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revision 1.553 by jmc, Wed Sep 28 00:20:52 2005 UTC revision 1.1143 by mlosch, Mon Jul 20 07:42:32 2009 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/seaice:
8     - remove unused variables in seaice_evp
9     - reduce number of SQRT in seaice_evp and seaice_calc_viscosities
10    o eeset_parms.F, open_copy_data_file.F & ini_parms.F:
11       named file replacing SCRATCH files (for TARGET_BGL & TARGET_CRAYXT):
12       each processor open a different file (a fix from Matt).
13    o cg2d:
14       use simple EXCH (overlap size = 1 and ignore corners), like in cg3d.F :
15       this reduces number of EXCH calls by 2 when using exch2.
16       For now, keep previous size array for gc2d_nsa.F to avoid Pb with store
17       directives and missing simple EXCH (exch_s3d_rx) adjoint code.
18    o pkg/thsice:
19       add code for Near Infra-Red albedo (from Jeff)
20       (turned on with run-time flag: thSIce_calc_albNIR, in data.ice).
21    o ini_model_io:
22       move (from packages_readparms.F & initialise_fixed.F) to ini_model_io.F
23       MNC & MONITOR initialisation calls; move MNC calls from {pkg}_readparms.F
24       to {pkg}_init_fixed.F for {pkg}= kpp, seaice & shelfice.
25    
26    checkpoint61s
27    o pkg/exch2 (exch2_rxN_cube*):
28       remove last BARRIER (no need to synchronise after getting data from shared
29       buffer (get) as long as any change to buffer (put,recv) is between BARRIER)
30    o change tiling of natl_box (from 2 to 4 tiles) to get it tested with MPI+MTH
31      and generate new output (for the 2 tests) using default rotationPeriod.
32    o pkg/exch2:
33      - always call exch2_*_cube, not exch-1 anymore, if useCubedSphereExchange=F
34        (was already the case with AUTODIFF_EXCH2 defined)
35      - add bj in exch2 arrays and S/R.
36      - can now use pkg/exch2 for regular (non CS) set-up; switch test experiment
37        MLAdjust to exch2 (identical results except with MPI -> truncation diff);
38    o add pkg/longstep for ptracer timestep a multiple of U/V/T/S timestep
39      - adds deltaT argument to the subroutines TIMESTEP_TRACER DWNSLP_APPLY
40        GAD_ADVECTION GAD_CALC_RHS GAD_IMPLICIT_R GAD_SOM_ADVECT
41      - verification experiment natl_box.longstep
42    o build_options: ifort+mpi_aces optfile (following Constantinos advise):
43      allow different versions of ifort (8 or 9) and different versions
44       of mpi (mpich or mpich2) to be used with the same optfile.
45      requires to load a netcdf module and set MPI_INC_DIR (see comments inside
46       optfile). Change testing scripts (example_scripts/ACESgrid) accordingly.
47    o pkg/seaice:
48      fix previous modif (3-level field removed) for old-pickup reading
49    
50    checkpoint61r
51    o pkg/seaice:
52     - clean up the 3-time levels of UICE,VICE,HEFF,AREA in three steps:
53      1. introduce fields for time step (N-1)
54      2. do not use levels 2 and 3 anymore (but keep them)
55      3. replace 3D versions of UICE,VICE,HEFF,AREA by 2D versions. This
56         includes changes to pkg/thsice/thsice_get_velocity.F,
57         model/src/external_forcing_surf.F, pkg/obcs/obcs_apply_seaice.F, and
58         pkg/obcs/obcs_apply_uvice.F.
59     - completely remove code for leap-frog time stepping for second order
60       advection
61     - adjusted adjoint accordingly;
62       gradient checks have improved by an order of magnitude!
63    
64    checkpoint61q
65    o pkg/seaice: fix bug in free slip boundary conditons for LSOR solver
66     - the boundary conditions along open boundaries are unclear, because the
67       associated masks are set to zero and are thus treated as closed when
68       applying the slip-boundary conditions.
69     - move initialisation of grid variables from seaice_init_varia to _fixed
70    o adding doc/diags_changes.txt
71    o model/src:
72      do_the_model_io: rename few pkg S/R which are called from do_the_model_io,
73       to avoid "_diags" naming if no relation to pkg/diagnostics.
74      ini_theta,ini_salt: fix (at least compile the code) reading from NetCDF
75       file and only call PLOT_FIELD_XYZ if debugMode=T.
76      remove few PLOT_FIELD_XY calls outside initialisation.
77      remove few unnecessary BARRIER.
78    o pkg/salt_plume: add SaltPlumeSouthernOcean to allow disabling
79      of salt_plume package in Southern Ocean
80    o pkg/thsice:
81     - fix hOceMxL in overlap (needed for sea-ice advection);
82       update output of experiment global_ocean.cs32x15.icedyn.
83    o pkg/seaice:
84     - make the (placeholder-)tracer IceAge a little more meaningful
85      by avoiding ridging of age due to convergent ice flow
86     - add diagnostics for surface temperature, atmospheric and oceanic
87       heat flux, and atmospheric and oceanic ice growth
88    
89    checkpoint61p
90    o eesupp (global_max & global_sum):
91     - add one more element to buffer (start at index 0) for GL_MAX/SUM output;
92     - remove starting & endding barrier (no longer needed)
93    o pkg/mdsio, writelocal:
94       works also in multi-threaded when LOCBIN_IO_THREAD_SAFE is undefined
95       (remove the STOP): uses shared buffer IO to store data from all threads
96       and then let master-thread write nThreads tiles.
97    o pkg/mdsio (read/write field):
98     - tiled IO done in 1 piece (all levels at a time);
99     - new header file "MDSIO_BUFF_3D.h" with 3-D buffers.
100     - multi-threaded: allow to read/write local (non-shared) array
101       (was already working with singleCpuIO ; now works also without);
102       => no longer needs barrier call after reading a file (added inside
103       mds_read/write field).
104     - move barrier calls outside gather/scatter_2d to mds_read/write_field
105    o pkg/obcs/exf
106      - exf_getffieldrec.F: add a few ". _d 0" and
107                            add code to catch the case fldperiod = 0.  
108      - obcs_precribe_read.F: change if statements so that they match
109                              the variable type (_RL)
110      - add a separate exf_iprec_obcs to exf_set_obcs (by default equal to
111        exf_iprec) as part of namelist EXF_NML_01
112    o pkg/mdsio:
113      - read/write tiled (local) files: read/write 1-level tile chunk at a time
114        (instead of segment of length sNx); expected to speed up tiled IO.
115    o pkg/exch2:
116      - take buffer copy from/to array out of S/R exch2_send/recv into new
117        S/R exch2_put/get ; Exch of local variable now works with MPI+MTH
118        (tested by removing commom block statement in SOLVE_FOR_PRESSURE.h).
119      - ad version of send/recv no longer needed (but needs exch2_ad_put/ad_get)
120      - simplify argument list of S/R exch2_get_uv_bounds and exch2_get_scal_bounds
121        (which replaces exch2_get_recv_bounds & exch2_get_send_bounds) by
122        including Topology header file (and common blocks).
123      - implement EXCH_IGNORE_CORNERS in scalar exchange (rx1);
124        remove 2nd exch call in exch2_s3d_rx (no longer needed).
125      - document S/R arg. list (+ update some comments)
126    o pkg/seaice:
127      - added SEAICE_CLIM_AIR code, which permits modulation of surface air
128        temperature and humidity over sea ice based on climatological values.
129      - clean up computation of Hibler+Bryan (1987) stress coupling for the case
130        of LSR (this change is expected to change the results slightly because now
131        it uses slightly difference moduli from the second last LSR solution, but
132        that is more consistent with the stress computations; this part of the code
133        is not tested in the verification experiments)
134      - fix diagnostics for flux of ice in case of B-grid
135      - turn strain rates eij and press into global fields within global
136        common block in SEAICE.h for more straighforward diagnostics
137      - fix diagnostics for principal stress components, press, zeta, eta
138        to give something meaning full
139    o change tiling of global_ocean.cs32x15 (12 tiles, 32x16) and generate
140      new output (all 4 tests) using default rotationPeriod.
141    o pkg KPP:
142      - add flag (LimitHblStable) to avoid limiting BL depth under stable conditions
143      - fix vertical indices in RI_IWMIX (match between KPP grid from 0 to Nr+1
144        and normal grid from 1 to Nr)
145    o Fix computations of L4rdt in mom_calc_visc.F
146    o eesupp:
147      new S/R ALL_PROC_DIE (like EEDIE, without irrelevant threads err msg):
148      should be called before a "stop" if we know that all process are going
149      to stop; if one Proc does call this S/R, will hang in MPI_FINALISE.
150    
151    checkpoint61o
152    o pkg/exch2: change check_depths to issue just a warning (instead of error+stop)
153    o model/src/ini_curvilinear_grid.F:
154       compute angleSin/CosC when they are not read from a file
155    o pkg/seaice:
156       add pseudo time stepping for LSOR
157    o pkg/exch2:
158       temporary fix for exch2_s3d_rx; update results of exp. hs94.cs-32x32x5.impIGW
159    o pkg/seaice:
160       Adding separate sea ice albedo, drag coefficients, and HO in Southern
161       Ocean from those in Arctic Ocean.  See *_south in SEAICE_PARAMS.h
162    o SingleCpuIO:
163       fix bug put before chkp61n (May 11), when more than 2 MPI cpu are used.
164    o pkg/seaice:
165       put exchanged variable in (local) common block for MPI+Multi-Threads
166       to work (necessary with exch1, and for now with exch2 too).
167    o verification: to get more experiments tested with mpi, mth and mpi+mth,
168      change tiling of:
169       aim.5l_Equatorial_Channel, aim.5l_LatLon, dome, exp4, global_ocean.90x40x15,
170       hs94.cs-32x32x5, MLAdjust, offline_exf_seaice & tutorial_plume_on_slope
171      update output of exp:
172       exp4, global_ocean.90x40x15(+.dwslp), MLAdjust(all 5),
173       tutorial_plume_on_slope and hs94.cs-32x32x5 (use default rotationPeriod)
174      + ideal_2D_ocean: use default rotation period + test Global_Sum_SINGLECPU
175                       (note: output.txt generated on faulks using only 1 tile)
176    o eesupp & mdsio (SingleCpuIO):
177     - remove MISSING_TILE_IO (from MDSIO_OPTIONS.h), replaced by run-time
178       parameter "W2_useE2ioLayOut" (read from file "data.exch2").
179       Note: was not effective for globalFile & useSingleCpuIO=F; now fixed.
180     - move MDSIO_SCPU.h (pkg/mdsio) to EEBUFF_SCPU.h (eesupp/inc).
181     - fix GLOBAL_SUM_SINGLECPU when using Exch2; re-use same buffers and same
182       gather/scatter S/R as with SingleCpuIO (=> 1 less 2D global RL array).
183    o pkg/exch2:
184     - new code to set-up W2-Exch2 topology (replace matlab-topology-generator):
185       read parameter file "data.exch2" if it exists; otherwise try default regular
186       cube without blank-tile; new header file "W2_EXCH2_SIZE.h";
187     - update matlab-topology-generator (exch2_setup_cs6_print.m) to be compatible
188       with new code (not to be used, just as a backup solution).
189     - add examples (e.g., for lat-lon-cap_120) of parameter file "data.exch2"
190       in utils/exch2/input.
191    
192    checkpoint61n
193    o eesupp & mdsio (SingleCpuIO):
194      - move mapping to global io-buffer inside gather_2d/scater_2d: this save
195        memory (1 less 2D global RL array); skip 1 buffer copy; and only send/
196        receive real*4 array (instead of real*8) to read/write 32.bit files.
197        (new template for gather_2d/scater_2d, new set of S/R MDS_PASS_R4,8toRL,S
198         and remove new mapping S/R)
199    o pkg/mdsio: in preparation for topology-generator within pkg/exch2:
200      - Change declaration of SingleCpuIO buffer, reduced to only 1 dim.:
201        xyBuffer_size, which is set to W2_ioBufferSize from W2_EXCH2_PARAMS.h
202        when using exch2. Add S/R to map global io-buffer to global model array.
203      - uses exch2_global_Nx,y instead of exch2_domain_nxt,nyt.
204    
205    checkpoint61m
206    o write_utils : change WRITE_1D_R8 to WRITE_1D_RL
207      and add 3 other S/R for other types (R4,R8,RS).
208      Change calls to WRITE_0D/1D_R[4,8,S,L] to match the type of argument.
209    o eesupp/inc/CPP_EEMACROS.h (EXCH & GLOBAL_SUM/MAX macros):
210     - ensure suffix (_R4,_R8,_RS,_RL) correspondance between macro and S/R ;
211     - reduce number of macro definitions (keep only those which are used);
212       can always call directly the corrresponding S/R if needed.
213     - everywhere in the code: change macros (EXCH & GLOBAL_SUM/MAX) suffix
214       _R4/_R8 to _RS/_RL when applied to _RS/_RL variable.
215     Fixed wrong type of arg in:
216       atm2d/put_ocnvars.F cheapaml/cheapaml.F ocn_compon_interf/ocn_apply_import.F
217       ctrl/ctrl_map_ini_ecco.F seaice/seaice_do_diags.F seaice/seaice_model.F
218     To fix: global_sum of var in common block is wrong (multi-threaded) in:
219       dic/dic_atmos.F ebm/ebm_area_t.F ebm/ebm_zonalmean.F sbo/sbo_calc.F
220     To fix: aim_v23/aim_do_co2.F (BARRIER & GLOBAL_SUM within bi,bj loops)
221    o adjustment.cs-32x32x1: test "blank tiles" when compiling with mpi; 2nd
222      "nlfs" mpi test is going to stop when checking for unconnected tile egdes.
223    o eesupp/src: new S/R to stop everyone when 1 (or more) Proc. find an error
224    o pkg/exch2: new S/R EXCH2_CHECK_DEPTHS to check that unconnected tile
225      edges are closed (zero depth); might happen with "blank tiles";
226      for now, disabled if using OBCS.
227    o tools/gemake2: delete modifs from March 27-29 2009 (with option "-mpi":
228      link *_mpi files from "MODS" dir) to return to a strait-forward behavior.
229    o move read_write.F to write_utils.F ; new parameter (maxLengthPrt1D)
230      to reduce length of 1.D array print in STDOUT.
231    o adjustment.cs-32x32x1: changed to oceanic test with 1 continent
232      + use 48 tiles (16x8): this will allow to test "blank tiles".
233    o start to test MPI + multi-threaded (change testreport to skip tests
234      where number of tiles do not match).
235    o genmake2: add option "-omp" to turn on Open-MP ;
236      passed to testreport (if using -mth) ; merge few (*+mth) optfiles.
237    o pkg/exch2 (+ utils/exch2): ignore blank tiles (instead of removing them)
238      and keep the original tile numbering. Note: compatible with old
239      W2_EXCH2_TOPOLOGY.h & w2_e2setup.F topology files.
240    
241    checkpoint61l
242    o Overlaps had been forgotten in calculating ijk keys : fixed
243    o fix cyrus makedepend for gcc 4.4
244    o experiment fizhi-cs-aqualev20:
245      switching to new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE)
246      and generate new output. Note: new output is much closer to the old
247      one (v1.8) generated with pgf77 -O2 on Mar 14 2007 than it is from
248      the previous one (v1.9) generated with pgf77 -O0 on Jun 13 2007.
249    o pkg/fizhi:
250     - change to avoid indices going deliberately over array-bounds
251     - remove unnecessary MPI stuff
252     - perpetual spring equinox with "#define FIZHI_USE_FIXED_DAY"
253     - new version of S/R GETPWHERE available with #define TRY_NEW_GETPWHERE:
254       does not go over array-bounds and therefore returns reliable output.
255     - in fizhi_driver.F & fizhi_turb.F, fix "get_alarm" calls:
256       this S/R has 4 output arguments, which are used inside "get_alarm";
257       when it is called with the same variable "ndum" in place of several
258       output arguments, this produces weird side effect inside "get_alarm"
259      (e.g., datein=dates(n) is overwritten by timein=times(n) since both
260       datein & timein, resp. 2nd and 3rd arg., are pointed to the same "ndum"
261       address) and produces error.
262    o tools/gemake2: (March 27-29 2009)
263      with option "-mpi": link *_mpi files from "MODS" dir (this is what
264      testreport does).
265    o lab_sea experiment: change from 2x1 tiles to 2x2 tiles and regenerate output
266    o pkg/seaice: fix bug in new version of S/R SEAICE_LSR.F:
267       update lab_sea.lsr & lab_sea.salt_plume results
268    o pkg/seaice:
269      Major overhaul of the LSOR solver: change discretization from original
270      finite differences to finite volume. The old routine is still in the
271      file seaice_lsr.F and can be turned on with the CPP-flag
272      SEAICE_OLD_AND_BAD_DISCRETIZATION
273      Along with this change, the discretization of the strain rates is changed.
274      The same flag turns on the old discretization in seaice_calc_strainrates.F
275      All verification experiments with seaice are affected (except for
276      seaice_exf_offline); global_ocean.cs32x15/input.icedyn recovers the old
277      results by setting the above flag.
278      Further changes involve changes in defaults:
279      - ALLOW_FLOODING is defined and turned on by default
280      - SEAICEadvSnow = .true. is now the default
281      - SEAICEadvSalt = .true. is now the default
282      - SEAICEadvAge  = .true. is now the default
283      - SEAICE_clipVelocities  = .false. is now the default
284                                         (as per J. Zhang's recommendation)
285      - B-grid, and thus not tested: SEAICE_TEST_ICE_STRESS_1/EXPLICIT_SSH_SLOPE
286        is defined, SEAICE_TEST_ICE_STRESS_1 is renamed into SEAICE_BICE_STRESS
287      - seaice_growth: replace computation of UG by a simple copy from wspeed
288    
289    checkpoint61k
290    o pkg/seaice: a few bug fixes mostly concerning the metric terms:
291      seaice_lsr: fixed a few metric terms,
292                  affects lab_sea.lsr, lab_sea.salt_plume, seaice_obcs
293                  add more debugging diagnostics
294      seaice_evp: removed superfluous many metric terms of FV discretization
295                  of stress divergence
296                  affects lab_sea, lab_sea.hb87
297      seaice_ocean_stress: removed superfluous many metric terms of FV discretization
298                  of stress divergence for non-evp solver
299                  (this part is not tested anywhere)
300      seaice_calc_strainrates: fixed a bug in no-slip boundary conditions,
301                  they were effectively only half slip
302                  affects lab_sea.hb87
303      updated all relevant verification experiments (except lab_sea//output_adm.txt
304        which was left over, but fails at level 7 & 6)
305    
306    checkpoint61j
307    o pkg/seaice: turn a few hard wired parameters into run time parameters
308    o pkg/seaice/exf/monitor: turn netcdf coordinate variable T into model
309      time in seconds as promised by the usints in seaice_monitor and exf_monitor
310    o pkg/mnc: fix the coordinate variables for multi-tile curvi-linear grids
311      that are not cubed-sphere grids
312    o pkg/seaice: fix a bug for the rare case of SEAICE_VECTORIZE_LSR
313    o pkg/ctrl:
314      fix bug in ctrl_depth_ini.F (EXCH_XYZ was applied to 2-D field xx_r_low)
315    o non-hydrostatic (calc_gw.F):
316      fix viscA4 on CS-grid + fix diagnostics: Wm_Diss & Wm_Advec
317      update output of exp. global_ocean.cs32x15.viscA4
318    o remove backward compatibility for thetaMin,phiMin
319      (replaced by xgOrigin,ygOrigin on Jan 27, 2009)
320    o pkg/exf: fix a serious bug in exf_set_uv.F: do a rotation of the
321      interpolated wind field not only for curvilineargrid=.true., but also
322      for a rotated grid (rotateGrid=.true.)
323    o pkg/exf: add capability to bypass interpolation for runoff
324      by setting yet another CPP-flag
325    o eesupp/src, B-grid exchange:
326      add simple (6 tiles, non MPI) CS exch + standard interface S/R.
327    o autodiff
328      new CPP option ALLOW_TAMC_SINGLEPREC_COMLEV
329      allows to switch to single-prec common blocks;
330      corresponding switch occurs in tamc.h, integer isbyte
331      TAF store directivs "byte" and "kind" seem equivalent;
332      Most tamc.h have been updated correspondingly.
333    
334    checkpoint61i
335    o autodiff:
336      fix autodiff_sore/_restore indices for obcs
337      (spotted by I. Hoteit, M. Mazloff)
338    o pkg/autodiff, pkg/ctrl:
339      Add flag to reduce all tapelev I/O to single-prec.
340      In data.ctrl set
341        doSinglePrecTapelev = .TRUE.
342    o model/src/ini_curvilinear_grid.F, new grid-file format without EXCH2:
343      check in hack for SX8 compiler (for dxV, dyU); remove it afterwards.
344    o pkg/shelfice: fix bug with SHELFICEconserve flag, prepare for
345      real fresh water flux (not yet)
346    o pkg/mdsio & rw:
347     - add argument & option to S/R MDS_WRITEVEC_LOC (avoid Open/Close & write-meta)
348     - add simple interface S/R to MDS_WRITEVEC_LOC in pkg/rw: WRITE_GLVEC_RX.
349    o pkg/flt:
350     - replace FLT_INIT by 3-steps standard initialization S/R: readparms,
351       init_fixed & ini_varia.
352     - clean-up & simplify linear interpolation S/R:
353       move flt_bilinear.F -> flt_interp_linear.F ; add arg. myThid.
354     - fix some indices (mainly vertical index) ; add IMPLICIT NONE.
355     - more efficient I/O, using new options of MDS_WRITEVEC_LOC S/R.
356     - add vert. coordinate & horiz. indices to output files.
357     - change vertical position in initial condition, from index to depth [m].
358     - store horizontal (decimal) indices i,j in common block (instead of coord. x,y)
359       (easier to get to a curvilinear grid) ; delX,delY no longer used.
360    o pkg/ggl90: a few modifications:
361     - fix bottom boundary condition, and interpolation of KappaE
362       near top and bottom
363     - use same set of viscosity/diffusivity for TKE/momnetum/tracer
364     - add smoothing option as in Blanke and Delecluse (1993) (--> ALLOW_GGL90_SMOOTH)
365     - add a few options for mixing-length upper limit (--> mxlMaxFlag)  
366    o rename thetaMin,phiMin -> xgOrigin,ygOrigin
367      (maintain temporary backward compatibility, until next checkpoint)
368    
369    checkpoint61h
370    o pkg/diagnostics with "periodic averaging diagnostics":
371      fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
372    o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
373    o pkg/obcs: fix loop ranges for balancing code
374    o pkg/flt:
375     - improve criteria for finding which tile owns a float.
376     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
377    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
378      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
379      with ocean biogeo)
380    o pkg/flt:
381     - do some cleaning and fix the restart ;
382     - add output.txt in flt_example/results to get this pkg tested.
383    o genmake2: add an EXTENDED_SRC option and flag.
384       for now, cannot be turned on on command line (only through genmake_local)
385    o pkg/mdsio: read/write vector:
386     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
387     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
388       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
389     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
390      (drop to 4 digits matching for grad). But this test does not look very
391      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
392    
393    checkpoint61g
394    o pkg/flt:
395      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
396       + make OPTIONS file more standard.
397      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
398      - fix _BYTESWAPIO CPP-Flag
399      - standard reading of file-parameter "data.flt"
400      - fix argument list of S/R FLT_RESTART
401      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
402    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
403    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
404      a still unfixed compiler/optimization bug
405    
406    checkpoint61f
407    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
408      update results of global_ocean.cs32x15.icedyn test.
409    o move getcon.F from model/src to pkg/fizhi.
410    o pkg/exf: add parameter for extrapolation of temp up to the surface
411       and option to prevent negative evap (in bulk_largeyeager04 only).
412    o Prather Advection scheme: fix tracer conservation for divergent flow
413      (e.g., when using NonLin Free-Surface).
414    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
415    o gmredi (Visbeck-variable-K):
416     - add more parameters to Visbeck-variable-K.
417     - use a 5 points average for dSigmaR in Visbeck-K calculation
418       (more "homogenous": same stencil and same weights as in dSigmaH)
419     - update output of ideal_2D_oce experiment.
420    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
421      (#undef REAL4_IS_SLOW)
422     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
423       coordinate variable
424     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
425       (surface forcing fields), removes some of the functionality
426     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
427     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
428       probably not all: copy _RS surface flux fields to RL field before
429       calling DIAGNOSTICS_FILL
430     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
431       real*4 (CALL EXCH_*_RS) versions.
432     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
433       (generate new output).
434    
435    checkpoint61e
436    o gmredi (Visbeck-variable-K):
437      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
438      - change computation of Visbeck-K where Slope > Smax :        
439        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
440        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
441    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
442      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
443    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
444    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
445      does not become too large (to avoid precision problems in implicit-diffusion
446      solver); update ideal_2D_oce output.
447    o pkg ggl90:
448      - in ggl90_cal.F: compute only one set of visc/diff, used to
449        step forward TKE/T/S/momentum
450      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
451        have Prandlt =1)
452    o gmredi (fm07):
453      - add lower limit on Transition layer thickness + lower limit on 1/lambda
454      - allow to set few more params from data.gmredi
455    o pkg ggl90:
456          - add missing sqrt(2) factor in computation of mixing length
457            scale in ggl90_calc.F
458            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
459    
460    checkpoint61d
461    o adjoint modifs
462      - adapt to new field rhoInSitu
463      - allow to revert from StoreDynVars2D, StoreDynVars3D
464        to individual fields
465        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
466    o store 3-D (in-situ) density in commom block (DYNVARS.h)
467     - save 1 rho computation.
468     - no longer modify T & S inland when using down_slope pkg.
469    o gad_som : allow to switch to SOM advection for T & S without corresponding
470      pickup files (using new S/R: MDS_CHECK4FILE).
471    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
472      (for useSingleCpuIO to work in multi-threaded)
473    o pkg/shelfice:
474     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
475       with SHELFICEtopoFile in data.shelfice
476     - move code for reading ice shelf topography and modifying hFacC into separate
477       subroutines of the shelfice package
478     - separate initialisation of "fixed" and "variable" variables
479     - kTopC is not (yet) replaced by kSurfC, although this is possible
480    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
481    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
482      and rename:
483      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
484      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
485    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
486    
487    checkpoint61c
488    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
489      to add mass source/sink of fluid in the interior (3-D generalisation
490      of oceanic real-fresh water flux).
491    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
492    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
493    o new pkg: down_slope
494      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
495      - presently, modify T & S inland (dwnslp_calc_rho.F).
496        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
497      - implementation for ocean in P-coords not tested.
498      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
499    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
500      (to facilitate conversion of oceanic pkg to p-coordinate).
501    o change FIND_RHO to FIND_RHO_2D :
502      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
503    o new pkg: cheapaml
504    
505    checkpoint61b
506    o exch2:
507      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
508      - no longer depend on the order sequence (N,S,E,W).
509      - 3rd exchange no longer needed (tested with 24 tiles).
510      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
511      - exch_UV_A-grid readily available (but not yet tested).
512      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
513      (both are no longer needed) in exch_uv: no effect in forward run; but
514       get truncation error differences with adjoint exch.
515    o exch2:
516     - change index-bounds storage (moved from target to local tile,
517       more intuitive this way) ; rename/remove some variables.
518     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
519    
520    checkpoint61a
521    o exch2/matlab-topology-generator:
522      fix bug in index bounds for N-S internal exchange (hard to tell if this
523      had any effect on the solution).
524    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
525      is exceeded
526    o testreport: modify syntax of awk, so that it works also with
527      awk, and not only with nawk and gawk
528    
529    checkpoint61
530    o autodiff
531      Change default for TAF usage by removing argument '-nonew_arg'
532      This changes TAF subroutine argument list (ordering of active var.)
533      Omission of this flag leads to incompatibility w.r.t. TAMC
534      To restore TAMC-compatibility, need following modifs:
535      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
536      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
537      Tested TAF version is 1.9.22
538      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
539    
540    checkpoint60
541    --->>> This is the last checkpoint for which generating the adjoint
542    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
543    --->>> by default.
544    --->>> Future checkpoints will ommit this flag by default.
545    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
546    o pkg/grdchk: Add gradient check to etan0 perturbations.
547    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
548    o pkg/autodiff: more flexibility in zeroadj.
549      model/src: modifying do_oceanic_phys.F accordingly.
550    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
551    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
552      special setup of gmredi for which the adjoint is stable
553      enough for parameter optimization.
554    o bridging the gap between eddy stress and GM.
555      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
556          along with a change in CPP option (now ALLOW_EDDYPSI).
557      -> when using GM w/ GM_AdvForm:
558          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
559          is applied either in the tracer Eq. or in momentum Eq.
560          depending on data.gmredi (intro. GM_InMomAsStress).
561      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
562      The key modifications are in model/src/taueddy_external_forcing.F
563      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
564    
565    checkpoint59r
566    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
567      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
568      fix option to read coriolis(@ cell-corner) from files with CS-grid.
569    o pkg/mnc: add some attributes to standard 1D-coordinate variables
570    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
571      mass points, when using mnc for output
572      - add runtime parameter (missing_value, missing_value_int) to override
573        default (which is the value of getcon('UNDEF'))
574    o pkg/mnc: prepare mnc for the actual use of missing values with the
575      diagnostics package: small fix in mnc_cw_readwrite.template and more
576      initialisation of never used fields
577      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
578      versions
579    o pkg/thsice/thsice_ini_vars.F added default initial values so that
580      thermodynamics sea ice solver does not blow up when some initial fields
581      are missing.
582    o move from external_forcing_surf.F to ini_forcing.F
583      the p-coord. hack consisting in using pLoad to set phi0surf ;
584      update output of tutorial_global_oce_in_p (affected @ truncation level).
585    o Freshen up a bit hs94.1x64x5, notably:
586      remove rotationPeriod and tRef=5*0. (adjoint only), and add
587      exactConserv=.TRUE.
588    o pkg/generic_advdiff:
589      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
590      applies to files where Temperature & Salinity 2nd Order moments are used.
591    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
592      this uses a dynamically allocated internal state data structure
593      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
594      and requires a fortran 90 compiler
595    
596    checkpoint59q
597    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
598       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
599    o Refresh tutorial_global_oce_biogeo, notably:
600      - change bathymetry (put back seamounts in ACC, use hFacs)
601      - change EOS (POLY3 --> JMD95Z)
602      - use Bryan-Lewis vertical diffusivity
603      - use multidimensional advection
604      - remove old virtual virtual in dic pkg, now done through ptracer pkg
605      - change a couple of parameters in dic pkg
606    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
607    o pkg/obcs: change default to OBCSfixTopo = .true.,
608      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
609      - replace "debugMode" with "debugLevel .GE. debLevB"
610    o implementation of TAF directives for gchem,cfc,dic
611    o remove "exp5" (replaced by tutorial_deep_convection).
612    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
613      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
614      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
615      --> changes results in exp4, seaice_obcs
616    o tutorial_deep_convection :
617      update the set-up and increase resolution and domain size ; start
618      from pseudo initial conditions = output at t=120mn in order to see
619      something happening when running testreport.
620    o pkg/seaice: add os7mp as an advection scheme
621                  add check for advection schemes
622                  add a flag for restoring T and S underneath sea ice
623    o pkg/my82: add netcdf-support and diagnostics
624    o thsice pkg:
625      - Now hsMax limits snow height by turning it into ice following
626        flooding scheme (and now conserving energy)
627      - Slight rewriting of the formula in thsice_calc_thick.F
628      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
629      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
630    
631    checkpoint59p
632    o gchem / dic / cfc :
633      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
634      - add new parameter files: "data.dic" & "data.cfc" ;
635      - various re-arrangement in initialisation & header file ;
636      - fix tutorial_global_oce_biogeo for multi-threaded test.
637    o pkg/dic: test for "pickup_dic" file when restarting ;
638      if no pickup-file, can restart with a re-initialised pH (same as it did
639      before) providing pickupStrictlyMatch is set to False.
640    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
641      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
642    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
643      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
644    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
645     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
646       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
647    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
648       scheme to use for vorticty-term ;
649     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
650       (with default selectVortScheme, return to original discretisation)
651     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
652    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
653    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
654      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
655      also fix diagnostics VISCAHW & VISCA4W.
656    
657    checkpoint59o
658    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
659    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
660      move a few statemens out the main loop into separate loops
661    o pkg/shelfice:
662      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
663        (kg/m^2/s), does not break tests, because in verification/isomip,
664        rhoConstFresh=rhoConst (by accident)
665      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
666      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
667        new file model/src/seawater.F, so that they are available for all pkgs.
668      - convert potential temperature into in-situ temperature. This changes the
669        isomip tests => update tests
670    o add a flag writePickupAtEnd (default=true) to be able to suppress
671      writing a pickup at the last timestep
672    o tools/mpack-1.6 :
673      - disable automake (not working) and autoconf (not needed).
674      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
675        also cleaner with much less compilation warnings.
676    o pkg/profiles:
677      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
678      (for "less than 32 characters name" compiler requirement)
679    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
680      conditions that have a different sampling frequency than S/T/U/V obcs
681    o pkg/diagnostics (stats-diags):
682      - fix global Min/Max in case 1 processor get only empty tiles
683    o genmake2: replace (4 times)
684         make genmake_tc_1.o >> genmake_warnings 2>&1
685      with
686         COMM="$CC $CFLAGS -c genmake_tc_1.c"
687         echo $COMM >> genmake_warnings
688         $COMM >> genmake_warnings 2>&1
689      to make genmake2 always see the value of CC as specified in the optfile.
690    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
691      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
692      - modify verification advect_cs test to test SOM-advection on CS-grid.
693    o pkg/ctrl:
694      - Rewrite of ctrl_map_ini_ecco.F,
695        introducing a generic routine (ctrl_map_ini_gen.F).
696      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
697    
698    checkpoint59n
699    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
700      number in dedicate array "hdiag":
701      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
702        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
703      - many small changes (integer format) for large number of diagnostics
704      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
705        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
706    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
707      usingSphericalGrid, this allows to define the rotated grid coordinates
708      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
709      geographical coordinates according to the inverse of the rotation defined
710      by the Euler angles, so that Coriolis parameter and online-interpolation by
711      exf works with the geographical coordinates on XC/YC/XG/YG.
712      Naturally, this feature does not work with all packages, so some
713      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
714      profiles), because there the coordinates are assumed to be regular
715      spherical grid coordinates.
716    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
717      - introduce isopycnal diffusion coefficient control.
718    o tools/adjoint_options:
719      - additional control vector components.
720    o pkg/mnc: have mnc create marginally meaning full coordinate variables
721      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
722    o pkg/mypackage:
723      - add example of read/write pickup for state-var ;
724      - add entry points to the main code for state-vars diags & write-pickup.
725    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
726      transitions for useExfYearlyFields
727      - add new subroutine that determines the file to read from for
728        use*YearlyFields = .TRUE. and .FALSE.
729      - add a verification experiment to global_with_exf that tests
730        useExfYearlyFields with USE_EXF_INTERPOLATION defined
731    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
732      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
733      subroutines (which could be generated from a template, because they are
734      almost identical), for now they are included in obcs_prescribe_read.F for
735      simplicity
736    o pkg/exf:
737      - add a little more diagnostic to exf_interp_read (in analogy to
738        mds_read_field, can be turned off with debugLevel < debugLevA=1)
739      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
740        ugly but fast by unrolling short inner loops, inserting a unroll=8
741        directive in routine lagran, and splitting a loop and making do while the
742        outermost loop (the latter requires the intoduction of index arrays)
743    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
744    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
745      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
746    o verification/seaice_obcs: updated for restart test and latest options
747    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
748      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
749      for now this is only available for the C-grid code and also within
750      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
751    
752    checkpoint59m
753    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
754      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
755    o gad_som : fix flux output (& diagnostics) to have same units as other  
756      advection scheme fluxes (was previously multiplied by deltaT).  
757    o added verification/seaice_obcs both to test seaice open boundaries
758      and to provide an example matlab scrpt for generating them
759    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
760    o pkg/salt_plume: clean up salt_plume_frac.F to
761      remove redundancy in PlumeMethod 1 and 4
762    o pkg/kpp: added saltplume diagnostics
763    o pkg/obcs and pkg/seaice:
764      - do not set uice and vice to zero when OB*icefile are unspecified
765      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
766      - moved seaice tracer obcs after call to seaice_growth
767    o pkg/salt_plume: added various options for salt plume depth
768      criterion and for vertical distribution of the salt
769    
770    checkpoint59l
771    o pkg/ptracers: new version of ptracers pickup:
772      read meta file and write only fields which are needed to restart.
773      ( same logic as main pickup file ; also using pickupStrictlyMatch )
774    o pkg/seaice:
775      - add timescale for melting due to warm mixed layer as a means of
776        setting SEAICE_availHeatFrac more conveniently
777      - add a CPP-flag/runtime parameter check for flooding algorithm
778      - reformulated availHeat in seaice_growth.F to be independent of AREA
779    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
780      unit changes
781    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
782    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
783      SX vector computer.
784    o pkg/seaice:
785      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
786        seaice forcing fields can now be read only through pkg/exf
787      - removed some unused halos
788    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
789    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
790      or U/VICE from U/VWIND before computing U/VSTRESS
791    
792    checkpoint59k
793    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
794      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
795    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
796      all experiments pass when compile with un-initialised var. checking option.
797    o added pkg/salt_plume
798    o script to test restart (for now, in MITgcm_contrib/jmc_script)
799    o pkg/seaice: new read/write pickup version.
800      read meta file and write only fields which are needed to restart.
801      ( same logic as main pickup file ; also using pickupStrictlyMatch )
802    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
803    o lab_sea.hb87: modify the domain & update output.hb87.txt :
804      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
805      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
806      process. Fixed here by closing the domain at the Northern boundary.
807    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
808    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
809      a set of consecutive levels in/from a 3-D array.
810    o pkg/ptracers:
811      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
812      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
813    
814    checkpoint59j
815    o in pkgs: dic, obcs, offline, rbcs:
816      standard way to compute coeff. for time interpolation between 2 time reccords
817      which retains full precision (& make results less dependent on compiler).
818      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
819    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
820      packages instead of reading ice cover and wind speed separately
821    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
822     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
823      to allow to compile customized code before the update)
824    o cleaning-up:
825      - fix CPP instruction syntax in pkg/obcs
826      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
827        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
828      - fix some threads issue in IO parts.
829    o pkg/dic:
830      - add tons of "_d 0" (--> much better testreports !)
831       and then update outputs of tutorial_global_oce_biogeo
832    o pkg/mom_fluxform:
833      add a special version of momentum advection intended to conserve momentum
834      next to a bathymetry step or a coastline edge. (default = off = #undef)
835    o new read/write pickup version:
836      - for now, only implemented for main (mdsio) pickup file.
837      - write out only what is needed to restart; merge pickup_nh , pickup_ph
838        and main pickup together.
839      - read meta file; read only what is needed to restart; stop if a field
840        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
841        if it make sense (even if the restart is not perfect).
842      - if no meta file, assume that pickup to read corresponds exactly to
843        a pickup that would currently be written.
844      - read pickup written in the old format (until checkpoint59i) if it
845        recognizes an old meta file (no field-list).
846      - add a meta file in exp. which starts from a pickup: 2 cases:
847        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
848         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
849        b) a meta file describing the content of the associated pickup file
850         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
851    o pkg/mdsio & pkg/rw:
852      - new routine to read a meta file ; new set of routine to read
853        Multiple-fields file (with meta file).
854    o added open boundary conditions capability for seaice
855        HSNOW, HSALT, UICE, and VICE
856    
857    checkpoint59i
858    o adjoint:
859      * fix multiDimAdvection adjoint
860        (partial recomputation problem by TAF for fVerT(:,:,kDown)
861        and comlev1 size definition (maxpass vs. max. number of tracers)
862      * verification/global_ocean.90x45x15 adjoint now tests
863        NLFS and multiDimAdvection using DST3 (=30)
864      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
865    o pkg/kpp: add "_d 0" to real constant (if missing);
866      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
867      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
868    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
869      for internal parameters related to restart process (formerly from PARAMS.h)
870      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
871    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
872      as argument. (only atm2d & obcs write_pickup have not yet been updated)
873    o pkg/monitor:
874      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
875      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
876      - account for deep Atmosphere factor and density factor (anelastic)
877    o added open boundary conditions capability for seaice HEFF and AREA
878    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
879      thermodynamics
880      - requires a little reorganization, which affects the testreport results
881        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
882        so that now the conservative form is tested
883      - add a few comments
884    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
885    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
886    o add new diagnostics to seaice: advective, diffusive fluxes (only for
887      multidim-advection, for scheme 2 they are not filled) and transports,
888      thermodynamic growth rates
889    o change units of EmPmR (inside the code, + within coupling interface)
890      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
891      Affects results @ truncation level (cg2d match) and update output of
892       experiments: lab_sea(6), global_ocean.90x40x15(10),
893      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
894      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
895      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
896      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
897    
898    checkpoint59h
899    o pkg/exf:
900      - improve vectorization by moving if-statement out of loops in
901        exf_mapfields, exf_radiation
902      - exf_bulkformulae.F: introduce 2D fields and vectorize code
903    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
904    o testreport:
905      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
906        monitor & update offline_exf_seaice exp. output.
907      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
908    o pkg/seaice:
909      - bug fix in the evp solver: boundary conditions were affected be
910        masking of zMax/zMin (changes results)
911      - minor bug fix in boundary conditions in seaice_calc_strainrates
912        (changes results for no_slip)
913      - seaice_lsr.F: make interpolation of eta dependent on boundaries
914      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
915      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
916        stress formulation and no-slip boundary conditions
917    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
918      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
919    o pkg/seaice: a first HSALT time stepping equation has been checked in
920    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
921      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
922      without requiring DO-IF statements
923    o pkg/thsice:
924      use continuous power-law function for partition of energy between lateral
925      melting/freezing and thinning/thickening ; old code using step function
926      still available with #undef THSICE_FRACEN_POWERLAW
927      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
928    o testreport: change AD testing : check against results/output_adm.txt
929      using same scripts as for forward test.
930    
931    checkpoint59g
932    o adjoint testing: in preparation for changing testreport:
933      - output format: cost and grad written on separated lines
934      - ad output results in directory "results" (instead of "results_ad")
935    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
936    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
937    o pkg/ecco: allow user defined cost function contributions
938    o testreport:
939      Allow to choose (per experiment) the list of tested output variables
940       and the main variable (used to issue a pass/FAIL ) ;
941      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
942      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
943      Also modify printing of summary:
944       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
945       b) echo the list of tested variables in the individual summary.txt of
946          each experiment.
947    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
948      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
949      (but still depend on the tile decompostion of the domain).
950    o pkg/seaice: change a discretization detail to make the B-grid code
951      "more symmetric". This change is likely to remove all "ridges/leads" that
952      where quasi-aligned with the grid in B-grid solutions. It may also be
953      the solution to the stress coupling issues with the B-grid.
954    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
955      remove .cvsignore from input dir. (since testreport no longer run here).
956    o pkg/thsice:
957     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
958     - fix reshaping of sea-ice just after advection:
959       melt all the ice only if ice-volume is too small.
960     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
961       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
962     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
963    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
964      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
965    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
966      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
967      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
968      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
969      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
970      -> update output.txt
971    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
972     this affects truncation error: -> update output.txt of exp:
973      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
974      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
975    
976    checkpoint59f
977    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
978    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
979      a bounded range (in forward mode)
980    o pkg/ecco, ctrl, autodiff and mom_common:
981     internal parameter controls, completements of implementations
982    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
983    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
984      (not seem any difference in testing results).
985    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
986       at face corners.
987    o pkg/generic_advdiff:
988     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
989      loop range indices for computing vertical advection tendency
990      and do the calculation in the interior only (no overlap) ;
991      for now, only implemented for SOM advection (to save CPU time).
992     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
993    o exch2 adjoint
994      First set of changes:
995      - add exch2 hand-written adjoint templates
996      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
997        This will require cleanup in pkg/autodiff/*.F
998        (changed routines currently kept separate in verif. code/)
999      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
1000        that used to hide exch2 or cubed-sphere specific code
1001        (commented via 'cph-exch2')
1002    o pkg/seaice
1003      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
1004    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
1005       output of global_ocean.cs32x15.thsice .
1006    
1007    checkpoint59e
1008    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
1009      for B-grid vector (not yet tested) and C-grid vector (<- only used
1010      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
1011    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
1012      (#ifdef ALLOW_SALT_PLUME)
1013    o gather_2d/scatter_2d: removed halo regions
1014    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
1015      scheme and the corresponding test case (under front_relax dir). For now,
1016      only available with Skew-flux form and not yet tested in realistic set-up.
1017      adjoint: store directives updated, but gradient checks deteriorated,
1018      so maybe GM/Redi adjoint is now broken.
1019    o seaice adjoint
1020      * add AREA, HEFF, HSNOW as control variable
1021        (should not change lab_sea results)
1022      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
1023    o pkg/seaice:
1024      * added computation of saltFlux in seaice_growth;
1025        For time being, sea ice salinity is assumed constant
1026        contribution of snow flooding to freshening of sea ice is neglected.
1027        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
1028        defaults to 0.0 in order to maintain backward compatibility.
1029        Typical values for SEAICE_salinity are 4 to 10 g/kg.
1030      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
1031      * added SEAICE_availHeatFrac, which specifies fraction of surface level
1032        heat content used to melt or grow ice
1033      * commented out cap of HICE: it helps keep ice thinner
1034      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
1035      * applied OBCS T/S mask to HEFFM sea ice mask
1036    
1037    checkpoint59d
1038    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
1039     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
1040     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
1041    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
1042     and change default value of parameter "GM_Small_Number";
1043     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
1044       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
1045       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
1046    o pkg/ecco: cost function when applying pkg/smooth to controls
1047    o pkg/ctrl: add forcingPrecond run time parameter
1048    o pkg/seaice:
1049     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
1050     - fix bug in metric terms of u-equation in LSR solver (implicit part),
1051       changes verification/lab_sea
1052     - rearrange implicit part of u-equation in LSR solver to make it easier to
1053       read, understand, and debug. This causes changes at the truncation level.
1054     - fix (serious) bug in the boundary conditions (sign error in the implicit
1055       part) of the LSR solver. Changes all LSR results.
1056     - fixed problem with HSNOW initialization to avoid thick snow when AREA
1057       is initilized with small values - does not change lab_sea results.
1058     - added HsnowFile initialization capability
1059    o pkg/smooth: addition to model/src and pkg/ctrl so allow
1060     initialization of pkg/smooth and application to control vector
1061    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
1062    o dependencies: pkg/profiles requires pkg/cal
1063    o pkg/profiles:
1064     - added option ALLOW_PROFILES_GENERICGRID
1065         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
1066         that interpolation information (grid points and coefficients) is provided
1067         within the netcdf input files.
1068         -> sample matlab scripts can be found in MITgcm_contrib/gael
1069         that allow you to prepare netcdf input files.
1070     - also modified: cleaner include statements, cleaner error print statements,
1071       cleaner stops when error, and more tests of the netcdf input files consistency.
1072    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
1073    o pkg/seaice:
1074     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
1075       requires a new routine: seaice_diagnostics_fill.F
1076     - make sure that seaice does not move if not forced (pressure replacement
1077       method, Hibler and Ip, 1995), changes results
1078     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
1079     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
1080       It is turned off by default (=-1.), because it changes the results.
1081     - make it possible to read AREA from a file, too.
1082    
1083    checkpoint59c
1084    o add S/R and diagnostics for oceanic mixed-layer depth
1085    o move GMRedi call after all vertical mixing schemes (including KPP)
1086    o pkg/thsice:
1087     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
1088      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
1089    o pkg/obcs:
1090     - bug fix for balance code
1091    o pkg/seaice:
1092      - allow values of SEAICE_elasticParm > 1
1093      - add new parameter SEAICE_evpTauRelax as an alternative
1094        to SEAICE_elasticParm
1095      - make lsr boundary conditions free slip (by default), changes result
1096      - add code for no slip boundary conditions for lsr
1097      - set minimum of zeta to zero (and not 4e8) (changes results)
1098      - add a cap on AREA after advecting AREA if seaice_growth is not called
1099    o change calculation of Visbeck K:
1100      - no longer depend on tapering scheme; instead, compute slope (limited
1101        by GM_maxSlope). this is equivalent to what was comuted before with
1102        clipping or linear tappering.
1103      - fix vertical averaging (wrong by 1/2 level)
1104      - leave the old version (but will not be maintained) within
1105        #ifdef OLD_VISBECK_CALC / #endif
1106      - update output of exp. ideal_2D_oce
1107    o change error catch in calc_r_star to improve vectorization
1108    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
1109      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
1110    o adjoint:
1111      Re-organized adjoint checkpointing according to Matt Mazloff
1112      (but with modifs/completions/cleanups)
1113      Storing is now bundled into large arrays to optimized I/O
1114      (and second step in cleanup of the_main_loop)
1115    
1116    checkpoint59b
1117    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
1118      - export/import (between ocean & coupler) fields needed for ocean DIC.
1119    o pkg/seaice:
1120      - get rid of three more exchanges seaice_calc_viscosities (required
1121        different loop boundaries in seaice_lsr and seaice_ocean_stress)
1122      - bug fix in seaice_ocean_stress (update of lab_sea required)
1123      - reduce loop boundaries to necessary minimum also in seaice_evp
1124      - go back to the old way of computing deltaC/Z as the adjoint likes that
1125        better
1126    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
1127      passive tracer to an Age Tracer) + update output.txt
1128    o pkg/exf:
1129      - implement A-grid / C-grid selection for wind-stress input files.
1130      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
1131      for now, in exf_bulk_largeyeager04.F only :
1132      - change implementation for case where windspeed + 2. components wind-stress
1133        are read-in. AND use rhoConstFresh to convert evap.
1134    o pkg/seaice:
1135      - use correct EXCH_UV for wind-forcing (on A-grid).
1136      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
1137        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
1138    o pkg/exf:
1139      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
1140      EXF_INTERPOLATION:
1141      - merge global_with_exf/code version of exf_interp_read.F
1142        to the main code ;
1143      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
1144        reading the file ; Important: This options needs to be defined to recover
1145        previous code.
1146        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
1147      - no longer loose real*8 precision along the way when using exf_iprec=64.
1148    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
1149      - change discretisation of evp-solver in order to avoid another exchange
1150        (changes lab_sea) and clean up a little
1151      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
1152        help the adjoint (this also changes the results slightly)
1153      - add a few "_d 0" where they had been missing in seaice_evp.F
1154      - cleaning up: remove unused seaice_calc_rhs.F
1155    o pkg/exf: some cleaning-up:
1156      - change various "constants" into runtime parameters
1157      - cleaned-up Large&Yeager04 routine which should eventually
1158        replace exf_bulkformulae.F (changed names of S/R and CPP)
1159        and merged various ALLOW_ATM_WIND options
1160     only used with thsice pkg (in thsice_get_exf.F):
1161      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
1162        which are used when useStabilityFct_overIce=TRUE (= the default)
1163      - change default values of ice & snow emissivity and scale downward LW
1164        by ice & snow emissivity.
1165    o pkg/thsice:
1166     fix few little problems, in thsice_calc_thickn.F:
1167      - growth vertically (and not laterally) if iceFrac == iceMaskMax
1168      - melt only laterally if hIce < hThinIce (as the comments say)
1169      and in thsice_extend.F:
1170      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
1171      - start to form ice as soon as the minimum ice-volume is reachable.
1172     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
1173      and cpl_aim+ocn
1174    o pkg/kpp
1175     - move computation of surface related input fields to KPP into a new
1176       subroutine kpp_forcing_surf.F
1177     - remove wrong (within bi,bj loops) EXCH calls.
1178     - little cleaning (add argument myThid in last position, cvs header ...)
1179     - for now, fix conservation problem by exchanging KPPviscAz (may not
1180       be the best fix)
1181    o pkg/seaice
1182     - check for inconsistent evp parameter/cpp-flag combination
1183     - remove leftover errIO flat for obsolete name list error handling
1184    o OpenAD
1185     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
1186    
1187    checkpoint59a
1188    o pkg/seaice: some parameter clarifications and a little bit of clean up
1189    o pkg/thsice: rename run-time parameters:
1190       himin       -> hIceMin
1191       himin0      -> hThinIce
1192       hihig       -> hThickIce
1193       i0          -> i0swFrac
1194       transCoef   -> bMeltCoef
1195       frac_energy -> fracMelting
1196      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
1197       with default values (for now) that do not change the results.
1198      remove old version of thsice vars advection in pkg/seaice.
1199    o in FFIELDS.h:
1200      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
1201      - make pLoad & sIceLoad always available (but still only used if
1202         ATMOSPHERIC_LOADING is #define).
1203    o pkg/kpp: replaced _KPP_RL with _RL
1204    o bug fixes for vertical diffusivity computations when both KPP and
1205        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
1206        are no longer updating the vertical diffusivity array
1207        (passed as argument) but are (re-) setting those arrays.
1208    o pkg/seaice: fix bug in evp solver, while doing that
1209      - change (improve?) discretization of stress computations for both
1210        cgrid-lsr and evp solver
1211      - add a new routine to compute strain rates
1212      - the above changes lab_sea results
1213      - add no slip conditions for evp solver (off by default), lsr-version
1214        may follow
1215      - fix exchange for shear at Z-points (does not change lab_sea)
1216      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
1217        (to force the user to pick a time step since there is not "safe" way
1218        of choosing it)
1219      - add principal stress diagnostics
1220      - rearrange fields for evp a little to avoid having to call a: too many
1221        exchanges and b: exchanges for stress trensor components which we do
1222        not have.
1223      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
1224        of evp, complete rewrite for lsr case (latter is does not yet work
1225        in all cases)
1226    o pkg/kpp: add code to have mixing in shelf ice caverns
1227      - add myThid to all kpp routines (long overdue)
1228    
1229    checkpoint59
1230    o pkg/exf:
1231      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
1232        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
1233      - move exf header files from lower_case.h to UPPER_CASE.h ;
1234        add missing cvs Header & Name
1235      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
1236      - add namelist param. selectStressGridPosition, exf_monFreq
1237      - retire many _CLIM routines, and remove data.exf_clim
1238        + params moved to data.exf
1239        + climsst, climsss now handled by exf_set_gen, i.e.
1240          climss?period=0 refers to constant field,
1241          climss?period=-12 to monthly forcing
1242      - split up namelists in data.exf
1243    o pkg/seaice:
1244      - remove seaice_exch and seaice_exch_uv
1245      - remove superfluous exchange of theta
1246      - add myThid to seaice_budget_ocean/ice
1247      - add new interface for atmospheric wind forcing (C-grid only)
1248        + new routine
1249        + two new field (taux, tauy for stress over ice)
1250        + removed one global field (DAIRN) for C-grid case only
1251    o pkg/thsise
1252      - 2nd set of modifs for thsice adjoint in conjunction with exf
1253    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
1254    
1255    checkpoint58y_post
1256    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
1257      vertical diffusivity, similar to that in MOM4; turned on using
1258      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
1259      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
1260    o Added capability for 3D specification of background vertical diffusion
1261      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
1262      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
1263      "data" file that contains the 3D vertical diffusivity coefficients.
1264    o ice dynamics (pkg/seaice) with thsice thermodynamics:
1265      - add code within pkg thsice to advect & diffuse sea-ice fields
1266      similar to (and will replace) what has been added in  seaice_advdiff.F,
1267      but: - conserving Mass, Heat & Salt.
1268           - better when using non-linear advection scheme (not yet fully tested)
1269           - can also be used in atmospheric set-up (for now, only the diffusion).
1270    
1271    checkpoint58x_post
1272    o IO option for global-file compact format:
1273      - add options when generating topology (utils/exch2/matlab-topology-generator)
1274      - add I/O capability (pkg/mdsio).
1275      - adapt utils/matlab/rdmds.m to read this format.
1276      for now long-line format not yet supported by pkg/mdsio (& exch2).
1277    o shelfice: add a few diagnostics
1278    
1279    checkpoint58w_post
1280    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
1281      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
1282      (and replace horiVertRatio in NH code).
1283      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
1284                         and tutorial_plume_on_slope (sensitive to truncation)
1285    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
1286      directly to drive seaice model (C-grid only)
1287    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
1288     - reintroduce computation of wind from stress,
1289     - compute tau (in exf_bulkformulae.F) from windstress averaged to
1290       mass points to avoid tau = 0
1291     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
1292    o rdmnc.m: make it work with "global" files created with gluemnc
1293    o rdmnc.m : some improvements in dealing with singleton dimension
1294      (tested on all testreport mnc output files).
1295    o genmake2: disable pkg/profiles if netcdf test fails.
1296    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
1297    o move call to cal_readparms up to make calendar parameters/variable available
1298      to all packages
1299    
1300    checkpoint58v_post
1301    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
1302      useDynP_inEos_Zc tested.
1303    o pkg/exf: changes to properly interpolate/mask/scale initial fields
1304    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
1305      and portions thereof.  See read_cs.txt for description and examples.
1306    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
1307      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
1308      following the great-circle arc between those 2 points.
1309    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
1310      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
1311    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
1312     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
1313     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
1314     - still needs work (not working with some options ; efficiency to improve)
1315       and serious testing.
1316     - use this scheme for temperature & salinity in 2 advection test exp.:
1317       advect_xy & advect_xz, respectively.
1318    
1319    checkpoint58u_post
1320    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
1321    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
1322    o testreport: add option "-skipdir" to skip some test.
1323    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
1324      momentum calculation.
1325    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
1326    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
1327      remove checkpoint.F and the_correction_step.F (no longer used);
1328      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
1329    o add option (linFSConserveTr) to correct for tracer source/sink due to
1330      Linear Free surface
1331    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
1332    o pkg/thsice: fix reading mnc-pickups
1333    
1334    checkpoint58t_post
1335    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
1336    o pkg/mdsio:
1337     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
1338       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
1339       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
1340     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
1341     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
1342       either MDS_READ_FIELD or MDS_WRITE_FIELD )
1343     - new S/R (to replace MDSWRITEMETA), which allows to write more
1344       informations (variable names, time ...) to meta files.
1345     - modify rdmds.m to give back the meta file content.
1346    o pkg/diagnostics: change vertical interpolation to be safer, and more
1347       flexible (define p-levels to interpolate to in data.diagnostics);
1348      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
1349       diagnostic pointer.
1350    o pkg/seaice: more cleaning up of seaice_growth, added many comments
1351    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
1352    o fix multi-category seaice:
1353     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
1354       SEAICE_MULTICATEGORY
1355     - fix short wave heat flux
1356    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
1357       and allow to use EVP solver. Change forward lab_sea: test both EVP
1358       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
1359    o Initial check-in of lab_sea adjoint
1360      (very similar to natl_box_adjoint/code_seaice)
1361      * used C-grid and EVP solver
1362      * used KPP, GM/Redi
1363      * uses inAdExact=.TRUE.
1364      * gradient checks fail for both ADM and TLM
1365        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
1366        f.d. gradients actually seem more problematic than ADM, TLM gradients;
1367        issue is related to forward mismatch between g77 an ifort
1368    o pkg/seaice: overhaul of thermodynamics
1369     - growth.F and groatb.F are replaced by new routine seaice_growth.F
1370     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
1371     - move a few global fields out of SEAICE.h into seaice_growth.F and
1372       make them 2D (FICE/QNETO/ ...)
1373     - remove FO (it is the same as QNETO)
1374     - introduce a few local fields to avoid modifying external fields such
1375       as atemp, etc.
1376    
1377    checkpoint58s_post
1378    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
1379      changed exf_set_gen.F so that
1380        genperiod=0 means input file is one time-constant field and
1381        genperiod=-12 means input file contains 12 monthly means
1382    o CG2D: use pre-computed solver main-diagonal (stored in common block);
1383      this affects truncation error ; generate new output file for exp. which
1384      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
1385        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
1386        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
1387        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
1388        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
1389        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
1390    o start implementation of deep-atmosphere and anelastic formulation
1391    o verification: remove 2nd copy of input files and use script "prepare_run"
1392      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
1393    o mom_common/vecinv/fluxform: fix a few initialisation isssues
1394    o profiles: fix for multithreaded case
1395    
1396    o diagnostics: rename few diags:
1397      s/'PRESSURE'/'RCENTER '/g
1398      s/'TICE    '/'oceFreez'/g
1399      s/'TAUX    '/'oceTAUX '/g
1400      s/'TAUY    '/'oceTAUY '/g
1401      s/'SWFLUX  '/'oceQsw  '/g
1402      s/DIFx/DFxE/g
1403      s/DIFy/DFyE/g
1404      and add few ocean-forcing diagnostics:
1405      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
1406    o modifications to pkg/seaice/growth.F and budget.F, which change results of
1407      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
1408      as actual snow thickness.  It now refers everywhere to effective snow
1409      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
1410    
1411    checkpoint58r_post
1412    o modifications to pkg/seaice/growth.F, which change results of
1413      lab_sea experiment: fixes pertain to melting snow over open water, to
1414      masking EVAP under sea ice, and to using the correct AREA variable for
1415      computations of EVAP, PRECIP, HSNOW, and GHEFF
1416    o add ability to read bathy, salt, and theta using MNC (off by def)
1417    o add flooding algorithm and advection of HSNOW for pkg/seaice;
1418      both are turned off by default and do no change any results
1419    o seaice advection with pkg/thsice: a step toward the use of non-linear
1420      advection scheme, but #ifdef or commented out for now (requires more EXCH).
1421    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
1422      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
1423      in natl_box (affects results @ truncation level: update output.txt)
1424    o multi-threading and IO:
1425      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
1426      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
1427        (needed to work with SingleCpuIO): tested in all verif. exp.
1428    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
1429      affects the results (but none of the verification test uses this scheme).
1430    o Adding some pkg/diagnostics capability to pkg/seaice
1431      (will certainly be subject to changes)
1432    o ctrl: adding new control variables:
1433      lwflux, lwdown, evap, snowprecip, apressure, runoff
1434    
1435    checkpoint58q_post
1436    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
1437      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
1438      high_res_cube configuration by 4% on Columbia.
1439    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
1440      add (in global_with_exf/code) a version of EXF_INTERP_READ without
1441      dynamical allocation (seems to work in multi-threaded).
1442    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
1443      single CPU io) so that TAF does not have to see EESUPPORT.h
1444    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
1445    
1446    checkpoint58p_post
1447    o obcs: stop if obcs is used with useCDscheme = .true.
1448    o shelfice:
1449     - fix a sign error so that no slip at shelfice interface works
1450     - remove stop for combination non-hydrostatic code and shelfice. That does
1451       not mean, that the results are correct, but at least they are numerically
1452       stable
1453    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
1454    o added adjoint exch routined for all exch*3d* routines
1455      and updated flow directives
1456    
1457    checkpoint58o_post
1458    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
1459      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
1460    o change controling S/R for writing pickup file (new S/R do_write_pickup)
1461      and clean-up reading/writing of pickup files.
1462    o fix local version of read/write pickup (NH part) in rotating_tank/code
1463    o simplify EXCH interface:
1464     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
1465     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
1466    o added the regrid package
1467    o shelfice:
1468     - add a simple boundary layer scheme to reduce noise
1469     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
1470    
1471    checkpoint58n_post
1472    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
1473       local variable (not in common block).
1474    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
1475      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
1476      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
1477        to work with SingleCpuIO.
1478    o add "_d 0" to real constant of pkg/cfc subroutines ;
1479       update exp. cfc_exemple & tutorial_cfc_offline output files.
1480    o multi-threading and IO:
1481      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
1482        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
1483      - barrier before and after reading.
1484      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
1485      - avoid using MDS_WRITELOCAL for LAND pkg output.
1486      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
1487        common-block variables ; Allows multi-threading with master-thread IO.
1488    o change default MAX_NO_THREADS from 32 to 4 ;
1489      and stop cleanly when MAX_NO_THREADS is too small.
1490    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
1491    
1492    checkpoint58m_post
1493    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1494       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1495    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1496       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1497       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1498    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1499        add MITgcm_tutorials (= code + all the tutorials)
1500    o ecco, option to compute cost for total ssh (mean+anom)
1501    o consistent with addition of ptracer and ssh in pkg/profiles
1502    o profiles: adding ptracer and ssh
1503    o testreport: change multi-test output-file name
1504      (from output.txt.{name} to output.{name}.txt)
1505    o profiles: now ok for mutli-tiles case
1506    o seaice: add 4 parameters for different advection schemes for area,
1507      (effective) seaice thickness, enthalphy, and snow height. Their default
1508      is the standard parameter SEAICEadvScheme
1509    o calc_gw:
1510     - add cosFacU in zonal viscous flux (harmonic.visc.).
1511     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1512       of tutorial_plume_on_slope.
1513    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1514    o calc_gw: true flux-form, account for horizontal grid spacing.
1515      update rotating_tank results, but not plume_on_slope (affected at
1516      truncation level, 11 digits).
1517    
1518    checkpoint58l_post
1519    o calc_gw:
1520     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1521     - remove side-drag for now (need to fix it); update plume_on_slope results.
1522     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1523    o commit code to make SST/SSS weights spatially variable
1524      (based on either variable in-situ or variable initial T/S weights)
1525    o pkg/ecco:
1526      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1527        now based on horizontally varying weights wthetaLev, wsaltLev
1528      * cost_averagesflags now returns year indices in addition to day, month
1529      * sflux balance is performed on annual basis
1530        (sflxumm, sfluxmm2, bal_sfluxmm)
1531      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1532        including separate counting and multipliers
1533    o pkg/rbcs
1534      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1535    
1536    checkpoint58k_post
1537    o testreport:
1538     - always build in dir. "build" (if not there, mkdir build instead of building
1539       & running in input)
1540     - run in dir run (if it exists), in build otherwise.
1541     - call prepare_run (if input/prepare_run exists)
1542     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1543    o pkg/exf modifications to interpolation and rotation routines for more
1544       reasonable treatment of North Pole singularity: for tracers North Pole
1545       value is set to northernmost zonal-mean value, for zonal velocity it is
1546       set to zero, and for meridional velocity it is set to northernmost value.
1547    o pkg/exf/exf_check_range.F
1548     - add tile index to diagnostics and move stop statement to the very
1549       end of the routine.
1550    o pkg/diagnostics: (diagnostics_main_init.F)
1551      define title of isomorphic variables according to the current config.
1552    o pkg/thsice with pkg/seaice dynamics:
1553    - fix domain of computation (interior only, required for exf) and do exchanges
1554    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1555    o towards a standard way of dealing with multi-threading in MONITOR
1556      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1557    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1558       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1559    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1560    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1561    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1562       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1563    o tracer advection:
1564     - clean-up and simplify calc_common_factors.F
1565     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1566       advection subroutine (but still not used within DST advection S/R)
1567    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1568    
1569    checkpoint58j_post
1570    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1571      from file (collects calls previously in FORWARD_STEP)
1572    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1573    o adjoint store dir. adjusted accordingly
1574    o genmake2
1575      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1576    
1577    checkpoint58i_post
1578    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1579      on wind stress (SEAICEstressFactor defaults to 1.)
1580    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1581      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1582    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1583      on CS-grid: no longer loosing mass.
1584    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1585    o pkg/ggl90: fix sloppy output and fix a bug
1586    o pkg/seaice: added SEAICEuseEVPpickup parameter
1587      - Set to false in order to start EVP solver with
1588        non-EVP pickup files when using SEAICEuseEVP
1589      - fix sign error in diffusion in seaice_calc_rhs
1590    
1591    checkpoint58h_post
1592    * Modifications for bottom topography control
1593      o replace hFacC by _hFacC at various places
1594      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1595      o add non-self-adjoint cg2d_nsa
1596      o update autodiff support routines
1597      o re-initialise hfac after ctrl_depth_ini
1598      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1599    * Adding verification for 5x5 box (4-layer) bottom topography control
1600    
1601    checkpoint58g_post
1602    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1603       used for mean seasonal cycle, mean diurnal cycle); add an example
1604       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1605    o pkg/ggl90:
1606      - add parameter (minimum surface kinetic energy)
1607      - fix bug (avoiding division by zero)
1608    o couple pkg/thsice to pkg/seaice:
1609      - modify advection in seaice to accomodate new scalar fields to be advected
1610      - only muliDimAdection scheme work with seaice/thsice
1611      - mapping of thsice-variables to seaice-variables, back and forth
1612      - does not break the verification experiments, but does not give the
1613        desired results either
1614    o pkg/seaice
1615      - make (default) second order advection a bit less confusing?
1616    
1617    checkpoint58f_post
1618    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1619      to pkg/seaice):
1620      - new routines thsice_map_exf and thsice_get_exf provide the interface
1621      - add an additional formal parameter to thsice_solve4temp
1622    o pkg/exf:
1623      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1624      - correct Stefan-Boltzmann constant
1625      - new parameter for longwave surface emittance
1626      - separate some stuff from exf_bulkformulae into new routines  
1627        exf_radiation, exf_wind
1628      - add new parameters and constants: longwave emissivity for ocean, ice
1629        and snow, evaporation parameters over ice
1630      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1631        either wind from stress or stress from wind
1632    o pkg/thSIce:
1633    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1634    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1635       and THSICE_CALC_THICKN
1636    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1637    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1638      to make debugging easier.
1639    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1640    o pkg/bulk_force:
1641      - clean-up comments and parameters ;
1642      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1643    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1644      generate new output for test-experiment: aim.5l_cs.thSI
1645    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1646      testreport accordingly
1647    
1648    checkpoint58e_post
1649    o SEAICE_CGRID adjoint done
1650    o R_STAR adjoint implemented.
1651      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1652      * need to sort out init. of h0facc, etc.
1653    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1654      to be able to use it in pure forward.
1655    
1656    checkpoint58d_post
1657    o upgrade simple test-experiment to tutorial example:
1658     step.1: duplicate the experiment and (step.2) will remove the old copy.
1659      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1660      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1661      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1662      tutorial_global_oce_biogeo    <- copy of dic_example
1663      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1664      tutorial_plume_on_slope       <- copy of plume_on_slope
1665      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1666      tutorial_global_oce_optim     <- empty for now (David ?)
1667      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1668     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1669    o correct a sign problem in cost_scat.F
1670    o obcs and ptracers: fix boundary conditions for advections schemes
1671      with larger stencil
1672    o thsice adjoint: start
1673    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1674      completeness
1675    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1676      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1677    o ptracers adjoint:
1678      * avoid extensive recomputatations
1679      * fix missing re-init. of gptr (missed by TAF)
1680    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1681      me to turn off the excessive output to STDOUT that this package produces
1682    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1683      and add those terms in Vector-Invariant formulation.
1684    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1685      if the control period (xx_hfluxperiod etc) is 0
1686    o in profiles pkg, clean routines and fix details
1687    o in ecco pkg, reading ssh data:
1688      fix problem in case the model does not start at iter0=0
1689    o fix mnc-pickup/restart for ptracers
1690    o new package prifiles:
1691      code to compute profile-based cost by Gael Forget
1692      (modifs in ecco, ctrl, autodiff)
1693    o Benign bug fix in initialization (spotted by M. Mazloff) of
1694      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1695    
1696    checkpoint58c_post
1697    o adjoint: finish NLFS adjoint and provide reference output in
1698      verification/global_ocean.90x40x15/results_ad_nlfs
1699    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1700      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1701      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1702      with SEAICE_CGRID defined.
1703    o move calendarDumps from "data" to "data.cal" and clean-up the code
1704      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1705    o add useEXF & useCAL flags (for now, set in hard-coded way)
1706    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1707      (were missing in NH mode, and wrong in quasihydrostatic mode).
1708      waiting for Chris updated version of calc_gw to add those CALLs.
1709    o fix bug in quasihydrostatic S/R ;
1710      add a test for this option: global_ocean.90x40x15.qshyd
1711    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1712      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1713    o add on/off flag useOffLine for package OFFLINE
1714    o seaice:
1715      - modify advection so that it works also on the C-grid
1716      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1717        problem in multi-tile runs with C-grid
1718      - add flags for clipping ice velocities and/or masking solver forcing
1719      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1720        C-grid solver
1721      - added a few comments to seaice_diffusion.F
1722      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1723        are now exclusive)
1724      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1725        required re-ordering the code a little:
1726       + make DAIRN global variable (defined in SEAICE)
1727       + move computation of the viscosities eta and zeta into a new separate
1728         routine (because I need to recompute them in seaice_ocean_stress.F)
1729    
1730    checkpoint58b_post
1731    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1732      update output.txt of exp. aim.5l_cs.thSI
1733    o various mnc cleanups and improvements:
1734      + shrink lookup tables by factor of ~4
1735      + better error reporting when running out of lookup space
1736      + able to handle longer path/file names (up to 500 chars)
1737    o adjoint:
1738      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1739      - TBD: "hidden" mom_vecinv recomp. in dynamics
1740    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1741     (allow to differentiate between forcing components using new integer flags:
1742      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1743     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1744    o ecco
1745      - enable trend removal from SSH anomaly obs.
1746    o adjoint
1747      - a fix for PmEpR when #undef EXACT_CONSERV
1748      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1749      - try to fix "hidden" recomp. in forward_step for NLFS
1750        (NLFS seems broken sometimes after I checked it in)
1751    o seaice:
1752     - add c-grid version of the dynamic solver:
1753       + three new routines that are the c-grid substitute lsr, dynsolver
1754         and ostres
1755       + put a few fields that were local to dynsolver into global common
1756         blocks, so that I can move the computation of stresses etc into
1757         seaice_lsr (saves coding but may break the adjoint).
1758     - replace more hardwired parameters by runtime parameters
1759     - add ice masks that mask the rhs of the implicit solvers where there
1760       is no ice (commented out in seaice_dynsolver, because i am not sure
1761       if this works properly), eventually this should replace the clipping
1762       of ice velocities in seaice_dynsolver to +/-40cm/s.
1763    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1764      include it only where its needed
1765    o move balancing of fluxes before the call of external_forcing_surf
1766    o seaice:
1767      - correct units of turning angles (now they are really in degrees)
1768      - move computation of GWATX/Y out of main routine into dynsolver
1769      - initialize GWATX/Y in seaice_init
1770    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1771      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1772    o seaice: add runtime flags for turning angles (default to zero)
1773    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1774      and trend from exf forcing and ctrl control adjustments
1775    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1776      (since checkpoint57x_post)
1777    o change the default rotation period to 86164.s = the Earth rotation
1778    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1779      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1780    o seaice advection: add code for choosing between the default (2nd order
1781      central differences) and multiDim advection schemes provided by
1782      pkg/generic_advdiff
1783    o seaice:
1784      - removed all references to SEAICE_GRID.h fields from
1785        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1786        (cubed-sphere configuration will change a little)
1787      - grid computations in seaice_init are obsolete now.
1788      - cleaned up code a little so that is easier to read (hopefully).
1789      - added new (better?) discretizations of default advection and diffusion
1790        (turn on with SEAICEuseFluxForm)
1791      - replace 1 in 3d global fields by kSurface in growth.F
1792      
1793    checkpoint58a_post
1794    o seaice:
1795      - bug fix in advect.F
1796    o shelfice:
1797      - separate shelfice load anomaly from pload (breaks with time
1798        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1799        Its default is 0., but it may be computed more cleverly from (unknown)
1800        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1801        done offline. A good approximation of the pressure load anomaly is
1802        necessary to avoid large initial adjustment processes underneath
1803        deep-reaching shelfice.
1804      - small fix in ISOMIP shelfice_thermodynamics
1805      - add more sophisticated thermodynamics of Hellmer (1989), this is
1806        now the default
1807      - give a few constants more intuitive names
1808    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1809      if bulk formulae are used in long integration (especially EmPmR). Turn
1810      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1811      if balancePrintMean, the imbalance that is substracted is printed to
1812      STDOUT.
1813    o fix bug (typo) in obcs_apply_eta.F
1814    o add a new package shelfice which enables us to model the circulation
1815      underneath shelf-ice with draughts of hundreds of meters.
1816     - works
1817     - to do: + include improved thermodynamics
1818              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1819                instead of new field kTopC
1820              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1821                instead of new field R_shelfIce and new code in ini_depth.F
1822                and ini_mask_etc.F?
1823              + adjust vertical mixing schemes?
1824    o seaice pkg:
1825     - add a cpp-flag to include a simple formula for a salinity dependent
1826       freezing point of sea water at the surface
1827     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1828       meridional stresses are now different (and hopefully correct)
1829    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1830       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1831       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1832    o pkg/diagnostics: add options and parameters for regional-statistics
1833       diagnostics ; define regions by reading a region-mask from a file
1834       (might add other options later)
1835    o pkg/bulk_force:
1836     - add option and parameters to use AIM surface-flux formulae.
1837     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1838       others forcing fields (defined in PARM05, parameter file "data") are loaded
1839       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1840     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1841     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1842     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1843       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1844     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1845    
1846    checkpoint58
1847    o add "--embed-source" option to genmake2 which, when the supporting
1848      tools can be compiled (as determined by genmake2) will turn on the
1849      embed_files package which then embeds the entire MITgcm source code
1850      (*.[fFhc] + Makefile) used for the build within the executable
1851      - requested by CNH but off by default
1852      - adds a paltry <9MB to the mitgcmuv executable in most cases
1853      - only writes the output when useEMBEDSRC in eedata is true
1854    o clean up 3-dim. relaxation codes:
1855      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1856      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1857      * Thanks to Tom Haine for testing!
1858    
1859    checkpoint57z_post
1860    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1861      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1862    o fix the pickup behavior for obcs in combination with ptracers
1863    o fix a bug in ptracers_external_fields_load
1864    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1865      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1866    o transfered surface NH pressure to eta field (if exactConserv).
1867    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1868         and update lab_sea output.txt file.
1869    o completing 3-dim. relaxation code: additional term
1870         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1871      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1872      * At compile time, in "EXF_OPTIONS.h" set
1873          #define  ALLOW_CLIMTEMP_RELAXATION
1874          #define  ALLOW_CLIMSALT_RELAXATION
1875      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1876          tauThetaClimRelax3Dim = 15552000.0,
1877          tauSaltClimRelax3Dim  = 15552000.0,
1878      * 3 cases:
1879          1) Use a constant-in-time 3-dim. field
1880          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1881          3) Real-time relax. to time-evolving prescribed field
1882    o Adding Laplacian-type smoothness constraint on
1883      initial and boundary (forcing) controls (ic, bc)
1884      * enable at compile-time via
1885        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1886      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1887      * Absolute scale somewhat unclear so far
1888      * no area weighting was included since no other cost term does so far
1889    
1890    checkpoint57y_post
1891    First step for a NLFS adjoint
1892    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1893    o new init. routines for calc_r_star, calc_surf_dr
1894    o still need to deal with ini_masks_etc
1895    o testreport seemed happy
1896    checkpoint57y_pre
1897    
1898    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1899    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1900    o add new offset feature to offline pkg (plus minor cleanup)
1901    o cfc fixes for final year of integration
1902    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1903      be in GCHEM_OPTIONS).
1904    
1905    checkpoint57x_post
1906    o fix testreport Pb in multiple test experiment.
1907    o cleanup our namelist syntax in verification:
1908      - make it more F95 standards compliant (some work still needed)
1909      - allows the vast majority of our tests to work with gfortran
1910    o Non-Hydrostatic:
1911     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1912     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1913    o Allow to apply AB on T,S rather than on AB(gT,gS):
1914     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1915     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1916       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1917     - need a "clever" read_pickup to restart from the other AB formulation
1918    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1919    o remove some unused variables (reduces number of compiler warnings)
1920    o adjoint
1921      * Disable useVariableViscosity for adjoint for time being
1922        (there are a number of extensive recomputations)
1923      * Initialize certain variables needed for adjoint
1924    
1925    checkpoint57w_post
1926    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1927                 fix the singleCpuIO RS version of MDSWRITEFIELD
1928       and add a WARNING if using globalFiles=T with multi-processors.
1929    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1930      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1931    o tracer advection scheme:
1932      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1933       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1934       was not very convenient).
1935      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1936       (further tests needed for the implicit DST & Flux-Limiter schemes).
1937    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1938      and sRef for convenience, handy, when you want to initialize
1939      ptracers in a large domain with a constant non-zero value. Also,
1940      untangle ptracers_init.F a little.
1941    
1942    checkpoint57v_post
1943    o change dome exp. to use variable viscosity in side-drag terms.
1944    o remove all the files from the cfc_offline test since they are now
1945      incorporated into tutorial_cfc_offline which has been producing
1946      identical results for a few days of testing
1947    o add new parameter: sideDragFactor to enable half-slip-side BC
1948      and change side-drag S/R to use viscosity from mom_calc_visc
1949      (can switch back by setting sideDragFactor=0.); affects results at
1950      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1951       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1952    o vorticity & strain are now computed without masking, to account for
1953      no-slip-side BC in variable viscosity calculation ; mask is applied
1954      anyway later on, before computing advection/coriolis terms.
1955    o modify exp4 to test new obcs support for reading from external files
1956      and for passive tracers
1957    o fix behavior of ptracers_monitor when monitor output is written to a
1958      netcdf-file; still not independent of monitor.F (writes in the same
1959      file).
1960    o change default value of tRef (put a uniform, meaningful value for ocean
1961      & atmos) and initialize sRef (was missing, as Martin mentioned).
1962    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1963      to be proportional to enstrophy dissipation length.  Thus,
1964       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1965      This is now consistent with Smagorinsky and with the manual.
1966    
1967    checkpoint57u_post
1968    o OBCS and PTRACERS: add open boundary support for passive tracers
1969      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1970        OB-values from file; this is not different from the way theta and salinity
1971        are treated
1972      - however, Orlanski-radiation conditions are not supported, and the model
1973        will stop if you use pTracers and Orlanski at the same time.
1974      - beefed up the rountine obcs_external_fields_load: now only those open
1975        boundary values are overwritten with values from files for which there
1976        are really files, otherwise the OB-fields remain untouched. This makes
1977        it possible to use different OBs at different ends of the domain (as
1978        with EXF)
1979    o reduce number of exch calls in shap_filt (s2).
1980    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1981      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1982    
1983    checkpoint57t_post
1984    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1985    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1986      same truncation, independent of the face number: affects affects several
1987      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1988    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1989      note that biharmonic viscosity + no-slip was not tested in any experiment.
1990    o fix bug in non-linear free-surf side-drag ; generate new output for
1991      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1992    o make mnc honor the writeBinaryPrec flag for most kinds of output
1993    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1994  o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation  o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1995    error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).    error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1996  o add brackets in multi-terms sum to get same truncation, independent of  o add brackets in multi-terms sum to get same truncation, independent of
# Line 699  o add two new packages Line 2686  o add two new packages
2686    - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme    - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2687    - these scheme operate in a similar manner as KPP (without ghat, of    - these scheme operate in a similar manner as KPP (without ghat, of
2688      course), however there is only one diffusivity that is used for both      course), however there is only one diffusivity that is used for both
2689      temperature and salinity (and passive tracers)ç      temperature and salinity (and passive tracers)
2690  o add offline package  o add offline package
2691  o add "verification/dic_example" which contains a dic-gchem-ptracer setup  o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2692    provided by Stephanie Dutkiewicz    provided by Stephanie Dutkiewicz

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