole
1508       value is set to northernmost zonal-mean value, for zonal velocity it is
1509       set to zero, and for meridional velocity it is set to northernmost value.
1510    o pkg/exf/exf_check_range.F
1511     - add tile index to diagnostics and move stop statement to the very
1512       end of the routine.
1513    o pkg/diagnostics: (diagnostics_main_init.F)
1514      define title of isomorphic variables according to the current config.
1515    o pkg/thsice with pkg/seaice dynamics:
1516    - fix domain of computation (interior only, required for exf) and do exchanges
1517    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1518    o towards a standard way of dealing with multi-threading in MONITOR
1519      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1520    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1521       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1522    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1523    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1524    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1525       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1526    o tracer advection:
1527     - clean-up and simplify calc_common_factors.F
1528     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1529       advection subroutine (but still not used within DST advection S/R)
1530    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1531    
1532    checkpoint58j_post
1533    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1534      from file (collects calls previously in FORWARD_STEP)
1535    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1536    o adjoint store dir. adjusted accordingly
1537    o genmake2
1538      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1539    
1540    checkpoint58i_post
1541    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1542      on wind stress (SEAICEstressFactor defaults to 1.)
1543    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1544      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1545    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1546      on CS-grid: no longer loosing mass.
1547    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1548    o pkg/ggl90: fix sloppy output and fix a bug
1549    o pkg/seaice: added SEAICEuseEVPpickup parameter
1550      - Set to false in order to start EVP solver with
1551        non-EVP pickup files when using SEAICEuseEVP
1552      - fix sign error in diffusion in seaice_calc_rhs
1553    
1554    checkpoint58h_post
1555    * Modifications for bottom topography control
1556      o replace hFacC by _hFacC at various places
1557      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1558      o add non-self-adjoint cg2d_nsa
1559      o update autodiff support routines
1560      o re-initialise hfac after ctrl_depth_ini
1561      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1562    * Adding verification for 5x5 box (4-layer) bottom topography control
1563    
1564    checkpoint58g_post
1565    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1566       used for mean seasonal cycle, mean diurnal cycle); add an example
1567       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1568    o pkg/ggl90:
1569      - add parameter (minimum surface kinetic energy)
1570      - fix bug (avoiding division by zero)
1571    o couple pkg/thsice to pkg/seaice:
1572      - modify advection in seaice to accomodate new scalar fields to be advected
1573      - only muliDimAdection scheme work with seaice/thsice
1574      - mapping of thsice-variables to seaice-variables, back and forth
1575      - does not break the verification experiments, but does not give the
1576        desired results either
1577    o pkg/seaice
1578      - make (default) second order advection a bit less confusing?
1579    
1580    checkpoint58f_post
1581    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1582      to pkg/seaice):
1583      - new routines thsice_map_exf and thsice_get_exf provide the interface
1584      - add an additional formal parameter to thsice_solve4temp
1585    o pkg/exf:
1586      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1587      - correct Stefan-Boltzmann constant
1588      - new parameter for longwave surface emittance
1589      - separate some stuff from exf_bulkformulae into new routines  
1590        exf_radiation, exf_wind
1591      - add new parameters and constants: longwave emissivity for ocean, ice
1592        and snow, evaporation parameters over ice
1593      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1594        either wind from stress or stress from wind
1595    o pkg/thSIce:
1596    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1597    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1598       and THSICE_CALC_THICKN
1599    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1600    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1601      to make debugging easier.
1602    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1603    o pkg/bulk_force:
1604      - clean-up comments and parameters ;
1605      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1606    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1607      generate new output for test-experiment: aim.5l_cs.thSI
1608    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1609      testreport accordingly
1610    
1611    checkpoint58e_post
1612    o SEAICE_CGRID adjoint done
1613    o R_STAR adjoint implemented.
1614      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1615      * need to sort out init. of h0facc, etc.
1616    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1617      to be able to use it in pure forward.
1618    
1619    checkpoint58d_post
1620    o upgrade simple test-experiment to tutorial example:
1621     step.1: duplicate the experiment and (step.2) will remove the old copy.
1622      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1623      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1624      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1625      tutorial_global_oce_biogeo    <- copy of dic_example
1626      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1627      tutorial_plume_on_slope       <- copy of plume_on_slope
1628      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1629      tutorial_global_oce_optim     <- empty for now (David ?)
1630      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1631     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1632    o correct a sign problem in cost_scat.F
1633    o obcs and ptracers: fix boundary conditions for advections schemes
1634      with larger stencil
1635    o thsice adjoint: start
1636    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1637      completeness
1638    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1639      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1640    o ptracers adjoint:
1641      * avoid extensive recomputatations
1642      * fix missing re-init. of gptr (missed by TAF)
1643    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1644      me to turn off the excessive output to STDOUT that this package produces
1645    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1646      and add those terms in Vector-Invariant formulation.
1647    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1648      if the control period (xx_hfluxperiod etc) is 0
1649    o in profiles pkg, clean routines and fix details
1650    o in ecco pkg, reading ssh data:
1651      fix problem in case the model does not start at iter0=0
1652    o fix mnc-pickup/restart for ptracers
1653    o new package prifiles:
1654      code to compute profile-based cost by Gael Forget
1655      (modifs in ecco, ctrl, autodiff)
1656    o Benign bug fix in initialization (spotted by M. Mazloff) of
1657      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1658    
1659    checkpoint58c_post
1660    o adjoint: finish NLFS adjoint and provide reference output in
1661      verification/global_ocean.90x40x15/results_ad_nlfs
1662    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1663      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1664      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1665      with SEAICE_CGRID defined.
1666    o move calendarDumps from "data" to "data.cal" and clean-up the code
1667      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1668    o add useEXF & useCAL flags (for now, set in hard-coded way)
1669    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1670      (were missing in NH mode, and wrong in quasihydrostatic mode).
1671      waiting for Chris updated version of calc_gw to add those CALLs.
1672    o fix bug in quasihydrostatic S/R ;
1673      add a test for this option: global_ocean.90x40x15.qshyd
1674    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1675      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1676    o add on/off flag useOffLine for package OFFLINE
1677    o seaice:
1678      - modify advection so that it works also on the C-grid
1679      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1680        problem in multi-tile runs with C-grid
1681      - add flags for clipping ice velocities and/or masking solver forcing
1682      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1683        C-grid solver
1684      - added a few comments to seaice_diffusion.F
1685      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1686        are now exclusive)
1687      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1688        required re-ordering the code a little:
1689       + make DAIRN global variable (defined in SEAICE)
1690       + move computation of the viscosities eta and zeta into a new separate
1691         routine (because I need to recompute them in seaice_ocean_stress.F)
1692    
1693    checkpoint58b_post
1694    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1695      update output.txt of exp. aim.5l_cs.thSI
1696    o various mnc cleanups and improvements:
1697      + shrink lookup tables by factor of ~4
1698      + better error reporting when running out of lookup space
1699      + able to handle longer path/file names (up to 500 chars)
1700    o adjoint:
1701      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1702      - TBD: "hidden" mom_vecinv recomp. in dynamics
1703    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1704     (allow to differentiate between forcing components using new integer flags:
1705      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1706     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1707    o ecco
1708      - enable trend removal from SSH anomaly obs.
1709    o adjoint
1710      - a fix for PmEpR when #undef EXACT_CONSERV
1711      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1712      - try to fix "hidden" recomp. in forward_step for NLFS
1713        (NLFS seems broken sometimes after I checked it in)
1714    o seaice:
1715     - add c-grid version of the dynamic solver:
1716       + three new routines that are the c-grid substitute lsr, dynsolver
1717         and ostres
1718       + put a few fields that were local to dynsolver into global common
1719         blocks, so that I can move the computation of stresses etc into
1720         seaice_lsr (saves coding but may break the adjoint).
1721     - replace more hardwired parameters by runtime parameters
1722     - add ice masks that mask the rhs of the implicit solvers where there
1723       is no ice (commented out in seaice_dynsolver, because i am not sure
1724       if this works properly), eventually this should replace the clipping
1725       of ice velocities in seaice_dynsolver to +/-40cm/s.
1726    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1727      include it only where its needed
1728    o move balancing of fluxes before the call of external_forcing_surf
1729    o seaice:
1730      - correct units of turning angles (now they are really in degrees)
1731      - move computation of GWATX/Y out of main routine into dynsolver
1732      - initialize GWATX/Y in seaice_init
1733    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1734      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1735    o seaice: add runtime flags for turning angles (default to zero)
1736    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1737      and trend from exf forcing and ctrl control adjustments
1738    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1739      (since checkpoint57x_post)
1740    o change the default rotation period to 86164.s = the Earth rotation
1741    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1742      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1743    o seaice advection: add code for choosing between the default (2nd order
1744      central differences) and multiDim advection schemes provided by
1745      pkg/generic_advdiff
1746    o seaice:
1747      - removed all references to SEAICE_GRID.h fields from
1748        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1749        (cubed-sphere configuration will change a little)
1750      - grid computations in seaice_init are obsolete now.
1751      - cleaned up code a little so that is easier to read (hopefully).
1752      - added new (better?) discretizations of default advection and diffusion
1753        (turn on with SEAICEuseFluxForm)
1754      - replace 1 in 3d global fields by kSurface in growth.F
1755      
1756    checkpoint58a_post
1757    o seaice:
1758      - bug fix in advect.F
1759    o shelfice:
1760      - separate shelfice load anomaly from pload (breaks with time
1761        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1762        Its default is 0., but it may be computed more cleverly from (unknown)
1763        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1764        done offline. A good approximation of the pressure load anomaly is
1765        necessary to avoid large initial adjustment processes underneath
1766        deep-reaching shelfice.
1767      - small fix in ISOMIP shelfice_thermodynamics
1768      - add more sophisticated thermodynamics of Hellmer (1989), this is
1769        now the default
1770      - give a few constants more intuitive names
1771    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1772      if bulk formulae are used in long integration (especially EmPmR). Turn
1773      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1774      if balancePrintMean, the imbalance that is substracted is printed to
1775      STDOUT.
1776    o fix bug (typo) in obcs_apply_eta.F
1777    o add a new package shelfice which enables us to model the circulation
1778      underneath shelf-ice with draughts of hundreds of meters.
1779     - works
1780     - to do: + include improved thermodynamics
1781              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1782                instead of new field kTopC
1783              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1784                instead of new field R_shelfIce and new code in ini_depth.F
1785                and ini_mask_etc.F?
1786              + adjust vertical mixing schemes?
1787    o seaice pkg:
1788     - add a cpp-flag to include a simple formula for a salinity dependent
1789       freezing point of sea water at the surface
1790     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1791       meridional stresses are now different (and hopefully correct)
1792    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1793       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1794       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1795    o pkg/diagnostics: add options and parameters for regional-statistics
1796       diagnostics ; define regions by reading a region-mask from a file
1797       (might add other options later)
1798    o pkg/bulk_force:
1799     - add option and parameters to use AIM surface-flux formulae.
1800     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1801       others forcing fields (defined in PARM05, parameter file "data") are loaded
1802       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1803     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1804     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1805     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1806       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1807     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1808    
1809    checkpoint58
1810    o add "--embed-source" option to genmake2 which, when the supporting
1811      tools can be compiled (as determined by genmake2) will turn on the
1812      embed_files package which then embeds the entire MITgcm source code
1813      (*.[fFhc] + Makefile) used for the build within the executable
1814      - requested by CNH but off by default
1815      - adds a paltry <9MB to the mitgcmuv executable in most cases
1816      - only writes the output when useEMBEDSRC in eedata is true
1817    o clean up 3-dim. relaxation codes:
1818      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1819      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1820      * Thanks to Tom Haine for testing!
1821    
1822    checkpoint57z_post
1823    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1824      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1825    o fix the pickup behavior for obcs in combination with ptracers
1826    o fix a bug in ptracers_external_fields_load
1827    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1828      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1829    o transfered surface NH pressure to eta field (if exactConserv).
1830    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1831         and update lab_sea output.txt file.
1832    o completing 3-dim. relaxation code: additional term
1833         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1834      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1835      * At compile time, in "EXF_OPTIONS.h" set
1836          #define  ALLOW_CLIMTEMP_RELAXATION
1837          #define  ALLOW_CLIMSALT_RELAXATION
1838      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1839          tauThetaClimRelax3Dim = 15552000.0,
1840          tauSaltClimRelax3Dim  = 15552000.0,
1841      * 3 cases:
1842          1) Use a constant-in-time 3-dim. field
1843          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1844          3) Real-time relax. to time-evolving prescribed field
1845    o Adding Laplacian-type smoothness constraint on
1846      initial and boundary (forcing) controls (ic, bc)
1847      * enable at compile-time via
1848        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1849      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1850      * Absolute scale somewhat unclear so far
1851      * no area weighting was included since no other cost term does so far
1852    
1853    checkpoint57y_post
1854    First step for a NLFS adjoint
1855    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1856    o new init. routines for calc_r_star, calc_surf_dr
1857    o still need to deal with ini_masks_etc
1858    o testreport seemed happy
1859    checkpoint57y_pre
1860    
1861    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1862    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1863    o add new offset feature to offline pkg (plus minor cleanup)
1864    o cfc fixes for final year of integration
1865    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1866      be in GCHEM_OPTIONS).
1867    
1868    checkpoint57x_post
1869    o fix testreport Pb in multiple test experiment.
1870    o cleanup our namelist syntax in verification:
1871      - make it more F95 standards compliant (some work still needed)
1872      - allows the vast majority of our tests to work with gfortran
1873    o Non-Hydrostatic:
1874     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1875     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1876    o Allow to apply AB on T,S rather than on AB(gT,gS):
1877     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1878     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1879       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1880     - need a "clever" read_pickup to restart from the other AB formulation
1881    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1882    o remove some unused variables (reduces number of compiler warnings)
1883    o adjoint
1884      * Disable useVariableViscosity for adjoint for time being
1885        (there are a number of extensive recomputations)
1886      * Initialize certain variables needed for adjoint
1887    
1888    checkpoint57w_post
1889    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1890                 fix the singleCpuIO RS version of MDSWRITEFIELD
1891       and add a WARNING if using globalFiles=T with multi-processors.
1892    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1893      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1894    o tracer advection scheme:
1895      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1896       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1897       was not very convenient).
1898      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1899       (further tests needed for the implicit DST & Flux-Limiter schemes).
1900    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1901      and sRef for convenience, handy, when you want to initialize
1902      ptracers in a large domain with a constant non-zero value. Also,
1903      untangle ptracers_init.F a little.
1904    
1905    checkpoint57v_post
1906    o change dome exp. to use variable viscosity in side-drag terms.
1907    o remove all the files from the cfc_offline test since they are now
1908      incorporated into tutorial_cfc_offline which has been producing
1909      identical results for a few days of testing
1910    o add new parameter: sideDragFactor to enable half-slip-side BC
1911      and change side-drag S/R to use viscosity from mom_calc_visc
1912      (can switch back by setting sideDragFactor=0.); affects results at
1913      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1914       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1915  o vorticity & strain are now computed without masking, to account for  o vorticity & strain are now computed without masking, to account for
1916    no-slip-side BC in variable viscosity calculation ; mask is applied    no-slip-side BC in variable viscosity calculation ; mask is applied
1917    anyway later on, before computing advection/coriolis terms.    anyway later on, before computing advection/coriolis terms.
1918  o modify exp4 to test new obcs support reading from external files  o modify exp4 to test new obcs support for reading from external files
1919    and for passive tracers    and for passive tracers
1920  o fix behavior of ptracers_monitor when monitor output is written to a  o fix behavior of ptracers_monitor when monitor output is written to a
1921    netcdf-file; still not independent of monitor.F (writes in the same    netcdf-file; still not independent of monitor.F (writes in the same
# Line 741  o add two new packages Line 2649  o add two new packages
2649    - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme    - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2650    - these scheme operate in a similar manner as KPP (without ghat, of    - these scheme operate in a similar manner as KPP (without ghat, of
2651      course), however there is only one diffusivity that is used for both      course), however there is only one diffusivity that is used for both
2652      temperature and salinity (and passive tracers)ç      temperature and salinity (and passive tracers)
2653  o add offline package  o add offline package
2654  o add "verification/dic_example" which contains a dic-gchem-ptracer setup  o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2655    provided by Stephanie Dutkiewicz    provided by Stephanie Dutkiewicz

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