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revision 1.66 by jmc, Tue Mar 5 15:36:06 2002 UTC revision 1.1174 by jmc, Sat Oct 10 17:09:58 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 tutorial_global_oce_optim:
8      now tested with 4 tiles (change data.grdchk and update output_adm.txt)
9      and add SIZE.h_mpi for MPI testing
10    o pkg autodiff
11     - fix bug in autodiff_restore
12     - make genmake2 remove comments and empty lines from ad_input_code.f in
13       order to reduce file size (new script file remove_comments_sed)
14    o allows to specify vertical profile of vertical viscosity (viscArNr)
15    o pkg autodiff
16      autodiff_ini_model_io: comment out writing of grid information to netcdf
17      files, because at this time the grid fields are a bunch of zeros
18      (this is analogous to ini_mnc_vars.F)
19    o pkg seaice/autodiff:
20     left-over from removing the 3-time-level fields:
21     - small rearrangement of common blocks (SEAICE.h)
22     - fix field declaration in order to get meaningful output in
23       adseaice.*.nc (adcommon.h)
24    o pkg obcs:
25     - go through NH code only if nonHydrostatic=T
26     - fix restart for Orlanski (Hydrostatic; still to fix NH+Orlanski restart)
27     - move call to OBCS_CALC before SEAICE_MODEL which needs seaice-obc fields
28       => Update output of experiment seaice_obcs
29     - useOBCSbalance: code is wrong with multi-tile / proc: add a stop.
30     - fix NH+Orlanski restart (add wvel OBC value in pickup file)
31     - fix restart for useOBCSprescribe + useEXF
32    o pkg ctrl
33     - make obcs as control parameter work also with useSingleCPUio
34     - replace a few sny and snx by Ny and Nx to be consistent with
35       ctrl_set_globfld_x/yz.F
36    o pkg seaice
37     - re-introduce global field frWtrAtm for the case of
38       ALLOW_MEAN_SFLUX_COST_CONTRIBUTION defined (SEAICE.h, seaice_growth.F)
39     - catch the case of an empty filename in seaice_cost_init_fixed.F
40    o pkg ecco:
41     - small bug fixes in the_main_loop
42      . fix order of monitor arguments
43      . change SEAICE_MULTILEVEL to SEAICE_MULTICATEGORY
44      . move include DYNVARS.h up outside the ALLOW_AUTODIFF_TAMC block so
45        that ALLOW_ECCO_FORWARD_RUN works with NONLIN_FRSURF
46     - replace cos(yc*deg2rad) by _rA in cost_mean_heat/saltflux.F, fix the
47       imbalance diagnostics for wmean_h/sflux = 0
48     - add actual values to f_obcsn/s/w/e in ecco_cost_final.F
49     - catch the case of empty filenames in ecco_cost_init_fixed.F
50       and ecco_readparms.F
51     - fix the logic of wsalt=0.and.wsalt2=0 to wsalt=0.or.wsalt2=0 (and theta)
52       to make this statement meaningfull in ecco_cost_weights.F
53    o pkg zonal_filt:
54      - change ZONAL_FILTER S/R interface (allows to filter 2-D fields)
55      - when using rStar, filter uVel*hFacW instead of uVel
56       (tested without topography: fix a Pb of growing instability with NLFS)
57    o pkg/aim/thsice:
58     -Add capacity to read a Q-Flux to be applied in slab-mixed layer thsice_slab_ocean.F
59      (works as SST restoring)
60    o pkg/thsice:
61     -add specific parameter for salt restoring in slab mixed-layer
62       (by default equal to the temperature restoring)
63    
64    checkpoint61v
65    o pkg/kpp:
66     -add double diffusive contributions as a hack, turned off by default
67      for now, and the code can be excluded with a CPP-flag
68      EXCLUDE_KPP_DOUBLEDIFF just as EXCLUDE_KPP_SHEAR_MIX
69     -add a verification experiments to "vermix" to test this code
70    o pkg/mom_common:
71      Move computation of length scales to mom_init_fixed.F (avoid recomputation
72      at each time-steps*levels).
73    o pkg/layers:
74      Created a new package for computing volume fluxes in temperature or
75      [not yet implemented] density layers, e.g. for calculating residual
76      overturning circulations.
77    o pkg/diagnostics:
78      implement a RS type version for the set of DIAGNOSTICS-FILL subroutines
79    o fix few RS/RL type mismatch (check with ifort 11.1 "-warn all" option)
80    o pkg/mdsio (& pkg/rw): rework high level S/R interface:
81      To avoid mixing type (RS/RL) of input/output array argument,
82      replace single mixed-type array with a pair from each type (RS/RL).
83    o setting pickupSuff force to start from a pickup (even if nIter0=0): this
84      is now implemented for all pkgs (previously only done for the main pickup)
85    
86    checkpoint61u
87    o pkg/obcs:
88      - change OB?eta from _RS to _RL and put them into a separate commen block
89      - add code to read OB?eta from a file via obcs_prescribe_read: the code
90        compiles and does not destroy any other experiments, the data is read
91        properly, but the code is not tested in actual applications
92    o ini_mnc_vars.F: if available (ALLOW_CAL), use startTime_1 and 2 to
93      create a meaningful unit attribute for the time coordinate variable
94    o pkg/ebm: add plenty of missing "_d 0" ;
95       update results of experiment global_ocean_ebm (fwd + adjoint tests)
96      Notes: several pieces of code only works for (very) specific set up
97       (domain size, lat range, etc ...); should be documented & stop if one
98       of those assumptions is not meet.
99    o pkg/seaice: add missing "_d 0" in HSNOW initialisation
100       update results of experiments: lab_sea (3 fwd tests + 2 adjoint tests)
101          and offline_exf_seaice (seaicetd + adjoint).
102    o add missing "_d 0" in ShortWave flux penetration (S/R SWFRAC):
103       update results of experiments: lab_sea (4 fwd tests + 3 adjoint),
104        seaice_obcs, global_ocean.cs32x15 (icedyn & thsice) and natl_box (x2).
105    o few changes to pass when compiling with strick checking of arguments
106       across S/R (allow to find few bugs in S/R calls).
107    o pkg/seaice:
108     - seaice_evp: move if-statement out of loop (TEM) at the cost of 11 new
109       2d-fields, for slightly better performance
110    
111    checkpoint61t
112    o pkg/seaice:
113     - remove unused variables in seaice_evp
114     - reduce number of SQRT in seaice_evp and seaice_calc_viscosities
115    o eeset_parms.F, open_copy_data_file.F & ini_parms.F:
116       named file replacing SCRATCH files (for TARGET_BGL & TARGET_CRAYXT):
117       each processor opens a different file (a fix from Matt).
118    o cg2d:
119       use simple EXCH (overlap size = 1 and ignore corners), like in cg3d.F :
120       this reduces number of EXCH calls by 2 when using exch2.
121       For now, keep previous size array for gc2d_nsa.F to avoid Pb with store
122       directives and missing simple EXCH (exch_s3d_rx) adjoint code.
123    o pkg/thsice:
124       add code for Near Infra-Red albedo (from Jeff)
125       (turned on with run-time flag: thSIce_calc_albNIR, in data.ice).
126    o ini_model_io:
127       move (from packages_readparms.F & initialise_fixed.F) to ini_model_io.F
128       MNC & MONITOR initialisation calls; move MNC calls from {pkg}_readparms.F
129       to {pkg}_init_fixed.F for {pkg}= kpp, seaice & shelfice.
130    
131    checkpoint61s
132    o pkg/exch2 (exch2_rxN_cube*):
133       remove last BARRIER (no need to synchronise after getting data from shared
134       buffer (get) as long as any change to buffer (put,recv) is between BARRIER)
135    o change tiling of natl_box (from 2 to 4 tiles) to get it tested with MPI+MTH
136      and generate new output (for the 2 tests) using default rotationPeriod.
137    o pkg/exch2:
138      - always call exch2_*_cube, not exch-1 anymore, if useCubedSphereExchange=F
139        (was already the case with AUTODIFF_EXCH2 defined)
140      - add bj in exch2 arrays and S/R.
141      - can now use pkg/exch2 for regular (non CS) set-up; switch test experiment
142        MLAdjust to exch2 (identical results except with MPI -> truncation diff);
143    o add pkg/longstep for ptracer timestep a multiple of U/V/T/S timestep
144      - adds deltaT argument to the subroutines TIMESTEP_TRACER DWNSLP_APPLY
145        GAD_ADVECTION GAD_CALC_RHS GAD_IMPLICIT_R GAD_SOM_ADVECT
146      - verification experiment natl_box.longstep
147    o build_options: ifort+mpi_aces optfile (following Constantinos advise):
148      allow different versions of ifort (8 or 9) and different versions
149       of mpi (mpich or mpich2) to be used with the same optfile.
150      requires to load a netcdf module and set MPI_INC_DIR (see comments inside
151       optfile). Change testing scripts (example_scripts/ACESgrid) accordingly.
152    o pkg/seaice:
153      fix previous modif (3-level field removed) for old-pickup reading
154    
155    checkpoint61r
156    o pkg/seaice:
157     - clean up the 3-time levels of UICE,VICE,HEFF,AREA in three steps:
158      1. introduce fields for time step (N-1)
159      2. do not use levels 2 and 3 anymore (but keep them)
160      3. replace 3D versions of UICE,VICE,HEFF,AREA by 2D versions. This
161         includes changes to pkg/thsice/thsice_get_velocity.F,
162         model/src/external_forcing_surf.F, pkg/obcs/obcs_apply_seaice.F, and
163         pkg/obcs/obcs_apply_uvice.F.
164     - completely remove code for leap-frog time stepping for second order
165       advection
166     - adjusted adjoint accordingly;
167       gradient checks have improved by an order of magnitude!
168    
169    checkpoint61q
170    o pkg/seaice: fix bug in free slip boundary conditons for LSOR solver
171     - the boundary conditions along open boundaries are unclear, because the
172       associated masks are set to zero and are thus treated as closed when
173       applying the slip-boundary conditions.
174     - move initialisation of grid variables from seaice_init_varia to _fixed
175    o adding doc/diags_changes.txt
176    o model/src:
177      do_the_model_io: rename few pkg S/R which are called from do_the_model_io,
178       to avoid "_diags" naming if no relation to pkg/diagnostics.
179      ini_theta,ini_salt: fix (at least compile the code) reading from NetCDF
180       file and only call PLOT_FIELD_XYZ if debugMode=T.
181      remove few PLOT_FIELD_XY calls outside initialisation.
182      remove few unnecessary BARRIER.
183    o pkg/salt_plume: add SaltPlumeSouthernOcean to allow disabling
184      of salt_plume package in Southern Ocean
185    o pkg/thsice:
186     - fix hOceMxL in overlap (needed for sea-ice advection);
187       update output of experiment global_ocean.cs32x15.icedyn.
188    o pkg/seaice:
189     - make the (placeholder-)tracer IceAge a little more meaningful
190      by avoiding ridging of age due to convergent ice flow
191     - add diagnostics for surface temperature, atmospheric and oceanic
192       heat flux, and atmospheric and oceanic ice growth
193    
194    checkpoint61p
195    o eesupp (global_max & global_sum):
196     - add one more element to buffer (start at index 0) for GL_MAX/SUM output;
197     - remove starting & endding barrier (no longer needed)
198    o pkg/mdsio, writelocal:
199       works also in multi-threaded when LOCBIN_IO_THREAD_SAFE is undefined
200       (remove the STOP): uses shared buffer IO to store data from all threads
201       and then let master-thread write nThreads tiles.
202    o pkg/mdsio (read/write field):
203     - tiled IO done in 1 piece (all levels at a time);
204     - new header file "MDSIO_BUFF_3D.h" with 3-D buffers.
205     - multi-threaded: allow to read/write local (non-shared) array
206       (was already working with singleCpuIO ; now works also without);
207       => no longer needs barrier call after reading a file (added inside
208       mds_read/write field).
209     - move barrier calls outside gather/scatter_2d to mds_read/write_field
210    o pkg/obcs/exf
211      - exf_getffieldrec.F: add a few ". _d 0" and
212                            add code to catch the case fldperiod = 0.  
213      - obcs_precribe_read.F: change if statements so that they match
214                              the variable type (_RL)
215      - add a separate exf_iprec_obcs to exf_set_obcs (by default equal to
216        exf_iprec) as part of namelist EXF_NML_01
217    o pkg/mdsio:
218      - read/write tiled (local) files: read/write 1-level tile chunk at a time
219        (instead of segment of length sNx); expected to speed up tiled IO.
220    o pkg/exch2:
221      - take buffer copy from/to array out of S/R exch2_send/recv into new
222        S/R exch2_put/get ; Exch of local variable now works with MPI+MTH
223        (tested by removing commom block statement in SOLVE_FOR_PRESSURE.h).
224      - ad version of send/recv no longer needed (but needs exch2_ad_put/ad_get)
225      - simplify argument list of S/R exch2_get_uv_bounds and exch2_get_scal_bounds
226        (which replaces exch2_get_recv_bounds & exch2_get_send_bounds) by
227        including Topology header file (and common blocks).
228      - implement EXCH_IGNORE_CORNERS in scalar exchange (rx1);
229        remove 2nd exch call in exch2_s3d_rx (no longer needed).
230      - document S/R arg. list (+ update some comments)
231    o pkg/seaice:
232      - added SEAICE_CLIM_AIR code, which permits modulation of surface air
233        temperature and humidity over sea ice based on climatological values.
234      - clean up computation of Hibler+Bryan (1987) stress coupling for the case
235        of LSR (this change is expected to change the results slightly because now
236        it uses slightly difference moduli from the second last LSR solution, but
237        that is more consistent with the stress computations; this part of the code
238        is not tested in the verification experiments)
239      - fix diagnostics for flux of ice in case of B-grid
240      - turn strain rates eij and press into global fields within global
241        common block in SEAICE.h for more straighforward diagnostics
242      - fix diagnostics for principal stress components, press, zeta, eta
243        to give something meaning full
244    o change tiling of global_ocean.cs32x15 (12 tiles, 32x16) and generate
245      new output (all 4 tests) using default rotationPeriod.
246    o pkg KPP:
247      - add flag (LimitHblStable) to avoid limiting BL depth under stable conditions
248      - fix vertical indices in RI_IWMIX (match between KPP grid from 0 to Nr+1
249        and normal grid from 1 to Nr)
250    o Fix computations of L4rdt in mom_calc_visc.F
251    o eesupp:
252      new S/R ALL_PROC_DIE (like EEDIE, without irrelevant threads err msg):
253      should be called before a "stop" if we know that all process are going
254      to stop; if one Proc does call this S/R, will hang in MPI_FINALISE.
255    
256    checkpoint61o
257    o pkg/exch2: change check_depths to issue just a warning (instead of error+stop)
258    o model/src/ini_curvilinear_grid.F:
259       compute angleSin/CosC when they are not read from a file
260    o pkg/seaice:
261       add pseudo time stepping for LSOR
262    o pkg/exch2:
263       temporary fix for exch2_s3d_rx; update results of exp. hs94.cs-32x32x5.impIGW
264    o pkg/seaice:
265       Adding separate sea ice albedo, drag coefficients, and HO in Southern
266       Ocean from those in Arctic Ocean.  See *_south in SEAICE_PARAMS.h
267    o SingleCpuIO:
268       fix bug put before chkp61n (May 11), when more than 2 MPI cpu are used.
269    o pkg/seaice:
270       put exchanged variable in (local) common block for MPI+Multi-Threads
271       to work (necessary with exch1, and for now with exch2 too).
272    o verification: to get more experiments tested with mpi, mth and mpi+mth,
273      change tiling of:
274       aim.5l_Equatorial_Channel, aim.5l_LatLon, dome, exp4, global_ocean.90x40x15,
275       hs94.cs-32x32x5, MLAdjust, offline_exf_seaice & tutorial_plume_on_slope
276      update output of exp:
277       exp4, global_ocean.90x40x15(+.dwslp), MLAdjust(all 5),
278       tutorial_plume_on_slope and hs94.cs-32x32x5 (use default rotationPeriod)
279      + ideal_2D_ocean: use default rotation period + test Global_Sum_SINGLECPU
280                       (note: output.txt generated on faulks using only 1 tile)
281    o eesupp & mdsio (SingleCpuIO):
282     - remove MISSING_TILE_IO (from MDSIO_OPTIONS.h), replaced by run-time
283       parameter "W2_useE2ioLayOut" (read from file "data.exch2").
284       Note: was not effective for globalFile & useSingleCpuIO=F; now fixed.
285     - move MDSIO_SCPU.h (pkg/mdsio) to EEBUFF_SCPU.h (eesupp/inc).
286     - fix GLOBAL_SUM_SINGLECPU when using Exch2; re-use same buffers and same
287       gather/scatter S/R as with SingleCpuIO (=> 1 less 2D global RL array).
288    o pkg/exch2:
289     - new code to set-up W2-Exch2 topology (replace matlab-topology-generator):
290       read parameter file "data.exch2" if it exists; otherwise try default regular
291       cube without blank-tile; new header file "W2_EXCH2_SIZE.h";
292     - update matlab-topology-generator (exch2_setup_cs6_print.m) to be compatible
293       with new code (not to be used, just as a backup solution).
294     - add examples (e.g., for lat-lon-cap_120) of parameter file "data.exch2"
295       in utils/exch2/input.
296    
297    checkpoint61n
298    o eesupp & mdsio (SingleCpuIO):
299      - move mapping to global io-buffer inside gather_2d/scater_2d: this save
300        memory (1 less 2D global RL array); skip 1 buffer copy; and only send/
301        receive real*4 array (instead of real*8) to read/write 32.bit files.
302        (new template for gather_2d/scater_2d, new set of S/R MDS_PASS_R4,8toRL,S
303         and remove new mapping S/R)
304    o pkg/mdsio: in preparation for topology-generator within pkg/exch2:
305      - Change declaration of SingleCpuIO buffer, reduced to only 1 dim.:
306        xyBuffer_size, which is set to W2_ioBufferSize from W2_EXCH2_PARAMS.h
307        when using exch2. Add S/R to map global io-buffer to global model array.
308      - uses exch2_global_Nx,y instead of exch2_domain_nxt,nyt.
309    
310    checkpoint61m
311    o write_utils : change WRITE_1D_R8 to WRITE_1D_RL
312      and add 3 other S/R for other types (R4,R8,RS).
313      Change calls to WRITE_0D/1D_R[4,8,S,L] to match the type of argument.
314    o eesupp/inc/CPP_EEMACROS.h (EXCH & GLOBAL_SUM/MAX macros):
315     - ensure suffix (_R4,_R8,_RS,_RL) correspondance between macro and S/R ;
316     - reduce number of macro definitions (keep only those which are used);
317       can always call directly the corrresponding S/R if needed.
318     - everywhere in the code: change macros (EXCH & GLOBAL_SUM/MAX) suffix
319       _R4/_R8 to _RS/_RL when applied to _RS/_RL variable.
320     Fixed wrong type of arg in:
321       atm2d/put_ocnvars.F cheapaml/cheapaml.F ocn_compon_interf/ocn_apply_import.F
322       ctrl/ctrl_map_ini_ecco.F seaice/seaice_do_diags.F seaice/seaice_model.F
323     To fix: global_sum of var in common block is wrong (multi-threaded) in:
324       dic/dic_atmos.F ebm/ebm_area_t.F ebm/ebm_zonalmean.F sbo/sbo_calc.F
325     To fix: aim_v23/aim_do_co2.F (BARRIER & GLOBAL_SUM within bi,bj loops)
326    o adjustment.cs-32x32x1: test "blank tiles" when compiling with mpi; 2nd
327      "nlfs" mpi test is going to stop when checking for unconnected tile egdes.
328    o eesupp/src: new S/R to stop everyone when 1 (or more) Proc. find an error
329    o pkg/exch2: new S/R EXCH2_CHECK_DEPTHS to check that unconnected tile
330      edges are closed (zero depth); might happen with "blank tiles";
331      for now, disabled if using OBCS.
332    o tools/gemake2: delete modifs from March 27-29 2009 (with option "-mpi":
333      link *_mpi files from "MODS" dir) to return to a strait-forward behavior.
334    o move read_write.F to write_utils.F ; new parameter (maxLengthPrt1D)
335      to reduce length of 1.D array print in STDOUT.
336    o adjustment.cs-32x32x1: changed to oceanic test with 1 continent
337      + use 48 tiles (16x8): this will allow to test "blank tiles".
338    o start to test MPI + multi-threaded (change testreport to skip tests
339      where number of tiles do not match).
340    o genmake2: add option "-omp" to turn on Open-MP ;
341      passed to testreport (if using -mth) ; merge few (*+mth) optfiles.
342    o pkg/exch2 (+ utils/exch2): ignore blank tiles (instead of removing them)
343      and keep the original tile numbering. Note: compatible with old
344      W2_EXCH2_TOPOLOGY.h & w2_e2setup.F topology files.
345    
346    checkpoint61l
347    o Overlaps had been forgotten in calculating ijk keys : fixed
348    o fix cyrus makedepend for gcc 4.4
349    o experiment fizhi-cs-aqualev20:
350      switching to new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE)
351      and generate new output. Note: new output is much closer to the old
352      one (v1.8) generated with pgf77 -O2 on Mar 14 2007 than it is from
353      the previous one (v1.9) generated with pgf77 -O0 on Jun 13 2007.
354    o pkg/fizhi:
355     - change to avoid indices going deliberately over array-bounds
356     - remove unnecessary MPI stuff
357     - perpetual spring equinox with "#define FIZHI_USE_FIXED_DAY"
358     - new version of S/R GETPWHERE available with #define TRY_NEW_GETPWHERE:
359       does not go over array-bounds and therefore returns reliable output.
360     - in fizhi_driver.F & fizhi_turb.F, fix "get_alarm" calls:
361       this S/R has 4 output arguments, which are used inside "get_alarm";
362       when it is called with the same variable "ndum" in place of several
363       output arguments, this produces weird side effect inside "get_alarm"
364      (e.g., datein=dates(n) is overwritten by timein=times(n) since both
365       datein & timein, resp. 2nd and 3rd arg., are pointed to the same "ndum"
366       address) and produces error.
367    o tools/gemake2: (March 27-29 2009)
368      with option "-mpi": link *_mpi files from "MODS" dir (this is what
369      testreport does).
370    o lab_sea experiment: change from 2x1 tiles to 2x2 tiles and regenerate output
371    o pkg/seaice: fix bug in new version of S/R SEAICE_LSR.F:
372       update lab_sea.lsr & lab_sea.salt_plume results
373    o pkg/seaice:
374      Major overhaul of the LSOR solver: change discretization from original
375      finite differences to finite volume. The old routine is still in the
376      file seaice_lsr.F and can be turned on with the CPP-flag
377      SEAICE_OLD_AND_BAD_DISCRETIZATION
378      Along with this change, the discretization of the strain rates is changed.
379      The same flag turns on the old discretization in seaice_calc_strainrates.F
380      All verification experiments with seaice are affected (except for
381      seaice_exf_offline); global_ocean.cs32x15/input.icedyn recovers the old
382      results by setting the above flag.
383      Further changes involve changes in defaults:
384      - ALLOW_FLOODING is defined and turned on by default
385      - SEAICEadvSnow = .true. is now the default
386      - SEAICEadvSalt = .true. is now the default
387      - SEAICEadvAge  = .true. is now the default
388      - SEAICE_clipVelocities  = .false. is now the default
389                                         (as per J. Zhang's recommendation)
390      - B-grid, and thus not tested: SEAICE_TEST_ICE_STRESS_1/EXPLICIT_SSH_SLOPE
391        is defined, SEAICE_TEST_ICE_STRESS_1 is renamed into SEAICE_BICE_STRESS
392      - seaice_growth: replace computation of UG by a simple copy from wspeed
393    
394    checkpoint61k
395    o pkg/seaice: a few bug fixes mostly concerning the metric terms:
396      seaice_lsr: fixed a few metric terms,
397                  affects lab_sea.lsr, lab_sea.salt_plume, seaice_obcs
398                  add more debugging diagnostics
399      seaice_evp: removed superfluous many metric terms of FV discretization
400                  of stress divergence
401                  affects lab_sea, lab_sea.hb87
402      seaice_ocean_stress: removed superfluous many metric terms of FV discretization
403                  of stress divergence for non-evp solver
404                  (this part is not tested anywhere)
405      seaice_calc_strainrates: fixed a bug in no-slip boundary conditions,
406                  they were effectively only half slip
407                  affects lab_sea.hb87
408      updated all relevant verification experiments (except lab_sea//output_adm.txt
409        which was left over, but fails at level 7 & 6)
410    
411    checkpoint61j
412    o pkg/seaice: turn a few hard wired parameters into run time parameters
413    o pkg/seaice/exf/monitor: turn netcdf coordinate variable T into model
414      time in seconds as promised by the usints in seaice_monitor and exf_monitor
415    o pkg/mnc: fix the coordinate variables for multi-tile curvi-linear grids
416      that are not cubed-sphere grids
417    o pkg/seaice: fix a bug for the rare case of SEAICE_VECTORIZE_LSR
418    o pkg/ctrl:
419      fix bug in ctrl_depth_ini.F (EXCH_XYZ was applied to 2-D field xx_r_low)
420    o non-hydrostatic (calc_gw.F):
421      fix viscA4 on CS-grid + fix diagnostics: Wm_Diss & Wm_Advec
422      update output of exp. global_ocean.cs32x15.viscA4
423    o remove backward compatibility for thetaMin,phiMin
424      (replaced by xgOrigin,ygOrigin on Jan 27, 2009)
425    o pkg/exf: fix a serious bug in exf_set_uv.F: do a rotation of the
426      interpolated wind field not only for curvilineargrid=.true., but also
427      for a rotated grid (rotateGrid=.true.)
428    o pkg/exf: add capability to bypass interpolation for runoff
429      by setting yet another CPP-flag
430    o eesupp/src, B-grid exchange:
431      add simple (6 tiles, non MPI) CS exch + standard interface S/R.
432    o autodiff
433      new CPP option ALLOW_TAMC_SINGLEPREC_COMLEV
434      allows to switch to single-prec common blocks;
435      corresponding switch occurs in tamc.h, integer isbyte
436      TAF store directivs "byte" and "kind" seem equivalent;
437      Most tamc.h have been updated correspondingly.
438    
439    checkpoint61i
440    o autodiff:
441      fix autodiff_sore/_restore indices for obcs
442      (spotted by I. Hoteit, M. Mazloff)
443    o pkg/autodiff, pkg/ctrl:
444      Add flag to reduce all tapelev I/O to single-prec.
445      In data.ctrl set
446        doSinglePrecTapelev = .TRUE.
447    o model/src/ini_curvilinear_grid.F, new grid-file format without EXCH2:
448      check in hack for SX8 compiler (for dxV, dyU); remove it afterwards.
449    o pkg/shelfice: fix bug with SHELFICEconserve flag, prepare for
450      real fresh water flux (not yet)
451    o pkg/mdsio & rw:
452     - add argument & option to S/R MDS_WRITEVEC_LOC (avoid Open/Close & write-meta)
453     - add simple interface S/R to MDS_WRITEVEC_LOC in pkg/rw: WRITE_GLVEC_RX.
454    o pkg/flt:
455     - replace FLT_INIT by 3-steps standard initialization S/R: readparms,
456       init_fixed & ini_varia.
457     - clean-up & simplify linear interpolation S/R:
458       move flt_bilinear.F -> flt_interp_linear.F ; add arg. myThid.
459     - fix some indices (mainly vertical index) ; add IMPLICIT NONE.
460     - more efficient I/O, using new options of MDS_WRITEVEC_LOC S/R.
461     - add vert. coordinate & horiz. indices to output files.
462     - change vertical position in initial condition, from index to depth [m].
463     - store horizontal (decimal) indices i,j in common block (instead of coord. x,y)
464       (easier to get to a curvilinear grid) ; delX,delY no longer used.
465    o pkg/ggl90: a few modifications:
466     - fix bottom boundary condition, and interpolation of KappaE
467       near top and bottom
468     - use same set of viscosity/diffusivity for TKE/momnetum/tracer
469     - add smoothing option as in Blanke and Delecluse (1993) (--> ALLOW_GGL90_SMOOTH)
470     - add a few options for mixing-length upper limit (--> mxlMaxFlag)  
471    o rename thetaMin,phiMin -> xgOrigin,ygOrigin
472      (maintain temporary backward compatibility, until next checkpoint)
473    
474    checkpoint61h
475    o pkg/diagnostics with "periodic averaging diagnostics":
476      fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
477    o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
478    o pkg/obcs: fix loop ranges for balancing code
479    o pkg/flt:
480     - improve criteria for finding which tile owns a float.
481     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
482    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
483      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
484      with ocean biogeo)
485    o pkg/flt:
486     - do some cleaning and fix the restart ;
487     - add output.txt in flt_example/results to get this pkg tested.
488    o genmake2: add an EXTENDED_SRC option and flag.
489       for now, cannot be turned on on command line (only through genmake_local)
490    o pkg/mdsio: read/write vector:
491     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
492     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
493       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
494     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
495      (drop to 4 digits matching for grad). But this test does not look very
496      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
497    
498    checkpoint61g
499    o pkg/flt:
500      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
501       + make OPTIONS file more standard.
502      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
503      - fix _BYTESWAPIO CPP-Flag
504      - standard reading of file-parameter "data.flt"
505      - fix argument list of S/R FLT_RESTART
506      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
507    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
508    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
509      a still unfixed compiler/optimization bug
510    
511    checkpoint61f
512    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
513      update results of global_ocean.cs32x15.icedyn test.
514    o move getcon.F from model/src to pkg/fizhi.
515    o pkg/exf: add parameter for extrapolation of temp up to the surface
516       and option to prevent negative evap (in bulk_largeyeager04 only).
517    o Prather Advection scheme: fix tracer conservation for divergent flow
518      (e.g., when using NonLin Free-Surface).
519    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
520    o gmredi (Visbeck-variable-K):
521     - add more parameters to Visbeck-variable-K.
522     - use a 5 points average for dSigmaR in Visbeck-K calculation
523       (more "homogenous": same stencil and same weights as in dSigmaH)
524     - update output of ideal_2D_oce experiment.
525    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
526      (#undef REAL4_IS_SLOW)
527     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
528       coordinate variable
529     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
530       (surface forcing fields), removes some of the functionality
531     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
532     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
533       probably not all: copy _RS surface flux fields to RL field before
534       calling DIAGNOSTICS_FILL
535     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
536       real*4 (CALL EXCH_*_RS) versions.
537     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
538       (generate new output).
539    
540    checkpoint61e
541    o gmredi (Visbeck-variable-K):
542      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
543      - change computation of Visbeck-K where Slope > Smax :        
544        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
545        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
546    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
547      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
548    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
549    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
550      does not become too large (to avoid precision problems in implicit-diffusion
551      solver); update ideal_2D_oce output.
552    o pkg ggl90:
553      - in ggl90_cal.F: compute only one set of visc/diff, used to
554        step forward TKE/T/S/momentum
555      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
556        have Prandlt =1)
557    o gmredi (fm07):
558      - add lower limit on Transition layer thickness + lower limit on 1/lambda
559      - allow to set few more params from data.gmredi
560    o pkg ggl90:
561          - add missing sqrt(2) factor in computation of mixing length
562            scale in ggl90_calc.F
563            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
564    
565    checkpoint61d
566    o adjoint modifs
567      - adapt to new field rhoInSitu
568      - allow to revert from StoreDynVars2D, StoreDynVars3D
569        to individual fields
570        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
571    o store 3-D (in-situ) density in commom block (DYNVARS.h)
572     - save 1 rho computation.
573     - no longer modify T & S inland when using down_slope pkg.
574    o gad_som : allow to switch to SOM advection for T & S without corresponding
575      pickup files (using new S/R: MDS_CHECK4FILE).
576    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
577      (for useSingleCpuIO to work in multi-threaded)
578    o pkg/shelfice:
579     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
580       with SHELFICEtopoFile in data.shelfice
581     - move code for reading ice shelf topography and modifying hFacC into separate
582       subroutines of the shelfice package
583     - separate initialisation of "fixed" and "variable" variables
584     - kTopC is not (yet) replaced by kSurfC, although this is possible
585    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
586    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
587      and rename:
588      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
589      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
590    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
591    
592    checkpoint61c
593    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
594      to add mass source/sink of fluid in the interior (3-D generalisation
595      of oceanic real-fresh water flux).
596    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
597    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
598    o new pkg: down_slope
599      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
600      - presently, modify T & S inland (dwnslp_calc_rho.F).
601        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
602      - implementation for ocean in P-coords not tested.
603      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
604    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
605      (to facilitate conversion of oceanic pkg to p-coordinate).
606    o change FIND_RHO to FIND_RHO_2D :
607      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
608    o new pkg: cheapaml
609    
610    checkpoint61b
611    o exch2:
612      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
613      - no longer depend on the order sequence (N,S,E,W).
614      - 3rd exchange no longer needed (tested with 24 tiles).
615      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
616      - exch_UV_A-grid readily available (but not yet tested).
617      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
618      (both are no longer needed) in exch_uv: no effect in forward run; but
619       get truncation error differences with adjoint exch.
620    o exch2:
621     - change index-bounds storage (moved from target to local tile,
622       more intuitive this way) ; rename/remove some variables.
623     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
624    
625    checkpoint61a
626    o exch2/matlab-topology-generator:
627      fix bug in index bounds for N-S internal exchange (hard to tell if this
628      had any effect on the solution).
629    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
630      is exceeded
631    o testreport: modify syntax of awk, so that it works also with
632      awk, and not only with nawk and gawk
633    
634    checkpoint61
635    o autodiff
636      Change default for TAF usage by removing argument '-nonew_arg'
637      This changes TAF subroutine argument list (ordering of active var.)
638      Omission of this flag leads to incompatibility w.r.t. TAMC
639      To restore TAMC-compatibility, need following modifs:
640      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
641      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
642      Tested TAF version is 1.9.22
643      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
644    
645    checkpoint60
646    --->>> This is the last checkpoint for which generating the adjoint
647    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
648    --->>> by default.
649    --->>> Future checkpoints will ommit this flag by default.
650    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
651    o pkg/grdchk: Add gradient check to etan0 perturbations.
652    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
653    o pkg/autodiff: more flexibility in zeroadj.
654      model/src: modifying do_oceanic_phys.F accordingly.
655    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
656    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
657      special setup of gmredi for which the adjoint is stable
658      enough for parameter optimization.
659    o bridging the gap between eddy stress and GM.
660      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
661          along with a change in CPP option (now ALLOW_EDDYPSI).
662      -> when using GM w/ GM_AdvForm:
663          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
664          is applied either in the tracer Eq. or in momentum Eq.
665          depending on data.gmredi (intro. GM_InMomAsStress).
666      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
667      The key modifications are in model/src/taueddy_external_forcing.F
668      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
669    
670    checkpoint59r
671    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
672      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
673      fix option to read coriolis(@ cell-corner) from files with CS-grid.
674    o pkg/mnc: add some attributes to standard 1D-coordinate variables
675    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
676      mass points, when using mnc for output
677      - add runtime parameter (missing_value, missing_value_int) to override
678        default (which is the value of getcon('UNDEF'))
679    o pkg/mnc: prepare mnc for the actual use of missing values with the
680      diagnostics package: small fix in mnc_cw_readwrite.template and more
681      initialisation of never used fields
682      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
683      versions
684    o pkg/thsice/thsice_ini_vars.F added default initial values so that
685      thermodynamics sea ice solver does not blow up when some initial fields
686      are missing.
687    o move from external_forcing_surf.F to ini_forcing.F
688      the p-coord. hack consisting in using pLoad to set phi0surf ;
689      update output of tutorial_global_oce_in_p (affected @ truncation level).
690    o Freshen up a bit hs94.1x64x5, notably:
691      remove rotationPeriod and tRef=5*0. (adjoint only), and add
692      exactConserv=.TRUE.
693    o pkg/generic_advdiff:
694      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
695      applies to files where Temperature & Salinity 2nd Order moments are used.
696    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
697      this uses a dynamically allocated internal state data structure
698      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
699      and requires a fortran 90 compiler
700    
701    checkpoint59q
702    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
703       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
704    o Refresh tutorial_global_oce_biogeo, notably:
705      - change bathymetry (put back seamounts in ACC, use hFacs)
706      - change EOS (POLY3 --> JMD95Z)
707      - use Bryan-Lewis vertical diffusivity
708      - use multidimensional advection
709      - remove old virtual virtual in dic pkg, now done through ptracer pkg
710      - change a couple of parameters in dic pkg
711    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
712    o pkg/obcs: change default to OBCSfixTopo = .true.,
713      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
714      - replace "debugMode" with "debugLevel .GE. debLevB"
715    o implementation of TAF directives for gchem,cfc,dic
716    o remove "exp5" (replaced by tutorial_deep_convection).
717    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
718      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
719      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
720      --> changes results in exp4, seaice_obcs
721    o tutorial_deep_convection :
722      update the set-up and increase resolution and domain size ; start
723      from pseudo initial conditions = output at t=120mn in order to see
724      something happening when running testreport.
725    o pkg/seaice: add os7mp as an advection scheme
726                  add check for advection schemes
727                  add a flag for restoring T and S underneath sea ice
728    o pkg/my82: add netcdf-support and diagnostics
729    o thsice pkg:
730      - Now hsMax limits snow height by turning it into ice following
731        flooding scheme (and now conserving energy)
732      - Slight rewriting of the formula in thsice_calc_thick.F
733      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
734      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
735    
736    checkpoint59p
737    o gchem / dic / cfc :
738      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
739      - add new parameter files: "data.dic" & "data.cfc" ;
740      - various re-arrangement in initialisation & header file ;
741      - fix tutorial_global_oce_biogeo for multi-threaded test.
742    o pkg/dic: test for "pickup_dic" file when restarting ;
743      if no pickup-file, can restart with a re-initialised pH (same as it did
744      before) providing pickupStrictlyMatch is set to False.
745    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
746      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
747    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
748      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
749    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
750     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
751       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
752    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
753       scheme to use for vorticty-term ;
754     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
755       (with default selectVortScheme, return to original discretisation)
756     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
757    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
758    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
759      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
760      also fix diagnostics VISCAHW & VISCA4W.
761    
762    checkpoint59o
763    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
764    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
765      move a few statemens out the main loop into separate loops
766    o pkg/shelfice:
767      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
768        (kg/m^2/s), does not break tests, because in verification/isomip,
769        rhoConstFresh=rhoConst (by accident)
770      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
771      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
772        new file model/src/seawater.F, so that they are available for all pkgs.
773      - convert potential temperature into in-situ temperature. This changes the
774        isomip tests => update tests
775    o add a flag writePickupAtEnd (default=true) to be able to suppress
776      writing a pickup at the last timestep
777    o tools/mpack-1.6 :
778      - disable automake (not working) and autoconf (not needed).
779      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
780        also cleaner with much less compilation warnings.
781    o pkg/profiles:
782      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
783      (for "less than 32 characters name" compiler requirement)
784    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
785      conditions that have a different sampling frequency than S/T/U/V obcs
786    o pkg/diagnostics (stats-diags):
787      - fix global Min/Max in case 1 processor get only empty tiles
788    o genmake2: replace (4 times)
789         make genmake_tc_1.o >> genmake_warnings 2>&1
790      with
791         COMM="$CC $CFLAGS -c genmake_tc_1.c"
792         echo $COMM >> genmake_warnings
793         $COMM >> genmake_warnings 2>&1
794      to make genmake2 always see the value of CC as specified in the optfile.
795    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
796      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
797      - modify verification advect_cs test to test SOM-advection on CS-grid.
798    o pkg/ctrl:
799      - Rewrite of ctrl_map_ini_ecco.F,
800        introducing a generic routine (ctrl_map_ini_gen.F).
801      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
802    
803    checkpoint59n
804    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
805      number in dedicate array "hdiag":
806      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
807        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
808      - many small changes (integer format) for large number of diagnostics
809      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
810        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
811    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
812      usingSphericalGrid, this allows to define the rotated grid coordinates
813      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
814      geographical coordinates according to the inverse of the rotation defined
815      by the Euler angles, so that Coriolis parameter and online-interpolation by
816      exf works with the geographical coordinates on XC/YC/XG/YG.
817      Naturally, this feature does not work with all packages, so some
818      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
819      profiles), because there the coordinates are assumed to be regular
820      spherical grid coordinates.
821    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
822      - introduce isopycnal diffusion coefficient control.
823    o tools/adjoint_options:
824      - additional control vector components.
825    o pkg/mnc: have mnc create marginally meaning full coordinate variables
826      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
827    o pkg/mypackage:
828      - add example of read/write pickup for state-var ;
829      - add entry points to the main code for state-vars diags & write-pickup.
830    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
831      transitions for useExfYearlyFields
832      - add new subroutine that determines the file to read from for
833        use*YearlyFields = .TRUE. and .FALSE.
834      - add a verification experiment to global_with_exf that tests
835        useExfYearlyFields with USE_EXF_INTERPOLATION defined
836    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
837      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
838      subroutines (which could be generated from a template, because they are
839      almost identical), for now they are included in obcs_prescribe_read.F for
840      simplicity
841    o pkg/exf:
842      - add a little more diagnostic to exf_interp_read (in analogy to
843        mds_read_field, can be turned off with debugLevel < debugLevA=1)
844      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
845        ugly but fast by unrolling short inner loops, inserting a unroll=8
846        directive in routine lagran, and splitting a loop and making do while the
847        outermost loop (the latter requires the intoduction of index arrays)
848    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
849    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
850      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
851    o verification/seaice_obcs: updated for restart test and latest options
852    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
853      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
854      for now this is only available for the C-grid code and also within
855      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
856    
857    checkpoint59m
858    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
859      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
860    o gad_som : fix flux output (& diagnostics) to have same units as other  
861      advection scheme fluxes (was previously multiplied by deltaT).  
862    o added verification/seaice_obcs both to test seaice open boundaries
863      and to provide an example matlab scrpt for generating them
864    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
865    o pkg/salt_plume: clean up salt_plume_frac.F to
866      remove redundancy in PlumeMethod 1 and 4
867    o pkg/kpp: added saltplume diagnostics
868    o pkg/obcs and pkg/seaice:
869      - do not set uice and vice to zero when OB*icefile are unspecified
870      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
871      - moved seaice tracer obcs after call to seaice_growth
872    o pkg/salt_plume: added various options for salt plume depth
873      criterion and for vertical distribution of the salt
874    
875    checkpoint59l
876    o pkg/ptracers: new version of ptracers pickup:
877      read meta file and write only fields which are needed to restart.
878      ( same logic as main pickup file ; also using pickupStrictlyMatch )
879    o pkg/seaice:
880      - add timescale for melting due to warm mixed layer as a means of
881        setting SEAICE_availHeatFrac more conveniently
882      - add a CPP-flag/runtime parameter check for flooding algorithm
883      - reformulated availHeat in seaice_growth.F to be independent of AREA
884    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
885      unit changes
886    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
887    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
888      SX vector computer.
889    o pkg/seaice:
890      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
891        seaice forcing fields can now be read only through pkg/exf
892      - removed some unused halos
893    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
894    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
895      or U/VICE from U/VWIND before computing U/VSTRESS
896    
897    checkpoint59k
898    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
899      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
900    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
901      all experiments pass when compile with un-initialised var. checking option.
902    o added pkg/salt_plume
903    o script to test restart (for now, in MITgcm_contrib/jmc_script)
904    o pkg/seaice: new read/write pickup version.
905      read meta file and write only fields which are needed to restart.
906      ( same logic as main pickup file ; also using pickupStrictlyMatch )
907    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
908    o lab_sea.hb87: modify the domain & update output.hb87.txt :
909      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
910      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
911      process. Fixed here by closing the domain at the Northern boundary.
912    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
913    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
914      a set of consecutive levels in/from a 3-D array.
915    o pkg/ptracers:
916      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
917      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
918    
919    checkpoint59j
920    o in pkgs: dic, obcs, offline, rbcs:
921      standard way to compute coeff. for time interpolation between 2 time reccords
922      which retains full precision (& make results less dependent on compiler).
923      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
924    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
925      packages instead of reading ice cover and wind speed separately
926    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
927     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
928      to allow to compile customized code before the update)
929    o cleaning-up:
930      - fix CPP instruction syntax in pkg/obcs
931      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
932        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
933      - fix some threads issue in IO parts.
934    o pkg/dic:
935      - add tons of "_d 0" (--> much better testreports !)
936       and then update outputs of tutorial_global_oce_biogeo
937    o pkg/mom_fluxform:
938      add a special version of momentum advection intended to conserve momentum
939      next to a bathymetry step or a coastline edge. (default = off = #undef)
940    o new read/write pickup version:
941      - for now, only implemented for main (mdsio) pickup file.
942      - write out only what is needed to restart; merge pickup_nh , pickup_ph
943        and main pickup together.
944      - read meta file; read only what is needed to restart; stop if a field
945        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
946        if it make sense (even if the restart is not perfect).
947      - if no meta file, assume that pickup to read corresponds exactly to
948        a pickup that would currently be written.
949      - read pickup written in the old format (until checkpoint59i) if it
950        recognizes an old meta file (no field-list).
951      - add a meta file in exp. which starts from a pickup: 2 cases:
952        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
953         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
954        b) a meta file describing the content of the associated pickup file
955         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
956    o pkg/mdsio & pkg/rw:
957      - new routine to read a meta file ; new set of routine to read
958        Multiple-fields file (with meta file).
959    o added open boundary conditions capability for seaice
960        HSNOW, HSALT, UICE, and VICE
961    
962    checkpoint59i
963    o adjoint:
964      * fix multiDimAdvection adjoint
965        (partial recomputation problem by TAF for fVerT(:,:,kDown)
966        and comlev1 size definition (maxpass vs. max. number of tracers)
967      * verification/global_ocean.90x45x15 adjoint now tests
968        NLFS and multiDimAdvection using DST3 (=30)
969      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
970    o pkg/kpp: add "_d 0" to real constant (if missing);
971      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
972      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
973    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
974      for internal parameters related to restart process (formerly from PARAMS.h)
975      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
976    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
977      as argument. (only atm2d & obcs write_pickup have not yet been updated)
978    o pkg/monitor:
979      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
980      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
981      - account for deep Atmosphere factor and density factor (anelastic)
982    o added open boundary conditions capability for seaice HEFF and AREA
983    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
984      thermodynamics
985      - requires a little reorganization, which affects the testreport results
986        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
987        so that now the conservative form is tested
988      - add a few comments
989    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
990    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
991    o add new diagnostics to seaice: advective, diffusive fluxes (only for
992      multidim-advection, for scheme 2 they are not filled) and transports,
993      thermodynamic growth rates
994    o change units of EmPmR (inside the code, + within coupling interface)
995      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
996      Affects results @ truncation level (cg2d match) and update output of
997       experiments: lab_sea(6), global_ocean.90x40x15(10),
998      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
999      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
1000      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
1001      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
1002    
1003    checkpoint59h
1004    o pkg/exf:
1005      - improve vectorization by moving if-statement out of loops in
1006        exf_mapfields, exf_radiation
1007      - exf_bulkformulae.F: introduce 2D fields and vectorize code
1008    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
1009    o testreport:
1010      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
1011        monitor & update offline_exf_seaice exp. output.
1012      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
1013    o pkg/seaice:
1014      - bug fix in the evp solver: boundary conditions were affected be
1015        masking of zMax/zMin (changes results)
1016      - minor bug fix in boundary conditions in seaice_calc_strainrates
1017        (changes results for no_slip)
1018      - seaice_lsr.F: make interpolation of eta dependent on boundaries
1019      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
1020      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
1021        stress formulation and no-slip boundary conditions
1022    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
1023      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
1024    o pkg/seaice: a first HSALT time stepping equation has been checked in
1025    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
1026      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
1027      without requiring DO-IF statements
1028    o pkg/thsice:
1029      use continuous power-law function for partition of energy between lateral
1030      melting/freezing and thinning/thickening ; old code using step function
1031      still available with #undef THSICE_FRACEN_POWERLAW
1032      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
1033    o testreport: change AD testing : check against results/output_adm.txt
1034      using same scripts as for forward test.
1035    
1036    checkpoint59g
1037    o adjoint testing: in preparation for changing testreport:
1038      - output format: cost and grad written on separated lines
1039      - ad output results in directory "results" (instead of "results_ad")
1040    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
1041    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
1042    o pkg/ecco: allow user defined cost function contributions
1043    o testreport:
1044      Allow to choose (per experiment) the list of tested output variables
1045       and the main variable (used to issue a pass/FAIL ) ;
1046      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
1047      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
1048      Also modify printing of summary:
1049       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
1050       b) echo the list of tested variables in the individual summary.txt of
1051          each experiment.
1052    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
1053      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
1054      (but still depend on the tile decompostion of the domain).
1055    o pkg/seaice: change a discretization detail to make the B-grid code
1056      "more symmetric". This change is likely to remove all "ridges/leads" that
1057      where quasi-aligned with the grid in B-grid solutions. It may also be
1058      the solution to the stress coupling issues with the B-grid.
1059    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
1060      remove .cvsignore from input dir. (since testreport no longer run here).
1061    o pkg/thsice:
1062     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
1063     - fix reshaping of sea-ice just after advection:
1064       melt all the ice only if ice-volume is too small.
1065     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
1066       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
1067     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
1068    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
1069      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
1070    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
1071      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
1072      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
1073      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
1074      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
1075      -> update output.txt
1076    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
1077     this affects truncation error: -> update output.txt of exp:
1078      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
1079      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
1080    
1081    checkpoint59f
1082    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
1083    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
1084      a bounded range (in forward mode)
1085    o pkg/ecco, ctrl, autodiff and mom_common:
1086     internal parameter controls, completements of implementations
1087    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
1088    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
1089      (not seem any difference in testing results).
1090    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
1091       at face corners.
1092    o pkg/generic_advdiff:
1093     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
1094      loop range indices for computing vertical advection tendency
1095      and do the calculation in the interior only (no overlap) ;
1096      for now, only implemented for SOM advection (to save CPU time).
1097     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
1098    o exch2 adjoint
1099      First set of changes:
1100      - add exch2 hand-written adjoint templates
1101      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
1102        This will require cleanup in pkg/autodiff/*.F
1103        (changed routines currently kept separate in verif. code/)
1104      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
1105        that used to hide exch2 or cubed-sphere specific code
1106        (commented via 'cph-exch2')
1107    o pkg/seaice
1108      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
1109    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
1110       output of global_ocean.cs32x15.thsice .
1111    
1112    checkpoint59e
1113    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
1114      for B-grid vector (not yet tested) and C-grid vector (<- only used
1115      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
1116    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
1117      (#ifdef ALLOW_SALT_PLUME)
1118    o gather_2d/scatter_2d: removed halo regions
1119    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
1120      scheme and the corresponding test case (under front_relax dir). For now,
1121      only available with Skew-flux form and not yet tested in realistic set-up.
1122      adjoint: store directives updated, but gradient checks deteriorated,
1123      so maybe GM/Redi adjoint is now broken.
1124    o seaice adjoint
1125      * add AREA, HEFF, HSNOW as control variable
1126        (should not change lab_sea results)
1127      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
1128    o pkg/seaice:
1129      * added computation of saltFlux in seaice_growth;
1130        For time being, sea ice salinity is assumed constant
1131        contribution of snow flooding to freshening of sea ice is neglected.
1132        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
1133        defaults to 0.0 in order to maintain backward compatibility.
1134        Typical values for SEAICE_salinity are 4 to 10 g/kg.
1135      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
1136      * added SEAICE_availHeatFrac, which specifies fraction of surface level
1137        heat content used to melt or grow ice
1138      * commented out cap of HICE: it helps keep ice thinner
1139      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
1140      * applied OBCS T/S mask to HEFFM sea ice mask
1141    
1142    checkpoint59d
1143    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
1144     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
1145     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
1146    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
1147     and change default value of parameter "GM_Small_Number";
1148     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
1149       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
1150       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
1151    o pkg/ecco: cost function when applying pkg/smooth to controls
1152    o pkg/ctrl: add forcingPrecond run time parameter
1153    o pkg/seaice:
1154     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
1155     - fix bug in metric terms of u-equation in LSR solver (implicit part),
1156       changes verification/lab_sea
1157     - rearrange implicit part of u-equation in LSR solver to make it easier to
1158       read, understand, and debug. This causes changes at the truncation level.
1159     - fix (serious) bug in the boundary conditions (sign error in the implicit
1160       part) of the LSR solver. Changes all LSR results.
1161     - fixed problem with HSNOW initialization to avoid thick snow when AREA
1162       is initilized with small values - does not change lab_sea results.
1163     - added HsnowFile initialization capability
1164    o pkg/smooth: addition to model/src and pkg/ctrl so allow
1165     initialization of pkg/smooth and application to control vector
1166    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
1167    o dependencies: pkg/profiles requires pkg/cal
1168    o pkg/profiles:
1169     - added option ALLOW_PROFILES_GENERICGRID
1170         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
1171         that interpolation information (grid points and coefficients) is provided
1172         within the netcdf input files.
1173         -> sample matlab scripts can be found in MITgcm_contrib/gael
1174         that allow you to prepare netcdf input files.
1175     - also modified: cleaner include statements, cleaner error print statements,
1176       cleaner stops when error, and more tests of the netcdf input files consistency.
1177    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
1178    o pkg/seaice:
1179     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
1180       requires a new routine: seaice_diagnostics_fill.F
1181     - make sure that seaice does not move if not forced (pressure replacement
1182       method, Hibler and Ip, 1995), changes results
1183     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
1184     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
1185       It is turned off by default (=-1.), because it changes the results.
1186     - make it possible to read AREA from a file, too.
1187    
1188    checkpoint59c
1189    o add S/R and diagnostics for oceanic mixed-layer depth
1190    o move GMRedi call after all vertical mixing schemes (including KPP)
1191    o pkg/thsice:
1192     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
1193      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
1194    o pkg/obcs:
1195     - bug fix for balance code
1196    o pkg/seaice:
1197      - allow values of SEAICE_elasticParm > 1
1198      - add new parameter SEAICE_evpTauRelax as an alternative
1199        to SEAICE_elasticParm
1200      - make lsr boundary conditions free slip (by default), changes result
1201      - add code for no slip boundary conditions for lsr
1202      - set minimum of zeta to zero (and not 4e8) (changes results)
1203      - add a cap on AREA after advecting AREA if seaice_growth is not called
1204    o change calculation of Visbeck K:
1205      - no longer depend on tapering scheme; instead, compute slope (limited
1206        by GM_maxSlope). this is equivalent to what was comuted before with
1207        clipping or linear tappering.
1208      - fix vertical averaging (wrong by 1/2 level)
1209      - leave the old version (but will not be maintained) within
1210        #ifdef OLD_VISBECK_CALC / #endif
1211      - update output of exp. ideal_2D_oce
1212    o change error catch in calc_r_star to improve vectorization
1213    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
1214      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
1215    o adjoint:
1216      Re-organized adjoint checkpointing according to Matt Mazloff
1217      (but with modifs/completions/cleanups)
1218      Storing is now bundled into large arrays to optimized I/O
1219      (and second step in cleanup of the_main_loop)
1220    
1221    checkpoint59b
1222    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
1223      - export/import (between ocean & coupler) fields needed for ocean DIC.
1224    o pkg/seaice:
1225      - get rid of three more exchanges seaice_calc_viscosities (required
1226        different loop boundaries in seaice_lsr and seaice_ocean_stress)
1227      - bug fix in seaice_ocean_stress (update of lab_sea required)
1228      - reduce loop boundaries to necessary minimum also in seaice_evp
1229      - go back to the old way of computing deltaC/Z as the adjoint likes that
1230        better
1231    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
1232      passive tracer to an Age Tracer) + update output.txt
1233    o pkg/exf:
1234      - implement A-grid / C-grid selection for wind-stress input files.
1235      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
1236      for now, in exf_bulk_largeyeager04.F only :
1237      - change implementation for case where windspeed + 2. components wind-stress
1238        are read-in. AND use rhoConstFresh to convert evap.
1239    o pkg/seaice:
1240      - use correct EXCH_UV for wind-forcing (on A-grid).
1241      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
1242        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
1243    o pkg/exf:
1244      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
1245      EXF_INTERPOLATION:
1246      - merge global_with_exf/code version of exf_interp_read.F
1247        to the main code ;
1248      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
1249        reading the file ; Important: This options needs to be defined to recover
1250        previous code.
1251        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
1252      - no longer loose real*8 precision along the way when using exf_iprec=64.
1253    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
1254      - change discretisation of evp-solver in order to avoid another exchange
1255        (changes lab_sea) and clean up a little
1256      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
1257        help the adjoint (this also changes the results slightly)
1258      - add a few "_d 0" where they had been missing in seaice_evp.F
1259      - cleaning up: remove unused seaice_calc_rhs.F
1260    o pkg/exf: some cleaning-up:
1261      - change various "constants" into runtime parameters
1262      - cleaned-up Large&Yeager04 routine which should eventually
1263        replace exf_bulkformulae.F (changed names of S/R and CPP)
1264        and merged various ALLOW_ATM_WIND options
1265     only used with thsice pkg (in thsice_get_exf.F):
1266      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
1267        which are used when useStabilityFct_overIce=TRUE (= the default)
1268      - change default values of ice & snow emissivity and scale downward LW
1269        by ice & snow emissivity.
1270    o pkg/thsice:
1271     fix few little problems, in thsice_calc_thickn.F:
1272      - growth vertically (and not laterally) if iceFrac == iceMaskMax
1273      - melt only laterally if hIce < hThinIce (as the comments say)
1274      and in thsice_extend.F:
1275      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
1276      - start to form ice as soon as the minimum ice-volume is reachable.
1277     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
1278      and cpl_aim+ocn
1279    o pkg/kpp
1280     - move computation of surface related input fields to KPP into a new
1281       subroutine kpp_forcing_surf.F
1282     - remove wrong (within bi,bj loops) EXCH calls.
1283     - little cleaning (add argument myThid in last position, cvs header ...)
1284     - for now, fix conservation problem by exchanging KPPviscAz (may not
1285       be the best fix)
1286    o pkg/seaice
1287     - check for inconsistent evp parameter/cpp-flag combination
1288     - remove leftover errIO flat for obsolete name list error handling
1289    o OpenAD
1290     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
1291    
1292    checkpoint59a
1293    o pkg/seaice: some parameter clarifications and a little bit of clean up
1294    o pkg/thsice: rename run-time parameters:
1295       himin       -> hIceMin
1296       himin0      -> hThinIce
1297       hihig       -> hThickIce
1298       i0          -> i0swFrac
1299       transCoef   -> bMeltCoef
1300       frac_energy -> fracMelting
1301      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
1302       with default values (for now) that do not change the results.
1303      remove old version of thsice vars advection in pkg/seaice.
1304    o in FFIELDS.h:
1305      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
1306      - make pLoad & sIceLoad always available (but still only used if
1307         ATMOSPHERIC_LOADING is #define).
1308    o pkg/kpp: replaced _KPP_RL with _RL
1309    o bug fixes for vertical diffusivity computations when both KPP and
1310        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
1311        are no longer updating the vertical diffusivity array
1312        (passed as argument) but are (re-) setting those arrays.
1313    o pkg/seaice: fix bug in evp solver, while doing that
1314      - change (improve?) discretization of stress computations for both
1315        cgrid-lsr and evp solver
1316      - add a new routine to compute strain rates
1317      - the above changes lab_sea results
1318      - add no slip conditions for evp solver (off by default), lsr-version
1319        may follow
1320      - fix exchange for shear at Z-points (does not change lab_sea)
1321      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
1322        (to force the user to pick a time step since there is not "safe" way
1323        of choosing it)
1324      - add principal stress diagnostics
1325      - rearrange fields for evp a little to avoid having to call a: too many
1326        exchanges and b: exchanges for stress trensor components which we do
1327        not have.
1328      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
1329        of evp, complete rewrite for lsr case (latter is does not yet work
1330        in all cases)
1331    o pkg/kpp: add code to have mixing in shelf ice caverns
1332      - add myThid to all kpp routines (long overdue)
1333    
1334    checkpoint59
1335    o pkg/exf:
1336      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
1337        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
1338      - move exf header files from lower_case.h to UPPER_CASE.h ;
1339        add missing cvs Header & Name
1340      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
1341      - add namelist param. selectStressGridPosition, exf_monFreq
1342      - retire many _CLIM routines, and remove data.exf_clim
1343        + params moved to data.exf
1344        + climsst, climsss now handled by exf_set_gen, i.e.
1345          climss?period=0 refers to constant field,
1346          climss?period=-12 to monthly forcing
1347      - split up namelists in data.exf
1348    o pkg/seaice:
1349      - remove seaice_exch and seaice_exch_uv
1350      - remove superfluous exchange of theta
1351      - add myThid to seaice_budget_ocean/ice
1352      - add new interface for atmospheric wind forcing (C-grid only)
1353        + new routine
1354        + two new field (taux, tauy for stress over ice)
1355        + removed one global field (DAIRN) for C-grid case only
1356    o pkg/thsise
1357      - 2nd set of modifs for thsice adjoint in conjunction with exf
1358    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
1359    
1360    checkpoint58y_post
1361    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
1362      vertical diffusivity, similar to that in MOM4; turned on using
1363      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
1364      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
1365    o Added capability for 3D specification of background vertical diffusion
1366      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
1367      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
1368      "data" file that contains the 3D vertical diffusivity coefficients.
1369    o ice dynamics (pkg/seaice) with thsice thermodynamics:
1370      - add code within pkg thsice to advect & diffuse sea-ice fields
1371      similar to (and will replace) what has been added in  seaice_advdiff.F,
1372      but: - conserving Mass, Heat & Salt.
1373           - better when using non-linear advection scheme (not yet fully tested)
1374           - can also be used in atmospheric set-up (for now, only the diffusion).
1375    
1376    checkpoint58x_post
1377    o IO option for global-file compact format:
1378      - add options when generating topology (utils/exch2/matlab-topology-generator)
1379      - add I/O capability (pkg/mdsio).
1380      - adapt utils/matlab/rdmds.m to read this format.
1381      for now long-line format not yet supported by pkg/mdsio (& exch2).
1382    o shelfice: add a few diagnostics
1383    
1384    checkpoint58w_post
1385    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
1386      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
1387      (and replace horiVertRatio in NH code).
1388      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
1389                         and tutorial_plume_on_slope (sensitive to truncation)
1390    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
1391      directly to drive seaice model (C-grid only)
1392    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
1393     - reintroduce computation of wind from stress,
1394     - compute tau (in exf_bulkformulae.F) from windstress averaged to
1395       mass points to avoid tau = 0
1396     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
1397    o rdmnc.m: make it work with "global" files created with gluemnc
1398    o rdmnc.m : some improvements in dealing with singleton dimension
1399      (tested on all testreport mnc output files).
1400    o genmake2: disable pkg/profiles if netcdf test fails.
1401    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
1402    o move call to cal_readparms up to make calendar parameters/variable available
1403      to all packages
1404    
1405    checkpoint58v_post
1406    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
1407      useDynP_inEos_Zc tested.
1408    o pkg/exf: changes to properly interpolate/mask/scale initial fields
1409    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
1410      and portions thereof.  See read_cs.txt for description and examples.
1411    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
1412      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
1413      following the great-circle arc between those 2 points.
1414    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
1415      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
1416    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
1417     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
1418     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
1419     - still needs work (not working with some options ; efficiency to improve)
1420       and serious testing.
1421     - use this scheme for temperature & salinity in 2 advection test exp.:
1422       advect_xy & advect_xz, respectively.
1423    
1424    checkpoint58u_post
1425    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
1426    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
1427    o testreport: add option "-skipdir" to skip some test.
1428    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
1429      momentum calculation.
1430    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
1431    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
1432      remove checkpoint.F and the_correction_step.F (no longer used);
1433      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
1434    o add option (linFSConserveTr) to correct for tracer source/sink due to
1435      Linear Free surface
1436    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
1437    o pkg/thsice: fix reading mnc-pickups
1438    
1439    checkpoint58t_post
1440    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
1441    o pkg/mdsio:
1442     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
1443       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
1444       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
1445     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
1446     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
1447       either MDS_READ_FIELD or MDS_WRITE_FIELD )
1448     - new S/R (to replace MDSWRITEMETA), which allows to write more
1449       informations (variable names, time ...) to meta files.
1450     - modify rdmds.m to give back the meta file content.
1451    o pkg/diagnostics: change vertical interpolation to be safer, and more
1452       flexible (define p-levels to interpolate to in data.diagnostics);
1453      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
1454       diagnostic pointer.
1455    o pkg/seaice: more cleaning up of seaice_growth, added many comments
1456    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
1457    o fix multi-category seaice:
1458     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
1459       SEAICE_MULTICATEGORY
1460     - fix short wave heat flux
1461    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
1462       and allow to use EVP solver. Change forward lab_sea: test both EVP
1463       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
1464    o Initial check-in of lab_sea adjoint
1465      (very similar to natl_box_adjoint/code_seaice)
1466      * used C-grid and EVP solver
1467      * used KPP, GM/Redi
1468      * uses inAdExact=.TRUE.
1469      * gradient checks fail for both ADM and TLM
1470        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
1471        f.d. gradients actually seem more problematic than ADM, TLM gradients;
1472        issue is related to forward mismatch between g77 an ifort
1473    o pkg/seaice: overhaul of thermodynamics
1474     - growth.F and groatb.F are replaced by new routine seaice_growth.F
1475     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
1476     - move a few global fields out of SEAICE.h into seaice_growth.F and
1477       make them 2D (FICE/QNETO/ ...)
1478     - remove FO (it is the same as QNETO)
1479     - introduce a few local fields to avoid modifying external fields such
1480       as atemp, etc.
1481    
1482    checkpoint58s_post
1483    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
1484      changed exf_set_gen.F so that
1485        genperiod=0 means input file is one time-constant field and
1486        genperiod=-12 means input file contains 12 monthly means
1487    o CG2D: use pre-computed solver main-diagonal (stored in common block);
1488      this affects truncation error ; generate new output file for exp. which
1489      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
1490        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
1491        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
1492        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
1493        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
1494        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
1495    o start implementation of deep-atmosphere and anelastic formulation
1496    o verification: remove 2nd copy of input files and use script "prepare_run"
1497      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
1498    o mom_common/vecinv/fluxform: fix a few initialisation isssues
1499    o profiles: fix for multithreaded case
1500    
1501    o diagnostics: rename few diags:
1502      s/'PRESSURE'/'RCENTER '/g
1503      s/'TICE    '/'oceFreez'/g
1504      s/'TAUX    '/'oceTAUX '/g
1505      s/'TAUY    '/'oceTAUY '/g
1506      s/'SWFLUX  '/'oceQsw  '/g
1507      s/DIFx/DFxE/g
1508      s/DIFy/DFyE/g
1509      and add few ocean-forcing diagnostics:
1510      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
1511    o modifications to pkg/seaice/growth.F and budget.F, which change results of
1512      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
1513      as actual snow thickness.  It now refers everywhere to effective snow
1514      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
1515    
1516    checkpoint58r_post
1517    o modifications to pkg/seaice/growth.F, which change results of
1518      lab_sea experiment: fixes pertain to melting snow over open water, to
1519      masking EVAP under sea ice, and to using the correct AREA variable for
1520      computations of EVAP, PRECIP, HSNOW, and GHEFF
1521    o add ability to read bathy, salt, and theta using MNC (off by def)
1522    o add flooding algorithm and advection of HSNOW for pkg/seaice;
1523      both are turned off by default and do no change any results
1524    o seaice advection with pkg/thsice: a step toward the use of non-linear
1525      advection scheme, but #ifdef or commented out for now (requires more EXCH).
1526    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
1527      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
1528      in natl_box (affects results @ truncation level: update output.txt)
1529    o multi-threading and IO:
1530      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
1531      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
1532        (needed to work with SingleCpuIO): tested in all verif. exp.
1533    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
1534      affects the results (but none of the verification test uses this scheme).
1535    o Adding some pkg/diagnostics capability to pkg/seaice
1536      (will certainly be subject to changes)
1537    o ctrl: adding new control variables:
1538      lwflux, lwdown, evap, snowprecip, apressure, runoff
1539    
1540    checkpoint58q_post
1541    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
1542      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
1543      high_res_cube configuration by 4% on Columbia.
1544    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
1545      add (in global_with_exf/code) a version of EXF_INTERP_READ without
1546      dynamical allocation (seems to work in multi-threaded).
1547    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
1548      single CPU io) so that TAF does not have to see EESUPPORT.h
1549    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
1550    
1551    checkpoint58p_post
1552    o obcs: stop if obcs is used with useCDscheme = .true.
1553    o shelfice:
1554     - fix a sign error so that no slip at shelfice interface works
1555     - remove stop for combination non-hydrostatic code and shelfice. That does
1556       not mean, that the results are correct, but at least they are numerically
1557       stable
1558    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
1559    o added adjoint exch routined for all exch*3d* routines
1560      and updated flow directives
1561    
1562    checkpoint58o_post
1563    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
1564      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
1565    o change controling S/R for writing pickup file (new S/R do_write_pickup)
1566      and clean-up reading/writing of pickup files.
1567    o fix local version of read/write pickup (NH part) in rotating_tank/code
1568    o simplify EXCH interface:
1569     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
1570     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
1571    o added the regrid package
1572    o shelfice:
1573     - add a simple boundary layer scheme to reduce noise
1574     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
1575    
1576    checkpoint58n_post
1577    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
1578       local variable (not in common block).
1579    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
1580      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
1581      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
1582        to work with SingleCpuIO.
1583    o add "_d 0" to real constant of pkg/cfc subroutines ;
1584       update exp. cfc_exemple & tutorial_cfc_offline output files.
1585    o multi-threading and IO:
1586      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
1587        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
1588      - barrier before and after reading.
1589      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
1590      - avoid using MDS_WRITELOCAL for LAND pkg output.
1591      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
1592        common-block variables ; Allows multi-threading with master-thread IO.
1593    o change default MAX_NO_THREADS from 32 to 4 ;
1594      and stop cleanly when MAX_NO_THREADS is too small.
1595    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
1596    
1597    checkpoint58m_post
1598    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1599       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1600    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1601       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1602       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1603    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1604        add MITgcm_tutorials (= code + all the tutorials)
1605    o ecco, option to compute cost for total ssh (mean+anom)
1606    o consistent with addition of ptracer and ssh in pkg/profiles
1607    o profiles: adding ptracer and ssh
1608    o testreport: change multi-test output-file name
1609      (from output.txt.{name} to output.{name}.txt)
1610    o profiles: now ok for mutli-tiles case
1611    o seaice: add 4 parameters for different advection schemes for area,
1612      (effective) seaice thickness, enthalphy, and snow height. Their default
1613      is the standard parameter SEAICEadvScheme
1614    o calc_gw:
1615     - add cosFacU in zonal viscous flux (harmonic.visc.).
1616     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1617       of tutorial_plume_on_slope.
1618    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1619    o calc_gw: true flux-form, account for horizontal grid spacing.
1620      update rotating_tank results, but not plume_on_slope (affected at
1621      truncation level, 11 digits).
1622    
1623    checkpoint58l_post
1624    o calc_gw:
1625     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1626     - remove side-drag for now (need to fix it); update plume_on_slope results.
1627     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1628    o commit code to make SST/SSS weights spatially variable
1629      (based on either variable in-situ or variable initial T/S weights)
1630    o pkg/ecco:
1631      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1632        now based on horizontally varying weights wthetaLev, wsaltLev
1633      * cost_averagesflags now returns year indices in addition to day, month
1634      * sflux balance is performed on annual basis
1635        (sflxumm, sfluxmm2, bal_sfluxmm)
1636      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1637        including separate counting and multipliers
1638    o pkg/rbcs
1639      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1640    
1641    checkpoint58k_post
1642    o testreport:
1643     - always build in dir. "build" (if not there, mkdir build instead of building
1644       & running in input)
1645     - run in dir run (if it exists), in build otherwise.
1646     - call prepare_run (if input/prepare_run exists)
1647     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1648    o pkg/exf modifications to interpolation and rotation routines for more
1649       reasonable treatment of North Pole singularity: for tracers North Pole
1650       value is set to northernmost zonal-mean value, for zonal velocity it is
1651       set to zero, and for meridional velocity it is set to northernmost value.
1652    o pkg/exf/exf_check_range.F
1653     - add tile index to diagnostics and move stop statement to the very
1654       end of the routine.
1655    o pkg/diagnostics: (diagnostics_main_init.F)
1656      define title of isomorphic variables according to the current config.
1657    o pkg/thsice with pkg/seaice dynamics:
1658    - fix domain of computation (interior only, required for exf) and do exchanges
1659    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1660    o towards a standard way of dealing with multi-threading in MONITOR
1661      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1662    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1663       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1664    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1665    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1666    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1667       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1668    o tracer advection:
1669     - clean-up and simplify calc_common_factors.F
1670     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1671       advection subroutine (but still not used within DST advection S/R)
1672    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1673    
1674    checkpoint58j_post
1675    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1676      from file (collects calls previously in FORWARD_STEP)
1677    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1678    o adjoint store dir. adjusted accordingly
1679    o genmake2
1680      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1681    
1682    checkpoint58i_post
1683    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1684      on wind stress (SEAICEstressFactor defaults to 1.)
1685    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1686      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1687    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1688      on CS-grid: no longer loosing mass.
1689    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1690    o pkg/ggl90: fix sloppy output and fix a bug
1691    o pkg/seaice: added SEAICEuseEVPpickup parameter
1692      - Set to false in order to start EVP solver with
1693        non-EVP pickup files when using SEAICEuseEVP
1694      - fix sign error in diffusion in seaice_calc_rhs
1695    
1696    checkpoint58h_post
1697    * Modifications for bottom topography control
1698      o replace hFacC by _hFacC at various places
1699      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1700      o add non-self-adjoint cg2d_nsa
1701      o update autodiff support routines
1702      o re-initialise hfac after ctrl_depth_ini
1703      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1704    * Adding verification for 5x5 box (4-layer) bottom topography control
1705    
1706    checkpoint58g_post
1707    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1708       used for mean seasonal cycle, mean diurnal cycle); add an example
1709       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1710    o pkg/ggl90:
1711      - add parameter (minimum surface kinetic energy)
1712      - fix bug (avoiding division by zero)
1713    o couple pkg/thsice to pkg/seaice:
1714      - modify advection in seaice to accomodate new scalar fields to be advected
1715      - only muliDimAdection scheme work with seaice/thsice
1716      - mapping of thsice-variables to seaice-variables, back and forth
1717      - does not break the verification experiments, but does not give the
1718        desired results either
1719    o pkg/seaice
1720      - make (default) second order advection a bit less confusing?
1721    
1722    checkpoint58f_post
1723    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1724      to pkg/seaice):
1725      - new routines thsice_map_exf and thsice_get_exf provide the interface
1726      - add an additional formal parameter to thsice_solve4temp
1727    o pkg/exf:
1728      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1729      - correct Stefan-Boltzmann constant
1730      - new parameter for longwave surface emittance
1731      - separate some stuff from exf_bulkformulae into new routines  
1732        exf_radiation, exf_wind
1733      - add new parameters and constants: longwave emissivity for ocean, ice
1734        and snow, evaporation parameters over ice
1735      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1736        either wind from stress or stress from wind
1737    o pkg/thSIce:
1738    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1739    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1740       and THSICE_CALC_THICKN
1741    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1742    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1743      to make debugging easier.
1744    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1745    o pkg/bulk_force:
1746      - clean-up comments and parameters ;
1747      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1748    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1749      generate new output for test-experiment: aim.5l_cs.thSI
1750    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1751      testreport accordingly
1752    
1753    checkpoint58e_post
1754    o SEAICE_CGRID adjoint done
1755    o R_STAR adjoint implemented.
1756      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1757      * need to sort out init. of h0facc, etc.
1758    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1759      to be able to use it in pure forward.
1760    
1761    checkpoint58d_post
1762    o upgrade simple test-experiment to tutorial example:
1763     step.1: duplicate the experiment and (step.2) will remove the old copy.
1764      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1765      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1766      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1767      tutorial_global_oce_biogeo    <- copy of dic_example
1768      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1769      tutorial_plume_on_slope       <- copy of plume_on_slope
1770      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1771      tutorial_global_oce_optim     <- empty for now (David ?)
1772      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1773     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1774    o correct a sign problem in cost_scat.F
1775    o obcs and ptracers: fix boundary conditions for advections schemes
1776      with larger stencil
1777    o thsice adjoint: start
1778    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1779      completeness
1780    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1781      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1782    o ptracers adjoint:
1783      * avoid extensive recomputatations
1784      * fix missing re-init. of gptr (missed by TAF)
1785    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1786      me to turn off the excessive output to STDOUT that this package produces
1787    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1788      and add those terms in Vector-Invariant formulation.
1789    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1790      if the control period (xx_hfluxperiod etc) is 0
1791    o in profiles pkg, clean routines and fix details
1792    o in ecco pkg, reading ssh data:
1793      fix problem in case the model does not start at iter0=0
1794    o fix mnc-pickup/restart for ptracers
1795    o new package prifiles:
1796      code to compute profile-based cost by Gael Forget
1797      (modifs in ecco, ctrl, autodiff)
1798    o Benign bug fix in initialization (spotted by M. Mazloff) of
1799      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1800    
1801    checkpoint58c_post
1802    o adjoint: finish NLFS adjoint and provide reference output in
1803      verification/global_ocean.90x40x15/results_ad_nlfs
1804    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1805      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1806      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1807      with SEAICE_CGRID defined.
1808    o move calendarDumps from "data" to "data.cal" and clean-up the code
1809      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1810    o add useEXF & useCAL flags (for now, set in hard-coded way)
1811    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1812      (were missing in NH mode, and wrong in quasihydrostatic mode).
1813      waiting for Chris updated version of calc_gw to add those CALLs.
1814    o fix bug in quasihydrostatic S/R ;
1815      add a test for this option: global_ocean.90x40x15.qshyd
1816    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1817      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1818    o add on/off flag useOffLine for package OFFLINE
1819    o seaice:
1820      - modify advection so that it works also on the C-grid
1821      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1822        problem in multi-tile runs with C-grid
1823      - add flags for clipping ice velocities and/or masking solver forcing
1824      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1825        C-grid solver
1826      - added a few comments to seaice_diffusion.F
1827      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1828        are now exclusive)
1829      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1830        required re-ordering the code a little:
1831       + make DAIRN global variable (defined in SEAICE)
1832       + move computation of the viscosities eta and zeta into a new separate
1833         routine (because I need to recompute them in seaice_ocean_stress.F)
1834    
1835    checkpoint58b_post
1836    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1837      update output.txt of exp. aim.5l_cs.thSI
1838    o various mnc cleanups and improvements:
1839      + shrink lookup tables by factor of ~4
1840      + better error reporting when running out of lookup space
1841      + able to handle longer path/file names (up to 500 chars)
1842    o adjoint:
1843      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1844      - TBD: "hidden" mom_vecinv recomp. in dynamics
1845    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1846     (allow to differentiate between forcing components using new integer flags:
1847      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1848     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1849    o ecco
1850      - enable trend removal from SSH anomaly obs.
1851    o adjoint
1852      - a fix for PmEpR when #undef EXACT_CONSERV
1853      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1854      - try to fix "hidden" recomp. in forward_step for NLFS
1855        (NLFS seems broken sometimes after I checked it in)
1856    o seaice:
1857     - add c-grid version of the dynamic solver:
1858       + three new routines that are the c-grid substitute lsr, dynsolver
1859         and ostres
1860       + put a few fields that were local to dynsolver into global common
1861         blocks, so that I can move the computation of stresses etc into
1862         seaice_lsr (saves coding but may break the adjoint).
1863     - replace more hardwired parameters by runtime parameters
1864     - add ice masks that mask the rhs of the implicit solvers where there
1865       is no ice (commented out in seaice_dynsolver, because i am not sure
1866       if this works properly), eventually this should replace the clipping
1867       of ice velocities in seaice_dynsolver to +/-40cm/s.
1868    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1869      include it only where its needed
1870    o move balancing of fluxes before the call of external_forcing_surf
1871    o seaice:
1872      - correct units of turning angles (now they are really in degrees)
1873      - move computation of GWATX/Y out of main routine into dynsolver
1874      - initialize GWATX/Y in seaice_init
1875    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1876      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1877    o seaice: add runtime flags for turning angles (default to zero)
1878    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1879      and trend from exf forcing and ctrl control adjustments
1880    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1881      (since checkpoint57x_post)
1882    o change the default rotation period to 86164.s = the Earth rotation
1883    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1884      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1885    o seaice advection: add code for choosing between the default (2nd order
1886      central differences) and multiDim advection schemes provided by
1887      pkg/generic_advdiff
1888    o seaice:
1889      - removed all references to SEAICE_GRID.h fields from
1890        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1891        (cubed-sphere configuration will change a little)
1892      - grid computations in seaice_init are obsolete now.
1893      - cleaned up code a little so that is easier to read (hopefully).
1894      - added new (better?) discretizations of default advection and diffusion
1895        (turn on with SEAICEuseFluxForm)
1896      - replace 1 in 3d global fields by kSurface in growth.F
1897      
1898    checkpoint58a_post
1899    o seaice:
1900      - bug fix in advect.F
1901    o shelfice:
1902      - separate shelfice load anomaly from pload (breaks with time
1903        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1904        Its default is 0., but it may be computed more cleverly from (unknown)
1905        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1906        done offline. A good approximation of the pressure load anomaly is
1907        necessary to avoid large initial adjustment processes underneath
1908        deep-reaching shelfice.
1909      - small fix in ISOMIP shelfice_thermodynamics
1910      - add more sophisticated thermodynamics of Hellmer (1989), this is
1911        now the default
1912      - give a few constants more intuitive names
1913    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1914      if bulk formulae are used in long integration (especially EmPmR). Turn
1915      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1916      if balancePrintMean, the imbalance that is substracted is printed to
1917      STDOUT.
1918    o fix bug (typo) in obcs_apply_eta.F
1919    o add a new package shelfice which enables us to model the circulation
1920      underneath shelf-ice with draughts of hundreds of meters.
1921     - works
1922     - to do: + include improved thermodynamics
1923              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1924                instead of new field kTopC
1925              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1926                instead of new field R_shelfIce and new code in ini_depth.F
1927                and ini_mask_etc.F?
1928              + adjust vertical mixing schemes?
1929    o seaice pkg:
1930     - add a cpp-flag to include a simple formula for a salinity dependent
1931       freezing point of sea water at the surface
1932     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1933       meridional stresses are now different (and hopefully correct)
1934    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1935       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1936       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1937    o pkg/diagnostics: add options and parameters for regional-statistics
1938       diagnostics ; define regions by reading a region-mask from a file
1939       (might add other options later)
1940    o pkg/bulk_force:
1941     - add option and parameters to use AIM surface-flux formulae.
1942     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1943       others forcing fields (defined in PARM05, parameter file "data") are loaded
1944       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1945     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1946     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1947     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1948       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1949     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1950    
1951    checkpoint58
1952    o add "--embed-source" option to genmake2 which, when the supporting
1953      tools can be compiled (as determined by genmake2) will turn on the
1954      embed_files package which then embeds the entire MITgcm source code
1955      (*.[fFhc] + Makefile) used for the build within the executable
1956      - requested by CNH but off by default
1957      - adds a paltry <9MB to the mitgcmuv executable in most cases
1958      - only writes the output when useEMBEDSRC in eedata is true
1959    o clean up 3-dim. relaxation codes:
1960      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1961      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1962      * Thanks to Tom Haine for testing!
1963    
1964    checkpoint57z_post
1965    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1966      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1967    o fix the pickup behavior for obcs in combination with ptracers
1968    o fix a bug in ptracers_external_fields_load
1969    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1970      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1971    o transfered surface NH pressure to eta field (if exactConserv).
1972    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1973         and update lab_sea output.txt file.
1974    o completing 3-dim. relaxation code: additional term
1975         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1976      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1977      * At compile time, in "EXF_OPTIONS.h" set
1978          #define  ALLOW_CLIMTEMP_RELAXATION
1979          #define  ALLOW_CLIMSALT_RELAXATION
1980      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1981          tauThetaClimRelax3Dim = 15552000.0,
1982          tauSaltClimRelax3Dim  = 15552000.0,
1983      * 3 cases:
1984          1) Use a constant-in-time 3-dim. field
1985          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1986          3) Real-time relax. to time-evolving prescribed field
1987    o Adding Laplacian-type smoothness constraint on
1988      initial and boundary (forcing) controls (ic, bc)
1989      * enable at compile-time via
1990        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1991      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1992      * Absolute scale somewhat unclear so far
1993      * no area weighting was included since no other cost term does so far
1994    
1995    checkpoint57y_post
1996    First step for a NLFS adjoint
1997    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1998    o new init. routines for calc_r_star, calc_surf_dr
1999    o still need to deal with ini_masks_etc
2000    o testreport seemed happy
2001    checkpoint57y_pre
2002    
2003    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
2004    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
2005    o add new offset feature to offline pkg (plus minor cleanup)
2006    o cfc fixes for final year of integration
2007    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
2008      be in GCHEM_OPTIONS).
2009    
2010    checkpoint57x_post
2011    o fix testreport Pb in multiple test experiment.
2012    o cleanup our namelist syntax in verification:
2013      - make it more F95 standards compliant (some work still needed)
2014      - allows the vast majority of our tests to work with gfortran
2015    o Non-Hydrostatic:
2016     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
2017     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
2018    o Allow to apply AB on T,S rather than on AB(gT,gS):
2019     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
2020     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
2021       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
2022     - need a "clever" read_pickup to restart from the other AB formulation
2023    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
2024    o remove some unused variables (reduces number of compiler warnings)
2025    o adjoint
2026      * Disable useVariableViscosity for adjoint for time being
2027        (there are a number of extensive recomputations)
2028      * Initialize certain variables needed for adjoint
2029    
2030    checkpoint57w_post
2031    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
2032                 fix the singleCpuIO RS version of MDSWRITEFIELD
2033       and add a WARNING if using globalFiles=T with multi-processors.
2034    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
2035      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
2036    o tracer advection scheme:
2037      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
2038       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
2039       was not very convenient).
2040      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
2041       (further tests needed for the implicit DST & Flux-Limiter schemes).
2042    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
2043      and sRef for convenience, handy, when you want to initialize
2044      ptracers in a large domain with a constant non-zero value. Also,
2045      untangle ptracers_init.F a little.
2046    
2047    checkpoint57v_post
2048    o change dome exp. to use variable viscosity in side-drag terms.
2049    o remove all the files from the cfc_offline test since they are now
2050      incorporated into tutorial_cfc_offline which has been producing
2051      identical results for a few days of testing
2052    o add new parameter: sideDragFactor to enable half-slip-side BC
2053      and change side-drag S/R to use viscosity from mom_calc_visc
2054      (can switch back by setting sideDragFactor=0.); affects results at
2055      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
2056       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
2057    o vorticity & strain are now computed without masking, to account for
2058      no-slip-side BC in variable viscosity calculation ; mask is applied
2059      anyway later on, before computing advection/coriolis terms.
2060    o modify exp4 to test new obcs support for reading from external files
2061      and for passive tracers
2062    o fix behavior of ptracers_monitor when monitor output is written to a
2063      netcdf-file; still not independent of monitor.F (writes in the same
2064      file).
2065    o change default value of tRef (put a uniform, meaningful value for ocean
2066      & atmos) and initialize sRef (was missing, as Martin mentioned).
2067    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
2068      to be proportional to enstrophy dissipation length.  Thus,
2069       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
2070      This is now consistent with Smagorinsky and with the manual.
2071    
2072    checkpoint57u_post
2073    o OBCS and PTRACERS: add open boundary support for passive tracers
2074      - either use homogenous (pseudo) v.Neumann conditions or prescribe
2075        OB-values from file; this is not different from the way theta and salinity
2076        are treated
2077      - however, Orlanski-radiation conditions are not supported, and the model
2078        will stop if you use pTracers and Orlanski at the same time.
2079      - beefed up the rountine obcs_external_fields_load: now only those open
2080        boundary values are overwritten with values from files for which there
2081        are really files, otherwise the OB-fields remain untouched. This makes
2082        it possible to use different OBs at different ends of the domain (as
2083        with EXF)
2084    o reduce number of exch calls in shap_filt (s2).
2085    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
2086      truncation level) 4/5 MLAdjust test results (11&12 digits match).
2087    
2088    checkpoint57t_post
2089    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
2090    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
2091      same truncation, independent of the face number: affects affects several
2092      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
2093    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
2094      note that biharmonic viscosity + no-slip was not tested in any experiment.
2095    o fix bug in non-linear free-surf side-drag ; generate new output for
2096      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
2097    o make mnc honor the writeBinaryPrec flag for most kinds of output
2098    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
2099    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
2100      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
2101    o add brackets in multi-terms sum to get same truncation, independent of
2102      the face number (manage to get exactly same value of gU,gV at the cs-edge)
2103      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
2104    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
2105      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
2106      a maximum grid-scale Reynolds number.  Also, changes all length calculations
2107      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
2108      Suggested values of viscosity parameters found in mom_calc_visc.
2109      Many new viscosity diagnostics available.
2110    
2111    checkpoint57s_post
2112    o Add clearing-house for viscosity calculations, mom_calc_visc and
2113      correct numerous bugs in LeithD and Smagorinsky discretizations.  
2114      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
2115      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
2116      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
2117      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
2118      The Strain-Tension form is now called with useStrainTensonVisc=.true.
2119      ViscAhStrain and viscAhTension are now retired.
2120    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
2121    o In response to JMC's bug report, genmake2 now ignores any soft-links
2122      that it finds in the *current* directory when searching for files.
2123      Soft-links found in any other source directories will still work as
2124      they did before.
2125    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
2126      a C routine to unlimit the stack size
2127    o mnc-ify pkg/aim snapshot vars
2128    o mnc-ify pkg/land as requested by Daniel
2129    o various changes to mnc including:
2130      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
2131      - output can now be grouped so that all files within a group
2132          change the ITER portion of their names in lock-step together
2133      - can now read ("global") PER-FACE (in addition to PER-TILE) files
2134          and works with both EXCH1 and EXCH2 (but needs more testing)
2135      - writing works for all verification test cases w/ g77 on Linux
2136    
2137    checkpoint57r_post
2138    o make MNC variable initialization happen earlier
2139    o add diagnostics for (almost) each term of the momentum Eq.
2140    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
2141    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
2142    o remove MINIMAL_TAVE_OUTPUT option ;
2143      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
2144    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
2145      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
2146    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
2147    o add time-dependent SST, SSS control
2148    o cost terms in ecco/ modularized (new cost_generic.F)
2149    o cost_averages routines are modularized (new cost_averagesgeneric.F)
2150    o new infrastructure for seaice model vs. obs misfits in seaice/
2151      * driver from the_main_loop.F is seaice_cost_driver.F
2152      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
2153      * gradient check in Exp. 6a of natl_box_adjoint/
2154    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
2155      (see README file)
2156    
2157    checkpoint57q_post
2158    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
2159    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
2160      - bug was reported by Jean-Michel and Ian Fenty
2161    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
2162      update exp. cpl_aim+ocn output.
2163    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
2164      Needed for high-res. runs with large global files
2165      to be able to limit tapelev size
2166    o Changed some tests for adjoint:
2167      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
2168      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
2169      * global_ocean.90x40x15/ back to default 3-level checkpointing
2170    o Modifications to enable scripted COMMON to MODULE conversion
2171      * verification/OpenAD/code/ has necessary scripts and description;
2172      * converts, compiles and runs successfully;
2173    
2174    checkpoint57p_post
2175    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
2176    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
2177      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
2178    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
2179    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
2180      (was already the case for dissipation with mom_vecinv,
2181       and also the case for grad.PhiHyd when staggered-timeStep)
2182      This will allow to put dissipation out-off the AB time-stepping.
2183     Unfortunately, affects truncation error. Update output of exp. that "fails"
2184      (cg2d matching number) and leave the others for later: front_relax(10),
2185      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
2186      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
2187    
2188    checkpoint57o_post
2189    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
2190      (2) its ready to be documented during the 20050801 DocFest
2191    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
2192      for ideal_2D_oce and lab_sea on linux_ia32_g77
2193    o set to #undef CTRL_SET_OLD_MAXCVARS_30
2194      in global1x1_tot/code_seaice_adj to access indices 32, 33
2195      (worth another tag)
2196    
2197    checkpoint57n_post
2198    o adding precip control xx_precip 32
2199    o adding swflux control xx_swflux 33
2200    o Replacing 10 forcing penalty cost routines by 1 generic.
2201    o Implementing partitioning in time-mean and variable adjustment
2202      for atmos. state.
2203    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
2204    o in natl_box_adjoint:
2205      * updated exp 1 to 10
2206        (but does not have time-mean vs. variable split results yet)
2207    o updated global1x1/*_seaice_adj/
2208      to incorporate latest changes
2209    o enable useSingleCpuIO for mdsio vector routines
2210      (applies in particular to tapelev I/O)
2211    o removed inefficient K-loop in all active_file*control*.F
2212    
2213    checkpoint57m_post
2214    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
2215      and advect_cs (use EXCH-2 and standard cs-32 grid files).
2216    o pkg/exch2: filling of face-corner halo regions is optional
2217      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
2218    
2219    checkpoint57l_post
2220     tag before updating tutorials (pre-release-2)
2221    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
2222       for output and interpolation of input fields onto model grid)
2223    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
2224       Affects results of exp. rotating_tank ; update output.txt.
2225    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
2226          and taking the square quantity and/or using a fraction-weight field.
2227    o fix aim_diagnostics_init.F mate numbers.
2228    o add mnc output capability to diagnostics/diagstat and update
2229      our cvsignore files for the ACSII output generated
2230    
2231    checkpoint57k_post
2232    o lab_sea now uses diagnostics package and provides a suite of
2233      new EXF diagnostics output.
2234    
2235    checkpoint57j_post
2236    o exf
2237      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
2238        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
2239        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
2240      * extended diagnostics output
2241        - now includes all EXF variables
2242        - hs, hl moved to common block
2243        - separate S/R for diagnostics, called after ctrl vector is added
2244        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
2245        - EXFqnet contains true Qnet (i.e. includes qsw)
2246      * updated verif. lab_sea, global_with_exf
2247      * Rearranging hflux (exf_mapfields -> exf_getforcing)
2248        to ensure that diagnostics sees a true EXFqnet
2249    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
2250    o diagnostics pkg: change pointers so that 1 diagnostic can be used
2251      several times with different frequencies.
2252    o mnc-ify the thsice package as requested by Daniel Enderton
2253      - the monitor--MNC output needs work
2254      - many attributes need to be added (most are currently blank)
2255    o mnc-ify theaim_v23 package as requested by Daniel Enderton
2256      - many attributes need to be added (most are currently blank)
2257    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
2258    o add Sadourny like discretization to the 4th.O vorticity advection scheme
2259    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
2260      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
2261         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
2262    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
2263     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
2264    
2265    checkpoint57i_post
2266    o Diagnostics package was changed: diagnostic allocation is now deactivated
2267      by setting an empty file name in the namelist (used to be by setting 0 frequency)
2268    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
2269      add 1rst Order upwind vertical Shear.
2270    o add a quick fix for A/B checkpointing in OFFLINE mode
2271    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
2272      end-run around the C/Fortran linking horror in eesup/src/timers.F
2273    o added pkg/runclock: allows user to terminate run based on wall clock
2274    o added non-hydrostatic scaling parameter: nh_am2
2275    o pkg/my82: futile attempt to make results compiler-independent by adding
2276      some "_d 0", etc. no effect.
2277    o for mnc output, fill the 'T' coordinate var with myTime and create a
2278      separate 'iter' variable for iteration count
2279    o pkg/diagnostics:
2280      add new capability: output of Global/Regional & per-level statistics ;
2281      tested against monitor output (including land & thSIce) on various exp.
2282    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
2283    
2284    checkpoint57h_done
2285      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
2286      data.diagnostics, data.gchem, data.ptracers) is done.
2287    
2288    o pkg/diagnostics: prepare for Global/Regional statistics.
2289      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
2290    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
2291      and rename it: DIFFERENT_MULTIPLE
2292    
2293    checkpoint57h_post
2294    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
2295    o pkg/diagnostics: change output frequency, now in seconds (instead
2296      of Nb of iterations). This requires to change data.diagnostics.
2297    checkpoint57h_pre
2298    
2299    o in mnc, let the user create the output dir if both mnc_outdir_date
2300      and mnc_outdir_num are false
2301    o add fflags() to pkg/diagnostics which allows one to specify, on a
2302      per-file basis, the file precision [default behavior is unchanged]
2303    o added diagnostics to pkg/kpp, including computation of mixed layer
2304      depth based on a temperature/density criterion
2305    o updated verification/natl_box to test the new pkg/kpp diagnostics
2306    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
2307    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
2308    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
2309      not mnc -- this mistake was found by JMC and is now corrected
2310    
2311    checkpoint57g_post
2312    o add Adams-Bashforth 3rd Order time stepping:
2313      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
2314      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
2315    checkpoint57g_pre
2316    
2317    o make lambda[Theta,Salt]ClimRelax spatially varying
2318      (default remains spatially uniform constant based on tau)
2319    o added new control variables
2320      * init. uVel, vVel, etanN
2321      * lambda[Theta,Salt]ClimRelax
2322    o separate masks used for ctrl_pack/unpack 'from write_grid' output
2323      (suggested by G. Forget)
2324    
2325    checkpoint57f_post
2326    o add parameter "baseTime" = model base time = time at iteration zero
2327      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
2328      account for baseTime shift
2329    o move Coriolis arrays from PARAMS.h to GRID.h
2330    checkpoint57f_pre
2331    
2332    o mnc-ifying the seaice package
2333    o introduced an alternative length scale calculation for use in the limiting
2334      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
2335    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
2336    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
2337      as well as grad(vort3).  Made it compatible with both approximate form
2338      for the cubed sphere and full form of these gradients.  Added flag
2339      useFullLeith to select between approximate and full form.  
2340    o add "d0" in getcon.F to reduce differences between compilers/platforms
2341      update output.txt of exp. fizhi-gridalt-hs
2342    o change port_rand funtion to allow to set the seed.
2343    o fix obscure MNC bug involving conversion between reals and integers
2344      - it caused no problems with certain (eg. gcc, ifc) compilers but the
2345        new version is now more standards-compliant
2346    o adjoint-related modifications
2347      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
2348      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
2349      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
2350    
2351    checkpoint57e_post
2352    o Adding eddy stress controls a la Ferreira et al.
2353    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
2354    
2355    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
2356      update output.txt of exp. fizhi-gridalt-hs
2357    o add more "Z" dimensions and associated coordinate vars to MNC
2358    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
2359    o parameter calendarDumps: when set, approximate months (30-31 days) and years
2360      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
2361      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
2362      months and years.  Requires pkg/cal.
2363    o diagnostics: add pickup functionality
2364      - off by default for backwards compatibility
2365      - current version only uses MDSIO -- MNC will be added
2366    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
2367    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
2368    
2369    checkpoint57d_post
2370    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
2371    o modify verification/ideal_2D_oce so that it tests the creation of mnc
2372      output from the diagnostics package
2373    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
2374    o make genmake2 more portable by using ".$FS" instead of ".f" for more
2375      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
2376    o add coordinate variables to the MNC output from the diagnostics package
2377    o change MNC-flags default value: true when useMNC=TRUE
2378    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
2379      the ability (off by default) to read the grid information using MNC
2380    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
2381    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
2382    o do snap-shot diagnostics at the middle of the time-interval (instead of
2383      at the end).
2384    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
2385      new test for AIM with thSIce + slab-ocean
2386    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
2387    o move state variable diagnostics to the beginning of the time step ;
2388      (note: still needs some work specially for snap-shot diagnostics)
2389      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
2390    
2391    checkpoint57c_post
2392    o Change testing option (-ieee) to get closer agreement between g77 & ifort
2393    o generate new output.txt files on faulks with g77 & the new -ieee option
2394    checkpoint57c_pre
2395    
2396    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
2397      update output.txt of exp. global_ocean.90x40x15
2398    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
2399      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
2400    o add saltFlux(+File) forcing capability with periodicExternalForcing
2401    o allow to use pkg diagnostics for GM-Redi & ThSIce output
2402    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
2403    o improvements for the MNC output from DIAGNOSTICS:
2404      - correct handling of the unlimitied dimension
2405      - all dims now have associated coordinate variables
2406      - variables located at U, V, and Corner ("Z") points are now written
2407        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
2408        *all* data points are output
2409    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
2410    o added pkg/seaice/seaice_monitor.F
2411    o mdsio_readfield.F can now read files visible only to master MPI process.
2412    o pkg/seaice: some test code for ice-modified ocean stress
2413    o exf_getffields interpolation defaults to bilinear for all scalar forcing
2414      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
2415      spurious negative numbers for precipitation and humidity.  Will cause
2416      some small numerical differences for integrations using pkg/exf/exf_interp.F.
2417    o pkg/ctrl/
2418      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
2419        May be enabled via doPackDiag
2420      *  introduce z-scaling of
2421         + gradient (doZscalePack) and
2422         + control (doZscaleUnpack)
2423    o pkg/mdsio/
2424      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
2425      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
2426    
2427    checkpoint57b_post
2428    o simplify options in diagnostics_fill arguments (remove weird combinations)
2429    o fix MNC coordinate variables so that they now contain per-face index
2430      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
2431      general, EXCH2 grids are only aligned to a "local" coordinate system
2432    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
2433    o Implement instantaneous output within pkg diagnostics:
2434      setting a negative frequency in data.diagnostics produces
2435     "snap-shot" output (as opposed to time-average if freq > 0)
2436    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
2437      NOTE: change ptracer diagnostics name: use 2 characters to work with
2438            more than 9 tracers. Add also diagnostics of advect & diffus flux.
2439    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
2440      becomes the coordinate variable for the 'T' dimension
2441    o add CF-style coordinate variables to MNC
2442      - just a first cut:  numbers are meaningless on the cubesphere and
2443        missing along the T axis but otherwise it works!
2444    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
2445    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
2446    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
2447      this is based directly on what the model compute, so that the content of
2448      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
2449    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
2450    o clean up build options files for SunOS, in particular
2451      - remove -traditional from xmakedepend
2452      - change -xarch=v9 to -xarch=native for f77
2453      - restore use of make (not gmake)
2454      - add CC=gcc if using g77
2455    o changes per discussion of AM, JMC, & EH3 today:
2456      - move redundant "grid" variables out of "state" -- in preparation of
2457        creating proper CF-style coordinate variables and in recognition
2458        that any/all grid variables can be easily copied (eg. w/NCO) from
2459        the grid files into any of the other NetCDF files
2460      - *always* output grid variables with MDSIO (this will eventually be
2461        changed)
2462      - output MNC grid file if useMNC is true
2463    o every instance of _END_MASTER() has been found and replaced with
2464      _END_MASTER( myThid ) in order to satisfy certain picky Sun
2465      preprocessors
2466    o re-arrange diagnostics pkg initialisation:
2467     - allow each package to extend the available diagnostics list
2468     - add some checking and fix small problems (multi-threaded, ...)
2469     - new S/R diagnostics_fill (replace fill_diagnostics):
2470       look through the short list of active diag. (instead of the long list)
2471       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
2472    
2473    checkpoint57a_post
2474    o this set of changes restores TAMC compatibility
2475      tested for global_ocean.90x40x15 adjoint on trough
2476      (what a pain)
2477    
2478    checkpoint57a_pre
2479    o some modifs in tools/build_options for sunos
2480    o call ctrl_pack for ctrl at end for optimcycle=0
2481    
2482    checkpoint57
2483    o add horizontal bi-harmonic viscosity for vertical velocity
2484      - new parameter viscA4W (defaults to viscA4)
2485      - affects only non-hydrostatic code
2486      - to be done: no-slip lateral boundary conditions
2487    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
2488    o implement Implicit Vertical advection for pTracers
2489    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
2490      (implemented also for implicit vertical diffusion & advection)
2491    o OBCS: extend application of tracer open boundary conditions
2492      to a strip beyond the boundary of width Olx/Oly
2493    o add call monitor to TAF set of required calls (flow directives)
2494      and include in natl_box_adjoint
2495    o untangle a few ifdefs related to cost, ctrl, autodiff
2496      untangel a few ALLOW_ECCO_OPTIMIZATION
2497    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
2498      (theta2, salt2 in ecco_cost_weights)
2499    
2500    checkpoint56c_post
2501    o OBCS as control variables
2502      - update ctrl_ad_diff.list, obcs_ad_diff.list
2503      - remove balance of obcs controls from default
2504      - fix index bug nobcs in ctrl_init
2505      - fix dummy fields filen in ctrl_pack
2506      - add dummy weights for obcs
2507    o lsopt: comment out fort.94 output
2508    o optim:
2509      - remove unnecessary header files
2510      - adjusted namelists
2511      - add xerbla.F to Makefile
2512    o exf:
2513      - multiple modifications of exf_check_range
2514      - unit change in exf_init_runoff from [m/year] to [m/s]
2515    o mdsio:
2516      - i/o-vector change debugLevel from debLevA to debLevB
2517    
2518    checkpoint56b_post
2519    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
2520      is called from DO_THE_MODEL_IO
2521      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
2522      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
2523      - clean up PTRACERS_WRITE_TIMEAVE a little
2524    o add another verification experiment that tests both the cfc-pkg and
2525      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
2526      reactive tendencies treated inline with regular timestepping
2527    o testreport previously did a lousy job of comparing small numbers, so
2528      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
2529      implemented in the little c-progam tmp_cmpnum.c which is embedded in
2530      testreport.
2531    o ptracers_monitor: bug fix for MPI
2532    
2533    checkpoint56a_post
2534    o GCHEM: finish reorganizating the package
2535      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
2536        (introduces another 3D-array for each passive tracer, but only if
2537        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
2538        gchemTendency is not needed because the timestep is done separately)
2539      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
2540      - GCHEM is now---more or less cleanly---separate from PTRACERS
2541      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
2542        so clear to me how that should be done in a general way.
2543    o CFC: improve formatting of output in CFC_ATMOS
2544    o PTRACERS:
2545      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
2546        that ALL experiments with ptracers enable can be checked. This makes
2547        GCHEM_MONITOR obsolete.
2548      - include a runtime parameter PTRACERS_monitorFreq that defaults to
2549        monitorFreq
2550      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
2551    o add PTRACERS (PTR0[1-5]) to testreport output
2552    o exf_check_range:
2553      * default changed to .TRUE.
2554      * will check values for niter0 if debLevA, every timestep if debLevB
2555      * STOP in exf_check_range if 'out of range'
2556      * range chosen generous to allow for potential extema
2557      TBD: a version with stricter range
2558           permitted range would be runtime parameters
2559    o GMredi:
2560      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
2561      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
2562      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
2563    o GCHEM:
2564      - move call to GCHEM_FORCING_SEP, so that it is now called before
2565        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
2566      - introduced a useGCHEM runtime flag and applied it everywhere.
2567      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
2568        this flag is now only visible within GCHEM-pkg routines.
2569      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
2570        be replaced by a 3D array that is computed before thermodynamics; for
2571        this, the tracer ID iTracer had to be included into the parameter list
2572        of ptracers_forcing
2573      - set up forward_step to call gchem_forcing, that will replace
2574        gchem_forcing_int in ptracers_forcing
2575      - cleaning up
2576    o small cleaning of exch2: remove files that are also in eesupp/src
2577    
2578    checkpoint56
2579    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
2580    o mnc: cleanup "full" files--fixes out-of-memory problem
2581    o ECCO-GODAE
2582      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
2583      * fully merged and updated from SIO code
2584        windstress sign change affects
2585        - exf_inscal_[u/v]stress
2586        - sign of xx_tau[u/v] adjustments
2587        - signs in cost_scat
2588      * ctrl_get_gen: avoid update of tau[u/v] for first few days
2589      * natl_box_adjoint updated and compressed
2590      * 2-level checkpoint switch added
2591        (tested in EXP. 1 of natl_box_adjoint)
2592      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
2593    o SVD
2594      * first complete, non-hacked version for SVD calculations
2595      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
2596        performed via direct access files admtlm_vector.it????
2597        (via ctrl_[un]pack)
2598      * optimcycle is used for ARPACK iteration counter
2599        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
2600      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
2601        and add linear transforms where necessary
2602      * controls are initial/final SST, SSS (can be extended; need to check
2603        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
2604    o mdsio: filename info to both stderr, stdout
2605    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
2606      from sign change
2607    
2608    checkpoint55j_post
2609    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
2610      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2611    o add consistent build directories and .cvsignore files to verification
2612    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
2613    o make all subroutines 30 or less characters in length for certain older
2614      compilers to work (a thorough search only turns up two routines in
2615      pkg/ptracers)
2616    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
2617      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2618    
2619    checkpoint55i_post
2620    o change arrays for total vertical diffusivity (2.D if explicit,
2621      3.D if implicit) ; each ptracer uses its own background value.
2622    o added mnc/NetCDF output capability to ocn_compon_interf
2623      - added bits to verification/cpl_aim+ocn so that it can run on
2624        ITRDA and other clusters without the mpirun "-wd" option
2625    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
2626      configuration
2627    o give MNC the ability to create additional files rather than
2628      exceeding a specified file size limit "MNC_MAX_FILESIZE"
2629      - the default is just less than 2GB which is a practical limit
2630        on many systems
2631    o Compute the non-local term using either KPP vertical diffusivity (=default)
2632       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
2633    
2634    checkpoint55h_post
2635    o add verification test "vermix"
2636    o remove all the *_ioinc flags and replace with the single global
2637      outputTypesInclusive flag
2638    o allow to set a vertical profile of vertical diffusivity for T & S
2639    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
2640    o useMNC moved from data.mnc to data.pkg
2641    
2642    checkpoint55g_post
2643    o Renaming carbon AD experiments to comply with testreport conventions
2644    o Updating adjoint of Held-Suarez hs94.1x64x5
2645    o Fixing directives for non-ECCO forward_step, after ECCO directives
2646      have been fixed to avoid recomp. of do_oceanic_phys
2647      Works well for global_ocean.90x40x15,
2648      but recomp. issue remains for carbon
2649    o Updating adjoint output for natl_box_adjoint after
2650      pkg/ecco has been modified (see taga c55d_post)
2651    
2652    checkpoint55f_post
2653    o rename to timeave_init_fixed
2654    
2655    checkpoint55e_post
2656    o some delicate re-shuffle of store directives to avoid one
2657      extra call of do_oceanic_physics
2658      affects ecco_the_main_loop.F, do_oceanic_physics.F
2659      checkpoint_lev1_directives.h
2660    o NB: this may break global_ocean adjoint temporarily,
2661      but it is clear how to fix it. Will do later, need this now.
2662    
2663    checkpoint55d_post
2664    o ECCO specific cost function terms (up-to-date with 1x1 runs)
2665    o ecco_cost_weights is modified to 1x1 runs
2666    o modifs to allow observations to be read in as
2667      single file or yearly files
2668    o enable to read exf forcing fields as either
2669      single file or yearly files (flag useExfYearlyFields)
2670    checkpoint55d_pre
2671    
2672    o switch between 2-level and 3-level checkpointing
2673    o add ability of MNC to write local and "partial" (eg. 2D slices where
2674      the full 3D field is never actually stored) arrays to NetCDF files
2675      with the correct (that is, the complete multi-dimensional) set of
2676      array indicies
2677      - used in mom_vecinv() to write the diagFreq output
2678      - tested (demonstrated) in verification/aim.5l_cs
2679    o further mnc-ification
2680      - add verification/lab_sea to the list with mnc setups
2681      - fix undefined mnc v-names in cd_code
2682      - add kpp to mnc output (both snapshot and timeave)
2683    o non-hydrostatic code
2684      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
2685        in calc_gw.F
2686      - defaults to viscAh
2687      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
2688        friction or Leith) in non-hydrostatic mode, as long as there is
2689        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
2690    o pkg/cost
2691      extend simple cost functions to treat time mean quantities
2692      (T,U,V) via cost_accumulate_state from cost_tile
2693    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
2694        be 2 times larger than the minimum size the advection scheme requires.
2695        now get a perfect conservation of salt in advect_cs test-exp (updated)
2696    o GGL90 (Gaspar's TKE mixed layer)
2697      - add horizontal diffusion of TKE, requires exchanges in
2698        do_fields_blocking_exchanges, horizontal diffusivity is zero by
2699        default. In OPA there is no horizontal diffusion of TKE but the
2700        mixing coefficients are computed from a horizontal average of TKE of
2701        6 points or so. I think that diffusion has a little more physical
2702        justification.
2703      - clean up ggl90_calc in the hope of reducing memory usage (this hope
2704        was in vain)
2705      - mask tke-variable in ggl90_init
2706    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
2707    o fix biharmonic diffusion on CS-grid.
2708    o more obcs stuff
2709      - added obcs_external_fields_load as an alternative to the EXF-pkg option
2710        for reading boundary values. This routine is called from
2711        obcs_prescribe_read
2712      - updated obcs_check
2713      - changed sponge layer relaxation parameter units for days to seconds
2714      - turned off sponge layer by default
2715      - changed argument list of OBCS_CALC to myTime+deltaTclock
2716      - fixed about 35 bugs in obcs_external_fields_load
2717    
2718    checkpoint55c_post
2719    o obcs stuff
2720      - new runtime flags useOBCSprescribe, useOBCSbalance
2721      - re-arranged obcs_calc
2722      - moved exf_getobcs to obcs_prescibe_read
2723        obcs_prescibe_read is called after ORLANSKI stuff
2724        and independent of it (executable can contain all).
2725      - updated obcs_check
2726      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
2727        These may be necessary only if tangential velocities are
2728        prescribed at OB, not sure, needs testing.
2729    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
2730      which simplifies the calls and passes the ifc check-bounds test
2731    
2732    checkpoint55b_post
2733    o add a 2D scalar, Z location, exchange_2 routine.
2734    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
2735      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
2736      affects advect_cs results (for the wrong reason): update output.txt
2737    o use a more standard discretization for biharmonic viscosity ;
2738     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
2739      affects results of dome set-up: update output.txt
2740    o fix gad_advection.F (CubedSphere part), back to version 1.23
2741    o fix bug in mom_vi_del2uv.F (CubedSphere part).
2742    
2743    checkpoint55a_post
2744    o merged code to
2745      * prescribe/read time-dependent open boundaries
2746        (works in conjunction with exf, cal)
2747      * sponge layer code for open boundaries
2748      * each boundary N/S/E/W now has its own CPP option
2749        (healthy for the adjoint)
2750    
2751    checkpoint55
2752    o up-to-date adjoint of previous breaks
2753      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
2754      - global_ocean_ebm: adjoint still needs fix (TLM ok)
2755      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
2756      - carbon: * remove tr1-related adjoint verification
2757                * add ptracer as control variable
2758    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
2759      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
2760    
2761    checkpoint54f_post
2762    o in verification/carbin/ remove experiment related to
2763      ALLOW_PASSIVE_TRACER (array tr1 etc)
2764      code_ad/ input_ad/ results_ad
2765    
2766    o add two new packages
2767      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
2768        + subject to optimization (memory)
2769      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
2770        + subject to reordering (many GOTOs in the original code)
2771        + so far opps is called for every (i,j) point, and then operates in
2772          the vertical; one may want to reorder the scheme in order operate in
2773          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
2774          fields)
2775    o overhaul of IO so that we now have flags for MDSIO and/or MNC
2776      - all verification tests compile and run with linux_ia32_g77
2777      - defaults are compatible with current input files--nothing
2778        should change if you were not previously using MNC
2779      - MNC output has been added in numerous places (eg. timeave)
2780        but there are still a few writes not yet do-able with MNC
2781        (this is in progress)
2782      - flags now allow for either/or/both use of MDSIO and MNC and
2783        documentation will soon follow
2784      - numerous small formatting cleanups for ProTeX
2785    o add version info (via BUILD_INFO.h) to MNC and stdout
2786    
2787    checkpoint54e_post
2788    o add two new packages
2789      - pp81 (Packanowski and Philander, 1981), Richardson number and
2790        stratification dependent mixing
2791      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2792      - these scheme operate in a similar manner as KPP (without ghat, of
2793        course), however there is only one diffusivity that is used for both
2794        temperature and salinity (and passive tracers)
2795    o add offline package
2796    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2797      provided by Stephanie Dutkiewicz
2798    o genmake2: add ability to search for C compilers and cleanup test output
2799      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
2800    
2801    checkpoint54d_post
2802    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
2803    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
2804      leading to additional shift by 5 days each year of integration
2805       (i.e. leading to considerable offset over the years)
2806    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
2807    o start with no AB and no initial filtering (staggerTimeStep):
2808      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
2809    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
2810      (external loading & cpl import/export stay in forward_step.F)
2811    o update coupling interface to work with new staggerTimeStep
2812    o change MDSIO ptracers_pickup.
2813    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2814    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2815    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2816    
2817    checkpoint54c_post
2818    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2819      this affects (truncation error) output.txt of test-exp:
2820       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2821    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2822    o change Qnet to always be the net heat flux, (+upward).
2823      affects (truncation error) output of natl_box exp.: updated
2824    o define the max number of passive tracers in PTRACERS_SIZE.h
2825    o start to test mnc routinely in exp0
2826    o add sea-ice loading (sIceLoad) as a new forcing field.
2827    
2828    checkpoint54b_post
2829    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2830       impressive on Altix and Opteron systems)
2831    o diagnostics can now write NetCDF files through the mnc package
2832    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2833    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2834    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2835      affects (truncation error) output of lab_sea & natl_box exp.: updated
2836    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2837    
2838    checkpoint54a_post
2839    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2840    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2841    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2842    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2843      + internal_wave (shift in writing cg2d_ini_res)
2844    checkpoint54a_pre
2845    
2846    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2847      - modified verification/lab_sea and natl_box_adjoint accordingly
2848    
2849    checkpoint54
2850    checkpoint53g_post
2851    o prepare splitting of thermodynamics: store convect.counter in common block
2852    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2853      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2854    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2855    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2856    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2857    o restore adjointability
2858    
2859    checkpoint53f_post
2860    o modifications that affect AIM experiment results (update output.txt):
2861      - no advection of S at top interface Nr (pkg/generic_advdiff)
2862      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2863    o AIM pkg:
2864      - include stability function into surf.Flux derivative relative to Tsurf
2865      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2866    
2867    checkpoint53e_post
2868    o merged cylindrical coord configuration
2869    o added rotating_tank experiment
2870    checkpoint53e_pre
2871    
2872    checkpoint53d_post
2873    o faulks upgraded: re-generate output.txt that have changed:
2874       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2875    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2876    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2877    o added Sadourny discretization of Coriolis
2878      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2879      - re-enabled use of omega3 (useAbsVorticity)
2880    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2881      vector-invariant equations
2882      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2883    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2884      hopefully without new bugs
2885      - still to do: biharmonic friction for non-hydrostatic w
2886    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2887    o regenerated output for global_ocean_ebm (using -ieee)
2888    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2889      of mom_common/
2890      - simple re-arrangement of instructions within computing loop
2891    checkpoint53d_pre
2892    
2893    checkpoint53c_post
2894    o new version of coupler for AIM+thSIce and Ocean models
2895     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2896     - land: change Evaporation of snow
2897     - aim with thSIce: fix bug in snow-precip.
2898    o changes to calc_gw.F
2899     - bug fix for w^2 term near the bottom boundary
2900     - (hopefully) improve the lateral slip boundary condtions for use with
2901        partial/looped cells
2902      - because the bug fix changes two verification experiments anyway (exp5
2903        and plume on slope), change the lateral boundary condition from half slip
2904        to the value of no_slip_sides
2905    o ebm package wasnt quite up to the parallel task. Fixed that.
2906    o Adjoint of EBM package + verification
2907      * TLM OK
2908      * ADM not sufficient accuracy yet (needs further testing)
2909    
2910    checkpoint53b_post
2911    o Commiting new energy balance model to repository
2912      * package is pkg/ebm
2913      * verif. is verification/global_ocean_ebm
2914      * references are in ebm_driver.F
2915    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2916    C        Global thermohaline circulation. Part I:
2917    C        Sensitivity to atmospheric moisture transport.
2918    C        J. Climate 12(1), 71-82
2919    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2920    C        Global thermohaline circulation. Part II:
2921    C        Sensitivity with interactive transport.
2922    C        J. Climate 12(1), 83-91
2923    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2924    C        Destabilization of the thermohaline circulation
2925    C        by atmospheric eddy transports.
2926    C        J. Climate 7(12), 1870-1882
2927    o Will need long integration testing.
2928    checkpoint53b_pre
2929    
2930    o created pkg/mom_common in preparation for variable viscosity code
2931    o renamed and split ini_mnc_io
2932    o pkg/land: only liquid water can diffuse or run-off
2933    o AIM using land: soil wetness availability account for snow
2934    o added printMapIncludesZeros to EEPARMS namelist
2935    
2936    checkpoint53a_post
2937    o restore TAMC compatiility for exf_constants.h
2938      (no usage of _d in .h)
2939    o Additional storing in KPP in an attempt to fix
2940      TAMC problem with adjoint of KPP code.
2941      (no success...)
2942      Identical code works fine with TAF.
2943    o Fixed verification/natl_box_adjoint experiments.
2944      Initial conditions for Experiments 4 and 5 are now
2945      set to "SEAICE_initialHEFF=0", which is more reasonable,
2946      and hence gives results closer to that of Experiment 2.
2947      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2948    
2949    checkpoint53
2950    o stable checkpoint with up to date adjoint
2951      TLM tests only run for 1st grdchk at the moment. Its unclear if
2952      this is a code problem or a problem with resetting code for g_
2953      variables that is being autogenerated wrong.
2954      Otherwise:
2955       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2956       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2957         are both still in chaos following their security messes.
2958    
2959    checkpoint52n_post
2960    o various build (mostly genmake2) changes including:
2961      - ability to build/run more easily within Cygwin and MacOS X
2962      - more complicated Makefiles with a stronger dependence on Gnu Make
2963    o pkg/seaice modifications
2964      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2965        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2966        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2967      - changed proxy for geostrophic velocity and updated
2968        verification/lab_sea/results/* accordingly
2969      - removed ADI dynamic solver from pkg/seaice
2970      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2971        they caused a segmentation fault under certain circumstances
2972      - removed unused field WATR
2973    o bug fix in exf-package:
2974      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2975         now reflect that.
2976    o small fixes in the cal-package:
2977      - set reference date to first of January for the 'model'-calendar
2978      - failing of cal_CheckDate in cal_FullDate now actually results in a
2979        warning
2980    o small modifications in exf-package to increase flexibility:
2981      - change climtempfreeze from a constant to a runtime parameter that
2982        is specified in data.exf_clim (default = -1.9)
2983      - introduce runtime parameter windstressmax (default = 2.0) that is
2984        specified in data.exf
2985    o fix in pkg/thsice:
2986      - update Evap (Tsf changes) to be consistent with Latent heat flux
2987      - maintain snow precipitation unchanged (even if Tsf >=0).
2988     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2989    
2990    checkpoint52m_post
2991    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2992      this does not change any of the results, because myIter=0 in swfrac always
2993      lead to jwtype=2 (the default anyway), but the call makes little sense
2994      as a default
2995    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2996    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2997      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2998    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2999    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
3000    o extending useSingleCpuIO option to work with new exch2 I/O format
3001      - old-style, missing-tile I/O is still accessible by defining CPP
3002        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
3003    o monitor package can write to NetCDF files and/or STDOUT
3004    o fix re-definition bug in MNC_GRID_INIT_ALL()
3005    o doc/api_reference added
3006      - a framework for building an API Reference Manual using all
3007        the "protex" comments embedded in the code
3008      - see pkg/generic_advdiff, pkg/mnc for examples
3009    o MNC:
3010      - make myThid the last argument for all subroutines
3011      - new default for the grid files: NO halos
3012      - add useMNC and other run-time flags
3013      - separate per-file-group handling of the unlimited dimension
3014      - early initialization of MNC w/ flags read at the eeboot stage
3015        and lookup tables set in initialize_fixed
3016      - write all MNC output to a freshly-created directory
3017    o thermodynamics sea-ice (thsice) is now tested with testreport.
3018    o test exp. advect_cs: use the standard cs32 grid ; update output.
3019    o Added functionality to grdchk:
3020      pick global i,j,k position (or nearest wet) where to perform check.
3021    
3022    checkpoint52l_post
3023    o new land formulation:
3024      a) use ground enthalpy as prognostic variable to ensure exact
3025         energy conservation.
3026      b) account for water temperature and for latent heat of freezing
3027         in all processes (rain, run-off, ground storage)
3028      c) compute surface and ground temperature implicitly.
3029    o aim_v23 modification for new land model:
3030      a) Treat separately land / ocean / sea-ice surface fluxes
3031         to allow implicit computation of land & sea-ice surface temp.
3032      b) add snow precipitation.
3033    checkpoint52l_pre
3034    
3035    o fix problem (when 1 tile is empty) in min/max monitor.
3036    o fix bug in timeAve (u,vZetatave in common block)
3037    o no restoring terms under ice for pkg/seaice
3038    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
3039    o bug fix for pkg/seaice pickups
3040    o change MNC call locations and add coordinate attributes
3041    o mask vorticity at the corner ; affects global_ocean.cs output
3042    o fix ini_curvilinear_grid ; test CS experiments with mpi
3043    o aim.5l_cs: modify sea-ice fraction input file ; update output
3044    o exf: Adding simple range check routine for exf fields after read
3045    
3046    checkpoint52k_post
3047    o removed top-level directory "diags"
3048      - we migrated these functions to pkg/timeave a long time ago
3049    o fixed bug introduced in pkg/monitor
3050    o accuracy ctrlprec = 32 insuffient for gradient checks using
3051      averaged fields (I/O via cost_averages)
3052      -> use ctrl.h in active_file*.F to control I/O precision.
3053    o paramter list of CALL ADTHE_MAIN_LOOP
3054    o added initial do_the_model_io to ecco
3055    o set all ...Freq to zero after cost_final
3056      taveFreq, dumpFreq, pChkptFreq
3057    o MAIN and ECCO differentiability restored
3058    
3059    checkpoint52j_post
3060    o fix nchklev in tamc.h for global_ocean...
3061    o Bringing flow and store directives up-to-date
3062    o Really weird thing!
3063      call do_the_model_io from the_main_loop with parameters
3064      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
3065      TAF places a faulty re-call of initialise_varia
3066      after cost_final call which should not be there!
3067    checkpoint52j_pre
3068    
3069    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
3070      error messages
3071    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
3072    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
3073      debug output
3074    o modfied mdsio_writefield.F to handle non-global files under exch2
3075    o update AIM Cubed-Sphere exp (aim.5l_cs):
3076      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
3077    o update AIM Equatorial Channel exp:
3078      use standard aim_v23 pkg and change the SST fields to be more realistic.
3079    o globalFile now works with exch2
3080    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
3081      mon_vort3.F to make exch2 friendly with >1 tile per cube face
3082    o limit timeave output for hi-res integrations
3083    
3084    checkpoint52i_post
3085    o removed CPP_EEOPTIONS.h from verification/*/code
3086    o updated the tiling for global_ocean_pressure
3087    checkpoint52i_pre
3088    
3089    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
3090      the old pkg/aim).
3091    
3092    checkpoint52h_pre
3093    o shortened offending lines in exch2_send_rx?.template
3094    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
3095    o genmake2: add build & execute test for NetCDF code
3096    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
3097      old grid files, moved CPP_EEMACROS.h to pkg/exch2
3098    o added useSingleCPUIO flag to monitor.F and mon_out.F
3099    o added temporary hack for sea-ice dynamics on the cube:
3100      metric terms are ignored and it is assumed that
3101      there is no sea-ice on cube faces 1, 2, 4, and 5.
3102    
3103    checkpoint52f_post
3104    o added exch2 cube routines to pkg/exch2
3105    o modified hs94.cs-32x32x5 to use it
3106    o added new grid files to hs94.cs-32x32x5
3107    checkpoint52f_pre
3108    
3109    checkpoint52e_post
3110    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
3111      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
3112    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
3113      to work with implicit vertical advection and AB ;
3114    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
3115    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
3116     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
3117    checkpoint52e_pre
3118    
3119    o fix bug in impldiff when Nr=1 or Nr=2.
3120    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
3121    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
3122    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
3123      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
3124    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
3125    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
3126    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
3127    
3128    checkpoint52d_post
3129    o re-tiled many expts to allow comparison in multi-processor mode
3130      - updated output accordingly
3131      - changed hs94.128x64x5 to use intial T from file rather than use the
3132        random number generator
3133    o add infrastructure in model routines for fizhi and gridalt packages
3134    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
3135    o changes to permit hi-res, cubed-sphere, configuration
3136      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
3137      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
3138      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
3139        of surface winds for the cube
3140      (A verification experiment, based on global_ocean.cs32x15, but with
3141       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
3142       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
3143       complete with example surface forcing files and matlab scripts to look
3144       at the output and compare it with that of global_ocean.cs32x15.)
3145    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
3146       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
3147       to conform to the common rule.
3148    o check-in the first version of the coupler + interfaces for multi-components
3149       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
3150       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
3151       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
3152       - ocean and atmos. share the same horizontal grid (no interpolation).
3153       - exchanges between component and coupler is done in forward_step
3154    o new verification experiment, cpl_aim+ocn:
3155       coupled ocean - AIM atmosphere on cs32 grid.
3156    
3157    checkpoint52d_pre
3158    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
3159    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
3160    
3161    checkpoint52c_post
3162    o Fixing OPTIONS files for use of exf:
3163      - ALLOW_ECCO not needed
3164      - ECCO_CPPOPTIONS.h should not be included from
3165        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
3166        as has been the case in the past
3167      - All cal/exf related options are currently set in
3168        single header file. Should remain so until we
3169        agree on a consistent new policy.
3170    o Removed all CPP options for cal package.
3171      cal has no more CPP options.
3172    o modified STOREs in GAD_ADVECTION
3173    o corrected key comp. for passkey
3174    
3175    checkpoint52b_post
3176    o new version: "thsice" of thermodynamic sea-ice pkg:
3177     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
3178     - modify fluxes but do not change theta directly;
3179     - light cleaning of bulk_force pkg (still needed with thsice).
3180     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
3181       + output_thsice.txt to test thsice & bulk_force pkgs.
3182    o put back grid & coriolis monitor output.
3183    checkpoint52b_pre
3184    
3185    o call "do_the_model_io" at the beginning (=> dump initial state)
3186    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
3187    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
3188      (need info on NUMBER_OF_PTRACERS)
3189    o missing PTRACERS headers in some routines
3190    o default tamc.h in pkg/autodiff supposed to crash
3191      to ensure proper customization
3192    
3193    checkpoint52a_post
3194    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
3195      - moved surfaceTendencyTice from pkg/seaice to main code
3196      - subroutine FREEZE_SURFACE now limits only surface temperature
3197        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
3198        => new output.txt for global_ocean.cs32x15 & global_with_exf
3199      - keep the old version of FREEZE for backward compatibility;
3200        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
3201      - corresponding modifs for TAF directives
3202    o added surface flux output variables to TIMEAVE_STATVARS
3203    o time-averaged output for pkg/ptracers
3204    o fix problem with ECCO-related divided adjoint
3205      snapshot file was missing some ad-variables,
3206      but no warning issued by TAF
3207    
3208    checkpoint52a_pre
3209    o some bug fixes for #undef REAL4_IS_SLOW
3210    
3211    checkpoint52 = ecco_c52_e35
3212    o after testing adjoints of checkpoint51u_post
3213    
3214    checkpoint51u_post
3215    o this is the post-merge tag of the ecco-branch
3216      (needs another clean checkout and re-testing)
3217    o various natl_box_adjoint configs and results
3218      but no input fields
3219    o obcs adjoint not yet merged!
3220    o adding ECCO global 1x1 and 2x2 degree configs
3221    o updated/extended some store directives for seaice
3222    o pkg/ecco now containes ecco-specific part of cost function
3223    o top level routines the_main_loop, forward_step
3224      supersede those in model/src/
3225      previous input data.cost now in data.ecco
3226      (new namelist ecco_cost_nml)
3227    o in ctrl/ cleaned some cross-dependencies and updated CPP options
3228    
3229    checkpoint51t_post
3230    o this is the pre-merge tag of the ecco-branch
3231    
3232    checkpoint51s_post
3233    o cleanup: removed various obsolete #define-s
3234    o pkg/grdchk
3235      - renamed 'ph-grd 3' to 'grad-res'
3236      - merged from ecco-branch
3237        (remaining bug fixes for obcs gradient checks)
3238      - additional high-precision output for testreport
3239        (grep for 'precision_grdchk_result')
3240    
3241    checkpoint51r_post
3242    o cleaned up or removed CPP_OPTIONS.h files
3243    o updated results for some of the tests to reflect the new
3244      optfiles (-ieee: -O0 instead of -O3)
3245    
3246    checkpoint51q_post
3247    o cd_code:
3248      - moved cd_scheme.F -> cd_code_scheme.F
3249      - separate read_checkpoint from cd_code_ini_vars.F
3250      - separated cd_code part from write_checkpoint
3251      - updated AD_SOURCE, generated .flow
3252      - added CD_CODE_VARS.h to the_main_loop
3253      - Moving cd_code specific store dir.s to pkg/cd_code
3254    o ctrl package totally restructured
3255      - pack/unpack now optional and decoupled from
3256        xx_/adxx_ I/O
3257      - ctrl_pack/unpack cleaned
3258        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
3259      - confined inclusion of AD_CONFIG.h to where necessary.
3260    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
3261    
3262    checkpoint51p_post
3263    o create initial cd_code package
3264      - WARNING: the initialization of fields within packages
3265        is broken because INI_FIELDS (where READ_CHECKPOINT is
3266        called) is called *before* PACKAGES_INIT_VARIABLES.
3267        This seems to be backwards since
3268        1) its important to initially zero the entire field including
3269           the "halo" region
3270        2) zeroing needs to be done *before* reading pickup info
3271           and the pickup call might or might not happen in any
3272           particular run
3273      - this needs an overhaul for R2
3274    o cleanup verification/*/code/GMREDI_OPTIONS.h
3275    o cleanup testreport
3276    
3277    checkpoint51o_post
3278    o bringing AD-related verif's up to date with genmake2
3279      - carbon/
3280      - global_ocean.90x40x15/
3281      - hs.94.1x64x5/
3282      - (front_relax/ )
3283    o (more) consistent directory structure for AD-related verif.'s
3284    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
3285    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
3286    o bug fix in find_alpha.F for MDJWF:
3287      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
3288        change rho -> rho-rhoConst
3289      - replace call find_rho to find_rhonum
3290    o initialisation of rFlx extended to full array (required by TAF)
3291      and shifted to thermodynamics
3292    o removed PTRACERS.h in ptracers routine
3293    o added surfacetendencyPtr to S/R parameter list pracers_forcing
3294    o Correcting initialisations for fVerU, fVerV.
3295    o helping TAF to recognize dependency on kUp for
3296      fVerU, fVerV
3297    o Replacing delZ by delR in pkg/ctrl/
3298    checkpoint51o_pre
3299    
3300    o undid all of cp51 pending some cleanups and discussion
3301    o added the [#include "AD_CONFIG.h"] statement to all files that need
3302       it for adjoint/tl #defines
3303     o re-worked the build logic in genmake2 to support AD_CONFIG.h
3304     o removed tools/genmake since it no longer works
3305    
3306    checkpoint51n_post
3307    o modifications to make FREEZE flux visible to pkg/kpp
3308      - moved surfaceTendencyTice from pkg/seaice to main code
3309      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
3310      - subroutine FREEZE now limits only surface temperature
3311        (this means new output.txt for global_ocean.90x40x15,
3312         global_ocean.cs32x15, and global_with_exf)
3313    o added surface flux output variables to TIMEAVE_STATVARS
3314    
3315    checkpoint51n_pre
3316    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
3317    o added [#include "AD_CONFIG.h"] to all files that use the following
3318      defines:
3319      - ALLOW_ADJOINT_RUN
3320      - ALLOW_TANGENTLINEAR_RUN
3321      - ALLOW_ECCO_OPTIMIZATION
3322    
3323    checkpoint51m_post
3324    o incorporating changes to get TAMC/TAF working in genmake2
3325      - added new TAMC/TAF targets to the Makefile
3326      - various cleanups related to package handling
3327      - these changes should have no impact on the forward model
3328    
3329    checkpoint51l_post
3330    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
3331     - faster algorithm for cal_addtime.F
3332     - higher precision arithmetic, where needed
3333     - pkg/exf *startdate variables changed from calendar date to
3334       model integration time
3335    
3336    checkpoint51l_pre
3337    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
3338    o enable to apply restoring on S & T only in a latitude band.
3339    o update output (external_forcing_surf modif. change truncation errors)
3340       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
3341    
3342    checkpoint51k_post
3343    o change default to: useNHMTerms=.FALSE.
3344     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
3345       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
3346     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
3347        exp1, ideal_2D_oce
3348     - change data file of oceanic exp (leave the results unchanged for now)
3349       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
3350    o set gravitySign automatically according to the vertical coordinate used
3351      (and change sign: back to "logical" value: +1 when R increases downward)
3352    o added an include barrier to the default CPP_OPTIONS.h and
3353      removed the #include "PACKAGES_CONFIG.h" from it
3354    o fix a bug in mom_fluxform (from chk51j_post)
3355    
3356    checkpoint51j_post
3357    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
3358    o adjusted some flow directives (dynamics, thermodynamics)
3359    o added cubed-sphere case to test cost function
3360    o heckpoint_lev?_directives.h now include
3361      pkg-specific directives, whenever those are enabled.
3362    o Moving pkg-specific flow directives to corresponding pkg
3363      Moving pkg-specific differentiation list to corresponding pkg
3364      Moving pkg-specific checkpoint-lev storing to corresponding pkg
3365      ---> conventions are
3366           - pkg_ad.flow
3367           - pkg_ad_diff.list
3368           - pkg_ad_check_lev?_dir.h
3369    
3370    checkpoint51i_post
3371    o merge of the branch-genmake2
3372      - knowingly breaks the older genmake
3373      - automatic generation of all ALLOW_${PKG_NAME} defines
3374      - new testreport supersedes older testscript
3375    o large number of package inclusion and header cleanups
3376    checkpoint51i_pre
3377    
3378    o new output for adjoin of global ocean vector invariant
3379    o fix for checkpoint of thermodynamic seaice and bulk_force
3380    o Steph gchem various cleanups
3381    
3382    checkpoint 51h_pre
3383    o fixed some single quotes
3384    o modify gchem pkg to be more versatile
3385    o modifications to clean up dic pkg
3386    o add pkg/cfc
3387    
3388    checkpoint51g_post
3389    o provide links for ARPACK and ADM*TLM
3390    o start removing verification/vero/
3391    o update AD-related stuff
3392      (in particular some IF-statements in model/src/ routines)
3393    o adding to verification/global_ocean.90x40x15/ adjoint of
3394      vector invariant setup
3395    
3396    checkpoint51f_post
3397    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
3398    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
3399      of tracer Green's fucntions for ocean inversion project.
3400    
3401    checkpoint51f_pre
3402    o Added on-the-fly spatial interpolation capability
3403        "USE_EXF_INTERPOLATION" to pkg/exf.
3404      - This is a temporary Cartesian-grid hack until
3405        the super-duper ESMF coupler becomes available.
3406      - See verification/global_with_exf/README for usage example.
3407      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
3408        flags and modified pkg/seaice accordingly.
3409    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
3410        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
3411        non-local transport term.
3412    
3413    checkpoint51e_post
3414    o pkg/mom_vecinv:
3415      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
3416      - add time-ave diagnostic of vorticity advection.
3417    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
3418    o atmospheric geopotential: - include water vapor effect;
3419                                - use p^kappa in p* scaling.
3420    o land pkg: read initial state from files.
3421    o AIM : add stratospheric drag in the upper level
3422    
3423    checkpoint51d_post
3424    o change function ILNBLNK (=> last non-blank char.) to return zero
3425      (instead of the string length) when the string. char is empty
3426    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
3427    o modif's to restore TAMC compatibility
3428      - avoid "_d" constructs in PARAMETER declarations
3429      - avoid interrupting lines by comment lines
3430    o Use cluster local disks for purely local I/O
3431      vs. globally visible disks needed for ctrl stuff
3432      (merged from ecco-branch)
3433      - new active_file_loc... and mdsio_..._loc routines
3434      - affected packages: autodiff, ctrl, grdchk, mdsio
3435    
3436    checkpoint51c_post
3437    o introducing integer flag debugLevel
3438      - debLevZero: suppress all output
3439      - debLevA: standard
3440      - debLevB: equivalent to current debugMode=.TRUE.
3441    o introducing pathname variable mdsioLocalDir for mdsio
3442      that can be specified at runtime
3443      (relevant for cluster I/O to local disk)
3444    `
3445    >>>checkpoint51b_post
3446    adjoint of ptracers
3447    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
3448    o extended state in checkpoint_lev?, etc.
3449    o alternative ctrl/cost with tr1 or ptracer
3450    o new comlev1_bibj_ptracers
3451    o new ptracers.flow
3452    o made ptracers_forcing same as external_forcing_s
3453    o added verification for adjoint with ptracers
3454      - adm. grdchk fail so far
3455      - tlm. grdchk OK
3456      - checked tapelev/comlev recomputations: OK
3457    <<<checkpoint51b_pre
3458    
3459    checkpoint51a_post
3460    o added code for biogeochemistry package
3461      - new pkgs: dic, gchem
3462      - new subroutine in ptracers
3463    o modify code for biogeo packages
3464      - in model/src and pkg/ptracers
3465    
3466    checkpoint51
3467    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
3468      - autodiff, ctrl, exf, grdchk, seaice
3469      kept separate packages
3470      - cost, ecco, obcs
3471    o updating verification/internal_wave, verification/lab_sea
3472      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
3473    
3474    checkpoint50i_post
3475    o Preparing next differentiable checkpoint and sync
3476      of MAIN vs. ecco-branch
3477      - 1st step: this one is differentiable
3478      - 2nd step: next(! not this) checkpoint will have updated packages
3479                  from ecco-branch)
3480    
3481    checkpoint50h_post
3482    o new package "land": provide surface BC for AIM.
3483    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
3484    o AIM: use true log-P extrapolation for near surface temp (= as in
3485        F.Molteni paper) ; update aim.5l_cs output.
3486    o New variable in PARM03 for more flexible pickups
3487    o somewhat cleaned package initialisation sequence for
3488      ctrl/ cost/ ecco/ in packages_... routines
3489    
3490    checkpoint50g_post
3491    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
3492      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
3493      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
3494        made the default because of faster convergence than ADI
3495    
3496    checkpoint50f_post
3497    o exf totally restructured
3498      - replaced all exf_set_ routines by one generic exf_set_gen.F
3499        and made sure it's still differentiable
3500      - split exf_getffields.F into new exf_bulkformulae.F
3501      - exf_inscal_/exf_outscal_ suffixes consistent with field names
3502      - updated adjoint/makefile and relevant verif. accordingly
3503    
3504    checkpoint50f_pre
3505     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
3506          + change Evap over land. (update aim.5l_cs output)
3507     o added missing .cvsignores and made uniform across expts
3508     o changed configuration of tidal_basin_2d expt
3509     o added pkg/debug functions for tracing code in fatal crashes
3510     o tidied pkg/monitor to use MONITOR_OPTIONS.h
3511     o new fn in pkg/monitor to stop model if solution grows too big
3512     o removed lots of single quotes from comments
3513    
3514    checkpoint50e_post
3515    o make KPP work with PTRACERS
3516     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
3517       nearly a copy of kpp_transport_s
3518     - there is no analogue to SurfaceTendencyS, so I have to use
3519       gPtr(of the surface layer) instead
3520    o add a new platform SunFire+mpi (SunFire 15000) to genmake
3521    checkpoint50e_pre
3522    
3523    checkpoint50d_post
3524    o change kpp output from multiple-record state files to single-record state
3525      files analogous to write_state.F
3526    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
3527      analogous to the cg2d-related output.
3528    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
3529      so that writing to internal file fn (with length 512) fails.
3530    checkpoint50d_pre
3531    
3532    checkpoint50c_post
3533    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
3534    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
3535    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
3536    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
3537    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
3538    
3539    checkpoint50c_pre
3540    Merging from release1_p13:
3541    o bug fix for pkg/seaice dynamic solver
3542    o Added SEAICE_initialHEFF to pkg/seaice
3543    
3544    checkpoint50b_post
3545    o store u*,v* in gU,V instead of in guNm1,gvNm1
3546    o in order to put the momForcing out of the Adams-Bashforth:
3547      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
3548      to timestep.F
3549    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
3550    o re-generate output for highly sensitive test-exp:
3551       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
3552    
3553    checkpoint50b_pre
3554    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
3555    o corrected CPP option mismatch in exf_Bulk... functions for case
3556      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
3557    
3558    checkpoint50a_post
3559    o Bug fix for merging between c50 and KPP.
3560      ikey was passed from thermodynamics to kpp_calc via
3561      common block rather than being recomputed in kpp_calc,
3562      in contradiction with new key itdkey.
3563      New key ikppkey created, and tamc.h headers updated.
3564    
3565    checkpoint50
3566    - 2nd step of merge with ecco-branch:
3567      merge changes in ecco-branch back into main trunk
3568    - bug fix in find_alpha
3569    - more storing in gmredi_calc_tensor.F, kpp_routines.F
3570    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
3571    - merged some sliced AD support routines
3572    
3573    checkpoint49
3574    merged from ecco-branch:
3575    o exf:
3576      - Enable initialisation of forcing fields to constant
3577        (runtime) values.
3578      - in exf_getffields.F
3579        Reduce i-/j-loop to interior domain, discarding overlaps.
3580        That also fixes wrong TAF-key computations for key_1, key_2
3581        with bulf formulae.
3582      - exf_init.F modify #ifdef for exf_init_evap
3583      - exf_getffieldrec.F, ctrl_getrec.F
3584        The following INT-usages are not safe:
3585          fldsecs  = int(fldsecs/fldperiod)*fldperiod
3586          fldcount = int(fldsecs/fldperiod) + 1
3587        and were modified.
3588    o autodiff: checkpoint_lev...
3589      - updated storing for bulk formulae (some arrays were missing)
3590      - added state for seaice package
3591      - synchronized with main branch
3592    o DIVA:
3593      Modif.s in
3594      - the_main_loop.F
3595      - the_model_main.F
3596      and added cost_final_restore.F cost_final_store.F
3597      o With these changes, it is possible to fully separate
3598        the first forward run to compute the cost function (mdthe_main_loop)
3599        and adjoint runs over individual DIVA intervals (adthe_main_loop)
3600        into separate model executions.
3601        This enables better tuning of DIVA to given queue sizes.
3602      o Loss of cost function value in consecutive DIVA runs is
3603        fixed by storing to 'costfinal' file.
3604      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
3605        beginning/end of adjoint integration is accounted for.
3606      The current changes apply to TAF-1.4.26.
3607      TAF has one remaining bug, requiring one manual change
3608      (see MITgcm manual).
3609    o cal: synchronized between MAIN and ecco-branch
3610    
3611    checkpoint48i_post
3612    o Changes to restore differentiability of code w.r.t. previous tag
3613      (mostly adding new routines to make list and replacing
3614      pressure by totPhiHyd).
3615    o Updated and merged grdchk package
3616      - has both ADM and TLM checks
3617      - works for single- and multi-proc.
3618      - output cleaned
3619      - worked successfully for parallel DIVA
3620    o genmake:
3621      - Adding -platform=SP4
3622      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
3623    o Modif. for DIVA:
3624      ctrl_unpack should not be called in intermediate DIVA interval.
3625      (similar thing would apply for active files such as
3626      tbar, sbar, psbar, which should not be reinitialised;
3627      only relevant for ecco-branch)
3628    
3629    checkpoint48h_post
3630    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
3631    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
3632    o Added SEAICE_initialHEFF to pkg/seaice
3633    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
3634    
3635    checkpoint48g_post
3636    --- EOS:
3637    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
3638      store total Potential in totPhyHyd for diagnostics & EOS.
3639    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
3640    --- Pressure/geopotential gradient:
3641    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
3642    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
3643      ( changes results of global_ocean_pressure )
3644    o NLFS + z-coord.: add eta*Rho' contribution.
3645    o accurate phiHyd when using interface-W at the middle between 2 centers
3646     ( changes results of ideal_2D_oce )
3647    o includes r* 2nd term in potential gradient.
3648    
3649    checkpoint48f_post
3650    Merging from release1_p12:
3651    o Modifications for using pkg/exf with pkg/seaice
3652      - improved description of the various forcing configurations
3653      - added basic radiation bulk formulae to pkg/exf
3654      - units/sign fix for evap computation in exf_getffields.F
3655      - updated verification/global_with_exf/results/output.txt
3656    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
3657      (SBO) core products, including oceanic mass, center-of-mass,
3658      angular, and bottom pressure (see pkg/sbo/README.sbo).
3659    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
3660      to avoid negative values in shallow regions.
3661      - updated verification/natl_box/results/output.txt
3662      - updated verification/lab_sea/results/output.txt
3663    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
3664    o Added useSingleCpuIO option (see PARAMS.h).
3665    o Updated useSingleCpuIO option in mdsio_writefield.F to
3666      work with multi-field files, e.g., for single-file pickup.
3667    o pkg/seaice:
3668      - bug fix in growth.F: QNET for no shortwave case
3669      - added HeffFile for specifying initial sea-ice thickness
3670      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
3671    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
3672      kpp_transport_t.F, forward_step.F, and the_main_loop.F
3673    o pkg/seaice:
3674      - adjoint-friendly modifications
3675      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
3676    
3677    checkpoint48e_post
3678    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
3679    o dynamics: change definition of computational domain & adapt mom_fluxform
3680      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
3681    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
3682        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
3683        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
3684        global_ocean.90x40x15 global_with_exf global_ocean_pressure
3685        inverted_barometer solid-body.cs-32x32x1
3686      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
3687    
3688    checkpoint48d_post
3689    o in preparation for r*:
3690     a) use pre-computed gradient of hydrostatic potential:
3691        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
3692     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
3693        => affects results of glob_oce_pressure (different truncation error)  
3694      update output.txt of ideal_2D_oce & global_ocean_pressure
3695    
3696    checkpoint48d_pre
3697    o in preparation for r*:
3698      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
3699      pass the 2 comp. of the grad. as arguments to momentum S/R.
3700      but for the moment, only used if it does not change the results.
3701    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
3702    
3703    checkpoint48c_post
3704    Modifications in treatment of initial flux forcing controls
3705    to avoid extra storing of flux fields.
3706    
3707    checkpoint48c_pre
3708    o Added tidal_basin_2d experiment (currently 1D!)
3709    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
3710    
3711    checkpoint48b_post
3712    o r* coordinate added in #ifdef NONLIN_FRSURF block.
3713     (modification to pressure gradient not yet implemented)
3714    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
3715      (for U & V) that are used for vertical advection of momentum.
3716    
3717    checkpoint48a_post
3718    o In preparation for r*, use temp. array to compute vertical transport
3719       in flux-form momentum pkg. => change results of few test-exp.
3720      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
3721                        lab_sea, natl_box & plume_on_slope
3722    
3723    checkpoint48
3724    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
3725    
3726    checkpoint47j_post
3727    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
3728    o moved adexch from forward_step to addummy_in_stepping
3729    o added exch in ctrl_map_...
3730    o aveFreq.=0. at end of cost_final to avoid overwrite in
3731      reverse checkpointing loop
3732    o Yet more changes in gmredi:
3733      * adgmredi_calc_tensor
3734        avoiding all recomputation of gmredi_slope_limit
3735      * adgmredi_x/y/rtransport
3736        added flag for excessive storing to avoid recomp. of
3737        u/v/rtans, dTdx/y/z
3738        -> this is not really necessary and very memory-consuming
3739      * adgmredi_slope_psi:
3740        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
3741      * gmredi_slope_limit
3742        re-activated full calculation of taperfct for case 'ac02'
3743    o updating verification/ adjoints of carbon, global_ocean.90x40x15
3744    
3745    checkpoint47i_post
3746    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
3747    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
3748      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
3749    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
3750    o gmredi: fix few bugs.
3751    
3752    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
3753    This will be a good checkpoint to plug into the ecco-branch.
3754    o few modif.'s to get latest version adjointed
3755      (mainly kick out code in ini_linear_phisurf)
3756    o modif's to run adjoint with exactConserv
3757    o case GM_BOLUS_ADVEC should be cleaned
3758      S/R gmredi_slope_psi should be cleaned
3759    o verification/carbon now has exactConserv=.TRUE.
3760    
3761    checkpoint47g_post
3762    o time-average AIM output: becomes independent from statvars time-average
3763      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
3764    o After TAF bug fix:
3765      Tested adjoint of gmredi package.
3766      Tests were done with checkpoint47 rather than with latest
3767      checkpoint47f_post since the latter is broken for the adjoint
3768      verification/carbon/ contains both ADM and TLM gradient checks.
3769    Here they are, before they get changed/lost/stolen.
3770    Mostly modif.'s to fix numerical sensitivities.
3771    Gradient checks OK for
3772    - GM_taper_scheme:
3773      * clipping
3774      * ac02
3775      * linear
3776      * glw91
3777      * dm95
3778      * ldd97
3779    - GMREDI_OPTIONS:
3780      * GM_VISBECK_VARIABLE_K
3781      * GM_NON_UNITY_DIAGONAL
3782      * GM_EXTRA_DIAGONAL
3783      * GM_BOLUS_ADVEC
3784    in conjunction with data.gmredi parameters to be checked in
3785    in a few minutes under verification/carbon/code/
3786    
3787    checkpoint47f_post
3788    Merging from release1_p10:
3789    o modifications for using pkg/exf with pkg/seaice
3790      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
3791        and SEAICE_EXTERNAL_FLUXES
3792      - pkg/exf CPP options EXF_READ_EVAP and
3793        EXF_NO_BULK_COMPUTATIONS
3794      - usage examples are Experiments 8 and 9 in
3795        verification/lab_sea/README
3796      - verification/lab_sea default experiment now uses
3797        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
3798    
3799    checkpoint47e_post
3800    o created a tag prior to creating a branch
3801    
3802    checkpoint47d_post
3803    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
3804      at the bottom boundary had an erroneous half slip boundary condition
3805    o added bottom drag and no slip boundary condition capabilities to
3806      oceanic pressure coordinates code
3807    o added new verification experiment global_ocean_pressure, this experiment is
3808      also described in the tutorial section of the manual
3809    checkpoint47d_pre
3810    
3811    checkpoint47c_post
3812    o Added a verification experiment for a global cubed-sphere ocean run
3813      -  verification/global_ocean.cubed32x32x30
3814      -  uses pkg/therm_seaice and pkg/bulk_forcing
3815    
3816    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
3817    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
3818      when using P-coordinate; only implemented for atmospheric config.
3819    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
3820      NOTES: requires option NONLIN_FRSURF to be "#define".
3821    o update advect_xz/results/output.txt (left from checkpoint44g_post)
3822    
3823    checkpoint47b_post
3824    Merging from release1_p9:
3825    o pkg/seaice
3826      - removed GOTO's and added taf directives
3827      - double precision constants to reduce the g77 (Linux)
3828        to F77 (SGI) differences reported in release1_p8
3829    o tools/genmake
3830      - added SGI options
3831    o verification/testscript
3832      - updated to that of checkpoint47a_post
3833    o verification/global_ocean.90x40x15/input/eedata
3834      - modified for SGI f77 compatibility
3835    o verification/lab_sea
3836      - added description of sea-ice model
3837      - added missing matlab routines
3838      - added test of thermodynamics parallelization
3839    
3840    checkpoint47a_post
3841    o new pkg: aim_v23
3842     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
3843       for now, keep the same surface forcing as before.
3844     - Part-Cell implemented into AIM; check that Heat & Water are conserved
3845     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
3846     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
3847    o add diagnostic of surface correction term in monitor output
3848    
3849    o bulk_force and therm_seaice
3850    - Two packages:  bulk_force (Bulk forcing)
3851      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
3852    - Earlier integration from Stephaine Dutkiewicz
3853      and Patrick Heimbach.
3854    - Two ifdef statements for compile time,
3855       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
3856    
3857    checkpoint47
3858    differentiable version of checkpoint46n_post
3859    o bug fix in quasihydrostaticterms
3860    o * "clean" adjoint code (in terms of extensive recomputations)
3861        can now be obtained for all GMREDI options (i.e. for
3862        - GM_VISBECK_VARIABLE_K
3863        - GM_NON_UNITY_DIAGONAL
3864        - GM_EXTRA_DIAGONAL
3865        - GM_BOLUS_ADVEC )
3866      * However, wrong gradient check problem remains unsolved.
3867      * New CPP options have been introduced for different
3868        tapering schemes
3869    o external_fields_load now part of differentiation list
3870    o pressure needs multiple storing;
3871      would be nice to have store_pressure at beginning or
3872      end of forward_step, e.g. by having phiHyd global (5-dim.)
3873      (NB: pressure is needed for certain cases in find_rho,
3874      which is also invoked through convective_adjustment).
3875    o recomputations in find_rho for cases
3876     'JMD95'/'UNESCO' or 'MDJWF' are OK.
3877    o #define ATMOSPHERIC_LOADING should be differentiable
3878    o ini_forcing shifted to begining of initialise_varia
3879    o Incorporating QNVS line search routines into MITgcm
3880      (this is separate code, and therefore not under pkg)
3881      lsopt/, optim/
3882    o Updated verification/carbon/
3883      - #define GM_VISBECK_VARIABLE_K
3884      - GM_taper_scheme    = 'ldd97'    
3885    
3886    checkpoint46n_post
3887    Merging from release1_p8:
3888    o verification/natl_box:
3889      updating new external_fields_load routine
3890    o New package: pkg/seaice
3891      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
3892      The sea-ice code is based on Hibler (1979-1980).
3893      Two sea-ice dynamic solvers, ADI and LSR, are included.
3894      In addition to computing prognostic sea-ice variables and diagnosing
3895      the forcing/external data fields that drive the ocean model,
3896      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
3897      The implied surface heat flux is then stored in variable
3898      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
3899      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
3900      non-local transport term.  Because this call precedes model
3901      thermodynamics, temperature under sea-ice may not be "exactly" at
3902      the freezing point by the time theta is dumped or time-averaged.
3903      N.B.: fairly large differences in accuracy occur across
3904            different platforms/compilers; comparison between
3905            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
3906            generated output gives:
3907       T           S           U           V
3908      C D M    c        m  s        m  s        m  s        m  s
3909      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
3910      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
3911      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
3912    
3913      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
3914    o GAD:
3915      - generated new common blocks to account for call of
3916        same gad routines with differing traceridentities
3917        (needed to modify tracerIdentity indices in GAD.h)
3918      - generated separate common blocks for case useCubedSphereExchange
3919        (Department of Futurology)
3920      - parameter lists to gmredi_?transport: added tracerIdentity
3921      - added new key indices to tamc.h
3922    o external_fields_load:
3923      - added this routine to TAF list
3924      - needed to make some common blocks global and additional storing
3925        along the same lines as exf package (checkpoint_lev?_directives.h)
3926    o exf:
3927      updated external forcing package
3928      - bug fixes carried over from ecco-branch
3929        (missing OBCS_OPTIONS.h in two routines)
3930      - enable easy to use "no forcing".
3931      - added exf I/O for atmospheric loading
3932      - added exf I/O for runoff data
3933      - transfered scaling between exf <-> MITgcm to exf namelist
3934    o Adding new verification experiment global_with_exf.
3935      This verification experiment is almost identical to the
3936      global_ocean.90x40x15 experiment, except that it uses
3937      the exf (and cal) package instead of the
3938      external_fields_load routine (cf README file).
3939    
3940    checkpoint46m_post
3941    o modified testscript to return -- when there are no lines of "%MON" output
3942    o added new flag "quasiHydrostatic" for QH mode
3943      and new routine quasihydrostaticterms()
3944    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
3945      New routine: mom_u_coriolis_nh()
3946    o fixed sign of non-hydrostatic metric terms in u and v equations.
3947      Depend on correct sign of gravitySign.
3948    o added work.pc* to .cvsignore in aim directories using ifc
3949    o introduced flag for controllin non-hydrostatic metric terms
3950    o removed gravitySign from PARM04
3951    o switched to g77/ifc from pgf77 in aim experiments
3952    
3953    checkpoint46l_post
3954    o made convective adjustment work with pressure coordinates:
3955     - changed the direction of k-loop in convective_adjustment.F for the
3956       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
3957     - adjusted the reference pressure k-index in convective_adjustment.F
3958     - adjusted the convection condition in convect.F (in analogy to
3959       calc_ivdc.F)
3960     - convective_adjustment no longer computes anything on the halos
3961     - removed the warnings about negative salinity from find_rho.F and
3962       find_alpha.F; instead the new routine look_for_neg_salinity, called
3963       at the beginning of find_rho, find_alpha, and find_beta, does a
3964       check of the entire slice, if CPP-option
3965       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
3966    checkpoint46l_pre
3967    
3968    checkpoint46k_post
3969    o fixed the verification/global_ocean.90x40x15 experiment:
3970     - new bathymetry (the world according to A., JMC, and M.)
3971     - new initial fields and forcing fields (*.bin files)
3972     - new POLY3.COEFFS (for the next release one should switch to a full
3973       equation of state: JMD95P or MDJWF)
3974     - fixed several errors and redundancies in the data file
3975     - experiment uses looped cells
3976     - added matlab directory with diagnostic scripts for plotting of output
3977    
3978    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
3979     - read AIM physics parameters from a file (data.aimphys)
3980     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
3981    
3982    checkpoint46j_post
3983    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
3984    o move wVel computation at the end of the time step, in S/R integr_continuity
3985    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
3986    o update timeave pkg for wVel diagnostic.
3987    checkpoint46j_pre
3988    
3989    checkpoint46i_post
3990    o Clean up AIM package (and keep the results unchanged):
3991      include CPP_OPTION and use IMPLICT NONE in all routines ;
3992      declare all the variables _RL ; use _d 0 for all numerical constants.
3993      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
3994    
3995    checkpoint46h_post
3996    o cleaned up the use of rhoNil and rhoConst.
3997      - rhoNil should only appear in the LINEAR equation of state, everywhere
3998        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
3999        and the dynamical equations are all divided by rhoConst
4000    o introduced new parameter rhoConstFresh, a reference density of fresh
4001      water, to remove the fresh water flux's dependence on rhoNil. The default
4002      value is 999.8 kg/m^3
4003    o cleanup up external_forcing.F and external_forcing_surf.F
4004      - can now be used by both OCEANIC and OCEANICP
4005    checkpoint46h_pre
4006    
4007     Added code to convert surface volume flux (fresh water) into
4008     a mass flux when using P coordinates in the ocean (OCEANICP).
4009     Note: It assumes you have set rho0=rhoConst=density of fresh water.
4010    
4011    checkpoint46g_post
4012    o Include a new diagnostic variable phiHydLow for the ocean model
4013      - in z-coordinates, it is the bottom pressure anomaly
4014      - in p-coordinates, it is the sea surface elevation
4015      - in both cases, these variable have global drift, reflecting the mass
4016        drift in z-coordinates and the volume drift in p-coordinates
4017      - included time averaging for phiHydLow, be aware of the drift!
4018    o depth-dependent computation of Bo_surf for pressure coordinates
4019      in the ocean (buoyancyRelation='OCEANICP')
4020      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
4021        Theta, Salinity, and Pressure in the parameter list. This routine is
4022        presently contained in find_rho.F. This routine does not give the
4023        correct density for 'POLY3', which would be a z-dependent reference
4024        density.
4025    o cleaned up find_rho
4026      - removed obsolete 'eqn' from the parameter list.
4027    o added two new verification experiments: gop and goz
4028      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
4029    checkpoint46g_pre
4030    
4031    checkpoint46f_post
4032    o Enable tangent linear (forward mode) gradient checks:
4033      - extended active file handling to g_... files
4034      - added TANGENT_SIMULATION to theSimulationMode
4035      - extended grdchk package accordingly
4036    o added tangent linear setup in verification/carbon/code_ftl
4037    o added adjoint setup in verification/front_relax/code_ad
4038    
4039    checkpoint46e_post
4040    o Added new equation of state -> MDJWF
4041      - EOS of McDougall et al., 2002, JAOT, submitted
4042      - caveat: the equation of state is only valid for a smaller (more
4043        realistic?) range of values than JMD95P/Z and UNESCO
4044      - added masks to the calculation of pressure in store_pressure
4045      - added more check values for density in check_eos (ini_eos.F), some of
4046        the old check values are out of the range of the MDJWF-eos, so don't
4047        expect perfect matches for those
4048    checkpoint46e_pre
4049    
4050    checkpoint46d_post
4051    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
4052      'OCEANICP', also initialised field pressure correctly in ini_eos in the
4053      case of pressure coordinates. eosType='JMD95Z' in
4054      combination with buoyancyRelation='OCEANICP' now causes an error.
4055    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
4056      in find_alpha/beta.
4057    checkpoint46d_pre
4058    
4059    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
4060      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
4061    
4062    checkpoint46c_post
4063    o Changes necessary for ocean in p-coordinates
4064     -  Added new buoyancy relation = 'OCEANICP'
4065     -  Added new parameters = gravitySign (this used to be contained inside
4066        the factor dRdZ which I added when we first switched to R coordinates).
4067     X GM/Redi is not compatible (yet)
4068     X bottom drag and no-slip need to be debugged.
4069    checkpoint46c_pre
4070    
4071    checkpoint46b_post
4072    o Added new equation of state -> JMD95Z and JMD95P
4073      - EOS of Jackett and McDougall, 1995, JAOT
4074      - moved all EOS parameters into EOS.h
4075      - new routines ini_eos.F, store_pressure.F
4076    o Added UNESCO EOS, but not recommended because it requires
4077      in-situ temperature (see JMD95)
4078    o Modified formatting for knudsen2.f in utils/knudsen2 and added
4079      unesco.f to be used with POLY3
4080    checkpoint46b_pre
4081    
4082    checkpoint46a_post
4083    o Added (atmospheric) pressure loading
4084      - new field in FFIELDS.h, etc...
4085      - new cpp flag ATMOSPHERIC_LOADING
4086    o Changed hFacC to _hFacC in calc_phi_hyd.F
4087    o Added SHORTWAVE_HEATING to some files for consistency
4088    checkpoint46a_pre
4089    
4090    checkpoint46
4091    further merges from release1_p5
4092    o new ctrl package
4093      - adopted from ECCO environment to enable optimization
4094      - added Eliassen Palm fluxes to controls
4095    o added Eliassen Palm flux controls to gradient check package
4096    o cost package
4097      - Compatible with new ctrl package
4098      - added Eliassen Palm cost hooks
4099      - modif's of existing cost functions
4100    o Adjoint-related bug fixes in kpp:
4101      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
4102      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
4103    o autodiff package
4104      - flow directives:
4105        + new for S/R do_the_model_io
4106        + enhanced for S/R checkpoint
4107        + new gmredi.flow
4108      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
4109        disable adcommon.h/g_common.h by default.
4110      - fixed problem for adjoint of global_max
4111    o modified verification/carbon/
4112    o New setup for adjoint of global_ocean
4113    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
4114    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
4115    o incorporated hooks for sponge layer code (external_forcing.F)
4116    
4117    checkpoint45d_post
4118    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
4119    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
4120      (affects plume_on_slope "cg2d" output)
4121    o add new parameter deltaTfreesurf for free-surface time stepping
4122    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
4123    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
4124    o change phiMin in exp1 (to agree with documentation)
4125    o add new flags:
4126     - T,S forcing inside/outside Adams-Bashforth
4127     - turn off temp,salt advection and/or forcing
4128     - for each tracer, define internal flag for multiDimAdvection & A-B
4129    o monitor: change definition of KE to check conservation of Energy
4130    
4131    checkpoint45c_post
4132    o Removed f90 comments ("!")
4133    o Modified initialisations to enable exf package for MITgcm
4134      (without invoking ECCO_PACKAGE).
4135    o modifications to gradient check package (Martin Losch)
4136      - enable centered differences
4137      - modified format of standard output
4138    
4139    checkpoint45b_post
4140    o cleaned exchange calls in cg2d
4141    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
4142    o included CPP option SINGLE_LAYER_MODE in thermodynamics
4143      to configure barotropic setup (Martin Losch)
4144    o moved some initialisations within bi,bj loop in dynamics
4145      (TAF flow dependency)
4146    o in initialise_varia, moved call packages_init_variables
4147      before convective_adjustment_init
4148      (corresponding adjustment of TAF tape initialisation).
4149    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
4150    
4151    checkpoint45a_post
4152    o compute Rho over the whole domain (extend iMin,jMin indices)
4153    o specific exchange for X-slice domain (case Ny=1)
4154    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
4155    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
4156    
4157    checkpoint44h_post = checkpoint45
4158    o Fix to restore differentiability:
4159      place at which packages_init_variables is called in
4160      initialise_varia is crucial for reverse control flow.
4161    o modifications in GMRedi to enable stable adjoint
4162      (corresponding modif's in thermodynamics, dynamics)
4163    o added missing hook for sponge layer code in external_forcing
4164    o modified test cost functions
4165    o storing in gad_advection (plus removal of write(0,*)!
4166    o missing headers TR1.h added in convective_adjustment routines
4167    o errorMessageUnit set non-equal zero in eeboot
4168      (conflict on some platforms, e.g. IBM SP3)
4169    o modified carbon verif.
4170    
4171    checkpoint44h_pre
4172    o vertical grid option: allow to put the Interface at the middle between
4173      2 cell-centers ; replace delZ in pkg/kpp by drF.
4174    o GM Advective form: Tracers are advected using the residual transport (=
4175      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
4176    
4177  checkpoint44g_post  checkpoint44g_post
4178  o fix surface correction term in multiDimAdvection (affects plume_on_slope  o fix surface correction term in multiDimAdvection (affects plume_on_slope
4179    results) ; ifdef missing in thermodynamics.F    results) ; ifdef missing in thermodynamics.F

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