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revision 1.190 by edhill, Tue Oct 21 15:29:20 2003 UTC revision 1.1155 by jmc, Thu Sep 3 22:00:51 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/diagnostics:
8      implement a RS type version for the set of DIAGNOSTICS-FILL subroutines
9    o fix few RS/RL type mismatch (check with ifort 11.1 "-warn all" option)
10    o pkg/mdsio (& pkg/rw): rework high level S/R interface:
11      To avoid mixing type (RS/RL) of input/output array argument,
12      replace single mixed-type array with a pair from each type (RS/RL).
13    o setting pickupSuff force to start from a pickup (even if nIter0=0): this
14      is now implemented for all pkgs (previously only done for the main pickup)
15    
16    checkpoint61u
17    o pkg/obcs:
18      - change OB?eta from _RS to _RL and put them into a separate commen block
19      - add code to read OB?eta from a file via obcs_prescribe_read: the code
20        compiles and does not destroy any other experiments, the data is read
21        properly, but the code is not tested in actual applications
22    o ini_mnc_vars.F: if available (ALLOW_CAL), use startTime_1 and 2 to
23      create a meaningful unit attribute for the time coordinate variable
24    o pkg/ebm: add plenty of missing "_d 0" ;
25       update results of experiment global_ocean_ebm (fwd + adjoint tests)
26      Notes: several pieces of code only works for (very) specific set up
27       (domain size, lat range, etc ...); should be documented & stop if one
28       of those assumptions is not meet.
29    o pkg/seaice: add missing "_d 0" in HSNOW initialisation
30       update results of experiments: lab_sea (3 fwd tests + 2 adjoint tests)
31          and offline_exf_seaice (seaicetd + adjoint).
32    o add missing "_d 0" in ShortWave flux penetration (S/R SWFRAC):
33       update results of experiments: lab_sea (4 fwd tests + 3 adjoint),
34        seaice_obcs, global_ocean.cs32x15 (icedyn & thsice) and natl_box (x2).
35    o few changes to pass when compiling with strick checking of arguments
36       across S/R (allow to find few bugs in S/R calls).
37    o pkg/seaice:
38     - seaice_evp: move if-statement out of loop (TEM) at the cost of 11 new
39       2d-fields, for slightly better performance
40    
41    checkpoint61t
42    o pkg/seaice:
43     - remove unused variables in seaice_evp
44     - reduce number of SQRT in seaice_evp and seaice_calc_viscosities
45    o eeset_parms.F, open_copy_data_file.F & ini_parms.F:
46       named file replacing SCRATCH files (for TARGET_BGL & TARGET_CRAYXT):
47       each processor opens a different file (a fix from Matt).
48    o cg2d:
49       use simple EXCH (overlap size = 1 and ignore corners), like in cg3d.F :
50       this reduces number of EXCH calls by 2 when using exch2.
51       For now, keep previous size array for gc2d_nsa.F to avoid Pb with store
52       directives and missing simple EXCH (exch_s3d_rx) adjoint code.
53    o pkg/thsice:
54       add code for Near Infra-Red albedo (from Jeff)
55       (turned on with run-time flag: thSIce_calc_albNIR, in data.ice).
56    o ini_model_io:
57       move (from packages_readparms.F & initialise_fixed.F) to ini_model_io.F
58       MNC & MONITOR initialisation calls; move MNC calls from {pkg}_readparms.F
59       to {pkg}_init_fixed.F for {pkg}= kpp, seaice & shelfice.
60    
61    checkpoint61s
62    o pkg/exch2 (exch2_rxN_cube*):
63       remove last BARRIER (no need to synchronise after getting data from shared
64       buffer (get) as long as any change to buffer (put,recv) is between BARRIER)
65    o change tiling of natl_box (from 2 to 4 tiles) to get it tested with MPI+MTH
66      and generate new output (for the 2 tests) using default rotationPeriod.
67    o pkg/exch2:
68      - always call exch2_*_cube, not exch-1 anymore, if useCubedSphereExchange=F
69        (was already the case with AUTODIFF_EXCH2 defined)
70      - add bj in exch2 arrays and S/R.
71      - can now use pkg/exch2 for regular (non CS) set-up; switch test experiment
72        MLAdjust to exch2 (identical results except with MPI -> truncation diff);
73    o add pkg/longstep for ptracer timestep a multiple of U/V/T/S timestep
74      - adds deltaT argument to the subroutines TIMESTEP_TRACER DWNSLP_APPLY
75        GAD_ADVECTION GAD_CALC_RHS GAD_IMPLICIT_R GAD_SOM_ADVECT
76      - verification experiment natl_box.longstep
77    o build_options: ifort+mpi_aces optfile (following Constantinos advise):
78      allow different versions of ifort (8 or 9) and different versions
79       of mpi (mpich or mpich2) to be used with the same optfile.
80      requires to load a netcdf module and set MPI_INC_DIR (see comments inside
81       optfile). Change testing scripts (example_scripts/ACESgrid) accordingly.
82    o pkg/seaice:
83      fix previous modif (3-level field removed) for old-pickup reading
84    
85    checkpoint61r
86    o pkg/seaice:
87     - clean up the 3-time levels of UICE,VICE,HEFF,AREA in three steps:
88      1. introduce fields for time step (N-1)
89      2. do not use levels 2 and 3 anymore (but keep them)
90      3. replace 3D versions of UICE,VICE,HEFF,AREA by 2D versions. This
91         includes changes to pkg/thsice/thsice_get_velocity.F,
92         model/src/external_forcing_surf.F, pkg/obcs/obcs_apply_seaice.F, and
93         pkg/obcs/obcs_apply_uvice.F.
94     - completely remove code for leap-frog time stepping for second order
95       advection
96     - adjusted adjoint accordingly;
97       gradient checks have improved by an order of magnitude!
98    
99    checkpoint61q
100    o pkg/seaice: fix bug in free slip boundary conditons for LSOR solver
101     - the boundary conditions along open boundaries are unclear, because the
102       associated masks are set to zero and are thus treated as closed when
103       applying the slip-boundary conditions.
104     - move initialisation of grid variables from seaice_init_varia to _fixed
105    o adding doc/diags_changes.txt
106    o model/src:
107      do_the_model_io: rename few pkg S/R which are called from do_the_model_io,
108       to avoid "_diags" naming if no relation to pkg/diagnostics.
109      ini_theta,ini_salt: fix (at least compile the code) reading from NetCDF
110       file and only call PLOT_FIELD_XYZ if debugMode=T.
111      remove few PLOT_FIELD_XY calls outside initialisation.
112      remove few unnecessary BARRIER.
113    o pkg/salt_plume: add SaltPlumeSouthernOcean to allow disabling
114      of salt_plume package in Southern Ocean
115    o pkg/thsice:
116     - fix hOceMxL in overlap (needed for sea-ice advection);
117       update output of experiment global_ocean.cs32x15.icedyn.
118    o pkg/seaice:
119     - make the (placeholder-)tracer IceAge a little more meaningful
120      by avoiding ridging of age due to convergent ice flow
121     - add diagnostics for surface temperature, atmospheric and oceanic
122       heat flux, and atmospheric and oceanic ice growth
123    
124    checkpoint61p
125    o eesupp (global_max & global_sum):
126     - add one more element to buffer (start at index 0) for GL_MAX/SUM output;
127     - remove starting & endding barrier (no longer needed)
128    o pkg/mdsio, writelocal:
129       works also in multi-threaded when LOCBIN_IO_THREAD_SAFE is undefined
130       (remove the STOP): uses shared buffer IO to store data from all threads
131       and then let master-thread write nThreads tiles.
132    o pkg/mdsio (read/write field):
133     - tiled IO done in 1 piece (all levels at a time);
134     - new header file "MDSIO_BUFF_3D.h" with 3-D buffers.
135     - multi-threaded: allow to read/write local (non-shared) array
136       (was already working with singleCpuIO ; now works also without);
137       => no longer needs barrier call after reading a file (added inside
138       mds_read/write field).
139     - move barrier calls outside gather/scatter_2d to mds_read/write_field
140    o pkg/obcs/exf
141      - exf_getffieldrec.F: add a few ". _d 0" and
142                            add code to catch the case fldperiod = 0.  
143      - obcs_precribe_read.F: change if statements so that they match
144                              the variable type (_RL)
145      - add a separate exf_iprec_obcs to exf_set_obcs (by default equal to
146        exf_iprec) as part of namelist EXF_NML_01
147    o pkg/mdsio:
148      - read/write tiled (local) files: read/write 1-level tile chunk at a time
149        (instead of segment of length sNx); expected to speed up tiled IO.
150    o pkg/exch2:
151      - take buffer copy from/to array out of S/R exch2_send/recv into new
152        S/R exch2_put/get ; Exch of local variable now works with MPI+MTH
153        (tested by removing commom block statement in SOLVE_FOR_PRESSURE.h).
154      - ad version of send/recv no longer needed (but needs exch2_ad_put/ad_get)
155      - simplify argument list of S/R exch2_get_uv_bounds and exch2_get_scal_bounds
156        (which replaces exch2_get_recv_bounds & exch2_get_send_bounds) by
157        including Topology header file (and common blocks).
158      - implement EXCH_IGNORE_CORNERS in scalar exchange (rx1);
159        remove 2nd exch call in exch2_s3d_rx (no longer needed).
160      - document S/R arg. list (+ update some comments)
161    o pkg/seaice:
162      - added SEAICE_CLIM_AIR code, which permits modulation of surface air
163        temperature and humidity over sea ice based on climatological values.
164      - clean up computation of Hibler+Bryan (1987) stress coupling for the case
165        of LSR (this change is expected to change the results slightly because now
166        it uses slightly difference moduli from the second last LSR solution, but
167        that is more consistent with the stress computations; this part of the code
168        is not tested in the verification experiments)
169      - fix diagnostics for flux of ice in case of B-grid
170      - turn strain rates eij and press into global fields within global
171        common block in SEAICE.h for more straighforward diagnostics
172      - fix diagnostics for principal stress components, press, zeta, eta
173        to give something meaning full
174    o change tiling of global_ocean.cs32x15 (12 tiles, 32x16) and generate
175      new output (all 4 tests) using default rotationPeriod.
176    o pkg KPP:
177      - add flag (LimitHblStable) to avoid limiting BL depth under stable conditions
178      - fix vertical indices in RI_IWMIX (match between KPP grid from 0 to Nr+1
179        and normal grid from 1 to Nr)
180    o Fix computations of L4rdt in mom_calc_visc.F
181    o eesupp:
182      new S/R ALL_PROC_DIE (like EEDIE, without irrelevant threads err msg):
183      should be called before a "stop" if we know that all process are going
184      to stop; if one Proc does call this S/R, will hang in MPI_FINALISE.
185    
186    checkpoint61o
187    o pkg/exch2: change check_depths to issue just a warning (instead of error+stop)
188    o model/src/ini_curvilinear_grid.F:
189       compute angleSin/CosC when they are not read from a file
190    o pkg/seaice:
191       add pseudo time stepping for LSOR
192    o pkg/exch2:
193       temporary fix for exch2_s3d_rx; update results of exp. hs94.cs-32x32x5.impIGW
194    o pkg/seaice:
195       Adding separate sea ice albedo, drag coefficients, and HO in Southern
196       Ocean from those in Arctic Ocean.  See *_south in SEAICE_PARAMS.h
197    o SingleCpuIO:
198       fix bug put before chkp61n (May 11), when more than 2 MPI cpu are used.
199    o pkg/seaice:
200       put exchanged variable in (local) common block for MPI+Multi-Threads
201       to work (necessary with exch1, and for now with exch2 too).
202    o verification: to get more experiments tested with mpi, mth and mpi+mth,
203      change tiling of:
204       aim.5l_Equatorial_Channel, aim.5l_LatLon, dome, exp4, global_ocean.90x40x15,
205       hs94.cs-32x32x5, MLAdjust, offline_exf_seaice & tutorial_plume_on_slope
206      update output of exp:
207       exp4, global_ocean.90x40x15(+.dwslp), MLAdjust(all 5),
208       tutorial_plume_on_slope and hs94.cs-32x32x5 (use default rotationPeriod)
209      + ideal_2D_ocean: use default rotation period + test Global_Sum_SINGLECPU
210                       (note: output.txt generated on faulks using only 1 tile)
211    o eesupp & mdsio (SingleCpuIO):
212     - remove MISSING_TILE_IO (from MDSIO_OPTIONS.h), replaced by run-time
213       parameter "W2_useE2ioLayOut" (read from file "data.exch2").
214       Note: was not effective for globalFile & useSingleCpuIO=F; now fixed.
215     - move MDSIO_SCPU.h (pkg/mdsio) to EEBUFF_SCPU.h (eesupp/inc).
216     - fix GLOBAL_SUM_SINGLECPU when using Exch2; re-use same buffers and same
217       gather/scatter S/R as with SingleCpuIO (=> 1 less 2D global RL array).
218    o pkg/exch2:
219     - new code to set-up W2-Exch2 topology (replace matlab-topology-generator):
220       read parameter file "data.exch2" if it exists; otherwise try default regular
221       cube without blank-tile; new header file "W2_EXCH2_SIZE.h";
222     - update matlab-topology-generator (exch2_setup_cs6_print.m) to be compatible
223       with new code (not to be used, just as a backup solution).
224     - add examples (e.g., for lat-lon-cap_120) of parameter file "data.exch2"
225       in utils/exch2/input.
226    
227    checkpoint61n
228    o eesupp & mdsio (SingleCpuIO):
229      - move mapping to global io-buffer inside gather_2d/scater_2d: this save
230        memory (1 less 2D global RL array); skip 1 buffer copy; and only send/
231        receive real*4 array (instead of real*8) to read/write 32.bit files.
232        (new template for gather_2d/scater_2d, new set of S/R MDS_PASS_R4,8toRL,S
233         and remove new mapping S/R)
234    o pkg/mdsio: in preparation for topology-generator within pkg/exch2:
235      - Change declaration of SingleCpuIO buffer, reduced to only 1 dim.:
236        xyBuffer_size, which is set to W2_ioBufferSize from W2_EXCH2_PARAMS.h
237        when using exch2. Add S/R to map global io-buffer to global model array.
238      - uses exch2_global_Nx,y instead of exch2_domain_nxt,nyt.
239    
240    checkpoint61m
241    o write_utils : change WRITE_1D_R8 to WRITE_1D_RL
242      and add 3 other S/R for other types (R4,R8,RS).
243      Change calls to WRITE_0D/1D_R[4,8,S,L] to match the type of argument.
244    o eesupp/inc/CPP_EEMACROS.h (EXCH & GLOBAL_SUM/MAX macros):
245     - ensure suffix (_R4,_R8,_RS,_RL) correspondance between macro and S/R ;
246     - reduce number of macro definitions (keep only those which are used);
247       can always call directly the corrresponding S/R if needed.
248     - everywhere in the code: change macros (EXCH & GLOBAL_SUM/MAX) suffix
249       _R4/_R8 to _RS/_RL when applied to _RS/_RL variable.
250     Fixed wrong type of arg in:
251       atm2d/put_ocnvars.F cheapaml/cheapaml.F ocn_compon_interf/ocn_apply_import.F
252       ctrl/ctrl_map_ini_ecco.F seaice/seaice_do_diags.F seaice/seaice_model.F
253     To fix: global_sum of var in common block is wrong (multi-threaded) in:
254       dic/dic_atmos.F ebm/ebm_area_t.F ebm/ebm_zonalmean.F sbo/sbo_calc.F
255     To fix: aim_v23/aim_do_co2.F (BARRIER & GLOBAL_SUM within bi,bj loops)
256    o adjustment.cs-32x32x1: test "blank tiles" when compiling with mpi; 2nd
257      "nlfs" mpi test is going to stop when checking for unconnected tile egdes.
258    o eesupp/src: new S/R to stop everyone when 1 (or more) Proc. find an error
259    o pkg/exch2: new S/R EXCH2_CHECK_DEPTHS to check that unconnected tile
260      edges are closed (zero depth); might happen with "blank tiles";
261      for now, disabled if using OBCS.
262    o tools/gemake2: delete modifs from March 27-29 2009 (with option "-mpi":
263      link *_mpi files from "MODS" dir) to return to a strait-forward behavior.
264    o move read_write.F to write_utils.F ; new parameter (maxLengthPrt1D)
265      to reduce length of 1.D array print in STDOUT.
266    o adjustment.cs-32x32x1: changed to oceanic test with 1 continent
267      + use 48 tiles (16x8): this will allow to test "blank tiles".
268    o start to test MPI + multi-threaded (change testreport to skip tests
269      where number of tiles do not match).
270    o genmake2: add option "-omp" to turn on Open-MP ;
271      passed to testreport (if using -mth) ; merge few (*+mth) optfiles.
272    o pkg/exch2 (+ utils/exch2): ignore blank tiles (instead of removing them)
273      and keep the original tile numbering. Note: compatible with old
274      W2_EXCH2_TOPOLOGY.h & w2_e2setup.F topology files.
275    
276    checkpoint61l
277    o Overlaps had been forgotten in calculating ijk keys : fixed
278    o fix cyrus makedepend for gcc 4.4
279    o experiment fizhi-cs-aqualev20:
280      switching to new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE)
281      and generate new output. Note: new output is much closer to the old
282      one (v1.8) generated with pgf77 -O2 on Mar 14 2007 than it is from
283      the previous one (v1.9) generated with pgf77 -O0 on Jun 13 2007.
284    o pkg/fizhi:
285     - change to avoid indices going deliberately over array-bounds
286     - remove unnecessary MPI stuff
287     - perpetual spring equinox with "#define FIZHI_USE_FIXED_DAY"
288     - new version of S/R GETPWHERE available with #define TRY_NEW_GETPWHERE:
289       does not go over array-bounds and therefore returns reliable output.
290     - in fizhi_driver.F & fizhi_turb.F, fix "get_alarm" calls:
291       this S/R has 4 output arguments, which are used inside "get_alarm";
292       when it is called with the same variable "ndum" in place of several
293       output arguments, this produces weird side effect inside "get_alarm"
294      (e.g., datein=dates(n) is overwritten by timein=times(n) since both
295       datein & timein, resp. 2nd and 3rd arg., are pointed to the same "ndum"
296       address) and produces error.
297    o tools/gemake2: (March 27-29 2009)
298      with option "-mpi": link *_mpi files from "MODS" dir (this is what
299      testreport does).
300    o lab_sea experiment: change from 2x1 tiles to 2x2 tiles and regenerate output
301    o pkg/seaice: fix bug in new version of S/R SEAICE_LSR.F:
302       update lab_sea.lsr & lab_sea.salt_plume results
303    o pkg/seaice:
304      Major overhaul of the LSOR solver: change discretization from original
305      finite differences to finite volume. The old routine is still in the
306      file seaice_lsr.F and can be turned on with the CPP-flag
307      SEAICE_OLD_AND_BAD_DISCRETIZATION
308      Along with this change, the discretization of the strain rates is changed.
309      The same flag turns on the old discretization in seaice_calc_strainrates.F
310      All verification experiments with seaice are affected (except for
311      seaice_exf_offline); global_ocean.cs32x15/input.icedyn recovers the old
312      results by setting the above flag.
313      Further changes involve changes in defaults:
314      - ALLOW_FLOODING is defined and turned on by default
315      - SEAICEadvSnow = .true. is now the default
316      - SEAICEadvSalt = .true. is now the default
317      - SEAICEadvAge  = .true. is now the default
318      - SEAICE_clipVelocities  = .false. is now the default
319                                         (as per J. Zhang's recommendation)
320      - B-grid, and thus not tested: SEAICE_TEST_ICE_STRESS_1/EXPLICIT_SSH_SLOPE
321        is defined, SEAICE_TEST_ICE_STRESS_1 is renamed into SEAICE_BICE_STRESS
322      - seaice_growth: replace computation of UG by a simple copy from wspeed
323    
324    checkpoint61k
325    o pkg/seaice: a few bug fixes mostly concerning the metric terms:
326      seaice_lsr: fixed a few metric terms,
327                  affects lab_sea.lsr, lab_sea.salt_plume, seaice_obcs
328                  add more debugging diagnostics
329      seaice_evp: removed superfluous many metric terms of FV discretization
330                  of stress divergence
331                  affects lab_sea, lab_sea.hb87
332      seaice_ocean_stress: removed superfluous many metric terms of FV discretization
333                  of stress divergence for non-evp solver
334                  (this part is not tested anywhere)
335      seaice_calc_strainrates: fixed a bug in no-slip boundary conditions,
336                  they were effectively only half slip
337                  affects lab_sea.hb87
338      updated all relevant verification experiments (except lab_sea//output_adm.txt
339        which was left over, but fails at level 7 & 6)
340    
341    checkpoint61j
342    o pkg/seaice: turn a few hard wired parameters into run time parameters
343    o pkg/seaice/exf/monitor: turn netcdf coordinate variable T into model
344      time in seconds as promised by the usints in seaice_monitor and exf_monitor
345    o pkg/mnc: fix the coordinate variables for multi-tile curvi-linear grids
346      that are not cubed-sphere grids
347    o pkg/seaice: fix a bug for the rare case of SEAICE_VECTORIZE_LSR
348    o pkg/ctrl:
349      fix bug in ctrl_depth_ini.F (EXCH_XYZ was applied to 2-D field xx_r_low)
350    o non-hydrostatic (calc_gw.F):
351      fix viscA4 on CS-grid + fix diagnostics: Wm_Diss & Wm_Advec
352      update output of exp. global_ocean.cs32x15.viscA4
353    o remove backward compatibility for thetaMin,phiMin
354      (replaced by xgOrigin,ygOrigin on Jan 27, 2009)
355    o pkg/exf: fix a serious bug in exf_set_uv.F: do a rotation of the
356      interpolated wind field not only for curvilineargrid=.true., but also
357      for a rotated grid (rotateGrid=.true.)
358    o pkg/exf: add capability to bypass interpolation for runoff
359      by setting yet another CPP-flag
360    o eesupp/src, B-grid exchange:
361      add simple (6 tiles, non MPI) CS exch + standard interface S/R.
362    o autodiff
363      new CPP option ALLOW_TAMC_SINGLEPREC_COMLEV
364      allows to switch to single-prec common blocks;
365      corresponding switch occurs in tamc.h, integer isbyte
366      TAF store directivs "byte" and "kind" seem equivalent;
367      Most tamc.h have been updated correspondingly.
368    
369    checkpoint61i
370    o autodiff:
371      fix autodiff_sore/_restore indices for obcs
372      (spotted by I. Hoteit, M. Mazloff)
373    o pkg/autodiff, pkg/ctrl:
374      Add flag to reduce all tapelev I/O to single-prec.
375      In data.ctrl set
376        doSinglePrecTapelev = .TRUE.
377    o model/src/ini_curvilinear_grid.F, new grid-file format without EXCH2:
378      check in hack for SX8 compiler (for dxV, dyU); remove it afterwards.
379    o pkg/shelfice: fix bug with SHELFICEconserve flag, prepare for
380      real fresh water flux (not yet)
381    o pkg/mdsio & rw:
382     - add argument & option to S/R MDS_WRITEVEC_LOC (avoid Open/Close & write-meta)
383     - add simple interface S/R to MDS_WRITEVEC_LOC in pkg/rw: WRITE_GLVEC_RX.
384    o pkg/flt:
385     - replace FLT_INIT by 3-steps standard initialization S/R: readparms,
386       init_fixed & ini_varia.
387     - clean-up & simplify linear interpolation S/R:
388       move flt_bilinear.F -> flt_interp_linear.F ; add arg. myThid.
389     - fix some indices (mainly vertical index) ; add IMPLICIT NONE.
390     - more efficient I/O, using new options of MDS_WRITEVEC_LOC S/R.
391     - add vert. coordinate & horiz. indices to output files.
392     - change vertical position in initial condition, from index to depth [m].
393     - store horizontal (decimal) indices i,j in common block (instead of coord. x,y)
394       (easier to get to a curvilinear grid) ; delX,delY no longer used.
395    o pkg/ggl90: a few modifications:
396     - fix bottom boundary condition, and interpolation of KappaE
397       near top and bottom
398     - use same set of viscosity/diffusivity for TKE/momnetum/tracer
399     - add smoothing option as in Blanke and Delecluse (1993) (--> ALLOW_GGL90_SMOOTH)
400     - add a few options for mixing-length upper limit (--> mxlMaxFlag)  
401    o rename thetaMin,phiMin -> xgOrigin,ygOrigin
402      (maintain temporary backward compatibility, until next checkpoint)
403    
404    checkpoint61h
405    o pkg/diagnostics with "periodic averaging diagnostics":
406      fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
407    o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
408    o pkg/obcs: fix loop ranges for balancing code
409    o pkg/flt:
410     - improve criteria for finding which tile owns a float.
411     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
412    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
413      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
414      with ocean biogeo)
415    o pkg/flt:
416     - do some cleaning and fix the restart ;
417     - add output.txt in flt_example/results to get this pkg tested.
418    o genmake2: add an EXTENDED_SRC option and flag.
419       for now, cannot be turned on on command line (only through genmake_local)
420    o pkg/mdsio: read/write vector:
421     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
422     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
423       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
424     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
425      (drop to 4 digits matching for grad). But this test does not look very
426      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
427    
428    checkpoint61g
429    o pkg/flt:
430      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
431       + make OPTIONS file more standard.
432      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
433      - fix _BYTESWAPIO CPP-Flag
434      - standard reading of file-parameter "data.flt"
435      - fix argument list of S/R FLT_RESTART
436      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
437    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
438    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
439      a still unfixed compiler/optimization bug
440    
441    checkpoint61f
442    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
443      update results of global_ocean.cs32x15.icedyn test.
444    o move getcon.F from model/src to pkg/fizhi.
445    o pkg/exf: add parameter for extrapolation of temp up to the surface
446       and option to prevent negative evap (in bulk_largeyeager04 only).
447    o Prather Advection scheme: fix tracer conservation for divergent flow
448      (e.g., when using NonLin Free-Surface).
449    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
450    o gmredi (Visbeck-variable-K):
451     - add more parameters to Visbeck-variable-K.
452     - use a 5 points average for dSigmaR in Visbeck-K calculation
453       (more "homogenous": same stencil and same weights as in dSigmaH)
454     - update output of ideal_2D_oce experiment.
455    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
456      (#undef REAL4_IS_SLOW)
457     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
458       coordinate variable
459     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
460       (surface forcing fields), removes some of the functionality
461     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
462     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
463       probably not all: copy _RS surface flux fields to RL field before
464       calling DIAGNOSTICS_FILL
465     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
466       real*4 (CALL EXCH_*_RS) versions.
467     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
468       (generate new output).
469    
470    checkpoint61e
471    o gmredi (Visbeck-variable-K):
472      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
473      - change computation of Visbeck-K where Slope > Smax :        
474        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
475        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
476    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
477      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
478    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
479    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
480      does not become too large (to avoid precision problems in implicit-diffusion
481      solver); update ideal_2D_oce output.
482    o pkg ggl90:
483      - in ggl90_cal.F: compute only one set of visc/diff, used to
484        step forward TKE/T/S/momentum
485      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
486        have Prandlt =1)
487    o gmredi (fm07):
488      - add lower limit on Transition layer thickness + lower limit on 1/lambda
489      - allow to set few more params from data.gmredi
490    o pkg ggl90:
491          - add missing sqrt(2) factor in computation of mixing length
492            scale in ggl90_calc.F
493            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
494    
495    checkpoint61d
496    o adjoint modifs
497      - adapt to new field rhoInSitu
498      - allow to revert from StoreDynVars2D, StoreDynVars3D
499        to individual fields
500        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
501    o store 3-D (in-situ) density in commom block (DYNVARS.h)
502     - save 1 rho computation.
503     - no longer modify T & S inland when using down_slope pkg.
504    o gad_som : allow to switch to SOM advection for T & S without corresponding
505      pickup files (using new S/R: MDS_CHECK4FILE).
506    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
507      (for useSingleCpuIO to work in multi-threaded)
508    o pkg/shelfice:
509     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
510       with SHELFICEtopoFile in data.shelfice
511     - move code for reading ice shelf topography and modifying hFacC into separate
512       subroutines of the shelfice package
513     - separate initialisation of "fixed" and "variable" variables
514     - kTopC is not (yet) replaced by kSurfC, although this is possible
515    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
516    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
517      and rename:
518      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
519      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
520    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
521    
522    checkpoint61c
523    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
524      to add mass source/sink of fluid in the interior (3-D generalisation
525      of oceanic real-fresh water flux).
526    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
527    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
528    o new pkg: down_slope
529      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
530      - presently, modify T & S inland (dwnslp_calc_rho.F).
531        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
532      - implementation for ocean in P-coords not tested.
533      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
534    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
535      (to facilitate conversion of oceanic pkg to p-coordinate).
536    o change FIND_RHO to FIND_RHO_2D :
537      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
538    o new pkg: cheapaml
539    
540    checkpoint61b
541    o exch2:
542      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
543      - no longer depend on the order sequence (N,S,E,W).
544      - 3rd exchange no longer needed (tested with 24 tiles).
545      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
546      - exch_UV_A-grid readily available (but not yet tested).
547      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
548      (both are no longer needed) in exch_uv: no effect in forward run; but
549       get truncation error differences with adjoint exch.
550    o exch2:
551     - change index-bounds storage (moved from target to local tile,
552       more intuitive this way) ; rename/remove some variables.
553     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
554    
555    checkpoint61a
556    o exch2/matlab-topology-generator:
557      fix bug in index bounds for N-S internal exchange (hard to tell if this
558      had any effect on the solution).
559    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
560      is exceeded
561    o testreport: modify syntax of awk, so that it works also with
562      awk, and not only with nawk and gawk
563    
564    checkpoint61
565    o autodiff
566      Change default for TAF usage by removing argument '-nonew_arg'
567      This changes TAF subroutine argument list (ordering of active var.)
568      Omission of this flag leads to incompatibility w.r.t. TAMC
569      To restore TAMC-compatibility, need following modifs:
570      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
571      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
572      Tested TAF version is 1.9.22
573      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
574    
575    checkpoint60
576    --->>> This is the last checkpoint for which generating the adjoint
577    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
578    --->>> by default.
579    --->>> Future checkpoints will ommit this flag by default.
580    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
581    o pkg/grdchk: Add gradient check to etan0 perturbations.
582    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
583    o pkg/autodiff: more flexibility in zeroadj.
584      model/src: modifying do_oceanic_phys.F accordingly.
585    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
586    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
587      special setup of gmredi for which the adjoint is stable
588      enough for parameter optimization.
589    o bridging the gap between eddy stress and GM.
590      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
591          along with a change in CPP option (now ALLOW_EDDYPSI).
592      -> when using GM w/ GM_AdvForm:
593          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
594          is applied either in the tracer Eq. or in momentum Eq.
595          depending on data.gmredi (intro. GM_InMomAsStress).
596      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
597      The key modifications are in model/src/taueddy_external_forcing.F
598      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
599    
600    checkpoint59r
601    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
602      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
603      fix option to read coriolis(@ cell-corner) from files with CS-grid.
604    o pkg/mnc: add some attributes to standard 1D-coordinate variables
605    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
606      mass points, when using mnc for output
607      - add runtime parameter (missing_value, missing_value_int) to override
608        default (which is the value of getcon('UNDEF'))
609    o pkg/mnc: prepare mnc for the actual use of missing values with the
610      diagnostics package: small fix in mnc_cw_readwrite.template and more
611      initialisation of never used fields
612      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
613      versions
614    o pkg/thsice/thsice_ini_vars.F added default initial values so that
615      thermodynamics sea ice solver does not blow up when some initial fields
616      are missing.
617    o move from external_forcing_surf.F to ini_forcing.F
618      the p-coord. hack consisting in using pLoad to set phi0surf ;
619      update output of tutorial_global_oce_in_p (affected @ truncation level).
620    o Freshen up a bit hs94.1x64x5, notably:
621      remove rotationPeriod and tRef=5*0. (adjoint only), and add
622      exactConserv=.TRUE.
623    o pkg/generic_advdiff:
624      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
625      applies to files where Temperature & Salinity 2nd Order moments are used.
626    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
627      this uses a dynamically allocated internal state data structure
628      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
629      and requires a fortran 90 compiler
630    
631    checkpoint59q
632    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
633       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
634    o Refresh tutorial_global_oce_biogeo, notably:
635      - change bathymetry (put back seamounts in ACC, use hFacs)
636      - change EOS (POLY3 --> JMD95Z)
637      - use Bryan-Lewis vertical diffusivity
638      - use multidimensional advection
639      - remove old virtual virtual in dic pkg, now done through ptracer pkg
640      - change a couple of parameters in dic pkg
641    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
642    o pkg/obcs: change default to OBCSfixTopo = .true.,
643      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
644      - replace "debugMode" with "debugLevel .GE. debLevB"
645    o implementation of TAF directives for gchem,cfc,dic
646    o remove "exp5" (replaced by tutorial_deep_convection).
647    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
648      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
649      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
650      --> changes results in exp4, seaice_obcs
651    o tutorial_deep_convection :
652      update the set-up and increase resolution and domain size ; start
653      from pseudo initial conditions = output at t=120mn in order to see
654      something happening when running testreport.
655    o pkg/seaice: add os7mp as an advection scheme
656                  add check for advection schemes
657                  add a flag for restoring T and S underneath sea ice
658    o pkg/my82: add netcdf-support and diagnostics
659    o thsice pkg:
660      - Now hsMax limits snow height by turning it into ice following
661        flooding scheme (and now conserving energy)
662      - Slight rewriting of the formula in thsice_calc_thick.F
663      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
664      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
665    
666    checkpoint59p
667    o gchem / dic / cfc :
668      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
669      - add new parameter files: "data.dic" & "data.cfc" ;
670      - various re-arrangement in initialisation & header file ;
671      - fix tutorial_global_oce_biogeo for multi-threaded test.
672    o pkg/dic: test for "pickup_dic" file when restarting ;
673      if no pickup-file, can restart with a re-initialised pH (same as it did
674      before) providing pickupStrictlyMatch is set to False.
675    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
676      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
677    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
678      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
679    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
680     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
681       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
682    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
683       scheme to use for vorticty-term ;
684     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
685       (with default selectVortScheme, return to original discretisation)
686     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
687    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
688    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
689      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
690      also fix diagnostics VISCAHW & VISCA4W.
691    
692    checkpoint59o
693    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
694    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
695      move a few statemens out the main loop into separate loops
696    o pkg/shelfice:
697      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
698        (kg/m^2/s), does not break tests, because in verification/isomip,
699        rhoConstFresh=rhoConst (by accident)
700      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
701      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
702        new file model/src/seawater.F, so that they are available for all pkgs.
703      - convert potential temperature into in-situ temperature. This changes the
704        isomip tests => update tests
705    o add a flag writePickupAtEnd (default=true) to be able to suppress
706      writing a pickup at the last timestep
707    o tools/mpack-1.6 :
708      - disable automake (not working) and autoconf (not needed).
709      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
710        also cleaner with much less compilation warnings.
711    o pkg/profiles:
712      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
713      (for "less than 32 characters name" compiler requirement)
714    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
715      conditions that have a different sampling frequency than S/T/U/V obcs
716    o pkg/diagnostics (stats-diags):
717      - fix global Min/Max in case 1 processor get only empty tiles
718    o genmake2: replace (4 times)
719         make genmake_tc_1.o >> genmake_warnings 2>&1
720      with
721         COMM="$CC $CFLAGS -c genmake_tc_1.c"
722         echo $COMM >> genmake_warnings
723         $COMM >> genmake_warnings 2>&1
724      to make genmake2 always see the value of CC as specified in the optfile.
725    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
726      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
727      - modify verification advect_cs test to test SOM-advection on CS-grid.
728    o pkg/ctrl:
729      - Rewrite of ctrl_map_ini_ecco.F,
730        introducing a generic routine (ctrl_map_ini_gen.F).
731      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
732    
733    checkpoint59n
734    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
735      number in dedicate array "hdiag":
736      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
737        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
738      - many small changes (integer format) for large number of diagnostics
739      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
740        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
741    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
742      usingSphericalGrid, this allows to define the rotated grid coordinates
743      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
744      geographical coordinates according to the inverse of the rotation defined
745      by the Euler angles, so that Coriolis parameter and online-interpolation by
746      exf works with the geographical coordinates on XC/YC/XG/YG.
747      Naturally, this feature does not work with all packages, so some
748      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
749      profiles), because there the coordinates are assumed to be regular
750      spherical grid coordinates.
751    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
752      - introduce isopycnal diffusion coefficient control.
753    o tools/adjoint_options:
754      - additional control vector components.
755    o pkg/mnc: have mnc create marginally meaning full coordinate variables
756      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
757    o pkg/mypackage:
758      - add example of read/write pickup for state-var ;
759      - add entry points to the main code for state-vars diags & write-pickup.
760    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
761      transitions for useExfYearlyFields
762      - add new subroutine that determines the file to read from for
763        use*YearlyFields = .TRUE. and .FALSE.
764      - add a verification experiment to global_with_exf that tests
765        useExfYearlyFields with USE_EXF_INTERPOLATION defined
766    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
767      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
768      subroutines (which could be generated from a template, because they are
769      almost identical), for now they are included in obcs_prescribe_read.F for
770      simplicity
771    o pkg/exf:
772      - add a little more diagnostic to exf_interp_read (in analogy to
773        mds_read_field, can be turned off with debugLevel < debugLevA=1)
774      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
775        ugly but fast by unrolling short inner loops, inserting a unroll=8
776        directive in routine lagran, and splitting a loop and making do while the
777        outermost loop (the latter requires the intoduction of index arrays)
778    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
779    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
780      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
781    o verification/seaice_obcs: updated for restart test and latest options
782    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
783      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
784      for now this is only available for the C-grid code and also within
785      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
786    
787    checkpoint59m
788    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
789      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
790    o gad_som : fix flux output (& diagnostics) to have same units as other  
791      advection scheme fluxes (was previously multiplied by deltaT).  
792    o added verification/seaice_obcs both to test seaice open boundaries
793      and to provide an example matlab scrpt for generating them
794    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
795    o pkg/salt_plume: clean up salt_plume_frac.F to
796      remove redundancy in PlumeMethod 1 and 4
797    o pkg/kpp: added saltplume diagnostics
798    o pkg/obcs and pkg/seaice:
799      - do not set uice and vice to zero when OB*icefile are unspecified
800      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
801      - moved seaice tracer obcs after call to seaice_growth
802    o pkg/salt_plume: added various options for salt plume depth
803      criterion and for vertical distribution of the salt
804    
805    checkpoint59l
806    o pkg/ptracers: new version of ptracers pickup:
807      read meta file and write only fields which are needed to restart.
808      ( same logic as main pickup file ; also using pickupStrictlyMatch )
809    o pkg/seaice:
810      - add timescale for melting due to warm mixed layer as a means of
811        setting SEAICE_availHeatFrac more conveniently
812      - add a CPP-flag/runtime parameter check for flooding algorithm
813      - reformulated availHeat in seaice_growth.F to be independent of AREA
814    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
815      unit changes
816    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
817    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
818      SX vector computer.
819    o pkg/seaice:
820      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
821        seaice forcing fields can now be read only through pkg/exf
822      - removed some unused halos
823    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
824    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
825      or U/VICE from U/VWIND before computing U/VSTRESS
826    
827    checkpoint59k
828    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
829      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
830    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
831      all experiments pass when compile with un-initialised var. checking option.
832    o added pkg/salt_plume
833    o script to test restart (for now, in MITgcm_contrib/jmc_script)
834    o pkg/seaice: new read/write pickup version.
835      read meta file and write only fields which are needed to restart.
836      ( same logic as main pickup file ; also using pickupStrictlyMatch )
837    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
838    o lab_sea.hb87: modify the domain & update output.hb87.txt :
839      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
840      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
841      process. Fixed here by closing the domain at the Northern boundary.
842    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
843    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
844      a set of consecutive levels in/from a 3-D array.
845    o pkg/ptracers:
846      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
847      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
848    
849    checkpoint59j
850    o in pkgs: dic, obcs, offline, rbcs:
851      standard way to compute coeff. for time interpolation between 2 time reccords
852      which retains full precision (& make results less dependent on compiler).
853      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
854    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
855      packages instead of reading ice cover and wind speed separately
856    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
857     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
858      to allow to compile customized code before the update)
859    o cleaning-up:
860      - fix CPP instruction syntax in pkg/obcs
861      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
862        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
863      - fix some threads issue in IO parts.
864    o pkg/dic:
865      - add tons of "_d 0" (--> much better testreports !)
866       and then update outputs of tutorial_global_oce_biogeo
867    o pkg/mom_fluxform:
868      add a special version of momentum advection intended to conserve momentum
869      next to a bathymetry step or a coastline edge. (default = off = #undef)
870    o new read/write pickup version:
871      - for now, only implemented for main (mdsio) pickup file.
872      - write out only what is needed to restart; merge pickup_nh , pickup_ph
873        and main pickup together.
874      - read meta file; read only what is needed to restart; stop if a field
875        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
876        if it make sense (even if the restart is not perfect).
877      - if no meta file, assume that pickup to read corresponds exactly to
878        a pickup that would currently be written.
879      - read pickup written in the old format (until checkpoint59i) if it
880        recognizes an old meta file (no field-list).
881      - add a meta file in exp. which starts from a pickup: 2 cases:
882        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
883         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
884        b) a meta file describing the content of the associated pickup file
885         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
886    o pkg/mdsio & pkg/rw:
887      - new routine to read a meta file ; new set of routine to read
888        Multiple-fields file (with meta file).
889    o added open boundary conditions capability for seaice
890        HSNOW, HSALT, UICE, and VICE
891    
892    checkpoint59i
893    o adjoint:
894      * fix multiDimAdvection adjoint
895        (partial recomputation problem by TAF for fVerT(:,:,kDown)
896        and comlev1 size definition (maxpass vs. max. number of tracers)
897      * verification/global_ocean.90x45x15 adjoint now tests
898        NLFS and multiDimAdvection using DST3 (=30)
899      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
900    o pkg/kpp: add "_d 0" to real constant (if missing);
901      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
902      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
903    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
904      for internal parameters related to restart process (formerly from PARAMS.h)
905      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
906    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
907      as argument. (only atm2d & obcs write_pickup have not yet been updated)
908    o pkg/monitor:
909      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
910      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
911      - account for deep Atmosphere factor and density factor (anelastic)
912    o added open boundary conditions capability for seaice HEFF and AREA
913    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
914      thermodynamics
915      - requires a little reorganization, which affects the testreport results
916        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
917        so that now the conservative form is tested
918      - add a few comments
919    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
920    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
921    o add new diagnostics to seaice: advective, diffusive fluxes (only for
922      multidim-advection, for scheme 2 they are not filled) and transports,
923      thermodynamic growth rates
924    o change units of EmPmR (inside the code, + within coupling interface)
925      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
926      Affects results @ truncation level (cg2d match) and update output of
927       experiments: lab_sea(6), global_ocean.90x40x15(10),
928      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
929      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
930      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
931      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
932    
933    checkpoint59h
934    o pkg/exf:
935      - improve vectorization by moving if-statement out of loops in
936        exf_mapfields, exf_radiation
937      - exf_bulkformulae.F: introduce 2D fields and vectorize code
938    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
939    o testreport:
940      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
941        monitor & update offline_exf_seaice exp. output.
942      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
943    o pkg/seaice:
944      - bug fix in the evp solver: boundary conditions were affected be
945        masking of zMax/zMin (changes results)
946      - minor bug fix in boundary conditions in seaice_calc_strainrates
947        (changes results for no_slip)
948      - seaice_lsr.F: make interpolation of eta dependent on boundaries
949      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
950      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
951        stress formulation and no-slip boundary conditions
952    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
953      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
954    o pkg/seaice: a first HSALT time stepping equation has been checked in
955    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
956      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
957      without requiring DO-IF statements
958    o pkg/thsice:
959      use continuous power-law function for partition of energy between lateral
960      melting/freezing and thinning/thickening ; old code using step function
961      still available with #undef THSICE_FRACEN_POWERLAW
962      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
963    o testreport: change AD testing : check against results/output_adm.txt
964      using same scripts as for forward test.
965    
966    checkpoint59g
967    o adjoint testing: in preparation for changing testreport:
968      - output format: cost and grad written on separated lines
969      - ad output results in directory "results" (instead of "results_ad")
970    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
971    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
972    o pkg/ecco: allow user defined cost function contributions
973    o testreport:
974      Allow to choose (per experiment) the list of tested output variables
975       and the main variable (used to issue a pass/FAIL ) ;
976      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
977      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
978      Also modify printing of summary:
979       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
980       b) echo the list of tested variables in the individual summary.txt of
981          each experiment.
982    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
983      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
984      (but still depend on the tile decompostion of the domain).
985    o pkg/seaice: change a discretization detail to make the B-grid code
986      "more symmetric". This change is likely to remove all "ridges/leads" that
987      where quasi-aligned with the grid in B-grid solutions. It may also be
988      the solution to the stress coupling issues with the B-grid.
989    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
990      remove .cvsignore from input dir. (since testreport no longer run here).
991    o pkg/thsice:
992     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
993     - fix reshaping of sea-ice just after advection:
994       melt all the ice only if ice-volume is too small.
995     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
996       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
997     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
998    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
999      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
1000    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
1001      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
1002      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
1003      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
1004      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
1005      -> update output.txt
1006    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
1007     this affects truncation error: -> update output.txt of exp:
1008      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
1009      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
1010    
1011    checkpoint59f
1012    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
1013    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
1014      a bounded range (in forward mode)
1015    o pkg/ecco, ctrl, autodiff and mom_common:
1016     internal parameter controls, completements of implementations
1017    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
1018    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
1019      (not seem any difference in testing results).
1020    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
1021       at face corners.
1022    o pkg/generic_advdiff:
1023     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
1024      loop range indices for computing vertical advection tendency
1025      and do the calculation in the interior only (no overlap) ;
1026      for now, only implemented for SOM advection (to save CPU time).
1027     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
1028    o exch2 adjoint
1029      First set of changes:
1030      - add exch2 hand-written adjoint templates
1031      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
1032        This will require cleanup in pkg/autodiff/*.F
1033        (changed routines currently kept separate in verif. code/)
1034      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
1035        that used to hide exch2 or cubed-sphere specific code
1036        (commented via 'cph-exch2')
1037    o pkg/seaice
1038      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
1039    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
1040       output of global_ocean.cs32x15.thsice .
1041    
1042    checkpoint59e
1043    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
1044      for B-grid vector (not yet tested) and C-grid vector (<- only used
1045      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
1046    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
1047      (#ifdef ALLOW_SALT_PLUME)
1048    o gather_2d/scatter_2d: removed halo regions
1049    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
1050      scheme and the corresponding test case (under front_relax dir). For now,
1051      only available with Skew-flux form and not yet tested in realistic set-up.
1052      adjoint: store directives updated, but gradient checks deteriorated,
1053      so maybe GM/Redi adjoint is now broken.
1054    o seaice adjoint
1055      * add AREA, HEFF, HSNOW as control variable
1056        (should not change lab_sea results)
1057      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
1058    o pkg/seaice:
1059      * added computation of saltFlux in seaice_growth;
1060        For time being, sea ice salinity is assumed constant
1061        contribution of snow flooding to freshening of sea ice is neglected.
1062        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
1063        defaults to 0.0 in order to maintain backward compatibility.
1064        Typical values for SEAICE_salinity are 4 to 10 g/kg.
1065      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
1066      * added SEAICE_availHeatFrac, which specifies fraction of surface level
1067        heat content used to melt or grow ice
1068      * commented out cap of HICE: it helps keep ice thinner
1069      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
1070      * applied OBCS T/S mask to HEFFM sea ice mask
1071    
1072    checkpoint59d
1073    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
1074     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
1075     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
1076    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
1077     and change default value of parameter "GM_Small_Number";
1078     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
1079       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
1080       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
1081    o pkg/ecco: cost function when applying pkg/smooth to controls
1082    o pkg/ctrl: add forcingPrecond run time parameter
1083    o pkg/seaice:
1084     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
1085     - fix bug in metric terms of u-equation in LSR solver (implicit part),
1086       changes verification/lab_sea
1087     - rearrange implicit part of u-equation in LSR solver to make it easier to
1088       read, understand, and debug. This causes changes at the truncation level.
1089     - fix (serious) bug in the boundary conditions (sign error in the implicit
1090       part) of the LSR solver. Changes all LSR results.
1091     - fixed problem with HSNOW initialization to avoid thick snow when AREA
1092       is initilized with small values - does not change lab_sea results.
1093     - added HsnowFile initialization capability
1094    o pkg/smooth: addition to model/src and pkg/ctrl so allow
1095     initialization of pkg/smooth and application to control vector
1096    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
1097    o dependencies: pkg/profiles requires pkg/cal
1098    o pkg/profiles:
1099     - added option ALLOW_PROFILES_GENERICGRID
1100         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
1101         that interpolation information (grid points and coefficients) is provided
1102         within the netcdf input files.
1103         -> sample matlab scripts can be found in MITgcm_contrib/gael
1104         that allow you to prepare netcdf input files.
1105     - also modified: cleaner include statements, cleaner error print statements,
1106       cleaner stops when error, and more tests of the netcdf input files consistency.
1107    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
1108    o pkg/seaice:
1109     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
1110       requires a new routine: seaice_diagnostics_fill.F
1111     - make sure that seaice does not move if not forced (pressure replacement
1112       method, Hibler and Ip, 1995), changes results
1113     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
1114     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
1115       It is turned off by default (=-1.), because it changes the results.
1116     - make it possible to read AREA from a file, too.
1117    
1118    checkpoint59c
1119    o add S/R and diagnostics for oceanic mixed-layer depth
1120    o move GMRedi call after all vertical mixing schemes (including KPP)
1121    o pkg/thsice:
1122     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
1123      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
1124    o pkg/obcs:
1125     - bug fix for balance code
1126    o pkg/seaice:
1127      - allow values of SEAICE_elasticParm > 1
1128      - add new parameter SEAICE_evpTauRelax as an alternative
1129        to SEAICE_elasticParm
1130      - make lsr boundary conditions free slip (by default), changes result
1131      - add code for no slip boundary conditions for lsr
1132      - set minimum of zeta to zero (and not 4e8) (changes results)
1133      - add a cap on AREA after advecting AREA if seaice_growth is not called
1134    o change calculation of Visbeck K:
1135      - no longer depend on tapering scheme; instead, compute slope (limited
1136        by GM_maxSlope). this is equivalent to what was comuted before with
1137        clipping or linear tappering.
1138      - fix vertical averaging (wrong by 1/2 level)
1139      - leave the old version (but will not be maintained) within
1140        #ifdef OLD_VISBECK_CALC / #endif
1141      - update output of exp. ideal_2D_oce
1142    o change error catch in calc_r_star to improve vectorization
1143    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
1144      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
1145    o adjoint:
1146      Re-organized adjoint checkpointing according to Matt Mazloff
1147      (but with modifs/completions/cleanups)
1148      Storing is now bundled into large arrays to optimized I/O
1149      (and second step in cleanup of the_main_loop)
1150    
1151    checkpoint59b
1152    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
1153      - export/import (between ocean & coupler) fields needed for ocean DIC.
1154    o pkg/seaice:
1155      - get rid of three more exchanges seaice_calc_viscosities (required
1156        different loop boundaries in seaice_lsr and seaice_ocean_stress)
1157      - bug fix in seaice_ocean_stress (update of lab_sea required)
1158      - reduce loop boundaries to necessary minimum also in seaice_evp
1159      - go back to the old way of computing deltaC/Z as the adjoint likes that
1160        better
1161    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
1162      passive tracer to an Age Tracer) + update output.txt
1163    o pkg/exf:
1164      - implement A-grid / C-grid selection for wind-stress input files.
1165      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
1166      for now, in exf_bulk_largeyeager04.F only :
1167      - change implementation for case where windspeed + 2. components wind-stress
1168        are read-in. AND use rhoConstFresh to convert evap.
1169    o pkg/seaice:
1170      - use correct EXCH_UV for wind-forcing (on A-grid).
1171      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
1172        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
1173    o pkg/exf:
1174      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
1175      EXF_INTERPOLATION:
1176      - merge global_with_exf/code version of exf_interp_read.F
1177        to the main code ;
1178      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
1179        reading the file ; Important: This options needs to be defined to recover
1180        previous code.
1181        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
1182      - no longer loose real*8 precision along the way when using exf_iprec=64.
1183    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
1184      - change discretisation of evp-solver in order to avoid another exchange
1185        (changes lab_sea) and clean up a little
1186      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
1187        help the adjoint (this also changes the results slightly)
1188      - add a few "_d 0" where they had been missing in seaice_evp.F
1189      - cleaning up: remove unused seaice_calc_rhs.F
1190    o pkg/exf: some cleaning-up:
1191      - change various "constants" into runtime parameters
1192      - cleaned-up Large&Yeager04 routine which should eventually
1193        replace exf_bulkformulae.F (changed names of S/R and CPP)
1194        and merged various ALLOW_ATM_WIND options
1195     only used with thsice pkg (in thsice_get_exf.F):
1196      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
1197        which are used when useStabilityFct_overIce=TRUE (= the default)
1198      - change default values of ice & snow emissivity and scale downward LW
1199        by ice & snow emissivity.
1200    o pkg/thsice:
1201     fix few little problems, in thsice_calc_thickn.F:
1202      - growth vertically (and not laterally) if iceFrac == iceMaskMax
1203      - melt only laterally if hIce < hThinIce (as the comments say)
1204      and in thsice_extend.F:
1205      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
1206      - start to form ice as soon as the minimum ice-volume is reachable.
1207     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
1208      and cpl_aim+ocn
1209    o pkg/kpp
1210     - move computation of surface related input fields to KPP into a new
1211       subroutine kpp_forcing_surf.F
1212     - remove wrong (within bi,bj loops) EXCH calls.
1213     - little cleaning (add argument myThid in last position, cvs header ...)
1214     - for now, fix conservation problem by exchanging KPPviscAz (may not
1215       be the best fix)
1216    o pkg/seaice
1217     - check for inconsistent evp parameter/cpp-flag combination
1218     - remove leftover errIO flat for obsolete name list error handling
1219    o OpenAD
1220     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
1221    
1222    checkpoint59a
1223    o pkg/seaice: some parameter clarifications and a little bit of clean up
1224    o pkg/thsice: rename run-time parameters:
1225       himin       -> hIceMin
1226       himin0      -> hThinIce
1227       hihig       -> hThickIce
1228       i0          -> i0swFrac
1229       transCoef   -> bMeltCoef
1230       frac_energy -> fracMelting
1231      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
1232       with default values (for now) that do not change the results.
1233      remove old version of thsice vars advection in pkg/seaice.
1234    o in FFIELDS.h:
1235      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
1236      - make pLoad & sIceLoad always available (but still only used if
1237         ATMOSPHERIC_LOADING is #define).
1238    o pkg/kpp: replaced _KPP_RL with _RL
1239    o bug fixes for vertical diffusivity computations when both KPP and
1240        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
1241        are no longer updating the vertical diffusivity array
1242        (passed as argument) but are (re-) setting those arrays.
1243    o pkg/seaice: fix bug in evp solver, while doing that
1244      - change (improve?) discretization of stress computations for both
1245        cgrid-lsr and evp solver
1246      - add a new routine to compute strain rates
1247      - the above changes lab_sea results
1248      - add no slip conditions for evp solver (off by default), lsr-version
1249        may follow
1250      - fix exchange for shear at Z-points (does not change lab_sea)
1251      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
1252        (to force the user to pick a time step since there is not "safe" way
1253        of choosing it)
1254      - add principal stress diagnostics
1255      - rearrange fields for evp a little to avoid having to call a: too many
1256        exchanges and b: exchanges for stress trensor components which we do
1257        not have.
1258      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
1259        of evp, complete rewrite for lsr case (latter is does not yet work
1260        in all cases)
1261    o pkg/kpp: add code to have mixing in shelf ice caverns
1262      - add myThid to all kpp routines (long overdue)
1263    
1264    checkpoint59
1265    o pkg/exf:
1266      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
1267        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
1268      - move exf header files from lower_case.h to UPPER_CASE.h ;
1269        add missing cvs Header & Name
1270      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
1271      - add namelist param. selectStressGridPosition, exf_monFreq
1272      - retire many _CLIM routines, and remove data.exf_clim
1273        + params moved to data.exf
1274        + climsst, climsss now handled by exf_set_gen, i.e.
1275          climss?period=0 refers to constant field,
1276          climss?period=-12 to monthly forcing
1277      - split up namelists in data.exf
1278    o pkg/seaice:
1279      - remove seaice_exch and seaice_exch_uv
1280      - remove superfluous exchange of theta
1281      - add myThid to seaice_budget_ocean/ice
1282      - add new interface for atmospheric wind forcing (C-grid only)
1283        + new routine
1284        + two new field (taux, tauy for stress over ice)
1285        + removed one global field (DAIRN) for C-grid case only
1286    o pkg/thsise
1287      - 2nd set of modifs for thsice adjoint in conjunction with exf
1288    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
1289    
1290    checkpoint58y_post
1291    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
1292      vertical diffusivity, similar to that in MOM4; turned on using
1293      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
1294      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
1295    o Added capability for 3D specification of background vertical diffusion
1296      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
1297      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
1298      "data" file that contains the 3D vertical diffusivity coefficients.
1299    o ice dynamics (pkg/seaice) with thsice thermodynamics:
1300      - add code within pkg thsice to advect & diffuse sea-ice fields
1301      similar to (and will replace) what has been added in  seaice_advdiff.F,
1302      but: - conserving Mass, Heat & Salt.
1303           - better when using non-linear advection scheme (not yet fully tested)
1304           - can also be used in atmospheric set-up (for now, only the diffusion).
1305    
1306    checkpoint58x_post
1307    o IO option for global-file compact format:
1308      - add options when generating topology (utils/exch2/matlab-topology-generator)
1309      - add I/O capability (pkg/mdsio).
1310      - adapt utils/matlab/rdmds.m to read this format.
1311      for now long-line format not yet supported by pkg/mdsio (& exch2).
1312    o shelfice: add a few diagnostics
1313    
1314    checkpoint58w_post
1315    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
1316      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
1317      (and replace horiVertRatio in NH code).
1318      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
1319                         and tutorial_plume_on_slope (sensitive to truncation)
1320    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
1321      directly to drive seaice model (C-grid only)
1322    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
1323     - reintroduce computation of wind from stress,
1324     - compute tau (in exf_bulkformulae.F) from windstress averaged to
1325       mass points to avoid tau = 0
1326     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
1327    o rdmnc.m: make it work with "global" files created with gluemnc
1328    o rdmnc.m : some improvements in dealing with singleton dimension
1329      (tested on all testreport mnc output files).
1330    o genmake2: disable pkg/profiles if netcdf test fails.
1331    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
1332    o move call to cal_readparms up to make calendar parameters/variable available
1333      to all packages
1334    
1335    checkpoint58v_post
1336    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
1337      useDynP_inEos_Zc tested.
1338    o pkg/exf: changes to properly interpolate/mask/scale initial fields
1339    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
1340      and portions thereof.  See read_cs.txt for description and examples.
1341    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
1342      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
1343      following the great-circle arc between those 2 points.
1344    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
1345      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
1346    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
1347     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
1348     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
1349     - still needs work (not working with some options ; efficiency to improve)
1350       and serious testing.
1351     - use this scheme for temperature & salinity in 2 advection test exp.:
1352       advect_xy & advect_xz, respectively.
1353    
1354    checkpoint58u_post
1355    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
1356    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
1357    o testreport: add option "-skipdir" to skip some test.
1358    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
1359      momentum calculation.
1360    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
1361    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
1362      remove checkpoint.F and the_correction_step.F (no longer used);
1363      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
1364    o add option (linFSConserveTr) to correct for tracer source/sink due to
1365      Linear Free surface
1366    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
1367    o pkg/thsice: fix reading mnc-pickups
1368    
1369    checkpoint58t_post
1370    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
1371    o pkg/mdsio:
1372     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
1373       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
1374       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
1375     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
1376     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
1377       either MDS_READ_FIELD or MDS_WRITE_FIELD )
1378     - new S/R (to replace MDSWRITEMETA), which allows to write more
1379       informations (variable names, time ...) to meta files.
1380     - modify rdmds.m to give back the meta file content.
1381    o pkg/diagnostics: change vertical interpolation to be safer, and more
1382       flexible (define p-levels to interpolate to in data.diagnostics);
1383      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
1384       diagnostic pointer.
1385    o pkg/seaice: more cleaning up of seaice_growth, added many comments
1386    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
1387    o fix multi-category seaice:
1388     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
1389       SEAICE_MULTICATEGORY
1390     - fix short wave heat flux
1391    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
1392       and allow to use EVP solver. Change forward lab_sea: test both EVP
1393       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
1394    o Initial check-in of lab_sea adjoint
1395      (very similar to natl_box_adjoint/code_seaice)
1396      * used C-grid and EVP solver
1397      * used KPP, GM/Redi
1398      * uses inAdExact=.TRUE.
1399      * gradient checks fail for both ADM and TLM
1400        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
1401        f.d. gradients actually seem more problematic than ADM, TLM gradients;
1402        issue is related to forward mismatch between g77 an ifort
1403    o pkg/seaice: overhaul of thermodynamics
1404     - growth.F and groatb.F are replaced by new routine seaice_growth.F
1405     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
1406     - move a few global fields out of SEAICE.h into seaice_growth.F and
1407       make them 2D (FICE/QNETO/ ...)
1408     - remove FO (it is the same as QNETO)
1409     - introduce a few local fields to avoid modifying external fields such
1410       as atemp, etc.
1411    
1412    checkpoint58s_post
1413    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
1414      changed exf_set_gen.F so that
1415        genperiod=0 means input file is one time-constant field and
1416        genperiod=-12 means input file contains 12 monthly means
1417    o CG2D: use pre-computed solver main-diagonal (stored in common block);
1418      this affects truncation error ; generate new output file for exp. which
1419      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
1420        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
1421        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
1422        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
1423        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
1424        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
1425    o start implementation of deep-atmosphere and anelastic formulation
1426    o verification: remove 2nd copy of input files and use script "prepare_run"
1427      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
1428    o mom_common/vecinv/fluxform: fix a few initialisation isssues
1429    o profiles: fix for multithreaded case
1430    
1431    o diagnostics: rename few diags:
1432      s/'PRESSURE'/'RCENTER '/g
1433      s/'TICE    '/'oceFreez'/g
1434      s/'TAUX    '/'oceTAUX '/g
1435      s/'TAUY    '/'oceTAUY '/g
1436      s/'SWFLUX  '/'oceQsw  '/g
1437      s/DIFx/DFxE/g
1438      s/DIFy/DFyE/g
1439      and add few ocean-forcing diagnostics:
1440      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
1441    o modifications to pkg/seaice/growth.F and budget.F, which change results of
1442      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
1443      as actual snow thickness.  It now refers everywhere to effective snow
1444      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
1445    
1446    checkpoint58r_post
1447    o modifications to pkg/seaice/growth.F, which change results of
1448      lab_sea experiment: fixes pertain to melting snow over open water, to
1449      masking EVAP under sea ice, and to using the correct AREA variable for
1450      computations of EVAP, PRECIP, HSNOW, and GHEFF
1451    o add ability to read bathy, salt, and theta using MNC (off by def)
1452    o add flooding algorithm and advection of HSNOW for pkg/seaice;
1453      both are turned off by default and do no change any results
1454    o seaice advection with pkg/thsice: a step toward the use of non-linear
1455      advection scheme, but #ifdef or commented out for now (requires more EXCH).
1456    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
1457      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
1458      in natl_box (affects results @ truncation level: update output.txt)
1459    o multi-threading and IO:
1460      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
1461      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
1462        (needed to work with SingleCpuIO): tested in all verif. exp.
1463    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
1464      affects the results (but none of the verification test uses this scheme).
1465    o Adding some pkg/diagnostics capability to pkg/seaice
1466      (will certainly be subject to changes)
1467    o ctrl: adding new control variables:
1468      lwflux, lwdown, evap, snowprecip, apressure, runoff
1469    
1470    checkpoint58q_post
1471    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
1472      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
1473      high_res_cube configuration by 4% on Columbia.
1474    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
1475      add (in global_with_exf/code) a version of EXF_INTERP_READ without
1476      dynamical allocation (seems to work in multi-threaded).
1477    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
1478      single CPU io) so that TAF does not have to see EESUPPORT.h
1479    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
1480    
1481    checkpoint58p_post
1482    o obcs: stop if obcs is used with useCDscheme = .true.
1483    o shelfice:
1484     - fix a sign error so that no slip at shelfice interface works
1485     - remove stop for combination non-hydrostatic code and shelfice. That does
1486       not mean, that the results are correct, but at least they are numerically
1487       stable
1488    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
1489    o added adjoint exch routined for all exch*3d* routines
1490      and updated flow directives
1491    
1492    checkpoint58o_post
1493    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
1494      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
1495    o change controling S/R for writing pickup file (new S/R do_write_pickup)
1496      and clean-up reading/writing of pickup files.
1497    o fix local version of read/write pickup (NH part) in rotating_tank/code
1498    o simplify EXCH interface:
1499     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
1500     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
1501    o added the regrid package
1502    o shelfice:
1503     - add a simple boundary layer scheme to reduce noise
1504     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
1505    
1506    checkpoint58n_post
1507    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
1508       local variable (not in common block).
1509    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
1510      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
1511      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
1512        to work with SingleCpuIO.
1513    o add "_d 0" to real constant of pkg/cfc subroutines ;
1514       update exp. cfc_exemple & tutorial_cfc_offline output files.
1515    o multi-threading and IO:
1516      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
1517        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
1518      - barrier before and after reading.
1519      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
1520      - avoid using MDS_WRITELOCAL for LAND pkg output.
1521      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
1522        common-block variables ; Allows multi-threading with master-thread IO.
1523    o change default MAX_NO_THREADS from 32 to 4 ;
1524      and stop cleanly when MAX_NO_THREADS is too small.
1525    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
1526    
1527    checkpoint58m_post
1528    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1529       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1530    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1531       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1532       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1533    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1534        add MITgcm_tutorials (= code + all the tutorials)
1535    o ecco, option to compute cost for total ssh (mean+anom)
1536    o consistent with addition of ptracer and ssh in pkg/profiles
1537    o profiles: adding ptracer and ssh
1538    o testreport: change multi-test output-file name
1539      (from output.txt.{name} to output.{name}.txt)
1540    o profiles: now ok for mutli-tiles case
1541    o seaice: add 4 parameters for different advection schemes for area,
1542      (effective) seaice thickness, enthalphy, and snow height. Their default
1543      is the standard parameter SEAICEadvScheme
1544    o calc_gw:
1545     - add cosFacU in zonal viscous flux (harmonic.visc.).
1546     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1547       of tutorial_plume_on_slope.
1548    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1549    o calc_gw: true flux-form, account for horizontal grid spacing.
1550      update rotating_tank results, but not plume_on_slope (affected at
1551      truncation level, 11 digits).
1552    
1553    checkpoint58l_post
1554    o calc_gw:
1555     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1556     - remove side-drag for now (need to fix it); update plume_on_slope results.
1557     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1558    o commit code to make SST/SSS weights spatially variable
1559      (based on either variable in-situ or variable initial T/S weights)
1560    o pkg/ecco:
1561      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1562        now based on horizontally varying weights wthetaLev, wsaltLev
1563      * cost_averagesflags now returns year indices in addition to day, month
1564      * sflux balance is performed on annual basis
1565        (sflxumm, sfluxmm2, bal_sfluxmm)
1566      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1567        including separate counting and multipliers
1568    o pkg/rbcs
1569      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1570    
1571    checkpoint58k_post
1572    o testreport:
1573     - always build in dir. "build" (if not there, mkdir build instead of building
1574       & running in input)
1575     - run in dir run (if it exists), in build otherwise.
1576     - call prepare_run (if input/prepare_run exists)
1577     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1578    o pkg/exf modifications to interpolation and rotation routines for more
1579       reasonable treatment of North Pole singularity: for tracers North Pole
1580       value is set to northernmost zonal-mean value, for zonal velocity it is
1581       set to zero, and for meridional velocity it is set to northernmost value.
1582    o pkg/exf/exf_check_range.F
1583     - add tile index to diagnostics and move stop statement to the very
1584       end of the routine.
1585    o pkg/diagnostics: (diagnostics_main_init.F)
1586      define title of isomorphic variables according to the current config.
1587    o pkg/thsice with pkg/seaice dynamics:
1588    - fix domain of computation (interior only, required for exf) and do exchanges
1589    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1590    o towards a standard way of dealing with multi-threading in MONITOR
1591      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1592    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1593       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1594    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1595    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1596    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1597       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1598    o tracer advection:
1599     - clean-up and simplify calc_common_factors.F
1600     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1601       advection subroutine (but still not used within DST advection S/R)
1602    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1603    
1604    checkpoint58j_post
1605    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1606      from file (collects calls previously in FORWARD_STEP)
1607    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1608    o adjoint store dir. adjusted accordingly
1609    o genmake2
1610      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1611    
1612    checkpoint58i_post
1613    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1614      on wind stress (SEAICEstressFactor defaults to 1.)
1615    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1616      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1617    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1618      on CS-grid: no longer loosing mass.
1619    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1620    o pkg/ggl90: fix sloppy output and fix a bug
1621    o pkg/seaice: added SEAICEuseEVPpickup parameter
1622      - Set to false in order to start EVP solver with
1623        non-EVP pickup files when using SEAICEuseEVP
1624      - fix sign error in diffusion in seaice_calc_rhs
1625    
1626    checkpoint58h_post
1627    * Modifications for bottom topography control
1628      o replace hFacC by _hFacC at various places
1629      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1630      o add non-self-adjoint cg2d_nsa
1631      o update autodiff support routines
1632      o re-initialise hfac after ctrl_depth_ini
1633      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1634    * Adding verification for 5x5 box (4-layer) bottom topography control
1635    
1636    checkpoint58g_post
1637    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1638       used for mean seasonal cycle, mean diurnal cycle); add an example
1639       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1640    o pkg/ggl90:
1641      - add parameter (minimum surface kinetic energy)
1642      - fix bug (avoiding division by zero)
1643    o couple pkg/thsice to pkg/seaice:
1644      - modify advection in seaice to accomodate new scalar fields to be advected
1645      - only muliDimAdection scheme work with seaice/thsice
1646      - mapping of thsice-variables to seaice-variables, back and forth
1647      - does not break the verification experiments, but does not give the
1648        desired results either
1649    o pkg/seaice
1650      - make (default) second order advection a bit less confusing?
1651    
1652    checkpoint58f_post
1653    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1654      to pkg/seaice):
1655      - new routines thsice_map_exf and thsice_get_exf provide the interface
1656      - add an additional formal parameter to thsice_solve4temp
1657    o pkg/exf:
1658      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1659      - correct Stefan-Boltzmann constant
1660      - new parameter for longwave surface emittance
1661      - separate some stuff from exf_bulkformulae into new routines  
1662        exf_radiation, exf_wind
1663      - add new parameters and constants: longwave emissivity for ocean, ice
1664        and snow, evaporation parameters over ice
1665      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1666        either wind from stress or stress from wind
1667    o pkg/thSIce:
1668    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1669    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1670       and THSICE_CALC_THICKN
1671    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1672    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1673      to make debugging easier.
1674    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1675    o pkg/bulk_force:
1676      - clean-up comments and parameters ;
1677      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1678    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1679      generate new output for test-experiment: aim.5l_cs.thSI
1680    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1681      testreport accordingly
1682    
1683    checkpoint58e_post
1684    o SEAICE_CGRID adjoint done
1685    o R_STAR adjoint implemented.
1686      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1687      * need to sort out init. of h0facc, etc.
1688    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1689      to be able to use it in pure forward.
1690    
1691    checkpoint58d_post
1692    o upgrade simple test-experiment to tutorial example:
1693     step.1: duplicate the experiment and (step.2) will remove the old copy.
1694      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1695      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1696      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1697      tutorial_global_oce_biogeo    <- copy of dic_example
1698      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1699      tutorial_plume_on_slope       <- copy of plume_on_slope
1700      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1701      tutorial_global_oce_optim     <- empty for now (David ?)
1702      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1703     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1704    o correct a sign problem in cost_scat.F
1705    o obcs and ptracers: fix boundary conditions for advections schemes
1706      with larger stencil
1707    o thsice adjoint: start
1708    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1709      completeness
1710    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1711      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1712    o ptracers adjoint:
1713      * avoid extensive recomputatations
1714      * fix missing re-init. of gptr (missed by TAF)
1715    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1716      me to turn off the excessive output to STDOUT that this package produces
1717    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1718      and add those terms in Vector-Invariant formulation.
1719    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1720      if the control period (xx_hfluxperiod etc) is 0
1721    o in profiles pkg, clean routines and fix details
1722    o in ecco pkg, reading ssh data:
1723      fix problem in case the model does not start at iter0=0
1724    o fix mnc-pickup/restart for ptracers
1725    o new package prifiles:
1726      code to compute profile-based cost by Gael Forget
1727      (modifs in ecco, ctrl, autodiff)
1728    o Benign bug fix in initialization (spotted by M. Mazloff) of
1729      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1730    
1731    checkpoint58c_post
1732    o adjoint: finish NLFS adjoint and provide reference output in
1733      verification/global_ocean.90x40x15/results_ad_nlfs
1734    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1735      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1736      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1737      with SEAICE_CGRID defined.
1738    o move calendarDumps from "data" to "data.cal" and clean-up the code
1739      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1740    o add useEXF & useCAL flags (for now, set in hard-coded way)
1741    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1742      (were missing in NH mode, and wrong in quasihydrostatic mode).
1743      waiting for Chris updated version of calc_gw to add those CALLs.
1744    o fix bug in quasihydrostatic S/R ;
1745      add a test for this option: global_ocean.90x40x15.qshyd
1746    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1747      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1748    o add on/off flag useOffLine for package OFFLINE
1749    o seaice:
1750      - modify advection so that it works also on the C-grid
1751      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1752        problem in multi-tile runs with C-grid
1753      - add flags for clipping ice velocities and/or masking solver forcing
1754      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1755        C-grid solver
1756      - added a few comments to seaice_diffusion.F
1757      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1758        are now exclusive)
1759      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1760        required re-ordering the code a little:
1761       + make DAIRN global variable (defined in SEAICE)
1762       + move computation of the viscosities eta and zeta into a new separate
1763         routine (because I need to recompute them in seaice_ocean_stress.F)
1764    
1765    checkpoint58b_post
1766    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1767      update output.txt of exp. aim.5l_cs.thSI
1768    o various mnc cleanups and improvements:
1769      + shrink lookup tables by factor of ~4
1770      + better error reporting when running out of lookup space
1771      + able to handle longer path/file names (up to 500 chars)
1772    o adjoint:
1773      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1774      - TBD: "hidden" mom_vecinv recomp. in dynamics
1775    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1776     (allow to differentiate between forcing components using new integer flags:
1777      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1778     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1779    o ecco
1780      - enable trend removal from SSH anomaly obs.
1781    o adjoint
1782      - a fix for PmEpR when #undef EXACT_CONSERV
1783      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1784      - try to fix "hidden" recomp. in forward_step for NLFS
1785        (NLFS seems broken sometimes after I checked it in)
1786    o seaice:
1787     - add c-grid version of the dynamic solver:
1788       + three new routines that are the c-grid substitute lsr, dynsolver
1789         and ostres
1790       + put a few fields that were local to dynsolver into global common
1791         blocks, so that I can move the computation of stresses etc into
1792         seaice_lsr (saves coding but may break the adjoint).
1793     - replace more hardwired parameters by runtime parameters
1794     - add ice masks that mask the rhs of the implicit solvers where there
1795       is no ice (commented out in seaice_dynsolver, because i am not sure
1796       if this works properly), eventually this should replace the clipping
1797       of ice velocities in seaice_dynsolver to +/-40cm/s.
1798    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1799      include it only where its needed
1800    o move balancing of fluxes before the call of external_forcing_surf
1801    o seaice:
1802      - correct units of turning angles (now they are really in degrees)
1803      - move computation of GWATX/Y out of main routine into dynsolver
1804      - initialize GWATX/Y in seaice_init
1805    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1806      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1807    o seaice: add runtime flags for turning angles (default to zero)
1808    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1809      and trend from exf forcing and ctrl control adjustments
1810    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1811      (since checkpoint57x_post)
1812    o change the default rotation period to 86164.s = the Earth rotation
1813    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1814      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1815    o seaice advection: add code for choosing between the default (2nd order
1816      central differences) and multiDim advection schemes provided by
1817      pkg/generic_advdiff
1818    o seaice:
1819      - removed all references to SEAICE_GRID.h fields from
1820        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1821        (cubed-sphere configuration will change a little)
1822      - grid computations in seaice_init are obsolete now.
1823      - cleaned up code a little so that is easier to read (hopefully).
1824      - added new (better?) discretizations of default advection and diffusion
1825        (turn on with SEAICEuseFluxForm)
1826      - replace 1 in 3d global fields by kSurface in growth.F
1827      
1828    checkpoint58a_post
1829    o seaice:
1830      - bug fix in advect.F
1831    o shelfice:
1832      - separate shelfice load anomaly from pload (breaks with time
1833        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1834        Its default is 0., but it may be computed more cleverly from (unknown)
1835        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1836        done offline. A good approximation of the pressure load anomaly is
1837        necessary to avoid large initial adjustment processes underneath
1838        deep-reaching shelfice.
1839      - small fix in ISOMIP shelfice_thermodynamics
1840      - add more sophisticated thermodynamics of Hellmer (1989), this is
1841        now the default
1842      - give a few constants more intuitive names
1843    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1844      if bulk formulae are used in long integration (especially EmPmR). Turn
1845      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1846      if balancePrintMean, the imbalance that is substracted is printed to
1847      STDOUT.
1848    o fix bug (typo) in obcs_apply_eta.F
1849    o add a new package shelfice which enables us to model the circulation
1850      underneath shelf-ice with draughts of hundreds of meters.
1851     - works
1852     - to do: + include improved thermodynamics
1853              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1854                instead of new field kTopC
1855              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1856                instead of new field R_shelfIce and new code in ini_depth.F
1857                and ini_mask_etc.F?
1858              + adjust vertical mixing schemes?
1859    o seaice pkg:
1860     - add a cpp-flag to include a simple formula for a salinity dependent
1861       freezing point of sea water at the surface
1862     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1863       meridional stresses are now different (and hopefully correct)
1864    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1865       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1866       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1867    o pkg/diagnostics: add options and parameters for regional-statistics
1868       diagnostics ; define regions by reading a region-mask from a file
1869       (might add other options later)
1870    o pkg/bulk_force:
1871     - add option and parameters to use AIM surface-flux formulae.
1872     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1873       others forcing fields (defined in PARM05, parameter file "data") are loaded
1874       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1875     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1876     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1877     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1878       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1879     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1880    
1881    checkpoint58
1882    o add "--embed-source" option to genmake2 which, when the supporting
1883      tools can be compiled (as determined by genmake2) will turn on the
1884      embed_files package which then embeds the entire MITgcm source code
1885      (*.[fFhc] + Makefile) used for the build within the executable
1886      - requested by CNH but off by default
1887      - adds a paltry <9MB to the mitgcmuv executable in most cases
1888      - only writes the output when useEMBEDSRC in eedata is true
1889    o clean up 3-dim. relaxation codes:
1890      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1891      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1892      * Thanks to Tom Haine for testing!
1893    
1894    checkpoint57z_post
1895    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1896      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1897    o fix the pickup behavior for obcs in combination with ptracers
1898    o fix a bug in ptracers_external_fields_load
1899    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1900      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1901    o transfered surface NH pressure to eta field (if exactConserv).
1902    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1903         and update lab_sea output.txt file.
1904    o completing 3-dim. relaxation code: additional term
1905         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1906      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1907      * At compile time, in "EXF_OPTIONS.h" set
1908          #define  ALLOW_CLIMTEMP_RELAXATION
1909          #define  ALLOW_CLIMSALT_RELAXATION
1910      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1911          tauThetaClimRelax3Dim = 15552000.0,
1912          tauSaltClimRelax3Dim  = 15552000.0,
1913      * 3 cases:
1914          1) Use a constant-in-time 3-dim. field
1915          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1916          3) Real-time relax. to time-evolving prescribed field
1917    o Adding Laplacian-type smoothness constraint on
1918      initial and boundary (forcing) controls (ic, bc)
1919      * enable at compile-time via
1920        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1921      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1922      * Absolute scale somewhat unclear so far
1923      * no area weighting was included since no other cost term does so far
1924    
1925    checkpoint57y_post
1926    First step for a NLFS adjoint
1927    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1928    o new init. routines for calc_r_star, calc_surf_dr
1929    o still need to deal with ini_masks_etc
1930    o testreport seemed happy
1931    checkpoint57y_pre
1932    
1933    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1934    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1935    o add new offset feature to offline pkg (plus minor cleanup)
1936    o cfc fixes for final year of integration
1937    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1938      be in GCHEM_OPTIONS).
1939    
1940    checkpoint57x_post
1941    o fix testreport Pb in multiple test experiment.
1942    o cleanup our namelist syntax in verification:
1943      - make it more F95 standards compliant (some work still needed)
1944      - allows the vast majority of our tests to work with gfortran
1945    o Non-Hydrostatic:
1946     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1947     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1948    o Allow to apply AB on T,S rather than on AB(gT,gS):
1949     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1950     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1951       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1952     - need a "clever" read_pickup to restart from the other AB formulation
1953    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1954    o remove some unused variables (reduces number of compiler warnings)
1955    o adjoint
1956      * Disable useVariableViscosity for adjoint for time being
1957        (there are a number of extensive recomputations)
1958      * Initialize certain variables needed for adjoint
1959    
1960    checkpoint57w_post
1961    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1962                 fix the singleCpuIO RS version of MDSWRITEFIELD
1963       and add a WARNING if using globalFiles=T with multi-processors.
1964    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1965      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1966    o tracer advection scheme:
1967      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1968       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1969       was not very convenient).
1970      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1971       (further tests needed for the implicit DST & Flux-Limiter schemes).
1972    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1973      and sRef for convenience, handy, when you want to initialize
1974      ptracers in a large domain with a constant non-zero value. Also,
1975      untangle ptracers_init.F a little.
1976    
1977    checkpoint57v_post
1978    o change dome exp. to use variable viscosity in side-drag terms.
1979    o remove all the files from the cfc_offline test since they are now
1980      incorporated into tutorial_cfc_offline which has been producing
1981      identical results for a few days of testing
1982    o add new parameter: sideDragFactor to enable half-slip-side BC
1983      and change side-drag S/R to use viscosity from mom_calc_visc
1984      (can switch back by setting sideDragFactor=0.); affects results at
1985      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1986       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1987    o vorticity & strain are now computed without masking, to account for
1988      no-slip-side BC in variable viscosity calculation ; mask is applied
1989      anyway later on, before computing advection/coriolis terms.
1990    o modify exp4 to test new obcs support for reading from external files
1991      and for passive tracers
1992    o fix behavior of ptracers_monitor when monitor output is written to a
1993      netcdf-file; still not independent of monitor.F (writes in the same
1994      file).
1995    o change default value of tRef (put a uniform, meaningful value for ocean
1996      & atmos) and initialize sRef (was missing, as Martin mentioned).
1997    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1998      to be proportional to enstrophy dissipation length.  Thus,
1999       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
2000      This is now consistent with Smagorinsky and with the manual.
2001    
2002    checkpoint57u_post
2003    o OBCS and PTRACERS: add open boundary support for passive tracers
2004      - either use homogenous (pseudo) v.Neumann conditions or prescribe
2005        OB-values from file; this is not different from the way theta and salinity
2006        are treated
2007      - however, Orlanski-radiation conditions are not supported, and the model
2008        will stop if you use pTracers and Orlanski at the same time.
2009      - beefed up the rountine obcs_external_fields_load: now only those open
2010        boundary values are overwritten with values from files for which there
2011        are really files, otherwise the OB-fields remain untouched. This makes
2012        it possible to use different OBs at different ends of the domain (as
2013        with EXF)
2014    o reduce number of exch calls in shap_filt (s2).
2015    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
2016      truncation level) 4/5 MLAdjust test results (11&12 digits match).
2017    
2018    checkpoint57t_post
2019    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
2020    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
2021      same truncation, independent of the face number: affects affects several
2022      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
2023    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
2024      note that biharmonic viscosity + no-slip was not tested in any experiment.
2025    o fix bug in non-linear free-surf side-drag ; generate new output for
2026      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
2027    o make mnc honor the writeBinaryPrec flag for most kinds of output
2028    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
2029    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
2030      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
2031    o add brackets in multi-terms sum to get same truncation, independent of
2032      the face number (manage to get exactly same value of gU,gV at the cs-edge)
2033      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
2034    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
2035      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
2036      a maximum grid-scale Reynolds number.  Also, changes all length calculations
2037      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
2038      Suggested values of viscosity parameters found in mom_calc_visc.
2039      Many new viscosity diagnostics available.
2040    
2041    checkpoint57s_post
2042    o Add clearing-house for viscosity calculations, mom_calc_visc and
2043      correct numerous bugs in LeithD and Smagorinsky discretizations.  
2044      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
2045      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
2046      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
2047      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
2048      The Strain-Tension form is now called with useStrainTensonVisc=.true.
2049      ViscAhStrain and viscAhTension are now retired.
2050    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
2051    o In response to JMC's bug report, genmake2 now ignores any soft-links
2052      that it finds in the *current* directory when searching for files.
2053      Soft-links found in any other source directories will still work as
2054      they did before.
2055    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
2056      a C routine to unlimit the stack size
2057    o mnc-ify pkg/aim snapshot vars
2058    o mnc-ify pkg/land as requested by Daniel
2059    o various changes to mnc including:
2060      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
2061      - output can now be grouped so that all files within a group
2062          change the ITER portion of their names in lock-step together
2063      - can now read ("global") PER-FACE (in addition to PER-TILE) files
2064          and works with both EXCH1 and EXCH2 (but needs more testing)
2065      - writing works for all verification test cases w/ g77 on Linux
2066    
2067    checkpoint57r_post
2068    o make MNC variable initialization happen earlier
2069    o add diagnostics for (almost) each term of the momentum Eq.
2070    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
2071    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
2072    o remove MINIMAL_TAVE_OUTPUT option ;
2073      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
2074    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
2075      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
2076    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
2077    o add time-dependent SST, SSS control
2078    o cost terms in ecco/ modularized (new cost_generic.F)
2079    o cost_averages routines are modularized (new cost_averagesgeneric.F)
2080    o new infrastructure for seaice model vs. obs misfits in seaice/
2081      * driver from the_main_loop.F is seaice_cost_driver.F
2082      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
2083      * gradient check in Exp. 6a of natl_box_adjoint/
2084    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
2085      (see README file)
2086    
2087    checkpoint57q_post
2088    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
2089    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
2090      - bug was reported by Jean-Michel and Ian Fenty
2091    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
2092      update exp. cpl_aim+ocn output.
2093    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
2094      Needed for high-res. runs with large global files
2095      to be able to limit tapelev size
2096    o Changed some tests for adjoint:
2097      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
2098      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
2099      * global_ocean.90x40x15/ back to default 3-level checkpointing
2100    o Modifications to enable scripted COMMON to MODULE conversion
2101      * verification/OpenAD/code/ has necessary scripts and description;
2102      * converts, compiles and runs successfully;
2103    
2104    checkpoint57p_post
2105    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
2106    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
2107      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
2108    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
2109    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
2110      (was already the case for dissipation with mom_vecinv,
2111       and also the case for grad.PhiHyd when staggered-timeStep)
2112      This will allow to put dissipation out-off the AB time-stepping.
2113     Unfortunately, affects truncation error. Update output of exp. that "fails"
2114      (cg2d matching number) and leave the others for later: front_relax(10),
2115      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
2116      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
2117    
2118    checkpoint57o_post
2119    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
2120      (2) its ready to be documented during the 20050801 DocFest
2121    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
2122      for ideal_2D_oce and lab_sea on linux_ia32_g77
2123    o set to #undef CTRL_SET_OLD_MAXCVARS_30
2124      in global1x1_tot/code_seaice_adj to access indices 32, 33
2125      (worth another tag)
2126    
2127    checkpoint57n_post
2128    o adding precip control xx_precip 32
2129    o adding swflux control xx_swflux 33
2130    o Replacing 10 forcing penalty cost routines by 1 generic.
2131    o Implementing partitioning in time-mean and variable adjustment
2132      for atmos. state.
2133    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
2134    o in natl_box_adjoint:
2135      * updated exp 1 to 10
2136        (but does not have time-mean vs. variable split results yet)
2137    o updated global1x1/*_seaice_adj/
2138      to incorporate latest changes
2139    o enable useSingleCpuIO for mdsio vector routines
2140      (applies in particular to tapelev I/O)
2141    o removed inefficient K-loop in all active_file*control*.F
2142    
2143    checkpoint57m_post
2144    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
2145      and advect_cs (use EXCH-2 and standard cs-32 grid files).
2146    o pkg/exch2: filling of face-corner halo regions is optional
2147      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
2148    
2149    checkpoint57l_post
2150     tag before updating tutorials (pre-release-2)
2151    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
2152       for output and interpolation of input fields onto model grid)
2153    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
2154       Affects results of exp. rotating_tank ; update output.txt.
2155    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
2156          and taking the square quantity and/or using a fraction-weight field.
2157    o fix aim_diagnostics_init.F mate numbers.
2158    o add mnc output capability to diagnostics/diagstat and update
2159      our cvsignore files for the ACSII output generated
2160    
2161    checkpoint57k_post
2162    o lab_sea now uses diagnostics package and provides a suite of
2163      new EXF diagnostics output.
2164    
2165    checkpoint57j_post
2166    o exf
2167      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
2168        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
2169        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
2170      * extended diagnostics output
2171        - now includes all EXF variables
2172        - hs, hl moved to common block
2173        - separate S/R for diagnostics, called after ctrl vector is added
2174        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
2175        - EXFqnet contains true Qnet (i.e. includes qsw)
2176      * updated verif. lab_sea, global_with_exf
2177      * Rearranging hflux (exf_mapfields -> exf_getforcing)
2178        to ensure that diagnostics sees a true EXFqnet
2179    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
2180    o diagnostics pkg: change pointers so that 1 diagnostic can be used
2181      several times with different frequencies.
2182    o mnc-ify the thsice package as requested by Daniel Enderton
2183      - the monitor--MNC output needs work
2184      - many attributes need to be added (most are currently blank)
2185    o mnc-ify theaim_v23 package as requested by Daniel Enderton
2186      - many attributes need to be added (most are currently blank)
2187    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
2188    o add Sadourny like discretization to the 4th.O vorticity advection scheme
2189    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
2190      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
2191         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
2192    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
2193     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
2194    
2195    checkpoint57i_post
2196    o Diagnostics package was changed: diagnostic allocation is now deactivated
2197      by setting an empty file name in the namelist (used to be by setting 0 frequency)
2198    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
2199      add 1rst Order upwind vertical Shear.
2200    o add a quick fix for A/B checkpointing in OFFLINE mode
2201    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
2202      end-run around the C/Fortran linking horror in eesup/src/timers.F
2203    o added pkg/runclock: allows user to terminate run based on wall clock
2204    o added non-hydrostatic scaling parameter: nh_am2
2205    o pkg/my82: futile attempt to make results compiler-independent by adding
2206      some "_d 0", etc. no effect.
2207    o for mnc output, fill the 'T' coordinate var with myTime and create a
2208      separate 'iter' variable for iteration count
2209    o pkg/diagnostics:
2210      add new capability: output of Global/Regional & per-level statistics ;
2211      tested against monitor output (including land & thSIce) on various exp.
2212    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
2213    
2214    checkpoint57h_done
2215      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
2216      data.diagnostics, data.gchem, data.ptracers) is done.
2217    
2218    o pkg/diagnostics: prepare for Global/Regional statistics.
2219      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
2220    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
2221      and rename it: DIFFERENT_MULTIPLE
2222    
2223    checkpoint57h_post
2224    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
2225    o pkg/diagnostics: change output frequency, now in seconds (instead
2226      of Nb of iterations). This requires to change data.diagnostics.
2227    checkpoint57h_pre
2228    
2229    o in mnc, let the user create the output dir if both mnc_outdir_date
2230      and mnc_outdir_num are false
2231    o add fflags() to pkg/diagnostics which allows one to specify, on a
2232      per-file basis, the file precision [default behavior is unchanged]
2233    o added diagnostics to pkg/kpp, including computation of mixed layer
2234      depth based on a temperature/density criterion
2235    o updated verification/natl_box to test the new pkg/kpp diagnostics
2236    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
2237    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
2238    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
2239      not mnc -- this mistake was found by JMC and is now corrected
2240    
2241    checkpoint57g_post
2242    o add Adams-Bashforth 3rd Order time stepping:
2243      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
2244      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
2245    checkpoint57g_pre
2246    
2247    o make lambda[Theta,Salt]ClimRelax spatially varying
2248      (default remains spatially uniform constant based on tau)
2249    o added new control variables
2250      * init. uVel, vVel, etanN
2251      * lambda[Theta,Salt]ClimRelax
2252    o separate masks used for ctrl_pack/unpack 'from write_grid' output
2253      (suggested by G. Forget)
2254    
2255    checkpoint57f_post
2256    o add parameter "baseTime" = model base time = time at iteration zero
2257      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
2258      account for baseTime shift
2259    o move Coriolis arrays from PARAMS.h to GRID.h
2260    checkpoint57f_pre
2261    
2262    o mnc-ifying the seaice package
2263    o introduced an alternative length scale calculation for use in the limiting
2264      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
2265    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
2266    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
2267      as well as grad(vort3).  Made it compatible with both approximate form
2268      for the cubed sphere and full form of these gradients.  Added flag
2269      useFullLeith to select between approximate and full form.  
2270    o add "d0" in getcon.F to reduce differences between compilers/platforms
2271      update output.txt of exp. fizhi-gridalt-hs
2272    o change port_rand funtion to allow to set the seed.
2273    o fix obscure MNC bug involving conversion between reals and integers
2274      - it caused no problems with certain (eg. gcc, ifc) compilers but the
2275        new version is now more standards-compliant
2276    o adjoint-related modifications
2277      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
2278      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
2279      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
2280    
2281    checkpoint57e_post
2282    o Adding eddy stress controls a la Ferreira et al.
2283    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
2284    
2285    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
2286      update output.txt of exp. fizhi-gridalt-hs
2287    o add more "Z" dimensions and associated coordinate vars to MNC
2288    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
2289    o parameter calendarDumps: when set, approximate months (30-31 days) and years
2290      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
2291      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
2292      months and years.  Requires pkg/cal.
2293    o diagnostics: add pickup functionality
2294      - off by default for backwards compatibility
2295      - current version only uses MDSIO -- MNC will be added
2296    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
2297    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
2298    
2299    checkpoint57d_post
2300    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
2301    o modify verification/ideal_2D_oce so that it tests the creation of mnc
2302      output from the diagnostics package
2303    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
2304    o make genmake2 more portable by using ".$FS" instead of ".f" for more
2305      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
2306    o add coordinate variables to the MNC output from the diagnostics package
2307    o change MNC-flags default value: true when useMNC=TRUE
2308    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
2309      the ability (off by default) to read the grid information using MNC
2310    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
2311    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
2312    o do snap-shot diagnostics at the middle of the time-interval (instead of
2313      at the end).
2314    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
2315      new test for AIM with thSIce + slab-ocean
2316    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
2317    o move state variable diagnostics to the beginning of the time step ;
2318      (note: still needs some work specially for snap-shot diagnostics)
2319      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
2320    
2321    checkpoint57c_post
2322    o Change testing option (-ieee) to get closer agreement between g77 & ifort
2323    o generate new output.txt files on faulks with g77 & the new -ieee option
2324    checkpoint57c_pre
2325    
2326    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
2327      update output.txt of exp. global_ocean.90x40x15
2328    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
2329      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
2330    o add saltFlux(+File) forcing capability with periodicExternalForcing
2331    o allow to use pkg diagnostics for GM-Redi & ThSIce output
2332    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
2333    o improvements for the MNC output from DIAGNOSTICS:
2334      - correct handling of the unlimitied dimension
2335      - all dims now have associated coordinate variables
2336      - variables located at U, V, and Corner ("Z") points are now written
2337        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
2338        *all* data points are output
2339    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
2340    o added pkg/seaice/seaice_monitor.F
2341    o mdsio_readfield.F can now read files visible only to master MPI process.
2342    o pkg/seaice: some test code for ice-modified ocean stress
2343    o exf_getffields interpolation defaults to bilinear for all scalar forcing
2344      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
2345      spurious negative numbers for precipitation and humidity.  Will cause
2346      some small numerical differences for integrations using pkg/exf/exf_interp.F.
2347    o pkg/ctrl/
2348      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
2349        May be enabled via doPackDiag
2350      *  introduce z-scaling of
2351         + gradient (doZscalePack) and
2352         + control (doZscaleUnpack)
2353    o pkg/mdsio/
2354      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
2355      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
2356    
2357    checkpoint57b_post
2358    o simplify options in diagnostics_fill arguments (remove weird combinations)
2359    o fix MNC coordinate variables so that they now contain per-face index
2360      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
2361      general, EXCH2 grids are only aligned to a "local" coordinate system
2362    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
2363    o Implement instantaneous output within pkg diagnostics:
2364      setting a negative frequency in data.diagnostics produces
2365     "snap-shot" output (as opposed to time-average if freq > 0)
2366    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
2367      NOTE: change ptracer diagnostics name: use 2 characters to work with
2368            more than 9 tracers. Add also diagnostics of advect & diffus flux.
2369    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
2370      becomes the coordinate variable for the 'T' dimension
2371    o add CF-style coordinate variables to MNC
2372      - just a first cut:  numbers are meaningless on the cubesphere and
2373        missing along the T axis but otherwise it works!
2374    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
2375    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
2376    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
2377      this is based directly on what the model compute, so that the content of
2378      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
2379    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
2380    o clean up build options files for SunOS, in particular
2381      - remove -traditional from xmakedepend
2382      - change -xarch=v9 to -xarch=native for f77
2383      - restore use of make (not gmake)
2384      - add CC=gcc if using g77
2385    o changes per discussion of AM, JMC, & EH3 today:
2386      - move redundant "grid" variables out of "state" -- in preparation of
2387        creating proper CF-style coordinate variables and in recognition
2388        that any/all grid variables can be easily copied (eg. w/NCO) from
2389        the grid files into any of the other NetCDF files
2390      - *always* output grid variables with MDSIO (this will eventually be
2391        changed)
2392      - output MNC grid file if useMNC is true
2393    o every instance of _END_MASTER() has been found and replaced with
2394      _END_MASTER( myThid ) in order to satisfy certain picky Sun
2395      preprocessors
2396    o re-arrange diagnostics pkg initialisation:
2397     - allow each package to extend the available diagnostics list
2398     - add some checking and fix small problems (multi-threaded, ...)
2399     - new S/R diagnostics_fill (replace fill_diagnostics):
2400       look through the short list of active diag. (instead of the long list)
2401       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
2402    
2403    checkpoint57a_post
2404    o this set of changes restores TAMC compatibility
2405      tested for global_ocean.90x40x15 adjoint on trough
2406      (what a pain)
2407    
2408    checkpoint57a_pre
2409    o some modifs in tools/build_options for sunos
2410    o call ctrl_pack for ctrl at end for optimcycle=0
2411    
2412    checkpoint57
2413    o add horizontal bi-harmonic viscosity for vertical velocity
2414      - new parameter viscA4W (defaults to viscA4)
2415      - affects only non-hydrostatic code
2416      - to be done: no-slip lateral boundary conditions
2417    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
2418    o implement Implicit Vertical advection for pTracers
2419    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
2420      (implemented also for implicit vertical diffusion & advection)
2421    o OBCS: extend application of tracer open boundary conditions
2422      to a strip beyond the boundary of width Olx/Oly
2423    o add call monitor to TAF set of required calls (flow directives)
2424      and include in natl_box_adjoint
2425    o untangle a few ifdefs related to cost, ctrl, autodiff
2426      untangel a few ALLOW_ECCO_OPTIMIZATION
2427    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
2428      (theta2, salt2 in ecco_cost_weights)
2429    
2430    checkpoint56c_post
2431    o OBCS as control variables
2432      - update ctrl_ad_diff.list, obcs_ad_diff.list
2433      - remove balance of obcs controls from default
2434      - fix index bug nobcs in ctrl_init
2435      - fix dummy fields filen in ctrl_pack
2436      - add dummy weights for obcs
2437    o lsopt: comment out fort.94 output
2438    o optim:
2439      - remove unnecessary header files
2440      - adjusted namelists
2441      - add xerbla.F to Makefile
2442    o exf:
2443      - multiple modifications of exf_check_range
2444      - unit change in exf_init_runoff from [m/year] to [m/s]
2445    o mdsio:
2446      - i/o-vector change debugLevel from debLevA to debLevB
2447    
2448    checkpoint56b_post
2449    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
2450      is called from DO_THE_MODEL_IO
2451      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
2452      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
2453      - clean up PTRACERS_WRITE_TIMEAVE a little
2454    o add another verification experiment that tests both the cfc-pkg and
2455      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
2456      reactive tendencies treated inline with regular timestepping
2457    o testreport previously did a lousy job of comparing small numbers, so
2458      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
2459      implemented in the little c-progam tmp_cmpnum.c which is embedded in
2460      testreport.
2461    o ptracers_monitor: bug fix for MPI
2462    
2463    checkpoint56a_post
2464    o GCHEM: finish reorganizating the package
2465      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
2466        (introduces another 3D-array for each passive tracer, but only if
2467        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
2468        gchemTendency is not needed because the timestep is done separately)
2469      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
2470      - GCHEM is now---more or less cleanly---separate from PTRACERS
2471      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
2472        so clear to me how that should be done in a general way.
2473    o CFC: improve formatting of output in CFC_ATMOS
2474    o PTRACERS:
2475      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
2476        that ALL experiments with ptracers enable can be checked. This makes
2477        GCHEM_MONITOR obsolete.
2478      - include a runtime parameter PTRACERS_monitorFreq that defaults to
2479        monitorFreq
2480      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
2481    o add PTRACERS (PTR0[1-5]) to testreport output
2482    o exf_check_range:
2483      * default changed to .TRUE.
2484      * will check values for niter0 if debLevA, every timestep if debLevB
2485      * STOP in exf_check_range if 'out of range'
2486      * range chosen generous to allow for potential extema
2487      TBD: a version with stricter range
2488           permitted range would be runtime parameters
2489    o GMredi:
2490      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
2491      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
2492      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
2493    o GCHEM:
2494      - move call to GCHEM_FORCING_SEP, so that it is now called before
2495        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
2496      - introduced a useGCHEM runtime flag and applied it everywhere.
2497      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
2498        this flag is now only visible within GCHEM-pkg routines.
2499      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
2500        be replaced by a 3D array that is computed before thermodynamics; for
2501        this, the tracer ID iTracer had to be included into the parameter list
2502        of ptracers_forcing
2503      - set up forward_step to call gchem_forcing, that will replace
2504        gchem_forcing_int in ptracers_forcing
2505      - cleaning up
2506    o small cleaning of exch2: remove files that are also in eesupp/src
2507    
2508    checkpoint56
2509    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
2510    o mnc: cleanup "full" files--fixes out-of-memory problem
2511    o ECCO-GODAE
2512      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
2513      * fully merged and updated from SIO code
2514        windstress sign change affects
2515        - exf_inscal_[u/v]stress
2516        - sign of xx_tau[u/v] adjustments
2517        - signs in cost_scat
2518      * ctrl_get_gen: avoid update of tau[u/v] for first few days
2519      * natl_box_adjoint updated and compressed
2520      * 2-level checkpoint switch added
2521        (tested in EXP. 1 of natl_box_adjoint)
2522      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
2523    o SVD
2524      * first complete, non-hacked version for SVD calculations
2525      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
2526        performed via direct access files admtlm_vector.it????
2527        (via ctrl_[un]pack)
2528      * optimcycle is used for ARPACK iteration counter
2529        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
2530      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
2531        and add linear transforms where necessary
2532      * controls are initial/final SST, SSS (can be extended; need to check
2533        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
2534    o mdsio: filename info to both stderr, stdout
2535    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
2536      from sign change
2537    
2538    checkpoint55j_post
2539    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
2540      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2541    o add consistent build directories and .cvsignore files to verification
2542    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
2543    o make all subroutines 30 or less characters in length for certain older
2544      compilers to work (a thorough search only turns up two routines in
2545      pkg/ptracers)
2546    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
2547      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2548    
2549    checkpoint55i_post
2550    o change arrays for total vertical diffusivity (2.D if explicit,
2551      3.D if implicit) ; each ptracer uses its own background value.
2552    o added mnc/NetCDF output capability to ocn_compon_interf
2553      - added bits to verification/cpl_aim+ocn so that it can run on
2554        ITRDA and other clusters without the mpirun "-wd" option
2555    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
2556      configuration
2557    o give MNC the ability to create additional files rather than
2558      exceeding a specified file size limit "MNC_MAX_FILESIZE"
2559      - the default is just less than 2GB which is a practical limit
2560        on many systems
2561    o Compute the non-local term using either KPP vertical diffusivity (=default)
2562       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
2563    
2564    checkpoint55h_post
2565    o add verification test "vermix"
2566    o remove all the *_ioinc flags and replace with the single global
2567      outputTypesInclusive flag
2568    o allow to set a vertical profile of vertical diffusivity for T & S
2569    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
2570    o useMNC moved from data.mnc to data.pkg
2571    
2572    checkpoint55g_post
2573    o Renaming carbon AD experiments to comply with testreport conventions
2574    o Updating adjoint of Held-Suarez hs94.1x64x5
2575    o Fixing directives for non-ECCO forward_step, after ECCO directives
2576      have been fixed to avoid recomp. of do_oceanic_phys
2577      Works well for global_ocean.90x40x15,
2578      but recomp. issue remains for carbon
2579    o Updating adjoint output for natl_box_adjoint after
2580      pkg/ecco has been modified (see taga c55d_post)
2581    
2582    checkpoint55f_post
2583    o rename to timeave_init_fixed
2584    
2585    checkpoint55e_post
2586    o some delicate re-shuffle of store directives to avoid one
2587      extra call of do_oceanic_physics
2588      affects ecco_the_main_loop.F, do_oceanic_physics.F
2589      checkpoint_lev1_directives.h
2590    o NB: this may break global_ocean adjoint temporarily,
2591      but it is clear how to fix it. Will do later, need this now.
2592    
2593    checkpoint55d_post
2594    o ECCO specific cost function terms (up-to-date with 1x1 runs)
2595    o ecco_cost_weights is modified to 1x1 runs
2596    o modifs to allow observations to be read in as
2597      single file or yearly files
2598    o enable to read exf forcing fields as either
2599      single file or yearly files (flag useExfYearlyFields)
2600    checkpoint55d_pre
2601    
2602    o switch between 2-level and 3-level checkpointing
2603    o add ability of MNC to write local and "partial" (eg. 2D slices where
2604      the full 3D field is never actually stored) arrays to NetCDF files
2605      with the correct (that is, the complete multi-dimensional) set of
2606      array indicies
2607      - used in mom_vecinv() to write the diagFreq output
2608      - tested (demonstrated) in verification/aim.5l_cs
2609    o further mnc-ification
2610      - add verification/lab_sea to the list with mnc setups
2611      - fix undefined mnc v-names in cd_code
2612      - add kpp to mnc output (both snapshot and timeave)
2613    o non-hydrostatic code
2614      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
2615        in calc_gw.F
2616      - defaults to viscAh
2617      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
2618        friction or Leith) in non-hydrostatic mode, as long as there is
2619        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
2620    o pkg/cost
2621      extend simple cost functions to treat time mean quantities
2622      (T,U,V) via cost_accumulate_state from cost_tile
2623    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
2624        be 2 times larger than the minimum size the advection scheme requires.
2625        now get a perfect conservation of salt in advect_cs test-exp (updated)
2626    o GGL90 (Gaspar's TKE mixed layer)
2627      - add horizontal diffusion of TKE, requires exchanges in
2628        do_fields_blocking_exchanges, horizontal diffusivity is zero by
2629        default. In OPA there is no horizontal diffusion of TKE but the
2630        mixing coefficients are computed from a horizontal average of TKE of
2631        6 points or so. I think that diffusion has a little more physical
2632        justification.
2633      - clean up ggl90_calc in the hope of reducing memory usage (this hope
2634        was in vain)
2635      - mask tke-variable in ggl90_init
2636    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
2637    o fix biharmonic diffusion on CS-grid.
2638    o more obcs stuff
2639      - added obcs_external_fields_load as an alternative to the EXF-pkg option
2640        for reading boundary values. This routine is called from
2641        obcs_prescribe_read
2642      - updated obcs_check
2643      - changed sponge layer relaxation parameter units for days to seconds
2644      - turned off sponge layer by default
2645      - changed argument list of OBCS_CALC to myTime+deltaTclock
2646      - fixed about 35 bugs in obcs_external_fields_load
2647    
2648    checkpoint55c_post
2649    o obcs stuff
2650      - new runtime flags useOBCSprescribe, useOBCSbalance
2651      - re-arranged obcs_calc
2652      - moved exf_getobcs to obcs_prescibe_read
2653        obcs_prescibe_read is called after ORLANSKI stuff
2654        and independent of it (executable can contain all).
2655      - updated obcs_check
2656      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
2657        These may be necessary only if tangential velocities are
2658        prescribed at OB, not sure, needs testing.
2659    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
2660      which simplifies the calls and passes the ifc check-bounds test
2661    
2662    checkpoint55b_post
2663    o add a 2D scalar, Z location, exchange_2 routine.
2664    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
2665      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
2666      affects advect_cs results (for the wrong reason): update output.txt
2667    o use a more standard discretization for biharmonic viscosity ;
2668     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
2669      affects results of dome set-up: update output.txt
2670    o fix gad_advection.F (CubedSphere part), back to version 1.23
2671    o fix bug in mom_vi_del2uv.F (CubedSphere part).
2672    
2673    checkpoint55a_post
2674    o merged code to
2675      * prescribe/read time-dependent open boundaries
2676        (works in conjunction with exf, cal)
2677      * sponge layer code for open boundaries
2678      * each boundary N/S/E/W now has its own CPP option
2679        (healthy for the adjoint)
2680    
2681    checkpoint55
2682    o up-to-date adjoint of previous breaks
2683      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
2684      - global_ocean_ebm: adjoint still needs fix (TLM ok)
2685      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
2686      - carbon: * remove tr1-related adjoint verification
2687                * add ptracer as control variable
2688    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
2689      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
2690    
2691    checkpoint54f_post
2692    o in verification/carbin/ remove experiment related to
2693      ALLOW_PASSIVE_TRACER (array tr1 etc)
2694      code_ad/ input_ad/ results_ad
2695    
2696    o add two new packages
2697      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
2698        + subject to optimization (memory)
2699      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
2700        + subject to reordering (many GOTOs in the original code)
2701        + so far opps is called for every (i,j) point, and then operates in
2702          the vertical; one may want to reorder the scheme in order operate in
2703          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
2704          fields)
2705    o overhaul of IO so that we now have flags for MDSIO and/or MNC
2706      - all verification tests compile and run with linux_ia32_g77
2707      - defaults are compatible with current input files--nothing
2708        should change if you were not previously using MNC
2709      - MNC output has been added in numerous places (eg. timeave)
2710        but there are still a few writes not yet do-able with MNC
2711        (this is in progress)
2712      - flags now allow for either/or/both use of MDSIO and MNC and
2713        documentation will soon follow
2714      - numerous small formatting cleanups for ProTeX
2715    o add version info (via BUILD_INFO.h) to MNC and stdout
2716    
2717    checkpoint54e_post
2718    o add two new packages
2719      - pp81 (Packanowski and Philander, 1981), Richardson number and
2720        stratification dependent mixing
2721      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2722      - these scheme operate in a similar manner as KPP (without ghat, of
2723        course), however there is only one diffusivity that is used for both
2724        temperature and salinity (and passive tracers)
2725    o add offline package
2726    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2727      provided by Stephanie Dutkiewicz
2728    o genmake2: add ability to search for C compilers and cleanup test output
2729      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
2730    
2731    checkpoint54d_post
2732    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
2733    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
2734      leading to additional shift by 5 days each year of integration
2735       (i.e. leading to considerable offset over the years)
2736    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
2737    o start with no AB and no initial filtering (staggerTimeStep):
2738      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
2739    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
2740      (external loading & cpl import/export stay in forward_step.F)
2741    o update coupling interface to work with new staggerTimeStep
2742    o change MDSIO ptracers_pickup.
2743    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2744    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2745    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2746    
2747    checkpoint54c_post
2748    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2749      this affects (truncation error) output.txt of test-exp:
2750       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2751    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2752    o change Qnet to always be the net heat flux, (+upward).
2753      affects (truncation error) output of natl_box exp.: updated
2754    o define the max number of passive tracers in PTRACERS_SIZE.h
2755    o start to test mnc routinely in exp0
2756    o add sea-ice loading (sIceLoad) as a new forcing field.
2757    
2758    checkpoint54b_post
2759    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2760       impressive on Altix and Opteron systems)
2761    o diagnostics can now write NetCDF files through the mnc package
2762    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2763    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2764    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2765      affects (truncation error) output of lab_sea & natl_box exp.: updated
2766    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2767    
2768    checkpoint54a_post
2769    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2770    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2771    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2772    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2773      + internal_wave (shift in writing cg2d_ini_res)
2774    checkpoint54a_pre
2775    
2776    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2777      - modified verification/lab_sea and natl_box_adjoint accordingly
2778    
2779    checkpoint54
2780    checkpoint53g_post
2781    o prepare splitting of thermodynamics: store convect.counter in common block
2782    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2783      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2784    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2785    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2786    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2787    o restore adjointability
2788    
2789    checkpoint53f_post
2790    o modifications that affect AIM experiment results (update output.txt):
2791      - no advection of S at top interface Nr (pkg/generic_advdiff)
2792      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2793    o AIM pkg:
2794      - include stability function into surf.Flux derivative relative to Tsurf
2795      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2796    
2797    checkpoint53e_post
2798    o merged cylindrical coord configuration
2799    o added rotating_tank experiment
2800    checkpoint53e_pre
2801    
2802    checkpoint53d_post
2803    o faulks upgraded: re-generate output.txt that have changed:
2804       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2805    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2806    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2807    o added Sadourny discretization of Coriolis
2808      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2809      - re-enabled use of omega3 (useAbsVorticity)
2810    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2811      vector-invariant equations
2812      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2813    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2814      hopefully without new bugs
2815      - still to do: biharmonic friction for non-hydrostatic w
2816    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2817    o regenerated output for global_ocean_ebm (using -ieee)
2818    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2819      of mom_common/
2820      - simple re-arrangement of instructions within computing loop
2821    checkpoint53d_pre
2822    
2823    checkpoint53c_post
2824    o new version of coupler for AIM+thSIce and Ocean models
2825     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2826     - land: change Evaporation of snow
2827     - aim with thSIce: fix bug in snow-precip.
2828    o changes to calc_gw.F
2829     - bug fix for w^2 term near the bottom boundary
2830     - (hopefully) improve the lateral slip boundary condtions for use with
2831        partial/looped cells
2832      - because the bug fix changes two verification experiments anyway (exp5
2833        and plume on slope), change the lateral boundary condition from half slip
2834        to the value of no_slip_sides
2835    o ebm package wasnt quite up to the parallel task. Fixed that.
2836    o Adjoint of EBM package + verification
2837      * TLM OK
2838      * ADM not sufficient accuracy yet (needs further testing)
2839    
2840    checkpoint53b_post
2841    o Commiting new energy balance model to repository
2842      * package is pkg/ebm
2843      * verif. is verification/global_ocean_ebm
2844      * references are in ebm_driver.F
2845    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2846    C        Global thermohaline circulation. Part I:
2847    C        Sensitivity to atmospheric moisture transport.
2848    C        J. Climate 12(1), 71-82
2849    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2850    C        Global thermohaline circulation. Part II:
2851    C        Sensitivity with interactive transport.
2852    C        J. Climate 12(1), 83-91
2853    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2854    C        Destabilization of the thermohaline circulation
2855    C        by atmospheric eddy transports.
2856    C        J. Climate 7(12), 1870-1882
2857    o Will need long integration testing.
2858    checkpoint53b_pre
2859    
2860    o created pkg/mom_common in preparation for variable viscosity code
2861    o renamed and split ini_mnc_io
2862    o pkg/land: only liquid water can diffuse or run-off
2863    o AIM using land: soil wetness availability account for snow
2864    o added printMapIncludesZeros to EEPARMS namelist
2865    
2866    checkpoint53a_post
2867    o restore TAMC compatiility for exf_constants.h
2868      (no usage of _d in .h)
2869    o Additional storing in KPP in an attempt to fix
2870      TAMC problem with adjoint of KPP code.
2871      (no success...)
2872      Identical code works fine with TAF.
2873    o Fixed verification/natl_box_adjoint experiments.
2874      Initial conditions for Experiments 4 and 5 are now
2875      set to "SEAICE_initialHEFF=0", which is more reasonable,
2876      and hence gives results closer to that of Experiment 2.
2877      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2878    
2879    checkpoint53
2880    o stable checkpoint with up to date adjoint
2881      TLM tests only run for 1st grdchk at the moment. Its unclear if
2882      this is a code problem or a problem with resetting code for g_
2883      variables that is being autogenerated wrong.
2884      Otherwise:
2885       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2886       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2887         are both still in chaos following their security messes.
2888    
2889    checkpoint52n_post
2890    o various build (mostly genmake2) changes including:
2891      - ability to build/run more easily within Cygwin and MacOS X
2892      - more complicated Makefiles with a stronger dependence on Gnu Make
2893    o pkg/seaice modifications
2894      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2895        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2896        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2897      - changed proxy for geostrophic velocity and updated
2898        verification/lab_sea/results/* accordingly
2899      - removed ADI dynamic solver from pkg/seaice
2900      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2901        they caused a segmentation fault under certain circumstances
2902      - removed unused field WATR
2903    o bug fix in exf-package:
2904      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2905         now reflect that.
2906    o small fixes in the cal-package:
2907      - set reference date to first of January for the 'model'-calendar
2908      - failing of cal_CheckDate in cal_FullDate now actually results in a
2909        warning
2910    o small modifications in exf-package to increase flexibility:
2911      - change climtempfreeze from a constant to a runtime parameter that
2912        is specified in data.exf_clim (default = -1.9)
2913      - introduce runtime parameter windstressmax (default = 2.0) that is
2914        specified in data.exf
2915    o fix in pkg/thsice:
2916      - update Evap (Tsf changes) to be consistent with Latent heat flux
2917      - maintain snow precipitation unchanged (even if Tsf >=0).
2918     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2919    
2920    checkpoint52m_post
2921    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2922      this does not change any of the results, because myIter=0 in swfrac always
2923      lead to jwtype=2 (the default anyway), but the call makes little sense
2924      as a default
2925    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2926    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2927      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2928    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2929    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2930    o extending useSingleCpuIO option to work with new exch2 I/O format
2931      - old-style, missing-tile I/O is still accessible by defining CPP
2932        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2933    o monitor package can write to NetCDF files and/or STDOUT
2934    o fix re-definition bug in MNC_GRID_INIT_ALL()
2935    o doc/api_reference added
2936      - a framework for building an API Reference Manual using all
2937        the "protex" comments embedded in the code
2938      - see pkg/generic_advdiff, pkg/mnc for examples
2939    o MNC:
2940      - make myThid the last argument for all subroutines
2941      - new default for the grid files: NO halos
2942      - add useMNC and other run-time flags
2943      - separate per-file-group handling of the unlimited dimension
2944      - early initialization of MNC w/ flags read at the eeboot stage
2945        and lookup tables set in initialize_fixed
2946      - write all MNC output to a freshly-created directory
2947    o thermodynamics sea-ice (thsice) is now tested with testreport.
2948    o test exp. advect_cs: use the standard cs32 grid ; update output.
2949    o Added functionality to grdchk:
2950      pick global i,j,k position (or nearest wet) where to perform check.
2951    
2952    checkpoint52l_post
2953    o new land formulation:
2954      a) use ground enthalpy as prognostic variable to ensure exact
2955         energy conservation.
2956      b) account for water temperature and for latent heat of freezing
2957         in all processes (rain, run-off, ground storage)
2958      c) compute surface and ground temperature implicitly.
2959    o aim_v23 modification for new land model:
2960      a) Treat separately land / ocean / sea-ice surface fluxes
2961         to allow implicit computation of land & sea-ice surface temp.
2962      b) add snow precipitation.
2963    checkpoint52l_pre
2964    
2965    o fix problem (when 1 tile is empty) in min/max monitor.
2966    o fix bug in timeAve (u,vZetatave in common block)
2967    o no restoring terms under ice for pkg/seaice
2968    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2969    o bug fix for pkg/seaice pickups
2970    o change MNC call locations and add coordinate attributes
2971    o mask vorticity at the corner ; affects global_ocean.cs output
2972    o fix ini_curvilinear_grid ; test CS experiments with mpi
2973    o aim.5l_cs: modify sea-ice fraction input file ; update output
2974    o exf: Adding simple range check routine for exf fields after read
2975    
2976    checkpoint52k_post
2977    o removed top-level directory "diags"
2978      - we migrated these functions to pkg/timeave a long time ago
2979    o fixed bug introduced in pkg/monitor
2980    o accuracy ctrlprec = 32 insuffient for gradient checks using
2981      averaged fields (I/O via cost_averages)
2982      -> use ctrl.h in active_file*.F to control I/O precision.
2983    o paramter list of CALL ADTHE_MAIN_LOOP
2984    o added initial do_the_model_io to ecco
2985    o set all ...Freq to zero after cost_final
2986      taveFreq, dumpFreq, pChkptFreq
2987    o MAIN and ECCO differentiability restored
2988    
2989    checkpoint52j_post
2990    o fix nchklev in tamc.h for global_ocean...
2991    o Bringing flow and store directives up-to-date
2992    o Really weird thing!
2993      call do_the_model_io from the_main_loop with parameters
2994      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2995      TAF places a faulty re-call of initialise_varia
2996      after cost_final call which should not be there!
2997    checkpoint52j_pre
2998    
2999    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
3000      error messages
3001    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
3002    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
3003      debug output
3004    o modfied mdsio_writefield.F to handle non-global files under exch2
3005    o update AIM Cubed-Sphere exp (aim.5l_cs):
3006      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
3007    o update AIM Equatorial Channel exp:
3008      use standard aim_v23 pkg and change the SST fields to be more realistic.
3009    o globalFile now works with exch2
3010    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
3011      mon_vort3.F to make exch2 friendly with >1 tile per cube face
3012    o limit timeave output for hi-res integrations
3013    
3014    checkpoint52i_post
3015    o removed CPP_EEOPTIONS.h from verification/*/code
3016    o updated the tiling for global_ocean_pressure
3017    checkpoint52i_pre
3018    
3019    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
3020      the old pkg/aim).
3021    
3022    checkpoint52h_pre
3023    o shortened offending lines in exch2_send_rx?.template
3024    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
3025    o genmake2: add build & execute test for NetCDF code
3026    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
3027      old grid files, moved CPP_EEMACROS.h to pkg/exch2
3028    o added useSingleCPUIO flag to monitor.F and mon_out.F
3029    o added temporary hack for sea-ice dynamics on the cube:
3030      metric terms are ignored and it is assumed that
3031      there is no sea-ice on cube faces 1, 2, 4, and 5.
3032    
3033    checkpoint52f_post
3034    o added exch2 cube routines to pkg/exch2
3035    o modified hs94.cs-32x32x5 to use it
3036    o added new grid files to hs94.cs-32x32x5
3037    checkpoint52f_pre
3038    
3039    checkpoint52e_post
3040    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
3041      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
3042    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
3043      to work with implicit vertical advection and AB ;
3044    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
3045    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
3046     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
3047    checkpoint52e_pre
3048    
3049    o fix bug in impldiff when Nr=1 or Nr=2.
3050    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
3051    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
3052    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
3053      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
3054    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
3055    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
3056    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
3057    
3058    checkpoint52d_post
3059    o re-tiled many expts to allow comparison in multi-processor mode
3060      - updated output accordingly
3061      - changed hs94.128x64x5 to use intial T from file rather than use the
3062        random number generator
3063    o add infrastructure in model routines for fizhi and gridalt packages
3064    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
3065    o changes to permit hi-res, cubed-sphere, configuration
3066      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
3067      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
3068      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
3069        of surface winds for the cube
3070      (A verification experiment, based on global_ocean.cs32x15, but with
3071       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
3072       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
3073       complete with example surface forcing files and matlab scripts to look
3074       at the output and compare it with that of global_ocean.cs32x15.)
3075    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
3076       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
3077       to conform to the common rule.
3078    o check-in the first version of the coupler + interfaces for multi-components
3079       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
3080       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
3081       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
3082       - ocean and atmos. share the same horizontal grid (no interpolation).
3083       - exchanges between component and coupler is done in forward_step
3084    o new verification experiment, cpl_aim+ocn:
3085       coupled ocean - AIM atmosphere on cs32 grid.
3086    
3087    checkpoint52d_pre
3088    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
3089    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
3090    
3091    checkpoint52c_post
3092    o Fixing OPTIONS files for use of exf:
3093      - ALLOW_ECCO not needed
3094      - ECCO_CPPOPTIONS.h should not be included from
3095        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
3096        as has been the case in the past
3097      - All cal/exf related options are currently set in
3098        single header file. Should remain so until we
3099        agree on a consistent new policy.
3100    o Removed all CPP options for cal package.
3101      cal has no more CPP options.
3102    o modified STOREs in GAD_ADVECTION
3103    o corrected key comp. for passkey
3104    
3105    checkpoint52b_post
3106    o new version: "thsice" of thermodynamic sea-ice pkg:
3107     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
3108     - modify fluxes but do not change theta directly;
3109     - light cleaning of bulk_force pkg (still needed with thsice).
3110     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
3111       + output_thsice.txt to test thsice & bulk_force pkgs.
3112    o put back grid & coriolis monitor output.
3113    checkpoint52b_pre
3114    
3115    o call "do_the_model_io" at the beginning (=> dump initial state)
3116    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
3117    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
3118      (need info on NUMBER_OF_PTRACERS)
3119    o missing PTRACERS headers in some routines
3120    o default tamc.h in pkg/autodiff supposed to crash
3121      to ensure proper customization
3122    
3123    checkpoint52a_post
3124    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
3125      - moved surfaceTendencyTice from pkg/seaice to main code
3126      - subroutine FREEZE_SURFACE now limits only surface temperature
3127        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
3128        => new output.txt for global_ocean.cs32x15 & global_with_exf
3129      - keep the old version of FREEZE for backward compatibility;
3130        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
3131      - corresponding modifs for TAF directives
3132    o added surface flux output variables to TIMEAVE_STATVARS
3133    o time-averaged output for pkg/ptracers
3134    o fix problem with ECCO-related divided adjoint
3135      snapshot file was missing some ad-variables,
3136      but no warning issued by TAF
3137    
3138    checkpoint52a_pre
3139    o some bug fixes for #undef REAL4_IS_SLOW
3140    
3141    checkpoint52 = ecco_c52_e35
3142    o after testing adjoints of checkpoint51u_post
3143    
3144    checkpoint51u_post
3145    o this is the post-merge tag of the ecco-branch
3146      (needs another clean checkout and re-testing)
3147    o various natl_box_adjoint configs and results
3148      but no input fields
3149    o obcs adjoint not yet merged!
3150    o adding ECCO global 1x1 and 2x2 degree configs
3151    o updated/extended some store directives for seaice
3152    o pkg/ecco now containes ecco-specific part of cost function
3153    o top level routines the_main_loop, forward_step
3154      supersede those in model/src/
3155      previous input data.cost now in data.ecco
3156      (new namelist ecco_cost_nml)
3157    o in ctrl/ cleaned some cross-dependencies and updated CPP options
3158    
3159    checkpoint51t_post
3160    o this is the pre-merge tag of the ecco-branch
3161    
3162    checkpoint51s_post
3163    o cleanup: removed various obsolete #define-s
3164    o pkg/grdchk
3165      - renamed 'ph-grd 3' to 'grad-res'
3166      - merged from ecco-branch
3167        (remaining bug fixes for obcs gradient checks)
3168      - additional high-precision output for testreport
3169        (grep for 'precision_grdchk_result')
3170    
3171    checkpoint51r_post
3172    o cleaned up or removed CPP_OPTIONS.h files
3173    o updated results for some of the tests to reflect the new
3174      optfiles (-ieee: -O0 instead of -O3)
3175    
3176    checkpoint51q_post
3177    o cd_code:
3178      - moved cd_scheme.F -> cd_code_scheme.F
3179      - separate read_checkpoint from cd_code_ini_vars.F
3180      - separated cd_code part from write_checkpoint
3181      - updated AD_SOURCE, generated .flow
3182      - added CD_CODE_VARS.h to the_main_loop
3183      - Moving cd_code specific store dir.s to pkg/cd_code
3184    o ctrl package totally restructured
3185      - pack/unpack now optional and decoupled from
3186        xx_/adxx_ I/O
3187      - ctrl_pack/unpack cleaned
3188        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
3189      - confined inclusion of AD_CONFIG.h to where necessary.
3190    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
3191    
3192    checkpoint51p_post
3193    o create initial cd_code package
3194      - WARNING: the initialization of fields within packages
3195        is broken because INI_FIELDS (where READ_CHECKPOINT is
3196        called) is called *before* PACKAGES_INIT_VARIABLES.
3197        This seems to be backwards since
3198        1) its important to initially zero the entire field including
3199           the "halo" region
3200        2) zeroing needs to be done *before* reading pickup info
3201           and the pickup call might or might not happen in any
3202           particular run
3203      - this needs an overhaul for R2
3204    o cleanup verification/*/code/GMREDI_OPTIONS.h
3205    o cleanup testreport
3206    
3207    checkpoint51o_post
3208    o bringing AD-related verif's up to date with genmake2
3209      - carbon/
3210      - global_ocean.90x40x15/
3211      - hs.94.1x64x5/
3212      - (front_relax/ )
3213    o (more) consistent directory structure for AD-related verif.'s
3214    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
3215    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
3216    o bug fix in find_alpha.F for MDJWF:
3217      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
3218        change rho -> rho-rhoConst
3219      - replace call find_rho to find_rhonum
3220    o initialisation of rFlx extended to full array (required by TAF)
3221      and shifted to thermodynamics
3222    o removed PTRACERS.h in ptracers routine
3223    o added surfacetendencyPtr to S/R parameter list pracers_forcing
3224    o Correcting initialisations for fVerU, fVerV.
3225    o helping TAF to recognize dependency on kUp for
3226      fVerU, fVerV
3227    o Replacing delZ by delR in pkg/ctrl/
3228    checkpoint51o_pre
3229    
3230    o undid all of cp51 pending some cleanups and discussion
3231    o added the [#include "AD_CONFIG.h"] statement to all files that need
3232       it for adjoint/tl #defines
3233     o re-worked the build logic in genmake2 to support AD_CONFIG.h
3234     o removed tools/genmake since it no longer works
3235    
3236    checkpoint51n_post
3237    o modifications to make FREEZE flux visible to pkg/kpp
3238      - moved surfaceTendencyTice from pkg/seaice to main code
3239      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
3240      - subroutine FREEZE now limits only surface temperature
3241        (this means new output.txt for global_ocean.90x40x15,
3242         global_ocean.cs32x15, and global_with_exf)
3243    o added surface flux output variables to TIMEAVE_STATVARS
3244    
3245    checkpoint51n_pre
3246    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
3247    o added [#include "AD_CONFIG.h"] to all files that use the following
3248      defines:
3249      - ALLOW_ADJOINT_RUN
3250      - ALLOW_TANGENTLINEAR_RUN
3251      - ALLOW_ECCO_OPTIMIZATION
3252    
3253    checkpoint51m_post
3254  o incorporating changes to get TAMC/TAF working in genmake2  o incorporating changes to get TAMC/TAF working in genmake2
3255    - added new TAMC/TAF targets to the Makefile    - added new TAMC/TAF targets to the Makefile
3256    - various cleanups related to package handling    - various cleanups related to package handling
3257      - these changes should have no impact on the forward model
3258    
3259  checkpoint51l_post  checkpoint51l_post
3260  o changes to pkg/cal and pkg/exf that allow and speed-up long integrations  o changes to pkg/cal and pkg/exf that allow and speed-up long integrations

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