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revision 1.551 by baylor, Tue Sep 20 21:01:29 2005 UTC revision 1.1139 by jmc, Wed Jul 8 23:38:05 2009 UTC
# Line 3  $Name$ Line 3  $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/thsice: add code for Near Infra-Red albedo (from Jeff)
8       (turned on with run-time flag: thSIce_calc_albNIR, in data.ice).
9    o move (from packages_readparms.F & initialise_fixed.F) to ini_model_io.F
10      MNC & MONITOR initialisation calls; move MNC calls from {pkg}_readparms.F
11      to {pkg}_init_fixed.F for {pkg}= kpp, seaice & shelfice.
12    
13    checkpoint61s
14    o pkg/exch2 (exch2_rxN_cube*):
15       remove last BARRIER (no need to synchronise after getting data from shared
16       buffer (get) as long as any change to buffer (put,recv) is between BARRIER)
17    o change tiling of natl_box (from 2 to 4 tiles) to get it tested with MPI+MTH
18      and generate new output (for the 2 tests) using default rotationPeriod.
19    o pkg/exch2:
20      - always call exch2_*_cube, not exch-1 anymore, if useCubedSphereExchange=F
21        (was already the case with AUTODIFF_EXCH2 defined)
22      - add bj in exch2 arrays and S/R.
23      - can now use pkg/exch2 for regular (non CS) set-up; switch test experiment
24        MLAdjust to exch2 (identical results except with MPI -> truncation diff);
25    o add pkg/longstep for ptracer timestep a multiple of U/V/T/S timestep
26      - adds deltaT argument to the subroutines TIMESTEP_TRACER DWNSLP_APPLY
27        GAD_ADVECTION GAD_CALC_RHS GAD_IMPLICIT_R GAD_SOM_ADVECT
28      - verification experiment natl_box.longstep
29    o build_options: ifort+mpi_aces optfile (following Constantinos advise):
30      allow different versions of ifort (8 or 9) and different versions
31       of mpi (mpich or mpich2) to be used with the same optfile.
32      requires to load a netcdf module and set MPI_INC_DIR (see comments inside
33       optfile). Change testing scripts (example_scripts/ACESgrid) accordingly.
34    o pkg/seaice:
35      fix previous modif (3-level field removed) for old-pickup reading
36    
37    checkpoint61r
38    o pkg/seaice:
39     - clean up the 3-time levels of UICE,VICE,HEFF,AREA in three steps:
40      1. introduce fields for time step (N-1)
41      2. do not use levels 2 and 3 anymore (but keep them)
42      3. replace 3D versions of UICE,VICE,HEFF,AREA by 2D versions. This
43         includes changes to pkg/thsice/thsice_get_velocity.F,
44         model/src/external_forcing_surf.F, pkg/obcs/obcs_apply_seaice.F, and
45         pkg/obcs/obcs_apply_uvice.F.
46     - completely remove code for leap-frog time stepping for second order
47       advection
48     - adjusted adjoint accordingly;
49       gradient checks have improved by an order of magnitude!
50    
51    checkpoint61q
52    o pkg/seaice: fix bug in free slip boundary conditons for LSOR solver
53     - the boundary conditions along open boundaries are unclear, because the
54       associated masks are set to zero and are thus treated as closed when
55       applying the slip-boundary conditions.
56     - move initialisation of grid variables from seaice_init_varia to _fixed
57    o adding doc/diags_changes.txt
58    o model/src:
59      do_the_model_io: rename few pkg S/R which are called from do_the_model_io,
60       to avoid "_diags" naming if no relation to pkg/diagnostics.
61      ini_theta,ini_salt: fix (at least compile the code) reading from NetCDF
62       file and only call PLOT_FIELD_XYZ if debugMode=T.
63      remove few PLOT_FIELD_XY calls outside initialisation.
64      remove few unnecessary BARRIER.
65    o pkg/salt_plume: add SaltPlumeSouthernOcean to allow disabling
66      of salt_plume package in Southern Ocean
67    o pkg/thsice:
68     - fix hOceMxL in overlap (needed for sea-ice advection);
69       update output of experiment global_ocean.cs32x15.icedyn.
70    o pkg/seaice:
71     - make the (placeholder-)tracer IceAge a little more meaningful
72      by avoiding ridging of age due to convergent ice flow
73     - add diagnostics for surface temperature, atmospheric and oceanic
74       heat flux, and atmospheric and oceanic ice growth
75    
76    checkpoint61p
77    o eesupp (global_max & global_sum):
78     - add one more element to buffer (start at index 0) for GL_MAX/SUM output;
79     - remove starting & endding barrier (no longer needed)
80    o pkg/mdsio, writelocal:
81       works also in multi-threaded when LOCBIN_IO_THREAD_SAFE is undefined
82       (remove the STOP): uses shared buffer IO to store data from all threads
83       and then let master-thread write nThreads tiles.
84    o pkg/mdsio (read/write field):
85     - tiled IO done in 1 piece (all levels at a time);
86     - new header file "MDSIO_BUFF_3D.h" with 3-D buffers.
87     - multi-threaded: allow to read/write local (non-shared) array
88       (was already working with singleCpuIO ; now works also without);
89       => no longer needs barrier call after reading a file (added inside
90       mds_read/write field).
91     - move barrier calls outside gather/scatter_2d to mds_read/write_field
92    o pkg/obcs/exf
93      - exf_getffieldrec.F: add a few ". _d 0" and
94                            add code to catch the case fldperiod = 0.  
95      - obcs_precribe_read.F: change if statements so that they match
96                              the variable type (_RL)
97      - add a separate exf_iprec_obcs to exf_set_obcs (by default equal to
98        exf_iprec) as part of namelist EXF_NML_01
99    o pkg/mdsio:
100      - read/write tiled (local) files: read/write 1-level tile chunk at a time
101        (instead of segment of length sNx); expected to speed up tiled IO.
102    o pkg/exch2:
103      - take buffer copy from/to array out of S/R exch2_send/recv into new
104        S/R exch2_put/get ; Exch of local variable now works with MPI+MTH
105        (tested by removing commom block statement in SOLVE_FOR_PRESSURE.h).
106      - ad version of send/recv no longer needed (but needs exch2_ad_put/ad_get)
107      - simplify argument list of S/R exch2_get_uv_bounds and exch2_get_scal_bounds
108        (which replaces exch2_get_recv_bounds & exch2_get_send_bounds) by
109        including Topology header file (and common blocks).
110      - implement EXCH_IGNORE_CORNERS in scalar exchange (rx1);
111        remove 2nd exch call in exch2_s3d_rx (no longer needed).
112      - document S/R arg. list (+ update some comments)
113    o pkg/seaice:
114      - added SEAICE_CLIM_AIR code, which permits modulation of surface air
115        temperature and humidity over sea ice based on climatological values.
116      - clean up computation of Hibler+Bryan (1987) stress coupling for the case
117        of LSR (this change is expected to change the results slightly because now
118        it uses slightly difference moduli from the second last LSR solution, but
119        that is more consistent with the stress computations; this part of the code
120        is not tested in the verification experiments)
121      - fix diagnostics for flux of ice in case of B-grid
122      - turn strain rates eij and press into global fields within global
123        common block in SEAICE.h for more straighforward diagnostics
124      - fix diagnostics for principal stress components, press, zeta, eta
125        to give something meaning full
126    o change tiling of global_ocean.cs32x15 (12 tiles, 32x16) and generate
127      new output (all 4 tests) using default rotationPeriod.
128    o pkg KPP:
129      - add flag (LimitHblStable) to avoid limiting BL depth under stable conditions
130      - fix vertical indices in RI_IWMIX (match between KPP grid from 0 to Nr+1
131        and normal grid from 1 to Nr)
132    o Fix computations of L4rdt in mom_calc_visc.F
133    o eesupp:
134      new S/R ALL_PROC_DIE (like EEDIE, without irrelevant threads err msg):
135      should be called before a "stop" if we know that all process are going
136      to stop; if one Proc does call this S/R, will hang in MPI_FINALISE.
137    
138    checkpoint61o
139    o pkg/exch2: change check_depths to issue just a warning (instead of error+stop)
140    o model/src/ini_curvilinear_grid.F:
141       compute angleSin/CosC when they are not read from a file
142    o pkg/seaice:
143       add pseudo time stepping for LSOR
144    o pkg/exch2:
145       temporary fix for exch2_s3d_rx; update results of exp. hs94.cs-32x32x5.impIGW
146    o pkg/seaice:
147       Adding separate sea ice albedo, drag coefficients, and HO in Southern
148       Ocean from those in Arctic Ocean.  See *_south in SEAICE_PARAMS.h
149    o SingleCpuIO:
150       fix bug put before chkp61n (May 11), when more than 2 MPI cpu are used.
151    o pkg/seaice:
152       put exchanged variable in (local) common block for MPI+Multi-Threads
153       to work (necessary with exch1, and for now with exch2 too).
154    o verification: to get more experiments tested with mpi, mth and mpi+mth,
155      change tiling of:
156       aim.5l_Equatorial_Channel, aim.5l_LatLon, dome, exp4, global_ocean.90x40x15,
157       hs94.cs-32x32x5, MLAdjust, offline_exf_seaice & tutorial_plume_on_slope
158      update output of exp:
159       exp4, global_ocean.90x40x15(+.dwslp), MLAdjust(all 5),
160       tutorial_plume_on_slope and hs94.cs-32x32x5 (use default rotationPeriod)
161      + ideal_2D_ocean: use default rotation period + test Global_Sum_SINGLECPU
162                       (note: output.txt generated on faulks using only 1 tile)
163    o eesupp & mdsio (SingleCpuIO):
164     - remove MISSING_TILE_IO (from MDSIO_OPTIONS.h), replaced by run-time
165       parameter "W2_useE2ioLayOut" (read from file "data.exch2").
166       Note: was not effective for globalFile & useSingleCpuIO=F; now fixed.
167     - move MDSIO_SCPU.h (pkg/mdsio) to EEBUFF_SCPU.h (eesupp/inc).
168     - fix GLOBAL_SUM_SINGLECPU when using Exch2; re-use same buffers and same
169       gather/scatter S/R as with SingleCpuIO (=> 1 less 2D global RL array).
170    o pkg/exch2:
171     - new code to set-up W2-Exch2 topology (replace matlab-topology-generator):
172       read parameter file "data.exch2" if it exists; otherwise try default regular
173       cube without blank-tile; new header file "W2_EXCH2_SIZE.h";
174     - update matlab-topology-generator (exch2_setup_cs6_print.m) to be compatible
175       with new code (not to be used, just as a backup solution).
176     - add examples (e.g., for lat-lon-cap_120) of parameter file "data.exch2"
177       in utils/exch2/input.
178    
179    checkpoint61n
180    o eesupp & mdsio (SingleCpuIO):
181      - move mapping to global io-buffer inside gather_2d/scater_2d: this save
182        memory (1 less 2D global RL array); skip 1 buffer copy; and only send/
183        receive real*4 array (instead of real*8) to read/write 32.bit files.
184        (new template for gather_2d/scater_2d, new set of S/R MDS_PASS_R4,8toRL,S
185         and remove new mapping S/R)
186    o pkg/mdsio: in preparation for topology-generator within pkg/exch2:
187      - Change declaration of SingleCpuIO buffer, reduced to only 1 dim.:
188        xyBuffer_size, which is set to W2_ioBufferSize from W2_EXCH2_PARAMS.h
189        when using exch2. Add S/R to map global io-buffer to global model array.
190      - uses exch2_global_Nx,y instead of exch2_domain_nxt,nyt.
191    
192    checkpoint61m
193    o write_utils : change WRITE_1D_R8 to WRITE_1D_RL
194      and add 3 other S/R for other types (R4,R8,RS).
195      Change calls to WRITE_0D/1D_R[4,8,S,L] to match the type of argument.
196    o eesupp/inc/CPP_EEMACROS.h (EXCH & GLOBAL_SUM/MAX macros):
197     - ensure suffix (_R4,_R8,_RS,_RL) correspondance between macro and S/R ;
198     - reduce number of macro definitions (keep only those which are used);
199       can always call directly the corrresponding S/R if needed.
200     - everywhere in the code: change macros (EXCH & GLOBAL_SUM/MAX) suffix
201       _R4/_R8 to _RS/_RL when applied to _RS/_RL variable.
202     Fixed wrong type of arg in:
203       atm2d/put_ocnvars.F cheapaml/cheapaml.F ocn_compon_interf/ocn_apply_import.F
204       ctrl/ctrl_map_ini_ecco.F seaice/seaice_do_diags.F seaice/seaice_model.F
205     To fix: global_sum of var in common block is wrong (multi-threaded) in:
206       dic/dic_atmos.F ebm/ebm_area_t.F ebm/ebm_zonalmean.F sbo/sbo_calc.F
207     To fix: aim_v23/aim_do_co2.F (BARRIER & GLOBAL_SUM within bi,bj loops)
208    o adjustment.cs-32x32x1: test "blank tiles" when compiling with mpi; 2nd
209      "nlfs" mpi test is going to stop when checking for unconnected tile egdes.
210    o eesupp/src: new S/R to stop everyone when 1 (or more) Proc. find an error
211    o pkg/exch2: new S/R EXCH2_CHECK_DEPTHS to check that unconnected tile
212      edges are closed (zero depth); might happen with "blank tiles";
213      for now, disabled if using OBCS.
214    o tools/gemake2: delete modifs from March 27-29 2009 (with option "-mpi":
215      link *_mpi files from "MODS" dir) to return to a strait-forward behavior.
216    o move read_write.F to write_utils.F ; new parameter (maxLengthPrt1D)
217      to reduce length of 1.D array print in STDOUT.
218    o adjustment.cs-32x32x1: changed to oceanic test with 1 continent
219      + use 48 tiles (16x8): this will allow to test "blank tiles".
220    o start to test MPI + multi-threaded (change testreport to skip tests
221      where number of tiles do not match).
222    o genmake2: add option "-omp" to turn on Open-MP ;
223      passed to testreport (if using -mth) ; merge few (*+mth) optfiles.
224    o pkg/exch2 (+ utils/exch2): ignore blank tiles (instead of removing them)
225      and keep the original tile numbering. Note: compatible with old
226      W2_EXCH2_TOPOLOGY.h & w2_e2setup.F topology files.
227    
228    checkpoint61l
229    o Overlaps had been forgotten in calculating ijk keys : fixed
230    o fix cyrus makedepend for gcc 4.4
231    o experiment fizhi-cs-aqualev20:
232      switching to new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE)
233      and generate new output. Note: new output is much closer to the old
234      one (v1.8) generated with pgf77 -O2 on Mar 14 2007 than it is from
235      the previous one (v1.9) generated with pgf77 -O0 on Jun 13 2007.
236    o pkg/fizhi:
237     - change to avoid indices going deliberately over array-bounds
238     - remove unnecessary MPI stuff
239     - perpetual spring equinox with "#define FIZHI_USE_FIXED_DAY"
240     - new version of S/R GETPWHERE available with #define TRY_NEW_GETPWHERE:
241       does not go over array-bounds and therefore returns reliable output.
242     - in fizhi_driver.F & fizhi_turb.F, fix "get_alarm" calls:
243       this S/R has 4 output arguments, which are used inside "get_alarm";
244       when it is called with the same variable "ndum" in place of several
245       output arguments, this produces weird side effect inside "get_alarm"
246      (e.g., datein=dates(n) is overwritten by timein=times(n) since both
247       datein & timein, resp. 2nd and 3rd arg., are pointed to the same "ndum"
248       address) and produces error.
249    o tools/gemake2: (March 27-29 2009)
250      with option "-mpi": link *_mpi files from "MODS" dir (this is what
251      testreport does).
252    o lab_sea experiment: change from 2x1 tiles to 2x2 tiles and regenerate output
253    o pkg/seaice: fix bug in new version of S/R SEAICE_LSR.F:
254       update lab_sea.lsr & lab_sea.salt_plume results
255    o pkg/seaice:
256      Major overhaul of the LSOR solver: change discretization from original
257      finite differences to finite volume. The old routine is still in the
258      file seaice_lsr.F and can be turned on with the CPP-flag
259      SEAICE_OLD_AND_BAD_DISCRETIZATION
260      Along with this change, the discretization of the strain rates is changed.
261      The same flag turns on the old discretization in seaice_calc_strainrates.F
262      All verification experiments with seaice are affected (except for
263      seaice_exf_offline); global_ocean.cs32x15/input.icedyn recovers the old
264      results by setting the above flag.
265      Further changes involve changes in defaults:
266      - ALLOW_FLOODING is defined and turned on by default
267      - SEAICEadvSnow = .true. is now the default
268      - SEAICEadvSalt = .true. is now the default
269      - SEAICEadvAge  = .true. is now the default
270      - SEAICE_clipVelocities  = .false. is now the default
271                                         (as per J. Zhang's recommendation)
272      - B-grid, and thus not tested: SEAICE_TEST_ICE_STRESS_1/EXPLICIT_SSH_SLOPE
273        is defined, SEAICE_TEST_ICE_STRESS_1 is renamed into SEAICE_BICE_STRESS
274      - seaice_growth: replace computation of UG by a simple copy from wspeed
275    
276    checkpoint61k
277    o pkg/seaice: a few bug fixes mostly concerning the metric terms:
278      seaice_lsr: fixed a few metric terms,
279                  affects lab_sea.lsr, lab_sea.salt_plume, seaice_obcs
280                  add more debugging diagnostics
281      seaice_evp: removed superfluous many metric terms of FV discretization
282                  of stress divergence
283                  affects lab_sea, lab_sea.hb87
284      seaice_ocean_stress: removed superfluous many metric terms of FV discretization
285                  of stress divergence for non-evp solver
286                  (this part is not tested anywhere)
287      seaice_calc_strainrates: fixed a bug in no-slip boundary conditions,
288                  they were effectively only half slip
289                  affects lab_sea.hb87
290      updated all relevant verification experiments (except lab_sea//output_adm.txt
291        which was left over, but fails at level 7 & 6)
292    
293    checkpoint61j
294    o pkg/seaice: turn a few hard wired parameters into run time parameters
295    o pkg/seaice/exf/monitor: turn netcdf coordinate variable T into model
296      time in seconds as promised by the usints in seaice_monitor and exf_monitor
297    o pkg/mnc: fix the coordinate variables for multi-tile curvi-linear grids
298      that are not cubed-sphere grids
299    o pkg/seaice: fix a bug for the rare case of SEAICE_VECTORIZE_LSR
300    o pkg/ctrl:
301      fix bug in ctrl_depth_ini.F (EXCH_XYZ was applied to 2-D field xx_r_low)
302    o non-hydrostatic (calc_gw.F):
303      fix viscA4 on CS-grid + fix diagnostics: Wm_Diss & Wm_Advec
304      update output of exp. global_ocean.cs32x15.viscA4
305    o remove backward compatibility for thetaMin,phiMin
306      (replaced by xgOrigin,ygOrigin on Jan 27, 2009)
307    o pkg/exf: fix a serious bug in exf_set_uv.F: do a rotation of the
308      interpolated wind field not only for curvilineargrid=.true., but also
309      for a rotated grid (rotateGrid=.true.)
310    o pkg/exf: add capability to bypass interpolation for runoff
311      by setting yet another CPP-flag
312    o eesupp/src, B-grid exchange:
313      add simple (6 tiles, non MPI) CS exch + standard interface S/R.
314    o autodiff
315      new CPP option ALLOW_TAMC_SINGLEPREC_COMLEV
316      allows to switch to single-prec common blocks;
317      corresponding switch occurs in tamc.h, integer isbyte
318      TAF store directivs "byte" and "kind" seem equivalent;
319      Most tamc.h have been updated correspondingly.
320    
321    checkpoint61i
322    o autodiff:
323      fix autodiff_sore/_restore indices for obcs
324      (spotted by I. Hoteit, M. Mazloff)
325    o pkg/autodiff, pkg/ctrl:
326      Add flag to reduce all tapelev I/O to single-prec.
327      In data.ctrl set
328        doSinglePrecTapelev = .TRUE.
329    o model/src/ini_curvilinear_grid.F, new grid-file format without EXCH2:
330      check in hack for SX8 compiler (for dxV, dyU); remove it afterwards.
331    o pkg/shelfice: fix bug with SHELFICEconserve flag, prepare for
332      real fresh water flux (not yet)
333    o pkg/mdsio & rw:
334     - add argument & option to S/R MDS_WRITEVEC_LOC (avoid Open/Close & write-meta)
335     - add simple interface S/R to MDS_WRITEVEC_LOC in pkg/rw: WRITE_GLVEC_RX.
336    o pkg/flt:
337     - replace FLT_INIT by 3-steps standard initialization S/R: readparms,
338       init_fixed & ini_varia.
339     - clean-up & simplify linear interpolation S/R:
340       move flt_bilinear.F -> flt_interp_linear.F ; add arg. myThid.
341     - fix some indices (mainly vertical index) ; add IMPLICIT NONE.
342     - more efficient I/O, using new options of MDS_WRITEVEC_LOC S/R.
343     - add vert. coordinate & horiz. indices to output files.
344     - change vertical position in initial condition, from index to depth [m].
345     - store horizontal (decimal) indices i,j in common block (instead of coord. x,y)
346       (easier to get to a curvilinear grid) ; delX,delY no longer used.
347    o pkg/ggl90: a few modifications:
348     - fix bottom boundary condition, and interpolation of KappaE
349       near top and bottom
350     - use same set of viscosity/diffusivity for TKE/momnetum/tracer
351     - add smoothing option as in Blanke and Delecluse (1993) (--> ALLOW_GGL90_SMOOTH)
352     - add a few options for mixing-length upper limit (--> mxlMaxFlag)  
353    o rename thetaMin,phiMin -> xgOrigin,ygOrigin
354      (maintain temporary backward compatibility, until next checkpoint)
355    
356    checkpoint61h
357    o pkg/diagnostics with "periodic averaging diagnostics":
358      fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
359    o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
360    o pkg/obcs: fix loop ranges for balancing code
361    o pkg/flt:
362     - improve criteria for finding which tile owns a float.
363     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
364    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
365      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
366      with ocean biogeo)
367    o pkg/flt:
368     - do some cleaning and fix the restart ;
369     - add output.txt in flt_example/results to get this pkg tested.
370    o genmake2: add an EXTENDED_SRC option and flag.
371       for now, cannot be turned on on command line (only through genmake_local)
372    o pkg/mdsio: read/write vector:
373     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
374     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
375       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
376     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
377      (drop to 4 digits matching for grad). But this test does not look very
378      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
379    
380    checkpoint61g
381    o pkg/flt:
382      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
383       + make OPTIONS file more standard.
384      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
385      - fix _BYTESWAPIO CPP-Flag
386      - standard reading of file-parameter "data.flt"
387      - fix argument list of S/R FLT_RESTART
388      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
389    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
390    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
391      a still unfixed compiler/optimization bug
392    
393    checkpoint61f
394    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
395      update results of global_ocean.cs32x15.icedyn test.
396    o move getcon.F from model/src to pkg/fizhi.
397    o pkg/exf: add parameter for extrapolation of temp up to the surface
398       and option to prevent negative evap (in bulk_largeyeager04 only).
399    o Prather Advection scheme: fix tracer conservation for divergent flow
400      (e.g., when using NonLin Free-Surface).
401    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
402    o gmredi (Visbeck-variable-K):
403     - add more parameters to Visbeck-variable-K.
404     - use a 5 points average for dSigmaR in Visbeck-K calculation
405       (more "homogenous": same stencil and same weights as in dSigmaH)
406     - update output of ideal_2D_oce experiment.
407    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
408      (#undef REAL4_IS_SLOW)
409     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
410       coordinate variable
411     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
412       (surface forcing fields), removes some of the functionality
413     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
414     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
415       probably not all: copy _RS surface flux fields to RL field before
416       calling DIAGNOSTICS_FILL
417     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
418       real*4 (CALL EXCH_*_RS) versions.
419     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
420       (generate new output).
421    
422    checkpoint61e
423    o gmredi (Visbeck-variable-K):
424      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
425      - change computation of Visbeck-K where Slope > Smax :        
426        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
427        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
428    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
429      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
430    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
431    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
432      does not become too large (to avoid precision problems in implicit-diffusion
433      solver); update ideal_2D_oce output.
434    o pkg ggl90:
435      - in ggl90_cal.F: compute only one set of visc/diff, used to
436        step forward TKE/T/S/momentum
437      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
438        have Prandlt =1)
439    o gmredi (fm07):
440      - add lower limit on Transition layer thickness + lower limit on 1/lambda
441      - allow to set few more params from data.gmredi
442    o pkg ggl90:
443          - add missing sqrt(2) factor in computation of mixing length
444            scale in ggl90_calc.F
445            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
446    
447    checkpoint61d
448    o adjoint modifs
449      - adapt to new field rhoInSitu
450      - allow to revert from StoreDynVars2D, StoreDynVars3D
451        to individual fields
452        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
453    o store 3-D (in-situ) density in commom block (DYNVARS.h)
454     - save 1 rho computation.
455     - no longer modify T & S inland when using down_slope pkg.
456    o gad_som : allow to switch to SOM advection for T & S without corresponding
457      pickup files (using new S/R: MDS_CHECK4FILE).
458    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
459      (for useSingleCpuIO to work in multi-threaded)
460    o pkg/shelfice:
461     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
462       with SHELFICEtopoFile in data.shelfice
463     - move code for reading ice shelf topography and modifying hFacC into separate
464       subroutines of the shelfice package
465     - separate initialisation of "fixed" and "variable" variables
466     - kTopC is not (yet) replaced by kSurfC, although this is possible
467    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
468    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
469      and rename:
470      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
471      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
472    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
473    
474    checkpoint61c
475    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
476      to add mass source/sink of fluid in the interior (3-D generalisation
477      of oceanic real-fresh water flux).
478    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
479    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
480    o new pkg: down_slope
481      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
482      - presently, modify T & S inland (dwnslp_calc_rho.F).
483        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
484      - implementation for ocean in P-coords not tested.
485      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
486    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
487      (to facilitate conversion of oceanic pkg to p-coordinate).
488    o change FIND_RHO to FIND_RHO_2D :
489      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
490    o new pkg: cheapaml
491    
492    checkpoint61b
493    o exch2:
494      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
495      - no longer depend on the order sequence (N,S,E,W).
496      - 3rd exchange no longer needed (tested with 24 tiles).
497      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
498      - exch_UV_A-grid readily available (but not yet tested).
499      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
500      (both are no longer needed) in exch_uv: no effect in forward run; but
501       get truncation error differences with adjoint exch.
502    o exch2:
503     - change index-bounds storage (moved from target to local tile,
504       more intuitive this way) ; rename/remove some variables.
505     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
506    
507    checkpoint61a
508    o exch2/matlab-topology-generator:
509      fix bug in index bounds for N-S internal exchange (hard to tell if this
510      had any effect on the solution).
511    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
512      is exceeded
513    o testreport: modify syntax of awk, so that it works also with
514      awk, and not only with nawk and gawk
515    
516    checkpoint61
517    o autodiff
518      Change default for TAF usage by removing argument '-nonew_arg'
519      This changes TAF subroutine argument list (ordering of active var.)
520      Omission of this flag leads to incompatibility w.r.t. TAMC
521      To restore TAMC-compatibility, need following modifs:
522      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
523      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
524      Tested TAF version is 1.9.22
525      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
526    
527    checkpoint60
528    --->>> This is the last checkpoint for which generating the adjoint
529    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
530    --->>> by default.
531    --->>> Future checkpoints will ommit this flag by default.
532    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
533    o pkg/grdchk: Add gradient check to etan0 perturbations.
534    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
535    o pkg/autodiff: more flexibility in zeroadj.
536      model/src: modifying do_oceanic_phys.F accordingly.
537    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
538    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
539      special setup of gmredi for which the adjoint is stable
540      enough for parameter optimization.
541    o bridging the gap between eddy stress and GM.
542      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
543          along with a change in CPP option (now ALLOW_EDDYPSI).
544      -> when using GM w/ GM_AdvForm:
545          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
546          is applied either in the tracer Eq. or in momentum Eq.
547          depending on data.gmredi (intro. GM_InMomAsStress).
548      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
549      The key modifications are in model/src/taueddy_external_forcing.F
550      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
551    
552    checkpoint59r
553    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
554      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
555      fix option to read coriolis(@ cell-corner) from files with CS-grid.
556    o pkg/mnc: add some attributes to standard 1D-coordinate variables
557    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
558      mass points, when using mnc for output
559      - add runtime parameter (missing_value, missing_value_int) to override
560        default (which is the value of getcon('UNDEF'))
561    o pkg/mnc: prepare mnc for the actual use of missing values with the
562      diagnostics package: small fix in mnc_cw_readwrite.template and more
563      initialisation of never used fields
564      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
565      versions
566    o pkg/thsice/thsice_ini_vars.F added default initial values so that
567      thermodynamics sea ice solver does not blow up when some initial fields
568      are missing.
569    o move from external_forcing_surf.F to ini_forcing.F
570      the p-coord. hack consisting in using pLoad to set phi0surf ;
571      update output of tutorial_global_oce_in_p (affected @ truncation level).
572    o Freshen up a bit hs94.1x64x5, notably:
573      remove rotationPeriod and tRef=5*0. (adjoint only), and add
574      exactConserv=.TRUE.
575    o pkg/generic_advdiff:
576      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
577      applies to files where Temperature & Salinity 2nd Order moments are used.
578    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
579      this uses a dynamically allocated internal state data structure
580      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
581      and requires a fortran 90 compiler
582    
583    checkpoint59q
584    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
585       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
586    o Refresh tutorial_global_oce_biogeo, notably:
587      - change bathymetry (put back seamounts in ACC, use hFacs)
588      - change EOS (POLY3 --> JMD95Z)
589      - use Bryan-Lewis vertical diffusivity
590      - use multidimensional advection
591      - remove old virtual virtual in dic pkg, now done through ptracer pkg
592      - change a couple of parameters in dic pkg
593    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
594    o pkg/obcs: change default to OBCSfixTopo = .true.,
595      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
596      - replace "debugMode" with "debugLevel .GE. debLevB"
597    o implementation of TAF directives for gchem,cfc,dic
598    o remove "exp5" (replaced by tutorial_deep_convection).
599    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
600      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
601      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
602      --> changes results in exp4, seaice_obcs
603    o tutorial_deep_convection :
604      update the set-up and increase resolution and domain size ; start
605      from pseudo initial conditions = output at t=120mn in order to see
606      something happening when running testreport.
607    o pkg/seaice: add os7mp as an advection scheme
608                  add check for advection schemes
609                  add a flag for restoring T and S underneath sea ice
610    o pkg/my82: add netcdf-support and diagnostics
611    o thsice pkg:
612      - Now hsMax limits snow height by turning it into ice following
613        flooding scheme (and now conserving energy)
614      - Slight rewriting of the formula in thsice_calc_thick.F
615      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
616      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
617    
618    checkpoint59p
619    o gchem / dic / cfc :
620      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
621      - add new parameter files: "data.dic" & "data.cfc" ;
622      - various re-arrangement in initialisation & header file ;
623      - fix tutorial_global_oce_biogeo for multi-threaded test.
624    o pkg/dic: test for "pickup_dic" file when restarting ;
625      if no pickup-file, can restart with a re-initialised pH (same as it did
626      before) providing pickupStrictlyMatch is set to False.
627    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
628      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
629    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
630      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
631    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
632     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
633       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
634    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
635       scheme to use for vorticty-term ;
636     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
637       (with default selectVortScheme, return to original discretisation)
638     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
639    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
640    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
641      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
642      also fix diagnostics VISCAHW & VISCA4W.
643    
644    checkpoint59o
645    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
646    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
647      move a few statemens out the main loop into separate loops
648    o pkg/shelfice:
649      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
650        (kg/m^2/s), does not break tests, because in verification/isomip,
651        rhoConstFresh=rhoConst (by accident)
652      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
653      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
654        new file model/src/seawater.F, so that they are available for all pkgs.
655      - convert potential temperature into in-situ temperature. This changes the
656        isomip tests => update tests
657    o add a flag writePickupAtEnd (default=true) to be able to suppress
658      writing a pickup at the last timestep
659    o tools/mpack-1.6 :
660      - disable automake (not working) and autoconf (not needed).
661      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
662        also cleaner with much less compilation warnings.
663    o pkg/profiles:
664      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
665      (for "less than 32 characters name" compiler requirement)
666    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
667      conditions that have a different sampling frequency than S/T/U/V obcs
668    o pkg/diagnostics (stats-diags):
669      - fix global Min/Max in case 1 processor get only empty tiles
670    o genmake2: replace (4 times)
671         make genmake_tc_1.o >> genmake_warnings 2>&1
672      with
673         COMM="$CC $CFLAGS -c genmake_tc_1.c"
674         echo $COMM >> genmake_warnings
675         $COMM >> genmake_warnings 2>&1
676      to make genmake2 always see the value of CC as specified in the optfile.
677    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
678      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
679      - modify verification advect_cs test to test SOM-advection on CS-grid.
680    o pkg/ctrl:
681      - Rewrite of ctrl_map_ini_ecco.F,
682        introducing a generic routine (ctrl_map_ini_gen.F).
683      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
684    
685    checkpoint59n
686    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
687      number in dedicate array "hdiag":
688      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
689        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
690      - many small changes (integer format) for large number of diagnostics
691      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
692        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
693    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
694      usingSphericalGrid, this allows to define the rotated grid coordinates
695      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
696      geographical coordinates according to the inverse of the rotation defined
697      by the Euler angles, so that Coriolis parameter and online-interpolation by
698      exf works with the geographical coordinates on XC/YC/XG/YG.
699      Naturally, this feature does not work with all packages, so some
700      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
701      profiles), because there the coordinates are assumed to be regular
702      spherical grid coordinates.
703    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
704      - introduce isopycnal diffusion coefficient control.
705    o tools/adjoint_options:
706      - additional control vector components.
707    o pkg/mnc: have mnc create marginally meaning full coordinate variables
708      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
709    o pkg/mypackage:
710      - add example of read/write pickup for state-var ;
711      - add entry points to the main code for state-vars diags & write-pickup.
712    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
713      transitions for useExfYearlyFields
714      - add new subroutine that determines the file to read from for
715        use*YearlyFields = .TRUE. and .FALSE.
716      - add a verification experiment to global_with_exf that tests
717        useExfYearlyFields with USE_EXF_INTERPOLATION defined
718    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
719      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
720      subroutines (which could be generated from a template, because they are
721      almost identical), for now they are included in obcs_prescribe_read.F for
722      simplicity
723    o pkg/exf:
724      - add a little more diagnostic to exf_interp_read (in analogy to
725        mds_read_field, can be turned off with debugLevel < debugLevA=1)
726      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
727        ugly but fast by unrolling short inner loops, inserting a unroll=8
728        directive in routine lagran, and splitting a loop and making do while the
729        outermost loop (the latter requires the intoduction of index arrays)
730    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
731    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
732      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
733    o verification/seaice_obcs: updated for restart test and latest options
734    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
735      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
736      for now this is only available for the C-grid code and also within
737      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
738    
739    checkpoint59m
740    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
741      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
742    o gad_som : fix flux output (& diagnostics) to have same units as other  
743      advection scheme fluxes (was previously multiplied by deltaT).  
744    o added verification/seaice_obcs both to test seaice open boundaries
745      and to provide an example matlab scrpt for generating them
746    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
747    o pkg/salt_plume: clean up salt_plume_frac.F to
748      remove redundancy in PlumeMethod 1 and 4
749    o pkg/kpp: added saltplume diagnostics
750    o pkg/obcs and pkg/seaice:
751      - do not set uice and vice to zero when OB*icefile are unspecified
752      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
753      - moved seaice tracer obcs after call to seaice_growth
754    o pkg/salt_plume: added various options for salt plume depth
755      criterion and for vertical distribution of the salt
756    
757    checkpoint59l
758    o pkg/ptracers: new version of ptracers pickup:
759      read meta file and write only fields which are needed to restart.
760      ( same logic as main pickup file ; also using pickupStrictlyMatch )
761    o pkg/seaice:
762      - add timescale for melting due to warm mixed layer as a means of
763        setting SEAICE_availHeatFrac more conveniently
764      - add a CPP-flag/runtime parameter check for flooding algorithm
765      - reformulated availHeat in seaice_growth.F to be independent of AREA
766    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
767      unit changes
768    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
769    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
770      SX vector computer.
771    o pkg/seaice:
772      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
773        seaice forcing fields can now be read only through pkg/exf
774      - removed some unused halos
775    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
776    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
777      or U/VICE from U/VWIND before computing U/VSTRESS
778    
779    checkpoint59k
780    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
781      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
782    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
783      all experiments pass when compile with un-initialised var. checking option.
784    o added pkg/salt_plume
785    o script to test restart (for now, in MITgcm_contrib/jmc_script)
786    o pkg/seaice: new read/write pickup version.
787      read meta file and write only fields which are needed to restart.
788      ( same logic as main pickup file ; also using pickupStrictlyMatch )
789    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
790    o lab_sea.hb87: modify the domain & update output.hb87.txt :
791      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
792      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
793      process. Fixed here by closing the domain at the Northern boundary.
794    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
795    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
796      a set of consecutive levels in/from a 3-D array.
797    o pkg/ptracers:
798      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
799      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
800    
801    checkpoint59j
802    o in pkgs: dic, obcs, offline, rbcs:
803      standard way to compute coeff. for time interpolation between 2 time reccords
804      which retains full precision (& make results less dependent on compiler).
805      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
806    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
807      packages instead of reading ice cover and wind speed separately
808    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
809     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
810      to allow to compile customized code before the update)
811    o cleaning-up:
812      - fix CPP instruction syntax in pkg/obcs
813      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
814        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
815      - fix some threads issue in IO parts.
816    o pkg/dic:
817      - add tons of "_d 0" (--> much better testreports !)
818       and then update outputs of tutorial_global_oce_biogeo
819    o pkg/mom_fluxform:
820      add a special version of momentum advection intended to conserve momentum
821      next to a bathymetry step or a coastline edge. (default = off = #undef)
822    o new read/write pickup version:
823      - for now, only implemented for main (mdsio) pickup file.
824      - write out only what is needed to restart; merge pickup_nh , pickup_ph
825        and main pickup together.
826      - read meta file; read only what is needed to restart; stop if a field
827        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
828        if it make sense (even if the restart is not perfect).
829      - if no meta file, assume that pickup to read corresponds exactly to
830        a pickup that would currently be written.
831      - read pickup written in the old format (until checkpoint59i) if it
832        recognizes an old meta file (no field-list).
833      - add a meta file in exp. which starts from a pickup: 2 cases:
834        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
835         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
836        b) a meta file describing the content of the associated pickup file
837         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
838    o pkg/mdsio & pkg/rw:
839      - new routine to read a meta file ; new set of routine to read
840        Multiple-fields file (with meta file).
841    o added open boundary conditions capability for seaice
842        HSNOW, HSALT, UICE, and VICE
843    
844    checkpoint59i
845    o adjoint:
846      * fix multiDimAdvection adjoint
847        (partial recomputation problem by TAF for fVerT(:,:,kDown)
848        and comlev1 size definition (maxpass vs. max. number of tracers)
849      * verification/global_ocean.90x45x15 adjoint now tests
850        NLFS and multiDimAdvection using DST3 (=30)
851      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
852    o pkg/kpp: add "_d 0" to real constant (if missing);
853      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
854      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
855    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
856      for internal parameters related to restart process (formerly from PARAMS.h)
857      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
858    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
859      as argument. (only atm2d & obcs write_pickup have not yet been updated)
860    o pkg/monitor:
861      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
862      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
863      - account for deep Atmosphere factor and density factor (anelastic)
864    o added open boundary conditions capability for seaice HEFF and AREA
865    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
866      thermodynamics
867      - requires a little reorganization, which affects the testreport results
868        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
869        so that now the conservative form is tested
870      - add a few comments
871    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
872    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
873    o add new diagnostics to seaice: advective, diffusive fluxes (only for
874      multidim-advection, for scheme 2 they are not filled) and transports,
875      thermodynamic growth rates
876    o change units of EmPmR (inside the code, + within coupling interface)
877      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
878      Affects results @ truncation level (cg2d match) and update output of
879       experiments: lab_sea(6), global_ocean.90x40x15(10),
880      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
881      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
882      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
883      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
884    
885    checkpoint59h
886    o pkg/exf:
887      - improve vectorization by moving if-statement out of loops in
888        exf_mapfields, exf_radiation
889      - exf_bulkformulae.F: introduce 2D fields and vectorize code
890    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
891    o testreport:
892      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
893        monitor & update offline_exf_seaice exp. output.
894      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
895    o pkg/seaice:
896      - bug fix in the evp solver: boundary conditions were affected be
897        masking of zMax/zMin (changes results)
898      - minor bug fix in boundary conditions in seaice_calc_strainrates
899        (changes results for no_slip)
900      - seaice_lsr.F: make interpolation of eta dependent on boundaries
901      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
902      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
903        stress formulation and no-slip boundary conditions
904    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
905      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
906    o pkg/seaice: a first HSALT time stepping equation has been checked in
907    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
908      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
909      without requiring DO-IF statements
910    o pkg/thsice:
911      use continuous power-law function for partition of energy between lateral
912      melting/freezing and thinning/thickening ; old code using step function
913      still available with #undef THSICE_FRACEN_POWERLAW
914      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
915    o testreport: change AD testing : check against results/output_adm.txt
916      using same scripts as for forward test.
917    
918    checkpoint59g
919    o adjoint testing: in preparation for changing testreport:
920      - output format: cost and grad written on separated lines
921      - ad output results in directory "results" (instead of "results_ad")
922    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
923    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
924    o pkg/ecco: allow user defined cost function contributions
925    o testreport:
926      Allow to choose (per experiment) the list of tested output variables
927       and the main variable (used to issue a pass/FAIL ) ;
928      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
929      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
930      Also modify printing of summary:
931       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
932       b) echo the list of tested variables in the individual summary.txt of
933          each experiment.
934    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
935      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
936      (but still depend on the tile decompostion of the domain).
937    o pkg/seaice: change a discretization detail to make the B-grid code
938      "more symmetric". This change is likely to remove all "ridges/leads" that
939      where quasi-aligned with the grid in B-grid solutions. It may also be
940      the solution to the stress coupling issues with the B-grid.
941    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
942      remove .cvsignore from input dir. (since testreport no longer run here).
943    o pkg/thsice:
944     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
945     - fix reshaping of sea-ice just after advection:
946       melt all the ice only if ice-volume is too small.
947     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
948       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
949     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
950    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
951      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
952    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
953      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
954      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
955      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
956      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
957      -> update output.txt
958    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
959     this affects truncation error: -> update output.txt of exp:
960      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
961      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
962    
963    checkpoint59f
964    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
965    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
966      a bounded range (in forward mode)
967    o pkg/ecco, ctrl, autodiff and mom_common:
968     internal parameter controls, completements of implementations
969    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
970    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
971      (not seem any difference in testing results).
972    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
973       at face corners.
974    o pkg/generic_advdiff:
975     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
976      loop range indices for computing vertical advection tendency
977      and do the calculation in the interior only (no overlap) ;
978      for now, only implemented for SOM advection (to save CPU time).
979     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
980    o exch2 adjoint
981      First set of changes:
982      - add exch2 hand-written adjoint templates
983      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
984        This will require cleanup in pkg/autodiff/*.F
985        (changed routines currently kept separate in verif. code/)
986      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
987        that used to hide exch2 or cubed-sphere specific code
988        (commented via 'cph-exch2')
989    o pkg/seaice
990      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
991    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
992       output of global_ocean.cs32x15.thsice .
993    
994    checkpoint59e
995    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
996      for B-grid vector (not yet tested) and C-grid vector (<- only used
997      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
998    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
999      (#ifdef ALLOW_SALT_PLUME)
1000    o gather_2d/scatter_2d: removed halo regions
1001    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
1002      scheme and the corresponding test case (under front_relax dir). For now,
1003      only available with Skew-flux form and not yet tested in realistic set-up.
1004      adjoint: store directives updated, but gradient checks deteriorated,
1005      so maybe GM/Redi adjoint is now broken.
1006    o seaice adjoint
1007      * add AREA, HEFF, HSNOW as control variable
1008        (should not change lab_sea results)
1009      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
1010    o pkg/seaice:
1011      * added computation of saltFlux in seaice_growth;
1012        For time being, sea ice salinity is assumed constant
1013        contribution of snow flooding to freshening of sea ice is neglected.
1014        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
1015        defaults to 0.0 in order to maintain backward compatibility.
1016        Typical values for SEAICE_salinity are 4 to 10 g/kg.
1017      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
1018      * added SEAICE_availHeatFrac, which specifies fraction of surface level
1019        heat content used to melt or grow ice
1020      * commented out cap of HICE: it helps keep ice thinner
1021      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
1022      * applied OBCS T/S mask to HEFFM sea ice mask
1023    
1024    checkpoint59d
1025    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
1026     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
1027     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
1028    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
1029     and change default value of parameter "GM_Small_Number";
1030     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
1031       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
1032       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
1033    o pkg/ecco: cost function when applying pkg/smooth to controls
1034    o pkg/ctrl: add forcingPrecond run time parameter
1035    o pkg/seaice:
1036     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
1037     - fix bug in metric terms of u-equation in LSR solver (implicit part),
1038       changes verification/lab_sea
1039     - rearrange implicit part of u-equation in LSR solver to make it easier to
1040       read, understand, and debug. This causes changes at the truncation level.
1041     - fix (serious) bug in the boundary conditions (sign error in the implicit
1042       part) of the LSR solver. Changes all LSR results.
1043     - fixed problem with HSNOW initialization to avoid thick snow when AREA
1044       is initilized with small values - does not change lab_sea results.
1045     - added HsnowFile initialization capability
1046    o pkg/smooth: addition to model/src and pkg/ctrl so allow
1047     initialization of pkg/smooth and application to control vector
1048    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
1049    o dependencies: pkg/profiles requires pkg/cal
1050    o pkg/profiles:
1051     - added option ALLOW_PROFILES_GENERICGRID
1052         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
1053         that interpolation information (grid points and coefficients) is provided
1054         within the netcdf input files.
1055         -> sample matlab scripts can be found in MITgcm_contrib/gael
1056         that allow you to prepare netcdf input files.
1057     - also modified: cleaner include statements, cleaner error print statements,
1058       cleaner stops when error, and more tests of the netcdf input files consistency.
1059    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
1060    o pkg/seaice:
1061     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
1062       requires a new routine: seaice_diagnostics_fill.F
1063     - make sure that seaice does not move if not forced (pressure replacement
1064       method, Hibler and Ip, 1995), changes results
1065     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
1066     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
1067       It is turned off by default (=-1.), because it changes the results.
1068     - make it possible to read AREA from a file, too.
1069    
1070    checkpoint59c
1071    o add S/R and diagnostics for oceanic mixed-layer depth
1072    o move GMRedi call after all vertical mixing schemes (including KPP)
1073    o pkg/thsice:
1074     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
1075      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
1076    o pkg/obcs:
1077     - bug fix for balance code
1078    o pkg/seaice:
1079      - allow values of SEAICE_elasticParm > 1
1080      - add new parameter SEAICE_evpTauRelax as an alternative
1081        to SEAICE_elasticParm
1082      - make lsr boundary conditions free slip (by default), changes result
1083      - add code for no slip boundary conditions for lsr
1084      - set minimum of zeta to zero (and not 4e8) (changes results)
1085      - add a cap on AREA after advecting AREA if seaice_growth is not called
1086    o change calculation of Visbeck K:
1087      - no longer depend on tapering scheme; instead, compute slope (limited
1088        by GM_maxSlope). this is equivalent to what was comuted before with
1089        clipping or linear tappering.
1090      - fix vertical averaging (wrong by 1/2 level)
1091      - leave the old version (but will not be maintained) within
1092        #ifdef OLD_VISBECK_CALC / #endif
1093      - update output of exp. ideal_2D_oce
1094    o change error catch in calc_r_star to improve vectorization
1095    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
1096      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
1097    o adjoint:
1098      Re-organized adjoint checkpointing according to Matt Mazloff
1099      (but with modifs/completions/cleanups)
1100      Storing is now bundled into large arrays to optimized I/O
1101      (and second step in cleanup of the_main_loop)
1102    
1103    checkpoint59b
1104    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
1105      - export/import (between ocean & coupler) fields needed for ocean DIC.
1106    o pkg/seaice:
1107      - get rid of three more exchanges seaice_calc_viscosities (required
1108        different loop boundaries in seaice_lsr and seaice_ocean_stress)
1109      - bug fix in seaice_ocean_stress (update of lab_sea required)
1110      - reduce loop boundaries to necessary minimum also in seaice_evp
1111      - go back to the old way of computing deltaC/Z as the adjoint likes that
1112        better
1113    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
1114      passive tracer to an Age Tracer) + update output.txt
1115    o pkg/exf:
1116      - implement A-grid / C-grid selection for wind-stress input files.
1117      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
1118      for now, in exf_bulk_largeyeager04.F only :
1119      - change implementation for case where windspeed + 2. components wind-stress
1120        are read-in. AND use rhoConstFresh to convert evap.
1121    o pkg/seaice:
1122      - use correct EXCH_UV for wind-forcing (on A-grid).
1123      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
1124        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
1125    o pkg/exf:
1126      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
1127      EXF_INTERPOLATION:
1128      - merge global_with_exf/code version of exf_interp_read.F
1129        to the main code ;
1130      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
1131        reading the file ; Important: This options needs to be defined to recover
1132        previous code.
1133        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
1134      - no longer loose real*8 precision along the way when using exf_iprec=64.
1135    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
1136      - change discretisation of evp-solver in order to avoid another exchange
1137        (changes lab_sea) and clean up a little
1138      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
1139        help the adjoint (this also changes the results slightly)
1140      - add a few "_d 0" where they had been missing in seaice_evp.F
1141      - cleaning up: remove unused seaice_calc_rhs.F
1142    o pkg/exf: some cleaning-up:
1143      - change various "constants" into runtime parameters
1144      - cleaned-up Large&Yeager04 routine which should eventually
1145        replace exf_bulkformulae.F (changed names of S/R and CPP)
1146        and merged various ALLOW_ATM_WIND options
1147     only used with thsice pkg (in thsice_get_exf.F):
1148      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
1149        which are used when useStabilityFct_overIce=TRUE (= the default)
1150      - change default values of ice & snow emissivity and scale downward LW
1151        by ice & snow emissivity.
1152    o pkg/thsice:
1153     fix few little problems, in thsice_calc_thickn.F:
1154      - growth vertically (and not laterally) if iceFrac == iceMaskMax
1155      - melt only laterally if hIce < hThinIce (as the comments say)
1156      and in thsice_extend.F:
1157      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
1158      - start to form ice as soon as the minimum ice-volume is reachable.
1159     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
1160      and cpl_aim+ocn
1161    o pkg/kpp
1162     - move computation of surface related input fields to KPP into a new
1163       subroutine kpp_forcing_surf.F
1164     - remove wrong (within bi,bj loops) EXCH calls.
1165     - little cleaning (add argument myThid in last position, cvs header ...)
1166     - for now, fix conservation problem by exchanging KPPviscAz (may not
1167       be the best fix)
1168    o pkg/seaice
1169     - check for inconsistent evp parameter/cpp-flag combination
1170     - remove leftover errIO flat for obsolete name list error handling
1171    o OpenAD
1172     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
1173    
1174    checkpoint59a
1175    o pkg/seaice: some parameter clarifications and a little bit of clean up
1176    o pkg/thsice: rename run-time parameters:
1177       himin       -> hIceMin
1178       himin0      -> hThinIce
1179       hihig       -> hThickIce
1180       i0          -> i0swFrac
1181       transCoef   -> bMeltCoef
1182       frac_energy -> fracMelting
1183      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
1184       with default values (for now) that do not change the results.
1185      remove old version of thsice vars advection in pkg/seaice.
1186    o in FFIELDS.h:
1187      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
1188      - make pLoad & sIceLoad always available (but still only used if
1189         ATMOSPHERIC_LOADING is #define).
1190    o pkg/kpp: replaced _KPP_RL with _RL
1191    o bug fixes for vertical diffusivity computations when both KPP and
1192        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
1193        are no longer updating the vertical diffusivity array
1194        (passed as argument) but are (re-) setting those arrays.
1195    o pkg/seaice: fix bug in evp solver, while doing that
1196      - change (improve?) discretization of stress computations for both
1197        cgrid-lsr and evp solver
1198      - add a new routine to compute strain rates
1199      - the above changes lab_sea results
1200      - add no slip conditions for evp solver (off by default), lsr-version
1201        may follow
1202      - fix exchange for shear at Z-points (does not change lab_sea)
1203      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
1204        (to force the user to pick a time step since there is not "safe" way
1205        of choosing it)
1206      - add principal stress diagnostics
1207      - rearrange fields for evp a little to avoid having to call a: too many
1208        exchanges and b: exchanges for stress trensor components which we do
1209        not have.
1210      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
1211        of evp, complete rewrite for lsr case (latter is does not yet work
1212        in all cases)
1213    o pkg/kpp: add code to have mixing in shelf ice caverns
1214      - add myThid to all kpp routines (long overdue)
1215    
1216    checkpoint59
1217    o pkg/exf:
1218      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
1219        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
1220      - move exf header files from lower_case.h to UPPER_CASE.h ;
1221        add missing cvs Header & Name
1222      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
1223      - add namelist param. selectStressGridPosition, exf_monFreq
1224      - retire many _CLIM routines, and remove data.exf_clim
1225        + params moved to data.exf
1226        + climsst, climsss now handled by exf_set_gen, i.e.
1227          climss?period=0 refers to constant field,
1228          climss?period=-12 to monthly forcing
1229      - split up namelists in data.exf
1230    o pkg/seaice:
1231      - remove seaice_exch and seaice_exch_uv
1232      - remove superfluous exchange of theta
1233      - add myThid to seaice_budget_ocean/ice
1234      - add new interface for atmospheric wind forcing (C-grid only)
1235        + new routine
1236        + two new field (taux, tauy for stress over ice)
1237        + removed one global field (DAIRN) for C-grid case only
1238    o pkg/thsise
1239      - 2nd set of modifs for thsice adjoint in conjunction with exf
1240    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
1241    
1242    checkpoint58y_post
1243    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
1244      vertical diffusivity, similar to that in MOM4; turned on using
1245      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
1246      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
1247    o Added capability for 3D specification of background vertical diffusion
1248      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
1249      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
1250      "data" file that contains the 3D vertical diffusivity coefficients.
1251    o ice dynamics (pkg/seaice) with thsice thermodynamics:
1252      - add code within pkg thsice to advect & diffuse sea-ice fields
1253      similar to (and will replace) what has been added in  seaice_advdiff.F,
1254      but: - conserving Mass, Heat & Salt.
1255           - better when using non-linear advection scheme (not yet fully tested)
1256           - can also be used in atmospheric set-up (for now, only the diffusion).
1257    
1258    checkpoint58x_post
1259    o IO option for global-file compact format:
1260      - add options when generating topology (utils/exch2/matlab-topology-generator)
1261      - add I/O capability (pkg/mdsio).
1262      - adapt utils/matlab/rdmds.m to read this format.
1263      for now long-line format not yet supported by pkg/mdsio (& exch2).
1264    o shelfice: add a few diagnostics
1265    
1266    checkpoint58w_post
1267    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
1268      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
1269      (and replace horiVertRatio in NH code).
1270      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
1271                         and tutorial_plume_on_slope (sensitive to truncation)
1272    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
1273      directly to drive seaice model (C-grid only)
1274    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
1275     - reintroduce computation of wind from stress,
1276     - compute tau (in exf_bulkformulae.F) from windstress averaged to
1277       mass points to avoid tau = 0
1278     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
1279    o rdmnc.m: make it work with "global" files created with gluemnc
1280    o rdmnc.m : some improvements in dealing with singleton dimension
1281      (tested on all testreport mnc output files).
1282    o genmake2: disable pkg/profiles if netcdf test fails.
1283    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
1284    o move call to cal_readparms up to make calendar parameters/variable available
1285      to all packages
1286    
1287    checkpoint58v_post
1288    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
1289      useDynP_inEos_Zc tested.
1290    o pkg/exf: changes to properly interpolate/mask/scale initial fields
1291    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
1292      and portions thereof.  See read_cs.txt for description and examples.
1293    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
1294      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
1295      following the great-circle arc between those 2 points.
1296    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
1297      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
1298    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
1299     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
1300     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
1301     - still needs work (not working with some options ; efficiency to improve)
1302       and serious testing.
1303     - use this scheme for temperature & salinity in 2 advection test exp.:
1304       advect_xy & advect_xz, respectively.
1305    
1306    checkpoint58u_post
1307    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
1308    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
1309    o testreport: add option "-skipdir" to skip some test.
1310    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
1311      momentum calculation.
1312    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
1313    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
1314      remove checkpoint.F and the_correction_step.F (no longer used);
1315      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
1316    o add option (linFSConserveTr) to correct for tracer source/sink due to
1317      Linear Free surface
1318    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
1319    o pkg/thsice: fix reading mnc-pickups
1320    
1321    checkpoint58t_post
1322    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
1323    o pkg/mdsio:
1324     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
1325       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
1326       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
1327     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
1328     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
1329       either MDS_READ_FIELD or MDS_WRITE_FIELD )
1330     - new S/R (to replace MDSWRITEMETA), which allows to write more
1331       informations (variable names, time ...) to meta files.
1332     - modify rdmds.m to give back the meta file content.
1333    o pkg/diagnostics: change vertical interpolation to be safer, and more
1334       flexible (define p-levels to interpolate to in data.diagnostics);
1335      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
1336       diagnostic pointer.
1337    o pkg/seaice: more cleaning up of seaice_growth, added many comments
1338    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
1339    o fix multi-category seaice:
1340     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
1341       SEAICE_MULTICATEGORY
1342     - fix short wave heat flux
1343    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
1344       and allow to use EVP solver. Change forward lab_sea: test both EVP
1345       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
1346    o Initial check-in of lab_sea adjoint
1347      (very similar to natl_box_adjoint/code_seaice)
1348      * used C-grid and EVP solver
1349      * used KPP, GM/Redi
1350      * uses inAdExact=.TRUE.
1351      * gradient checks fail for both ADM and TLM
1352        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
1353        f.d. gradients actually seem more problematic than ADM, TLM gradients;
1354        issue is related to forward mismatch between g77 an ifort
1355    o pkg/seaice: overhaul of thermodynamics
1356     - growth.F and groatb.F are replaced by new routine seaice_growth.F
1357     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
1358     - move a few global fields out of SEAICE.h into seaice_growth.F and
1359       make them 2D (FICE/QNETO/ ...)
1360     - remove FO (it is the same as QNETO)
1361     - introduce a few local fields to avoid modifying external fields such
1362       as atemp, etc.
1363    
1364    checkpoint58s_post
1365    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
1366      changed exf_set_gen.F so that
1367        genperiod=0 means input file is one time-constant field and
1368        genperiod=-12 means input file contains 12 monthly means
1369    o CG2D: use pre-computed solver main-diagonal (stored in common block);
1370      this affects truncation error ; generate new output file for exp. which
1371      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
1372        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
1373        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
1374        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
1375        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
1376        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
1377    o start implementation of deep-atmosphere and anelastic formulation
1378    o verification: remove 2nd copy of input files and use script "prepare_run"
1379      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
1380    o mom_common/vecinv/fluxform: fix a few initialisation isssues
1381    o profiles: fix for multithreaded case
1382    
1383    o diagnostics: rename few diags:
1384      s/'PRESSURE'/'RCENTER '/g
1385      s/'TICE    '/'oceFreez'/g
1386      s/'TAUX    '/'oceTAUX '/g
1387      s/'TAUY    '/'oceTAUY '/g
1388      s/'SWFLUX  '/'oceQsw  '/g
1389      s/DIFx/DFxE/g
1390      s/DIFy/DFyE/g
1391      and add few ocean-forcing diagnostics:
1392      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
1393    o modifications to pkg/seaice/growth.F and budget.F, which change results of
1394      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
1395      as actual snow thickness.  It now refers everywhere to effective snow
1396      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
1397    
1398    checkpoint58r_post
1399    o modifications to pkg/seaice/growth.F, which change results of
1400      lab_sea experiment: fixes pertain to melting snow over open water, to
1401      masking EVAP under sea ice, and to using the correct AREA variable for
1402      computations of EVAP, PRECIP, HSNOW, and GHEFF
1403    o add ability to read bathy, salt, and theta using MNC (off by def)
1404    o add flooding algorithm and advection of HSNOW for pkg/seaice;
1405      both are turned off by default and do no change any results
1406    o seaice advection with pkg/thsice: a step toward the use of non-linear
1407      advection scheme, but #ifdef or commented out for now (requires more EXCH).
1408    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
1409      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
1410      in natl_box (affects results @ truncation level: update output.txt)
1411    o multi-threading and IO:
1412      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
1413      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
1414        (needed to work with SingleCpuIO): tested in all verif. exp.
1415    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
1416      affects the results (but none of the verification test uses this scheme).
1417    o Adding some pkg/diagnostics capability to pkg/seaice
1418      (will certainly be subject to changes)
1419    o ctrl: adding new control variables:
1420      lwflux, lwdown, evap, snowprecip, apressure, runoff
1421    
1422    checkpoint58q_post
1423    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
1424      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
1425      high_res_cube configuration by 4% on Columbia.
1426    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
1427      add (in global_with_exf/code) a version of EXF_INTERP_READ without
1428      dynamical allocation (seems to work in multi-threaded).
1429    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
1430      single CPU io) so that TAF does not have to see EESUPPORT.h
1431    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
1432    
1433    checkpoint58p_post
1434    o obcs: stop if obcs is used with useCDscheme = .true.
1435    o shelfice:
1436     - fix a sign error so that no slip at shelfice interface works
1437     - remove stop for combination non-hydrostatic code and shelfice. That does
1438       not mean, that the results are correct, but at least they are numerically
1439       stable
1440    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
1441    o added adjoint exch routined for all exch*3d* routines
1442      and updated flow directives
1443    
1444    checkpoint58o_post
1445    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
1446      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
1447    o change controling S/R for writing pickup file (new S/R do_write_pickup)
1448      and clean-up reading/writing of pickup files.
1449    o fix local version of read/write pickup (NH part) in rotating_tank/code
1450    o simplify EXCH interface:
1451     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
1452     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
1453    o added the regrid package
1454    o shelfice:
1455     - add a simple boundary layer scheme to reduce noise
1456     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
1457    
1458    checkpoint58n_post
1459    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
1460       local variable (not in common block).
1461    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
1462      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
1463      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
1464        to work with SingleCpuIO.
1465    o add "_d 0" to real constant of pkg/cfc subroutines ;
1466       update exp. cfc_exemple & tutorial_cfc_offline output files.
1467    o multi-threading and IO:
1468      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
1469        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
1470      - barrier before and after reading.
1471      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
1472      - avoid using MDS_WRITELOCAL for LAND pkg output.
1473      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
1474        common-block variables ; Allows multi-threading with master-thread IO.
1475    o change default MAX_NO_THREADS from 32 to 4 ;
1476      and stop cleanly when MAX_NO_THREADS is too small.
1477    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
1478    
1479    checkpoint58m_post
1480    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1481       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1482    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1483       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1484       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1485    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1486        add MITgcm_tutorials (= code + all the tutorials)
1487    o ecco, option to compute cost for total ssh (mean+anom)
1488    o consistent with addition of ptracer and ssh in pkg/profiles
1489    o profiles: adding ptracer and ssh
1490    o testreport: change multi-test output-file name
1491      (from output.txt.{name} to output.{name}.txt)
1492    o profiles: now ok for mutli-tiles case
1493    o seaice: add 4 parameters for different advection schemes for area,
1494      (effective) seaice thickness, enthalphy, and snow height. Their default
1495      is the standard parameter SEAICEadvScheme
1496    o calc_gw:
1497     - add cosFacU in zonal viscous flux (harmonic.visc.).
1498     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1499       of tutorial_plume_on_slope.
1500    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1501    o calc_gw: true flux-form, account for horizontal grid spacing.
1502      update rotating_tank results, but not plume_on_slope (affected at
1503      truncation level, 11 digits).
1504    
1505    checkpoint58l_post
1506    o calc_gw:
1507     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1508     - remove side-drag for now (need to fix it); update plume_on_slope results.
1509     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1510    o commit code to make SST/SSS weights spatially variable
1511      (based on either variable in-situ or variable initial T/S weights)
1512    o pkg/ecco:
1513      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1514        now based on horizontally varying weights wthetaLev, wsaltLev
1515      * cost_averagesflags now returns year indices in addition to day, month
1516      * sflux balance is performed on annual basis
1517        (sflxumm, sfluxmm2, bal_sfluxmm)
1518      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1519        including separate counting and multipliers
1520    o pkg/rbcs
1521      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1522    
1523    checkpoint58k_post
1524    o testreport:
1525     - always build in dir. "build" (if not there, mkdir build instead of building
1526       & running in input)
1527     - run in dir run (if it exists), in build otherwise.
1528     - call prepare_run (if input/prepare_run exists)
1529     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1530    o pkg/exf modifications to interpolation and rotation routines for more
1531       reasonable treatment of North Pole singularity: for tracers North Pole
1532       value is set to northernmost zonal-mean value, for zonal velocity it is
1533       set to zero, and for meridional velocity it is set to northernmost value.
1534    o pkg/exf/exf_check_range.F
1535     - add tile index to diagnostics and move stop statement to the very
1536       end of the routine.
1537    o pkg/diagnostics: (diagnostics_main_init.F)
1538      define title of isomorphic variables according to the current config.
1539    o pkg/thsice with pkg/seaice dynamics:
1540    - fix domain of computation (interior only, required for exf) and do exchanges
1541    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1542    o towards a standard way of dealing with multi-threading in MONITOR
1543      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1544    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1545       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1546    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1547    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1548    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1549       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1550    o tracer advection:
1551     - clean-up and simplify calc_common_factors.F
1552     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1553       advection subroutine (but still not used within DST advection S/R)
1554    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1555    
1556    checkpoint58j_post
1557    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1558      from file (collects calls previously in FORWARD_STEP)
1559    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1560    o adjoint store dir. adjusted accordingly
1561    o genmake2
1562      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1563    
1564    checkpoint58i_post
1565    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1566      on wind stress (SEAICEstressFactor defaults to 1.)
1567    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1568      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1569    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1570      on CS-grid: no longer loosing mass.
1571    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1572    o pkg/ggl90: fix sloppy output and fix a bug
1573    o pkg/seaice: added SEAICEuseEVPpickup parameter
1574      - Set to false in order to start EVP solver with
1575        non-EVP pickup files when using SEAICEuseEVP
1576      - fix sign error in diffusion in seaice_calc_rhs
1577    
1578    checkpoint58h_post
1579    * Modifications for bottom topography control
1580      o replace hFacC by _hFacC at various places
1581      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1582      o add non-self-adjoint cg2d_nsa
1583      o update autodiff support routines
1584      o re-initialise hfac after ctrl_depth_ini
1585      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1586    * Adding verification for 5x5 box (4-layer) bottom topography control
1587    
1588    checkpoint58g_post
1589    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1590       used for mean seasonal cycle, mean diurnal cycle); add an example
1591       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1592    o pkg/ggl90:
1593      - add parameter (minimum surface kinetic energy)
1594      - fix bug (avoiding division by zero)
1595    o couple pkg/thsice to pkg/seaice:
1596      - modify advection in seaice to accomodate new scalar fields to be advected
1597      - only muliDimAdection scheme work with seaice/thsice
1598      - mapping of thsice-variables to seaice-variables, back and forth
1599      - does not break the verification experiments, but does not give the
1600        desired results either
1601    o pkg/seaice
1602      - make (default) second order advection a bit less confusing?
1603    
1604    checkpoint58f_post
1605    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1606      to pkg/seaice):
1607      - new routines thsice_map_exf and thsice_get_exf provide the interface
1608      - add an additional formal parameter to thsice_solve4temp
1609    o pkg/exf:
1610      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1611      - correct Stefan-Boltzmann constant
1612      - new parameter for longwave surface emittance
1613      - separate some stuff from exf_bulkformulae into new routines  
1614        exf_radiation, exf_wind
1615      - add new parameters and constants: longwave emissivity for ocean, ice
1616        and snow, evaporation parameters over ice
1617      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1618        either wind from stress or stress from wind
1619    o pkg/thSIce:
1620    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1621    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1622       and THSICE_CALC_THICKN
1623    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1624    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1625      to make debugging easier.
1626    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1627    o pkg/bulk_force:
1628      - clean-up comments and parameters ;
1629      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1630    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1631      generate new output for test-experiment: aim.5l_cs.thSI
1632    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1633      testreport accordingly
1634    
1635    checkpoint58e_post
1636    o SEAICE_CGRID adjoint done
1637    o R_STAR adjoint implemented.
1638      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1639      * need to sort out init. of h0facc, etc.
1640    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1641      to be able to use it in pure forward.
1642    
1643    checkpoint58d_post
1644    o upgrade simple test-experiment to tutorial example:
1645     step.1: duplicate the experiment and (step.2) will remove the old copy.
1646      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1647      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1648      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1649      tutorial_global_oce_biogeo    <- copy of dic_example
1650      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1651      tutorial_plume_on_slope       <- copy of plume_on_slope
1652      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1653      tutorial_global_oce_optim     <- empty for now (David ?)
1654      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1655     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1656    o correct a sign problem in cost_scat.F
1657    o obcs and ptracers: fix boundary conditions for advections schemes
1658      with larger stencil
1659    o thsice adjoint: start
1660    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1661      completeness
1662    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1663      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1664    o ptracers adjoint:
1665      * avoid extensive recomputatations
1666      * fix missing re-init. of gptr (missed by TAF)
1667    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1668      me to turn off the excessive output to STDOUT that this package produces
1669    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1670      and add those terms in Vector-Invariant formulation.
1671    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1672      if the control period (xx_hfluxperiod etc) is 0
1673    o in profiles pkg, clean routines and fix details
1674    o in ecco pkg, reading ssh data:
1675      fix problem in case the model does not start at iter0=0
1676    o fix mnc-pickup/restart for ptracers
1677    o new package prifiles:
1678      code to compute profile-based cost by Gael Forget
1679      (modifs in ecco, ctrl, autodiff)
1680    o Benign bug fix in initialization (spotted by M. Mazloff) of
1681      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1682    
1683    checkpoint58c_post
1684    o adjoint: finish NLFS adjoint and provide reference output in
1685      verification/global_ocean.90x40x15/results_ad_nlfs
1686    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1687      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1688      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1689      with SEAICE_CGRID defined.
1690    o move calendarDumps from "data" to "data.cal" and clean-up the code
1691      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1692    o add useEXF & useCAL flags (for now, set in hard-coded way)
1693    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1694      (were missing in NH mode, and wrong in quasihydrostatic mode).
1695      waiting for Chris updated version of calc_gw to add those CALLs.
1696    o fix bug in quasihydrostatic S/R ;
1697      add a test for this option: global_ocean.90x40x15.qshyd
1698    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1699      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1700    o add on/off flag useOffLine for package OFFLINE
1701    o seaice:
1702      - modify advection so that it works also on the C-grid
1703      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1704        problem in multi-tile runs with C-grid
1705      - add flags for clipping ice velocities and/or masking solver forcing
1706      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1707        C-grid solver
1708      - added a few comments to seaice_diffusion.F
1709      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1710        are now exclusive)
1711      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1712        required re-ordering the code a little:
1713       + make DAIRN global variable (defined in SEAICE)
1714       + move computation of the viscosities eta and zeta into a new separate
1715         routine (because I need to recompute them in seaice_ocean_stress.F)
1716    
1717    checkpoint58b_post
1718    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1719      update output.txt of exp. aim.5l_cs.thSI
1720    o various mnc cleanups and improvements:
1721      + shrink lookup tables by factor of ~4
1722      + better error reporting when running out of lookup space
1723      + able to handle longer path/file names (up to 500 chars)
1724    o adjoint:
1725      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1726      - TBD: "hidden" mom_vecinv recomp. in dynamics
1727    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1728     (allow to differentiate between forcing components using new integer flags:
1729      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1730     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1731    o ecco
1732      - enable trend removal from SSH anomaly obs.
1733    o adjoint
1734      - a fix for PmEpR when #undef EXACT_CONSERV
1735      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1736      - try to fix "hidden" recomp. in forward_step for NLFS
1737        (NLFS seems broken sometimes after I checked it in)
1738    o seaice:
1739     - add c-grid version of the dynamic solver:
1740       + three new routines that are the c-grid substitute lsr, dynsolver
1741         and ostres
1742       + put a few fields that were local to dynsolver into global common
1743         blocks, so that I can move the computation of stresses etc into
1744         seaice_lsr (saves coding but may break the adjoint).
1745     - replace more hardwired parameters by runtime parameters
1746     - add ice masks that mask the rhs of the implicit solvers where there
1747       is no ice (commented out in seaice_dynsolver, because i am not sure
1748       if this works properly), eventually this should replace the clipping
1749       of ice velocities in seaice_dynsolver to +/-40cm/s.
1750    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1751      include it only where its needed
1752    o move balancing of fluxes before the call of external_forcing_surf
1753    o seaice:
1754      - correct units of turning angles (now they are really in degrees)
1755      - move computation of GWATX/Y out of main routine into dynsolver
1756      - initialize GWATX/Y in seaice_init
1757    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1758      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1759    o seaice: add runtime flags for turning angles (default to zero)
1760    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1761      and trend from exf forcing and ctrl control adjustments
1762    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1763      (since checkpoint57x_post)
1764    o change the default rotation period to 86164.s = the Earth rotation
1765    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1766      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1767    o seaice advection: add code for choosing between the default (2nd order
1768      central differences) and multiDim advection schemes provided by
1769      pkg/generic_advdiff
1770    o seaice:
1771      - removed all references to SEAICE_GRID.h fields from
1772        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1773        (cubed-sphere configuration will change a little)
1774      - grid computations in seaice_init are obsolete now.
1775      - cleaned up code a little so that is easier to read (hopefully).
1776      - added new (better?) discretizations of default advection and diffusion
1777        (turn on with SEAICEuseFluxForm)
1778      - replace 1 in 3d global fields by kSurface in growth.F
1779      
1780    checkpoint58a_post
1781    o seaice:
1782      - bug fix in advect.F
1783    o shelfice:
1784      - separate shelfice load anomaly from pload (breaks with time
1785        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1786        Its default is 0., but it may be computed more cleverly from (unknown)
1787        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1788        done offline. A good approximation of the pressure load anomaly is
1789        necessary to avoid large initial adjustment processes underneath
1790        deep-reaching shelfice.
1791      - small fix in ISOMIP shelfice_thermodynamics
1792      - add more sophisticated thermodynamics of Hellmer (1989), this is
1793        now the default
1794      - give a few constants more intuitive names
1795    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1796      if bulk formulae are used in long integration (especially EmPmR). Turn
1797      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1798      if balancePrintMean, the imbalance that is substracted is printed to
1799      STDOUT.
1800    o fix bug (typo) in obcs_apply_eta.F
1801    o add a new package shelfice which enables us to model the circulation
1802      underneath shelf-ice with draughts of hundreds of meters.
1803     - works
1804     - to do: + include improved thermodynamics
1805              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1806                instead of new field kTopC
1807              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1808                instead of new field R_shelfIce and new code in ini_depth.F
1809                and ini_mask_etc.F?
1810              + adjust vertical mixing schemes?
1811    o seaice pkg:
1812     - add a cpp-flag to include a simple formula for a salinity dependent
1813       freezing point of sea water at the surface
1814     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1815       meridional stresses are now different (and hopefully correct)
1816    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1817       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1818       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1819    o pkg/diagnostics: add options and parameters for regional-statistics
1820       diagnostics ; define regions by reading a region-mask from a file
1821       (might add other options later)
1822    o pkg/bulk_force:
1823     - add option and parameters to use AIM surface-flux formulae.
1824     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1825       others forcing fields (defined in PARM05, parameter file "data") are loaded
1826       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1827     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1828     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1829     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1830       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1831     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1832    
1833    checkpoint58
1834    o add "--embed-source" option to genmake2 which, when the supporting
1835      tools can be compiled (as determined by genmake2) will turn on the
1836      embed_files package which then embeds the entire MITgcm source code
1837      (*.[fFhc] + Makefile) used for the build within the executable
1838      - requested by CNH but off by default
1839      - adds a paltry <9MB to the mitgcmuv executable in most cases
1840      - only writes the output when useEMBEDSRC in eedata is true
1841    o clean up 3-dim. relaxation codes:
1842      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1843      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1844      * Thanks to Tom Haine for testing!
1845    
1846    checkpoint57z_post
1847    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1848      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1849    o fix the pickup behavior for obcs in combination with ptracers
1850    o fix a bug in ptracers_external_fields_load
1851    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1852      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1853    o transfered surface NH pressure to eta field (if exactConserv).
1854    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1855         and update lab_sea output.txt file.
1856    o completing 3-dim. relaxation code: additional term
1857         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1858      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1859      * At compile time, in "EXF_OPTIONS.h" set
1860          #define  ALLOW_CLIMTEMP_RELAXATION
1861          #define  ALLOW_CLIMSALT_RELAXATION
1862      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1863          tauThetaClimRelax3Dim = 15552000.0,
1864          tauSaltClimRelax3Dim  = 15552000.0,
1865      * 3 cases:
1866          1) Use a constant-in-time 3-dim. field
1867          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1868          3) Real-time relax. to time-evolving prescribed field
1869    o Adding Laplacian-type smoothness constraint on
1870      initial and boundary (forcing) controls (ic, bc)
1871      * enable at compile-time via
1872        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1873      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1874      * Absolute scale somewhat unclear so far
1875      * no area weighting was included since no other cost term does so far
1876    
1877    checkpoint57y_post
1878    First step for a NLFS adjoint
1879    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1880    o new init. routines for calc_r_star, calc_surf_dr
1881    o still need to deal with ini_masks_etc
1882    o testreport seemed happy
1883    checkpoint57y_pre
1884    
1885    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1886    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1887    o add new offset feature to offline pkg (plus minor cleanup)
1888    o cfc fixes for final year of integration
1889    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1890      be in GCHEM_OPTIONS).
1891    
1892    checkpoint57x_post
1893    o fix testreport Pb in multiple test experiment.
1894    o cleanup our namelist syntax in verification:
1895      - make it more F95 standards compliant (some work still needed)
1896      - allows the vast majority of our tests to work with gfortran
1897    o Non-Hydrostatic:
1898     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1899     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1900    o Allow to apply AB on T,S rather than on AB(gT,gS):
1901     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1902     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1903       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1904     - need a "clever" read_pickup to restart from the other AB formulation
1905    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1906    o remove some unused variables (reduces number of compiler warnings)
1907    o adjoint
1908      * Disable useVariableViscosity for adjoint for time being
1909        (there are a number of extensive recomputations)
1910      * Initialize certain variables needed for adjoint
1911    
1912    checkpoint57w_post
1913    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1914                 fix the singleCpuIO RS version of MDSWRITEFIELD
1915       and add a WARNING if using globalFiles=T with multi-processors.
1916    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1917      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1918    o tracer advection scheme:
1919      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1920       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1921       was not very convenient).
1922      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1923       (further tests needed for the implicit DST & Flux-Limiter schemes).
1924    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1925      and sRef for convenience, handy, when you want to initialize
1926      ptracers in a large domain with a constant non-zero value. Also,
1927      untangle ptracers_init.F a little.
1928    
1929    checkpoint57v_post
1930    o change dome exp. to use variable viscosity in side-drag terms.
1931    o remove all the files from the cfc_offline test since they are now
1932      incorporated into tutorial_cfc_offline which has been producing
1933      identical results for a few days of testing
1934    o add new parameter: sideDragFactor to enable half-slip-side BC
1935      and change side-drag S/R to use viscosity from mom_calc_visc
1936      (can switch back by setting sideDragFactor=0.); affects results at
1937      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1938       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1939    o vorticity & strain are now computed without masking, to account for
1940      no-slip-side BC in variable viscosity calculation ; mask is applied
1941      anyway later on, before computing advection/coriolis terms.
1942    o modify exp4 to test new obcs support for reading from external files
1943      and for passive tracers
1944    o fix behavior of ptracers_monitor when monitor output is written to a
1945      netcdf-file; still not independent of monitor.F (writes in the same
1946      file).
1947    o change default value of tRef (put a uniform, meaningful value for ocean
1948      & atmos) and initialize sRef (was missing, as Martin mentioned).
1949    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1950      to be proportional to enstrophy dissipation length.  Thus,
1951       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1952      This is now consistent with Smagorinsky and with the manual.
1953    
1954    checkpoint57u_post
1955    o OBCS and PTRACERS: add open boundary support for passive tracers
1956      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1957        OB-values from file; this is not different from the way theta and salinity
1958        are treated
1959      - however, Orlanski-radiation conditions are not supported, and the model
1960        will stop if you use pTracers and Orlanski at the same time.
1961      - beefed up the rountine obcs_external_fields_load: now only those open
1962        boundary values are overwritten with values from files for which there
1963        are really files, otherwise the OB-fields remain untouched. This makes
1964        it possible to use different OBs at different ends of the domain (as
1965        with EXF)
1966    o reduce number of exch calls in shap_filt (s2).
1967    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1968      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1969    
1970    checkpoint57t_post
1971    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1972    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1973      same truncation, independent of the face number: affects affects several
1974      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1975    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1976      note that biharmonic viscosity + no-slip was not tested in any experiment.
1977    o fix bug in non-linear free-surf side-drag ; generate new output for
1978      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1979    o make mnc honor the writeBinaryPrec flag for most kinds of output
1980    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1981    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1982      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1983    o add brackets in multi-terms sum to get same truncation, independent of
1984      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1985      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1986  o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax  o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1987    and viscA4Remax, which allow one to limit the minimum viscosity by specifying    and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1988    a maximum grid-scale Reynolds number.  Also, changes all length calculations    a maximum grid-scale Reynolds number.  Also, changes all length calculations
# Line 693  o add two new packages Line 2673  o add two new packages
2673    - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme    - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2674    - these scheme operate in a similar manner as KPP (without ghat, of    - these scheme operate in a similar manner as KPP (without ghat, of
2675      course), however there is only one diffusivity that is used for both      course), however there is only one diffusivity that is used for both
2676      temperature and salinity (and passive tracers)ç      temperature and salinity (and passive tracers)
2677  o add offline package  o add offline package
2678  o add "verification/dic_example" which contains a dic-gchem-ptracer setup  o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2679    provided by Stephanie Dutkiewicz    provided by Stephanie Dutkiewicz

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