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revision 1.340 by stephd, Wed Sep 1 16:57:12 2004 UTC revision 1.1141 by jmc, Mon Jul 13 21:57:32 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    o eeset_parms.F, open_copy_data_file.F & ini_parms.F:
8       named file replacing SCRATCH files (for TARGET_BGL & TARGET_CRAYXT):
9       each processor open a different file (a fix from Matt).
10    o cg2d:
11       use simple EXCH (overlap size = 1 and ignore corners), like in cg3d.F :
12       this reduces number of EXCH calls by 2 when using exch2.
13       For now, keep previous size array for gc2d_nsa.F to avoid Pb with store
14       directives and missing simple EXCH (exch_s3d_rx) adjoint code.
15    o pkg/thsice:
16       add code for Near Infra-Red albedo (from Jeff)
17       (turned on with run-time flag: thSIce_calc_albNIR, in data.ice).
18    o ini_model_io:
19       move (from packages_readparms.F & initialise_fixed.F) to ini_model_io.F
20       MNC & MONITOR initialisation calls; move MNC calls from {pkg}_readparms.F
21       to {pkg}_init_fixed.F for {pkg}= kpp, seaice & shelfice.
22    
23    checkpoint61s
24    o pkg/exch2 (exch2_rxN_cube*):
25       remove last BARRIER (no need to synchronise after getting data from shared
26       buffer (get) as long as any change to buffer (put,recv) is between BARRIER)
27    o change tiling of natl_box (from 2 to 4 tiles) to get it tested with MPI+MTH
28      and generate new output (for the 2 tests) using default rotationPeriod.
29    o pkg/exch2:
30      - always call exch2_*_cube, not exch-1 anymore, if useCubedSphereExchange=F
31        (was already the case with AUTODIFF_EXCH2 defined)
32      - add bj in exch2 arrays and S/R.
33      - can now use pkg/exch2 for regular (non CS) set-up; switch test experiment
34        MLAdjust to exch2 (identical results except with MPI -> truncation diff);
35    o add pkg/longstep for ptracer timestep a multiple of U/V/T/S timestep
36      - adds deltaT argument to the subroutines TIMESTEP_TRACER DWNSLP_APPLY
37        GAD_ADVECTION GAD_CALC_RHS GAD_IMPLICIT_R GAD_SOM_ADVECT
38      - verification experiment natl_box.longstep
39    o build_options: ifort+mpi_aces optfile (following Constantinos advise):
40      allow different versions of ifort (8 or 9) and different versions
41       of mpi (mpich or mpich2) to be used with the same optfile.
42      requires to load a netcdf module and set MPI_INC_DIR (see comments inside
43       optfile). Change testing scripts (example_scripts/ACESgrid) accordingly.
44    o pkg/seaice:
45      fix previous modif (3-level field removed) for old-pickup reading
46    
47    checkpoint61r
48    o pkg/seaice:
49     - clean up the 3-time levels of UICE,VICE,HEFF,AREA in three steps:
50      1. introduce fields for time step (N-1)
51      2. do not use levels 2 and 3 anymore (but keep them)
52      3. replace 3D versions of UICE,VICE,HEFF,AREA by 2D versions. This
53         includes changes to pkg/thsice/thsice_get_velocity.F,
54         model/src/external_forcing_surf.F, pkg/obcs/obcs_apply_seaice.F, and
55         pkg/obcs/obcs_apply_uvice.F.
56     - completely remove code for leap-frog time stepping for second order
57       advection
58     - adjusted adjoint accordingly;
59       gradient checks have improved by an order of magnitude!
60    
61    checkpoint61q
62    o pkg/seaice: fix bug in free slip boundary conditons for LSOR solver
63     - the boundary conditions along open boundaries are unclear, because the
64       associated masks are set to zero and are thus treated as closed when
65       applying the slip-boundary conditions.
66     - move initialisation of grid variables from seaice_init_varia to _fixed
67    o adding doc/diags_changes.txt
68    o model/src:
69      do_the_model_io: rename few pkg S/R which are called from do_the_model_io,
70       to avoid "_diags" naming if no relation to pkg/diagnostics.
71      ini_theta,ini_salt: fix (at least compile the code) reading from NetCDF
72       file and only call PLOT_FIELD_XYZ if debugMode=T.
73      remove few PLOT_FIELD_XY calls outside initialisation.
74      remove few unnecessary BARRIER.
75    o pkg/salt_plume: add SaltPlumeSouthernOcean to allow disabling
76      of salt_plume package in Southern Ocean
77    o pkg/thsice:
78     - fix hOceMxL in overlap (needed for sea-ice advection);
79       update output of experiment global_ocean.cs32x15.icedyn.
80    o pkg/seaice:
81     - make the (placeholder-)tracer IceAge a little more meaningful
82      by avoiding ridging of age due to convergent ice flow
83     - add diagnostics for surface temperature, atmospheric and oceanic
84       heat flux, and atmospheric and oceanic ice growth
85    
86    checkpoint61p
87    o eesupp (global_max & global_sum):
88     - add one more element to buffer (start at index 0) for GL_MAX/SUM output;
89     - remove starting & endding barrier (no longer needed)
90    o pkg/mdsio, writelocal:
91       works also in multi-threaded when LOCBIN_IO_THREAD_SAFE is undefined
92       (remove the STOP): uses shared buffer IO to store data from all threads
93       and then let master-thread write nThreads tiles.
94    o pkg/mdsio (read/write field):
95     - tiled IO done in 1 piece (all levels at a time);
96     - new header file "MDSIO_BUFF_3D.h" with 3-D buffers.
97     - multi-threaded: allow to read/write local (non-shared) array
98       (was already working with singleCpuIO ; now works also without);
99       => no longer needs barrier call after reading a file (added inside
100       mds_read/write field).
101     - move barrier calls outside gather/scatter_2d to mds_read/write_field
102    o pkg/obcs/exf
103      - exf_getffieldrec.F: add a few ". _d 0" and
104                            add code to catch the case fldperiod = 0.  
105      - obcs_precribe_read.F: change if statements so that they match
106                              the variable type (_RL)
107      - add a separate exf_iprec_obcs to exf_set_obcs (by default equal to
108        exf_iprec) as part of namelist EXF_NML_01
109    o pkg/mdsio:
110      - read/write tiled (local) files: read/write 1-level tile chunk at a time
111        (instead of segment of length sNx); expected to speed up tiled IO.
112    o pkg/exch2:
113      - take buffer copy from/to array out of S/R exch2_send/recv into new
114        S/R exch2_put/get ; Exch of local variable now works with MPI+MTH
115        (tested by removing commom block statement in SOLVE_FOR_PRESSURE.h).
116      - ad version of send/recv no longer needed (but needs exch2_ad_put/ad_get)
117      - simplify argument list of S/R exch2_get_uv_bounds and exch2_get_scal_bounds
118        (which replaces exch2_get_recv_bounds & exch2_get_send_bounds) by
119        including Topology header file (and common blocks).
120      - implement EXCH_IGNORE_CORNERS in scalar exchange (rx1);
121        remove 2nd exch call in exch2_s3d_rx (no longer needed).
122      - document S/R arg. list (+ update some comments)
123    o pkg/seaice:
124      - added SEAICE_CLIM_AIR code, which permits modulation of surface air
125        temperature and humidity over sea ice based on climatological values.
126      - clean up computation of Hibler+Bryan (1987) stress coupling for the case
127        of LSR (this change is expected to change the results slightly because now
128        it uses slightly difference moduli from the second last LSR solution, but
129        that is more consistent with the stress computations; this part of the code
130        is not tested in the verification experiments)
131      - fix diagnostics for flux of ice in case of B-grid
132      - turn strain rates eij and press into global fields within global
133        common block in SEAICE.h for more straighforward diagnostics
134      - fix diagnostics for principal stress components, press, zeta, eta
135        to give something meaning full
136    o change tiling of global_ocean.cs32x15 (12 tiles, 32x16) and generate
137      new output (all 4 tests) using default rotationPeriod.
138    o pkg KPP:
139      - add flag (LimitHblStable) to avoid limiting BL depth under stable conditions
140      - fix vertical indices in RI_IWMIX (match between KPP grid from 0 to Nr+1
141        and normal grid from 1 to Nr)
142    o Fix computations of L4rdt in mom_calc_visc.F
143    o eesupp:
144      new S/R ALL_PROC_DIE (like EEDIE, without irrelevant threads err msg):
145      should be called before a "stop" if we know that all process are going
146      to stop; if one Proc does call this S/R, will hang in MPI_FINALISE.
147    
148    checkpoint61o
149    o pkg/exch2: change check_depths to issue just a warning (instead of error+stop)
150    o model/src/ini_curvilinear_grid.F:
151       compute angleSin/CosC when they are not read from a file
152    o pkg/seaice:
153       add pseudo time stepping for LSOR
154    o pkg/exch2:
155       temporary fix for exch2_s3d_rx; update results of exp. hs94.cs-32x32x5.impIGW
156    o pkg/seaice:
157       Adding separate sea ice albedo, drag coefficients, and HO in Southern
158       Ocean from those in Arctic Ocean.  See *_south in SEAICE_PARAMS.h
159    o SingleCpuIO:
160       fix bug put before chkp61n (May 11), when more than 2 MPI cpu are used.
161    o pkg/seaice:
162       put exchanged variable in (local) common block for MPI+Multi-Threads
163       to work (necessary with exch1, and for now with exch2 too).
164    o verification: to get more experiments tested with mpi, mth and mpi+mth,
165      change tiling of:
166       aim.5l_Equatorial_Channel, aim.5l_LatLon, dome, exp4, global_ocean.90x40x15,
167       hs94.cs-32x32x5, MLAdjust, offline_exf_seaice & tutorial_plume_on_slope
168      update output of exp:
169       exp4, global_ocean.90x40x15(+.dwslp), MLAdjust(all 5),
170       tutorial_plume_on_slope and hs94.cs-32x32x5 (use default rotationPeriod)
171      + ideal_2D_ocean: use default rotation period + test Global_Sum_SINGLECPU
172                       (note: output.txt generated on faulks using only 1 tile)
173    o eesupp & mdsio (SingleCpuIO):
174     - remove MISSING_TILE_IO (from MDSIO_OPTIONS.h), replaced by run-time
175       parameter "W2_useE2ioLayOut" (read from file "data.exch2").
176       Note: was not effective for globalFile & useSingleCpuIO=F; now fixed.
177     - move MDSIO_SCPU.h (pkg/mdsio) to EEBUFF_SCPU.h (eesupp/inc).
178     - fix GLOBAL_SUM_SINGLECPU when using Exch2; re-use same buffers and same
179       gather/scatter S/R as with SingleCpuIO (=> 1 less 2D global RL array).
180    o pkg/exch2:
181     - new code to set-up W2-Exch2 topology (replace matlab-topology-generator):
182       read parameter file "data.exch2" if it exists; otherwise try default regular
183       cube without blank-tile; new header file "W2_EXCH2_SIZE.h";
184     - update matlab-topology-generator (exch2_setup_cs6_print.m) to be compatible
185       with new code (not to be used, just as a backup solution).
186     - add examples (e.g., for lat-lon-cap_120) of parameter file "data.exch2"
187       in utils/exch2/input.
188    
189    checkpoint61n
190    o eesupp & mdsio (SingleCpuIO):
191      - move mapping to global io-buffer inside gather_2d/scater_2d: this save
192        memory (1 less 2D global RL array); skip 1 buffer copy; and only send/
193        receive real*4 array (instead of real*8) to read/write 32.bit files.
194        (new template for gather_2d/scater_2d, new set of S/R MDS_PASS_R4,8toRL,S
195         and remove new mapping S/R)
196    o pkg/mdsio: in preparation for topology-generator within pkg/exch2:
197      - Change declaration of SingleCpuIO buffer, reduced to only 1 dim.:
198        xyBuffer_size, which is set to W2_ioBufferSize from W2_EXCH2_PARAMS.h
199        when using exch2. Add S/R to map global io-buffer to global model array.
200      - uses exch2_global_Nx,y instead of exch2_domain_nxt,nyt.
201    
202    checkpoint61m
203    o write_utils : change WRITE_1D_R8 to WRITE_1D_RL
204      and add 3 other S/R for other types (R4,R8,RS).
205      Change calls to WRITE_0D/1D_R[4,8,S,L] to match the type of argument.
206    o eesupp/inc/CPP_EEMACROS.h (EXCH & GLOBAL_SUM/MAX macros):
207     - ensure suffix (_R4,_R8,_RS,_RL) correspondance between macro and S/R ;
208     - reduce number of macro definitions (keep only those which are used);
209       can always call directly the corrresponding S/R if needed.
210     - everywhere in the code: change macros (EXCH & GLOBAL_SUM/MAX) suffix
211       _R4/_R8 to _RS/_RL when applied to _RS/_RL variable.
212     Fixed wrong type of arg in:
213       atm2d/put_ocnvars.F cheapaml/cheapaml.F ocn_compon_interf/ocn_apply_import.F
214       ctrl/ctrl_map_ini_ecco.F seaice/seaice_do_diags.F seaice/seaice_model.F
215     To fix: global_sum of var in common block is wrong (multi-threaded) in:
216       dic/dic_atmos.F ebm/ebm_area_t.F ebm/ebm_zonalmean.F sbo/sbo_calc.F
217     To fix: aim_v23/aim_do_co2.F (BARRIER & GLOBAL_SUM within bi,bj loops)
218    o adjustment.cs-32x32x1: test "blank tiles" when compiling with mpi; 2nd
219      "nlfs" mpi test is going to stop when checking for unconnected tile egdes.
220    o eesupp/src: new S/R to stop everyone when 1 (or more) Proc. find an error
221    o pkg/exch2: new S/R EXCH2_CHECK_DEPTHS to check that unconnected tile
222      edges are closed (zero depth); might happen with "blank tiles";
223      for now, disabled if using OBCS.
224    o tools/gemake2: delete modifs from March 27-29 2009 (with option "-mpi":
225      link *_mpi files from "MODS" dir) to return to a strait-forward behavior.
226    o move read_write.F to write_utils.F ; new parameter (maxLengthPrt1D)
227      to reduce length of 1.D array print in STDOUT.
228    o adjustment.cs-32x32x1: changed to oceanic test with 1 continent
229      + use 48 tiles (16x8): this will allow to test "blank tiles".
230    o start to test MPI + multi-threaded (change testreport to skip tests
231      where number of tiles do not match).
232    o genmake2: add option "-omp" to turn on Open-MP ;
233      passed to testreport (if using -mth) ; merge few (*+mth) optfiles.
234    o pkg/exch2 (+ utils/exch2): ignore blank tiles (instead of removing them)
235      and keep the original tile numbering. Note: compatible with old
236      W2_EXCH2_TOPOLOGY.h & w2_e2setup.F topology files.
237    
238    checkpoint61l
239    o Overlaps had been forgotten in calculating ijk keys : fixed
240    o fix cyrus makedepend for gcc 4.4
241    o experiment fizhi-cs-aqualev20:
242      switching to new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE)
243      and generate new output. Note: new output is much closer to the old
244      one (v1.8) generated with pgf77 -O2 on Mar 14 2007 than it is from
245      the previous one (v1.9) generated with pgf77 -O0 on Jun 13 2007.
246    o pkg/fizhi:
247     - change to avoid indices going deliberately over array-bounds
248     - remove unnecessary MPI stuff
249     - perpetual spring equinox with "#define FIZHI_USE_FIXED_DAY"
250     - new version of S/R GETPWHERE available with #define TRY_NEW_GETPWHERE:
251       does not go over array-bounds and therefore returns reliable output.
252     - in fizhi_driver.F & fizhi_turb.F, fix "get_alarm" calls:
253       this S/R has 4 output arguments, which are used inside "get_alarm";
254       when it is called with the same variable "ndum" in place of several
255       output arguments, this produces weird side effect inside "get_alarm"
256      (e.g., datein=dates(n) is overwritten by timein=times(n) since both
257       datein & timein, resp. 2nd and 3rd arg., are pointed to the same "ndum"
258       address) and produces error.
259    o tools/gemake2: (March 27-29 2009)
260      with option "-mpi": link *_mpi files from "MODS" dir (this is what
261      testreport does).
262    o lab_sea experiment: change from 2x1 tiles to 2x2 tiles and regenerate output
263    o pkg/seaice: fix bug in new version of S/R SEAICE_LSR.F:
264       update lab_sea.lsr & lab_sea.salt_plume results
265    o pkg/seaice:
266      Major overhaul of the LSOR solver: change discretization from original
267      finite differences to finite volume. The old routine is still in the
268      file seaice_lsr.F and can be turned on with the CPP-flag
269      SEAICE_OLD_AND_BAD_DISCRETIZATION
270      Along with this change, the discretization of the strain rates is changed.
271      The same flag turns on the old discretization in seaice_calc_strainrates.F
272      All verification experiments with seaice are affected (except for
273      seaice_exf_offline); global_ocean.cs32x15/input.icedyn recovers the old
274      results by setting the above flag.
275      Further changes involve changes in defaults:
276      - ALLOW_FLOODING is defined and turned on by default
277      - SEAICEadvSnow = .true. is now the default
278      - SEAICEadvSalt = .true. is now the default
279      - SEAICEadvAge  = .true. is now the default
280      - SEAICE_clipVelocities  = .false. is now the default
281                                         (as per J. Zhang's recommendation)
282      - B-grid, and thus not tested: SEAICE_TEST_ICE_STRESS_1/EXPLICIT_SSH_SLOPE
283        is defined, SEAICE_TEST_ICE_STRESS_1 is renamed into SEAICE_BICE_STRESS
284      - seaice_growth: replace computation of UG by a simple copy from wspeed
285    
286    checkpoint61k
287    o pkg/seaice: a few bug fixes mostly concerning the metric terms:
288      seaice_lsr: fixed a few metric terms,
289                  affects lab_sea.lsr, lab_sea.salt_plume, seaice_obcs
290                  add more debugging diagnostics
291      seaice_evp: removed superfluous many metric terms of FV discretization
292                  of stress divergence
293                  affects lab_sea, lab_sea.hb87
294      seaice_ocean_stress: removed superfluous many metric terms of FV discretization
295                  of stress divergence for non-evp solver
296                  (this part is not tested anywhere)
297      seaice_calc_strainrates: fixed a bug in no-slip boundary conditions,
298                  they were effectively only half slip
299                  affects lab_sea.hb87
300      updated all relevant verification experiments (except lab_sea//output_adm.txt
301        which was left over, but fails at level 7 & 6)
302    
303    checkpoint61j
304    o pkg/seaice: turn a few hard wired parameters into run time parameters
305    o pkg/seaice/exf/monitor: turn netcdf coordinate variable T into model
306      time in seconds as promised by the usints in seaice_monitor and exf_monitor
307    o pkg/mnc: fix the coordinate variables for multi-tile curvi-linear grids
308      that are not cubed-sphere grids
309    o pkg/seaice: fix a bug for the rare case of SEAICE_VECTORIZE_LSR
310    o pkg/ctrl:
311      fix bug in ctrl_depth_ini.F (EXCH_XYZ was applied to 2-D field xx_r_low)
312    o non-hydrostatic (calc_gw.F):
313      fix viscA4 on CS-grid + fix diagnostics: Wm_Diss & Wm_Advec
314      update output of exp. global_ocean.cs32x15.viscA4
315    o remove backward compatibility for thetaMin,phiMin
316      (replaced by xgOrigin,ygOrigin on Jan 27, 2009)
317    o pkg/exf: fix a serious bug in exf_set_uv.F: do a rotation of the
318      interpolated wind field not only for curvilineargrid=.true., but also
319      for a rotated grid (rotateGrid=.true.)
320    o pkg/exf: add capability to bypass interpolation for runoff
321      by setting yet another CPP-flag
322    o eesupp/src, B-grid exchange:
323      add simple (6 tiles, non MPI) CS exch + standard interface S/R.
324    o autodiff
325      new CPP option ALLOW_TAMC_SINGLEPREC_COMLEV
326      allows to switch to single-prec common blocks;
327      corresponding switch occurs in tamc.h, integer isbyte
328      TAF store directivs "byte" and "kind" seem equivalent;
329      Most tamc.h have been updated correspondingly.
330    
331    checkpoint61i
332    o autodiff:
333      fix autodiff_sore/_restore indices for obcs
334      (spotted by I. Hoteit, M. Mazloff)
335    o pkg/autodiff, pkg/ctrl:
336      Add flag to reduce all tapelev I/O to single-prec.
337      In data.ctrl set
338        doSinglePrecTapelev = .TRUE.
339    o model/src/ini_curvilinear_grid.F, new grid-file format without EXCH2:
340      check in hack for SX8 compiler (for dxV, dyU); remove it afterwards.
341    o pkg/shelfice: fix bug with SHELFICEconserve flag, prepare for
342      real fresh water flux (not yet)
343    o pkg/mdsio & rw:
344     - add argument & option to S/R MDS_WRITEVEC_LOC (avoid Open/Close & write-meta)
345     - add simple interface S/R to MDS_WRITEVEC_LOC in pkg/rw: WRITE_GLVEC_RX.
346    o pkg/flt:
347     - replace FLT_INIT by 3-steps standard initialization S/R: readparms,
348       init_fixed & ini_varia.
349     - clean-up & simplify linear interpolation S/R:
350       move flt_bilinear.F -> flt_interp_linear.F ; add arg. myThid.
351     - fix some indices (mainly vertical index) ; add IMPLICIT NONE.
352     - more efficient I/O, using new options of MDS_WRITEVEC_LOC S/R.
353     - add vert. coordinate & horiz. indices to output files.
354     - change vertical position in initial condition, from index to depth [m].
355     - store horizontal (decimal) indices i,j in common block (instead of coord. x,y)
356       (easier to get to a curvilinear grid) ; delX,delY no longer used.
357    o pkg/ggl90: a few modifications:
358     - fix bottom boundary condition, and interpolation of KappaE
359       near top and bottom
360     - use same set of viscosity/diffusivity for TKE/momnetum/tracer
361     - add smoothing option as in Blanke and Delecluse (1993) (--> ALLOW_GGL90_SMOOTH)
362     - add a few options for mixing-length upper limit (--> mxlMaxFlag)  
363    o rename thetaMin,phiMin -> xgOrigin,ygOrigin
364      (maintain temporary backward compatibility, until next checkpoint)
365    
366    checkpoint61h
367    o pkg/diagnostics with "periodic averaging diagnostics":
368      fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
369    o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
370    o pkg/obcs: fix loop ranges for balancing code
371    o pkg/flt:
372     - improve criteria for finding which tile owns a float.
373     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
374    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
375      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
376      with ocean biogeo)
377    o pkg/flt:
378     - do some cleaning and fix the restart ;
379     - add output.txt in flt_example/results to get this pkg tested.
380    o genmake2: add an EXTENDED_SRC option and flag.
381       for now, cannot be turned on on command line (only through genmake_local)
382    o pkg/mdsio: read/write vector:
383     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
384     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
385       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
386     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
387      (drop to 4 digits matching for grad). But this test does not look very
388      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
389    
390    checkpoint61g
391    o pkg/flt:
392      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
393       + make OPTIONS file more standard.
394      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
395      - fix _BYTESWAPIO CPP-Flag
396      - standard reading of file-parameter "data.flt"
397      - fix argument list of S/R FLT_RESTART
398      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
399    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
400    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
401      a still unfixed compiler/optimization bug
402    
403    checkpoint61f
404    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
405      update results of global_ocean.cs32x15.icedyn test.
406    o move getcon.F from model/src to pkg/fizhi.
407    o pkg/exf: add parameter for extrapolation of temp up to the surface
408       and option to prevent negative evap (in bulk_largeyeager04 only).
409    o Prather Advection scheme: fix tracer conservation for divergent flow
410      (e.g., when using NonLin Free-Surface).
411    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
412    o gmredi (Visbeck-variable-K):
413     - add more parameters to Visbeck-variable-K.
414     - use a 5 points average for dSigmaR in Visbeck-K calculation
415       (more "homogenous": same stencil and same weights as in dSigmaH)
416     - update output of ideal_2D_oce experiment.
417    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
418      (#undef REAL4_IS_SLOW)
419     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
420       coordinate variable
421     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
422       (surface forcing fields), removes some of the functionality
423     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
424     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
425       probably not all: copy _RS surface flux fields to RL field before
426       calling DIAGNOSTICS_FILL
427     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
428       real*4 (CALL EXCH_*_RS) versions.
429     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
430       (generate new output).
431    
432    checkpoint61e
433    o gmredi (Visbeck-variable-K):
434      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
435      - change computation of Visbeck-K where Slope > Smax :        
436        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
437        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
438    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
439      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
440    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
441    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
442      does not become too large (to avoid precision problems in implicit-diffusion
443      solver); update ideal_2D_oce output.
444    o pkg ggl90:
445      - in ggl90_cal.F: compute only one set of visc/diff, used to
446        step forward TKE/T/S/momentum
447      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
448        have Prandlt =1)
449    o gmredi (fm07):
450      - add lower limit on Transition layer thickness + lower limit on 1/lambda
451      - allow to set few more params from data.gmredi
452    o pkg ggl90:
453          - add missing sqrt(2) factor in computation of mixing length
454            scale in ggl90_calc.F
455            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
456    
457    checkpoint61d
458    o adjoint modifs
459      - adapt to new field rhoInSitu
460      - allow to revert from StoreDynVars2D, StoreDynVars3D
461        to individual fields
462        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
463    o store 3-D (in-situ) density in commom block (DYNVARS.h)
464     - save 1 rho computation.
465     - no longer modify T & S inland when using down_slope pkg.
466    o gad_som : allow to switch to SOM advection for T & S without corresponding
467      pickup files (using new S/R: MDS_CHECK4FILE).
468    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
469      (for useSingleCpuIO to work in multi-threaded)
470    o pkg/shelfice:
471     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
472       with SHELFICEtopoFile in data.shelfice
473     - move code for reading ice shelf topography and modifying hFacC into separate
474       subroutines of the shelfice package
475     - separate initialisation of "fixed" and "variable" variables
476     - kTopC is not (yet) replaced by kSurfC, although this is possible
477    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
478    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
479      and rename:
480      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
481      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
482    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
483    
484    checkpoint61c
485    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
486      to add mass source/sink of fluid in the interior (3-D generalisation
487      of oceanic real-fresh water flux).
488    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
489    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
490    o new pkg: down_slope
491      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
492      - presently, modify T & S inland (dwnslp_calc_rho.F).
493        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
494      - implementation for ocean in P-coords not tested.
495      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
496    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
497      (to facilitate conversion of oceanic pkg to p-coordinate).
498    o change FIND_RHO to FIND_RHO_2D :
499      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
500    o new pkg: cheapaml
501    
502    checkpoint61b
503    o exch2:
504      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
505      - no longer depend on the order sequence (N,S,E,W).
506      - 3rd exchange no longer needed (tested with 24 tiles).
507      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
508      - exch_UV_A-grid readily available (but not yet tested).
509      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
510      (both are no longer needed) in exch_uv: no effect in forward run; but
511       get truncation error differences with adjoint exch.
512    o exch2:
513     - change index-bounds storage (moved from target to local tile,
514       more intuitive this way) ; rename/remove some variables.
515     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
516    
517    checkpoint61a
518    o exch2/matlab-topology-generator:
519      fix bug in index bounds for N-S internal exchange (hard to tell if this
520      had any effect on the solution).
521    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
522      is exceeded
523    o testreport: modify syntax of awk, so that it works also with
524      awk, and not only with nawk and gawk
525    
526    checkpoint61
527    o autodiff
528      Change default for TAF usage by removing argument '-nonew_arg'
529      This changes TAF subroutine argument list (ordering of active var.)
530      Omission of this flag leads to incompatibility w.r.t. TAMC
531      To restore TAMC-compatibility, need following modifs:
532      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
533      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
534      Tested TAF version is 1.9.22
535      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
536    
537    checkpoint60
538    --->>> This is the last checkpoint for which generating the adjoint
539    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
540    --->>> by default.
541    --->>> Future checkpoints will ommit this flag by default.
542    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
543    o pkg/grdchk: Add gradient check to etan0 perturbations.
544    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
545    o pkg/autodiff: more flexibility in zeroadj.
546      model/src: modifying do_oceanic_phys.F accordingly.
547    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
548    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
549      special setup of gmredi for which the adjoint is stable
550      enough for parameter optimization.
551    o bridging the gap between eddy stress and GM.
552      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
553          along with a change in CPP option (now ALLOW_EDDYPSI).
554      -> when using GM w/ GM_AdvForm:
555          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
556          is applied either in the tracer Eq. or in momentum Eq.
557          depending on data.gmredi (intro. GM_InMomAsStress).
558      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
559      The key modifications are in model/src/taueddy_external_forcing.F
560      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
561    
562    checkpoint59r
563    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
564      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
565      fix option to read coriolis(@ cell-corner) from files with CS-grid.
566    o pkg/mnc: add some attributes to standard 1D-coordinate variables
567    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
568      mass points, when using mnc for output
569      - add runtime parameter (missing_value, missing_value_int) to override
570        default (which is the value of getcon('UNDEF'))
571    o pkg/mnc: prepare mnc for the actual use of missing values with the
572      diagnostics package: small fix in mnc_cw_readwrite.template and more
573      initialisation of never used fields
574      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
575      versions
576    o pkg/thsice/thsice_ini_vars.F added default initial values so that
577      thermodynamics sea ice solver does not blow up when some initial fields
578      are missing.
579    o move from external_forcing_surf.F to ini_forcing.F
580      the p-coord. hack consisting in using pLoad to set phi0surf ;
581      update output of tutorial_global_oce_in_p (affected @ truncation level).
582    o Freshen up a bit hs94.1x64x5, notably:
583      remove rotationPeriod and tRef=5*0. (adjoint only), and add
584      exactConserv=.TRUE.
585    o pkg/generic_advdiff:
586      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
587      applies to files where Temperature & Salinity 2nd Order moments are used.
588    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
589      this uses a dynamically allocated internal state data structure
590      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
591      and requires a fortran 90 compiler
592    
593    checkpoint59q
594    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
595       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
596    o Refresh tutorial_global_oce_biogeo, notably:
597      - change bathymetry (put back seamounts in ACC, use hFacs)
598      - change EOS (POLY3 --> JMD95Z)
599      - use Bryan-Lewis vertical diffusivity
600      - use multidimensional advection
601      - remove old virtual virtual in dic pkg, now done through ptracer pkg
602      - change a couple of parameters in dic pkg
603    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
604    o pkg/obcs: change default to OBCSfixTopo = .true.,
605      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
606      - replace "debugMode" with "debugLevel .GE. debLevB"
607    o implementation of TAF directives for gchem,cfc,dic
608    o remove "exp5" (replaced by tutorial_deep_convection).
609    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
610      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
611      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
612      --> changes results in exp4, seaice_obcs
613    o tutorial_deep_convection :
614      update the set-up and increase resolution and domain size ; start
615      from pseudo initial conditions = output at t=120mn in order to see
616      something happening when running testreport.
617    o pkg/seaice: add os7mp as an advection scheme
618                  add check for advection schemes
619                  add a flag for restoring T and S underneath sea ice
620    o pkg/my82: add netcdf-support and diagnostics
621    o thsice pkg:
622      - Now hsMax limits snow height by turning it into ice following
623        flooding scheme (and now conserving energy)
624      - Slight rewriting of the formula in thsice_calc_thick.F
625      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
626      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
627    
628    checkpoint59p
629    o gchem / dic / cfc :
630      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
631      - add new parameter files: "data.dic" & "data.cfc" ;
632      - various re-arrangement in initialisation & header file ;
633      - fix tutorial_global_oce_biogeo for multi-threaded test.
634    o pkg/dic: test for "pickup_dic" file when restarting ;
635      if no pickup-file, can restart with a re-initialised pH (same as it did
636      before) providing pickupStrictlyMatch is set to False.
637    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
638      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
639    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
640      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
641    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
642     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
643       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
644    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
645       scheme to use for vorticty-term ;
646     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
647       (with default selectVortScheme, return to original discretisation)
648     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
649    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
650    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
651      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
652      also fix diagnostics VISCAHW & VISCA4W.
653    
654    checkpoint59o
655    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
656    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
657      move a few statemens out the main loop into separate loops
658    o pkg/shelfice:
659      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
660        (kg/m^2/s), does not break tests, because in verification/isomip,
661        rhoConstFresh=rhoConst (by accident)
662      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
663      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
664        new file model/src/seawater.F, so that they are available for all pkgs.
665      - convert potential temperature into in-situ temperature. This changes the
666        isomip tests => update tests
667    o add a flag writePickupAtEnd (default=true) to be able to suppress
668      writing a pickup at the last timestep
669    o tools/mpack-1.6 :
670      - disable automake (not working) and autoconf (not needed).
671      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
672        also cleaner with much less compilation warnings.
673    o pkg/profiles:
674      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
675      (for "less than 32 characters name" compiler requirement)
676    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
677      conditions that have a different sampling frequency than S/T/U/V obcs
678    o pkg/diagnostics (stats-diags):
679      - fix global Min/Max in case 1 processor get only empty tiles
680    o genmake2: replace (4 times)
681         make genmake_tc_1.o >> genmake_warnings 2>&1
682      with
683         COMM="$CC $CFLAGS -c genmake_tc_1.c"
684         echo $COMM >> genmake_warnings
685         $COMM >> genmake_warnings 2>&1
686      to make genmake2 always see the value of CC as specified in the optfile.
687    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
688      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
689      - modify verification advect_cs test to test SOM-advection on CS-grid.
690    o pkg/ctrl:
691      - Rewrite of ctrl_map_ini_ecco.F,
692        introducing a generic routine (ctrl_map_ini_gen.F).
693      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
694    
695    checkpoint59n
696    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
697      number in dedicate array "hdiag":
698      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
699        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
700      - many small changes (integer format) for large number of diagnostics
701      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
702        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
703    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
704      usingSphericalGrid, this allows to define the rotated grid coordinates
705      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
706      geographical coordinates according to the inverse of the rotation defined
707      by the Euler angles, so that Coriolis parameter and online-interpolation by
708      exf works with the geographical coordinates on XC/YC/XG/YG.
709      Naturally, this feature does not work with all packages, so some
710      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
711      profiles), because there the coordinates are assumed to be regular
712      spherical grid coordinates.
713    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
714      - introduce isopycnal diffusion coefficient control.
715    o tools/adjoint_options:
716      - additional control vector components.
717    o pkg/mnc: have mnc create marginally meaning full coordinate variables
718      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
719    o pkg/mypackage:
720      - add example of read/write pickup for state-var ;
721      - add entry points to the main code for state-vars diags & write-pickup.
722    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
723      transitions for useExfYearlyFields
724      - add new subroutine that determines the file to read from for
725        use*YearlyFields = .TRUE. and .FALSE.
726      - add a verification experiment to global_with_exf that tests
727        useExfYearlyFields with USE_EXF_INTERPOLATION defined
728    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
729      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
730      subroutines (which could be generated from a template, because they are
731      almost identical), for now they are included in obcs_prescribe_read.F for
732      simplicity
733    o pkg/exf:
734      - add a little more diagnostic to exf_interp_read (in analogy to
735        mds_read_field, can be turned off with debugLevel < debugLevA=1)
736      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
737        ugly but fast by unrolling short inner loops, inserting a unroll=8
738        directive in routine lagran, and splitting a loop and making do while the
739        outermost loop (the latter requires the intoduction of index arrays)
740    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
741    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
742      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
743    o verification/seaice_obcs: updated for restart test and latest options
744    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
745      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
746      for now this is only available for the C-grid code and also within
747      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
748    
749    checkpoint59m
750    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
751      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
752    o gad_som : fix flux output (& diagnostics) to have same units as other  
753      advection scheme fluxes (was previously multiplied by deltaT).  
754    o added verification/seaice_obcs both to test seaice open boundaries
755      and to provide an example matlab scrpt for generating them
756    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
757    o pkg/salt_plume: clean up salt_plume_frac.F to
758      remove redundancy in PlumeMethod 1 and 4
759    o pkg/kpp: added saltplume diagnostics
760    o pkg/obcs and pkg/seaice:
761      - do not set uice and vice to zero when OB*icefile are unspecified
762      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
763      - moved seaice tracer obcs after call to seaice_growth
764    o pkg/salt_plume: added various options for salt plume depth
765      criterion and for vertical distribution of the salt
766    
767    checkpoint59l
768    o pkg/ptracers: new version of ptracers pickup:
769      read meta file and write only fields which are needed to restart.
770      ( same logic as main pickup file ; also using pickupStrictlyMatch )
771    o pkg/seaice:
772      - add timescale for melting due to warm mixed layer as a means of
773        setting SEAICE_availHeatFrac more conveniently
774      - add a CPP-flag/runtime parameter check for flooding algorithm
775      - reformulated availHeat in seaice_growth.F to be independent of AREA
776    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
777      unit changes
778    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
779    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
780      SX vector computer.
781    o pkg/seaice:
782      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
783        seaice forcing fields can now be read only through pkg/exf
784      - removed some unused halos
785    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
786    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
787      or U/VICE from U/VWIND before computing U/VSTRESS
788    
789    checkpoint59k
790    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
791      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
792    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
793      all experiments pass when compile with un-initialised var. checking option.
794    o added pkg/salt_plume
795    o script to test restart (for now, in MITgcm_contrib/jmc_script)
796    o pkg/seaice: new read/write pickup version.
797      read meta file and write only fields which are needed to restart.
798      ( same logic as main pickup file ; also using pickupStrictlyMatch )
799    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
800    o lab_sea.hb87: modify the domain & update output.hb87.txt :
801      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
802      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
803      process. Fixed here by closing the domain at the Northern boundary.
804    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
805    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
806      a set of consecutive levels in/from a 3-D array.
807    o pkg/ptracers:
808      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
809      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
810    
811    checkpoint59j
812    o in pkgs: dic, obcs, offline, rbcs:
813      standard way to compute coeff. for time interpolation between 2 time reccords
814      which retains full precision (& make results less dependent on compiler).
815      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
816    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
817      packages instead of reading ice cover and wind speed separately
818    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
819     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
820      to allow to compile customized code before the update)
821    o cleaning-up:
822      - fix CPP instruction syntax in pkg/obcs
823      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
824        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
825      - fix some threads issue in IO parts.
826    o pkg/dic:
827      - add tons of "_d 0" (--> much better testreports !)
828       and then update outputs of tutorial_global_oce_biogeo
829    o pkg/mom_fluxform:
830      add a special version of momentum advection intended to conserve momentum
831      next to a bathymetry step or a coastline edge. (default = off = #undef)
832    o new read/write pickup version:
833      - for now, only implemented for main (mdsio) pickup file.
834      - write out only what is needed to restart; merge pickup_nh , pickup_ph
835        and main pickup together.
836      - read meta file; read only what is needed to restart; stop if a field
837        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
838        if it make sense (even if the restart is not perfect).
839      - if no meta file, assume that pickup to read corresponds exactly to
840        a pickup that would currently be written.
841      - read pickup written in the old format (until checkpoint59i) if it
842        recognizes an old meta file (no field-list).
843      - add a meta file in exp. which starts from a pickup: 2 cases:
844        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
845         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
846        b) a meta file describing the content of the associated pickup file
847         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
848    o pkg/mdsio & pkg/rw:
849      - new routine to read a meta file ; new set of routine to read
850        Multiple-fields file (with meta file).
851    o added open boundary conditions capability for seaice
852        HSNOW, HSALT, UICE, and VICE
853    
854    checkpoint59i
855    o adjoint:
856      * fix multiDimAdvection adjoint
857        (partial recomputation problem by TAF for fVerT(:,:,kDown)
858        and comlev1 size definition (maxpass vs. max. number of tracers)
859      * verification/global_ocean.90x45x15 adjoint now tests
860        NLFS and multiDimAdvection using DST3 (=30)
861      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
862    o pkg/kpp: add "_d 0" to real constant (if missing);
863      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
864      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
865    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
866      for internal parameters related to restart process (formerly from PARAMS.h)
867      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
868    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
869      as argument. (only atm2d & obcs write_pickup have not yet been updated)
870    o pkg/monitor:
871      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
872      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
873      - account for deep Atmosphere factor and density factor (anelastic)
874    o added open boundary conditions capability for seaice HEFF and AREA
875    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
876      thermodynamics
877      - requires a little reorganization, which affects the testreport results
878        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
879        so that now the conservative form is tested
880      - add a few comments
881    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
882    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
883    o add new diagnostics to seaice: advective, diffusive fluxes (only for
884      multidim-advection, for scheme 2 they are not filled) and transports,
885      thermodynamic growth rates
886    o change units of EmPmR (inside the code, + within coupling interface)
887      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
888      Affects results @ truncation level (cg2d match) and update output of
889       experiments: lab_sea(6), global_ocean.90x40x15(10),
890      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
891      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
892      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
893      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
894    
895    checkpoint59h
896    o pkg/exf:
897      - improve vectorization by moving if-statement out of loops in
898        exf_mapfields, exf_radiation
899      - exf_bulkformulae.F: introduce 2D fields and vectorize code
900    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
901    o testreport:
902      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
903        monitor & update offline_exf_seaice exp. output.
904      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
905    o pkg/seaice:
906      - bug fix in the evp solver: boundary conditions were affected be
907        masking of zMax/zMin (changes results)
908      - minor bug fix in boundary conditions in seaice_calc_strainrates
909        (changes results for no_slip)
910      - seaice_lsr.F: make interpolation of eta dependent on boundaries
911      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
912      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
913        stress formulation and no-slip boundary conditions
914    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
915      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
916    o pkg/seaice: a first HSALT time stepping equation has been checked in
917    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
918      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
919      without requiring DO-IF statements
920    o pkg/thsice:
921      use continuous power-law function for partition of energy between lateral
922      melting/freezing and thinning/thickening ; old code using step function
923      still available with #undef THSICE_FRACEN_POWERLAW
924      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
925    o testreport: change AD testing : check against results/output_adm.txt
926      using same scripts as for forward test.
927    
928    checkpoint59g
929    o adjoint testing: in preparation for changing testreport:
930      - output format: cost and grad written on separated lines
931      - ad output results in directory "results" (instead of "results_ad")
932    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
933    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
934    o pkg/ecco: allow user defined cost function contributions
935    o testreport:
936      Allow to choose (per experiment) the list of tested output variables
937       and the main variable (used to issue a pass/FAIL ) ;
938      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
939      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
940      Also modify printing of summary:
941       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
942       b) echo the list of tested variables in the individual summary.txt of
943          each experiment.
944    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
945      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
946      (but still depend on the tile decompostion of the domain).
947    o pkg/seaice: change a discretization detail to make the B-grid code
948      "more symmetric". This change is likely to remove all "ridges/leads" that
949      where quasi-aligned with the grid in B-grid solutions. It may also be
950      the solution to the stress coupling issues with the B-grid.
951    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
952      remove .cvsignore from input dir. (since testreport no longer run here).
953    o pkg/thsice:
954     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
955     - fix reshaping of sea-ice just after advection:
956       melt all the ice only if ice-volume is too small.
957     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
958       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
959     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
960    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
961      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
962    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
963      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
964      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
965      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
966      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
967      -> update output.txt
968    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
969     this affects truncation error: -> update output.txt of exp:
970      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
971      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
972    
973    checkpoint59f
974    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
975    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
976      a bounded range (in forward mode)
977    o pkg/ecco, ctrl, autodiff and mom_common:
978     internal parameter controls, completements of implementations
979    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
980    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
981      (not seem any difference in testing results).
982    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
983       at face corners.
984    o pkg/generic_advdiff:
985     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
986      loop range indices for computing vertical advection tendency
987      and do the calculation in the interior only (no overlap) ;
988      for now, only implemented for SOM advection (to save CPU time).
989     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
990    o exch2 adjoint
991      First set of changes:
992      - add exch2 hand-written adjoint templates
993      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
994        This will require cleanup in pkg/autodiff/*.F
995        (changed routines currently kept separate in verif. code/)
996      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
997        that used to hide exch2 or cubed-sphere specific code
998        (commented via 'cph-exch2')
999    o pkg/seaice
1000      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
1001    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
1002       output of global_ocean.cs32x15.thsice .
1003    
1004    checkpoint59e
1005    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
1006      for B-grid vector (not yet tested) and C-grid vector (<- only used
1007      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
1008    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
1009      (#ifdef ALLOW_SALT_PLUME)
1010    o gather_2d/scatter_2d: removed halo regions
1011    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
1012      scheme and the corresponding test case (under front_relax dir). For now,
1013      only available with Skew-flux form and not yet tested in realistic set-up.
1014      adjoint: store directives updated, but gradient checks deteriorated,
1015      so maybe GM/Redi adjoint is now broken.
1016    o seaice adjoint
1017      * add AREA, HEFF, HSNOW as control variable
1018        (should not change lab_sea results)
1019      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
1020    o pkg/seaice:
1021      * added computation of saltFlux in seaice_growth;
1022        For time being, sea ice salinity is assumed constant
1023        contribution of snow flooding to freshening of sea ice is neglected.
1024        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
1025        defaults to 0.0 in order to maintain backward compatibility.
1026        Typical values for SEAICE_salinity are 4 to 10 g/kg.
1027      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
1028      * added SEAICE_availHeatFrac, which specifies fraction of surface level
1029        heat content used to melt or grow ice
1030      * commented out cap of HICE: it helps keep ice thinner
1031      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
1032      * applied OBCS T/S mask to HEFFM sea ice mask
1033    
1034    checkpoint59d
1035    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
1036     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
1037     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
1038    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
1039     and change default value of parameter "GM_Small_Number";
1040     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
1041       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
1042       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
1043    o pkg/ecco: cost function when applying pkg/smooth to controls
1044    o pkg/ctrl: add forcingPrecond run time parameter
1045    o pkg/seaice:
1046     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
1047     - fix bug in metric terms of u-equation in LSR solver (implicit part),
1048       changes verification/lab_sea
1049     - rearrange implicit part of u-equation in LSR solver to make it easier to
1050       read, understand, and debug. This causes changes at the truncation level.
1051     - fix (serious) bug in the boundary conditions (sign error in the implicit
1052       part) of the LSR solver. Changes all LSR results.
1053     - fixed problem with HSNOW initialization to avoid thick snow when AREA
1054       is initilized with small values - does not change lab_sea results.
1055     - added HsnowFile initialization capability
1056    o pkg/smooth: addition to model/src and pkg/ctrl so allow
1057     initialization of pkg/smooth and application to control vector
1058    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
1059    o dependencies: pkg/profiles requires pkg/cal
1060    o pkg/profiles:
1061     - added option ALLOW_PROFILES_GENERICGRID
1062         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
1063         that interpolation information (grid points and coefficients) is provided
1064         within the netcdf input files.
1065         -> sample matlab scripts can be found in MITgcm_contrib/gael
1066         that allow you to prepare netcdf input files.
1067     - also modified: cleaner include statements, cleaner error print statements,
1068       cleaner stops when error, and more tests of the netcdf input files consistency.
1069    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
1070    o pkg/seaice:
1071     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
1072       requires a new routine: seaice_diagnostics_fill.F
1073     - make sure that seaice does not move if not forced (pressure replacement
1074       method, Hibler and Ip, 1995), changes results
1075     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
1076     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
1077       It is turned off by default (=-1.), because it changes the results.
1078     - make it possible to read AREA from a file, too.
1079    
1080    checkpoint59c
1081    o add S/R and diagnostics for oceanic mixed-layer depth
1082    o move GMRedi call after all vertical mixing schemes (including KPP)
1083    o pkg/thsice:
1084     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
1085      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
1086    o pkg/obcs:
1087     - bug fix for balance code
1088    o pkg/seaice:
1089      - allow values of SEAICE_elasticParm > 1
1090      - add new parameter SEAICE_evpTauRelax as an alternative
1091        to SEAICE_elasticParm
1092      - make lsr boundary conditions free slip (by default), changes result
1093      - add code for no slip boundary conditions for lsr
1094      - set minimum of zeta to zero (and not 4e8) (changes results)
1095      - add a cap on AREA after advecting AREA if seaice_growth is not called
1096    o change calculation of Visbeck K:
1097      - no longer depend on tapering scheme; instead, compute slope (limited
1098        by GM_maxSlope). this is equivalent to what was comuted before with
1099        clipping or linear tappering.
1100      - fix vertical averaging (wrong by 1/2 level)
1101      - leave the old version (but will not be maintained) within
1102        #ifdef OLD_VISBECK_CALC / #endif
1103      - update output of exp. ideal_2D_oce
1104    o change error catch in calc_r_star to improve vectorization
1105    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
1106      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
1107    o adjoint:
1108      Re-organized adjoint checkpointing according to Matt Mazloff
1109      (but with modifs/completions/cleanups)
1110      Storing is now bundled into large arrays to optimized I/O
1111      (and second step in cleanup of the_main_loop)
1112    
1113    checkpoint59b
1114    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
1115      - export/import (between ocean & coupler) fields needed for ocean DIC.
1116    o pkg/seaice:
1117      - get rid of three more exchanges seaice_calc_viscosities (required
1118        different loop boundaries in seaice_lsr and seaice_ocean_stress)
1119      - bug fix in seaice_ocean_stress (update of lab_sea required)
1120      - reduce loop boundaries to necessary minimum also in seaice_evp
1121      - go back to the old way of computing deltaC/Z as the adjoint likes that
1122        better
1123    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
1124      passive tracer to an Age Tracer) + update output.txt
1125    o pkg/exf:
1126      - implement A-grid / C-grid selection for wind-stress input files.
1127      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
1128      for now, in exf_bulk_largeyeager04.F only :
1129      - change implementation for case where windspeed + 2. components wind-stress
1130        are read-in. AND use rhoConstFresh to convert evap.
1131    o pkg/seaice:
1132      - use correct EXCH_UV for wind-forcing (on A-grid).
1133      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
1134        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
1135    o pkg/exf:
1136      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
1137      EXF_INTERPOLATION:
1138      - merge global_with_exf/code version of exf_interp_read.F
1139        to the main code ;
1140      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
1141        reading the file ; Important: This options needs to be defined to recover
1142        previous code.
1143        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
1144      - no longer loose real*8 precision along the way when using exf_iprec=64.
1145    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
1146      - change discretisation of evp-solver in order to avoid another exchange
1147        (changes lab_sea) and clean up a little
1148      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
1149        help the adjoint (this also changes the results slightly)
1150      - add a few "_d 0" where they had been missing in seaice_evp.F
1151      - cleaning up: remove unused seaice_calc_rhs.F
1152    o pkg/exf: some cleaning-up:
1153      - change various "constants" into runtime parameters
1154      - cleaned-up Large&Yeager04 routine which should eventually
1155        replace exf_bulkformulae.F (changed names of S/R and CPP)
1156        and merged various ALLOW_ATM_WIND options
1157     only used with thsice pkg (in thsice_get_exf.F):
1158      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
1159        which are used when useStabilityFct_overIce=TRUE (= the default)
1160      - change default values of ice & snow emissivity and scale downward LW
1161        by ice & snow emissivity.
1162    o pkg/thsice:
1163     fix few little problems, in thsice_calc_thickn.F:
1164      - growth vertically (and not laterally) if iceFrac == iceMaskMax
1165      - melt only laterally if hIce < hThinIce (as the comments say)
1166      and in thsice_extend.F:
1167      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
1168      - start to form ice as soon as the minimum ice-volume is reachable.
1169     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
1170      and cpl_aim+ocn
1171    o pkg/kpp
1172     - move computation of surface related input fields to KPP into a new
1173       subroutine kpp_forcing_surf.F
1174     - remove wrong (within bi,bj loops) EXCH calls.
1175     - little cleaning (add argument myThid in last position, cvs header ...)
1176     - for now, fix conservation problem by exchanging KPPviscAz (may not
1177       be the best fix)
1178    o pkg/seaice
1179     - check for inconsistent evp parameter/cpp-flag combination
1180     - remove leftover errIO flat for obsolete name list error handling
1181    o OpenAD
1182     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
1183    
1184    checkpoint59a
1185    o pkg/seaice: some parameter clarifications and a little bit of clean up
1186    o pkg/thsice: rename run-time parameters:
1187       himin       -> hIceMin
1188       himin0      -> hThinIce
1189       hihig       -> hThickIce
1190       i0          -> i0swFrac
1191       transCoef   -> bMeltCoef
1192       frac_energy -> fracMelting
1193      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
1194       with default values (for now) that do not change the results.
1195      remove old version of thsice vars advection in pkg/seaice.
1196    o in FFIELDS.h:
1197      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
1198      - make pLoad & sIceLoad always available (but still only used if
1199         ATMOSPHERIC_LOADING is #define).
1200    o pkg/kpp: replaced _KPP_RL with _RL
1201    o bug fixes for vertical diffusivity computations when both KPP and
1202        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
1203        are no longer updating the vertical diffusivity array
1204        (passed as argument) but are (re-) setting those arrays.
1205    o pkg/seaice: fix bug in evp solver, while doing that
1206      - change (improve?) discretization of stress computations for both
1207        cgrid-lsr and evp solver
1208      - add a new routine to compute strain rates
1209      - the above changes lab_sea results
1210      - add no slip conditions for evp solver (off by default), lsr-version
1211        may follow
1212      - fix exchange for shear at Z-points (does not change lab_sea)
1213      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
1214        (to force the user to pick a time step since there is not "safe" way
1215        of choosing it)
1216      - add principal stress diagnostics
1217      - rearrange fields for evp a little to avoid having to call a: too many
1218        exchanges and b: exchanges for stress trensor components which we do
1219        not have.
1220      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
1221        of evp, complete rewrite for lsr case (latter is does not yet work
1222        in all cases)
1223    o pkg/kpp: add code to have mixing in shelf ice caverns
1224      - add myThid to all kpp routines (long overdue)
1225    
1226    checkpoint59
1227    o pkg/exf:
1228      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
1229        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
1230      - move exf header files from lower_case.h to UPPER_CASE.h ;
1231        add missing cvs Header & Name
1232      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
1233      - add namelist param. selectStressGridPosition, exf_monFreq
1234      - retire many _CLIM routines, and remove data.exf_clim
1235        + params moved to data.exf
1236        + climsst, climsss now handled by exf_set_gen, i.e.
1237          climss?period=0 refers to constant field,
1238          climss?period=-12 to monthly forcing
1239      - split up namelists in data.exf
1240    o pkg/seaice:
1241      - remove seaice_exch and seaice_exch_uv
1242      - remove superfluous exchange of theta
1243      - add myThid to seaice_budget_ocean/ice
1244      - add new interface for atmospheric wind forcing (C-grid only)
1245        + new routine
1246        + two new field (taux, tauy for stress over ice)
1247        + removed one global field (DAIRN) for C-grid case only
1248    o pkg/thsise
1249      - 2nd set of modifs for thsice adjoint in conjunction with exf
1250    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
1251    
1252    checkpoint58y_post
1253    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
1254      vertical diffusivity, similar to that in MOM4; turned on using
1255      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
1256      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
1257    o Added capability for 3D specification of background vertical diffusion
1258      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
1259      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
1260      "data" file that contains the 3D vertical diffusivity coefficients.
1261    o ice dynamics (pkg/seaice) with thsice thermodynamics:
1262      - add code within pkg thsice to advect & diffuse sea-ice fields
1263      similar to (and will replace) what has been added in  seaice_advdiff.F,
1264      but: - conserving Mass, Heat & Salt.
1265           - better when using non-linear advection scheme (not yet fully tested)
1266           - can also be used in atmospheric set-up (for now, only the diffusion).
1267    
1268    checkpoint58x_post
1269    o IO option for global-file compact format:
1270      - add options when generating topology (utils/exch2/matlab-topology-generator)
1271      - add I/O capability (pkg/mdsio).
1272      - adapt utils/matlab/rdmds.m to read this format.
1273      for now long-line format not yet supported by pkg/mdsio (& exch2).
1274    o shelfice: add a few diagnostics
1275    
1276    checkpoint58w_post
1277    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
1278      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
1279      (and replace horiVertRatio in NH code).
1280      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
1281                         and tutorial_plume_on_slope (sensitive to truncation)
1282    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
1283      directly to drive seaice model (C-grid only)
1284    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
1285     - reintroduce computation of wind from stress,
1286     - compute tau (in exf_bulkformulae.F) from windstress averaged to
1287       mass points to avoid tau = 0
1288     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
1289    o rdmnc.m: make it work with "global" files created with gluemnc
1290    o rdmnc.m : some improvements in dealing with singleton dimension
1291      (tested on all testreport mnc output files).
1292    o genmake2: disable pkg/profiles if netcdf test fails.
1293    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
1294    o move call to cal_readparms up to make calendar parameters/variable available
1295      to all packages
1296    
1297    checkpoint58v_post
1298    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
1299      useDynP_inEos_Zc tested.
1300    o pkg/exf: changes to properly interpolate/mask/scale initial fields
1301    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
1302      and portions thereof.  See read_cs.txt for description and examples.
1303    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
1304      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
1305      following the great-circle arc between those 2 points.
1306    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
1307      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
1308    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
1309     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
1310     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
1311     - still needs work (not working with some options ; efficiency to improve)
1312       and serious testing.
1313     - use this scheme for temperature & salinity in 2 advection test exp.:
1314       advect_xy & advect_xz, respectively.
1315    
1316    checkpoint58u_post
1317    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
1318    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
1319    o testreport: add option "-skipdir" to skip some test.
1320    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
1321      momentum calculation.
1322    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
1323    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
1324      remove checkpoint.F and the_correction_step.F (no longer used);
1325      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
1326    o add option (linFSConserveTr) to correct for tracer source/sink due to
1327      Linear Free surface
1328    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
1329    o pkg/thsice: fix reading mnc-pickups
1330    
1331    checkpoint58t_post
1332    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
1333    o pkg/mdsio:
1334     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
1335       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
1336       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
1337     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
1338     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
1339       either MDS_READ_FIELD or MDS_WRITE_FIELD )
1340     - new S/R (to replace MDSWRITEMETA), which allows to write more
1341       informations (variable names, time ...) to meta files.
1342     - modify rdmds.m to give back the meta file content.
1343    o pkg/diagnostics: change vertical interpolation to be safer, and more
1344       flexible (define p-levels to interpolate to in data.diagnostics);
1345      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
1346       diagnostic pointer.
1347    o pkg/seaice: more cleaning up of seaice_growth, added many comments
1348    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
1349    o fix multi-category seaice:
1350     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
1351       SEAICE_MULTICATEGORY
1352     - fix short wave heat flux
1353    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
1354       and allow to use EVP solver. Change forward lab_sea: test both EVP
1355       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
1356    o Initial check-in of lab_sea adjoint
1357      (very similar to natl_box_adjoint/code_seaice)
1358      * used C-grid and EVP solver
1359      * used KPP, GM/Redi
1360      * uses inAdExact=.TRUE.
1361      * gradient checks fail for both ADM and TLM
1362        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
1363        f.d. gradients actually seem more problematic than ADM, TLM gradients;
1364        issue is related to forward mismatch between g77 an ifort
1365    o pkg/seaice: overhaul of thermodynamics
1366     - growth.F and groatb.F are replaced by new routine seaice_growth.F
1367     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
1368     - move a few global fields out of SEAICE.h into seaice_growth.F and
1369       make them 2D (FICE/QNETO/ ...)
1370     - remove FO (it is the same as QNETO)
1371     - introduce a few local fields to avoid modifying external fields such
1372       as atemp, etc.
1373    
1374    checkpoint58s_post
1375    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
1376      changed exf_set_gen.F so that
1377        genperiod=0 means input file is one time-constant field and
1378        genperiod=-12 means input file contains 12 monthly means
1379    o CG2D: use pre-computed solver main-diagonal (stored in common block);
1380      this affects truncation error ; generate new output file for exp. which
1381      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
1382        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
1383        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
1384        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
1385        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
1386        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
1387    o start implementation of deep-atmosphere and anelastic formulation
1388    o verification: remove 2nd copy of input files and use script "prepare_run"
1389      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
1390    o mom_common/vecinv/fluxform: fix a few initialisation isssues
1391    o profiles: fix for multithreaded case
1392    
1393    o diagnostics: rename few diags:
1394      s/'PRESSURE'/'RCENTER '/g
1395      s/'TICE    '/'oceFreez'/g
1396      s/'TAUX    '/'oceTAUX '/g
1397      s/'TAUY    '/'oceTAUY '/g
1398      s/'SWFLUX  '/'oceQsw  '/g
1399      s/DIFx/DFxE/g
1400      s/DIFy/DFyE/g
1401      and add few ocean-forcing diagnostics:
1402      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
1403    o modifications to pkg/seaice/growth.F and budget.F, which change results of
1404      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
1405      as actual snow thickness.  It now refers everywhere to effective snow
1406      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
1407    
1408    checkpoint58r_post
1409    o modifications to pkg/seaice/growth.F, which change results of
1410      lab_sea experiment: fixes pertain to melting snow over open water, to
1411      masking EVAP under sea ice, and to using the correct AREA variable for
1412      computations of EVAP, PRECIP, HSNOW, and GHEFF
1413    o add ability to read bathy, salt, and theta using MNC (off by def)
1414    o add flooding algorithm and advection of HSNOW for pkg/seaice;
1415      both are turned off by default and do no change any results
1416    o seaice advection with pkg/thsice: a step toward the use of non-linear
1417      advection scheme, but #ifdef or commented out for now (requires more EXCH).
1418    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
1419      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
1420      in natl_box (affects results @ truncation level: update output.txt)
1421    o multi-threading and IO:
1422      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
1423      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
1424        (needed to work with SingleCpuIO): tested in all verif. exp.
1425    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
1426      affects the results (but none of the verification test uses this scheme).
1427    o Adding some pkg/diagnostics capability to pkg/seaice
1428      (will certainly be subject to changes)
1429    o ctrl: adding new control variables:
1430      lwflux, lwdown, evap, snowprecip, apressure, runoff
1431    
1432    checkpoint58q_post
1433    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
1434      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
1435      high_res_cube configuration by 4% on Columbia.
1436    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
1437      add (in global_with_exf/code) a version of EXF_INTERP_READ without
1438      dynamical allocation (seems to work in multi-threaded).
1439    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
1440      single CPU io) so that TAF does not have to see EESUPPORT.h
1441    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
1442    
1443    checkpoint58p_post
1444    o obcs: stop if obcs is used with useCDscheme = .true.
1445    o shelfice:
1446     - fix a sign error so that no slip at shelfice interface works
1447     - remove stop for combination non-hydrostatic code and shelfice. That does
1448       not mean, that the results are correct, but at least they are numerically
1449       stable
1450    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
1451    o added adjoint exch routined for all exch*3d* routines
1452      and updated flow directives
1453    
1454    checkpoint58o_post
1455    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
1456      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
1457    o change controling S/R for writing pickup file (new S/R do_write_pickup)
1458      and clean-up reading/writing of pickup files.
1459    o fix local version of read/write pickup (NH part) in rotating_tank/code
1460    o simplify EXCH interface:
1461     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
1462     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
1463    o added the regrid package
1464    o shelfice:
1465     - add a simple boundary layer scheme to reduce noise
1466     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
1467    
1468    checkpoint58n_post
1469    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
1470       local variable (not in common block).
1471    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
1472      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
1473      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
1474        to work with SingleCpuIO.
1475    o add "_d 0" to real constant of pkg/cfc subroutines ;
1476       update exp. cfc_exemple & tutorial_cfc_offline output files.
1477    o multi-threading and IO:
1478      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
1479        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
1480      - barrier before and after reading.
1481      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
1482      - avoid using MDS_WRITELOCAL for LAND pkg output.
1483      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
1484        common-block variables ; Allows multi-threading with master-thread IO.
1485    o change default MAX_NO_THREADS from 32 to 4 ;
1486      and stop cleanly when MAX_NO_THREADS is too small.
1487    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
1488    
1489    checkpoint58m_post
1490    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1491       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1492    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1493       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1494       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1495    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1496        add MITgcm_tutorials (= code + all the tutorials)
1497    o ecco, option to compute cost for total ssh (mean+anom)
1498    o consistent with addition of ptracer and ssh in pkg/profiles
1499    o profiles: adding ptracer and ssh
1500    o testreport: change multi-test output-file name
1501      (from output.txt.{name} to output.{name}.txt)
1502    o profiles: now ok for mutli-tiles case
1503    o seaice: add 4 parameters for different advection schemes for area,
1504      (effective) seaice thickness, enthalphy, and snow height. Their default
1505      is the standard parameter SEAICEadvScheme
1506    o calc_gw:
1507     - add cosFacU in zonal viscous flux (harmonic.visc.).
1508     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1509       of tutorial_plume_on_slope.
1510    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1511    o calc_gw: true flux-form, account for horizontal grid spacing.
1512      update rotating_tank results, but not plume_on_slope (affected at
1513      truncation level, 11 digits).
1514    
1515    checkpoint58l_post
1516    o calc_gw:
1517     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1518     - remove side-drag for now (need to fix it); update plume_on_slope results.
1519     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1520    o commit code to make SST/SSS weights spatially variable
1521      (based on either variable in-situ or variable initial T/S weights)
1522    o pkg/ecco:
1523      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1524        now based on horizontally varying weights wthetaLev, wsaltLev
1525      * cost_averagesflags now returns year indices in addition to day, month
1526      * sflux balance is performed on annual basis
1527        (sflxumm, sfluxmm2, bal_sfluxmm)
1528      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1529        including separate counting and multipliers
1530    o pkg/rbcs
1531      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1532    
1533    checkpoint58k_post
1534    o testreport:
1535     - always build in dir. "build" (if not there, mkdir build instead of building
1536       & running in input)
1537     - run in dir run (if it exists), in build otherwise.
1538     - call prepare_run (if input/prepare_run exists)
1539     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1540    o pkg/exf modifications to interpolation and rotation routines for more
1541       reasonable treatment of North Pole singularity: for tracers North Pole
1542       value is set to northernmost zonal-mean value, for zonal velocity it is
1543       set to zero, and for meridional velocity it is set to northernmost value.
1544    o pkg/exf/exf_check_range.F
1545     - add tile index to diagnostics and move stop statement to the very
1546       end of the routine.
1547    o pkg/diagnostics: (diagnostics_main_init.F)
1548      define title of isomorphic variables according to the current config.
1549    o pkg/thsice with pkg/seaice dynamics:
1550    - fix domain of computation (interior only, required for exf) and do exchanges
1551    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1552    o towards a standard way of dealing with multi-threading in MONITOR
1553      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1554    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1555       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1556    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1557    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1558    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1559       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1560    o tracer advection:
1561     - clean-up and simplify calc_common_factors.F
1562     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1563       advection subroutine (but still not used within DST advection S/R)
1564    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1565    
1566    checkpoint58j_post
1567    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1568      from file (collects calls previously in FORWARD_STEP)
1569    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1570    o adjoint store dir. adjusted accordingly
1571    o genmake2
1572      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1573    
1574    checkpoint58i_post
1575    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1576      on wind stress (SEAICEstressFactor defaults to 1.)
1577    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1578      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1579    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1580      on CS-grid: no longer loosing mass.
1581    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1582    o pkg/ggl90: fix sloppy output and fix a bug
1583    o pkg/seaice: added SEAICEuseEVPpickup parameter
1584      - Set to false in order to start EVP solver with
1585        non-EVP pickup files when using SEAICEuseEVP
1586      - fix sign error in diffusion in seaice_calc_rhs
1587    
1588    checkpoint58h_post
1589    * Modifications for bottom topography control
1590      o replace hFacC by _hFacC at various places
1591      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1592      o add non-self-adjoint cg2d_nsa
1593      o update autodiff support routines
1594      o re-initialise hfac after ctrl_depth_ini
1595      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1596    * Adding verification for 5x5 box (4-layer) bottom topography control
1597    
1598    checkpoint58g_post
1599    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1600       used for mean seasonal cycle, mean diurnal cycle); add an example
1601       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1602    o pkg/ggl90:
1603      - add parameter (minimum surface kinetic energy)
1604      - fix bug (avoiding division by zero)
1605    o couple pkg/thsice to pkg/seaice:
1606      - modify advection in seaice to accomodate new scalar fields to be advected
1607      - only muliDimAdection scheme work with seaice/thsice
1608      - mapping of thsice-variables to seaice-variables, back and forth
1609      - does not break the verification experiments, but does not give the
1610        desired results either
1611    o pkg/seaice
1612      - make (default) second order advection a bit less confusing?
1613    
1614    checkpoint58f_post
1615    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1616      to pkg/seaice):
1617      - new routines thsice_map_exf and thsice_get_exf provide the interface
1618      - add an additional formal parameter to thsice_solve4temp
1619    o pkg/exf:
1620      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1621      - correct Stefan-Boltzmann constant
1622      - new parameter for longwave surface emittance
1623      - separate some stuff from exf_bulkformulae into new routines  
1624        exf_radiation, exf_wind
1625      - add new parameters and constants: longwave emissivity for ocean, ice
1626        and snow, evaporation parameters over ice
1627      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1628        either wind from stress or stress from wind
1629    o pkg/thSIce:
1630    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1631    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1632       and THSICE_CALC_THICKN
1633    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1634    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1635      to make debugging easier.
1636    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1637    o pkg/bulk_force:
1638      - clean-up comments and parameters ;
1639      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1640    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1641      generate new output for test-experiment: aim.5l_cs.thSI
1642    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1643      testreport accordingly
1644    
1645    checkpoint58e_post
1646    o SEAICE_CGRID adjoint done
1647    o R_STAR adjoint implemented.
1648      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1649      * need to sort out init. of h0facc, etc.
1650    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1651      to be able to use it in pure forward.
1652    
1653    checkpoint58d_post
1654    o upgrade simple test-experiment to tutorial example:
1655     step.1: duplicate the experiment and (step.2) will remove the old copy.
1656      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1657      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1658      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1659      tutorial_global_oce_biogeo    <- copy of dic_example
1660      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1661      tutorial_plume_on_slope       <- copy of plume_on_slope
1662      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1663      tutorial_global_oce_optim     <- empty for now (David ?)
1664      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1665     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1666    o correct a sign problem in cost_scat.F
1667    o obcs and ptracers: fix boundary conditions for advections schemes
1668      with larger stencil
1669    o thsice adjoint: start
1670    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1671      completeness
1672    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1673      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1674    o ptracers adjoint:
1675      * avoid extensive recomputatations
1676      * fix missing re-init. of gptr (missed by TAF)
1677    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1678      me to turn off the excessive output to STDOUT that this package produces
1679    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1680      and add those terms in Vector-Invariant formulation.
1681    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1682      if the control period (xx_hfluxperiod etc) is 0
1683    o in profiles pkg, clean routines and fix details
1684    o in ecco pkg, reading ssh data:
1685      fix problem in case the model does not start at iter0=0
1686    o fix mnc-pickup/restart for ptracers
1687    o new package prifiles:
1688      code to compute profile-based cost by Gael Forget
1689      (modifs in ecco, ctrl, autodiff)
1690    o Benign bug fix in initialization (spotted by M. Mazloff) of
1691      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1692    
1693    checkpoint58c_post
1694    o adjoint: finish NLFS adjoint and provide reference output in
1695      verification/global_ocean.90x40x15/results_ad_nlfs
1696    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1697      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1698      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1699      with SEAICE_CGRID defined.
1700    o move calendarDumps from "data" to "data.cal" and clean-up the code
1701      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1702    o add useEXF & useCAL flags (for now, set in hard-coded way)
1703    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1704      (were missing in NH mode, and wrong in quasihydrostatic mode).
1705      waiting for Chris updated version of calc_gw to add those CALLs.
1706    o fix bug in quasihydrostatic S/R ;
1707      add a test for this option: global_ocean.90x40x15.qshyd
1708    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1709      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1710    o add on/off flag useOffLine for package OFFLINE
1711    o seaice:
1712      - modify advection so that it works also on the C-grid
1713      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1714        problem in multi-tile runs with C-grid
1715      - add flags for clipping ice velocities and/or masking solver forcing
1716      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1717        C-grid solver
1718      - added a few comments to seaice_diffusion.F
1719      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1720        are now exclusive)
1721      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1722        required re-ordering the code a little:
1723       + make DAIRN global variable (defined in SEAICE)
1724       + move computation of the viscosities eta and zeta into a new separate
1725         routine (because I need to recompute them in seaice_ocean_stress.F)
1726    
1727    checkpoint58b_post
1728    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1729      update output.txt of exp. aim.5l_cs.thSI
1730    o various mnc cleanups and improvements:
1731      + shrink lookup tables by factor of ~4
1732      + better error reporting when running out of lookup space
1733      + able to handle longer path/file names (up to 500 chars)
1734    o adjoint:
1735      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1736      - TBD: "hidden" mom_vecinv recomp. in dynamics
1737    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1738     (allow to differentiate between forcing components using new integer flags:
1739      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1740     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1741    o ecco
1742      - enable trend removal from SSH anomaly obs.
1743    o adjoint
1744      - a fix for PmEpR when #undef EXACT_CONSERV
1745      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1746      - try to fix "hidden" recomp. in forward_step for NLFS
1747        (NLFS seems broken sometimes after I checked it in)
1748    o seaice:
1749     - add c-grid version of the dynamic solver:
1750       + three new routines that are the c-grid substitute lsr, dynsolver
1751         and ostres
1752       + put a few fields that were local to dynsolver into global common
1753         blocks, so that I can move the computation of stresses etc into
1754         seaice_lsr (saves coding but may break the adjoint).
1755     - replace more hardwired parameters by runtime parameters
1756     - add ice masks that mask the rhs of the implicit solvers where there
1757       is no ice (commented out in seaice_dynsolver, because i am not sure
1758       if this works properly), eventually this should replace the clipping
1759       of ice velocities in seaice_dynsolver to +/-40cm/s.
1760    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1761      include it only where its needed
1762    o move balancing of fluxes before the call of external_forcing_surf
1763    o seaice:
1764      - correct units of turning angles (now they are really in degrees)
1765      - move computation of GWATX/Y out of main routine into dynsolver
1766      - initialize GWATX/Y in seaice_init
1767    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1768      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1769    o seaice: add runtime flags for turning angles (default to zero)
1770    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1771      and trend from exf forcing and ctrl control adjustments
1772    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1773      (since checkpoint57x_post)
1774    o change the default rotation period to 86164.s = the Earth rotation
1775    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1776      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1777    o seaice advection: add code for choosing between the default (2nd order
1778      central differences) and multiDim advection schemes provided by
1779      pkg/generic_advdiff
1780    o seaice:
1781      - removed all references to SEAICE_GRID.h fields from
1782        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1783        (cubed-sphere configuration will change a little)
1784      - grid computations in seaice_init are obsolete now.
1785      - cleaned up code a little so that is easier to read (hopefully).
1786      - added new (better?) discretizations of default advection and diffusion
1787        (turn on with SEAICEuseFluxForm)
1788      - replace 1 in 3d global fields by kSurface in growth.F
1789      
1790    checkpoint58a_post
1791    o seaice:
1792      - bug fix in advect.F
1793    o shelfice:
1794      - separate shelfice load anomaly from pload (breaks with time
1795        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1796        Its default is 0., but it may be computed more cleverly from (unknown)
1797        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1798        done offline. A good approximation of the pressure load anomaly is
1799        necessary to avoid large initial adjustment processes underneath
1800        deep-reaching shelfice.
1801      - small fix in ISOMIP shelfice_thermodynamics
1802      - add more sophisticated thermodynamics of Hellmer (1989), this is
1803        now the default
1804      - give a few constants more intuitive names
1805    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1806      if bulk formulae are used in long integration (especially EmPmR). Turn
1807      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1808      if balancePrintMean, the imbalance that is substracted is printed to
1809      STDOUT.
1810    o fix bug (typo) in obcs_apply_eta.F
1811    o add a new package shelfice which enables us to model the circulation
1812      underneath shelf-ice with draughts of hundreds of meters.
1813     - works
1814     - to do: + include improved thermodynamics
1815              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1816                instead of new field kTopC
1817              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1818                instead of new field R_shelfIce and new code in ini_depth.F
1819                and ini_mask_etc.F?
1820              + adjust vertical mixing schemes?
1821    o seaice pkg:
1822     - add a cpp-flag to include a simple formula for a salinity dependent
1823       freezing point of sea water at the surface
1824     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1825       meridional stresses are now different (and hopefully correct)
1826    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1827       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1828       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1829    o pkg/diagnostics: add options and parameters for regional-statistics
1830       diagnostics ; define regions by reading a region-mask from a file
1831       (might add other options later)
1832    o pkg/bulk_force:
1833     - add option and parameters to use AIM surface-flux formulae.
1834     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1835       others forcing fields (defined in PARM05, parameter file "data") are loaded
1836       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1837     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1838     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1839     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1840       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1841     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1842    
1843    checkpoint58
1844    o add "--embed-source" option to genmake2 which, when the supporting
1845      tools can be compiled (as determined by genmake2) will turn on the
1846      embed_files package which then embeds the entire MITgcm source code
1847      (*.[fFhc] + Makefile) used for the build within the executable
1848      - requested by CNH but off by default
1849      - adds a paltry <9MB to the mitgcmuv executable in most cases
1850      - only writes the output when useEMBEDSRC in eedata is true
1851    o clean up 3-dim. relaxation codes:
1852      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1853      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1854      * Thanks to Tom Haine for testing!
1855    
1856    checkpoint57z_post
1857    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1858      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1859    o fix the pickup behavior for obcs in combination with ptracers
1860    o fix a bug in ptracers_external_fields_load
1861    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1862      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1863    o transfered surface NH pressure to eta field (if exactConserv).
1864    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1865         and update lab_sea output.txt file.
1866    o completing 3-dim. relaxation code: additional term
1867         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1868      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1869      * At compile time, in "EXF_OPTIONS.h" set
1870          #define  ALLOW_CLIMTEMP_RELAXATION
1871          #define  ALLOW_CLIMSALT_RELAXATION
1872      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1873          tauThetaClimRelax3Dim = 15552000.0,
1874          tauSaltClimRelax3Dim  = 15552000.0,
1875      * 3 cases:
1876          1) Use a constant-in-time 3-dim. field
1877          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1878          3) Real-time relax. to time-evolving prescribed field
1879    o Adding Laplacian-type smoothness constraint on
1880      initial and boundary (forcing) controls (ic, bc)
1881      * enable at compile-time via
1882        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1883      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1884      * Absolute scale somewhat unclear so far
1885      * no area weighting was included since no other cost term does so far
1886    
1887    checkpoint57y_post
1888    First step for a NLFS adjoint
1889    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1890    o new init. routines for calc_r_star, calc_surf_dr
1891    o still need to deal with ini_masks_etc
1892    o testreport seemed happy
1893    checkpoint57y_pre
1894    
1895    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1896    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1897    o add new offset feature to offline pkg (plus minor cleanup)
1898    o cfc fixes for final year of integration
1899    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1900      be in GCHEM_OPTIONS).
1901    
1902    checkpoint57x_post
1903    o fix testreport Pb in multiple test experiment.
1904    o cleanup our namelist syntax in verification:
1905      - make it more F95 standards compliant (some work still needed)
1906      - allows the vast majority of our tests to work with gfortran
1907    o Non-Hydrostatic:
1908     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1909     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1910    o Allow to apply AB on T,S rather than on AB(gT,gS):
1911     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1912     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1913       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1914     - need a "clever" read_pickup to restart from the other AB formulation
1915    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1916    o remove some unused variables (reduces number of compiler warnings)
1917    o adjoint
1918      * Disable useVariableViscosity for adjoint for time being
1919        (there are a number of extensive recomputations)
1920      * Initialize certain variables needed for adjoint
1921    
1922    checkpoint57w_post
1923    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1924                 fix the singleCpuIO RS version of MDSWRITEFIELD
1925       and add a WARNING if using globalFiles=T with multi-processors.
1926    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1927      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1928    o tracer advection scheme:
1929      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1930       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1931       was not very convenient).
1932      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1933       (further tests needed for the implicit DST & Flux-Limiter schemes).
1934    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1935      and sRef for convenience, handy, when you want to initialize
1936      ptracers in a large domain with a constant non-zero value. Also,
1937      untangle ptracers_init.F a little.
1938    
1939    checkpoint57v_post
1940    o change dome exp. to use variable viscosity in side-drag terms.
1941    o remove all the files from the cfc_offline test since they are now
1942      incorporated into tutorial_cfc_offline which has been producing
1943      identical results for a few days of testing
1944    o add new parameter: sideDragFactor to enable half-slip-side BC
1945      and change side-drag S/R to use viscosity from mom_calc_visc
1946      (can switch back by setting sideDragFactor=0.); affects results at
1947      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1948       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1949    o vorticity & strain are now computed without masking, to account for
1950      no-slip-side BC in variable viscosity calculation ; mask is applied
1951      anyway later on, before computing advection/coriolis terms.
1952    o modify exp4 to test new obcs support for reading from external files
1953      and for passive tracers
1954    o fix behavior of ptracers_monitor when monitor output is written to a
1955      netcdf-file; still not independent of monitor.F (writes in the same
1956      file).
1957    o change default value of tRef (put a uniform, meaningful value for ocean
1958      & atmos) and initialize sRef (was missing, as Martin mentioned).
1959    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1960      to be proportional to enstrophy dissipation length.  Thus,
1961       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1962      This is now consistent with Smagorinsky and with the manual.
1963    
1964    checkpoint57u_post
1965    o OBCS and PTRACERS: add open boundary support for passive tracers
1966      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1967        OB-values from file; this is not different from the way theta and salinity
1968        are treated
1969      - however, Orlanski-radiation conditions are not supported, and the model
1970        will stop if you use pTracers and Orlanski at the same time.
1971      - beefed up the rountine obcs_external_fields_load: now only those open
1972        boundary values are overwritten with values from files for which there
1973        are really files, otherwise the OB-fields remain untouched. This makes
1974        it possible to use different OBs at different ends of the domain (as
1975        with EXF)
1976    o reduce number of exch calls in shap_filt (s2).
1977    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1978      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1979    
1980    checkpoint57t_post
1981    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1982    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1983      same truncation, independent of the face number: affects affects several
1984      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1985    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1986      note that biharmonic viscosity + no-slip was not tested in any experiment.
1987    o fix bug in non-linear free-surf side-drag ; generate new output for
1988      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1989    o make mnc honor the writeBinaryPrec flag for most kinds of output
1990    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1991    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1992      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1993    o add brackets in multi-terms sum to get same truncation, independent of
1994      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1995      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1996    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1997      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1998      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1999      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
2000      Suggested values of viscosity parameters found in mom_calc_visc.
2001      Many new viscosity diagnostics available.
2002    
2003    checkpoint57s_post
2004    o Add clearing-house for viscosity calculations, mom_calc_visc and
2005      correct numerous bugs in LeithD and Smagorinsky discretizations.  
2006      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
2007      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
2008      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
2009      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
2010      The Strain-Tension form is now called with useStrainTensonVisc=.true.
2011      ViscAhStrain and viscAhTension are now retired.
2012    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
2013    o In response to JMC's bug report, genmake2 now ignores any soft-links
2014      that it finds in the *current* directory when searching for files.
2015      Soft-links found in any other source directories will still work as
2016      they did before.
2017    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
2018      a C routine to unlimit the stack size
2019    o mnc-ify pkg/aim snapshot vars
2020    o mnc-ify pkg/land as requested by Daniel
2021    o various changes to mnc including:
2022      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
2023      - output can now be grouped so that all files within a group
2024          change the ITER portion of their names in lock-step together
2025      - can now read ("global") PER-FACE (in addition to PER-TILE) files
2026          and works with both EXCH1 and EXCH2 (but needs more testing)
2027      - writing works for all verification test cases w/ g77 on Linux
2028    
2029    checkpoint57r_post
2030    o make MNC variable initialization happen earlier
2031    o add diagnostics for (almost) each term of the momentum Eq.
2032    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
2033    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
2034    o remove MINIMAL_TAVE_OUTPUT option ;
2035      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
2036    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
2037      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
2038    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
2039    o add time-dependent SST, SSS control
2040    o cost terms in ecco/ modularized (new cost_generic.F)
2041    o cost_averages routines are modularized (new cost_averagesgeneric.F)
2042    o new infrastructure for seaice model vs. obs misfits in seaice/
2043      * driver from the_main_loop.F is seaice_cost_driver.F
2044      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
2045      * gradient check in Exp. 6a of natl_box_adjoint/
2046    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
2047      (see README file)
2048    
2049    checkpoint57q_post
2050    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
2051    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
2052      - bug was reported by Jean-Michel and Ian Fenty
2053    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
2054      update exp. cpl_aim+ocn output.
2055    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
2056      Needed for high-res. runs with large global files
2057      to be able to limit tapelev size
2058    o Changed some tests for adjoint:
2059      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
2060      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
2061      * global_ocean.90x40x15/ back to default 3-level checkpointing
2062    o Modifications to enable scripted COMMON to MODULE conversion
2063      * verification/OpenAD/code/ has necessary scripts and description;
2064      * converts, compiles and runs successfully;
2065    
2066    checkpoint57p_post
2067    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
2068    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
2069      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
2070    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
2071    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
2072      (was already the case for dissipation with mom_vecinv,
2073       and also the case for grad.PhiHyd when staggered-timeStep)
2074      This will allow to put dissipation out-off the AB time-stepping.
2075     Unfortunately, affects truncation error. Update output of exp. that "fails"
2076      (cg2d matching number) and leave the others for later: front_relax(10),
2077      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
2078      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
2079    
2080    checkpoint57o_post
2081    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
2082      (2) its ready to be documented during the 20050801 DocFest
2083    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
2084      for ideal_2D_oce and lab_sea on linux_ia32_g77
2085    o set to #undef CTRL_SET_OLD_MAXCVARS_30
2086      in global1x1_tot/code_seaice_adj to access indices 32, 33
2087      (worth another tag)
2088    
2089    checkpoint57n_post
2090    o adding precip control xx_precip 32
2091    o adding swflux control xx_swflux 33
2092    o Replacing 10 forcing penalty cost routines by 1 generic.
2093    o Implementing partitioning in time-mean and variable adjustment
2094      for atmos. state.
2095    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
2096    o in natl_box_adjoint:
2097      * updated exp 1 to 10
2098        (but does not have time-mean vs. variable split results yet)
2099    o updated global1x1/*_seaice_adj/
2100      to incorporate latest changes
2101    o enable useSingleCpuIO for mdsio vector routines
2102      (applies in particular to tapelev I/O)
2103    o removed inefficient K-loop in all active_file*control*.F
2104    
2105    checkpoint57m_post
2106    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
2107      and advect_cs (use EXCH-2 and standard cs-32 grid files).
2108    o pkg/exch2: filling of face-corner halo regions is optional
2109      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
2110    
2111    checkpoint57l_post
2112     tag before updating tutorials (pre-release-2)
2113    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
2114       for output and interpolation of input fields onto model grid)
2115    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
2116       Affects results of exp. rotating_tank ; update output.txt.
2117    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
2118          and taking the square quantity and/or using a fraction-weight field.
2119    o fix aim_diagnostics_init.F mate numbers.
2120    o add mnc output capability to diagnostics/diagstat and update
2121      our cvsignore files for the ACSII output generated
2122    
2123    checkpoint57k_post
2124    o lab_sea now uses diagnostics package and provides a suite of
2125      new EXF diagnostics output.
2126    
2127    checkpoint57j_post
2128    o exf
2129      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
2130        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
2131        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
2132      * extended diagnostics output
2133        - now includes all EXF variables
2134        - hs, hl moved to common block
2135        - separate S/R for diagnostics, called after ctrl vector is added
2136        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
2137        - EXFqnet contains true Qnet (i.e. includes qsw)
2138      * updated verif. lab_sea, global_with_exf
2139      * Rearranging hflux (exf_mapfields -> exf_getforcing)
2140        to ensure that diagnostics sees a true EXFqnet
2141    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
2142    o diagnostics pkg: change pointers so that 1 diagnostic can be used
2143      several times with different frequencies.
2144    o mnc-ify the thsice package as requested by Daniel Enderton
2145      - the monitor--MNC output needs work
2146      - many attributes need to be added (most are currently blank)
2147    o mnc-ify theaim_v23 package as requested by Daniel Enderton
2148      - many attributes need to be added (most are currently blank)
2149    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
2150    o add Sadourny like discretization to the 4th.O vorticity advection scheme
2151    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
2152      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
2153         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
2154    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
2155     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
2156    
2157    checkpoint57i_post
2158    o Diagnostics package was changed: diagnostic allocation is now deactivated
2159      by setting an empty file name in the namelist (used to be by setting 0 frequency)
2160    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
2161      add 1rst Order upwind vertical Shear.
2162    o add a quick fix for A/B checkpointing in OFFLINE mode
2163    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
2164      end-run around the C/Fortran linking horror in eesup/src/timers.F
2165    o added pkg/runclock: allows user to terminate run based on wall clock
2166    o added non-hydrostatic scaling parameter: nh_am2
2167    o pkg/my82: futile attempt to make results compiler-independent by adding
2168      some "_d 0", etc. no effect.
2169    o for mnc output, fill the 'T' coordinate var with myTime and create a
2170      separate 'iter' variable for iteration count
2171    o pkg/diagnostics:
2172      add new capability: output of Global/Regional & per-level statistics ;
2173      tested against monitor output (including land & thSIce) on various exp.
2174    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
2175    
2176    checkpoint57h_done
2177      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
2178      data.diagnostics, data.gchem, data.ptracers) is done.
2179    
2180    o pkg/diagnostics: prepare for Global/Regional statistics.
2181      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
2182    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
2183      and rename it: DIFFERENT_MULTIPLE
2184    
2185    checkpoint57h_post
2186    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
2187    o pkg/diagnostics: change output frequency, now in seconds (instead
2188      of Nb of iterations). This requires to change data.diagnostics.
2189    checkpoint57h_pre
2190    
2191    o in mnc, let the user create the output dir if both mnc_outdir_date
2192      and mnc_outdir_num are false
2193    o add fflags() to pkg/diagnostics which allows one to specify, on a
2194      per-file basis, the file precision [default behavior is unchanged]
2195    o added diagnostics to pkg/kpp, including computation of mixed layer
2196      depth based on a temperature/density criterion
2197    o updated verification/natl_box to test the new pkg/kpp diagnostics
2198    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
2199    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
2200    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
2201      not mnc -- this mistake was found by JMC and is now corrected
2202    
2203    checkpoint57g_post
2204    o add Adams-Bashforth 3rd Order time stepping:
2205      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
2206      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
2207    checkpoint57g_pre
2208    
2209    o make lambda[Theta,Salt]ClimRelax spatially varying
2210      (default remains spatially uniform constant based on tau)
2211    o added new control variables
2212      * init. uVel, vVel, etanN
2213      * lambda[Theta,Salt]ClimRelax
2214    o separate masks used for ctrl_pack/unpack 'from write_grid' output
2215      (suggested by G. Forget)
2216    
2217    checkpoint57f_post
2218    o add parameter "baseTime" = model base time = time at iteration zero
2219      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
2220      account for baseTime shift
2221    o move Coriolis arrays from PARAMS.h to GRID.h
2222    checkpoint57f_pre
2223    
2224    o mnc-ifying the seaice package
2225    o introduced an alternative length scale calculation for use in the limiting
2226      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
2227    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
2228    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
2229      as well as grad(vort3).  Made it compatible with both approximate form
2230      for the cubed sphere and full form of these gradients.  Added flag
2231      useFullLeith to select between approximate and full form.  
2232    o add "d0" in getcon.F to reduce differences between compilers/platforms
2233      update output.txt of exp. fizhi-gridalt-hs
2234    o change port_rand funtion to allow to set the seed.
2235    o fix obscure MNC bug involving conversion between reals and integers
2236      - it caused no problems with certain (eg. gcc, ifc) compilers but the
2237        new version is now more standards-compliant
2238    o adjoint-related modifications
2239      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
2240      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
2241      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
2242    
2243    checkpoint57e_post
2244    o Adding eddy stress controls a la Ferreira et al.
2245    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
2246    
2247    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
2248      update output.txt of exp. fizhi-gridalt-hs
2249    o add more "Z" dimensions and associated coordinate vars to MNC
2250    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
2251    o parameter calendarDumps: when set, approximate months (30-31 days) and years
2252      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
2253      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
2254      months and years.  Requires pkg/cal.
2255    o diagnostics: add pickup functionality
2256      - off by default for backwards compatibility
2257      - current version only uses MDSIO -- MNC will be added
2258    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
2259    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
2260    
2261    checkpoint57d_post
2262    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
2263    o modify verification/ideal_2D_oce so that it tests the creation of mnc
2264      output from the diagnostics package
2265    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
2266    o make genmake2 more portable by using ".$FS" instead of ".f" for more
2267      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
2268    o add coordinate variables to the MNC output from the diagnostics package
2269    o change MNC-flags default value: true when useMNC=TRUE
2270    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
2271      the ability (off by default) to read the grid information using MNC
2272    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
2273    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
2274    o do snap-shot diagnostics at the middle of the time-interval (instead of
2275      at the end).
2276    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
2277      new test for AIM with thSIce + slab-ocean
2278    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
2279    o move state variable diagnostics to the beginning of the time step ;
2280      (note: still needs some work specially for snap-shot diagnostics)
2281      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
2282    
2283    checkpoint57c_post
2284    o Change testing option (-ieee) to get closer agreement between g77 & ifort
2285    o generate new output.txt files on faulks with g77 & the new -ieee option
2286    checkpoint57c_pre
2287    
2288    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
2289      update output.txt of exp. global_ocean.90x40x15
2290    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
2291      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
2292    o add saltFlux(+File) forcing capability with periodicExternalForcing
2293    o allow to use pkg diagnostics for GM-Redi & ThSIce output
2294    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
2295    o improvements for the MNC output from DIAGNOSTICS:
2296      - correct handling of the unlimitied dimension
2297      - all dims now have associated coordinate variables
2298      - variables located at U, V, and Corner ("Z") points are now written
2299        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
2300        *all* data points are output
2301    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
2302    o added pkg/seaice/seaice_monitor.F
2303    o mdsio_readfield.F can now read files visible only to master MPI process.
2304    o pkg/seaice: some test code for ice-modified ocean stress
2305    o exf_getffields interpolation defaults to bilinear for all scalar forcing
2306      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
2307      spurious negative numbers for precipitation and humidity.  Will cause
2308      some small numerical differences for integrations using pkg/exf/exf_interp.F.
2309    o pkg/ctrl/
2310      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
2311        May be enabled via doPackDiag
2312      *  introduce z-scaling of
2313         + gradient (doZscalePack) and
2314         + control (doZscaleUnpack)
2315    o pkg/mdsio/
2316      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
2317      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
2318    
2319    checkpoint57b_post
2320    o simplify options in diagnostics_fill arguments (remove weird combinations)
2321    o fix MNC coordinate variables so that they now contain per-face index
2322      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
2323      general, EXCH2 grids are only aligned to a "local" coordinate system
2324    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
2325    o Implement instantaneous output within pkg diagnostics:
2326      setting a negative frequency in data.diagnostics produces
2327     "snap-shot" output (as opposed to time-average if freq > 0)
2328    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
2329      NOTE: change ptracer diagnostics name: use 2 characters to work with
2330            more than 9 tracers. Add also diagnostics of advect & diffus flux.
2331    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
2332      becomes the coordinate variable for the 'T' dimension
2333    o add CF-style coordinate variables to MNC
2334      - just a first cut:  numbers are meaningless on the cubesphere and
2335        missing along the T axis but otherwise it works!
2336    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
2337    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
2338    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
2339      this is based directly on what the model compute, so that the content of
2340      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
2341    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
2342    o clean up build options files for SunOS, in particular
2343      - remove -traditional from xmakedepend
2344      - change -xarch=v9 to -xarch=native for f77
2345      - restore use of make (not gmake)
2346      - add CC=gcc if using g77
2347    o changes per discussion of AM, JMC, & EH3 today:
2348      - move redundant "grid" variables out of "state" -- in preparation of
2349        creating proper CF-style coordinate variables and in recognition
2350        that any/all grid variables can be easily copied (eg. w/NCO) from
2351        the grid files into any of the other NetCDF files
2352      - *always* output grid variables with MDSIO (this will eventually be
2353        changed)
2354      - output MNC grid file if useMNC is true
2355    o every instance of _END_MASTER() has been found and replaced with
2356      _END_MASTER( myThid ) in order to satisfy certain picky Sun
2357      preprocessors
2358    o re-arrange diagnostics pkg initialisation:
2359     - allow each package to extend the available diagnostics list
2360     - add some checking and fix small problems (multi-threaded, ...)
2361     - new S/R diagnostics_fill (replace fill_diagnostics):
2362       look through the short list of active diag. (instead of the long list)
2363       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
2364    
2365    checkpoint57a_post
2366    o this set of changes restores TAMC compatibility
2367      tested for global_ocean.90x40x15 adjoint on trough
2368      (what a pain)
2369    
2370    checkpoint57a_pre
2371    o some modifs in tools/build_options for sunos
2372    o call ctrl_pack for ctrl at end for optimcycle=0
2373    
2374    checkpoint57
2375    o add horizontal bi-harmonic viscosity for vertical velocity
2376      - new parameter viscA4W (defaults to viscA4)
2377      - affects only non-hydrostatic code
2378      - to be done: no-slip lateral boundary conditions
2379    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
2380    o implement Implicit Vertical advection for pTracers
2381    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
2382      (implemented also for implicit vertical diffusion & advection)
2383    o OBCS: extend application of tracer open boundary conditions
2384      to a strip beyond the boundary of width Olx/Oly
2385    o add call monitor to TAF set of required calls (flow directives)
2386      and include in natl_box_adjoint
2387    o untangle a few ifdefs related to cost, ctrl, autodiff
2388      untangel a few ALLOW_ECCO_OPTIMIZATION
2389    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
2390      (theta2, salt2 in ecco_cost_weights)
2391    
2392    checkpoint56c_post
2393    o OBCS as control variables
2394      - update ctrl_ad_diff.list, obcs_ad_diff.list
2395      - remove balance of obcs controls from default
2396      - fix index bug nobcs in ctrl_init
2397      - fix dummy fields filen in ctrl_pack
2398      - add dummy weights for obcs
2399    o lsopt: comment out fort.94 output
2400    o optim:
2401      - remove unnecessary header files
2402      - adjusted namelists
2403      - add xerbla.F to Makefile
2404    o exf:
2405      - multiple modifications of exf_check_range
2406      - unit change in exf_init_runoff from [m/year] to [m/s]
2407    o mdsio:
2408      - i/o-vector change debugLevel from debLevA to debLevB
2409    
2410    checkpoint56b_post
2411    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
2412      is called from DO_THE_MODEL_IO
2413      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
2414      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
2415      - clean up PTRACERS_WRITE_TIMEAVE a little
2416    o add another verification experiment that tests both the cfc-pkg and
2417      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
2418      reactive tendencies treated inline with regular timestepping
2419    o testreport previously did a lousy job of comparing small numbers, so
2420      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
2421      implemented in the little c-progam tmp_cmpnum.c which is embedded in
2422      testreport.
2423    o ptracers_monitor: bug fix for MPI
2424    
2425    checkpoint56a_post
2426    o GCHEM: finish reorganizating the package
2427      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
2428        (introduces another 3D-array for each passive tracer, but only if
2429        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
2430        gchemTendency is not needed because the timestep is done separately)
2431      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
2432      - GCHEM is now---more or less cleanly---separate from PTRACERS
2433      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
2434        so clear to me how that should be done in a general way.
2435    o CFC: improve formatting of output in CFC_ATMOS
2436    o PTRACERS:
2437      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
2438        that ALL experiments with ptracers enable can be checked. This makes
2439        GCHEM_MONITOR obsolete.
2440      - include a runtime parameter PTRACERS_monitorFreq that defaults to
2441        monitorFreq
2442      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
2443    o add PTRACERS (PTR0[1-5]) to testreport output
2444    o exf_check_range:
2445      * default changed to .TRUE.
2446      * will check values for niter0 if debLevA, every timestep if debLevB
2447      * STOP in exf_check_range if 'out of range'
2448      * range chosen generous to allow for potential extema
2449      TBD: a version with stricter range
2450           permitted range would be runtime parameters
2451    o GMredi:
2452      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
2453      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
2454      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
2455    o GCHEM:
2456      - move call to GCHEM_FORCING_SEP, so that it is now called before
2457        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
2458      - introduced a useGCHEM runtime flag and applied it everywhere.
2459      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
2460        this flag is now only visible within GCHEM-pkg routines.
2461      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
2462        be replaced by a 3D array that is computed before thermodynamics; for
2463        this, the tracer ID iTracer had to be included into the parameter list
2464        of ptracers_forcing
2465      - set up forward_step to call gchem_forcing, that will replace
2466        gchem_forcing_int in ptracers_forcing
2467      - cleaning up
2468    o small cleaning of exch2: remove files that are also in eesupp/src
2469    
2470    checkpoint56
2471    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
2472    o mnc: cleanup "full" files--fixes out-of-memory problem
2473    o ECCO-GODAE
2474      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
2475      * fully merged and updated from SIO code
2476        windstress sign change affects
2477        - exf_inscal_[u/v]stress
2478        - sign of xx_tau[u/v] adjustments
2479        - signs in cost_scat
2480      * ctrl_get_gen: avoid update of tau[u/v] for first few days
2481      * natl_box_adjoint updated and compressed
2482      * 2-level checkpoint switch added
2483        (tested in EXP. 1 of natl_box_adjoint)
2484      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
2485    o SVD
2486      * first complete, non-hacked version for SVD calculations
2487      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
2488        performed via direct access files admtlm_vector.it????
2489        (via ctrl_[un]pack)
2490      * optimcycle is used for ARPACK iteration counter
2491        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
2492      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
2493        and add linear transforms where necessary
2494      * controls are initial/final SST, SSS (can be extended; need to check
2495        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
2496    o mdsio: filename info to both stderr, stdout
2497    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
2498      from sign change
2499    
2500    checkpoint55j_post
2501    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
2502      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2503    o add consistent build directories and .cvsignore files to verification
2504    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
2505    o make all subroutines 30 or less characters in length for certain older
2506      compilers to work (a thorough search only turns up two routines in
2507      pkg/ptracers)
2508    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
2509      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2510    
2511    checkpoint55i_post
2512    o change arrays for total vertical diffusivity (2.D if explicit,
2513      3.D if implicit) ; each ptracer uses its own background value.
2514    o added mnc/NetCDF output capability to ocn_compon_interf
2515      - added bits to verification/cpl_aim+ocn so that it can run on
2516        ITRDA and other clusters without the mpirun "-wd" option
2517    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
2518      configuration
2519    o give MNC the ability to create additional files rather than
2520      exceeding a specified file size limit "MNC_MAX_FILESIZE"
2521      - the default is just less than 2GB which is a practical limit
2522        on many systems
2523    o Compute the non-local term using either KPP vertical diffusivity (=default)
2524       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
2525    
2526    checkpoint55h_post
2527    o add verification test "vermix"
2528    o remove all the *_ioinc flags and replace with the single global
2529      outputTypesInclusive flag
2530    o allow to set a vertical profile of vertical diffusivity for T & S
2531    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
2532    o useMNC moved from data.mnc to data.pkg
2533    
2534    checkpoint55g_post
2535    o Renaming carbon AD experiments to comply with testreport conventions
2536    o Updating adjoint of Held-Suarez hs94.1x64x5
2537    o Fixing directives for non-ECCO forward_step, after ECCO directives
2538      have been fixed to avoid recomp. of do_oceanic_phys
2539      Works well for global_ocean.90x40x15,
2540      but recomp. issue remains for carbon
2541    o Updating adjoint output for natl_box_adjoint after
2542      pkg/ecco has been modified (see taga c55d_post)
2543    
2544    checkpoint55f_post
2545    o rename to timeave_init_fixed
2546    
2547    checkpoint55e_post
2548    o some delicate re-shuffle of store directives to avoid one
2549      extra call of do_oceanic_physics
2550      affects ecco_the_main_loop.F, do_oceanic_physics.F
2551      checkpoint_lev1_directives.h
2552    o NB: this may break global_ocean adjoint temporarily,
2553      but it is clear how to fix it. Will do later, need this now.
2554    
2555    checkpoint55d_post
2556    o ECCO specific cost function terms (up-to-date with 1x1 runs)
2557    o ecco_cost_weights is modified to 1x1 runs
2558    o modifs to allow observations to be read in as
2559      single file or yearly files
2560    o enable to read exf forcing fields as either
2561      single file or yearly files (flag useExfYearlyFields)
2562    checkpoint55d_pre
2563    
2564    o switch between 2-level and 3-level checkpointing
2565    o add ability of MNC to write local and "partial" (eg. 2D slices where
2566      the full 3D field is never actually stored) arrays to NetCDF files
2567      with the correct (that is, the complete multi-dimensional) set of
2568      array indicies
2569      - used in mom_vecinv() to write the diagFreq output
2570      - tested (demonstrated) in verification/aim.5l_cs
2571    o further mnc-ification
2572      - add verification/lab_sea to the list with mnc setups
2573      - fix undefined mnc v-names in cd_code
2574      - add kpp to mnc output (both snapshot and timeave)
2575    o non-hydrostatic code
2576      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
2577        in calc_gw.F
2578      - defaults to viscAh
2579      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
2580        friction or Leith) in non-hydrostatic mode, as long as there is
2581        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
2582    o pkg/cost
2583      extend simple cost functions to treat time mean quantities
2584      (T,U,V) via cost_accumulate_state from cost_tile
2585    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
2586        be 2 times larger than the minimum size the advection scheme requires.
2587        now get a perfect conservation of salt in advect_cs test-exp (updated)
2588    o GGL90 (Gaspar's TKE mixed layer)
2589      - add horizontal diffusion of TKE, requires exchanges in
2590        do_fields_blocking_exchanges, horizontal diffusivity is zero by
2591        default. In OPA there is no horizontal diffusion of TKE but the
2592        mixing coefficients are computed from a horizontal average of TKE of
2593        6 points or so. I think that diffusion has a little more physical
2594        justification.
2595      - clean up ggl90_calc in the hope of reducing memory usage (this hope
2596        was in vain)
2597      - mask tke-variable in ggl90_init
2598    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
2599    o fix biharmonic diffusion on CS-grid.
2600    o more obcs stuff
2601      - added obcs_external_fields_load as an alternative to the EXF-pkg option
2602        for reading boundary values. This routine is called from
2603        obcs_prescribe_read
2604      - updated obcs_check
2605      - changed sponge layer relaxation parameter units for days to seconds
2606      - turned off sponge layer by default
2607      - changed argument list of OBCS_CALC to myTime+deltaTclock
2608      - fixed about 35 bugs in obcs_external_fields_load
2609    
2610    checkpoint55c_post
2611    o obcs stuff
2612      - new runtime flags useOBCSprescribe, useOBCSbalance
2613      - re-arranged obcs_calc
2614      - moved exf_getobcs to obcs_prescibe_read
2615        obcs_prescibe_read is called after ORLANSKI stuff
2616        and independent of it (executable can contain all).
2617      - updated obcs_check
2618      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
2619        These may be necessary only if tangential velocities are
2620        prescribed at OB, not sure, needs testing.
2621    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
2622      which simplifies the calls and passes the ifc check-bounds test
2623    
2624    checkpoint55b_post
2625    o add a 2D scalar, Z location, exchange_2 routine.
2626    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
2627      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
2628      affects advect_cs results (for the wrong reason): update output.txt
2629    o use a more standard discretization for biharmonic viscosity ;
2630     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
2631      affects results of dome set-up: update output.txt
2632    o fix gad_advection.F (CubedSphere part), back to version 1.23
2633    o fix bug in mom_vi_del2uv.F (CubedSphere part).
2634    
2635    checkpoint55a_post
2636    o merged code to
2637      * prescribe/read time-dependent open boundaries
2638        (works in conjunction with exf, cal)
2639      * sponge layer code for open boundaries
2640      * each boundary N/S/E/W now has its own CPP option
2641        (healthy for the adjoint)
2642    
2643    checkpoint55
2644    o up-to-date adjoint of previous breaks
2645      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
2646      - global_ocean_ebm: adjoint still needs fix (TLM ok)
2647      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
2648      - carbon: * remove tr1-related adjoint verification
2649                * add ptracer as control variable
2650    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
2651      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
2652    
2653    checkpoint54f_post
2654    o in verification/carbin/ remove experiment related to
2655      ALLOW_PASSIVE_TRACER (array tr1 etc)
2656      code_ad/ input_ad/ results_ad
2657    
2658    o add two new packages
2659      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
2660        + subject to optimization (memory)
2661      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
2662        + subject to reordering (many GOTOs in the original code)
2663        + so far opps is called for every (i,j) point, and then operates in
2664          the vertical; one may want to reorder the scheme in order operate in
2665          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
2666          fields)
2667    o overhaul of IO so that we now have flags for MDSIO and/or MNC
2668      - all verification tests compile and run with linux_ia32_g77
2669      - defaults are compatible with current input files--nothing
2670        should change if you were not previously using MNC
2671      - MNC output has been added in numerous places (eg. timeave)
2672        but there are still a few writes not yet do-able with MNC
2673        (this is in progress)
2674      - flags now allow for either/or/both use of MDSIO and MNC and
2675        documentation will soon follow
2676      - numerous small formatting cleanups for ProTeX
2677    o add version info (via BUILD_INFO.h) to MNC and stdout
2678    
2679    checkpoint54e_post
2680    o add two new packages
2681      - pp81 (Packanowski and Philander, 1981), Richardson number and
2682        stratification dependent mixing
2683      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2684      - these scheme operate in a similar manner as KPP (without ghat, of
2685        course), however there is only one diffusivity that is used for both
2686        temperature and salinity (and passive tracers)
2687  o add offline package  o add offline package
2688  o add "verification/dic_example" which contains a dic-gchem-ptracer setup  o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2689    provided by Stephanie Dutkiewicz    provided by Stephanie Dutkiewicz

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