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revision 1.84 by cnh, Thu Sep 5 21:06:14 2002 UTC revision 1.1154 by jmc, Tue Sep 1 20:45:26 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 pkg/mdsio (& pkg/rw): rework high level S/R interface:
8      To avoid mixing type (RS/RL) of input/output array argument,
9      replace single mixed-type array with a pair from each type (RS/RL).
10    o setting pickupSuff force to start from a pickup (even if nIter0=0): this
11      is now implemented for all pkgs (previously only done for the main pickup)
12    
13    checkpoint61u
14    o pkg/obcs:
15      - change OB?eta from _RS to _RL and put them into a separate commen block
16      - add code to read OB?eta from a file via obcs_prescribe_read: the code
17        compiles and does not destroy any other experiments, the data is read
18        properly, but the code is not tested in actual applications
19    o ini_mnc_vars.F: if available (ALLOW_CAL), use startTime_1 and 2 to
20      create a meaningful unit attribute for the time coordinate variable
21    o pkg/ebm: add plenty of missing "_d 0" ;
22       update results of experiment global_ocean_ebm (fwd + adjoint tests)
23      Notes: several pieces of code only works for (very) specific set up
24       (domain size, lat range, etc ...); should be documented & stop if one
25       of those assumptions is not meet.
26    o pkg/seaice: add missing "_d 0" in HSNOW initialisation
27       update results of experiments: lab_sea (3 fwd tests + 2 adjoint tests)
28          and offline_exf_seaice (seaicetd + adjoint).
29    o add missing "_d 0" in ShortWave flux penetration (S/R SWFRAC):
30       update results of experiments: lab_sea (4 fwd tests + 3 adjoint),
31        seaice_obcs, global_ocean.cs32x15 (icedyn & thsice) and natl_box (x2).
32    o few changes to pass when compiling with strick checking of arguments
33       across S/R (allow to find few bugs in S/R calls).
34    o pkg/seaice:
35     - seaice_evp: move if-statement out of loop (TEM) at the cost of 11 new
36       2d-fields, for slightly better performance
37    
38    checkpoint61t
39    o pkg/seaice:
40     - remove unused variables in seaice_evp
41     - reduce number of SQRT in seaice_evp and seaice_calc_viscosities
42    o eeset_parms.F, open_copy_data_file.F & ini_parms.F:
43       named file replacing SCRATCH files (for TARGET_BGL & TARGET_CRAYXT):
44       each processor opens a different file (a fix from Matt).
45    o cg2d:
46       use simple EXCH (overlap size = 1 and ignore corners), like in cg3d.F :
47       this reduces number of EXCH calls by 2 when using exch2.
48       For now, keep previous size array for gc2d_nsa.F to avoid Pb with store
49       directives and missing simple EXCH (exch_s3d_rx) adjoint code.
50    o pkg/thsice:
51       add code for Near Infra-Red albedo (from Jeff)
52       (turned on with run-time flag: thSIce_calc_albNIR, in data.ice).
53    o ini_model_io:
54       move (from packages_readparms.F & initialise_fixed.F) to ini_model_io.F
55       MNC & MONITOR initialisation calls; move MNC calls from {pkg}_readparms.F
56       to {pkg}_init_fixed.F for {pkg}= kpp, seaice & shelfice.
57    
58    checkpoint61s
59    o pkg/exch2 (exch2_rxN_cube*):
60       remove last BARRIER (no need to synchronise after getting data from shared
61       buffer (get) as long as any change to buffer (put,recv) is between BARRIER)
62    o change tiling of natl_box (from 2 to 4 tiles) to get it tested with MPI+MTH
63      and generate new output (for the 2 tests) using default rotationPeriod.
64    o pkg/exch2:
65      - always call exch2_*_cube, not exch-1 anymore, if useCubedSphereExchange=F
66        (was already the case with AUTODIFF_EXCH2 defined)
67      - add bj in exch2 arrays and S/R.
68      - can now use pkg/exch2 for regular (non CS) set-up; switch test experiment
69        MLAdjust to exch2 (identical results except with MPI -> truncation diff);
70    o add pkg/longstep for ptracer timestep a multiple of U/V/T/S timestep
71      - adds deltaT argument to the subroutines TIMESTEP_TRACER DWNSLP_APPLY
72        GAD_ADVECTION GAD_CALC_RHS GAD_IMPLICIT_R GAD_SOM_ADVECT
73      - verification experiment natl_box.longstep
74    o build_options: ifort+mpi_aces optfile (following Constantinos advise):
75      allow different versions of ifort (8 or 9) and different versions
76       of mpi (mpich or mpich2) to be used with the same optfile.
77      requires to load a netcdf module and set MPI_INC_DIR (see comments inside
78       optfile). Change testing scripts (example_scripts/ACESgrid) accordingly.
79    o pkg/seaice:
80      fix previous modif (3-level field removed) for old-pickup reading
81    
82    checkpoint61r
83    o pkg/seaice:
84     - clean up the 3-time levels of UICE,VICE,HEFF,AREA in three steps:
85      1. introduce fields for time step (N-1)
86      2. do not use levels 2 and 3 anymore (but keep them)
87      3. replace 3D versions of UICE,VICE,HEFF,AREA by 2D versions. This
88         includes changes to pkg/thsice/thsice_get_velocity.F,
89         model/src/external_forcing_surf.F, pkg/obcs/obcs_apply_seaice.F, and
90         pkg/obcs/obcs_apply_uvice.F.
91     - completely remove code for leap-frog time stepping for second order
92       advection
93     - adjusted adjoint accordingly;
94       gradient checks have improved by an order of magnitude!
95    
96    checkpoint61q
97    o pkg/seaice: fix bug in free slip boundary conditons for LSOR solver
98     - the boundary conditions along open boundaries are unclear, because the
99       associated masks are set to zero and are thus treated as closed when
100       applying the slip-boundary conditions.
101     - move initialisation of grid variables from seaice_init_varia to _fixed
102    o adding doc/diags_changes.txt
103    o model/src:
104      do_the_model_io: rename few pkg S/R which are called from do_the_model_io,
105       to avoid "_diags" naming if no relation to pkg/diagnostics.
106      ini_theta,ini_salt: fix (at least compile the code) reading from NetCDF
107       file and only call PLOT_FIELD_XYZ if debugMode=T.
108      remove few PLOT_FIELD_XY calls outside initialisation.
109      remove few unnecessary BARRIER.
110    o pkg/salt_plume: add SaltPlumeSouthernOcean to allow disabling
111      of salt_plume package in Southern Ocean
112    o pkg/thsice:
113     - fix hOceMxL in overlap (needed for sea-ice advection);
114       update output of experiment global_ocean.cs32x15.icedyn.
115    o pkg/seaice:
116     - make the (placeholder-)tracer IceAge a little more meaningful
117      by avoiding ridging of age due to convergent ice flow
118     - add diagnostics for surface temperature, atmospheric and oceanic
119       heat flux, and atmospheric and oceanic ice growth
120    
121    checkpoint61p
122    o eesupp (global_max & global_sum):
123     - add one more element to buffer (start at index 0) for GL_MAX/SUM output;
124     - remove starting & endding barrier (no longer needed)
125    o pkg/mdsio, writelocal:
126       works also in multi-threaded when LOCBIN_IO_THREAD_SAFE is undefined
127       (remove the STOP): uses shared buffer IO to store data from all threads
128       and then let master-thread write nThreads tiles.
129    o pkg/mdsio (read/write field):
130     - tiled IO done in 1 piece (all levels at a time);
131     - new header file "MDSIO_BUFF_3D.h" with 3-D buffers.
132     - multi-threaded: allow to read/write local (non-shared) array
133       (was already working with singleCpuIO ; now works also without);
134       => no longer needs barrier call after reading a file (added inside
135       mds_read/write field).
136     - move barrier calls outside gather/scatter_2d to mds_read/write_field
137    o pkg/obcs/exf
138      - exf_getffieldrec.F: add a few ". _d 0" and
139                            add code to catch the case fldperiod = 0.  
140      - obcs_precribe_read.F: change if statements so that they match
141                              the variable type (_RL)
142      - add a separate exf_iprec_obcs to exf_set_obcs (by default equal to
143        exf_iprec) as part of namelist EXF_NML_01
144    o pkg/mdsio:
145      - read/write tiled (local) files: read/write 1-level tile chunk at a time
146        (instead of segment of length sNx); expected to speed up tiled IO.
147    o pkg/exch2:
148      - take buffer copy from/to array out of S/R exch2_send/recv into new
149        S/R exch2_put/get ; Exch of local variable now works with MPI+MTH
150        (tested by removing commom block statement in SOLVE_FOR_PRESSURE.h).
151      - ad version of send/recv no longer needed (but needs exch2_ad_put/ad_get)
152      - simplify argument list of S/R exch2_get_uv_bounds and exch2_get_scal_bounds
153        (which replaces exch2_get_recv_bounds & exch2_get_send_bounds) by
154        including Topology header file (and common blocks).
155      - implement EXCH_IGNORE_CORNERS in scalar exchange (rx1);
156        remove 2nd exch call in exch2_s3d_rx (no longer needed).
157      - document S/R arg. list (+ update some comments)
158    o pkg/seaice:
159      - added SEAICE_CLIM_AIR code, which permits modulation of surface air
160        temperature and humidity over sea ice based on climatological values.
161      - clean up computation of Hibler+Bryan (1987) stress coupling for the case
162        of LSR (this change is expected to change the results slightly because now
163        it uses slightly difference moduli from the second last LSR solution, but
164        that is more consistent with the stress computations; this part of the code
165        is not tested in the verification experiments)
166      - fix diagnostics for flux of ice in case of B-grid
167      - turn strain rates eij and press into global fields within global
168        common block in SEAICE.h for more straighforward diagnostics
169      - fix diagnostics for principal stress components, press, zeta, eta
170        to give something meaning full
171    o change tiling of global_ocean.cs32x15 (12 tiles, 32x16) and generate
172      new output (all 4 tests) using default rotationPeriod.
173    o pkg KPP:
174      - add flag (LimitHblStable) to avoid limiting BL depth under stable conditions
175      - fix vertical indices in RI_IWMIX (match between KPP grid from 0 to Nr+1
176        and normal grid from 1 to Nr)
177    o Fix computations of L4rdt in mom_calc_visc.F
178    o eesupp:
179      new S/R ALL_PROC_DIE (like EEDIE, without irrelevant threads err msg):
180      should be called before a "stop" if we know that all process are going
181      to stop; if one Proc does call this S/R, will hang in MPI_FINALISE.
182    
183    checkpoint61o
184    o pkg/exch2: change check_depths to issue just a warning (instead of error+stop)
185    o model/src/ini_curvilinear_grid.F:
186       compute angleSin/CosC when they are not read from a file
187    o pkg/seaice:
188       add pseudo time stepping for LSOR
189    o pkg/exch2:
190       temporary fix for exch2_s3d_rx; update results of exp. hs94.cs-32x32x5.impIGW
191    o pkg/seaice:
192       Adding separate sea ice albedo, drag coefficients, and HO in Southern
193       Ocean from those in Arctic Ocean.  See *_south in SEAICE_PARAMS.h
194    o SingleCpuIO:
195       fix bug put before chkp61n (May 11), when more than 2 MPI cpu are used.
196    o pkg/seaice:
197       put exchanged variable in (local) common block for MPI+Multi-Threads
198       to work (necessary with exch1, and for now with exch2 too).
199    o verification: to get more experiments tested with mpi, mth and mpi+mth,
200      change tiling of:
201       aim.5l_Equatorial_Channel, aim.5l_LatLon, dome, exp4, global_ocean.90x40x15,
202       hs94.cs-32x32x5, MLAdjust, offline_exf_seaice & tutorial_plume_on_slope
203      update output of exp:
204       exp4, global_ocean.90x40x15(+.dwslp), MLAdjust(all 5),
205       tutorial_plume_on_slope and hs94.cs-32x32x5 (use default rotationPeriod)
206      + ideal_2D_ocean: use default rotation period + test Global_Sum_SINGLECPU
207                       (note: output.txt generated on faulks using only 1 tile)
208    o eesupp & mdsio (SingleCpuIO):
209     - remove MISSING_TILE_IO (from MDSIO_OPTIONS.h), replaced by run-time
210       parameter "W2_useE2ioLayOut" (read from file "data.exch2").
211       Note: was not effective for globalFile & useSingleCpuIO=F; now fixed.
212     - move MDSIO_SCPU.h (pkg/mdsio) to EEBUFF_SCPU.h (eesupp/inc).
213     - fix GLOBAL_SUM_SINGLECPU when using Exch2; re-use same buffers and same
214       gather/scatter S/R as with SingleCpuIO (=> 1 less 2D global RL array).
215    o pkg/exch2:
216     - new code to set-up W2-Exch2 topology (replace matlab-topology-generator):
217       read parameter file "data.exch2" if it exists; otherwise try default regular
218       cube without blank-tile; new header file "W2_EXCH2_SIZE.h";
219     - update matlab-topology-generator (exch2_setup_cs6_print.m) to be compatible
220       with new code (not to be used, just as a backup solution).
221     - add examples (e.g., for lat-lon-cap_120) of parameter file "data.exch2"
222       in utils/exch2/input.
223    
224    checkpoint61n
225    o eesupp & mdsio (SingleCpuIO):
226      - move mapping to global io-buffer inside gather_2d/scater_2d: this save
227        memory (1 less 2D global RL array); skip 1 buffer copy; and only send/
228        receive real*4 array (instead of real*8) to read/write 32.bit files.
229        (new template for gather_2d/scater_2d, new set of S/R MDS_PASS_R4,8toRL,S
230         and remove new mapping S/R)
231    o pkg/mdsio: in preparation for topology-generator within pkg/exch2:
232      - Change declaration of SingleCpuIO buffer, reduced to only 1 dim.:
233        xyBuffer_size, which is set to W2_ioBufferSize from W2_EXCH2_PARAMS.h
234        when using exch2. Add S/R to map global io-buffer to global model array.
235      - uses exch2_global_Nx,y instead of exch2_domain_nxt,nyt.
236    
237    checkpoint61m
238    o write_utils : change WRITE_1D_R8 to WRITE_1D_RL
239      and add 3 other S/R for other types (R4,R8,RS).
240      Change calls to WRITE_0D/1D_R[4,8,S,L] to match the type of argument.
241    o eesupp/inc/CPP_EEMACROS.h (EXCH & GLOBAL_SUM/MAX macros):
242     - ensure suffix (_R4,_R8,_RS,_RL) correspondance between macro and S/R ;
243     - reduce number of macro definitions (keep only those which are used);
244       can always call directly the corrresponding S/R if needed.
245     - everywhere in the code: change macros (EXCH & GLOBAL_SUM/MAX) suffix
246       _R4/_R8 to _RS/_RL when applied to _RS/_RL variable.
247     Fixed wrong type of arg in:
248       atm2d/put_ocnvars.F cheapaml/cheapaml.F ocn_compon_interf/ocn_apply_import.F
249       ctrl/ctrl_map_ini_ecco.F seaice/seaice_do_diags.F seaice/seaice_model.F
250     To fix: global_sum of var in common block is wrong (multi-threaded) in:
251       dic/dic_atmos.F ebm/ebm_area_t.F ebm/ebm_zonalmean.F sbo/sbo_calc.F
252     To fix: aim_v23/aim_do_co2.F (BARRIER & GLOBAL_SUM within bi,bj loops)
253    o adjustment.cs-32x32x1: test "blank tiles" when compiling with mpi; 2nd
254      "nlfs" mpi test is going to stop when checking for unconnected tile egdes.
255    o eesupp/src: new S/R to stop everyone when 1 (or more) Proc. find an error
256    o pkg/exch2: new S/R EXCH2_CHECK_DEPTHS to check that unconnected tile
257      edges are closed (zero depth); might happen with "blank tiles";
258      for now, disabled if using OBCS.
259    o tools/gemake2: delete modifs from March 27-29 2009 (with option "-mpi":
260      link *_mpi files from "MODS" dir) to return to a strait-forward behavior.
261    o move read_write.F to write_utils.F ; new parameter (maxLengthPrt1D)
262      to reduce length of 1.D array print in STDOUT.
263    o adjustment.cs-32x32x1: changed to oceanic test with 1 continent
264      + use 48 tiles (16x8): this will allow to test "blank tiles".
265    o start to test MPI + multi-threaded (change testreport to skip tests
266      where number of tiles do not match).
267    o genmake2: add option "-omp" to turn on Open-MP ;
268      passed to testreport (if using -mth) ; merge few (*+mth) optfiles.
269    o pkg/exch2 (+ utils/exch2): ignore blank tiles (instead of removing them)
270      and keep the original tile numbering. Note: compatible with old
271      W2_EXCH2_TOPOLOGY.h & w2_e2setup.F topology files.
272    
273    checkpoint61l
274    o Overlaps had been forgotten in calculating ijk keys : fixed
275    o fix cyrus makedepend for gcc 4.4
276    o experiment fizhi-cs-aqualev20:
277      switching to new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE)
278      and generate new output. Note: new output is much closer to the old
279      one (v1.8) generated with pgf77 -O2 on Mar 14 2007 than it is from
280      the previous one (v1.9) generated with pgf77 -O0 on Jun 13 2007.
281    o pkg/fizhi:
282     - change to avoid indices going deliberately over array-bounds
283     - remove unnecessary MPI stuff
284     - perpetual spring equinox with "#define FIZHI_USE_FIXED_DAY"
285     - new version of S/R GETPWHERE available with #define TRY_NEW_GETPWHERE:
286       does not go over array-bounds and therefore returns reliable output.
287     - in fizhi_driver.F & fizhi_turb.F, fix "get_alarm" calls:
288       this S/R has 4 output arguments, which are used inside "get_alarm";
289       when it is called with the same variable "ndum" in place of several
290       output arguments, this produces weird side effect inside "get_alarm"
291      (e.g., datein=dates(n) is overwritten by timein=times(n) since both
292       datein & timein, resp. 2nd and 3rd arg., are pointed to the same "ndum"
293       address) and produces error.
294    o tools/gemake2: (March 27-29 2009)
295      with option "-mpi": link *_mpi files from "MODS" dir (this is what
296      testreport does).
297    o lab_sea experiment: change from 2x1 tiles to 2x2 tiles and regenerate output
298    o pkg/seaice: fix bug in new version of S/R SEAICE_LSR.F:
299       update lab_sea.lsr & lab_sea.salt_plume results
300    o pkg/seaice:
301      Major overhaul of the LSOR solver: change discretization from original
302      finite differences to finite volume. The old routine is still in the
303      file seaice_lsr.F and can be turned on with the CPP-flag
304      SEAICE_OLD_AND_BAD_DISCRETIZATION
305      Along with this change, the discretization of the strain rates is changed.
306      The same flag turns on the old discretization in seaice_calc_strainrates.F
307      All verification experiments with seaice are affected (except for
308      seaice_exf_offline); global_ocean.cs32x15/input.icedyn recovers the old
309      results by setting the above flag.
310      Further changes involve changes in defaults:
311      - ALLOW_FLOODING is defined and turned on by default
312      - SEAICEadvSnow = .true. is now the default
313      - SEAICEadvSalt = .true. is now the default
314      - SEAICEadvAge  = .true. is now the default
315      - SEAICE_clipVelocities  = .false. is now the default
316                                         (as per J. Zhang's recommendation)
317      - B-grid, and thus not tested: SEAICE_TEST_ICE_STRESS_1/EXPLICIT_SSH_SLOPE
318        is defined, SEAICE_TEST_ICE_STRESS_1 is renamed into SEAICE_BICE_STRESS
319      - seaice_growth: replace computation of UG by a simple copy from wspeed
320    
321    checkpoint61k
322    o pkg/seaice: a few bug fixes mostly concerning the metric terms:
323      seaice_lsr: fixed a few metric terms,
324                  affects lab_sea.lsr, lab_sea.salt_plume, seaice_obcs
325                  add more debugging diagnostics
326      seaice_evp: removed superfluous many metric terms of FV discretization
327                  of stress divergence
328                  affects lab_sea, lab_sea.hb87
329      seaice_ocean_stress: removed superfluous many metric terms of FV discretization
330                  of stress divergence for non-evp solver
331                  (this part is not tested anywhere)
332      seaice_calc_strainrates: fixed a bug in no-slip boundary conditions,
333                  they were effectively only half slip
334                  affects lab_sea.hb87
335      updated all relevant verification experiments (except lab_sea//output_adm.txt
336        which was left over, but fails at level 7 & 6)
337    
338    checkpoint61j
339    o pkg/seaice: turn a few hard wired parameters into run time parameters
340    o pkg/seaice/exf/monitor: turn netcdf coordinate variable T into model
341      time in seconds as promised by the usints in seaice_monitor and exf_monitor
342    o pkg/mnc: fix the coordinate variables for multi-tile curvi-linear grids
343      that are not cubed-sphere grids
344    o pkg/seaice: fix a bug for the rare case of SEAICE_VECTORIZE_LSR
345    o pkg/ctrl:
346      fix bug in ctrl_depth_ini.F (EXCH_XYZ was applied to 2-D field xx_r_low)
347    o non-hydrostatic (calc_gw.F):
348      fix viscA4 on CS-grid + fix diagnostics: Wm_Diss & Wm_Advec
349      update output of exp. global_ocean.cs32x15.viscA4
350    o remove backward compatibility for thetaMin,phiMin
351      (replaced by xgOrigin,ygOrigin on Jan 27, 2009)
352    o pkg/exf: fix a serious bug in exf_set_uv.F: do a rotation of the
353      interpolated wind field not only for curvilineargrid=.true., but also
354      for a rotated grid (rotateGrid=.true.)
355    o pkg/exf: add capability to bypass interpolation for runoff
356      by setting yet another CPP-flag
357    o eesupp/src, B-grid exchange:
358      add simple (6 tiles, non MPI) CS exch + standard interface S/R.
359    o autodiff
360      new CPP option ALLOW_TAMC_SINGLEPREC_COMLEV
361      allows to switch to single-prec common blocks;
362      corresponding switch occurs in tamc.h, integer isbyte
363      TAF store directivs "byte" and "kind" seem equivalent;
364      Most tamc.h have been updated correspondingly.
365    
366    checkpoint61i
367    o autodiff:
368      fix autodiff_sore/_restore indices for obcs
369      (spotted by I. Hoteit, M. Mazloff)
370    o pkg/autodiff, pkg/ctrl:
371      Add flag to reduce all tapelev I/O to single-prec.
372      In data.ctrl set
373        doSinglePrecTapelev = .TRUE.
374    o model/src/ini_curvilinear_grid.F, new grid-file format without EXCH2:
375      check in hack for SX8 compiler (for dxV, dyU); remove it afterwards.
376    o pkg/shelfice: fix bug with SHELFICEconserve flag, prepare for
377      real fresh water flux (not yet)
378    o pkg/mdsio & rw:
379     - add argument & option to S/R MDS_WRITEVEC_LOC (avoid Open/Close & write-meta)
380     - add simple interface S/R to MDS_WRITEVEC_LOC in pkg/rw: WRITE_GLVEC_RX.
381    o pkg/flt:
382     - replace FLT_INIT by 3-steps standard initialization S/R: readparms,
383       init_fixed & ini_varia.
384     - clean-up & simplify linear interpolation S/R:
385       move flt_bilinear.F -> flt_interp_linear.F ; add arg. myThid.
386     - fix some indices (mainly vertical index) ; add IMPLICIT NONE.
387     - more efficient I/O, using new options of MDS_WRITEVEC_LOC S/R.
388     - add vert. coordinate & horiz. indices to output files.
389     - change vertical position in initial condition, from index to depth [m].
390     - store horizontal (decimal) indices i,j in common block (instead of coord. x,y)
391       (easier to get to a curvilinear grid) ; delX,delY no longer used.
392    o pkg/ggl90: a few modifications:
393     - fix bottom boundary condition, and interpolation of KappaE
394       near top and bottom
395     - use same set of viscosity/diffusivity for TKE/momnetum/tracer
396     - add smoothing option as in Blanke and Delecluse (1993) (--> ALLOW_GGL90_SMOOTH)
397     - add a few options for mixing-length upper limit (--> mxlMaxFlag)  
398    o rename thetaMin,phiMin -> xgOrigin,ygOrigin
399      (maintain temporary backward compatibility, until next checkpoint)
400    
401    checkpoint61h
402    o pkg/diagnostics with "periodic averaging diagnostics":
403      fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
404    o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
405    o pkg/obcs: fix loop ranges for balancing code
406    o pkg/flt:
407     - improve criteria for finding which tile owns a float.
408     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
409    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
410      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
411      with ocean biogeo)
412    o pkg/flt:
413     - do some cleaning and fix the restart ;
414     - add output.txt in flt_example/results to get this pkg tested.
415    o genmake2: add an EXTENDED_SRC option and flag.
416       for now, cannot be turned on on command line (only through genmake_local)
417    o pkg/mdsio: read/write vector:
418     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
419     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
420       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
421     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
422      (drop to 4 digits matching for grad). But this test does not look very
423      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
424    
425    checkpoint61g
426    o pkg/flt:
427      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
428       + make OPTIONS file more standard.
429      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
430      - fix _BYTESWAPIO CPP-Flag
431      - standard reading of file-parameter "data.flt"
432      - fix argument list of S/R FLT_RESTART
433      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
434    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
435    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
436      a still unfixed compiler/optimization bug
437    
438    checkpoint61f
439    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
440      update results of global_ocean.cs32x15.icedyn test.
441    o move getcon.F from model/src to pkg/fizhi.
442    o pkg/exf: add parameter for extrapolation of temp up to the surface
443       and option to prevent negative evap (in bulk_largeyeager04 only).
444    o Prather Advection scheme: fix tracer conservation for divergent flow
445      (e.g., when using NonLin Free-Surface).
446    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
447    o gmredi (Visbeck-variable-K):
448     - add more parameters to Visbeck-variable-K.
449     - use a 5 points average for dSigmaR in Visbeck-K calculation
450       (more "homogenous": same stencil and same weights as in dSigmaH)
451     - update output of ideal_2D_oce experiment.
452    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
453      (#undef REAL4_IS_SLOW)
454     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
455       coordinate variable
456     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
457       (surface forcing fields), removes some of the functionality
458     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
459     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
460       probably not all: copy _RS surface flux fields to RL field before
461       calling DIAGNOSTICS_FILL
462     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
463       real*4 (CALL EXCH_*_RS) versions.
464     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
465       (generate new output).
466    
467    checkpoint61e
468    o gmredi (Visbeck-variable-K):
469      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
470      - change computation of Visbeck-K where Slope > Smax :        
471        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
472        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
473    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
474      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
475    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
476    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
477      does not become too large (to avoid precision problems in implicit-diffusion
478      solver); update ideal_2D_oce output.
479    o pkg ggl90:
480      - in ggl90_cal.F: compute only one set of visc/diff, used to
481        step forward TKE/T/S/momentum
482      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
483        have Prandlt =1)
484    o gmredi (fm07):
485      - add lower limit on Transition layer thickness + lower limit on 1/lambda
486      - allow to set few more params from data.gmredi
487    o pkg ggl90:
488          - add missing sqrt(2) factor in computation of mixing length
489            scale in ggl90_calc.F
490            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
491    
492    checkpoint61d
493    o adjoint modifs
494      - adapt to new field rhoInSitu
495      - allow to revert from StoreDynVars2D, StoreDynVars3D
496        to individual fields
497        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
498    o store 3-D (in-situ) density in commom block (DYNVARS.h)
499     - save 1 rho computation.
500     - no longer modify T & S inland when using down_slope pkg.
501    o gad_som : allow to switch to SOM advection for T & S without corresponding
502      pickup files (using new S/R: MDS_CHECK4FILE).
503    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
504      (for useSingleCpuIO to work in multi-threaded)
505    o pkg/shelfice:
506     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
507       with SHELFICEtopoFile in data.shelfice
508     - move code for reading ice shelf topography and modifying hFacC into separate
509       subroutines of the shelfice package
510     - separate initialisation of "fixed" and "variable" variables
511     - kTopC is not (yet) replaced by kSurfC, although this is possible
512    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
513    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
514      and rename:
515      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
516      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
517    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
518    
519    checkpoint61c
520    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
521      to add mass source/sink of fluid in the interior (3-D generalisation
522      of oceanic real-fresh water flux).
523    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
524    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
525    o new pkg: down_slope
526      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
527      - presently, modify T & S inland (dwnslp_calc_rho.F).
528        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
529      - implementation for ocean in P-coords not tested.
530      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
531    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
532      (to facilitate conversion of oceanic pkg to p-coordinate).
533    o change FIND_RHO to FIND_RHO_2D :
534      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
535    o new pkg: cheapaml
536    
537    checkpoint61b
538    o exch2:
539      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
540      - no longer depend on the order sequence (N,S,E,W).
541      - 3rd exchange no longer needed (tested with 24 tiles).
542      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
543      - exch_UV_A-grid readily available (but not yet tested).
544      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
545      (both are no longer needed) in exch_uv: no effect in forward run; but
546       get truncation error differences with adjoint exch.
547    o exch2:
548     - change index-bounds storage (moved from target to local tile,
549       more intuitive this way) ; rename/remove some variables.
550     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
551    
552    checkpoint61a
553    o exch2/matlab-topology-generator:
554      fix bug in index bounds for N-S internal exchange (hard to tell if this
555      had any effect on the solution).
556    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
557      is exceeded
558    o testreport: modify syntax of awk, so that it works also with
559      awk, and not only with nawk and gawk
560    
561    checkpoint61
562    o autodiff
563      Change default for TAF usage by removing argument '-nonew_arg'
564      This changes TAF subroutine argument list (ordering of active var.)
565      Omission of this flag leads to incompatibility w.r.t. TAMC
566      To restore TAMC-compatibility, need following modifs:
567      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
568      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
569      Tested TAF version is 1.9.22
570      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
571    
572    checkpoint60
573    --->>> This is the last checkpoint for which generating the adjoint
574    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
575    --->>> by default.
576    --->>> Future checkpoints will ommit this flag by default.
577    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
578    o pkg/grdchk: Add gradient check to etan0 perturbations.
579    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
580    o pkg/autodiff: more flexibility in zeroadj.
581      model/src: modifying do_oceanic_phys.F accordingly.
582    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
583    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
584      special setup of gmredi for which the adjoint is stable
585      enough for parameter optimization.
586    o bridging the gap between eddy stress and GM.
587      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
588          along with a change in CPP option (now ALLOW_EDDYPSI).
589      -> when using GM w/ GM_AdvForm:
590          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
591          is applied either in the tracer Eq. or in momentum Eq.
592          depending on data.gmredi (intro. GM_InMomAsStress).
593      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
594      The key modifications are in model/src/taueddy_external_forcing.F
595      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
596    
597    checkpoint59r
598    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
599      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
600      fix option to read coriolis(@ cell-corner) from files with CS-grid.
601    o pkg/mnc: add some attributes to standard 1D-coordinate variables
602    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
603      mass points, when using mnc for output
604      - add runtime parameter (missing_value, missing_value_int) to override
605        default (which is the value of getcon('UNDEF'))
606    o pkg/mnc: prepare mnc for the actual use of missing values with the
607      diagnostics package: small fix in mnc_cw_readwrite.template and more
608      initialisation of never used fields
609      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
610      versions
611    o pkg/thsice/thsice_ini_vars.F added default initial values so that
612      thermodynamics sea ice solver does not blow up when some initial fields
613      are missing.
614    o move from external_forcing_surf.F to ini_forcing.F
615      the p-coord. hack consisting in using pLoad to set phi0surf ;
616      update output of tutorial_global_oce_in_p (affected @ truncation level).
617    o Freshen up a bit hs94.1x64x5, notably:
618      remove rotationPeriod and tRef=5*0. (adjoint only), and add
619      exactConserv=.TRUE.
620    o pkg/generic_advdiff:
621      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
622      applies to files where Temperature & Salinity 2nd Order moments are used.
623    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
624      this uses a dynamically allocated internal state data structure
625      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
626      and requires a fortran 90 compiler
627    
628    checkpoint59q
629    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
630       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
631    o Refresh tutorial_global_oce_biogeo, notably:
632      - change bathymetry (put back seamounts in ACC, use hFacs)
633      - change EOS (POLY3 --> JMD95Z)
634      - use Bryan-Lewis vertical diffusivity
635      - use multidimensional advection
636      - remove old virtual virtual in dic pkg, now done through ptracer pkg
637      - change a couple of parameters in dic pkg
638    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
639    o pkg/obcs: change default to OBCSfixTopo = .true.,
640      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
641      - replace "debugMode" with "debugLevel .GE. debLevB"
642    o implementation of TAF directives for gchem,cfc,dic
643    o remove "exp5" (replaced by tutorial_deep_convection).
644    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
645      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
646      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
647      --> changes results in exp4, seaice_obcs
648    o tutorial_deep_convection :
649      update the set-up and increase resolution and domain size ; start
650      from pseudo initial conditions = output at t=120mn in order to see
651      something happening when running testreport.
652    o pkg/seaice: add os7mp as an advection scheme
653                  add check for advection schemes
654                  add a flag for restoring T and S underneath sea ice
655    o pkg/my82: add netcdf-support and diagnostics
656    o thsice pkg:
657      - Now hsMax limits snow height by turning it into ice following
658        flooding scheme (and now conserving energy)
659      - Slight rewriting of the formula in thsice_calc_thick.F
660      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
661      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
662    
663    checkpoint59p
664    o gchem / dic / cfc :
665      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
666      - add new parameter files: "data.dic" & "data.cfc" ;
667      - various re-arrangement in initialisation & header file ;
668      - fix tutorial_global_oce_biogeo for multi-threaded test.
669    o pkg/dic: test for "pickup_dic" file when restarting ;
670      if no pickup-file, can restart with a re-initialised pH (same as it did
671      before) providing pickupStrictlyMatch is set to False.
672    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
673      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
674    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
675      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
676    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
677     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
678       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
679    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
680       scheme to use for vorticty-term ;
681     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
682       (with default selectVortScheme, return to original discretisation)
683     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
684    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
685    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
686      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
687      also fix diagnostics VISCAHW & VISCA4W.
688    
689    checkpoint59o
690    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
691    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
692      move a few statemens out the main loop into separate loops
693    o pkg/shelfice:
694      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
695        (kg/m^2/s), does not break tests, because in verification/isomip,
696        rhoConstFresh=rhoConst (by accident)
697      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
698      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
699        new file model/src/seawater.F, so that they are available for all pkgs.
700      - convert potential temperature into in-situ temperature. This changes the
701        isomip tests => update tests
702    o add a flag writePickupAtEnd (default=true) to be able to suppress
703      writing a pickup at the last timestep
704    o tools/mpack-1.6 :
705      - disable automake (not working) and autoconf (not needed).
706      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
707        also cleaner with much less compilation warnings.
708    o pkg/profiles:
709      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
710      (for "less than 32 characters name" compiler requirement)
711    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
712      conditions that have a different sampling frequency than S/T/U/V obcs
713    o pkg/diagnostics (stats-diags):
714      - fix global Min/Max in case 1 processor get only empty tiles
715    o genmake2: replace (4 times)
716         make genmake_tc_1.o >> genmake_warnings 2>&1
717      with
718         COMM="$CC $CFLAGS -c genmake_tc_1.c"
719         echo $COMM >> genmake_warnings
720         $COMM >> genmake_warnings 2>&1
721      to make genmake2 always see the value of CC as specified in the optfile.
722    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
723      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
724      - modify verification advect_cs test to test SOM-advection on CS-grid.
725    o pkg/ctrl:
726      - Rewrite of ctrl_map_ini_ecco.F,
727        introducing a generic routine (ctrl_map_ini_gen.F).
728      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
729    
730    checkpoint59n
731    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
732      number in dedicate array "hdiag":
733      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
734        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
735      - many small changes (integer format) for large number of diagnostics
736      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
737        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
738    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
739      usingSphericalGrid, this allows to define the rotated grid coordinates
740      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
741      geographical coordinates according to the inverse of the rotation defined
742      by the Euler angles, so that Coriolis parameter and online-interpolation by
743      exf works with the geographical coordinates on XC/YC/XG/YG.
744      Naturally, this feature does not work with all packages, so some
745      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
746      profiles), because there the coordinates are assumed to be regular
747      spherical grid coordinates.
748    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
749      - introduce isopycnal diffusion coefficient control.
750    o tools/adjoint_options:
751      - additional control vector components.
752    o pkg/mnc: have mnc create marginally meaning full coordinate variables
753      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
754    o pkg/mypackage:
755      - add example of read/write pickup for state-var ;
756      - add entry points to the main code for state-vars diags & write-pickup.
757    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
758      transitions for useExfYearlyFields
759      - add new subroutine that determines the file to read from for
760        use*YearlyFields = .TRUE. and .FALSE.
761      - add a verification experiment to global_with_exf that tests
762        useExfYearlyFields with USE_EXF_INTERPOLATION defined
763    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
764      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
765      subroutines (which could be generated from a template, because they are
766      almost identical), for now they are included in obcs_prescribe_read.F for
767      simplicity
768    o pkg/exf:
769      - add a little more diagnostic to exf_interp_read (in analogy to
770        mds_read_field, can be turned off with debugLevel < debugLevA=1)
771      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
772        ugly but fast by unrolling short inner loops, inserting a unroll=8
773        directive in routine lagran, and splitting a loop and making do while the
774        outermost loop (the latter requires the intoduction of index arrays)
775    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
776    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
777      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
778    o verification/seaice_obcs: updated for restart test and latest options
779    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
780      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
781      for now this is only available for the C-grid code and also within
782      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
783    
784    checkpoint59m
785    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
786      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
787    o gad_som : fix flux output (& diagnostics) to have same units as other  
788      advection scheme fluxes (was previously multiplied by deltaT).  
789    o added verification/seaice_obcs both to test seaice open boundaries
790      and to provide an example matlab scrpt for generating them
791    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
792    o pkg/salt_plume: clean up salt_plume_frac.F to
793      remove redundancy in PlumeMethod 1 and 4
794    o pkg/kpp: added saltplume diagnostics
795    o pkg/obcs and pkg/seaice:
796      - do not set uice and vice to zero when OB*icefile are unspecified
797      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
798      - moved seaice tracer obcs after call to seaice_growth
799    o pkg/salt_plume: added various options for salt plume depth
800      criterion and for vertical distribution of the salt
801    
802    checkpoint59l
803    o pkg/ptracers: new version of ptracers pickup:
804      read meta file and write only fields which are needed to restart.
805      ( same logic as main pickup file ; also using pickupStrictlyMatch )
806    o pkg/seaice:
807      - add timescale for melting due to warm mixed layer as a means of
808        setting SEAICE_availHeatFrac more conveniently
809      - add a CPP-flag/runtime parameter check for flooding algorithm
810      - reformulated availHeat in seaice_growth.F to be independent of AREA
811    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
812      unit changes
813    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
814    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
815      SX vector computer.
816    o pkg/seaice:
817      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
818        seaice forcing fields can now be read only through pkg/exf
819      - removed some unused halos
820    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
821    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
822      or U/VICE from U/VWIND before computing U/VSTRESS
823    
824    checkpoint59k
825    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
826      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
827    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
828      all experiments pass when compile with un-initialised var. checking option.
829    o added pkg/salt_plume
830    o script to test restart (for now, in MITgcm_contrib/jmc_script)
831    o pkg/seaice: new read/write pickup version.
832      read meta file and write only fields which are needed to restart.
833      ( same logic as main pickup file ; also using pickupStrictlyMatch )
834    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
835    o lab_sea.hb87: modify the domain & update output.hb87.txt :
836      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
837      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
838      process. Fixed here by closing the domain at the Northern boundary.
839    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
840    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
841      a set of consecutive levels in/from a 3-D array.
842    o pkg/ptracers:
843      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
844      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
845    
846    checkpoint59j
847    o in pkgs: dic, obcs, offline, rbcs:
848      standard way to compute coeff. for time interpolation between 2 time reccords
849      which retains full precision (& make results less dependent on compiler).
850      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
851    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
852      packages instead of reading ice cover and wind speed separately
853    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
854     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
855      to allow to compile customized code before the update)
856    o cleaning-up:
857      - fix CPP instruction syntax in pkg/obcs
858      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
859        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
860      - fix some threads issue in IO parts.
861    o pkg/dic:
862      - add tons of "_d 0" (--> much better testreports !)
863       and then update outputs of tutorial_global_oce_biogeo
864    o pkg/mom_fluxform:
865      add a special version of momentum advection intended to conserve momentum
866      next to a bathymetry step or a coastline edge. (default = off = #undef)
867    o new read/write pickup version:
868      - for now, only implemented for main (mdsio) pickup file.
869      - write out only what is needed to restart; merge pickup_nh , pickup_ph
870        and main pickup together.
871      - read meta file; read only what is needed to restart; stop if a field
872        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
873        if it make sense (even if the restart is not perfect).
874      - if no meta file, assume that pickup to read corresponds exactly to
875        a pickup that would currently be written.
876      - read pickup written in the old format (until checkpoint59i) if it
877        recognizes an old meta file (no field-list).
878      - add a meta file in exp. which starts from a pickup: 2 cases:
879        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
880         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
881        b) a meta file describing the content of the associated pickup file
882         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
883    o pkg/mdsio & pkg/rw:
884      - new routine to read a meta file ; new set of routine to read
885        Multiple-fields file (with meta file).
886    o added open boundary conditions capability for seaice
887        HSNOW, HSALT, UICE, and VICE
888    
889    checkpoint59i
890    o adjoint:
891      * fix multiDimAdvection adjoint
892        (partial recomputation problem by TAF for fVerT(:,:,kDown)
893        and comlev1 size definition (maxpass vs. max. number of tracers)
894      * verification/global_ocean.90x45x15 adjoint now tests
895        NLFS and multiDimAdvection using DST3 (=30)
896      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
897    o pkg/kpp: add "_d 0" to real constant (if missing);
898      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
899      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
900    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
901      for internal parameters related to restart process (formerly from PARAMS.h)
902      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
903    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
904      as argument. (only atm2d & obcs write_pickup have not yet been updated)
905    o pkg/monitor:
906      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
907      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
908      - account for deep Atmosphere factor and density factor (anelastic)
909    o added open boundary conditions capability for seaice HEFF and AREA
910    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
911      thermodynamics
912      - requires a little reorganization, which affects the testreport results
913        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
914        so that now the conservative form is tested
915      - add a few comments
916    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
917    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
918    o add new diagnostics to seaice: advective, diffusive fluxes (only for
919      multidim-advection, for scheme 2 they are not filled) and transports,
920      thermodynamic growth rates
921    o change units of EmPmR (inside the code, + within coupling interface)
922      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
923      Affects results @ truncation level (cg2d match) and update output of
924       experiments: lab_sea(6), global_ocean.90x40x15(10),
925      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
926      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
927      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
928      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
929    
930    checkpoint59h
931    o pkg/exf:
932      - improve vectorization by moving if-statement out of loops in
933        exf_mapfields, exf_radiation
934      - exf_bulkformulae.F: introduce 2D fields and vectorize code
935    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
936    o testreport:
937      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
938        monitor & update offline_exf_seaice exp. output.
939      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
940    o pkg/seaice:
941      - bug fix in the evp solver: boundary conditions were affected be
942        masking of zMax/zMin (changes results)
943      - minor bug fix in boundary conditions in seaice_calc_strainrates
944        (changes results for no_slip)
945      - seaice_lsr.F: make interpolation of eta dependent on boundaries
946      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
947      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
948        stress formulation and no-slip boundary conditions
949    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
950      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
951    o pkg/seaice: a first HSALT time stepping equation has been checked in
952    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
953      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
954      without requiring DO-IF statements
955    o pkg/thsice:
956      use continuous power-law function for partition of energy between lateral
957      melting/freezing and thinning/thickening ; old code using step function
958      still available with #undef THSICE_FRACEN_POWERLAW
959      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
960    o testreport: change AD testing : check against results/output_adm.txt
961      using same scripts as for forward test.
962    
963    checkpoint59g
964    o adjoint testing: in preparation for changing testreport:
965      - output format: cost and grad written on separated lines
966      - ad output results in directory "results" (instead of "results_ad")
967    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
968    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
969    o pkg/ecco: allow user defined cost function contributions
970    o testreport:
971      Allow to choose (per experiment) the list of tested output variables
972       and the main variable (used to issue a pass/FAIL ) ;
973      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
974      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
975      Also modify printing of summary:
976       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
977       b) echo the list of tested variables in the individual summary.txt of
978          each experiment.
979    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
980      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
981      (but still depend on the tile decompostion of the domain).
982    o pkg/seaice: change a discretization detail to make the B-grid code
983      "more symmetric". This change is likely to remove all "ridges/leads" that
984      where quasi-aligned with the grid in B-grid solutions. It may also be
985      the solution to the stress coupling issues with the B-grid.
986    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
987      remove .cvsignore from input dir. (since testreport no longer run here).
988    o pkg/thsice:
989     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
990     - fix reshaping of sea-ice just after advection:
991       melt all the ice only if ice-volume is too small.
992     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
993       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
994     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
995    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
996      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
997    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
998      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
999      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
1000      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
1001      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
1002      -> update output.txt
1003    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
1004     this affects truncation error: -> update output.txt of exp:
1005      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
1006      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
1007    
1008    checkpoint59f
1009    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
1010    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
1011      a bounded range (in forward mode)
1012    o pkg/ecco, ctrl, autodiff and mom_common:
1013     internal parameter controls, completements of implementations
1014    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
1015    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
1016      (not seem any difference in testing results).
1017    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
1018       at face corners.
1019    o pkg/generic_advdiff:
1020     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
1021      loop range indices for computing vertical advection tendency
1022      and do the calculation in the interior only (no overlap) ;
1023      for now, only implemented for SOM advection (to save CPU time).
1024     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
1025    o exch2 adjoint
1026      First set of changes:
1027      - add exch2 hand-written adjoint templates
1028      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
1029        This will require cleanup in pkg/autodiff/*.F
1030        (changed routines currently kept separate in verif. code/)
1031      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
1032        that used to hide exch2 or cubed-sphere specific code
1033        (commented via 'cph-exch2')
1034    o pkg/seaice
1035      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
1036    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
1037       output of global_ocean.cs32x15.thsice .
1038    
1039    checkpoint59e
1040    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
1041      for B-grid vector (not yet tested) and C-grid vector (<- only used
1042      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
1043    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
1044      (#ifdef ALLOW_SALT_PLUME)
1045    o gather_2d/scatter_2d: removed halo regions
1046    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
1047      scheme and the corresponding test case (under front_relax dir). For now,
1048      only available with Skew-flux form and not yet tested in realistic set-up.
1049      adjoint: store directives updated, but gradient checks deteriorated,
1050      so maybe GM/Redi adjoint is now broken.
1051    o seaice adjoint
1052      * add AREA, HEFF, HSNOW as control variable
1053        (should not change lab_sea results)
1054      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
1055    o pkg/seaice:
1056      * added computation of saltFlux in seaice_growth;
1057        For time being, sea ice salinity is assumed constant
1058        contribution of snow flooding to freshening of sea ice is neglected.
1059        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
1060        defaults to 0.0 in order to maintain backward compatibility.
1061        Typical values for SEAICE_salinity are 4 to 10 g/kg.
1062      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
1063      * added SEAICE_availHeatFrac, which specifies fraction of surface level
1064        heat content used to melt or grow ice
1065      * commented out cap of HICE: it helps keep ice thinner
1066      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
1067      * applied OBCS T/S mask to HEFFM sea ice mask
1068    
1069    checkpoint59d
1070    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
1071     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
1072     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
1073    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
1074     and change default value of parameter "GM_Small_Number";
1075     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
1076       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
1077       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
1078    o pkg/ecco: cost function when applying pkg/smooth to controls
1079    o pkg/ctrl: add forcingPrecond run time parameter
1080    o pkg/seaice:
1081     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
1082     - fix bug in metric terms of u-equation in LSR solver (implicit part),
1083       changes verification/lab_sea
1084     - rearrange implicit part of u-equation in LSR solver to make it easier to
1085       read, understand, and debug. This causes changes at the truncation level.
1086     - fix (serious) bug in the boundary conditions (sign error in the implicit
1087       part) of the LSR solver. Changes all LSR results.
1088     - fixed problem with HSNOW initialization to avoid thick snow when AREA
1089       is initilized with small values - does not change lab_sea results.
1090     - added HsnowFile initialization capability
1091    o pkg/smooth: addition to model/src and pkg/ctrl so allow
1092     initialization of pkg/smooth and application to control vector
1093    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
1094    o dependencies: pkg/profiles requires pkg/cal
1095    o pkg/profiles:
1096     - added option ALLOW_PROFILES_GENERICGRID
1097         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
1098         that interpolation information (grid points and coefficients) is provided
1099         within the netcdf input files.
1100         -> sample matlab scripts can be found in MITgcm_contrib/gael
1101         that allow you to prepare netcdf input files.
1102     - also modified: cleaner include statements, cleaner error print statements,
1103       cleaner stops when error, and more tests of the netcdf input files consistency.
1104    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
1105    o pkg/seaice:
1106     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
1107       requires a new routine: seaice_diagnostics_fill.F
1108     - make sure that seaice does not move if not forced (pressure replacement
1109       method, Hibler and Ip, 1995), changes results
1110     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
1111     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
1112       It is turned off by default (=-1.), because it changes the results.
1113     - make it possible to read AREA from a file, too.
1114    
1115    checkpoint59c
1116    o add S/R and diagnostics for oceanic mixed-layer depth
1117    o move GMRedi call after all vertical mixing schemes (including KPP)
1118    o pkg/thsice:
1119     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
1120      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
1121    o pkg/obcs:
1122     - bug fix for balance code
1123    o pkg/seaice:
1124      - allow values of SEAICE_elasticParm > 1
1125      - add new parameter SEAICE_evpTauRelax as an alternative
1126        to SEAICE_elasticParm
1127      - make lsr boundary conditions free slip (by default), changes result
1128      - add code for no slip boundary conditions for lsr
1129      - set minimum of zeta to zero (and not 4e8) (changes results)
1130      - add a cap on AREA after advecting AREA if seaice_growth is not called
1131    o change calculation of Visbeck K:
1132      - no longer depend on tapering scheme; instead, compute slope (limited
1133        by GM_maxSlope). this is equivalent to what was comuted before with
1134        clipping or linear tappering.
1135      - fix vertical averaging (wrong by 1/2 level)
1136      - leave the old version (but will not be maintained) within
1137        #ifdef OLD_VISBECK_CALC / #endif
1138      - update output of exp. ideal_2D_oce
1139    o change error catch in calc_r_star to improve vectorization
1140    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
1141      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
1142    o adjoint:
1143      Re-organized adjoint checkpointing according to Matt Mazloff
1144      (but with modifs/completions/cleanups)
1145      Storing is now bundled into large arrays to optimized I/O
1146      (and second step in cleanup of the_main_loop)
1147    
1148    checkpoint59b
1149    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
1150      - export/import (between ocean & coupler) fields needed for ocean DIC.
1151    o pkg/seaice:
1152      - get rid of three more exchanges seaice_calc_viscosities (required
1153        different loop boundaries in seaice_lsr and seaice_ocean_stress)
1154      - bug fix in seaice_ocean_stress (update of lab_sea required)
1155      - reduce loop boundaries to necessary minimum also in seaice_evp
1156      - go back to the old way of computing deltaC/Z as the adjoint likes that
1157        better
1158    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
1159      passive tracer to an Age Tracer) + update output.txt
1160    o pkg/exf:
1161      - implement A-grid / C-grid selection for wind-stress input files.
1162      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
1163      for now, in exf_bulk_largeyeager04.F only :
1164      - change implementation for case where windspeed + 2. components wind-stress
1165        are read-in. AND use rhoConstFresh to convert evap.
1166    o pkg/seaice:
1167      - use correct EXCH_UV for wind-forcing (on A-grid).
1168      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
1169        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
1170    o pkg/exf:
1171      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
1172      EXF_INTERPOLATION:
1173      - merge global_with_exf/code version of exf_interp_read.F
1174        to the main code ;
1175      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
1176        reading the file ; Important: This options needs to be defined to recover
1177        previous code.
1178        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
1179      - no longer loose real*8 precision along the way when using exf_iprec=64.
1180    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
1181      - change discretisation of evp-solver in order to avoid another exchange
1182        (changes lab_sea) and clean up a little
1183      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
1184        help the adjoint (this also changes the results slightly)
1185      - add a few "_d 0" where they had been missing in seaice_evp.F
1186      - cleaning up: remove unused seaice_calc_rhs.F
1187    o pkg/exf: some cleaning-up:
1188      - change various "constants" into runtime parameters
1189      - cleaned-up Large&Yeager04 routine which should eventually
1190        replace exf_bulkformulae.F (changed names of S/R and CPP)
1191        and merged various ALLOW_ATM_WIND options
1192     only used with thsice pkg (in thsice_get_exf.F):
1193      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
1194        which are used when useStabilityFct_overIce=TRUE (= the default)
1195      - change default values of ice & snow emissivity and scale downward LW
1196        by ice & snow emissivity.
1197    o pkg/thsice:
1198     fix few little problems, in thsice_calc_thickn.F:
1199      - growth vertically (and not laterally) if iceFrac == iceMaskMax
1200      - melt only laterally if hIce < hThinIce (as the comments say)
1201      and in thsice_extend.F:
1202      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
1203      - start to form ice as soon as the minimum ice-volume is reachable.
1204     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
1205      and cpl_aim+ocn
1206    o pkg/kpp
1207     - move computation of surface related input fields to KPP into a new
1208       subroutine kpp_forcing_surf.F
1209     - remove wrong (within bi,bj loops) EXCH calls.
1210     - little cleaning (add argument myThid in last position, cvs header ...)
1211     - for now, fix conservation problem by exchanging KPPviscAz (may not
1212       be the best fix)
1213    o pkg/seaice
1214     - check for inconsistent evp parameter/cpp-flag combination
1215     - remove leftover errIO flat for obsolete name list error handling
1216    o OpenAD
1217     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
1218    
1219    checkpoint59a
1220    o pkg/seaice: some parameter clarifications and a little bit of clean up
1221    o pkg/thsice: rename run-time parameters:
1222       himin       -> hIceMin
1223       himin0      -> hThinIce
1224       hihig       -> hThickIce
1225       i0          -> i0swFrac
1226       transCoef   -> bMeltCoef
1227       frac_energy -> fracMelting
1228      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
1229       with default values (for now) that do not change the results.
1230      remove old version of thsice vars advection in pkg/seaice.
1231    o in FFIELDS.h:
1232      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
1233      - make pLoad & sIceLoad always available (but still only used if
1234         ATMOSPHERIC_LOADING is #define).
1235    o pkg/kpp: replaced _KPP_RL with _RL
1236    o bug fixes for vertical diffusivity computations when both KPP and
1237        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
1238        are no longer updating the vertical diffusivity array
1239        (passed as argument) but are (re-) setting those arrays.
1240    o pkg/seaice: fix bug in evp solver, while doing that
1241      - change (improve?) discretization of stress computations for both
1242        cgrid-lsr and evp solver
1243      - add a new routine to compute strain rates
1244      - the above changes lab_sea results
1245      - add no slip conditions for evp solver (off by default), lsr-version
1246        may follow
1247      - fix exchange for shear at Z-points (does not change lab_sea)
1248      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
1249        (to force the user to pick a time step since there is not "safe" way
1250        of choosing it)
1251      - add principal stress diagnostics
1252      - rearrange fields for evp a little to avoid having to call a: too many
1253        exchanges and b: exchanges for stress trensor components which we do
1254        not have.
1255      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
1256        of evp, complete rewrite for lsr case (latter is does not yet work
1257        in all cases)
1258    o pkg/kpp: add code to have mixing in shelf ice caverns
1259      - add myThid to all kpp routines (long overdue)
1260    
1261    checkpoint59
1262    o pkg/exf:
1263      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
1264        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
1265      - move exf header files from lower_case.h to UPPER_CASE.h ;
1266        add missing cvs Header & Name
1267      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
1268      - add namelist param. selectStressGridPosition, exf_monFreq
1269      - retire many _CLIM routines, and remove data.exf_clim
1270        + params moved to data.exf
1271        + climsst, climsss now handled by exf_set_gen, i.e.
1272          climss?period=0 refers to constant field,
1273          climss?period=-12 to monthly forcing
1274      - split up namelists in data.exf
1275    o pkg/seaice:
1276      - remove seaice_exch and seaice_exch_uv
1277      - remove superfluous exchange of theta
1278      - add myThid to seaice_budget_ocean/ice
1279      - add new interface for atmospheric wind forcing (C-grid only)
1280        + new routine
1281        + two new field (taux, tauy for stress over ice)
1282        + removed one global field (DAIRN) for C-grid case only
1283    o pkg/thsise
1284      - 2nd set of modifs for thsice adjoint in conjunction with exf
1285    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
1286    
1287    checkpoint58y_post
1288    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
1289      vertical diffusivity, similar to that in MOM4; turned on using
1290      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
1291      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
1292    o Added capability for 3D specification of background vertical diffusion
1293      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
1294      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
1295      "data" file that contains the 3D vertical diffusivity coefficients.
1296    o ice dynamics (pkg/seaice) with thsice thermodynamics:
1297      - add code within pkg thsice to advect & diffuse sea-ice fields
1298      similar to (and will replace) what has been added in  seaice_advdiff.F,
1299      but: - conserving Mass, Heat & Salt.
1300           - better when using non-linear advection scheme (not yet fully tested)
1301           - can also be used in atmospheric set-up (for now, only the diffusion).
1302    
1303    checkpoint58x_post
1304    o IO option for global-file compact format:
1305      - add options when generating topology (utils/exch2/matlab-topology-generator)
1306      - add I/O capability (pkg/mdsio).
1307      - adapt utils/matlab/rdmds.m to read this format.
1308      for now long-line format not yet supported by pkg/mdsio (& exch2).
1309    o shelfice: add a few diagnostics
1310    
1311    checkpoint58w_post
1312    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
1313      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
1314      (and replace horiVertRatio in NH code).
1315      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
1316                         and tutorial_plume_on_slope (sensitive to truncation)
1317    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
1318      directly to drive seaice model (C-grid only)
1319    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
1320     - reintroduce computation of wind from stress,
1321     - compute tau (in exf_bulkformulae.F) from windstress averaged to
1322       mass points to avoid tau = 0
1323     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
1324    o rdmnc.m: make it work with "global" files created with gluemnc
1325    o rdmnc.m : some improvements in dealing with singleton dimension
1326      (tested on all testreport mnc output files).
1327    o genmake2: disable pkg/profiles if netcdf test fails.
1328    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
1329    o move call to cal_readparms up to make calendar parameters/variable available
1330      to all packages
1331    
1332    checkpoint58v_post
1333    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
1334      useDynP_inEos_Zc tested.
1335    o pkg/exf: changes to properly interpolate/mask/scale initial fields
1336    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
1337      and portions thereof.  See read_cs.txt for description and examples.
1338    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
1339      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
1340      following the great-circle arc between those 2 points.
1341    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
1342      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
1343    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
1344     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
1345     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
1346     - still needs work (not working with some options ; efficiency to improve)
1347       and serious testing.
1348     - use this scheme for temperature & salinity in 2 advection test exp.:
1349       advect_xy & advect_xz, respectively.
1350    
1351    checkpoint58u_post
1352    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
1353    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
1354    o testreport: add option "-skipdir" to skip some test.
1355    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
1356      momentum calculation.
1357    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
1358    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
1359      remove checkpoint.F and the_correction_step.F (no longer used);
1360      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
1361    o add option (linFSConserveTr) to correct for tracer source/sink due to
1362      Linear Free surface
1363    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
1364    o pkg/thsice: fix reading mnc-pickups
1365    
1366    checkpoint58t_post
1367    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
1368    o pkg/mdsio:
1369     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
1370       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
1371       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
1372     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
1373     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
1374       either MDS_READ_FIELD or MDS_WRITE_FIELD )
1375     - new S/R (to replace MDSWRITEMETA), which allows to write more
1376       informations (variable names, time ...) to meta files.
1377     - modify rdmds.m to give back the meta file content.
1378    o pkg/diagnostics: change vertical interpolation to be safer, and more
1379       flexible (define p-levels to interpolate to in data.diagnostics);
1380      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
1381       diagnostic pointer.
1382    o pkg/seaice: more cleaning up of seaice_growth, added many comments
1383    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
1384    o fix multi-category seaice:
1385     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
1386       SEAICE_MULTICATEGORY
1387     - fix short wave heat flux
1388    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
1389       and allow to use EVP solver. Change forward lab_sea: test both EVP
1390       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
1391    o Initial check-in of lab_sea adjoint
1392      (very similar to natl_box_adjoint/code_seaice)
1393      * used C-grid and EVP solver
1394      * used KPP, GM/Redi
1395      * uses inAdExact=.TRUE.
1396      * gradient checks fail for both ADM and TLM
1397        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
1398        f.d. gradients actually seem more problematic than ADM, TLM gradients;
1399        issue is related to forward mismatch between g77 an ifort
1400    o pkg/seaice: overhaul of thermodynamics
1401     - growth.F and groatb.F are replaced by new routine seaice_growth.F
1402     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
1403     - move a few global fields out of SEAICE.h into seaice_growth.F and
1404       make them 2D (FICE/QNETO/ ...)
1405     - remove FO (it is the same as QNETO)
1406     - introduce a few local fields to avoid modifying external fields such
1407       as atemp, etc.
1408    
1409    checkpoint58s_post
1410    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
1411      changed exf_set_gen.F so that
1412        genperiod=0 means input file is one time-constant field and
1413        genperiod=-12 means input file contains 12 monthly means
1414    o CG2D: use pre-computed solver main-diagonal (stored in common block);
1415      this affects truncation error ; generate new output file for exp. which
1416      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
1417        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
1418        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
1419        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
1420        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
1421        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
1422    o start implementation of deep-atmosphere and anelastic formulation
1423    o verification: remove 2nd copy of input files and use script "prepare_run"
1424      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
1425    o mom_common/vecinv/fluxform: fix a few initialisation isssues
1426    o profiles: fix for multithreaded case
1427    
1428    o diagnostics: rename few diags:
1429      s/'PRESSURE'/'RCENTER '/g
1430      s/'TICE    '/'oceFreez'/g
1431      s/'TAUX    '/'oceTAUX '/g
1432      s/'TAUY    '/'oceTAUY '/g
1433      s/'SWFLUX  '/'oceQsw  '/g
1434      s/DIFx/DFxE/g
1435      s/DIFy/DFyE/g
1436      and add few ocean-forcing diagnostics:
1437      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
1438    o modifications to pkg/seaice/growth.F and budget.F, which change results of
1439      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
1440      as actual snow thickness.  It now refers everywhere to effective snow
1441      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
1442    
1443    checkpoint58r_post
1444    o modifications to pkg/seaice/growth.F, which change results of
1445      lab_sea experiment: fixes pertain to melting snow over open water, to
1446      masking EVAP under sea ice, and to using the correct AREA variable for
1447      computations of EVAP, PRECIP, HSNOW, and GHEFF
1448    o add ability to read bathy, salt, and theta using MNC (off by def)
1449    o add flooding algorithm and advection of HSNOW for pkg/seaice;
1450      both are turned off by default and do no change any results
1451    o seaice advection with pkg/thsice: a step toward the use of non-linear
1452      advection scheme, but #ifdef or commented out for now (requires more EXCH).
1453    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
1454      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
1455      in natl_box (affects results @ truncation level: update output.txt)
1456    o multi-threading and IO:
1457      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
1458      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
1459        (needed to work with SingleCpuIO): tested in all verif. exp.
1460    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
1461      affects the results (but none of the verification test uses this scheme).
1462    o Adding some pkg/diagnostics capability to pkg/seaice
1463      (will certainly be subject to changes)
1464    o ctrl: adding new control variables:
1465      lwflux, lwdown, evap, snowprecip, apressure, runoff
1466    
1467    checkpoint58q_post
1468    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
1469      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
1470      high_res_cube configuration by 4% on Columbia.
1471    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
1472      add (in global_with_exf/code) a version of EXF_INTERP_READ without
1473      dynamical allocation (seems to work in multi-threaded).
1474    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
1475      single CPU io) so that TAF does not have to see EESUPPORT.h
1476    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
1477    
1478    checkpoint58p_post
1479    o obcs: stop if obcs is used with useCDscheme = .true.
1480    o shelfice:
1481     - fix a sign error so that no slip at shelfice interface works
1482     - remove stop for combination non-hydrostatic code and shelfice. That does
1483       not mean, that the results are correct, but at least they are numerically
1484       stable
1485    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
1486    o added adjoint exch routined for all exch*3d* routines
1487      and updated flow directives
1488    
1489    checkpoint58o_post
1490    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
1491      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
1492    o change controling S/R for writing pickup file (new S/R do_write_pickup)
1493      and clean-up reading/writing of pickup files.
1494    o fix local version of read/write pickup (NH part) in rotating_tank/code
1495    o simplify EXCH interface:
1496     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
1497     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
1498    o added the regrid package
1499    o shelfice:
1500     - add a simple boundary layer scheme to reduce noise
1501     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
1502    
1503    checkpoint58n_post
1504    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
1505       local variable (not in common block).
1506    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
1507      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
1508      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
1509        to work with SingleCpuIO.
1510    o add "_d 0" to real constant of pkg/cfc subroutines ;
1511       update exp. cfc_exemple & tutorial_cfc_offline output files.
1512    o multi-threading and IO:
1513      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
1514        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
1515      - barrier before and after reading.
1516      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
1517      - avoid using MDS_WRITELOCAL for LAND pkg output.
1518      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
1519        common-block variables ; Allows multi-threading with master-thread IO.
1520    o change default MAX_NO_THREADS from 32 to 4 ;
1521      and stop cleanly when MAX_NO_THREADS is too small.
1522    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
1523    
1524    checkpoint58m_post
1525    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1526       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1527    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1528       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1529       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1530    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1531        add MITgcm_tutorials (= code + all the tutorials)
1532    o ecco, option to compute cost for total ssh (mean+anom)
1533    o consistent with addition of ptracer and ssh in pkg/profiles
1534    o profiles: adding ptracer and ssh
1535    o testreport: change multi-test output-file name
1536      (from output.txt.{name} to output.{name}.txt)
1537    o profiles: now ok for mutli-tiles case
1538    o seaice: add 4 parameters for different advection schemes for area,
1539      (effective) seaice thickness, enthalphy, and snow height. Their default
1540      is the standard parameter SEAICEadvScheme
1541    o calc_gw:
1542     - add cosFacU in zonal viscous flux (harmonic.visc.).
1543     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1544       of tutorial_plume_on_slope.
1545    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1546    o calc_gw: true flux-form, account for horizontal grid spacing.
1547      update rotating_tank results, but not plume_on_slope (affected at
1548      truncation level, 11 digits).
1549    
1550    checkpoint58l_post
1551    o calc_gw:
1552     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1553     - remove side-drag for now (need to fix it); update plume_on_slope results.
1554     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1555    o commit code to make SST/SSS weights spatially variable
1556      (based on either variable in-situ or variable initial T/S weights)
1557    o pkg/ecco:
1558      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1559        now based on horizontally varying weights wthetaLev, wsaltLev
1560      * cost_averagesflags now returns year indices in addition to day, month
1561      * sflux balance is performed on annual basis
1562        (sflxumm, sfluxmm2, bal_sfluxmm)
1563      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1564        including separate counting and multipliers
1565    o pkg/rbcs
1566      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1567    
1568    checkpoint58k_post
1569    o testreport:
1570     - always build in dir. "build" (if not there, mkdir build instead of building
1571       & running in input)
1572     - run in dir run (if it exists), in build otherwise.
1573     - call prepare_run (if input/prepare_run exists)
1574     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1575    o pkg/exf modifications to interpolation and rotation routines for more
1576       reasonable treatment of North Pole singularity: for tracers North Pole
1577       value is set to northernmost zonal-mean value, for zonal velocity it is
1578       set to zero, and for meridional velocity it is set to northernmost value.
1579    o pkg/exf/exf_check_range.F
1580     - add tile index to diagnostics and move stop statement to the very
1581       end of the routine.
1582    o pkg/diagnostics: (diagnostics_main_init.F)
1583      define title of isomorphic variables according to the current config.
1584    o pkg/thsice with pkg/seaice dynamics:
1585    - fix domain of computation (interior only, required for exf) and do exchanges
1586    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1587    o towards a standard way of dealing with multi-threading in MONITOR
1588      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1589    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1590       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1591    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1592    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1593    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1594       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1595    o tracer advection:
1596     - clean-up and simplify calc_common_factors.F
1597     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1598       advection subroutine (but still not used within DST advection S/R)
1599    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1600    
1601    checkpoint58j_post
1602    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1603      from file (collects calls previously in FORWARD_STEP)
1604    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1605    o adjoint store dir. adjusted accordingly
1606    o genmake2
1607      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1608    
1609    checkpoint58i_post
1610    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1611      on wind stress (SEAICEstressFactor defaults to 1.)
1612    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1613      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1614    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1615      on CS-grid: no longer loosing mass.
1616    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1617    o pkg/ggl90: fix sloppy output and fix a bug
1618    o pkg/seaice: added SEAICEuseEVPpickup parameter
1619      - Set to false in order to start EVP solver with
1620        non-EVP pickup files when using SEAICEuseEVP
1621      - fix sign error in diffusion in seaice_calc_rhs
1622    
1623    checkpoint58h_post
1624    * Modifications for bottom topography control
1625      o replace hFacC by _hFacC at various places
1626      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1627      o add non-self-adjoint cg2d_nsa
1628      o update autodiff support routines
1629      o re-initialise hfac after ctrl_depth_ini
1630      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1631    * Adding verification for 5x5 box (4-layer) bottom topography control
1632    
1633    checkpoint58g_post
1634    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1635       used for mean seasonal cycle, mean diurnal cycle); add an example
1636       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1637    o pkg/ggl90:
1638      - add parameter (minimum surface kinetic energy)
1639      - fix bug (avoiding division by zero)
1640    o couple pkg/thsice to pkg/seaice:
1641      - modify advection in seaice to accomodate new scalar fields to be advected
1642      - only muliDimAdection scheme work with seaice/thsice
1643      - mapping of thsice-variables to seaice-variables, back and forth
1644      - does not break the verification experiments, but does not give the
1645        desired results either
1646    o pkg/seaice
1647      - make (default) second order advection a bit less confusing?
1648    
1649    checkpoint58f_post
1650    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1651      to pkg/seaice):
1652      - new routines thsice_map_exf and thsice_get_exf provide the interface
1653      - add an additional formal parameter to thsice_solve4temp
1654    o pkg/exf:
1655      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1656      - correct Stefan-Boltzmann constant
1657      - new parameter for longwave surface emittance
1658      - separate some stuff from exf_bulkformulae into new routines  
1659        exf_radiation, exf_wind
1660      - add new parameters and constants: longwave emissivity for ocean, ice
1661        and snow, evaporation parameters over ice
1662      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1663        either wind from stress or stress from wind
1664    o pkg/thSIce:
1665    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1666    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1667       and THSICE_CALC_THICKN
1668    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1669    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1670      to make debugging easier.
1671    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1672    o pkg/bulk_force:
1673      - clean-up comments and parameters ;
1674      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1675    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1676      generate new output for test-experiment: aim.5l_cs.thSI
1677    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1678      testreport accordingly
1679    
1680    checkpoint58e_post
1681    o SEAICE_CGRID adjoint done
1682    o R_STAR adjoint implemented.
1683      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1684      * need to sort out init. of h0facc, etc.
1685    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1686      to be able to use it in pure forward.
1687    
1688    checkpoint58d_post
1689    o upgrade simple test-experiment to tutorial example:
1690     step.1: duplicate the experiment and (step.2) will remove the old copy.
1691      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1692      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1693      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1694      tutorial_global_oce_biogeo    <- copy of dic_example
1695      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1696      tutorial_plume_on_slope       <- copy of plume_on_slope
1697      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1698      tutorial_global_oce_optim     <- empty for now (David ?)
1699      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1700     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1701    o correct a sign problem in cost_scat.F
1702    o obcs and ptracers: fix boundary conditions for advections schemes
1703      with larger stencil
1704    o thsice adjoint: start
1705    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1706      completeness
1707    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1708      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1709    o ptracers adjoint:
1710      * avoid extensive recomputatations
1711      * fix missing re-init. of gptr (missed by TAF)
1712    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1713      me to turn off the excessive output to STDOUT that this package produces
1714    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1715      and add those terms in Vector-Invariant formulation.
1716    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1717      if the control period (xx_hfluxperiod etc) is 0
1718    o in profiles pkg, clean routines and fix details
1719    o in ecco pkg, reading ssh data:
1720      fix problem in case the model does not start at iter0=0
1721    o fix mnc-pickup/restart for ptracers
1722    o new package prifiles:
1723      code to compute profile-based cost by Gael Forget
1724      (modifs in ecco, ctrl, autodiff)
1725    o Benign bug fix in initialization (spotted by M. Mazloff) of
1726      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1727    
1728    checkpoint58c_post
1729    o adjoint: finish NLFS adjoint and provide reference output in
1730      verification/global_ocean.90x40x15/results_ad_nlfs
1731    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1732      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1733      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1734      with SEAICE_CGRID defined.
1735    o move calendarDumps from "data" to "data.cal" and clean-up the code
1736      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1737    o add useEXF & useCAL flags (for now, set in hard-coded way)
1738    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1739      (were missing in NH mode, and wrong in quasihydrostatic mode).
1740      waiting for Chris updated version of calc_gw to add those CALLs.
1741    o fix bug in quasihydrostatic S/R ;
1742      add a test for this option: global_ocean.90x40x15.qshyd
1743    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1744      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1745    o add on/off flag useOffLine for package OFFLINE
1746    o seaice:
1747      - modify advection so that it works also on the C-grid
1748      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1749        problem in multi-tile runs with C-grid
1750      - add flags for clipping ice velocities and/or masking solver forcing
1751      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1752        C-grid solver
1753      - added a few comments to seaice_diffusion.F
1754      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1755        are now exclusive)
1756      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1757        required re-ordering the code a little:
1758       + make DAIRN global variable (defined in SEAICE)
1759       + move computation of the viscosities eta and zeta into a new separate
1760         routine (because I need to recompute them in seaice_ocean_stress.F)
1761    
1762    checkpoint58b_post
1763    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1764      update output.txt of exp. aim.5l_cs.thSI
1765    o various mnc cleanups and improvements:
1766      + shrink lookup tables by factor of ~4
1767      + better error reporting when running out of lookup space
1768      + able to handle longer path/file names (up to 500 chars)
1769    o adjoint:
1770      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1771      - TBD: "hidden" mom_vecinv recomp. in dynamics
1772    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1773     (allow to differentiate between forcing components using new integer flags:
1774      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1775     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1776    o ecco
1777      - enable trend removal from SSH anomaly obs.
1778    o adjoint
1779      - a fix for PmEpR when #undef EXACT_CONSERV
1780      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1781      - try to fix "hidden" recomp. in forward_step for NLFS
1782        (NLFS seems broken sometimes after I checked it in)
1783    o seaice:
1784     - add c-grid version of the dynamic solver:
1785       + three new routines that are the c-grid substitute lsr, dynsolver
1786         and ostres
1787       + put a few fields that were local to dynsolver into global common
1788         blocks, so that I can move the computation of stresses etc into
1789         seaice_lsr (saves coding but may break the adjoint).
1790     - replace more hardwired parameters by runtime parameters
1791     - add ice masks that mask the rhs of the implicit solvers where there
1792       is no ice (commented out in seaice_dynsolver, because i am not sure
1793       if this works properly), eventually this should replace the clipping
1794       of ice velocities in seaice_dynsolver to +/-40cm/s.
1795    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1796      include it only where its needed
1797    o move balancing of fluxes before the call of external_forcing_surf
1798    o seaice:
1799      - correct units of turning angles (now they are really in degrees)
1800      - move computation of GWATX/Y out of main routine into dynsolver
1801      - initialize GWATX/Y in seaice_init
1802    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1803      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1804    o seaice: add runtime flags for turning angles (default to zero)
1805    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1806      and trend from exf forcing and ctrl control adjustments
1807    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1808      (since checkpoint57x_post)
1809    o change the default rotation period to 86164.s = the Earth rotation
1810    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1811      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1812    o seaice advection: add code for choosing between the default (2nd order
1813      central differences) and multiDim advection schemes provided by
1814      pkg/generic_advdiff
1815    o seaice:
1816      - removed all references to SEAICE_GRID.h fields from
1817        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1818        (cubed-sphere configuration will change a little)
1819      - grid computations in seaice_init are obsolete now.
1820      - cleaned up code a little so that is easier to read (hopefully).
1821      - added new (better?) discretizations of default advection and diffusion
1822        (turn on with SEAICEuseFluxForm)
1823      - replace 1 in 3d global fields by kSurface in growth.F
1824      
1825    checkpoint58a_post
1826    o seaice:
1827      - bug fix in advect.F
1828    o shelfice:
1829      - separate shelfice load anomaly from pload (breaks with time
1830        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1831        Its default is 0., but it may be computed more cleverly from (unknown)
1832        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1833        done offline. A good approximation of the pressure load anomaly is
1834        necessary to avoid large initial adjustment processes underneath
1835        deep-reaching shelfice.
1836      - small fix in ISOMIP shelfice_thermodynamics
1837      - add more sophisticated thermodynamics of Hellmer (1989), this is
1838        now the default
1839      - give a few constants more intuitive names
1840    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1841      if bulk formulae are used in long integration (especially EmPmR). Turn
1842      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1843      if balancePrintMean, the imbalance that is substracted is printed to
1844      STDOUT.
1845    o fix bug (typo) in obcs_apply_eta.F
1846    o add a new package shelfice which enables us to model the circulation
1847      underneath shelf-ice with draughts of hundreds of meters.
1848     - works
1849     - to do: + include improved thermodynamics
1850              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1851                instead of new field kTopC
1852              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1853                instead of new field R_shelfIce and new code in ini_depth.F
1854                and ini_mask_etc.F?
1855              + adjust vertical mixing schemes?
1856    o seaice pkg:
1857     - add a cpp-flag to include a simple formula for a salinity dependent
1858       freezing point of sea water at the surface
1859     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1860       meridional stresses are now different (and hopefully correct)
1861    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1862       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1863       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1864    o pkg/diagnostics: add options and parameters for regional-statistics
1865       diagnostics ; define regions by reading a region-mask from a file
1866       (might add other options later)
1867    o pkg/bulk_force:
1868     - add option and parameters to use AIM surface-flux formulae.
1869     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1870       others forcing fields (defined in PARM05, parameter file "data") are loaded
1871       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1872     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1873     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1874     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1875       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1876     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1877    
1878    checkpoint58
1879    o add "--embed-source" option to genmake2 which, when the supporting
1880      tools can be compiled (as determined by genmake2) will turn on the
1881      embed_files package which then embeds the entire MITgcm source code
1882      (*.[fFhc] + Makefile) used for the build within the executable
1883      - requested by CNH but off by default
1884      - adds a paltry <9MB to the mitgcmuv executable in most cases
1885      - only writes the output when useEMBEDSRC in eedata is true
1886    o clean up 3-dim. relaxation codes:
1887      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1888      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1889      * Thanks to Tom Haine for testing!
1890    
1891    checkpoint57z_post
1892    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1893      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1894    o fix the pickup behavior for obcs in combination with ptracers
1895    o fix a bug in ptracers_external_fields_load
1896    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1897      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1898    o transfered surface NH pressure to eta field (if exactConserv).
1899    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1900         and update lab_sea output.txt file.
1901    o completing 3-dim. relaxation code: additional term
1902         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1903      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1904      * At compile time, in "EXF_OPTIONS.h" set
1905          #define  ALLOW_CLIMTEMP_RELAXATION
1906          #define  ALLOW_CLIMSALT_RELAXATION
1907      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1908          tauThetaClimRelax3Dim = 15552000.0,
1909          tauSaltClimRelax3Dim  = 15552000.0,
1910      * 3 cases:
1911          1) Use a constant-in-time 3-dim. field
1912          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1913          3) Real-time relax. to time-evolving prescribed field
1914    o Adding Laplacian-type smoothness constraint on
1915      initial and boundary (forcing) controls (ic, bc)
1916      * enable at compile-time via
1917        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1918      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1919      * Absolute scale somewhat unclear so far
1920      * no area weighting was included since no other cost term does so far
1921    
1922    checkpoint57y_post
1923    First step for a NLFS adjoint
1924    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1925    o new init. routines for calc_r_star, calc_surf_dr
1926    o still need to deal with ini_masks_etc
1927    o testreport seemed happy
1928    checkpoint57y_pre
1929    
1930    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1931    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1932    o add new offset feature to offline pkg (plus minor cleanup)
1933    o cfc fixes for final year of integration
1934    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1935      be in GCHEM_OPTIONS).
1936    
1937    checkpoint57x_post
1938    o fix testreport Pb in multiple test experiment.
1939    o cleanup our namelist syntax in verification:
1940      - make it more F95 standards compliant (some work still needed)
1941      - allows the vast majority of our tests to work with gfortran
1942    o Non-Hydrostatic:
1943     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1944     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1945    o Allow to apply AB on T,S rather than on AB(gT,gS):
1946     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1947     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1948       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1949     - need a "clever" read_pickup to restart from the other AB formulation
1950    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1951    o remove some unused variables (reduces number of compiler warnings)
1952    o adjoint
1953      * Disable useVariableViscosity for adjoint for time being
1954        (there are a number of extensive recomputations)
1955      * Initialize certain variables needed for adjoint
1956    
1957    checkpoint57w_post
1958    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1959                 fix the singleCpuIO RS version of MDSWRITEFIELD
1960       and add a WARNING if using globalFiles=T with multi-processors.
1961    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1962      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1963    o tracer advection scheme:
1964      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1965       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1966       was not very convenient).
1967      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1968       (further tests needed for the implicit DST & Flux-Limiter schemes).
1969    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1970      and sRef for convenience, handy, when you want to initialize
1971      ptracers in a large domain with a constant non-zero value. Also,
1972      untangle ptracers_init.F a little.
1973    
1974    checkpoint57v_post
1975    o change dome exp. to use variable viscosity in side-drag terms.
1976    o remove all the files from the cfc_offline test since they are now
1977      incorporated into tutorial_cfc_offline which has been producing
1978      identical results for a few days of testing
1979    o add new parameter: sideDragFactor to enable half-slip-side BC
1980      and change side-drag S/R to use viscosity from mom_calc_visc
1981      (can switch back by setting sideDragFactor=0.); affects results at
1982      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1983       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1984    o vorticity & strain are now computed without masking, to account for
1985      no-slip-side BC in variable viscosity calculation ; mask is applied
1986      anyway later on, before computing advection/coriolis terms.
1987    o modify exp4 to test new obcs support for reading from external files
1988      and for passive tracers
1989    o fix behavior of ptracers_monitor when monitor output is written to a
1990      netcdf-file; still not independent of monitor.F (writes in the same
1991      file).
1992    o change default value of tRef (put a uniform, meaningful value for ocean
1993      & atmos) and initialize sRef (was missing, as Martin mentioned).
1994    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1995      to be proportional to enstrophy dissipation length.  Thus,
1996       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1997      This is now consistent with Smagorinsky and with the manual.
1998    
1999    checkpoint57u_post
2000    o OBCS and PTRACERS: add open boundary support for passive tracers
2001      - either use homogenous (pseudo) v.Neumann conditions or prescribe
2002        OB-values from file; this is not different from the way theta and salinity
2003        are treated
2004      - however, Orlanski-radiation conditions are not supported, and the model
2005        will stop if you use pTracers and Orlanski at the same time.
2006      - beefed up the rountine obcs_external_fields_load: now only those open
2007        boundary values are overwritten with values from files for which there
2008        are really files, otherwise the OB-fields remain untouched. This makes
2009        it possible to use different OBs at different ends of the domain (as
2010        with EXF)
2011    o reduce number of exch calls in shap_filt (s2).
2012    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
2013      truncation level) 4/5 MLAdjust test results (11&12 digits match).
2014    
2015    checkpoint57t_post
2016    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
2017    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
2018      same truncation, independent of the face number: affects affects several
2019      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
2020    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
2021      note that biharmonic viscosity + no-slip was not tested in any experiment.
2022    o fix bug in non-linear free-surf side-drag ; generate new output for
2023      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
2024    o make mnc honor the writeBinaryPrec flag for most kinds of output
2025    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
2026    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
2027      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
2028    o add brackets in multi-terms sum to get same truncation, independent of
2029      the face number (manage to get exactly same value of gU,gV at the cs-edge)
2030      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
2031    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
2032      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
2033      a maximum grid-scale Reynolds number.  Also, changes all length calculations
2034      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
2035      Suggested values of viscosity parameters found in mom_calc_visc.
2036      Many new viscosity diagnostics available.
2037    
2038    checkpoint57s_post
2039    o Add clearing-house for viscosity calculations, mom_calc_visc and
2040      correct numerous bugs in LeithD and Smagorinsky discretizations.  
2041      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
2042      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
2043      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
2044      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
2045      The Strain-Tension form is now called with useStrainTensonVisc=.true.
2046      ViscAhStrain and viscAhTension are now retired.
2047    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
2048    o In response to JMC's bug report, genmake2 now ignores any soft-links
2049      that it finds in the *current* directory when searching for files.
2050      Soft-links found in any other source directories will still work as
2051      they did before.
2052    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
2053      a C routine to unlimit the stack size
2054    o mnc-ify pkg/aim snapshot vars
2055    o mnc-ify pkg/land as requested by Daniel
2056    o various changes to mnc including:
2057      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
2058      - output can now be grouped so that all files within a group
2059          change the ITER portion of their names in lock-step together
2060      - can now read ("global") PER-FACE (in addition to PER-TILE) files
2061          and works with both EXCH1 and EXCH2 (but needs more testing)
2062      - writing works for all verification test cases w/ g77 on Linux
2063    
2064    checkpoint57r_post
2065    o make MNC variable initialization happen earlier
2066    o add diagnostics for (almost) each term of the momentum Eq.
2067    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
2068    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
2069    o remove MINIMAL_TAVE_OUTPUT option ;
2070      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
2071    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
2072      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
2073    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
2074    o add time-dependent SST, SSS control
2075    o cost terms in ecco/ modularized (new cost_generic.F)
2076    o cost_averages routines are modularized (new cost_averagesgeneric.F)
2077    o new infrastructure for seaice model vs. obs misfits in seaice/
2078      * driver from the_main_loop.F is seaice_cost_driver.F
2079      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
2080      * gradient check in Exp. 6a of natl_box_adjoint/
2081    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
2082      (see README file)
2083    
2084    checkpoint57q_post
2085    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
2086    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
2087      - bug was reported by Jean-Michel and Ian Fenty
2088    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
2089      update exp. cpl_aim+ocn output.
2090    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
2091      Needed for high-res. runs with large global files
2092      to be able to limit tapelev size
2093    o Changed some tests for adjoint:
2094      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
2095      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
2096      * global_ocean.90x40x15/ back to default 3-level checkpointing
2097    o Modifications to enable scripted COMMON to MODULE conversion
2098      * verification/OpenAD/code/ has necessary scripts and description;
2099      * converts, compiles and runs successfully;
2100    
2101    checkpoint57p_post
2102    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
2103    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
2104      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
2105    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
2106    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
2107      (was already the case for dissipation with mom_vecinv,
2108       and also the case for grad.PhiHyd when staggered-timeStep)
2109      This will allow to put dissipation out-off the AB time-stepping.
2110     Unfortunately, affects truncation error. Update output of exp. that "fails"
2111      (cg2d matching number) and leave the others for later: front_relax(10),
2112      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
2113      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
2114    
2115    checkpoint57o_post
2116    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
2117      (2) its ready to be documented during the 20050801 DocFest
2118    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
2119      for ideal_2D_oce and lab_sea on linux_ia32_g77
2120    o set to #undef CTRL_SET_OLD_MAXCVARS_30
2121      in global1x1_tot/code_seaice_adj to access indices 32, 33
2122      (worth another tag)
2123    
2124    checkpoint57n_post
2125    o adding precip control xx_precip 32
2126    o adding swflux control xx_swflux 33
2127    o Replacing 10 forcing penalty cost routines by 1 generic.
2128    o Implementing partitioning in time-mean and variable adjustment
2129      for atmos. state.
2130    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
2131    o in natl_box_adjoint:
2132      * updated exp 1 to 10
2133        (but does not have time-mean vs. variable split results yet)
2134    o updated global1x1/*_seaice_adj/
2135      to incorporate latest changes
2136    o enable useSingleCpuIO for mdsio vector routines
2137      (applies in particular to tapelev I/O)
2138    o removed inefficient K-loop in all active_file*control*.F
2139    
2140    checkpoint57m_post
2141    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
2142      and advect_cs (use EXCH-2 and standard cs-32 grid files).
2143    o pkg/exch2: filling of face-corner halo regions is optional
2144      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
2145    
2146    checkpoint57l_post
2147     tag before updating tutorials (pre-release-2)
2148    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
2149       for output and interpolation of input fields onto model grid)
2150    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
2151       Affects results of exp. rotating_tank ; update output.txt.
2152    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
2153          and taking the square quantity and/or using a fraction-weight field.
2154    o fix aim_diagnostics_init.F mate numbers.
2155    o add mnc output capability to diagnostics/diagstat and update
2156      our cvsignore files for the ACSII output generated
2157    
2158    checkpoint57k_post
2159    o lab_sea now uses diagnostics package and provides a suite of
2160      new EXF diagnostics output.
2161    
2162    checkpoint57j_post
2163    o exf
2164      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
2165        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
2166        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
2167      * extended diagnostics output
2168        - now includes all EXF variables
2169        - hs, hl moved to common block
2170        - separate S/R for diagnostics, called after ctrl vector is added
2171        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
2172        - EXFqnet contains true Qnet (i.e. includes qsw)
2173      * updated verif. lab_sea, global_with_exf
2174      * Rearranging hflux (exf_mapfields -> exf_getforcing)
2175        to ensure that diagnostics sees a true EXFqnet
2176    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
2177    o diagnostics pkg: change pointers so that 1 diagnostic can be used
2178      several times with different frequencies.
2179    o mnc-ify the thsice package as requested by Daniel Enderton
2180      - the monitor--MNC output needs work
2181      - many attributes need to be added (most are currently blank)
2182    o mnc-ify theaim_v23 package as requested by Daniel Enderton
2183      - many attributes need to be added (most are currently blank)
2184    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
2185    o add Sadourny like discretization to the 4th.O vorticity advection scheme
2186    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
2187      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
2188         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
2189    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
2190     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
2191    
2192    checkpoint57i_post
2193    o Diagnostics package was changed: diagnostic allocation is now deactivated
2194      by setting an empty file name in the namelist (used to be by setting 0 frequency)
2195    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
2196      add 1rst Order upwind vertical Shear.
2197    o add a quick fix for A/B checkpointing in OFFLINE mode
2198    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
2199      end-run around the C/Fortran linking horror in eesup/src/timers.F
2200    o added pkg/runclock: allows user to terminate run based on wall clock
2201    o added non-hydrostatic scaling parameter: nh_am2
2202    o pkg/my82: futile attempt to make results compiler-independent by adding
2203      some "_d 0", etc. no effect.
2204    o for mnc output, fill the 'T' coordinate var with myTime and create a
2205      separate 'iter' variable for iteration count
2206    o pkg/diagnostics:
2207      add new capability: output of Global/Regional & per-level statistics ;
2208      tested against monitor output (including land & thSIce) on various exp.
2209    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
2210    
2211    checkpoint57h_done
2212      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
2213      data.diagnostics, data.gchem, data.ptracers) is done.
2214    
2215    o pkg/diagnostics: prepare for Global/Regional statistics.
2216      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
2217    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
2218      and rename it: DIFFERENT_MULTIPLE
2219    
2220    checkpoint57h_post
2221    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
2222    o pkg/diagnostics: change output frequency, now in seconds (instead
2223      of Nb of iterations). This requires to change data.diagnostics.
2224    checkpoint57h_pre
2225    
2226    o in mnc, let the user create the output dir if both mnc_outdir_date
2227      and mnc_outdir_num are false
2228    o add fflags() to pkg/diagnostics which allows one to specify, on a
2229      per-file basis, the file precision [default behavior is unchanged]
2230    o added diagnostics to pkg/kpp, including computation of mixed layer
2231      depth based on a temperature/density criterion
2232    o updated verification/natl_box to test the new pkg/kpp diagnostics
2233    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
2234    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
2235    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
2236      not mnc -- this mistake was found by JMC and is now corrected
2237    
2238    checkpoint57g_post
2239    o add Adams-Bashforth 3rd Order time stepping:
2240      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
2241      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
2242    checkpoint57g_pre
2243    
2244    o make lambda[Theta,Salt]ClimRelax spatially varying
2245      (default remains spatially uniform constant based on tau)
2246    o added new control variables
2247      * init. uVel, vVel, etanN
2248      * lambda[Theta,Salt]ClimRelax
2249    o separate masks used for ctrl_pack/unpack 'from write_grid' output
2250      (suggested by G. Forget)
2251    
2252    checkpoint57f_post
2253    o add parameter "baseTime" = model base time = time at iteration zero
2254      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
2255      account for baseTime shift
2256    o move Coriolis arrays from PARAMS.h to GRID.h
2257    checkpoint57f_pre
2258    
2259    o mnc-ifying the seaice package
2260    o introduced an alternative length scale calculation for use in the limiting
2261      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
2262    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
2263    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
2264      as well as grad(vort3).  Made it compatible with both approximate form
2265      for the cubed sphere and full form of these gradients.  Added flag
2266      useFullLeith to select between approximate and full form.  
2267    o add "d0" in getcon.F to reduce differences between compilers/platforms
2268      update output.txt of exp. fizhi-gridalt-hs
2269    o change port_rand funtion to allow to set the seed.
2270    o fix obscure MNC bug involving conversion between reals and integers
2271      - it caused no problems with certain (eg. gcc, ifc) compilers but the
2272        new version is now more standards-compliant
2273    o adjoint-related modifications
2274      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
2275      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
2276      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
2277    
2278    checkpoint57e_post
2279    o Adding eddy stress controls a la Ferreira et al.
2280    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
2281    
2282    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
2283      update output.txt of exp. fizhi-gridalt-hs
2284    o add more "Z" dimensions and associated coordinate vars to MNC
2285    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
2286    o parameter calendarDumps: when set, approximate months (30-31 days) and years
2287      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
2288      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
2289      months and years.  Requires pkg/cal.
2290    o diagnostics: add pickup functionality
2291      - off by default for backwards compatibility
2292      - current version only uses MDSIO -- MNC will be added
2293    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
2294    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
2295    
2296    checkpoint57d_post
2297    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
2298    o modify verification/ideal_2D_oce so that it tests the creation of mnc
2299      output from the diagnostics package
2300    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
2301    o make genmake2 more portable by using ".$FS" instead of ".f" for more
2302      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
2303    o add coordinate variables to the MNC output from the diagnostics package
2304    o change MNC-flags default value: true when useMNC=TRUE
2305    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
2306      the ability (off by default) to read the grid information using MNC
2307    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
2308    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
2309    o do snap-shot diagnostics at the middle of the time-interval (instead of
2310      at the end).
2311    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
2312      new test for AIM with thSIce + slab-ocean
2313    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
2314    o move state variable diagnostics to the beginning of the time step ;
2315      (note: still needs some work specially for snap-shot diagnostics)
2316      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
2317    
2318    checkpoint57c_post
2319    o Change testing option (-ieee) to get closer agreement between g77 & ifort
2320    o generate new output.txt files on faulks with g77 & the new -ieee option
2321    checkpoint57c_pre
2322    
2323    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
2324      update output.txt of exp. global_ocean.90x40x15
2325    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
2326      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
2327    o add saltFlux(+File) forcing capability with periodicExternalForcing
2328    o allow to use pkg diagnostics for GM-Redi & ThSIce output
2329    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
2330    o improvements for the MNC output from DIAGNOSTICS:
2331      - correct handling of the unlimitied dimension
2332      - all dims now have associated coordinate variables
2333      - variables located at U, V, and Corner ("Z") points are now written
2334        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
2335        *all* data points are output
2336    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
2337    o added pkg/seaice/seaice_monitor.F
2338    o mdsio_readfield.F can now read files visible only to master MPI process.
2339    o pkg/seaice: some test code for ice-modified ocean stress
2340    o exf_getffields interpolation defaults to bilinear for all scalar forcing
2341      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
2342      spurious negative numbers for precipitation and humidity.  Will cause
2343      some small numerical differences for integrations using pkg/exf/exf_interp.F.
2344    o pkg/ctrl/
2345      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
2346        May be enabled via doPackDiag
2347      *  introduce z-scaling of
2348         + gradient (doZscalePack) and
2349         + control (doZscaleUnpack)
2350    o pkg/mdsio/
2351      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
2352      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
2353    
2354    checkpoint57b_post
2355    o simplify options in diagnostics_fill arguments (remove weird combinations)
2356    o fix MNC coordinate variables so that they now contain per-face index
2357      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
2358      general, EXCH2 grids are only aligned to a "local" coordinate system
2359    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
2360    o Implement instantaneous output within pkg diagnostics:
2361      setting a negative frequency in data.diagnostics produces
2362     "snap-shot" output (as opposed to time-average if freq > 0)
2363    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
2364      NOTE: change ptracer diagnostics name: use 2 characters to work with
2365            more than 9 tracers. Add also diagnostics of advect & diffus flux.
2366    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
2367      becomes the coordinate variable for the 'T' dimension
2368    o add CF-style coordinate variables to MNC
2369      - just a first cut:  numbers are meaningless on the cubesphere and
2370        missing along the T axis but otherwise it works!
2371    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
2372    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
2373    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
2374      this is based directly on what the model compute, so that the content of
2375      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
2376    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
2377    o clean up build options files for SunOS, in particular
2378      - remove -traditional from xmakedepend
2379      - change -xarch=v9 to -xarch=native for f77
2380      - restore use of make (not gmake)
2381      - add CC=gcc if using g77
2382    o changes per discussion of AM, JMC, & EH3 today:
2383      - move redundant "grid" variables out of "state" -- in preparation of
2384        creating proper CF-style coordinate variables and in recognition
2385        that any/all grid variables can be easily copied (eg. w/NCO) from
2386        the grid files into any of the other NetCDF files
2387      - *always* output grid variables with MDSIO (this will eventually be
2388        changed)
2389      - output MNC grid file if useMNC is true
2390    o every instance of _END_MASTER() has been found and replaced with
2391      _END_MASTER( myThid ) in order to satisfy certain picky Sun
2392      preprocessors
2393    o re-arrange diagnostics pkg initialisation:
2394     - allow each package to extend the available diagnostics list
2395     - add some checking and fix small problems (multi-threaded, ...)
2396     - new S/R diagnostics_fill (replace fill_diagnostics):
2397       look through the short list of active diag. (instead of the long list)
2398       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
2399    
2400    checkpoint57a_post
2401    o this set of changes restores TAMC compatibility
2402      tested for global_ocean.90x40x15 adjoint on trough
2403      (what a pain)
2404    
2405    checkpoint57a_pre
2406    o some modifs in tools/build_options for sunos
2407    o call ctrl_pack for ctrl at end for optimcycle=0
2408    
2409    checkpoint57
2410    o add horizontal bi-harmonic viscosity for vertical velocity
2411      - new parameter viscA4W (defaults to viscA4)
2412      - affects only non-hydrostatic code
2413      - to be done: no-slip lateral boundary conditions
2414    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
2415    o implement Implicit Vertical advection for pTracers
2416    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
2417      (implemented also for implicit vertical diffusion & advection)
2418    o OBCS: extend application of tracer open boundary conditions
2419      to a strip beyond the boundary of width Olx/Oly
2420    o add call monitor to TAF set of required calls (flow directives)
2421      and include in natl_box_adjoint
2422    o untangle a few ifdefs related to cost, ctrl, autodiff
2423      untangel a few ALLOW_ECCO_OPTIMIZATION
2424    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
2425      (theta2, salt2 in ecco_cost_weights)
2426    
2427    checkpoint56c_post
2428    o OBCS as control variables
2429      - update ctrl_ad_diff.list, obcs_ad_diff.list
2430      - remove balance of obcs controls from default
2431      - fix index bug nobcs in ctrl_init
2432      - fix dummy fields filen in ctrl_pack
2433      - add dummy weights for obcs
2434    o lsopt: comment out fort.94 output
2435    o optim:
2436      - remove unnecessary header files
2437      - adjusted namelists
2438      - add xerbla.F to Makefile
2439    o exf:
2440      - multiple modifications of exf_check_range
2441      - unit change in exf_init_runoff from [m/year] to [m/s]
2442    o mdsio:
2443      - i/o-vector change debugLevel from debLevA to debLevB
2444    
2445    checkpoint56b_post
2446    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
2447      is called from DO_THE_MODEL_IO
2448      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
2449      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
2450      - clean up PTRACERS_WRITE_TIMEAVE a little
2451    o add another verification experiment that tests both the cfc-pkg and
2452      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
2453      reactive tendencies treated inline with regular timestepping
2454    o testreport previously did a lousy job of comparing small numbers, so
2455      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
2456      implemented in the little c-progam tmp_cmpnum.c which is embedded in
2457      testreport.
2458    o ptracers_monitor: bug fix for MPI
2459    
2460    checkpoint56a_post
2461    o GCHEM: finish reorganizating the package
2462      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
2463        (introduces another 3D-array for each passive tracer, but only if
2464        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
2465        gchemTendency is not needed because the timestep is done separately)
2466      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
2467      - GCHEM is now---more or less cleanly---separate from PTRACERS
2468      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
2469        so clear to me how that should be done in a general way.
2470    o CFC: improve formatting of output in CFC_ATMOS
2471    o PTRACERS:
2472      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
2473        that ALL experiments with ptracers enable can be checked. This makes
2474        GCHEM_MONITOR obsolete.
2475      - include a runtime parameter PTRACERS_monitorFreq that defaults to
2476        monitorFreq
2477      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
2478    o add PTRACERS (PTR0[1-5]) to testreport output
2479    o exf_check_range:
2480      * default changed to .TRUE.
2481      * will check values for niter0 if debLevA, every timestep if debLevB
2482      * STOP in exf_check_range if 'out of range'
2483      * range chosen generous to allow for potential extema
2484      TBD: a version with stricter range
2485           permitted range would be runtime parameters
2486    o GMredi:
2487      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
2488      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
2489      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
2490    o GCHEM:
2491      - move call to GCHEM_FORCING_SEP, so that it is now called before
2492        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
2493      - introduced a useGCHEM runtime flag and applied it everywhere.
2494      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
2495        this flag is now only visible within GCHEM-pkg routines.
2496      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
2497        be replaced by a 3D array that is computed before thermodynamics; for
2498        this, the tracer ID iTracer had to be included into the parameter list
2499        of ptracers_forcing
2500      - set up forward_step to call gchem_forcing, that will replace
2501        gchem_forcing_int in ptracers_forcing
2502      - cleaning up
2503    o small cleaning of exch2: remove files that are also in eesupp/src
2504    
2505    checkpoint56
2506    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
2507    o mnc: cleanup "full" files--fixes out-of-memory problem
2508    o ECCO-GODAE
2509      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
2510      * fully merged and updated from SIO code
2511        windstress sign change affects
2512        - exf_inscal_[u/v]stress
2513        - sign of xx_tau[u/v] adjustments
2514        - signs in cost_scat
2515      * ctrl_get_gen: avoid update of tau[u/v] for first few days
2516      * natl_box_adjoint updated and compressed
2517      * 2-level checkpoint switch added
2518        (tested in EXP. 1 of natl_box_adjoint)
2519      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
2520    o SVD
2521      * first complete, non-hacked version for SVD calculations
2522      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
2523        performed via direct access files admtlm_vector.it????
2524        (via ctrl_[un]pack)
2525      * optimcycle is used for ARPACK iteration counter
2526        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
2527      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
2528        and add linear transforms where necessary
2529      * controls are initial/final SST, SSS (can be extended; need to check
2530        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
2531    o mdsio: filename info to both stderr, stdout
2532    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
2533      from sign change
2534    
2535    checkpoint55j_post
2536    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
2537      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2538    o add consistent build directories and .cvsignore files to verification
2539    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
2540    o make all subroutines 30 or less characters in length for certain older
2541      compilers to work (a thorough search only turns up two routines in
2542      pkg/ptracers)
2543    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
2544      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2545    
2546    checkpoint55i_post
2547    o change arrays for total vertical diffusivity (2.D if explicit,
2548      3.D if implicit) ; each ptracer uses its own background value.
2549    o added mnc/NetCDF output capability to ocn_compon_interf
2550      - added bits to verification/cpl_aim+ocn so that it can run on
2551        ITRDA and other clusters without the mpirun "-wd" option
2552    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
2553      configuration
2554    o give MNC the ability to create additional files rather than
2555      exceeding a specified file size limit "MNC_MAX_FILESIZE"
2556      - the default is just less than 2GB which is a practical limit
2557        on many systems
2558    o Compute the non-local term using either KPP vertical diffusivity (=default)
2559       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
2560    
2561    checkpoint55h_post
2562    o add verification test "vermix"
2563    o remove all the *_ioinc flags and replace with the single global
2564      outputTypesInclusive flag
2565    o allow to set a vertical profile of vertical diffusivity for T & S
2566    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
2567    o useMNC moved from data.mnc to data.pkg
2568    
2569    checkpoint55g_post
2570    o Renaming carbon AD experiments to comply with testreport conventions
2571    o Updating adjoint of Held-Suarez hs94.1x64x5
2572    o Fixing directives for non-ECCO forward_step, after ECCO directives
2573      have been fixed to avoid recomp. of do_oceanic_phys
2574      Works well for global_ocean.90x40x15,
2575      but recomp. issue remains for carbon
2576    o Updating adjoint output for natl_box_adjoint after
2577      pkg/ecco has been modified (see taga c55d_post)
2578    
2579    checkpoint55f_post
2580    o rename to timeave_init_fixed
2581    
2582    checkpoint55e_post
2583    o some delicate re-shuffle of store directives to avoid one
2584      extra call of do_oceanic_physics
2585      affects ecco_the_main_loop.F, do_oceanic_physics.F
2586      checkpoint_lev1_directives.h
2587    o NB: this may break global_ocean adjoint temporarily,
2588      but it is clear how to fix it. Will do later, need this now.
2589    
2590    checkpoint55d_post
2591    o ECCO specific cost function terms (up-to-date with 1x1 runs)
2592    o ecco_cost_weights is modified to 1x1 runs
2593    o modifs to allow observations to be read in as
2594      single file or yearly files
2595    o enable to read exf forcing fields as either
2596      single file or yearly files (flag useExfYearlyFields)
2597    checkpoint55d_pre
2598    
2599    o switch between 2-level and 3-level checkpointing
2600    o add ability of MNC to write local and "partial" (eg. 2D slices where
2601      the full 3D field is never actually stored) arrays to NetCDF files
2602      with the correct (that is, the complete multi-dimensional) set of
2603      array indicies
2604      - used in mom_vecinv() to write the diagFreq output
2605      - tested (demonstrated) in verification/aim.5l_cs
2606    o further mnc-ification
2607      - add verification/lab_sea to the list with mnc setups
2608      - fix undefined mnc v-names in cd_code
2609      - add kpp to mnc output (both snapshot and timeave)
2610    o non-hydrostatic code
2611      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
2612        in calc_gw.F
2613      - defaults to viscAh
2614      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
2615        friction or Leith) in non-hydrostatic mode, as long as there is
2616        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
2617    o pkg/cost
2618      extend simple cost functions to treat time mean quantities
2619      (T,U,V) via cost_accumulate_state from cost_tile
2620    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
2621        be 2 times larger than the minimum size the advection scheme requires.
2622        now get a perfect conservation of salt in advect_cs test-exp (updated)
2623    o GGL90 (Gaspar's TKE mixed layer)
2624      - add horizontal diffusion of TKE, requires exchanges in
2625        do_fields_blocking_exchanges, horizontal diffusivity is zero by
2626        default. In OPA there is no horizontal diffusion of TKE but the
2627        mixing coefficients are computed from a horizontal average of TKE of
2628        6 points or so. I think that diffusion has a little more physical
2629        justification.
2630      - clean up ggl90_calc in the hope of reducing memory usage (this hope
2631        was in vain)
2632      - mask tke-variable in ggl90_init
2633    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
2634    o fix biharmonic diffusion on CS-grid.
2635    o more obcs stuff
2636      - added obcs_external_fields_load as an alternative to the EXF-pkg option
2637        for reading boundary values. This routine is called from
2638        obcs_prescribe_read
2639      - updated obcs_check
2640      - changed sponge layer relaxation parameter units for days to seconds
2641      - turned off sponge layer by default
2642      - changed argument list of OBCS_CALC to myTime+deltaTclock
2643      - fixed about 35 bugs in obcs_external_fields_load
2644    
2645    checkpoint55c_post
2646    o obcs stuff
2647      - new runtime flags useOBCSprescribe, useOBCSbalance
2648      - re-arranged obcs_calc
2649      - moved exf_getobcs to obcs_prescibe_read
2650        obcs_prescibe_read is called after ORLANSKI stuff
2651        and independent of it (executable can contain all).
2652      - updated obcs_check
2653      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
2654        These may be necessary only if tangential velocities are
2655        prescribed at OB, not sure, needs testing.
2656    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
2657      which simplifies the calls and passes the ifc check-bounds test
2658    
2659    checkpoint55b_post
2660    o add a 2D scalar, Z location, exchange_2 routine.
2661    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
2662      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
2663      affects advect_cs results (for the wrong reason): update output.txt
2664    o use a more standard discretization for biharmonic viscosity ;
2665     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
2666      affects results of dome set-up: update output.txt
2667    o fix gad_advection.F (CubedSphere part), back to version 1.23
2668    o fix bug in mom_vi_del2uv.F (CubedSphere part).
2669    
2670    checkpoint55a_post
2671    o merged code to
2672      * prescribe/read time-dependent open boundaries
2673        (works in conjunction with exf, cal)
2674      * sponge layer code for open boundaries
2675      * each boundary N/S/E/W now has its own CPP option
2676        (healthy for the adjoint)
2677    
2678    checkpoint55
2679    o up-to-date adjoint of previous breaks
2680      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
2681      - global_ocean_ebm: adjoint still needs fix (TLM ok)
2682      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
2683      - carbon: * remove tr1-related adjoint verification
2684                * add ptracer as control variable
2685    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
2686      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
2687    
2688    checkpoint54f_post
2689    o in verification/carbin/ remove experiment related to
2690      ALLOW_PASSIVE_TRACER (array tr1 etc)
2691      code_ad/ input_ad/ results_ad
2692    
2693    o add two new packages
2694      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
2695        + subject to optimization (memory)
2696      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
2697        + subject to reordering (many GOTOs in the original code)
2698        + so far opps is called for every (i,j) point, and then operates in
2699          the vertical; one may want to reorder the scheme in order operate in
2700          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
2701          fields)
2702    o overhaul of IO so that we now have flags for MDSIO and/or MNC
2703      - all verification tests compile and run with linux_ia32_g77
2704      - defaults are compatible with current input files--nothing
2705        should change if you were not previously using MNC
2706      - MNC output has been added in numerous places (eg. timeave)
2707        but there are still a few writes not yet do-able with MNC
2708        (this is in progress)
2709      - flags now allow for either/or/both use of MDSIO and MNC and
2710        documentation will soon follow
2711      - numerous small formatting cleanups for ProTeX
2712    o add version info (via BUILD_INFO.h) to MNC and stdout
2713    
2714    checkpoint54e_post
2715    o add two new packages
2716      - pp81 (Packanowski and Philander, 1981), Richardson number and
2717        stratification dependent mixing
2718      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2719      - these scheme operate in a similar manner as KPP (without ghat, of
2720        course), however there is only one diffusivity that is used for both
2721        temperature and salinity (and passive tracers)
2722    o add offline package
2723    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2724      provided by Stephanie Dutkiewicz
2725    o genmake2: add ability to search for C compilers and cleanup test output
2726      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
2727    
2728    checkpoint54d_post
2729    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
2730    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
2731      leading to additional shift by 5 days each year of integration
2732       (i.e. leading to considerable offset over the years)
2733    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
2734    o start with no AB and no initial filtering (staggerTimeStep):
2735      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
2736    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
2737      (external loading & cpl import/export stay in forward_step.F)
2738    o update coupling interface to work with new staggerTimeStep
2739    o change MDSIO ptracers_pickup.
2740    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2741    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2742    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2743    
2744    checkpoint54c_post
2745    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2746      this affects (truncation error) output.txt of test-exp:
2747       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2748    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2749    o change Qnet to always be the net heat flux, (+upward).
2750      affects (truncation error) output of natl_box exp.: updated
2751    o define the max number of passive tracers in PTRACERS_SIZE.h
2752    o start to test mnc routinely in exp0
2753    o add sea-ice loading (sIceLoad) as a new forcing field.
2754    
2755    checkpoint54b_post
2756    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2757       impressive on Altix and Opteron systems)
2758    o diagnostics can now write NetCDF files through the mnc package
2759    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2760    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2761    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2762      affects (truncation error) output of lab_sea & natl_box exp.: updated
2763    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2764    
2765    checkpoint54a_post
2766    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2767    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2768    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2769    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2770      + internal_wave (shift in writing cg2d_ini_res)
2771    checkpoint54a_pre
2772    
2773    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2774      - modified verification/lab_sea and natl_box_adjoint accordingly
2775    
2776    checkpoint54
2777    checkpoint53g_post
2778    o prepare splitting of thermodynamics: store convect.counter in common block
2779    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2780      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2781    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2782    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2783    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2784    o restore adjointability
2785    
2786    checkpoint53f_post
2787    o modifications that affect AIM experiment results (update output.txt):
2788      - no advection of S at top interface Nr (pkg/generic_advdiff)
2789      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2790    o AIM pkg:
2791      - include stability function into surf.Flux derivative relative to Tsurf
2792      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2793    
2794    checkpoint53e_post
2795    o merged cylindrical coord configuration
2796    o added rotating_tank experiment
2797    checkpoint53e_pre
2798    
2799    checkpoint53d_post
2800    o faulks upgraded: re-generate output.txt that have changed:
2801       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2802    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2803    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2804    o added Sadourny discretization of Coriolis
2805      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2806      - re-enabled use of omega3 (useAbsVorticity)
2807    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2808      vector-invariant equations
2809      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2810    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2811      hopefully without new bugs
2812      - still to do: biharmonic friction for non-hydrostatic w
2813    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2814    o regenerated output for global_ocean_ebm (using -ieee)
2815    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2816      of mom_common/
2817      - simple re-arrangement of instructions within computing loop
2818    checkpoint53d_pre
2819    
2820    checkpoint53c_post
2821    o new version of coupler for AIM+thSIce and Ocean models
2822     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2823     - land: change Evaporation of snow
2824     - aim with thSIce: fix bug in snow-precip.
2825    o changes to calc_gw.F
2826     - bug fix for w^2 term near the bottom boundary
2827     - (hopefully) improve the lateral slip boundary condtions for use with
2828        partial/looped cells
2829      - because the bug fix changes two verification experiments anyway (exp5
2830        and plume on slope), change the lateral boundary condition from half slip
2831        to the value of no_slip_sides
2832    o ebm package wasnt quite up to the parallel task. Fixed that.
2833    o Adjoint of EBM package + verification
2834      * TLM OK
2835      * ADM not sufficient accuracy yet (needs further testing)
2836    
2837    checkpoint53b_post
2838    o Commiting new energy balance model to repository
2839      * package is pkg/ebm
2840      * verif. is verification/global_ocean_ebm
2841      * references are in ebm_driver.F
2842    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2843    C        Global thermohaline circulation. Part I:
2844    C        Sensitivity to atmospheric moisture transport.
2845    C        J. Climate 12(1), 71-82
2846    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2847    C        Global thermohaline circulation. Part II:
2848    C        Sensitivity with interactive transport.
2849    C        J. Climate 12(1), 83-91
2850    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2851    C        Destabilization of the thermohaline circulation
2852    C        by atmospheric eddy transports.
2853    C        J. Climate 7(12), 1870-1882
2854    o Will need long integration testing.
2855    checkpoint53b_pre
2856    
2857    o created pkg/mom_common in preparation for variable viscosity code
2858    o renamed and split ini_mnc_io
2859    o pkg/land: only liquid water can diffuse or run-off
2860    o AIM using land: soil wetness availability account for snow
2861    o added printMapIncludesZeros to EEPARMS namelist
2862    
2863    checkpoint53a_post
2864    o restore TAMC compatiility for exf_constants.h
2865      (no usage of _d in .h)
2866    o Additional storing in KPP in an attempt to fix
2867      TAMC problem with adjoint of KPP code.
2868      (no success...)
2869      Identical code works fine with TAF.
2870    o Fixed verification/natl_box_adjoint experiments.
2871      Initial conditions for Experiments 4 and 5 are now
2872      set to "SEAICE_initialHEFF=0", which is more reasonable,
2873      and hence gives results closer to that of Experiment 2.
2874      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2875    
2876    checkpoint53
2877    o stable checkpoint with up to date adjoint
2878      TLM tests only run for 1st grdchk at the moment. Its unclear if
2879      this is a code problem or a problem with resetting code for g_
2880      variables that is being autogenerated wrong.
2881      Otherwise:
2882       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2883       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2884         are both still in chaos following their security messes.
2885    
2886    checkpoint52n_post
2887    o various build (mostly genmake2) changes including:
2888      - ability to build/run more easily within Cygwin and MacOS X
2889      - more complicated Makefiles with a stronger dependence on Gnu Make
2890    o pkg/seaice modifications
2891      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2892        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2893        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2894      - changed proxy for geostrophic velocity and updated
2895        verification/lab_sea/results/* accordingly
2896      - removed ADI dynamic solver from pkg/seaice
2897      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2898        they caused a segmentation fault under certain circumstances
2899      - removed unused field WATR
2900    o bug fix in exf-package:
2901      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2902         now reflect that.
2903    o small fixes in the cal-package:
2904      - set reference date to first of January for the 'model'-calendar
2905      - failing of cal_CheckDate in cal_FullDate now actually results in a
2906        warning
2907    o small modifications in exf-package to increase flexibility:
2908      - change climtempfreeze from a constant to a runtime parameter that
2909        is specified in data.exf_clim (default = -1.9)
2910      - introduce runtime parameter windstressmax (default = 2.0) that is
2911        specified in data.exf
2912    o fix in pkg/thsice:
2913      - update Evap (Tsf changes) to be consistent with Latent heat flux
2914      - maintain snow precipitation unchanged (even if Tsf >=0).
2915     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2916    
2917    checkpoint52m_post
2918    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2919      this does not change any of the results, because myIter=0 in swfrac always
2920      lead to jwtype=2 (the default anyway), but the call makes little sense
2921      as a default
2922    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2923    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2924      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2925    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2926    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2927    o extending useSingleCpuIO option to work with new exch2 I/O format
2928      - old-style, missing-tile I/O is still accessible by defining CPP
2929        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2930    o monitor package can write to NetCDF files and/or STDOUT
2931    o fix re-definition bug in MNC_GRID_INIT_ALL()
2932    o doc/api_reference added
2933      - a framework for building an API Reference Manual using all
2934        the "protex" comments embedded in the code
2935      - see pkg/generic_advdiff, pkg/mnc for examples
2936    o MNC:
2937      - make myThid the last argument for all subroutines
2938      - new default for the grid files: NO halos
2939      - add useMNC and other run-time flags
2940      - separate per-file-group handling of the unlimited dimension
2941      - early initialization of MNC w/ flags read at the eeboot stage
2942        and lookup tables set in initialize_fixed
2943      - write all MNC output to a freshly-created directory
2944    o thermodynamics sea-ice (thsice) is now tested with testreport.
2945    o test exp. advect_cs: use the standard cs32 grid ; update output.
2946    o Added functionality to grdchk:
2947      pick global i,j,k position (or nearest wet) where to perform check.
2948    
2949    checkpoint52l_post
2950    o new land formulation:
2951      a) use ground enthalpy as prognostic variable to ensure exact
2952         energy conservation.
2953      b) account for water temperature and for latent heat of freezing
2954         in all processes (rain, run-off, ground storage)
2955      c) compute surface and ground temperature implicitly.
2956    o aim_v23 modification for new land model:
2957      a) Treat separately land / ocean / sea-ice surface fluxes
2958         to allow implicit computation of land & sea-ice surface temp.
2959      b) add snow precipitation.
2960    checkpoint52l_pre
2961    
2962    o fix problem (when 1 tile is empty) in min/max monitor.
2963    o fix bug in timeAve (u,vZetatave in common block)
2964    o no restoring terms under ice for pkg/seaice
2965    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2966    o bug fix for pkg/seaice pickups
2967    o change MNC call locations and add coordinate attributes
2968    o mask vorticity at the corner ; affects global_ocean.cs output
2969    o fix ini_curvilinear_grid ; test CS experiments with mpi
2970    o aim.5l_cs: modify sea-ice fraction input file ; update output
2971    o exf: Adding simple range check routine for exf fields after read
2972    
2973    checkpoint52k_post
2974    o removed top-level directory "diags"
2975      - we migrated these functions to pkg/timeave a long time ago
2976    o fixed bug introduced in pkg/monitor
2977    o accuracy ctrlprec = 32 insuffient for gradient checks using
2978      averaged fields (I/O via cost_averages)
2979      -> use ctrl.h in active_file*.F to control I/O precision.
2980    o paramter list of CALL ADTHE_MAIN_LOOP
2981    o added initial do_the_model_io to ecco
2982    o set all ...Freq to zero after cost_final
2983      taveFreq, dumpFreq, pChkptFreq
2984    o MAIN and ECCO differentiability restored
2985    
2986    checkpoint52j_post
2987    o fix nchklev in tamc.h for global_ocean...
2988    o Bringing flow and store directives up-to-date
2989    o Really weird thing!
2990      call do_the_model_io from the_main_loop with parameters
2991      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2992      TAF places a faulty re-call of initialise_varia
2993      after cost_final call which should not be there!
2994    checkpoint52j_pre
2995    
2996    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2997      error messages
2998    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2999    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
3000      debug output
3001    o modfied mdsio_writefield.F to handle non-global files under exch2
3002    o update AIM Cubed-Sphere exp (aim.5l_cs):
3003      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
3004    o update AIM Equatorial Channel exp:
3005      use standard aim_v23 pkg and change the SST fields to be more realistic.
3006    o globalFile now works with exch2
3007    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
3008      mon_vort3.F to make exch2 friendly with >1 tile per cube face
3009    o limit timeave output for hi-res integrations
3010    
3011    checkpoint52i_post
3012    o removed CPP_EEOPTIONS.h from verification/*/code
3013    o updated the tiling for global_ocean_pressure
3014    checkpoint52i_pre
3015    
3016    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
3017      the old pkg/aim).
3018    
3019    checkpoint52h_pre
3020    o shortened offending lines in exch2_send_rx?.template
3021    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
3022    o genmake2: add build & execute test for NetCDF code
3023    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
3024      old grid files, moved CPP_EEMACROS.h to pkg/exch2
3025    o added useSingleCPUIO flag to monitor.F and mon_out.F
3026    o added temporary hack for sea-ice dynamics on the cube:
3027      metric terms are ignored and it is assumed that
3028      there is no sea-ice on cube faces 1, 2, 4, and 5.
3029    
3030    checkpoint52f_post
3031    o added exch2 cube routines to pkg/exch2
3032    o modified hs94.cs-32x32x5 to use it
3033    o added new grid files to hs94.cs-32x32x5
3034    checkpoint52f_pre
3035    
3036    checkpoint52e_post
3037    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
3038      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
3039    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
3040      to work with implicit vertical advection and AB ;
3041    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
3042    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
3043     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
3044    checkpoint52e_pre
3045    
3046    o fix bug in impldiff when Nr=1 or Nr=2.
3047    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
3048    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
3049    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
3050      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
3051    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
3052    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
3053    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
3054    
3055    checkpoint52d_post
3056    o re-tiled many expts to allow comparison in multi-processor mode
3057      - updated output accordingly
3058      - changed hs94.128x64x5 to use intial T from file rather than use the
3059        random number generator
3060    o add infrastructure in model routines for fizhi and gridalt packages
3061    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
3062    o changes to permit hi-res, cubed-sphere, configuration
3063      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
3064      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
3065      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
3066        of surface winds for the cube
3067      (A verification experiment, based on global_ocean.cs32x15, but with
3068       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
3069       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
3070       complete with example surface forcing files and matlab scripts to look
3071       at the output and compare it with that of global_ocean.cs32x15.)
3072    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
3073       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
3074       to conform to the common rule.
3075    o check-in the first version of the coupler + interfaces for multi-components
3076       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
3077       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
3078       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
3079       - ocean and atmos. share the same horizontal grid (no interpolation).
3080       - exchanges between component and coupler is done in forward_step
3081    o new verification experiment, cpl_aim+ocn:
3082       coupled ocean - AIM atmosphere on cs32 grid.
3083    
3084    checkpoint52d_pre
3085    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
3086    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
3087    
3088    checkpoint52c_post
3089    o Fixing OPTIONS files for use of exf:
3090      - ALLOW_ECCO not needed
3091      - ECCO_CPPOPTIONS.h should not be included from
3092        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
3093        as has been the case in the past
3094      - All cal/exf related options are currently set in
3095        single header file. Should remain so until we
3096        agree on a consistent new policy.
3097    o Removed all CPP options for cal package.
3098      cal has no more CPP options.
3099    o modified STOREs in GAD_ADVECTION
3100    o corrected key comp. for passkey
3101    
3102    checkpoint52b_post
3103    o new version: "thsice" of thermodynamic sea-ice pkg:
3104     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
3105     - modify fluxes but do not change theta directly;
3106     - light cleaning of bulk_force pkg (still needed with thsice).
3107     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
3108       + output_thsice.txt to test thsice & bulk_force pkgs.
3109    o put back grid & coriolis monitor output.
3110    checkpoint52b_pre
3111    
3112    o call "do_the_model_io" at the beginning (=> dump initial state)
3113    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
3114    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
3115      (need info on NUMBER_OF_PTRACERS)
3116    o missing PTRACERS headers in some routines
3117    o default tamc.h in pkg/autodiff supposed to crash
3118      to ensure proper customization
3119    
3120    checkpoint52a_post
3121    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
3122      - moved surfaceTendencyTice from pkg/seaice to main code
3123      - subroutine FREEZE_SURFACE now limits only surface temperature
3124        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
3125        => new output.txt for global_ocean.cs32x15 & global_with_exf
3126      - keep the old version of FREEZE for backward compatibility;
3127        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
3128      - corresponding modifs for TAF directives
3129    o added surface flux output variables to TIMEAVE_STATVARS
3130    o time-averaged output for pkg/ptracers
3131    o fix problem with ECCO-related divided adjoint
3132      snapshot file was missing some ad-variables,
3133      but no warning issued by TAF
3134    
3135    checkpoint52a_pre
3136    o some bug fixes for #undef REAL4_IS_SLOW
3137    
3138    checkpoint52 = ecco_c52_e35
3139    o after testing adjoints of checkpoint51u_post
3140    
3141    checkpoint51u_post
3142    o this is the post-merge tag of the ecco-branch
3143      (needs another clean checkout and re-testing)
3144    o various natl_box_adjoint configs and results
3145      but no input fields
3146    o obcs adjoint not yet merged!
3147    o adding ECCO global 1x1 and 2x2 degree configs
3148    o updated/extended some store directives for seaice
3149    o pkg/ecco now containes ecco-specific part of cost function
3150    o top level routines the_main_loop, forward_step
3151      supersede those in model/src/
3152      previous input data.cost now in data.ecco
3153      (new namelist ecco_cost_nml)
3154    o in ctrl/ cleaned some cross-dependencies and updated CPP options
3155    
3156    checkpoint51t_post
3157    o this is the pre-merge tag of the ecco-branch
3158    
3159    checkpoint51s_post
3160    o cleanup: removed various obsolete #define-s
3161    o pkg/grdchk
3162      - renamed 'ph-grd 3' to 'grad-res'
3163      - merged from ecco-branch
3164        (remaining bug fixes for obcs gradient checks)
3165      - additional high-precision output for testreport
3166        (grep for 'precision_grdchk_result')
3167    
3168    checkpoint51r_post
3169    o cleaned up or removed CPP_OPTIONS.h files
3170    o updated results for some of the tests to reflect the new
3171      optfiles (-ieee: -O0 instead of -O3)
3172    
3173    checkpoint51q_post
3174    o cd_code:
3175      - moved cd_scheme.F -> cd_code_scheme.F
3176      - separate read_checkpoint from cd_code_ini_vars.F
3177      - separated cd_code part from write_checkpoint
3178      - updated AD_SOURCE, generated .flow
3179      - added CD_CODE_VARS.h to the_main_loop
3180      - Moving cd_code specific store dir.s to pkg/cd_code
3181    o ctrl package totally restructured
3182      - pack/unpack now optional and decoupled from
3183        xx_/adxx_ I/O
3184      - ctrl_pack/unpack cleaned
3185        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
3186      - confined inclusion of AD_CONFIG.h to where necessary.
3187    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
3188    
3189    checkpoint51p_post
3190    o create initial cd_code package
3191      - WARNING: the initialization of fields within packages
3192        is broken because INI_FIELDS (where READ_CHECKPOINT is
3193        called) is called *before* PACKAGES_INIT_VARIABLES.
3194        This seems to be backwards since
3195        1) its important to initially zero the entire field including
3196           the "halo" region
3197        2) zeroing needs to be done *before* reading pickup info
3198           and the pickup call might or might not happen in any
3199           particular run
3200      - this needs an overhaul for R2
3201    o cleanup verification/*/code/GMREDI_OPTIONS.h
3202    o cleanup testreport
3203    
3204    checkpoint51o_post
3205    o bringing AD-related verif's up to date with genmake2
3206      - carbon/
3207      - global_ocean.90x40x15/
3208      - hs.94.1x64x5/
3209      - (front_relax/ )
3210    o (more) consistent directory structure for AD-related verif.'s
3211    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
3212    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
3213    o bug fix in find_alpha.F for MDJWF:
3214      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
3215        change rho -> rho-rhoConst
3216      - replace call find_rho to find_rhonum
3217    o initialisation of rFlx extended to full array (required by TAF)
3218      and shifted to thermodynamics
3219    o removed PTRACERS.h in ptracers routine
3220    o added surfacetendencyPtr to S/R parameter list pracers_forcing
3221    o Correcting initialisations for fVerU, fVerV.
3222    o helping TAF to recognize dependency on kUp for
3223      fVerU, fVerV
3224    o Replacing delZ by delR in pkg/ctrl/
3225    checkpoint51o_pre
3226    
3227    o undid all of cp51 pending some cleanups and discussion
3228    o added the [#include "AD_CONFIG.h"] statement to all files that need
3229       it for adjoint/tl #defines
3230     o re-worked the build logic in genmake2 to support AD_CONFIG.h
3231     o removed tools/genmake since it no longer works
3232    
3233    checkpoint51n_post
3234    o modifications to make FREEZE flux visible to pkg/kpp
3235      - moved surfaceTendencyTice from pkg/seaice to main code
3236      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
3237      - subroutine FREEZE now limits only surface temperature
3238        (this means new output.txt for global_ocean.90x40x15,
3239         global_ocean.cs32x15, and global_with_exf)
3240    o added surface flux output variables to TIMEAVE_STATVARS
3241    
3242    checkpoint51n_pre
3243    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
3244    o added [#include "AD_CONFIG.h"] to all files that use the following
3245      defines:
3246      - ALLOW_ADJOINT_RUN
3247      - ALLOW_TANGENTLINEAR_RUN
3248      - ALLOW_ECCO_OPTIMIZATION
3249    
3250    checkpoint51m_post
3251    o incorporating changes to get TAMC/TAF working in genmake2
3252      - added new TAMC/TAF targets to the Makefile
3253      - various cleanups related to package handling
3254      - these changes should have no impact on the forward model
3255    
3256    checkpoint51l_post
3257    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
3258     - faster algorithm for cal_addtime.F
3259     - higher precision arithmetic, where needed
3260     - pkg/exf *startdate variables changed from calendar date to
3261       model integration time
3262    
3263    checkpoint51l_pre
3264    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
3265    o enable to apply restoring on S & T only in a latitude band.
3266    o update output (external_forcing_surf modif. change truncation errors)
3267       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
3268    
3269    checkpoint51k_post
3270    o change default to: useNHMTerms=.FALSE.
3271     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
3272       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
3273     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
3274        exp1, ideal_2D_oce
3275     - change data file of oceanic exp (leave the results unchanged for now)
3276       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
3277    o set gravitySign automatically according to the vertical coordinate used
3278      (and change sign: back to "logical" value: +1 when R increases downward)
3279    o added an include barrier to the default CPP_OPTIONS.h and
3280      removed the #include "PACKAGES_CONFIG.h" from it
3281    o fix a bug in mom_fluxform (from chk51j_post)
3282    
3283    checkpoint51j_post
3284    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
3285    o adjusted some flow directives (dynamics, thermodynamics)
3286    o added cubed-sphere case to test cost function
3287    o heckpoint_lev?_directives.h now include
3288      pkg-specific directives, whenever those are enabled.
3289    o Moving pkg-specific flow directives to corresponding pkg
3290      Moving pkg-specific differentiation list to corresponding pkg
3291      Moving pkg-specific checkpoint-lev storing to corresponding pkg
3292      ---> conventions are
3293           - pkg_ad.flow
3294           - pkg_ad_diff.list
3295           - pkg_ad_check_lev?_dir.h
3296    
3297    checkpoint51i_post
3298    o merge of the branch-genmake2
3299      - knowingly breaks the older genmake
3300      - automatic generation of all ALLOW_${PKG_NAME} defines
3301      - new testreport supersedes older testscript
3302    o large number of package inclusion and header cleanups
3303    checkpoint51i_pre
3304    
3305    o new output for adjoin of global ocean vector invariant
3306    o fix for checkpoint of thermodynamic seaice and bulk_force
3307    o Steph gchem various cleanups
3308    
3309    checkpoint 51h_pre
3310    o fixed some single quotes
3311    o modify gchem pkg to be more versatile
3312    o modifications to clean up dic pkg
3313    o add pkg/cfc
3314    
3315    checkpoint51g_post
3316    o provide links for ARPACK and ADM*TLM
3317    o start removing verification/vero/
3318    o update AD-related stuff
3319      (in particular some IF-statements in model/src/ routines)
3320    o adding to verification/global_ocean.90x40x15/ adjoint of
3321      vector invariant setup
3322    
3323    checkpoint51f_post
3324    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
3325    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
3326      of tracer Green's fucntions for ocean inversion project.
3327    
3328    checkpoint51f_pre
3329    o Added on-the-fly spatial interpolation capability
3330        "USE_EXF_INTERPOLATION" to pkg/exf.
3331      - This is a temporary Cartesian-grid hack until
3332        the super-duper ESMF coupler becomes available.
3333      - See verification/global_with_exf/README for usage example.
3334      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
3335        flags and modified pkg/seaice accordingly.
3336    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
3337        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
3338        non-local transport term.
3339    
3340    checkpoint51e_post
3341    o pkg/mom_vecinv:
3342      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
3343      - add time-ave diagnostic of vorticity advection.
3344    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
3345    o atmospheric geopotential: - include water vapor effect;
3346                                - use p^kappa in p* scaling.
3347    o land pkg: read initial state from files.
3348    o AIM : add stratospheric drag in the upper level
3349    
3350    checkpoint51d_post
3351    o change function ILNBLNK (=> last non-blank char.) to return zero
3352      (instead of the string length) when the string. char is empty
3353    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
3354    o modif's to restore TAMC compatibility
3355      - avoid "_d" constructs in PARAMETER declarations
3356      - avoid interrupting lines by comment lines
3357    o Use cluster local disks for purely local I/O
3358      vs. globally visible disks needed for ctrl stuff
3359      (merged from ecco-branch)
3360      - new active_file_loc... and mdsio_..._loc routines
3361      - affected packages: autodiff, ctrl, grdchk, mdsio
3362    
3363    checkpoint51c_post
3364    o introducing integer flag debugLevel
3365      - debLevZero: suppress all output
3366      - debLevA: standard
3367      - debLevB: equivalent to current debugMode=.TRUE.
3368    o introducing pathname variable mdsioLocalDir for mdsio
3369      that can be specified at runtime
3370      (relevant for cluster I/O to local disk)
3371    `
3372    >>>checkpoint51b_post
3373    adjoint of ptracers
3374    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
3375    o extended state in checkpoint_lev?, etc.
3376    o alternative ctrl/cost with tr1 or ptracer
3377    o new comlev1_bibj_ptracers
3378    o new ptracers.flow
3379    o made ptracers_forcing same as external_forcing_s
3380    o added verification for adjoint with ptracers
3381      - adm. grdchk fail so far
3382      - tlm. grdchk OK
3383      - checked tapelev/comlev recomputations: OK
3384    <<<checkpoint51b_pre
3385    
3386    checkpoint51a_post
3387    o added code for biogeochemistry package
3388      - new pkgs: dic, gchem
3389      - new subroutine in ptracers
3390    o modify code for biogeo packages
3391      - in model/src and pkg/ptracers
3392    
3393    checkpoint51
3394    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
3395      - autodiff, ctrl, exf, grdchk, seaice
3396      kept separate packages
3397      - cost, ecco, obcs
3398    o updating verification/internal_wave, verification/lab_sea
3399      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
3400    
3401    checkpoint50i_post
3402    o Preparing next differentiable checkpoint and sync
3403      of MAIN vs. ecco-branch
3404      - 1st step: this one is differentiable
3405      - 2nd step: next(! not this) checkpoint will have updated packages
3406                  from ecco-branch)
3407    
3408    checkpoint50h_post
3409    o new package "land": provide surface BC for AIM.
3410    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
3411    o AIM: use true log-P extrapolation for near surface temp (= as in
3412        F.Molteni paper) ; update aim.5l_cs output.
3413    o New variable in PARM03 for more flexible pickups
3414    o somewhat cleaned package initialisation sequence for
3415      ctrl/ cost/ ecco/ in packages_... routines
3416    
3417    checkpoint50g_post
3418    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
3419      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
3420      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
3421        made the default because of faster convergence than ADI
3422    
3423    checkpoint50f_post
3424    o exf totally restructured
3425      - replaced all exf_set_ routines by one generic exf_set_gen.F
3426        and made sure it's still differentiable
3427      - split exf_getffields.F into new exf_bulkformulae.F
3428      - exf_inscal_/exf_outscal_ suffixes consistent with field names
3429      - updated adjoint/makefile and relevant verif. accordingly
3430    
3431    checkpoint50f_pre
3432     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
3433          + change Evap over land. (update aim.5l_cs output)
3434     o added missing .cvsignores and made uniform across expts
3435     o changed configuration of tidal_basin_2d expt
3436     o added pkg/debug functions for tracing code in fatal crashes
3437     o tidied pkg/monitor to use MONITOR_OPTIONS.h
3438     o new fn in pkg/monitor to stop model if solution grows too big
3439     o removed lots of single quotes from comments
3440    
3441    checkpoint50e_post
3442    o make KPP work with PTRACERS
3443     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
3444       nearly a copy of kpp_transport_s
3445     - there is no analogue to SurfaceTendencyS, so I have to use
3446       gPtr(of the surface layer) instead
3447    o add a new platform SunFire+mpi (SunFire 15000) to genmake
3448    checkpoint50e_pre
3449    
3450    checkpoint50d_post
3451    o change kpp output from multiple-record state files to single-record state
3452      files analogous to write_state.F
3453    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
3454      analogous to the cg2d-related output.
3455    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
3456      so that writing to internal file fn (with length 512) fails.
3457    checkpoint50d_pre
3458    
3459    checkpoint50c_post
3460    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
3461    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
3462    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
3463    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
3464    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
3465    
3466    checkpoint50c_pre
3467    Merging from release1_p13:
3468    o bug fix for pkg/seaice dynamic solver
3469    o Added SEAICE_initialHEFF to pkg/seaice
3470    
3471    checkpoint50b_post
3472    o store u*,v* in gU,V instead of in guNm1,gvNm1
3473    o in order to put the momForcing out of the Adams-Bashforth:
3474      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
3475      to timestep.F
3476    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
3477    o re-generate output for highly sensitive test-exp:
3478       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
3479    
3480    checkpoint50b_pre
3481    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
3482    o corrected CPP option mismatch in exf_Bulk... functions for case
3483      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
3484    
3485    checkpoint50a_post
3486    o Bug fix for merging between c50 and KPP.
3487      ikey was passed from thermodynamics to kpp_calc via
3488      common block rather than being recomputed in kpp_calc,
3489      in contradiction with new key itdkey.
3490      New key ikppkey created, and tamc.h headers updated.
3491    
3492    checkpoint50
3493    - 2nd step of merge with ecco-branch:
3494      merge changes in ecco-branch back into main trunk
3495    - bug fix in find_alpha
3496    - more storing in gmredi_calc_tensor.F, kpp_routines.F
3497    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
3498    - merged some sliced AD support routines
3499    
3500    checkpoint49
3501    merged from ecco-branch:
3502    o exf:
3503      - Enable initialisation of forcing fields to constant
3504        (runtime) values.
3505      - in exf_getffields.F
3506        Reduce i-/j-loop to interior domain, discarding overlaps.
3507        That also fixes wrong TAF-key computations for key_1, key_2
3508        with bulf formulae.
3509      - exf_init.F modify #ifdef for exf_init_evap
3510      - exf_getffieldrec.F, ctrl_getrec.F
3511        The following INT-usages are not safe:
3512          fldsecs  = int(fldsecs/fldperiod)*fldperiod
3513          fldcount = int(fldsecs/fldperiod) + 1
3514        and were modified.
3515    o autodiff: checkpoint_lev...
3516      - updated storing for bulk formulae (some arrays were missing)
3517      - added state for seaice package
3518      - synchronized with main branch
3519    o DIVA:
3520      Modif.s in
3521      - the_main_loop.F
3522      - the_model_main.F
3523      and added cost_final_restore.F cost_final_store.F
3524      o With these changes, it is possible to fully separate
3525        the first forward run to compute the cost function (mdthe_main_loop)
3526        and adjoint runs over individual DIVA intervals (adthe_main_loop)
3527        into separate model executions.
3528        This enables better tuning of DIVA to given queue sizes.
3529      o Loss of cost function value in consecutive DIVA runs is
3530        fixed by storing to 'costfinal' file.
3531      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
3532        beginning/end of adjoint integration is accounted for.
3533      The current changes apply to TAF-1.4.26.
3534      TAF has one remaining bug, requiring one manual change
3535      (see MITgcm manual).
3536    o cal: synchronized between MAIN and ecco-branch
3537    
3538    checkpoint48i_post
3539    o Changes to restore differentiability of code w.r.t. previous tag
3540      (mostly adding new routines to make list and replacing
3541      pressure by totPhiHyd).
3542    o Updated and merged grdchk package
3543      - has both ADM and TLM checks
3544      - works for single- and multi-proc.
3545      - output cleaned
3546      - worked successfully for parallel DIVA
3547    o genmake:
3548      - Adding -platform=SP4
3549      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
3550    o Modif. for DIVA:
3551      ctrl_unpack should not be called in intermediate DIVA interval.
3552      (similar thing would apply for active files such as
3553      tbar, sbar, psbar, which should not be reinitialised;
3554      only relevant for ecco-branch)
3555    
3556    checkpoint48h_post
3557    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
3558    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
3559    o Added SEAICE_initialHEFF to pkg/seaice
3560    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
3561    
3562    checkpoint48g_post
3563    --- EOS:
3564    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
3565      store total Potential in totPhyHyd for diagnostics & EOS.
3566    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
3567    --- Pressure/geopotential gradient:
3568    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
3569    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
3570      ( changes results of global_ocean_pressure )
3571    o NLFS + z-coord.: add eta*Rho' contribution.
3572    o accurate phiHyd when using interface-W at the middle between 2 centers
3573     ( changes results of ideal_2D_oce )
3574    o includes r* 2nd term in potential gradient.
3575    
3576    checkpoint48f_post
3577    Merging from release1_p12:
3578    o Modifications for using pkg/exf with pkg/seaice
3579      - improved description of the various forcing configurations
3580      - added basic radiation bulk formulae to pkg/exf
3581      - units/sign fix for evap computation in exf_getffields.F
3582      - updated verification/global_with_exf/results/output.txt
3583    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
3584      (SBO) core products, including oceanic mass, center-of-mass,
3585      angular, and bottom pressure (see pkg/sbo/README.sbo).
3586    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
3587      to avoid negative values in shallow regions.
3588      - updated verification/natl_box/results/output.txt
3589      - updated verification/lab_sea/results/output.txt
3590    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
3591    o Added useSingleCpuIO option (see PARAMS.h).
3592    o Updated useSingleCpuIO option in mdsio_writefield.F to
3593      work with multi-field files, e.g., for single-file pickup.
3594    o pkg/seaice:
3595      - bug fix in growth.F: QNET for no shortwave case
3596      - added HeffFile for specifying initial sea-ice thickness
3597      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
3598    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
3599      kpp_transport_t.F, forward_step.F, and the_main_loop.F
3600    o pkg/seaice:
3601      - adjoint-friendly modifications
3602      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
3603    
3604    checkpoint48e_post
3605    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
3606    o dynamics: change definition of computational domain & adapt mom_fluxform
3607      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
3608    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
3609        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
3610        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
3611        global_ocean.90x40x15 global_with_exf global_ocean_pressure
3612        inverted_barometer solid-body.cs-32x32x1
3613      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
3614    
3615    checkpoint48d_post
3616    o in preparation for r*:
3617     a) use pre-computed gradient of hydrostatic potential:
3618        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
3619     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
3620        => affects results of glob_oce_pressure (different truncation error)  
3621      update output.txt of ideal_2D_oce & global_ocean_pressure
3622    
3623    checkpoint48d_pre
3624    o in preparation for r*:
3625      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
3626      pass the 2 comp. of the grad. as arguments to momentum S/R.
3627      but for the moment, only used if it does not change the results.
3628    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
3629    
3630    checkpoint48c_post
3631    Modifications in treatment of initial flux forcing controls
3632    to avoid extra storing of flux fields.
3633    
3634    checkpoint48c_pre
3635    o Added tidal_basin_2d experiment (currently 1D!)
3636    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
3637    
3638    checkpoint48b_post
3639    o r* coordinate added in #ifdef NONLIN_FRSURF block.
3640     (modification to pressure gradient not yet implemented)
3641    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
3642      (for U & V) that are used for vertical advection of momentum.
3643    
3644    checkpoint48a_post
3645    o In preparation for r*, use temp. array to compute vertical transport
3646       in flux-form momentum pkg. => change results of few test-exp.
3647      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
3648                        lab_sea, natl_box & plume_on_slope
3649    
3650    checkpoint48
3651    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
3652    
3653    checkpoint47j_post
3654    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
3655    o moved adexch from forward_step to addummy_in_stepping
3656    o added exch in ctrl_map_...
3657    o aveFreq.=0. at end of cost_final to avoid overwrite in
3658      reverse checkpointing loop
3659    o Yet more changes in gmredi:
3660      * adgmredi_calc_tensor
3661        avoiding all recomputation of gmredi_slope_limit
3662      * adgmredi_x/y/rtransport
3663        added flag for excessive storing to avoid recomp. of
3664        u/v/rtans, dTdx/y/z
3665        -> this is not really necessary and very memory-consuming
3666      * adgmredi_slope_psi:
3667        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
3668      * gmredi_slope_limit
3669        re-activated full calculation of taperfct for case 'ac02'
3670    o updating verification/ adjoints of carbon, global_ocean.90x40x15
3671    
3672    checkpoint47i_post
3673    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
3674    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
3675      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
3676    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
3677    o gmredi: fix few bugs.
3678    
3679    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
3680    This will be a good checkpoint to plug into the ecco-branch.
3681    o few modif.'s to get latest version adjointed
3682      (mainly kick out code in ini_linear_phisurf)
3683    o modif's to run adjoint with exactConserv
3684    o case GM_BOLUS_ADVEC should be cleaned
3685      S/R gmredi_slope_psi should be cleaned
3686    o verification/carbon now has exactConserv=.TRUE.
3687    
3688    checkpoint47g_post
3689    o time-average AIM output: becomes independent from statvars time-average
3690      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
3691    o After TAF bug fix:
3692      Tested adjoint of gmredi package.
3693      Tests were done with checkpoint47 rather than with latest
3694      checkpoint47f_post since the latter is broken for the adjoint
3695      verification/carbon/ contains both ADM and TLM gradient checks.
3696    Here they are, before they get changed/lost/stolen.
3697    Mostly modif.'s to fix numerical sensitivities.
3698    Gradient checks OK for
3699    - GM_taper_scheme:
3700      * clipping
3701      * ac02
3702      * linear
3703      * glw91
3704      * dm95
3705      * ldd97
3706    - GMREDI_OPTIONS:
3707      * GM_VISBECK_VARIABLE_K
3708      * GM_NON_UNITY_DIAGONAL
3709      * GM_EXTRA_DIAGONAL
3710      * GM_BOLUS_ADVEC
3711    in conjunction with data.gmredi parameters to be checked in
3712    in a few minutes under verification/carbon/code/
3713    
3714    checkpoint47f_post
3715    Merging from release1_p10:
3716    o modifications for using pkg/exf with pkg/seaice
3717      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
3718        and SEAICE_EXTERNAL_FLUXES
3719      - pkg/exf CPP options EXF_READ_EVAP and
3720        EXF_NO_BULK_COMPUTATIONS
3721      - usage examples are Experiments 8 and 9 in
3722        verification/lab_sea/README
3723      - verification/lab_sea default experiment now uses
3724        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
3725    
3726    checkpoint47e_post
3727    o created a tag prior to creating a branch
3728    
3729    checkpoint47d_post
3730    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
3731      at the bottom boundary had an erroneous half slip boundary condition
3732    o added bottom drag and no slip boundary condition capabilities to
3733      oceanic pressure coordinates code
3734    o added new verification experiment global_ocean_pressure, this experiment is
3735      also described in the tutorial section of the manual
3736    checkpoint47d_pre
3737    
3738    checkpoint47c_post
3739    o Added a verification experiment for a global cubed-sphere ocean run
3740      -  verification/global_ocean.cubed32x32x30
3741      -  uses pkg/therm_seaice and pkg/bulk_forcing
3742    
3743    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
3744    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
3745      when using P-coordinate; only implemented for atmospheric config.
3746    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
3747      NOTES: requires option NONLIN_FRSURF to be "#define".
3748    o update advect_xz/results/output.txt (left from checkpoint44g_post)
3749    
3750    checkpoint47b_post
3751    Merging from release1_p9:
3752    o pkg/seaice
3753      - removed GOTO's and added taf directives
3754      - double precision constants to reduce the g77 (Linux)
3755        to F77 (SGI) differences reported in release1_p8
3756    o tools/genmake
3757      - added SGI options
3758    o verification/testscript
3759      - updated to that of checkpoint47a_post
3760    o verification/global_ocean.90x40x15/input/eedata
3761      - modified for SGI f77 compatibility
3762    o verification/lab_sea
3763      - added description of sea-ice model
3764      - added missing matlab routines
3765      - added test of thermodynamics parallelization
3766    
3767    checkpoint47a_post
3768    o new pkg: aim_v23
3769     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
3770       for now, keep the same surface forcing as before.
3771     - Part-Cell implemented into AIM; check that Heat & Water are conserved
3772     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
3773     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
3774    o add diagnostic of surface correction term in monitor output
3775    
3776    o bulk_force and therm_seaice
3777    - Two packages:  bulk_force (Bulk forcing)
3778      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
3779    - Earlier integration from Stephaine Dutkiewicz
3780      and Patrick Heimbach.
3781    - Two ifdef statements for compile time,
3782       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
3783    
3784    checkpoint47
3785    differentiable version of checkpoint46n_post
3786    o bug fix in quasihydrostaticterms
3787    o * "clean" adjoint code (in terms of extensive recomputations)
3788        can now be obtained for all GMREDI options (i.e. for
3789        - GM_VISBECK_VARIABLE_K
3790        - GM_NON_UNITY_DIAGONAL
3791        - GM_EXTRA_DIAGONAL
3792        - GM_BOLUS_ADVEC )
3793      * However, wrong gradient check problem remains unsolved.
3794      * New CPP options have been introduced for different
3795        tapering schemes
3796    o external_fields_load now part of differentiation list
3797    o pressure needs multiple storing;
3798      would be nice to have store_pressure at beginning or
3799      end of forward_step, e.g. by having phiHyd global (5-dim.)
3800      (NB: pressure is needed for certain cases in find_rho,
3801      which is also invoked through convective_adjustment).
3802    o recomputations in find_rho for cases
3803     'JMD95'/'UNESCO' or 'MDJWF' are OK.
3804    o #define ATMOSPHERIC_LOADING should be differentiable
3805    o ini_forcing shifted to begining of initialise_varia
3806    o Incorporating QNVS line search routines into MITgcm
3807      (this is separate code, and therefore not under pkg)
3808      lsopt/, optim/
3809    o Updated verification/carbon/
3810      - #define GM_VISBECK_VARIABLE_K
3811      - GM_taper_scheme    = 'ldd97'    
3812    
3813    checkpoint46n_post
3814    Merging from release1_p8:
3815    o verification/natl_box:
3816      updating new external_fields_load routine
3817    o New package: pkg/seaice
3818      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
3819      The sea-ice code is based on Hibler (1979-1980).
3820      Two sea-ice dynamic solvers, ADI and LSR, are included.
3821      In addition to computing prognostic sea-ice variables and diagnosing
3822      the forcing/external data fields that drive the ocean model,
3823      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
3824      The implied surface heat flux is then stored in variable
3825      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
3826      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
3827      non-local transport term.  Because this call precedes model
3828      thermodynamics, temperature under sea-ice may not be "exactly" at
3829      the freezing point by the time theta is dumped or time-averaged.
3830      N.B.: fairly large differences in accuracy occur across
3831            different platforms/compilers; comparison between
3832            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
3833            generated output gives:
3834       T           S           U           V
3835      C D M    c        m  s        m  s        m  s        m  s
3836      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
3837      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
3838      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
3839    
3840      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
3841    o GAD:
3842      - generated new common blocks to account for call of
3843        same gad routines with differing traceridentities
3844        (needed to modify tracerIdentity indices in GAD.h)
3845      - generated separate common blocks for case useCubedSphereExchange
3846        (Department of Futurology)
3847      - parameter lists to gmredi_?transport: added tracerIdentity
3848      - added new key indices to tamc.h
3849    o external_fields_load:
3850      - added this routine to TAF list
3851      - needed to make some common blocks global and additional storing
3852        along the same lines as exf package (checkpoint_lev?_directives.h)
3853    o exf:
3854      updated external forcing package
3855      - bug fixes carried over from ecco-branch
3856        (missing OBCS_OPTIONS.h in two routines)
3857      - enable easy to use "no forcing".
3858      - added exf I/O for atmospheric loading
3859      - added exf I/O for runoff data
3860      - transfered scaling between exf <-> MITgcm to exf namelist
3861    o Adding new verification experiment global_with_exf.
3862      This verification experiment is almost identical to the
3863      global_ocean.90x40x15 experiment, except that it uses
3864      the exf (and cal) package instead of the
3865      external_fields_load routine (cf README file).
3866    
3867    checkpoint46m_post
3868    o modified testscript to return -- when there are no lines of "%MON" output
3869    o added new flag "quasiHydrostatic" for QH mode
3870      and new routine quasihydrostaticterms()
3871    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
3872      New routine: mom_u_coriolis_nh()
3873    o fixed sign of non-hydrostatic metric terms in u and v equations.
3874      Depend on correct sign of gravitySign.
3875    o added work.pc* to .cvsignore in aim directories using ifc
3876    o introduced flag for controllin non-hydrostatic metric terms
3877    o removed gravitySign from PARM04
3878    o switched to g77/ifc from pgf77 in aim experiments
3879    
3880    checkpoint46l_post
3881    o made convective adjustment work with pressure coordinates:
3882     - changed the direction of k-loop in convective_adjustment.F for the
3883       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
3884     - adjusted the reference pressure k-index in convective_adjustment.F
3885     - adjusted the convection condition in convect.F (in analogy to
3886       calc_ivdc.F)
3887     - convective_adjustment no longer computes anything on the halos
3888     - removed the warnings about negative salinity from find_rho.F and
3889       find_alpha.F; instead the new routine look_for_neg_salinity, called
3890       at the beginning of find_rho, find_alpha, and find_beta, does a
3891       check of the entire slice, if CPP-option
3892       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
3893    checkpoint46l_pre
3894    
3895    checkpoint46k_post
3896    o fixed the verification/global_ocean.90x40x15 experiment:
3897     - new bathymetry (the world according to A., JMC, and M.)
3898     - new initial fields and forcing fields (*.bin files)
3899     - new POLY3.COEFFS (for the next release one should switch to a full
3900       equation of state: JMD95P or MDJWF)
3901     - fixed several errors and redundancies in the data file
3902     - experiment uses looped cells
3903     - added matlab directory with diagnostic scripts for plotting of output
3904    
3905    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
3906     - read AIM physics parameters from a file (data.aimphys)
3907     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
3908    
3909    checkpoint46j_post
3910    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
3911    o move wVel computation at the end of the time step, in S/R integr_continuity
3912    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
3913    o update timeave pkg for wVel diagnostic.
3914    checkpoint46j_pre
3915    
3916    checkpoint46i_post
3917    o Clean up AIM package (and keep the results unchanged):
3918      include CPP_OPTION and use IMPLICT NONE in all routines ;
3919      declare all the variables _RL ; use _d 0 for all numerical constants.
3920      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
3921    
3922    checkpoint46h_post
3923    o cleaned up the use of rhoNil and rhoConst.
3924      - rhoNil should only appear in the LINEAR equation of state, everywhere
3925        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
3926        and the dynamical equations are all divided by rhoConst
3927    o introduced new parameter rhoConstFresh, a reference density of fresh
3928      water, to remove the fresh water flux's dependence on rhoNil. The default
3929      value is 999.8 kg/m^3
3930    o cleanup up external_forcing.F and external_forcing_surf.F
3931      - can now be used by both OCEANIC and OCEANICP
3932    checkpoint46h_pre
3933    
3934     Added code to convert surface volume flux (fresh water) into
3935     a mass flux when using P coordinates in the ocean (OCEANICP).
3936     Note: It assumes you have set rho0=rhoConst=density of fresh water.
3937    
3938    checkpoint46g_post
3939    o Include a new diagnostic variable phiHydLow for the ocean model
3940      - in z-coordinates, it is the bottom pressure anomaly
3941      - in p-coordinates, it is the sea surface elevation
3942      - in both cases, these variable have global drift, reflecting the mass
3943        drift in z-coordinates and the volume drift in p-coordinates
3944      - included time averaging for phiHydLow, be aware of the drift!
3945    o depth-dependent computation of Bo_surf for pressure coordinates
3946      in the ocean (buoyancyRelation='OCEANICP')
3947      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
3948        Theta, Salinity, and Pressure in the parameter list. This routine is
3949        presently contained in find_rho.F. This routine does not give the
3950        correct density for 'POLY3', which would be a z-dependent reference
3951        density.
3952    o cleaned up find_rho
3953      - removed obsolete 'eqn' from the parameter list.
3954    o added two new verification experiments: gop and goz
3955      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
3956    checkpoint46g_pre
3957    
3958    checkpoint46f_post
3959    o Enable tangent linear (forward mode) gradient checks:
3960      - extended active file handling to g_... files
3961      - added TANGENT_SIMULATION to theSimulationMode
3962      - extended grdchk package accordingly
3963    o added tangent linear setup in verification/carbon/code_ftl
3964    o added adjoint setup in verification/front_relax/code_ad
3965    
3966  checkpoint46e_post  checkpoint46e_post
3967  o Added new equation of state -> MDJWF  o Added new equation of state -> MDJWF
3968    - EOS of McDougall et al., 2002, JAOT, submitted    - EOS of McDougall et al., 2002, JAOT, submitted

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