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revision 1.132 by jmc, Tue Feb 11 04:32:12 2003 UTC revision 1.1151 by mlosch, Tue Aug 11 15:47:16 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/obcs:
8      - change OB?eta from _RS to _RL and put them into a separate commen block
9      - add code to read OB?eta from a file via obcs_prescribe_read: the code
10        compiles and does not destroy any other experiments, the data is read
11        properly, but the code is not tested in actual applications
12    o ini_mnc_vars.F: if available (ALLOW_CAL), use startTime_1 and 2 to
13      create a meaningful unit attribute for the time coordinate variable
14    o pkg/ebm: add plenty of missing "_d 0" ;
15       update results of experiment global_ocean_ebm (fwd + adjoint tests)
16      Notes: several pieces of code only works for (very) specific set up
17       (domain size, lat range, etc ...); should be documented & stop if one
18       of those assumptions is not meet.
19    o pkg/seaice: add missing "_d 0" in HSNOW initialisation
20       update results of experiments: lab_sea (3 fwd tests + 2 adjoint tests)
21          and offline_exf_seaice (seaicetd + adjoint).
22    o add missing "_d 0" in ShortWave flux penetration (S/R SWFRAC):
23       update results of experiments: lab_sea (4 fwd tests + 3 adjoint),
24        seaice_obcs, global_ocean.cs32x15 (icedyn & thsice) and natl_box (x2).
25    o few changes to pass when compiling with strick checking of arguments
26       across S/R (allow to find few bugs in S/R calls).
27    o pkg/seaice:
28     - seaice_evp: move if-statement out of loop (TEM) at the cost of 11 new
29       2d-fields, for slightly better performance
30    
31    checkpoint61t
32    o pkg/seaice:
33     - remove unused variables in seaice_evp
34     - reduce number of SQRT in seaice_evp and seaice_calc_viscosities
35    o eeset_parms.F, open_copy_data_file.F & ini_parms.F:
36       named file replacing SCRATCH files (for TARGET_BGL & TARGET_CRAYXT):
37       each processor opens a different file (a fix from Matt).
38    o cg2d:
39       use simple EXCH (overlap size = 1 and ignore corners), like in cg3d.F :
40       this reduces number of EXCH calls by 2 when using exch2.
41       For now, keep previous size array for gc2d_nsa.F to avoid Pb with store
42       directives and missing simple EXCH (exch_s3d_rx) adjoint code.
43    o pkg/thsice:
44       add code for Near Infra-Red albedo (from Jeff)
45       (turned on with run-time flag: thSIce_calc_albNIR, in data.ice).
46    o ini_model_io:
47       move (from packages_readparms.F & initialise_fixed.F) to ini_model_io.F
48       MNC & MONITOR initialisation calls; move MNC calls from {pkg}_readparms.F
49       to {pkg}_init_fixed.F for {pkg}= kpp, seaice & shelfice.
50    
51    checkpoint61s
52    o pkg/exch2 (exch2_rxN_cube*):
53       remove last BARRIER (no need to synchronise after getting data from shared
54       buffer (get) as long as any change to buffer (put,recv) is between BARRIER)
55    o change tiling of natl_box (from 2 to 4 tiles) to get it tested with MPI+MTH
56      and generate new output (for the 2 tests) using default rotationPeriod.
57    o pkg/exch2:
58      - always call exch2_*_cube, not exch-1 anymore, if useCubedSphereExchange=F
59        (was already the case with AUTODIFF_EXCH2 defined)
60      - add bj in exch2 arrays and S/R.
61      - can now use pkg/exch2 for regular (non CS) set-up; switch test experiment
62        MLAdjust to exch2 (identical results except with MPI -> truncation diff);
63    o add pkg/longstep for ptracer timestep a multiple of U/V/T/S timestep
64      - adds deltaT argument to the subroutines TIMESTEP_TRACER DWNSLP_APPLY
65        GAD_ADVECTION GAD_CALC_RHS GAD_IMPLICIT_R GAD_SOM_ADVECT
66      - verification experiment natl_box.longstep
67    o build_options: ifort+mpi_aces optfile (following Constantinos advise):
68      allow different versions of ifort (8 or 9) and different versions
69       of mpi (mpich or mpich2) to be used with the same optfile.
70      requires to load a netcdf module and set MPI_INC_DIR (see comments inside
71       optfile). Change testing scripts (example_scripts/ACESgrid) accordingly.
72    o pkg/seaice:
73      fix previous modif (3-level field removed) for old-pickup reading
74    
75    checkpoint61r
76    o pkg/seaice:
77     - clean up the 3-time levels of UICE,VICE,HEFF,AREA in three steps:
78      1. introduce fields for time step (N-1)
79      2. do not use levels 2 and 3 anymore (but keep them)
80      3. replace 3D versions of UICE,VICE,HEFF,AREA by 2D versions. This
81         includes changes to pkg/thsice/thsice_get_velocity.F,
82         model/src/external_forcing_surf.F, pkg/obcs/obcs_apply_seaice.F, and
83         pkg/obcs/obcs_apply_uvice.F.
84     - completely remove code for leap-frog time stepping for second order
85       advection
86     - adjusted adjoint accordingly;
87       gradient checks have improved by an order of magnitude!
88    
89    checkpoint61q
90    o pkg/seaice: fix bug in free slip boundary conditons for LSOR solver
91     - the boundary conditions along open boundaries are unclear, because the
92       associated masks are set to zero and are thus treated as closed when
93       applying the slip-boundary conditions.
94     - move initialisation of grid variables from seaice_init_varia to _fixed
95    o adding doc/diags_changes.txt
96    o model/src:
97      do_the_model_io: rename few pkg S/R which are called from do_the_model_io,
98       to avoid "_diags" naming if no relation to pkg/diagnostics.
99      ini_theta,ini_salt: fix (at least compile the code) reading from NetCDF
100       file and only call PLOT_FIELD_XYZ if debugMode=T.
101      remove few PLOT_FIELD_XY calls outside initialisation.
102      remove few unnecessary BARRIER.
103    o pkg/salt_plume: add SaltPlumeSouthernOcean to allow disabling
104      of salt_plume package in Southern Ocean
105    o pkg/thsice:
106     - fix hOceMxL in overlap (needed for sea-ice advection);
107       update output of experiment global_ocean.cs32x15.icedyn.
108    o pkg/seaice:
109     - make the (placeholder-)tracer IceAge a little more meaningful
110      by avoiding ridging of age due to convergent ice flow
111     - add diagnostics for surface temperature, atmospheric and oceanic
112       heat flux, and atmospheric and oceanic ice growth
113    
114    checkpoint61p
115    o eesupp (global_max & global_sum):
116     - add one more element to buffer (start at index 0) for GL_MAX/SUM output;
117     - remove starting & endding barrier (no longer needed)
118    o pkg/mdsio, writelocal:
119       works also in multi-threaded when LOCBIN_IO_THREAD_SAFE is undefined
120       (remove the STOP): uses shared buffer IO to store data from all threads
121       and then let master-thread write nThreads tiles.
122    o pkg/mdsio (read/write field):
123     - tiled IO done in 1 piece (all levels at a time);
124     - new header file "MDSIO_BUFF_3D.h" with 3-D buffers.
125     - multi-threaded: allow to read/write local (non-shared) array
126       (was already working with singleCpuIO ; now works also without);
127       => no longer needs barrier call after reading a file (added inside
128       mds_read/write field).
129     - move barrier calls outside gather/scatter_2d to mds_read/write_field
130    o pkg/obcs/exf
131      - exf_getffieldrec.F: add a few ". _d 0" and
132                            add code to catch the case fldperiod = 0.  
133      - obcs_precribe_read.F: change if statements so that they match
134                              the variable type (_RL)
135      - add a separate exf_iprec_obcs to exf_set_obcs (by default equal to
136        exf_iprec) as part of namelist EXF_NML_01
137    o pkg/mdsio:
138      - read/write tiled (local) files: read/write 1-level tile chunk at a time
139        (instead of segment of length sNx); expected to speed up tiled IO.
140    o pkg/exch2:
141      - take buffer copy from/to array out of S/R exch2_send/recv into new
142        S/R exch2_put/get ; Exch of local variable now works with MPI+MTH
143        (tested by removing commom block statement in SOLVE_FOR_PRESSURE.h).
144      - ad version of send/recv no longer needed (but needs exch2_ad_put/ad_get)
145      - simplify argument list of S/R exch2_get_uv_bounds and exch2_get_scal_bounds
146        (which replaces exch2_get_recv_bounds & exch2_get_send_bounds) by
147        including Topology header file (and common blocks).
148      - implement EXCH_IGNORE_CORNERS in scalar exchange (rx1);
149        remove 2nd exch call in exch2_s3d_rx (no longer needed).
150      - document S/R arg. list (+ update some comments)
151    o pkg/seaice:
152      - added SEAICE_CLIM_AIR code, which permits modulation of surface air
153        temperature and humidity over sea ice based on climatological values.
154      - clean up computation of Hibler+Bryan (1987) stress coupling for the case
155        of LSR (this change is expected to change the results slightly because now
156        it uses slightly difference moduli from the second last LSR solution, but
157        that is more consistent with the stress computations; this part of the code
158        is not tested in the verification experiments)
159      - fix diagnostics for flux of ice in case of B-grid
160      - turn strain rates eij and press into global fields within global
161        common block in SEAICE.h for more straighforward diagnostics
162      - fix diagnostics for principal stress components, press, zeta, eta
163        to give something meaning full
164    o change tiling of global_ocean.cs32x15 (12 tiles, 32x16) and generate
165      new output (all 4 tests) using default rotationPeriod.
166    o pkg KPP:
167      - add flag (LimitHblStable) to avoid limiting BL depth under stable conditions
168      - fix vertical indices in RI_IWMIX (match between KPP grid from 0 to Nr+1
169        and normal grid from 1 to Nr)
170    o Fix computations of L4rdt in mom_calc_visc.F
171    o eesupp:
172      new S/R ALL_PROC_DIE (like EEDIE, without irrelevant threads err msg):
173      should be called before a "stop" if we know that all process are going
174      to stop; if one Proc does call this S/R, will hang in MPI_FINALISE.
175    
176    checkpoint61o
177    o pkg/exch2: change check_depths to issue just a warning (instead of error+stop)
178    o model/src/ini_curvilinear_grid.F:
179       compute angleSin/CosC when they are not read from a file
180    o pkg/seaice:
181       add pseudo time stepping for LSOR
182    o pkg/exch2:
183       temporary fix for exch2_s3d_rx; update results of exp. hs94.cs-32x32x5.impIGW
184    o pkg/seaice:
185       Adding separate sea ice albedo, drag coefficients, and HO in Southern
186       Ocean from those in Arctic Ocean.  See *_south in SEAICE_PARAMS.h
187    o SingleCpuIO:
188       fix bug put before chkp61n (May 11), when more than 2 MPI cpu are used.
189    o pkg/seaice:
190       put exchanged variable in (local) common block for MPI+Multi-Threads
191       to work (necessary with exch1, and for now with exch2 too).
192    o verification: to get more experiments tested with mpi, mth and mpi+mth,
193      change tiling of:
194       aim.5l_Equatorial_Channel, aim.5l_LatLon, dome, exp4, global_ocean.90x40x15,
195       hs94.cs-32x32x5, MLAdjust, offline_exf_seaice & tutorial_plume_on_slope
196      update output of exp:
197       exp4, global_ocean.90x40x15(+.dwslp), MLAdjust(all 5),
198       tutorial_plume_on_slope and hs94.cs-32x32x5 (use default rotationPeriod)
199      + ideal_2D_ocean: use default rotation period + test Global_Sum_SINGLECPU
200                       (note: output.txt generated on faulks using only 1 tile)
201    o eesupp & mdsio (SingleCpuIO):
202     - remove MISSING_TILE_IO (from MDSIO_OPTIONS.h), replaced by run-time
203       parameter "W2_useE2ioLayOut" (read from file "data.exch2").
204       Note: was not effective for globalFile & useSingleCpuIO=F; now fixed.
205     - move MDSIO_SCPU.h (pkg/mdsio) to EEBUFF_SCPU.h (eesupp/inc).
206     - fix GLOBAL_SUM_SINGLECPU when using Exch2; re-use same buffers and same
207       gather/scatter S/R as with SingleCpuIO (=> 1 less 2D global RL array).
208    o pkg/exch2:
209     - new code to set-up W2-Exch2 topology (replace matlab-topology-generator):
210       read parameter file "data.exch2" if it exists; otherwise try default regular
211       cube without blank-tile; new header file "W2_EXCH2_SIZE.h";
212     - update matlab-topology-generator (exch2_setup_cs6_print.m) to be compatible
213       with new code (not to be used, just as a backup solution).
214     - add examples (e.g., for lat-lon-cap_120) of parameter file "data.exch2"
215       in utils/exch2/input.
216    
217    checkpoint61n
218    o eesupp & mdsio (SingleCpuIO):
219      - move mapping to global io-buffer inside gather_2d/scater_2d: this save
220        memory (1 less 2D global RL array); skip 1 buffer copy; and only send/
221        receive real*4 array (instead of real*8) to read/write 32.bit files.
222        (new template for gather_2d/scater_2d, new set of S/R MDS_PASS_R4,8toRL,S
223         and remove new mapping S/R)
224    o pkg/mdsio: in preparation for topology-generator within pkg/exch2:
225      - Change declaration of SingleCpuIO buffer, reduced to only 1 dim.:
226        xyBuffer_size, which is set to W2_ioBufferSize from W2_EXCH2_PARAMS.h
227        when using exch2. Add S/R to map global io-buffer to global model array.
228      - uses exch2_global_Nx,y instead of exch2_domain_nxt,nyt.
229    
230    checkpoint61m
231    o write_utils : change WRITE_1D_R8 to WRITE_1D_RL
232      and add 3 other S/R for other types (R4,R8,RS).
233      Change calls to WRITE_0D/1D_R[4,8,S,L] to match the type of argument.
234    o eesupp/inc/CPP_EEMACROS.h (EXCH & GLOBAL_SUM/MAX macros):
235     - ensure suffix (_R4,_R8,_RS,_RL) correspondance between macro and S/R ;
236     - reduce number of macro definitions (keep only those which are used);
237       can always call directly the corrresponding S/R if needed.
238     - everywhere in the code: change macros (EXCH & GLOBAL_SUM/MAX) suffix
239       _R4/_R8 to _RS/_RL when applied to _RS/_RL variable.
240     Fixed wrong type of arg in:
241       atm2d/put_ocnvars.F cheapaml/cheapaml.F ocn_compon_interf/ocn_apply_import.F
242       ctrl/ctrl_map_ini_ecco.F seaice/seaice_do_diags.F seaice/seaice_model.F
243     To fix: global_sum of var in common block is wrong (multi-threaded) in:
244       dic/dic_atmos.F ebm/ebm_area_t.F ebm/ebm_zonalmean.F sbo/sbo_calc.F
245     To fix: aim_v23/aim_do_co2.F (BARRIER & GLOBAL_SUM within bi,bj loops)
246    o adjustment.cs-32x32x1: test "blank tiles" when compiling with mpi; 2nd
247      "nlfs" mpi test is going to stop when checking for unconnected tile egdes.
248    o eesupp/src: new S/R to stop everyone when 1 (or more) Proc. find an error
249    o pkg/exch2: new S/R EXCH2_CHECK_DEPTHS to check that unconnected tile
250      edges are closed (zero depth); might happen with "blank tiles";
251      for now, disabled if using OBCS.
252    o tools/gemake2: delete modifs from March 27-29 2009 (with option "-mpi":
253      link *_mpi files from "MODS" dir) to return to a strait-forward behavior.
254    o move read_write.F to write_utils.F ; new parameter (maxLengthPrt1D)
255      to reduce length of 1.D array print in STDOUT.
256    o adjustment.cs-32x32x1: changed to oceanic test with 1 continent
257      + use 48 tiles (16x8): this will allow to test "blank tiles".
258    o start to test MPI + multi-threaded (change testreport to skip tests
259      where number of tiles do not match).
260    o genmake2: add option "-omp" to turn on Open-MP ;
261      passed to testreport (if using -mth) ; merge few (*+mth) optfiles.
262    o pkg/exch2 (+ utils/exch2): ignore blank tiles (instead of removing them)
263      and keep the original tile numbering. Note: compatible with old
264      W2_EXCH2_TOPOLOGY.h & w2_e2setup.F topology files.
265    
266    checkpoint61l
267    o Overlaps had been forgotten in calculating ijk keys : fixed
268    o fix cyrus makedepend for gcc 4.4
269    o experiment fizhi-cs-aqualev20:
270      switching to new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE)
271      and generate new output. Note: new output is much closer to the old
272      one (v1.8) generated with pgf77 -O2 on Mar 14 2007 than it is from
273      the previous one (v1.9) generated with pgf77 -O0 on Jun 13 2007.
274    o pkg/fizhi:
275     - change to avoid indices going deliberately over array-bounds
276     - remove unnecessary MPI stuff
277     - perpetual spring equinox with "#define FIZHI_USE_FIXED_DAY"
278     - new version of S/R GETPWHERE available with #define TRY_NEW_GETPWHERE:
279       does not go over array-bounds and therefore returns reliable output.
280     - in fizhi_driver.F & fizhi_turb.F, fix "get_alarm" calls:
281       this S/R has 4 output arguments, which are used inside "get_alarm";
282       when it is called with the same variable "ndum" in place of several
283       output arguments, this produces weird side effect inside "get_alarm"
284      (e.g., datein=dates(n) is overwritten by timein=times(n) since both
285       datein & timein, resp. 2nd and 3rd arg., are pointed to the same "ndum"
286       address) and produces error.
287    o tools/gemake2: (March 27-29 2009)
288      with option "-mpi": link *_mpi files from "MODS" dir (this is what
289      testreport does).
290    o lab_sea experiment: change from 2x1 tiles to 2x2 tiles and regenerate output
291    o pkg/seaice: fix bug in new version of S/R SEAICE_LSR.F:
292       update lab_sea.lsr & lab_sea.salt_plume results
293    o pkg/seaice:
294      Major overhaul of the LSOR solver: change discretization from original
295      finite differences to finite volume. The old routine is still in the
296      file seaice_lsr.F and can be turned on with the CPP-flag
297      SEAICE_OLD_AND_BAD_DISCRETIZATION
298      Along with this change, the discretization of the strain rates is changed.
299      The same flag turns on the old discretization in seaice_calc_strainrates.F
300      All verification experiments with seaice are affected (except for
301      seaice_exf_offline); global_ocean.cs32x15/input.icedyn recovers the old
302      results by setting the above flag.
303      Further changes involve changes in defaults:
304      - ALLOW_FLOODING is defined and turned on by default
305      - SEAICEadvSnow = .true. is now the default
306      - SEAICEadvSalt = .true. is now the default
307      - SEAICEadvAge  = .true. is now the default
308      - SEAICE_clipVelocities  = .false. is now the default
309                                         (as per J. Zhang's recommendation)
310      - B-grid, and thus not tested: SEAICE_TEST_ICE_STRESS_1/EXPLICIT_SSH_SLOPE
311        is defined, SEAICE_TEST_ICE_STRESS_1 is renamed into SEAICE_BICE_STRESS
312      - seaice_growth: replace computation of UG by a simple copy from wspeed
313    
314    checkpoint61k
315    o pkg/seaice: a few bug fixes mostly concerning the metric terms:
316      seaice_lsr: fixed a few metric terms,
317                  affects lab_sea.lsr, lab_sea.salt_plume, seaice_obcs
318                  add more debugging diagnostics
319      seaice_evp: removed superfluous many metric terms of FV discretization
320                  of stress divergence
321                  affects lab_sea, lab_sea.hb87
322      seaice_ocean_stress: removed superfluous many metric terms of FV discretization
323                  of stress divergence for non-evp solver
324                  (this part is not tested anywhere)
325      seaice_calc_strainrates: fixed a bug in no-slip boundary conditions,
326                  they were effectively only half slip
327                  affects lab_sea.hb87
328      updated all relevant verification experiments (except lab_sea//output_adm.txt
329        which was left over, but fails at level 7 & 6)
330    
331    checkpoint61j
332    o pkg/seaice: turn a few hard wired parameters into run time parameters
333    o pkg/seaice/exf/monitor: turn netcdf coordinate variable T into model
334      time in seconds as promised by the usints in seaice_monitor and exf_monitor
335    o pkg/mnc: fix the coordinate variables for multi-tile curvi-linear grids
336      that are not cubed-sphere grids
337    o pkg/seaice: fix a bug for the rare case of SEAICE_VECTORIZE_LSR
338    o pkg/ctrl:
339      fix bug in ctrl_depth_ini.F (EXCH_XYZ was applied to 2-D field xx_r_low)
340    o non-hydrostatic (calc_gw.F):
341      fix viscA4 on CS-grid + fix diagnostics: Wm_Diss & Wm_Advec
342      update output of exp. global_ocean.cs32x15.viscA4
343    o remove backward compatibility for thetaMin,phiMin
344      (replaced by xgOrigin,ygOrigin on Jan 27, 2009)
345    o pkg/exf: fix a serious bug in exf_set_uv.F: do a rotation of the
346      interpolated wind field not only for curvilineargrid=.true., but also
347      for a rotated grid (rotateGrid=.true.)
348    o pkg/exf: add capability to bypass interpolation for runoff
349      by setting yet another CPP-flag
350    o eesupp/src, B-grid exchange:
351      add simple (6 tiles, non MPI) CS exch + standard interface S/R.
352    o autodiff
353      new CPP option ALLOW_TAMC_SINGLEPREC_COMLEV
354      allows to switch to single-prec common blocks;
355      corresponding switch occurs in tamc.h, integer isbyte
356      TAF store directivs "byte" and "kind" seem equivalent;
357      Most tamc.h have been updated correspondingly.
358    
359    checkpoint61i
360    o autodiff:
361      fix autodiff_sore/_restore indices for obcs
362      (spotted by I. Hoteit, M. Mazloff)
363    o pkg/autodiff, pkg/ctrl:
364      Add flag to reduce all tapelev I/O to single-prec.
365      In data.ctrl set
366        doSinglePrecTapelev = .TRUE.
367    o model/src/ini_curvilinear_grid.F, new grid-file format without EXCH2:
368      check in hack for SX8 compiler (for dxV, dyU); remove it afterwards.
369    o pkg/shelfice: fix bug with SHELFICEconserve flag, prepare for
370      real fresh water flux (not yet)
371    o pkg/mdsio & rw:
372     - add argument & option to S/R MDS_WRITEVEC_LOC (avoid Open/Close & write-meta)
373     - add simple interface S/R to MDS_WRITEVEC_LOC in pkg/rw: WRITE_GLVEC_RX.
374    o pkg/flt:
375     - replace FLT_INIT by 3-steps standard initialization S/R: readparms,
376       init_fixed & ini_varia.
377     - clean-up & simplify linear interpolation S/R:
378       move flt_bilinear.F -> flt_interp_linear.F ; add arg. myThid.
379     - fix some indices (mainly vertical index) ; add IMPLICIT NONE.
380     - more efficient I/O, using new options of MDS_WRITEVEC_LOC S/R.
381     - add vert. coordinate & horiz. indices to output files.
382     - change vertical position in initial condition, from index to depth [m].
383     - store horizontal (decimal) indices i,j in common block (instead of coord. x,y)
384       (easier to get to a curvilinear grid) ; delX,delY no longer used.
385    o pkg/ggl90: a few modifications:
386     - fix bottom boundary condition, and interpolation of KappaE
387       near top and bottom
388     - use same set of viscosity/diffusivity for TKE/momnetum/tracer
389     - add smoothing option as in Blanke and Delecluse (1993) (--> ALLOW_GGL90_SMOOTH)
390     - add a few options for mixing-length upper limit (--> mxlMaxFlag)  
391    o rename thetaMin,phiMin -> xgOrigin,ygOrigin
392      (maintain temporary backward compatibility, until next checkpoint)
393    
394    checkpoint61h
395    o pkg/diagnostics with "periodic averaging diagnostics":
396      fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
397    o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
398    o pkg/obcs: fix loop ranges for balancing code
399    o pkg/flt:
400     - improve criteria for finding which tile owns a float.
401     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
402    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
403      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
404      with ocean biogeo)
405    o pkg/flt:
406     - do some cleaning and fix the restart ;
407     - add output.txt in flt_example/results to get this pkg tested.
408    o genmake2: add an EXTENDED_SRC option and flag.
409       for now, cannot be turned on on command line (only through genmake_local)
410    o pkg/mdsio: read/write vector:
411     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
412     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
413       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
414     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
415      (drop to 4 digits matching for grad). But this test does not look very
416      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
417    
418    checkpoint61g
419    o pkg/flt:
420      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
421       + make OPTIONS file more standard.
422      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
423      - fix _BYTESWAPIO CPP-Flag
424      - standard reading of file-parameter "data.flt"
425      - fix argument list of S/R FLT_RESTART
426      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
427    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
428    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
429      a still unfixed compiler/optimization bug
430    
431    checkpoint61f
432    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
433      update results of global_ocean.cs32x15.icedyn test.
434    o move getcon.F from model/src to pkg/fizhi.
435    o pkg/exf: add parameter for extrapolation of temp up to the surface
436       and option to prevent negative evap (in bulk_largeyeager04 only).
437    o Prather Advection scheme: fix tracer conservation for divergent flow
438      (e.g., when using NonLin Free-Surface).
439    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
440    o gmredi (Visbeck-variable-K):
441     - add more parameters to Visbeck-variable-K.
442     - use a 5 points average for dSigmaR in Visbeck-K calculation
443       (more "homogenous": same stencil and same weights as in dSigmaH)
444     - update output of ideal_2D_oce experiment.
445    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
446      (#undef REAL4_IS_SLOW)
447     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
448       coordinate variable
449     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
450       (surface forcing fields), removes some of the functionality
451     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
452     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
453       probably not all: copy _RS surface flux fields to RL field before
454       calling DIAGNOSTICS_FILL
455     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
456       real*4 (CALL EXCH_*_RS) versions.
457     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
458       (generate new output).
459    
460    checkpoint61e
461    o gmredi (Visbeck-variable-K):
462      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
463      - change computation of Visbeck-K where Slope > Smax :        
464        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
465        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
466    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
467      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
468    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
469    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
470      does not become too large (to avoid precision problems in implicit-diffusion
471      solver); update ideal_2D_oce output.
472    o pkg ggl90:
473      - in ggl90_cal.F: compute only one set of visc/diff, used to
474        step forward TKE/T/S/momentum
475      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
476        have Prandlt =1)
477    o gmredi (fm07):
478      - add lower limit on Transition layer thickness + lower limit on 1/lambda
479      - allow to set few more params from data.gmredi
480    o pkg ggl90:
481          - add missing sqrt(2) factor in computation of mixing length
482            scale in ggl90_calc.F
483            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
484    
485    checkpoint61d
486    o adjoint modifs
487      - adapt to new field rhoInSitu
488      - allow to revert from StoreDynVars2D, StoreDynVars3D
489        to individual fields
490        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
491    o store 3-D (in-situ) density in commom block (DYNVARS.h)
492     - save 1 rho computation.
493     - no longer modify T & S inland when using down_slope pkg.
494    o gad_som : allow to switch to SOM advection for T & S without corresponding
495      pickup files (using new S/R: MDS_CHECK4FILE).
496    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
497      (for useSingleCpuIO to work in multi-threaded)
498    o pkg/shelfice:
499     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
500       with SHELFICEtopoFile in data.shelfice
501     - move code for reading ice shelf topography and modifying hFacC into separate
502       subroutines of the shelfice package
503     - separate initialisation of "fixed" and "variable" variables
504     - kTopC is not (yet) replaced by kSurfC, although this is possible
505    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
506    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
507      and rename:
508      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
509      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
510    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
511    
512    checkpoint61c
513    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
514      to add mass source/sink of fluid in the interior (3-D generalisation
515      of oceanic real-fresh water flux).
516    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
517    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
518    o new pkg: down_slope
519      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
520      - presently, modify T & S inland (dwnslp_calc_rho.F).
521        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
522      - implementation for ocean in P-coords not tested.
523      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
524    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
525      (to facilitate conversion of oceanic pkg to p-coordinate).
526    o change FIND_RHO to FIND_RHO_2D :
527      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
528    o new pkg: cheapaml
529    
530    checkpoint61b
531    o exch2:
532      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
533      - no longer depend on the order sequence (N,S,E,W).
534      - 3rd exchange no longer needed (tested with 24 tiles).
535      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
536      - exch_UV_A-grid readily available (but not yet tested).
537      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
538      (both are no longer needed) in exch_uv: no effect in forward run; but
539       get truncation error differences with adjoint exch.
540    o exch2:
541     - change index-bounds storage (moved from target to local tile,
542       more intuitive this way) ; rename/remove some variables.
543     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
544    
545    checkpoint61a
546    o exch2/matlab-topology-generator:
547      fix bug in index bounds for N-S internal exchange (hard to tell if this
548      had any effect on the solution).
549    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
550      is exceeded
551    o testreport: modify syntax of awk, so that it works also with
552      awk, and not only with nawk and gawk
553    
554    checkpoint61
555    o autodiff
556      Change default for TAF usage by removing argument '-nonew_arg'
557      This changes TAF subroutine argument list (ordering of active var.)
558      Omission of this flag leads to incompatibility w.r.t. TAMC
559      To restore TAMC-compatibility, need following modifs:
560      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
561      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
562      Tested TAF version is 1.9.22
563      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
564    
565    checkpoint60
566    --->>> This is the last checkpoint for which generating the adjoint
567    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
568    --->>> by default.
569    --->>> Future checkpoints will ommit this flag by default.
570    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
571    o pkg/grdchk: Add gradient check to etan0 perturbations.
572    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
573    o pkg/autodiff: more flexibility in zeroadj.
574      model/src: modifying do_oceanic_phys.F accordingly.
575    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
576    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
577      special setup of gmredi for which the adjoint is stable
578      enough for parameter optimization.
579    o bridging the gap between eddy stress and GM.
580      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
581          along with a change in CPP option (now ALLOW_EDDYPSI).
582      -> when using GM w/ GM_AdvForm:
583          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
584          is applied either in the tracer Eq. or in momentum Eq.
585          depending on data.gmredi (intro. GM_InMomAsStress).
586      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
587      The key modifications are in model/src/taueddy_external_forcing.F
588      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
589    
590    checkpoint59r
591    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
592      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
593      fix option to read coriolis(@ cell-corner) from files with CS-grid.
594    o pkg/mnc: add some attributes to standard 1D-coordinate variables
595    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
596      mass points, when using mnc for output
597      - add runtime parameter (missing_value, missing_value_int) to override
598        default (which is the value of getcon('UNDEF'))
599    o pkg/mnc: prepare mnc for the actual use of missing values with the
600      diagnostics package: small fix in mnc_cw_readwrite.template and more
601      initialisation of never used fields
602      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
603      versions
604    o pkg/thsice/thsice_ini_vars.F added default initial values so that
605      thermodynamics sea ice solver does not blow up when some initial fields
606      are missing.
607    o move from external_forcing_surf.F to ini_forcing.F
608      the p-coord. hack consisting in using pLoad to set phi0surf ;
609      update output of tutorial_global_oce_in_p (affected @ truncation level).
610    o Freshen up a bit hs94.1x64x5, notably:
611      remove rotationPeriod and tRef=5*0. (adjoint only), and add
612      exactConserv=.TRUE.
613    o pkg/generic_advdiff:
614      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
615      applies to files where Temperature & Salinity 2nd Order moments are used.
616    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
617      this uses a dynamically allocated internal state data structure
618      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
619      and requires a fortran 90 compiler
620    
621    checkpoint59q
622    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
623       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
624    o Refresh tutorial_global_oce_biogeo, notably:
625      - change bathymetry (put back seamounts in ACC, use hFacs)
626      - change EOS (POLY3 --> JMD95Z)
627      - use Bryan-Lewis vertical diffusivity
628      - use multidimensional advection
629      - remove old virtual virtual in dic pkg, now done through ptracer pkg
630      - change a couple of parameters in dic pkg
631    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
632    o pkg/obcs: change default to OBCSfixTopo = .true.,
633      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
634      - replace "debugMode" with "debugLevel .GE. debLevB"
635    o implementation of TAF directives for gchem,cfc,dic
636    o remove "exp5" (replaced by tutorial_deep_convection).
637    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
638      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
639      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
640      --> changes results in exp4, seaice_obcs
641    o tutorial_deep_convection :
642      update the set-up and increase resolution and domain size ; start
643      from pseudo initial conditions = output at t=120mn in order to see
644      something happening when running testreport.
645    o pkg/seaice: add os7mp as an advection scheme
646                  add check for advection schemes
647                  add a flag for restoring T and S underneath sea ice
648    o pkg/my82: add netcdf-support and diagnostics
649    o thsice pkg:
650      - Now hsMax limits snow height by turning it into ice following
651        flooding scheme (and now conserving energy)
652      - Slight rewriting of the formula in thsice_calc_thick.F
653      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
654      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
655    
656    checkpoint59p
657    o gchem / dic / cfc :
658      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
659      - add new parameter files: "data.dic" & "data.cfc" ;
660      - various re-arrangement in initialisation & header file ;
661      - fix tutorial_global_oce_biogeo for multi-threaded test.
662    o pkg/dic: test for "pickup_dic" file when restarting ;
663      if no pickup-file, can restart with a re-initialised pH (same as it did
664      before) providing pickupStrictlyMatch is set to False.
665    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
666      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
667    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
668      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
669    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
670     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
671       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
672    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
673       scheme to use for vorticty-term ;
674     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
675       (with default selectVortScheme, return to original discretisation)
676     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
677    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
678    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
679      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
680      also fix diagnostics VISCAHW & VISCA4W.
681    
682    checkpoint59o
683    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
684    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
685      move a few statemens out the main loop into separate loops
686    o pkg/shelfice:
687      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
688        (kg/m^2/s), does not break tests, because in verification/isomip,
689        rhoConstFresh=rhoConst (by accident)
690      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
691      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
692        new file model/src/seawater.F, so that they are available for all pkgs.
693      - convert potential temperature into in-situ temperature. This changes the
694        isomip tests => update tests
695    o add a flag writePickupAtEnd (default=true) to be able to suppress
696      writing a pickup at the last timestep
697    o tools/mpack-1.6 :
698      - disable automake (not working) and autoconf (not needed).
699      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
700        also cleaner with much less compilation warnings.
701    o pkg/profiles:
702      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
703      (for "less than 32 characters name" compiler requirement)
704    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
705      conditions that have a different sampling frequency than S/T/U/V obcs
706    o pkg/diagnostics (stats-diags):
707      - fix global Min/Max in case 1 processor get only empty tiles
708    o genmake2: replace (4 times)
709         make genmake_tc_1.o >> genmake_warnings 2>&1
710      with
711         COMM="$CC $CFLAGS -c genmake_tc_1.c"
712         echo $COMM >> genmake_warnings
713         $COMM >> genmake_warnings 2>&1
714      to make genmake2 always see the value of CC as specified in the optfile.
715    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
716      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
717      - modify verification advect_cs test to test SOM-advection on CS-grid.
718    o pkg/ctrl:
719      - Rewrite of ctrl_map_ini_ecco.F,
720        introducing a generic routine (ctrl_map_ini_gen.F).
721      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
722    
723    checkpoint59n
724    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
725      number in dedicate array "hdiag":
726      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
727        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
728      - many small changes (integer format) for large number of diagnostics
729      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
730        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
731    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
732      usingSphericalGrid, this allows to define the rotated grid coordinates
733      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
734      geographical coordinates according to the inverse of the rotation defined
735      by the Euler angles, so that Coriolis parameter and online-interpolation by
736      exf works with the geographical coordinates on XC/YC/XG/YG.
737      Naturally, this feature does not work with all packages, so some
738      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
739      profiles), because there the coordinates are assumed to be regular
740      spherical grid coordinates.
741    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
742      - introduce isopycnal diffusion coefficient control.
743    o tools/adjoint_options:
744      - additional control vector components.
745    o pkg/mnc: have mnc create marginally meaning full coordinate variables
746      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
747    o pkg/mypackage:
748      - add example of read/write pickup for state-var ;
749      - add entry points to the main code for state-vars diags & write-pickup.
750    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
751      transitions for useExfYearlyFields
752      - add new subroutine that determines the file to read from for
753        use*YearlyFields = .TRUE. and .FALSE.
754      - add a verification experiment to global_with_exf that tests
755        useExfYearlyFields with USE_EXF_INTERPOLATION defined
756    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
757      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
758      subroutines (which could be generated from a template, because they are
759      almost identical), for now they are included in obcs_prescribe_read.F for
760      simplicity
761    o pkg/exf:
762      - add a little more diagnostic to exf_interp_read (in analogy to
763        mds_read_field, can be turned off with debugLevel < debugLevA=1)
764      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
765        ugly but fast by unrolling short inner loops, inserting a unroll=8
766        directive in routine lagran, and splitting a loop and making do while the
767        outermost loop (the latter requires the intoduction of index arrays)
768    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
769    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
770      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
771    o verification/seaice_obcs: updated for restart test and latest options
772    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
773      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
774      for now this is only available for the C-grid code and also within
775      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
776    
777    checkpoint59m
778    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
779      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
780    o gad_som : fix flux output (& diagnostics) to have same units as other  
781      advection scheme fluxes (was previously multiplied by deltaT).  
782    o added verification/seaice_obcs both to test seaice open boundaries
783      and to provide an example matlab scrpt for generating them
784    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
785    o pkg/salt_plume: clean up salt_plume_frac.F to
786      remove redundancy in PlumeMethod 1 and 4
787    o pkg/kpp: added saltplume diagnostics
788    o pkg/obcs and pkg/seaice:
789      - do not set uice and vice to zero when OB*icefile are unspecified
790      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
791      - moved seaice tracer obcs after call to seaice_growth
792    o pkg/salt_plume: added various options for salt plume depth
793      criterion and for vertical distribution of the salt
794    
795    checkpoint59l
796    o pkg/ptracers: new version of ptracers pickup:
797      read meta file and write only fields which are needed to restart.
798      ( same logic as main pickup file ; also using pickupStrictlyMatch )
799    o pkg/seaice:
800      - add timescale for melting due to warm mixed layer as a means of
801        setting SEAICE_availHeatFrac more conveniently
802      - add a CPP-flag/runtime parameter check for flooding algorithm
803      - reformulated availHeat in seaice_growth.F to be independent of AREA
804    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
805      unit changes
806    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
807    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
808      SX vector computer.
809    o pkg/seaice:
810      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
811        seaice forcing fields can now be read only through pkg/exf
812      - removed some unused halos
813    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
814    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
815      or U/VICE from U/VWIND before computing U/VSTRESS
816    
817    checkpoint59k
818    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
819      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
820    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
821      all experiments pass when compile with un-initialised var. checking option.
822    o added pkg/salt_plume
823    o script to test restart (for now, in MITgcm_contrib/jmc_script)
824    o pkg/seaice: new read/write pickup version.
825      read meta file and write only fields which are needed to restart.
826      ( same logic as main pickup file ; also using pickupStrictlyMatch )
827    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
828    o lab_sea.hb87: modify the domain & update output.hb87.txt :
829      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
830      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
831      process. Fixed here by closing the domain at the Northern boundary.
832    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
833    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
834      a set of consecutive levels in/from a 3-D array.
835    o pkg/ptracers:
836      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
837      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
838    
839    checkpoint59j
840    o in pkgs: dic, obcs, offline, rbcs:
841      standard way to compute coeff. for time interpolation between 2 time reccords
842      which retains full precision (& make results less dependent on compiler).
843      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
844    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
845      packages instead of reading ice cover and wind speed separately
846    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
847     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
848      to allow to compile customized code before the update)
849    o cleaning-up:
850      - fix CPP instruction syntax in pkg/obcs
851      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
852        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
853      - fix some threads issue in IO parts.
854    o pkg/dic:
855      - add tons of "_d 0" (--> much better testreports !)
856       and then update outputs of tutorial_global_oce_biogeo
857    o pkg/mom_fluxform:
858      add a special version of momentum advection intended to conserve momentum
859      next to a bathymetry step or a coastline edge. (default = off = #undef)
860    o new read/write pickup version:
861      - for now, only implemented for main (mdsio) pickup file.
862      - write out only what is needed to restart; merge pickup_nh , pickup_ph
863        and main pickup together.
864      - read meta file; read only what is needed to restart; stop if a field
865        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
866        if it make sense (even if the restart is not perfect).
867      - if no meta file, assume that pickup to read corresponds exactly to
868        a pickup that would currently be written.
869      - read pickup written in the old format (until checkpoint59i) if it
870        recognizes an old meta file (no field-list).
871      - add a meta file in exp. which starts from a pickup: 2 cases:
872        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
873         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
874        b) a meta file describing the content of the associated pickup file
875         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
876    o pkg/mdsio & pkg/rw:
877      - new routine to read a meta file ; new set of routine to read
878        Multiple-fields file (with meta file).
879    o added open boundary conditions capability for seaice
880        HSNOW, HSALT, UICE, and VICE
881    
882    checkpoint59i
883    o adjoint:
884      * fix multiDimAdvection adjoint
885        (partial recomputation problem by TAF for fVerT(:,:,kDown)
886        and comlev1 size definition (maxpass vs. max. number of tracers)
887      * verification/global_ocean.90x45x15 adjoint now tests
888        NLFS and multiDimAdvection using DST3 (=30)
889      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
890    o pkg/kpp: add "_d 0" to real constant (if missing);
891      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
892      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
893    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
894      for internal parameters related to restart process (formerly from PARAMS.h)
895      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
896    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
897      as argument. (only atm2d & obcs write_pickup have not yet been updated)
898    o pkg/monitor:
899      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
900      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
901      - account for deep Atmosphere factor and density factor (anelastic)
902    o added open boundary conditions capability for seaice HEFF and AREA
903    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
904      thermodynamics
905      - requires a little reorganization, which affects the testreport results
906        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
907        so that now the conservative form is tested
908      - add a few comments
909    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
910    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
911    o add new diagnostics to seaice: advective, diffusive fluxes (only for
912      multidim-advection, for scheme 2 they are not filled) and transports,
913      thermodynamic growth rates
914    o change units of EmPmR (inside the code, + within coupling interface)
915      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
916      Affects results @ truncation level (cg2d match) and update output of
917       experiments: lab_sea(6), global_ocean.90x40x15(10),
918      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
919      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
920      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
921      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
922    
923    checkpoint59h
924    o pkg/exf:
925      - improve vectorization by moving if-statement out of loops in
926        exf_mapfields, exf_radiation
927      - exf_bulkformulae.F: introduce 2D fields and vectorize code
928    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
929    o testreport:
930      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
931        monitor & update offline_exf_seaice exp. output.
932      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
933    o pkg/seaice:
934      - bug fix in the evp solver: boundary conditions were affected be
935        masking of zMax/zMin (changes results)
936      - minor bug fix in boundary conditions in seaice_calc_strainrates
937        (changes results for no_slip)
938      - seaice_lsr.F: make interpolation of eta dependent on boundaries
939      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
940      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
941        stress formulation and no-slip boundary conditions
942    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
943      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
944    o pkg/seaice: a first HSALT time stepping equation has been checked in
945    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
946      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
947      without requiring DO-IF statements
948    o pkg/thsice:
949      use continuous power-law function for partition of energy between lateral
950      melting/freezing and thinning/thickening ; old code using step function
951      still available with #undef THSICE_FRACEN_POWERLAW
952      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
953    o testreport: change AD testing : check against results/output_adm.txt
954      using same scripts as for forward test.
955    
956    checkpoint59g
957    o adjoint testing: in preparation for changing testreport:
958      - output format: cost and grad written on separated lines
959      - ad output results in directory "results" (instead of "results_ad")
960    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
961    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
962    o pkg/ecco: allow user defined cost function contributions
963    o testreport:
964      Allow to choose (per experiment) the list of tested output variables
965       and the main variable (used to issue a pass/FAIL ) ;
966      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
967      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
968      Also modify printing of summary:
969       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
970       b) echo the list of tested variables in the individual summary.txt of
971          each experiment.
972    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
973      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
974      (but still depend on the tile decompostion of the domain).
975    o pkg/seaice: change a discretization detail to make the B-grid code
976      "more symmetric". This change is likely to remove all "ridges/leads" that
977      where quasi-aligned with the grid in B-grid solutions. It may also be
978      the solution to the stress coupling issues with the B-grid.
979    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
980      remove .cvsignore from input dir. (since testreport no longer run here).
981    o pkg/thsice:
982     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
983     - fix reshaping of sea-ice just after advection:
984       melt all the ice only if ice-volume is too small.
985     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
986       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
987     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
988    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
989      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
990    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
991      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
992      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
993      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
994      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
995      -> update output.txt
996    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
997     this affects truncation error: -> update output.txt of exp:
998      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
999      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
1000    
1001    checkpoint59f
1002    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
1003    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
1004      a bounded range (in forward mode)
1005    o pkg/ecco, ctrl, autodiff and mom_common:
1006     internal parameter controls, completements of implementations
1007    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
1008    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
1009      (not seem any difference in testing results).
1010    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
1011       at face corners.
1012    o pkg/generic_advdiff:
1013     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
1014      loop range indices for computing vertical advection tendency
1015      and do the calculation in the interior only (no overlap) ;
1016      for now, only implemented for SOM advection (to save CPU time).
1017     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
1018    o exch2 adjoint
1019      First set of changes:
1020      - add exch2 hand-written adjoint templates
1021      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
1022        This will require cleanup in pkg/autodiff/*.F
1023        (changed routines currently kept separate in verif. code/)
1024      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
1025        that used to hide exch2 or cubed-sphere specific code
1026        (commented via 'cph-exch2')
1027    o pkg/seaice
1028      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
1029    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
1030       output of global_ocean.cs32x15.thsice .
1031    
1032    checkpoint59e
1033    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
1034      for B-grid vector (not yet tested) and C-grid vector (<- only used
1035      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
1036    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
1037      (#ifdef ALLOW_SALT_PLUME)
1038    o gather_2d/scatter_2d: removed halo regions
1039    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
1040      scheme and the corresponding test case (under front_relax dir). For now,
1041      only available with Skew-flux form and not yet tested in realistic set-up.
1042      adjoint: store directives updated, but gradient checks deteriorated,
1043      so maybe GM/Redi adjoint is now broken.
1044    o seaice adjoint
1045      * add AREA, HEFF, HSNOW as control variable
1046        (should not change lab_sea results)
1047      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
1048    o pkg/seaice:
1049      * added computation of saltFlux in seaice_growth;
1050        For time being, sea ice salinity is assumed constant
1051        contribution of snow flooding to freshening of sea ice is neglected.
1052        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
1053        defaults to 0.0 in order to maintain backward compatibility.
1054        Typical values for SEAICE_salinity are 4 to 10 g/kg.
1055      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
1056      * added SEAICE_availHeatFrac, which specifies fraction of surface level
1057        heat content used to melt or grow ice
1058      * commented out cap of HICE: it helps keep ice thinner
1059      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
1060      * applied OBCS T/S mask to HEFFM sea ice mask
1061    
1062    checkpoint59d
1063    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
1064     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
1065     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
1066    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
1067     and change default value of parameter "GM_Small_Number";
1068     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
1069       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
1070       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
1071    o pkg/ecco: cost function when applying pkg/smooth to controls
1072    o pkg/ctrl: add forcingPrecond run time parameter
1073    o pkg/seaice:
1074     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
1075     - fix bug in metric terms of u-equation in LSR solver (implicit part),
1076       changes verification/lab_sea
1077     - rearrange implicit part of u-equation in LSR solver to make it easier to
1078       read, understand, and debug. This causes changes at the truncation level.
1079     - fix (serious) bug in the boundary conditions (sign error in the implicit
1080       part) of the LSR solver. Changes all LSR results.
1081     - fixed problem with HSNOW initialization to avoid thick snow when AREA
1082       is initilized with small values - does not change lab_sea results.
1083     - added HsnowFile initialization capability
1084    o pkg/smooth: addition to model/src and pkg/ctrl so allow
1085     initialization of pkg/smooth and application to control vector
1086    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
1087    o dependencies: pkg/profiles requires pkg/cal
1088    o pkg/profiles:
1089     - added option ALLOW_PROFILES_GENERICGRID
1090         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
1091         that interpolation information (grid points and coefficients) is provided
1092         within the netcdf input files.
1093         -> sample matlab scripts can be found in MITgcm_contrib/gael
1094         that allow you to prepare netcdf input files.
1095     - also modified: cleaner include statements, cleaner error print statements,
1096       cleaner stops when error, and more tests of the netcdf input files consistency.
1097    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
1098    o pkg/seaice:
1099     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
1100       requires a new routine: seaice_diagnostics_fill.F
1101     - make sure that seaice does not move if not forced (pressure replacement
1102       method, Hibler and Ip, 1995), changes results
1103     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
1104     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
1105       It is turned off by default (=-1.), because it changes the results.
1106     - make it possible to read AREA from a file, too.
1107    
1108    checkpoint59c
1109    o add S/R and diagnostics for oceanic mixed-layer depth
1110    o move GMRedi call after all vertical mixing schemes (including KPP)
1111    o pkg/thsice:
1112     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
1113      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
1114    o pkg/obcs:
1115     - bug fix for balance code
1116    o pkg/seaice:
1117      - allow values of SEAICE_elasticParm > 1
1118      - add new parameter SEAICE_evpTauRelax as an alternative
1119        to SEAICE_elasticParm
1120      - make lsr boundary conditions free slip (by default), changes result
1121      - add code for no slip boundary conditions for lsr
1122      - set minimum of zeta to zero (and not 4e8) (changes results)
1123      - add a cap on AREA after advecting AREA if seaice_growth is not called
1124    o change calculation of Visbeck K:
1125      - no longer depend on tapering scheme; instead, compute slope (limited
1126        by GM_maxSlope). this is equivalent to what was comuted before with
1127        clipping or linear tappering.
1128      - fix vertical averaging (wrong by 1/2 level)
1129      - leave the old version (but will not be maintained) within
1130        #ifdef OLD_VISBECK_CALC / #endif
1131      - update output of exp. ideal_2D_oce
1132    o change error catch in calc_r_star to improve vectorization
1133    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
1134      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
1135    o adjoint:
1136      Re-organized adjoint checkpointing according to Matt Mazloff
1137      (but with modifs/completions/cleanups)
1138      Storing is now bundled into large arrays to optimized I/O
1139      (and second step in cleanup of the_main_loop)
1140    
1141    checkpoint59b
1142    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
1143      - export/import (between ocean & coupler) fields needed for ocean DIC.
1144    o pkg/seaice:
1145      - get rid of three more exchanges seaice_calc_viscosities (required
1146        different loop boundaries in seaice_lsr and seaice_ocean_stress)
1147      - bug fix in seaice_ocean_stress (update of lab_sea required)
1148      - reduce loop boundaries to necessary minimum also in seaice_evp
1149      - go back to the old way of computing deltaC/Z as the adjoint likes that
1150        better
1151    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
1152      passive tracer to an Age Tracer) + update output.txt
1153    o pkg/exf:
1154      - implement A-grid / C-grid selection for wind-stress input files.
1155      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
1156      for now, in exf_bulk_largeyeager04.F only :
1157      - change implementation for case where windspeed + 2. components wind-stress
1158        are read-in. AND use rhoConstFresh to convert evap.
1159    o pkg/seaice:
1160      - use correct EXCH_UV for wind-forcing (on A-grid).
1161      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
1162        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
1163    o pkg/exf:
1164      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
1165      EXF_INTERPOLATION:
1166      - merge global_with_exf/code version of exf_interp_read.F
1167        to the main code ;
1168      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
1169        reading the file ; Important: This options needs to be defined to recover
1170        previous code.
1171        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
1172      - no longer loose real*8 precision along the way when using exf_iprec=64.
1173    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
1174      - change discretisation of evp-solver in order to avoid another exchange
1175        (changes lab_sea) and clean up a little
1176      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
1177        help the adjoint (this also changes the results slightly)
1178      - add a few "_d 0" where they had been missing in seaice_evp.F
1179      - cleaning up: remove unused seaice_calc_rhs.F
1180    o pkg/exf: some cleaning-up:
1181      - change various "constants" into runtime parameters
1182      - cleaned-up Large&Yeager04 routine which should eventually
1183        replace exf_bulkformulae.F (changed names of S/R and CPP)
1184        and merged various ALLOW_ATM_WIND options
1185     only used with thsice pkg (in thsice_get_exf.F):
1186      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
1187        which are used when useStabilityFct_overIce=TRUE (= the default)
1188      - change default values of ice & snow emissivity and scale downward LW
1189        by ice & snow emissivity.
1190    o pkg/thsice:
1191     fix few little problems, in thsice_calc_thickn.F:
1192      - growth vertically (and not laterally) if iceFrac == iceMaskMax
1193      - melt only laterally if hIce < hThinIce (as the comments say)
1194      and in thsice_extend.F:
1195      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
1196      - start to form ice as soon as the minimum ice-volume is reachable.
1197     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
1198      and cpl_aim+ocn
1199    o pkg/kpp
1200     - move computation of surface related input fields to KPP into a new
1201       subroutine kpp_forcing_surf.F
1202     - remove wrong (within bi,bj loops) EXCH calls.
1203     - little cleaning (add argument myThid in last position, cvs header ...)
1204     - for now, fix conservation problem by exchanging KPPviscAz (may not
1205       be the best fix)
1206    o pkg/seaice
1207     - check for inconsistent evp parameter/cpp-flag combination
1208     - remove leftover errIO flat for obsolete name list error handling
1209    o OpenAD
1210     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
1211    
1212    checkpoint59a
1213    o pkg/seaice: some parameter clarifications and a little bit of clean up
1214    o pkg/thsice: rename run-time parameters:
1215       himin       -> hIceMin
1216       himin0      -> hThinIce
1217       hihig       -> hThickIce
1218       i0          -> i0swFrac
1219       transCoef   -> bMeltCoef
1220       frac_energy -> fracMelting
1221      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
1222       with default values (for now) that do not change the results.
1223      remove old version of thsice vars advection in pkg/seaice.
1224    o in FFIELDS.h:
1225      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
1226      - make pLoad & sIceLoad always available (but still only used if
1227         ATMOSPHERIC_LOADING is #define).
1228    o pkg/kpp: replaced _KPP_RL with _RL
1229    o bug fixes for vertical diffusivity computations when both KPP and
1230        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
1231        are no longer updating the vertical diffusivity array
1232        (passed as argument) but are (re-) setting those arrays.
1233    o pkg/seaice: fix bug in evp solver, while doing that
1234      - change (improve?) discretization of stress computations for both
1235        cgrid-lsr and evp solver
1236      - add a new routine to compute strain rates
1237      - the above changes lab_sea results
1238      - add no slip conditions for evp solver (off by default), lsr-version
1239        may follow
1240      - fix exchange for shear at Z-points (does not change lab_sea)
1241      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
1242        (to force the user to pick a time step since there is not "safe" way
1243        of choosing it)
1244      - add principal stress diagnostics
1245      - rearrange fields for evp a little to avoid having to call a: too many
1246        exchanges and b: exchanges for stress trensor components which we do
1247        not have.
1248      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
1249        of evp, complete rewrite for lsr case (latter is does not yet work
1250        in all cases)
1251    o pkg/kpp: add code to have mixing in shelf ice caverns
1252      - add myThid to all kpp routines (long overdue)
1253    
1254    checkpoint59
1255    o pkg/exf:
1256      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
1257        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
1258      - move exf header files from lower_case.h to UPPER_CASE.h ;
1259        add missing cvs Header & Name
1260      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
1261      - add namelist param. selectStressGridPosition, exf_monFreq
1262      - retire many _CLIM routines, and remove data.exf_clim
1263        + params moved to data.exf
1264        + climsst, climsss now handled by exf_set_gen, i.e.
1265          climss?period=0 refers to constant field,
1266          climss?period=-12 to monthly forcing
1267      - split up namelists in data.exf
1268    o pkg/seaice:
1269      - remove seaice_exch and seaice_exch_uv
1270      - remove superfluous exchange of theta
1271      - add myThid to seaice_budget_ocean/ice
1272      - add new interface for atmospheric wind forcing (C-grid only)
1273        + new routine
1274        + two new field (taux, tauy for stress over ice)
1275        + removed one global field (DAIRN) for C-grid case only
1276    o pkg/thsise
1277      - 2nd set of modifs for thsice adjoint in conjunction with exf
1278    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
1279    
1280    checkpoint58y_post
1281    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
1282      vertical diffusivity, similar to that in MOM4; turned on using
1283      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
1284      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
1285    o Added capability for 3D specification of background vertical diffusion
1286      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
1287      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
1288      "data" file that contains the 3D vertical diffusivity coefficients.
1289    o ice dynamics (pkg/seaice) with thsice thermodynamics:
1290      - add code within pkg thsice to advect & diffuse sea-ice fields
1291      similar to (and will replace) what has been added in  seaice_advdiff.F,
1292      but: - conserving Mass, Heat & Salt.
1293           - better when using non-linear advection scheme (not yet fully tested)
1294           - can also be used in atmospheric set-up (for now, only the diffusion).
1295    
1296    checkpoint58x_post
1297    o IO option for global-file compact format:
1298      - add options when generating topology (utils/exch2/matlab-topology-generator)
1299      - add I/O capability (pkg/mdsio).
1300      - adapt utils/matlab/rdmds.m to read this format.
1301      for now long-line format not yet supported by pkg/mdsio (& exch2).
1302    o shelfice: add a few diagnostics
1303    
1304    checkpoint58w_post
1305    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
1306      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
1307      (and replace horiVertRatio in NH code).
1308      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
1309                         and tutorial_plume_on_slope (sensitive to truncation)
1310    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
1311      directly to drive seaice model (C-grid only)
1312    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
1313     - reintroduce computation of wind from stress,
1314     - compute tau (in exf_bulkformulae.F) from windstress averaged to
1315       mass points to avoid tau = 0
1316     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
1317    o rdmnc.m: make it work with "global" files created with gluemnc
1318    o rdmnc.m : some improvements in dealing with singleton dimension
1319      (tested on all testreport mnc output files).
1320    o genmake2: disable pkg/profiles if netcdf test fails.
1321    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
1322    o move call to cal_readparms up to make calendar parameters/variable available
1323      to all packages
1324    
1325    checkpoint58v_post
1326    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
1327      useDynP_inEos_Zc tested.
1328    o pkg/exf: changes to properly interpolate/mask/scale initial fields
1329    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
1330      and portions thereof.  See read_cs.txt for description and examples.
1331    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
1332      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
1333      following the great-circle arc between those 2 points.
1334    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
1335      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
1336    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
1337     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
1338     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
1339     - still needs work (not working with some options ; efficiency to improve)
1340       and serious testing.
1341     - use this scheme for temperature & salinity in 2 advection test exp.:
1342       advect_xy & advect_xz, respectively.
1343    
1344    checkpoint58u_post
1345    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
1346    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
1347    o testreport: add option "-skipdir" to skip some test.
1348    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
1349      momentum calculation.
1350    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
1351    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
1352      remove checkpoint.F and the_correction_step.F (no longer used);
1353      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
1354    o add option (linFSConserveTr) to correct for tracer source/sink due to
1355      Linear Free surface
1356    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
1357    o pkg/thsice: fix reading mnc-pickups
1358    
1359    checkpoint58t_post
1360    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
1361    o pkg/mdsio:
1362     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
1363       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
1364       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
1365     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
1366     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
1367       either MDS_READ_FIELD or MDS_WRITE_FIELD )
1368     - new S/R (to replace MDSWRITEMETA), which allows to write more
1369       informations (variable names, time ...) to meta files.
1370     - modify rdmds.m to give back the meta file content.
1371    o pkg/diagnostics: change vertical interpolation to be safer, and more
1372       flexible (define p-levels to interpolate to in data.diagnostics);
1373      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
1374       diagnostic pointer.
1375    o pkg/seaice: more cleaning up of seaice_growth, added many comments
1376    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
1377    o fix multi-category seaice:
1378     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
1379       SEAICE_MULTICATEGORY
1380     - fix short wave heat flux
1381    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
1382       and allow to use EVP solver. Change forward lab_sea: test both EVP
1383       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
1384    o Initial check-in of lab_sea adjoint
1385      (very similar to natl_box_adjoint/code_seaice)
1386      * used C-grid and EVP solver
1387      * used KPP, GM/Redi
1388      * uses inAdExact=.TRUE.
1389      * gradient checks fail for both ADM and TLM
1390        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
1391        f.d. gradients actually seem more problematic than ADM, TLM gradients;
1392        issue is related to forward mismatch between g77 an ifort
1393    o pkg/seaice: overhaul of thermodynamics
1394     - growth.F and groatb.F are replaced by new routine seaice_growth.F
1395     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
1396     - move a few global fields out of SEAICE.h into seaice_growth.F and
1397       make them 2D (FICE/QNETO/ ...)
1398     - remove FO (it is the same as QNETO)
1399     - introduce a few local fields to avoid modifying external fields such
1400       as atemp, etc.
1401    
1402    checkpoint58s_post
1403    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
1404      changed exf_set_gen.F so that
1405        genperiod=0 means input file is one time-constant field and
1406        genperiod=-12 means input file contains 12 monthly means
1407    o CG2D: use pre-computed solver main-diagonal (stored in common block);
1408      this affects truncation error ; generate new output file for exp. which
1409      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
1410        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
1411        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
1412        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
1413        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
1414        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
1415    o start implementation of deep-atmosphere and anelastic formulation
1416    o verification: remove 2nd copy of input files and use script "prepare_run"
1417      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
1418    o mom_common/vecinv/fluxform: fix a few initialisation isssues
1419    o profiles: fix for multithreaded case
1420    
1421    o diagnostics: rename few diags:
1422      s/'PRESSURE'/'RCENTER '/g
1423      s/'TICE    '/'oceFreez'/g
1424      s/'TAUX    '/'oceTAUX '/g
1425      s/'TAUY    '/'oceTAUY '/g
1426      s/'SWFLUX  '/'oceQsw  '/g
1427      s/DIFx/DFxE/g
1428      s/DIFy/DFyE/g
1429      and add few ocean-forcing diagnostics:
1430      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
1431    o modifications to pkg/seaice/growth.F and budget.F, which change results of
1432      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
1433      as actual snow thickness.  It now refers everywhere to effective snow
1434      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
1435    
1436    checkpoint58r_post
1437    o modifications to pkg/seaice/growth.F, which change results of
1438      lab_sea experiment: fixes pertain to melting snow over open water, to
1439      masking EVAP under sea ice, and to using the correct AREA variable for
1440      computations of EVAP, PRECIP, HSNOW, and GHEFF
1441    o add ability to read bathy, salt, and theta using MNC (off by def)
1442    o add flooding algorithm and advection of HSNOW for pkg/seaice;
1443      both are turned off by default and do no change any results
1444    o seaice advection with pkg/thsice: a step toward the use of non-linear
1445      advection scheme, but #ifdef or commented out for now (requires more EXCH).
1446    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
1447      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
1448      in natl_box (affects results @ truncation level: update output.txt)
1449    o multi-threading and IO:
1450      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
1451      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
1452        (needed to work with SingleCpuIO): tested in all verif. exp.
1453    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
1454      affects the results (but none of the verification test uses this scheme).
1455    o Adding some pkg/diagnostics capability to pkg/seaice
1456      (will certainly be subject to changes)
1457    o ctrl: adding new control variables:
1458      lwflux, lwdown, evap, snowprecip, apressure, runoff
1459    
1460    checkpoint58q_post
1461    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
1462      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
1463      high_res_cube configuration by 4% on Columbia.
1464    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
1465      add (in global_with_exf/code) a version of EXF_INTERP_READ without
1466      dynamical allocation (seems to work in multi-threaded).
1467    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
1468      single CPU io) so that TAF does not have to see EESUPPORT.h
1469    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
1470    
1471    checkpoint58p_post
1472    o obcs: stop if obcs is used with useCDscheme = .true.
1473    o shelfice:
1474     - fix a sign error so that no slip at shelfice interface works
1475     - remove stop for combination non-hydrostatic code and shelfice. That does
1476       not mean, that the results are correct, but at least they are numerically
1477       stable
1478    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
1479    o added adjoint exch routined for all exch*3d* routines
1480      and updated flow directives
1481    
1482    checkpoint58o_post
1483    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
1484      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
1485    o change controling S/R for writing pickup file (new S/R do_write_pickup)
1486      and clean-up reading/writing of pickup files.
1487    o fix local version of read/write pickup (NH part) in rotating_tank/code
1488    o simplify EXCH interface:
1489     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
1490     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
1491    o added the regrid package
1492    o shelfice:
1493     - add a simple boundary layer scheme to reduce noise
1494     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
1495    
1496    checkpoint58n_post
1497    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
1498       local variable (not in common block).
1499    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
1500      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
1501      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
1502        to work with SingleCpuIO.
1503    o add "_d 0" to real constant of pkg/cfc subroutines ;
1504       update exp. cfc_exemple & tutorial_cfc_offline output files.
1505    o multi-threading and IO:
1506      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
1507        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
1508      - barrier before and after reading.
1509      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
1510      - avoid using MDS_WRITELOCAL for LAND pkg output.
1511      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
1512        common-block variables ; Allows multi-threading with master-thread IO.
1513    o change default MAX_NO_THREADS from 32 to 4 ;
1514      and stop cleanly when MAX_NO_THREADS is too small.
1515    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
1516    
1517    checkpoint58m_post
1518    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1519       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1520    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1521       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1522       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1523    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1524        add MITgcm_tutorials (= code + all the tutorials)
1525    o ecco, option to compute cost for total ssh (mean+anom)
1526    o consistent with addition of ptracer and ssh in pkg/profiles
1527    o profiles: adding ptracer and ssh
1528    o testreport: change multi-test output-file name
1529      (from output.txt.{name} to output.{name}.txt)
1530    o profiles: now ok for mutli-tiles case
1531    o seaice: add 4 parameters for different advection schemes for area,
1532      (effective) seaice thickness, enthalphy, and snow height. Their default
1533      is the standard parameter SEAICEadvScheme
1534    o calc_gw:
1535     - add cosFacU in zonal viscous flux (harmonic.visc.).
1536     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1537       of tutorial_plume_on_slope.
1538    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1539    o calc_gw: true flux-form, account for horizontal grid spacing.
1540      update rotating_tank results, but not plume_on_slope (affected at
1541      truncation level, 11 digits).
1542    
1543    checkpoint58l_post
1544    o calc_gw:
1545     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1546     - remove side-drag for now (need to fix it); update plume_on_slope results.
1547     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1548    o commit code to make SST/SSS weights spatially variable
1549      (based on either variable in-situ or variable initial T/S weights)
1550    o pkg/ecco:
1551      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1552        now based on horizontally varying weights wthetaLev, wsaltLev
1553      * cost_averagesflags now returns year indices in addition to day, month
1554      * sflux balance is performed on annual basis
1555        (sflxumm, sfluxmm2, bal_sfluxmm)
1556      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1557        including separate counting and multipliers
1558    o pkg/rbcs
1559      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1560    
1561    checkpoint58k_post
1562    o testreport:
1563     - always build in dir. "build" (if not there, mkdir build instead of building
1564       & running in input)
1565     - run in dir run (if it exists), in build otherwise.
1566     - call prepare_run (if input/prepare_run exists)
1567     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1568    o pkg/exf modifications to interpolation and rotation routines for more
1569       reasonable treatment of North Pole singularity: for tracers North Pole
1570       value is set to northernmost zonal-mean value, for zonal velocity it is
1571       set to zero, and for meridional velocity it is set to northernmost value.
1572    o pkg/exf/exf_check_range.F
1573     - add tile index to diagnostics and move stop statement to the very
1574       end of the routine.
1575    o pkg/diagnostics: (diagnostics_main_init.F)
1576      define title of isomorphic variables according to the current config.
1577    o pkg/thsice with pkg/seaice dynamics:
1578    - fix domain of computation (interior only, required for exf) and do exchanges
1579    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1580    o towards a standard way of dealing with multi-threading in MONITOR
1581      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1582    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1583       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1584    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1585    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1586    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1587       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1588    o tracer advection:
1589     - clean-up and simplify calc_common_factors.F
1590     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1591       advection subroutine (but still not used within DST advection S/R)
1592    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1593    
1594    checkpoint58j_post
1595    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1596      from file (collects calls previously in FORWARD_STEP)
1597    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1598    o adjoint store dir. adjusted accordingly
1599    o genmake2
1600      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1601    
1602    checkpoint58i_post
1603    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1604      on wind stress (SEAICEstressFactor defaults to 1.)
1605    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1606      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1607    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1608      on CS-grid: no longer loosing mass.
1609    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1610    o pkg/ggl90: fix sloppy output and fix a bug
1611    o pkg/seaice: added SEAICEuseEVPpickup parameter
1612      - Set to false in order to start EVP solver with
1613        non-EVP pickup files when using SEAICEuseEVP
1614      - fix sign error in diffusion in seaice_calc_rhs
1615    
1616    checkpoint58h_post
1617    * Modifications for bottom topography control
1618      o replace hFacC by _hFacC at various places
1619      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1620      o add non-self-adjoint cg2d_nsa
1621      o update autodiff support routines
1622      o re-initialise hfac after ctrl_depth_ini
1623      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1624    * Adding verification for 5x5 box (4-layer) bottom topography control
1625    
1626    checkpoint58g_post
1627    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1628       used for mean seasonal cycle, mean diurnal cycle); add an example
1629       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1630    o pkg/ggl90:
1631      - add parameter (minimum surface kinetic energy)
1632      - fix bug (avoiding division by zero)
1633    o couple pkg/thsice to pkg/seaice:
1634      - modify advection in seaice to accomodate new scalar fields to be advected
1635      - only muliDimAdection scheme work with seaice/thsice
1636      - mapping of thsice-variables to seaice-variables, back and forth
1637      - does not break the verification experiments, but does not give the
1638        desired results either
1639    o pkg/seaice
1640      - make (default) second order advection a bit less confusing?
1641    
1642    checkpoint58f_post
1643    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1644      to pkg/seaice):
1645      - new routines thsice_map_exf and thsice_get_exf provide the interface
1646      - add an additional formal parameter to thsice_solve4temp
1647    o pkg/exf:
1648      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1649      - correct Stefan-Boltzmann constant
1650      - new parameter for longwave surface emittance
1651      - separate some stuff from exf_bulkformulae into new routines  
1652        exf_radiation, exf_wind
1653      - add new parameters and constants: longwave emissivity for ocean, ice
1654        and snow, evaporation parameters over ice
1655      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1656        either wind from stress or stress from wind
1657    o pkg/thSIce:
1658    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1659    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1660       and THSICE_CALC_THICKN
1661    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1662    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1663      to make debugging easier.
1664    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1665    o pkg/bulk_force:
1666      - clean-up comments and parameters ;
1667      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1668    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1669      generate new output for test-experiment: aim.5l_cs.thSI
1670    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1671      testreport accordingly
1672    
1673    checkpoint58e_post
1674    o SEAICE_CGRID adjoint done
1675    o R_STAR adjoint implemented.
1676      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1677      * need to sort out init. of h0facc, etc.
1678    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1679      to be able to use it in pure forward.
1680    
1681    checkpoint58d_post
1682    o upgrade simple test-experiment to tutorial example:
1683     step.1: duplicate the experiment and (step.2) will remove the old copy.
1684      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1685      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1686      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1687      tutorial_global_oce_biogeo    <- copy of dic_example
1688      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1689      tutorial_plume_on_slope       <- copy of plume_on_slope
1690      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1691      tutorial_global_oce_optim     <- empty for now (David ?)
1692      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1693     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1694    o correct a sign problem in cost_scat.F
1695    o obcs and ptracers: fix boundary conditions for advections schemes
1696      with larger stencil
1697    o thsice adjoint: start
1698    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1699      completeness
1700    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1701      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1702    o ptracers adjoint:
1703      * avoid extensive recomputatations
1704      * fix missing re-init. of gptr (missed by TAF)
1705    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1706      me to turn off the excessive output to STDOUT that this package produces
1707    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1708      and add those terms in Vector-Invariant formulation.
1709    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1710      if the control period (xx_hfluxperiod etc) is 0
1711    o in profiles pkg, clean routines and fix details
1712    o in ecco pkg, reading ssh data:
1713      fix problem in case the model does not start at iter0=0
1714    o fix mnc-pickup/restart for ptracers
1715    o new package prifiles:
1716      code to compute profile-based cost by Gael Forget
1717      (modifs in ecco, ctrl, autodiff)
1718    o Benign bug fix in initialization (spotted by M. Mazloff) of
1719      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1720    
1721    checkpoint58c_post
1722    o adjoint: finish NLFS adjoint and provide reference output in
1723      verification/global_ocean.90x40x15/results_ad_nlfs
1724    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1725      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1726      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1727      with SEAICE_CGRID defined.
1728    o move calendarDumps from "data" to "data.cal" and clean-up the code
1729      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1730    o add useEXF & useCAL flags (for now, set in hard-coded way)
1731    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1732      (were missing in NH mode, and wrong in quasihydrostatic mode).
1733      waiting for Chris updated version of calc_gw to add those CALLs.
1734    o fix bug in quasihydrostatic S/R ;
1735      add a test for this option: global_ocean.90x40x15.qshyd
1736    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1737      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1738    o add on/off flag useOffLine for package OFFLINE
1739    o seaice:
1740      - modify advection so that it works also on the C-grid
1741      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1742        problem in multi-tile runs with C-grid
1743      - add flags for clipping ice velocities and/or masking solver forcing
1744      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1745        C-grid solver
1746      - added a few comments to seaice_diffusion.F
1747      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1748        are now exclusive)
1749      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1750        required re-ordering the code a little:
1751       + make DAIRN global variable (defined in SEAICE)
1752       + move computation of the viscosities eta and zeta into a new separate
1753         routine (because I need to recompute them in seaice_ocean_stress.F)
1754    
1755    checkpoint58b_post
1756    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1757      update output.txt of exp. aim.5l_cs.thSI
1758    o various mnc cleanups and improvements:
1759      + shrink lookup tables by factor of ~4
1760      + better error reporting when running out of lookup space
1761      + able to handle longer path/file names (up to 500 chars)
1762    o adjoint:
1763      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1764      - TBD: "hidden" mom_vecinv recomp. in dynamics
1765    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1766     (allow to differentiate between forcing components using new integer flags:
1767      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1768     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1769    o ecco
1770      - enable trend removal from SSH anomaly obs.
1771    o adjoint
1772      - a fix for PmEpR when #undef EXACT_CONSERV
1773      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1774      - try to fix "hidden" recomp. in forward_step for NLFS
1775        (NLFS seems broken sometimes after I checked it in)
1776    o seaice:
1777     - add c-grid version of the dynamic solver:
1778       + three new routines that are the c-grid substitute lsr, dynsolver
1779         and ostres
1780       + put a few fields that were local to dynsolver into global common
1781         blocks, so that I can move the computation of stresses etc into
1782         seaice_lsr (saves coding but may break the adjoint).
1783     - replace more hardwired parameters by runtime parameters
1784     - add ice masks that mask the rhs of the implicit solvers where there
1785       is no ice (commented out in seaice_dynsolver, because i am not sure
1786       if this works properly), eventually this should replace the clipping
1787       of ice velocities in seaice_dynsolver to +/-40cm/s.
1788    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1789      include it only where its needed
1790    o move balancing of fluxes before the call of external_forcing_surf
1791    o seaice:
1792      - correct units of turning angles (now they are really in degrees)
1793      - move computation of GWATX/Y out of main routine into dynsolver
1794      - initialize GWATX/Y in seaice_init
1795    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1796      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1797    o seaice: add runtime flags for turning angles (default to zero)
1798    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1799      and trend from exf forcing and ctrl control adjustments
1800    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1801      (since checkpoint57x_post)
1802    o change the default rotation period to 86164.s = the Earth rotation
1803    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1804      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1805    o seaice advection: add code for choosing between the default (2nd order
1806      central differences) and multiDim advection schemes provided by
1807      pkg/generic_advdiff
1808    o seaice:
1809      - removed all references to SEAICE_GRID.h fields from
1810        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1811        (cubed-sphere configuration will change a little)
1812      - grid computations in seaice_init are obsolete now.
1813      - cleaned up code a little so that is easier to read (hopefully).
1814      - added new (better?) discretizations of default advection and diffusion
1815        (turn on with SEAICEuseFluxForm)
1816      - replace 1 in 3d global fields by kSurface in growth.F
1817      
1818    checkpoint58a_post
1819    o seaice:
1820      - bug fix in advect.F
1821    o shelfice:
1822      - separate shelfice load anomaly from pload (breaks with time
1823        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1824        Its default is 0., but it may be computed more cleverly from (unknown)
1825        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1826        done offline. A good approximation of the pressure load anomaly is
1827        necessary to avoid large initial adjustment processes underneath
1828        deep-reaching shelfice.
1829      - small fix in ISOMIP shelfice_thermodynamics
1830      - add more sophisticated thermodynamics of Hellmer (1989), this is
1831        now the default
1832      - give a few constants more intuitive names
1833    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1834      if bulk formulae are used in long integration (especially EmPmR). Turn
1835      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1836      if balancePrintMean, the imbalance that is substracted is printed to
1837      STDOUT.
1838    o fix bug (typo) in obcs_apply_eta.F
1839    o add a new package shelfice which enables us to model the circulation
1840      underneath shelf-ice with draughts of hundreds of meters.
1841     - works
1842     - to do: + include improved thermodynamics
1843              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1844                instead of new field kTopC
1845              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1846                instead of new field R_shelfIce and new code in ini_depth.F
1847                and ini_mask_etc.F?
1848              + adjust vertical mixing schemes?
1849    o seaice pkg:
1850     - add a cpp-flag to include a simple formula for a salinity dependent
1851       freezing point of sea water at the surface
1852     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1853       meridional stresses are now different (and hopefully correct)
1854    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1855       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1856       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1857    o pkg/diagnostics: add options and parameters for regional-statistics
1858       diagnostics ; define regions by reading a region-mask from a file
1859       (might add other options later)
1860    o pkg/bulk_force:
1861     - add option and parameters to use AIM surface-flux formulae.
1862     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1863       others forcing fields (defined in PARM05, parameter file "data") are loaded
1864       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1865     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1866     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1867     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1868       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1869     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1870    
1871    checkpoint58
1872    o add "--embed-source" option to genmake2 which, when the supporting
1873      tools can be compiled (as determined by genmake2) will turn on the
1874      embed_files package which then embeds the entire MITgcm source code
1875      (*.[fFhc] + Makefile) used for the build within the executable
1876      - requested by CNH but off by default
1877      - adds a paltry <9MB to the mitgcmuv executable in most cases
1878      - only writes the output when useEMBEDSRC in eedata is true
1879    o clean up 3-dim. relaxation codes:
1880      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1881      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1882      * Thanks to Tom Haine for testing!
1883    
1884    checkpoint57z_post
1885    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1886      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1887    o fix the pickup behavior for obcs in combination with ptracers
1888    o fix a bug in ptracers_external_fields_load
1889    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1890      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1891    o transfered surface NH pressure to eta field (if exactConserv).
1892    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1893         and update lab_sea output.txt file.
1894    o completing 3-dim. relaxation code: additional term
1895         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1896      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1897      * At compile time, in "EXF_OPTIONS.h" set
1898          #define  ALLOW_CLIMTEMP_RELAXATION
1899          #define  ALLOW_CLIMSALT_RELAXATION
1900      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1901          tauThetaClimRelax3Dim = 15552000.0,
1902          tauSaltClimRelax3Dim  = 15552000.0,
1903      * 3 cases:
1904          1) Use a constant-in-time 3-dim. field
1905          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1906          3) Real-time relax. to time-evolving prescribed field
1907    o Adding Laplacian-type smoothness constraint on
1908      initial and boundary (forcing) controls (ic, bc)
1909      * enable at compile-time via
1910        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1911      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1912      * Absolute scale somewhat unclear so far
1913      * no area weighting was included since no other cost term does so far
1914    
1915    checkpoint57y_post
1916    First step for a NLFS adjoint
1917    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1918    o new init. routines for calc_r_star, calc_surf_dr
1919    o still need to deal with ini_masks_etc
1920    o testreport seemed happy
1921    checkpoint57y_pre
1922    
1923    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1924    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1925    o add new offset feature to offline pkg (plus minor cleanup)
1926    o cfc fixes for final year of integration
1927    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1928      be in GCHEM_OPTIONS).
1929    
1930    checkpoint57x_post
1931    o fix testreport Pb in multiple test experiment.
1932    o cleanup our namelist syntax in verification:
1933      - make it more F95 standards compliant (some work still needed)
1934      - allows the vast majority of our tests to work with gfortran
1935    o Non-Hydrostatic:
1936     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1937     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1938    o Allow to apply AB on T,S rather than on AB(gT,gS):
1939     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1940     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1941       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1942     - need a "clever" read_pickup to restart from the other AB formulation
1943    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1944    o remove some unused variables (reduces number of compiler warnings)
1945    o adjoint
1946      * Disable useVariableViscosity for adjoint for time being
1947        (there are a number of extensive recomputations)
1948      * Initialize certain variables needed for adjoint
1949    
1950    checkpoint57w_post
1951    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1952                 fix the singleCpuIO RS version of MDSWRITEFIELD
1953       and add a WARNING if using globalFiles=T with multi-processors.
1954    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1955      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1956    o tracer advection scheme:
1957      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1958       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1959       was not very convenient).
1960      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1961       (further tests needed for the implicit DST & Flux-Limiter schemes).
1962    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1963      and sRef for convenience, handy, when you want to initialize
1964      ptracers in a large domain with a constant non-zero value. Also,
1965      untangle ptracers_init.F a little.
1966    
1967    checkpoint57v_post
1968    o change dome exp. to use variable viscosity in side-drag terms.
1969    o remove all the files from the cfc_offline test since they are now
1970      incorporated into tutorial_cfc_offline which has been producing
1971      identical results for a few days of testing
1972    o add new parameter: sideDragFactor to enable half-slip-side BC
1973      and change side-drag S/R to use viscosity from mom_calc_visc
1974      (can switch back by setting sideDragFactor=0.); affects results at
1975      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1976       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1977    o vorticity & strain are now computed without masking, to account for
1978      no-slip-side BC in variable viscosity calculation ; mask is applied
1979      anyway later on, before computing advection/coriolis terms.
1980    o modify exp4 to test new obcs support for reading from external files
1981      and for passive tracers
1982    o fix behavior of ptracers_monitor when monitor output is written to a
1983      netcdf-file; still not independent of monitor.F (writes in the same
1984      file).
1985    o change default value of tRef (put a uniform, meaningful value for ocean
1986      & atmos) and initialize sRef (was missing, as Martin mentioned).
1987    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1988      to be proportional to enstrophy dissipation length.  Thus,
1989       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1990      This is now consistent with Smagorinsky and with the manual.
1991    
1992    checkpoint57u_post
1993    o OBCS and PTRACERS: add open boundary support for passive tracers
1994      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1995        OB-values from file; this is not different from the way theta and salinity
1996        are treated
1997      - however, Orlanski-radiation conditions are not supported, and the model
1998        will stop if you use pTracers and Orlanski at the same time.
1999      - beefed up the rountine obcs_external_fields_load: now only those open
2000        boundary values are overwritten with values from files for which there
2001        are really files, otherwise the OB-fields remain untouched. This makes
2002        it possible to use different OBs at different ends of the domain (as
2003        with EXF)
2004    o reduce number of exch calls in shap_filt (s2).
2005    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
2006      truncation level) 4/5 MLAdjust test results (11&12 digits match).
2007    
2008    checkpoint57t_post
2009    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
2010    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
2011      same truncation, independent of the face number: affects affects several
2012      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
2013    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
2014      note that biharmonic viscosity + no-slip was not tested in any experiment.
2015    o fix bug in non-linear free-surf side-drag ; generate new output for
2016      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
2017    o make mnc honor the writeBinaryPrec flag for most kinds of output
2018    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
2019    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
2020      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
2021    o add brackets in multi-terms sum to get same truncation, independent of
2022      the face number (manage to get exactly same value of gU,gV at the cs-edge)
2023      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
2024    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
2025      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
2026      a maximum grid-scale Reynolds number.  Also, changes all length calculations
2027      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
2028      Suggested values of viscosity parameters found in mom_calc_visc.
2029      Many new viscosity diagnostics available.
2030    
2031    checkpoint57s_post
2032    o Add clearing-house for viscosity calculations, mom_calc_visc and
2033      correct numerous bugs in LeithD and Smagorinsky discretizations.  
2034      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
2035      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
2036      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
2037      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
2038      The Strain-Tension form is now called with useStrainTensonVisc=.true.
2039      ViscAhStrain and viscAhTension are now retired.
2040    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
2041    o In response to JMC's bug report, genmake2 now ignores any soft-links
2042      that it finds in the *current* directory when searching for files.
2043      Soft-links found in any other source directories will still work as
2044      they did before.
2045    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
2046      a C routine to unlimit the stack size
2047    o mnc-ify pkg/aim snapshot vars
2048    o mnc-ify pkg/land as requested by Daniel
2049    o various changes to mnc including:
2050      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
2051      - output can now be grouped so that all files within a group
2052          change the ITER portion of their names in lock-step together
2053      - can now read ("global") PER-FACE (in addition to PER-TILE) files
2054          and works with both EXCH1 and EXCH2 (but needs more testing)
2055      - writing works for all verification test cases w/ g77 on Linux
2056    
2057    checkpoint57r_post
2058    o make MNC variable initialization happen earlier
2059    o add diagnostics for (almost) each term of the momentum Eq.
2060    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
2061    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
2062    o remove MINIMAL_TAVE_OUTPUT option ;
2063      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
2064    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
2065      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
2066    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
2067    o add time-dependent SST, SSS control
2068    o cost terms in ecco/ modularized (new cost_generic.F)
2069    o cost_averages routines are modularized (new cost_averagesgeneric.F)
2070    o new infrastructure for seaice model vs. obs misfits in seaice/
2071      * driver from the_main_loop.F is seaice_cost_driver.F
2072      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
2073      * gradient check in Exp. 6a of natl_box_adjoint/
2074    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
2075      (see README file)
2076    
2077    checkpoint57q_post
2078    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
2079    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
2080      - bug was reported by Jean-Michel and Ian Fenty
2081    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
2082      update exp. cpl_aim+ocn output.
2083    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
2084      Needed for high-res. runs with large global files
2085      to be able to limit tapelev size
2086    o Changed some tests for adjoint:
2087      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
2088      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
2089      * global_ocean.90x40x15/ back to default 3-level checkpointing
2090    o Modifications to enable scripted COMMON to MODULE conversion
2091      * verification/OpenAD/code/ has necessary scripts and description;
2092      * converts, compiles and runs successfully;
2093    
2094    checkpoint57p_post
2095    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
2096    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
2097      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
2098    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
2099    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
2100      (was already the case for dissipation with mom_vecinv,
2101       and also the case for grad.PhiHyd when staggered-timeStep)
2102      This will allow to put dissipation out-off the AB time-stepping.
2103     Unfortunately, affects truncation error. Update output of exp. that "fails"
2104      (cg2d matching number) and leave the others for later: front_relax(10),
2105      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
2106      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
2107    
2108    checkpoint57o_post
2109    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
2110      (2) its ready to be documented during the 20050801 DocFest
2111    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
2112      for ideal_2D_oce and lab_sea on linux_ia32_g77
2113    o set to #undef CTRL_SET_OLD_MAXCVARS_30
2114      in global1x1_tot/code_seaice_adj to access indices 32, 33
2115      (worth another tag)
2116    
2117    checkpoint57n_post
2118    o adding precip control xx_precip 32
2119    o adding swflux control xx_swflux 33
2120    o Replacing 10 forcing penalty cost routines by 1 generic.
2121    o Implementing partitioning in time-mean and variable adjustment
2122      for atmos. state.
2123    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
2124    o in natl_box_adjoint:
2125      * updated exp 1 to 10
2126        (but does not have time-mean vs. variable split results yet)
2127    o updated global1x1/*_seaice_adj/
2128      to incorporate latest changes
2129    o enable useSingleCpuIO for mdsio vector routines
2130      (applies in particular to tapelev I/O)
2131    o removed inefficient K-loop in all active_file*control*.F
2132    
2133    checkpoint57m_post
2134    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
2135      and advect_cs (use EXCH-2 and standard cs-32 grid files).
2136    o pkg/exch2: filling of face-corner halo regions is optional
2137      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
2138    
2139    checkpoint57l_post
2140     tag before updating tutorials (pre-release-2)
2141    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
2142       for output and interpolation of input fields onto model grid)
2143    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
2144       Affects results of exp. rotating_tank ; update output.txt.
2145    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
2146          and taking the square quantity and/or using a fraction-weight field.
2147    o fix aim_diagnostics_init.F mate numbers.
2148    o add mnc output capability to diagnostics/diagstat and update
2149      our cvsignore files for the ACSII output generated
2150    
2151    checkpoint57k_post
2152    o lab_sea now uses diagnostics package and provides a suite of
2153      new EXF diagnostics output.
2154    
2155    checkpoint57j_post
2156    o exf
2157      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
2158        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
2159        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
2160      * extended diagnostics output
2161        - now includes all EXF variables
2162        - hs, hl moved to common block
2163        - separate S/R for diagnostics, called after ctrl vector is added
2164        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
2165        - EXFqnet contains true Qnet (i.e. includes qsw)
2166      * updated verif. lab_sea, global_with_exf
2167      * Rearranging hflux (exf_mapfields -> exf_getforcing)
2168        to ensure that diagnostics sees a true EXFqnet
2169    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
2170    o diagnostics pkg: change pointers so that 1 diagnostic can be used
2171      several times with different frequencies.
2172    o mnc-ify the thsice package as requested by Daniel Enderton
2173      - the monitor--MNC output needs work
2174      - many attributes need to be added (most are currently blank)
2175    o mnc-ify theaim_v23 package as requested by Daniel Enderton
2176      - many attributes need to be added (most are currently blank)
2177    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
2178    o add Sadourny like discretization to the 4th.O vorticity advection scheme
2179    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
2180      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
2181         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
2182    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
2183     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
2184    
2185    checkpoint57i_post
2186    o Diagnostics package was changed: diagnostic allocation is now deactivated
2187      by setting an empty file name in the namelist (used to be by setting 0 frequency)
2188    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
2189      add 1rst Order upwind vertical Shear.
2190    o add a quick fix for A/B checkpointing in OFFLINE mode
2191    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
2192      end-run around the C/Fortran linking horror in eesup/src/timers.F
2193    o added pkg/runclock: allows user to terminate run based on wall clock
2194    o added non-hydrostatic scaling parameter: nh_am2
2195    o pkg/my82: futile attempt to make results compiler-independent by adding
2196      some "_d 0", etc. no effect.
2197    o for mnc output, fill the 'T' coordinate var with myTime and create a
2198      separate 'iter' variable for iteration count
2199    o pkg/diagnostics:
2200      add new capability: output of Global/Regional & per-level statistics ;
2201      tested against monitor output (including land & thSIce) on various exp.
2202    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
2203    
2204    checkpoint57h_done
2205      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
2206      data.diagnostics, data.gchem, data.ptracers) is done.
2207    
2208    o pkg/diagnostics: prepare for Global/Regional statistics.
2209      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
2210    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
2211      and rename it: DIFFERENT_MULTIPLE
2212    
2213    checkpoint57h_post
2214    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
2215    o pkg/diagnostics: change output frequency, now in seconds (instead
2216      of Nb of iterations). This requires to change data.diagnostics.
2217    checkpoint57h_pre
2218    
2219    o in mnc, let the user create the output dir if both mnc_outdir_date
2220      and mnc_outdir_num are false
2221    o add fflags() to pkg/diagnostics which allows one to specify, on a
2222      per-file basis, the file precision [default behavior is unchanged]
2223    o added diagnostics to pkg/kpp, including computation of mixed layer
2224      depth based on a temperature/density criterion
2225    o updated verification/natl_box to test the new pkg/kpp diagnostics
2226    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
2227    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
2228    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
2229      not mnc -- this mistake was found by JMC and is now corrected
2230    
2231    checkpoint57g_post
2232    o add Adams-Bashforth 3rd Order time stepping:
2233      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
2234      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
2235    checkpoint57g_pre
2236    
2237    o make lambda[Theta,Salt]ClimRelax spatially varying
2238      (default remains spatially uniform constant based on tau)
2239    o added new control variables
2240      * init. uVel, vVel, etanN
2241      * lambda[Theta,Salt]ClimRelax
2242    o separate masks used for ctrl_pack/unpack 'from write_grid' output
2243      (suggested by G. Forget)
2244    
2245    checkpoint57f_post
2246    o add parameter "baseTime" = model base time = time at iteration zero
2247      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
2248      account for baseTime shift
2249    o move Coriolis arrays from PARAMS.h to GRID.h
2250    checkpoint57f_pre
2251    
2252    o mnc-ifying the seaice package
2253    o introduced an alternative length scale calculation for use in the limiting
2254      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
2255    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
2256    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
2257      as well as grad(vort3).  Made it compatible with both approximate form
2258      for the cubed sphere and full form of these gradients.  Added flag
2259      useFullLeith to select between approximate and full form.  
2260    o add "d0" in getcon.F to reduce differences between compilers/platforms
2261      update output.txt of exp. fizhi-gridalt-hs
2262    o change port_rand funtion to allow to set the seed.
2263    o fix obscure MNC bug involving conversion between reals and integers
2264      - it caused no problems with certain (eg. gcc, ifc) compilers but the
2265        new version is now more standards-compliant
2266    o adjoint-related modifications
2267      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
2268      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
2269      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
2270    
2271    checkpoint57e_post
2272    o Adding eddy stress controls a la Ferreira et al.
2273    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
2274    
2275    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
2276      update output.txt of exp. fizhi-gridalt-hs
2277    o add more "Z" dimensions and associated coordinate vars to MNC
2278    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
2279    o parameter calendarDumps: when set, approximate months (30-31 days) and years
2280      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
2281      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
2282      months and years.  Requires pkg/cal.
2283    o diagnostics: add pickup functionality
2284      - off by default for backwards compatibility
2285      - current version only uses MDSIO -- MNC will be added
2286    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
2287    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
2288    
2289    checkpoint57d_post
2290    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
2291    o modify verification/ideal_2D_oce so that it tests the creation of mnc
2292      output from the diagnostics package
2293    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
2294    o make genmake2 more portable by using ".$FS" instead of ".f" for more
2295      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
2296    o add coordinate variables to the MNC output from the diagnostics package
2297    o change MNC-flags default value: true when useMNC=TRUE
2298    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
2299      the ability (off by default) to read the grid information using MNC
2300    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
2301    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
2302    o do snap-shot diagnostics at the middle of the time-interval (instead of
2303      at the end).
2304    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
2305      new test for AIM with thSIce + slab-ocean
2306    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
2307    o move state variable diagnostics to the beginning of the time step ;
2308      (note: still needs some work specially for snap-shot diagnostics)
2309      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
2310    
2311    checkpoint57c_post
2312    o Change testing option (-ieee) to get closer agreement between g77 & ifort
2313    o generate new output.txt files on faulks with g77 & the new -ieee option
2314    checkpoint57c_pre
2315    
2316    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
2317      update output.txt of exp. global_ocean.90x40x15
2318    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
2319      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
2320    o add saltFlux(+File) forcing capability with periodicExternalForcing
2321    o allow to use pkg diagnostics for GM-Redi & ThSIce output
2322    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
2323    o improvements for the MNC output from DIAGNOSTICS:
2324      - correct handling of the unlimitied dimension
2325      - all dims now have associated coordinate variables
2326      - variables located at U, V, and Corner ("Z") points are now written
2327        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
2328        *all* data points are output
2329    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
2330    o added pkg/seaice/seaice_monitor.F
2331    o mdsio_readfield.F can now read files visible only to master MPI process.
2332    o pkg/seaice: some test code for ice-modified ocean stress
2333    o exf_getffields interpolation defaults to bilinear for all scalar forcing
2334      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
2335      spurious negative numbers for precipitation and humidity.  Will cause
2336      some small numerical differences for integrations using pkg/exf/exf_interp.F.
2337    o pkg/ctrl/
2338      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
2339        May be enabled via doPackDiag
2340      *  introduce z-scaling of
2341         + gradient (doZscalePack) and
2342         + control (doZscaleUnpack)
2343    o pkg/mdsio/
2344      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
2345      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
2346    
2347    checkpoint57b_post
2348    o simplify options in diagnostics_fill arguments (remove weird combinations)
2349    o fix MNC coordinate variables so that they now contain per-face index
2350      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
2351      general, EXCH2 grids are only aligned to a "local" coordinate system
2352    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
2353    o Implement instantaneous output within pkg diagnostics:
2354      setting a negative frequency in data.diagnostics produces
2355     "snap-shot" output (as opposed to time-average if freq > 0)
2356    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
2357      NOTE: change ptracer diagnostics name: use 2 characters to work with
2358            more than 9 tracers. Add also diagnostics of advect & diffus flux.
2359    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
2360      becomes the coordinate variable for the 'T' dimension
2361    o add CF-style coordinate variables to MNC
2362      - just a first cut:  numbers are meaningless on the cubesphere and
2363        missing along the T axis but otherwise it works!
2364    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
2365    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
2366    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
2367      this is based directly on what the model compute, so that the content of
2368      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
2369    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
2370    o clean up build options files for SunOS, in particular
2371      - remove -traditional from xmakedepend
2372      - change -xarch=v9 to -xarch=native for f77
2373      - restore use of make (not gmake)
2374      - add CC=gcc if using g77
2375    o changes per discussion of AM, JMC, & EH3 today:
2376      - move redundant "grid" variables out of "state" -- in preparation of
2377        creating proper CF-style coordinate variables and in recognition
2378        that any/all grid variables can be easily copied (eg. w/NCO) from
2379        the grid files into any of the other NetCDF files
2380      - *always* output grid variables with MDSIO (this will eventually be
2381        changed)
2382      - output MNC grid file if useMNC is true
2383    o every instance of _END_MASTER() has been found and replaced with
2384      _END_MASTER( myThid ) in order to satisfy certain picky Sun
2385      preprocessors
2386    o re-arrange diagnostics pkg initialisation:
2387     - allow each package to extend the available diagnostics list
2388     - add some checking and fix small problems (multi-threaded, ...)
2389     - new S/R diagnostics_fill (replace fill_diagnostics):
2390       look through the short list of active diag. (instead of the long list)
2391       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
2392    
2393    checkpoint57a_post
2394    o this set of changes restores TAMC compatibility
2395      tested for global_ocean.90x40x15 adjoint on trough
2396      (what a pain)
2397    
2398    checkpoint57a_pre
2399    o some modifs in tools/build_options for sunos
2400    o call ctrl_pack for ctrl at end for optimcycle=0
2401    
2402    checkpoint57
2403    o add horizontal bi-harmonic viscosity for vertical velocity
2404      - new parameter viscA4W (defaults to viscA4)
2405      - affects only non-hydrostatic code
2406      - to be done: no-slip lateral boundary conditions
2407    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
2408    o implement Implicit Vertical advection for pTracers
2409    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
2410      (implemented also for implicit vertical diffusion & advection)
2411    o OBCS: extend application of tracer open boundary conditions
2412      to a strip beyond the boundary of width Olx/Oly
2413    o add call monitor to TAF set of required calls (flow directives)
2414      and include in natl_box_adjoint
2415    o untangle a few ifdefs related to cost, ctrl, autodiff
2416      untangel a few ALLOW_ECCO_OPTIMIZATION
2417    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
2418      (theta2, salt2 in ecco_cost_weights)
2419    
2420    checkpoint56c_post
2421    o OBCS as control variables
2422      - update ctrl_ad_diff.list, obcs_ad_diff.list
2423      - remove balance of obcs controls from default
2424      - fix index bug nobcs in ctrl_init
2425      - fix dummy fields filen in ctrl_pack
2426      - add dummy weights for obcs
2427    o lsopt: comment out fort.94 output
2428    o optim:
2429      - remove unnecessary header files
2430      - adjusted namelists
2431      - add xerbla.F to Makefile
2432    o exf:
2433      - multiple modifications of exf_check_range
2434      - unit change in exf_init_runoff from [m/year] to [m/s]
2435    o mdsio:
2436      - i/o-vector change debugLevel from debLevA to debLevB
2437    
2438    checkpoint56b_post
2439    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
2440      is called from DO_THE_MODEL_IO
2441      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
2442      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
2443      - clean up PTRACERS_WRITE_TIMEAVE a little
2444    o add another verification experiment that tests both the cfc-pkg and
2445      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
2446      reactive tendencies treated inline with regular timestepping
2447    o testreport previously did a lousy job of comparing small numbers, so
2448      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
2449      implemented in the little c-progam tmp_cmpnum.c which is embedded in
2450      testreport.
2451    o ptracers_monitor: bug fix for MPI
2452    
2453    checkpoint56a_post
2454    o GCHEM: finish reorganizating the package
2455      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
2456        (introduces another 3D-array for each passive tracer, but only if
2457        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
2458        gchemTendency is not needed because the timestep is done separately)
2459      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
2460      - GCHEM is now---more or less cleanly---separate from PTRACERS
2461      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
2462        so clear to me how that should be done in a general way.
2463    o CFC: improve formatting of output in CFC_ATMOS
2464    o PTRACERS:
2465      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
2466        that ALL experiments with ptracers enable can be checked. This makes
2467        GCHEM_MONITOR obsolete.
2468      - include a runtime parameter PTRACERS_monitorFreq that defaults to
2469        monitorFreq
2470      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
2471    o add PTRACERS (PTR0[1-5]) to testreport output
2472    o exf_check_range:
2473      * default changed to .TRUE.
2474      * will check values for niter0 if debLevA, every timestep if debLevB
2475      * STOP in exf_check_range if 'out of range'
2476      * range chosen generous to allow for potential extema
2477      TBD: a version with stricter range
2478           permitted range would be runtime parameters
2479    o GMredi:
2480      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
2481      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
2482      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
2483    o GCHEM:
2484      - move call to GCHEM_FORCING_SEP, so that it is now called before
2485        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
2486      - introduced a useGCHEM runtime flag and applied it everywhere.
2487      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
2488        this flag is now only visible within GCHEM-pkg routines.
2489      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
2490        be replaced by a 3D array that is computed before thermodynamics; for
2491        this, the tracer ID iTracer had to be included into the parameter list
2492        of ptracers_forcing
2493      - set up forward_step to call gchem_forcing, that will replace
2494        gchem_forcing_int in ptracers_forcing
2495      - cleaning up
2496    o small cleaning of exch2: remove files that are also in eesupp/src
2497    
2498    checkpoint56
2499    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
2500    o mnc: cleanup "full" files--fixes out-of-memory problem
2501    o ECCO-GODAE
2502      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
2503      * fully merged and updated from SIO code
2504        windstress sign change affects
2505        - exf_inscal_[u/v]stress
2506        - sign of xx_tau[u/v] adjustments
2507        - signs in cost_scat
2508      * ctrl_get_gen: avoid update of tau[u/v] for first few days
2509      * natl_box_adjoint updated and compressed
2510      * 2-level checkpoint switch added
2511        (tested in EXP. 1 of natl_box_adjoint)
2512      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
2513    o SVD
2514      * first complete, non-hacked version for SVD calculations
2515      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
2516        performed via direct access files admtlm_vector.it????
2517        (via ctrl_[un]pack)
2518      * optimcycle is used for ARPACK iteration counter
2519        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
2520      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
2521        and add linear transforms where necessary
2522      * controls are initial/final SST, SSS (can be extended; need to check
2523        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
2524    o mdsio: filename info to both stderr, stdout
2525    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
2526      from sign change
2527    
2528    checkpoint55j_post
2529    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
2530      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2531    o add consistent build directories and .cvsignore files to verification
2532    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
2533    o make all subroutines 30 or less characters in length for certain older
2534      compilers to work (a thorough search only turns up two routines in
2535      pkg/ptracers)
2536    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
2537      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2538    
2539    checkpoint55i_post
2540    o change arrays for total vertical diffusivity (2.D if explicit,
2541      3.D if implicit) ; each ptracer uses its own background value.
2542    o added mnc/NetCDF output capability to ocn_compon_interf
2543      - added bits to verification/cpl_aim+ocn so that it can run on
2544        ITRDA and other clusters without the mpirun "-wd" option
2545    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
2546      configuration
2547    o give MNC the ability to create additional files rather than
2548      exceeding a specified file size limit "MNC_MAX_FILESIZE"
2549      - the default is just less than 2GB which is a practical limit
2550        on many systems
2551    o Compute the non-local term using either KPP vertical diffusivity (=default)
2552       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
2553    
2554    checkpoint55h_post
2555    o add verification test "vermix"
2556    o remove all the *_ioinc flags and replace with the single global
2557      outputTypesInclusive flag
2558    o allow to set a vertical profile of vertical diffusivity for T & S
2559    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
2560    o useMNC moved from data.mnc to data.pkg
2561    
2562    checkpoint55g_post
2563    o Renaming carbon AD experiments to comply with testreport conventions
2564    o Updating adjoint of Held-Suarez hs94.1x64x5
2565    o Fixing directives for non-ECCO forward_step, after ECCO directives
2566      have been fixed to avoid recomp. of do_oceanic_phys
2567      Works well for global_ocean.90x40x15,
2568      but recomp. issue remains for carbon
2569    o Updating adjoint output for natl_box_adjoint after
2570      pkg/ecco has been modified (see taga c55d_post)
2571    
2572    checkpoint55f_post
2573    o rename to timeave_init_fixed
2574    
2575    checkpoint55e_post
2576    o some delicate re-shuffle of store directives to avoid one
2577      extra call of do_oceanic_physics
2578      affects ecco_the_main_loop.F, do_oceanic_physics.F
2579      checkpoint_lev1_directives.h
2580    o NB: this may break global_ocean adjoint temporarily,
2581      but it is clear how to fix it. Will do later, need this now.
2582    
2583    checkpoint55d_post
2584    o ECCO specific cost function terms (up-to-date with 1x1 runs)
2585    o ecco_cost_weights is modified to 1x1 runs
2586    o modifs to allow observations to be read in as
2587      single file or yearly files
2588    o enable to read exf forcing fields as either
2589      single file or yearly files (flag useExfYearlyFields)
2590    checkpoint55d_pre
2591    
2592    o switch between 2-level and 3-level checkpointing
2593    o add ability of MNC to write local and "partial" (eg. 2D slices where
2594      the full 3D field is never actually stored) arrays to NetCDF files
2595      with the correct (that is, the complete multi-dimensional) set of
2596      array indicies
2597      - used in mom_vecinv() to write the diagFreq output
2598      - tested (demonstrated) in verification/aim.5l_cs
2599    o further mnc-ification
2600      - add verification/lab_sea to the list with mnc setups
2601      - fix undefined mnc v-names in cd_code
2602      - add kpp to mnc output (both snapshot and timeave)
2603    o non-hydrostatic code
2604      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
2605        in calc_gw.F
2606      - defaults to viscAh
2607      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
2608        friction or Leith) in non-hydrostatic mode, as long as there is
2609        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
2610    o pkg/cost
2611      extend simple cost functions to treat time mean quantities
2612      (T,U,V) via cost_accumulate_state from cost_tile
2613    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
2614        be 2 times larger than the minimum size the advection scheme requires.
2615        now get a perfect conservation of salt in advect_cs test-exp (updated)
2616    o GGL90 (Gaspar's TKE mixed layer)
2617      - add horizontal diffusion of TKE, requires exchanges in
2618        do_fields_blocking_exchanges, horizontal diffusivity is zero by
2619        default. In OPA there is no horizontal diffusion of TKE but the
2620        mixing coefficients are computed from a horizontal average of TKE of
2621        6 points or so. I think that diffusion has a little more physical
2622        justification.
2623      - clean up ggl90_calc in the hope of reducing memory usage (this hope
2624        was in vain)
2625      - mask tke-variable in ggl90_init
2626    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
2627    o fix biharmonic diffusion on CS-grid.
2628    o more obcs stuff
2629      - added obcs_external_fields_load as an alternative to the EXF-pkg option
2630        for reading boundary values. This routine is called from
2631        obcs_prescribe_read
2632      - updated obcs_check
2633      - changed sponge layer relaxation parameter units for days to seconds
2634      - turned off sponge layer by default
2635      - changed argument list of OBCS_CALC to myTime+deltaTclock
2636      - fixed about 35 bugs in obcs_external_fields_load
2637    
2638    checkpoint55c_post
2639    o obcs stuff
2640      - new runtime flags useOBCSprescribe, useOBCSbalance
2641      - re-arranged obcs_calc
2642      - moved exf_getobcs to obcs_prescibe_read
2643        obcs_prescibe_read is called after ORLANSKI stuff
2644        and independent of it (executable can contain all).
2645      - updated obcs_check
2646      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
2647        These may be necessary only if tangential velocities are
2648        prescribed at OB, not sure, needs testing.
2649    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
2650      which simplifies the calls and passes the ifc check-bounds test
2651    
2652    checkpoint55b_post
2653    o add a 2D scalar, Z location, exchange_2 routine.
2654    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
2655      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
2656      affects advect_cs results (for the wrong reason): update output.txt
2657    o use a more standard discretization for biharmonic viscosity ;
2658     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
2659      affects results of dome set-up: update output.txt
2660    o fix gad_advection.F (CubedSphere part), back to version 1.23
2661    o fix bug in mom_vi_del2uv.F (CubedSphere part).
2662    
2663    checkpoint55a_post
2664    o merged code to
2665      * prescribe/read time-dependent open boundaries
2666        (works in conjunction with exf, cal)
2667      * sponge layer code for open boundaries
2668      * each boundary N/S/E/W now has its own CPP option
2669        (healthy for the adjoint)
2670    
2671    checkpoint55
2672    o up-to-date adjoint of previous breaks
2673      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
2674      - global_ocean_ebm: adjoint still needs fix (TLM ok)
2675      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
2676      - carbon: * remove tr1-related adjoint verification
2677                * add ptracer as control variable
2678    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
2679      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
2680    
2681    checkpoint54f_post
2682    o in verification/carbin/ remove experiment related to
2683      ALLOW_PASSIVE_TRACER (array tr1 etc)
2684      code_ad/ input_ad/ results_ad
2685    
2686    o add two new packages
2687      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
2688        + subject to optimization (memory)
2689      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
2690        + subject to reordering (many GOTOs in the original code)
2691        + so far opps is called for every (i,j) point, and then operates in
2692          the vertical; one may want to reorder the scheme in order operate in
2693          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
2694          fields)
2695    o overhaul of IO so that we now have flags for MDSIO and/or MNC
2696      - all verification tests compile and run with linux_ia32_g77
2697      - defaults are compatible with current input files--nothing
2698        should change if you were not previously using MNC
2699      - MNC output has been added in numerous places (eg. timeave)
2700        but there are still a few writes not yet do-able with MNC
2701        (this is in progress)
2702      - flags now allow for either/or/both use of MDSIO and MNC and
2703        documentation will soon follow
2704      - numerous small formatting cleanups for ProTeX
2705    o add version info (via BUILD_INFO.h) to MNC and stdout
2706    
2707    checkpoint54e_post
2708    o add two new packages
2709      - pp81 (Packanowski and Philander, 1981), Richardson number and
2710        stratification dependent mixing
2711      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2712      - these scheme operate in a similar manner as KPP (without ghat, of
2713        course), however there is only one diffusivity that is used for both
2714        temperature and salinity (and passive tracers)
2715    o add offline package
2716    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2717      provided by Stephanie Dutkiewicz
2718    o genmake2: add ability to search for C compilers and cleanup test output
2719      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
2720    
2721    checkpoint54d_post
2722    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
2723    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
2724      leading to additional shift by 5 days each year of integration
2725       (i.e. leading to considerable offset over the years)
2726    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
2727    o start with no AB and no initial filtering (staggerTimeStep):
2728      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
2729    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
2730      (external loading & cpl import/export stay in forward_step.F)
2731    o update coupling interface to work with new staggerTimeStep
2732    o change MDSIO ptracers_pickup.
2733    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2734    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2735    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2736    
2737    checkpoint54c_post
2738    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2739      this affects (truncation error) output.txt of test-exp:
2740       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2741    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2742    o change Qnet to always be the net heat flux, (+upward).
2743      affects (truncation error) output of natl_box exp.: updated
2744    o define the max number of passive tracers in PTRACERS_SIZE.h
2745    o start to test mnc routinely in exp0
2746    o add sea-ice loading (sIceLoad) as a new forcing field.
2747    
2748    checkpoint54b_post
2749    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2750       impressive on Altix and Opteron systems)
2751    o diagnostics can now write NetCDF files through the mnc package
2752    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2753    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2754    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2755      affects (truncation error) output of lab_sea & natl_box exp.: updated
2756    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2757    
2758    checkpoint54a_post
2759    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2760    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2761    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2762    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2763      + internal_wave (shift in writing cg2d_ini_res)
2764    checkpoint54a_pre
2765    
2766    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2767      - modified verification/lab_sea and natl_box_adjoint accordingly
2768    
2769    checkpoint54
2770    checkpoint53g_post
2771    o prepare splitting of thermodynamics: store convect.counter in common block
2772    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2773      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2774    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2775    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2776    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2777    o restore adjointability
2778    
2779    checkpoint53f_post
2780    o modifications that affect AIM experiment results (update output.txt):
2781      - no advection of S at top interface Nr (pkg/generic_advdiff)
2782      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2783    o AIM pkg:
2784      - include stability function into surf.Flux derivative relative to Tsurf
2785      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2786    
2787    checkpoint53e_post
2788    o merged cylindrical coord configuration
2789    o added rotating_tank experiment
2790    checkpoint53e_pre
2791    
2792    checkpoint53d_post
2793    o faulks upgraded: re-generate output.txt that have changed:
2794       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2795    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2796    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2797    o added Sadourny discretization of Coriolis
2798      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2799      - re-enabled use of omega3 (useAbsVorticity)
2800    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2801      vector-invariant equations
2802      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2803    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2804      hopefully without new bugs
2805      - still to do: biharmonic friction for non-hydrostatic w
2806    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2807    o regenerated output for global_ocean_ebm (using -ieee)
2808    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2809      of mom_common/
2810      - simple re-arrangement of instructions within computing loop
2811    checkpoint53d_pre
2812    
2813    checkpoint53c_post
2814    o new version of coupler for AIM+thSIce and Ocean models
2815     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2816     - land: change Evaporation of snow
2817     - aim with thSIce: fix bug in snow-precip.
2818    o changes to calc_gw.F
2819     - bug fix for w^2 term near the bottom boundary
2820     - (hopefully) improve the lateral slip boundary condtions for use with
2821        partial/looped cells
2822      - because the bug fix changes two verification experiments anyway (exp5
2823        and plume on slope), change the lateral boundary condition from half slip
2824        to the value of no_slip_sides
2825    o ebm package wasnt quite up to the parallel task. Fixed that.
2826    o Adjoint of EBM package + verification
2827      * TLM OK
2828      * ADM not sufficient accuracy yet (needs further testing)
2829    
2830    checkpoint53b_post
2831    o Commiting new energy balance model to repository
2832      * package is pkg/ebm
2833      * verif. is verification/global_ocean_ebm
2834      * references are in ebm_driver.F
2835    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2836    C        Global thermohaline circulation. Part I:
2837    C        Sensitivity to atmospheric moisture transport.
2838    C        J. Climate 12(1), 71-82
2839    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2840    C        Global thermohaline circulation. Part II:
2841    C        Sensitivity with interactive transport.
2842    C        J. Climate 12(1), 83-91
2843    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2844    C        Destabilization of the thermohaline circulation
2845    C        by atmospheric eddy transports.
2846    C        J. Climate 7(12), 1870-1882
2847    o Will need long integration testing.
2848    checkpoint53b_pre
2849    
2850    o created pkg/mom_common in preparation for variable viscosity code
2851    o renamed and split ini_mnc_io
2852    o pkg/land: only liquid water can diffuse or run-off
2853    o AIM using land: soil wetness availability account for snow
2854    o added printMapIncludesZeros to EEPARMS namelist
2855    
2856    checkpoint53a_post
2857    o restore TAMC compatiility for exf_constants.h
2858      (no usage of _d in .h)
2859    o Additional storing in KPP in an attempt to fix
2860      TAMC problem with adjoint of KPP code.
2861      (no success...)
2862      Identical code works fine with TAF.
2863    o Fixed verification/natl_box_adjoint experiments.
2864      Initial conditions for Experiments 4 and 5 are now
2865      set to "SEAICE_initialHEFF=0", which is more reasonable,
2866      and hence gives results closer to that of Experiment 2.
2867      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2868    
2869    checkpoint53
2870    o stable checkpoint with up to date adjoint
2871      TLM tests only run for 1st grdchk at the moment. Its unclear if
2872      this is a code problem or a problem with resetting code for g_
2873      variables that is being autogenerated wrong.
2874      Otherwise:
2875       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2876       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2877         are both still in chaos following their security messes.
2878    
2879    checkpoint52n_post
2880    o various build (mostly genmake2) changes including:
2881      - ability to build/run more easily within Cygwin and MacOS X
2882      - more complicated Makefiles with a stronger dependence on Gnu Make
2883    o pkg/seaice modifications
2884      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2885        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2886        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2887      - changed proxy for geostrophic velocity and updated
2888        verification/lab_sea/results/* accordingly
2889      - removed ADI dynamic solver from pkg/seaice
2890      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2891        they caused a segmentation fault under certain circumstances
2892      - removed unused field WATR
2893    o bug fix in exf-package:
2894      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2895         now reflect that.
2896    o small fixes in the cal-package:
2897      - set reference date to first of January for the 'model'-calendar
2898      - failing of cal_CheckDate in cal_FullDate now actually results in a
2899        warning
2900    o small modifications in exf-package to increase flexibility:
2901      - change climtempfreeze from a constant to a runtime parameter that
2902        is specified in data.exf_clim (default = -1.9)
2903      - introduce runtime parameter windstressmax (default = 2.0) that is
2904        specified in data.exf
2905    o fix in pkg/thsice:
2906      - update Evap (Tsf changes) to be consistent with Latent heat flux
2907      - maintain snow precipitation unchanged (even if Tsf >=0).
2908     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2909    
2910    checkpoint52m_post
2911    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2912      this does not change any of the results, because myIter=0 in swfrac always
2913      lead to jwtype=2 (the default anyway), but the call makes little sense
2914      as a default
2915    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2916    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2917      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2918    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2919    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2920    o extending useSingleCpuIO option to work with new exch2 I/O format
2921      - old-style, missing-tile I/O is still accessible by defining CPP
2922        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2923    o monitor package can write to NetCDF files and/or STDOUT
2924    o fix re-definition bug in MNC_GRID_INIT_ALL()
2925    o doc/api_reference added
2926      - a framework for building an API Reference Manual using all
2927        the "protex" comments embedded in the code
2928      - see pkg/generic_advdiff, pkg/mnc for examples
2929    o MNC:
2930      - make myThid the last argument for all subroutines
2931      - new default for the grid files: NO halos
2932      - add useMNC and other run-time flags
2933      - separate per-file-group handling of the unlimited dimension
2934      - early initialization of MNC w/ flags read at the eeboot stage
2935        and lookup tables set in initialize_fixed
2936      - write all MNC output to a freshly-created directory
2937    o thermodynamics sea-ice (thsice) is now tested with testreport.
2938    o test exp. advect_cs: use the standard cs32 grid ; update output.
2939    o Added functionality to grdchk:
2940      pick global i,j,k position (or nearest wet) where to perform check.
2941    
2942    checkpoint52l_post
2943    o new land formulation:
2944      a) use ground enthalpy as prognostic variable to ensure exact
2945         energy conservation.
2946      b) account for water temperature and for latent heat of freezing
2947         in all processes (rain, run-off, ground storage)
2948      c) compute surface and ground temperature implicitly.
2949    o aim_v23 modification for new land model:
2950      a) Treat separately land / ocean / sea-ice surface fluxes
2951         to allow implicit computation of land & sea-ice surface temp.
2952      b) add snow precipitation.
2953    checkpoint52l_pre
2954    
2955    o fix problem (when 1 tile is empty) in min/max monitor.
2956    o fix bug in timeAve (u,vZetatave in common block)
2957    o no restoring terms under ice for pkg/seaice
2958    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2959    o bug fix for pkg/seaice pickups
2960    o change MNC call locations and add coordinate attributes
2961    o mask vorticity at the corner ; affects global_ocean.cs output
2962    o fix ini_curvilinear_grid ; test CS experiments with mpi
2963    o aim.5l_cs: modify sea-ice fraction input file ; update output
2964    o exf: Adding simple range check routine for exf fields after read
2965    
2966    checkpoint52k_post
2967    o removed top-level directory "diags"
2968      - we migrated these functions to pkg/timeave a long time ago
2969    o fixed bug introduced in pkg/monitor
2970    o accuracy ctrlprec = 32 insuffient for gradient checks using
2971      averaged fields (I/O via cost_averages)
2972      -> use ctrl.h in active_file*.F to control I/O precision.
2973    o paramter list of CALL ADTHE_MAIN_LOOP
2974    o added initial do_the_model_io to ecco
2975    o set all ...Freq to zero after cost_final
2976      taveFreq, dumpFreq, pChkptFreq
2977    o MAIN and ECCO differentiability restored
2978    
2979    checkpoint52j_post
2980    o fix nchklev in tamc.h for global_ocean...
2981    o Bringing flow and store directives up-to-date
2982    o Really weird thing!
2983      call do_the_model_io from the_main_loop with parameters
2984      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2985      TAF places a faulty re-call of initialise_varia
2986      after cost_final call which should not be there!
2987    checkpoint52j_pre
2988    
2989    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2990      error messages
2991    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2992    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2993      debug output
2994    o modfied mdsio_writefield.F to handle non-global files under exch2
2995    o update AIM Cubed-Sphere exp (aim.5l_cs):
2996      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2997    o update AIM Equatorial Channel exp:
2998      use standard aim_v23 pkg and change the SST fields to be more realistic.
2999    o globalFile now works with exch2
3000    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
3001      mon_vort3.F to make exch2 friendly with >1 tile per cube face
3002    o limit timeave output for hi-res integrations
3003    
3004    checkpoint52i_post
3005    o removed CPP_EEOPTIONS.h from verification/*/code
3006    o updated the tiling for global_ocean_pressure
3007    checkpoint52i_pre
3008    
3009    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
3010      the old pkg/aim).
3011    
3012    checkpoint52h_pre
3013    o shortened offending lines in exch2_send_rx?.template
3014    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
3015    o genmake2: add build & execute test for NetCDF code
3016    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
3017      old grid files, moved CPP_EEMACROS.h to pkg/exch2
3018    o added useSingleCPUIO flag to monitor.F and mon_out.F
3019    o added temporary hack for sea-ice dynamics on the cube:
3020      metric terms are ignored and it is assumed that
3021      there is no sea-ice on cube faces 1, 2, 4, and 5.
3022    
3023    checkpoint52f_post
3024    o added exch2 cube routines to pkg/exch2
3025    o modified hs94.cs-32x32x5 to use it
3026    o added new grid files to hs94.cs-32x32x5
3027    checkpoint52f_pre
3028    
3029    checkpoint52e_post
3030    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
3031      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
3032    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
3033      to work with implicit vertical advection and AB ;
3034    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
3035    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
3036     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
3037    checkpoint52e_pre
3038    
3039    o fix bug in impldiff when Nr=1 or Nr=2.
3040    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
3041    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
3042    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
3043      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
3044    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
3045    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
3046    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
3047    
3048    checkpoint52d_post
3049    o re-tiled many expts to allow comparison in multi-processor mode
3050      - updated output accordingly
3051      - changed hs94.128x64x5 to use intial T from file rather than use the
3052        random number generator
3053    o add infrastructure in model routines for fizhi and gridalt packages
3054    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
3055    o changes to permit hi-res, cubed-sphere, configuration
3056      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
3057      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
3058      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
3059        of surface winds for the cube
3060      (A verification experiment, based on global_ocean.cs32x15, but with
3061       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
3062       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
3063       complete with example surface forcing files and matlab scripts to look
3064       at the output and compare it with that of global_ocean.cs32x15.)
3065    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
3066       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
3067       to conform to the common rule.
3068    o check-in the first version of the coupler + interfaces for multi-components
3069       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
3070       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
3071       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
3072       - ocean and atmos. share the same horizontal grid (no interpolation).
3073       - exchanges between component and coupler is done in forward_step
3074    o new verification experiment, cpl_aim+ocn:
3075       coupled ocean - AIM atmosphere on cs32 grid.
3076    
3077    checkpoint52d_pre
3078    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
3079    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
3080    
3081    checkpoint52c_post
3082    o Fixing OPTIONS files for use of exf:
3083      - ALLOW_ECCO not needed
3084      - ECCO_CPPOPTIONS.h should not be included from
3085        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
3086        as has been the case in the past
3087      - All cal/exf related options are currently set in
3088        single header file. Should remain so until we
3089        agree on a consistent new policy.
3090    o Removed all CPP options for cal package.
3091      cal has no more CPP options.
3092    o modified STOREs in GAD_ADVECTION
3093    o corrected key comp. for passkey
3094    
3095    checkpoint52b_post
3096    o new version: "thsice" of thermodynamic sea-ice pkg:
3097     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
3098     - modify fluxes but do not change theta directly;
3099     - light cleaning of bulk_force pkg (still needed with thsice).
3100     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
3101       + output_thsice.txt to test thsice & bulk_force pkgs.
3102    o put back grid & coriolis monitor output.
3103    checkpoint52b_pre
3104    
3105    o call "do_the_model_io" at the beginning (=> dump initial state)
3106    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
3107    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
3108      (need info on NUMBER_OF_PTRACERS)
3109    o missing PTRACERS headers in some routines
3110    o default tamc.h in pkg/autodiff supposed to crash
3111      to ensure proper customization
3112    
3113    checkpoint52a_post
3114    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
3115      - moved surfaceTendencyTice from pkg/seaice to main code
3116      - subroutine FREEZE_SURFACE now limits only surface temperature
3117        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
3118        => new output.txt for global_ocean.cs32x15 & global_with_exf
3119      - keep the old version of FREEZE for backward compatibility;
3120        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
3121      - corresponding modifs for TAF directives
3122    o added surface flux output variables to TIMEAVE_STATVARS
3123    o time-averaged output for pkg/ptracers
3124    o fix problem with ECCO-related divided adjoint
3125      snapshot file was missing some ad-variables,
3126      but no warning issued by TAF
3127    
3128    checkpoint52a_pre
3129    o some bug fixes for #undef REAL4_IS_SLOW
3130    
3131    checkpoint52 = ecco_c52_e35
3132    o after testing adjoints of checkpoint51u_post
3133    
3134    checkpoint51u_post
3135    o this is the post-merge tag of the ecco-branch
3136      (needs another clean checkout and re-testing)
3137    o various natl_box_adjoint configs and results
3138      but no input fields
3139    o obcs adjoint not yet merged!
3140    o adding ECCO global 1x1 and 2x2 degree configs
3141    o updated/extended some store directives for seaice
3142    o pkg/ecco now containes ecco-specific part of cost function
3143    o top level routines the_main_loop, forward_step
3144      supersede those in model/src/
3145      previous input data.cost now in data.ecco
3146      (new namelist ecco_cost_nml)
3147    o in ctrl/ cleaned some cross-dependencies and updated CPP options
3148    
3149    checkpoint51t_post
3150    o this is the pre-merge tag of the ecco-branch
3151    
3152    checkpoint51s_post
3153    o cleanup: removed various obsolete #define-s
3154    o pkg/grdchk
3155      - renamed 'ph-grd 3' to 'grad-res'
3156      - merged from ecco-branch
3157        (remaining bug fixes for obcs gradient checks)
3158      - additional high-precision output for testreport
3159        (grep for 'precision_grdchk_result')
3160    
3161    checkpoint51r_post
3162    o cleaned up or removed CPP_OPTIONS.h files
3163    o updated results for some of the tests to reflect the new
3164      optfiles (-ieee: -O0 instead of -O3)
3165    
3166    checkpoint51q_post
3167    o cd_code:
3168      - moved cd_scheme.F -> cd_code_scheme.F
3169      - separate read_checkpoint from cd_code_ini_vars.F
3170      - separated cd_code part from write_checkpoint
3171      - updated AD_SOURCE, generated .flow
3172      - added CD_CODE_VARS.h to the_main_loop
3173      - Moving cd_code specific store dir.s to pkg/cd_code
3174    o ctrl package totally restructured
3175      - pack/unpack now optional and decoupled from
3176        xx_/adxx_ I/O
3177      - ctrl_pack/unpack cleaned
3178        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
3179      - confined inclusion of AD_CONFIG.h to where necessary.
3180    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
3181    
3182    checkpoint51p_post
3183    o create initial cd_code package
3184      - WARNING: the initialization of fields within packages
3185        is broken because INI_FIELDS (where READ_CHECKPOINT is
3186        called) is called *before* PACKAGES_INIT_VARIABLES.
3187        This seems to be backwards since
3188        1) its important to initially zero the entire field including
3189           the "halo" region
3190        2) zeroing needs to be done *before* reading pickup info
3191           and the pickup call might or might not happen in any
3192           particular run
3193      - this needs an overhaul for R2
3194    o cleanup verification/*/code/GMREDI_OPTIONS.h
3195    o cleanup testreport
3196    
3197    checkpoint51o_post
3198    o bringing AD-related verif's up to date with genmake2
3199      - carbon/
3200      - global_ocean.90x40x15/
3201      - hs.94.1x64x5/
3202      - (front_relax/ )
3203    o (more) consistent directory structure for AD-related verif.'s
3204    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
3205    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
3206    o bug fix in find_alpha.F for MDJWF:
3207      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
3208        change rho -> rho-rhoConst
3209      - replace call find_rho to find_rhonum
3210    o initialisation of rFlx extended to full array (required by TAF)
3211      and shifted to thermodynamics
3212    o removed PTRACERS.h in ptracers routine
3213    o added surfacetendencyPtr to S/R parameter list pracers_forcing
3214    o Correcting initialisations for fVerU, fVerV.
3215    o helping TAF to recognize dependency on kUp for
3216      fVerU, fVerV
3217    o Replacing delZ by delR in pkg/ctrl/
3218    checkpoint51o_pre
3219    
3220    o undid all of cp51 pending some cleanups and discussion
3221    o added the [#include "AD_CONFIG.h"] statement to all files that need
3222       it for adjoint/tl #defines
3223     o re-worked the build logic in genmake2 to support AD_CONFIG.h
3224     o removed tools/genmake since it no longer works
3225    
3226    checkpoint51n_post
3227    o modifications to make FREEZE flux visible to pkg/kpp
3228      - moved surfaceTendencyTice from pkg/seaice to main code
3229      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
3230      - subroutine FREEZE now limits only surface temperature
3231        (this means new output.txt for global_ocean.90x40x15,
3232         global_ocean.cs32x15, and global_with_exf)
3233    o added surface flux output variables to TIMEAVE_STATVARS
3234    
3235    checkpoint51n_pre
3236    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
3237    o added [#include "AD_CONFIG.h"] to all files that use the following
3238      defines:
3239      - ALLOW_ADJOINT_RUN
3240      - ALLOW_TANGENTLINEAR_RUN
3241      - ALLOW_ECCO_OPTIMIZATION
3242    
3243    checkpoint51m_post
3244    o incorporating changes to get TAMC/TAF working in genmake2
3245      - added new TAMC/TAF targets to the Makefile
3246      - various cleanups related to package handling
3247      - these changes should have no impact on the forward model
3248    
3249    checkpoint51l_post
3250    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
3251     - faster algorithm for cal_addtime.F
3252     - higher precision arithmetic, where needed
3253     - pkg/exf *startdate variables changed from calendar date to
3254       model integration time
3255    
3256    checkpoint51l_pre
3257    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
3258    o enable to apply restoring on S & T only in a latitude band.
3259    o update output (external_forcing_surf modif. change truncation errors)
3260       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
3261    
3262    checkpoint51k_post
3263    o change default to: useNHMTerms=.FALSE.
3264     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
3265       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
3266     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
3267        exp1, ideal_2D_oce
3268     - change data file of oceanic exp (leave the results unchanged for now)
3269       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
3270    o set gravitySign automatically according to the vertical coordinate used
3271      (and change sign: back to "logical" value: +1 when R increases downward)
3272    o added an include barrier to the default CPP_OPTIONS.h and
3273      removed the #include "PACKAGES_CONFIG.h" from it
3274    o fix a bug in mom_fluxform (from chk51j_post)
3275    
3276    checkpoint51j_post
3277    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
3278    o adjusted some flow directives (dynamics, thermodynamics)
3279    o added cubed-sphere case to test cost function
3280    o heckpoint_lev?_directives.h now include
3281      pkg-specific directives, whenever those are enabled.
3282    o Moving pkg-specific flow directives to corresponding pkg
3283      Moving pkg-specific differentiation list to corresponding pkg
3284      Moving pkg-specific checkpoint-lev storing to corresponding pkg
3285      ---> conventions are
3286           - pkg_ad.flow
3287           - pkg_ad_diff.list
3288           - pkg_ad_check_lev?_dir.h
3289    
3290    checkpoint51i_post
3291    o merge of the branch-genmake2
3292      - knowingly breaks the older genmake
3293      - automatic generation of all ALLOW_${PKG_NAME} defines
3294      - new testreport supersedes older testscript
3295    o large number of package inclusion and header cleanups
3296    checkpoint51i_pre
3297    
3298    o new output for adjoin of global ocean vector invariant
3299    o fix for checkpoint of thermodynamic seaice and bulk_force
3300    o Steph gchem various cleanups
3301    
3302    checkpoint 51h_pre
3303    o fixed some single quotes
3304    o modify gchem pkg to be more versatile
3305    o modifications to clean up dic pkg
3306    o add pkg/cfc
3307    
3308    checkpoint51g_post
3309    o provide links for ARPACK and ADM*TLM
3310    o start removing verification/vero/
3311    o update AD-related stuff
3312      (in particular some IF-statements in model/src/ routines)
3313    o adding to verification/global_ocean.90x40x15/ adjoint of
3314      vector invariant setup
3315    
3316    checkpoint51f_post
3317    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
3318    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
3319      of tracer Green's fucntions for ocean inversion project.
3320    
3321    checkpoint51f_pre
3322    o Added on-the-fly spatial interpolation capability
3323        "USE_EXF_INTERPOLATION" to pkg/exf.
3324      - This is a temporary Cartesian-grid hack until
3325        the super-duper ESMF coupler becomes available.
3326      - See verification/global_with_exf/README for usage example.
3327      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
3328        flags and modified pkg/seaice accordingly.
3329    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
3330        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
3331        non-local transport term.
3332    
3333    checkpoint51e_post
3334    o pkg/mom_vecinv:
3335      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
3336      - add time-ave diagnostic of vorticity advection.
3337    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
3338    o atmospheric geopotential: - include water vapor effect;
3339                                - use p^kappa in p* scaling.
3340    o land pkg: read initial state from files.
3341    o AIM : add stratospheric drag in the upper level
3342    
3343    checkpoint51d_post
3344    o change function ILNBLNK (=> last non-blank char.) to return zero
3345      (instead of the string length) when the string. char is empty
3346    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
3347    o modif's to restore TAMC compatibility
3348      - avoid "_d" constructs in PARAMETER declarations
3349      - avoid interrupting lines by comment lines
3350    o Use cluster local disks for purely local I/O
3351      vs. globally visible disks needed for ctrl stuff
3352      (merged from ecco-branch)
3353      - new active_file_loc... and mdsio_..._loc routines
3354      - affected packages: autodiff, ctrl, grdchk, mdsio
3355    
3356    checkpoint51c_post
3357    o introducing integer flag debugLevel
3358      - debLevZero: suppress all output
3359      - debLevA: standard
3360      - debLevB: equivalent to current debugMode=.TRUE.
3361    o introducing pathname variable mdsioLocalDir for mdsio
3362      that can be specified at runtime
3363      (relevant for cluster I/O to local disk)
3364    `
3365    >>>checkpoint51b_post
3366    adjoint of ptracers
3367    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
3368    o extended state in checkpoint_lev?, etc.
3369    o alternative ctrl/cost with tr1 or ptracer
3370    o new comlev1_bibj_ptracers
3371    o new ptracers.flow
3372    o made ptracers_forcing same as external_forcing_s
3373    o added verification for adjoint with ptracers
3374      - adm. grdchk fail so far
3375      - tlm. grdchk OK
3376      - checked tapelev/comlev recomputations: OK
3377    <<<checkpoint51b_pre
3378    
3379    checkpoint51a_post
3380    o added code for biogeochemistry package
3381      - new pkgs: dic, gchem
3382      - new subroutine in ptracers
3383    o modify code for biogeo packages
3384      - in model/src and pkg/ptracers
3385    
3386    checkpoint51
3387    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
3388      - autodiff, ctrl, exf, grdchk, seaice
3389      kept separate packages
3390      - cost, ecco, obcs
3391    o updating verification/internal_wave, verification/lab_sea
3392      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
3393    
3394    checkpoint50i_post
3395    o Preparing next differentiable checkpoint and sync
3396      of MAIN vs. ecco-branch
3397      - 1st step: this one is differentiable
3398      - 2nd step: next(! not this) checkpoint will have updated packages
3399                  from ecco-branch)
3400    
3401    checkpoint50h_post
3402    o new package "land": provide surface BC for AIM.
3403    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
3404    o AIM: use true log-P extrapolation for near surface temp (= as in
3405        F.Molteni paper) ; update aim.5l_cs output.
3406    o New variable in PARM03 for more flexible pickups
3407    o somewhat cleaned package initialisation sequence for
3408      ctrl/ cost/ ecco/ in packages_... routines
3409    
3410    checkpoint50g_post
3411    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
3412      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
3413      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
3414        made the default because of faster convergence than ADI
3415    
3416    checkpoint50f_post
3417    o exf totally restructured
3418      - replaced all exf_set_ routines by one generic exf_set_gen.F
3419        and made sure it's still differentiable
3420      - split exf_getffields.F into new exf_bulkformulae.F
3421      - exf_inscal_/exf_outscal_ suffixes consistent with field names
3422      - updated adjoint/makefile and relevant verif. accordingly
3423    
3424    checkpoint50f_pre
3425     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
3426          + change Evap over land. (update aim.5l_cs output)
3427     o added missing .cvsignores and made uniform across expts
3428     o changed configuration of tidal_basin_2d expt
3429     o added pkg/debug functions for tracing code in fatal crashes
3430     o tidied pkg/monitor to use MONITOR_OPTIONS.h
3431     o new fn in pkg/monitor to stop model if solution grows too big
3432     o removed lots of single quotes from comments
3433    
3434    checkpoint50e_post
3435    o make KPP work with PTRACERS
3436     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
3437       nearly a copy of kpp_transport_s
3438     - there is no analogue to SurfaceTendencyS, so I have to use
3439       gPtr(of the surface layer) instead
3440    o add a new platform SunFire+mpi (SunFire 15000) to genmake
3441    checkpoint50e_pre
3442    
3443    checkpoint50d_post
3444    o change kpp output from multiple-record state files to single-record state
3445      files analogous to write_state.F
3446    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
3447      analogous to the cg2d-related output.
3448    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
3449      so that writing to internal file fn (with length 512) fails.
3450    checkpoint50d_pre
3451    
3452    checkpoint50c_post
3453    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
3454    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
3455    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
3456    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
3457    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
3458    
3459    checkpoint50c_pre
3460    Merging from release1_p13:
3461    o bug fix for pkg/seaice dynamic solver
3462    o Added SEAICE_initialHEFF to pkg/seaice
3463    
3464    checkpoint50b_post
3465    o store u*,v* in gU,V instead of in guNm1,gvNm1
3466    o in order to put the momForcing out of the Adams-Bashforth:
3467      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
3468      to timestep.F
3469    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
3470    o re-generate output for highly sensitive test-exp:
3471       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
3472    
3473    checkpoint50b_pre
3474    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
3475    o corrected CPP option mismatch in exf_Bulk... functions for case
3476      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
3477    
3478    checkpoint50a_post
3479    o Bug fix for merging between c50 and KPP.
3480      ikey was passed from thermodynamics to kpp_calc via
3481      common block rather than being recomputed in kpp_calc,
3482      in contradiction with new key itdkey.
3483      New key ikppkey created, and tamc.h headers updated.
3484    
3485    checkpoint50
3486    - 2nd step of merge with ecco-branch:
3487      merge changes in ecco-branch back into main trunk
3488    - bug fix in find_alpha
3489    - more storing in gmredi_calc_tensor.F, kpp_routines.F
3490    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
3491    - merged some sliced AD support routines
3492    
3493    checkpoint49
3494    merged from ecco-branch:
3495    o exf:
3496      - Enable initialisation of forcing fields to constant
3497        (runtime) values.
3498      - in exf_getffields.F
3499        Reduce i-/j-loop to interior domain, discarding overlaps.
3500        That also fixes wrong TAF-key computations for key_1, key_2
3501        with bulf formulae.
3502      - exf_init.F modify #ifdef for exf_init_evap
3503      - exf_getffieldrec.F, ctrl_getrec.F
3504        The following INT-usages are not safe:
3505          fldsecs  = int(fldsecs/fldperiod)*fldperiod
3506          fldcount = int(fldsecs/fldperiod) + 1
3507        and were modified.
3508    o autodiff: checkpoint_lev...
3509      - updated storing for bulk formulae (some arrays were missing)
3510      - added state for seaice package
3511      - synchronized with main branch
3512    o DIVA:
3513      Modif.s in
3514      - the_main_loop.F
3515      - the_model_main.F
3516      and added cost_final_restore.F cost_final_store.F
3517      o With these changes, it is possible to fully separate
3518        the first forward run to compute the cost function (mdthe_main_loop)
3519        and adjoint runs over individual DIVA intervals (adthe_main_loop)
3520        into separate model executions.
3521        This enables better tuning of DIVA to given queue sizes.
3522      o Loss of cost function value in consecutive DIVA runs is
3523        fixed by storing to 'costfinal' file.
3524      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
3525        beginning/end of adjoint integration is accounted for.
3526      The current changes apply to TAF-1.4.26.
3527      TAF has one remaining bug, requiring one manual change
3528      (see MITgcm manual).
3529    o cal: synchronized between MAIN and ecco-branch
3530    
3531    checkpoint48i_post
3532    o Changes to restore differentiability of code w.r.t. previous tag
3533      (mostly adding new routines to make list and replacing
3534      pressure by totPhiHyd).
3535    o Updated and merged grdchk package
3536      - has both ADM and TLM checks
3537      - works for single- and multi-proc.
3538      - output cleaned
3539      - worked successfully for parallel DIVA
3540    o genmake:
3541      - Adding -platform=SP4
3542      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
3543    o Modif. for DIVA:
3544      ctrl_unpack should not be called in intermediate DIVA interval.
3545      (similar thing would apply for active files such as
3546      tbar, sbar, psbar, which should not be reinitialised;
3547      only relevant for ecco-branch)
3548    
3549    checkpoint48h_post
3550    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
3551    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
3552    o Added SEAICE_initialHEFF to pkg/seaice
3553    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
3554    
3555    checkpoint48g_post
3556    --- EOS:
3557    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
3558      store total Potential in totPhyHyd for diagnostics & EOS.
3559    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
3560    --- Pressure/geopotential gradient:
3561    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
3562    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
3563      ( changes results of global_ocean_pressure )
3564    o NLFS + z-coord.: add eta*Rho' contribution.
3565    o accurate phiHyd when using interface-W at the middle between 2 centers
3566     ( changes results of ideal_2D_oce )
3567    o includes r* 2nd term in potential gradient.
3568    
3569    checkpoint48f_post
3570    Merging from release1_p12:
3571    o Modifications for using pkg/exf with pkg/seaice
3572      - improved description of the various forcing configurations
3573      - added basic radiation bulk formulae to pkg/exf
3574      - units/sign fix for evap computation in exf_getffields.F
3575      - updated verification/global_with_exf/results/output.txt
3576    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
3577      (SBO) core products, including oceanic mass, center-of-mass,
3578      angular, and bottom pressure (see pkg/sbo/README.sbo).
3579    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
3580      to avoid negative values in shallow regions.
3581      - updated verification/natl_box/results/output.txt
3582      - updated verification/lab_sea/results/output.txt
3583    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
3584    o Added useSingleCpuIO option (see PARAMS.h).
3585    o Updated useSingleCpuIO option in mdsio_writefield.F to
3586      work with multi-field files, e.g., for single-file pickup.
3587    o pkg/seaice:
3588      - bug fix in growth.F: QNET for no shortwave case
3589      - added HeffFile for specifying initial sea-ice thickness
3590      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
3591    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
3592      kpp_transport_t.F, forward_step.F, and the_main_loop.F
3593    o pkg/seaice:
3594      - adjoint-friendly modifications
3595      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
3596    
3597    checkpoint48e_post
3598  o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)  o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
3599  o dynamics: change definition of computational domain & adapt mom_fluxform  o dynamics: change definition of computational domain & adapt mom_fluxform
3600    accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.    accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
3601  o following exp works with Olx=Oly=2 (and pass through checkbounds option):  o following exp works with Olx=Oly=2 (and pass through checkbounds option):
3602      adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1      adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
3603      exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5      exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
3604      global_ocean.90x40x15 global_with_exf global_ocean_pressure      global_ocean.90x40x15 global_with_exf global_ocean_pressure
3605      inverted_barometer solid-body.cs-32x32x1      inverted_barometer solid-body.cs-32x32x1
3606    (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)    (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)

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