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revision 1.66 by jmc, Tue Mar 5 15:36:06 2002 UTC revision 1.1157 by dfer, Thu Sep 17 17:01:04 2009 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/mom_common:
8      Move computation of length scales to mom_init_fixed.F (avoid recomputation
9      at each time-steps*levels).
10    o pkg/layers:
11      Created a new package for computing volume fluxes in temperature or
12      [not yet implemented] density layers, e.g. for calculating residual
13      overturning circulations.
14    o pkg/diagnostics:
15      implement a RS type version for the set of DIAGNOSTICS-FILL subroutines
16    o fix few RS/RL type mismatch (check with ifort 11.1 "-warn all" option)
17    o pkg/mdsio (& pkg/rw): rework high level S/R interface:
18      To avoid mixing type (RS/RL) of input/output array argument,
19      replace single mixed-type array with a pair from each type (RS/RL).
20    o setting pickupSuff force to start from a pickup (even if nIter0=0): this
21      is now implemented for all pkgs (previously only done for the main pickup)
22    
23    checkpoint61u
24    o pkg/obcs:
25      - change OB?eta from _RS to _RL and put them into a separate commen block
26      - add code to read OB?eta from a file via obcs_prescribe_read: the code
27        compiles and does not destroy any other experiments, the data is read
28        properly, but the code is not tested in actual applications
29    o ini_mnc_vars.F: if available (ALLOW_CAL), use startTime_1 and 2 to
30      create a meaningful unit attribute for the time coordinate variable
31    o pkg/ebm: add plenty of missing "_d 0" ;
32       update results of experiment global_ocean_ebm (fwd + adjoint tests)
33      Notes: several pieces of code only works for (very) specific set up
34       (domain size, lat range, etc ...); should be documented & stop if one
35       of those assumptions is not meet.
36    o pkg/seaice: add missing "_d 0" in HSNOW initialisation
37       update results of experiments: lab_sea (3 fwd tests + 2 adjoint tests)
38          and offline_exf_seaice (seaicetd + adjoint).
39    o add missing "_d 0" in ShortWave flux penetration (S/R SWFRAC):
40       update results of experiments: lab_sea (4 fwd tests + 3 adjoint),
41        seaice_obcs, global_ocean.cs32x15 (icedyn & thsice) and natl_box (x2).
42    o few changes to pass when compiling with strick checking of arguments
43       across S/R (allow to find few bugs in S/R calls).
44    o pkg/seaice:
45     - seaice_evp: move if-statement out of loop (TEM) at the cost of 11 new
46       2d-fields, for slightly better performance
47    
48    checkpoint61t
49    o pkg/seaice:
50     - remove unused variables in seaice_evp
51     - reduce number of SQRT in seaice_evp and seaice_calc_viscosities
52    o eeset_parms.F, open_copy_data_file.F & ini_parms.F:
53       named file replacing SCRATCH files (for TARGET_BGL & TARGET_CRAYXT):
54       each processor opens a different file (a fix from Matt).
55    o cg2d:
56       use simple EXCH (overlap size = 1 and ignore corners), like in cg3d.F :
57       this reduces number of EXCH calls by 2 when using exch2.
58       For now, keep previous size array for gc2d_nsa.F to avoid Pb with store
59       directives and missing simple EXCH (exch_s3d_rx) adjoint code.
60    o pkg/thsice:
61       add code for Near Infra-Red albedo (from Jeff)
62       (turned on with run-time flag: thSIce_calc_albNIR, in data.ice).
63    o ini_model_io:
64       move (from packages_readparms.F & initialise_fixed.F) to ini_model_io.F
65       MNC & MONITOR initialisation calls; move MNC calls from {pkg}_readparms.F
66       to {pkg}_init_fixed.F for {pkg}= kpp, seaice & shelfice.
67    
68    checkpoint61s
69    o pkg/exch2 (exch2_rxN_cube*):
70       remove last BARRIER (no need to synchronise after getting data from shared
71       buffer (get) as long as any change to buffer (put,recv) is between BARRIER)
72    o change tiling of natl_box (from 2 to 4 tiles) to get it tested with MPI+MTH
73      and generate new output (for the 2 tests) using default rotationPeriod.
74    o pkg/exch2:
75      - always call exch2_*_cube, not exch-1 anymore, if useCubedSphereExchange=F
76        (was already the case with AUTODIFF_EXCH2 defined)
77      - add bj in exch2 arrays and S/R.
78      - can now use pkg/exch2 for regular (non CS) set-up; switch test experiment
79        MLAdjust to exch2 (identical results except with MPI -> truncation diff);
80    o add pkg/longstep for ptracer timestep a multiple of U/V/T/S timestep
81      - adds deltaT argument to the subroutines TIMESTEP_TRACER DWNSLP_APPLY
82        GAD_ADVECTION GAD_CALC_RHS GAD_IMPLICIT_R GAD_SOM_ADVECT
83      - verification experiment natl_box.longstep
84    o build_options: ifort+mpi_aces optfile (following Constantinos advise):
85      allow different versions of ifort (8 or 9) and different versions
86       of mpi (mpich or mpich2) to be used with the same optfile.
87      requires to load a netcdf module and set MPI_INC_DIR (see comments inside
88       optfile). Change testing scripts (example_scripts/ACESgrid) accordingly.
89    o pkg/seaice:
90      fix previous modif (3-level field removed) for old-pickup reading
91    
92    checkpoint61r
93    o pkg/seaice:
94     - clean up the 3-time levels of UICE,VICE,HEFF,AREA in three steps:
95      1. introduce fields for time step (N-1)
96      2. do not use levels 2 and 3 anymore (but keep them)
97      3. replace 3D versions of UICE,VICE,HEFF,AREA by 2D versions. This
98         includes changes to pkg/thsice/thsice_get_velocity.F,
99         model/src/external_forcing_surf.F, pkg/obcs/obcs_apply_seaice.F, and
100         pkg/obcs/obcs_apply_uvice.F.
101     - completely remove code for leap-frog time stepping for second order
102       advection
103     - adjusted adjoint accordingly;
104       gradient checks have improved by an order of magnitude!
105    
106    checkpoint61q
107    o pkg/seaice: fix bug in free slip boundary conditons for LSOR solver
108     - the boundary conditions along open boundaries are unclear, because the
109       associated masks are set to zero and are thus treated as closed when
110       applying the slip-boundary conditions.
111     - move initialisation of grid variables from seaice_init_varia to _fixed
112    o adding doc/diags_changes.txt
113    o model/src:
114      do_the_model_io: rename few pkg S/R which are called from do_the_model_io,
115       to avoid "_diags" naming if no relation to pkg/diagnostics.
116      ini_theta,ini_salt: fix (at least compile the code) reading from NetCDF
117       file and only call PLOT_FIELD_XYZ if debugMode=T.
118      remove few PLOT_FIELD_XY calls outside initialisation.
119      remove few unnecessary BARRIER.
120    o pkg/salt_plume: add SaltPlumeSouthernOcean to allow disabling
121      of salt_plume package in Southern Ocean
122    o pkg/thsice:
123     - fix hOceMxL in overlap (needed for sea-ice advection);
124       update output of experiment global_ocean.cs32x15.icedyn.
125    o pkg/seaice:
126     - make the (placeholder-)tracer IceAge a little more meaningful
127      by avoiding ridging of age due to convergent ice flow
128     - add diagnostics for surface temperature, atmospheric and oceanic
129       heat flux, and atmospheric and oceanic ice growth
130    
131    checkpoint61p
132    o eesupp (global_max & global_sum):
133     - add one more element to buffer (start at index 0) for GL_MAX/SUM output;
134     - remove starting & endding barrier (no longer needed)
135    o pkg/mdsio, writelocal:
136       works also in multi-threaded when LOCBIN_IO_THREAD_SAFE is undefined
137       (remove the STOP): uses shared buffer IO to store data from all threads
138       and then let master-thread write nThreads tiles.
139    o pkg/mdsio (read/write field):
140     - tiled IO done in 1 piece (all levels at a time);
141     - new header file "MDSIO_BUFF_3D.h" with 3-D buffers.
142     - multi-threaded: allow to read/write local (non-shared) array
143       (was already working with singleCpuIO ; now works also without);
144       => no longer needs barrier call after reading a file (added inside
145       mds_read/write field).
146     - move barrier calls outside gather/scatter_2d to mds_read/write_field
147    o pkg/obcs/exf
148      - exf_getffieldrec.F: add a few ". _d 0" and
149                            add code to catch the case fldperiod = 0.  
150      - obcs_precribe_read.F: change if statements so that they match
151                              the variable type (_RL)
152      - add a separate exf_iprec_obcs to exf_set_obcs (by default equal to
153        exf_iprec) as part of namelist EXF_NML_01
154    o pkg/mdsio:
155      - read/write tiled (local) files: read/write 1-level tile chunk at a time
156        (instead of segment of length sNx); expected to speed up tiled IO.
157    o pkg/exch2:
158      - take buffer copy from/to array out of S/R exch2_send/recv into new
159        S/R exch2_put/get ; Exch of local variable now works with MPI+MTH
160        (tested by removing commom block statement in SOLVE_FOR_PRESSURE.h).
161      - ad version of send/recv no longer needed (but needs exch2_ad_put/ad_get)
162      - simplify argument list of S/R exch2_get_uv_bounds and exch2_get_scal_bounds
163        (which replaces exch2_get_recv_bounds & exch2_get_send_bounds) by
164        including Topology header file (and common blocks).
165      - implement EXCH_IGNORE_CORNERS in scalar exchange (rx1);
166        remove 2nd exch call in exch2_s3d_rx (no longer needed).
167      - document S/R arg. list (+ update some comments)
168    o pkg/seaice:
169      - added SEAICE_CLIM_AIR code, which permits modulation of surface air
170        temperature and humidity over sea ice based on climatological values.
171      - clean up computation of Hibler+Bryan (1987) stress coupling for the case
172        of LSR (this change is expected to change the results slightly because now
173        it uses slightly difference moduli from the second last LSR solution, but
174        that is more consistent with the stress computations; this part of the code
175        is not tested in the verification experiments)
176      - fix diagnostics for flux of ice in case of B-grid
177      - turn strain rates eij and press into global fields within global
178        common block in SEAICE.h for more straighforward diagnostics
179      - fix diagnostics for principal stress components, press, zeta, eta
180        to give something meaning full
181    o change tiling of global_ocean.cs32x15 (12 tiles, 32x16) and generate
182      new output (all 4 tests) using default rotationPeriod.
183    o pkg KPP:
184      - add flag (LimitHblStable) to avoid limiting BL depth under stable conditions
185      - fix vertical indices in RI_IWMIX (match between KPP grid from 0 to Nr+1
186        and normal grid from 1 to Nr)
187    o Fix computations of L4rdt in mom_calc_visc.F
188    o eesupp:
189      new S/R ALL_PROC_DIE (like EEDIE, without irrelevant threads err msg):
190      should be called before a "stop" if we know that all process are going
191      to stop; if one Proc does call this S/R, will hang in MPI_FINALISE.
192    
193    checkpoint61o
194    o pkg/exch2: change check_depths to issue just a warning (instead of error+stop)
195    o model/src/ini_curvilinear_grid.F:
196       compute angleSin/CosC when they are not read from a file
197    o pkg/seaice:
198       add pseudo time stepping for LSOR
199    o pkg/exch2:
200       temporary fix for exch2_s3d_rx; update results of exp. hs94.cs-32x32x5.impIGW
201    o pkg/seaice:
202       Adding separate sea ice albedo, drag coefficients, and HO in Southern
203       Ocean from those in Arctic Ocean.  See *_south in SEAICE_PARAMS.h
204    o SingleCpuIO:
205       fix bug put before chkp61n (May 11), when more than 2 MPI cpu are used.
206    o pkg/seaice:
207       put exchanged variable in (local) common block for MPI+Multi-Threads
208       to work (necessary with exch1, and for now with exch2 too).
209    o verification: to get more experiments tested with mpi, mth and mpi+mth,
210      change tiling of:
211       aim.5l_Equatorial_Channel, aim.5l_LatLon, dome, exp4, global_ocean.90x40x15,
212       hs94.cs-32x32x5, MLAdjust, offline_exf_seaice & tutorial_plume_on_slope
213      update output of exp:
214       exp4, global_ocean.90x40x15(+.dwslp), MLAdjust(all 5),
215       tutorial_plume_on_slope and hs94.cs-32x32x5 (use default rotationPeriod)
216      + ideal_2D_ocean: use default rotation period + test Global_Sum_SINGLECPU
217                       (note: output.txt generated on faulks using only 1 tile)
218    o eesupp & mdsio (SingleCpuIO):
219     - remove MISSING_TILE_IO (from MDSIO_OPTIONS.h), replaced by run-time
220       parameter "W2_useE2ioLayOut" (read from file "data.exch2").
221       Note: was not effective for globalFile & useSingleCpuIO=F; now fixed.
222     - move MDSIO_SCPU.h (pkg/mdsio) to EEBUFF_SCPU.h (eesupp/inc).
223     - fix GLOBAL_SUM_SINGLECPU when using Exch2; re-use same buffers and same
224       gather/scatter S/R as with SingleCpuIO (=> 1 less 2D global RL array).
225    o pkg/exch2:
226     - new code to set-up W2-Exch2 topology (replace matlab-topology-generator):
227       read parameter file "data.exch2" if it exists; otherwise try default regular
228       cube without blank-tile; new header file "W2_EXCH2_SIZE.h";
229     - update matlab-topology-generator (exch2_setup_cs6_print.m) to be compatible
230       with new code (not to be used, just as a backup solution).
231     - add examples (e.g., for lat-lon-cap_120) of parameter file "data.exch2"
232       in utils/exch2/input.
233    
234    checkpoint61n
235    o eesupp & mdsio (SingleCpuIO):
236      - move mapping to global io-buffer inside gather_2d/scater_2d: this save
237        memory (1 less 2D global RL array); skip 1 buffer copy; and only send/
238        receive real*4 array (instead of real*8) to read/write 32.bit files.
239        (new template for gather_2d/scater_2d, new set of S/R MDS_PASS_R4,8toRL,S
240         and remove new mapping S/R)
241    o pkg/mdsio: in preparation for topology-generator within pkg/exch2:
242      - Change declaration of SingleCpuIO buffer, reduced to only 1 dim.:
243        xyBuffer_size, which is set to W2_ioBufferSize from W2_EXCH2_PARAMS.h
244        when using exch2. Add S/R to map global io-buffer to global model array.
245      - uses exch2_global_Nx,y instead of exch2_domain_nxt,nyt.
246    
247    checkpoint61m
248    o write_utils : change WRITE_1D_R8 to WRITE_1D_RL
249      and add 3 other S/R for other types (R4,R8,RS).
250      Change calls to WRITE_0D/1D_R[4,8,S,L] to match the type of argument.
251    o eesupp/inc/CPP_EEMACROS.h (EXCH & GLOBAL_SUM/MAX macros):
252     - ensure suffix (_R4,_R8,_RS,_RL) correspondance between macro and S/R ;
253     - reduce number of macro definitions (keep only those which are used);
254       can always call directly the corrresponding S/R if needed.
255     - everywhere in the code: change macros (EXCH & GLOBAL_SUM/MAX) suffix
256       _R4/_R8 to _RS/_RL when applied to _RS/_RL variable.
257     Fixed wrong type of arg in:
258       atm2d/put_ocnvars.F cheapaml/cheapaml.F ocn_compon_interf/ocn_apply_import.F
259       ctrl/ctrl_map_ini_ecco.F seaice/seaice_do_diags.F seaice/seaice_model.F
260     To fix: global_sum of var in common block is wrong (multi-threaded) in:
261       dic/dic_atmos.F ebm/ebm_area_t.F ebm/ebm_zonalmean.F sbo/sbo_calc.F
262     To fix: aim_v23/aim_do_co2.F (BARRIER & GLOBAL_SUM within bi,bj loops)
263    o adjustment.cs-32x32x1: test "blank tiles" when compiling with mpi; 2nd
264      "nlfs" mpi test is going to stop when checking for unconnected tile egdes.
265    o eesupp/src: new S/R to stop everyone when 1 (or more) Proc. find an error
266    o pkg/exch2: new S/R EXCH2_CHECK_DEPTHS to check that unconnected tile
267      edges are closed (zero depth); might happen with "blank tiles";
268      for now, disabled if using OBCS.
269    o tools/gemake2: delete modifs from March 27-29 2009 (with option "-mpi":
270      link *_mpi files from "MODS" dir) to return to a strait-forward behavior.
271    o move read_write.F to write_utils.F ; new parameter (maxLengthPrt1D)
272      to reduce length of 1.D array print in STDOUT.
273    o adjustment.cs-32x32x1: changed to oceanic test with 1 continent
274      + use 48 tiles (16x8): this will allow to test "blank tiles".
275    o start to test MPI + multi-threaded (change testreport to skip tests
276      where number of tiles do not match).
277    o genmake2: add option "-omp" to turn on Open-MP ;
278      passed to testreport (if using -mth) ; merge few (*+mth) optfiles.
279    o pkg/exch2 (+ utils/exch2): ignore blank tiles (instead of removing them)
280      and keep the original tile numbering. Note: compatible with old
281      W2_EXCH2_TOPOLOGY.h & w2_e2setup.F topology files.
282    
283    checkpoint61l
284    o Overlaps had been forgotten in calculating ijk keys : fixed
285    o fix cyrus makedepend for gcc 4.4
286    o experiment fizhi-cs-aqualev20:
287      switching to new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE)
288      and generate new output. Note: new output is much closer to the old
289      one (v1.8) generated with pgf77 -O2 on Mar 14 2007 than it is from
290      the previous one (v1.9) generated with pgf77 -O0 on Jun 13 2007.
291    o pkg/fizhi:
292     - change to avoid indices going deliberately over array-bounds
293     - remove unnecessary MPI stuff
294     - perpetual spring equinox with "#define FIZHI_USE_FIXED_DAY"
295     - new version of S/R GETPWHERE available with #define TRY_NEW_GETPWHERE:
296       does not go over array-bounds and therefore returns reliable output.
297     - in fizhi_driver.F & fizhi_turb.F, fix "get_alarm" calls:
298       this S/R has 4 output arguments, which are used inside "get_alarm";
299       when it is called with the same variable "ndum" in place of several
300       output arguments, this produces weird side effect inside "get_alarm"
301      (e.g., datein=dates(n) is overwritten by timein=times(n) since both
302       datein & timein, resp. 2nd and 3rd arg., are pointed to the same "ndum"
303       address) and produces error.
304    o tools/gemake2: (March 27-29 2009)
305      with option "-mpi": link *_mpi files from "MODS" dir (this is what
306      testreport does).
307    o lab_sea experiment: change from 2x1 tiles to 2x2 tiles and regenerate output
308    o pkg/seaice: fix bug in new version of S/R SEAICE_LSR.F:
309       update lab_sea.lsr & lab_sea.salt_plume results
310    o pkg/seaice:
311      Major overhaul of the LSOR solver: change discretization from original
312      finite differences to finite volume. The old routine is still in the
313      file seaice_lsr.F and can be turned on with the CPP-flag
314      SEAICE_OLD_AND_BAD_DISCRETIZATION
315      Along with this change, the discretization of the strain rates is changed.
316      The same flag turns on the old discretization in seaice_calc_strainrates.F
317      All verification experiments with seaice are affected (except for
318      seaice_exf_offline); global_ocean.cs32x15/input.icedyn recovers the old
319      results by setting the above flag.
320      Further changes involve changes in defaults:
321      - ALLOW_FLOODING is defined and turned on by default
322      - SEAICEadvSnow = .true. is now the default
323      - SEAICEadvSalt = .true. is now the default
324      - SEAICEadvAge  = .true. is now the default
325      - SEAICE_clipVelocities  = .false. is now the default
326                                         (as per J. Zhang's recommendation)
327      - B-grid, and thus not tested: SEAICE_TEST_ICE_STRESS_1/EXPLICIT_SSH_SLOPE
328        is defined, SEAICE_TEST_ICE_STRESS_1 is renamed into SEAICE_BICE_STRESS
329      - seaice_growth: replace computation of UG by a simple copy from wspeed
330    
331    checkpoint61k
332    o pkg/seaice: a few bug fixes mostly concerning the metric terms:
333      seaice_lsr: fixed a few metric terms,
334                  affects lab_sea.lsr, lab_sea.salt_plume, seaice_obcs
335                  add more debugging diagnostics
336      seaice_evp: removed superfluous many metric terms of FV discretization
337                  of stress divergence
338                  affects lab_sea, lab_sea.hb87
339      seaice_ocean_stress: removed superfluous many metric terms of FV discretization
340                  of stress divergence for non-evp solver
341                  (this part is not tested anywhere)
342      seaice_calc_strainrates: fixed a bug in no-slip boundary conditions,
343                  they were effectively only half slip
344                  affects lab_sea.hb87
345      updated all relevant verification experiments (except lab_sea//output_adm.txt
346        which was left over, but fails at level 7 & 6)
347    
348    checkpoint61j
349    o pkg/seaice: turn a few hard wired parameters into run time parameters
350    o pkg/seaice/exf/monitor: turn netcdf coordinate variable T into model
351      time in seconds as promised by the usints in seaice_monitor and exf_monitor
352    o pkg/mnc: fix the coordinate variables for multi-tile curvi-linear grids
353      that are not cubed-sphere grids
354    o pkg/seaice: fix a bug for the rare case of SEAICE_VECTORIZE_LSR
355    o pkg/ctrl:
356      fix bug in ctrl_depth_ini.F (EXCH_XYZ was applied to 2-D field xx_r_low)
357    o non-hydrostatic (calc_gw.F):
358      fix viscA4 on CS-grid + fix diagnostics: Wm_Diss & Wm_Advec
359      update output of exp. global_ocean.cs32x15.viscA4
360    o remove backward compatibility for thetaMin,phiMin
361      (replaced by xgOrigin,ygOrigin on Jan 27, 2009)
362    o pkg/exf: fix a serious bug in exf_set_uv.F: do a rotation of the
363      interpolated wind field not only for curvilineargrid=.true., but also
364      for a rotated grid (rotateGrid=.true.)
365    o pkg/exf: add capability to bypass interpolation for runoff
366      by setting yet another CPP-flag
367    o eesupp/src, B-grid exchange:
368      add simple (6 tiles, non MPI) CS exch + standard interface S/R.
369    o autodiff
370      new CPP option ALLOW_TAMC_SINGLEPREC_COMLEV
371      allows to switch to single-prec common blocks;
372      corresponding switch occurs in tamc.h, integer isbyte
373      TAF store directivs "byte" and "kind" seem equivalent;
374      Most tamc.h have been updated correspondingly.
375    
376    checkpoint61i
377    o autodiff:
378      fix autodiff_sore/_restore indices for obcs
379      (spotted by I. Hoteit, M. Mazloff)
380    o pkg/autodiff, pkg/ctrl:
381      Add flag to reduce all tapelev I/O to single-prec.
382      In data.ctrl set
383        doSinglePrecTapelev = .TRUE.
384    o model/src/ini_curvilinear_grid.F, new grid-file format without EXCH2:
385      check in hack for SX8 compiler (for dxV, dyU); remove it afterwards.
386    o pkg/shelfice: fix bug with SHELFICEconserve flag, prepare for
387      real fresh water flux (not yet)
388    o pkg/mdsio & rw:
389     - add argument & option to S/R MDS_WRITEVEC_LOC (avoid Open/Close & write-meta)
390     - add simple interface S/R to MDS_WRITEVEC_LOC in pkg/rw: WRITE_GLVEC_RX.
391    o pkg/flt:
392     - replace FLT_INIT by 3-steps standard initialization S/R: readparms,
393       init_fixed & ini_varia.
394     - clean-up & simplify linear interpolation S/R:
395       move flt_bilinear.F -> flt_interp_linear.F ; add arg. myThid.
396     - fix some indices (mainly vertical index) ; add IMPLICIT NONE.
397     - more efficient I/O, using new options of MDS_WRITEVEC_LOC S/R.
398     - add vert. coordinate & horiz. indices to output files.
399     - change vertical position in initial condition, from index to depth [m].
400     - store horizontal (decimal) indices i,j in common block (instead of coord. x,y)
401       (easier to get to a curvilinear grid) ; delX,delY no longer used.
402    o pkg/ggl90: a few modifications:
403     - fix bottom boundary condition, and interpolation of KappaE
404       near top and bottom
405     - use same set of viscosity/diffusivity for TKE/momnetum/tracer
406     - add smoothing option as in Blanke and Delecluse (1993) (--> ALLOW_GGL90_SMOOTH)
407     - add a few options for mixing-length upper limit (--> mxlMaxFlag)  
408    o rename thetaMin,phiMin -> xgOrigin,ygOrigin
409      (maintain temporary backward compatibility, until next checkpoint)
410    
411    checkpoint61h
412    o pkg/diagnostics with "periodic averaging diagnostics":
413      fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
414    o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
415    o pkg/obcs: fix loop ranges for balancing code
416    o pkg/flt:
417     - improve criteria for finding which tile owns a float.
418     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
419    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
420      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
421      with ocean biogeo)
422    o pkg/flt:
423     - do some cleaning and fix the restart ;
424     - add output.txt in flt_example/results to get this pkg tested.
425    o genmake2: add an EXTENDED_SRC option and flag.
426       for now, cannot be turned on on command line (only through genmake_local)
427    o pkg/mdsio: read/write vector:
428     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
429     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
430       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
431     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
432      (drop to 4 digits matching for grad). But this test does not look very
433      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
434    
435    checkpoint61g
436    o pkg/flt:
437      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
438       + make OPTIONS file more standard.
439      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
440      - fix _BYTESWAPIO CPP-Flag
441      - standard reading of file-parameter "data.flt"
442      - fix argument list of S/R FLT_RESTART
443      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
444    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
445    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
446      a still unfixed compiler/optimization bug
447    
448    checkpoint61f
449    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
450      update results of global_ocean.cs32x15.icedyn test.
451    o move getcon.F from model/src to pkg/fizhi.
452    o pkg/exf: add parameter for extrapolation of temp up to the surface
453       and option to prevent negative evap (in bulk_largeyeager04 only).
454    o Prather Advection scheme: fix tracer conservation for divergent flow
455      (e.g., when using NonLin Free-Surface).
456    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
457    o gmredi (Visbeck-variable-K):
458     - add more parameters to Visbeck-variable-K.
459     - use a 5 points average for dSigmaR in Visbeck-K calculation
460       (more "homogenous": same stencil and same weights as in dSigmaH)
461     - update output of ideal_2D_oce experiment.
462    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
463      (#undef REAL4_IS_SLOW)
464     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
465       coordinate variable
466     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
467       (surface forcing fields), removes some of the functionality
468     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
469     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
470       probably not all: copy _RS surface flux fields to RL field before
471       calling DIAGNOSTICS_FILL
472     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
473       real*4 (CALL EXCH_*_RS) versions.
474     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
475       (generate new output).
476    
477    checkpoint61e
478    o gmredi (Visbeck-variable-K):
479      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
480      - change computation of Visbeck-K where Slope > Smax :        
481        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
482        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
483    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
484      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
485    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
486    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
487      does not become too large (to avoid precision problems in implicit-diffusion
488      solver); update ideal_2D_oce output.
489    o pkg ggl90:
490      - in ggl90_cal.F: compute only one set of visc/diff, used to
491        step forward TKE/T/S/momentum
492      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
493        have Prandlt =1)
494    o gmredi (fm07):
495      - add lower limit on Transition layer thickness + lower limit on 1/lambda
496      - allow to set few more params from data.gmredi
497    o pkg ggl90:
498          - add missing sqrt(2) factor in computation of mixing length
499            scale in ggl90_calc.F
500            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
501    
502    checkpoint61d
503    o adjoint modifs
504      - adapt to new field rhoInSitu
505      - allow to revert from StoreDynVars2D, StoreDynVars3D
506        to individual fields
507        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
508    o store 3-D (in-situ) density in commom block (DYNVARS.h)
509     - save 1 rho computation.
510     - no longer modify T & S inland when using down_slope pkg.
511    o gad_som : allow to switch to SOM advection for T & S without corresponding
512      pickup files (using new S/R: MDS_CHECK4FILE).
513    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
514      (for useSingleCpuIO to work in multi-threaded)
515    o pkg/shelfice:
516     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
517       with SHELFICEtopoFile in data.shelfice
518     - move code for reading ice shelf topography and modifying hFacC into separate
519       subroutines of the shelfice package
520     - separate initialisation of "fixed" and "variable" variables
521     - kTopC is not (yet) replaced by kSurfC, although this is possible
522    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
523    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
524      and rename:
525      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
526      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
527    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
528    
529    checkpoint61c
530    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
531      to add mass source/sink of fluid in the interior (3-D generalisation
532      of oceanic real-fresh water flux).
533    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
534    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
535    o new pkg: down_slope
536      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
537      - presently, modify T & S inland (dwnslp_calc_rho.F).
538        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
539      - implementation for ocean in P-coords not tested.
540      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
541    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
542      (to facilitate conversion of oceanic pkg to p-coordinate).
543    o change FIND_RHO to FIND_RHO_2D :
544      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
545    o new pkg: cheapaml
546    
547    checkpoint61b
548    o exch2:
549      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
550      - no longer depend on the order sequence (N,S,E,W).
551      - 3rd exchange no longer needed (tested with 24 tiles).
552      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
553      - exch_UV_A-grid readily available (but not yet tested).
554      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
555      (both are no longer needed) in exch_uv: no effect in forward run; but
556       get truncation error differences with adjoint exch.
557    o exch2:
558     - change index-bounds storage (moved from target to local tile,
559       more intuitive this way) ; rename/remove some variables.
560     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
561    
562    checkpoint61a
563    o exch2/matlab-topology-generator:
564      fix bug in index bounds for N-S internal exchange (hard to tell if this
565      had any effect on the solution).
566    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
567      is exceeded
568    o testreport: modify syntax of awk, so that it works also with
569      awk, and not only with nawk and gawk
570    
571    checkpoint61
572    o autodiff
573      Change default for TAF usage by removing argument '-nonew_arg'
574      This changes TAF subroutine argument list (ordering of active var.)
575      Omission of this flag leads to incompatibility w.r.t. TAMC
576      To restore TAMC-compatibility, need following modifs:
577      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
578      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
579      Tested TAF version is 1.9.22
580      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
581    
582    checkpoint60
583    --->>> This is the last checkpoint for which generating the adjoint
584    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
585    --->>> by default.
586    --->>> Future checkpoints will ommit this flag by default.
587    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
588    o pkg/grdchk: Add gradient check to etan0 perturbations.
589    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
590    o pkg/autodiff: more flexibility in zeroadj.
591      model/src: modifying do_oceanic_phys.F accordingly.
592    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
593    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
594      special setup of gmredi for which the adjoint is stable
595      enough for parameter optimization.
596    o bridging the gap between eddy stress and GM.
597      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
598          along with a change in CPP option (now ALLOW_EDDYPSI).
599      -> when using GM w/ GM_AdvForm:
600          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
601          is applied either in the tracer Eq. or in momentum Eq.
602          depending on data.gmredi (intro. GM_InMomAsStress).
603      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
604      The key modifications are in model/src/taueddy_external_forcing.F
605      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
606    
607    checkpoint59r
608    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
609      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
610      fix option to read coriolis(@ cell-corner) from files with CS-grid.
611    o pkg/mnc: add some attributes to standard 1D-coordinate variables
612    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
613      mass points, when using mnc for output
614      - add runtime parameter (missing_value, missing_value_int) to override
615        default (which is the value of getcon('UNDEF'))
616    o pkg/mnc: prepare mnc for the actual use of missing values with the
617      diagnostics package: small fix in mnc_cw_readwrite.template and more
618      initialisation of never used fields
619      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
620      versions
621    o pkg/thsice/thsice_ini_vars.F added default initial values so that
622      thermodynamics sea ice solver does not blow up when some initial fields
623      are missing.
624    o move from external_forcing_surf.F to ini_forcing.F
625      the p-coord. hack consisting in using pLoad to set phi0surf ;
626      update output of tutorial_global_oce_in_p (affected @ truncation level).
627    o Freshen up a bit hs94.1x64x5, notably:
628      remove rotationPeriod and tRef=5*0. (adjoint only), and add
629      exactConserv=.TRUE.
630    o pkg/generic_advdiff:
631      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
632      applies to files where Temperature & Salinity 2nd Order moments are used.
633    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
634      this uses a dynamically allocated internal state data structure
635      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
636      and requires a fortran 90 compiler
637    
638    checkpoint59q
639    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
640       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
641    o Refresh tutorial_global_oce_biogeo, notably:
642      - change bathymetry (put back seamounts in ACC, use hFacs)
643      - change EOS (POLY3 --> JMD95Z)
644      - use Bryan-Lewis vertical diffusivity
645      - use multidimensional advection
646      - remove old virtual virtual in dic pkg, now done through ptracer pkg
647      - change a couple of parameters in dic pkg
648    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
649    o pkg/obcs: change default to OBCSfixTopo = .true.,
650      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
651      - replace "debugMode" with "debugLevel .GE. debLevB"
652    o implementation of TAF directives for gchem,cfc,dic
653    o remove "exp5" (replaced by tutorial_deep_convection).
654    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
655      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
656      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
657      --> changes results in exp4, seaice_obcs
658    o tutorial_deep_convection :
659      update the set-up and increase resolution and domain size ; start
660      from pseudo initial conditions = output at t=120mn in order to see
661      something happening when running testreport.
662    o pkg/seaice: add os7mp as an advection scheme
663                  add check for advection schemes
664                  add a flag for restoring T and S underneath sea ice
665    o pkg/my82: add netcdf-support and diagnostics
666    o thsice pkg:
667      - Now hsMax limits snow height by turning it into ice following
668        flooding scheme (and now conserving energy)
669      - Slight rewriting of the formula in thsice_calc_thick.F
670      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
671      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
672    
673    checkpoint59p
674    o gchem / dic / cfc :
675      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
676      - add new parameter files: "data.dic" & "data.cfc" ;
677      - various re-arrangement in initialisation & header file ;
678      - fix tutorial_global_oce_biogeo for multi-threaded test.
679    o pkg/dic: test for "pickup_dic" file when restarting ;
680      if no pickup-file, can restart with a re-initialised pH (same as it did
681      before) providing pickupStrictlyMatch is set to False.
682    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
683      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
684    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
685      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
686    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
687     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
688       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
689    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
690       scheme to use for vorticty-term ;
691     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
692       (with default selectVortScheme, return to original discretisation)
693     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
694    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
695    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
696      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
697      also fix diagnostics VISCAHW & VISCA4W.
698    
699    checkpoint59o
700    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
701    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
702      move a few statemens out the main loop into separate loops
703    o pkg/shelfice:
704      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
705        (kg/m^2/s), does not break tests, because in verification/isomip,
706        rhoConstFresh=rhoConst (by accident)
707      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
708      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
709        new file model/src/seawater.F, so that they are available for all pkgs.
710      - convert potential temperature into in-situ temperature. This changes the
711        isomip tests => update tests
712    o add a flag writePickupAtEnd (default=true) to be able to suppress
713      writing a pickup at the last timestep
714    o tools/mpack-1.6 :
715      - disable automake (not working) and autoconf (not needed).
716      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
717        also cleaner with much less compilation warnings.
718    o pkg/profiles:
719      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
720      (for "less than 32 characters name" compiler requirement)
721    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
722      conditions that have a different sampling frequency than S/T/U/V obcs
723    o pkg/diagnostics (stats-diags):
724      - fix global Min/Max in case 1 processor get only empty tiles
725    o genmake2: replace (4 times)
726         make genmake_tc_1.o >> genmake_warnings 2>&1
727      with
728         COMM="$CC $CFLAGS -c genmake_tc_1.c"
729         echo $COMM >> genmake_warnings
730         $COMM >> genmake_warnings 2>&1
731      to make genmake2 always see the value of CC as specified in the optfile.
732    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
733      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
734      - modify verification advect_cs test to test SOM-advection on CS-grid.
735    o pkg/ctrl:
736      - Rewrite of ctrl_map_ini_ecco.F,
737        introducing a generic routine (ctrl_map_ini_gen.F).
738      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
739    
740    checkpoint59n
741    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
742      number in dedicate array "hdiag":
743      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
744        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
745      - many small changes (integer format) for large number of diagnostics
746      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
747        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
748    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
749      usingSphericalGrid, this allows to define the rotated grid coordinates
750      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
751      geographical coordinates according to the inverse of the rotation defined
752      by the Euler angles, so that Coriolis parameter and online-interpolation by
753      exf works with the geographical coordinates on XC/YC/XG/YG.
754      Naturally, this feature does not work with all packages, so some
755      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
756      profiles), because there the coordinates are assumed to be regular
757      spherical grid coordinates.
758    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
759      - introduce isopycnal diffusion coefficient control.
760    o tools/adjoint_options:
761      - additional control vector components.
762    o pkg/mnc: have mnc create marginally meaning full coordinate variables
763      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
764    o pkg/mypackage:
765      - add example of read/write pickup for state-var ;
766      - add entry points to the main code for state-vars diags & write-pickup.
767    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
768      transitions for useExfYearlyFields
769      - add new subroutine that determines the file to read from for
770        use*YearlyFields = .TRUE. and .FALSE.
771      - add a verification experiment to global_with_exf that tests
772        useExfYearlyFields with USE_EXF_INTERPOLATION defined
773    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
774      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
775      subroutines (which could be generated from a template, because they are
776      almost identical), for now they are included in obcs_prescribe_read.F for
777      simplicity
778    o pkg/exf:
779      - add a little more diagnostic to exf_interp_read (in analogy to
780        mds_read_field, can be turned off with debugLevel < debugLevA=1)
781      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
782        ugly but fast by unrolling short inner loops, inserting a unroll=8
783        directive in routine lagran, and splitting a loop and making do while the
784        outermost loop (the latter requires the intoduction of index arrays)
785    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
786    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
787      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
788    o verification/seaice_obcs: updated for restart test and latest options
789    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
790      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
791      for now this is only available for the C-grid code and also within
792      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
793    
794    checkpoint59m
795    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
796      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
797    o gad_som : fix flux output (& diagnostics) to have same units as other  
798      advection scheme fluxes (was previously multiplied by deltaT).  
799    o added verification/seaice_obcs both to test seaice open boundaries
800      and to provide an example matlab scrpt for generating them
801    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
802    o pkg/salt_plume: clean up salt_plume_frac.F to
803      remove redundancy in PlumeMethod 1 and 4
804    o pkg/kpp: added saltplume diagnostics
805    o pkg/obcs and pkg/seaice:
806      - do not set uice and vice to zero when OB*icefile are unspecified
807      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
808      - moved seaice tracer obcs after call to seaice_growth
809    o pkg/salt_plume: added various options for salt plume depth
810      criterion and for vertical distribution of the salt
811    
812    checkpoint59l
813    o pkg/ptracers: new version of ptracers pickup:
814      read meta file and write only fields which are needed to restart.
815      ( same logic as main pickup file ; also using pickupStrictlyMatch )
816    o pkg/seaice:
817      - add timescale for melting due to warm mixed layer as a means of
818        setting SEAICE_availHeatFrac more conveniently
819      - add a CPP-flag/runtime parameter check for flooding algorithm
820      - reformulated availHeat in seaice_growth.F to be independent of AREA
821    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
822      unit changes
823    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
824    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
825      SX vector computer.
826    o pkg/seaice:
827      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
828        seaice forcing fields can now be read only through pkg/exf
829      - removed some unused halos
830    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
831    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
832      or U/VICE from U/VWIND before computing U/VSTRESS
833    
834    checkpoint59k
835    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
836      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
837    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
838      all experiments pass when compile with un-initialised var. checking option.
839    o added pkg/salt_plume
840    o script to test restart (for now, in MITgcm_contrib/jmc_script)
841    o pkg/seaice: new read/write pickup version.
842      read meta file and write only fields which are needed to restart.
843      ( same logic as main pickup file ; also using pickupStrictlyMatch )
844    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
845    o lab_sea.hb87: modify the domain & update output.hb87.txt :
846      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
847      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
848      process. Fixed here by closing the domain at the Northern boundary.
849    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
850    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
851      a set of consecutive levels in/from a 3-D array.
852    o pkg/ptracers:
853      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
854      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
855    
856    checkpoint59j
857    o in pkgs: dic, obcs, offline, rbcs:
858      standard way to compute coeff. for time interpolation between 2 time reccords
859      which retains full precision (& make results less dependent on compiler).
860      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
861    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
862      packages instead of reading ice cover and wind speed separately
863    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
864     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
865      to allow to compile customized code before the update)
866    o cleaning-up:
867      - fix CPP instruction syntax in pkg/obcs
868      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
869        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
870      - fix some threads issue in IO parts.
871    o pkg/dic:
872      - add tons of "_d 0" (--> much better testreports !)
873       and then update outputs of tutorial_global_oce_biogeo
874    o pkg/mom_fluxform:
875      add a special version of momentum advection intended to conserve momentum
876      next to a bathymetry step or a coastline edge. (default = off = #undef)
877    o new read/write pickup version:
878      - for now, only implemented for main (mdsio) pickup file.
879      - write out only what is needed to restart; merge pickup_nh , pickup_ph
880        and main pickup together.
881      - read meta file; read only what is needed to restart; stop if a field
882        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
883        if it make sense (even if the restart is not perfect).
884      - if no meta file, assume that pickup to read corresponds exactly to
885        a pickup that would currently be written.
886      - read pickup written in the old format (until checkpoint59i) if it
887        recognizes an old meta file (no field-list).
888      - add a meta file in exp. which starts from a pickup: 2 cases:
889        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
890         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
891        b) a meta file describing the content of the associated pickup file
892         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
893    o pkg/mdsio & pkg/rw:
894      - new routine to read a meta file ; new set of routine to read
895        Multiple-fields file (with meta file).
896    o added open boundary conditions capability for seaice
897        HSNOW, HSALT, UICE, and VICE
898    
899    checkpoint59i
900    o adjoint:
901      * fix multiDimAdvection adjoint
902        (partial recomputation problem by TAF for fVerT(:,:,kDown)
903        and comlev1 size definition (maxpass vs. max. number of tracers)
904      * verification/global_ocean.90x45x15 adjoint now tests
905        NLFS and multiDimAdvection using DST3 (=30)
906      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
907    o pkg/kpp: add "_d 0" to real constant (if missing);
908      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
909      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
910    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
911      for internal parameters related to restart process (formerly from PARAMS.h)
912      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
913    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
914      as argument. (only atm2d & obcs write_pickup have not yet been updated)
915    o pkg/monitor:
916      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
917      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
918      - account for deep Atmosphere factor and density factor (anelastic)
919    o added open boundary conditions capability for seaice HEFF and AREA
920    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
921      thermodynamics
922      - requires a little reorganization, which affects the testreport results
923        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
924        so that now the conservative form is tested
925      - add a few comments
926    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
927    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
928    o add new diagnostics to seaice: advective, diffusive fluxes (only for
929      multidim-advection, for scheme 2 they are not filled) and transports,
930      thermodynamic growth rates
931    o change units of EmPmR (inside the code, + within coupling interface)
932      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
933      Affects results @ truncation level (cg2d match) and update output of
934       experiments: lab_sea(6), global_ocean.90x40x15(10),
935      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
936      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
937      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
938      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
939    
940    checkpoint59h
941    o pkg/exf:
942      - improve vectorization by moving if-statement out of loops in
943        exf_mapfields, exf_radiation
944      - exf_bulkformulae.F: introduce 2D fields and vectorize code
945    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
946    o testreport:
947      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
948        monitor & update offline_exf_seaice exp. output.
949      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
950    o pkg/seaice:
951      - bug fix in the evp solver: boundary conditions were affected be
952        masking of zMax/zMin (changes results)
953      - minor bug fix in boundary conditions in seaice_calc_strainrates
954        (changes results for no_slip)
955      - seaice_lsr.F: make interpolation of eta dependent on boundaries
956      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
957      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
958        stress formulation and no-slip boundary conditions
959    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
960      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
961    o pkg/seaice: a first HSALT time stepping equation has been checked in
962    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
963      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
964      without requiring DO-IF statements
965    o pkg/thsice:
966      use continuous power-law function for partition of energy between lateral
967      melting/freezing and thinning/thickening ; old code using step function
968      still available with #undef THSICE_FRACEN_POWERLAW
969      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
970    o testreport: change AD testing : check against results/output_adm.txt
971      using same scripts as for forward test.
972    
973    checkpoint59g
974    o adjoint testing: in preparation for changing testreport:
975      - output format: cost and grad written on separated lines
976      - ad output results in directory "results" (instead of "results_ad")
977    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
978    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
979    o pkg/ecco: allow user defined cost function contributions
980    o testreport:
981      Allow to choose (per experiment) the list of tested output variables
982       and the main variable (used to issue a pass/FAIL ) ;
983      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
984      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
985      Also modify printing of summary:
986       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
987       b) echo the list of tested variables in the individual summary.txt of
988          each experiment.
989    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
990      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
991      (but still depend on the tile decompostion of the domain).
992    o pkg/seaice: change a discretization detail to make the B-grid code
993      "more symmetric". This change is likely to remove all "ridges/leads" that
994      where quasi-aligned with the grid in B-grid solutions. It may also be
995      the solution to the stress coupling issues with the B-grid.
996    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
997      remove .cvsignore from input dir. (since testreport no longer run here).
998    o pkg/thsice:
999     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
1000     - fix reshaping of sea-ice just after advection:
1001       melt all the ice only if ice-volume is too small.
1002     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
1003       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
1004     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
1005    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
1006      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
1007    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
1008      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
1009      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
1010      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
1011      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
1012      -> update output.txt
1013    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
1014     this affects truncation error: -> update output.txt of exp:
1015      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
1016      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
1017    
1018    checkpoint59f
1019    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
1020    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
1021      a bounded range (in forward mode)
1022    o pkg/ecco, ctrl, autodiff and mom_common:
1023     internal parameter controls, completements of implementations
1024    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
1025    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
1026      (not seem any difference in testing results).
1027    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
1028       at face corners.
1029    o pkg/generic_advdiff:
1030     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
1031      loop range indices for computing vertical advection tendency
1032      and do the calculation in the interior only (no overlap) ;
1033      for now, only implemented for SOM advection (to save CPU time).
1034     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
1035    o exch2 adjoint
1036      First set of changes:
1037      - add exch2 hand-written adjoint templates
1038      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
1039        This will require cleanup in pkg/autodiff/*.F
1040        (changed routines currently kept separate in verif. code/)
1041      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
1042        that used to hide exch2 or cubed-sphere specific code
1043        (commented via 'cph-exch2')
1044    o pkg/seaice
1045      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
1046    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
1047       output of global_ocean.cs32x15.thsice .
1048    
1049    checkpoint59e
1050    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
1051      for B-grid vector (not yet tested) and C-grid vector (<- only used
1052      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
1053    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
1054      (#ifdef ALLOW_SALT_PLUME)
1055    o gather_2d/scatter_2d: removed halo regions
1056    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
1057      scheme and the corresponding test case (under front_relax dir). For now,
1058      only available with Skew-flux form and not yet tested in realistic set-up.
1059      adjoint: store directives updated, but gradient checks deteriorated,
1060      so maybe GM/Redi adjoint is now broken.
1061    o seaice adjoint
1062      * add AREA, HEFF, HSNOW as control variable
1063        (should not change lab_sea results)
1064      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
1065    o pkg/seaice:
1066      * added computation of saltFlux in seaice_growth;
1067        For time being, sea ice salinity is assumed constant
1068        contribution of snow flooding to freshening of sea ice is neglected.
1069        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
1070        defaults to 0.0 in order to maintain backward compatibility.
1071        Typical values for SEAICE_salinity are 4 to 10 g/kg.
1072      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
1073      * added SEAICE_availHeatFrac, which specifies fraction of surface level
1074        heat content used to melt or grow ice
1075      * commented out cap of HICE: it helps keep ice thinner
1076      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
1077      * applied OBCS T/S mask to HEFFM sea ice mask
1078    
1079    checkpoint59d
1080    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
1081     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
1082     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
1083    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
1084     and change default value of parameter "GM_Small_Number";
1085     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
1086       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
1087       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
1088    o pkg/ecco: cost function when applying pkg/smooth to controls
1089    o pkg/ctrl: add forcingPrecond run time parameter
1090    o pkg/seaice:
1091     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
1092     - fix bug in metric terms of u-equation in LSR solver (implicit part),
1093       changes verification/lab_sea
1094     - rearrange implicit part of u-equation in LSR solver to make it easier to
1095       read, understand, and debug. This causes changes at the truncation level.
1096     - fix (serious) bug in the boundary conditions (sign error in the implicit
1097       part) of the LSR solver. Changes all LSR results.
1098     - fixed problem with HSNOW initialization to avoid thick snow when AREA
1099       is initilized with small values - does not change lab_sea results.
1100     - added HsnowFile initialization capability
1101    o pkg/smooth: addition to model/src and pkg/ctrl so allow
1102     initialization of pkg/smooth and application to control vector
1103    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
1104    o dependencies: pkg/profiles requires pkg/cal
1105    o pkg/profiles:
1106     - added option ALLOW_PROFILES_GENERICGRID
1107         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
1108         that interpolation information (grid points and coefficients) is provided
1109         within the netcdf input files.
1110         -> sample matlab scripts can be found in MITgcm_contrib/gael
1111         that allow you to prepare netcdf input files.
1112     - also modified: cleaner include statements, cleaner error print statements,
1113       cleaner stops when error, and more tests of the netcdf input files consistency.
1114    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
1115    o pkg/seaice:
1116     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
1117       requires a new routine: seaice_diagnostics_fill.F
1118     - make sure that seaice does not move if not forced (pressure replacement
1119       method, Hibler and Ip, 1995), changes results
1120     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
1121     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
1122       It is turned off by default (=-1.), because it changes the results.
1123     - make it possible to read AREA from a file, too.
1124    
1125    checkpoint59c
1126    o add S/R and diagnostics for oceanic mixed-layer depth
1127    o move GMRedi call after all vertical mixing schemes (including KPP)
1128    o pkg/thsice:
1129     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
1130      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
1131    o pkg/obcs:
1132     - bug fix for balance code
1133    o pkg/seaice:
1134      - allow values of SEAICE_elasticParm > 1
1135      - add new parameter SEAICE_evpTauRelax as an alternative
1136        to SEAICE_elasticParm
1137      - make lsr boundary conditions free slip (by default), changes result
1138      - add code for no slip boundary conditions for lsr
1139      - set minimum of zeta to zero (and not 4e8) (changes results)
1140      - add a cap on AREA after advecting AREA if seaice_growth is not called
1141    o change calculation of Visbeck K:
1142      - no longer depend on tapering scheme; instead, compute slope (limited
1143        by GM_maxSlope). this is equivalent to what was comuted before with
1144        clipping or linear tappering.
1145      - fix vertical averaging (wrong by 1/2 level)
1146      - leave the old version (but will not be maintained) within
1147        #ifdef OLD_VISBECK_CALC / #endif
1148      - update output of exp. ideal_2D_oce
1149    o change error catch in calc_r_star to improve vectorization
1150    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
1151      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
1152    o adjoint:
1153      Re-organized adjoint checkpointing according to Matt Mazloff
1154      (but with modifs/completions/cleanups)
1155      Storing is now bundled into large arrays to optimized I/O
1156      (and second step in cleanup of the_main_loop)
1157    
1158    checkpoint59b
1159    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
1160      - export/import (between ocean & coupler) fields needed for ocean DIC.
1161    o pkg/seaice:
1162      - get rid of three more exchanges seaice_calc_viscosities (required
1163        different loop boundaries in seaice_lsr and seaice_ocean_stress)
1164      - bug fix in seaice_ocean_stress (update of lab_sea required)
1165      - reduce loop boundaries to necessary minimum also in seaice_evp
1166      - go back to the old way of computing deltaC/Z as the adjoint likes that
1167        better
1168    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
1169      passive tracer to an Age Tracer) + update output.txt
1170    o pkg/exf:
1171      - implement A-grid / C-grid selection for wind-stress input files.
1172      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
1173      for now, in exf_bulk_largeyeager04.F only :
1174      - change implementation for case where windspeed + 2. components wind-stress
1175        are read-in. AND use rhoConstFresh to convert evap.
1176    o pkg/seaice:
1177      - use correct EXCH_UV for wind-forcing (on A-grid).
1178      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
1179        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
1180    o pkg/exf:
1181      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
1182      EXF_INTERPOLATION:
1183      - merge global_with_exf/code version of exf_interp_read.F
1184        to the main code ;
1185      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
1186        reading the file ; Important: This options needs to be defined to recover
1187        previous code.
1188        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
1189      - no longer loose real*8 precision along the way when using exf_iprec=64.
1190    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
1191      - change discretisation of evp-solver in order to avoid another exchange
1192        (changes lab_sea) and clean up a little
1193      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
1194        help the adjoint (this also changes the results slightly)
1195      - add a few "_d 0" where they had been missing in seaice_evp.F
1196      - cleaning up: remove unused seaice_calc_rhs.F
1197    o pkg/exf: some cleaning-up:
1198      - change various "constants" into runtime parameters
1199      - cleaned-up Large&Yeager04 routine which should eventually
1200        replace exf_bulkformulae.F (changed names of S/R and CPP)
1201        and merged various ALLOW_ATM_WIND options
1202     only used with thsice pkg (in thsice_get_exf.F):
1203      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
1204        which are used when useStabilityFct_overIce=TRUE (= the default)
1205      - change default values of ice & snow emissivity and scale downward LW
1206        by ice & snow emissivity.
1207    o pkg/thsice:
1208     fix few little problems, in thsice_calc_thickn.F:
1209      - growth vertically (and not laterally) if iceFrac == iceMaskMax
1210      - melt only laterally if hIce < hThinIce (as the comments say)
1211      and in thsice_extend.F:
1212      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
1213      - start to form ice as soon as the minimum ice-volume is reachable.
1214     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
1215      and cpl_aim+ocn
1216    o pkg/kpp
1217     - move computation of surface related input fields to KPP into a new
1218       subroutine kpp_forcing_surf.F
1219     - remove wrong (within bi,bj loops) EXCH calls.
1220     - little cleaning (add argument myThid in last position, cvs header ...)
1221     - for now, fix conservation problem by exchanging KPPviscAz (may not
1222       be the best fix)
1223    o pkg/seaice
1224     - check for inconsistent evp parameter/cpp-flag combination
1225     - remove leftover errIO flat for obsolete name list error handling
1226    o OpenAD
1227     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
1228    
1229    checkpoint59a
1230    o pkg/seaice: some parameter clarifications and a little bit of clean up
1231    o pkg/thsice: rename run-time parameters:
1232       himin       -> hIceMin
1233       himin0      -> hThinIce
1234       hihig       -> hThickIce
1235       i0          -> i0swFrac
1236       transCoef   -> bMeltCoef
1237       frac_energy -> fracMelting
1238      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
1239       with default values (for now) that do not change the results.
1240      remove old version of thsice vars advection in pkg/seaice.
1241    o in FFIELDS.h:
1242      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
1243      - make pLoad & sIceLoad always available (but still only used if
1244         ATMOSPHERIC_LOADING is #define).
1245    o pkg/kpp: replaced _KPP_RL with _RL
1246    o bug fixes for vertical diffusivity computations when both KPP and
1247        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
1248        are no longer updating the vertical diffusivity array
1249        (passed as argument) but are (re-) setting those arrays.
1250    o pkg/seaice: fix bug in evp solver, while doing that
1251      - change (improve?) discretization of stress computations for both
1252        cgrid-lsr and evp solver
1253      - add a new routine to compute strain rates
1254      - the above changes lab_sea results
1255      - add no slip conditions for evp solver (off by default), lsr-version
1256        may follow
1257      - fix exchange for shear at Z-points (does not change lab_sea)
1258      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
1259        (to force the user to pick a time step since there is not "safe" way
1260        of choosing it)
1261      - add principal stress diagnostics
1262      - rearrange fields for evp a little to avoid having to call a: too many
1263        exchanges and b: exchanges for stress trensor components which we do
1264        not have.
1265      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
1266        of evp, complete rewrite for lsr case (latter is does not yet work
1267        in all cases)
1268    o pkg/kpp: add code to have mixing in shelf ice caverns
1269      - add myThid to all kpp routines (long overdue)
1270    
1271    checkpoint59
1272    o pkg/exf:
1273      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
1274        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
1275      - move exf header files from lower_case.h to UPPER_CASE.h ;
1276        add missing cvs Header & Name
1277      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
1278      - add namelist param. selectStressGridPosition, exf_monFreq
1279      - retire many _CLIM routines, and remove data.exf_clim
1280        + params moved to data.exf
1281        + climsst, climsss now handled by exf_set_gen, i.e.
1282          climss?period=0 refers to constant field,
1283          climss?period=-12 to monthly forcing
1284      - split up namelists in data.exf
1285    o pkg/seaice:
1286      - remove seaice_exch and seaice_exch_uv
1287      - remove superfluous exchange of theta
1288      - add myThid to seaice_budget_ocean/ice
1289      - add new interface for atmospheric wind forcing (C-grid only)
1290        + new routine
1291        + two new field (taux, tauy for stress over ice)
1292        + removed one global field (DAIRN) for C-grid case only
1293    o pkg/thsise
1294      - 2nd set of modifs for thsice adjoint in conjunction with exf
1295    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
1296    
1297    checkpoint58y_post
1298    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
1299      vertical diffusivity, similar to that in MOM4; turned on using
1300      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
1301      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
1302    o Added capability for 3D specification of background vertical diffusion
1303      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
1304      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
1305      "data" file that contains the 3D vertical diffusivity coefficients.
1306    o ice dynamics (pkg/seaice) with thsice thermodynamics:
1307      - add code within pkg thsice to advect & diffuse sea-ice fields
1308      similar to (and will replace) what has been added in  seaice_advdiff.F,
1309      but: - conserving Mass, Heat & Salt.
1310           - better when using non-linear advection scheme (not yet fully tested)
1311           - can also be used in atmospheric set-up (for now, only the diffusion).
1312    
1313    checkpoint58x_post
1314    o IO option for global-file compact format:
1315      - add options when generating topology (utils/exch2/matlab-topology-generator)
1316      - add I/O capability (pkg/mdsio).
1317      - adapt utils/matlab/rdmds.m to read this format.
1318      for now long-line format not yet supported by pkg/mdsio (& exch2).
1319    o shelfice: add a few diagnostics
1320    
1321    checkpoint58w_post
1322    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
1323      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
1324      (and replace horiVertRatio in NH code).
1325      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
1326                         and tutorial_plume_on_slope (sensitive to truncation)
1327    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
1328      directly to drive seaice model (C-grid only)
1329    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
1330     - reintroduce computation of wind from stress,
1331     - compute tau (in exf_bulkformulae.F) from windstress averaged to
1332       mass points to avoid tau = 0
1333     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
1334    o rdmnc.m: make it work with "global" files created with gluemnc
1335    o rdmnc.m : some improvements in dealing with singleton dimension
1336      (tested on all testreport mnc output files).
1337    o genmake2: disable pkg/profiles if netcdf test fails.
1338    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
1339    o move call to cal_readparms up to make calendar parameters/variable available
1340      to all packages
1341    
1342    checkpoint58v_post
1343    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
1344      useDynP_inEos_Zc tested.
1345    o pkg/exf: changes to properly interpolate/mask/scale initial fields
1346    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
1347      and portions thereof.  See read_cs.txt for description and examples.
1348    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
1349      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
1350      following the great-circle arc between those 2 points.
1351    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
1352      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
1353    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
1354     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
1355     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
1356     - still needs work (not working with some options ; efficiency to improve)
1357       and serious testing.
1358     - use this scheme for temperature & salinity in 2 advection test exp.:
1359       advect_xy & advect_xz, respectively.
1360    
1361    checkpoint58u_post
1362    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
1363    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
1364    o testreport: add option "-skipdir" to skip some test.
1365    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
1366      momentum calculation.
1367    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
1368    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
1369      remove checkpoint.F and the_correction_step.F (no longer used);
1370      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
1371    o add option (linFSConserveTr) to correct for tracer source/sink due to
1372      Linear Free surface
1373    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
1374    o pkg/thsice: fix reading mnc-pickups
1375    
1376    checkpoint58t_post
1377    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
1378    o pkg/mdsio:
1379     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
1380       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
1381       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
1382     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
1383     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
1384       either MDS_READ_FIELD or MDS_WRITE_FIELD )
1385     - new S/R (to replace MDSWRITEMETA), which allows to write more
1386       informations (variable names, time ...) to meta files.
1387     - modify rdmds.m to give back the meta file content.
1388    o pkg/diagnostics: change vertical interpolation to be safer, and more
1389       flexible (define p-levels to interpolate to in data.diagnostics);
1390      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
1391       diagnostic pointer.
1392    o pkg/seaice: more cleaning up of seaice_growth, added many comments
1393    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
1394    o fix multi-category seaice:
1395     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
1396       SEAICE_MULTICATEGORY
1397     - fix short wave heat flux
1398    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
1399       and allow to use EVP solver. Change forward lab_sea: test both EVP
1400       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
1401    o Initial check-in of lab_sea adjoint
1402      (very similar to natl_box_adjoint/code_seaice)
1403      * used C-grid and EVP solver
1404      * used KPP, GM/Redi
1405      * uses inAdExact=.TRUE.
1406      * gradient checks fail for both ADM and TLM
1407        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
1408        f.d. gradients actually seem more problematic than ADM, TLM gradients;
1409        issue is related to forward mismatch between g77 an ifort
1410    o pkg/seaice: overhaul of thermodynamics
1411     - growth.F and groatb.F are replaced by new routine seaice_growth.F
1412     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
1413     - move a few global fields out of SEAICE.h into seaice_growth.F and
1414       make them 2D (FICE/QNETO/ ...)
1415     - remove FO (it is the same as QNETO)
1416     - introduce a few local fields to avoid modifying external fields such
1417       as atemp, etc.
1418    
1419    checkpoint58s_post
1420    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
1421      changed exf_set_gen.F so that
1422        genperiod=0 means input file is one time-constant field and
1423        genperiod=-12 means input file contains 12 monthly means
1424    o CG2D: use pre-computed solver main-diagonal (stored in common block);
1425      this affects truncation error ; generate new output file for exp. which
1426      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
1427        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
1428        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
1429        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
1430        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
1431        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
1432    o start implementation of deep-atmosphere and anelastic formulation
1433    o verification: remove 2nd copy of input files and use script "prepare_run"
1434      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
1435    o mom_common/vecinv/fluxform: fix a few initialisation isssues
1436    o profiles: fix for multithreaded case
1437    
1438    o diagnostics: rename few diags:
1439      s/'PRESSURE'/'RCENTER '/g
1440      s/'TICE    '/'oceFreez'/g
1441      s/'TAUX    '/'oceTAUX '/g
1442      s/'TAUY    '/'oceTAUY '/g
1443      s/'SWFLUX  '/'oceQsw  '/g
1444      s/DIFx/DFxE/g
1445      s/DIFy/DFyE/g
1446      and add few ocean-forcing diagnostics:
1447      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
1448    o modifications to pkg/seaice/growth.F and budget.F, which change results of
1449      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
1450      as actual snow thickness.  It now refers everywhere to effective snow
1451      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
1452    
1453    checkpoint58r_post
1454    o modifications to pkg/seaice/growth.F, which change results of
1455      lab_sea experiment: fixes pertain to melting snow over open water, to
1456      masking EVAP under sea ice, and to using the correct AREA variable for
1457      computations of EVAP, PRECIP, HSNOW, and GHEFF
1458    o add ability to read bathy, salt, and theta using MNC (off by def)
1459    o add flooding algorithm and advection of HSNOW for pkg/seaice;
1460      both are turned off by default and do no change any results
1461    o seaice advection with pkg/thsice: a step toward the use of non-linear
1462      advection scheme, but #ifdef or commented out for now (requires more EXCH).
1463    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
1464      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
1465      in natl_box (affects results @ truncation level: update output.txt)
1466    o multi-threading and IO:
1467      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
1468      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
1469        (needed to work with SingleCpuIO): tested in all verif. exp.
1470    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
1471      affects the results (but none of the verification test uses this scheme).
1472    o Adding some pkg/diagnostics capability to pkg/seaice
1473      (will certainly be subject to changes)
1474    o ctrl: adding new control variables:
1475      lwflux, lwdown, evap, snowprecip, apressure, runoff
1476    
1477    checkpoint58q_post
1478    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
1479      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
1480      high_res_cube configuration by 4% on Columbia.
1481    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
1482      add (in global_with_exf/code) a version of EXF_INTERP_READ without
1483      dynamical allocation (seems to work in multi-threaded).
1484    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
1485      single CPU io) so that TAF does not have to see EESUPPORT.h
1486    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
1487    
1488    checkpoint58p_post
1489    o obcs: stop if obcs is used with useCDscheme = .true.
1490    o shelfice:
1491     - fix a sign error so that no slip at shelfice interface works
1492     - remove stop for combination non-hydrostatic code and shelfice. That does
1493       not mean, that the results are correct, but at least they are numerically
1494       stable
1495    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
1496    o added adjoint exch routined for all exch*3d* routines
1497      and updated flow directives
1498    
1499    checkpoint58o_post
1500    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
1501      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
1502    o change controling S/R for writing pickup file (new S/R do_write_pickup)
1503      and clean-up reading/writing of pickup files.
1504    o fix local version of read/write pickup (NH part) in rotating_tank/code
1505    o simplify EXCH interface:
1506     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
1507     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
1508    o added the regrid package
1509    o shelfice:
1510     - add a simple boundary layer scheme to reduce noise
1511     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
1512    
1513    checkpoint58n_post
1514    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
1515       local variable (not in common block).
1516    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
1517      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
1518      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
1519        to work with SingleCpuIO.
1520    o add "_d 0" to real constant of pkg/cfc subroutines ;
1521       update exp. cfc_exemple & tutorial_cfc_offline output files.
1522    o multi-threading and IO:
1523      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
1524        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
1525      - barrier before and after reading.
1526      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
1527      - avoid using MDS_WRITELOCAL for LAND pkg output.
1528      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
1529        common-block variables ; Allows multi-threading with master-thread IO.
1530    o change default MAX_NO_THREADS from 32 to 4 ;
1531      and stop cleanly when MAX_NO_THREADS is too small.
1532    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
1533    
1534    checkpoint58m_post
1535    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1536       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1537    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1538       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1539       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1540    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1541        add MITgcm_tutorials (= code + all the tutorials)
1542    o ecco, option to compute cost for total ssh (mean+anom)
1543    o consistent with addition of ptracer and ssh in pkg/profiles
1544    o profiles: adding ptracer and ssh
1545    o testreport: change multi-test output-file name
1546      (from output.txt.{name} to output.{name}.txt)
1547    o profiles: now ok for mutli-tiles case
1548    o seaice: add 4 parameters for different advection schemes for area,
1549      (effective) seaice thickness, enthalphy, and snow height. Their default
1550      is the standard parameter SEAICEadvScheme
1551    o calc_gw:
1552     - add cosFacU in zonal viscous flux (harmonic.visc.).
1553     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1554       of tutorial_plume_on_slope.
1555    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1556    o calc_gw: true flux-form, account for horizontal grid spacing.
1557      update rotating_tank results, but not plume_on_slope (affected at
1558      truncation level, 11 digits).
1559    
1560    checkpoint58l_post
1561    o calc_gw:
1562     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1563     - remove side-drag for now (need to fix it); update plume_on_slope results.
1564     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1565    o commit code to make SST/SSS weights spatially variable
1566      (based on either variable in-situ or variable initial T/S weights)
1567    o pkg/ecco:
1568      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1569        now based on horizontally varying weights wthetaLev, wsaltLev
1570      * cost_averagesflags now returns year indices in addition to day, month
1571      * sflux balance is performed on annual basis
1572        (sflxumm, sfluxmm2, bal_sfluxmm)
1573      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1574        including separate counting and multipliers
1575    o pkg/rbcs
1576      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1577    
1578    checkpoint58k_post
1579    o testreport:
1580     - always build in dir. "build" (if not there, mkdir build instead of building
1581       & running in input)
1582     - run in dir run (if it exists), in build otherwise.
1583     - call prepare_run (if input/prepare_run exists)
1584     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1585    o pkg/exf modifications to interpolation and rotation routines for more
1586       reasonable treatment of North Pole singularity: for tracers North Pole
1587       value is set to northernmost zonal-mean value, for zonal velocity it is
1588       set to zero, and for meridional velocity it is set to northernmost value.
1589    o pkg/exf/exf_check_range.F
1590     - add tile index to diagnostics and move stop statement to the very
1591       end of the routine.
1592    o pkg/diagnostics: (diagnostics_main_init.F)
1593      define title of isomorphic variables according to the current config.
1594    o pkg/thsice with pkg/seaice dynamics:
1595    - fix domain of computation (interior only, required for exf) and do exchanges
1596    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1597    o towards a standard way of dealing with multi-threading in MONITOR
1598      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1599    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1600       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1601    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1602    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1603    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1604       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1605    o tracer advection:
1606     - clean-up and simplify calc_common_factors.F
1607     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1608       advection subroutine (but still not used within DST advection S/R)
1609    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1610    
1611    checkpoint58j_post
1612    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1613      from file (collects calls previously in FORWARD_STEP)
1614    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1615    o adjoint store dir. adjusted accordingly
1616    o genmake2
1617      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1618    
1619    checkpoint58i_post
1620    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1621      on wind stress (SEAICEstressFactor defaults to 1.)
1622    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1623      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1624    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1625      on CS-grid: no longer loosing mass.
1626    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1627    o pkg/ggl90: fix sloppy output and fix a bug
1628    o pkg/seaice: added SEAICEuseEVPpickup parameter
1629      - Set to false in order to start EVP solver with
1630        non-EVP pickup files when using SEAICEuseEVP
1631      - fix sign error in diffusion in seaice_calc_rhs
1632    
1633    checkpoint58h_post
1634    * Modifications for bottom topography control
1635      o replace hFacC by _hFacC at various places
1636      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1637      o add non-self-adjoint cg2d_nsa
1638      o update autodiff support routines
1639      o re-initialise hfac after ctrl_depth_ini
1640      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1641    * Adding verification for 5x5 box (4-layer) bottom topography control
1642    
1643    checkpoint58g_post
1644    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1645       used for mean seasonal cycle, mean diurnal cycle); add an example
1646       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1647    o pkg/ggl90:
1648      - add parameter (minimum surface kinetic energy)
1649      - fix bug (avoiding division by zero)
1650    o couple pkg/thsice to pkg/seaice:
1651      - modify advection in seaice to accomodate new scalar fields to be advected
1652      - only muliDimAdection scheme work with seaice/thsice
1653      - mapping of thsice-variables to seaice-variables, back and forth
1654      - does not break the verification experiments, but does not give the
1655        desired results either
1656    o pkg/seaice
1657      - make (default) second order advection a bit less confusing?
1658    
1659    checkpoint58f_post
1660    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1661      to pkg/seaice):
1662      - new routines thsice_map_exf and thsice_get_exf provide the interface
1663      - add an additional formal parameter to thsice_solve4temp
1664    o pkg/exf:
1665      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1666      - correct Stefan-Boltzmann constant
1667      - new parameter for longwave surface emittance
1668      - separate some stuff from exf_bulkformulae into new routines  
1669        exf_radiation, exf_wind
1670      - add new parameters and constants: longwave emissivity for ocean, ice
1671        and snow, evaporation parameters over ice
1672      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1673        either wind from stress or stress from wind
1674    o pkg/thSIce:
1675    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1676    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1677       and THSICE_CALC_THICKN
1678    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1679    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1680      to make debugging easier.
1681    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1682    o pkg/bulk_force:
1683      - clean-up comments and parameters ;
1684      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1685    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1686      generate new output for test-experiment: aim.5l_cs.thSI
1687    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1688      testreport accordingly
1689    
1690    checkpoint58e_post
1691    o SEAICE_CGRID adjoint done
1692    o R_STAR adjoint implemented.
1693      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1694      * need to sort out init. of h0facc, etc.
1695    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1696      to be able to use it in pure forward.
1697    
1698    checkpoint58d_post
1699    o upgrade simple test-experiment to tutorial example:
1700     step.1: duplicate the experiment and (step.2) will remove the old copy.
1701      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1702      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1703      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1704      tutorial_global_oce_biogeo    <- copy of dic_example
1705      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1706      tutorial_plume_on_slope       <- copy of plume_on_slope
1707      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1708      tutorial_global_oce_optim     <- empty for now (David ?)
1709      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1710     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1711    o correct a sign problem in cost_scat.F
1712    o obcs and ptracers: fix boundary conditions for advections schemes
1713      with larger stencil
1714    o thsice adjoint: start
1715    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1716      completeness
1717    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1718      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1719    o ptracers adjoint:
1720      * avoid extensive recomputatations
1721      * fix missing re-init. of gptr (missed by TAF)
1722    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1723      me to turn off the excessive output to STDOUT that this package produces
1724    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1725      and add those terms in Vector-Invariant formulation.
1726    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1727      if the control period (xx_hfluxperiod etc) is 0
1728    o in profiles pkg, clean routines and fix details
1729    o in ecco pkg, reading ssh data:
1730      fix problem in case the model does not start at iter0=0
1731    o fix mnc-pickup/restart for ptracers
1732    o new package prifiles:
1733      code to compute profile-based cost by Gael Forget
1734      (modifs in ecco, ctrl, autodiff)
1735    o Benign bug fix in initialization (spotted by M. Mazloff) of
1736      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1737    
1738    checkpoint58c_post
1739    o adjoint: finish NLFS adjoint and provide reference output in
1740      verification/global_ocean.90x40x15/results_ad_nlfs
1741    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1742      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1743      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1744      with SEAICE_CGRID defined.
1745    o move calendarDumps from "data" to "data.cal" and clean-up the code
1746      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1747    o add useEXF & useCAL flags (for now, set in hard-coded way)
1748    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1749      (were missing in NH mode, and wrong in quasihydrostatic mode).
1750      waiting for Chris updated version of calc_gw to add those CALLs.
1751    o fix bug in quasihydrostatic S/R ;
1752      add a test for this option: global_ocean.90x40x15.qshyd
1753    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1754      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1755    o add on/off flag useOffLine for package OFFLINE
1756    o seaice:
1757      - modify advection so that it works also on the C-grid
1758      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1759        problem in multi-tile runs with C-grid
1760      - add flags for clipping ice velocities and/or masking solver forcing
1761      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1762        C-grid solver
1763      - added a few comments to seaice_diffusion.F
1764      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1765        are now exclusive)
1766      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1767        required re-ordering the code a little:
1768       + make DAIRN global variable (defined in SEAICE)
1769       + move computation of the viscosities eta and zeta into a new separate
1770         routine (because I need to recompute them in seaice_ocean_stress.F)
1771    
1772    checkpoint58b_post
1773    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1774      update output.txt of exp. aim.5l_cs.thSI
1775    o various mnc cleanups and improvements:
1776      + shrink lookup tables by factor of ~4
1777      + better error reporting when running out of lookup space
1778      + able to handle longer path/file names (up to 500 chars)
1779    o adjoint:
1780      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1781      - TBD: "hidden" mom_vecinv recomp. in dynamics
1782    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1783     (allow to differentiate between forcing components using new integer flags:
1784      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1785     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1786    o ecco
1787      - enable trend removal from SSH anomaly obs.
1788    o adjoint
1789      - a fix for PmEpR when #undef EXACT_CONSERV
1790      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1791      - try to fix "hidden" recomp. in forward_step for NLFS
1792        (NLFS seems broken sometimes after I checked it in)
1793    o seaice:
1794     - add c-grid version of the dynamic solver:
1795       + three new routines that are the c-grid substitute lsr, dynsolver
1796         and ostres
1797       + put a few fields that were local to dynsolver into global common
1798         blocks, so that I can move the computation of stresses etc into
1799         seaice_lsr (saves coding but may break the adjoint).
1800     - replace more hardwired parameters by runtime parameters
1801     - add ice masks that mask the rhs of the implicit solvers where there
1802       is no ice (commented out in seaice_dynsolver, because i am not sure
1803       if this works properly), eventually this should replace the clipping
1804       of ice velocities in seaice_dynsolver to +/-40cm/s.
1805    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1806      include it only where its needed
1807    o move balancing of fluxes before the call of external_forcing_surf
1808    o seaice:
1809      - correct units of turning angles (now they are really in degrees)
1810      - move computation of GWATX/Y out of main routine into dynsolver
1811      - initialize GWATX/Y in seaice_init
1812    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1813      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1814    o seaice: add runtime flags for turning angles (default to zero)
1815    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1816      and trend from exf forcing and ctrl control adjustments
1817    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1818      (since checkpoint57x_post)
1819    o change the default rotation period to 86164.s = the Earth rotation
1820    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1821      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1822    o seaice advection: add code for choosing between the default (2nd order
1823      central differences) and multiDim advection schemes provided by
1824      pkg/generic_advdiff
1825    o seaice:
1826      - removed all references to SEAICE_GRID.h fields from
1827        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1828        (cubed-sphere configuration will change a little)
1829      - grid computations in seaice_init are obsolete now.
1830      - cleaned up code a little so that is easier to read (hopefully).
1831      - added new (better?) discretizations of default advection and diffusion
1832        (turn on with SEAICEuseFluxForm)
1833      - replace 1 in 3d global fields by kSurface in growth.F
1834      
1835    checkpoint58a_post
1836    o seaice:
1837      - bug fix in advect.F
1838    o shelfice:
1839      - separate shelfice load anomaly from pload (breaks with time
1840        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1841        Its default is 0., but it may be computed more cleverly from (unknown)
1842        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1843        done offline. A good approximation of the pressure load anomaly is
1844        necessary to avoid large initial adjustment processes underneath
1845        deep-reaching shelfice.
1846      - small fix in ISOMIP shelfice_thermodynamics
1847      - add more sophisticated thermodynamics of Hellmer (1989), this is
1848        now the default
1849      - give a few constants more intuitive names
1850    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1851      if bulk formulae are used in long integration (especially EmPmR). Turn
1852      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1853      if balancePrintMean, the imbalance that is substracted is printed to
1854      STDOUT.
1855    o fix bug (typo) in obcs_apply_eta.F
1856    o add a new package shelfice which enables us to model the circulation
1857      underneath shelf-ice with draughts of hundreds of meters.
1858     - works
1859     - to do: + include improved thermodynamics
1860              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1861                instead of new field kTopC
1862              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1863                instead of new field R_shelfIce and new code in ini_depth.F
1864                and ini_mask_etc.F?
1865              + adjust vertical mixing schemes?
1866    o seaice pkg:
1867     - add a cpp-flag to include a simple formula for a salinity dependent
1868       freezing point of sea water at the surface
1869     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1870       meridional stresses are now different (and hopefully correct)
1871    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1872       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1873       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1874    o pkg/diagnostics: add options and parameters for regional-statistics
1875       diagnostics ; define regions by reading a region-mask from a file
1876       (might add other options later)
1877    o pkg/bulk_force:
1878     - add option and parameters to use AIM surface-flux formulae.
1879     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1880       others forcing fields (defined in PARM05, parameter file "data") are loaded
1881       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1882     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1883     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1884     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1885       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1886     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1887    
1888    checkpoint58
1889    o add "--embed-source" option to genmake2 which, when the supporting
1890      tools can be compiled (as determined by genmake2) will turn on the
1891      embed_files package which then embeds the entire MITgcm source code
1892      (*.[fFhc] + Makefile) used for the build within the executable
1893      - requested by CNH but off by default
1894      - adds a paltry <9MB to the mitgcmuv executable in most cases
1895      - only writes the output when useEMBEDSRC in eedata is true
1896    o clean up 3-dim. relaxation codes:
1897      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1898      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1899      * Thanks to Tom Haine for testing!
1900    
1901    checkpoint57z_post
1902    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1903      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1904    o fix the pickup behavior for obcs in combination with ptracers
1905    o fix a bug in ptracers_external_fields_load
1906    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1907      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1908    o transfered surface NH pressure to eta field (if exactConserv).
1909    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1910         and update lab_sea output.txt file.
1911    o completing 3-dim. relaxation code: additional term
1912         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1913      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1914      * At compile time, in "EXF_OPTIONS.h" set
1915          #define  ALLOW_CLIMTEMP_RELAXATION
1916          #define  ALLOW_CLIMSALT_RELAXATION
1917      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1918          tauThetaClimRelax3Dim = 15552000.0,
1919          tauSaltClimRelax3Dim  = 15552000.0,
1920      * 3 cases:
1921          1) Use a constant-in-time 3-dim. field
1922          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1923          3) Real-time relax. to time-evolving prescribed field
1924    o Adding Laplacian-type smoothness constraint on
1925      initial and boundary (forcing) controls (ic, bc)
1926      * enable at compile-time via
1927        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1928      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1929      * Absolute scale somewhat unclear so far
1930      * no area weighting was included since no other cost term does so far
1931    
1932    checkpoint57y_post
1933    First step for a NLFS adjoint
1934    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1935    o new init. routines for calc_r_star, calc_surf_dr
1936    o still need to deal with ini_masks_etc
1937    o testreport seemed happy
1938    checkpoint57y_pre
1939    
1940    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1941    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1942    o add new offset feature to offline pkg (plus minor cleanup)
1943    o cfc fixes for final year of integration
1944    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1945      be in GCHEM_OPTIONS).
1946    
1947    checkpoint57x_post
1948    o fix testreport Pb in multiple test experiment.
1949    o cleanup our namelist syntax in verification:
1950      - make it more F95 standards compliant (some work still needed)
1951      - allows the vast majority of our tests to work with gfortran
1952    o Non-Hydrostatic:
1953     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1954     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1955    o Allow to apply AB on T,S rather than on AB(gT,gS):
1956     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1957     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1958       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1959     - need a "clever" read_pickup to restart from the other AB formulation
1960    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1961    o remove some unused variables (reduces number of compiler warnings)
1962    o adjoint
1963      * Disable useVariableViscosity for adjoint for time being
1964        (there are a number of extensive recomputations)
1965      * Initialize certain variables needed for adjoint
1966    
1967    checkpoint57w_post
1968    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1969                 fix the singleCpuIO RS version of MDSWRITEFIELD
1970       and add a WARNING if using globalFiles=T with multi-processors.
1971    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1972      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1973    o tracer advection scheme:
1974      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1975       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1976       was not very convenient).
1977      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1978       (further tests needed for the implicit DST & Flux-Limiter schemes).
1979    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1980      and sRef for convenience, handy, when you want to initialize
1981      ptracers in a large domain with a constant non-zero value. Also,
1982      untangle ptracers_init.F a little.
1983    
1984    checkpoint57v_post
1985    o change dome exp. to use variable viscosity in side-drag terms.
1986    o remove all the files from the cfc_offline test since they are now
1987      incorporated into tutorial_cfc_offline which has been producing
1988      identical results for a few days of testing
1989    o add new parameter: sideDragFactor to enable half-slip-side BC
1990      and change side-drag S/R to use viscosity from mom_calc_visc
1991      (can switch back by setting sideDragFactor=0.); affects results at
1992      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1993       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1994    o vorticity & strain are now computed without masking, to account for
1995      no-slip-side BC in variable viscosity calculation ; mask is applied
1996      anyway later on, before computing advection/coriolis terms.
1997    o modify exp4 to test new obcs support for reading from external files
1998      and for passive tracers
1999    o fix behavior of ptracers_monitor when monitor output is written to a
2000      netcdf-file; still not independent of monitor.F (writes in the same
2001      file).
2002    o change default value of tRef (put a uniform, meaningful value for ocean
2003      & atmos) and initialize sRef (was missing, as Martin mentioned).
2004    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
2005      to be proportional to enstrophy dissipation length.  Thus,
2006       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
2007      This is now consistent with Smagorinsky and with the manual.
2008    
2009    checkpoint57u_post
2010    o OBCS and PTRACERS: add open boundary support for passive tracers
2011      - either use homogenous (pseudo) v.Neumann conditions or prescribe
2012        OB-values from file; this is not different from the way theta and salinity
2013        are treated
2014      - however, Orlanski-radiation conditions are not supported, and the model
2015        will stop if you use pTracers and Orlanski at the same time.
2016      - beefed up the rountine obcs_external_fields_load: now only those open
2017        boundary values are overwritten with values from files for which there
2018        are really files, otherwise the OB-fields remain untouched. This makes
2019        it possible to use different OBs at different ends of the domain (as
2020        with EXF)
2021    o reduce number of exch calls in shap_filt (s2).
2022    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
2023      truncation level) 4/5 MLAdjust test results (11&12 digits match).
2024    
2025    checkpoint57t_post
2026    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
2027    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
2028      same truncation, independent of the face number: affects affects several
2029      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
2030    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
2031      note that biharmonic viscosity + no-slip was not tested in any experiment.
2032    o fix bug in non-linear free-surf side-drag ; generate new output for
2033      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
2034    o make mnc honor the writeBinaryPrec flag for most kinds of output
2035    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
2036    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
2037      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
2038    o add brackets in multi-terms sum to get same truncation, independent of
2039      the face number (manage to get exactly same value of gU,gV at the cs-edge)
2040      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
2041    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
2042      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
2043      a maximum grid-scale Reynolds number.  Also, changes all length calculations
2044      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
2045      Suggested values of viscosity parameters found in mom_calc_visc.
2046      Many new viscosity diagnostics available.
2047    
2048    checkpoint57s_post
2049    o Add clearing-house for viscosity calculations, mom_calc_visc and
2050      correct numerous bugs in LeithD and Smagorinsky discretizations.  
2051      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
2052      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
2053      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
2054      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
2055      The Strain-Tension form is now called with useStrainTensonVisc=.true.
2056      ViscAhStrain and viscAhTension are now retired.
2057    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
2058    o In response to JMC's bug report, genmake2 now ignores any soft-links
2059      that it finds in the *current* directory when searching for files.
2060      Soft-links found in any other source directories will still work as
2061      they did before.
2062    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
2063      a C routine to unlimit the stack size
2064    o mnc-ify pkg/aim snapshot vars
2065    o mnc-ify pkg/land as requested by Daniel
2066    o various changes to mnc including:
2067      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
2068      - output can now be grouped so that all files within a group
2069          change the ITER portion of their names in lock-step together
2070      - can now read ("global") PER-FACE (in addition to PER-TILE) files
2071          and works with both EXCH1 and EXCH2 (but needs more testing)
2072      - writing works for all verification test cases w/ g77 on Linux
2073    
2074    checkpoint57r_post
2075    o make MNC variable initialization happen earlier
2076    o add diagnostics for (almost) each term of the momentum Eq.
2077    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
2078    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
2079    o remove MINIMAL_TAVE_OUTPUT option ;
2080      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
2081    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
2082      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
2083    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
2084    o add time-dependent SST, SSS control
2085    o cost terms in ecco/ modularized (new cost_generic.F)
2086    o cost_averages routines are modularized (new cost_averagesgeneric.F)
2087    o new infrastructure for seaice model vs. obs misfits in seaice/
2088      * driver from the_main_loop.F is seaice_cost_driver.F
2089      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
2090      * gradient check in Exp. 6a of natl_box_adjoint/
2091    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
2092      (see README file)
2093    
2094    checkpoint57q_post
2095    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
2096    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
2097      - bug was reported by Jean-Michel and Ian Fenty
2098    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
2099      update exp. cpl_aim+ocn output.
2100    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
2101      Needed for high-res. runs with large global files
2102      to be able to limit tapelev size
2103    o Changed some tests for adjoint:
2104      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
2105      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
2106      * global_ocean.90x40x15/ back to default 3-level checkpointing
2107    o Modifications to enable scripted COMMON to MODULE conversion
2108      * verification/OpenAD/code/ has necessary scripts and description;
2109      * converts, compiles and runs successfully;
2110    
2111    checkpoint57p_post
2112    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
2113    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
2114      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
2115    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
2116    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
2117      (was already the case for dissipation with mom_vecinv,
2118       and also the case for grad.PhiHyd when staggered-timeStep)
2119      This will allow to put dissipation out-off the AB time-stepping.
2120     Unfortunately, affects truncation error. Update output of exp. that "fails"
2121      (cg2d matching number) and leave the others for later: front_relax(10),
2122      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
2123      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
2124    
2125    checkpoint57o_post
2126    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
2127      (2) its ready to be documented during the 20050801 DocFest
2128    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
2129      for ideal_2D_oce and lab_sea on linux_ia32_g77
2130    o set to #undef CTRL_SET_OLD_MAXCVARS_30
2131      in global1x1_tot/code_seaice_adj to access indices 32, 33
2132      (worth another tag)
2133    
2134    checkpoint57n_post
2135    o adding precip control xx_precip 32
2136    o adding swflux control xx_swflux 33
2137    o Replacing 10 forcing penalty cost routines by 1 generic.
2138    o Implementing partitioning in time-mean and variable adjustment
2139      for atmos. state.
2140    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
2141    o in natl_box_adjoint:
2142      * updated exp 1 to 10
2143        (but does not have time-mean vs. variable split results yet)
2144    o updated global1x1/*_seaice_adj/
2145      to incorporate latest changes
2146    o enable useSingleCpuIO for mdsio vector routines
2147      (applies in particular to tapelev I/O)
2148    o removed inefficient K-loop in all active_file*control*.F
2149    
2150    checkpoint57m_post
2151    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
2152      and advect_cs (use EXCH-2 and standard cs-32 grid files).
2153    o pkg/exch2: filling of face-corner halo regions is optional
2154      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
2155    
2156    checkpoint57l_post
2157     tag before updating tutorials (pre-release-2)
2158    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
2159       for output and interpolation of input fields onto model grid)
2160    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
2161       Affects results of exp. rotating_tank ; update output.txt.
2162    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
2163          and taking the square quantity and/or using a fraction-weight field.
2164    o fix aim_diagnostics_init.F mate numbers.
2165    o add mnc output capability to diagnostics/diagstat and update
2166      our cvsignore files for the ACSII output generated
2167    
2168    checkpoint57k_post
2169    o lab_sea now uses diagnostics package and provides a suite of
2170      new EXF diagnostics output.
2171    
2172    checkpoint57j_post
2173    o exf
2174      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
2175        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
2176        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
2177      * extended diagnostics output
2178        - now includes all EXF variables
2179        - hs, hl moved to common block
2180        - separate S/R for diagnostics, called after ctrl vector is added
2181        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
2182        - EXFqnet contains true Qnet (i.e. includes qsw)
2183      * updated verif. lab_sea, global_with_exf
2184      * Rearranging hflux (exf_mapfields -> exf_getforcing)
2185        to ensure that diagnostics sees a true EXFqnet
2186    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
2187    o diagnostics pkg: change pointers so that 1 diagnostic can be used
2188      several times with different frequencies.
2189    o mnc-ify the thsice package as requested by Daniel Enderton
2190      - the monitor--MNC output needs work
2191      - many attributes need to be added (most are currently blank)
2192    o mnc-ify theaim_v23 package as requested by Daniel Enderton
2193      - many attributes need to be added (most are currently blank)
2194    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
2195    o add Sadourny like discretization to the 4th.O vorticity advection scheme
2196    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
2197      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
2198         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
2199    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
2200     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
2201    
2202    checkpoint57i_post
2203    o Diagnostics package was changed: diagnostic allocation is now deactivated
2204      by setting an empty file name in the namelist (used to be by setting 0 frequency)
2205    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
2206      add 1rst Order upwind vertical Shear.
2207    o add a quick fix for A/B checkpointing in OFFLINE mode
2208    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
2209      end-run around the C/Fortran linking horror in eesup/src/timers.F
2210    o added pkg/runclock: allows user to terminate run based on wall clock
2211    o added non-hydrostatic scaling parameter: nh_am2
2212    o pkg/my82: futile attempt to make results compiler-independent by adding
2213      some "_d 0", etc. no effect.
2214    o for mnc output, fill the 'T' coordinate var with myTime and create a
2215      separate 'iter' variable for iteration count
2216    o pkg/diagnostics:
2217      add new capability: output of Global/Regional & per-level statistics ;
2218      tested against monitor output (including land & thSIce) on various exp.
2219    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
2220    
2221    checkpoint57h_done
2222      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
2223      data.diagnostics, data.gchem, data.ptracers) is done.
2224    
2225    o pkg/diagnostics: prepare for Global/Regional statistics.
2226      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
2227    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
2228      and rename it: DIFFERENT_MULTIPLE
2229    
2230    checkpoint57h_post
2231    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
2232    o pkg/diagnostics: change output frequency, now in seconds (instead
2233      of Nb of iterations). This requires to change data.diagnostics.
2234    checkpoint57h_pre
2235    
2236    o in mnc, let the user create the output dir if both mnc_outdir_date
2237      and mnc_outdir_num are false
2238    o add fflags() to pkg/diagnostics which allows one to specify, on a
2239      per-file basis, the file precision [default behavior is unchanged]
2240    o added diagnostics to pkg/kpp, including computation of mixed layer
2241      depth based on a temperature/density criterion
2242    o updated verification/natl_box to test the new pkg/kpp diagnostics
2243    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
2244    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
2245    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
2246      not mnc -- this mistake was found by JMC and is now corrected
2247    
2248    checkpoint57g_post
2249    o add Adams-Bashforth 3rd Order time stepping:
2250      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
2251      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
2252    checkpoint57g_pre
2253    
2254    o make lambda[Theta,Salt]ClimRelax spatially varying
2255      (default remains spatially uniform constant based on tau)
2256    o added new control variables
2257      * init. uVel, vVel, etanN
2258      * lambda[Theta,Salt]ClimRelax
2259    o separate masks used for ctrl_pack/unpack 'from write_grid' output
2260      (suggested by G. Forget)
2261    
2262    checkpoint57f_post
2263    o add parameter "baseTime" = model base time = time at iteration zero
2264      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
2265      account for baseTime shift
2266    o move Coriolis arrays from PARAMS.h to GRID.h
2267    checkpoint57f_pre
2268    
2269    o mnc-ifying the seaice package
2270    o introduced an alternative length scale calculation for use in the limiting
2271      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
2272    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
2273    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
2274      as well as grad(vort3).  Made it compatible with both approximate form
2275      for the cubed sphere and full form of these gradients.  Added flag
2276      useFullLeith to select between approximate and full form.  
2277    o add "d0" in getcon.F to reduce differences between compilers/platforms
2278      update output.txt of exp. fizhi-gridalt-hs
2279    o change port_rand funtion to allow to set the seed.
2280    o fix obscure MNC bug involving conversion between reals and integers
2281      - it caused no problems with certain (eg. gcc, ifc) compilers but the
2282        new version is now more standards-compliant
2283    o adjoint-related modifications
2284      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
2285      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
2286      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
2287    
2288    checkpoint57e_post
2289    o Adding eddy stress controls a la Ferreira et al.
2290    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
2291    
2292    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
2293      update output.txt of exp. fizhi-gridalt-hs
2294    o add more "Z" dimensions and associated coordinate vars to MNC
2295    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
2296    o parameter calendarDumps: when set, approximate months (30-31 days) and years
2297      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
2298      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
2299      months and years.  Requires pkg/cal.
2300    o diagnostics: add pickup functionality
2301      - off by default for backwards compatibility
2302      - current version only uses MDSIO -- MNC will be added
2303    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
2304    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
2305    
2306    checkpoint57d_post
2307    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
2308    o modify verification/ideal_2D_oce so that it tests the creation of mnc
2309      output from the diagnostics package
2310    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
2311    o make genmake2 more portable by using ".$FS" instead of ".f" for more
2312      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
2313    o add coordinate variables to the MNC output from the diagnostics package
2314    o change MNC-flags default value: true when useMNC=TRUE
2315    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
2316      the ability (off by default) to read the grid information using MNC
2317    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
2318    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
2319    o do snap-shot diagnostics at the middle of the time-interval (instead of
2320      at the end).
2321    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
2322      new test for AIM with thSIce + slab-ocean
2323    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
2324    o move state variable diagnostics to the beginning of the time step ;
2325      (note: still needs some work specially for snap-shot diagnostics)
2326      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
2327    
2328    checkpoint57c_post
2329    o Change testing option (-ieee) to get closer agreement between g77 & ifort
2330    o generate new output.txt files on faulks with g77 & the new -ieee option
2331    checkpoint57c_pre
2332    
2333    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
2334      update output.txt of exp. global_ocean.90x40x15
2335    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
2336      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
2337    o add saltFlux(+File) forcing capability with periodicExternalForcing
2338    o allow to use pkg diagnostics for GM-Redi & ThSIce output
2339    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
2340    o improvements for the MNC output from DIAGNOSTICS:
2341      - correct handling of the unlimitied dimension
2342      - all dims now have associated coordinate variables
2343      - variables located at U, V, and Corner ("Z") points are now written
2344        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
2345        *all* data points are output
2346    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
2347    o added pkg/seaice/seaice_monitor.F
2348    o mdsio_readfield.F can now read files visible only to master MPI process.
2349    o pkg/seaice: some test code for ice-modified ocean stress
2350    o exf_getffields interpolation defaults to bilinear for all scalar forcing
2351      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
2352      spurious negative numbers for precipitation and humidity.  Will cause
2353      some small numerical differences for integrations using pkg/exf/exf_interp.F.
2354    o pkg/ctrl/
2355      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
2356        May be enabled via doPackDiag
2357      *  introduce z-scaling of
2358         + gradient (doZscalePack) and
2359         + control (doZscaleUnpack)
2360    o pkg/mdsio/
2361      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
2362      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
2363    
2364    checkpoint57b_post
2365    o simplify options in diagnostics_fill arguments (remove weird combinations)
2366    o fix MNC coordinate variables so that they now contain per-face index
2367      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
2368      general, EXCH2 grids are only aligned to a "local" coordinate system
2369    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
2370    o Implement instantaneous output within pkg diagnostics:
2371      setting a negative frequency in data.diagnostics produces
2372     "snap-shot" output (as opposed to time-average if freq > 0)
2373    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
2374      NOTE: change ptracer diagnostics name: use 2 characters to work with
2375            more than 9 tracers. Add also diagnostics of advect & diffus flux.
2376    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
2377      becomes the coordinate variable for the 'T' dimension
2378    o add CF-style coordinate variables to MNC
2379      - just a first cut:  numbers are meaningless on the cubesphere and
2380        missing along the T axis but otherwise it works!
2381    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
2382    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
2383    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
2384      this is based directly on what the model compute, so that the content of
2385      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
2386    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
2387    o clean up build options files for SunOS, in particular
2388      - remove -traditional from xmakedepend
2389      - change -xarch=v9 to -xarch=native for f77
2390      - restore use of make (not gmake)
2391      - add CC=gcc if using g77
2392    o changes per discussion of AM, JMC, & EH3 today:
2393      - move redundant "grid" variables out of "state" -- in preparation of
2394        creating proper CF-style coordinate variables and in recognition
2395        that any/all grid variables can be easily copied (eg. w/NCO) from
2396        the grid files into any of the other NetCDF files
2397      - *always* output grid variables with MDSIO (this will eventually be
2398        changed)
2399      - output MNC grid file if useMNC is true
2400    o every instance of _END_MASTER() has been found and replaced with
2401      _END_MASTER( myThid ) in order to satisfy certain picky Sun
2402      preprocessors
2403    o re-arrange diagnostics pkg initialisation:
2404     - allow each package to extend the available diagnostics list
2405     - add some checking and fix small problems (multi-threaded, ...)
2406     - new S/R diagnostics_fill (replace fill_diagnostics):
2407       look through the short list of active diag. (instead of the long list)
2408       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
2409    
2410    checkpoint57a_post
2411    o this set of changes restores TAMC compatibility
2412      tested for global_ocean.90x40x15 adjoint on trough
2413      (what a pain)
2414    
2415    checkpoint57a_pre
2416    o some modifs in tools/build_options for sunos
2417    o call ctrl_pack for ctrl at end for optimcycle=0
2418    
2419    checkpoint57
2420    o add horizontal bi-harmonic viscosity for vertical velocity
2421      - new parameter viscA4W (defaults to viscA4)
2422      - affects only non-hydrostatic code
2423      - to be done: no-slip lateral boundary conditions
2424    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
2425    o implement Implicit Vertical advection for pTracers
2426    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
2427      (implemented also for implicit vertical diffusion & advection)
2428    o OBCS: extend application of tracer open boundary conditions
2429      to a strip beyond the boundary of width Olx/Oly
2430    o add call monitor to TAF set of required calls (flow directives)
2431      and include in natl_box_adjoint
2432    o untangle a few ifdefs related to cost, ctrl, autodiff
2433      untangel a few ALLOW_ECCO_OPTIMIZATION
2434    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
2435      (theta2, salt2 in ecco_cost_weights)
2436    
2437    checkpoint56c_post
2438    o OBCS as control variables
2439      - update ctrl_ad_diff.list, obcs_ad_diff.list
2440      - remove balance of obcs controls from default
2441      - fix index bug nobcs in ctrl_init
2442      - fix dummy fields filen in ctrl_pack
2443      - add dummy weights for obcs
2444    o lsopt: comment out fort.94 output
2445    o optim:
2446      - remove unnecessary header files
2447      - adjusted namelists
2448      - add xerbla.F to Makefile
2449    o exf:
2450      - multiple modifications of exf_check_range
2451      - unit change in exf_init_runoff from [m/year] to [m/s]
2452    o mdsio:
2453      - i/o-vector change debugLevel from debLevA to debLevB
2454    
2455    checkpoint56b_post
2456    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
2457      is called from DO_THE_MODEL_IO
2458      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
2459      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
2460      - clean up PTRACERS_WRITE_TIMEAVE a little
2461    o add another verification experiment that tests both the cfc-pkg and
2462      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
2463      reactive tendencies treated inline with regular timestepping
2464    o testreport previously did a lousy job of comparing small numbers, so
2465      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
2466      implemented in the little c-progam tmp_cmpnum.c which is embedded in
2467      testreport.
2468    o ptracers_monitor: bug fix for MPI
2469    
2470    checkpoint56a_post
2471    o GCHEM: finish reorganizating the package
2472      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
2473        (introduces another 3D-array for each passive tracer, but only if
2474        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
2475        gchemTendency is not needed because the timestep is done separately)
2476      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
2477      - GCHEM is now---more or less cleanly---separate from PTRACERS
2478      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
2479        so clear to me how that should be done in a general way.
2480    o CFC: improve formatting of output in CFC_ATMOS
2481    o PTRACERS:
2482      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
2483        that ALL experiments with ptracers enable can be checked. This makes
2484        GCHEM_MONITOR obsolete.
2485      - include a runtime parameter PTRACERS_monitorFreq that defaults to
2486        monitorFreq
2487      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
2488    o add PTRACERS (PTR0[1-5]) to testreport output
2489    o exf_check_range:
2490      * default changed to .TRUE.
2491      * will check values for niter0 if debLevA, every timestep if debLevB
2492      * STOP in exf_check_range if 'out of range'
2493      * range chosen generous to allow for potential extema
2494      TBD: a version with stricter range
2495           permitted range would be runtime parameters
2496    o GMredi:
2497      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
2498      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
2499      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
2500    o GCHEM:
2501      - move call to GCHEM_FORCING_SEP, so that it is now called before
2502        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
2503      - introduced a useGCHEM runtime flag and applied it everywhere.
2504      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
2505        this flag is now only visible within GCHEM-pkg routines.
2506      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
2507        be replaced by a 3D array that is computed before thermodynamics; for
2508        this, the tracer ID iTracer had to be included into the parameter list
2509        of ptracers_forcing
2510      - set up forward_step to call gchem_forcing, that will replace
2511        gchem_forcing_int in ptracers_forcing
2512      - cleaning up
2513    o small cleaning of exch2: remove files that are also in eesupp/src
2514    
2515    checkpoint56
2516    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
2517    o mnc: cleanup "full" files--fixes out-of-memory problem
2518    o ECCO-GODAE
2519      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
2520      * fully merged and updated from SIO code
2521        windstress sign change affects
2522        - exf_inscal_[u/v]stress
2523        - sign of xx_tau[u/v] adjustments
2524        - signs in cost_scat
2525      * ctrl_get_gen: avoid update of tau[u/v] for first few days
2526      * natl_box_adjoint updated and compressed
2527      * 2-level checkpoint switch added
2528        (tested in EXP. 1 of natl_box_adjoint)
2529      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
2530    o SVD
2531      * first complete, non-hacked version for SVD calculations
2532      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
2533        performed via direct access files admtlm_vector.it????
2534        (via ctrl_[un]pack)
2535      * optimcycle is used for ARPACK iteration counter
2536        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
2537      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
2538        and add linear transforms where necessary
2539      * controls are initial/final SST, SSS (can be extended; need to check
2540        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
2541    o mdsio: filename info to both stderr, stdout
2542    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
2543      from sign change
2544    
2545    checkpoint55j_post
2546    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
2547      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2548    o add consistent build directories and .cvsignore files to verification
2549    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
2550    o make all subroutines 30 or less characters in length for certain older
2551      compilers to work (a thorough search only turns up two routines in
2552      pkg/ptracers)
2553    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
2554      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2555    
2556    checkpoint55i_post
2557    o change arrays for total vertical diffusivity (2.D if explicit,
2558      3.D if implicit) ; each ptracer uses its own background value.
2559    o added mnc/NetCDF output capability to ocn_compon_interf
2560      - added bits to verification/cpl_aim+ocn so that it can run on
2561        ITRDA and other clusters without the mpirun "-wd" option
2562    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
2563      configuration
2564    o give MNC the ability to create additional files rather than
2565      exceeding a specified file size limit "MNC_MAX_FILESIZE"
2566      - the default is just less than 2GB which is a practical limit
2567        on many systems
2568    o Compute the non-local term using either KPP vertical diffusivity (=default)
2569       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
2570    
2571    checkpoint55h_post
2572    o add verification test "vermix"
2573    o remove all the *_ioinc flags and replace with the single global
2574      outputTypesInclusive flag
2575    o allow to set a vertical profile of vertical diffusivity for T & S
2576    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
2577    o useMNC moved from data.mnc to data.pkg
2578    
2579    checkpoint55g_post
2580    o Renaming carbon AD experiments to comply with testreport conventions
2581    o Updating adjoint of Held-Suarez hs94.1x64x5
2582    o Fixing directives for non-ECCO forward_step, after ECCO directives
2583      have been fixed to avoid recomp. of do_oceanic_phys
2584      Works well for global_ocean.90x40x15,
2585      but recomp. issue remains for carbon
2586    o Updating adjoint output for natl_box_adjoint after
2587      pkg/ecco has been modified (see taga c55d_post)
2588    
2589    checkpoint55f_post
2590    o rename to timeave_init_fixed
2591    
2592    checkpoint55e_post
2593    o some delicate re-shuffle of store directives to avoid one
2594      extra call of do_oceanic_physics
2595      affects ecco_the_main_loop.F, do_oceanic_physics.F
2596      checkpoint_lev1_directives.h
2597    o NB: this may break global_ocean adjoint temporarily,
2598      but it is clear how to fix it. Will do later, need this now.
2599    
2600    checkpoint55d_post
2601    o ECCO specific cost function terms (up-to-date with 1x1 runs)
2602    o ecco_cost_weights is modified to 1x1 runs
2603    o modifs to allow observations to be read in as
2604      single file or yearly files
2605    o enable to read exf forcing fields as either
2606      single file or yearly files (flag useExfYearlyFields)
2607    checkpoint55d_pre
2608    
2609    o switch between 2-level and 3-level checkpointing
2610    o add ability of MNC to write local and "partial" (eg. 2D slices where
2611      the full 3D field is never actually stored) arrays to NetCDF files
2612      with the correct (that is, the complete multi-dimensional) set of
2613      array indicies
2614      - used in mom_vecinv() to write the diagFreq output
2615      - tested (demonstrated) in verification/aim.5l_cs
2616    o further mnc-ification
2617      - add verification/lab_sea to the list with mnc setups
2618      - fix undefined mnc v-names in cd_code
2619      - add kpp to mnc output (both snapshot and timeave)
2620    o non-hydrostatic code
2621      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
2622        in calc_gw.F
2623      - defaults to viscAh
2624      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
2625        friction or Leith) in non-hydrostatic mode, as long as there is
2626        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
2627    o pkg/cost
2628      extend simple cost functions to treat time mean quantities
2629      (T,U,V) via cost_accumulate_state from cost_tile
2630    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
2631        be 2 times larger than the minimum size the advection scheme requires.
2632        now get a perfect conservation of salt in advect_cs test-exp (updated)
2633    o GGL90 (Gaspar's TKE mixed layer)
2634      - add horizontal diffusion of TKE, requires exchanges in
2635        do_fields_blocking_exchanges, horizontal diffusivity is zero by
2636        default. In OPA there is no horizontal diffusion of TKE but the
2637        mixing coefficients are computed from a horizontal average of TKE of
2638        6 points or so. I think that diffusion has a little more physical
2639        justification.
2640      - clean up ggl90_calc in the hope of reducing memory usage (this hope
2641        was in vain)
2642      - mask tke-variable in ggl90_init
2643    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
2644    o fix biharmonic diffusion on CS-grid.
2645    o more obcs stuff
2646      - added obcs_external_fields_load as an alternative to the EXF-pkg option
2647        for reading boundary values. This routine is called from
2648        obcs_prescribe_read
2649      - updated obcs_check
2650      - changed sponge layer relaxation parameter units for days to seconds
2651      - turned off sponge layer by default
2652      - changed argument list of OBCS_CALC to myTime+deltaTclock
2653      - fixed about 35 bugs in obcs_external_fields_load
2654    
2655    checkpoint55c_post
2656    o obcs stuff
2657      - new runtime flags useOBCSprescribe, useOBCSbalance
2658      - re-arranged obcs_calc
2659      - moved exf_getobcs to obcs_prescibe_read
2660        obcs_prescibe_read is called after ORLANSKI stuff
2661        and independent of it (executable can contain all).
2662      - updated obcs_check
2663      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
2664        These may be necessary only if tangential velocities are
2665        prescribed at OB, not sure, needs testing.
2666    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
2667      which simplifies the calls and passes the ifc check-bounds test
2668    
2669    checkpoint55b_post
2670    o add a 2D scalar, Z location, exchange_2 routine.
2671    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
2672      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
2673      affects advect_cs results (for the wrong reason): update output.txt
2674    o use a more standard discretization for biharmonic viscosity ;
2675     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
2676      affects results of dome set-up: update output.txt
2677    o fix gad_advection.F (CubedSphere part), back to version 1.23
2678    o fix bug in mom_vi_del2uv.F (CubedSphere part).
2679    
2680    checkpoint55a_post
2681    o merged code to
2682      * prescribe/read time-dependent open boundaries
2683        (works in conjunction with exf, cal)
2684      * sponge layer code for open boundaries
2685      * each boundary N/S/E/W now has its own CPP option
2686        (healthy for the adjoint)
2687    
2688    checkpoint55
2689    o up-to-date adjoint of previous breaks
2690      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
2691      - global_ocean_ebm: adjoint still needs fix (TLM ok)
2692      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
2693      - carbon: * remove tr1-related adjoint verification
2694                * add ptracer as control variable
2695    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
2696      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
2697    
2698    checkpoint54f_post
2699    o in verification/carbin/ remove experiment related to
2700      ALLOW_PASSIVE_TRACER (array tr1 etc)
2701      code_ad/ input_ad/ results_ad
2702    
2703    o add two new packages
2704      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
2705        + subject to optimization (memory)
2706      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
2707        + subject to reordering (many GOTOs in the original code)
2708        + so far opps is called for every (i,j) point, and then operates in
2709          the vertical; one may want to reorder the scheme in order operate in
2710          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
2711          fields)
2712    o overhaul of IO so that we now have flags for MDSIO and/or MNC
2713      - all verification tests compile and run with linux_ia32_g77
2714      - defaults are compatible with current input files--nothing
2715        should change if you were not previously using MNC
2716      - MNC output has been added in numerous places (eg. timeave)
2717        but there are still a few writes not yet do-able with MNC
2718        (this is in progress)
2719      - flags now allow for either/or/both use of MDSIO and MNC and
2720        documentation will soon follow
2721      - numerous small formatting cleanups for ProTeX
2722    o add version info (via BUILD_INFO.h) to MNC and stdout
2723    
2724    checkpoint54e_post
2725    o add two new packages
2726      - pp81 (Packanowski and Philander, 1981), Richardson number and
2727        stratification dependent mixing
2728      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2729      - these scheme operate in a similar manner as KPP (without ghat, of
2730        course), however there is only one diffusivity that is used for both
2731        temperature and salinity (and passive tracers)
2732    o add offline package
2733    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2734      provided by Stephanie Dutkiewicz
2735    o genmake2: add ability to search for C compilers and cleanup test output
2736      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
2737    
2738    checkpoint54d_post
2739    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
2740    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
2741      leading to additional shift by 5 days each year of integration
2742       (i.e. leading to considerable offset over the years)
2743    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
2744    o start with no AB and no initial filtering (staggerTimeStep):
2745      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
2746    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
2747      (external loading & cpl import/export stay in forward_step.F)
2748    o update coupling interface to work with new staggerTimeStep
2749    o change MDSIO ptracers_pickup.
2750    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2751    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2752    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2753    
2754    checkpoint54c_post
2755    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2756      this affects (truncation error) output.txt of test-exp:
2757       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2758    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2759    o change Qnet to always be the net heat flux, (+upward).
2760      affects (truncation error) output of natl_box exp.: updated
2761    o define the max number of passive tracers in PTRACERS_SIZE.h
2762    o start to test mnc routinely in exp0
2763    o add sea-ice loading (sIceLoad) as a new forcing field.
2764    
2765    checkpoint54b_post
2766    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2767       impressive on Altix and Opteron systems)
2768    o diagnostics can now write NetCDF files through the mnc package
2769    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2770    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2771    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2772      affects (truncation error) output of lab_sea & natl_box exp.: updated
2773    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2774    
2775    checkpoint54a_post
2776    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2777    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2778    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2779    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2780      + internal_wave (shift in writing cg2d_ini_res)
2781    checkpoint54a_pre
2782    
2783    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2784      - modified verification/lab_sea and natl_box_adjoint accordingly
2785    
2786    checkpoint54
2787    checkpoint53g_post
2788    o prepare splitting of thermodynamics: store convect.counter in common block
2789    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2790      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2791    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2792    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2793    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2794    o restore adjointability
2795    
2796    checkpoint53f_post
2797    o modifications that affect AIM experiment results (update output.txt):
2798      - no advection of S at top interface Nr (pkg/generic_advdiff)
2799      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2800    o AIM pkg:
2801      - include stability function into surf.Flux derivative relative to Tsurf
2802      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2803    
2804    checkpoint53e_post
2805    o merged cylindrical coord configuration
2806    o added rotating_tank experiment
2807    checkpoint53e_pre
2808    
2809    checkpoint53d_post
2810    o faulks upgraded: re-generate output.txt that have changed:
2811       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2812    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2813    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2814    o added Sadourny discretization of Coriolis
2815      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2816      - re-enabled use of omega3 (useAbsVorticity)
2817    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2818      vector-invariant equations
2819      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2820    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2821      hopefully without new bugs
2822      - still to do: biharmonic friction for non-hydrostatic w
2823    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2824    o regenerated output for global_ocean_ebm (using -ieee)
2825    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2826      of mom_common/
2827      - simple re-arrangement of instructions within computing loop
2828    checkpoint53d_pre
2829    
2830    checkpoint53c_post
2831    o new version of coupler for AIM+thSIce and Ocean models
2832     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2833     - land: change Evaporation of snow
2834     - aim with thSIce: fix bug in snow-precip.
2835    o changes to calc_gw.F
2836     - bug fix for w^2 term near the bottom boundary
2837     - (hopefully) improve the lateral slip boundary condtions for use with
2838        partial/looped cells
2839      - because the bug fix changes two verification experiments anyway (exp5
2840        and plume on slope), change the lateral boundary condition from half slip
2841        to the value of no_slip_sides
2842    o ebm package wasnt quite up to the parallel task. Fixed that.
2843    o Adjoint of EBM package + verification
2844      * TLM OK
2845      * ADM not sufficient accuracy yet (needs further testing)
2846    
2847    checkpoint53b_post
2848    o Commiting new energy balance model to repository
2849      * package is pkg/ebm
2850      * verif. is verification/global_ocean_ebm
2851      * references are in ebm_driver.F
2852    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2853    C        Global thermohaline circulation. Part I:
2854    C        Sensitivity to atmospheric moisture transport.
2855    C        J. Climate 12(1), 71-82
2856    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2857    C        Global thermohaline circulation. Part II:
2858    C        Sensitivity with interactive transport.
2859    C        J. Climate 12(1), 83-91
2860    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2861    C        Destabilization of the thermohaline circulation
2862    C        by atmospheric eddy transports.
2863    C        J. Climate 7(12), 1870-1882
2864    o Will need long integration testing.
2865    checkpoint53b_pre
2866    
2867    o created pkg/mom_common in preparation for variable viscosity code
2868    o renamed and split ini_mnc_io
2869    o pkg/land: only liquid water can diffuse or run-off
2870    o AIM using land: soil wetness availability account for snow
2871    o added printMapIncludesZeros to EEPARMS namelist
2872    
2873    checkpoint53a_post
2874    o restore TAMC compatiility for exf_constants.h
2875      (no usage of _d in .h)
2876    o Additional storing in KPP in an attempt to fix
2877      TAMC problem with adjoint of KPP code.
2878      (no success...)
2879      Identical code works fine with TAF.
2880    o Fixed verification/natl_box_adjoint experiments.
2881      Initial conditions for Experiments 4 and 5 are now
2882      set to "SEAICE_initialHEFF=0", which is more reasonable,
2883      and hence gives results closer to that of Experiment 2.
2884      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2885    
2886    checkpoint53
2887    o stable checkpoint with up to date adjoint
2888      TLM tests only run for 1st grdchk at the moment. Its unclear if
2889      this is a code problem or a problem with resetting code for g_
2890      variables that is being autogenerated wrong.
2891      Otherwise:
2892       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2893       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2894         are both still in chaos following their security messes.
2895    
2896    checkpoint52n_post
2897    o various build (mostly genmake2) changes including:
2898      - ability to build/run more easily within Cygwin and MacOS X
2899      - more complicated Makefiles with a stronger dependence on Gnu Make
2900    o pkg/seaice modifications
2901      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2902        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2903        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2904      - changed proxy for geostrophic velocity and updated
2905        verification/lab_sea/results/* accordingly
2906      - removed ADI dynamic solver from pkg/seaice
2907      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2908        they caused a segmentation fault under certain circumstances
2909      - removed unused field WATR
2910    o bug fix in exf-package:
2911      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2912         now reflect that.
2913    o small fixes in the cal-package:
2914      - set reference date to first of January for the 'model'-calendar
2915      - failing of cal_CheckDate in cal_FullDate now actually results in a
2916        warning
2917    o small modifications in exf-package to increase flexibility:
2918      - change climtempfreeze from a constant to a runtime parameter that
2919        is specified in data.exf_clim (default = -1.9)
2920      - introduce runtime parameter windstressmax (default = 2.0) that is
2921        specified in data.exf
2922    o fix in pkg/thsice:
2923      - update Evap (Tsf changes) to be consistent with Latent heat flux
2924      - maintain snow precipitation unchanged (even if Tsf >=0).
2925     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2926    
2927    checkpoint52m_post
2928    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2929      this does not change any of the results, because myIter=0 in swfrac always
2930      lead to jwtype=2 (the default anyway), but the call makes little sense
2931      as a default
2932    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2933    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2934      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2935    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2936    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2937    o extending useSingleCpuIO option to work with new exch2 I/O format
2938      - old-style, missing-tile I/O is still accessible by defining CPP
2939        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2940    o monitor package can write to NetCDF files and/or STDOUT
2941    o fix re-definition bug in MNC_GRID_INIT_ALL()
2942    o doc/api_reference added
2943      - a framework for building an API Reference Manual using all
2944        the "protex" comments embedded in the code
2945      - see pkg/generic_advdiff, pkg/mnc for examples
2946    o MNC:
2947      - make myThid the last argument for all subroutines
2948      - new default for the grid files: NO halos
2949      - add useMNC and other run-time flags
2950      - separate per-file-group handling of the unlimited dimension
2951      - early initialization of MNC w/ flags read at the eeboot stage
2952        and lookup tables set in initialize_fixed
2953      - write all MNC output to a freshly-created directory
2954    o thermodynamics sea-ice (thsice) is now tested with testreport.
2955    o test exp. advect_cs: use the standard cs32 grid ; update output.
2956    o Added functionality to grdchk:
2957      pick global i,j,k position (or nearest wet) where to perform check.
2958    
2959    checkpoint52l_post
2960    o new land formulation:
2961      a) use ground enthalpy as prognostic variable to ensure exact
2962         energy conservation.
2963      b) account for water temperature and for latent heat of freezing
2964         in all processes (rain, run-off, ground storage)
2965      c) compute surface and ground temperature implicitly.
2966    o aim_v23 modification for new land model:
2967      a) Treat separately land / ocean / sea-ice surface fluxes
2968         to allow implicit computation of land & sea-ice surface temp.
2969      b) add snow precipitation.
2970    checkpoint52l_pre
2971    
2972    o fix problem (when 1 tile is empty) in min/max monitor.
2973    o fix bug in timeAve (u,vZetatave in common block)
2974    o no restoring terms under ice for pkg/seaice
2975    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2976    o bug fix for pkg/seaice pickups
2977    o change MNC call locations and add coordinate attributes
2978    o mask vorticity at the corner ; affects global_ocean.cs output
2979    o fix ini_curvilinear_grid ; test CS experiments with mpi
2980    o aim.5l_cs: modify sea-ice fraction input file ; update output
2981    o exf: Adding simple range check routine for exf fields after read
2982    
2983    checkpoint52k_post
2984    o removed top-level directory "diags"
2985      - we migrated these functions to pkg/timeave a long time ago
2986    o fixed bug introduced in pkg/monitor
2987    o accuracy ctrlprec = 32 insuffient for gradient checks using
2988      averaged fields (I/O via cost_averages)
2989      -> use ctrl.h in active_file*.F to control I/O precision.
2990    o paramter list of CALL ADTHE_MAIN_LOOP
2991    o added initial do_the_model_io to ecco
2992    o set all ...Freq to zero after cost_final
2993      taveFreq, dumpFreq, pChkptFreq
2994    o MAIN and ECCO differentiability restored
2995    
2996    checkpoint52j_post
2997    o fix nchklev in tamc.h for global_ocean...
2998    o Bringing flow and store directives up-to-date
2999    o Really weird thing!
3000      call do_the_model_io from the_main_loop with parameters
3001      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
3002      TAF places a faulty re-call of initialise_varia
3003      after cost_final call which should not be there!
3004    checkpoint52j_pre
3005    
3006    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
3007      error messages
3008    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
3009    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
3010      debug output
3011    o modfied mdsio_writefield.F to handle non-global files under exch2
3012    o update AIM Cubed-Sphere exp (aim.5l_cs):
3013      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
3014    o update AIM Equatorial Channel exp:
3015      use standard aim_v23 pkg and change the SST fields to be more realistic.
3016    o globalFile now works with exch2
3017    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
3018      mon_vort3.F to make exch2 friendly with >1 tile per cube face
3019    o limit timeave output for hi-res integrations
3020    
3021    checkpoint52i_post
3022    o removed CPP_EEOPTIONS.h from verification/*/code
3023    o updated the tiling for global_ocean_pressure
3024    checkpoint52i_pre
3025    
3026    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
3027      the old pkg/aim).
3028    
3029    checkpoint52h_pre
3030    o shortened offending lines in exch2_send_rx?.template
3031    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
3032    o genmake2: add build & execute test for NetCDF code
3033    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
3034      old grid files, moved CPP_EEMACROS.h to pkg/exch2
3035    o added useSingleCPUIO flag to monitor.F and mon_out.F
3036    o added temporary hack for sea-ice dynamics on the cube:
3037      metric terms are ignored and it is assumed that
3038      there is no sea-ice on cube faces 1, 2, 4, and 5.
3039    
3040    checkpoint52f_post
3041    o added exch2 cube routines to pkg/exch2
3042    o modified hs94.cs-32x32x5 to use it
3043    o added new grid files to hs94.cs-32x32x5
3044    checkpoint52f_pre
3045    
3046    checkpoint52e_post
3047    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
3048      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
3049    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
3050      to work with implicit vertical advection and AB ;
3051    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
3052    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
3053     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
3054    checkpoint52e_pre
3055    
3056    o fix bug in impldiff when Nr=1 or Nr=2.
3057    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
3058    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
3059    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
3060      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
3061    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
3062    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
3063    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
3064    
3065    checkpoint52d_post
3066    o re-tiled many expts to allow comparison in multi-processor mode
3067      - updated output accordingly
3068      - changed hs94.128x64x5 to use intial T from file rather than use the
3069        random number generator
3070    o add infrastructure in model routines for fizhi and gridalt packages
3071    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
3072    o changes to permit hi-res, cubed-sphere, configuration
3073      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
3074      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
3075      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
3076        of surface winds for the cube
3077      (A verification experiment, based on global_ocean.cs32x15, but with
3078       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
3079       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
3080       complete with example surface forcing files and matlab scripts to look
3081       at the output and compare it with that of global_ocean.cs32x15.)
3082    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
3083       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
3084       to conform to the common rule.
3085    o check-in the first version of the coupler + interfaces for multi-components
3086       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
3087       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
3088       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
3089       - ocean and atmos. share the same horizontal grid (no interpolation).
3090       - exchanges between component and coupler is done in forward_step
3091    o new verification experiment, cpl_aim+ocn:
3092       coupled ocean - AIM atmosphere on cs32 grid.
3093    
3094    checkpoint52d_pre
3095    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
3096    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
3097    
3098    checkpoint52c_post
3099    o Fixing OPTIONS files for use of exf:
3100      - ALLOW_ECCO not needed
3101      - ECCO_CPPOPTIONS.h should not be included from
3102        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
3103        as has been the case in the past
3104      - All cal/exf related options are currently set in
3105        single header file. Should remain so until we
3106        agree on a consistent new policy.
3107    o Removed all CPP options for cal package.
3108      cal has no more CPP options.
3109    o modified STOREs in GAD_ADVECTION
3110    o corrected key comp. for passkey
3111    
3112    checkpoint52b_post
3113    o new version: "thsice" of thermodynamic sea-ice pkg:
3114     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
3115     - modify fluxes but do not change theta directly;
3116     - light cleaning of bulk_force pkg (still needed with thsice).
3117     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
3118       + output_thsice.txt to test thsice & bulk_force pkgs.
3119    o put back grid & coriolis monitor output.
3120    checkpoint52b_pre
3121    
3122    o call "do_the_model_io" at the beginning (=> dump initial state)
3123    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
3124    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
3125      (need info on NUMBER_OF_PTRACERS)
3126    o missing PTRACERS headers in some routines
3127    o default tamc.h in pkg/autodiff supposed to crash
3128      to ensure proper customization
3129    
3130    checkpoint52a_post
3131    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
3132      - moved surfaceTendencyTice from pkg/seaice to main code
3133      - subroutine FREEZE_SURFACE now limits only surface temperature
3134        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
3135        => new output.txt for global_ocean.cs32x15 & global_with_exf
3136      - keep the old version of FREEZE for backward compatibility;
3137        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
3138      - corresponding modifs for TAF directives
3139    o added surface flux output variables to TIMEAVE_STATVARS
3140    o time-averaged output for pkg/ptracers
3141    o fix problem with ECCO-related divided adjoint
3142      snapshot file was missing some ad-variables,
3143      but no warning issued by TAF
3144    
3145    checkpoint52a_pre
3146    o some bug fixes for #undef REAL4_IS_SLOW
3147    
3148    checkpoint52 = ecco_c52_e35
3149    o after testing adjoints of checkpoint51u_post
3150    
3151    checkpoint51u_post
3152    o this is the post-merge tag of the ecco-branch
3153      (needs another clean checkout and re-testing)
3154    o various natl_box_adjoint configs and results
3155      but no input fields
3156    o obcs adjoint not yet merged!
3157    o adding ECCO global 1x1 and 2x2 degree configs
3158    o updated/extended some store directives for seaice
3159    o pkg/ecco now containes ecco-specific part of cost function
3160    o top level routines the_main_loop, forward_step
3161      supersede those in model/src/
3162      previous input data.cost now in data.ecco
3163      (new namelist ecco_cost_nml)
3164    o in ctrl/ cleaned some cross-dependencies and updated CPP options
3165    
3166    checkpoint51t_post
3167    o this is the pre-merge tag of the ecco-branch
3168    
3169    checkpoint51s_post
3170    o cleanup: removed various obsolete #define-s
3171    o pkg/grdchk
3172      - renamed 'ph-grd 3' to 'grad-res'
3173      - merged from ecco-branch
3174        (remaining bug fixes for obcs gradient checks)
3175      - additional high-precision output for testreport
3176        (grep for 'precision_grdchk_result')
3177    
3178    checkpoint51r_post
3179    o cleaned up or removed CPP_OPTIONS.h files
3180    o updated results for some of the tests to reflect the new
3181      optfiles (-ieee: -O0 instead of -O3)
3182    
3183    checkpoint51q_post
3184    o cd_code:
3185      - moved cd_scheme.F -> cd_code_scheme.F
3186      - separate read_checkpoint from cd_code_ini_vars.F
3187      - separated cd_code part from write_checkpoint
3188      - updated AD_SOURCE, generated .flow
3189      - added CD_CODE_VARS.h to the_main_loop
3190      - Moving cd_code specific store dir.s to pkg/cd_code
3191    o ctrl package totally restructured
3192      - pack/unpack now optional and decoupled from
3193        xx_/adxx_ I/O
3194      - ctrl_pack/unpack cleaned
3195        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
3196      - confined inclusion of AD_CONFIG.h to where necessary.
3197    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
3198    
3199    checkpoint51p_post
3200    o create initial cd_code package
3201      - WARNING: the initialization of fields within packages
3202        is broken because INI_FIELDS (where READ_CHECKPOINT is
3203        called) is called *before* PACKAGES_INIT_VARIABLES.
3204        This seems to be backwards since
3205        1) its important to initially zero the entire field including
3206           the "halo" region
3207        2) zeroing needs to be done *before* reading pickup info
3208           and the pickup call might or might not happen in any
3209           particular run
3210      - this needs an overhaul for R2
3211    o cleanup verification/*/code/GMREDI_OPTIONS.h
3212    o cleanup testreport
3213    
3214    checkpoint51o_post
3215    o bringing AD-related verif's up to date with genmake2
3216      - carbon/
3217      - global_ocean.90x40x15/
3218      - hs.94.1x64x5/
3219      - (front_relax/ )
3220    o (more) consistent directory structure for AD-related verif.'s
3221    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
3222    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
3223    o bug fix in find_alpha.F for MDJWF:
3224      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
3225        change rho -> rho-rhoConst
3226      - replace call find_rho to find_rhonum
3227    o initialisation of rFlx extended to full array (required by TAF)
3228      and shifted to thermodynamics
3229    o removed PTRACERS.h in ptracers routine
3230    o added surfacetendencyPtr to S/R parameter list pracers_forcing
3231    o Correcting initialisations for fVerU, fVerV.
3232    o helping TAF to recognize dependency on kUp for
3233      fVerU, fVerV
3234    o Replacing delZ by delR in pkg/ctrl/
3235    checkpoint51o_pre
3236    
3237    o undid all of cp51 pending some cleanups and discussion
3238    o added the [#include "AD_CONFIG.h"] statement to all files that need
3239       it for adjoint/tl #defines
3240     o re-worked the build logic in genmake2 to support AD_CONFIG.h
3241     o removed tools/genmake since it no longer works
3242    
3243    checkpoint51n_post
3244    o modifications to make FREEZE flux visible to pkg/kpp
3245      - moved surfaceTendencyTice from pkg/seaice to main code
3246      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
3247      - subroutine FREEZE now limits only surface temperature
3248        (this means new output.txt for global_ocean.90x40x15,
3249         global_ocean.cs32x15, and global_with_exf)
3250    o added surface flux output variables to TIMEAVE_STATVARS
3251    
3252    checkpoint51n_pre
3253    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
3254    o added [#include "AD_CONFIG.h"] to all files that use the following
3255      defines:
3256      - ALLOW_ADJOINT_RUN
3257      - ALLOW_TANGENTLINEAR_RUN
3258      - ALLOW_ECCO_OPTIMIZATION
3259    
3260    checkpoint51m_post
3261    o incorporating changes to get TAMC/TAF working in genmake2
3262      - added new TAMC/TAF targets to the Makefile
3263      - various cleanups related to package handling
3264      - these changes should have no impact on the forward model
3265    
3266    checkpoint51l_post
3267    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
3268     - faster algorithm for cal_addtime.F
3269     - higher precision arithmetic, where needed
3270     - pkg/exf *startdate variables changed from calendar date to
3271       model integration time
3272    
3273    checkpoint51l_pre
3274    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
3275    o enable to apply restoring on S & T only in a latitude band.
3276    o update output (external_forcing_surf modif. change truncation errors)
3277       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
3278    
3279    checkpoint51k_post
3280    o change default to: useNHMTerms=.FALSE.
3281     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
3282       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
3283     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
3284        exp1, ideal_2D_oce
3285     - change data file of oceanic exp (leave the results unchanged for now)
3286       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
3287    o set gravitySign automatically according to the vertical coordinate used
3288      (and change sign: back to "logical" value: +1 when R increases downward)
3289    o added an include barrier to the default CPP_OPTIONS.h and
3290      removed the #include "PACKAGES_CONFIG.h" from it
3291    o fix a bug in mom_fluxform (from chk51j_post)
3292    
3293    checkpoint51j_post
3294    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
3295    o adjusted some flow directives (dynamics, thermodynamics)
3296    o added cubed-sphere case to test cost function
3297    o heckpoint_lev?_directives.h now include
3298      pkg-specific directives, whenever those are enabled.
3299    o Moving pkg-specific flow directives to corresponding pkg
3300      Moving pkg-specific differentiation list to corresponding pkg
3301      Moving pkg-specific checkpoint-lev storing to corresponding pkg
3302      ---> conventions are
3303           - pkg_ad.flow
3304           - pkg_ad_diff.list
3305           - pkg_ad_check_lev?_dir.h
3306    
3307    checkpoint51i_post
3308    o merge of the branch-genmake2
3309      - knowingly breaks the older genmake
3310      - automatic generation of all ALLOW_${PKG_NAME} defines
3311      - new testreport supersedes older testscript
3312    o large number of package inclusion and header cleanups
3313    checkpoint51i_pre
3314    
3315    o new output for adjoin of global ocean vector invariant
3316    o fix for checkpoint of thermodynamic seaice and bulk_force
3317    o Steph gchem various cleanups
3318    
3319    checkpoint 51h_pre
3320    o fixed some single quotes
3321    o modify gchem pkg to be more versatile
3322    o modifications to clean up dic pkg
3323    o add pkg/cfc
3324    
3325    checkpoint51g_post
3326    o provide links for ARPACK and ADM*TLM
3327    o start removing verification/vero/
3328    o update AD-related stuff
3329      (in particular some IF-statements in model/src/ routines)
3330    o adding to verification/global_ocean.90x40x15/ adjoint of
3331      vector invariant setup
3332    
3333    checkpoint51f_post
3334    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
3335    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
3336      of tracer Green's fucntions for ocean inversion project.
3337    
3338    checkpoint51f_pre
3339    o Added on-the-fly spatial interpolation capability
3340        "USE_EXF_INTERPOLATION" to pkg/exf.
3341      - This is a temporary Cartesian-grid hack until
3342        the super-duper ESMF coupler becomes available.
3343      - See verification/global_with_exf/README for usage example.
3344      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
3345        flags and modified pkg/seaice accordingly.
3346    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
3347        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
3348        non-local transport term.
3349    
3350    checkpoint51e_post
3351    o pkg/mom_vecinv:
3352      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
3353      - add time-ave diagnostic of vorticity advection.
3354    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
3355    o atmospheric geopotential: - include water vapor effect;
3356                                - use p^kappa in p* scaling.
3357    o land pkg: read initial state from files.
3358    o AIM : add stratospheric drag in the upper level
3359    
3360    checkpoint51d_post
3361    o change function ILNBLNK (=> last non-blank char.) to return zero
3362      (instead of the string length) when the string. char is empty
3363    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
3364    o modif's to restore TAMC compatibility
3365      - avoid "_d" constructs in PARAMETER declarations
3366      - avoid interrupting lines by comment lines
3367    o Use cluster local disks for purely local I/O
3368      vs. globally visible disks needed for ctrl stuff
3369      (merged from ecco-branch)
3370      - new active_file_loc... and mdsio_..._loc routines
3371      - affected packages: autodiff, ctrl, grdchk, mdsio
3372    
3373    checkpoint51c_post
3374    o introducing integer flag debugLevel
3375      - debLevZero: suppress all output
3376      - debLevA: standard
3377      - debLevB: equivalent to current debugMode=.TRUE.
3378    o introducing pathname variable mdsioLocalDir for mdsio
3379      that can be specified at runtime
3380      (relevant for cluster I/O to local disk)
3381    `
3382    >>>checkpoint51b_post
3383    adjoint of ptracers
3384    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
3385    o extended state in checkpoint_lev?, etc.
3386    o alternative ctrl/cost with tr1 or ptracer
3387    o new comlev1_bibj_ptracers
3388    o new ptracers.flow
3389    o made ptracers_forcing same as external_forcing_s
3390    o added verification for adjoint with ptracers
3391      - adm. grdchk fail so far
3392      - tlm. grdchk OK
3393      - checked tapelev/comlev recomputations: OK
3394    <<<checkpoint51b_pre
3395    
3396    checkpoint51a_post
3397    o added code for biogeochemistry package
3398      - new pkgs: dic, gchem
3399      - new subroutine in ptracers
3400    o modify code for biogeo packages
3401      - in model/src and pkg/ptracers
3402    
3403    checkpoint51
3404    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
3405      - autodiff, ctrl, exf, grdchk, seaice
3406      kept separate packages
3407      - cost, ecco, obcs
3408    o updating verification/internal_wave, verification/lab_sea
3409      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
3410    
3411    checkpoint50i_post
3412    o Preparing next differentiable checkpoint and sync
3413      of MAIN vs. ecco-branch
3414      - 1st step: this one is differentiable
3415      - 2nd step: next(! not this) checkpoint will have updated packages
3416                  from ecco-branch)
3417    
3418    checkpoint50h_post
3419    o new package "land": provide surface BC for AIM.
3420    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
3421    o AIM: use true log-P extrapolation for near surface temp (= as in
3422        F.Molteni paper) ; update aim.5l_cs output.
3423    o New variable in PARM03 for more flexible pickups
3424    o somewhat cleaned package initialisation sequence for
3425      ctrl/ cost/ ecco/ in packages_... routines
3426    
3427    checkpoint50g_post
3428    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
3429      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
3430      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
3431        made the default because of faster convergence than ADI
3432    
3433    checkpoint50f_post
3434    o exf totally restructured
3435      - replaced all exf_set_ routines by one generic exf_set_gen.F
3436        and made sure it's still differentiable
3437      - split exf_getffields.F into new exf_bulkformulae.F
3438      - exf_inscal_/exf_outscal_ suffixes consistent with field names
3439      - updated adjoint/makefile and relevant verif. accordingly
3440    
3441    checkpoint50f_pre
3442     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
3443          + change Evap over land. (update aim.5l_cs output)
3444     o added missing .cvsignores and made uniform across expts
3445     o changed configuration of tidal_basin_2d expt
3446     o added pkg/debug functions for tracing code in fatal crashes
3447     o tidied pkg/monitor to use MONITOR_OPTIONS.h
3448     o new fn in pkg/monitor to stop model if solution grows too big
3449     o removed lots of single quotes from comments
3450    
3451    checkpoint50e_post
3452    o make KPP work with PTRACERS
3453     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
3454       nearly a copy of kpp_transport_s
3455     - there is no analogue to SurfaceTendencyS, so I have to use
3456       gPtr(of the surface layer) instead
3457    o add a new platform SunFire+mpi (SunFire 15000) to genmake
3458    checkpoint50e_pre
3459    
3460    checkpoint50d_post
3461    o change kpp output from multiple-record state files to single-record state
3462      files analogous to write_state.F
3463    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
3464      analogous to the cg2d-related output.
3465    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
3466      so that writing to internal file fn (with length 512) fails.
3467    checkpoint50d_pre
3468    
3469    checkpoint50c_post
3470    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
3471    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
3472    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
3473    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
3474    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
3475    
3476    checkpoint50c_pre
3477    Merging from release1_p13:
3478    o bug fix for pkg/seaice dynamic solver
3479    o Added SEAICE_initialHEFF to pkg/seaice
3480    
3481    checkpoint50b_post
3482    o store u*,v* in gU,V instead of in guNm1,gvNm1
3483    o in order to put the momForcing out of the Adams-Bashforth:
3484      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
3485      to timestep.F
3486    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
3487    o re-generate output for highly sensitive test-exp:
3488       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
3489    
3490    checkpoint50b_pre
3491    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
3492    o corrected CPP option mismatch in exf_Bulk... functions for case
3493      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
3494    
3495    checkpoint50a_post
3496    o Bug fix for merging between c50 and KPP.
3497      ikey was passed from thermodynamics to kpp_calc via
3498      common block rather than being recomputed in kpp_calc,
3499      in contradiction with new key itdkey.
3500      New key ikppkey created, and tamc.h headers updated.
3501    
3502    checkpoint50
3503    - 2nd step of merge with ecco-branch:
3504      merge changes in ecco-branch back into main trunk
3505    - bug fix in find_alpha
3506    - more storing in gmredi_calc_tensor.F, kpp_routines.F
3507    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
3508    - merged some sliced AD support routines
3509    
3510    checkpoint49
3511    merged from ecco-branch:
3512    o exf:
3513      - Enable initialisation of forcing fields to constant
3514        (runtime) values.
3515      - in exf_getffields.F
3516        Reduce i-/j-loop to interior domain, discarding overlaps.
3517        That also fixes wrong TAF-key computations for key_1, key_2
3518        with bulf formulae.
3519      - exf_init.F modify #ifdef for exf_init_evap
3520      - exf_getffieldrec.F, ctrl_getrec.F
3521        The following INT-usages are not safe:
3522          fldsecs  = int(fldsecs/fldperiod)*fldperiod
3523          fldcount = int(fldsecs/fldperiod) + 1
3524        and were modified.
3525    o autodiff: checkpoint_lev...
3526      - updated storing for bulk formulae (some arrays were missing)
3527      - added state for seaice package
3528      - synchronized with main branch
3529    o DIVA:
3530      Modif.s in
3531      - the_main_loop.F
3532      - the_model_main.F
3533      and added cost_final_restore.F cost_final_store.F
3534      o With these changes, it is possible to fully separate
3535        the first forward run to compute the cost function (mdthe_main_loop)
3536        and adjoint runs over individual DIVA intervals (adthe_main_loop)
3537        into separate model executions.
3538        This enables better tuning of DIVA to given queue sizes.
3539      o Loss of cost function value in consecutive DIVA runs is
3540        fixed by storing to 'costfinal' file.
3541      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
3542        beginning/end of adjoint integration is accounted for.
3543      The current changes apply to TAF-1.4.26.
3544      TAF has one remaining bug, requiring one manual change
3545      (see MITgcm manual).
3546    o cal: synchronized between MAIN and ecco-branch
3547    
3548    checkpoint48i_post
3549    o Changes to restore differentiability of code w.r.t. previous tag
3550      (mostly adding new routines to make list and replacing
3551      pressure by totPhiHyd).
3552    o Updated and merged grdchk package
3553      - has both ADM and TLM checks
3554      - works for single- and multi-proc.
3555      - output cleaned
3556      - worked successfully for parallel DIVA
3557    o genmake:
3558      - Adding -platform=SP4
3559      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
3560    o Modif. for DIVA:
3561      ctrl_unpack should not be called in intermediate DIVA interval.
3562      (similar thing would apply for active files such as
3563      tbar, sbar, psbar, which should not be reinitialised;
3564      only relevant for ecco-branch)
3565    
3566    checkpoint48h_post
3567    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
3568    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
3569    o Added SEAICE_initialHEFF to pkg/seaice
3570    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
3571    
3572    checkpoint48g_post
3573    --- EOS:
3574    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
3575      store total Potential in totPhyHyd for diagnostics & EOS.
3576    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
3577    --- Pressure/geopotential gradient:
3578    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
3579    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
3580      ( changes results of global_ocean_pressure )
3581    o NLFS + z-coord.: add eta*Rho' contribution.
3582    o accurate phiHyd when using interface-W at the middle between 2 centers
3583     ( changes results of ideal_2D_oce )
3584    o includes r* 2nd term in potential gradient.
3585    
3586    checkpoint48f_post
3587    Merging from release1_p12:
3588    o Modifications for using pkg/exf with pkg/seaice
3589      - improved description of the various forcing configurations
3590      - added basic radiation bulk formulae to pkg/exf
3591      - units/sign fix for evap computation in exf_getffields.F
3592      - updated verification/global_with_exf/results/output.txt
3593    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
3594      (SBO) core products, including oceanic mass, center-of-mass,
3595      angular, and bottom pressure (see pkg/sbo/README.sbo).
3596    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
3597      to avoid negative values in shallow regions.
3598      - updated verification/natl_box/results/output.txt
3599      - updated verification/lab_sea/results/output.txt
3600    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
3601    o Added useSingleCpuIO option (see PARAMS.h).
3602    o Updated useSingleCpuIO option in mdsio_writefield.F to
3603      work with multi-field files, e.g., for single-file pickup.
3604    o pkg/seaice:
3605      - bug fix in growth.F: QNET for no shortwave case
3606      - added HeffFile for specifying initial sea-ice thickness
3607      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
3608    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
3609      kpp_transport_t.F, forward_step.F, and the_main_loop.F
3610    o pkg/seaice:
3611      - adjoint-friendly modifications
3612      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
3613    
3614    checkpoint48e_post
3615    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
3616    o dynamics: change definition of computational domain & adapt mom_fluxform
3617      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
3618    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
3619        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
3620        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
3621        global_ocean.90x40x15 global_with_exf global_ocean_pressure
3622        inverted_barometer solid-body.cs-32x32x1
3623      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
3624    
3625    checkpoint48d_post
3626    o in preparation for r*:
3627     a) use pre-computed gradient of hydrostatic potential:
3628        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
3629     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
3630        => affects results of glob_oce_pressure (different truncation error)  
3631      update output.txt of ideal_2D_oce & global_ocean_pressure
3632    
3633    checkpoint48d_pre
3634    o in preparation for r*:
3635      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
3636      pass the 2 comp. of the grad. as arguments to momentum S/R.
3637      but for the moment, only used if it does not change the results.
3638    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
3639    
3640    checkpoint48c_post
3641    Modifications in treatment of initial flux forcing controls
3642    to avoid extra storing of flux fields.
3643    
3644    checkpoint48c_pre
3645    o Added tidal_basin_2d experiment (currently 1D!)
3646    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
3647    
3648    checkpoint48b_post
3649    o r* coordinate added in #ifdef NONLIN_FRSURF block.
3650     (modification to pressure gradient not yet implemented)
3651    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
3652      (for U & V) that are used for vertical advection of momentum.
3653    
3654    checkpoint48a_post
3655    o In preparation for r*, use temp. array to compute vertical transport
3656       in flux-form momentum pkg. => change results of few test-exp.
3657      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
3658                        lab_sea, natl_box & plume_on_slope
3659    
3660    checkpoint48
3661    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
3662    
3663    checkpoint47j_post
3664    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
3665    o moved adexch from forward_step to addummy_in_stepping
3666    o added exch in ctrl_map_...
3667    o aveFreq.=0. at end of cost_final to avoid overwrite in
3668      reverse checkpointing loop
3669    o Yet more changes in gmredi:
3670      * adgmredi_calc_tensor
3671        avoiding all recomputation of gmredi_slope_limit
3672      * adgmredi_x/y/rtransport
3673        added flag for excessive storing to avoid recomp. of
3674        u/v/rtans, dTdx/y/z
3675        -> this is not really necessary and very memory-consuming
3676      * adgmredi_slope_psi:
3677        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
3678      * gmredi_slope_limit
3679        re-activated full calculation of taperfct for case 'ac02'
3680    o updating verification/ adjoints of carbon, global_ocean.90x40x15
3681    
3682    checkpoint47i_post
3683    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
3684    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
3685      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
3686    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
3687    o gmredi: fix few bugs.
3688    
3689    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
3690    This will be a good checkpoint to plug into the ecco-branch.
3691    o few modif.'s to get latest version adjointed
3692      (mainly kick out code in ini_linear_phisurf)
3693    o modif's to run adjoint with exactConserv
3694    o case GM_BOLUS_ADVEC should be cleaned
3695      S/R gmredi_slope_psi should be cleaned
3696    o verification/carbon now has exactConserv=.TRUE.
3697    
3698    checkpoint47g_post
3699    o time-average AIM output: becomes independent from statvars time-average
3700      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
3701    o After TAF bug fix:
3702      Tested adjoint of gmredi package.
3703      Tests were done with checkpoint47 rather than with latest
3704      checkpoint47f_post since the latter is broken for the adjoint
3705      verification/carbon/ contains both ADM and TLM gradient checks.
3706    Here they are, before they get changed/lost/stolen.
3707    Mostly modif.'s to fix numerical sensitivities.
3708    Gradient checks OK for
3709    - GM_taper_scheme:
3710      * clipping
3711      * ac02
3712      * linear
3713      * glw91
3714      * dm95
3715      * ldd97
3716    - GMREDI_OPTIONS:
3717      * GM_VISBECK_VARIABLE_K
3718      * GM_NON_UNITY_DIAGONAL
3719      * GM_EXTRA_DIAGONAL
3720      * GM_BOLUS_ADVEC
3721    in conjunction with data.gmredi parameters to be checked in
3722    in a few minutes under verification/carbon/code/
3723    
3724    checkpoint47f_post
3725    Merging from release1_p10:
3726    o modifications for using pkg/exf with pkg/seaice
3727      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
3728        and SEAICE_EXTERNAL_FLUXES
3729      - pkg/exf CPP options EXF_READ_EVAP and
3730        EXF_NO_BULK_COMPUTATIONS
3731      - usage examples are Experiments 8 and 9 in
3732        verification/lab_sea/README
3733      - verification/lab_sea default experiment now uses
3734        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
3735    
3736    checkpoint47e_post
3737    o created a tag prior to creating a branch
3738    
3739    checkpoint47d_post
3740    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
3741      at the bottom boundary had an erroneous half slip boundary condition
3742    o added bottom drag and no slip boundary condition capabilities to
3743      oceanic pressure coordinates code
3744    o added new verification experiment global_ocean_pressure, this experiment is
3745      also described in the tutorial section of the manual
3746    checkpoint47d_pre
3747    
3748    checkpoint47c_post
3749    o Added a verification experiment for a global cubed-sphere ocean run
3750      -  verification/global_ocean.cubed32x32x30
3751      -  uses pkg/therm_seaice and pkg/bulk_forcing
3752    
3753    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
3754    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
3755      when using P-coordinate; only implemented for atmospheric config.
3756    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
3757      NOTES: requires option NONLIN_FRSURF to be "#define".
3758    o update advect_xz/results/output.txt (left from checkpoint44g_post)
3759    
3760    checkpoint47b_post
3761    Merging from release1_p9:
3762    o pkg/seaice
3763      - removed GOTO's and added taf directives
3764      - double precision constants to reduce the g77 (Linux)
3765        to F77 (SGI) differences reported in release1_p8
3766    o tools/genmake
3767      - added SGI options
3768    o verification/testscript
3769      - updated to that of checkpoint47a_post
3770    o verification/global_ocean.90x40x15/input/eedata
3771      - modified for SGI f77 compatibility
3772    o verification/lab_sea
3773      - added description of sea-ice model
3774      - added missing matlab routines
3775      - added test of thermodynamics parallelization
3776    
3777    checkpoint47a_post
3778    o new pkg: aim_v23
3779     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
3780       for now, keep the same surface forcing as before.
3781     - Part-Cell implemented into AIM; check that Heat & Water are conserved
3782     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
3783     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
3784    o add diagnostic of surface correction term in monitor output
3785    
3786    o bulk_force and therm_seaice
3787    - Two packages:  bulk_force (Bulk forcing)
3788      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
3789    - Earlier integration from Stephaine Dutkiewicz
3790      and Patrick Heimbach.
3791    - Two ifdef statements for compile time,
3792       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
3793    
3794    checkpoint47
3795    differentiable version of checkpoint46n_post
3796    o bug fix in quasihydrostaticterms
3797    o * "clean" adjoint code (in terms of extensive recomputations)
3798        can now be obtained for all GMREDI options (i.e. for
3799        - GM_VISBECK_VARIABLE_K
3800        - GM_NON_UNITY_DIAGONAL
3801        - GM_EXTRA_DIAGONAL
3802        - GM_BOLUS_ADVEC )
3803      * However, wrong gradient check problem remains unsolved.
3804      * New CPP options have been introduced for different
3805        tapering schemes
3806    o external_fields_load now part of differentiation list
3807    o pressure needs multiple storing;
3808      would be nice to have store_pressure at beginning or
3809      end of forward_step, e.g. by having phiHyd global (5-dim.)
3810      (NB: pressure is needed for certain cases in find_rho,
3811      which is also invoked through convective_adjustment).
3812    o recomputations in find_rho for cases
3813     'JMD95'/'UNESCO' or 'MDJWF' are OK.
3814    o #define ATMOSPHERIC_LOADING should be differentiable
3815    o ini_forcing shifted to begining of initialise_varia
3816    o Incorporating QNVS line search routines into MITgcm
3817      (this is separate code, and therefore not under pkg)
3818      lsopt/, optim/
3819    o Updated verification/carbon/
3820      - #define GM_VISBECK_VARIABLE_K
3821      - GM_taper_scheme    = 'ldd97'    
3822    
3823    checkpoint46n_post
3824    Merging from release1_p8:
3825    o verification/natl_box:
3826      updating new external_fields_load routine
3827    o New package: pkg/seaice
3828      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
3829      The sea-ice code is based on Hibler (1979-1980).
3830      Two sea-ice dynamic solvers, ADI and LSR, are included.
3831      In addition to computing prognostic sea-ice variables and diagnosing
3832      the forcing/external data fields that drive the ocean model,
3833      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
3834      The implied surface heat flux is then stored in variable
3835      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
3836      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
3837      non-local transport term.  Because this call precedes model
3838      thermodynamics, temperature under sea-ice may not be "exactly" at
3839      the freezing point by the time theta is dumped or time-averaged.
3840      N.B.: fairly large differences in accuracy occur across
3841            different platforms/compilers; comparison between
3842            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
3843            generated output gives:
3844       T           S           U           V
3845      C D M    c        m  s        m  s        m  s        m  s
3846      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
3847      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
3848      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
3849    
3850      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
3851    o GAD:
3852      - generated new common blocks to account for call of
3853        same gad routines with differing traceridentities
3854        (needed to modify tracerIdentity indices in GAD.h)
3855      - generated separate common blocks for case useCubedSphereExchange
3856        (Department of Futurology)
3857      - parameter lists to gmredi_?transport: added tracerIdentity
3858      - added new key indices to tamc.h
3859    o external_fields_load:
3860      - added this routine to TAF list
3861      - needed to make some common blocks global and additional storing
3862        along the same lines as exf package (checkpoint_lev?_directives.h)
3863    o exf:
3864      updated external forcing package
3865      - bug fixes carried over from ecco-branch
3866        (missing OBCS_OPTIONS.h in two routines)
3867      - enable easy to use "no forcing".
3868      - added exf I/O for atmospheric loading
3869      - added exf I/O for runoff data
3870      - transfered scaling between exf <-> MITgcm to exf namelist
3871    o Adding new verification experiment global_with_exf.
3872      This verification experiment is almost identical to the
3873      global_ocean.90x40x15 experiment, except that it uses
3874      the exf (and cal) package instead of the
3875      external_fields_load routine (cf README file).
3876    
3877    checkpoint46m_post
3878    o modified testscript to return -- when there are no lines of "%MON" output
3879    o added new flag "quasiHydrostatic" for QH mode
3880      and new routine quasihydrostaticterms()
3881    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
3882      New routine: mom_u_coriolis_nh()
3883    o fixed sign of non-hydrostatic metric terms in u and v equations.
3884      Depend on correct sign of gravitySign.
3885    o added work.pc* to .cvsignore in aim directories using ifc
3886    o introduced flag for controllin non-hydrostatic metric terms
3887    o removed gravitySign from PARM04
3888    o switched to g77/ifc from pgf77 in aim experiments
3889    
3890    checkpoint46l_post
3891    o made convective adjustment work with pressure coordinates:
3892     - changed the direction of k-loop in convective_adjustment.F for the
3893       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
3894     - adjusted the reference pressure k-index in convective_adjustment.F
3895     - adjusted the convection condition in convect.F (in analogy to
3896       calc_ivdc.F)
3897     - convective_adjustment no longer computes anything on the halos
3898     - removed the warnings about negative salinity from find_rho.F and
3899       find_alpha.F; instead the new routine look_for_neg_salinity, called
3900       at the beginning of find_rho, find_alpha, and find_beta, does a
3901       check of the entire slice, if CPP-option
3902       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
3903    checkpoint46l_pre
3904    
3905    checkpoint46k_post
3906    o fixed the verification/global_ocean.90x40x15 experiment:
3907     - new bathymetry (the world according to A., JMC, and M.)
3908     - new initial fields and forcing fields (*.bin files)
3909     - new POLY3.COEFFS (for the next release one should switch to a full
3910       equation of state: JMD95P or MDJWF)
3911     - fixed several errors and redundancies in the data file
3912     - experiment uses looped cells
3913     - added matlab directory with diagnostic scripts for plotting of output
3914    
3915    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
3916     - read AIM physics parameters from a file (data.aimphys)
3917     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
3918    
3919    checkpoint46j_post
3920    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
3921    o move wVel computation at the end of the time step, in S/R integr_continuity
3922    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
3923    o update timeave pkg for wVel diagnostic.
3924    checkpoint46j_pre
3925    
3926    checkpoint46i_post
3927    o Clean up AIM package (and keep the results unchanged):
3928      include CPP_OPTION and use IMPLICT NONE in all routines ;
3929      declare all the variables _RL ; use _d 0 for all numerical constants.
3930      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
3931    
3932    checkpoint46h_post
3933    o cleaned up the use of rhoNil and rhoConst.
3934      - rhoNil should only appear in the LINEAR equation of state, everywhere
3935        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
3936        and the dynamical equations are all divided by rhoConst
3937    o introduced new parameter rhoConstFresh, a reference density of fresh
3938      water, to remove the fresh water flux's dependence on rhoNil. The default
3939      value is 999.8 kg/m^3
3940    o cleanup up external_forcing.F and external_forcing_surf.F
3941      - can now be used by both OCEANIC and OCEANICP
3942    checkpoint46h_pre
3943    
3944     Added code to convert surface volume flux (fresh water) into
3945     a mass flux when using P coordinates in the ocean (OCEANICP).
3946     Note: It assumes you have set rho0=rhoConst=density of fresh water.
3947    
3948    checkpoint46g_post
3949    o Include a new diagnostic variable phiHydLow for the ocean model
3950      - in z-coordinates, it is the bottom pressure anomaly
3951      - in p-coordinates, it is the sea surface elevation
3952      - in both cases, these variable have global drift, reflecting the mass
3953        drift in z-coordinates and the volume drift in p-coordinates
3954      - included time averaging for phiHydLow, be aware of the drift!
3955    o depth-dependent computation of Bo_surf for pressure coordinates
3956      in the ocean (buoyancyRelation='OCEANICP')
3957      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
3958        Theta, Salinity, and Pressure in the parameter list. This routine is
3959        presently contained in find_rho.F. This routine does not give the
3960        correct density for 'POLY3', which would be a z-dependent reference
3961        density.
3962    o cleaned up find_rho
3963      - removed obsolete 'eqn' from the parameter list.
3964    o added two new verification experiments: gop and goz
3965      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
3966    checkpoint46g_pre
3967    
3968    checkpoint46f_post
3969    o Enable tangent linear (forward mode) gradient checks:
3970      - extended active file handling to g_... files
3971      - added TANGENT_SIMULATION to theSimulationMode
3972      - extended grdchk package accordingly
3973    o added tangent linear setup in verification/carbon/code_ftl
3974    o added adjoint setup in verification/front_relax/code_ad
3975    
3976    checkpoint46e_post
3977    o Added new equation of state -> MDJWF
3978      - EOS of McDougall et al., 2002, JAOT, submitted
3979      - caveat: the equation of state is only valid for a smaller (more
3980        realistic?) range of values than JMD95P/Z and UNESCO
3981      - added masks to the calculation of pressure in store_pressure
3982      - added more check values for density in check_eos (ini_eos.F), some of
3983        the old check values are out of the range of the MDJWF-eos, so don't
3984        expect perfect matches for those
3985    checkpoint46e_pre
3986    
3987    checkpoint46d_post
3988    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
3989      'OCEANICP', also initialised field pressure correctly in ini_eos in the
3990      case of pressure coordinates. eosType='JMD95Z' in
3991      combination with buoyancyRelation='OCEANICP' now causes an error.
3992    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3993      in find_alpha/beta.
3994    checkpoint46d_pre
3995    
3996    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3997      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
3998    
3999    checkpoint46c_post
4000    o Changes necessary for ocean in p-coordinates
4001     -  Added new buoyancy relation = 'OCEANICP'
4002     -  Added new parameters = gravitySign (this used to be contained inside
4003        the factor dRdZ which I added when we first switched to R coordinates).
4004     X GM/Redi is not compatible (yet)
4005     X bottom drag and no-slip need to be debugged.
4006    checkpoint46c_pre
4007    
4008    checkpoint46b_post
4009    o Added new equation of state -> JMD95Z and JMD95P
4010      - EOS of Jackett and McDougall, 1995, JAOT
4011      - moved all EOS parameters into EOS.h
4012      - new routines ini_eos.F, store_pressure.F
4013    o Added UNESCO EOS, but not recommended because it requires
4014      in-situ temperature (see JMD95)
4015    o Modified formatting for knudsen2.f in utils/knudsen2 and added
4016      unesco.f to be used with POLY3
4017    checkpoint46b_pre
4018    
4019    checkpoint46a_post
4020    o Added (atmospheric) pressure loading
4021      - new field in FFIELDS.h, etc...
4022      - new cpp flag ATMOSPHERIC_LOADING
4023    o Changed hFacC to _hFacC in calc_phi_hyd.F
4024    o Added SHORTWAVE_HEATING to some files for consistency
4025    checkpoint46a_pre
4026    
4027    checkpoint46
4028    further merges from release1_p5
4029    o new ctrl package
4030      - adopted from ECCO environment to enable optimization
4031      - added Eliassen Palm fluxes to controls
4032    o added Eliassen Palm flux controls to gradient check package
4033    o cost package
4034      - Compatible with new ctrl package
4035      - added Eliassen Palm cost hooks
4036      - modif's of existing cost functions
4037    o Adjoint-related bug fixes in kpp:
4038      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
4039      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
4040    o autodiff package
4041      - flow directives:
4042        + new for S/R do_the_model_io
4043        + enhanced for S/R checkpoint
4044        + new gmredi.flow
4045      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
4046        disable adcommon.h/g_common.h by default.
4047      - fixed problem for adjoint of global_max
4048    o modified verification/carbon/
4049    o New setup for adjoint of global_ocean
4050    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
4051    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
4052    o incorporated hooks for sponge layer code (external_forcing.F)
4053    
4054    checkpoint45d_post
4055    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
4056    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
4057      (affects plume_on_slope "cg2d" output)
4058    o add new parameter deltaTfreesurf for free-surface time stepping
4059    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
4060    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
4061    o change phiMin in exp1 (to agree with documentation)
4062    o add new flags:
4063     - T,S forcing inside/outside Adams-Bashforth
4064     - turn off temp,salt advection and/or forcing
4065     - for each tracer, define internal flag for multiDimAdvection & A-B
4066    o monitor: change definition of KE to check conservation of Energy
4067    
4068    checkpoint45c_post
4069    o Removed f90 comments ("!")
4070    o Modified initialisations to enable exf package for MITgcm
4071      (without invoking ECCO_PACKAGE).
4072    o modifications to gradient check package (Martin Losch)
4073      - enable centered differences
4074      - modified format of standard output
4075    
4076    checkpoint45b_post
4077    o cleaned exchange calls in cg2d
4078    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
4079    o included CPP option SINGLE_LAYER_MODE in thermodynamics
4080      to configure barotropic setup (Martin Losch)
4081    o moved some initialisations within bi,bj loop in dynamics
4082      (TAF flow dependency)
4083    o in initialise_varia, moved call packages_init_variables
4084      before convective_adjustment_init
4085      (corresponding adjustment of TAF tape initialisation).
4086    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
4087    
4088    checkpoint45a_post
4089    o compute Rho over the whole domain (extend iMin,jMin indices)
4090    o specific exchange for X-slice domain (case Ny=1)
4091    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
4092    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
4093    
4094    checkpoint44h_post = checkpoint45
4095    o Fix to restore differentiability:
4096      place at which packages_init_variables is called in
4097      initialise_varia is crucial for reverse control flow.
4098    o modifications in GMRedi to enable stable adjoint
4099      (corresponding modif's in thermodynamics, dynamics)
4100    o added missing hook for sponge layer code in external_forcing
4101    o modified test cost functions
4102    o storing in gad_advection (plus removal of write(0,*)!
4103    o missing headers TR1.h added in convective_adjustment routines
4104    o errorMessageUnit set non-equal zero in eeboot
4105      (conflict on some platforms, e.g. IBM SP3)
4106    o modified carbon verif.
4107    
4108    checkpoint44h_pre
4109    o vertical grid option: allow to put the Interface at the middle between
4110      2 cell-centers ; replace delZ in pkg/kpp by drF.
4111    o GM Advective form: Tracers are advected using the residual transport (=
4112      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
4113    
4114  checkpoint44g_post  checkpoint44g_post
4115  o fix surface correction term in multiDimAdvection (affects plume_on_slope  o fix surface correction term in multiDimAdvection (affects plume_on_slope
4116    results) ; ifdef missing in thermodynamics.F    results) ; ifdef missing in thermodynamics.F

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