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revision 1.390 by jmc, Sun Nov 21 22:22:31 2004 UTC revision 1.1138 by jmc, Tue Jun 30 16:38:02 2009 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    checkpoint61s
8    o pkg/exch2 (exch2_rxN_cube*):
9       remove last BARRIER (no need to synchronise after getting data from shared
10       buffer (get) as long as any change to buffer (put,recv) is between BARRIER)
11    o change tiling of natl_box (from 2 to 4 tiles) to get it tested with MPI+MTH
12      and generate new output (for the 2 tests) using default rotationPeriod.
13    o pkg/exch2:
14      - always call exch2_*_cube, not exch-1 anymore, if useCubedSphereExchange=F
15        (was already the case with AUTODIFF_EXCH2 defined)
16      - add bj in exch2 arrays and S/R.
17      - can now use pkg/exch2 for regular (non CS) set-up; switch test experiment
18        MLAdjust to exch2 (identical results except with MPI -> truncation diff);
19    o add pkg/longstep for ptracer timestep a multiple of U/V/T/S timestep
20      - adds deltaT argument to the subroutines TIMESTEP_TRACER DWNSLP_APPLY
21        GAD_ADVECTION GAD_CALC_RHS GAD_IMPLICIT_R GAD_SOM_ADVECT
22      - verification experiment natl_box.longstep
23    o build_options: ifort+mpi_aces optfile (following Constantinos advise):
24      allow different versions of ifort (8 or 9) and different versions
25       of mpi (mpich or mpich2) to be used with the same optfile.
26      requires to load a netcdf module and set MPI_INC_DIR (see comments inside
27       optfile). Change testing scripts (example_scripts/ACESgrid) accordingly.
28    o pkg/seaice:
29      fix previous modif (3-level field removed) for old-pickup reading
30    
31    checkpoint61r
32    o pkg/seaice:
33     - clean up the 3-time levels of UICE,VICE,HEFF,AREA in three steps:
34      1. introduce fields for time step (N-1)
35      2. do not use levels 2 and 3 anymore (but keep them)
36      3. replace 3D versions of UICE,VICE,HEFF,AREA by 2D versions. This
37         includes changes to pkg/thsice/thsice_get_velocity.F,
38         model/src/external_forcing_surf.F, pkg/obcs/obcs_apply_seaice.F, and
39         pkg/obcs/obcs_apply_uvice.F.
40     - completely remove code for leap-frog time stepping for second order
41       advection
42     - adjusted adjoint accordingly;
43       gradient checks have improved by an order of magnitude!
44    
45    checkpoint61q
46    o pkg/seaice: fix bug in free slip boundary conditons for LSOR solver
47     - the boundary conditions along open boundaries are unclear, because the
48       associated masks are set to zero and are thus treated as closed when
49       applying the slip-boundary conditions.
50     - move initialisation of grid variables from seaice_init_varia to _fixed
51    o adding doc/diags_changes.txt
52    o model/src:
53      do_the_model_io: rename few pkg S/R which are called from do_the_model_io,
54       to avoid "_diags" naming if no relation to pkg/diagnostics.
55      ini_theta,ini_salt: fix (at least compile the code) reading from NetCDF
56       file and only call PLOT_FIELD_XYZ if debugMode=T.
57      remove few PLOT_FIELD_XY calls outside initialisation.
58      remove few unnecessary BARRIER.
59    o pkg/salt_plume: add SaltPlumeSouthernOcean to allow disabling
60      of salt_plume package in Southern Ocean
61    o pkg/thsice:
62     - fix hOceMxL in overlap (needed for sea-ice advection);
63       update output of experiment global_ocean.cs32x15.icedyn.
64    o pkg/seaice:
65     - make the (placeholder-)tracer IceAge a little more meaningful
66      by avoiding ridging of age due to convergent ice flow
67     - add diagnostics for surface temperature, atmospheric and oceanic
68       heat flux, and atmospheric and oceanic ice growth
69    
70    checkpoint61p
71    o eesupp (global_max & global_sum):
72     - add one more element to buffer (start at index 0) for GL_MAX/SUM output;
73     - remove starting & endding barrier (no longer needed)
74    o pkg/mdsio, writelocal:
75       works also in multi-threaded when LOCBIN_IO_THREAD_SAFE is undefined
76       (remove the STOP): uses shared buffer IO to store data from all threads
77       and then let master-thread write nThreads tiles.
78    o pkg/mdsio (read/write field):
79     - tiled IO done in 1 piece (all levels at a time);
80     - new header file "MDSIO_BUFF_3D.h" with 3-D buffers.
81     - multi-threaded: allow to read/write local (non-shared) array
82       (was already working with singleCpuIO ; now works also without);
83       => no longer needs barrier call after reading a file (added inside
84       mds_read/write field).
85     - move barrier calls outside gather/scatter_2d to mds_read/write_field
86    o pkg/obcs/exf
87      - exf_getffieldrec.F: add a few ". _d 0" and
88                            add code to catch the case fldperiod = 0.  
89      - obcs_precribe_read.F: change if statements so that they match
90                              the variable type (_RL)
91      - add a separate exf_iprec_obcs to exf_set_obcs (by default equal to
92        exf_iprec) as part of namelist EXF_NML_01
93    o pkg/mdsio:
94      - read/write tiled (local) files: read/write 1-level tile chunk at a time
95        (instead of segment of length sNx); expected to speed up tiled IO.
96    o pkg/exch2:
97      - take buffer copy from/to array out of S/R exch2_send/recv into new
98        S/R exch2_put/get ; Exch of local variable now works with MPI+MTH
99        (tested by removing commom block statement in SOLVE_FOR_PRESSURE.h).
100      - ad version of send/recv no longer needed (but needs exch2_ad_put/ad_get)
101      - simplify argument list of S/R exch2_get_uv_bounds and exch2_get_scal_bounds
102        (which replaces exch2_get_recv_bounds & exch2_get_send_bounds) by
103        including Topology header file (and common blocks).
104      - implement EXCH_IGNORE_CORNERS in scalar exchange (rx1);
105        remove 2nd exch call in exch2_s3d_rx (no longer needed).
106      - document S/R arg. list (+ update some comments)
107    o pkg/seaice:
108      - added SEAICE_CLIM_AIR code, which permits modulation of surface air
109        temperature and humidity over sea ice based on climatological values.
110      - clean up computation of Hibler+Bryan (1987) stress coupling for the case
111        of LSR (this change is expected to change the results slightly because now
112        it uses slightly difference moduli from the second last LSR solution, but
113        that is more consistent with the stress computations; this part of the code
114        is not tested in the verification experiments)
115      - fix diagnostics for flux of ice in case of B-grid
116      - turn strain rates eij and press into global fields within global
117        common block in SEAICE.h for more straighforward diagnostics
118      - fix diagnostics for principal stress components, press, zeta, eta
119        to give something meaning full
120    o change tiling of global_ocean.cs32x15 (12 tiles, 32x16) and generate
121      new output (all 4 tests) using default rotationPeriod.
122    o pkg KPP:
123      - add flag (LimitHblStable) to avoid limiting BL depth under stable conditions
124      - fix vertical indices in RI_IWMIX (match between KPP grid from 0 to Nr+1
125        and normal grid from 1 to Nr)
126    o Fix computations of L4rdt in mom_calc_visc.F
127    o eesupp:
128      new S/R ALL_PROC_DIE (like EEDIE, without irrelevant threads err msg):
129      should be called before a "stop" if we know that all process are going
130      to stop; if one Proc does call this S/R, will hang in MPI_FINALISE.
131    
132    checkpoint61o
133    o pkg/exch2: change check_depths to issue just a warning (instead of error+stop)
134    o model/src/ini_curvilinear_grid.F:
135       compute angleSin/CosC when they are not read from a file
136    o pkg/seaice:
137       add pseudo time stepping for LSOR
138    o pkg/exch2:
139       temporary fix for exch2_s3d_rx; update results of exp. hs94.cs-32x32x5.impIGW
140    o pkg/seaice:
141       Adding separate sea ice albedo, drag coefficients, and HO in Southern
142       Ocean from those in Arctic Ocean.  See *_south in SEAICE_PARAMS.h
143    o SingleCpuIO:
144       fix bug put before chkp61n (May 11), when more than 2 MPI cpu are used.
145    o pkg/seaice:
146       put exchanged variable in (local) common block for MPI+Multi-Threads
147       to work (necessary with exch1, and for now with exch2 too).
148    o verification: to get more experiments tested with mpi, mth and mpi+mth,
149      change tiling of:
150       aim.5l_Equatorial_Channel, aim.5l_LatLon, dome, exp4, global_ocean.90x40x15,
151       hs94.cs-32x32x5, MLAdjust, offline_exf_seaice & tutorial_plume_on_slope
152      update output of exp:
153       exp4, global_ocean.90x40x15(+.dwslp), MLAdjust(all 5),
154       tutorial_plume_on_slope and hs94.cs-32x32x5 (use default rotationPeriod)
155      + ideal_2D_ocean: use default rotation period + test Global_Sum_SINGLECPU
156                       (note: output.txt generated on faulks using only 1 tile)
157    o eesupp & mdsio (SingleCpuIO):
158     - remove MISSING_TILE_IO (from MDSIO_OPTIONS.h), replaced by run-time
159       parameter "W2_useE2ioLayOut" (read from file "data.exch2").
160       Note: was not effective for globalFile & useSingleCpuIO=F; now fixed.
161     - move MDSIO_SCPU.h (pkg/mdsio) to EEBUFF_SCPU.h (eesupp/inc).
162     - fix GLOBAL_SUM_SINGLECPU when using Exch2; re-use same buffers and same
163       gather/scatter S/R as with SingleCpuIO (=> 1 less 2D global RL array).
164    o pkg/exch2:
165     - new code to set-up W2-Exch2 topology (replace matlab-topology-generator):
166       read parameter file "data.exch2" if it exists; otherwise try default regular
167       cube without blank-tile; new header file "W2_EXCH2_SIZE.h";
168     - update matlab-topology-generator (exch2_setup_cs6_print.m) to be compatible
169       with new code (not to be used, just as a backup solution).
170     - add examples (e.g., for lat-lon-cap_120) of parameter file "data.exch2"
171       in utils/exch2/input.
172    
173    checkpoint61n
174    o eesupp & mdsio (SingleCpuIO):
175      - move mapping to global io-buffer inside gather_2d/scater_2d: this save
176        memory (1 less 2D global RL array); skip 1 buffer copy; and only send/
177        receive real*4 array (instead of real*8) to read/write 32.bit files.
178        (new template for gather_2d/scater_2d, new set of S/R MDS_PASS_R4,8toRL,S
179         and remove new mapping S/R)
180    o pkg/mdsio: in preparation for topology-generator within pkg/exch2:
181      - Change declaration of SingleCpuIO buffer, reduced to only 1 dim.:
182        xyBuffer_size, which is set to W2_ioBufferSize from W2_EXCH2_PARAMS.h
183        when using exch2. Add S/R to map global io-buffer to global model array.
184      - uses exch2_global_Nx,y instead of exch2_domain_nxt,nyt.
185    
186    checkpoint61m
187    o write_utils : change WRITE_1D_R8 to WRITE_1D_RL
188      and add 3 other S/R for other types (R4,R8,RS).
189      Change calls to WRITE_0D/1D_R[4,8,S,L] to match the type of argument.
190    o eesupp/inc/CPP_EEMACROS.h (EXCH & GLOBAL_SUM/MAX macros):
191     - ensure suffix (_R4,_R8,_RS,_RL) correspondance between macro and S/R ;
192     - reduce number of macro definitions (keep only those which are used);
193       can always call directly the corrresponding S/R if needed.
194     - everywhere in the code: change macros (EXCH & GLOBAL_SUM/MAX) suffix
195       _R4/_R8 to _RS/_RL when applied to _RS/_RL variable.
196     Fixed wrong type of arg in:
197       atm2d/put_ocnvars.F cheapaml/cheapaml.F ocn_compon_interf/ocn_apply_import.F
198       ctrl/ctrl_map_ini_ecco.F seaice/seaice_do_diags.F seaice/seaice_model.F
199     To fix: global_sum of var in common block is wrong (multi-threaded) in:
200       dic/dic_atmos.F ebm/ebm_area_t.F ebm/ebm_zonalmean.F sbo/sbo_calc.F
201     To fix: aim_v23/aim_do_co2.F (BARRIER & GLOBAL_SUM within bi,bj loops)
202    o adjustment.cs-32x32x1: test "blank tiles" when compiling with mpi; 2nd
203      "nlfs" mpi test is going to stop when checking for unconnected tile egdes.
204    o eesupp/src: new S/R to stop everyone when 1 (or more) Proc. find an error
205    o pkg/exch2: new S/R EXCH2_CHECK_DEPTHS to check that unconnected tile
206      edges are closed (zero depth); might happen with "blank tiles";
207      for now, disabled if using OBCS.
208    o tools/gemake2: delete modifs from March 27-29 2009 (with option "-mpi":
209      link *_mpi files from "MODS" dir) to return to a strait-forward behavior.
210    o move read_write.F to write_utils.F ; new parameter (maxLengthPrt1D)
211      to reduce length of 1.D array print in STDOUT.
212    o adjustment.cs-32x32x1: changed to oceanic test with 1 continent
213      + use 48 tiles (16x8): this will allow to test "blank tiles".
214    o start to test MPI + multi-threaded (change testreport to skip tests
215      where number of tiles do not match).
216    o genmake2: add option "-omp" to turn on Open-MP ;
217      passed to testreport (if using -mth) ; merge few (*+mth) optfiles.
218    o pkg/exch2 (+ utils/exch2): ignore blank tiles (instead of removing them)
219      and keep the original tile numbering. Note: compatible with old
220      W2_EXCH2_TOPOLOGY.h & w2_e2setup.F topology files.
221    
222    checkpoint61l
223    o Overlaps had been forgotten in calculating ijk keys : fixed
224    o fix cyrus makedepend for gcc 4.4
225    o experiment fizhi-cs-aqualev20:
226      switching to new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE)
227      and generate new output. Note: new output is much closer to the old
228      one (v1.8) generated with pgf77 -O2 on Mar 14 2007 than it is from
229      the previous one (v1.9) generated with pgf77 -O0 on Jun 13 2007.
230    o pkg/fizhi:
231     - change to avoid indices going deliberately over array-bounds
232     - remove unnecessary MPI stuff
233     - perpetual spring equinox with "#define FIZHI_USE_FIXED_DAY"
234     - new version of S/R GETPWHERE available with #define TRY_NEW_GETPWHERE:
235       does not go over array-bounds and therefore returns reliable output.
236     - in fizhi_driver.F & fizhi_turb.F, fix "get_alarm" calls:
237       this S/R has 4 output arguments, which are used inside "get_alarm";
238       when it is called with the same variable "ndum" in place of several
239       output arguments, this produces weird side effect inside "get_alarm"
240      (e.g., datein=dates(n) is overwritten by timein=times(n) since both
241       datein & timein, resp. 2nd and 3rd arg., are pointed to the same "ndum"
242       address) and produces error.
243    o tools/gemake2: (March 27-29 2009)
244      with option "-mpi": link *_mpi files from "MODS" dir (this is what
245      testreport does).
246    o lab_sea experiment: change from 2x1 tiles to 2x2 tiles and regenerate output
247    o pkg/seaice: fix bug in new version of S/R SEAICE_LSR.F:
248       update lab_sea.lsr & lab_sea.salt_plume results
249    o pkg/seaice:
250      Major overhaul of the LSOR solver: change discretization from original
251      finite differences to finite volume. The old routine is still in the
252      file seaice_lsr.F and can be turned on with the CPP-flag
253      SEAICE_OLD_AND_BAD_DISCRETIZATION
254      Along with this change, the discretization of the strain rates is changed.
255      The same flag turns on the old discretization in seaice_calc_strainrates.F
256      All verification experiments with seaice are affected (except for
257      seaice_exf_offline); global_ocean.cs32x15/input.icedyn recovers the old
258      results by setting the above flag.
259      Further changes involve changes in defaults:
260      - ALLOW_FLOODING is defined and turned on by default
261      - SEAICEadvSnow = .true. is now the default
262      - SEAICEadvSalt = .true. is now the default
263      - SEAICEadvAge  = .true. is now the default
264      - SEAICE_clipVelocities  = .false. is now the default
265                                         (as per J. Zhang's recommendation)
266      - B-grid, and thus not tested: SEAICE_TEST_ICE_STRESS_1/EXPLICIT_SSH_SLOPE
267        is defined, SEAICE_TEST_ICE_STRESS_1 is renamed into SEAICE_BICE_STRESS
268      - seaice_growth: replace computation of UG by a simple copy from wspeed
269    
270    checkpoint61k
271    o pkg/seaice: a few bug fixes mostly concerning the metric terms:
272      seaice_lsr: fixed a few metric terms,
273                  affects lab_sea.lsr, lab_sea.salt_plume, seaice_obcs
274                  add more debugging diagnostics
275      seaice_evp: removed superfluous many metric terms of FV discretization
276                  of stress divergence
277                  affects lab_sea, lab_sea.hb87
278      seaice_ocean_stress: removed superfluous many metric terms of FV discretization
279                  of stress divergence for non-evp solver
280                  (this part is not tested anywhere)
281      seaice_calc_strainrates: fixed a bug in no-slip boundary conditions,
282                  they were effectively only half slip
283                  affects lab_sea.hb87
284      updated all relevant verification experiments (except lab_sea//output_adm.txt
285        which was left over, but fails at level 7 & 6)
286    
287    checkpoint61j
288    o pkg/seaice: turn a few hard wired parameters into run time parameters
289    o pkg/seaice/exf/monitor: turn netcdf coordinate variable T into model
290      time in seconds as promised by the usints in seaice_monitor and exf_monitor
291    o pkg/mnc: fix the coordinate variables for multi-tile curvi-linear grids
292      that are not cubed-sphere grids
293    o pkg/seaice: fix a bug for the rare case of SEAICE_VECTORIZE_LSR
294    o pkg/ctrl:
295      fix bug in ctrl_depth_ini.F (EXCH_XYZ was applied to 2-D field xx_r_low)
296    o non-hydrostatic (calc_gw.F):
297      fix viscA4 on CS-grid + fix diagnostics: Wm_Diss & Wm_Advec
298      update output of exp. global_ocean.cs32x15.viscA4
299    o remove backward compatibility for thetaMin,phiMin
300      (replaced by xgOrigin,ygOrigin on Jan 27, 2009)
301    o pkg/exf: fix a serious bug in exf_set_uv.F: do a rotation of the
302      interpolated wind field not only for curvilineargrid=.true., but also
303      for a rotated grid (rotateGrid=.true.)
304    o pkg/exf: add capability to bypass interpolation for runoff
305      by setting yet another CPP-flag
306    o eesupp/src, B-grid exchange:
307      add simple (6 tiles, non MPI) CS exch + standard interface S/R.
308    o autodiff
309      new CPP option ALLOW_TAMC_SINGLEPREC_COMLEV
310      allows to switch to single-prec common blocks;
311      corresponding switch occurs in tamc.h, integer isbyte
312      TAF store directivs "byte" and "kind" seem equivalent;
313      Most tamc.h have been updated correspondingly.
314    
315    checkpoint61i
316    o autodiff:
317      fix autodiff_sore/_restore indices for obcs
318      (spotted by I. Hoteit, M. Mazloff)
319    o pkg/autodiff, pkg/ctrl:
320      Add flag to reduce all tapelev I/O to single-prec.
321      In data.ctrl set
322        doSinglePrecTapelev = .TRUE.
323    o model/src/ini_curvilinear_grid.F, new grid-file format without EXCH2:
324      check in hack for SX8 compiler (for dxV, dyU); remove it afterwards.
325    o pkg/shelfice: fix bug with SHELFICEconserve flag, prepare for
326      real fresh water flux (not yet)
327    o pkg/mdsio & rw:
328     - add argument & option to S/R MDS_WRITEVEC_LOC (avoid Open/Close & write-meta)
329     - add simple interface S/R to MDS_WRITEVEC_LOC in pkg/rw: WRITE_GLVEC_RX.
330    o pkg/flt:
331     - replace FLT_INIT by 3-steps standard initialization S/R: readparms,
332       init_fixed & ini_varia.
333     - clean-up & simplify linear interpolation S/R:
334       move flt_bilinear.F -> flt_interp_linear.F ; add arg. myThid.
335     - fix some indices (mainly vertical index) ; add IMPLICIT NONE.
336     - more efficient I/O, using new options of MDS_WRITEVEC_LOC S/R.
337     - add vert. coordinate & horiz. indices to output files.
338     - change vertical position in initial condition, from index to depth [m].
339     - store horizontal (decimal) indices i,j in common block (instead of coord. x,y)
340       (easier to get to a curvilinear grid) ; delX,delY no longer used.
341    o pkg/ggl90: a few modifications:
342     - fix bottom boundary condition, and interpolation of KappaE
343       near top and bottom
344     - use same set of viscosity/diffusivity for TKE/momnetum/tracer
345     - add smoothing option as in Blanke and Delecluse (1993) (--> ALLOW_GGL90_SMOOTH)
346     - add a few options for mixing-length upper limit (--> mxlMaxFlag)  
347    o rename thetaMin,phiMin -> xgOrigin,ygOrigin
348      (maintain temporary backward compatibility, until next checkpoint)
349    
350    checkpoint61h
351    o pkg/diagnostics with "periodic averaging diagnostics":
352      fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
353    o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
354    o pkg/obcs: fix loop ranges for balancing code
355    o pkg/flt:
356     - improve criteria for finding which tile owns a float.
357     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
358    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
359      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
360      with ocean biogeo)
361    o pkg/flt:
362     - do some cleaning and fix the restart ;
363     - add output.txt in flt_example/results to get this pkg tested.
364    o genmake2: add an EXTENDED_SRC option and flag.
365       for now, cannot be turned on on command line (only through genmake_local)
366    o pkg/mdsio: read/write vector:
367     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
368     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
369       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
370     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
371      (drop to 4 digits matching for grad). But this test does not look very
372      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
373    
374    checkpoint61g
375    o pkg/flt:
376      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
377       + make OPTIONS file more standard.
378      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
379      - fix _BYTESWAPIO CPP-Flag
380      - standard reading of file-parameter "data.flt"
381      - fix argument list of S/R FLT_RESTART
382      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
383    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
384    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
385      a still unfixed compiler/optimization bug
386    
387    checkpoint61f
388    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
389      update results of global_ocean.cs32x15.icedyn test.
390    o move getcon.F from model/src to pkg/fizhi.
391    o pkg/exf: add parameter for extrapolation of temp up to the surface
392       and option to prevent negative evap (in bulk_largeyeager04 only).
393    o Prather Advection scheme: fix tracer conservation for divergent flow
394      (e.g., when using NonLin Free-Surface).
395    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
396    o gmredi (Visbeck-variable-K):
397     - add more parameters to Visbeck-variable-K.
398     - use a 5 points average for dSigmaR in Visbeck-K calculation
399       (more "homogenous": same stencil and same weights as in dSigmaH)
400     - update output of ideal_2D_oce experiment.
401    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
402      (#undef REAL4_IS_SLOW)
403     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
404       coordinate variable
405     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
406       (surface forcing fields), removes some of the functionality
407     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
408     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
409       probably not all: copy _RS surface flux fields to RL field before
410       calling DIAGNOSTICS_FILL
411     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
412       real*4 (CALL EXCH_*_RS) versions.
413     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
414       (generate new output).
415    
416    checkpoint61e
417    o gmredi (Visbeck-variable-K):
418      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
419      - change computation of Visbeck-K where Slope > Smax :        
420        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
421        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
422    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
423      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
424    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
425    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
426      does not become too large (to avoid precision problems in implicit-diffusion
427      solver); update ideal_2D_oce output.
428    o pkg ggl90:
429      - in ggl90_cal.F: compute only one set of visc/diff, used to
430        step forward TKE/T/S/momentum
431      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
432        have Prandlt =1)
433    o gmredi (fm07):
434      - add lower limit on Transition layer thickness + lower limit on 1/lambda
435      - allow to set few more params from data.gmredi
436    o pkg ggl90:
437          - add missing sqrt(2) factor in computation of mixing length
438            scale in ggl90_calc.F
439            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
440    
441    checkpoint61d
442    o adjoint modifs
443      - adapt to new field rhoInSitu
444      - allow to revert from StoreDynVars2D, StoreDynVars3D
445        to individual fields
446        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
447    o store 3-D (in-situ) density in commom block (DYNVARS.h)
448     - save 1 rho computation.
449     - no longer modify T & S inland when using down_slope pkg.
450    o gad_som : allow to switch to SOM advection for T & S without corresponding
451      pickup files (using new S/R: MDS_CHECK4FILE).
452    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
453      (for useSingleCpuIO to work in multi-threaded)
454    o pkg/shelfice:
455     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
456       with SHELFICEtopoFile in data.shelfice
457     - move code for reading ice shelf topography and modifying hFacC into separate
458       subroutines of the shelfice package
459     - separate initialisation of "fixed" and "variable" variables
460     - kTopC is not (yet) replaced by kSurfC, although this is possible
461    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
462    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
463      and rename:
464      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
465      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
466    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
467    
468    checkpoint61c
469    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
470      to add mass source/sink of fluid in the interior (3-D generalisation
471      of oceanic real-fresh water flux).
472    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
473    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
474    o new pkg: down_slope
475      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
476      - presently, modify T & S inland (dwnslp_calc_rho.F).
477        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
478      - implementation for ocean in P-coords not tested.
479      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
480    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
481      (to facilitate conversion of oceanic pkg to p-coordinate).
482    o change FIND_RHO to FIND_RHO_2D :
483      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
484    o new pkg: cheapaml
485    
486    checkpoint61b
487    o exch2:
488      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
489      - no longer depend on the order sequence (N,S,E,W).
490      - 3rd exchange no longer needed (tested with 24 tiles).
491      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
492      - exch_UV_A-grid readily available (but not yet tested).
493      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
494      (both are no longer needed) in exch_uv: no effect in forward run; but
495       get truncation error differences with adjoint exch.
496    o exch2:
497     - change index-bounds storage (moved from target to local tile,
498       more intuitive this way) ; rename/remove some variables.
499     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
500    
501    checkpoint61a
502    o exch2/matlab-topology-generator:
503      fix bug in index bounds for N-S internal exchange (hard to tell if this
504      had any effect on the solution).
505    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
506      is exceeded
507    o testreport: modify syntax of awk, so that it works also with
508      awk, and not only with nawk and gawk
509    
510    checkpoint61
511    o autodiff
512      Change default for TAF usage by removing argument '-nonew_arg'
513      This changes TAF subroutine argument list (ordering of active var.)
514      Omission of this flag leads to incompatibility w.r.t. TAMC
515      To restore TAMC-compatibility, need following modifs:
516      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
517      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
518      Tested TAF version is 1.9.22
519      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
520    
521    checkpoint60
522    --->>> This is the last checkpoint for which generating the adjoint
523    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
524    --->>> by default.
525    --->>> Future checkpoints will ommit this flag by default.
526    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
527    o pkg/grdchk: Add gradient check to etan0 perturbations.
528    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
529    o pkg/autodiff: more flexibility in zeroadj.
530      model/src: modifying do_oceanic_phys.F accordingly.
531    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
532    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
533      special setup of gmredi for which the adjoint is stable
534      enough for parameter optimization.
535    o bridging the gap between eddy stress and GM.
536      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
537          along with a change in CPP option (now ALLOW_EDDYPSI).
538      -> when using GM w/ GM_AdvForm:
539          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
540          is applied either in the tracer Eq. or in momentum Eq.
541          depending on data.gmredi (intro. GM_InMomAsStress).
542      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
543      The key modifications are in model/src/taueddy_external_forcing.F
544      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
545    
546    checkpoint59r
547    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
548      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
549      fix option to read coriolis(@ cell-corner) from files with CS-grid.
550    o pkg/mnc: add some attributes to standard 1D-coordinate variables
551    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
552      mass points, when using mnc for output
553      - add runtime parameter (missing_value, missing_value_int) to override
554        default (which is the value of getcon('UNDEF'))
555    o pkg/mnc: prepare mnc for the actual use of missing values with the
556      diagnostics package: small fix in mnc_cw_readwrite.template and more
557      initialisation of never used fields
558      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
559      versions
560    o pkg/thsice/thsice_ini_vars.F added default initial values so that
561      thermodynamics sea ice solver does not blow up when some initial fields
562      are missing.
563    o move from external_forcing_surf.F to ini_forcing.F
564      the p-coord. hack consisting in using pLoad to set phi0surf ;
565      update output of tutorial_global_oce_in_p (affected @ truncation level).
566    o Freshen up a bit hs94.1x64x5, notably:
567      remove rotationPeriod and tRef=5*0. (adjoint only), and add
568      exactConserv=.TRUE.
569    o pkg/generic_advdiff:
570      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
571      applies to files where Temperature & Salinity 2nd Order moments are used.
572    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
573      this uses a dynamically allocated internal state data structure
574      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
575      and requires a fortran 90 compiler
576    
577    checkpoint59q
578    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
579       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
580    o Refresh tutorial_global_oce_biogeo, notably:
581      - change bathymetry (put back seamounts in ACC, use hFacs)
582      - change EOS (POLY3 --> JMD95Z)
583      - use Bryan-Lewis vertical diffusivity
584      - use multidimensional advection
585      - remove old virtual virtual in dic pkg, now done through ptracer pkg
586      - change a couple of parameters in dic pkg
587    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
588    o pkg/obcs: change default to OBCSfixTopo = .true.,
589      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
590      - replace "debugMode" with "debugLevel .GE. debLevB"
591    o implementation of TAF directives for gchem,cfc,dic
592    o remove "exp5" (replaced by tutorial_deep_convection).
593    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
594      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
595      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
596      --> changes results in exp4, seaice_obcs
597    o tutorial_deep_convection :
598      update the set-up and increase resolution and domain size ; start
599      from pseudo initial conditions = output at t=120mn in order to see
600      something happening when running testreport.
601    o pkg/seaice: add os7mp as an advection scheme
602                  add check for advection schemes
603                  add a flag for restoring T and S underneath sea ice
604    o pkg/my82: add netcdf-support and diagnostics
605    o thsice pkg:
606      - Now hsMax limits snow height by turning it into ice following
607        flooding scheme (and now conserving energy)
608      - Slight rewriting of the formula in thsice_calc_thick.F
609      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
610      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
611    
612    checkpoint59p
613    o gchem / dic / cfc :
614      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
615      - add new parameter files: "data.dic" & "data.cfc" ;
616      - various re-arrangement in initialisation & header file ;
617      - fix tutorial_global_oce_biogeo for multi-threaded test.
618    o pkg/dic: test for "pickup_dic" file when restarting ;
619      if no pickup-file, can restart with a re-initialised pH (same as it did
620      before) providing pickupStrictlyMatch is set to False.
621    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
622      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
623    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
624      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
625    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
626     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
627       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
628    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
629       scheme to use for vorticty-term ;
630     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
631       (with default selectVortScheme, return to original discretisation)
632     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
633    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
634    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
635      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
636      also fix diagnostics VISCAHW & VISCA4W.
637    
638    checkpoint59o
639    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
640    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
641      move a few statemens out the main loop into separate loops
642    o pkg/shelfice:
643      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
644        (kg/m^2/s), does not break tests, because in verification/isomip,
645        rhoConstFresh=rhoConst (by accident)
646      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
647      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
648        new file model/src/seawater.F, so that they are available for all pkgs.
649      - convert potential temperature into in-situ temperature. This changes the
650        isomip tests => update tests
651    o add a flag writePickupAtEnd (default=true) to be able to suppress
652      writing a pickup at the last timestep
653    o tools/mpack-1.6 :
654      - disable automake (not working) and autoconf (not needed).
655      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
656        also cleaner with much less compilation warnings.
657    o pkg/profiles:
658      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
659      (for "less than 32 characters name" compiler requirement)
660    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
661      conditions that have a different sampling frequency than S/T/U/V obcs
662    o pkg/diagnostics (stats-diags):
663      - fix global Min/Max in case 1 processor get only empty tiles
664    o genmake2: replace (4 times)
665         make genmake_tc_1.o >> genmake_warnings 2>&1
666      with
667         COMM="$CC $CFLAGS -c genmake_tc_1.c"
668         echo $COMM >> genmake_warnings
669         $COMM >> genmake_warnings 2>&1
670      to make genmake2 always see the value of CC as specified in the optfile.
671    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
672      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
673      - modify verification advect_cs test to test SOM-advection on CS-grid.
674    o pkg/ctrl:
675      - Rewrite of ctrl_map_ini_ecco.F,
676        introducing a generic routine (ctrl_map_ini_gen.F).
677      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
678    
679    checkpoint59n
680    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
681      number in dedicate array "hdiag":
682      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
683        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
684      - many small changes (integer format) for large number of diagnostics
685      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
686        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
687    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
688      usingSphericalGrid, this allows to define the rotated grid coordinates
689      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
690      geographical coordinates according to the inverse of the rotation defined
691      by the Euler angles, so that Coriolis parameter and online-interpolation by
692      exf works with the geographical coordinates on XC/YC/XG/YG.
693      Naturally, this feature does not work with all packages, so some
694      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
695      profiles), because there the coordinates are assumed to be regular
696      spherical grid coordinates.
697    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
698      - introduce isopycnal diffusion coefficient control.
699    o tools/adjoint_options:
700      - additional control vector components.
701    o pkg/mnc: have mnc create marginally meaning full coordinate variables
702      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
703    o pkg/mypackage:
704      - add example of read/write pickup for state-var ;
705      - add entry points to the main code for state-vars diags & write-pickup.
706    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
707      transitions for useExfYearlyFields
708      - add new subroutine that determines the file to read from for
709        use*YearlyFields = .TRUE. and .FALSE.
710      - add a verification experiment to global_with_exf that tests
711        useExfYearlyFields with USE_EXF_INTERPOLATION defined
712    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
713      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
714      subroutines (which could be generated from a template, because they are
715      almost identical), for now they are included in obcs_prescribe_read.F for
716      simplicity
717    o pkg/exf:
718      - add a little more diagnostic to exf_interp_read (in analogy to
719        mds_read_field, can be turned off with debugLevel < debugLevA=1)
720      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
721        ugly but fast by unrolling short inner loops, inserting a unroll=8
722        directive in routine lagran, and splitting a loop and making do while the
723        outermost loop (the latter requires the intoduction of index arrays)
724    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
725    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
726      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
727    o verification/seaice_obcs: updated for restart test and latest options
728    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
729      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
730      for now this is only available for the C-grid code and also within
731      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
732    
733    checkpoint59m
734    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
735      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
736    o gad_som : fix flux output (& diagnostics) to have same units as other  
737      advection scheme fluxes (was previously multiplied by deltaT).  
738    o added verification/seaice_obcs both to test seaice open boundaries
739      and to provide an example matlab scrpt for generating them
740    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
741    o pkg/salt_plume: clean up salt_plume_frac.F to
742      remove redundancy in PlumeMethod 1 and 4
743    o pkg/kpp: added saltplume diagnostics
744    o pkg/obcs and pkg/seaice:
745      - do not set uice and vice to zero when OB*icefile are unspecified
746      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
747      - moved seaice tracer obcs after call to seaice_growth
748    o pkg/salt_plume: added various options for salt plume depth
749      criterion and for vertical distribution of the salt
750    
751    checkpoint59l
752    o pkg/ptracers: new version of ptracers pickup:
753      read meta file and write only fields which are needed to restart.
754      ( same logic as main pickup file ; also using pickupStrictlyMatch )
755    o pkg/seaice:
756      - add timescale for melting due to warm mixed layer as a means of
757        setting SEAICE_availHeatFrac more conveniently
758      - add a CPP-flag/runtime parameter check for flooding algorithm
759      - reformulated availHeat in seaice_growth.F to be independent of AREA
760    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
761      unit changes
762    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
763    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
764      SX vector computer.
765    o pkg/seaice:
766      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
767        seaice forcing fields can now be read only through pkg/exf
768      - removed some unused halos
769    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
770    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
771      or U/VICE from U/VWIND before computing U/VSTRESS
772    
773    checkpoint59k
774    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
775      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
776    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
777      all experiments pass when compile with un-initialised var. checking option.
778    o added pkg/salt_plume
779    o script to test restart (for now, in MITgcm_contrib/jmc_script)
780    o pkg/seaice: new read/write pickup version.
781      read meta file and write only fields which are needed to restart.
782      ( same logic as main pickup file ; also using pickupStrictlyMatch )
783    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
784    o lab_sea.hb87: modify the domain & update output.hb87.txt :
785      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
786      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
787      process. Fixed here by closing the domain at the Northern boundary.
788    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
789    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
790      a set of consecutive levels in/from a 3-D array.
791    o pkg/ptracers:
792      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
793      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
794    
795    checkpoint59j
796    o in pkgs: dic, obcs, offline, rbcs:
797      standard way to compute coeff. for time interpolation between 2 time reccords
798      which retains full precision (& make results less dependent on compiler).
799      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
800    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
801      packages instead of reading ice cover and wind speed separately
802    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
803     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
804      to allow to compile customized code before the update)
805    o cleaning-up:
806      - fix CPP instruction syntax in pkg/obcs
807      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
808        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
809      - fix some threads issue in IO parts.
810    o pkg/dic:
811      - add tons of "_d 0" (--> much better testreports !)
812       and then update outputs of tutorial_global_oce_biogeo
813    o pkg/mom_fluxform:
814      add a special version of momentum advection intended to conserve momentum
815      next to a bathymetry step or a coastline edge. (default = off = #undef)
816    o new read/write pickup version:
817      - for now, only implemented for main (mdsio) pickup file.
818      - write out only what is needed to restart; merge pickup_nh , pickup_ph
819        and main pickup together.
820      - read meta file; read only what is needed to restart; stop if a field
821        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
822        if it make sense (even if the restart is not perfect).
823      - if no meta file, assume that pickup to read corresponds exactly to
824        a pickup that would currently be written.
825      - read pickup written in the old format (until checkpoint59i) if it
826        recognizes an old meta file (no field-list).
827      - add a meta file in exp. which starts from a pickup: 2 cases:
828        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
829         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
830        b) a meta file describing the content of the associated pickup file
831         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
832    o pkg/mdsio & pkg/rw:
833      - new routine to read a meta file ; new set of routine to read
834        Multiple-fields file (with meta file).
835    o added open boundary conditions capability for seaice
836        HSNOW, HSALT, UICE, and VICE
837    
838    checkpoint59i
839    o adjoint:
840      * fix multiDimAdvection adjoint
841        (partial recomputation problem by TAF for fVerT(:,:,kDown)
842        and comlev1 size definition (maxpass vs. max. number of tracers)
843      * verification/global_ocean.90x45x15 adjoint now tests
844        NLFS and multiDimAdvection using DST3 (=30)
845      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
846    o pkg/kpp: add "_d 0" to real constant (if missing);
847      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
848      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
849    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
850      for internal parameters related to restart process (formerly from PARAMS.h)
851      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
852    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
853      as argument. (only atm2d & obcs write_pickup have not yet been updated)
854    o pkg/monitor:
855      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
856      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
857      - account for deep Atmosphere factor and density factor (anelastic)
858    o added open boundary conditions capability for seaice HEFF and AREA
859    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
860      thermodynamics
861      - requires a little reorganization, which affects the testreport results
862        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
863        so that now the conservative form is tested
864      - add a few comments
865    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
866    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
867    o add new diagnostics to seaice: advective, diffusive fluxes (only for
868      multidim-advection, for scheme 2 they are not filled) and transports,
869      thermodynamic growth rates
870    o change units of EmPmR (inside the code, + within coupling interface)
871      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
872      Affects results @ truncation level (cg2d match) and update output of
873       experiments: lab_sea(6), global_ocean.90x40x15(10),
874      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
875      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
876      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
877      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
878    
879    checkpoint59h
880    o pkg/exf:
881      - improve vectorization by moving if-statement out of loops in
882        exf_mapfields, exf_radiation
883      - exf_bulkformulae.F: introduce 2D fields and vectorize code
884    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
885    o testreport:
886      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
887        monitor & update offline_exf_seaice exp. output.
888      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
889    o pkg/seaice:
890      - bug fix in the evp solver: boundary conditions were affected be
891        masking of zMax/zMin (changes results)
892      - minor bug fix in boundary conditions in seaice_calc_strainrates
893        (changes results for no_slip)
894      - seaice_lsr.F: make interpolation of eta dependent on boundaries
895      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
896      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
897        stress formulation and no-slip boundary conditions
898    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
899      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
900    o pkg/seaice: a first HSALT time stepping equation has been checked in
901    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
902      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
903      without requiring DO-IF statements
904    o pkg/thsice:
905      use continuous power-law function for partition of energy between lateral
906      melting/freezing and thinning/thickening ; old code using step function
907      still available with #undef THSICE_FRACEN_POWERLAW
908      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
909    o testreport: change AD testing : check against results/output_adm.txt
910      using same scripts as for forward test.
911    
912    checkpoint59g
913    o adjoint testing: in preparation for changing testreport:
914      - output format: cost and grad written on separated lines
915      - ad output results in directory "results" (instead of "results_ad")
916    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
917    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
918    o pkg/ecco: allow user defined cost function contributions
919    o testreport:
920      Allow to choose (per experiment) the list of tested output variables
921       and the main variable (used to issue a pass/FAIL ) ;
922      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
923      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
924      Also modify printing of summary:
925       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
926       b) echo the list of tested variables in the individual summary.txt of
927          each experiment.
928    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
929      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
930      (but still depend on the tile decompostion of the domain).
931    o pkg/seaice: change a discretization detail to make the B-grid code
932      "more symmetric". This change is likely to remove all "ridges/leads" that
933      where quasi-aligned with the grid in B-grid solutions. It may also be
934      the solution to the stress coupling issues with the B-grid.
935    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
936      remove .cvsignore from input dir. (since testreport no longer run here).
937    o pkg/thsice:
938     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
939     - fix reshaping of sea-ice just after advection:
940       melt all the ice only if ice-volume is too small.
941     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
942       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
943     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
944    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
945      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
946    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
947      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
948      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
949      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
950      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
951      -> update output.txt
952    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
953     this affects truncation error: -> update output.txt of exp:
954      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
955      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
956    
957    checkpoint59f
958    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
959    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
960      a bounded range (in forward mode)
961    o pkg/ecco, ctrl, autodiff and mom_common:
962     internal parameter controls, completements of implementations
963    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
964    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
965      (not seem any difference in testing results).
966    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
967       at face corners.
968    o pkg/generic_advdiff:
969     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
970      loop range indices for computing vertical advection tendency
971      and do the calculation in the interior only (no overlap) ;
972      for now, only implemented for SOM advection (to save CPU time).
973     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
974    o exch2 adjoint
975      First set of changes:
976      - add exch2 hand-written adjoint templates
977      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
978        This will require cleanup in pkg/autodiff/*.F
979        (changed routines currently kept separate in verif. code/)
980      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
981        that used to hide exch2 or cubed-sphere specific code
982        (commented via 'cph-exch2')
983    o pkg/seaice
984      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
985    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
986       output of global_ocean.cs32x15.thsice .
987    
988    checkpoint59e
989    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
990      for B-grid vector (not yet tested) and C-grid vector (<- only used
991      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
992    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
993      (#ifdef ALLOW_SALT_PLUME)
994    o gather_2d/scatter_2d: removed halo regions
995    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
996      scheme and the corresponding test case (under front_relax dir). For now,
997      only available with Skew-flux form and not yet tested in realistic set-up.
998      adjoint: store directives updated, but gradient checks deteriorated,
999      so maybe GM/Redi adjoint is now broken.
1000    o seaice adjoint
1001      * add AREA, HEFF, HSNOW as control variable
1002        (should not change lab_sea results)
1003      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
1004    o pkg/seaice:
1005      * added computation of saltFlux in seaice_growth;
1006        For time being, sea ice salinity is assumed constant
1007        contribution of snow flooding to freshening of sea ice is neglected.
1008        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
1009        defaults to 0.0 in order to maintain backward compatibility.
1010        Typical values for SEAICE_salinity are 4 to 10 g/kg.
1011      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
1012      * added SEAICE_availHeatFrac, which specifies fraction of surface level
1013        heat content used to melt or grow ice
1014      * commented out cap of HICE: it helps keep ice thinner
1015      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
1016      * applied OBCS T/S mask to HEFFM sea ice mask
1017    
1018    checkpoint59d
1019    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
1020     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
1021     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
1022    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
1023     and change default value of parameter "GM_Small_Number";
1024     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
1025       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
1026       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
1027    o pkg/ecco: cost function when applying pkg/smooth to controls
1028    o pkg/ctrl: add forcingPrecond run time parameter
1029    o pkg/seaice:
1030     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
1031     - fix bug in metric terms of u-equation in LSR solver (implicit part),
1032       changes verification/lab_sea
1033     - rearrange implicit part of u-equation in LSR solver to make it easier to
1034       read, understand, and debug. This causes changes at the truncation level.
1035     - fix (serious) bug in the boundary conditions (sign error in the implicit
1036       part) of the LSR solver. Changes all LSR results.
1037     - fixed problem with HSNOW initialization to avoid thick snow when AREA
1038       is initilized with small values - does not change lab_sea results.
1039     - added HsnowFile initialization capability
1040    o pkg/smooth: addition to model/src and pkg/ctrl so allow
1041     initialization of pkg/smooth and application to control vector
1042    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
1043    o dependencies: pkg/profiles requires pkg/cal
1044    o pkg/profiles:
1045     - added option ALLOW_PROFILES_GENERICGRID
1046         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
1047         that interpolation information (grid points and coefficients) is provided
1048         within the netcdf input files.
1049         -> sample matlab scripts can be found in MITgcm_contrib/gael
1050         that allow you to prepare netcdf input files.
1051     - also modified: cleaner include statements, cleaner error print statements,
1052       cleaner stops when error, and more tests of the netcdf input files consistency.
1053    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
1054    o pkg/seaice:
1055     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
1056       requires a new routine: seaice_diagnostics_fill.F
1057     - make sure that seaice does not move if not forced (pressure replacement
1058       method, Hibler and Ip, 1995), changes results
1059     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
1060     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
1061       It is turned off by default (=-1.), because it changes the results.
1062     - make it possible to read AREA from a file, too.
1063    
1064    checkpoint59c
1065    o add S/R and diagnostics for oceanic mixed-layer depth
1066    o move GMRedi call after all vertical mixing schemes (including KPP)
1067    o pkg/thsice:
1068     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
1069      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
1070    o pkg/obcs:
1071     - bug fix for balance code
1072    o pkg/seaice:
1073      - allow values of SEAICE_elasticParm > 1
1074      - add new parameter SEAICE_evpTauRelax as an alternative
1075        to SEAICE_elasticParm
1076      - make lsr boundary conditions free slip (by default), changes result
1077      - add code for no slip boundary conditions for lsr
1078      - set minimum of zeta to zero (and not 4e8) (changes results)
1079      - add a cap on AREA after advecting AREA if seaice_growth is not called
1080    o change calculation of Visbeck K:
1081      - no longer depend on tapering scheme; instead, compute slope (limited
1082        by GM_maxSlope). this is equivalent to what was comuted before with
1083        clipping or linear tappering.
1084      - fix vertical averaging (wrong by 1/2 level)
1085      - leave the old version (but will not be maintained) within
1086        #ifdef OLD_VISBECK_CALC / #endif
1087      - update output of exp. ideal_2D_oce
1088    o change error catch in calc_r_star to improve vectorization
1089    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
1090      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
1091    o adjoint:
1092      Re-organized adjoint checkpointing according to Matt Mazloff
1093      (but with modifs/completions/cleanups)
1094      Storing is now bundled into large arrays to optimized I/O
1095      (and second step in cleanup of the_main_loop)
1096    
1097    checkpoint59b
1098    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
1099      - export/import (between ocean & coupler) fields needed for ocean DIC.
1100    o pkg/seaice:
1101      - get rid of three more exchanges seaice_calc_viscosities (required
1102        different loop boundaries in seaice_lsr and seaice_ocean_stress)
1103      - bug fix in seaice_ocean_stress (update of lab_sea required)
1104      - reduce loop boundaries to necessary minimum also in seaice_evp
1105      - go back to the old way of computing deltaC/Z as the adjoint likes that
1106        better
1107    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
1108      passive tracer to an Age Tracer) + update output.txt
1109    o pkg/exf:
1110      - implement A-grid / C-grid selection for wind-stress input files.
1111      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
1112      for now, in exf_bulk_largeyeager04.F only :
1113      - change implementation for case where windspeed + 2. components wind-stress
1114        are read-in. AND use rhoConstFresh to convert evap.
1115    o pkg/seaice:
1116      - use correct EXCH_UV for wind-forcing (on A-grid).
1117      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
1118        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
1119    o pkg/exf:
1120      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
1121      EXF_INTERPOLATION:
1122      - merge global_with_exf/code version of exf_interp_read.F
1123        to the main code ;
1124      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
1125        reading the file ; Important: This options needs to be defined to recover
1126        previous code.
1127        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
1128      - no longer loose real*8 precision along the way when using exf_iprec=64.
1129    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
1130      - change discretisation of evp-solver in order to avoid another exchange
1131        (changes lab_sea) and clean up a little
1132      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
1133        help the adjoint (this also changes the results slightly)
1134      - add a few "_d 0" where they had been missing in seaice_evp.F
1135      - cleaning up: remove unused seaice_calc_rhs.F
1136    o pkg/exf: some cleaning-up:
1137      - change various "constants" into runtime parameters
1138      - cleaned-up Large&Yeager04 routine which should eventually
1139        replace exf_bulkformulae.F (changed names of S/R and CPP)
1140        and merged various ALLOW_ATM_WIND options
1141     only used with thsice pkg (in thsice_get_exf.F):
1142      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
1143        which are used when useStabilityFct_overIce=TRUE (= the default)
1144      - change default values of ice & snow emissivity and scale downward LW
1145        by ice & snow emissivity.
1146    o pkg/thsice:
1147     fix few little problems, in thsice_calc_thickn.F:
1148      - growth vertically (and not laterally) if iceFrac == iceMaskMax
1149      - melt only laterally if hIce < hThinIce (as the comments say)
1150      and in thsice_extend.F:
1151      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
1152      - start to form ice as soon as the minimum ice-volume is reachable.
1153     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
1154      and cpl_aim+ocn
1155    o pkg/kpp
1156     - move computation of surface related input fields to KPP into a new
1157       subroutine kpp_forcing_surf.F
1158     - remove wrong (within bi,bj loops) EXCH calls.
1159     - little cleaning (add argument myThid in last position, cvs header ...)
1160     - for now, fix conservation problem by exchanging KPPviscAz (may not
1161       be the best fix)
1162    o pkg/seaice
1163     - check for inconsistent evp parameter/cpp-flag combination
1164     - remove leftover errIO flat for obsolete name list error handling
1165    o OpenAD
1166     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
1167    
1168    checkpoint59a
1169    o pkg/seaice: some parameter clarifications and a little bit of clean up
1170    o pkg/thsice: rename run-time parameters:
1171       himin       -> hIceMin
1172       himin0      -> hThinIce
1173       hihig       -> hThickIce
1174       i0          -> i0swFrac
1175       transCoef   -> bMeltCoef
1176       frac_energy -> fracMelting
1177      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
1178       with default values (for now) that do not change the results.
1179      remove old version of thsice vars advection in pkg/seaice.
1180    o in FFIELDS.h:
1181      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
1182      - make pLoad & sIceLoad always available (but still only used if
1183         ATMOSPHERIC_LOADING is #define).
1184    o pkg/kpp: replaced _KPP_RL with _RL
1185    o bug fixes for vertical diffusivity computations when both KPP and
1186        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
1187        are no longer updating the vertical diffusivity array
1188        (passed as argument) but are (re-) setting those arrays.
1189    o pkg/seaice: fix bug in evp solver, while doing that
1190      - change (improve?) discretization of stress computations for both
1191        cgrid-lsr and evp solver
1192      - add a new routine to compute strain rates
1193      - the above changes lab_sea results
1194      - add no slip conditions for evp solver (off by default), lsr-version
1195        may follow
1196      - fix exchange for shear at Z-points (does not change lab_sea)
1197      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
1198        (to force the user to pick a time step since there is not "safe" way
1199        of choosing it)
1200      - add principal stress diagnostics
1201      - rearrange fields for evp a little to avoid having to call a: too many
1202        exchanges and b: exchanges for stress trensor components which we do
1203        not have.
1204      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
1205        of evp, complete rewrite for lsr case (latter is does not yet work
1206        in all cases)
1207    o pkg/kpp: add code to have mixing in shelf ice caverns
1208      - add myThid to all kpp routines (long overdue)
1209    
1210    checkpoint59
1211    o pkg/exf:
1212      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
1213        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
1214      - move exf header files from lower_case.h to UPPER_CASE.h ;
1215        add missing cvs Header & Name
1216      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
1217      - add namelist param. selectStressGridPosition, exf_monFreq
1218      - retire many _CLIM routines, and remove data.exf_clim
1219        + params moved to data.exf
1220        + climsst, climsss now handled by exf_set_gen, i.e.
1221          climss?period=0 refers to constant field,
1222          climss?period=-12 to monthly forcing
1223      - split up namelists in data.exf
1224    o pkg/seaice:
1225      - remove seaice_exch and seaice_exch_uv
1226      - remove superfluous exchange of theta
1227      - add myThid to seaice_budget_ocean/ice
1228      - add new interface for atmospheric wind forcing (C-grid only)
1229        + new routine
1230        + two new field (taux, tauy for stress over ice)
1231        + removed one global field (DAIRN) for C-grid case only
1232    o pkg/thsise
1233      - 2nd set of modifs for thsice adjoint in conjunction with exf
1234    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
1235    
1236    checkpoint58y_post
1237    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
1238      vertical diffusivity, similar to that in MOM4; turned on using
1239      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
1240      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
1241    o Added capability for 3D specification of background vertical diffusion
1242      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
1243      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
1244      "data" file that contains the 3D vertical diffusivity coefficients.
1245    o ice dynamics (pkg/seaice) with thsice thermodynamics:
1246      - add code within pkg thsice to advect & diffuse sea-ice fields
1247      similar to (and will replace) what has been added in  seaice_advdiff.F,
1248      but: - conserving Mass, Heat & Salt.
1249           - better when using non-linear advection scheme (not yet fully tested)
1250           - can also be used in atmospheric set-up (for now, only the diffusion).
1251    
1252    checkpoint58x_post
1253    o IO option for global-file compact format:
1254      - add options when generating topology (utils/exch2/matlab-topology-generator)
1255      - add I/O capability (pkg/mdsio).
1256      - adapt utils/matlab/rdmds.m to read this format.
1257      for now long-line format not yet supported by pkg/mdsio (& exch2).
1258    o shelfice: add a few diagnostics
1259    
1260    checkpoint58w_post
1261    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
1262      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
1263      (and replace horiVertRatio in NH code).
1264      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
1265                         and tutorial_plume_on_slope (sensitive to truncation)
1266    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
1267      directly to drive seaice model (C-grid only)
1268    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
1269     - reintroduce computation of wind from stress,
1270     - compute tau (in exf_bulkformulae.F) from windstress averaged to
1271       mass points to avoid tau = 0
1272     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
1273    o rdmnc.m: make it work with "global" files created with gluemnc
1274    o rdmnc.m : some improvements in dealing with singleton dimension
1275      (tested on all testreport mnc output files).
1276    o genmake2: disable pkg/profiles if netcdf test fails.
1277    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
1278    o move call to cal_readparms up to make calendar parameters/variable available
1279      to all packages
1280    
1281    checkpoint58v_post
1282    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
1283      useDynP_inEos_Zc tested.
1284    o pkg/exf: changes to properly interpolate/mask/scale initial fields
1285    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
1286      and portions thereof.  See read_cs.txt for description and examples.
1287    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
1288      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
1289      following the great-circle arc between those 2 points.
1290    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
1291      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
1292    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
1293     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
1294     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
1295     - still needs work (not working with some options ; efficiency to improve)
1296       and serious testing.
1297     - use this scheme for temperature & salinity in 2 advection test exp.:
1298       advect_xy & advect_xz, respectively.
1299    
1300    checkpoint58u_post
1301    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
1302    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
1303    o testreport: add option "-skipdir" to skip some test.
1304    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
1305      momentum calculation.
1306    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
1307    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
1308      remove checkpoint.F and the_correction_step.F (no longer used);
1309      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
1310    o add option (linFSConserveTr) to correct for tracer source/sink due to
1311      Linear Free surface
1312    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
1313    o pkg/thsice: fix reading mnc-pickups
1314    
1315    checkpoint58t_post
1316    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
1317    o pkg/mdsio:
1318     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
1319       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
1320       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
1321     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
1322     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
1323       either MDS_READ_FIELD or MDS_WRITE_FIELD )
1324     - new S/R (to replace MDSWRITEMETA), which allows to write more
1325       informations (variable names, time ...) to meta files.
1326     - modify rdmds.m to give back the meta file content.
1327    o pkg/diagnostics: change vertical interpolation to be safer, and more
1328       flexible (define p-levels to interpolate to in data.diagnostics);
1329      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
1330       diagnostic pointer.
1331    o pkg/seaice: more cleaning up of seaice_growth, added many comments
1332    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
1333    o fix multi-category seaice:
1334     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
1335       SEAICE_MULTICATEGORY
1336     - fix short wave heat flux
1337    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
1338       and allow to use EVP solver. Change forward lab_sea: test both EVP
1339       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
1340    o Initial check-in of lab_sea adjoint
1341      (very similar to natl_box_adjoint/code_seaice)
1342      * used C-grid and EVP solver
1343      * used KPP, GM/Redi
1344      * uses inAdExact=.TRUE.
1345      * gradient checks fail for both ADM and TLM
1346        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
1347        f.d. gradients actually seem more problematic than ADM, TLM gradients;
1348        issue is related to forward mismatch between g77 an ifort
1349    o pkg/seaice: overhaul of thermodynamics
1350     - growth.F and groatb.F are replaced by new routine seaice_growth.F
1351     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
1352     - move a few global fields out of SEAICE.h into seaice_growth.F and
1353       make them 2D (FICE/QNETO/ ...)
1354     - remove FO (it is the same as QNETO)
1355     - introduce a few local fields to avoid modifying external fields such
1356       as atemp, etc.
1357    
1358    checkpoint58s_post
1359    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
1360      changed exf_set_gen.F so that
1361        genperiod=0 means input file is one time-constant field and
1362        genperiod=-12 means input file contains 12 monthly means
1363    o CG2D: use pre-computed solver main-diagonal (stored in common block);
1364      this affects truncation error ; generate new output file for exp. which
1365      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
1366        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
1367        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
1368        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
1369        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
1370        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
1371    o start implementation of deep-atmosphere and anelastic formulation
1372    o verification: remove 2nd copy of input files and use script "prepare_run"
1373      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
1374    o mom_common/vecinv/fluxform: fix a few initialisation isssues
1375    o profiles: fix for multithreaded case
1376    
1377    o diagnostics: rename few diags:
1378      s/'PRESSURE'/'RCENTER '/g
1379      s/'TICE    '/'oceFreez'/g
1380      s/'TAUX    '/'oceTAUX '/g
1381      s/'TAUY    '/'oceTAUY '/g
1382      s/'SWFLUX  '/'oceQsw  '/g
1383      s/DIFx/DFxE/g
1384      s/DIFy/DFyE/g
1385      and add few ocean-forcing diagnostics:
1386      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
1387    o modifications to pkg/seaice/growth.F and budget.F, which change results of
1388      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
1389      as actual snow thickness.  It now refers everywhere to effective snow
1390      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
1391    
1392    checkpoint58r_post
1393    o modifications to pkg/seaice/growth.F, which change results of
1394      lab_sea experiment: fixes pertain to melting snow over open water, to
1395      masking EVAP under sea ice, and to using the correct AREA variable for
1396      computations of EVAP, PRECIP, HSNOW, and GHEFF
1397    o add ability to read bathy, salt, and theta using MNC (off by def)
1398    o add flooding algorithm and advection of HSNOW for pkg/seaice;
1399      both are turned off by default and do no change any results
1400    o seaice advection with pkg/thsice: a step toward the use of non-linear
1401      advection scheme, but #ifdef or commented out for now (requires more EXCH).
1402    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
1403      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
1404      in natl_box (affects results @ truncation level: update output.txt)
1405    o multi-threading and IO:
1406      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
1407      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
1408        (needed to work with SingleCpuIO): tested in all verif. exp.
1409    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
1410      affects the results (but none of the verification test uses this scheme).
1411    o Adding some pkg/diagnostics capability to pkg/seaice
1412      (will certainly be subject to changes)
1413    o ctrl: adding new control variables:
1414      lwflux, lwdown, evap, snowprecip, apressure, runoff
1415    
1416    checkpoint58q_post
1417    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
1418      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
1419      high_res_cube configuration by 4% on Columbia.
1420    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
1421      add (in global_with_exf/code) a version of EXF_INTERP_READ without
1422      dynamical allocation (seems to work in multi-threaded).
1423    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
1424      single CPU io) so that TAF does not have to see EESUPPORT.h
1425    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
1426    
1427    checkpoint58p_post
1428    o obcs: stop if obcs is used with useCDscheme = .true.
1429    o shelfice:
1430     - fix a sign error so that no slip at shelfice interface works
1431     - remove stop for combination non-hydrostatic code and shelfice. That does
1432       not mean, that the results are correct, but at least they are numerically
1433       stable
1434    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
1435    o added adjoint exch routined for all exch*3d* routines
1436      and updated flow directives
1437    
1438    checkpoint58o_post
1439    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
1440      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
1441    o change controling S/R for writing pickup file (new S/R do_write_pickup)
1442      and clean-up reading/writing of pickup files.
1443    o fix local version of read/write pickup (NH part) in rotating_tank/code
1444    o simplify EXCH interface:
1445     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
1446     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
1447    o added the regrid package
1448    o shelfice:
1449     - add a simple boundary layer scheme to reduce noise
1450     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
1451    
1452    checkpoint58n_post
1453    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
1454       local variable (not in common block).
1455    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
1456      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
1457      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
1458        to work with SingleCpuIO.
1459    o add "_d 0" to real constant of pkg/cfc subroutines ;
1460       update exp. cfc_exemple & tutorial_cfc_offline output files.
1461    o multi-threading and IO:
1462      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
1463        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
1464      - barrier before and after reading.
1465      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
1466      - avoid using MDS_WRITELOCAL for LAND pkg output.
1467      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
1468        common-block variables ; Allows multi-threading with master-thread IO.
1469    o change default MAX_NO_THREADS from 32 to 4 ;
1470      and stop cleanly when MAX_NO_THREADS is too small.
1471    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
1472    
1473    checkpoint58m_post
1474    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1475       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1476    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1477       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1478       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1479    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1480        add MITgcm_tutorials (= code + all the tutorials)
1481    o ecco, option to compute cost for total ssh (mean+anom)
1482    o consistent with addition of ptracer and ssh in pkg/profiles
1483    o profiles: adding ptracer and ssh
1484    o testreport: change multi-test output-file name
1485      (from output.txt.{name} to output.{name}.txt)
1486    o profiles: now ok for mutli-tiles case
1487    o seaice: add 4 parameters for different advection schemes for area,
1488      (effective) seaice thickness, enthalphy, and snow height. Their default
1489      is the standard parameter SEAICEadvScheme
1490    o calc_gw:
1491     - add cosFacU in zonal viscous flux (harmonic.visc.).
1492     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1493       of tutorial_plume_on_slope.
1494    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1495    o calc_gw: true flux-form, account for horizontal grid spacing.
1496      update rotating_tank results, but not plume_on_slope (affected at
1497      truncation level, 11 digits).
1498    
1499    checkpoint58l_post
1500    o calc_gw:
1501     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1502     - remove side-drag for now (need to fix it); update plume_on_slope results.
1503     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1504    o commit code to make SST/SSS weights spatially variable
1505      (based on either variable in-situ or variable initial T/S weights)
1506    o pkg/ecco:
1507      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1508        now based on horizontally varying weights wthetaLev, wsaltLev
1509      * cost_averagesflags now returns year indices in addition to day, month
1510      * sflux balance is performed on annual basis
1511        (sflxumm, sfluxmm2, bal_sfluxmm)
1512      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1513        including separate counting and multipliers
1514    o pkg/rbcs
1515      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1516    
1517    checkpoint58k_post
1518    o testreport:
1519     - always build in dir. "build" (if not there, mkdir build instead of building
1520       & running in input)
1521     - run in dir run (if it exists), in build otherwise.
1522     - call prepare_run (if input/prepare_run exists)
1523     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1524    o pkg/exf modifications to interpolation and rotation routines for more
1525       reasonable treatment of North Pole singularity: for tracers North Pole
1526       value is set to northernmost zonal-mean value, for zonal velocity it is
1527       set to zero, and for meridional velocity it is set to northernmost value.
1528    o pkg/exf/exf_check_range.F
1529     - add tile index to diagnostics and move stop statement to the very
1530       end of the routine.
1531    o pkg/diagnostics: (diagnostics_main_init.F)
1532      define title of isomorphic variables according to the current config.
1533    o pkg/thsice with pkg/seaice dynamics:
1534    - fix domain of computation (interior only, required for exf) and do exchanges
1535    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1536    o towards a standard way of dealing with multi-threading in MONITOR
1537      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1538    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1539       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1540    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1541    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1542    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1543       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1544    o tracer advection:
1545     - clean-up and simplify calc_common_factors.F
1546     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1547       advection subroutine (but still not used within DST advection S/R)
1548    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1549    
1550    checkpoint58j_post
1551    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1552      from file (collects calls previously in FORWARD_STEP)
1553    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1554    o adjoint store dir. adjusted accordingly
1555    o genmake2
1556      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1557    
1558    checkpoint58i_post
1559    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1560      on wind stress (SEAICEstressFactor defaults to 1.)
1561    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1562      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1563    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1564      on CS-grid: no longer loosing mass.
1565    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1566    o pkg/ggl90: fix sloppy output and fix a bug
1567    o pkg/seaice: added SEAICEuseEVPpickup parameter
1568      - Set to false in order to start EVP solver with
1569        non-EVP pickup files when using SEAICEuseEVP
1570      - fix sign error in diffusion in seaice_calc_rhs
1571    
1572    checkpoint58h_post
1573    * Modifications for bottom topography control
1574      o replace hFacC by _hFacC at various places
1575      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1576      o add non-self-adjoint cg2d_nsa
1577      o update autodiff support routines
1578      o re-initialise hfac after ctrl_depth_ini
1579      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1580    * Adding verification for 5x5 box (4-layer) bottom topography control
1581    
1582    checkpoint58g_post
1583    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1584       used for mean seasonal cycle, mean diurnal cycle); add an example
1585       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1586    o pkg/ggl90:
1587      - add parameter (minimum surface kinetic energy)
1588      - fix bug (avoiding division by zero)
1589    o couple pkg/thsice to pkg/seaice:
1590      - modify advection in seaice to accomodate new scalar fields to be advected
1591      - only muliDimAdection scheme work with seaice/thsice
1592      - mapping of thsice-variables to seaice-variables, back and forth
1593      - does not break the verification experiments, but does not give the
1594        desired results either
1595    o pkg/seaice
1596      - make (default) second order advection a bit less confusing?
1597    
1598    checkpoint58f_post
1599    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1600      to pkg/seaice):
1601      - new routines thsice_map_exf and thsice_get_exf provide the interface
1602      - add an additional formal parameter to thsice_solve4temp
1603    o pkg/exf:
1604      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1605      - correct Stefan-Boltzmann constant
1606      - new parameter for longwave surface emittance
1607      - separate some stuff from exf_bulkformulae into new routines  
1608        exf_radiation, exf_wind
1609      - add new parameters and constants: longwave emissivity for ocean, ice
1610        and snow, evaporation parameters over ice
1611      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1612        either wind from stress or stress from wind
1613    o pkg/thSIce:
1614    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1615    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1616       and THSICE_CALC_THICKN
1617    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1618    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1619      to make debugging easier.
1620    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1621    o pkg/bulk_force:
1622      - clean-up comments and parameters ;
1623      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1624    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1625      generate new output for test-experiment: aim.5l_cs.thSI
1626    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1627      testreport accordingly
1628    
1629    checkpoint58e_post
1630    o SEAICE_CGRID adjoint done
1631    o R_STAR adjoint implemented.
1632      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1633      * need to sort out init. of h0facc, etc.
1634    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1635      to be able to use it in pure forward.
1636    
1637    checkpoint58d_post
1638    o upgrade simple test-experiment to tutorial example:
1639     step.1: duplicate the experiment and (step.2) will remove the old copy.
1640      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1641      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1642      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1643      tutorial_global_oce_biogeo    <- copy of dic_example
1644      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1645      tutorial_plume_on_slope       <- copy of plume_on_slope
1646      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1647      tutorial_global_oce_optim     <- empty for now (David ?)
1648      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1649     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1650    o correct a sign problem in cost_scat.F
1651    o obcs and ptracers: fix boundary conditions for advections schemes
1652      with larger stencil
1653    o thsice adjoint: start
1654    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1655      completeness
1656    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1657      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1658    o ptracers adjoint:
1659      * avoid extensive recomputatations
1660      * fix missing re-init. of gptr (missed by TAF)
1661    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1662      me to turn off the excessive output to STDOUT that this package produces
1663    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1664      and add those terms in Vector-Invariant formulation.
1665    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1666      if the control period (xx_hfluxperiod etc) is 0
1667    o in profiles pkg, clean routines and fix details
1668    o in ecco pkg, reading ssh data:
1669      fix problem in case the model does not start at iter0=0
1670    o fix mnc-pickup/restart for ptracers
1671    o new package prifiles:
1672      code to compute profile-based cost by Gael Forget
1673      (modifs in ecco, ctrl, autodiff)
1674    o Benign bug fix in initialization (spotted by M. Mazloff) of
1675      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1676    
1677    checkpoint58c_post
1678    o adjoint: finish NLFS adjoint and provide reference output in
1679      verification/global_ocean.90x40x15/results_ad_nlfs
1680    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1681      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1682      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1683      with SEAICE_CGRID defined.
1684    o move calendarDumps from "data" to "data.cal" and clean-up the code
1685      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1686    o add useEXF & useCAL flags (for now, set in hard-coded way)
1687    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1688      (were missing in NH mode, and wrong in quasihydrostatic mode).
1689      waiting for Chris updated version of calc_gw to add those CALLs.
1690    o fix bug in quasihydrostatic S/R ;
1691      add a test for this option: global_ocean.90x40x15.qshyd
1692    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1693      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1694    o add on/off flag useOffLine for package OFFLINE
1695    o seaice:
1696      - modify advection so that it works also on the C-grid
1697      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1698        problem in multi-tile runs with C-grid
1699      - add flags for clipping ice velocities and/or masking solver forcing
1700      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1701        C-grid solver
1702      - added a few comments to seaice_diffusion.F
1703      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1704        are now exclusive)
1705      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1706        required re-ordering the code a little:
1707       + make DAIRN global variable (defined in SEAICE)
1708       + move computation of the viscosities eta and zeta into a new separate
1709         routine (because I need to recompute them in seaice_ocean_stress.F)
1710    
1711    checkpoint58b_post
1712    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1713      update output.txt of exp. aim.5l_cs.thSI
1714    o various mnc cleanups and improvements:
1715      + shrink lookup tables by factor of ~4
1716      + better error reporting when running out of lookup space
1717      + able to handle longer path/file names (up to 500 chars)
1718    o adjoint:
1719      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1720      - TBD: "hidden" mom_vecinv recomp. in dynamics
1721    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1722     (allow to differentiate between forcing components using new integer flags:
1723      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1724     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1725    o ecco
1726      - enable trend removal from SSH anomaly obs.
1727    o adjoint
1728      - a fix for PmEpR when #undef EXACT_CONSERV
1729      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1730      - try to fix "hidden" recomp. in forward_step for NLFS
1731        (NLFS seems broken sometimes after I checked it in)
1732    o seaice:
1733     - add c-grid version of the dynamic solver:
1734       + three new routines that are the c-grid substitute lsr, dynsolver
1735         and ostres
1736       + put a few fields that were local to dynsolver into global common
1737         blocks, so that I can move the computation of stresses etc into
1738         seaice_lsr (saves coding but may break the adjoint).
1739     - replace more hardwired parameters by runtime parameters
1740     - add ice masks that mask the rhs of the implicit solvers where there
1741       is no ice (commented out in seaice_dynsolver, because i am not sure
1742       if this works properly), eventually this should replace the clipping
1743       of ice velocities in seaice_dynsolver to +/-40cm/s.
1744    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1745      include it only where its needed
1746    o move balancing of fluxes before the call of external_forcing_surf
1747    o seaice:
1748      - correct units of turning angles (now they are really in degrees)
1749      - move computation of GWATX/Y out of main routine into dynsolver
1750      - initialize GWATX/Y in seaice_init
1751    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1752      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1753    o seaice: add runtime flags for turning angles (default to zero)
1754    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1755      and trend from exf forcing and ctrl control adjustments
1756    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1757      (since checkpoint57x_post)
1758    o change the default rotation period to 86164.s = the Earth rotation
1759    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1760      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1761    o seaice advection: add code for choosing between the default (2nd order
1762      central differences) and multiDim advection schemes provided by
1763      pkg/generic_advdiff
1764    o seaice:
1765      - removed all references to SEAICE_GRID.h fields from
1766        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1767        (cubed-sphere configuration will change a little)
1768      - grid computations in seaice_init are obsolete now.
1769      - cleaned up code a little so that is easier to read (hopefully).
1770      - added new (better?) discretizations of default advection and diffusion
1771        (turn on with SEAICEuseFluxForm)
1772      - replace 1 in 3d global fields by kSurface in growth.F
1773      
1774    checkpoint58a_post
1775    o seaice:
1776      - bug fix in advect.F
1777    o shelfice:
1778      - separate shelfice load anomaly from pload (breaks with time
1779        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1780        Its default is 0., but it may be computed more cleverly from (unknown)
1781        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1782        done offline. A good approximation of the pressure load anomaly is
1783        necessary to avoid large initial adjustment processes underneath
1784        deep-reaching shelfice.
1785      - small fix in ISOMIP shelfice_thermodynamics
1786      - add more sophisticated thermodynamics of Hellmer (1989), this is
1787        now the default
1788      - give a few constants more intuitive names
1789    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1790      if bulk formulae are used in long integration (especially EmPmR). Turn
1791      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1792      if balancePrintMean, the imbalance that is substracted is printed to
1793      STDOUT.
1794    o fix bug (typo) in obcs_apply_eta.F
1795    o add a new package shelfice which enables us to model the circulation
1796      underneath shelf-ice with draughts of hundreds of meters.
1797     - works
1798     - to do: + include improved thermodynamics
1799              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1800                instead of new field kTopC
1801              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1802                instead of new field R_shelfIce and new code in ini_depth.F
1803                and ini_mask_etc.F?
1804              + adjust vertical mixing schemes?
1805    o seaice pkg:
1806     - add a cpp-flag to include a simple formula for a salinity dependent
1807       freezing point of sea water at the surface
1808     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1809       meridional stresses are now different (and hopefully correct)
1810    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1811       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1812       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1813    o pkg/diagnostics: add options and parameters for regional-statistics
1814       diagnostics ; define regions by reading a region-mask from a file
1815       (might add other options later)
1816    o pkg/bulk_force:
1817     - add option and parameters to use AIM surface-flux formulae.
1818     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1819       others forcing fields (defined in PARM05, parameter file "data") are loaded
1820       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1821     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1822     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1823     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1824       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1825     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1826    
1827    checkpoint58
1828    o add "--embed-source" option to genmake2 which, when the supporting
1829      tools can be compiled (as determined by genmake2) will turn on the
1830      embed_files package which then embeds the entire MITgcm source code
1831      (*.[fFhc] + Makefile) used for the build within the executable
1832      - requested by CNH but off by default
1833      - adds a paltry <9MB to the mitgcmuv executable in most cases
1834      - only writes the output when useEMBEDSRC in eedata is true
1835    o clean up 3-dim. relaxation codes:
1836      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1837      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1838      * Thanks to Tom Haine for testing!
1839    
1840    checkpoint57z_post
1841    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1842      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1843    o fix the pickup behavior for obcs in combination with ptracers
1844    o fix a bug in ptracers_external_fields_load
1845    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1846      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1847    o transfered surface NH pressure to eta field (if exactConserv).
1848    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1849         and update lab_sea output.txt file.
1850    o completing 3-dim. relaxation code: additional term
1851         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1852      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1853      * At compile time, in "EXF_OPTIONS.h" set
1854          #define  ALLOW_CLIMTEMP_RELAXATION
1855          #define  ALLOW_CLIMSALT_RELAXATION
1856      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1857          tauThetaClimRelax3Dim = 15552000.0,
1858          tauSaltClimRelax3Dim  = 15552000.0,
1859      * 3 cases:
1860          1) Use a constant-in-time 3-dim. field
1861          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1862          3) Real-time relax. to time-evolving prescribed field
1863    o Adding Laplacian-type smoothness constraint on
1864      initial and boundary (forcing) controls (ic, bc)
1865      * enable at compile-time via
1866        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1867      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1868      * Absolute scale somewhat unclear so far
1869      * no area weighting was included since no other cost term does so far
1870    
1871    checkpoint57y_post
1872    First step for a NLFS adjoint
1873    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1874    o new init. routines for calc_r_star, calc_surf_dr
1875    o still need to deal with ini_masks_etc
1876    o testreport seemed happy
1877    checkpoint57y_pre
1878    
1879    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1880    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1881    o add new offset feature to offline pkg (plus minor cleanup)
1882    o cfc fixes for final year of integration
1883    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1884      be in GCHEM_OPTIONS).
1885    
1886    checkpoint57x_post
1887    o fix testreport Pb in multiple test experiment.
1888    o cleanup our namelist syntax in verification:
1889      - make it more F95 standards compliant (some work still needed)
1890      - allows the vast majority of our tests to work with gfortran
1891    o Non-Hydrostatic:
1892     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1893     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1894    o Allow to apply AB on T,S rather than on AB(gT,gS):
1895     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1896     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1897       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1898     - need a "clever" read_pickup to restart from the other AB formulation
1899    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1900    o remove some unused variables (reduces number of compiler warnings)
1901    o adjoint
1902      * Disable useVariableViscosity for adjoint for time being
1903        (there are a number of extensive recomputations)
1904      * Initialize certain variables needed for adjoint
1905    
1906    checkpoint57w_post
1907    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1908                 fix the singleCpuIO RS version of MDSWRITEFIELD
1909       and add a WARNING if using globalFiles=T with multi-processors.
1910    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1911      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1912    o tracer advection scheme:
1913      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1914       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1915       was not very convenient).
1916      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1917       (further tests needed for the implicit DST & Flux-Limiter schemes).
1918    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1919      and sRef for convenience, handy, when you want to initialize
1920      ptracers in a large domain with a constant non-zero value. Also,
1921      untangle ptracers_init.F a little.
1922    
1923    checkpoint57v_post
1924    o change dome exp. to use variable viscosity in side-drag terms.
1925    o remove all the files from the cfc_offline test since they are now
1926      incorporated into tutorial_cfc_offline which has been producing
1927      identical results for a few days of testing
1928    o add new parameter: sideDragFactor to enable half-slip-side BC
1929      and change side-drag S/R to use viscosity from mom_calc_visc
1930      (can switch back by setting sideDragFactor=0.); affects results at
1931      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1932       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1933    o vorticity & strain are now computed without masking, to account for
1934      no-slip-side BC in variable viscosity calculation ; mask is applied
1935      anyway later on, before computing advection/coriolis terms.
1936    o modify exp4 to test new obcs support for reading from external files
1937      and for passive tracers
1938    o fix behavior of ptracers_monitor when monitor output is written to a
1939      netcdf-file; still not independent of monitor.F (writes in the same
1940      file).
1941    o change default value of tRef (put a uniform, meaningful value for ocean
1942      & atmos) and initialize sRef (was missing, as Martin mentioned).
1943    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1944      to be proportional to enstrophy dissipation length.  Thus,
1945       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1946      This is now consistent with Smagorinsky and with the manual.
1947    
1948    checkpoint57u_post
1949    o OBCS and PTRACERS: add open boundary support for passive tracers
1950      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1951        OB-values from file; this is not different from the way theta and salinity
1952        are treated
1953      - however, Orlanski-radiation conditions are not supported, and the model
1954        will stop if you use pTracers and Orlanski at the same time.
1955      - beefed up the rountine obcs_external_fields_load: now only those open
1956        boundary values are overwritten with values from files for which there
1957        are really files, otherwise the OB-fields remain untouched. This makes
1958        it possible to use different OBs at different ends of the domain (as
1959        with EXF)
1960    o reduce number of exch calls in shap_filt (s2).
1961    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1962      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1963    
1964    checkpoint57t_post
1965    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1966    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1967      same truncation, independent of the face number: affects affects several
1968      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1969    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1970      note that biharmonic viscosity + no-slip was not tested in any experiment.
1971    o fix bug in non-linear free-surf side-drag ; generate new output for
1972      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1973    o make mnc honor the writeBinaryPrec flag for most kinds of output
1974    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1975    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1976      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1977    o add brackets in multi-terms sum to get same truncation, independent of
1978      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1979      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1980    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1981      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1982      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1983      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1984      Suggested values of viscosity parameters found in mom_calc_visc.
1985      Many new viscosity diagnostics available.
1986    
1987    checkpoint57s_post
1988    o Add clearing-house for viscosity calculations, mom_calc_visc and
1989      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1990      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1991      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1992      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1993      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1994      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1995      ViscAhStrain and viscAhTension are now retired.
1996    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1997    o In response to JMC's bug report, genmake2 now ignores any soft-links
1998      that it finds in the *current* directory when searching for files.
1999      Soft-links found in any other source directories will still work as
2000      they did before.
2001    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
2002      a C routine to unlimit the stack size
2003    o mnc-ify pkg/aim snapshot vars
2004    o mnc-ify pkg/land as requested by Daniel
2005    o various changes to mnc including:
2006      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
2007      - output can now be grouped so that all files within a group
2008          change the ITER portion of their names in lock-step together
2009      - can now read ("global") PER-FACE (in addition to PER-TILE) files
2010          and works with both EXCH1 and EXCH2 (but needs more testing)
2011      - writing works for all verification test cases w/ g77 on Linux
2012    
2013    checkpoint57r_post
2014    o make MNC variable initialization happen earlier
2015    o add diagnostics for (almost) each term of the momentum Eq.
2016    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
2017    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
2018    o remove MINIMAL_TAVE_OUTPUT option ;
2019      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
2020    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
2021      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
2022    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
2023    o add time-dependent SST, SSS control
2024    o cost terms in ecco/ modularized (new cost_generic.F)
2025    o cost_averages routines are modularized (new cost_averagesgeneric.F)
2026    o new infrastructure for seaice model vs. obs misfits in seaice/
2027      * driver from the_main_loop.F is seaice_cost_driver.F
2028      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
2029      * gradient check in Exp. 6a of natl_box_adjoint/
2030    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
2031      (see README file)
2032    
2033    checkpoint57q_post
2034    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
2035    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
2036      - bug was reported by Jean-Michel and Ian Fenty
2037    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
2038      update exp. cpl_aim+ocn output.
2039    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
2040      Needed for high-res. runs with large global files
2041      to be able to limit tapelev size
2042    o Changed some tests for adjoint:
2043      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
2044      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
2045      * global_ocean.90x40x15/ back to default 3-level checkpointing
2046    o Modifications to enable scripted COMMON to MODULE conversion
2047      * verification/OpenAD/code/ has necessary scripts and description;
2048      * converts, compiles and runs successfully;
2049    
2050    checkpoint57p_post
2051    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
2052    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
2053      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
2054    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
2055    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
2056      (was already the case for dissipation with mom_vecinv,
2057       and also the case for grad.PhiHyd when staggered-timeStep)
2058      This will allow to put dissipation out-off the AB time-stepping.
2059     Unfortunately, affects truncation error. Update output of exp. that "fails"
2060      (cg2d matching number) and leave the others for later: front_relax(10),
2061      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
2062      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
2063    
2064    checkpoint57o_post
2065    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
2066      (2) its ready to be documented during the 20050801 DocFest
2067    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
2068      for ideal_2D_oce and lab_sea on linux_ia32_g77
2069    o set to #undef CTRL_SET_OLD_MAXCVARS_30
2070      in global1x1_tot/code_seaice_adj to access indices 32, 33
2071      (worth another tag)
2072    
2073    checkpoint57n_post
2074    o adding precip control xx_precip 32
2075    o adding swflux control xx_swflux 33
2076    o Replacing 10 forcing penalty cost routines by 1 generic.
2077    o Implementing partitioning in time-mean and variable adjustment
2078      for atmos. state.
2079    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
2080    o in natl_box_adjoint:
2081      * updated exp 1 to 10
2082        (but does not have time-mean vs. variable split results yet)
2083    o updated global1x1/*_seaice_adj/
2084      to incorporate latest changes
2085    o enable useSingleCpuIO for mdsio vector routines
2086      (applies in particular to tapelev I/O)
2087    o removed inefficient K-loop in all active_file*control*.F
2088    
2089    checkpoint57m_post
2090    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
2091      and advect_cs (use EXCH-2 and standard cs-32 grid files).
2092    o pkg/exch2: filling of face-corner halo regions is optional
2093      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
2094    
2095    checkpoint57l_post
2096     tag before updating tutorials (pre-release-2)
2097    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
2098       for output and interpolation of input fields onto model grid)
2099    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
2100       Affects results of exp. rotating_tank ; update output.txt.
2101    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
2102          and taking the square quantity and/or using a fraction-weight field.
2103    o fix aim_diagnostics_init.F mate numbers.
2104    o add mnc output capability to diagnostics/diagstat and update
2105      our cvsignore files for the ACSII output generated
2106    
2107    checkpoint57k_post
2108    o lab_sea now uses diagnostics package and provides a suite of
2109      new EXF diagnostics output.
2110    
2111    checkpoint57j_post
2112    o exf
2113      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
2114        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
2115        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
2116      * extended diagnostics output
2117        - now includes all EXF variables
2118        - hs, hl moved to common block
2119        - separate S/R for diagnostics, called after ctrl vector is added
2120        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
2121        - EXFqnet contains true Qnet (i.e. includes qsw)
2122      * updated verif. lab_sea, global_with_exf
2123      * Rearranging hflux (exf_mapfields -> exf_getforcing)
2124        to ensure that diagnostics sees a true EXFqnet
2125    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
2126    o diagnostics pkg: change pointers so that 1 diagnostic can be used
2127      several times with different frequencies.
2128    o mnc-ify the thsice package as requested by Daniel Enderton
2129      - the monitor--MNC output needs work
2130      - many attributes need to be added (most are currently blank)
2131    o mnc-ify theaim_v23 package as requested by Daniel Enderton
2132      - many attributes need to be added (most are currently blank)
2133    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
2134    o add Sadourny like discretization to the 4th.O vorticity advection scheme
2135    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
2136      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
2137         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
2138    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
2139     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
2140    
2141    checkpoint57i_post
2142    o Diagnostics package was changed: diagnostic allocation is now deactivated
2143      by setting an empty file name in the namelist (used to be by setting 0 frequency)
2144    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
2145      add 1rst Order upwind vertical Shear.
2146    o add a quick fix for A/B checkpointing in OFFLINE mode
2147    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
2148      end-run around the C/Fortran linking horror in eesup/src/timers.F
2149    o added pkg/runclock: allows user to terminate run based on wall clock
2150    o added non-hydrostatic scaling parameter: nh_am2
2151    o pkg/my82: futile attempt to make results compiler-independent by adding
2152      some "_d 0", etc. no effect.
2153    o for mnc output, fill the 'T' coordinate var with myTime and create a
2154      separate 'iter' variable for iteration count
2155    o pkg/diagnostics:
2156      add new capability: output of Global/Regional & per-level statistics ;
2157      tested against monitor output (including land & thSIce) on various exp.
2158    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
2159    
2160    checkpoint57h_done
2161      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
2162      data.diagnostics, data.gchem, data.ptracers) is done.
2163    
2164    o pkg/diagnostics: prepare for Global/Regional statistics.
2165      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
2166    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
2167      and rename it: DIFFERENT_MULTIPLE
2168    
2169    checkpoint57h_post
2170    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
2171    o pkg/diagnostics: change output frequency, now in seconds (instead
2172      of Nb of iterations). This requires to change data.diagnostics.
2173    checkpoint57h_pre
2174    
2175    o in mnc, let the user create the output dir if both mnc_outdir_date
2176      and mnc_outdir_num are false
2177    o add fflags() to pkg/diagnostics which allows one to specify, on a
2178      per-file basis, the file precision [default behavior is unchanged]
2179    o added diagnostics to pkg/kpp, including computation of mixed layer
2180      depth based on a temperature/density criterion
2181    o updated verification/natl_box to test the new pkg/kpp diagnostics
2182    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
2183    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
2184    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
2185      not mnc -- this mistake was found by JMC and is now corrected
2186    
2187    checkpoint57g_post
2188    o add Adams-Bashforth 3rd Order time stepping:
2189      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
2190      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
2191    checkpoint57g_pre
2192    
2193    o make lambda[Theta,Salt]ClimRelax spatially varying
2194      (default remains spatially uniform constant based on tau)
2195    o added new control variables
2196      * init. uVel, vVel, etanN
2197      * lambda[Theta,Salt]ClimRelax
2198    o separate masks used for ctrl_pack/unpack 'from write_grid' output
2199      (suggested by G. Forget)
2200    
2201    checkpoint57f_post
2202    o add parameter "baseTime" = model base time = time at iteration zero
2203      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
2204      account for baseTime shift
2205    o move Coriolis arrays from PARAMS.h to GRID.h
2206    checkpoint57f_pre
2207    
2208    o mnc-ifying the seaice package
2209    o introduced an alternative length scale calculation for use in the limiting
2210      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
2211    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
2212    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
2213      as well as grad(vort3).  Made it compatible with both approximate form
2214      for the cubed sphere and full form of these gradients.  Added flag
2215      useFullLeith to select between approximate and full form.  
2216    o add "d0" in getcon.F to reduce differences between compilers/platforms
2217      update output.txt of exp. fizhi-gridalt-hs
2218    o change port_rand funtion to allow to set the seed.
2219    o fix obscure MNC bug involving conversion between reals and integers
2220      - it caused no problems with certain (eg. gcc, ifc) compilers but the
2221        new version is now more standards-compliant
2222    o adjoint-related modifications
2223      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
2224      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
2225      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
2226    
2227    checkpoint57e_post
2228    o Adding eddy stress controls a la Ferreira et al.
2229    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
2230    
2231    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
2232      update output.txt of exp. fizhi-gridalt-hs
2233    o add more "Z" dimensions and associated coordinate vars to MNC
2234    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
2235    o parameter calendarDumps: when set, approximate months (30-31 days) and years
2236      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
2237      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
2238      months and years.  Requires pkg/cal.
2239    o diagnostics: add pickup functionality
2240      - off by default for backwards compatibility
2241      - current version only uses MDSIO -- MNC will be added
2242    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
2243    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
2244    
2245    checkpoint57d_post
2246    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
2247    o modify verification/ideal_2D_oce so that it tests the creation of mnc
2248      output from the diagnostics package
2249    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
2250    o make genmake2 more portable by using ".$FS" instead of ".f" for more
2251      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
2252    o add coordinate variables to the MNC output from the diagnostics package
2253    o change MNC-flags default value: true when useMNC=TRUE
2254    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
2255      the ability (off by default) to read the grid information using MNC
2256    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
2257    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
2258    o do snap-shot diagnostics at the middle of the time-interval (instead of
2259      at the end).
2260    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
2261      new test for AIM with thSIce + slab-ocean
2262    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
2263    o move state variable diagnostics to the beginning of the time step ;
2264      (note: still needs some work specially for snap-shot diagnostics)
2265      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
2266    
2267    checkpoint57c_post
2268    o Change testing option (-ieee) to get closer agreement between g77 & ifort
2269    o generate new output.txt files on faulks with g77 & the new -ieee option
2270    checkpoint57c_pre
2271    
2272    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
2273      update output.txt of exp. global_ocean.90x40x15
2274    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
2275      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
2276    o add saltFlux(+File) forcing capability with periodicExternalForcing
2277    o allow to use pkg diagnostics for GM-Redi & ThSIce output
2278    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
2279    o improvements for the MNC output from DIAGNOSTICS:
2280      - correct handling of the unlimitied dimension
2281      - all dims now have associated coordinate variables
2282      - variables located at U, V, and Corner ("Z") points are now written
2283        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
2284        *all* data points are output
2285    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
2286    o added pkg/seaice/seaice_monitor.F
2287    o mdsio_readfield.F can now read files visible only to master MPI process.
2288    o pkg/seaice: some test code for ice-modified ocean stress
2289    o exf_getffields interpolation defaults to bilinear for all scalar forcing
2290      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
2291      spurious negative numbers for precipitation and humidity.  Will cause
2292      some small numerical differences for integrations using pkg/exf/exf_interp.F.
2293    o pkg/ctrl/
2294      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
2295        May be enabled via doPackDiag
2296      *  introduce z-scaling of
2297         + gradient (doZscalePack) and
2298         + control (doZscaleUnpack)
2299    o pkg/mdsio/
2300      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
2301      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
2302    
2303    checkpoint57b_post
2304    o simplify options in diagnostics_fill arguments (remove weird combinations)
2305    o fix MNC coordinate variables so that they now contain per-face index
2306      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
2307      general, EXCH2 grids are only aligned to a "local" coordinate system
2308    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
2309    o Implement instantaneous output within pkg diagnostics:
2310      setting a negative frequency in data.diagnostics produces
2311     "snap-shot" output (as opposed to time-average if freq > 0)
2312    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
2313      NOTE: change ptracer diagnostics name: use 2 characters to work with
2314            more than 9 tracers. Add also diagnostics of advect & diffus flux.
2315    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
2316      becomes the coordinate variable for the 'T' dimension
2317    o add CF-style coordinate variables to MNC
2318      - just a first cut:  numbers are meaningless on the cubesphere and
2319        missing along the T axis but otherwise it works!
2320    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
2321    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
2322    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
2323      this is based directly on what the model compute, so that the content of
2324      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
2325    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
2326    o clean up build options files for SunOS, in particular
2327      - remove -traditional from xmakedepend
2328      - change -xarch=v9 to -xarch=native for f77
2329      - restore use of make (not gmake)
2330      - add CC=gcc if using g77
2331    o changes per discussion of AM, JMC, & EH3 today:
2332      - move redundant "grid" variables out of "state" -- in preparation of
2333        creating proper CF-style coordinate variables and in recognition
2334        that any/all grid variables can be easily copied (eg. w/NCO) from
2335        the grid files into any of the other NetCDF files
2336      - *always* output grid variables with MDSIO (this will eventually be
2337        changed)
2338      - output MNC grid file if useMNC is true
2339    o every instance of _END_MASTER() has been found and replaced with
2340      _END_MASTER( myThid ) in order to satisfy certain picky Sun
2341      preprocessors
2342    o re-arrange diagnostics pkg initialisation:
2343     - allow each package to extend the available diagnostics list
2344     - add some checking and fix small problems (multi-threaded, ...)
2345     - new S/R diagnostics_fill (replace fill_diagnostics):
2346       look through the short list of active diag. (instead of the long list)
2347       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
2348    
2349    checkpoint57a_post
2350    o this set of changes restores TAMC compatibility
2351      tested for global_ocean.90x40x15 adjoint on trough
2352      (what a pain)
2353    
2354    checkpoint57a_pre
2355    o some modifs in tools/build_options for sunos
2356    o call ctrl_pack for ctrl at end for optimcycle=0
2357    
2358    checkpoint57
2359    o add horizontal bi-harmonic viscosity for vertical velocity
2360      - new parameter viscA4W (defaults to viscA4)
2361      - affects only non-hydrostatic code
2362      - to be done: no-slip lateral boundary conditions
2363    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
2364    o implement Implicit Vertical advection for pTracers
2365    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
2366      (implemented also for implicit vertical diffusion & advection)
2367    o OBCS: extend application of tracer open boundary conditions
2368      to a strip beyond the boundary of width Olx/Oly
2369    o add call monitor to TAF set of required calls (flow directives)
2370      and include in natl_box_adjoint
2371    o untangle a few ifdefs related to cost, ctrl, autodiff
2372      untangel a few ALLOW_ECCO_OPTIMIZATION
2373    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
2374      (theta2, salt2 in ecco_cost_weights)
2375    
2376    checkpoint56c_post
2377    o OBCS as control variables
2378      - update ctrl_ad_diff.list, obcs_ad_diff.list
2379      - remove balance of obcs controls from default
2380      - fix index bug nobcs in ctrl_init
2381      - fix dummy fields filen in ctrl_pack
2382      - add dummy weights for obcs
2383    o lsopt: comment out fort.94 output
2384    o optim:
2385      - remove unnecessary header files
2386      - adjusted namelists
2387      - add xerbla.F to Makefile
2388    o exf:
2389      - multiple modifications of exf_check_range
2390      - unit change in exf_init_runoff from [m/year] to [m/s]
2391    o mdsio:
2392      - i/o-vector change debugLevel from debLevA to debLevB
2393    
2394    checkpoint56b_post
2395    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
2396      is called from DO_THE_MODEL_IO
2397      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
2398      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
2399      - clean up PTRACERS_WRITE_TIMEAVE a little
2400    o add another verification experiment that tests both the cfc-pkg and
2401      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
2402      reactive tendencies treated inline with regular timestepping
2403    o testreport previously did a lousy job of comparing small numbers, so
2404      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
2405      implemented in the little c-progam tmp_cmpnum.c which is embedded in
2406      testreport.
2407    o ptracers_monitor: bug fix for MPI
2408    
2409    checkpoint56a_post
2410    o GCHEM: finish reorganizating the package
2411      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
2412        (introduces another 3D-array for each passive tracer, but only if
2413        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
2414        gchemTendency is not needed because the timestep is done separately)
2415      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
2416      - GCHEM is now---more or less cleanly---separate from PTRACERS
2417      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
2418        so clear to me how that should be done in a general way.
2419    o CFC: improve formatting of output in CFC_ATMOS
2420    o PTRACERS:
2421      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
2422        that ALL experiments with ptracers enable can be checked. This makes
2423        GCHEM_MONITOR obsolete.
2424      - include a runtime parameter PTRACERS_monitorFreq that defaults to
2425        monitorFreq
2426      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
2427    o add PTRACERS (PTR0[1-5]) to testreport output
2428    o exf_check_range:
2429      * default changed to .TRUE.
2430      * will check values for niter0 if debLevA, every timestep if debLevB
2431      * STOP in exf_check_range if 'out of range'
2432      * range chosen generous to allow for potential extema
2433      TBD: a version with stricter range
2434           permitted range would be runtime parameters
2435  o GMredi:  o GMredi:
2436    - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;    - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
2437    - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.    - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
# Line 11  o GCHEM: Line 2440  o GCHEM:
2440    - move call to GCHEM_FORCING_SEP, so that it is now called before    - move call to GCHEM_FORCING_SEP, so that it is now called before
2441      the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP      the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
2442    - introduced a useGCHEM runtime flag and applied it everywhere.    - introduced a useGCHEM runtime flag and applied it everywhere.
2443      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
2444        this flag is now only visible within GCHEM-pkg routines.
2445      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
2446        be replaced by a 3D array that is computed before thermodynamics; for
2447        this, the tracer ID iTracer had to be included into the parameter list
2448        of ptracers_forcing
2449      - set up forward_step to call gchem_forcing, that will replace
2450        gchem_forcing_int in ptracers_forcing
2451      - cleaning up
2452  o small cleaning of exch2: remove files that are also in eesupp/src  o small cleaning of exch2: remove files that are also in eesupp/src
2453    
2454  checkpoint56  checkpoint56
# Line 229  o add two new packages Line 2667  o add two new packages
2667    - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme    - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2668    - these scheme operate in a similar manner as KPP (without ghat, of    - these scheme operate in a similar manner as KPP (without ghat, of
2669      course), however there is only one diffusivity that is used for both      course), however there is only one diffusivity that is used for both
2670      temperature and salinity (and passive tracers)ç      temperature and salinity (and passive tracers)
2671  o add offline package  o add offline package
2672  o add "verification/dic_example" which contains a dic-gchem-ptracer setup  o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2673    provided by Stephanie Dutkiewicz    provided by Stephanie Dutkiewicz

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